From e1107256e82d4d35c43e9892a3927572cfe29f8f Mon Sep 17 00:00:00 2001
From: Andriy Oblivantsev <eslider@gmail.com>
Date: Mon, 2 Mar 2026 22:43:27 +0000
Subject: [PATCH] Vendor frontend CDN dependencies and serve them locally.

This switches demo pages and modules to local web/vendor assets, fixes Three GLTFLoader local import resolution, and documents the runtime-data/agent commit workflow updates.

Made-with: Cursor
---
 AGENTS.md                                    |     1 +
 README.md                                    |     2 +
 docs/frontend-development.md                 |     8 +-
 web/index.html                               |     6 +-
 web/leaflet-demo.html                        |     8 +-
 web/maplibre-demo.html                       |     4 +-
 web/maplibre-demo.js                         |     4 +-
 web/qr.js                                    |     4 +-
 web/scanner.js                               |     2 +-
 web/vendor/leaflet/images/marker-icon-2x.png |   Bin 0 -> 2464 bytes
 web/vendor/leaflet/images/marker-icon.png    |   Bin 0 -> 1466 bytes
 web/vendor/leaflet/images/marker-shadow.png  |   Bin 0 -> 618 bytes
 web/vendor/leaflet/leaflet.css               |   661 +
 web/vendor/leaflet/leaflet.js                |     6 +
 web/vendor/maplibre/maplibre-gl.css          |     1 +
 web/vendor/maplibre/maplibre-gl.js           |    59 +
 web/vendor/qr/jsqr.bundle.mjs                |     3 +
 web/vendor/qr/jsqr.js                        |     3 +
 web/vendor/qr/qrcode.bundle.mjs              |    10 +
 web/vendor/qr/qrcode.js                      |     3 +
 web/vendor/three/GLTFLoader.js               |  4730 ++
 web/vendor/three/three.module.js             | 53917 +++++++++++++++++
 web/vendor/vue/vue.global.prod.js            |     9 +
 web/vendor/vuetify/vuetify.min.css           |    12 +
 web/vendor/vuetify/vuetify.min.js            |  2114 +
 25 files changed, 61548 insertions(+), 19 deletions(-)
 create mode 100644 web/vendor/leaflet/images/marker-icon-2x.png
 create mode 100644 web/vendor/leaflet/images/marker-icon.png
 create mode 100644 web/vendor/leaflet/images/marker-shadow.png
 create mode 100644 web/vendor/leaflet/leaflet.css
 create mode 100644 web/vendor/leaflet/leaflet.js
 create mode 100644 web/vendor/maplibre/maplibre-gl.css
 create mode 100644 web/vendor/maplibre/maplibre-gl.js
 create mode 100644 web/vendor/qr/jsqr.bundle.mjs
 create mode 100644 web/vendor/qr/jsqr.js
 create mode 100644 web/vendor/qr/qrcode.bundle.mjs
 create mode 100644 web/vendor/qr/qrcode.js
 create mode 100644 web/vendor/three/GLTFLoader.js
 create mode 100644 web/vendor/three/three.module.js
 create mode 100644 web/vendor/vue/vue.global.prod.js
 create mode 100644 web/vendor/vuetify/vuetify.min.css
 create mode 100644 web/vendor/vuetify/vuetify.min.js

diff --git a/AGENTS.md b/AGENTS.md
index f0eccb3..4bf23f8 100644
--- a/AGENTS.md
+++ b/AGENTS.md
@@ -48,6 +48,7 @@ bun run build
 
 - Prefer minimal changes and avoid unrelated refactors.
 - Treat `var/` as runtime data only; ignore it for code changes and commits.
+- Every change must be committed and pushed.
 - Add tests when behavior changes.
 - Verify Go tests after backend changes.
 - Verify Bun tests after TS client changes.
diff --git a/README.md b/README.md
index cb26251..45c1df4 100644
--- a/README.md
+++ b/README.md
@@ -20,6 +20,8 @@ go test ./...
 go run ./cmd/api
 ```
 
+`var/` is runtime data and is ignored by git.
+
 Run tests via Docker (avoids local permission issues, e.g. `var/`):
 
 ```bash
diff --git a/docs/frontend-development.md b/docs/frontend-development.md
index a61b1d3..7db418e 100644
--- a/docs/frontend-development.md
+++ b/docs/frontend-development.md
@@ -32,7 +32,7 @@ web/
 2. Open:
    - `http://localhost:8122/web/`
    - `http://localhost:8122/web/leaflet-demo.html` (Leaflet map demo for 3D/image placement + sharing)
-   - `http://localhost:8122/web/maplibre-demo.html` (MapLibre GL vector tiles + Three.js object rendering/placement)
+  - `http://localhost:8122/web/maplibre-demo.html` (MapLibre GL raster tiles + Three.js GLB/GLTF object rendering/placement)
 
 ### Runtime dependencies
 
@@ -63,9 +63,11 @@ web/
   - upload via backend endpoint (`/v1/assets/{id}/upload`)
   - copy/open share link and toggle public/private visibility
 - MapLibre GL + Three.js example:
-  - vector tile basemap via MapLibre style
+  - raster OSM basemap via MapLibre style
   - map click to place object position
-  - 3D marker rendering in custom Three.js layer
+  - custom Three.js layer loads real `glb`/`gltf` assets via `GLTFLoader`
+  - private assets are loaded with bearer auth header when user is logged in
+  - fallback primitive is rendered if model load fails or no 3D asset is linked
   - asset upload/link and share/visibility controls backed by API
 
 ## TypeScript client (`libs/geo-api-client`)
diff --git a/web/index.html b/web/index.html
index 0360e4f..b440bfe 100644
--- a/web/index.html
+++ b/web/index.html
@@ -4,7 +4,7 @@
     <meta charset="UTF-8" />
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Momswap Geo Backend Use-Cases Test</title>
-    <link href="https://cdn.jsdelivr.net/npm/vuetify@3.7.7/dist/vuetify.min.css" rel="stylesheet" />
+    <link href="./vendor/vuetify/vuetify.min.css" rel="stylesheet" />
     <style>
       body {
         background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
@@ -202,8 +202,8 @@
       </v-app>
     </div>
 
-    <script src="https://cdn.jsdelivr.net/npm/vue@3.5.13/dist/vue.global.prod.js"></script>
-    <script src="https://cdn.jsdelivr.net/npm/vuetify@3.7.7/dist/vuetify.min.js"></script>
+    <script src="./vendor/vue/vue.global.prod.js"></script>
+    <script src="./vendor/vuetify/vuetify.min.js"></script>
     <script type="module" src="./app.js"></script>
   </body>
 </html>
diff --git a/web/leaflet-demo.html b/web/leaflet-demo.html
index eecc096..cb12ae0 100644
--- a/web/leaflet-demo.html
+++ b/web/leaflet-demo.html
@@ -6,9 +6,7 @@
     <title>Momswap Leaflet 3D Assets Demo</title>
     <link
       rel="stylesheet"
-      href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"
-      integrity="sha256-p4NxAoJBhIIN+hmNHrzRCf9tD/miZyoHS5obTRR9BMY="
-      crossorigin=""
+      href="./vendor/leaflet/leaflet.css"
     />
     <style>
       :root {
@@ -144,9 +142,7 @@
     </div>
 
     <script
-      src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"
-      integrity="sha256-20nQCchB9co0qIjJZRGuk2/Z9VM+kNiyxNV1lvTlZBo="
-      crossorigin=""
+      src="./vendor/leaflet/leaflet.js"
     ></script>
     <script type="module" src="./leaflet-demo.js"></script>
   </body>
diff --git a/web/maplibre-demo.html b/web/maplibre-demo.html
index 328482b..1ebfdfb 100644
--- a/web/maplibre-demo.html
+++ b/web/maplibre-demo.html
@@ -6,7 +6,7 @@
     <title>MapLibre GL + Three.js Asset Demo</title>
     <link
       rel="stylesheet"
-      href="https://unpkg.com/maplibre-gl@4.7.1/dist/maplibre-gl.css"
+      href="./vendor/maplibre/maplibre-gl.css"
     />
     <style>
       :root {
@@ -137,7 +137,7 @@
       <div id="map"></div>
     </div>
 
-    <script src="https://unpkg.com/maplibre-gl@4.7.1/dist/maplibre-gl.js"></script>
+    <script src="./vendor/maplibre/maplibre-gl.js"></script>
     <script type="module" src="./maplibre-demo.js"></script>
   </body>
 </html>
diff --git a/web/maplibre-demo.js b/web/maplibre-demo.js
index 0772b78..2b666dd 100644
--- a/web/maplibre-demo.js
+++ b/web/maplibre-demo.js
@@ -1,5 +1,5 @@
-import * as THREE from "https://unpkg.com/three@0.168.0/build/three.module.js";
-import { GLTFLoader } from "https://unpkg.com/three@0.168.0/examples/jsm/loaders/GLTFLoader.js";
+import * as THREE from "./vendor/three/three.module.js";
+import { GLTFLoader } from "./vendor/three/GLTFLoader.js";
 import { GeoApiClient } from "../libs/geo-api-client/dist/index.js";
 
 class BrowserStorage {
diff --git a/web/qr.js b/web/qr.js
index 4665dbb..bc0af86 100644
--- a/web/qr.js
+++ b/web/qr.js
@@ -1,8 +1,8 @@
 /**
  * QR code generation for key display (pk = private key, pb = public key).
- * Uses qrcode package from CDN.
+ * Uses vendored qrcode package.
  */
-import QRCode from "https://esm.sh/qrcode?bundle";
+import QRCode from "./vendor/qr/qrcode.bundle.mjs";
 
 const DEFAULT_SIZE = 180;
 const DARK = "#0f172a";
diff --git a/web/scanner.js b/web/scanner.js
index d301812..2a05a2b 100644
--- a/web/scanner.js
+++ b/web/scanner.js
@@ -1,7 +1,7 @@
 /**
  * QR code scanner from camera. Decodes private key (pk) from QR.
  */
-import jsQR from "https://esm.sh/jsqr@1.4.0";
+import jsQR from "./vendor/qr/jsqr.bundle.mjs";
 
 /**
  * Scan QR code from camera video stream.
diff --git a/web/vendor/leaflet/images/marker-icon-2x.png b/web/vendor/leaflet/images/marker-icon-2x.png
new file mode 100644
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HcmV?d00001

diff --git a/web/vendor/leaflet/leaflet.css b/web/vendor/leaflet/leaflet.css
new file mode 100644
index 0000000..9ade8dc
--- /dev/null
+++ b/web/vendor/leaflet/leaflet.css
@@ -0,0 +1,661 @@
+/* required styles */
+
+.leaflet-pane,
+.leaflet-tile,
+.leaflet-marker-icon,
+.leaflet-marker-shadow,
+.leaflet-tile-container,
+.leaflet-pane > svg,
+.leaflet-pane > canvas,
+.leaflet-zoom-box,
+.leaflet-image-layer,
+.leaflet-layer {
+	position: absolute;
+	left: 0;
+	top: 0;
+	}
+.leaflet-container {
+	overflow: hidden;
+	}
+.leaflet-tile,
+.leaflet-marker-icon,
+.leaflet-marker-shadow {
+	-webkit-user-select: none;
+	   -moz-user-select: none;
+	        user-select: none;
+	  -webkit-user-drag: none;
+	}
+/* Prevents IE11 from highlighting tiles in blue */
+.leaflet-tile::selection {
+	background: transparent;
+}
+/* Safari renders non-retina tile on retina better with this, but Chrome is worse */
+.leaflet-safari .leaflet-tile {
+	image-rendering: -webkit-optimize-contrast;
+	}
+/* hack that prevents hw layers "stretching" when loading new tiles */
+.leaflet-safari .leaflet-tile-container {
+	width: 1600px;
+	height: 1600px;
+	-webkit-transform-origin: 0 0;
+	}
+.leaflet-marker-icon,
+.leaflet-marker-shadow {
+	display: block;
+	}
+/* .leaflet-container svg: reset svg max-width decleration shipped in Joomla! (joomla.org) 3.x */
+/* .leaflet-container img: map is broken in FF if you have max-width: 100% on tiles */
+.leaflet-container .leaflet-overlay-pane svg {
+	max-width: none !important;
+	max-height: none !important;
+	}
+.leaflet-container .leaflet-marker-pane img,
+.leaflet-container .leaflet-shadow-pane img,
+.leaflet-container .leaflet-tile-pane img,
+.leaflet-container img.leaflet-image-layer,
+.leaflet-container .leaflet-tile {
+	max-width: none !important;
+	max-height: none !important;
+	width: auto;
+	padding: 0;
+	}
+
+.leaflet-container img.leaflet-tile {
+	/* See: https://bugs.chromium.org/p/chromium/issues/detail?id=600120 */
+	mix-blend-mode: plus-lighter;
+}
+
+.leaflet-container.leaflet-touch-zoom {
+	-ms-touch-action: pan-x pan-y;
+	touch-action: pan-x pan-y;
+	}
+.leaflet-container.leaflet-touch-drag {
+	-ms-touch-action: pinch-zoom;
+	/* Fallback for FF which doesn't support pinch-zoom */
+	touch-action: none;
+	touch-action: pinch-zoom;
+}
+.leaflet-container.leaflet-touch-drag.leaflet-touch-zoom {
+	-ms-touch-action: none;
+	touch-action: none;
+}
+.leaflet-container {
+	-webkit-tap-highlight-color: transparent;
+}
+.leaflet-container a {
+	-webkit-tap-highlight-color: rgba(51, 181, 229, 0.4);
+}
+.leaflet-tile {
+	filter: inherit;
+	visibility: hidden;
+	}
+.leaflet-tile-loaded {
+	visibility: inherit;
+	}
+.leaflet-zoom-box {
+	width: 0;
+	height: 0;
+	-moz-box-sizing: border-box;
+	     box-sizing: border-box;
+	z-index: 800;
+	}
+/* workaround for https://bugzilla.mozilla.org/show_bug.cgi?id=888319 */
+.leaflet-overlay-pane svg {
+	-moz-user-select: none;
+	}
+
+.leaflet-pane         { z-index: 400; }
+
+.leaflet-tile-pane    { z-index: 200; }
+.leaflet-overlay-pane { z-index: 400; }
+.leaflet-shadow-pane  { z-index: 500; }
+.leaflet-marker-pane  { z-index: 600; }
+.leaflet-tooltip-pane   { z-index: 650; }
+.leaflet-popup-pane   { z-index: 700; }
+
+.leaflet-map-pane canvas { z-index: 100; }
+.leaflet-map-pane svg    { z-index: 200; }
+
+.leaflet-vml-shape {
+	width: 1px;
+	height: 1px;
+	}
+.lvml {
+	behavior: url(#default#VML);
+	display: inline-block;
+	position: absolute;
+	}
+
+
+/* control positioning */
+
+.leaflet-control {
+	position: relative;
+	z-index: 800;
+	pointer-events: visiblePainted; /* IE 9-10 doesn't have auto */
+	pointer-events: auto;
+	}
+.leaflet-top,
+.leaflet-bottom {
+	position: absolute;
+	z-index: 1000;
+	pointer-events: none;
+	}
+.leaflet-top {
+	top: 0;
+	}
+.leaflet-right {
+	right: 0;
+	}
+.leaflet-bottom {
+	bottom: 0;
+	}
+.leaflet-left {
+	left: 0;
+	}
+.leaflet-control {
+	float: left;
+	clear: both;
+	}
+.leaflet-right .leaflet-control {
+	float: right;
+	}
+.leaflet-top .leaflet-control {
+	margin-top: 10px;
+	}
+.leaflet-bottom .leaflet-control {
+	margin-bottom: 10px;
+	}
+.leaflet-left .leaflet-control {
+	margin-left: 10px;
+	}
+.leaflet-right .leaflet-control {
+	margin-right: 10px;
+	}
+
+
+/* zoom and fade animations */
+
+.leaflet-fade-anim .leaflet-popup {
+	opacity: 0;
+	-webkit-transition: opacity 0.2s linear;
+	   -moz-transition: opacity 0.2s linear;
+	        transition: opacity 0.2s linear;
+	}
+.leaflet-fade-anim .leaflet-map-pane .leaflet-popup {
+	opacity: 1;
+	}
+.leaflet-zoom-animated {
+	-webkit-transform-origin: 0 0;
+	    -ms-transform-origin: 0 0;
+	        transform-origin: 0 0;
+	}
+svg.leaflet-zoom-animated {
+	will-change: transform;
+}
+
+.leaflet-zoom-anim .leaflet-zoom-animated {
+	-webkit-transition: -webkit-transform 0.25s cubic-bezier(0,0,0.25,1);
+	   -moz-transition:    -moz-transform 0.25s cubic-bezier(0,0,0.25,1);
+	        transition:         transform 0.25s cubic-bezier(0,0,0.25,1);
+	}
+.leaflet-zoom-anim .leaflet-tile,
+.leaflet-pan-anim .leaflet-tile {
+	-webkit-transition: none;
+	   -moz-transition: none;
+	        transition: none;
+	}
+
+.leaflet-zoom-anim .leaflet-zoom-hide {
+	visibility: hidden;
+	}
+
+
+/* cursors */
+
+.leaflet-interactive {
+	cursor: pointer;
+	}
+.leaflet-grab {
+	cursor: -webkit-grab;
+	cursor:    -moz-grab;
+	cursor:         grab;
+	}
+.leaflet-crosshair,
+.leaflet-crosshair .leaflet-interactive {
+	cursor: crosshair;
+	}
+.leaflet-popup-pane,
+.leaflet-control {
+	cursor: auto;
+	}
+.leaflet-dragging .leaflet-grab,
+.leaflet-dragging .leaflet-grab .leaflet-interactive,
+.leaflet-dragging .leaflet-marker-draggable {
+	cursor: move;
+	cursor: -webkit-grabbing;
+	cursor:    -moz-grabbing;
+	cursor:         grabbing;
+	}
+
+/* marker & overlays interactivity */
+.leaflet-marker-icon,
+.leaflet-marker-shadow,
+.leaflet-image-layer,
+.leaflet-pane > svg path,
+.leaflet-tile-container {
+	pointer-events: none;
+	}
+
+.leaflet-marker-icon.leaflet-interactive,
+.leaflet-image-layer.leaflet-interactive,
+.leaflet-pane > svg path.leaflet-interactive,
+svg.leaflet-image-layer.leaflet-interactive path {
+	pointer-events: visiblePainted; /* IE 9-10 doesn't have auto */
+	pointer-events: auto;
+	}
+
+/* visual tweaks */
+
+.leaflet-container {
+	background: #ddd;
+	outline-offset: 1px;
+	}
+.leaflet-container a {
+	color: #0078A8;
+	}
+.leaflet-zoom-box {
+	border: 2px dotted #38f;
+	background: rgba(255,255,255,0.5);
+	}
+
+
+/* general typography */
+.leaflet-container {
+	font-family: "Helvetica Neue", Arial, Helvetica, sans-serif;
+	font-size: 12px;
+	font-size: 0.75rem;
+	line-height: 1.5;
+	}
+
+
+/* general toolbar styles */
+
+.leaflet-bar {
+	box-shadow: 0 1px 5px rgba(0,0,0,0.65);
+	border-radius: 4px;
+	}
+.leaflet-bar a {
+	background-color: #fff;
+	border-bottom: 1px solid #ccc;
+	width: 26px;
+	height: 26px;
+	line-height: 26px;
+	display: block;
+	text-align: center;
+	text-decoration: none;
+	color: black;
+	}
+.leaflet-bar a,
+.leaflet-control-layers-toggle {
+	background-position: 50% 50%;
+	background-repeat: no-repeat;
+	display: block;
+	}
+.leaflet-bar a:hover,
+.leaflet-bar a:focus {
+	background-color: #f4f4f4;
+	}
+.leaflet-bar a:first-child {
+	border-top-left-radius: 4px;
+	border-top-right-radius: 4px;
+	}
+.leaflet-bar a:last-child {
+	border-bottom-left-radius: 4px;
+	border-bottom-right-radius: 4px;
+	border-bottom: none;
+	}
+.leaflet-bar a.leaflet-disabled {
+	cursor: default;
+	background-color: #f4f4f4;
+	color: #bbb;
+	}
+
+.leaflet-touch .leaflet-bar a {
+	width: 30px;
+	height: 30px;
+	line-height: 30px;
+	}
+.leaflet-touch .leaflet-bar a:first-child {
+	border-top-left-radius: 2px;
+	border-top-right-radius: 2px;
+	}
+.leaflet-touch .leaflet-bar a:last-child {
+	border-bottom-left-radius: 2px;
+	border-bottom-right-radius: 2px;
+	}
+
+/* zoom control */
+
+.leaflet-control-zoom-in,
+.leaflet-control-zoom-out {
+	font: bold 18px 'Lucida Console', Monaco, monospace;
+	text-indent: 1px;
+	}
+
+.leaflet-touch .leaflet-control-zoom-in, .leaflet-touch .leaflet-control-zoom-out  {
+	font-size: 22px;
+	}
+
+
+/* layers control */
+
+.leaflet-control-layers {
+	box-shadow: 0 1px 5px rgba(0,0,0,0.4);
+	background: #fff;
+	border-radius: 5px;
+	}
+.leaflet-control-layers-toggle {
+	background-image: url(images/layers.png);
+	width: 36px;
+	height: 36px;
+	}
+.leaflet-retina .leaflet-control-layers-toggle {
+	background-image: url(images/layers-2x.png);
+	background-size: 26px 26px;
+	}
+.leaflet-touch .leaflet-control-layers-toggle {
+	width: 44px;
+	height: 44px;
+	}
+.leaflet-control-layers .leaflet-control-layers-list,
+.leaflet-control-layers-expanded .leaflet-control-layers-toggle {
+	display: none;
+	}
+.leaflet-control-layers-expanded .leaflet-control-layers-list {
+	display: block;
+	position: relative;
+	}
+.leaflet-control-layers-expanded {
+	padding: 6px 10px 6px 6px;
+	color: #333;
+	background: #fff;
+	}
+.leaflet-control-layers-scrollbar {
+	overflow-y: scroll;
+	overflow-x: hidden;
+	padding-right: 5px;
+	}
+.leaflet-control-layers-selector {
+	margin-top: 2px;
+	position: relative;
+	top: 1px;
+	}
+.leaflet-control-layers label {
+	display: block;
+	font-size: 13px;
+	font-size: 1.08333em;
+	}
+.leaflet-control-layers-separator {
+	height: 0;
+	border-top: 1px solid #ddd;
+	margin: 5px -10px 5px -6px;
+	}
+
+/* Default icon URLs */
+.leaflet-default-icon-path { /* used only in path-guessing heuristic, see L.Icon.Default */
+	background-image: url(images/marker-icon.png);
+	}
+
+
+/* attribution and scale controls */
+
+.leaflet-container .leaflet-control-attribution {
+	background: #fff;
+	background: rgba(255, 255, 255, 0.8);
+	margin: 0;
+	}
+.leaflet-control-attribution,
+.leaflet-control-scale-line {
+	padding: 0 5px;
+	color: #333;
+	line-height: 1.4;
+	}
+.leaflet-control-attribution a {
+	text-decoration: none;
+	}
+.leaflet-control-attribution a:hover,
+.leaflet-control-attribution a:focus {
+	text-decoration: underline;
+	}
+.leaflet-attribution-flag {
+	display: inline !important;
+	vertical-align: baseline !important;
+	width: 1em;
+	height: 0.6669em;
+	}
+.leaflet-left .leaflet-control-scale {
+	margin-left: 5px;
+	}
+.leaflet-bottom .leaflet-control-scale {
+	margin-bottom: 5px;
+	}
+.leaflet-control-scale-line {
+	border: 2px solid #777;
+	border-top: none;
+	line-height: 1.1;
+	padding: 2px 5px 1px;
+	white-space: nowrap;
+	-moz-box-sizing: border-box;
+	     box-sizing: border-box;
+	background: rgba(255, 255, 255, 0.8);
+	text-shadow: 1px 1px #fff;
+	}
+.leaflet-control-scale-line:not(:first-child) {
+	border-top: 2px solid #777;
+	border-bottom: none;
+	margin-top: -2px;
+	}
+.leaflet-control-scale-line:not(:first-child):not(:last-child) {
+	border-bottom: 2px solid #777;
+	}
+
+.leaflet-touch .leaflet-control-attribution,
+.leaflet-touch .leaflet-control-layers,
+.leaflet-touch .leaflet-bar {
+	box-shadow: none;
+	}
+.leaflet-touch .leaflet-control-layers,
+.leaflet-touch .leaflet-bar {
+	border: 2px solid rgba(0,0,0,0.2);
+	background-clip: padding-box;
+	}
+
+
+/* popup */
+
+.leaflet-popup {
+	position: absolute;
+	text-align: center;
+	margin-bottom: 20px;
+	}
+.leaflet-popup-content-wrapper {
+	padding: 1px;
+	text-align: left;
+	border-radius: 12px;
+	}
+.leaflet-popup-content {
+	margin: 13px 24px 13px 20px;
+	line-height: 1.3;
+	font-size: 13px;
+	font-size: 1.08333em;
+	min-height: 1px;
+	}
+.leaflet-popup-content p {
+	margin: 17px 0;
+	margin: 1.3em 0;
+	}
+.leaflet-popup-tip-container {
+	width: 40px;
+	height: 20px;
+	position: absolute;
+	left: 50%;
+	margin-top: -1px;
+	margin-left: -20px;
+	overflow: hidden;
+	pointer-events: none;
+	}
+.leaflet-popup-tip {
+	width: 17px;
+	height: 17px;
+	padding: 1px;
+
+	margin: -10px auto 0;
+	pointer-events: auto;
+
+	-webkit-transform: rotate(45deg);
+	   -moz-transform: rotate(45deg);
+	    -ms-transform: rotate(45deg);
+	        transform: rotate(45deg);
+	}
+.leaflet-popup-content-wrapper,
+.leaflet-popup-tip {
+	background: white;
+	color: #333;
+	box-shadow: 0 3px 14px rgba(0,0,0,0.4);
+	}
+.leaflet-container a.leaflet-popup-close-button {
+	position: absolute;
+	top: 0;
+	right: 0;
+	border: none;
+	text-align: center;
+	width: 24px;
+	height: 24px;
+	font: 16px/24px Tahoma, Verdana, sans-serif;
+	color: #757575;
+	text-decoration: none;
+	background: transparent;
+	}
+.leaflet-container a.leaflet-popup-close-button:hover,
+.leaflet-container a.leaflet-popup-close-button:focus {
+	color: #585858;
+	}
+.leaflet-popup-scrolled {
+	overflow: auto;
+	}
+
+.leaflet-oldie .leaflet-popup-content-wrapper {
+	-ms-zoom: 1;
+	}
+.leaflet-oldie .leaflet-popup-tip {
+	width: 24px;
+	margin: 0 auto;
+
+	-ms-filter: "progid:DXImageTransform.Microsoft.Matrix(M11=0.70710678, M12=0.70710678, M21=-0.70710678, M22=0.70710678)";
+	filter: progid:DXImageTransform.Microsoft.Matrix(M11=0.70710678, M12=0.70710678, M21=-0.70710678, M22=0.70710678);
+	}
+
+.leaflet-oldie .leaflet-control-zoom,
+.leaflet-oldie .leaflet-control-layers,
+.leaflet-oldie .leaflet-popup-content-wrapper,
+.leaflet-oldie .leaflet-popup-tip {
+	border: 1px solid #999;
+	}
+
+
+/* div icon */
+
+.leaflet-div-icon {
+	background: #fff;
+	border: 1px solid #666;
+	}
+
+
+/* Tooltip */
+/* Base styles for the element that has a tooltip */
+.leaflet-tooltip {
+	position: absolute;
+	padding: 6px;
+	background-color: #fff;
+	border: 1px solid #fff;
+	border-radius: 3px;
+	color: #222;
+	white-space: nowrap;
+	-webkit-user-select: none;
+	-moz-user-select: none;
+	-ms-user-select: none;
+	user-select: none;
+	pointer-events: none;
+	box-shadow: 0 1px 3px rgba(0,0,0,0.4);
+	}
+.leaflet-tooltip.leaflet-interactive {
+	cursor: pointer;
+	pointer-events: auto;
+	}
+.leaflet-tooltip-top:before,
+.leaflet-tooltip-bottom:before,
+.leaflet-tooltip-left:before,
+.leaflet-tooltip-right:before {
+	position: absolute;
+	pointer-events: none;
+	border: 6px solid transparent;
+	background: transparent;
+	content: "";
+	}
+
+/* Directions */
+
+.leaflet-tooltip-bottom {
+	margin-top: 6px;
+}
+.leaflet-tooltip-top {
+	margin-top: -6px;
+}
+.leaflet-tooltip-bottom:before,
+.leaflet-tooltip-top:before {
+	left: 50%;
+	margin-left: -6px;
+	}
+.leaflet-tooltip-top:before {
+	bottom: 0;
+	margin-bottom: -12px;
+	border-top-color: #fff;
+	}
+.leaflet-tooltip-bottom:before {
+	top: 0;
+	margin-top: -12px;
+	margin-left: -6px;
+	border-bottom-color: #fff;
+	}
+.leaflet-tooltip-left {
+	margin-left: -6px;
+}
+.leaflet-tooltip-right {
+	margin-left: 6px;
+}
+.leaflet-tooltip-left:before,
+.leaflet-tooltip-right:before {
+	top: 50%;
+	margin-top: -6px;
+	}
+.leaflet-tooltip-left:before {
+	right: 0;
+	margin-right: -12px;
+	border-left-color: #fff;
+	}
+.leaflet-tooltip-right:before {
+	left: 0;
+	margin-left: -12px;
+	border-right-color: #fff;
+	}
+
+/* Printing */
+
+@media print {
+	/* Prevent printers from removing background-images of controls. */
+	.leaflet-control {
+		-webkit-print-color-adjust: exact;
+		print-color-adjust: exact;
+		}
+	}
diff --git a/web/vendor/leaflet/leaflet.js b/web/vendor/leaflet/leaflet.js
new file mode 100644
index 0000000..a3bf693
--- /dev/null
+++ b/web/vendor/leaflet/leaflet.js
@@ -0,0 +1,6 @@
+/* @preserve
+ * Leaflet 1.9.4, a JS library for interactive maps. https://leafletjs.com
+ * (c) 2010-2023 Vladimir Agafonkin, (c) 2010-2011 CloudMade
+ */
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?e(exports):"function"==typeof define&&define.amd?define(["exports"],e):e((t="undefined"!=typeof globalThis?globalThis:t||self).leaflet={})}(this,function(t){"use strict";function l(t){for(var e,i,n=1,o=arguments.length;n<o;n++)for(e in i=arguments[n])t[e]=i[e];return t}var R=Object.create||function(t){return N.prototype=t,new N};function N(){}function a(t,e){var i,n=Array.prototype.slice;return t.bind?t.bind.apply(t,n.call(arguments,1)):(i=n.call(arguments,2),function(){return t.apply(e,i.length?i.concat(n.call(arguments)):arguments)})}var D=0;function h(t){return"_leaflet_id"in t||(t._leaflet_id=++D),t._leaflet_id}function j(t,e,i){var n,o,s=function(){n=!1,o&&(r.apply(i,o),o=!1)},r=function(){n?o=arguments:(t.apply(i,arguments),setTimeout(s,e),n=!0)};return r}function H(t,e,i){var n=e[1],e=e[0],o=n-e;return t===n&&i?t:((t-e)%o+o)%o+e}function u(){return!1}function i(t,e){return!1===e?t:(e=Math.pow(10,void 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"+t+"."}))},_handleGeolocationResponse:function(t){if(this._container._leaflet_id){var e,i,n=new v(t.coords.latitude,t.coords.longitude),o=n.toBounds(2*t.coords.accuracy),s=this._locateOptions,r=(s.setView&&(e=this.getBoundsZoom(o),this.setView(n,s.maxZoom?Math.min(e,s.maxZoom):e)),{latlng:n,bounds:o,timestamp:t.timestamp});for(i in t.coords)"number"==typeof t.coords[i]&&(r[i]=t.coords[i]);this.fire("locationfound",r)}},addHandler:function(t,e){return e&&(e=this[t]=new e(this),this._handlers.push(e),this.options[t]&&e.enable()),this},remove:function(){if(this._initEvents(!0),this.options.maxBounds&&this.off("moveend",this._panInsideMaxBounds),this._containerId!==this._container._leaflet_id)throw new Error("Map container is being reused by another instance");try{delete this._container._leaflet_id,delete this._containerId}catch(t){this._container._leaflet_id=void 0,this._containerId=void 0}for(var t in void 0!==this._locationWatchId&&this.stopLocate(),this._stop(),T(this._mapPane),this._clearControlPos&&this._clearControlPos(),this._resizeRequest&&(r(this._resizeRequest),this._resizeRequest=null),this._clearHandlers(),this._loaded&&this.fire("unload"),this._layers)this._layers[t].remove();for(t in this._panes)T(this._panes[t]);return this._layers=[],this._panes=[],delete this._mapPane,delete this._renderer,this},createPane:function(t,e){e=P("div","leaflet-pane"+(t?" leaflet-"+t.replace("Pane","")+"-pane":""),e||this._mapPane);return t&&(this._panes[t]=e),e},getCenter:function(){return this._checkIfLoaded(),this._lastCenter&&!this._moved()?this._lastCenter.clone():this.layerPointToLatLng(this._getCenterLayerPoint())},getZoom:function(){return this._zoom},getBounds:function(){var t=this.getPixelBounds();return new s(this.unproject(t.getBottomLeft()),this.unproject(t.getTopRight()))},getMinZoom:function(){return void 0===this.options.minZoom?this._layersMinZoom||0:this.options.minZoom},getMaxZoom:function(){return void 0===this.options.maxZoom?void 0===this._layersMaxZoom?1/0:this._layersMaxZoom:this.options.maxZoom},getBoundsZoom:function(t,e,i){t=g(t),i=m(i||[0,0]);var n=this.getZoom()||0,o=this.getMinZoom(),s=this.getMaxZoom(),r=t.getNorthWest(),t=t.getSouthEast(),i=this.getSize().subtract(i),t=_(this.project(t,n),this.project(r,n)).getSize(),r=b.any3d?this.options.zoomSnap:1,a=i.x/t.x,i=i.y/t.y,t=e?Math.max(a,i):Math.min(a,i),n=this.getScaleZoom(t,n);return r&&(n=Math.round(n/(r/100))*(r/100),n=e?Math.ceil(n/r)*r:Math.floor(n/r)*r),Math.max(o,Math.min(s,n))},getSize:function(){return this._size&&!this._sizeChanged||(this._size=new p(this._container.clientWidth||0,this._container.clientHeight||0),this._sizeChanged=!1),this._size.clone()},getPixelBounds:function(t,e){t=this._getTopLeftPoint(t,e);return new f(t,t.add(this.getSize()))},getPixelOrigin:function(){return this._checkIfLoaded(),this._pixelOrigin},getPixelWorldBounds:function(t){return this.options.crs.getProjectedBounds(void 0===t?this.getZoom():t)},getPane:function(t){return"string"==typeof t?this._panes[t]:t},getPanes:function(){return this._panes},getContainer:function(){return this._container},getZoomScale:function(t,e){var i=this.options.crs;return e=void 0===e?this._zoom:e,i.scale(t)/i.scale(e)},getScaleZoom:function(t,e){var i=this.options.crs,t=(e=void 0===e?this._zoom:e,i.zoom(t*i.scale(e)));return isNaN(t)?1/0:t},project:function(t,e){return e=void 0===e?this._zoom:e,this.options.crs.latLngToPoint(w(t),e)},unproject:function(t,e){return e=void 0===e?this._zoom:e,this.options.crs.pointToLatLng(m(t),e)},layerPointToLatLng:function(t){t=m(t).add(this.getPixelOrigin());return this.unproject(t)},latLngToLayerPoint:function(t){return this.project(w(t))._round()._subtract(this.getPixelOrigin())},wrapLatLng:function(t){return this.options.crs.wrapLatLng(w(t))},wrapLatLngBounds:function(t){return this.options.crs.wrapLatLngBounds(g(t))},distance:function(t,e){return this.options.crs.distance(w(t),w(e))},containerPointToLayerPoint:function(t){return m(t).subtract(this._getMapPanePos())},layerPointToContainerPoint:function(t){return m(t).add(this._getMapPanePos())},containerPointToLatLng:function(t){t=this.containerPointToLayerPoint(m(t));return this.layerPointToLatLng(t)},latLngToContainerPoint:function(t){return this.layerPointToContainerPoint(this.latLngToLayerPoint(w(t)))},mouseEventToContainerPoint:function(t){return De(t,this._container)},mouseEventToLayerPoint:function(t){return this.containerPointToLayerPoint(this.mouseEventToContainerPoint(t))},mouseEventToLatLng:function(t){return this.layerPointToLatLng(this.mouseEventToLayerPoint(t))},_initContainer:function(t){t=this._container=_e(t);if(!t)throw new Error("Map container not found.");if(t._leaflet_id)throw new Error("Map container is already initialized.");S(t,"scroll",this._onScroll,this),this._containerId=h(t)},_initLayout:function(){var t=this._container,e=(this._fadeAnimated=this.options.fadeAnimation&&b.any3d,M(t,"leaflet-container"+(b.touch?" leaflet-touch":"")+(b.retina?" leaflet-retina":"")+(b.ielt9?" leaflet-oldie":"")+(b.safari?" leaflet-safari":"")+(this._fadeAnimated?" leaflet-fade-anim":"")),pe(t,"position"));"absolute"!==e&&"relative"!==e&&"fixed"!==e&&"sticky"!==e&&(t.style.position="relative"),this._initPanes(),this._initControlPos&&this._initControlPos()},_initPanes:function(){var t=this._panes={};this._paneRenderers={},this._mapPane=this.createPane("mapPane",this._container),Z(this._mapPane,new p(0,0)),this.createPane("tilePane"),this.createPane("overlayPane"),this.createPane("shadowPane"),this.createPane("markerPane"),this.createPane("tooltipPane"),this.createPane("popupPane"),this.options.markerZoomAnimation||(M(t.markerPane,"leaflet-zoom-hide"),M(t.shadowPane,"leaflet-zoom-hide"))},_resetView:function(t,e,i){Z(this._mapPane,new p(0,0));var n=!this._loaded,o=(this._loaded=!0,e=this._limitZoom(e),this.fire("viewprereset"),this._zoom!==e);this._moveStart(o,i)._move(t,e)._moveEnd(o),this.fire("viewreset"),n&&this.fire("load")},_moveStart:function(t,e){return t&&this.fire("zoomstart"),e||this.fire("movestart"),this},_move:function(t,e,i,n){void 0===e&&(e=this._zoom);var o=this._zoom!==e;return this._zoom=e,this._lastCenter=t,this._pixelOrigin=this._getNewPixelOrigin(t),n?i&&i.pinch&&this.fire("zoom",i):((o||i&&i.pinch)&&this.fire("zoom",i),this.fire("move",i)),this},_moveEnd:function(t){return t&&this.fire("zoomend"),this.fire("moveend")},_stop:function(){return r(this._flyToFrame),this._panAnim&&this._panAnim.stop(),this},_rawPanBy:function(t){Z(this._mapPane,this._getMapPanePos().subtract(t))},_getZoomSpan:function(){return this.getMaxZoom()-this.getMinZoom()},_panInsideMaxBounds:function(){this._enforcingBounds||this.panInsideBounds(this.options.maxBounds)},_checkIfLoaded:function(){if(!this._loaded)throw new Error("Set map center and zoom first.")},_initEvents:function(t){this._targets={};var e=t?k:S;e((this._targets[h(this._container)]=this)._container,"click dblclick mousedown mouseup mouseover mouseout mousemove contextmenu keypress keydown keyup",this._handleDOMEvent,this),this.options.trackResize&&e(window,"resize",this._onResize,this),b.any3d&&this.options.transform3DLimit&&(t?this.off:this.on).call(this,"moveend",this._onMoveEnd)},_onResize:function(){r(this._resizeRequest),this._resizeRequest=x(function(){this.invalidateSize({debounceMoveend:!0})},this)},_onScroll:function(){this._container.scrollTop=0,this._container.scrollLeft=0},_onMoveEnd:function(){var t=this._getMapPanePos();Math.max(Math.abs(t.x),Math.abs(t.y))>=this.options.transform3DLimit&&this._resetView(this.getCenter(),this.getZoom())},_findEventTargets:function(t,e){for(var i,n=[],o="mouseout"===e||"mouseover"===e,s=t.target||t.srcElement,r=!1;s;){if((i=this._targets[h(s)])&&("click"===e||"preclick"===e)&&this._draggableMoved(i)){r=!0;break}if(i&&i.listens(e,!0)){if(o&&!We(s,t))break;if(n.push(i),o)break}if(s===this._container)break;s=s.parentNode}return n=n.length||r||o||!this.listens(e,!0)?n:[this]},_isClickDisabled:function(t){for(;t&&t!==this._container;){if(t._leaflet_disable_click)return!0;t=t.parentNode}},_handleDOMEvent:function(t){var e,i=t.target||t.srcElement;!this._loaded||i._leaflet_disable_events||"click"===t.type&&this._isClickDisabled(i)||("mousedown"===(e=t.type)&&Me(i),this._fireDOMEvent(t,e))},_mouseEvents:["click","dblclick","mouseover","mouseout","contextmenu"],_fireDOMEvent:function(t,e,i){"click"===t.type&&((a=l({},t)).type="preclick",this._fireDOMEvent(a,a.type,i));var n=this._findEventTargets(t,e);if(i){for(var o=[],s=0;s<i.length;s++)i[s].listens(e,!0)&&o.push(i[s]);n=o.concat(n)}if(n.length){"contextmenu"===e&&O(t);var r,a=n[0],h={originalEvent:t};for("keypress"!==t.type&&"keydown"!==t.type&&"keyup"!==t.type&&(r=a.getLatLng&&(!a._radius||a._radius<=10),h.containerPoint=r?this.latLngToContainerPoint(a.getLatLng()):this.mouseEventToContainerPoint(t),h.layerPoint=this.containerPointToLayerPoint(h.containerPoint),h.latlng=r?a.getLatLng():this.layerPointToLatLng(h.layerPoint)),s=0;s<n.length;s++)if(n[s].fire(e,h,!0),h.originalEvent._stopped||!1===n[s].options.bubblingMouseEvents&&-1!==G(this._mouseEvents,e))return}},_draggableMoved:function(t){return(t=t.dragging&&t.dragging.enabled()?t:this).dragging&&t.dragging.moved()||this.boxZoom&&this.boxZoom.moved()},_clearHandlers:function(){for(var t=0,e=this._handlers.length;t<e;t++)this._handlers[t].disable()},whenReady:function(t,e){return this._loaded?t.call(e||this,{target:this}):this.on("load",t,e),this},_getMapPanePos:function(){return Pe(this._mapPane)||new p(0,0)},_moved:function(){var t=this._getMapPanePos();return t&&!t.equals([0,0])},_getTopLeftPoint:function(t,e){return(t&&void 0!==e?this._getNewPixelOrigin(t,e):this.getPixelOrigin()).subtract(this._getMapPanePos())},_getNewPixelOrigin:function(t,e){var i=this.getSize()._divideBy(2);return this.project(t,e)._subtract(i)._add(this._getMapPanePos())._round()},_latLngToNewLayerPoint:function(t,e,i){i=this._getNewPixelOrigin(i,e);return this.project(t,e)._subtract(i)},_latLngBoundsToNewLayerBounds:function(t,e,i){i=this._getNewPixelOrigin(i,e);return _([this.project(t.getSouthWest(),e)._subtract(i),this.project(t.getNorthWest(),e)._subtract(i),this.project(t.getSouthEast(),e)._subtract(i),this.project(t.getNorthEast(),e)._subtract(i)])},_getCenterLayerPoint:function(){return this.containerPointToLayerPoint(this.getSize()._divideBy(2))},_getCenterOffset:function(t){return this.latLngToLayerPoint(t).subtract(this._getCenterLayerPoint())},_limitCenter:function(t,e,i){var n,o;return!i||(n=this.project(t,e),o=this.getSize().divideBy(2),o=new f(n.subtract(o),n.add(o)),o=this._getBoundsOffset(o,i,e),Math.abs(o.x)<=1&&Math.abs(o.y)<=1)?t:this.unproject(n.add(o),e)},_limitOffset:function(t,e){var i;return e?(i=new f((i=this.getPixelBounds()).min.add(t),i.max.add(t)),t.add(this._getBoundsOffset(i,e))):t},_getBoundsOffset:function(t,e,i){e=_(this.project(e.getNorthEast(),i),this.project(e.getSouthWest(),i)),i=e.min.subtract(t.min),e=e.max.subtract(t.max);return new p(this._rebound(i.x,-e.x),this._rebound(i.y,-e.y))},_rebound:function(t,e){return 0<t+e?Math.round(t-e)/2:Math.max(0,Math.ceil(t))-Math.max(0,Math.floor(e))},_limitZoom:function(t){var e=this.getMinZoom(),i=this.getMaxZoom(),n=b.any3d?this.options.zoomSnap:1;return n&&(t=Math.round(t/n)*n),Math.max(e,Math.min(i,t))},_onPanTransitionStep:function(){this.fire("move")},_onPanTransitionEnd:function(){z(this._mapPane,"leaflet-pan-anim"),this.fire("moveend")},_tryAnimatedPan:function(t,e){t=this._getCenterOffset(t)._trunc();return!(!0!==(e&&e.animate)&&!this.getSize().contains(t))&&(this.panBy(t,e),!0)},_createAnimProxy:function(){var t=this._proxy=P("div","leaflet-proxy leaflet-zoom-animated");this._panes.mapPane.appendChild(t),this.on("zoomanim",function(t){var e=ue,i=this._proxy.style[e];be(this._proxy,this.project(t.center,t.zoom),this.getZoomScale(t.zoom,1)),i===this._proxy.style[e]&&this._animatingZoom&&this._onZoomTransitionEnd()},this),this.on("load moveend",this._animMoveEnd,this),this._on("unload",this._destroyAnimProxy,this)},_destroyAnimProxy:function(){T(this._proxy),this.off("load moveend",this._animMoveEnd,this),delete this._proxy},_animMoveEnd:function(){var t=this.getCenter(),e=this.getZoom();be(this._proxy,this.project(t,e),this.getZoomScale(e,1))},_catchTransitionEnd:function(t){this._animatingZoom&&0<=t.propertyName.indexOf("transform")&&this._onZoomTransitionEnd()},_nothingToAnimate:function(){return!this._container.getElementsByClassName("leaflet-zoom-animated").length},_tryAnimatedZoom:function(t,e,i){if(!this._animatingZoom){if(i=i||{},!this._zoomAnimated||!1===i.animate||this._nothingToAnimate()||Math.abs(e-this._zoom)>this.options.zoomAnimationThreshold)return!1;var n=this.getZoomScale(e),n=this._getCenterOffset(t)._divideBy(1-1/n);if(!0!==i.animate&&!this.getSize().contains(n))return!1;x(function(){this._moveStart(!0,i.noMoveStart||!1)._animateZoom(t,e,!0)},this)}return!0},_animateZoom:function(t,e,i,n){this._mapPane&&(i&&(this._animatingZoom=!0,this._animateToCenter=t,this._animateToZoom=e,M(this._mapPane,"leaflet-zoom-anim")),this.fire("zoomanim",{center:t,zoom:e,noUpdate:n}),this._tempFireZoomEvent||(this._tempFireZoomEvent=this._zoom!==this._animateToZoom),this._move(this._animateToCenter,this._animateToZoom,void 0,!0),setTimeout(a(this._onZoomTransitionEnd,this),250))},_onZoomTransitionEnd:function(){this._animatingZoom&&(this._mapPane&&z(this._mapPane,"leaflet-zoom-anim"),this._animatingZoom=!1,this._move(this._animateToCenter,this._animateToZoom,void 0,!0),this._tempFireZoomEvent&&this.fire("zoom"),delete this._tempFireZoomEvent,this.fire("move"),this._moveEnd(!0))}});function Ue(t){return new B(t)}var B=et.extend({options:{position:"topright"},initialize:function(t){c(this,t)},getPosition:function(){return this.options.position},setPosition:function(t){var e=this._map;return e&&e.removeControl(this),this.options.position=t,e&&e.addControl(this),this},getContainer:function(){return this._container},addTo:function(t){this.remove(),this._map=t;var e=this._container=this.onAdd(t),i=this.getPosition(),t=t._controlCorners[i];return M(e,"leaflet-control"),-1!==i.indexOf("bottom")?t.insertBefore(e,t.firstChild):t.appendChild(e),this._map.on("unload",this.remove,this),this},remove:function(){return this._map&&(T(this._container),this.onRemove&&this.onRemove(this._map),this._map.off("unload",this.remove,this),this._map=null),this},_refocusOnMap:function(t){this._map&&t&&0<t.screenX&&0<t.screenY&&this._map.getContainer().focus()}}),Ve=(A.include({addControl:function(t){return t.addTo(this),this},removeControl:function(t){return t.remove(),this},_initControlPos:function(){var i=this._controlCorners={},n="leaflet-",o=this._controlContainer=P("div",n+"control-container",this._container);function t(t,e){i[t+e]=P("div",n+t+" "+n+e,o)}t("top","left"),t("top","right"),t("bottom","left"),t("bottom","right")},_clearControlPos:function(){for(var t in this._controlCorners)T(this._controlCorners[t]);T(this._controlContainer),delete this._controlCorners,delete this._controlContainer}}),B.extend({options:{collapsed:!0,position:"topright",autoZIndex:!0,hideSingleBase:!1,sortLayers:!1,sortFunction:function(t,e,i,n){return i<n?-1:n<i?1:0}},initialize:function(t,e,i){for(var n in c(this,i),this._layerControlInputs=[],this._layers=[],this._lastZIndex=0,this._handlingClick=!1,this._preventClick=!1,t)this._addLayer(t[n],n);for(n in e)this._addLayer(e[n],n,!0)},onAdd:function(t){this._initLayout(),this._update(),(this._map=t).on("zoomend",this._checkDisabledLayers,this);for(var e=0;e<this._layers.length;e++)this._layers[e].layer.on("add remove",this._onLayerChange,this);return this._container},addTo:function(t){return B.prototype.addTo.call(this,t),this._expandIfNotCollapsed()},onRemove:function(){this._map.off("zoomend",this._checkDisabledLayers,this);for(var t=0;t<this._layers.length;t++)this._layers[t].layer.off("add remove",this._onLayerChange,this)},addBaseLayer:function(t,e){return this._addLayer(t,e),this._map?this._update():this},addOverlay:function(t,e){return this._addLayer(t,e,!0),this._map?this._update():this},removeLayer:function(t){t.off("add remove",this._onLayerChange,this);t=this._getLayer(h(t));return t&&this._layers.splice(this._layers.indexOf(t),1),this._map?this._update():this},expand:function(){M(this._container,"leaflet-control-layers-expanded"),this._section.style.height=null;var t=this._map.getSize().y-(this._container.offsetTop+50);return t<this._section.clientHeight?(M(this._section,"leaflet-control-layers-scrollbar"),this._section.style.height=t+"px"):z(this._section,"leaflet-control-layers-scrollbar"),this._checkDisabledLayers(),this},collapse:function(){return z(this._container,"leaflet-control-layers-expanded"),this},_initLayout:function(){var t="leaflet-control-layers",e=this._container=P("div",t),i=this.options.collapsed,n=(e.setAttribute("aria-haspopup",!0),Ie(e),Be(e),this._section=P("section",t+"-list")),o=(i&&(this._map.on("click",this.collapse,this),S(e,{mouseenter:this._expandSafely,mouseleave:this.collapse},this)),this._layersLink=P("a",t+"-toggle",e));o.href="#",o.title="Layers",o.setAttribute("role","button"),S(o,{keydown:function(t){13===t.keyCode&&this._expandSafely()},click:function(t){O(t),this._expandSafely()}},this),i||this.expand(),this._baseLayersList=P("div",t+"-base",n),this._separator=P("div",t+"-separator",n),this._overlaysList=P("div",t+"-overlays",n),e.appendChild(n)},_getLayer:function(t){for(var e=0;e<this._layers.length;e++)if(this._layers[e]&&h(this._layers[e].layer)===t)return this._layers[e]},_addLayer:function(t,e,i){this._map&&t.on("add remove",this._onLayerChange,this),this._layers.push({layer:t,name:e,overlay:i}),this.options.sortLayers&&this._layers.sort(a(function(t,e){return this.options.sortFunction(t.layer,e.layer,t.name,e.name)},this)),this.options.autoZIndex&&t.setZIndex&&(this._lastZIndex++,t.setZIndex(this._lastZIndex)),this._expandIfNotCollapsed()},_update:function(){if(this._container){me(this._baseLayersList),me(this._overlaysList),this._layerControlInputs=[];for(var t,e,i,n=0,o=0;o<this._layers.length;o++)i=this._layers[o],this._addItem(i),e=e||i.overlay,t=t||!i.overlay,n+=i.overlay?0:1;this.options.hideSingleBase&&(this._baseLayersList.style.display=(t=t&&1<n)?"":"none"),this._separator.style.display=e&&t?"":"none"}return this},_onLayerChange:function(t){this._handlingClick||this._update();var e=this._getLayer(h(t.target)),t=e.overlay?"add"===t.type?"overlayadd":"overlayremove":"add"===t.type?"baselayerchange":null;t&&this._map.fire(t,e)},_createRadioElement:function(t,e){t='<input type="radio" class="leaflet-control-layers-selector" name="'+t+'"'+(e?' checked="checked"':"")+"/>",e=document.createElement("div");return e.innerHTML=t,e.firstChild},_addItem:function(t){var e,i=document.createElement("label"),n=this._map.hasLayer(t.layer),n=(t.overlay?((e=document.createElement("input")).type="checkbox",e.className="leaflet-control-layers-selector",e.defaultChecked=n):e=this._createRadioElement("leaflet-base-layers_"+h(this),n),this._layerControlInputs.push(e),e.layerId=h(t.layer),S(e,"click",this._onInputClick,this),document.createElement("span")),o=(n.innerHTML=" "+t.name,document.createElement("span"));return i.appendChild(o),o.appendChild(e),o.appendChild(n),(t.overlay?this._overlaysList:this._baseLayersList).appendChild(i),this._checkDisabledLayers(),i},_onInputClick:function(){if(!this._preventClick){var t,e,i=this._layerControlInputs,n=[],o=[];this._handlingClick=!0;for(var s=i.length-1;0<=s;s--)t=i[s],e=this._getLayer(t.layerId).layer,t.checked?n.push(e):t.checked||o.push(e);for(s=0;s<o.length;s++)this._map.hasLayer(o[s])&&this._map.removeLayer(o[s]);for(s=0;s<n.length;s++)this._map.hasLayer(n[s])||this._map.addLayer(n[s]);this._handlingClick=!1,this._refocusOnMap()}},_checkDisabledLayers:function(){for(var t,e,i=this._layerControlInputs,n=this._map.getZoom(),o=i.length-1;0<=o;o--)t=i[o],e=this._getLayer(t.layerId).layer,t.disabled=void 0!==e.options.minZoom&&n<e.options.minZoom||void 0!==e.options.maxZoom&&n>e.options.maxZoom},_expandIfNotCollapsed:function(){return this._map&&!this.options.collapsed&&this.expand(),this},_expandSafely:function(){var t=this._section,e=(this._preventClick=!0,S(t,"click",O),this.expand(),this);setTimeout(function(){k(t,"click",O),e._preventClick=!1})}})),qe=B.extend({options:{position:"topleft",zoomInText:'<span aria-hidden="true">+</span>',zoomInTitle:"Zoom in",zoomOutText:'<span aria-hidden="true">&#x2212;</span>',zoomOutTitle:"Zoom out"},onAdd:function(t){var e="leaflet-control-zoom",i=P("div",e+" leaflet-bar"),n=this.options;return this._zoomInButton=this._createButton(n.zoomInText,n.zoomInTitle,e+"-in",i,this._zoomIn),this._zoomOutButton=this._createButton(n.zoomOutText,n.zoomOutTitle,e+"-out",i,this._zoomOut),this._updateDisabled(),t.on("zoomend zoomlevelschange",this._updateDisabled,this),i},onRemove:function(t){t.off("zoomend zoomlevelschange",this._updateDisabled,this)},disable:function(){return this._disabled=!0,this._updateDisabled(),this},enable:function(){return this._disabled=!1,this._updateDisabled(),this},_zoomIn:function(t){!this._disabled&&this._map._zoom<this._map.getMaxZoom()&&this._map.zoomIn(this._map.options.zoomDelta*(t.shiftKey?3:1))},_zoomOut:function(t){!this._disabled&&this._map._zoom>this._map.getMinZoom()&&this._map.zoomOut(this._map.options.zoomDelta*(t.shiftKey?3:1))},_createButton:function(t,e,i,n,o){i=P("a",i,n);return 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this._addScales(n,e+"-line",i),t.on(n.updateWhenIdle?"moveend":"move",this._update,this),t.whenReady(this._update,this),i},onRemove:function(t){t.off(this.options.updateWhenIdle?"moveend":"move",this._update,this)},_addScales:function(t,e,i){t.metric&&(this._mScale=P("div",e,i)),t.imperial&&(this._iScale=P("div",e,i))},_update:function(){var t=this._map,e=t.getSize().y/2,t=t.distance(t.containerPointToLatLng([0,e]),t.containerPointToLatLng([this.options.maxWidth,e]));this._updateScales(t)},_updateScales:function(t){this.options.metric&&t&&this._updateMetric(t),this.options.imperial&&t&&this._updateImperial(t)},_updateMetric:function(t){var e=this._getRoundNum(t);this._updateScale(this._mScale,e<1e3?e+" m":e/1e3+" km",e/t)},_updateImperial:function(t){var e,i,t=3.2808399*t;5280<t?(i=this._getRoundNum(e=t/5280),this._updateScale(this._iScale,i+" mi",i/e)):(i=this._getRoundNum(t),this._updateScale(this._iScale,i+" 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this._update(),t.on("layeradd",this._addAttribution,this),this._container},onRemove:function(t){t.off("layeradd",this._addAttribution,this)},_addAttribution:function(t){t.layer.getAttribution&&(this.addAttribution(t.layer.getAttribution()),t.layer.once("remove",function(){this.removeAttribution(t.layer.getAttribution())},this))},setPrefix:function(t){return this.options.prefix=t,this._update(),this},addAttribution:function(t){return t&&(this._attributions[t]||(this._attributions[t]=0),this._attributions[t]++,this._update()),this},removeAttribution:function(t){return t&&this._attributions[t]&&(this._attributions[t]--,this._update()),this},_update:function(){if(this._map){var t,e=[];for(t in this._attributions)this._attributions[t]&&e.push(t);var i=[];this.options.prefix&&i.push(this.options.prefix),e.length&&i.push(e.join(", ")),this._container.innerHTML=i.join(' <span aria-hidden="true">|</span> 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t={originalEvent:this._lastEvent};this.fire("predrag",t),Z(this._element,this._newPos),this.fire("drag",t)},_onUp:function(){this._enabled&&this.finishDrag()},finishDrag:function(t){z(document.body,"leaflet-dragging"),this._lastTarget&&(z(this._lastTarget,"leaflet-drag-target"),this._lastTarget=null),k(document,"mousemove touchmove",this._onMove,this),k(document,"mouseup touchend touchcancel",this._onUp,this),Te(),ae();var e=this._moved&&this._moving;this._moving=!1,Xe._dragging=!1,e&&this.fire("dragend",{noInertia:t,distance:this._newPos.distanceTo(this._startPos)})}});function Je(t,e,i){for(var n,o,s,r,a,h,l,u=[1,4,2,8],c=0,d=t.length;c<d;c++)t[c]._code=si(t[c],e);for(s=0;s<4;s++){for(h=u[s],n=[],c=0,o=(d=t.length)-1;c<d;o=c++)r=t[c],a=t[o],r._code&h?a._code&h||((l=oi(a,r,h,e,i))._code=si(l,e),n.push(l)):(a._code&h&&((l=oi(a,r,h,e,i))._code=si(l,e),n.push(l)),n.push(r));t=n}return t}function $e(t,e){var i,n,o,s,r,a,h;if(!t||0===t.length)throw new Error("latlngs not 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e,i=t.target;i.hasLayer(this)&&(this._map=i,this._zoomAnimated=i._zoomAnimated,this.getEvents&&(e=this.getEvents(),i.on(e,this),this.once("remove",function(){i.off(e,this)},this)),this.onAdd(i),this.fire("add"),i.fire("layeradd",{layer:this}))}})),ui=(A.include({addLayer:function(t){var e;if(t._layerAdd)return e=h(t),this._layers[e]||((this._layers[e]=t)._mapToAdd=this,t.beforeAdd&&t.beforeAdd(this),this.whenReady(t._layerAdd,t)),this;throw new Error("The provided object is not a Layer.")},removeLayer:function(t){var e=h(t);return this._layers[e]&&(this._loaded&&t.onRemove(this),delete this._layers[e],this._loaded&&(this.fire("layerremove",{layer:t}),t.fire("remove")),t._map=t._mapToAdd=null),this},hasLayer:function(t){return h(t)in this._layers},eachLayer:function(t,e){for(var i in this._layers)t.call(e,this._layers[i]);return this},_addLayers:function(t){for(var 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i,n;if(c(this,e),this._layers={},t)for(i=0,n=t.length;i<n;i++)this.addLayer(t[i])},addLayer:function(t){var e=this.getLayerId(t);return this._layers[e]=t,this._map&&this._map.addLayer(t),this},removeLayer:function(t){t=t in this._layers?t:this.getLayerId(t);return this._map&&this._layers[t]&&this._map.removeLayer(this._layers[t]),delete this._layers[t],this},hasLayer:function(t){return("number"==typeof t?t:this.getLayerId(t))in this._layers},clearLayers:function(){return this.eachLayer(this.removeLayer,this)},invoke:function(t){var e,i,n=Array.prototype.slice.call(arguments,1);for(e in this._layers)(i=this._layers[e])[t]&&i[t].apply(i,n);return this},onAdd:function(t){this.eachLayer(t.addLayer,t)},onRemove:function(t){this.eachLayer(t.removeLayer,t)},eachLayer:function(t,e){for(var i in this._layers)t.call(e,this._layers[i]);return this},getLayer:function(t){return this._layers[t]},getLayers:function(){var t=[];return this.eachLayer(t.push,t),t},setZIndex:function(t){return this.invoke("setZIndex",t)},getLayerId:h})),ci=ui.extend({addLayer:function(t){return this.hasLayer(t)?this:(t.addEventParent(this),ui.prototype.addLayer.call(this,t),this.fire("layeradd",{layer:t}))},removeLayer:function(t){return this.hasLayer(t)?((t=t in this._layers?this._layers[t]:t).removeEventParent(this),ui.prototype.removeLayer.call(this,t),this.fire("layerremove",{layer:t})):this},setStyle:function(t){return this.invoke("setStyle",t)},bringToFront:function(){return this.invoke("bringToFront")},bringToBack:function(){return this.invoke("bringToBack")},getBounds:function(){var t,e=new s;for(t in this._layers){var i=this._layers[t];e.extend(i.getBounds?i.getBounds():i.getLatLng())}return e}}),di=et.extend({options:{popupAnchor:[0,0],tooltipAnchor:[0,0],crossOrigin:!1},initialize:function(t){c(this,t)},createIcon:function(t){return this._createIcon("icon",t)},createShadow:function(t){return this._createIcon("shadow",t)},_createIcon:function(t,e){var i=this._getIconUrl(t);if(i)return i=this._createImg(i,e&&"IMG"===e.tagName?e:null),this._setIconStyles(i,t),!this.options.crossOrigin&&""!==this.options.crossOrigin||(i.crossOrigin=!0===this.options.crossOrigin?"":this.options.crossOrigin),i;if("icon"===t)throw new Error("iconUrl not set in Icon options (see the docs).");return null},_setIconStyles:function(t,e){var i=this.options,n=i[e+"Size"],n=m(n="number"==typeof n?[n,n]:n),o=m("shadow"===e&&i.shadowAnchor||i.iconAnchor||n&&n.divideBy(2,!0));t.className="leaflet-marker-"+e+" "+(i.className||""),o&&(t.style.marginLeft=-o.x+"px",t.style.marginTop=-o.y+"px"),n&&(t.style.width=n.x+"px",t.style.height=n.y+"px")},_createImg:function(t,e){return(e=e||document.createElement("img")).src=t,e},_getIconUrl:function(t){return b.retina&&this.options[t+"RetinaUrl"]||this.options[t+"Url"]}});var _i=di.extend({options:{iconUrl:"marker-icon.png",iconRetinaUrl:"marker-icon-2x.png",shadowUrl:"marker-shadow.png",iconSize:[25,41],iconAnchor:[12,41],popupAnchor:[1,-34],tooltipAnchor:[16,-28],shadowSize:[41,41]},_getIconUrl:function(t){return"string"!=typeof _i.imagePath&&(_i.imagePath=this._detectIconPath()),(this.options.imagePath||_i.imagePath)+di.prototype._getIconUrl.call(this,t)},_stripUrl:function(t){function e(t,e,i){return(e=e.exec(t))&&e[i]}return(t=e(t,/^url\((['"])?(.+)\1\)$/,2))&&e(t,/^(.*)marker-icon\.png$/,1)},_detectIconPath:function(){var t=P("div","leaflet-default-icon-path",document.body),e=pe(t,"background-image")||pe(t,"backgroundImage");return document.body.removeChild(t),(e=this._stripUrl(e))?e:(t=document.querySelector('link[href$="leaflet.css"]'))?t.href.substring(0,t.href.length-"leaflet.css".length-1):""}}),pi=n.extend({initialize:function(t){this._marker=t},addHooks:function(){var t=this._marker._icon;this._draggable||(this._draggable=new Xe(t,t,!0)),this._draggable.on({dragstart:this._onDragStart,predrag:this._onPreDrag,drag:this._onDrag,dragend:this._onDragEnd},this).enable(),M(t,"leaflet-marker-draggable")},removeHooks:function(){this._draggable.off({dragstart:this._onDragStart,predrag:this._onPreDrag,drag:this._onDrag,dragend:this._onDragEnd},this).disable(),this._marker._icon&&z(this._marker._icon,"leaflet-marker-draggable")},moved:function(){return this._draggable&&this._draggable._moved},_adjustPan:function(t){var e=this._marker,i=e._map,n=this._marker.options.autoPanSpeed,o=this._marker.options.autoPanPadding,s=Pe(e._icon),r=i.getPixelBounds(),a=i.getPixelOrigin(),a=_(r.min._subtract(a).add(o),r.max._subtract(a).subtract(o));a.contains(s)||(o=m((Math.max(a.max.x,s.x)-a.max.x)/(r.max.x-a.max.x)-(Math.min(a.min.x,s.x)-a.min.x)/(r.min.x-a.min.x),(Math.max(a.max.y,s.y)-a.max.y)/(r.max.y-a.max.y)-(Math.min(a.min.y,s.y)-a.min.y)/(r.min.y-a.min.y)).multiplyBy(n),i.panBy(o,{animate:!1}),this._draggable._newPos._add(o),this._draggable._startPos._add(o),Z(e._icon,this._draggable._newPos),this._onDrag(t),this._panRequest=x(this._adjustPan.bind(this,t)))},_onDragStart:function(){this._oldLatLng=this._marker.getLatLng(),this._marker.closePopup&&this._marker.closePopup(),this._marker.fire("movestart").fire("dragstart")},_onPreDrag:function(t){this._marker.options.autoPan&&(r(this._panRequest),this._panRequest=x(this._adjustPan.bind(this,t)))},_onDrag:function(t){var e=this._marker,i=e._shadow,n=Pe(e._icon),o=e._map.layerPointToLatLng(n);i&&Z(i,n),e._latlng=o,t.latlng=o,t.oldLatLng=this._oldLatLng,e.fire("move",t).fire("drag",t)},_onDragEnd:function(t){r(this._panRequest),delete this._oldLatLng,this._marker.fire("moveend").fire("dragend",t)}}),mi=o.extend({options:{icon:new _i,interactive:!0,keyboard:!0,title:"",alt:"Marker",zIndexOffset:0,opacity:1,riseOnHover:!1,riseOffset:250,pane:"markerPane",shadowPane:"shadowPane",bubblingMouseEvents:!1,autoPanOnFocus:!0,draggable:!1,autoPan:!1,autoPanPadding:[50,50],autoPanSpeed:10},initialize:function(t,e){c(this,e),this._latlng=w(t)},onAdd:function(t){this._zoomAnimated=this._zoomAnimated&&t.options.markerZoomAnimation,this._zoomAnimated&&t.on("zoomanim",this._animateZoom,this),this._initIcon(),this.update()},onRemove:function(t){this.dragging&&this.dragging.enabled()&&(this.options.draggable=!0,this.dragging.removeHooks()),delete this.dragging,this._zoomAnimated&&t.off("zoomanim",this._animateZoom,this),this._removeIcon(),this._removeShadow()},getEvents:function(){return{zoom:this.update,viewreset:this.update}},getLatLng:function(){return this._latlng},setLatLng:function(t){var e=this._latlng;return this._latlng=w(t),this.update(),this.fire("move",{oldLatLng:e,latlng:this._latlng})},setZIndexOffset:function(t){return this.options.zIndexOffset=t,this.update()},getIcon:function(){return this.options.icon},setIcon:function(t){return this.options.icon=t,this._map&&(this._initIcon(),this.update()),this._popup&&this.bindPopup(this._popup,this._popup.options),this},getElement:function(){return this._icon},update:function(){var t;return this._icon&&this._map&&(t=this._map.latLngToLayerPoint(this._latlng).round(),this._setPos(t)),this},_initIcon:function(){var t=this.options,e="leaflet-zoom-"+(this._zoomAnimated?"animated":"hide"),i=t.icon.createIcon(this._icon),n=!1,i=(i!==this._icon&&(this._icon&&this._removeIcon(),n=!0,t.title&&(i.title=t.title),"IMG"===i.tagName&&(i.alt=t.alt||"")),M(i,e),t.keyboard&&(i.tabIndex="0",i.setAttribute("role","button")),this._icon=i,t.riseOnHover&&this.on({mouseover:this._bringToFront,mouseout:this._resetZIndex}),this.options.autoPanOnFocus&&S(i,"focus",this._panOnFocus,this),t.icon.createShadow(this._shadow)),o=!1;i!==this._shadow&&(this._removeShadow(),o=!0),i&&(M(i,e),i.alt=""),this._shadow=i,t.opacity<1&&this._updateOpacity(),n&&this.getPane().appendChild(this._icon),this._initInteraction(),i&&o&&this.getPane(t.shadowPane).appendChild(this._shadow)},_removeIcon:function(){this.options.riseOnHover&&this.off({mouseover:this._bringToFront,mouseout:this._resetZIndex}),this.options.autoPanOnFocus&&k(this._icon,"focus",this._panOnFocus,this),T(this._icon),this.removeInteractiveTarget(this._icon),this._icon=null},_removeShadow:function(){this._shadow&&T(this._shadow),this._shadow=null},_setPos:function(t){this._icon&&Z(this._icon,t),this._shadow&&Z(this._shadow,t),this._zIndex=t.y+this.options.zIndexOffset,this._resetZIndex()},_updateZIndex:function(t){this._icon&&(this._icon.style.zIndex=this._zIndex+t)},_animateZoom:function(t){t=this._map._latLngToNewLayerPoint(this._latlng,t.zoom,t.center).round();this._setPos(t)},_initInteraction:function(){var t;this.options.interactive&&(M(this._icon,"leaflet-interactive"),this.addInteractiveTarget(this._icon),pi&&(t=this.options.draggable,this.dragging&&(t=this.dragging.enabled(),this.dragging.disable()),this.dragging=new pi(this),t&&this.dragging.enable()))},setOpacity:function(t){return this.options.opacity=t,this._map&&this._updateOpacity(),this},_updateOpacity:function(){var t=this.options.opacity;this._icon&&C(this._icon,t),this._shadow&&C(this._shadow,t)},_bringToFront:function(){this._updateZIndex(this.options.riseOffset)},_resetZIndex:function(){this._updateZIndex(0)},_panOnFocus:function(){var t,e,i=this._map;i&&(t=(e=this.options.icon.options).iconSize?m(e.iconSize):m(0,0),e=e.iconAnchor?m(e.iconAnchor):m(0,0),i.panInside(this._latlng,{paddingTopLeft:e,paddingBottomRight:t.subtract(e)}))},_getPopupAnchor:function(){return this.options.icon.options.popupAnchor},_getTooltipAnchor:function(){return this.options.icon.options.tooltipAnchor}});var fi=o.extend({options:{stroke:!0,color:"#3388ff",weight:3,opacity:1,lineCap:"round",lineJoin:"round",dashArray:null,dashOffset:null,fill:!1,fillColor:null,fillOpacity:.2,fillRule:"evenodd",interactive:!0,bubblingMouseEvents:!0},beforeAdd:function(t){this._renderer=t.getRenderer(this)},onAdd:function(){this._renderer._initPath(this),this._reset(),this._renderer._addPath(this)},onRemove:function(){this._renderer._removePath(this)},redraw:function(){return this._map&&this._renderer._updatePath(this),this},setStyle:function(t){return c(this,t),this._renderer&&(this._renderer._updateStyle(this),this.options.stroke&&t&&Object.prototype.hasOwnProperty.call(t,"weight")&&this._updateBounds()),this},bringToFront:function(){return this._renderer&&this._renderer._bringToFront(this),this},bringToBack:function(){return this._renderer&&this._renderer._bringToBack(this),this},getElement:function(){return this._path},_reset:function(){this._project(),this._update()},_clickTolerance:function(){return(this.options.stroke?this.options.weight/2:0)+(this._renderer.options.tolerance||0)}}),gi=fi.extend({options:{fill:!0,radius:10},initialize:function(t,e){c(this,e),this._latlng=w(t),this._radius=this.options.radius},setLatLng:function(t){var e=this._latlng;return this._latlng=w(t),this.redraw(),this.fire("move",{oldLatLng:e,latlng:this._latlng})},getLatLng:function(){return this._latlng},setRadius:function(t){return this.options.radius=this._radius=t,this.redraw()},getRadius:function(){return this._radius},setStyle:function(t){var e=t&&t.radius||this._radius;return fi.prototype.setStyle.call(this,t),this.setRadius(e),this},_project:function(){this._point=this._map.latLngToLayerPoint(this._latlng),this._updateBounds()},_updateBounds:function(){var t=this._radius,e=this._radiusY||t,i=this._clickTolerance(),t=[t+i,e+i];this._pxBounds=new f(this._point.subtract(t),this._point.add(t))},_update:function(){this._map&&this._updatePath()},_updatePath:function(){this._renderer._updateCircle(this)},_empty:function(){return this._radius&&!this._renderer._bounds.intersects(this._pxBounds)},_containsPoint:function(t){return t.distanceTo(this._point)<=this._radius+this._clickTolerance()}});var vi=gi.extend({initialize:function(t,e,i){if(c(this,e="number"==typeof e?l({},i,{radius:e}):e),this._latlng=w(t),isNaN(this.options.radius))throw new Error("Circle radius cannot be NaN");this._mRadius=this.options.radius},setRadius:function(t){return this._mRadius=t,this.redraw()},getRadius:function(){return this._mRadius},getBounds:function(){var t=[this._radius,this._radiusY||this._radius];return new s(this._map.layerPointToLatLng(this._point.subtract(t)),this._map.layerPointToLatLng(this._point.add(t)))},setStyle:fi.prototype.setStyle,_project:function(){var t,e,i,n,o,s=this._latlng.lng,r=this._latlng.lat,a=this._map,h=a.options.crs;h.distance===st.distance?(n=Math.PI/180,o=this._mRadius/st.R/n,t=a.project([r+o,s]),e=a.project([r-o,s]),e=t.add(e).divideBy(2),i=a.unproject(e).lat,n=Math.acos((Math.cos(o*n)-Math.sin(r*n)*Math.sin(i*n))/(Math.cos(r*n)*Math.cos(i*n)))/n,!isNaN(n)&&0!==n||(n=o/Math.cos(Math.PI/180*r)),this._point=e.subtract(a.getPixelOrigin()),this._radius=isNaN(n)?0:e.x-a.project([i,s-n]).x,this._radiusY=e.y-t.y):(o=h.unproject(h.project(this._latlng).subtract([this._mRadius,0])),this._point=a.latLngToLayerPoint(this._latlng),this._radius=this._point.x-a.latLngToLayerPoint(o).x),this._updateBounds()}});var yi=fi.extend({options:{smoothFactor:1,noClip:!1},initialize:function(t,e){c(this,e),this._setLatLngs(t)},getLatLngs:function(){return this._latlngs},setLatLngs:function(t){return this._setLatLngs(t),this.redraw()},isEmpty:function(){return!this._latlngs.length},closestLayerPoint:function(t){for(var e=1/0,i=null,n=ri,o=0,s=this._parts.length;o<s;o++)for(var r=this._parts[o],a=1,h=r.length;a<h;a++){var l,u,c=n(t,l=r[a-1],u=r[a],!0);c<e&&(e=c,i=n(t,l,u))}return i&&(i.distance=Math.sqrt(e)),i},getCenter:function(){if(this._map)return hi(this._defaultShape(),this._map.options.crs);throw new Error("Must add layer to map before using getCenter()")},getBounds:function(){return this._bounds},addLatLng:function(t,e){return e=e||this._defaultShape(),t=w(t),e.push(t),this._bounds.extend(t),this.redraw()},_setLatLngs:function(t){this._bounds=new s,this._latlngs=this._convertLatLngs(t)},_defaultShape:function(){return I(this._latlngs)?this._latlngs:this._latlngs[0]},_convertLatLngs:function(t){for(var e=[],i=I(t),n=0,o=t.length;n<o;n++)i?(e[n]=w(t[n]),this._bounds.extend(e[n])):e[n]=this._convertLatLngs(t[n]);return e},_project:function(){var t=new f;this._rings=[],this._projectLatlngs(this._latlngs,this._rings,t),this._bounds.isValid()&&t.isValid()&&(this._rawPxBounds=t,this._updateBounds())},_updateBounds:function(){var t=this._clickTolerance(),t=new p(t,t);this._rawPxBounds&&(this._pxBounds=new f([this._rawPxBounds.min.subtract(t),this._rawPxBounds.max.add(t)]))},_projectLatlngs:function(t,e,i){var n,o,s=t[0]instanceof v,r=t.length;if(s){for(o=[],n=0;n<r;n++)o[n]=this._map.latLngToLayerPoint(t[n]),i.extend(o[n]);e.push(o)}else for(n=0;n<r;n++)this._projectLatlngs(t[n],e,i)},_clipPoints:function(){var t=this._renderer._bounds;if(this._parts=[],this._pxBounds&&this._pxBounds.intersects(t))if(this.options.noClip)this._parts=this._rings;else for(var e,i,n,o,s=this._parts,r=0,a=0,h=this._rings.length;r<h;r++)for(e=0,i=(o=this._rings[r]).length;e<i-1;e++)(n=ni(o[e],o[e+1],t,e,!0))&&(s[a]=s[a]||[],s[a].push(n[0]),n[1]===o[e+1]&&e!==i-2||(s[a].push(n[1]),a++))},_simplifyPoints:function(){for(var t=this._parts,e=this.options.smoothFactor,i=0,n=t.length;i<n;i++)t[i]=ei(t[i],e)},_update:function(){this._map&&(this._clipPoints(),this._simplifyPoints(),this._updatePath())},_updatePath:function(){this._renderer._updatePoly(this)},_containsPoint:function(t,e){var i,n,o,s,r,a,h=this._clickTolerance();if(this._pxBounds&&this._pxBounds.contains(t))for(i=0,s=this._parts.length;i<s;i++)for(n=0,o=(r=(a=this._parts[i]).length)-1;n<r;o=n++)if((e||0!==n)&&ii(t,a[o],a[n])<=h)return!0;return!1}});yi._flat=ai;var xi=yi.extend({options:{fill:!0},isEmpty:function(){return!this._latlngs.length||!this._latlngs[0].length},getCenter:function(){if(this._map)return $e(this._defaultShape(),this._map.options.crs);throw new Error("Must add layer to map before using getCenter()")},_convertLatLngs:function(t){var t=yi.prototype._convertLatLngs.call(this,t),e=t.length;return 2<=e&&t[0]instanceof v&&t[0].equals(t[e-1])&&t.pop(),t},_setLatLngs:function(t){yi.prototype._setLatLngs.call(this,t),I(this._latlngs)&&(this._latlngs=[this._latlngs])},_defaultShape:function(){return(I(this._latlngs[0])?this._latlngs:this._latlngs[0])[0]},_clipPoints:function(){var t=this._renderer._bounds,e=this.options.weight,e=new p(e,e),t=new f(t.min.subtract(e),t.max.add(e));if(this._parts=[],this._pxBounds&&this._pxBounds.intersects(t))if(this.options.noClip)this._parts=this._rings;else for(var i,n=0,o=this._rings.length;n<o;n++)(i=Je(this._rings[n],t,!0)).length&&this._parts.push(i)},_updatePath:function(){this._renderer._updatePoly(this,!0)},_containsPoint:function(t){var e,i,n,o,s,r,a,h,l=!1;if(!this._pxBounds||!this._pxBounds.contains(t))return!1;for(o=0,a=this._parts.length;o<a;o++)for(s=0,r=(h=(e=this._parts[o]).length)-1;s<h;r=s++)i=e[s],n=e[r],i.y>t.y!=n.y>t.y&&t.x<(n.x-i.x)*(t.y-i.y)/(n.y-i.y)+i.x&&(l=!l);return l||yi.prototype._containsPoint.call(this,t,!0)}});var wi=ci.extend({initialize:function(t,e){c(this,e),this._layers={},t&&this.addData(t)},addData:function(t){var e,i,n,o=d(t)?t:t.features;if(o){for(e=0,i=o.length;e<i;e++)((n=o[e]).geometries||n.geometry||n.features||n.coordinates)&&this.addData(n);return this}var s,r=this.options;return(!r.filter||r.filter(t))&&(s=bi(t,r))?(s.feature=Zi(t),s.defaultOptions=s.options,this.resetStyle(s),r.onEachFeature&&r.onEachFeature(t,s),this.addLayer(s)):this},resetStyle:function(t){return void 0===t?this.eachLayer(this.resetStyle,this):(t.options=l({},t.defaultOptions),this._setLayerStyle(t,this.options.style),this)},setStyle:function(e){return this.eachLayer(function(t){this._setLayerStyle(t,e)},this)},_setLayerStyle:function(t,e){t.setStyle&&("function"==typeof e&&(e=e(t.feature)),t.setStyle(e))}});function bi(t,e){var i,n,o,s,r="Feature"===t.type?t.geometry:t,a=r?r.coordinates:null,h=[],l=e&&e.pointToLayer,u=e&&e.coordsToLatLng||Li;if(!a&&!r)return null;switch(r.type){case"Point":return Pi(l,t,i=u(a),e);case"MultiPoint":for(o=0,s=a.length;o<s;o++)i=u(a[o]),h.push(Pi(l,t,i,e));return new ci(h);case"LineString":case"MultiLineString":return n=Ti(a,"LineString"===r.type?0:1,u),new yi(n,e);case"Polygon":case"MultiPolygon":return n=Ti(a,"Polygon"===r.type?1:2,u),new xi(n,e);case"GeometryCollection":for(o=0,s=r.geometries.length;o<s;o++){var c=bi({geometry:r.geometries[o],type:"Feature",properties:t.properties},e);c&&h.push(c)}return new ci(h);case"FeatureCollection":for(o=0,s=r.features.length;o<s;o++){var d=bi(r.features[o],e);d&&h.push(d)}return new ci(h);default:throw new Error("Invalid GeoJSON object.")}}function Pi(t,e,i,n){return t?t(e,i):new mi(i,n&&n.markersInheritOptions&&n)}function Li(t){return new v(t[1],t[0],t[2])}function Ti(t,e,i){for(var n,o=[],s=0,r=t.length;s<r;s++)n=e?Ti(t[s],e-1,i):(i||Li)(t[s]),o.push(n);return o}function Mi(t,e){return void 0!==(t=w(t)).alt?[i(t.lng,e),i(t.lat,e),i(t.alt,e)]:[i(t.lng,e),i(t.lat,e)]}function zi(t,e,i,n){for(var o=[],s=0,r=t.length;s<r;s++)o.push(e?zi(t[s],I(t[s])?0:e-1,i,n):Mi(t[s],n));return!e&&i&&0<o.length&&o.push(o[0].slice()),o}function Ci(t,e){return t.feature?l({},t.feature,{geometry:e}):Zi(e)}function Zi(t){return"Feature"===t.type||"FeatureCollection"===t.type?t:{type:"Feature",properties:{},geometry:t}}Tt={toGeoJSON:function(t){return Ci(this,{type:"Point",coordinates:Mi(this.getLatLng(),t)})}};function Si(t,e){return new wi(t,e)}mi.include(Tt),vi.include(Tt),gi.include(Tt),yi.include({toGeoJSON:function(t){var e=!I(this._latlngs);return Ci(this,{type:(e?"Multi":"")+"LineString",coordinates:zi(this._latlngs,e?1:0,!1,t)})}}),xi.include({toGeoJSON:function(t){var e=!I(this._latlngs),i=e&&!I(this._latlngs[0]),t=zi(this._latlngs,i?2:e?1:0,!0,t);return Ci(this,{type:(i?"Multi":"")+"Polygon",coordinates:t=e?t:[t]})}}),ui.include({toMultiPoint:function(e){var i=[];return this.eachLayer(function(t){i.push(t.toGeoJSON(e).geometry.coordinates)}),Ci(this,{type:"MultiPoint",coordinates:i})},toGeoJSON:function(e){var i,n,t=this.feature&&this.feature.geometry&&this.feature.geometry.type;return"MultiPoint"===t?this.toMultiPoint(e):(i="GeometryCollection"===t,n=[],this.eachLayer(function(t){t.toGeoJSON&&(t=t.toGeoJSON(e),i?n.push(t.geometry):"FeatureCollection"===(t=Zi(t)).type?n.push.apply(n,t.features):n.push(t))}),i?Ci(this,{geometries:n,type:"GeometryCollection"}):{type:"FeatureCollection",features:n})}});var Mt=Si,Ei=o.extend({options:{opacity:1,alt:"",interactive:!1,crossOrigin:!1,errorOverlayUrl:"",zIndex:1,className:""},initialize:function(t,e,i){this._url=t,this._bounds=g(e),c(this,i)},onAdd:function(){this._image||(this._initImage(),this.options.opacity<1&&this._updateOpacity()),this.options.interactive&&(M(this._image,"leaflet-interactive"),this.addInteractiveTarget(this._image)),this.getPane().appendChild(this._image),this._reset()},onRemove:function(){T(this._image),this.options.interactive&&this.removeInteractiveTarget(this._image)},setOpacity:function(t){return this.options.opacity=t,this._image&&this._updateOpacity(),this},setStyle:function(t){return t.opacity&&this.setOpacity(t.opacity),this},bringToFront:function(){return this._map&&fe(this._image),this},bringToBack:function(){return this._map&&ge(this._image),this},setUrl:function(t){return this._url=t,this._image&&(this._image.src=t),this},setBounds:function(t){return this._bounds=g(t),this._map&&this._reset(),this},getEvents:function(){var t={zoom:this._reset,viewreset:this._reset};return this._zoomAnimated&&(t.zoomanim=this._animateZoom),t},setZIndex:function(t){return this.options.zIndex=t,this._updateZIndex(),this},getBounds:function(){return this._bounds},getElement:function(){return this._image},_initImage:function(){var t="IMG"===this._url.tagName,e=this._image=t?this._url:P("img");M(e,"leaflet-image-layer"),this._zoomAnimated&&M(e,"leaflet-zoom-animated"),this.options.className&&M(e,this.options.className),e.onselectstart=u,e.onmousemove=u,e.onload=a(this.fire,this,"load"),e.onerror=a(this._overlayOnError,this,"error"),!this.options.crossOrigin&&""!==this.options.crossOrigin||(e.crossOrigin=!0===this.options.crossOrigin?"":this.options.crossOrigin),this.options.zIndex&&this._updateZIndex(),t?this._url=e.src:(e.src=this._url,e.alt=this.options.alt)},_animateZoom:function(t){var e=this._map.getZoomScale(t.zoom),t=this._map._latLngBoundsToNewLayerBounds(this._bounds,t.zoom,t.center).min;be(this._image,t,e)},_reset:function(){var t=this._image,e=new f(this._map.latLngToLayerPoint(this._bounds.getNorthWest()),this._map.latLngToLayerPoint(this._bounds.getSouthEast())),i=e.getSize();Z(t,e.min),t.style.width=i.x+"px",t.style.height=i.y+"px"},_updateOpacity:function(){C(this._image,this.options.opacity)},_updateZIndex:function(){this._image&&void 0!==this.options.zIndex&&null!==this.options.zIndex&&(this._image.style.zIndex=this.options.zIndex)},_overlayOnError:function(){this.fire("error");var t=this.options.errorOverlayUrl;t&&this._url!==t&&(this._url=t,this._image.src=t)},getCenter:function(){return this._bounds.getCenter()}}),ki=Ei.extend({options:{autoplay:!0,loop:!0,keepAspectRatio:!0,muted:!1,playsInline:!0},_initImage:function(){var t="VIDEO"===this._url.tagName,e=this._image=t?this._url:P("video");if(M(e,"leaflet-image-layer"),this._zoomAnimated&&M(e,"leaflet-zoom-animated"),this.options.className&&M(e,this.options.className),e.onselectstart=u,e.onmousemove=u,e.onloadeddata=a(this.fire,this,"load"),t){for(var i=e.getElementsByTagName("source"),n=[],o=0;o<i.length;o++)n.push(i[o].src);this._url=0<i.length?n:[e.src]}else{d(this._url)||(this._url=[this._url]),!this.options.keepAspectRatio&&Object.prototype.hasOwnProperty.call(e.style,"objectFit")&&(e.style.objectFit="fill"),e.autoplay=!!this.options.autoplay,e.loop=!!this.options.loop,e.muted=!!this.options.muted,e.playsInline=!!this.options.playsInline;for(var s=0;s<this._url.length;s++){var r=P("source");r.src=this._url[s],e.appendChild(r)}}}});var Oi=Ei.extend({_initImage:function(){var t=this._image=this._url;M(t,"leaflet-image-layer"),this._zoomAnimated&&M(t,"leaflet-zoom-animated"),this.options.className&&M(t,this.options.className),t.onselectstart=u,t.onmousemove=u}});var Ai=o.extend({options:{interactive:!1,offset:[0,0],className:"",pane:void 0,content:""},initialize:function(t,e){t&&(t instanceof v||d(t))?(this._latlng=w(t),c(this,e)):(c(this,t),this._source=e),this.options.content&&(this._content=this.options.content)},openOn:function(t){return(t=arguments.length?t:this._source._map).hasLayer(this)||t.addLayer(this),this},close:function(){return this._map&&this._map.removeLayer(this),this},toggle:function(t){return this._map?this.close():(arguments.length?this._source=t:t=this._source,this._prepareOpen(),this.openOn(t._map)),this},onAdd:function(t){this._zoomAnimated=t._zoomAnimated,this._container||this._initLayout(),t._fadeAnimated&&C(this._container,0),clearTimeout(this._removeTimeout),this.getPane().appendChild(this._container),this.update(),t._fadeAnimated&&C(this._container,1),this.bringToFront(),this.options.interactive&&(M(this._container,"leaflet-interactive"),this.addInteractiveTarget(this._container))},onRemove:function(t){t._fadeAnimated?(C(this._container,0),this._removeTimeout=setTimeout(a(T,void 0,this._container),200)):T(this._container),this.options.interactive&&(z(this._container,"leaflet-interactive"),this.removeInteractiveTarget(this._container))},getLatLng:function(){return this._latlng},setLatLng:function(t){return this._latlng=w(t),this._map&&(this._updatePosition(),this._adjustPan()),this},getContent:function(){return this._content},setContent:function(t){return this._content=t,this.update(),this},getElement:function(){return this._container},update:function(){this._map&&(this._container.style.visibility="hidden",this._updateContent(),this._updateLayout(),this._updatePosition(),this._container.style.visibility="",this._adjustPan())},getEvents:function(){var t={zoom:this._updatePosition,viewreset:this._updatePosition};return this._zoomAnimated&&(t.zoomanim=this._animateZoom),t},isOpen:function(){return!!this._map&&this._map.hasLayer(this)},bringToFront:function(){return this._map&&fe(this._container),this},bringToBack:function(){return this._map&&ge(this._container),this},_prepareOpen:function(t){if(!(i=this._source)._map)return!1;if(i instanceof ci){var e,i=null,n=this._source._layers;for(e in n)if(n[e]._map){i=n[e];break}if(!i)return!1;this._source=i}if(!t)if(i.getCenter)t=i.getCenter();else if(i.getLatLng)t=i.getLatLng();else{if(!i.getBounds)throw new Error("Unable to get source layer LatLng.");t=i.getBounds().getCenter()}return this.setLatLng(t),this._map&&this.update(),!0},_updateContent:function(){if(this._content){var t=this._contentNode,e="function"==typeof this._content?this._content(this._source||this):this._content;if("string"==typeof e)t.innerHTML=e;else{for(;t.hasChildNodes();)t.removeChild(t.firstChild);t.appendChild(e)}this.fire("contentupdate")}},_updatePosition:function(){var t,e,i;this._map&&(e=this._map.latLngToLayerPoint(this._latlng),t=m(this.options.offset),i=this._getAnchor(),this._zoomAnimated?Z(this._container,e.add(i)):t=t.add(e).add(i),e=this._containerBottom=-t.y,i=this._containerLeft=-Math.round(this._containerWidth/2)+t.x,this._container.style.bottom=e+"px",this._container.style.left=i+"px")},_getAnchor:function(){return[0,0]}}),Bi=(A.include({_initOverlay:function(t,e,i,n){var o=e;return o instanceof t||(o=new t(n).setContent(e)),i&&o.setLatLng(i),o}}),o.include({_initOverlay:function(t,e,i,n){var o=i;return o instanceof t?(c(o,n),o._source=this):(o=e&&!n?e:new t(n,this)).setContent(i),o}}),Ai.extend({options:{pane:"popupPane",offset:[0,7],maxWidth:300,minWidth:50,maxHeight:null,autoPan:!0,autoPanPaddingTopLeft:null,autoPanPaddingBottomRight:null,autoPanPadding:[5,5],keepInView:!1,closeButton:!0,autoClose:!0,closeOnEscapeKey:!0,className:""},openOn:function(t){return!(t=arguments.length?t:this._source._map).hasLayer(this)&&t._popup&&t._popup.options.autoClose&&t.removeLayer(t._popup),t._popup=this,Ai.prototype.openOn.call(this,t)},onAdd:function(t){Ai.prototype.onAdd.call(this,t),t.fire("popupopen",{popup:this}),this._source&&(this._source.fire("popupopen",{popup:this},!0),this._source instanceof fi||this._source.on("preclick",Ae))},onRemove:function(t){Ai.prototype.onRemove.call(this,t),t.fire("popupclose",{popup:this}),this._source&&(this._source.fire("popupclose",{popup:this},!0),this._source instanceof fi||this._source.off("preclick",Ae))},getEvents:function(){var t=Ai.prototype.getEvents.call(this);return(void 0!==this.options.closeOnClick?this.options.closeOnClick:this._map.options.closePopupOnClick)&&(t.preclick=this.close),this.options.keepInView&&(t.moveend=this._adjustPan),t},_initLayout:function(){var t="leaflet-popup",e=this._container=P("div",t+" "+(this.options.className||"")+" leaflet-zoom-animated"),i=this._wrapper=P("div",t+"-content-wrapper",e);this._contentNode=P("div",t+"-content",i),Ie(e),Be(this._contentNode),S(e,"contextmenu",Ae),this._tipContainer=P("div",t+"-tip-container",e),this._tip=P("div",t+"-tip",this._tipContainer),this.options.closeButton&&((i=this._closeButton=P("a",t+"-close-button",e)).setAttribute("role","button"),i.setAttribute("aria-label","Close popup"),i.href="#close",i.innerHTML='<span aria-hidden="true">&#215;</span>',S(i,"click",function(t){O(t),this.close()},this))},_updateLayout:function(){var t=this._contentNode,e=t.style,i=(e.width="",e.whiteSpace="nowrap",t.offsetWidth),i=Math.min(i,this.options.maxWidth),i=(i=Math.max(i,this.options.minWidth),e.width=i+1+"px",e.whiteSpace="",e.height="",t.offsetHeight),n=this.options.maxHeight,o="leaflet-popup-scrolled";(n&&n<i?(e.height=n+"px",M):z)(t,o),this._containerWidth=this._container.offsetWidth},_animateZoom:function(t){var t=this._map._latLngToNewLayerPoint(this._latlng,t.zoom,t.center),e=this._getAnchor();Z(this._container,t.add(e))},_adjustPan:function(){var t,e,i,n,o,s,r,a;this.options.autoPan&&(this._map._panAnim&&this._map._panAnim.stop(),this._autopanning?this._autopanning=!1:(t=this._map,e=parseInt(pe(this._container,"marginBottom"),10)||0,e=this._container.offsetHeight+e,a=this._containerWidth,(i=new p(this._containerLeft,-e-this._containerBottom))._add(Pe(this._container)),i=t.layerPointToContainerPoint(i),o=m(this.options.autoPanPadding),n=m(this.options.autoPanPaddingTopLeft||o),o=m(this.options.autoPanPaddingBottomRight||o),s=t.getSize(),r=0,i.x+a+o.x>s.x&&(r=i.x+a-s.x+o.x),i.x-r-n.x<(a=0)&&(r=i.x-n.x),i.y+e+o.y>s.y&&(a=i.y+e-s.y+o.y),i.y-a-n.y<0&&(a=i.y-n.y),(r||a)&&(this.options.keepInView&&(this._autopanning=!0),t.fire("autopanstart").panBy([r,a]))))},_getAnchor:function(){return m(this._source&&this._source._getPopupAnchor?this._source._getPopupAnchor():[0,0])}})),Ii=(A.mergeOptions({closePopupOnClick:!0}),A.include({openPopup:function(t,e,i){return this._initOverlay(Bi,t,e,i).openOn(this),this},closePopup:function(t){return(t=arguments.length?t:this._popup)&&t.close(),this}}),o.include({bindPopup:function(t,e){return this._popup=this._initOverlay(Bi,this._popup,t,e),this._popupHandlersAdded||(this.on({click:this._openPopup,keypress:this._onKeyPress,remove:this.closePopup,move:this._movePopup}),this._popupHandlersAdded=!0),this},unbindPopup:function(){return this._popup&&(this.off({click:this._openPopup,keypress:this._onKeyPress,remove:this.closePopup,move:this._movePopup}),this._popupHandlersAdded=!1,this._popup=null),this},openPopup:function(t){return this._popup&&(this instanceof ci||(this._popup._source=this),this._popup._prepareOpen(t||this._latlng)&&this._popup.openOn(this._map)),this},closePopup:function(){return this._popup&&this._popup.close(),this},togglePopup:function(){return this._popup&&this._popup.toggle(this),this},isPopupOpen:function(){return!!this._popup&&this._popup.isOpen()},setPopupContent:function(t){return this._popup&&this._popup.setContent(t),this},getPopup:function(){return this._popup},_openPopup:function(t){var e;this._popup&&this._map&&(Re(t),e=t.layer||t.target,this._popup._source!==e||e instanceof fi?(this._popup._source=e,this.openPopup(t.latlng)):this._map.hasLayer(this._popup)?this.closePopup():this.openPopup(t.latlng))},_movePopup:function(t){this._popup.setLatLng(t.latlng)},_onKeyPress:function(t){13===t.originalEvent.keyCode&&this._openPopup(t)}}),Ai.extend({options:{pane:"tooltipPane",offset:[0,0],direction:"auto",permanent:!1,sticky:!1,opacity:.9},onAdd:function(t){Ai.prototype.onAdd.call(this,t),this.setOpacity(this.options.opacity),t.fire("tooltipopen",{tooltip:this}),this._source&&(this.addEventParent(this._source),this._source.fire("tooltipopen",{tooltip:this},!0))},onRemove:function(t){Ai.prototype.onRemove.call(this,t),t.fire("tooltipclose",{tooltip:this}),this._source&&(this.removeEventParent(this._source),this._source.fire("tooltipclose",{tooltip:this},!0))},getEvents:function(){var t=Ai.prototype.getEvents.call(this);return this.options.permanent||(t.preclick=this.close),t},_initLayout:function(){var t="leaflet-tooltip "+(this.options.className||"")+" leaflet-zoom-"+(this._zoomAnimated?"animated":"hide");this._contentNode=this._container=P("div",t),this._container.setAttribute("role","tooltip"),this._container.setAttribute("id","leaflet-tooltip-"+h(this))},_updateLayout:function(){},_adjustPan:function(){},_setPosition:function(t){var e,i=this._map,n=this._container,o=i.latLngToContainerPoint(i.getCenter()),i=i.layerPointToContainerPoint(t),s=this.options.direction,r=n.offsetWidth,a=n.offsetHeight,h=m(this.options.offset),l=this._getAnchor(),i="top"===s?(e=r/2,a):"bottom"===s?(e=r/2,0):(e="center"===s?r/2:"right"===s?0:"left"===s?r:i.x<o.x?(s="right",0):(s="left",r+2*(h.x+l.x)),a/2);t=t.subtract(m(e,i,!0)).add(h).add(l),z(n,"leaflet-tooltip-right"),z(n,"leaflet-tooltip-left"),z(n,"leaflet-tooltip-top"),z(n,"leaflet-tooltip-bottom"),M(n,"leaflet-tooltip-"+s),Z(n,t)},_updatePosition:function(){var t=this._map.latLngToLayerPoint(this._latlng);this._setPosition(t)},setOpacity:function(t){this.options.opacity=t,this._container&&C(this._container,t)},_animateZoom:function(t){t=this._map._latLngToNewLayerPoint(this._latlng,t.zoom,t.center);this._setPosition(t)},_getAnchor:function(){return m(this._source&&this._source._getTooltipAnchor&&!this.options.sticky?this._source._getTooltipAnchor():[0,0])}})),Ri=(A.include({openTooltip:function(t,e,i){return this._initOverlay(Ii,t,e,i).openOn(this),this},closeTooltip:function(t){return t.close(),this}}),o.include({bindTooltip:function(t,e){return this._tooltip&&this.isTooltipOpen()&&this.unbindTooltip(),this._tooltip=this._initOverlay(Ii,this._tooltip,t,e),this._initTooltipInteractions(),this._tooltip.options.permanent&&this._map&&this._map.hasLayer(this)&&this.openTooltip(),this},unbindTooltip:function(){return this._tooltip&&(this._initTooltipInteractions(!0),this.closeTooltip(),this._tooltip=null),this},_initTooltipInteractions:function(t){var e,i;!t&&this._tooltipHandlersAdded||(e=t?"off":"on",i={remove:this.closeTooltip,move:this._moveTooltip},this._tooltip.options.permanent?i.add=this._openTooltip:(i.mouseover=this._openTooltip,i.mouseout=this.closeTooltip,i.click=this._openTooltip,this._map?this._addFocusListeners():i.add=this._addFocusListeners),this._tooltip.options.sticky&&(i.mousemove=this._moveTooltip),this[e](i),this._tooltipHandlersAdded=!t)},openTooltip:function(t){return this._tooltip&&(this instanceof ci||(this._tooltip._source=this),this._tooltip._prepareOpen(t)&&(this._tooltip.openOn(this._map),this.getElement?this._setAriaDescribedByOnLayer(this):this.eachLayer&&this.eachLayer(this._setAriaDescribedByOnLayer,this))),this},closeTooltip:function(){if(this._tooltip)return this._tooltip.close()},toggleTooltip:function(){return this._tooltip&&this._tooltip.toggle(this),this},isTooltipOpen:function(){return this._tooltip.isOpen()},setTooltipContent:function(t){return this._tooltip&&this._tooltip.setContent(t),this},getTooltip:function(){return this._tooltip},_addFocusListeners:function(){this.getElement?this._addFocusListenersOnLayer(this):this.eachLayer&&this.eachLayer(this._addFocusListenersOnLayer,this)},_addFocusListenersOnLayer:function(t){var e="function"==typeof t.getElement&&t.getElement();e&&(S(e,"focus",function(){this._tooltip._source=t,this.openTooltip()},this),S(e,"blur",this.closeTooltip,this))},_setAriaDescribedByOnLayer:function(t){t="function"==typeof t.getElement&&t.getElement();t&&t.setAttribute("aria-describedby",this._tooltip._container.id)},_openTooltip:function(t){var e;this._tooltip&&this._map&&(this._map.dragging&&this._map.dragging.moving()&&!this._openOnceFlag?(this._openOnceFlag=!0,(e=this)._map.once("moveend",function(){e._openOnceFlag=!1,e._openTooltip(t)})):(this._tooltip._source=t.layer||t.target,this.openTooltip(this._tooltip.options.sticky?t.latlng:void 0)))},_moveTooltip:function(t){var e=t.latlng;this._tooltip.options.sticky&&t.originalEvent&&(t=this._map.mouseEventToContainerPoint(t.originalEvent),t=this._map.containerPointToLayerPoint(t),e=this._map.layerPointToLatLng(t)),this._tooltip.setLatLng(e)}}),di.extend({options:{iconSize:[12,12],html:!1,bgPos:null,className:"leaflet-div-icon"},createIcon:function(t){var t=t&&"DIV"===t.tagName?t:document.createElement("div"),e=this.options;return e.html instanceof Element?(me(t),t.appendChild(e.html)):t.innerHTML=!1!==e.html?e.html:"",e.bgPos&&(e=m(e.bgPos),t.style.backgroundPosition=-e.x+"px "+-e.y+"px"),this._setIconStyles(t,"icon"),t},createShadow:function(){return null}}));di.Default=_i;var Ni=o.extend({options:{tileSize:256,opacity:1,updateWhenIdle:b.mobile,updateWhenZooming:!0,updateInterval:200,zIndex:1,bounds:null,minZoom:0,maxZoom:void 0,maxNativeZoom:void 0,minNativeZoom:void 0,noWrap:!1,pane:"tilePane",className:"",keepBuffer:2},initialize:function(t){c(this,t)},onAdd:function(){this._initContainer(),this._levels={},this._tiles={},this._resetView()},beforeAdd:function(t){t._addZoomLimit(this)},onRemove:function(t){this._removeAllTiles(),T(this._container),t._removeZoomLimit(this),this._container=null,this._tileZoom=void 0},bringToFront:function(){return this._map&&(fe(this._container),this._setAutoZIndex(Math.max)),this},bringToBack:function(){return this._map&&(ge(this._container),this._setAutoZIndex(Math.min)),this},getContainer:function(){return this._container},setOpacity:function(t){return this.options.opacity=t,this._updateOpacity(),this},setZIndex:function(t){return this.options.zIndex=t,this._updateZIndex(),this},isLoading:function(){return this._loading},redraw:function(){var t;return this._map&&(this._removeAllTiles(),(t=this._clampZoom(this._map.getZoom()))!==this._tileZoom&&(this._tileZoom=t,this._updateLevels()),this._update()),this},getEvents:function(){var t={viewprereset:this._invalidateAll,viewreset:this._resetView,zoom:this._resetView,moveend:this._onMoveEnd};return this.options.updateWhenIdle||(this._onMove||(this._onMove=j(this._onMoveEnd,this.options.updateInterval,this)),t.move=this._onMove),this._zoomAnimated&&(t.zoomanim=this._animateZoom),t},createTile:function(){return document.createElement("div")},getTileSize:function(){var t=this.options.tileSize;return t instanceof p?t:new p(t,t)},_updateZIndex:function(){this._container&&void 0!==this.options.zIndex&&null!==this.options.zIndex&&(this._container.style.zIndex=this.options.zIndex)},_setAutoZIndex:function(t){for(var e,i=this.getPane().children,n=-t(-1/0,1/0),o=0,s=i.length;o<s;o++)e=i[o].style.zIndex,i[o]!==this._container&&e&&(n=t(n,+e));isFinite(n)&&(this.options.zIndex=n+t(-1,1),this._updateZIndex())},_updateOpacity:function(){if(this._map&&!b.ielt9){C(this._container,this.options.opacity);var t,e=+new Date,i=!1,n=!1;for(t in this._tiles){var o,s=this._tiles[t];s.current&&s.loaded&&(o=Math.min(1,(e-s.loaded)/200),C(s.el,o),o<1?i=!0:(s.active?n=!0:this._onOpaqueTile(s),s.active=!0))}n&&!this._noPrune&&this._pruneTiles(),i&&(r(this._fadeFrame),this._fadeFrame=x(this._updateOpacity,this))}},_onOpaqueTile:u,_initContainer:function(){this._container||(this._container=P("div","leaflet-layer "+(this.options.className||"")),this._updateZIndex(),this.options.opacity<1&&this._updateOpacity(),this.getPane().appendChild(this._container))},_updateLevels:function(){var t=this._tileZoom,e=this.options.maxZoom;if(void 0!==t){for(var i in this._levels)i=Number(i),this._levels[i].el.children.length||i===t?(this._levels[i].el.style.zIndex=e-Math.abs(t-i),this._onUpdateLevel(i)):(T(this._levels[i].el),this._removeTilesAtZoom(i),this._onRemoveLevel(i),delete this._levels[i]);var n=this._levels[t],o=this._map;return n||((n=this._levels[t]={}).el=P("div","leaflet-tile-container leaflet-zoom-animated",this._container),n.el.style.zIndex=e,n.origin=o.project(o.unproject(o.getPixelOrigin()),t).round(),n.zoom=t,this._setZoomTransform(n,o.getCenter(),o.getZoom()),u(n.el.offsetWidth),this._onCreateLevel(n)),this._level=n}},_onUpdateLevel:u,_onRemoveLevel:u,_onCreateLevel:u,_pruneTiles:function(){if(this._map){var t,e,i,n=this._map.getZoom();if(n>this.options.maxZoom||n<this.options.minZoom)this._removeAllTiles();else{for(t in this._tiles)(i=this._tiles[t]).retain=i.current;for(t in this._tiles)(i=this._tiles[t]).current&&!i.active&&(e=i.coords,this._retainParent(e.x,e.y,e.z,e.z-5)||this._retainChildren(e.x,e.y,e.z,e.z+2));for(t in this._tiles)this._tiles[t].retain||this._removeTile(t)}}},_removeTilesAtZoom:function(t){for(var e in this._tiles)this._tiles[e].coords.z===t&&this._removeTile(e)},_removeAllTiles:function(){for(var t in this._tiles)this._removeTile(t)},_invalidateAll:function(){for(var t in this._levels)T(this._levels[t].el),this._onRemoveLevel(Number(t)),delete this._levels[t];this._removeAllTiles(),this._tileZoom=void 0},_retainParent:function(t,e,i,n){var t=Math.floor(t/2),e=Math.floor(e/2),i=i-1,o=new p(+t,+e),o=(o.z=i,this._tileCoordsToKey(o)),o=this._tiles[o];return o&&o.active?o.retain=!0:(o&&o.loaded&&(o.retain=!0),n<i&&this._retainParent(t,e,i,n))},_retainChildren:function(t,e,i,n){for(var o=2*t;o<2*t+2;o++)for(var s=2*e;s<2*e+2;s++){var r=new p(o,s),r=(r.z=i+1,this._tileCoordsToKey(r)),r=this._tiles[r];r&&r.active?r.retain=!0:(r&&r.loaded&&(r.retain=!0),i+1<n&&this._retainChildren(o,s,i+1,n))}},_resetView:function(t){t=t&&(t.pinch||t.flyTo);this._setView(this._map.getCenter(),this._map.getZoom(),t,t)},_animateZoom:function(t){this._setView(t.center,t.zoom,!0,t.noUpdate)},_clampZoom:function(t){var e=this.options;return void 0!==e.minNativeZoom&&t<e.minNativeZoom?e.minNativeZoom:void 0!==e.maxNativeZoom&&e.maxNativeZoom<t?e.maxNativeZoom:t},_setView:function(t,e,i,n){var o=Math.round(e),o=void 0!==this.options.maxZoom&&o>this.options.maxZoom||void 0!==this.options.minZoom&&o<this.options.minZoom?void 0:this._clampZoom(o),s=this.options.updateWhenZooming&&o!==this._tileZoom;n&&!s||(this._tileZoom=o,this._abortLoading&&this._abortLoading(),this._updateLevels(),this._resetGrid(),void 0!==o&&this._update(t),i||this._pruneTiles(),this._noPrune=!!i),this._setZoomTransforms(t,e)},_setZoomTransforms:function(t,e){for(var i in this._levels)this._setZoomTransform(this._levels[i],t,e)},_setZoomTransform:function(t,e,i){var n=this._map.getZoomScale(i,t.zoom),e=t.origin.multiplyBy(n).subtract(this._map._getNewPixelOrigin(e,i)).round();b.any3d?be(t.el,e,n):Z(t.el,e)},_resetGrid:function(){var t=this._map,e=t.options.crs,i=this._tileSize=this.getTileSize(),n=this._tileZoom,o=this._map.getPixelWorldBounds(this._tileZoom);o&&(this._globalTileRange=this._pxBoundsToTileRange(o)),this._wrapX=e.wrapLng&&!this.options.noWrap&&[Math.floor(t.project([0,e.wrapLng[0]],n).x/i.x),Math.ceil(t.project([0,e.wrapLng[1]],n).x/i.y)],this._wrapY=e.wrapLat&&!this.options.noWrap&&[Math.floor(t.project([e.wrapLat[0],0],n).y/i.x),Math.ceil(t.project([e.wrapLat[1],0],n).y/i.y)]},_onMoveEnd:function(){this._map&&!this._map._animatingZoom&&this._update()},_getTiledPixelBounds:function(t){var e=this._map,i=e._animatingZoom?Math.max(e._animateToZoom,e.getZoom()):e.getZoom(),i=e.getZoomScale(i,this._tileZoom),t=e.project(t,this._tileZoom).floor(),e=e.getSize().divideBy(2*i);return new f(t.subtract(e),t.add(e))},_update:function(t){var e=this._map;if(e){var i=this._clampZoom(e.getZoom());if(void 0===t&&(t=e.getCenter()),void 0!==this._tileZoom){var n,e=this._getTiledPixelBounds(t),o=this._pxBoundsToTileRange(e),s=o.getCenter(),r=[],e=this.options.keepBuffer,a=new f(o.getBottomLeft().subtract([e,-e]),o.getTopRight().add([e,-e]));if(!(isFinite(o.min.x)&&isFinite(o.min.y)&&isFinite(o.max.x)&&isFinite(o.max.y)))throw new Error("Attempted to load an infinite number of tiles");for(n in this._tiles){var h=this._tiles[n].coords;h.z===this._tileZoom&&a.contains(new p(h.x,h.y))||(this._tiles[n].current=!1)}if(1<Math.abs(i-this._tileZoom))this._setView(t,i);else{for(var l=o.min.y;l<=o.max.y;l++)for(var u=o.min.x;u<=o.max.x;u++){var c,d=new p(u,l);d.z=this._tileZoom,this._isValidTile(d)&&((c=this._tiles[this._tileCoordsToKey(d)])?c.current=!0:r.push(d))}if(r.sort(function(t,e){return t.distanceTo(s)-e.distanceTo(s)}),0!==r.length){this._loading||(this._loading=!0,this.fire("loading"));for(var _=document.createDocumentFragment(),u=0;u<r.length;u++)this._addTile(r[u],_);this._level.el.appendChild(_)}}}}},_isValidTile:function(t){var e=this._map.options.crs;if(!e.infinite){var i=this._globalTileRange;if(!e.wrapLng&&(t.x<i.min.x||t.x>i.max.x)||!e.wrapLat&&(t.y<i.min.y||t.y>i.max.y))return!1}return!this.options.bounds||(e=this._tileCoordsToBounds(t),g(this.options.bounds).overlaps(e))},_keyToBounds:function(t){return this._tileCoordsToBounds(this._keyToTileCoords(t))},_tileCoordsToNwSe:function(t){var e=this._map,i=this.getTileSize(),n=t.scaleBy(i),i=n.add(i);return[e.unproject(n,t.z),e.unproject(i,t.z)]},_tileCoordsToBounds:function(t){t=this._tileCoordsToNwSe(t),t=new s(t[0],t[1]);return t=this.options.noWrap?t:this._map.wrapLatLngBounds(t)},_tileCoordsToKey:function(t){return t.x+":"+t.y+":"+t.z},_keyToTileCoords:function(t){var t=t.split(":"),e=new p(+t[0],+t[1]);return e.z=+t[2],e},_removeTile:function(t){var e=this._tiles[t];e&&(T(e.el),delete this._tiles[t],this.fire("tileunload",{tile:e.el,coords:this._keyToTileCoords(t)}))},_initTile:function(t){M(t,"leaflet-tile");var e=this.getTileSize();t.style.width=e.x+"px",t.style.height=e.y+"px",t.onselectstart=u,t.onmousemove=u,b.ielt9&&this.options.opacity<1&&C(t,this.options.opacity)},_addTile:function(t,e){var i=this._getTilePos(t),n=this._tileCoordsToKey(t),o=this.createTile(this._wrapCoords(t),a(this._tileReady,this,t));this._initTile(o),this.createTile.length<2&&x(a(this._tileReady,this,t,null,o)),Z(o,i),this._tiles[n]={el:o,coords:t,current:!0},e.appendChild(o),this.fire("tileloadstart",{tile:o,coords:t})},_tileReady:function(t,e,i){e&&this.fire("tileerror",{error:e,tile:i,coords:t});var n=this._tileCoordsToKey(t);(i=this._tiles[n])&&(i.loaded=+new Date,this._map._fadeAnimated?(C(i.el,0),r(this._fadeFrame),this._fadeFrame=x(this._updateOpacity,this)):(i.active=!0,this._pruneTiles()),e||(M(i.el,"leaflet-tile-loaded"),this.fire("tileload",{tile:i.el,coords:t})),this._noTilesToLoad()&&(this._loading=!1,this.fire("load"),b.ielt9||!this._map._fadeAnimated?x(this._pruneTiles,this):setTimeout(a(this._pruneTiles,this),250)))},_getTilePos:function(t){return t.scaleBy(this.getTileSize()).subtract(this._level.origin)},_wrapCoords:function(t){var e=new p(this._wrapX?H(t.x,this._wrapX):t.x,this._wrapY?H(t.y,this._wrapY):t.y);return e.z=t.z,e},_pxBoundsToTileRange:function(t){var e=this.getTileSize();return new f(t.min.unscaleBy(e).floor(),t.max.unscaleBy(e).ceil().subtract([1,1]))},_noTilesToLoad:function(){for(var t in this._tiles)if(!this._tiles[t].loaded)return!1;return!0}});var Di=Ni.extend({options:{minZoom:0,maxZoom:18,subdomains:"abc",errorTileUrl:"",zoomOffset:0,tms:!1,zoomReverse:!1,detectRetina:!1,crossOrigin:!1,referrerPolicy:!1},initialize:function(t,e){this._url=t,(e=c(this,e)).detectRetina&&b.retina&&0<e.maxZoom?(e.tileSize=Math.floor(e.tileSize/2),e.zoomReverse?(e.zoomOffset--,e.minZoom=Math.min(e.maxZoom,e.minZoom+1)):(e.zoomOffset++,e.maxZoom=Math.max(e.minZoom,e.maxZoom-1)),e.minZoom=Math.max(0,e.minZoom)):e.zoomReverse?e.minZoom=Math.min(e.maxZoom,e.minZoom):e.maxZoom=Math.max(e.minZoom,e.maxZoom),"string"==typeof e.subdomains&&(e.subdomains=e.subdomains.split("")),this.on("tileunload",this._onTileRemove)},setUrl:function(t,e){return this._url===t&&void 0===e&&(e=!0),this._url=t,e||this.redraw(),this},createTile:function(t,e){var i=document.createElement("img");return S(i,"load",a(this._tileOnLoad,this,e,i)),S(i,"error",a(this._tileOnError,this,e,i)),!this.options.crossOrigin&&""!==this.options.crossOrigin||(i.crossOrigin=!0===this.options.crossOrigin?"":this.options.crossOrigin),"string"==typeof this.options.referrerPolicy&&(i.referrerPolicy=this.options.referrerPolicy),i.alt="",i.src=this.getTileUrl(t),i},getTileUrl:function(t){var e={r:b.retina?"@2x":"",s:this._getSubdomain(t),x:t.x,y:t.y,z:this._getZoomForUrl()};return this._map&&!this._map.options.crs.infinite&&(t=this._globalTileRange.max.y-t.y,this.options.tms&&(e.y=t),e["-y"]=t),q(this._url,l(e,this.options))},_tileOnLoad:function(t,e){b.ielt9?setTimeout(a(t,this,null,e),0):t(null,e)},_tileOnError:function(t,e,i){var n=this.options.errorTileUrl;n&&e.getAttribute("src")!==n&&(e.src=n),t(i,e)},_onTileRemove:function(t){t.tile.onload=null},_getZoomForUrl:function(){var t=this._tileZoom,e=this.options.maxZoom;return(t=this.options.zoomReverse?e-t:t)+this.options.zoomOffset},_getSubdomain:function(t){t=Math.abs(t.x+t.y)%this.options.subdomains.length;return this.options.subdomains[t]},_abortLoading:function(){var t,e,i;for(t in this._tiles)this._tiles[t].coords.z!==this._tileZoom&&((i=this._tiles[t].el).onload=u,i.onerror=u,i.complete||(i.src=K,e=this._tiles[t].coords,T(i),delete this._tiles[t],this.fire("tileabort",{tile:i,coords:e})))},_removeTile:function(t){var e=this._tiles[t];if(e)return e.el.setAttribute("src",K),Ni.prototype._removeTile.call(this,t)},_tileReady:function(t,e,i){if(this._map&&(!i||i.getAttribute("src")!==K))return Ni.prototype._tileReady.call(this,t,e,i)}});function ji(t,e){return new Di(t,e)}var Hi=Di.extend({defaultWmsParams:{service:"WMS",request:"GetMap",layers:"",styles:"",format:"image/jpeg",transparent:!1,version:"1.1.1"},options:{crs:null,uppercase:!1},initialize:function(t,e){this._url=t;var i,n=l({},this.defaultWmsParams);for(i in e)i in this.options||(n[i]=e[i]);var t=(e=c(this,e)).detectRetina&&b.retina?2:1,o=this.getTileSize();n.width=o.x*t,n.height=o.y*t,this.wmsParams=n},onAdd:function(t){this._crs=this.options.crs||t.options.crs,this._wmsVersion=parseFloat(this.wmsParams.version);var e=1.3<=this._wmsVersion?"crs":"srs";this.wmsParams[e]=this._crs.code,Di.prototype.onAdd.call(this,t)},getTileUrl:function(t){var e=this._tileCoordsToNwSe(t),i=this._crs,i=_(i.project(e[0]),i.project(e[1])),e=i.min,i=i.max,e=(1.3<=this._wmsVersion&&this._crs===li?[e.y,e.x,i.y,i.x]:[e.x,e.y,i.x,i.y]).join(","),i=Di.prototype.getTileUrl.call(this,t);return i+U(this.wmsParams,i,this.options.uppercase)+(this.options.uppercase?"&BBOX=":"&bbox=")+e},setParams:function(t,e){return l(this.wmsParams,t),e||this.redraw(),this}});Di.WMS=Hi,ji.wms=function(t,e){return new Hi(t,e)};var Wi=o.extend({options:{padding:.1},initialize:function(t){c(this,t),h(this),this._layers=this._layers||{}},onAdd:function(){this._container||(this._initContainer(),M(this._container,"leaflet-zoom-animated")),this.getPane().appendChild(this._container),this._update(),this.on("update",this._updatePaths,this)},onRemove:function(){this.off("update",this._updatePaths,this),this._destroyContainer()},getEvents:function(){var t={viewreset:this._reset,zoom:this._onZoom,moveend:this._update,zoomend:this._onZoomEnd};return this._zoomAnimated&&(t.zoomanim=this._onAnimZoom),t},_onAnimZoom:function(t){this._updateTransform(t.center,t.zoom)},_onZoom:function(){this._updateTransform(this._map.getCenter(),this._map.getZoom())},_updateTransform:function(t,e){var i=this._map.getZoomScale(e,this._zoom),n=this._map.getSize().multiplyBy(.5+this.options.padding),o=this._map.project(this._center,e),n=n.multiplyBy(-i).add(o).subtract(this._map._getNewPixelOrigin(t,e));b.any3d?be(this._container,n,i):Z(this._container,n)},_reset:function(){for(var t in this._update(),this._updateTransform(this._center,this._zoom),this._layers)this._layers[t]._reset()},_onZoomEnd:function(){for(var t in this._layers)this._layers[t]._project()},_updatePaths:function(){for(var t in this._layers)this._layers[t]._update()},_update:function(){var t=this.options.padding,e=this._map.getSize(),i=this._map.containerPointToLayerPoint(e.multiplyBy(-t)).round();this._bounds=new f(i,i.add(e.multiplyBy(1+2*t)).round()),this._center=this._map.getCenter(),this._zoom=this._map.getZoom()}}),Fi=Wi.extend({options:{tolerance:0},getEvents:function(){var t=Wi.prototype.getEvents.call(this);return t.viewprereset=this._onViewPreReset,t},_onViewPreReset:function(){this._postponeUpdatePaths=!0},onAdd:function(){Wi.prototype.onAdd.call(this),this._draw()},_initContainer:function(){var t=this._container=document.createElement("canvas");S(t,"mousemove",this._onMouseMove,this),S(t,"click dblclick mousedown mouseup contextmenu",this._onClick,this),S(t,"mouseout",this._handleMouseOut,this),t._leaflet_disable_events=!0,this._ctx=t.getContext("2d")},_destroyContainer:function(){r(this._redrawRequest),delete this._ctx,T(this._container),k(this._container),delete this._container},_updatePaths:function(){if(!this._postponeUpdatePaths){for(var t in this._redrawBounds=null,this._layers)this._layers[t]._update();this._redraw()}},_update:function(){var t,e,i,n;this._map._animatingZoom&&this._bounds||(Wi.prototype._update.call(this),t=this._bounds,e=this._container,i=t.getSize(),n=b.retina?2:1,Z(e,t.min),e.width=n*i.x,e.height=n*i.y,e.style.width=i.x+"px",e.style.height=i.y+"px",b.retina&&this._ctx.scale(2,2),this._ctx.translate(-t.min.x,-t.min.y),this.fire("update"))},_reset:function(){Wi.prototype._reset.call(this),this._postponeUpdatePaths&&(this._postponeUpdatePaths=!1,this._updatePaths())},_initPath:function(t){this._updateDashArray(t);t=(this._layers[h(t)]=t)._order={layer:t,prev:this._drawLast,next:null};this._drawLast&&(this._drawLast.next=t),this._drawLast=t,this._drawFirst=this._drawFirst||this._drawLast},_addPath:function(t){this._requestRedraw(t)},_removePath:function(t){var e=t._order,i=e.next,e=e.prev;i?i.prev=e:this._drawLast=e,e?e.next=i:this._drawFirst=i,delete t._order,delete this._layers[h(t)],this._requestRedraw(t)},_updatePath:function(t){this._extendRedrawBounds(t),t._project(),t._update(),this._requestRedraw(t)},_updateStyle:function(t){this._updateDashArray(t),this._requestRedraw(t)},_updateDashArray:function(t){if("string"==typeof t.options.dashArray){for(var e,i=t.options.dashArray.split(/[, ]+/),n=[],o=0;o<i.length;o++){if(e=Number(i[o]),isNaN(e))return;n.push(e)}t.options._dashArray=n}else t.options._dashArray=t.options.dashArray},_requestRedraw:function(t){this._map&&(this._extendRedrawBounds(t),this._redrawRequest=this._redrawRequest||x(this._redraw,this))},_extendRedrawBounds:function(t){var e;t._pxBounds&&(e=(t.options.weight||0)+1,this._redrawBounds=this._redrawBounds||new f,this._redrawBounds.extend(t._pxBounds.min.subtract([e,e])),this._redrawBounds.extend(t._pxBounds.max.add([e,e])))},_redraw:function(){this._redrawRequest=null,this._redrawBounds&&(this._redrawBounds.min._floor(),this._redrawBounds.max._ceil()),this._clear(),this._draw(),this._redrawBounds=null},_clear:function(){var t,e=this._redrawBounds;e?(t=e.getSize(),this._ctx.clearRect(e.min.x,e.min.y,t.x,t.y)):(this._ctx.save(),this._ctx.setTransform(1,0,0,1,0,0),this._ctx.clearRect(0,0,this._container.width,this._container.height),this._ctx.restore())},_draw:function(){var t,e,i=this._redrawBounds;this._ctx.save(),i&&(e=i.getSize(),this._ctx.beginPath(),this._ctx.rect(i.min.x,i.min.y,e.x,e.y),this._ctx.clip()),this._drawing=!0;for(var n=this._drawFirst;n;n=n.next)t=n.layer,(!i||t._pxBounds&&t._pxBounds.intersects(i))&&t._updatePath();this._drawing=!1,this._ctx.restore()},_updatePoly:function(t,e){if(this._drawing){var i,n,o,s,r=t._parts,a=r.length,h=this._ctx;if(a){for(h.beginPath(),i=0;i<a;i++){for(n=0,o=r[i].length;n<o;n++)s=r[i][n],h[n?"lineTo":"moveTo"](s.x,s.y);e&&h.closePath()}this._fillStroke(h,t)}}},_updateCircle:function(t){var e,i,n,o;this._drawing&&!t._empty()&&(e=t._point,i=this._ctx,n=Math.max(Math.round(t._radius),1),1!=(o=(Math.max(Math.round(t._radiusY),1)||n)/n)&&(i.save(),i.scale(1,o)),i.beginPath(),i.arc(e.x,e.y/o,n,0,2*Math.PI,!1),1!=o&&i.restore(),this._fillStroke(i,t))},_fillStroke:function(t,e){var i=e.options;i.fill&&(t.globalAlpha=i.fillOpacity,t.fillStyle=i.fillColor||i.color,t.fill(i.fillRule||"evenodd")),i.stroke&&0!==i.weight&&(t.setLineDash&&t.setLineDash(e.options&&e.options._dashArray||[]),t.globalAlpha=i.opacity,t.lineWidth=i.weight,t.strokeStyle=i.color,t.lineCap=i.lineCap,t.lineJoin=i.lineJoin,t.stroke())},_onClick:function(t){for(var e,i,n=this._map.mouseEventToLayerPoint(t),o=this._drawFirst;o;o=o.next)(e=o.layer).options.interactive&&e._containsPoint(n)&&(("click"===t.type||"preclick"===t.type)&&this._map._draggableMoved(e)||(i=e));this._fireEvent(!!i&&[i],t)},_onMouseMove:function(t){var e;!this._map||this._map.dragging.moving()||this._map._animatingZoom||(e=this._map.mouseEventToLayerPoint(t),this._handleMouseHover(t,e))},_handleMouseOut:function(t){var e=this._hoveredLayer;e&&(z(this._container,"leaflet-interactive"),this._fireEvent([e],t,"mouseout"),this._hoveredLayer=null,this._mouseHoverThrottled=!1)},_handleMouseHover:function(t,e){if(!this._mouseHoverThrottled){for(var i,n,o=this._drawFirst;o;o=o.next)(i=o.layer).options.interactive&&i._containsPoint(e)&&(n=i);n!==this._hoveredLayer&&(this._handleMouseOut(t),n&&(M(this._container,"leaflet-interactive"),this._fireEvent([n],t,"mouseover"),this._hoveredLayer=n)),this._fireEvent(!!this._hoveredLayer&&[this._hoveredLayer],t),this._mouseHoverThrottled=!0,setTimeout(a(function(){this._mouseHoverThrottled=!1},this),32)}},_fireEvent:function(t,e,i){this._map._fireDOMEvent(e,i||e.type,t)},_bringToFront:function(t){var e,i,n=t._order;n&&(e=n.next,i=n.prev,e&&((e.prev=i)?i.next=e:e&&(this._drawFirst=e),n.prev=this._drawLast,(this._drawLast.next=n).next=null,this._drawLast=n,this._requestRedraw(t)))},_bringToBack:function(t){var e,i,n=t._order;n&&(e=n.next,(i=n.prev)&&((i.next=e)?e.prev=i:i&&(this._drawLast=i),n.prev=null,n.next=this._drawFirst,this._drawFirst.prev=n,this._drawFirst=n,this._requestRedraw(t)))}});function Ui(t){return b.canvas?new Fi(t):null}var Vi=function(){try{return document.namespaces.add("lvml","urn:schemas-microsoft-com:vml"),function(t){return document.createElement("<lvml:"+t+' class="lvml">')}}catch(t){}return function(t){return document.createElement("<"+t+' xmlns="urn:schemas-microsoft.com:vml" class="lvml">')}}(),zt={_initContainer:function(){this._container=P("div","leaflet-vml-container")},_update:function(){this._map._animatingZoom||(Wi.prototype._update.call(this),this.fire("update"))},_initPath:function(t){var e=t._container=Vi("shape");M(e,"leaflet-vml-shape "+(this.options.className||"")),e.coordsize="1 1",t._path=Vi("path"),e.appendChild(t._path),this._updateStyle(t),this._layers[h(t)]=t},_addPath:function(t){var e=t._container;this._container.appendChild(e),t.options.interactive&&t.addInteractiveTarget(e)},_removePath:function(t){var e=t._container;T(e),t.removeInteractiveTarget(e),delete this._layers[h(t)]},_updateStyle:function(t){var e=t._stroke,i=t._fill,n=t.options,o=t._container;o.stroked=!!n.stroke,o.filled=!!n.fill,n.stroke?(e=e||(t._stroke=Vi("stroke")),o.appendChild(e),e.weight=n.weight+"px",e.color=n.color,e.opacity=n.opacity,n.dashArray?e.dashStyle=d(n.dashArray)?n.dashArray.join(" "):n.dashArray.replace(/( *, *)/g," "):e.dashStyle="",e.endcap=n.lineCap.replace("butt","flat"),e.joinstyle=n.lineJoin):e&&(o.removeChild(e),t._stroke=null),n.fill?(i=i||(t._fill=Vi("fill")),o.appendChild(i),i.color=n.fillColor||n.color,i.opacity=n.fillOpacity):i&&(o.removeChild(i),t._fill=null)},_updateCircle:function(t){var e=t._point.round(),i=Math.round(t._radius),n=Math.round(t._radiusY||i);this._setPath(t,t._empty()?"M0 0":"AL "+e.x+","+e.y+" "+i+","+n+" 0,23592600")},_setPath:function(t,e){t._path.v=e},_bringToFront:function(t){fe(t._container)},_bringToBack:function(t){ge(t._container)}},qi=b.vml?Vi:ct,Gi=Wi.extend({_initContainer:function(){this._container=qi("svg"),this._container.setAttribute("pointer-events","none"),this._rootGroup=qi("g"),this._container.appendChild(this._rootGroup)},_destroyContainer:function(){T(this._container),k(this._container),delete this._container,delete this._rootGroup,delete this._svgSize},_update:function(){var t,e,i;this._map._animatingZoom&&this._bounds||(Wi.prototype._update.call(this),e=(t=this._bounds).getSize(),i=this._container,this._svgSize&&this._svgSize.equals(e)||(this._svgSize=e,i.setAttribute("width",e.x),i.setAttribute("height",e.y)),Z(i,t.min),i.setAttribute("viewBox",[t.min.x,t.min.y,e.x,e.y].join(" ")),this.fire("update"))},_initPath:function(t){var e=t._path=qi("path");t.options.className&&M(e,t.options.className),t.options.interactive&&M(e,"leaflet-interactive"),this._updateStyle(t),this._layers[h(t)]=t},_addPath:function(t){this._rootGroup||this._initContainer(),this._rootGroup.appendChild(t._path),t.addInteractiveTarget(t._path)},_removePath:function(t){T(t._path),t.removeInteractiveTarget(t._path),delete this._layers[h(t)]},_updatePath:function(t){t._project(),t._update()},_updateStyle:function(t){var e=t._path,t=t.options;e&&(t.stroke?(e.setAttribute("stroke",t.color),e.setAttribute("stroke-opacity",t.opacity),e.setAttribute("stroke-width",t.weight),e.setAttribute("stroke-linecap",t.lineCap),e.setAttribute("stroke-linejoin",t.lineJoin),t.dashArray?e.setAttribute("stroke-dasharray",t.dashArray):e.removeAttribute("stroke-dasharray"),t.dashOffset?e.setAttribute("stroke-dashoffset",t.dashOffset):e.removeAttribute("stroke-dashoffset")):e.setAttribute("stroke","none"),t.fill?(e.setAttribute("fill",t.fillColor||t.color),e.setAttribute("fill-opacity",t.fillOpacity),e.setAttribute("fill-rule",t.fillRule||"evenodd")):e.setAttribute("fill","none"))},_updatePoly:function(t,e){this._setPath(t,dt(t._parts,e))},_updateCircle:function(t){var e=t._point,i=Math.max(Math.round(t._radius),1),n="a"+i+","+(Math.max(Math.round(t._radiusY),1)||i)+" 0 1,0 ",e=t._empty()?"M0 0":"M"+(e.x-i)+","+e.y+n+2*i+",0 "+n+2*-i+",0 ";this._setPath(t,e)},_setPath:function(t,e){t._path.setAttribute("d",e)},_bringToFront:function(t){fe(t._path)},_bringToBack:function(t){ge(t._path)}});function Ki(t){return b.svg||b.vml?new Gi(t):null}b.vml&&Gi.include(zt),A.include({getRenderer:function(t){t=(t=t.options.renderer||this._getPaneRenderer(t.options.pane)||this.options.renderer||this._renderer)||(this._renderer=this._createRenderer());return this.hasLayer(t)||this.addLayer(t),t},_getPaneRenderer:function(t){var e;return"overlayPane"!==t&&void 0!==t&&(void 0===(e=this._paneRenderers[t])&&(e=this._createRenderer({pane:t}),this._paneRenderers[t]=e),e)},_createRenderer:function(t){return this.options.preferCanvas&&Ui(t)||Ki(t)}});var Yi=xi.extend({initialize:function(t,e){xi.prototype.initialize.call(this,this._boundsToLatLngs(t),e)},setBounds:function(t){return this.setLatLngs(this._boundsToLatLngs(t))},_boundsToLatLngs:function(t){return[(t=g(t)).getSouthWest(),t.getNorthWest(),t.getNorthEast(),t.getSouthEast()]}});Gi.create=qi,Gi.pointsToPath=dt,wi.geometryToLayer=bi,wi.coordsToLatLng=Li,wi.coordsToLatLngs=Ti,wi.latLngToCoords=Mi,wi.latLngsToCoords=zi,wi.getFeature=Ci,wi.asFeature=Zi,A.mergeOptions({boxZoom:!0});var _t=n.extend({initialize:function(t){this._map=t,this._container=t._container,this._pane=t._panes.overlayPane,this._resetStateTimeout=0,t.on("unload",this._destroy,this)},addHooks:function(){S(this._container,"mousedown",this._onMouseDown,this)},removeHooks:function(){k(this._container,"mousedown",this._onMouseDown,this)},moved:function(){return this._moved},_destroy:function(){T(this._pane),delete this._pane},_resetState:function(){this._resetStateTimeout=0,this._moved=!1},_clearDeferredResetState:function(){0!==this._resetStateTimeout&&(clearTimeout(this._resetStateTimeout),this._resetStateTimeout=0)},_onMouseDown:function(t){if(!t.shiftKey||1!==t.which&&1!==t.button)return!1;this._clearDeferredResetState(),this._resetState(),re(),Le(),this._startPoint=this._map.mouseEventToContainerPoint(t),S(document,{contextmenu:Re,mousemove:this._onMouseMove,mouseup:this._onMouseUp,keydown:this._onKeyDown},this)},_onMouseMove:function(t){this._moved||(this._moved=!0,this._box=P("div","leaflet-zoom-box",this._container),M(this._container,"leaflet-crosshair"),this._map.fire("boxzoomstart")),this._point=this._map.mouseEventToContainerPoint(t);var t=new f(this._point,this._startPoint),e=t.getSize();Z(this._box,t.min),this._box.style.width=e.x+"px",this._box.style.height=e.y+"px"},_finish:function(){this._moved&&(T(this._box),z(this._container,"leaflet-crosshair")),ae(),Te(),k(document,{contextmenu:Re,mousemove:this._onMouseMove,mouseup:this._onMouseUp,keydown:this._onKeyDown},this)},_onMouseUp:function(t){1!==t.which&&1!==t.button||(this._finish(),this._moved&&(this._clearDeferredResetState(),this._resetStateTimeout=setTimeout(a(this._resetState,this),0),t=new s(this._map.containerPointToLatLng(this._startPoint),this._map.containerPointToLatLng(this._point)),this._map.fitBounds(t).fire("boxzoomend",{boxZoomBounds:t})))},_onKeyDown:function(t){27===t.keyCode&&(this._finish(),this._clearDeferredResetState(),this._resetState())}}),Ct=(A.addInitHook("addHandler","boxZoom",_t),A.mergeOptions({doubleClickZoom:!0}),n.extend({addHooks:function(){this._map.on("dblclick",this._onDoubleClick,this)},removeHooks:function(){this._map.off("dblclick",this._onDoubleClick,this)},_onDoubleClick:function(t){var e=this._map,i=e.getZoom(),n=e.options.zoomDelta,i=t.originalEvent.shiftKey?i-n:i+n;"center"===e.options.doubleClickZoom?e.setZoom(i):e.setZoomAround(t.containerPoint,i)}})),Zt=(A.addInitHook("addHandler","doubleClickZoom",Ct),A.mergeOptions({dragging:!0,inertia:!0,inertiaDeceleration:3400,inertiaMaxSpeed:1/0,easeLinearity:.2,worldCopyJump:!1,maxBoundsViscosity:0}),n.extend({addHooks:function(){var t;this._draggable||(t=this._map,this._draggable=new Xe(t._mapPane,t._container),this._draggable.on({dragstart:this._onDragStart,drag:this._onDrag,dragend:this._onDragEnd},this),this._draggable.on("predrag",this._onPreDragLimit,this),t.options.worldCopyJump&&(this._draggable.on("predrag",this._onPreDragWrap,this),t.on("zoomend",this._onZoomEnd,this),t.whenReady(this._onZoomEnd,this))),M(this._map._container,"leaflet-grab leaflet-touch-drag"),this._draggable.enable(),this._positions=[],this._times=[]},removeHooks:function(){z(this._map._container,"leaflet-grab"),z(this._map._container,"leaflet-touch-drag"),this._draggable.disable()},moved:function(){return this._draggable&&this._draggable._moved},moving:function(){return this._draggable&&this._draggable._moving},_onDragStart:function(){var t,e=this._map;e._stop(),this._map.options.maxBounds&&this._map.options.maxBoundsViscosity?(t=g(this._map.options.maxBounds),this._offsetLimit=_(this._map.latLngToContainerPoint(t.getNorthWest()).multiplyBy(-1),this._map.latLngToContainerPoint(t.getSouthEast()).multiplyBy(-1).add(this._map.getSize())),this._viscosity=Math.min(1,Math.max(0,this._map.options.maxBoundsViscosity))):this._offsetLimit=null,e.fire("movestart").fire("dragstart"),e.options.inertia&&(this._positions=[],this._times=[])},_onDrag:function(t){var e,i;this._map.options.inertia&&(e=this._lastTime=+new Date,i=this._lastPos=this._draggable._absPos||this._draggable._newPos,this._positions.push(i),this._times.push(e),this._prunePositions(e)),this._map.fire("move",t).fire("drag",t)},_prunePositions:function(t){for(;1<this._positions.length&&50<t-this._times[0];)this._positions.shift(),this._times.shift()},_onZoomEnd:function(){var t=this._map.getSize().divideBy(2),e=this._map.latLngToLayerPoint([0,0]);this._initialWorldOffset=e.subtract(t).x,this._worldWidth=this._map.getPixelWorldBounds().getSize().x},_viscousLimit:function(t,e){return t-(t-e)*this._viscosity},_onPreDragLimit:function(){var t,e;this._viscosity&&this._offsetLimit&&(t=this._draggable._newPos.subtract(this._draggable._startPos),e=this._offsetLimit,t.x<e.min.x&&(t.x=this._viscousLimit(t.x,e.min.x)),t.y<e.min.y&&(t.y=this._viscousLimit(t.y,e.min.y)),t.x>e.max.x&&(t.x=this._viscousLimit(t.x,e.max.x)),t.y>e.max.y&&(t.y=this._viscousLimit(t.y,e.max.y)),this._draggable._newPos=this._draggable._startPos.add(t))},_onPreDragWrap:function(){var t=this._worldWidth,e=Math.round(t/2),i=this._initialWorldOffset,n=this._draggable._newPos.x,o=(n-e+i)%t+e-i,n=(n+e+i)%t-e-i,t=Math.abs(o+i)<Math.abs(n+i)?o:n;this._draggable._absPos=this._draggable._newPos.clone(),this._draggable._newPos.x=t},_onDragEnd:function(t){var e,i,n,o,s=this._map,r=s.options,a=!r.inertia||t.noInertia||this._times.length<2;s.fire("dragend",t),!a&&(this._prunePositions(+new Date),t=this._lastPos.subtract(this._positions[0]),a=(this._lastTime-this._times[0])/1e3,e=r.easeLinearity,a=(t=t.multiplyBy(e/a)).distanceTo([0,0]),i=Math.min(r.inertiaMaxSpeed,a),t=t.multiplyBy(i/a),n=i/(r.inertiaDeceleration*e),(o=t.multiplyBy(-n/2).round()).x||o.y)?(o=s._limitOffset(o,s.options.maxBounds),x(function(){s.panBy(o,{duration:n,easeLinearity:e,noMoveStart:!0,animate:!0})})):s.fire("moveend")}})),St=(A.addInitHook("addHandler","dragging",Zt),A.mergeOptions({keyboard:!0,keyboardPanDelta:80}),n.extend({keyCodes:{left:[37],right:[39],down:[40],up:[38],zoomIn:[187,107,61,171],zoomOut:[189,109,54,173]},initialize:function(t){this._map=t,this._setPanDelta(t.options.keyboardPanDelta),this._setZoomDelta(t.options.zoomDelta)},addHooks:function(){var t=this._map._container;t.tabIndex<=0&&(t.tabIndex="0"),S(t,{focus:this._onFocus,blur:this._onBlur,mousedown:this._onMouseDown},this),this._map.on({focus:this._addHooks,blur:this._removeHooks},this)},removeHooks:function(){this._removeHooks(),k(this._map._container,{focus:this._onFocus,blur:this._onBlur,mousedown:this._onMouseDown},this),this._map.off({focus:this._addHooks,blur:this._removeHooks},this)},_onMouseDown:function(){var t,e,i;this._focused||(i=document.body,t=document.documentElement,e=i.scrollTop||t.scrollTop,i=i.scrollLeft||t.scrollLeft,this._map._container.focus(),window.scrollTo(i,e))},_onFocus:function(){this._focused=!0,this._map.fire("focus")},_onBlur:function(){this._focused=!1,this._map.fire("blur")},_setPanDelta:function(t){for(var e=this._panKeys={},i=this.keyCodes,n=0,o=i.left.length;n<o;n++)e[i.left[n]]=[-1*t,0];for(n=0,o=i.right.length;n<o;n++)e[i.right[n]]=[t,0];for(n=0,o=i.down.length;n<o;n++)e[i.down[n]]=[0,t];for(n=0,o=i.up.length;n<o;n++)e[i.up[n]]=[0,-1*t]},_setZoomDelta:function(t){for(var e=this._zoomKeys={},i=this.keyCodes,n=0,o=i.zoomIn.length;n<o;n++)e[i.zoomIn[n]]=t;for(n=0,o=i.zoomOut.length;n<o;n++)e[i.zoomOut[n]]=-t},_addHooks:function(){S(document,"keydown",this._onKeyDown,this)},_removeHooks:function(){k(document,"keydown",this._onKeyDown,this)},_onKeyDown:function(t){if(!(t.altKey||t.ctrlKey||t.metaKey)){var e,i,n=t.keyCode,o=this._map;if(n in this._panKeys)o._panAnim&&o._panAnim._inProgress||(i=this._panKeys[n],t.shiftKey&&(i=m(i).multiplyBy(3)),o.options.maxBounds&&(i=o._limitOffset(m(i),o.options.maxBounds)),o.options.worldCopyJump?(e=o.wrapLatLng(o.unproject(o.project(o.getCenter()).add(i))),o.panTo(e)):o.panBy(i));else if(n in this._zoomKeys)o.setZoom(o.getZoom()+(t.shiftKey?3:1)*this._zoomKeys[n]);else{if(27!==n||!o._popup||!o._popup.options.closeOnEscapeKey)return;o.closePopup()}Re(t)}}})),Et=(A.addInitHook("addHandler","keyboard",St),A.mergeOptions({scrollWheelZoom:!0,wheelDebounceTime:40,wheelPxPerZoomLevel:60}),n.extend({addHooks:function(){S(this._map._container,"wheel",this._onWheelScroll,this),this._delta=0},removeHooks:function(){k(this._map._container,"wheel",this._onWheelScroll,this)},_onWheelScroll:function(t){var e=He(t),i=this._map.options.wheelDebounceTime,e=(this._delta+=e,this._lastMousePos=this._map.mouseEventToContainerPoint(t),this._startTime||(this._startTime=+new Date),Math.max(i-(+new Date-this._startTime),0));clearTimeout(this._timer),this._timer=setTimeout(a(this._performZoom,this),e),Re(t)},_performZoom:function(){var t=this._map,e=t.getZoom(),i=this._map.options.zoomSnap||0,n=(t._stop(),this._delta/(4*this._map.options.wheelPxPerZoomLevel)),n=4*Math.log(2/(1+Math.exp(-Math.abs(n))))/Math.LN2,i=i?Math.ceil(n/i)*i:n,n=t._limitZoom(e+(0<this._delta?i:-i))-e;this._delta=0,this._startTime=null,n&&("center"===t.options.scrollWheelZoom?t.setZoom(e+n):t.setZoomAround(this._lastMousePos,e+n))}})),kt=(A.addInitHook("addHandler","scrollWheelZoom",Et),A.mergeOptions({tapHold:b.touchNative&&b.safari&&b.mobile,tapTolerance:15}),n.extend({addHooks:function(){S(this._map._container,"touchstart",this._onDown,this)},removeHooks:function(){k(this._map._container,"touchstart",this._onDown,this)},_onDown:function(t){var e;clearTimeout(this._holdTimeout),1===t.touches.length&&(e=t.touches[0],this._startPos=this._newPos=new p(e.clientX,e.clientY),this._holdTimeout=setTimeout(a(function(){this._cancel(),this._isTapValid()&&(S(document,"touchend",O),S(document,"touchend touchcancel",this._cancelClickPrevent),this._simulateEvent("contextmenu",e))},this),600),S(document,"touchend touchcancel contextmenu",this._cancel,this),S(document,"touchmove",this._onMove,this))},_cancelClickPrevent:function t(){k(document,"touchend",O),k(document,"touchend touchcancel",t)},_cancel:function(){clearTimeout(this._holdTimeout),k(document,"touchend touchcancel contextmenu",this._cancel,this),k(document,"touchmove",this._onMove,this)},_onMove:function(t){t=t.touches[0];this._newPos=new p(t.clientX,t.clientY)},_isTapValid:function(){return this._newPos.distanceTo(this._startPos)<=this._map.options.tapTolerance},_simulateEvent:function(t,e){t=new MouseEvent(t,{bubbles:!0,cancelable:!0,view:window,screenX:e.screenX,screenY:e.screenY,clientX:e.clientX,clientY:e.clientY});t._simulated=!0,e.target.dispatchEvent(t)}})),Ot=(A.addInitHook("addHandler","tapHold",kt),A.mergeOptions({touchZoom:b.touch,bounceAtZoomLimits:!0}),n.extend({addHooks:function(){M(this._map._container,"leaflet-touch-zoom"),S(this._map._container,"touchstart",this._onTouchStart,this)},removeHooks:function(){z(this._map._container,"leaflet-touch-zoom"),k(this._map._container,"touchstart",this._onTouchStart,this)},_onTouchStart:function(t){var e,i,n=this._map;!t.touches||2!==t.touches.length||n._animatingZoom||this._zooming||(e=n.mouseEventToContainerPoint(t.touches[0]),i=n.mouseEventToContainerPoint(t.touches[1]),this._centerPoint=n.getSize()._divideBy(2),this._startLatLng=n.containerPointToLatLng(this._centerPoint),"center"!==n.options.touchZoom&&(this._pinchStartLatLng=n.containerPointToLatLng(e.add(i)._divideBy(2))),this._startDist=e.distanceTo(i),this._startZoom=n.getZoom(),this._moved=!1,this._zooming=!0,n._stop(),S(document,"touchmove",this._onTouchMove,this),S(document,"touchend touchcancel",this._onTouchEnd,this),O(t))},_onTouchMove:function(t){if(t.touches&&2===t.touches.length&&this._zooming){var e=this._map,i=e.mouseEventToContainerPoint(t.touches[0]),n=e.mouseEventToContainerPoint(t.touches[1]),o=i.distanceTo(n)/this._startDist;if(this._zoom=e.getScaleZoom(o,this._startZoom),!e.options.bounceAtZoomLimits&&(this._zoom<e.getMinZoom()&&o<1||this._zoom>e.getMaxZoom()&&1<o)&&(this._zoom=e._limitZoom(this._zoom)),"center"===e.options.touchZoom){if(this._center=this._startLatLng,1==o)return}else{i=i._add(n)._divideBy(2)._subtract(this._centerPoint);if(1==o&&0===i.x&&0===i.y)return;this._center=e.unproject(e.project(this._pinchStartLatLng,this._zoom).subtract(i),this._zoom)}this._moved||(e._moveStart(!0,!1),this._moved=!0),r(this._animRequest);n=a(e._move,e,this._center,this._zoom,{pinch:!0,round:!1},void 0);this._animRequest=x(n,this,!0),O(t)}},_onTouchEnd:function(){this._moved&&this._zooming?(this._zooming=!1,r(this._animRequest),k(document,"touchmove",this._onTouchMove,this),k(document,"touchend touchcancel",this._onTouchEnd,this),this._map.options.zoomAnimation?this._map._animateZoom(this._center,this._map._limitZoom(this._zoom),!0,this._map.options.zoomSnap):this._map._resetView(this._center,this._map._limitZoom(this._zoom))):this._zooming=!1}})),Xi=(A.addInitHook("addHandler","touchZoom",Ot),A.BoxZoom=_t,A.DoubleClickZoom=Ct,A.Drag=Zt,A.Keyboard=St,A.ScrollWheelZoom=Et,A.TapHold=kt,A.TouchZoom=Ot,t.Bounds=f,t.Browser=b,t.CRS=ot,t.Canvas=Fi,t.Circle=vi,t.CircleMarker=gi,t.Class=et,t.Control=B,t.DivIcon=Ri,t.DivOverlay=Ai,t.DomEvent=mt,t.DomUtil=pt,t.Draggable=Xe,t.Evented=it,t.FeatureGroup=ci,t.GeoJSON=wi,t.GridLayer=Ni,t.Handler=n,t.Icon=di,t.ImageOverlay=Ei,t.LatLng=v,t.LatLngBounds=s,t.Layer=o,t.LayerGroup=ui,t.LineUtil=vt,t.Map=A,t.Marker=mi,t.Mixin=ft,t.Path=fi,t.Point=p,t.PolyUtil=gt,t.Polygon=xi,t.Polyline=yi,t.Popup=Bi,t.PosAnimation=Fe,t.Projection=wt,t.Rectangle=Yi,t.Renderer=Wi,t.SVG=Gi,t.SVGOverlay=Oi,t.TileLayer=Di,t.Tooltip=Ii,t.Transformation=at,t.Util=tt,t.VideoOverlay=ki,t.bind=a,t.bounds=_,t.canvas=Ui,t.circle=function(t,e,i){return new vi(t,e,i)},t.circleMarker=function(t,e){return new gi(t,e)},t.control=Ue,t.divIcon=function(t){return new Ri(t)},t.extend=l,t.featureGroup=function(t,e){return new ci(t,e)},t.geoJSON=Si,t.geoJson=Mt,t.gridLayer=function(t){return new Ni(t)},t.icon=function(t){return new di(t)},t.imageOverlay=function(t,e,i){return new Ei(t,e,i)},t.latLng=w,t.latLngBounds=g,t.layerGroup=function(t,e){return new ui(t,e)},t.map=function(t,e){return new A(t,e)},t.marker=function(t,e){return new mi(t,e)},t.point=m,t.polygon=function(t,e){return new xi(t,e)},t.polyline=function(t,e){return new yi(t,e)},t.popup=function(t,e){return new Bi(t,e)},t.rectangle=function(t,e){return new Yi(t,e)},t.setOptions=c,t.stamp=h,t.svg=Ki,t.svgOverlay=function(t,e,i){return new Oi(t,e,i)},t.tileLayer=ji,t.tooltip=function(t,e){return new Ii(t,e)},t.transformation=ht,t.version="1.9.4",t.videoOverlay=function(t,e,i){return new ki(t,e,i)},window.L);t.noConflict=function(){return window.L=Xi,this},window.L=t});
+//# sourceMappingURL=leaflet.js.map
\ No newline at end of file
diff --git a/web/vendor/maplibre/maplibre-gl.css b/web/vendor/maplibre/maplibre-gl.css
new file mode 100644
index 0000000..6ceb5de
--- /dev/null
+++ b/web/vendor/maplibre/maplibre-gl.css
@@ -0,0 +1 @@
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diff --git a/web/vendor/maplibre/maplibre-gl.js b/web/vendor/maplibre/maplibre-gl.js
new file mode 100644
index 0000000..2caee97
--- /dev/null
+++ b/web/vendor/maplibre/maplibre-gl.js
@@ -0,0 +1,59 @@
+/**
+ * MapLibre GL JS
+ * @license 3-Clause BSD. Full text of license: https://github.com/maplibre/maplibre-gl-js/blob/v4.7.1/LICENSE.txt
+ */
+(function (global, factory) {
+typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+typeof define === 'function' && define.amd ? define(factory) :
+(global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.maplibregl = factory());
+})(this, (function () { 'use strict';
+
+/* eslint-disable */
+
+var maplibregl = {};
+var modules = {};
+function define(moduleName, _dependencies, moduleFactory) {
+    modules[moduleName] = moduleFactory;
+
+    // to get the list of modules see generated dist/maplibre-gl-dev.js file (look for `define(` calls)
+    if (moduleName !== 'index') {
+        return;
+    }
+
+    // we assume that when an index module is initializing then other modules are loaded already
+    var workerBundleString = 'var sharedModule = {}; (' + modules.shared + ')(sharedModule); (' + modules.worker + ')(sharedModule);'
+
+    var sharedModule = {};
+    // the order of arguments of a module factory depends on rollup (it decides who is whose dependency)
+    // to check the correct order, see dist/maplibre-gl-dev.js file (look for `define(` calls)
+    // we assume that for our 3 chunks it will generate 3 modules and their order is predefined like the following
+    modules.shared(sharedModule);
+    modules.index(maplibregl, sharedModule);
+
+    if (typeof window !== 'undefined') {
+        maplibregl.setWorkerUrl(window.URL.createObjectURL(new Blob([workerBundleString], { type: 'text/javascript' })));
+    }
+
+    return maplibregl;
+};
+
+
+
+define("shared",["exports"],(function(t){"use strict";function e(t,e,r,n){return new(r||(r=Promise))((function(i,s){function a(t){try{l(n.next(t));}catch(t){s(t);}}function o(t){try{l(n.throw(t));}catch(t){s(t);}}function l(t){var e;t.done?i(t.value):(e=t.value,e instanceof r?e:new r((function(t){t(e);}))).then(a,o);}l((n=n.apply(t,e||[])).next());}))}function r(t){return t&&t.__esModule&&Object.prototype.hasOwnProperty.call(t,"default")?t.default:t}"function"==typeof SuppressedError&&SuppressedError;var n=i;function i(t,e){this.x=t,this.y=e;}i.prototype={clone:function(){return new i(this.x,this.y)},add:function(t){return this.clone()._add(t)},sub:function(t){return this.clone()._sub(t)},multByPoint:function(t){return this.clone()._multByPoint(t)},divByPoint:function(t){return this.clone()._divByPoint(t)},mult:function(t){return this.clone()._mult(t)},div:function(t){return this.clone()._div(t)},rotate:function(t){return this.clone()._rotate(t)},rotateAround:function(t,e){return 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0===this.sections.length?"":this.sections.map((t=>t.text)).join("")}}class Jt{constructor(t){this.values=t.slice();}static parse(t){if(t instanceof Jt)return t;if("number"==typeof t)return new Jt([t,t,t,t]);if(Array.isArray(t)&&!(t.length<1||t.length>4)){for(const e of t)if("number"!=typeof e)return;switch(t.length){case 1:t=[t[0],t[0],t[0],t[0]];break;case 2:t=[t[0],t[1],t[0],t[1]];break;case 3:t=[t[0],t[1],t[2],t[1]];}return new Jt(t)}}toString(){return JSON.stringify(this.values)}}const Wt=new Set(["center","left","right","top","bottom","top-left","top-right","bottom-left","bottom-right"]);class Qt{constructor(t){this.values=t.slice();}static parse(t){if(t instanceof Qt)return t;if(Array.isArray(t)&&!(t.length<1)&&t.length%2==0){for(let e=0;e<t.length;e+=2){const r=t[e],n=t[e+1];if("string"!=typeof r||!Wt.has(r))return;if(!Array.isArray(n)||2!==n.length||"number"!=typeof n[0]||"number"!=typeof n[1])return}return new Qt(t)}}toString(){return JSON.stringify(this.values)}}class te{constructor(t){this.name=t.name,this.available=t.available;}toString(){return this.name}static fromString(t){return t?new te({name:t,available:!1}):null}}function ee(t,e,r,n){return "number"==typeof t&&t>=0&&t<=255&&"number"==typeof e&&e>=0&&e<=255&&"number"==typeof r&&r>=0&&r<=255?void 0===n||"number"==typeof n&&n>=0&&n<=1?null:`Invalid rgba value [${[t,e,r,n].join(", ")}]: 'a' must be between 0 and 1.`:`Invalid rgba value [${("number"==typeof n?[t,e,r,n]:[t,e,r]).join(", ")}]: 'r', 'g', and 'b' must be between 0 and 255.`}function re(t){if(null===t||"string"==typeof t||"boolean"==typeof t||"number"==typeof t||t instanceof Kt||t instanceof Xt||t instanceof Yt||t instanceof Jt||t instanceof Qt||t instanceof te)return !0;if(Array.isArray(t)){for(const e of t)if(!re(e))return !1;return !0}if("object"==typeof t){for(const e in t)if(!re(t[e]))return !1;return !0}return !1}function ne(t){if(null===t)return lt;if("string"==typeof t)return ct;if("boolean"==typeof t)return ht;if("number"==typeof t)return ut;if(t instanceof Kt)return pt;if(t instanceof Xt)return yt;if(t instanceof Yt)return mt;if(t instanceof Jt)return gt;if(t instanceof Qt)return vt;if(t instanceof te)return xt;if(Array.isArray(t)){const e=t.length;let r;for(const e of t){const t=ne(e);if(r){if(r===t)continue;r=dt;break}r=t;}return bt(r||dt,e)}return ft}function ie(t){const e=typeof t;return null===t?"":"string"===e||"number"===e||"boolean"===e?String(t):t instanceof Kt||t instanceof Yt||t instanceof Jt||t instanceof Qt||t instanceof te?t.toString():JSON.stringify(t)}class se{constructor(t,e){this.type=t,this.value=e;}static parse(t,e){if(2!==t.length)return e.error(`'literal' expression requires exactly one argument, but found ${t.length-1} instead.`);if(!re(t[1]))return e.error("invalid value");const r=t[1];let n=ne(r);const i=e.expectedType;return "array"!==n.kind||0!==n.N||!i||"array"!==i.kind||"number"==typeof i.N&&0!==i.N||(n=i),new se(n,r)}evaluate(){return this.value}eachChild(){}outputDefined(){return !0}}class ae{constructor(t){this.name="ExpressionEvaluationError",this.message=t;}toJSON(){return this.message}}const oe={string:ct,number:ut,boolean:ht,object:ft};class le{constructor(t,e){this.type=t,this.args=e;}static parse(t,e){if(t.length<2)return e.error("Expected at least one argument.");let r,n=1;const i=t[0];if("array"===i){let i,s;if(t.length>2){const r=t[1];if("string"!=typeof r||!(r in oe)||"object"===r)return e.error('The item type argument of "array" must be one of string, number, boolean',1);i=oe[r],n++;}else i=dt;if(t.length>3){if(null!==t[2]&&("number"!=typeof t[2]||t[2]<0||t[2]!==Math.floor(t[2])))return e.error('The length argument to "array" must be a positive integer literal',2);s=t[2],n++;}r=bt(i,s);}else {if(!oe[i])throw new Error(`Types doesn't contain name = ${i}`);r=oe[i];}const s=[];for(;n<t.length;n++){const r=e.parse(t[n],n,dt);if(!r)return null;s.push(r);}return new le(r,s)}evaluate(t){for(let e=0;e<this.args.length;e++){const r=this.args[e].evaluate(t);if(!At(this.type,ne(r)))return r;if(e===this.args.length-1)throw new ae(`Expected value to be of type ${wt(this.type)}, but found ${wt(ne(r))} instead.`)}throw new Error}eachChild(t){this.args.forEach(t);}outputDefined(){return this.args.every((t=>t.outputDefined()))}}const ue={"to-boolean":ht,"to-color":pt,"to-number":ut,"to-string":ct};class ce{constructor(t,e){this.type=t,this.args=e;}static parse(t,e){if(t.length<2)return e.error("Expected at least one argument.");const r=t[0];if(!ue[r])throw new Error(`Can't parse ${r} as it is not part of the known types`);if(("to-boolean"===r||"to-string"===r)&&2!==t.length)return e.error("Expected one argument.");const n=ue[r],i=[];for(let r=1;r<t.length;r++){const n=e.parse(t[r],r,dt);if(!n)return null;i.push(n);}return new ce(n,i)}evaluate(t){switch(this.type.kind){case"boolean":return Boolean(this.args[0].evaluate(t));case"color":{let e,r;for(const n of this.args){if(e=n.evaluate(t),r=null,e instanceof Kt)return e;if("string"==typeof e){const r=t.parseColor(e);if(r)return r}else if(Array.isArray(e)&&(r=e.length<3||e.length>4?`Invalid rbga value ${JSON.stringify(e)}: expected an array containing either three or four numeric values.`:ee(e[0],e[1],e[2],e[3]),!r))return new Kt(e[0]/255,e[1]/255,e[2]/255,e[3])}throw new ae(r||`Could not parse color from value '${"string"==typeof e?e:JSON.stringify(e)}'`)}case"padding":{let e;for(const r of this.args){e=r.evaluate(t);const n=Jt.parse(e);if(n)return n}throw new ae(`Could not parse padding from value '${"string"==typeof e?e:JSON.stringify(e)}'`)}case"variableAnchorOffsetCollection":{let e;for(const r of this.args){e=r.evaluate(t);const n=Qt.parse(e);if(n)return n}throw new ae(`Could not parse variableAnchorOffsetCollection from value '${"string"==typeof e?e:JSON.stringify(e)}'`)}case"number":{let e=null;for(const r of this.args){if(e=r.evaluate(t),null===e)return 0;const n=Number(e);if(!isNaN(n))return n}throw new ae(`Could not convert ${JSON.stringify(e)} to number.`)}case"formatted":return Yt.fromString(ie(this.args[0].evaluate(t)));case"resolvedImage":return te.fromString(ie(this.args[0].evaluate(t)));default:return ie(this.args[0].evaluate(t))}}eachChild(t){this.args.forEach(t);}outputDefined(){return this.args.every((t=>t.outputDefined()))}}const he=["Unknown","Point","LineString","Polygon"];class pe{constructor(){this.globals=null,this.feature=null,this.featureState=null,this.formattedSection=null,this._parseColorCache={},this.availableImages=null,this.canonical=null;}id(){return this.feature&&"id"in this.feature?this.feature.id:null}geometryType(){return this.feature?"number"==typeof this.feature.type?he[this.feature.type]:this.feature.type:null}geometry(){return this.feature&&"geometry"in this.feature?this.feature.geometry:null}canonicalID(){return this.canonical}properties(){return this.feature&&this.feature.properties||{}}parseColor(t){let e=this._parseColorCache[t];return e||(e=this._parseColorCache[t]=Kt.parse(t)),e}}class fe{constructor(t,e,r=[],n,i=new ot,s=[]){this.registry=t,this.path=r,this.key=r.map((t=>`[${t}]`)).join(""),this.scope=i,this.errors=s,this.expectedType=n,this._isConstant=e;}parse(t,e,r,n,i={}){return e?this.concat(e,r,n)._parse(t,i):this._parse(t,i)}_parse(t,e){function r(t,e,r){return "assert"===r?new le(e,[t]):"coerce"===r?new ce(e,[t]):t}if(null!==t&&"string"!=typeof t&&"boolean"!=typeof t&&"number"!=typeof t||(t=["literal",t]),Array.isArray(t)){if(0===t.length)return this.error('Expected an array with at least one element. 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r=e.parse(t[1],1,dt),n=e.parse(t[2],2,dt);if(!r||!n)return null;if(!St(r.type,[ht,ct,ut,lt,dt]))return e.error(`Expected first argument to be of type boolean, string, number or null, but found ${wt(r.type)} instead`);if(4===t.length){const i=e.parse(t[3],3,ut);return i?new xe(r,n,i):null}return new xe(r,n)}evaluate(t){const e=this.needle.evaluate(t),r=this.haystack.evaluate(t);if(!kt(e,["boolean","string","number","null"]))throw new ae(`Expected first argument to be of type boolean, string, number or null, but found ${wt(ne(e))} instead.`);let n;if(this.fromIndex&&(n=this.fromIndex.evaluate(t)),kt(r,["string"])){const t=r.indexOf(e,n);return -1===t?-1:[...r.slice(0,t)].length}if(kt(r,["array"]))return r.indexOf(e,n);throw new ae(`Expected second argument to be of type array or string, but found ${wt(ne(r))} instead.`)}eachChild(t){t(this.needle),t(this.haystack),this.fromIndex&&t(this.fromIndex);}outputDefined(){return !1}}class ve{constructor(t,e,r,n,i,s){this.inputType=t,this.type=e,this.input=r,this.cases=n,this.outputs=i,this.otherwise=s;}static parse(t,e){if(t.length<5)return e.error(`Expected at least 4 arguments, but found only ${t.length-1}.`);if(t.length%2!=1)return e.error("Expected an even number of arguments.");let r,n;e.expectedType&&"value"!==e.expectedType.kind&&(n=e.expectedType);const i={},s=[];for(let a=2;a<t.length-1;a+=2){let o=t[a];const l=t[a+1];Array.isArray(o)||(o=[o]);const u=e.concat(a);if(0===o.length)return u.error("Expected at least one branch label.");for(const t of o){if("number"!=typeof t&&"string"!=typeof t)return u.error("Branch labels must be numbers or strings.");if("number"==typeof t&&Math.abs(t)>Number.MAX_SAFE_INTEGER)return u.error(`Branch labels must be integers no larger than ${Number.MAX_SAFE_INTEGER}.`);if("number"==typeof t&&Math.floor(t)!==t)return u.error("Numeric branch labels must be integer values.");if(r){if(u.checkSubtype(r,ne(t)))return null}else r=ne(t);if(void 0!==i[String(t)])return u.error("Branch labels must be unique.");i[String(t)]=s.length;}const c=e.parse(l,a,n);if(!c)return null;n=n||c.type,s.push(c);}const a=e.parse(t[1],1,dt);if(!a)return null;const o=e.parse(t[t.length-1],t.length-1,n);return o?"value"!==a.type.kind&&e.concat(1).checkSubtype(r,a.type)?null:new ve(r,n,a,i,s,o):null}evaluate(t){const e=this.input.evaluate(t);return (ne(e)===this.inputType&&this.outputs[this.cases[e]]||this.otherwise).evaluate(t)}eachChild(t){t(this.input),this.outputs.forEach(t),t(this.otherwise);}outputDefined(){return this.outputs.every((t=>t.outputDefined()))&&this.otherwise.outputDefined()}}class be{constructor(t,e,r){this.type=t,this.branches=e,this.otherwise=r;}static parse(t,e){if(t.length<4)return e.error(`Expected at least 3 arguments, but found only ${t.length-1}.`);if(t.length%2!=0)return e.error("Expected an odd number of arguments.");let r;e.expectedType&&"value"!==e.expectedType.kind&&(r=e.expectedType);const n=[];for(let i=1;i<t.length-1;i+=2){const s=e.parse(t[i],i,ht);if(!s)return null;const a=e.parse(t[i+1],i+1,r);if(!a)return null;n.push([s,a]),r=r||a.type;}const i=e.parse(t[t.length-1],t.length-1,r);if(!i)return null;if(!r)throw new Error("Can't infer output type");return new be(r,n,i)}evaluate(t){for(const[e,r]of this.branches)if(e.evaluate(t))return r.evaluate(t);return this.otherwise.evaluate(t)}eachChild(t){for(const[e,r]of this.branches)t(e),t(r);t(this.otherwise);}outputDefined(){return this.branches.every((([t,e])=>e.outputDefined()))&&this.otherwise.outputDefined()}}class we{constructor(t,e,r,n){this.type=t,this.input=e,this.beginIndex=r,this.endIndex=n;}static parse(t,e){if(t.length<=2||t.length>=5)return e.error(`Expected 3 or 4 arguments, but found ${t.length-1} instead.`);const r=e.parse(t[1],1,dt),n=e.parse(t[2],2,ut);if(!r||!n)return null;if(!St(r.type,[bt(dt),ct,dt]))return e.error(`Expected first argument to be of type array or string, but found ${wt(r.type)} 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this._forEachCell(t,e,r,n,this._queryCell,s,{},i),s}}_queryCell(t,e,r,n,i,s,a,o){const l=this.cells[i];if(null!==l){const i=this.keys,u=this.bboxes;for(let c=0;c<l.length;c++){const h=l[c];if(void 0===a[h]){const l=4*h;(o?o(u[l+0],u[l+1],u[l+2],u[l+3]):t<=u[l+2]&&e<=u[l+3]&&r>=u[l+0]&&n>=u[l+1])?(a[h]=!0,s.push(i[h])):a[h]=!1;}}}}_forEachCell(t,e,r,n,i,s,a,o){const l=this._convertToCellCoord(t),u=this._convertToCellCoord(e),c=this._convertToCellCoord(r),h=this._convertToCellCoord(n);for(let p=l;p<=c;p++)for(let l=u;l<=h;l++){const u=this.d*l+p;if((!o||o(this._convertFromCellCoord(p),this._convertFromCellCoord(l),this._convertFromCellCoord(p+1),this._convertFromCellCoord(l+1)))&&i.call(this,t,e,r,n,u,s,a,o))return}}_convertFromCellCoord(t){return (t-this.padding)/this.scale}_convertToCellCoord(t){return Math.max(0,Math.min(this.d-1,Math.floor(t*this.scale)+this.padding))}toArrayBuffer(){if(this.arrayBuffer)return this.arrayBuffer;const t=this.cells,e=3+this.cells.length+1+1;let r=0;for(let t=0;t<this.cells.length;t++)r+=this.cells[t].length;const n=new Int32Array(e+r+this.keys.length+this.bboxes.length);n[0]=this.extent,n[1]=this.n,n[2]=this.padding;let i=e;for(let e=0;e<t.length;e++){const r=t[e];n[3+e]=i,n.set(r,i),i+=r.length;}return n[3+t.length]=i,n.set(this.keys,i),i+=this.keys.length,n[3+t.length+1]=i,n.set(this.bboxes,i),i+=this.bboxes.length,n.buffer}static serialize(t,e){const r=t.toArrayBuffer();return e&&e.push(r),{buffer:r}}static deserialize(t){return new vi(t.buffer)}}const bi={};function wi(t,e,r={}){if(bi[t])throw new Error(`${t} is already 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this.first?(this.first=!1,this.lastIntegerZoom=r,this.lastIntegerZoomTime=0,this.lastZoom=t,this.lastFloorZoom=r,!0):(this.lastFloorZoom>r?(this.lastIntegerZoom=r+1,this.lastIntegerZoomTime=e):this.lastFloorZoom<r&&(this.lastIntegerZoom=r,this.lastIntegerZoomTime=e),t!==this.lastZoom&&(this.lastZoom=t,this.lastFloorZoom=r,!0))}}const zi={"Latin-1 Supplement":t=>t>=128&&t<=255,"Hangul Jamo":t=>t>=4352&&t<=4607,Khmer:t=>t>=6016&&t<=6143,"General Punctuation":t=>t>=8192&&t<=8303,"Letterlike Symbols":t=>t>=8448&&t<=8527,"Number Forms":t=>t>=8528&&t<=8591,"Miscellaneous Technical":t=>t>=8960&&t<=9215,"Control Pictures":t=>t>=9216&&t<=9279,"Optical Character Recognition":t=>t>=9280&&t<=9311,"Enclosed Alphanumerics":t=>t>=9312&&t<=9471,"Geometric Shapes":t=>t>=9632&&t<=9727,"Miscellaneous Symbols":t=>t>=9728&&t<=9983,"Miscellaneous Symbols and Arrows":t=>t>=11008&&t<=11263,"Ideographic Description Characters":t=>t>=12272&&t<=12287,"CJK Symbols and Punctuation":t=>t>=12288&&t<=12351,Katakana:t=>t>=12448&&t<=12543,Kanbun:t=>t>=12688&&t<=12703,"CJK Strokes":t=>t>=12736&&t<=12783,"Enclosed CJK Letters and Months":t=>t>=12800&&t<=13055,"CJK Compatibility":t=>t>=13056&&t<=13311,"Yijing Hexagram Symbols":t=>t>=19904&&t<=19967,"Private Use Area":t=>t>=57344&&t<=63743,"Vertical Forms":t=>t>=65040&&t<=65055,"CJK Compatibility Forms":t=>t>=65072&&t<=65103,"Small Form Variants":t=>t>=65104&&t<=65135,"Halfwidth and Fullwidth Forms":t=>t>=65280&&t<=65519};function Pi(t){for(const e of t)if(Ti(e.charCodeAt(0)))return !0;return !1}function Ci(t){for(const e of t)if(!Ei(e.charCodeAt(0)))return !1;return !0}function Bi(t){const e=t.map((t=>{try{return new RegExp(`\\p{sc=${t}}`,"u").source}catch(t){return null}})).filter((t=>t));return new RegExp(e.join("|"),"u")}const Vi=Bi(["Arab","Dupl","Mong","Ougr","Syrc"]);function Ei(t){return !Vi.test(String.fromCodePoint(t))}const Fi=Bi(["Bopo","Hani","Hira","Kana","Kits","Nshu","Tang","Yiii"]);function Ti(t){return !(746!==t&&747!==t&&(t<4352||!(zi["CJK Compatibility Forms"](t)&&!(t>=65097&&t<=65103)||zi["CJK Compatibility"](t)||zi["CJK Strokes"](t)||!(!zi["CJK Symbols and Punctuation"](t)||t>=12296&&t<=12305||t>=12308&&t<=12319||12336===t)||zi["Enclosed CJK Letters and Months"](t)||zi["Ideographic Description Characters"](t)||zi.Kanbun(t)||zi.Katakana(t)&&12540!==t||!(!zi["Halfwidth and Fullwidth Forms"](t)||65288===t||65289===t||65293===t||t>=65306&&t<=65310||65339===t||65341===t||65343===t||t>=65371&&t<=65503||65507===t||t>=65512&&t<=65519)||!(!zi["Small Form Variants"](t)||t>=65112&&t<=65118||t>=65123&&t<=65126)||zi["Vertical Forms"](t)||zi["Yijing Hexagram Symbols"](t)||/\p{sc=Cans}/u.test(String.fromCodePoint(t))||/\p{sc=Hang}/u.test(String.fromCodePoint(t))||Fi.test(String.fromCodePoint(t)))))}function $i(t){return !(Ti(t)||function(t){return !!(zi["Latin-1 Supplement"](t)&&(167===t||169===t||174===t||177===t||188===t||189===t||190===t||215===t||247===t)||zi["General Punctuation"](t)&&(8214===t||8224===t||8225===t||8240===t||8241===t||8251===t||8252===t||8258===t||8263===t||8264===t||8265===t||8273===t)||zi["Letterlike Symbols"](t)||zi["Number Forms"](t)||zi["Miscellaneous Technical"](t)&&(t>=8960&&t<=8967||t>=8972&&t<=8991||t>=8996&&t<=9e3||9003===t||t>=9085&&t<=9114||t>=9150&&t<=9165||9167===t||t>=9169&&t<=9179||t>=9186&&t<=9215)||zi["Control Pictures"](t)&&9251!==t||zi["Optical Character Recognition"](t)||zi["Enclosed Alphanumerics"](t)||zi["Geometric Shapes"](t)||zi["Miscellaneous Symbols"](t)&&!(t>=9754&&t<=9759)||zi["Miscellaneous Symbols and Arrows"](t)&&(t>=11026&&t<=11055||t>=11088&&t<=11097||t>=11192&&t<=11243)||zi["CJK Symbols and Punctuation"](t)||zi.Katakana(t)||zi["Private Use Area"](t)||zi["CJK Compatibility Forms"](t)||zi["Small Form Variants"](t)||zi["Halfwidth and Fullwidth Forms"](t)||8734===t||8756===t||8757===t||t>=9984&&t<=10087||t>=10102&&t<=10131||65532===t||65533===t)}(t))}const Li=Bi(["Adlm","Arab","Armi","Avst","Chrs","Cprt","Egyp","Elym","Gara","Hatr","Hebr","Hung","Khar","Lydi","Mand","Mani","Mend","Merc","Mero","Narb","Nbat","Nkoo","Orkh","Palm","Phli","Phlp","Phnx","Prti","Rohg","Samr","Sarb","Sogo","Syrc","Thaa","Todr","Yezi"]);function Di(t){return Li.test(String.fromCodePoint(t))}function Oi(t,e){return !(!e&&Di(t)||t>=2304&&t<=3583||t>=3840&&t<=4255||zi.Khmer(t))}function ji(t){for(const e of t)if(Di(e.charCodeAt(0)))return !0;return !1}const Ri=new class{constructor(){this.applyArabicShaping=null,this.processBidirectionalText=null,this.processStyledBidirectionalText=null,this.pluginStatus="unavailable",this.pluginURL=null;}setState(t){this.pluginStatus=t.pluginStatus,this.pluginURL=t.pluginURL;}getState(){return {pluginStatus:this.pluginStatus,pluginURL:this.pluginURL}}setMethods(t){this.applyArabicShaping=t.applyArabicShaping,this.processBidirectionalText=t.processBidirectionalText,this.processStyledBidirectionalText=t.processStyledBidirectionalText;}isParsed(){return null!=this.applyArabicShaping&&null!=this.processBidirectionalText&&null!=this.processStyledBidirectionalText}getPluginURL(){return this.pluginURL}getRTLTextPluginStatus(){return this.pluginStatus}};class Ui{constructor(t,e){this.zoom=t,e?(this.now=e.now,this.fadeDuration=e.fadeDuration,this.zoomHistory=e.zoomHistory,this.transition=e.transition):(this.now=0,this.fadeDuration=0,this.zoomHistory=new Ii,this.transition={});}isSupportedScript(t){return function(t,e){for(const r of t)if(!Oi(r.charCodeAt(0),e))return !1;return !0}(t,"loaded"===Ri.getRTLTextPluginStatus())}crossFadingFactor(){return 0===this.fadeDuration?1:Math.min((this.now-this.zoomHistory.lastIntegerZoomTime)/this.fadeDuration,1)}getCrossfadeParameters(){const t=this.zoom,e=t-Math.floor(t),r=this.crossFadingFactor();return t>this.zoomHistory.lastIntegerZoom?{fromScale:2,toScale:1,t:e+(1-e)*r}:{fromScale:.5,toScale:1,t:1-(1-r)*e}}}class qi{constructor(t,e){this.property=t,this.value=e,this.expression=function(t,e){if(cn(t))return new Sn(t,e);if(vn(t)){const r=An(t,e);if("error"===r.result)throw new Error(r.value.map((t=>`${t.key}: ${t.message}`)).join(", "));return r.value}{let r=t;return "color"===e.type&&"string"==typeof t?r=Kt.parse(t):"padding"!==e.type||"number"!=typeof t&&!Array.isArray(t)?"variableAnchorOffsetCollection"===e.type&&Array.isArray(t)&&(r=Qt.parse(t)):r=Jt.parse(t),{kind:"constant",evaluate:()=>r}}}(void 0===e?t.specification.default:e,t.specification);}isDataDriven(){return "source"===this.expression.kind||"composite"===this.expression.kind}possiblyEvaluate(t,e,r){return this.property.possiblyEvaluate(this,t,e,r)}}class Ni{constructor(t){this.property=t,this.value=new qi(t,void 0);}transitioned(t,e){return new Gi(this.property,this.value,e,g({},t.transition,this.transition),t.now)}untransitioned(){return new Gi(this.property,this.value,null,{},0)}}class Zi{constructor(t){this._properties=t,this._values=Object.create(t.defaultTransitionablePropertyValues);}getValue(t){return w(this._values[t].value.value)}setValue(t,e){Object.prototype.hasOwnProperty.call(this._values,t)||(this._values[t]=new Ni(this._values[t].property)),this._values[t].value=new qi(this._values[t].property,null===e?void 0:w(e));}getTransition(t){return w(this._values[t].transition)}setTransition(t,e){Object.prototype.hasOwnProperty.call(this._values,t)||(this._values[t]=new Ni(this._values[t].property)),this._values[t].transition=w(e)||void 0;}serialize(){const t={};for(const e of Object.keys(this._values)){const r=this.getValue(e);void 0!==r&&(t[e]=r);const n=this.getTransition(e);void 0!==n&&(t[`${e}-transition`]=n);}return t}transitioned(t,e){const r=new Ki(this._properties);for(const n of Object.keys(this._values))r._values[n]=this._values[n].transitioned(t,e._values[n]);return r}untransitioned(){const t=new Ki(this._properties);for(const e of Object.keys(this._values))t._values[e]=this._values[e].untransitioned();return t}}class Gi{constructor(t,e,r,n,i){this.property=t,this.value=e,this.begin=i+n.delay||0,this.end=this.begin+n.duration||0,t.specification.transition&&(n.delay||n.duration)&&(this.prior=r);}possiblyEvaluate(t,e,r){const n=t.now||0,i=this.value.possiblyEvaluate(t,e,r),s=this.prior;if(s){if(n>this.end)return this.prior=null,i;if(this.value.isDataDriven())return this.prior=null,i;if(n<this.begin)return s.possiblyEvaluate(t,e,r);{const a=(n-this.begin)/(this.end-this.begin);return this.property.interpolate(s.possiblyEvaluate(t,e,r),i,function(t){if(t<=0)return 0;if(t>=1)return 1;const e=t*t,r=e*t;return 4*(t<.5?r:3*(t-e)+r-.75)}(a))}}return i}}class Ki{constructor(t){this._properties=t,this._values=Object.create(t.defaultTransitioningPropertyValues);}possiblyEvaluate(t,e,r){const n=new Yi(this._properties);for(const i of Object.keys(this._values))n._values[i]=this._values[i].possiblyEvaluate(t,e,r);return n}hasTransition(){for(const t of Object.keys(this._values))if(this._values[t].prior)return !0;return !1}}class Xi{constructor(t){this._properties=t,this._values=Object.create(t.defaultPropertyValues);}hasValue(t){return void 0!==this._values[t].value}getValue(t){return w(this._values[t].value)}setValue(t,e){this._values[t]=new qi(this._values[t].property,null===e?void 0:w(e));}serialize(){const t={};for(const e of Object.keys(this._values)){const r=this.getValue(e);void 0!==r&&(t[e]=r);}return t}possiblyEvaluate(t,e,r){const n=new Yi(this._properties);for(const i of Object.keys(this._values))n._values[i]=this._values[i].possiblyEvaluate(t,e,r);return n}}class Hi{constructor(t,e,r){this.property=t,this.value=e,this.parameters=r;}isConstant(){return "constant"===this.value.kind}constantOr(t){return "constant"===this.value.kind?this.value.value:t}evaluate(t,e,r,n){return this.property.evaluate(this.value,this.parameters,t,e,r,n)}}class Yi{constructor(t){this._properties=t,this._values=Object.create(t.defaultPossiblyEvaluatedValues);}get(t){return this._values[t]}}class Ji{constructor(t){this.specification=t;}possiblyEvaluate(t,e){if(t.isDataDriven())throw new Error("Value should not be data driven");return t.expression.evaluate(e)}interpolate(t,e,r){const n=Ce[this.specification.type];return n?n(t,e,r):t}}class Wi{constructor(t,e){this.specification=t,this.overrides=e;}possiblyEvaluate(t,e,r,n){return new Hi(this,"constant"===t.expression.kind||"camera"===t.expression.kind?{kind:"constant",value:t.expression.evaluate(e,null,{},r,n)}:t.expression,e)}interpolate(t,e,r){if("constant"!==t.value.kind||"constant"!==e.value.kind)return t;if(void 0===t.value.value||void 0===e.value.value)return new Hi(this,{kind:"constant",value:void 0},t.parameters);const n=Ce[this.specification.type];if(n){const i=n(t.value.value,e.value.value,r);return new Hi(this,{kind:"constant",value:i},t.parameters)}return t}evaluate(t,e,r,n,i,s){return "constant"===t.kind?t.value:t.evaluate(e,r,n,i,s)}}class Qi extends Wi{possiblyEvaluate(t,e,r,n){if(void 0===t.value)return new Hi(this,{kind:"constant",value:void 0},e);if("constant"===t.expression.kind){const i=t.expression.evaluate(e,null,{},r,n),s="resolvedImage"===t.property.specification.type&&"string"!=typeof i?i.name:i,a=this._calculate(s,s,s,e);return new Hi(this,{kind:"constant",value:a},e)}if("camera"===t.expression.kind){const r=this._calculate(t.expression.evaluate({zoom:e.zoom-1}),t.expression.evaluate({zoom:e.zoom}),t.expression.evaluate({zoom:e.zoom+1}),e);return new Hi(this,{kind:"constant",value:r},e)}return new Hi(this,t.expression,e)}evaluate(t,e,r,n,i,s){if("source"===t.kind){const a=t.evaluate(e,r,n,i,s);return this._calculate(a,a,a,e)}return "composite"===t.kind?this._calculate(t.evaluate({zoom:Math.floor(e.zoom)-1},r,n),t.evaluate({zoom:Math.floor(e.zoom)},r,n),t.evaluate({zoom:Math.floor(e.zoom)+1},r,n),e):t.value}_calculate(t,e,r,n){return n.zoom>n.zoomHistory.lastIntegerZoom?{from:t,to:e}:{from:r,to:e}}interpolate(t){return t}}class ts{constructor(t){this.specification=t;}possiblyEvaluate(t,e,r,n){if(void 0!==t.value){if("constant"===t.expression.kind){const i=t.expression.evaluate(e,null,{},r,n);return this._calculate(i,i,i,e)}return this._calculate(t.expression.evaluate(new Ui(Math.floor(e.zoom-1),e)),t.expression.evaluate(new Ui(Math.floor(e.zoom),e)),t.expression.evaluate(new Ui(Math.floor(e.zoom+1),e)),e)}}_calculate(t,e,r,n){return n.zoom>n.zoomHistory.lastIntegerZoom?{from:t,to:e}:{from:r,to:e}}interpolate(t){return t}}class es{constructor(t){this.specification=t;}possiblyEvaluate(t,e,r,n){return !!t.expression.evaluate(e,null,{},r,n)}interpolate(){return !1}}class rs{constructor(t){this.properties=t,this.defaultPropertyValues={},this.defaultTransitionablePropertyValues={},this.defaultTransitioningPropertyValues={},this.defaultPossiblyEvaluatedValues={},this.overridableProperties=[];for(const e in t){const r=t[e];r.specification.overridable&&this.overridableProperties.push(e);const n=this.defaultPropertyValues[e]=new qi(r,void 0),i=this.defaultTransitionablePropertyValues[e]=new Ni(r);this.defaultTransitioningPropertyValues[e]=i.untransitioned(),this.defaultPossiblyEvaluatedValues[e]=n.possiblyEvaluate({});}}}wi("DataDrivenProperty",Wi),wi("DataConstantProperty",Ji),wi("CrossFadedDataDrivenProperty",Qi),wi("CrossFadedProperty",ts),wi("ColorRampProperty",es);const ns="-transition";class is extends Z{constructor(t,e){if(super(),this.id=t.id,this.type=t.type,this._featureFilter={filter:()=>!0,needGeometry:!1},"custom"!==t.type&&(this.metadata=t.metadata,this.minzoom=t.minzoom,this.maxzoom=t.maxzoom,"background"!==t.type&&(this.source=t.source,this.sourceLayer=t["source-layer"],this.filter=t.filter),e.layout&&(this._unevaluatedLayout=new Xi(e.layout)),e.paint)){this._transitionablePaint=new Zi(e.paint);for(const e in t.paint)this.setPaintProperty(e,t.paint[e],{validate:!1});for(const e in t.layout)this.setLayoutProperty(e,t.layout[e],{validate:!1});this._transitioningPaint=this._transitionablePaint.untransitioned(),this.paint=new Yi(e.paint);}}getCrossfadeParameters(){return this._crossfadeParameters}getLayoutProperty(t){return "visibility"===t?this.visibility:this._unevaluatedLayout.getValue(t)}setLayoutProperty(t,e,r={}){null!=e&&this._validate(gi,`layers.${this.id}.layout.${t}`,t,e,r)||("visibility"!==t?this._unevaluatedLayout.setValue(t,e):this.visibility=e);}getPaintProperty(t){return t.endsWith(ns)?this._transitionablePaint.getTransition(t.slice(0,-11)):this._transitionablePaint.getValue(t)}setPaintProperty(t,e,r={}){if(null!=e&&this._validate(mi,`layers.${this.id}.paint.${t}`,t,e,r))return !1;if(t.endsWith(ns))return this._transitionablePaint.setTransition(t.slice(0,-11),e||void 0),!1;{const r=this._transitionablePaint._values[t],n="cross-faded-data-driven"===r.property.specification["property-type"],i=r.value.isDataDriven(),s=r.value;this._transitionablePaint.setValue(t,e),this._handleSpecialPaintPropertyUpdate(t);const a=this._transitionablePaint._values[t].value;return a.isDataDriven()||i||n||this._handleOverridablePaintPropertyUpdate(t,s,a)}}_handleSpecialPaintPropertyUpdate(t){}_handleOverridablePaintPropertyUpdate(t,e,r){return !1}isHidden(t){return !!(this.minzoom&&t<this.minzoom)||!!(this.maxzoom&&t>=this.maxzoom)||"none"===this.visibility}updateTransitions(t){this._transitioningPaint=this._transitionablePaint.transitioned(t,this._transitioningPaint);}hasTransition(){return this._transitioningPaint.hasTransition()}recalculate(t,e){t.getCrossfadeParameters&&(this._crossfadeParameters=t.getCrossfadeParameters()),this._unevaluatedLayout&&(this.layout=this._unevaluatedLayout.possiblyEvaluate(t,void 0,e)),this.paint=this._transitioningPaint.possiblyEvaluate(t,void 0,e);}serialize(){const t={id:this.id,type:this.type,source:this.source,"source-layer":this.sourceLayer,metadata:this.metadata,minzoom:this.minzoom,maxzoom:this.maxzoom,filter:this.filter,layout:this._unevaluatedLayout&&this._unevaluatedLayout.serialize(),paint:this._transitionablePaint&&this._transitionablePaint.serialize()};return this.visibility&&(t.layout=t.layout||{},t.layout.visibility=this.visibility),b(t,((t,e)=>!(void 0===t||"layout"===e&&!Object.keys(t).length||"paint"===e&&!Object.keys(t).length)))}_validate(t,e,r,n,i={}){return (!i||!1!==i.validate)&&xi(this,t.call(fi,{key:e,layerType:this.type,objectKey:r,value:n,styleSpec:G,style:{glyphs:!0,sprite:!0}}))}is3D(){return !1}isTileClipped(){return !1}hasOffscreenPass(){return !1}resize(){}isStateDependent(){for(const t in this.paint._values){const e=this.paint.get(t);if(e instanceof Hi&&an(e.property.specification)&&("source"===e.value.kind||"composite"===e.value.kind)&&e.value.isStateDependent)return !0}return !1}}const ss={Int8:Int8Array,Uint8:Uint8Array,Int16:Int16Array,Uint16:Uint16Array,Int32:Int32Array,Uint32:Uint32Array,Float32:Float32Array};class as{constructor(t,e){this._structArray=t,this._pos1=e*this.size,this._pos2=this._pos1/2,this._pos4=this._pos1/4,this._pos8=this._pos1/8;}}class os{constructor(){this.isTransferred=!1,this.capacity=-1,this.resize(0);}static serialize(t,e){return t._trim(),e&&(t.isTransferred=!0,e.push(t.arrayBuffer)),{length:t.length,arrayBuffer:t.arrayBuffer}}static deserialize(t){const e=Object.create(this.prototype);return e.arrayBuffer=t.arrayBuffer,e.length=t.length,e.capacity=t.arrayBuffer.byteLength/e.bytesPerElement,e._refreshViews(),e}_trim(){this.length!==this.capacity&&(this.capacity=this.length,this.arrayBuffer=this.arrayBuffer.slice(0,this.length*this.bytesPerElement),this._refreshViews());}clear(){this.length=0;}resize(t){this.reserve(t),this.length=t;}reserve(t){if(t>this.capacity){this.capacity=Math.max(t,Math.floor(5*this.capacity),128),this.arrayBuffer=new ArrayBuffer(this.capacity*this.bytesPerElement);const e=this.uint8;this._refreshViews(),e&&this.uint8.set(e);}}_refreshViews(){throw new Error("_refreshViews() must be implemented by each concrete StructArray layout")}}function ls(t,e=1){let r=0,n=0;return {members:t.map((t=>{const i=ss[t.type].BYTES_PER_ELEMENT,s=r=us(r,Math.max(e,i)),a=t.components||1;return n=Math.max(n,i),r+=i*a,{name:t.name,type:t.type,components:a,offset:s}})),size:us(r,Math.max(n,e)),alignment:e}}function us(t,e){return Math.ceil(t/e)*e}class cs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e){const r=this.length;return this.resize(r+1),this.emplace(r,t,e)}emplace(t,e,r){const n=2*t;return this.int16[n+0]=e,this.int16[n+1]=r,t}}cs.prototype.bytesPerElement=4,wi("StructArrayLayout2i4",cs);class hs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r){const n=this.length;return this.resize(n+1),this.emplace(n,t,e,r)}emplace(t,e,r,n){const i=3*t;return this.int16[i+0]=e,this.int16[i+1]=r,this.int16[i+2]=n,t}}hs.prototype.bytesPerElement=6,wi("StructArrayLayout3i6",hs);class ps extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n){const i=this.length;return this.resize(i+1),this.emplace(i,t,e,r,n)}emplace(t,e,r,n,i){const s=4*t;return this.int16[s+0]=e,this.int16[s+1]=r,this.int16[s+2]=n,this.int16[s+3]=i,t}}ps.prototype.bytesPerElement=8,wi("StructArrayLayout4i8",ps);class fs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s){const a=this.length;return this.resize(a+1),this.emplace(a,t,e,r,n,i,s)}emplace(t,e,r,n,i,s,a){const o=6*t;return this.int16[o+0]=e,this.int16[o+1]=r,this.int16[o+2]=n,this.int16[o+3]=i,this.int16[o+4]=s,this.int16[o+5]=a,t}}fs.prototype.bytesPerElement=12,wi("StructArrayLayout2i4i12",fs);class ds extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s){const a=this.length;return this.resize(a+1),this.emplace(a,t,e,r,n,i,s)}emplace(t,e,r,n,i,s,a){const o=4*t,l=8*t;return this.int16[o+0]=e,this.int16[o+1]=r,this.uint8[l+4]=n,this.uint8[l+5]=i,this.uint8[l+6]=s,this.uint8[l+7]=a,t}}ds.prototype.bytesPerElement=8,wi("StructArrayLayout2i4ub8",ds);class ys extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e){const r=this.length;return this.resize(r+1),this.emplace(r,t,e)}emplace(t,e,r){const n=2*t;return this.float32[n+0]=e,this.float32[n+1]=r,t}}ys.prototype.bytesPerElement=8,wi("StructArrayLayout2f8",ys);class ms extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s,a,o,l,u){const c=this.length;return this.resize(c+1),this.emplace(c,t,e,r,n,i,s,a,o,l,u)}emplace(t,e,r,n,i,s,a,o,l,u,c){const h=10*t;return this.uint16[h+0]=e,this.uint16[h+1]=r,this.uint16[h+2]=n,this.uint16[h+3]=i,this.uint16[h+4]=s,this.uint16[h+5]=a,this.uint16[h+6]=o,this.uint16[h+7]=l,this.uint16[h+8]=u,this.uint16[h+9]=c,t}}ms.prototype.bytesPerElement=20,wi("StructArrayLayout10ui20",ms);class gs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s,a,o,l,u,c,h){const p=this.length;return this.resize(p+1),this.emplace(p,t,e,r,n,i,s,a,o,l,u,c,h)}emplace(t,e,r,n,i,s,a,o,l,u,c,h,p){const f=12*t;return this.int16[f+0]=e,this.int16[f+1]=r,this.int16[f+2]=n,this.int16[f+3]=i,this.uint16[f+4]=s,this.uint16[f+5]=a,this.uint16[f+6]=o,this.uint16[f+7]=l,this.int16[f+8]=u,this.int16[f+9]=c,this.int16[f+10]=h,this.int16[f+11]=p,t}}gs.prototype.bytesPerElement=24,wi("StructArrayLayout4i4ui4i24",gs);class xs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e,r){const n=this.length;return this.resize(n+1),this.emplace(n,t,e,r)}emplace(t,e,r,n){const i=3*t;return this.float32[i+0]=e,this.float32[i+1]=r,this.float32[i+2]=n,t}}xs.prototype.bytesPerElement=12,wi("StructArrayLayout3f12",xs);class vs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint32=new Uint32Array(this.arrayBuffer);}emplaceBack(t){const e=this.length;return this.resize(e+1),this.emplace(e,t)}emplace(t,e){return this.uint32[1*t+0]=e,t}}vs.prototype.bytesPerElement=4,wi("StructArrayLayout1ul4",vs);class bs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer),this.uint32=new Uint32Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s,a,o,l){const u=this.length;return this.resize(u+1),this.emplace(u,t,e,r,n,i,s,a,o,l)}emplace(t,e,r,n,i,s,a,o,l,u){const c=10*t,h=5*t;return this.int16[c+0]=e,this.int16[c+1]=r,this.int16[c+2]=n,this.int16[c+3]=i,this.int16[c+4]=s,this.int16[c+5]=a,this.uint32[h+3]=o,this.uint16[c+8]=l,this.uint16[c+9]=u,t}}bs.prototype.bytesPerElement=20,wi("StructArrayLayout6i1ul2ui20",bs);class ws extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s){const a=this.length;return this.resize(a+1),this.emplace(a,t,e,r,n,i,s)}emplace(t,e,r,n,i,s,a){const o=6*t;return this.int16[o+0]=e,this.int16[o+1]=r,this.int16[o+2]=n,this.int16[o+3]=i,this.int16[o+4]=s,this.int16[o+5]=a,t}}ws.prototype.bytesPerElement=12,wi("StructArrayLayout2i2i2i12",ws);class _s extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i){const s=this.length;return this.resize(s+1),this.emplace(s,t,e,r,n,i)}emplace(t,e,r,n,i,s){const a=4*t,o=8*t;return this.float32[a+0]=e,this.float32[a+1]=r,this.float32[a+2]=n,this.int16[o+6]=i,this.int16[o+7]=s,t}}_s.prototype.bytesPerElement=16,wi("StructArrayLayout2f1f2i16",_s);class As extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s){const a=this.length;return this.resize(a+1),this.emplace(a,t,e,r,n,i,s)}emplace(t,e,r,n,i,s,a){const o=16*t,l=4*t,u=8*t;return this.uint8[o+0]=e,this.uint8[o+1]=r,this.float32[l+1]=n,this.float32[l+2]=i,this.int16[u+6]=s,this.int16[u+7]=a,t}}As.prototype.bytesPerElement=16,wi("StructArrayLayout2ub2f2i16",As);class Ss extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e,r){const n=this.length;return this.resize(n+1),this.emplace(n,t,e,r)}emplace(t,e,r,n){const i=3*t;return this.uint16[i+0]=e,this.uint16[i+1]=r,this.uint16[i+2]=n,t}}Ss.prototype.bytesPerElement=6,wi("StructArrayLayout3ui6",Ss);class ks extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer),this.uint32=new Uint32Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m){const g=this.length;return this.resize(g+1),this.emplace(g,t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m)}emplace(t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m,g){const x=24*t,v=12*t,b=48*t;return this.int16[x+0]=e,this.int16[x+1]=r,this.uint16[x+2]=n,this.uint16[x+3]=i,this.uint32[v+2]=s,this.uint32[v+3]=a,this.uint32[v+4]=o,this.uint16[x+10]=l,this.uint16[x+11]=u,this.uint16[x+12]=c,this.float32[v+7]=h,this.float32[v+8]=p,this.uint8[b+36]=f,this.uint8[b+37]=d,this.uint8[b+38]=y,this.uint32[v+10]=m,this.int16[x+22]=g,t}}ks.prototype.bytesPerElement=48,wi("StructArrayLayout2i2ui3ul3ui2f3ub1ul1i48",ks);class Ms extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.int16=new Int16Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer),this.uint32=new Uint32Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m,g,x,v,b,w,_,A,S,k,M,I){const z=this.length;return this.resize(z+1),this.emplace(z,t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m,g,x,v,b,w,_,A,S,k,M,I)}emplace(t,e,r,n,i,s,a,o,l,u,c,h,p,f,d,y,m,g,x,v,b,w,_,A,S,k,M,I,z){const P=32*t,C=16*t;return this.int16[P+0]=e,this.int16[P+1]=r,this.int16[P+2]=n,this.int16[P+3]=i,this.int16[P+4]=s,this.int16[P+5]=a,this.int16[P+6]=o,this.int16[P+7]=l,this.uint16[P+8]=u,this.uint16[P+9]=c,this.uint16[P+10]=h,this.uint16[P+11]=p,this.uint16[P+12]=f,this.uint16[P+13]=d,this.uint16[P+14]=y,this.uint16[P+15]=m,this.uint16[P+16]=g,this.uint16[P+17]=x,this.uint16[P+18]=v,this.uint16[P+19]=b,this.uint16[P+20]=w,this.uint16[P+21]=_,this.uint16[P+22]=A,this.uint32[C+12]=S,this.float32[C+13]=k,this.float32[C+14]=M,this.uint16[P+30]=I,this.uint16[P+31]=z,t}}Ms.prototype.bytesPerElement=64,wi("StructArrayLayout8i15ui1ul2f2ui64",Ms);class Is extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t){const e=this.length;return this.resize(e+1),this.emplace(e,t)}emplace(t,e){return this.float32[1*t+0]=e,t}}Is.prototype.bytesPerElement=4,wi("StructArrayLayout1f4",Is);class zs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e,r){const n=this.length;return this.resize(n+1),this.emplace(n,t,e,r)}emplace(t,e,r,n){const i=3*t;return this.uint16[6*t+0]=e,this.float32[i+1]=r,this.float32[i+2]=n,t}}zs.prototype.bytesPerElement=12,wi("StructArrayLayout1ui2f12",zs);class Ps extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint32=new Uint32Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e,r){const n=this.length;return this.resize(n+1),this.emplace(n,t,e,r)}emplace(t,e,r,n){const i=4*t;return this.uint32[2*t+0]=e,this.uint16[i+2]=r,this.uint16[i+3]=n,t}}Ps.prototype.bytesPerElement=8,wi("StructArrayLayout1ul2ui8",Ps);class Cs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t,e){const r=this.length;return this.resize(r+1),this.emplace(r,t,e)}emplace(t,e,r){const n=2*t;return this.uint16[n+0]=e,this.uint16[n+1]=r,t}}Cs.prototype.bytesPerElement=4,wi("StructArrayLayout2ui4",Cs);class Bs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.uint16=new Uint16Array(this.arrayBuffer);}emplaceBack(t){const e=this.length;return this.resize(e+1),this.emplace(e,t)}emplace(t,e){return this.uint16[1*t+0]=e,t}}Bs.prototype.bytesPerElement=2,wi("StructArrayLayout1ui2",Bs);class Vs extends os{_refreshViews(){this.uint8=new Uint8Array(this.arrayBuffer),this.float32=new Float32Array(this.arrayBuffer);}emplaceBack(t,e,r,n){const i=this.length;return this.resize(i+1),this.emplace(i,t,e,r,n)}emplace(t,e,r,n,i){const s=4*t;return this.float32[s+0]=e,this.float32[s+1]=r,this.float32[s+2]=n,this.float32[s+3]=i,t}}Vs.prototype.bytesPerElement=16,wi("StructArrayLayout4f16",Vs);class Es extends as{get anchorPointX(){return this._structArray.int16[this._pos2+0]}get anchorPointY(){return this._structArray.int16[this._pos2+1]}get x1(){return this._structArray.int16[this._pos2+2]}get y1(){return this._structArray.int16[this._pos2+3]}get x2(){return this._structArray.int16[this._pos2+4]}get y2(){return this._structArray.int16[this._pos2+5]}get featureIndex(){return this._structArray.uint32[this._pos4+3]}get sourceLayerIndex(){return this._structArray.uint16[this._pos2+8]}get bucketIndex(){return this._structArray.uint16[this._pos2+9]}get anchorPoint(){return new s(this.anchorPointX,this.anchorPointY)}}Es.prototype.size=20;class Fs extends bs{get(t){return new Es(this,t)}}wi("CollisionBoxArray",Fs);class Ts extends as{get anchorX(){return this._structArray.int16[this._pos2+0]}get anchorY(){return this._structArray.int16[this._pos2+1]}get glyphStartIndex(){return this._structArray.uint16[this._pos2+2]}get numGlyphs(){return this._structArray.uint16[this._pos2+3]}get vertexStartIndex(){return this._structArray.uint32[this._pos4+2]}get lineStartIndex(){return this._structArray.uint32[this._pos4+3]}get lineLength(){return this._structArray.uint32[this._pos4+4]}get segment(){return this._structArray.uint16[this._pos2+10]}get lowerSize(){return this._structArray.uint16[this._pos2+11]}get upperSize(){return this._structArray.uint16[this._pos2+12]}get lineOffsetX(){return this._structArray.float32[this._pos4+7]}get lineOffsetY(){return this._structArray.float32[this._pos4+8]}get writingMode(){return this._structArray.uint8[this._pos1+36]}get placedOrientation(){return this._structArray.uint8[this._pos1+37]}set placedOrientation(t){this._structArray.uint8[this._pos1+37]=t;}get hidden(){return this._structArray.uint8[this._pos1+38]}set hidden(t){this._structArray.uint8[this._pos1+38]=t;}get crossTileID(){return this._structArray.uint32[this._pos4+10]}set crossTileID(t){this._structArray.uint32[this._pos4+10]=t;}get associatedIconIndex(){return this._structArray.int16[this._pos2+22]}}Ts.prototype.size=48;class $s extends ks{get(t){return new Ts(this,t)}}wi("PlacedSymbolArray",$s);class Ls extends as{get anchorX(){return this._structArray.int16[this._pos2+0]}get anchorY(){return this._structArray.int16[this._pos2+1]}get rightJustifiedTextSymbolIndex(){return this._structArray.int16[this._pos2+2]}get centerJustifiedTextSymbolIndex(){return this._structArray.int16[this._pos2+3]}get leftJustifiedTextSymbolIndex(){return this._structArray.int16[this._pos2+4]}get verticalPlacedTextSymbolIndex(){return this._structArray.int16[this._pos2+5]}get placedIconSymbolIndex(){return this._structArray.int16[this._pos2+6]}get verticalPlacedIconSymbolIndex(){return this._structArray.int16[this._pos2+7]}get key(){return this._structArray.uint16[this._pos2+8]}get textBoxStartIndex(){return this._structArray.uint16[this._pos2+9]}get textBoxEndIndex(){return this._structArray.uint16[this._pos2+10]}get verticalTextBoxStartIndex(){return this._structArray.uint16[this._pos2+11]}get verticalTextBoxEndIndex(){return this._structArray.uint16[this._pos2+12]}get iconBoxStartIndex(){return this._structArray.uint16[this._pos2+13]}get iconBoxEndIndex(){return this._structArray.uint16[this._pos2+14]}get verticalIconBoxStartIndex(){return this._structArray.uint16[this._pos2+15]}get verticalIconBoxEndIndex(){return this._structArray.uint16[this._pos2+16]}get featureIndex(){return this._structArray.uint16[this._pos2+17]}get numHorizontalGlyphVertices(){return this._structArray.uint16[this._pos2+18]}get numVerticalGlyphVertices(){return this._structArray.uint16[this._pos2+19]}get numIconVertices(){return this._structArray.uint16[this._pos2+20]}get numVerticalIconVertices(){return this._structArray.uint16[this._pos2+21]}get useRuntimeCollisionCircles(){return this._structArray.uint16[this._pos2+22]}get crossTileID(){return this._structArray.uint32[this._pos4+12]}set crossTileID(t){this._structArray.uint32[this._pos4+12]=t;}get textBoxScale(){return this._structArray.float32[this._pos4+13]}get collisionCircleDiameter(){return this._structArray.float32[this._pos4+14]}get textAnchorOffsetStartIndex(){return this._structArray.uint16[this._pos2+30]}get textAnchorOffsetEndIndex(){return this._structArray.uint16[this._pos2+31]}}Ls.prototype.size=64;class Ds extends Ms{get(t){return new Ls(this,t)}}wi("SymbolInstanceArray",Ds);class Os extends Is{getoffsetX(t){return this.float32[1*t+0]}}wi("GlyphOffsetArray",Os);class js extends hs{getx(t){return this.int16[3*t+0]}gety(t){return this.int16[3*t+1]}gettileUnitDistanceFromAnchor(t){return this.int16[3*t+2]}}wi("SymbolLineVertexArray",js);class Rs extends as{get textAnchor(){return this._structArray.uint16[this._pos2+0]}get textOffset0(){return this._structArray.float32[this._pos4+1]}get textOffset1(){return this._structArray.float32[this._pos4+2]}}Rs.prototype.size=12;class Us extends zs{get(t){return new Rs(this,t)}}wi("TextAnchorOffsetArray",Us);class qs extends as{get featureIndex(){return this._structArray.uint32[this._pos4+0]}get sourceLayerIndex(){return this._structArray.uint16[this._pos2+2]}get bucketIndex(){return this._structArray.uint16[this._pos2+3]}}qs.prototype.size=8;class Ns extends Ps{get(t){return new qs(this,t)}}wi("FeatureIndexArray",Ns);class Zs extends cs{}class Gs extends cs{}class Ks extends cs{}class Xs extends fs{}class Hs extends ds{}class Ys extends ys{}class Js extends ms{}class Ws extends gs{}class Qs extends xs{}class ta extends vs{}class ea extends ws{}class ra extends As{}class na extends Ss{}class ia extends Cs{}const sa=ls([{name:"a_pos",components:2,type:"Int16"}],4),{members:aa}=sa;class oa{constructor(t=[]){this.segments=t;}prepareSegment(t,e,r,n){let i=this.segments[this.segments.length-1];return t>oa.MAX_VERTEX_ARRAY_LENGTH&&A(`Max vertices per segment is ${oa.MAX_VERTEX_ARRAY_LENGTH}: bucket requested ${t}`),(!i||i.vertexLength+t>oa.MAX_VERTEX_ARRAY_LENGTH||i.sortKey!==n)&&(i={vertexOffset:e.length,primitiveOffset:r.length,vertexLength:0,primitiveLength:0},void 0!==n&&(i.sortKey=n),this.segments.push(i)),i}get(){return this.segments}destroy(){for(const t of this.segments)for(const e in t.vaos)t.vaos[e].destroy();}static simpleSegment(t,e,r,n){return new oa([{vertexOffset:t,primitiveOffset:e,vertexLength:r,primitiveLength:n,vaos:{},sortKey:0}])}}function la(t,e){return 256*(t=y(Math.floor(t),0,255))+y(Math.floor(e),0,255)}oa.MAX_VERTEX_ARRAY_LENGTH=Math.pow(2,16)-1,wi("SegmentVector",oa);const ua=ls([{name:"a_pattern_from",components:4,type:"Uint16"},{name:"a_pattern_to",components:4,type:"Uint16"},{name:"a_pixel_ratio_from",components:1,type:"Uint16"},{name:"a_pixel_ratio_to",components:1,type:"Uint16"}]);var ca={exports:{}},ha={exports:{}};ha.exports=function(t,e){var r,n,i,s,a,o,l,u;for(n=t.length-(r=3&t.length),i=e,a=3432918353,o=461845907,u=0;u<n;)l=255&t.charCodeAt(u)|(255&t.charCodeAt(++u))<<8|(255&t.charCodeAt(++u))<<16|(255&t.charCodeAt(++u))<<24,++u,i=27492+(65535&(s=5*(65535&(i=(i^=l=(65535&(l=(l=(65535&l)*a+(((l>>>16)*a&65535)<<16)&4294967295)<<15|l>>>17))*o+(((l>>>16)*o&65535)<<16)&4294967295)<<13|i>>>19))+((5*(i>>>16)&65535)<<16)&4294967295))+((58964+(s>>>16)&65535)<<16);switch(l=0,r){case 3:l^=(255&t.charCodeAt(u+2))<<16;case 2:l^=(255&t.charCodeAt(u+1))<<8;case 1:i^=l=(65535&(l=(l=(65535&(l^=255&t.charCodeAt(u)))*a+(((l>>>16)*a&65535)<<16)&4294967295)<<15|l>>>17))*o+(((l>>>16)*o&65535)<<16)&4294967295;}return i^=t.length,i=2246822507*(65535&(i^=i>>>16))+((2246822507*(i>>>16)&65535)<<16)&4294967295,i=3266489909*(65535&(i^=i>>>13))+((3266489909*(i>>>16)&65535)<<16)&4294967295,(i^=i>>>16)>>>0};var pa=ha.exports,fa={exports:{}};fa.exports=function(t,e){for(var r,n=t.length,i=e^n,s=0;n>=4;)r=1540483477*(65535&(r=255&t.charCodeAt(s)|(255&t.charCodeAt(++s))<<8|(255&t.charCodeAt(++s))<<16|(255&t.charCodeAt(++s))<<24))+((1540483477*(r>>>16)&65535)<<16),i=1540483477*(65535&i)+((1540483477*(i>>>16)&65535)<<16)^(r=1540483477*(65535&(r^=r>>>24))+((1540483477*(r>>>16)&65535)<<16)),n-=4,++s;switch(n){case 3:i^=(255&t.charCodeAt(s+2))<<16;case 2:i^=(255&t.charCodeAt(s+1))<<8;case 1:i=1540483477*(65535&(i^=255&t.charCodeAt(s)))+((1540483477*(i>>>16)&65535)<<16);}return i=1540483477*(65535&(i^=i>>>13))+((1540483477*(i>>>16)&65535)<<16),(i^=i>>>15)>>>0};var da=pa,ya=fa.exports;ca.exports=da,ca.exports.murmur3=da,ca.exports.murmur2=ya;var ma=r(ca.exports);class ga{constructor(){this.ids=[],this.positions=[],this.indexed=!1;}add(t,e,r,n){this.ids.push(xa(t)),this.positions.push(e,r,n);}getPositions(t){if(!this.indexed)throw new Error("Trying to get index, but feature positions are not indexed");const e=xa(t);let r=0,n=this.ids.length-1;for(;r<n;){const t=r+n>>1;this.ids[t]>=e?n=t:r=t+1;}const i=[];for(;this.ids[r]===e;)i.push({index:this.positions[3*r],start:this.positions[3*r+1],end:this.positions[3*r+2]}),r++;return i}static serialize(t,e){const r=new Float64Array(t.ids),n=new Uint32Array(t.positions);return va(r,n,0,r.length-1),e&&e.push(r.buffer,n.buffer),{ids:r,positions:n}}static deserialize(t){const e=new ga;return e.ids=t.ids,e.positions=t.positions,e.indexed=!0,e}}function xa(t){const e=+t;return !isNaN(e)&&e<=Number.MAX_SAFE_INTEGER?e:ma(String(t))}function va(t,e,r,n){for(;r<n;){const i=t[r+n>>1];let s=r-1,a=n+1;for(;;){do{s++;}while(t[s]<i);do{a--;}while(t[a]>i);if(s>=a)break;ba(t,s,a),ba(e,3*s,3*a),ba(e,3*s+1,3*a+1),ba(e,3*s+2,3*a+2);}a-r<n-a?(va(t,e,r,a),r=a+1):(va(t,e,a+1,n),n=a);}}function ba(t,e,r){const n=t[e];t[e]=t[r],t[r]=n;}wi("FeaturePositionMap",ga);class wa{constructor(t,e){this.gl=t.gl,this.location=e;}}class _a extends wa{constructor(t,e){super(t,e),this.current=0;}set(t){this.current!==t&&(this.current=t,this.gl.uniform1f(this.location,t));}}class Aa extends wa{constructor(t,e){super(t,e),this.current=[0,0,0,0];}set(t){t[0]===this.current[0]&&t[1]===this.current[1]&&t[2]===this.current[2]&&t[3]===this.current[3]||(this.current=t,this.gl.uniform4f(this.location,t[0],t[1],t[2],t[3]));}}class Sa extends wa{constructor(t,e){super(t,e),this.current=Kt.transparent;}set(t){t.r===this.current.r&&t.g===this.current.g&&t.b===this.current.b&&t.a===this.current.a||(this.current=t,this.gl.uniform4f(this.location,t.r,t.g,t.b,t.a));}}const ka=new Float32Array(16);function Ma(t){return [la(255*t.r,255*t.g),la(255*t.b,255*t.a)]}class Ia{constructor(t,e,r){this.value=t,this.uniformNames=e.map((t=>`u_${t}`)),this.type=r;}setUniform(t,e,r){t.set(r.constantOr(this.value));}getBinding(t,e,r){return "color"===this.type?new Sa(t,e):new _a(t,e)}}class za{constructor(t,e){this.uniformNames=e.map((t=>`u_${t}`)),this.patternFrom=null,this.patternTo=null,this.pixelRatioFrom=1,this.pixelRatioTo=1;}setConstantPatternPositions(t,e){this.pixelRatioFrom=e.pixelRatio,this.pixelRatioTo=t.pixelRatio,this.patternFrom=e.tlbr,this.patternTo=t.tlbr;}setUniform(t,e,r,n){const i="u_pattern_to"===n?this.patternTo:"u_pattern_from"===n?this.patternFrom:"u_pixel_ratio_to"===n?this.pixelRatioTo:"u_pixel_ratio_from"===n?this.pixelRatioFrom:null;i&&t.set(i);}getBinding(t,e,r){return "u_pattern"===r.substr(0,9)?new Aa(t,e):new _a(t,e)}}class Pa{constructor(t,e,r,n){this.expression=t,this.type=r,this.maxValue=0,this.paintVertexAttributes=e.map((t=>({name:`a_${t}`,type:"Float32",components:"color"===r?2:1,offset:0}))),this.paintVertexArray=new n;}populatePaintArray(t,e,r,n,i){const s=this.paintVertexArray.length,a=this.expression.evaluate(new Ui(0),e,{},n,[],i);this.paintVertexArray.resize(t),this._setPaintValue(s,t,a);}updatePaintArray(t,e,r,n){const i=this.expression.evaluate({zoom:0},r,n);this._setPaintValue(t,e,i);}_setPaintValue(t,e,r){if("color"===this.type){const n=Ma(r);for(let r=t;r<e;r++)this.paintVertexArray.emplace(r,n[0],n[1]);}else {for(let n=t;n<e;n++)this.paintVertexArray.emplace(n,r);this.maxValue=Math.max(this.maxValue,Math.abs(r));}}upload(t){this.paintVertexArray&&this.paintVertexArray.arrayBuffer&&(this.paintVertexBuffer&&this.paintVertexBuffer.buffer?this.paintVertexBuffer.updateData(this.paintVertexArray):this.paintVertexBuffer=t.createVertexBuffer(this.paintVertexArray,this.paintVertexAttributes,this.expression.isStateDependent));}destroy(){this.paintVertexBuffer&&this.paintVertexBuffer.destroy();}}class Ca{constructor(t,e,r,n,i,s){this.expression=t,this.uniformNames=e.map((t=>`u_${t}_t`)),this.type=r,this.useIntegerZoom=n,this.zoom=i,this.maxValue=0,this.paintVertexAttributes=e.map((t=>({name:`a_${t}`,type:"Float32",components:"color"===r?4:2,offset:0}))),this.paintVertexArray=new s;}populatePaintArray(t,e,r,n,i){const s=this.expression.evaluate(new Ui(this.zoom),e,{},n,[],i),a=this.expression.evaluate(new Ui(this.zoom+1),e,{},n,[],i),o=this.paintVertexArray.length;this.paintVertexArray.resize(t),this._setPaintValue(o,t,s,a);}updatePaintArray(t,e,r,n){const i=this.expression.evaluate({zoom:this.zoom},r,n),s=this.expression.evaluate({zoom:this.zoom+1},r,n);this._setPaintValue(t,e,i,s);}_setPaintValue(t,e,r,n){if("color"===this.type){const i=Ma(r),s=Ma(n);for(let r=t;r<e;r++)this.paintVertexArray.emplace(r,i[0],i[1],s[0],s[1]);}else {for(let i=t;i<e;i++)this.paintVertexArray.emplace(i,r,n);this.maxValue=Math.max(this.maxValue,Math.abs(r),Math.abs(n));}}upload(t){this.paintVertexArray&&this.paintVertexArray.arrayBuffer&&(this.paintVertexBuffer&&this.paintVertexBuffer.buffer?this.paintVertexBuffer.updateData(this.paintVertexArray):this.paintVertexBuffer=t.createVertexBuffer(this.paintVertexArray,this.paintVertexAttributes,this.expression.isStateDependent));}destroy(){this.paintVertexBuffer&&this.paintVertexBuffer.destroy();}setUniform(t,e){const r=this.useIntegerZoom?Math.floor(e.zoom):e.zoom,n=y(this.expression.interpolationFactor(r,this.zoom,this.zoom+1),0,1);t.set(n);}getBinding(t,e,r){return new _a(t,e)}}class Ba{constructor(t,e,r,n,i,s){this.expression=t,this.type=e,this.useIntegerZoom=r,this.zoom=n,this.layerId=s,this.zoomInPaintVertexArray=new i,this.zoomOutPaintVertexArray=new i;}populatePaintArray(t,e,r){const n=this.zoomInPaintVertexArray.length;this.zoomInPaintVertexArray.resize(t),this.zoomOutPaintVertexArray.resize(t),this._setPaintValues(n,t,e.patterns&&e.patterns[this.layerId],r);}updatePaintArray(t,e,r,n,i){this._setPaintValues(t,e,r.patterns&&r.patterns[this.layerId],i);}_setPaintValues(t,e,r,n){if(!n||!r)return;const{min:i,mid:s,max:a}=r,o=n[i],l=n[s],u=n[a];if(o&&l&&u)for(let r=t;r<e;r++)this.zoomInPaintVertexArray.emplace(r,l.tl[0],l.tl[1],l.br[0],l.br[1],o.tl[0],o.tl[1],o.br[0],o.br[1],l.pixelRatio,o.pixelRatio),this.zoomOutPaintVertexArray.emplace(r,l.tl[0],l.tl[1],l.br[0],l.br[1],u.tl[0],u.tl[1],u.br[0],u.br[1],l.pixelRatio,u.pixelRatio);}upload(t){this.zoomInPaintVertexArray&&this.zoomInPaintVertexArray.arrayBuffer&&this.zoomOutPaintVertexArray&&this.zoomOutPaintVertexArray.arrayBuffer&&(this.zoomInPaintVertexBuffer=t.createVertexBuffer(this.zoomInPaintVertexArray,ua.members,this.expression.isStateDependent),this.zoomOutPaintVertexBuffer=t.createVertexBuffer(this.zoomOutPaintVertexArray,ua.members,this.expression.isStateDependent));}destroy(){this.zoomOutPaintVertexBuffer&&this.zoomOutPaintVertexBuffer.destroy(),this.zoomInPaintVertexBuffer&&this.zoomInPaintVertexBuffer.destroy();}}class Va{constructor(t,e,r){this.binders={},this._buffers=[];const n=[];for(const i in t.paint._values){if(!r(i))continue;const s=t.paint.get(i);if(!(s instanceof Hi&&an(s.property.specification)))continue;const a=Fa(i,t.type),o=s.value,l=s.property.specification.type,u=s.property.useIntegerZoom,c=s.property.specification["property-type"],h="cross-faded"===c||"cross-faded-data-driven"===c;if("constant"===o.kind)this.binders[i]=h?new za(o.value,a):new Ia(o.value,a,l),n.push(`/u_${i}`);else if("source"===o.kind||h){const r=Ta(i,l,"source");this.binders[i]=h?new Ba(o,l,u,e,r,t.id):new Pa(o,a,l,r),n.push(`/a_${i}`);}else {const t=Ta(i,l,"composite");this.binders[i]=new Ca(o,a,l,u,e,t),n.push(`/z_${i}`);}}this.cacheKey=n.sort().join("");}getMaxValue(t){const e=this.binders[t];return e instanceof Pa||e instanceof Ca?e.maxValue:0}populatePaintArrays(t,e,r,n,i){for(const s in this.binders){const a=this.binders[s];(a instanceof Pa||a instanceof Ca||a instanceof Ba)&&a.populatePaintArray(t,e,r,n,i);}}setConstantPatternPositions(t,e){for(const r in this.binders){const n=this.binders[r];n instanceof za&&n.setConstantPatternPositions(t,e);}}updatePaintArrays(t,e,r,n,i){let s=!1;for(const a in t){const o=e.getPositions(a);for(const e of o){const o=r.feature(e.index);for(const r in this.binders){const l=this.binders[r];if((l instanceof Pa||l instanceof Ca||l instanceof Ba)&&!0===l.expression.isStateDependent){const u=n.paint.get(r);l.expression=u.value,l.updatePaintArray(e.start,e.end,o,t[a],i),s=!0;}}}}return s}defines(){const t=[];for(const e in this.binders){const r=this.binders[e];(r instanceof Ia||r instanceof za)&&t.push(...r.uniformNames.map((t=>`#define HAS_UNIFORM_${t}`)));}return t}getBinderAttributes(){const t=[];for(const e in this.binders){const r=this.binders[e];if(r instanceof Pa||r instanceof Ca)for(let e=0;e<r.paintVertexAttributes.length;e++)t.push(r.paintVertexAttributes[e].name);else if(r instanceof Ba)for(let e=0;e<ua.members.length;e++)t.push(ua.members[e].name);}return t}getBinderUniforms(){const t=[];for(const e in this.binders){const r=this.binders[e];if(r instanceof Ia||r instanceof za||r instanceof Ca)for(const e of r.uniformNames)t.push(e);}return t}getPaintVertexBuffers(){return this._buffers}getUniforms(t,e){const r=[];for(const n in this.binders){const i=this.binders[n];if(i instanceof Ia||i instanceof za||i instanceof Ca)for(const s of i.uniformNames)if(e[s]){const a=i.getBinding(t,e[s],s);r.push({name:s,property:n,binding:a});}}return r}setUniforms(t,e,r,n){for(const{name:t,property:i,binding:s}of e)this.binders[i].setUniform(s,n,r.get(i),t);}updatePaintBuffers(t){this._buffers=[];for(const e in this.binders){const r=this.binders[e];if(t&&r instanceof Ba){const e=2===t.fromScale?r.zoomInPaintVertexBuffer:r.zoomOutPaintVertexBuffer;e&&this._buffers.push(e);}else (r instanceof Pa||r instanceof Ca)&&r.paintVertexBuffer&&this._buffers.push(r.paintVertexBuffer);}}upload(t){for(const e in this.binders){const r=this.binders[e];(r instanceof Pa||r instanceof Ca||r instanceof Ba)&&r.upload(t);}this.updatePaintBuffers();}destroy(){for(const t in this.binders){const e=this.binders[t];(e instanceof Pa||e instanceof Ca||e instanceof Ba)&&e.destroy();}}}class Ea{constructor(t,e,r=(()=>!0)){this.programConfigurations={};for(const n of t)this.programConfigurations[n.id]=new Va(n,e,r);this.needsUpload=!1,this._featureMap=new ga,this._bufferOffset=0;}populatePaintArrays(t,e,r,n,i,s){for(const r in this.programConfigurations)this.programConfigurations[r].populatePaintArrays(t,e,n,i,s);void 0!==e.id&&this._featureMap.add(e.id,r,this._bufferOffset,t),this._bufferOffset=t,this.needsUpload=!0;}updatePaintArrays(t,e,r,n){for(const i of r)this.needsUpload=this.programConfigurations[i.id].updatePaintArrays(t,this._featureMap,e,i,n)||this.needsUpload;}get(t){return this.programConfigurations[t]}upload(t){if(this.needsUpload){for(const e in this.programConfigurations)this.programConfigurations[e].upload(t);this.needsUpload=!1;}}destroy(){for(const t in this.programConfigurations)this.programConfigurations[t].destroy();}}function Fa(t,e){return {"text-opacity":["opacity"],"icon-opacity":["opacity"],"text-color":["fill_color"],"icon-color":["fill_color"],"text-halo-color":["halo_color"],"icon-halo-color":["halo_color"],"text-halo-blur":["halo_blur"],"icon-halo-blur":["halo_blur"],"text-halo-width":["halo_width"],"icon-halo-width":["halo_width"],"line-gap-width":["gapwidth"],"line-pattern":["pattern_to","pattern_from","pixel_ratio_to","pixel_ratio_from"],"fill-pattern":["pattern_to","pattern_from","pixel_ratio_to","pixel_ratio_from"],"fill-extrusion-pattern":["pattern_to","pattern_from","pixel_ratio_to","pixel_ratio_from"]}[t]||[t.replace(`${e}-`,"").replace(/-/g,"_")]}function Ta(t,e,r){const n={color:{source:ys,composite:Vs},number:{source:Is,composite:ys}},i=function(t){return {"line-pattern":{source:Js,composite:Js},"fill-pattern":{source:Js,composite:Js},"fill-extrusion-pattern":{source:Js,composite:Js}}[t]}(t);return 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t=e.evaluate({zoom:n-1},r,{},i.availableImages),o=e.evaluate({zoom:n},r,{},i.availableImages),l=e.evaluate({zoom:n+1},r,{},i.availableImages);t=t&&t.name?t.name:t,o=o&&o.name?o.name:o,l=l&&l.name?l.name:l,s[t]=!0,s[o]=!0,s[l]=!0,r.patterns[a.id]={min:t,mid:o,max:l};}}return r}class sl{constructor(t){this.zoom=t.zoom,this.overscaling=t.overscaling,this.layers=t.layers,this.layerIds=this.layers.map((t=>t.id)),this.index=t.index,this.hasPattern=!1,this.patternFeatures=[],this.layoutVertexArray=new Ks,this.indexArray=new na,this.indexArray2=new ia,this.programConfigurations=new Ea(t.layers,t.zoom),this.segments=new oa,this.segments2=new oa,this.stateDependentLayerIds=this.layers.filter((t=>t.isStateDependent())).map((t=>t.id));}populate(t,e,r){this.hasPattern=nl("fill",this.layers,e);const n=this.layers[0].layout.get("fill-sort-key"),i=!n.isConstant(),s=[];for(const{feature:a,id:o,index:l,sourceLayerIndex:u}of t){const t=this.layers[0]._featureFilter.needGeometry,c=ja(a,t);if(!this.layers[0]._featureFilter.filter(new Ui(this.zoom),c,r))continue;const h=i?n.evaluate(c,{},r,e.availableImages):void 0,p={id:o,properties:a.properties,type:a.type,sourceLayerIndex:u,index:l,geometry:t?c.geometry:Oa(a),patterns:{},sortKey:h};s.push(p);}i&&s.sort(((t,e)=>t.sortKey-e.sortKey));for(const n of s){const{geometry:i,index:s,sourceLayerIndex:a}=n;if(this.hasPattern){const t=il("fill",this.layers,n,this.zoom,e);this.patternFeatures.push(t);}else this.addFeature(n,i,s,r,{});e.featureIndex.insert(t[s].feature,i,s,a,this.index);}}update(t,e,r){this.stateDependentLayers.length&&this.programConfigurations.updatePaintArrays(t,e,this.stateDependentLayers,r);}addFeatures(t,e,r){for(const t of this.patternFeatures)this.addFeature(t,t.geometry,t.index,e,r);}isEmpty(){return 0===this.layoutVertexArray.length}uploadPending(){return !this.uploaded||this.programConfigurations.needsUpload}upload(t){this.uploaded||(this.layoutVertexBuffer=t.createVertexBuffer(this.layoutVertexArray,Bo),this.indexBuffer=t.createIndexBuffer(this.indexArray),this.indexBuffer2=t.createIndexBuffer(this.indexArray2)),this.programConfigurations.upload(t),this.uploaded=!0;}destroy(){this.layoutVertexBuffer&&(this.layoutVertexBuffer.destroy(),this.indexBuffer.destroy(),this.indexBuffer2.destroy(),this.programConfigurations.destroy(),this.segments.destroy(),this.segments2.destroy());}addFeature(t,e,r,n,i){for(const t of xr(e,500)){let e=0;for(const r of t)e+=r.length;const r=this.segments.prepareSegment(e,this.layoutVertexArray,this.indexArray),n=r.vertexLength,i=[],s=[];for(const e of t){if(0===e.length)continue;e!==t[0]&&s.push(i.length/2);const r=this.segments2.prepareSegment(e.length,this.layoutVertexArray,this.indexArray2),n=r.vertexLength;this.layoutVertexArray.emplaceBack(e[0].x,e[0].y),this.indexArray2.emplaceBack(n+e.length-1,n),i.push(e[0].x),i.push(e[0].y);for(let t=1;t<e.length;t++)this.layoutVertexArray.emplaceBack(e[t].x,e[t].y),this.indexArray2.emplaceBack(n+t-1,n+t),i.push(e[t].x),i.push(e[t].y);r.vertexLength+=e.length,r.primitiveLength+=e.length;}const a=Vo(i,s);for(let t=0;t<a.length;t+=3)this.indexArray.emplaceBack(n+a[t],n+a[t+1],n+a[t+2]);r.vertexLength+=e,r.primitiveLength+=a.length/3;}this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length,t,r,i,n);}}let al,ol;wi("FillBucket",sl,{omit:["layers","patternFeatures"]});var ll={get paint(){return ol=ol||new rs({"fill-antialias":new Ji(G.paint_fill["fill-antialias"]),"fill-opacity":new Wi(G.paint_fill["fill-opacity"]),"fill-color":new Wi(G.paint_fill["fill-color"]),"fill-outline-color":new Wi(G.paint_fill["fill-outline-color"]),"fill-translate":new Ji(G.paint_fill["fill-translate"]),"fill-translate-anchor":new Ji(G.paint_fill["fill-translate-anchor"]),"fill-pattern":new Qi(G.paint_fill["fill-pattern"])})},get layout(){return al=al||new rs({"fill-sort-key":new Wi(G.layout_fill["fill-sort-key"])})}};class ul extends is{constructor(t){super(t,ll);}recalculate(t,e){super.recalculate(t,e);const r=this.paint._values["fill-outline-color"];"constant"===r.value.kind&&void 0===r.value.value&&(this.paint._values["fill-outline-color"]=this.paint._values["fill-color"]);}createBucket(t){return new sl(t)}queryRadius(){return eo(this.paint.get("fill-translate"))}queryIntersectsFeature(t,e,r,n,i,s,a){return Za(ro(t,this.paint.get("fill-translate"),this.paint.get("fill-translate-anchor"),s.angle,a),n)}isTileClipped(){return !0}}const cl=ls([{name:"a_pos",components:2,type:"Int16"},{name:"a_normal_ed",components:4,type:"Int16"}],4),hl=ls([{name:"a_centroid",components:2,type:"Int16"}],4),{members:pl}=cl;var fl={},dl=n,yl=ml;function ml(t,e,r,n,i){this.properties={},this.extent=r,this.type=0,this._pbf=t,this._geometry=-1,this._keys=n,this._values=i,t.readFields(gl,this,e);}function gl(t,e,r){1==t?e.id=r.readVarint():2==t?function(t,e){for(var r=t.readVarint()+t.pos;t.pos<r;){var n=e._keys[t.readVarint()],i=e._values[t.readVarint()];e.properties[n]=i;}}(r,e):3==t?e.type=r.readVarint():4==t&&(e._geometry=r.pos);}function xl(t){for(var e,r,n=0,i=0,s=t.length,a=s-1;i<s;a=i++)n+=((r=t[a]).x-(e=t[i]).x)*(e.y+r.y);return n}ml.types=["Unknown","Point","LineString","Polygon"],ml.prototype.loadGeometry=function(){var t=this._pbf;t.pos=this._geometry;for(var e,r=t.readVarint()+t.pos,n=1,i=0,s=0,a=0,o=[];t.pos<r;){if(i<=0){var l=t.readVarint();n=7&l,i=l>>3;}if(i--,1===n||2===n)s+=t.readSVarint(),a+=t.readSVarint(),1===n&&(e&&o.push(e),e=[]),e.push(new dl(s,a));else {if(7!==n)throw new Error("unknown command "+n);e&&e.push(e[0].clone());}}return e&&o.push(e),o},ml.prototype.bbox=function(){var t=this._pbf;t.pos=this._geometry;for(var e=t.readVarint()+t.pos,r=1,n=0,i=0,s=0,a=1/0,o=-1/0,l=1/0,u=-1/0;t.pos<e;){if(n<=0){var c=t.readVarint();r=7&c,n=c>>3;}if(n--,1===r||2===r)(i+=t.readSVarint())<a&&(a=i),i>o&&(o=i),(s+=t.readSVarint())<l&&(l=s),s>u&&(u=s);else if(7!==r)throw new Error("unknown command "+r)}return [a,l,o,u]},ml.prototype.toGeoJSON=function(t,e,r){var n,i,s=this.extent*Math.pow(2,r),a=this.extent*t,o=this.extent*e,l=this.loadGeometry(),u=ml.types[this.type];function c(t){for(var e=0;e<t.length;e++){var r=t[e];t[e]=[360*(r.x+a)/s-180,360/Math.PI*Math.atan(Math.exp((180-360*(r.y+o)/s)*Math.PI/180))-90];}}switch(this.type){case 1:var h=[];for(n=0;n<l.length;n++)h[n]=l[n][0];c(l=h);break;case 2:for(n=0;n<l.length;n++)c(l[n]);break;case 3:for(l=function(t){var e=t.length;if(e<=1)return [t];for(var r,n,i=[],s=0;s<e;s++){var a=xl(t[s]);0!==a&&(void 0===n&&(n=a<0),n===a<0?(r&&i.push(r),r=[t[s]]):r.push(t[s]));}return r&&i.push(r),i}(l),n=0;n<l.length;n++)for(i=0;i<l[n].length;i++)c(l[n][i]);}1===l.length?l=l[0]:u="Multi"+u;var p={type:"Feature",geometry:{type:u,coordinates:l},properties:this.properties};return "id"in this&&(p.id=this.id),p};var vl=yl,bl=wl;function wl(t,e){this.version=1,this.name=null,this.extent=4096,this.length=0,this._pbf=t,this._keys=[],this._values=[],this._features=[],t.readFields(_l,this,e),this.length=this._features.length;}function _l(t,e,r){15===t?e.version=r.readVarint():1===t?e.name=r.readString():5===t?e.extent=r.readVarint():2===t?e._features.push(r.pos):3===t?e._keys.push(r.readString()):4===t&&e._values.push(function(t){for(var e=null,r=t.readVarint()+t.pos;t.pos<r;){var n=t.readVarint()>>3;e=1===n?t.readString():2===n?t.readFloat():3===n?t.readDouble():4===n?t.readVarint64():5===n?t.readVarint():6===n?t.readSVarint():7===n?t.readBoolean():null;}return e}(r));}wl.prototype.feature=function(t){if(t<0||t>=this._features.length)throw new Error("feature index out of bounds");this._pbf.pos=this._features[t];var e=this._pbf.readVarint()+this._pbf.pos;return new vl(this._pbf,e,this.extent,this._keys,this._values)};var Al=bl;function Sl(t,e,r){if(3===t){var n=new Al(r,r.readVarint()+r.pos);n.length&&(e[n.name]=n);}}fl.VectorTile=function(t,e){this.layers=t.readFields(Sl,{},e);},fl.VectorTileFeature=yl,fl.VectorTileLayer=bl;const kl=fl.VectorTileFeature.types,Ml=Math.pow(2,13);function Il(t,e,r,n,i,s,a,o){t.emplaceBack(e,r,2*Math.floor(n*Ml)+a,i*Ml*2,s*Ml*2,Math.round(o));}class zl{constructor(t){this.zoom=t.zoom,this.overscaling=t.overscaling,this.layers=t.layers,this.layerIds=this.layers.map((t=>t.id)),this.index=t.index,this.hasPattern=!1,this.layoutVertexArray=new Xs,this.centroidVertexArray=new Zs,this.indexArray=new na,this.programConfigurations=new Ea(t.layers,t.zoom),this.segments=new oa,this.stateDependentLayerIds=this.layers.filter((t=>t.isStateDependent())).map((t=>t.id));}populate(t,e,r){this.features=[],this.hasPattern=nl("fill-extrusion",this.layers,e);for(const{feature:n,id:i,index:s,sourceLayerIndex:a}of t){const t=this.layers[0]._featureFilter.needGeometry,o=ja(n,t);if(!this.layers[0]._featureFilter.filter(new Ui(this.zoom),o,r))continue;const l={id:i,sourceLayerIndex:a,index:s,geometry:t?o.geometry:Oa(n),properties:n.properties,type:n.type,patterns:{}};this.hasPattern?this.features.push(il("fill-extrusion",this.layers,l,this.zoom,e)):this.addFeature(l,l.geometry,s,r,{}),e.featureIndex.insert(n,l.geometry,s,a,this.index,!0);}}addFeatures(t,e,r){for(const t of this.features){const{geometry:n}=t;this.addFeature(t,n,t.index,e,r);}}update(t,e,r){this.stateDependentLayers.length&&this.programConfigurations.updatePaintArrays(t,e,this.stateDependentLayers,r);}isEmpty(){return 0===this.layoutVertexArray.length&&0===this.centroidVertexArray.length}uploadPending(){return !this.uploaded||this.programConfigurations.needsUpload}upload(t){this.uploaded||(this.layoutVertexBuffer=t.createVertexBuffer(this.layoutVertexArray,pl),this.centroidVertexBuffer=t.createVertexBuffer(this.centroidVertexArray,hl.members,!0),this.indexBuffer=t.createIndexBuffer(this.indexArray)),this.programConfigurations.upload(t),this.uploaded=!0;}destroy(){this.layoutVertexBuffer&&(this.layoutVertexBuffer.destroy(),this.indexBuffer.destroy(),this.programConfigurations.destroy(),this.segments.destroy(),this.centroidVertexBuffer.destroy());}addFeature(t,e,r,n,i){for(const r of xr(e,500)){const e={x:0,y:0,vertexCount:0};let n=0;for(const t of r)n+=t.length;let i=this.segments.prepareSegment(4,this.layoutVertexArray,this.indexArray);for(const t of r){if(0===t.length)continue;if(Cl(t))continue;let r=0;for(let n=0;n<t.length;n++){const s=t[n];if(n>=1){const a=t[n-1];if(!Pl(s,a)){i.vertexLength+4>oa.MAX_VERTEX_ARRAY_LENGTH&&(i=this.segments.prepareSegment(4,this.layoutVertexArray,this.indexArray));const t=s.sub(a)._perp()._unit(),n=a.dist(s);r+n>32768&&(r=0),Il(this.layoutVertexArray,s.x,s.y,t.x,t.y,0,0,r),Il(this.layoutVertexArray,s.x,s.y,t.x,t.y,0,1,r),e.x+=2*s.x,e.y+=2*s.y,e.vertexCount+=2,r+=n,Il(this.layoutVertexArray,a.x,a.y,t.x,t.y,0,0,r),Il(this.layoutVertexArray,a.x,a.y,t.x,t.y,0,1,r),e.x+=2*a.x,e.y+=2*a.y,e.vertexCount+=2;const o=i.vertexLength;this.indexArray.emplaceBack(o,o+2,o+1),this.indexArray.emplaceBack(o+1,o+2,o+3),i.vertexLength+=4,i.primitiveLength+=2;}}}}if(i.vertexLength+n>oa.MAX_VERTEX_ARRAY_LENGTH&&(i=this.segments.prepareSegment(n,this.layoutVertexArray,this.indexArray)),"Polygon"!==kl[t.type])continue;const s=[],a=[],o=i.vertexLength;for(const t of r)if(0!==t.length){t!==r[0]&&a.push(s.length/2);for(let r=0;r<t.length;r++){const n=t[r];Il(this.layoutVertexArray,n.x,n.y,0,0,1,1,0),e.x+=n.x,e.y+=n.y,e.vertexCount+=1,s.push(n.x),s.push(n.y);}}const l=Vo(s,a);for(let t=0;t<l.length;t+=3)this.indexArray.emplaceBack(o+l[t],o+l[t+2],o+l[t+1]);i.primitiveLength+=l.length/3,i.vertexLength+=n;for(let t=0;t<e.vertexCount;t++){const t=Math.floor(e.x/e.vertexCount),r=Math.floor(e.y/e.vertexCount);this.centroidVertexArray.emplaceBack(t,r);}}this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length,t,r,i,n);}}function Pl(t,e){return t.x===e.x&&(t.x<0||t.x>$a)||t.y===e.y&&(t.y<0||t.y>$a)}function Cl(t){return t.every((t=>t.x<0))||t.every((t=>t.x>$a))||t.every((t=>t.y<0))||t.every((t=>t.y>$a))}let Bl;wi("FillExtrusionBucket",zl,{omit:["layers","features"]});var Vl={get paint(){return Bl=Bl||new rs({"fill-extrusion-opacity":new Ji(G["paint_fill-extrusion"]["fill-extrusion-opacity"]),"fill-extrusion-color":new Wi(G["paint_fill-extrusion"]["fill-extrusion-color"]),"fill-extrusion-translate":new Ji(G["paint_fill-extrusion"]["fill-extrusion-translate"]),"fill-extrusion-translate-anchor":new Ji(G["paint_fill-extrusion"]["fill-extrusion-translate-anchor"]),"fill-extrusion-pattern":new Qi(G["paint_fill-extrusion"]["fill-extrusion-pattern"]),"fill-extrusion-height":new Wi(G["paint_fill-extrusion"]["fill-extrusion-height"]),"fill-extrusion-base":new Wi(G["paint_fill-extrusion"]["fill-extrusion-base"]),"fill-extrusion-vertical-gradient":new Ji(G["paint_fill-extrusion"]["fill-extrusion-vertical-gradient"])})}};class El extends is{constructor(t){super(t,Vl);}createBucket(t){return new zl(t)}queryRadius(){return eo(this.paint.get("fill-extrusion-translate"))}is3D(){return !0}queryIntersectsFeature(t,e,r,n,i,a,o,l){const u=ro(t,this.paint.get("fill-extrusion-translate"),this.paint.get("fill-extrusion-translate-anchor"),a.angle,o),c=this.paint.get("fill-extrusion-height").evaluate(e,r),h=this.paint.get("fill-extrusion-base").evaluate(e,r),p=function(t,e,r,n){const i=[];for(const r of t){const t=[r.x,r.y,0,1];po(t,t,e),i.push(new s(t[0]/t[3],t[1]/t[3]));}return i}(u,l),f=function(t,e,r,n){const i=[],a=[],o=n[8]*e,l=n[9]*e,u=n[10]*e,c=n[11]*e,h=n[8]*r,p=n[9]*r,f=n[10]*r,d=n[11]*r;for(const e of t){const t=[],r=[];for(const i of e){const e=i.x,a=i.y,y=n[0]*e+n[4]*a+n[12],m=n[1]*e+n[5]*a+n[13],g=n[2]*e+n[6]*a+n[14],x=n[3]*e+n[7]*a+n[15],v=g+u,b=x+c,w=y+h,_=m+p,A=g+f,S=x+d,k=new s((y+o)/b,(m+l)/b);k.z=v/b,t.push(k);const M=new s(w/S,_/S);M.z=A/S,r.push(M);}i.push(t),a.push(r);}return [i,a]}(n,h,c,l);return function(t,e,r){let n=1/0;Za(r,e)&&(n=Tl(r,e[0]));for(let i=0;i<e.length;i++){const s=e[i],a=t[i];for(let t=0;t<s.length-1;t++){const e=s[t],i=[e,s[t+1],a[t+1],a[t],e];qa(r,i)&&(n=Math.min(n,Tl(r,i)));}}return n!==1/0&&n}(f[0],f[1],p)}}function Fl(t,e){return t.x*e.x+t.y*e.y}function Tl(t,e){if(1===t.length){let r=0;const n=e[r++];let i;for(;!i||n.equals(i);)if(i=e[r++],!i)return 1/0;for(;r<e.length;r++){const s=e[r],a=t[0],o=i.sub(n),l=s.sub(n),u=a.sub(n),c=Fl(o,o),h=Fl(o,l),p=Fl(l,l),f=Fl(u,o),d=Fl(u,l),y=c*p-h*h,m=(p*f-h*d)/y,g=(c*d-h*f)/y,x=n.z*(1-m-g)+i.z*m+s.z*g;if(isFinite(x))return x}return 1/0}{let t=1/0;for(const r of e)t=Math.min(t,r.z);return t}}const $l=ls([{name:"a_pos_normal",components:2,type:"Int16"},{name:"a_data",components:4,type:"Uint8"}],4),{members:Ll}=$l,Dl=ls([{name:"a_uv_x",components:1,type:"Float32"},{name:"a_split_index",components:1,type:"Float32"}]),{members:Ol}=Dl,jl=fl.VectorTileFeature.types,Rl=Math.cos(Math.PI/180*37.5),Ul=Math.pow(2,14)/.5;class ql{constructor(t){this.zoom=t.zoom,this.overscaling=t.overscaling,this.layers=t.layers,this.layerIds=this.layers.map((t=>t.id)),this.index=t.index,this.hasPattern=!1,this.patternFeatures=[],this.lineClipsArray=[],this.gradients={},this.layers.forEach((t=>{this.gradients[t.id]={};})),this.layoutVertexArray=new Hs,this.layoutVertexArray2=new Ys,this.indexArray=new na,this.programConfigurations=new Ea(t.layers,t.zoom),this.segments=new oa,this.maxLineLength=0,this.stateDependentLayerIds=this.layers.filter((t=>t.isStateDependent())).map((t=>t.id));}populate(t,e,r){this.hasPattern=nl("line",this.layers,e);const n=this.layers[0].layout.get("line-sort-key"),i=!n.isConstant(),s=[];for(const{feature:e,id:a,index:o,sourceLayerIndex:l}of t){const t=this.layers[0]._featureFilter.needGeometry,u=ja(e,t);if(!this.layers[0]._featureFilter.filter(new Ui(this.zoom),u,r))continue;const c=i?n.evaluate(u,{},r):void 0,h={id:a,properties:e.properties,type:e.type,sourceLayerIndex:l,index:o,geometry:t?u.geometry:Oa(e),patterns:{},sortKey:c};s.push(h);}i&&s.sort(((t,e)=>t.sortKey-e.sortKey));for(const n of s){const{geometry:i,index:s,sourceLayerIndex:a}=n;if(this.hasPattern){const t=il("line",this.layers,n,this.zoom,e);this.patternFeatures.push(t);}else this.addFeature(n,i,s,r,{});e.featureIndex.insert(t[s].feature,i,s,a,this.index);}}update(t,e,r){this.stateDependentLayers.length&&this.programConfigurations.updatePaintArrays(t,e,this.stateDependentLayers,r);}addFeatures(t,e,r){for(const t of this.patternFeatures)this.addFeature(t,t.geometry,t.index,e,r);}isEmpty(){return 0===this.layoutVertexArray.length}uploadPending(){return !this.uploaded||this.programConfigurations.needsUpload}upload(t){this.uploaded||(0!==this.layoutVertexArray2.length&&(this.layoutVertexBuffer2=t.createVertexBuffer(this.layoutVertexArray2,Ol)),this.layoutVertexBuffer=t.createVertexBuffer(this.layoutVertexArray,Ll),this.indexBuffer=t.createIndexBuffer(this.indexArray)),this.programConfigurations.upload(t),this.uploaded=!0;}destroy(){this.layoutVertexBuffer&&(this.layoutVertexBuffer.destroy(),this.indexBuffer.destroy(),this.programConfigurations.destroy(),this.segments.destroy());}lineFeatureClips(t){if(t.properties&&Object.prototype.hasOwnProperty.call(t.properties,"mapbox_clip_start")&&Object.prototype.hasOwnProperty.call(t.properties,"mapbox_clip_end"))return {start:+t.properties.mapbox_clip_start,end:+t.properties.mapbox_clip_end}}addFeature(t,e,r,n,i){const s=this.layers[0].layout,a=s.get("line-join").evaluate(t,{}),o=s.get("line-cap"),l=s.get("line-miter-limit"),u=s.get("line-round-limit");this.lineClips=this.lineFeatureClips(t);for(const r of e)this.addLine(r,t,a,o,l,u);this.programConfigurations.populatePaintArrays(this.layoutVertexArray.length,t,r,i,n);}addLine(t,e,r,n,i,s){if(this.distance=0,this.scaledDistance=0,this.totalDistance=0,this.lineClips){this.lineClipsArray.push(this.lineClips);for(let e=0;e<t.length-1;e++)this.totalDistance+=t[e].dist(t[e+1]);this.updateScaledDistance(),this.maxLineLength=Math.max(this.maxLineLength,this.totalDistance);}const a="Polygon"===jl[e.type];let o=t.length;for(;o>=2&&t[o-1].equals(t[o-2]);)o--;let l=0;for(;l<o-1&&t[l].equals(t[l+1]);)l++;if(o<(a?3:2))return;"bevel"===r&&(i=1.05);const u=this.overscaling<=16?15*$a/(512*this.overscaling):0,c=this.segments.prepareSegment(10*o,this.layoutVertexArray,this.indexArray);let h,p,f,d,y;this.e1=this.e2=-1,a&&(h=t[o-2],y=t[l].sub(h)._unit()._perp());for(let e=l;e<o;e++){if(f=e===o-1?a?t[l+1]:void 0:t[e+1],f&&t[e].equals(f))continue;y&&(d=y),h&&(p=h),h=t[e],y=f?f.sub(h)._unit()._perp():d,d=d||y;let m=d.add(y);0===m.x&&0===m.y||m._unit();const g=d.x*y.x+d.y*y.y,x=m.x*y.x+m.y*y.y,v=0!==x?1/x:1/0,b=2*Math.sqrt(2-2*x),w=x<Rl&&p&&f,_=d.x*y.y-d.y*y.x>0;if(w&&e>l){const t=h.dist(p);if(t>2*u){const e=h.sub(h.sub(p)._mult(u/t)._round());this.updateDistance(p,e),this.addCurrentVertex(e,d,0,0,c),p=e;}}const A=p&&f;let S=A?r:a?"butt":n;if(A&&"round"===S&&(v<s?S="miter":v<=2&&(S="fakeround")),"miter"===S&&v>i&&(S="bevel"),"bevel"===S&&(v>2&&(S="flipbevel"),v<i&&(S="miter")),p&&this.updateDistance(p,h),"miter"===S)m._mult(v),this.addCurrentVertex(h,m,0,0,c);else if("flipbevel"===S){if(v>100)m=y.mult(-1);else {const t=v*d.add(y).mag()/d.sub(y).mag();m._perp()._mult(t*(_?-1:1));}this.addCurrentVertex(h,m,0,0,c),this.addCurrentVertex(h,m.mult(-1),0,0,c);}else if("bevel"===S||"fakeround"===S){const t=-Math.sqrt(v*v-1),e=_?t:0,r=_?0:t;if(p&&this.addCurrentVertex(h,d,e,r,c),"fakeround"===S){const t=Math.round(180*b/Math.PI/20);for(let e=1;e<t;e++){let r=e/t;if(.5!==r){const t=r-.5;r+=r*t*(r-1)*((1.0904+g*(g*(3.55645-1.43519*g)-3.2452))*t*t+(.848013+g*(.215638*g-1.06021)));}const n=y.sub(d)._mult(r)._add(d)._unit()._mult(_?-1:1);this.addHalfVertex(h,n.x,n.y,!1,_,0,c);}}f&&this.addCurrentVertex(h,y,-e,-r,c);}else if("butt"===S)this.addCurrentVertex(h,m,0,0,c);else if("square"===S){const t=p?1:-1;this.addCurrentVertex(h,m,t,t,c);}else "round"===S&&(p&&(this.addCurrentVertex(h,d,0,0,c),this.addCurrentVertex(h,d,1,1,c,!0)),f&&(this.addCurrentVertex(h,y,-1,-1,c,!0),this.addCurrentVertex(h,y,0,0,c)));if(w&&e<o-1){const t=h.dist(f);if(t>2*u){const e=h.add(f.sub(h)._mult(u/t)._round());this.updateDistance(h,e),this.addCurrentVertex(e,y,0,0,c),h=e;}}}}addCurrentVertex(t,e,r,n,i,s=!1){const a=e.y*n-e.x,o=-e.y-e.x*n;this.addHalfVertex(t,e.x+e.y*r,e.y-e.x*r,s,!1,r,i),this.addHalfVertex(t,a,o,s,!0,-n,i),this.distance>Ul/2&&0===this.totalDistance&&(this.distance=0,this.updateScaledDistance(),this.addCurrentVertex(t,e,r,n,i,s));}addHalfVertex({x:t,y:e},r,n,i,s,a,o){const l=.5*(this.lineClips?this.scaledDistance*(Ul-1):this.scaledDistance);this.layoutVertexArray.emplaceBack((t<<1)+(i?1:0),(e<<1)+(s?1:0),Math.round(63*r)+128,Math.round(63*n)+128,1+(0===a?0:a<0?-1:1)|(63&l)<<2,l>>6),this.lineClips&&this.layoutVertexArray2.emplaceBack((this.scaledDistance-this.lineClips.start)/(this.lineClips.end-this.lineClips.start),this.lineClipsArray.length);const u=o.vertexLength++;this.e1>=0&&this.e2>=0&&(this.indexArray.emplaceBack(this.e1,this.e2,u),o.primitiveLength++),s?this.e2=u:this.e1=u;}updateScaledDistance(){this.scaledDistance=this.lineClips?this.lineClips.start+(this.lineClips.end-this.lineClips.start)*this.distance/this.totalDistance:this.distance;}updateDistance(t,e){this.distance+=t.dist(e),this.updateScaledDistance();}}let Nl,Zl;wi("LineBucket",ql,{omit:["layers","patternFeatures"]});var Gl={get paint(){return Zl=Zl||new rs({"line-opacity":new Wi(G.paint_line["line-opacity"]),"line-color":new Wi(G.paint_line["line-color"]),"line-translate":new Ji(G.paint_line["line-translate"]),"line-translate-anchor":new Ji(G.paint_line["line-translate-anchor"]),"line-width":new Wi(G.paint_line["line-width"]),"line-gap-width":new Wi(G.paint_line["line-gap-width"]),"line-offset":new Wi(G.paint_line["line-offset"]),"line-blur":new Wi(G.paint_line["line-blur"]),"line-dasharray":new ts(G.paint_line["line-dasharray"]),"line-pattern":new Qi(G.paint_line["line-pattern"]),"line-gradient":new es(G.paint_line["line-gradient"])})},get layout(){return Nl=Nl||new rs({"line-cap":new Ji(G.layout_line["line-cap"]),"line-join":new Wi(G.layout_line["line-join"]),"line-miter-limit":new Ji(G.layout_line["line-miter-limit"]),"line-round-limit":new Ji(G.layout_line["line-round-limit"]),"line-sort-key":new Wi(G.layout_line["line-sort-key"])})}};class Kl extends Wi{possiblyEvaluate(t,e){return e=new Ui(Math.floor(e.zoom),{now:e.now,fadeDuration:e.fadeDuration,zoomHistory:e.zoomHistory,transition:e.transition}),super.possiblyEvaluate(t,e)}evaluate(t,e,r,n){return e=g({},e,{zoom:Math.floor(e.zoom)}),super.evaluate(t,e,r,n)}}let Xl;class Hl extends is{constructor(t){super(t,Gl),this.gradientVersion=0,Xl||(Xl=new Kl(Gl.paint.properties["line-width"].specification),Xl.useIntegerZoom=!0);}_handleSpecialPaintPropertyUpdate(t){if("line-gradient"===t){const t=this.gradientExpression();this.stepInterpolant=!!function(t){return void 0!==t._styleExpression}(t)&&t._styleExpression.expression instanceof Ae,this.gradientVersion=(this.gradientVersion+1)%Number.MAX_SAFE_INTEGER;}}gradientExpression(){return this._transitionablePaint._values["line-gradient"].value.expression}recalculate(t,e){super.recalculate(t,e),this.paint._values["line-floorwidth"]=Xl.possiblyEvaluate(this._transitioningPaint._values["line-width"].value,t);}createBucket(t){return new ql(t)}queryRadius(t){const e=t,r=Yl(to("line-width",this,e),to("line-gap-width",this,e)),n=to("line-offset",this,e);return r/2+Math.abs(n)+eo(this.paint.get("line-translate"))}queryIntersectsFeature(t,e,r,n,i,a,o){const l=ro(t,this.paint.get("line-translate"),this.paint.get("line-translate-anchor"),a.angle,o),u=o/2*Yl(this.paint.get("line-width").evaluate(e,r),this.paint.get("line-gap-width").evaluate(e,r)),c=this.paint.get("line-offset").evaluate(e,r);return c&&(n=function(t,e){const r=[];for(let n=0;n<t.length;n++){const i=t[n],a=[];for(let t=0;t<i.length;t++){const r=i[t-1],n=i[t],o=i[t+1],l=0===t?new s(0,0):n.sub(r)._unit()._perp(),u=t===i.length-1?new s(0,0):o.sub(n)._unit()._perp(),c=l._add(u)._unit(),h=c.x*u.x+c.y*u.y;0!==h&&c._mult(1/h),a.push(c._mult(e)._add(n));}r.push(a);}return r}(n,c*o)),function(t,e,r){for(let n=0;n<e.length;n++){const i=e[n];if(t.length>=3)for(let e=0;e<i.length;e++)if(Wa(t,i[e]))return !0;if(Ga(t,i,r))return !0}return !1}(l,n,u)}isTileClipped(){return !0}}function Yl(t,e){return e>0?e+2*t:t}const Jl=ls([{name:"a_pos_offset",components:4,type:"Int16"},{name:"a_data",components:4,type:"Uint16"},{name:"a_pixeloffset",components:4,type:"Int16"}],4),Wl=ls([{name:"a_projected_pos",components:3,type:"Float32"}],4);ls([{name:"a_fade_opacity",components:1,type:"Uint32"}],4);const Ql=ls([{name:"a_placed",components:2,type:"Uint8"},{name:"a_shift",components:2,type:"Float32"},{name:"a_box_real",components:2,type:"Int16"}]);ls([{type:"Int16",name:"anchorPointX"},{type:"Int16",name:"anchorPointY"},{type:"Int16",name:"x1"},{type:"Int16",name:"y1"},{type:"Int16",name:"x2"},{type:"Int16",name:"y2"},{type:"Uint32",name:"featureIndex"},{type:"Uint16",name:"sourceLayerIndex"},{type:"Uint16",name:"bucketIndex"}]);const tu=ls([{name:"a_pos",components:2,type:"Int16"},{name:"a_anchor_pos",components:2,type:"Int16"},{name:"a_extrude",components:2,type:"Int16"}],4),eu=ls([{name:"a_pos",components:2,type:"Float32"},{name:"a_radius",components:1,type:"Float32"},{name:"a_flags",components:2,type:"Int16"}],4);function ru(t,e,r){return t.sections.forEach((t=>{t.text=function(t,e,r){const n=e.layout.get("text-transform").evaluate(r,{});return 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Iu=r(su);const zu=3;function Pu(t,e,r){1===t&&r.readMessage(Cu,e);}function Cu(t,e,r){if(3===t){const{id:t,bitmap:n,width:i,height:s,left:a,top:o,advance:l}=r.readMessage(Bu,{});e.push({id:t,bitmap:new _o({width:i+2*zu,height:s+2*zu},n),metrics:{width:i,height:s,left:a,top:o,advance:l}});}}function Bu(t,e,r){1===t?e.id=r.readVarint():2===t?e.bitmap=r.readBytes():3===t?e.width=r.readVarint():4===t?e.height=r.readVarint():5===t?e.left=r.readSVarint():6===t?e.top=r.readSVarint():7===t&&(e.advance=r.readVarint());}const Vu=zu;function Eu(t){let e=0,r=0;for(const n of t)e+=n.w*n.h,r=Math.max(r,n.w);t.sort(((t,e)=>e.h-t.h));const n=[{x:0,y:0,w:Math.max(Math.ceil(Math.sqrt(e/.95)),r),h:1/0}];let i=0,s=0;for(const e of t)for(let t=n.length-1;t>=0;t--){const r=n[t];if(!(e.w>r.w||e.h>r.h)){if(e.x=r.x,e.y=r.y,s=Math.max(s,e.y+e.h),i=Math.max(i,e.x+e.w),e.w===r.w&&e.h===r.h){const e=n.pop();t<n.length&&(n[t]=e);}else e.h===r.h?(r.x+=e.w,r.w-=e.w):e.w===r.w?(r.y+=e.h,r.h-=e.h):(n.push({x:r.x+e.w,y:r.y,w:r.w-e.w,h:e.h}),r.y+=e.h,r.h-=e.h);break}}return {w:i,h:s,fill:e/(i*s)||0}}const Fu=1;class Tu{constructor(t,{pixelRatio:e,version:r,stretchX:n,stretchY:i,content:s,textFitWidth:a,textFitHeight:o}){this.paddedRect=t,this.pixelRatio=e,this.stretchX=n,this.stretchY=i,this.content=s,this.version=r,this.textFitWidth=a,this.textFitHeight=o;}get tl(){return [this.paddedRect.x+Fu,this.paddedRect.y+Fu]}get br(){return [this.paddedRect.x+this.paddedRect.w-Fu,this.paddedRect.y+this.paddedRect.h-Fu]}get tlbr(){return this.tl.concat(this.br)}get displaySize(){return [(this.paddedRect.w-2*Fu)/this.pixelRatio,(this.paddedRect.h-2*Fu)/this.pixelRatio]}}class $u{constructor(t,e){const r={},n={};this.haveRenderCallbacks=[];const i=[];this.addImages(t,r,i),this.addImages(e,n,i);const{w:s,h:a}=Eu(i),o=new Ao({width:s||1,height:a||1});for(const e in t){const n=t[e],i=r[e].paddedRect;Ao.copy(n.data,o,{x:0,y:0},{x:i.x+Fu,y:i.y+Fu},n.data);}for(const t in e){const r=e[t],i=n[t].paddedRect,s=i.x+Fu,a=i.y+Fu,l=r.data.width,u=r.data.height;Ao.copy(r.data,o,{x:0,y:0},{x:s,y:a},r.data),Ao.copy(r.data,o,{x:0,y:u-1},{x:s,y:a-1},{width:l,height:1}),Ao.copy(r.data,o,{x:0,y:0},{x:s,y:a+u},{width:l,height:1}),Ao.copy(r.data,o,{x:l-1,y:0},{x:s-1,y:a},{width:1,height:u}),Ao.copy(r.data,o,{x:0,y:0},{x:s+l,y:a},{width:1,height:u});}this.image=o,this.iconPositions=r,this.patternPositions=n;}addImages(t,e,r){for(const n in t){const i=t[n],s={x:0,y:0,w:i.data.width+2*Fu,h:i.data.height+2*Fu};r.push(s),e[n]=new Tu(s,i),i.hasRenderCallback&&this.haveRenderCallbacks.push(n);}}patchUpdatedImages(t,e){t.dispatchRenderCallbacks(this.haveRenderCallbacks);for(const r in t.updatedImages)this.patchUpdatedImage(this.iconPositions[r],t.getImage(r),e),this.patchUpdatedImage(this.patternPositions[r],t.getImage(r),e);}patchUpdatedImage(t,e,r){if(!t||!e)return;if(t.version===e.version)return;t.version=e.version;const[n,i]=t.tl;r.update(e.data,void 0,{x:n,y:i});}}var Lu;wi("ImagePosition",Tu),wi("ImageAtlas",$u),t.ah=void 0,(Lu=t.ah||(t.ah={}))[Lu.none=0]="none",Lu[Lu.horizontal=1]="horizontal",Lu[Lu.vertical=2]="vertical",Lu[Lu.horizontalOnly=3]="horizontalOnly";const Du=-17;class Ou{constructor(){this.scale=1,this.fontStack="",this.imageName=null;}static forText(t,e){const r=new Ou;return r.scale=t||1,r.fontStack=e,r}static forImage(t){const e=new Ou;return e.imageName=t,e}}class ju{constructor(){this.text="",this.sectionIndex=[],this.sections=[],this.imageSectionID=null;}static fromFeature(t,e){const r=new ju;for(let n=0;n<t.sections.length;n++){const i=t.sections[n];i.image?r.addImageSection(i):r.addTextSection(i,e);}return r}length(){return this.text.length}getSection(t){return this.sections[this.sectionIndex[t]]}getSectionIndex(t){return this.sectionIndex[t]}getCharCode(t){return this.text.charCodeAt(t)}verticalizePunctuation(){this.text=function(t){let e="";for(let r=0;r<t.length;r++){const n=t.charCodeAt(r+1)||null,i=t.charCodeAt(r-1)||null;e+=n&&$i(n)&&!nu[t[r+1]]||i&&$i(i)&&!nu[t[r-1]]||!nu[t[r]]?t[r]:nu[t[r]];}return e}(this.text);}trim(){let t=0;for(let e=0;e<this.text.length&&Uu[this.text.charCodeAt(e)];e++)t++;let e=this.text.length;for(let r=this.text.length-1;r>=0&&r>=t&&Uu[this.text.charCodeAt(r)];r--)e--;this.text=this.text.substring(t,e),this.sectionIndex=this.sectionIndex.slice(t,e);}substring(t,e){const r=new ju;return r.text=this.text.substring(t,e),r.sectionIndex=this.sectionIndex.slice(t,e),r.sections=this.sections,r}toString(){return this.text}getMaxScale(){return this.sectionIndex.reduce(((t,e)=>Math.max(t,this.sections[e].scale)),0)}addTextSection(t,e){this.text+=t.text,this.sections.push(Ou.forText(t.scale,t.fontStack||e));const r=this.sections.length-1;for(let e=0;e<t.text.length;++e)this.sectionIndex.push(r);}addImageSection(t){const e=t.image?t.image.name:"";if(0===e.length)return void A("Can't add FormattedSection with an empty image.");const r=this.getNextImageSectionCharCode();r?(this.text+=String.fromCharCode(r),this.sections.push(Ou.forImage(e)),this.sectionIndex.push(this.sections.length-1)):A("Reached maximum number of images 6401");}getNextImageSectionCharCode(){return this.imageSectionID?this.imageSectionID>=63743?null:++this.imageSectionID:(this.imageSectionID=57344,this.imageSectionID)}}function Ru(e,r,n,i,s,a,o,l,u,c,h,p,f,d,y){const m=ju.fromFeature(e,s);let g;p===t.ah.vertical&&m.verticalizePunctuation();const{processBidirectionalText:x,processStyledBidirectionalText:v}=Ri;if(x&&1===m.sections.length){g=[];const t=x(m.toString(),Yu(m,c,a,r,i,d));for(const e of t){const t=new ju;t.text=e,t.sections=m.sections;for(let r=0;r<e.length;r++)t.sectionIndex.push(0);g.push(t);}}else if(v){g=[];const t=v(m.text,m.sectionIndex,Yu(m,c,a,r,i,d));for(const e of t){const t=new ju;t.text=e[0],t.sectionIndex=e[1],t.sections=m.sections,g.push(t);}}else g=function(t,e){const r=[],n=t.text;let i=0;for(const n of e)r.push(t.substring(i,n)),i=n;return i<n.length&&r.push(t.substring(i,n.length)),r}(m,Yu(m,c,a,r,i,d));const b=[],w={positionedLines:b,text:m.toString(),top:h[1],bottom:h[1],left:h[0],right:h[0],writingMode:p,iconsInText:!1,verticalizable:!1};return function(e,r,n,i,s,a,o,l,u,c,h,p){let f=0,d=Du,y=0,m=0;const g="right"===l?1:"left"===l?0:.5;let x=0;for(const o of s){o.trim();const s=o.getMaxScale(),l=(s-1)*iu,b={positionedGlyphs:[],lineOffset:0};e.positionedLines[x]=b;const w=b.positionedGlyphs;let _=0;if(!o.length()){d+=a,++x;continue}for(let a=0;a<o.length();a++){const y=o.getSection(a),m=o.getSectionIndex(a),g=o.getCharCode(a);let x=0,b=null,A=null,S=null,k=iu;const M=!(u===t.ah.horizontal||!h&&!Ti(g)||h&&(Uu[g]||(v=g,/\p{sc=Arab}/u.test(String.fromCodePoint(v)))));if(y.imageName){const t=i[y.imageName];if(!t)continue;S=y.imageName,e.iconsInText=e.iconsInText||!0,A=t.paddedRect;const r=t.displaySize;y.scale=y.scale*iu/p,b={width:r[0],height:r[1],left:Fu,top:-Vu,advance:M?r[1]:r[0]},x=l+(iu-r[1]*y.scale),k=b.advance;const n=M?r[0]*y.scale-iu*s:r[1]*y.scale-iu*s;n>0&&n>_&&(_=n);}else {const t=n[y.fontStack],e=t&&t[g];if(e&&e.rect)A=e.rect,b=e.metrics;else {const 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Uu={9:!0,10:!0,11:!0,12:!0,13:!0,32:!0},qu={10:!0,32:!0,38:!0,41:!0,43:!0,45:!0,47:!0,173:!0,183:!0,8203:!0,8208:!0,8211:!0,8231:!0},Nu={40:!0};function Zu(t,e,r,n,i,s){if(e.imageName){const t=n[e.imageName];return t?t.displaySize[0]*e.scale*iu/s+i:0}{const n=r[e.fontStack],s=n&&n[t];return s?s.metrics.advance*e.scale+i:0}}function Gu(t,e,r,n){const i=Math.pow(t-e,2);return n?t<e?i/2:2*i:i+Math.abs(r)*r}function Ku(t,e,r){let n=0;return 10===t&&(n-=1e4),r&&(n+=150),40!==t&&65288!==t||(n+=50),41!==e&&65289!==e||(n+=50),n}function Xu(t,e,r,n,i,s){let a=null,o=Gu(e,r,i,s);for(const t of n){const n=Gu(e-t.x,r,i,s)+t.badness;n<=o&&(a=t,o=n);}return {index:t,x:e,priorBreak:a,badness:o}}function Hu(t){return t?Hu(t.priorBreak).concat(t.index):[]}function Yu(t,e,r,n,i,s){if(!t)return [];const a=[],o=function(t,e,r,n,i,s){let a=0;for(let r=0;r<t.length();r++){const o=t.getSection(r);a+=Zu(t.getCharCode(r),o,n,i,e,s);}return a/Math.max(1,Math.ceil(a/r))}(t,e,r,n,i,s),l=t.text.indexOf("​")>=0;let u=0;for(let r=0;r<t.length();r++){const h=t.getSection(r),p=t.getCharCode(r);if(Uu[p]||(u+=Zu(p,h,n,i,e,s)),r<t.length()-1){const e=!((c=p)<11904)&&(!!zi["CJK Compatibility Forms"](c)||!!zi["CJK Compatibility"](c)||!!zi["CJK Strokes"](c)||!!zi["CJK Symbols and Punctuation"](c)||!!zi["Enclosed CJK Letters and Months"](c)||!!zi["Halfwidth and Fullwidth Forms"](c)||!!zi["Ideographic Description Characters"](c)||!!zi["Vertical Forms"](c)||Fi.test(String.fromCodePoint(c)));(qu[p]||e||h.imageName||r!==t.length()-2&&Nu[t.getCharCode(r+1)])&&a.push(Xu(r+1,u,o,a,Ku(p,t.getCharCode(r+1),e&&l),!1));}}var c;return Hu(Xu(t.length(),u,o,a,0,!0))}function Ju(t){let e=.5,r=.5;switch(t){case"right":case"top-right":case"bottom-right":e=1;break;case"left":case"top-left":case"bottom-left":e=0;}switch(t){case"bottom":case"bottom-right":case"bottom-left":r=1;break;case"top":case"top-right":case"top-left":r=0;}return {horizontalAlign:e,verticalAlign:r}}function Wu(t,e,r,n,i){if(!n&&!i)return;const s=t[r],a=(t[r].x+s.metrics.advance*s.scale)*n;for(let n=e;n<=r;n++)t[n].x-=a,t[n].y+=i;}function Qu(t,e,r){const{horizontalAlign:n,verticalAlign:i}=Ju(r),s=e[0]-t.displaySize[0]*n,a=e[1]-t.displaySize[1]*i;return {image:t,top:a,bottom:a+t.displaySize[1],left:s,right:s+t.displaySize[0]}}function tc(t){var e,r;let n=t.left,i=t.top,s=t.right-n,a=t.bottom-i;const o=null!==(e=t.image.textFitWidth)&&void 0!==e?e:"stretchOrShrink",l=null!==(r=t.image.textFitHeight)&&void 0!==r?r:"stretchOrShrink",u=(t.image.content[2]-t.image.content[0])/(t.image.content[3]-t.image.content[1]);if("proportional"===l){if("stretchOnly"===o&&s/a<u||"proportional"===o){const t=Math.ceil(a*u);n*=t/s,s=t;}}else if("proportional"===o&&"stretchOnly"===l&&0!==u&&s/a>u){const t=Math.ceil(s/u);i*=t/a,a=t;}return {x1:n,y1:i,x2:n+s,y2:i+a}}function ec(t,e,r,n,i,s){const a=t.image;let o;if(a.content){const t=a.content,e=a.pixelRatio||1;o=[t[0]/e,t[1]/e,a.displaySize[0]-t[2]/e,a.displaySize[1]-t[3]/e];}const l=e.left*s,u=e.right*s;let c,h,p,f;"width"===r||"both"===r?(f=i[0]+l-n[3],h=i[0]+u+n[1]):(f=i[0]+(l+u-a.displaySize[0])/2,h=f+a.displaySize[0]);const d=e.top*s,y=e.bottom*s;return "height"===r||"both"===r?(c=i[1]+d-n[0],p=i[1]+y+n[2]):(c=i[1]+(d+y-a.displaySize[1])/2,p=c+a.displaySize[1]),{image:a,top:c,right:h,bottom:p,left:f,collisionPadding:o}}const rc=255,nc=128,ic=rc*nc;function sc(t,e){const{expression:r}=e;if("constant"===r.kind)return {kind:"constant",layoutSize:r.evaluate(new Ui(t+1))};if("source"===r.kind)return {kind:"source"};{const{zoomStops:e,interpolationType:n}=r;let i=0;for(;i<e.length&&e[i]<=t;)i++;i=Math.max(0,i-1);let s=i;for(;s<e.length&&e[s]<t+1;)s++;s=Math.min(e.length-1,s);const a=e[i],o=e[s];return "composite"===r.kind?{kind:"composite",minZoom:a,maxZoom:o,interpolationType:n}:{kind:"camera",minZoom:a,maxZoom:o,minSize:r.evaluate(new Ui(a)),maxSize:r.evaluate(new Ui(o)),interpolationType:n}}}function ac(t,e,r){let n="never";const i=t.get(e);return i?n=i:t.get(r)&&(n="always"),n}const oc=fl.VectorTileFeature.types,lc=[{name:"a_fade_opacity",components:1,type:"Uint8",offset:0}];function uc(t,e,r,n,i,s,a,o,l,u,c,h,p){const f=o?Math.min(ic,Math.round(o[0])):0,d=o?Math.min(ic,Math.round(o[1])):0;t.emplaceBack(e,r,Math.round(32*n),Math.round(32*i),s,a,(f<<1)+(l?1:0),d,16*u,16*c,256*h,256*p);}function cc(t,e,r){t.emplaceBack(e.x,e.y,r),t.emplaceBack(e.x,e.y,r),t.emplaceBack(e.x,e.y,r),t.emplaceBack(e.x,e.y,r);}function hc(t){for(const e of t.sections)if(ji(e.text))return !0;return !1}class pc{constructor(t){this.layoutVertexArray=new Ws,this.indexArray=new na,this.programConfigurations=t,this.segments=new oa,this.dynamicLayoutVertexArray=new Qs,this.opacityVertexArray=new ta,this.hasVisibleVertices=!1,this.placedSymbolArray=new $s;}isEmpty(){return 0===this.layoutVertexArray.length&&0===this.indexArray.length&&0===this.dynamicLayoutVertexArray.length&&0===this.opacityVertexArray.length}upload(t,e,r,n){this.isEmpty()||(r&&(this.layoutVertexBuffer=t.createVertexBuffer(this.layoutVertexArray,Jl.members),this.indexBuffer=t.createIndexBuffer(this.indexArray,e),this.dynamicLayoutVertexBuffer=t.createVertexBuffer(this.dynamicLayoutVertexArray,Wl.members,!0),this.opacityVertexBuffer=t.createVertexBuffer(this.opacityVertexArray,lc,!0),this.opacityVertexBuffer.itemSize=1),(r||n)&&this.programConfigurations.upload(t));}destroy(){this.layoutVertexBuffer&&(this.layoutVertexBuffer.destroy(),this.indexBuffer.destroy(),this.programConfigurations.destroy(),this.segments.destroy(),this.dynamicLayoutVertexBuffer.destroy(),this.opacityVertexBuffer.destroy());}}wi("SymbolBuffers",pc);class fc{constructor(t,e,r){this.layoutVertexArray=new t,this.layoutAttributes=e,this.indexArray=new r,this.segments=new oa,this.collisionVertexArray=new ra;}upload(t){this.layoutVertexBuffer=t.createVertexBuffer(this.layoutVertexArray,this.layoutAttributes),this.indexBuffer=t.createIndexBuffer(this.indexArray),this.collisionVertexBuffer=t.createVertexBuffer(this.collisionVertexArray,Ql.members,!0);}destroy(){this.layoutVertexBuffer&&(this.layoutVertexBuffer.destroy(),this.indexBuffer.destroy(),this.segments.destroy(),this.collisionVertexBuffer.destroy());}}wi("CollisionBuffers",fc);class dc{constructor(e){this.collisionBoxArray=e.collisionBoxArray,this.zoom=e.zoom,this.overscaling=e.overscaling,this.layers=e.layers,this.layerIds=this.layers.map((t=>t.id)),this.index=e.index,this.pixelRatio=e.pixelRatio,this.sourceLayerIndex=e.sourceLayerIndex,this.hasPattern=!1,this.hasRTLText=!1,this.sortKeyRanges=[],this.collisionCircleArray=[],this.placementInvProjMatrix=lo([]),this.placementViewportMatrix=lo([]);const r=this.layers[0]._unevaluatedLayout._values;this.textSizeData=sc(this.zoom,r["text-size"]),this.iconSizeData=sc(this.zoom,r["icon-size"]);const n=this.layers[0].layout,i=n.get("symbol-sort-key"),s=n.get("symbol-z-order");this.canOverlap="never"!==ac(n,"text-overlap","text-allow-overlap")||"never"!==ac(n,"icon-overlap","icon-allow-overlap")||n.get("text-ignore-placement")||n.get("icon-ignore-placement"),this.sortFeaturesByKey="viewport-y"!==s&&!i.isConstant(),this.sortFeaturesByY=("viewport-y"===s||"auto"===s&&!this.sortFeaturesByKey)&&this.canOverlap,"point"===n.get("symbol-placement")&&(this.writingModes=n.get("text-writing-mode").map((e=>t.ah[e]))),this.stateDependentLayerIds=this.layers.filter((t=>t.isStateDependent())).map((t=>t.id)),this.sourceID=e.sourceID;}createArrays(){this.text=new pc(new Ea(this.layers,this.zoom,(t=>/^text/.test(t)))),this.icon=new pc(new Ea(this.layers,this.zoom,(t=>/^icon/.test(t)))),this.glyphOffsetArray=new Os,this.lineVertexArray=new js,this.symbolInstances=new Ds,this.textAnchorOffsets=new Us;}calculateGlyphDependencies(t,e,r,n,i){for(let s=0;s<t.length;s++)if(e[t.charCodeAt(s)]=!0,(r||n)&&i){const r=nu[t.charAt(s)];r&&(e[r.charCodeAt(0)]=!0);}}populate(e,r,n){const i=this.layers[0],s=i.layout,a=s.get("text-font"),o=s.get("text-field"),l=s.get("icon-image"),u=("constant"!==o.value.kind||o.value.value instanceof Yt&&!o.value.value.isEmpty()||o.value.value.toString().length>0)&&("constant"!==a.value.kind||a.value.value.length>0),c="constant"!==l.value.kind||!!l.value.value||Object.keys(l.parameters).length>0,h=s.get("symbol-sort-key");if(this.features=[],!u&&!c)return;const p=r.iconDependencies,f=r.glyphDependencies,d=r.availableImages,y=new Ui(this.zoom);for(const{feature:r,id:o,index:l,sourceLayerIndex:m}of e){const e=i._featureFilter.needGeometry,g=ja(r,e);if(!i._featureFilter.filter(y,g,n))continue;let x,v;if(e||(g.geometry=Oa(r)),u){const t=i.getValueAndResolveTokens("text-field",g,n,d),e=Yt.factory(t),r=this.hasRTLText=this.hasRTLText||hc(e);(!r||"unavailable"===Ri.getRTLTextPluginStatus()||r&&Ri.isParsed())&&(x=ru(e,i,g));}if(c){const t=i.getValueAndResolveTokens("icon-image",g,n,d);v=t instanceof te?t:te.fromString(t);}if(!x&&!v)continue;const b=this.sortFeaturesByKey?h.evaluate(g,{},n):void 0;if(this.features.push({id:o,text:x,icon:v,index:l,sourceLayerIndex:m,geometry:g.geometry,properties:r.properties,type:oc[r.type],sortKey:b}),v&&(p[v.name]=!0),x){const e=a.evaluate(g,{},n).join(","),r="viewport"!==s.get("text-rotation-alignment")&&"point"!==s.get("symbol-placement");this.allowVerticalPlacement=this.writingModes&&this.writingModes.indexOf(t.ah.vertical)>=0;for(const t of x.sections)if(t.image)p[t.image.name]=!0;else {const n=Pi(x.toString()),i=t.fontStack||e,s=f[i]=f[i]||{};this.calculateGlyphDependencies(t.text,s,r,this.allowVerticalPlacement,n);}}}"line"===s.get("symbol-placement")&&(this.features=function(t){const e={},r={},n=[];let i=0;function s(e){n.push(t[e]),i++;}function a(t,e,i){const s=r[t];return delete r[t],r[e]=s,n[s].geometry[0].pop(),n[s].geometry[0]=n[s].geometry[0].concat(i[0]),s}function o(t,r,i){const s=e[r];return delete e[r],e[t]=s,n[s].geometry[0].shift(),n[s].geometry[0]=i[0].concat(n[s].geometry[0]),s}function l(t,e,r){const n=r?e[0][e[0].length-1]:e[0][0];return `${t}:${n.x}:${n.y}`}for(let u=0;u<t.length;u++){const c=t[u],h=c.geometry,p=c.text?c.text.toString():null;if(!p){s(u);continue}const f=l(p,h),d=l(p,h,!0);if(f in r&&d in e&&r[f]!==e[d]){const t=o(f,d,h),i=a(f,d,n[t].geometry);delete e[f],delete r[d],r[l(p,n[i].geometry,!0)]=i,n[t].geometry=null;}else f in r?a(f,d,h):d in e?o(f,d,h):(s(u),e[f]=i-1,r[d]=i-1);}return n.filter((t=>t.geometry))}(this.features)),this.sortFeaturesByKey&&this.features.sort(((t,e)=>t.sortKey-e.sortKey));}update(t,e,r){this.stateDependentLayers.length&&(this.text.programConfigurations.updatePaintArrays(t,e,this.layers,r),this.icon.programConfigurations.updatePaintArrays(t,e,this.layers,r));}isEmpty(){return 0===this.symbolInstances.length&&!this.hasRTLText}uploadPending(){return !this.uploaded||this.text.programConfigurations.needsUpload||this.icon.programConfigurations.needsUpload}upload(t){!this.uploaded&&this.hasDebugData()&&(this.textCollisionBox.upload(t),this.iconCollisionBox.upload(t)),this.text.upload(t,this.sortFeaturesByY,!this.uploaded,this.text.programConfigurations.needsUpload),this.icon.upload(t,this.sortFeaturesByY,!this.uploaded,this.icon.programConfigurations.needsUpload),this.uploaded=!0;}destroyDebugData(){this.textCollisionBox.destroy(),this.iconCollisionBox.destroy();}destroy(){this.text.destroy(),this.icon.destroy(),this.hasDebugData()&&this.destroyDebugData();}addToLineVertexArray(t,e){const r=this.lineVertexArray.length;if(void 0!==t.segment){let r=t.dist(e[t.segment+1]),n=t.dist(e[t.segment]);const i={};for(let n=t.segment+1;n<e.length;n++)i[n]={x:e[n].x,y:e[n].y,tileUnitDistanceFromAnchor:r},n<e.length-1&&(r+=e[n+1].dist(e[n]));for(let r=t.segment||0;r>=0;r--)i[r]={x:e[r].x,y:e[r].y,tileUnitDistanceFromAnchor:n},r>0&&(n+=e[r-1].dist(e[r]));for(let t=0;t<e.length;t++){const e=i[t];this.lineVertexArray.emplaceBack(e.x,e.y,e.tileUnitDistanceFromAnchor);}}return {lineStartIndex:r,lineLength:this.lineVertexArray.length-r}}addSymbols(e,r,n,i,s,a,o,l,u,c,h,p){const f=e.indexArray,d=e.layoutVertexArray,y=e.segments.prepareSegment(4*r.length,d,f,this.canOverlap?a.sortKey:void 0),m=this.glyphOffsetArray.length,g=y.vertexLength,x=this.allowVerticalPlacement&&o===t.ah.vertical?Math.PI/2:0,v=a.text&&a.text.sections;for(let t=0;t<r.length;t++){const{tl:i,tr:s,bl:o,br:u,tex:c,pixelOffsetTL:h,pixelOffsetBR:m,minFontScaleX:g,minFontScaleY:b,glyphOffset:w,isSDF:_,sectionIndex:A}=r[t],S=y.vertexLength,k=w[1];uc(d,l.x,l.y,i.x,k+i.y,c.x,c.y,n,_,h.x,h.y,g,b),uc(d,l.x,l.y,s.x,k+s.y,c.x+c.w,c.y,n,_,m.x,h.y,g,b),uc(d,l.x,l.y,o.x,k+o.y,c.x,c.y+c.h,n,_,h.x,m.y,g,b),uc(d,l.x,l.y,u.x,k+u.y,c.x+c.w,c.y+c.h,n,_,m.x,m.y,g,b),cc(e.dynamicLayoutVertexArray,l,x),f.emplaceBack(S,S+1,S+2),f.emplaceBack(S+1,S+2,S+3),y.vertexLength+=4,y.primitiveLength+=2,this.glyphOffsetArray.emplaceBack(w[0]),t!==r.length-1&&A===r[t+1].sectionIndex||e.programConfigurations.populatePaintArrays(d.length,a,a.index,{},p,v&&v[A]);}e.placedSymbolArray.emplaceBack(l.x,l.y,m,this.glyphOffsetArray.length-m,g,u,c,l.segment,n?n[0]:0,n?n[1]:0,i[0],i[1],o,0,!1,0,h);}_addCollisionDebugVertex(t,e,r,n,i,s){return e.emplaceBack(0,0),t.emplaceBack(r.x,r.y,n,i,Math.round(s.x),Math.round(s.y))}addCollisionDebugVertices(t,e,r,n,i,a,o){const l=i.segments.prepareSegment(4,i.layoutVertexArray,i.indexArray),u=l.vertexLength,c=i.layoutVertexArray,h=i.collisionVertexArray,p=o.anchorX,f=o.anchorY;this._addCollisionDebugVertex(c,h,a,p,f,new s(t,e)),this._addCollisionDebugVertex(c,h,a,p,f,new s(r,e)),this._addCollisionDebugVertex(c,h,a,p,f,new s(r,n)),this._addCollisionDebugVertex(c,h,a,p,f,new s(t,n)),l.vertexLength+=4;const d=i.indexArray;d.emplaceBack(u,u+1),d.emplaceBack(u+1,u+2),d.emplaceBack(u+2,u+3),d.emplaceBack(u+3,u),l.primitiveLength+=4;}addDebugCollisionBoxes(t,e,r,n){for(let i=t;i<e;i++){const t=this.collisionBoxArray.get(i);this.addCollisionDebugVertices(t.x1,t.y1,t.x2,t.y2,n?this.textCollisionBox:this.iconCollisionBox,t.anchorPoint,r);}}generateCollisionDebugBuffers(){this.hasDebugData()&&this.destroyDebugData(),this.textCollisionBox=new fc(ea,tu.members,ia),this.iconCollisionBox=new fc(ea,tu.members,ia);for(let t=0;t<this.symbolInstances.length;t++){const e=this.symbolInstances.get(t);this.addDebugCollisionBoxes(e.textBoxStartIndex,e.textBoxEndIndex,e,!0),this.addDebugCollisionBoxes(e.verticalTextBoxStartIndex,e.verticalTextBoxEndIndex,e,!0),this.addDebugCollisionBoxes(e.iconBoxStartIndex,e.iconBoxEndIndex,e,!1),this.addDebugCollisionBoxes(e.verticalIconBoxStartIndex,e.verticalIconBoxEndIndex,e,!1);}}_deserializeCollisionBoxesForSymbol(t,e,r,n,i,s,a,o,l){const u={};for(let n=e;n<r;n++){const e=t.get(n);u.textBox={x1:e.x1,y1:e.y1,x2:e.x2,y2:e.y2,anchorPointX:e.anchorPointX,anchorPointY:e.anchorPointY},u.textFeatureIndex=e.featureIndex;break}for(let e=n;e<i;e++){const r=t.get(e);u.verticalTextBox={x1:r.x1,y1:r.y1,x2:r.x2,y2:r.y2,anchorPointX:r.anchorPointX,anchorPointY:r.anchorPointY},u.verticalTextFeatureIndex=r.featureIndex;break}for(let e=s;e<a;e++){const r=t.get(e);u.iconBox={x1:r.x1,y1:r.y1,x2:r.x2,y2:r.y2,anchorPointX:r.anchorPointX,anchorPointY:r.anchorPointY},u.iconFeatureIndex=r.featureIndex;break}for(let e=o;e<l;e++){const r=t.get(e);u.verticalIconBox={x1:r.x1,y1:r.y1,x2:r.x2,y2:r.y2,anchorPointX:r.anchorPointX,anchorPointY:r.anchorPointY},u.verticalIconFeatureIndex=r.featureIndex;break}return u}deserializeCollisionBoxes(t){this.collisionArrays=[];for(let e=0;e<this.symbolInstances.length;e++){const r=this.symbolInstances.get(e);this.collisionArrays.push(this._deserializeCollisionBoxesForSymbol(t,r.textBoxStartIndex,r.textBoxEndIndex,r.verticalTextBoxStartIndex,r.verticalTextBoxEndIndex,r.iconBoxStartIndex,r.iconBoxEndIndex,r.verticalIconBoxStartIndex,r.verticalIconBoxEndIndex));}}hasTextData(){return this.text.segments.get().length>0}hasIconData(){return this.icon.segments.get().length>0}hasDebugData(){return this.textCollisionBox&&this.iconCollisionBox}hasTextCollisionBoxData(){return this.hasDebugData()&&this.textCollisionBox.segments.get().length>0}hasIconCollisionBoxData(){return this.hasDebugData()&&this.iconCollisionBox.segments.get().length>0}addIndicesForPlacedSymbol(t,e){const r=t.placedSymbolArray.get(e),n=r.vertexStartIndex+4*r.numGlyphs;for(let e=r.vertexStartIndex;e<n;e+=4)t.indexArray.emplaceBack(e,e+1,e+2),t.indexArray.emplaceBack(e+1,e+2,e+3);}getSortedSymbolIndexes(t){if(this.sortedAngle===t&&void 0!==this.symbolInstanceIndexes)return this.symbolInstanceIndexes;const e=Math.sin(t),r=Math.cos(t),n=[],i=[],s=[];for(let t=0;t<this.symbolInstances.length;++t){s.push(t);const a=this.symbolInstances.get(t);n.push(0|Math.round(e*a.anchorX+r*a.anchorY)),i.push(a.featureIndex);}return s.sort(((t,e)=>n[t]-n[e]||i[e]-i[t])),s}addToSortKeyRanges(t,e){const r=this.sortKeyRanges[this.sortKeyRanges.length-1];r&&r.sortKey===e?r.symbolInstanceEnd=t+1:this.sortKeyRanges.push({sortKey:e,symbolInstanceStart:t,symbolInstanceEnd:t+1});}sortFeatures(t){if(this.sortFeaturesByY&&this.sortedAngle!==t&&!(this.text.segments.get().length>1||this.icon.segments.get().length>1)){this.symbolInstanceIndexes=this.getSortedSymbolIndexes(t),this.sortedAngle=t,this.text.indexArray.clear(),this.icon.indexArray.clear(),this.featureSortOrder=[];for(const t of this.symbolInstanceIndexes){const e=this.symbolInstances.get(t);this.featureSortOrder.push(e.featureIndex),[e.rightJustifiedTextSymbolIndex,e.centerJustifiedTextSymbolIndex,e.leftJustifiedTextSymbolIndex].forEach(((t,e,r)=>{t>=0&&r.indexOf(t)===e&&this.addIndicesForPlacedSymbol(this.text,t);})),e.verticalPlacedTextSymbolIndex>=0&&this.addIndicesForPlacedSymbol(this.text,e.verticalPlacedTextSymbolIndex),e.placedIconSymbolIndex>=0&&this.addIndicesForPlacedSymbol(this.icon,e.placedIconSymbolIndex),e.verticalPlacedIconSymbolIndex>=0&&this.addIndicesForPlacedSymbol(this.icon,e.verticalPlacedIconSymbolIndex);}this.text.indexBuffer&&this.text.indexBuffer.updateData(this.text.indexArray),this.icon.indexBuffer&&this.icon.indexBuffer.updateData(this.icon.indexArray);}}}let yc,mc;wi("SymbolBucket",dc,{omit:["layers","collisionBoxArray","features","compareText"]}),dc.MAX_GLYPHS=65535,dc.addDynamicAttributes=cc;var gc={get paint(){return mc=mc||new rs({"icon-opacity":new Wi(G.paint_symbol["icon-opacity"]),"icon-color":new Wi(G.paint_symbol["icon-color"]),"icon-halo-color":new Wi(G.paint_symbol["icon-halo-color"]),"icon-halo-width":new Wi(G.paint_symbol["icon-halo-width"]),"icon-halo-blur":new Wi(G.paint_symbol["icon-halo-blur"]),"icon-translate":new Ji(G.paint_symbol["icon-translate"]),"icon-translate-anchor":new Ji(G.paint_symbol["icon-translate-anchor"]),"text-opacity":new Wi(G.paint_symbol["text-opacity"]),"text-color":new Wi(G.paint_symbol["text-color"],{runtimeType:pt,getOverride:t=>t.textColor,hasOverride:t=>!!t.textColor}),"text-halo-color":new Wi(G.paint_symbol["text-halo-color"]),"text-halo-width":new Wi(G.paint_symbol["text-halo-width"]),"text-halo-blur":new Wi(G.paint_symbol["text-halo-blur"]),"text-translate":new Ji(G.paint_symbol["text-translate"]),"text-translate-anchor":new Ji(G.paint_symbol["text-translate-anchor"])})},get layout(){return yc=yc||new rs({"symbol-placement":new Ji(G.layout_symbol["symbol-placement"]),"symbol-spacing":new Ji(G.layout_symbol["symbol-spacing"]),"symbol-avoid-edges":new Ji(G.layout_symbol["symbol-avoid-edges"]),"symbol-sort-key":new Wi(G.layout_symbol["symbol-sort-key"]),"symbol-z-order":new Ji(G.layout_symbol["symbol-z-order"]),"icon-allow-overlap":new Ji(G.layout_symbol["icon-allow-overlap"]),"icon-overlap":new Ji(G.layout_symbol["icon-overlap"]),"icon-ignore-placement":new Ji(G.layout_symbol["icon-ignore-placement"]),"icon-optional":new Ji(G.layout_symbol["icon-optional"]),"icon-rotation-alignment":new Ji(G.layout_symbol["icon-rotation-alignment"]),"icon-size":new Wi(G.layout_symbol["icon-size"]),"icon-text-fit":new Ji(G.layout_symbol["icon-text-fit"]),"icon-text-fit-padding":new Ji(G.layout_symbol["icon-text-fit-padding"]),"icon-image":new Wi(G.layout_symbol["icon-image"]),"icon-rotate":new Wi(G.layout_symbol["icon-rotate"]),"icon-padding":new Wi(G.layout_symbol["icon-padding"]),"icon-keep-upright":new Ji(G.layout_symbol["icon-keep-upright"]),"icon-offset":new Wi(G.layout_symbol["icon-offset"]),"icon-anchor":new Wi(G.layout_symbol["icon-anchor"]),"icon-pitch-alignment":new Ji(G.layout_symbol["icon-pitch-alignment"]),"text-pitch-alignment":new Ji(G.layout_symbol["text-pitch-alignment"]),"text-rotation-alignment":new Ji(G.layout_symbol["text-rotation-alignment"]),"text-field":new Wi(G.layout_symbol["text-field"]),"text-font":new Wi(G.layout_symbol["text-font"]),"text-size":new Wi(G.layout_symbol["text-size"]),"text-max-width":new Wi(G.layout_symbol["text-max-width"]),"text-line-height":new Ji(G.layout_symbol["text-line-height"]),"text-letter-spacing":new Wi(G.layout_symbol["text-letter-spacing"]),"text-justify":new Wi(G.layout_symbol["text-justify"]),"text-radial-offset":new Wi(G.layout_symbol["text-radial-offset"]),"text-variable-anchor":new Ji(G.layout_symbol["text-variable-anchor"]),"text-variable-anchor-offset":new Wi(G.layout_symbol["text-variable-anchor-offset"]),"text-anchor":new Wi(G.layout_symbol["text-anchor"]),"text-max-angle":new Ji(G.layout_symbol["text-max-angle"]),"text-writing-mode":new Ji(G.layout_symbol["text-writing-mode"]),"text-rotate":new Wi(G.layout_symbol["text-rotate"]),"text-padding":new Ji(G.layout_symbol["text-padding"]),"text-keep-upright":new Ji(G.layout_symbol["text-keep-upright"]),"text-transform":new Wi(G.layout_symbol["text-transform"]),"text-offset":new Wi(G.layout_symbol["text-offset"]),"text-allow-overlap":new Ji(G.layout_symbol["text-allow-overlap"]),"text-overlap":new Ji(G.layout_symbol["text-overlap"]),"text-ignore-placement":new Ji(G.layout_symbol["text-ignore-placement"]),"text-optional":new Ji(G.layout_symbol["text-optional"])})}};class xc{constructor(t){if(void 0===t.property.overrides)throw new Error("overrides must be provided to instantiate FormatSectionOverride class");this.type=t.property.overrides?t.property.overrides.runtimeType:lt,this.defaultValue=t;}evaluate(t){if(t.formattedSection){const e=this.defaultValue.property.overrides;if(e&&e.hasOverride(t.formattedSection))return e.getOverride(t.formattedSection)}return t.feature&&t.featureState?this.defaultValue.evaluate(t.feature,t.featureState):this.defaultValue.property.specification.default}eachChild(t){this.defaultValue.isConstant()||t(this.defaultValue.value._styleExpression.expression);}outputDefined(){return !1}serialize(){return null}}wi("FormatSectionOverride",xc,{omit:["defaultValue"]});class vc extends is{constructor(t){super(t,gc);}recalculate(t,e){if(super.recalculate(t,e),"auto"===this.layout.get("icon-rotation-alignment")&&(this.layout._values["icon-rotation-alignment"]="point"!==this.layout.get("symbol-placement")?"map":"viewport"),"auto"===this.layout.get("text-rotation-alignment")&&(this.layout._values["text-rotation-alignment"]="point"!==this.layout.get("symbol-placement")?"map":"viewport"),"auto"===this.layout.get("text-pitch-alignment")&&(this.layout._values["text-pitch-alignment"]="map"===this.layout.get("text-rotation-alignment")?"map":"viewport"),"auto"===this.layout.get("icon-pitch-alignment")&&(this.layout._values["icon-pitch-alignment"]=this.layout.get("icon-rotation-alignment")),"point"===this.layout.get("symbol-placement")){const t=this.layout.get("text-writing-mode");if(t){const e=[];for(const r of t)e.indexOf(r)<0&&e.push(r);this.layout._values["text-writing-mode"]=e;}else this.layout._values["text-writing-mode"]=["horizontal"];}this._setPaintOverrides();}getValueAndResolveTokens(t,e,r,n){const i=this.layout.get(t).evaluate(e,{},r,n),s=this._unevaluatedLayout._values[t];return s.isDataDriven()||vn(s.value)||!i?i:function(t,e){return e.replace(/{([^{}]+)}/g,((e,r)=>t&&r in t?String(t[r]):""))}(e.properties,i)}createBucket(t){return new dc(t)}queryRadius(){return 0}queryIntersectsFeature(){throw new Error("Should take a different path in FeatureIndex")}_setPaintOverrides(){for(const t of gc.paint.overridableProperties){if(!vc.hasPaintOverride(this.layout,t))continue;const e=this.paint.get(t),r=new xc(e),n=new xn(r,e.property.specification);let i=null;i="constant"===e.value.kind||"source"===e.value.kind?new wn("source",n):new _n("composite",n,e.value.zoomStops),this.paint._values[t]=new Hi(e.property,i,e.parameters);}}_handleOverridablePaintPropertyUpdate(t,e,r){return !(!this.layout||e.isDataDriven()||r.isDataDriven())&&vc.hasPaintOverride(this.layout,t)}static hasPaintOverride(t,e){const r=t.get("text-field"),n=gc.paint.properties[e];let i=!1;const s=t=>{for(const e of t)if(n.overrides&&n.overrides.hasOverride(e))return void(i=!0)};if("constant"===r.value.kind&&r.value.value instanceof Yt)s(r.value.value.sections);else if("source"===r.value.kind){const t=e=>{i||(e instanceof se&&ne(e.value)===mt?s(e.value.sections):e instanceof Ze?s(e.sections):e.eachChild(t));},e=r.value;e._styleExpression&&t(e._styleExpression.expression);}return i}}let bc;var wc={get paint(){return bc=bc||new rs({"background-color":new Ji(G.paint_background["background-color"]),"background-pattern":new ts(G.paint_background["background-pattern"]),"background-opacity":new Ji(G.paint_background["background-opacity"])})}};class _c extends is{constructor(t){super(t,wc);}}let Ac;var Sc={get paint(){return Ac=Ac||new rs({"raster-opacity":new Ji(G.paint_raster["raster-opacity"]),"raster-hue-rotate":new Ji(G.paint_raster["raster-hue-rotate"]),"raster-brightness-min":new Ji(G.paint_raster["raster-brightness-min"]),"raster-brightness-max":new Ji(G.paint_raster["raster-brightness-max"]),"raster-saturation":new Ji(G.paint_raster["raster-saturation"]),"raster-contrast":new Ji(G.paint_raster["raster-contrast"]),"raster-resampling":new Ji(G.paint_raster["raster-resampling"]),"raster-fade-duration":new Ji(G.paint_raster["raster-fade-duration"])})}};class kc extends is{constructor(t){super(t,Sc);}}class Mc extends is{constructor(t){super(t,{}),this.onAdd=t=>{this.implementation.onAdd&&this.implementation.onAdd(t,t.painter.context.gl);},this.onRemove=t=>{this.implementation.onRemove&&this.implementation.onRemove(t,t.painter.context.gl);},this.implementation=t;}is3D(){return "3d"===this.implementation.renderingMode}hasOffscreenPass(){return void 0!==this.implementation.prerender}recalculate(){}updateTransitions(){}hasTransition(){return !1}serialize(){throw new Error("Custom layers cannot be serialized")}}class Ic{constructor(t){this._methodToThrottle=t,this._triggered=!1,"undefined"!=typeof MessageChannel&&(this._channel=new MessageChannel,this._channel.port2.onmessage=()=>{this._triggered=!1,this._methodToThrottle();});}trigger(){this._triggered||(this._triggered=!0,this._channel?this._channel.port1.postMessage(!0):setTimeout((()=>{this._triggered=!1,this._methodToThrottle();}),0));}remove(){delete this._channel,this._methodToThrottle=()=>{};}}const zc=6371008.8;class Pc{constructor(t,e){if(isNaN(t)||isNaN(e))throw new Error(`Invalid LngLat object: (${t}, ${e})`);if(this.lng=+t,this.lat=+e,this.lat>90||this.lat<-90)throw new Error("Invalid LngLat latitude value: must be between -90 and 90")}wrap(){return new Pc(m(this.lng,-180,180),this.lat)}toArray(){return [this.lng,this.lat]}toString(){return `LngLat(${this.lng}, ${this.lat})`}distanceTo(t){const e=Math.PI/180,r=this.lat*e,n=t.lat*e,i=Math.sin(r)*Math.sin(n)+Math.cos(r)*Math.cos(n)*Math.cos((t.lng-this.lng)*e);return zc*Math.acos(Math.min(i,1))}static convert(t){if(t instanceof Pc)return t;if(Array.isArray(t)&&(2===t.length||3===t.length))return new Pc(Number(t[0]),Number(t[1]));if(!Array.isArray(t)&&"object"==typeof t&&null!==t)return new Pc(Number("lng"in t?t.lng:t.lon),Number(t.lat));throw new Error("`LngLatLike` argument must be specified as a LngLat instance, an object {lng: <lng>, lat: <lat>}, an object {lon: <lng>, lat: <lat>}, or an array of [<lng>, <lat>]")}}const Cc=2*Math.PI*zc;function Bc(t){return Cc*Math.cos(t*Math.PI/180)}function Vc(t){return (180+t)/360}function Ec(t){return (180-180/Math.PI*Math.log(Math.tan(Math.PI/4+t*Math.PI/360)))/360}function Fc(t,e){return t/Bc(e)}function Tc(t){return 360/Math.PI*Math.atan(Math.exp((180-360*t)*Math.PI/180))-90}class $c{constructor(t,e,r=0){this.x=+t,this.y=+e,this.z=+r;}static fromLngLat(t,e=0){const r=Pc.convert(t);return new $c(Vc(r.lng),Ec(r.lat),Fc(e,r.lat))}toLngLat(){return new Pc(360*this.x-180,Tc(this.y))}toAltitude(){return this.z*Bc(Tc(this.y))}meterInMercatorCoordinateUnits(){return 1/Cc*(t=Tc(this.y),1/Math.cos(t*Math.PI/180));var t;}}function Lc(t,e,r){var n=2*Math.PI*6378137/256/Math.pow(2,r);return [t*n-2*Math.PI*6378137/2,e*n-2*Math.PI*6378137/2]}class Dc{constructor(t,e,r){if(!function(t,e,r){return !(t<0||t>25||r<0||r>=Math.pow(2,t)||e<0||e>=Math.pow(2,t))}(t,e,r))throw new Error(`x=${e}, y=${r}, z=${t} outside of bounds. 0<=x<${Math.pow(2,t)}, 0<=y<${Math.pow(2,t)} 0<=z<=25 `);this.z=t,this.x=e,this.y=r,this.key=Rc(0,t,t,e,r);}equals(t){return this.z===t.z&&this.x===t.x&&this.y===t.y}url(t,e,r){const n=(s=this.y,a=this.z,o=Lc(256*(i=this.x),256*(s=Math.pow(2,a)-s-1),a),l=Lc(256*(i+1),256*(s+1),a),o[0]+","+o[1]+","+l[0]+","+l[1]);var i,s,a,o,l;const u=function(t,e,r){let n,i="";for(let s=t;s>0;s--)n=1<<s-1,i+=(e&n?1:0)+(r&n?2:0);return i}(this.z,this.x,this.y);return t[(this.x+this.y)%t.length].replace(/{prefix}/g,(this.x%16).toString(16)+(this.y%16).toString(16)).replace(/{z}/g,String(this.z)).replace(/{x}/g,String(this.x)).replace(/{y}/g,String("tms"===r?Math.pow(2,this.z)-this.y-1:this.y)).replace(/{ratio}/g,e>1?"@2x":"").replace(/{quadkey}/g,u).replace(/{bbox-epsg-3857}/g,n)}isChildOf(t){const e=this.z-t.z;return e>0&&t.x===this.x>>e&&t.y===this.y>>e}getTilePoint(t){const e=Math.pow(2,this.z);return new s((t.x*e-this.x)*$a,(t.y*e-this.y)*$a)}toString(){return `${this.z}/${this.x}/${this.y}`}}class Oc{constructor(t,e){this.wrap=t,this.canonical=e,this.key=Rc(t,e.z,e.z,e.x,e.y);}}class jc{constructor(t,e,r,n,i){if(t<r)throw new Error(`overscaledZ should be >= z; overscaledZ = ${t}; z = ${r}`);this.overscaledZ=t,this.wrap=e,this.canonical=new Dc(r,+n,+i),this.key=Rc(e,t,r,n,i);}clone(){return new jc(this.overscaledZ,this.wrap,this.canonical.z,this.canonical.x,this.canonical.y)}equals(t){return this.overscaledZ===t.overscaledZ&&this.wrap===t.wrap&&this.canonical.equals(t.canonical)}scaledTo(t){if(t>this.overscaledZ)throw new Error(`targetZ > this.overscaledZ; targetZ = ${t}; overscaledZ = ${this.overscaledZ}`);const e=this.canonical.z-t;return t>this.canonical.z?new jc(t,this.wrap,this.canonical.z,this.canonical.x,this.canonical.y):new jc(t,this.wrap,t,this.canonical.x>>e,this.canonical.y>>e)}calculateScaledKey(t,e){if(t>this.overscaledZ)throw new Error(`targetZ > this.overscaledZ; targetZ = ${t}; overscaledZ = ${this.overscaledZ}`);const r=this.canonical.z-t;return t>this.canonical.z?Rc(this.wrap*+e,t,this.canonical.z,this.canonical.x,this.canonical.y):Rc(this.wrap*+e,t,t,this.canonical.x>>r,this.canonical.y>>r)}isChildOf(t){if(t.wrap!==this.wrap)return !1;const e=this.canonical.z-t.canonical.z;return 0===t.overscaledZ||t.overscaledZ<this.overscaledZ&&t.canonical.x===this.canonical.x>>e&&t.canonical.y===this.canonical.y>>e}children(t){if(this.overscaledZ>=t)return [new jc(this.overscaledZ+1,this.wrap,this.canonical.z,this.canonical.x,this.canonical.y)];const e=this.canonical.z+1,r=2*this.canonical.x,n=2*this.canonical.y;return [new jc(e,this.wrap,e,r,n),new jc(e,this.wrap,e,r+1,n),new jc(e,this.wrap,e,r,n+1),new jc(e,this.wrap,e,r+1,n+1)]}isLessThan(t){return this.wrap<t.wrap||!(this.wrap>t.wrap)&&(this.overscaledZ<t.overscaledZ||!(this.overscaledZ>t.overscaledZ)&&(this.canonical.x<t.canonical.x||!(this.canonical.x>t.canonical.x)&&this.canonical.y<t.canonical.y))}wrapped(){return new jc(this.overscaledZ,0,this.canonical.z,this.canonical.x,this.canonical.y)}unwrapTo(t){return new jc(this.overscaledZ,t,this.canonical.z,this.canonical.x,this.canonical.y)}overscaleFactor(){return Math.pow(2,this.overscaledZ-this.canonical.z)}toUnwrapped(){return new Oc(this.wrap,this.canonical)}toString(){return `${this.overscaledZ}/${this.canonical.x}/${this.canonical.y}`}getTilePoint(t){return this.canonical.getTilePoint(new $c(t.x-this.wrap,t.y))}}function Rc(t,e,r,n,i){(t*=2)<0&&(t=-1*t-1);const s=1<<r;return (s*s*t+s*i+n).toString(36)+r.toString(36)+e.toString(36)}wi("CanonicalTileID",Dc),wi("OverscaledTileID",jc,{omit:["posMatrix"]});class Uc{constructor(t,e,r,n=1,i=1,s=1,a=0){if(this.uid=t,e.height!==e.width)throw new RangeError("DEM tiles must be square");if(r&&!["mapbox","terrarium","custom"].includes(r))return void A(`"${r}" is not a valid encoding type. Valid types include "mapbox", "terrarium" and "custom".`);this.stride=e.height;const o=this.dim=e.height-2;switch(this.data=new Uint32Array(e.data.buffer),r){case"terrarium":this.redFactor=256,this.greenFactor=1,this.blueFactor=1/256,this.baseShift=32768;break;case"custom":this.redFactor=n,this.greenFactor=i,this.blueFactor=s,this.baseShift=a;break;default:this.redFactor=6553.6,this.greenFactor=25.6,this.blueFactor=.1,this.baseShift=1e4;}for(let t=0;t<o;t++)this.data[this._idx(-1,t)]=this.data[this._idx(0,t)],this.data[this._idx(o,t)]=this.data[this._idx(o-1,t)],this.data[this._idx(t,-1)]=this.data[this._idx(t,0)],this.data[this._idx(t,o)]=this.data[this._idx(t,o-1)];this.data[this._idx(-1,-1)]=this.data[this._idx(0,0)],this.data[this._idx(o,-1)]=this.data[this._idx(o-1,0)],this.data[this._idx(-1,o)]=this.data[this._idx(0,o-1)],this.data[this._idx(o,o)]=this.data[this._idx(o-1,o-1)],this.min=Number.MAX_SAFE_INTEGER,this.max=Number.MIN_SAFE_INTEGER;for(let t=0;t<o;t++)for(let e=0;e<o;e++){const r=this.get(t,e);r>this.max&&(this.max=r),r<this.min&&(this.min=r);}}get(t,e){const r=new Uint8Array(this.data.buffer),n=4*this._idx(t,e);return this.unpack(r[n],r[n+1],r[n+2])}getUnpackVector(){return [this.redFactor,this.greenFactor,this.blueFactor,this.baseShift]}_idx(t,e){if(t<-1||t>=this.dim+1||e<-1||e>=this.dim+1)throw new RangeError("out of range source coordinates for DEM data");return (e+1)*this.stride+(t+1)}unpack(t,e,r){return t*this.redFactor+e*this.greenFactor+r*this.blueFactor-this.baseShift}getPixels(){return new Ao({width:this.stride,height:this.stride},new Uint8Array(this.data.buffer))}backfillBorder(t,e,r){if(this.dim!==t.dim)throw new Error("dem dimension mismatch");let n=e*this.dim,i=e*this.dim+this.dim,s=r*this.dim,a=r*this.dim+this.dim;switch(e){case-1:n=i-1;break;case 1:i=n+1;}switch(r){case-1:s=a-1;break;case 1:a=s+1;}const o=-e*this.dim,l=-r*this.dim;for(let e=s;e<a;e++)for(let r=n;r<i;r++)this.data[this._idx(r,e)]=t.data[this._idx(r+o,e+l)];}}wi("DEMData",Uc);class qc{constructor(t){this._stringToNumber={},this._numberToString=[];for(let e=0;e<t.length;e++){const r=t[e];this._stringToNumber[r]=e,this._numberToString[e]=r;}}encode(t){return this._stringToNumber[t]}decode(t){if(t>=this._numberToString.length)throw new Error(`Out of bounds. Index requested n=${t} can't be >= this._numberToString.length ${this._numberToString.length}`);return this._numberToString[t]}}class Nc{constructor(t,e,r,n,i){this.type="Feature",this._vectorTileFeature=t,t._z=e,t._x=r,t._y=n,this.properties=t.properties,this.id=i;}get geometry(){return void 0===this._geometry&&(this._geometry=this._vectorTileFeature.toGeoJSON(this._vectorTileFeature._x,this._vectorTileFeature._y,this._vectorTileFeature._z).geometry),this._geometry}set geometry(t){this._geometry=t;}toJSON(){const t={geometry:this.geometry};for(const e in this)"_geometry"!==e&&"_vectorTileFeature"!==e&&(t[e]=this[e]);return t}}class Zc{constructor(t,e){this.tileID=t,this.x=t.canonical.x,this.y=t.canonical.y,this.z=t.canonical.z,this.grid=new vi($a,16,0),this.grid3D=new vi($a,16,0),this.featureIndexArray=new Ns,this.promoteId=e;}insert(t,e,r,n,i,s){const a=this.featureIndexArray.length;this.featureIndexArray.emplaceBack(r,n,i);const o=s?this.grid3D:this.grid;for(let t=0;t<e.length;t++){const r=e[t],n=[1/0,1/0,-1/0,-1/0];for(let t=0;t<r.length;t++){const e=r[t];n[0]=Math.min(n[0],e.x),n[1]=Math.min(n[1],e.y),n[2]=Math.max(n[2],e.x),n[3]=Math.max(n[3],e.y);}n[0]<$a&&n[1]<$a&&n[2]>=0&&n[3]>=0&&o.insert(a,n[0],n[1],n[2],n[3]);}}loadVTLayers(){return this.vtLayers||(this.vtLayers=new fl.VectorTile(new Iu(this.rawTileData)).layers,this.sourceLayerCoder=new qc(this.vtLayers?Object.keys(this.vtLayers).sort():["_geojsonTileLayer"])),this.vtLayers}query(t,e,r,n){this.loadVTLayers();const i=t.params||{},a=$a/t.tileSize/t.scale,o=zn(i.filter),l=t.queryGeometry,u=t.queryPadding*a,c=Kc(l),h=this.grid.query(c.minX-u,c.minY-u,c.maxX+u,c.maxY+u),p=Kc(t.cameraQueryGeometry),f=this.grid3D.query(p.minX-u,p.minY-u,p.maxX+u,p.maxY+u,((e,r,n,i)=>function(t,e,r,n,i){for(const s of t)if(e<=s.x&&r<=s.y&&n>=s.x&&i>=s.y)return !0;const a=[new s(e,r),new s(e,i),new s(n,i),new s(n,r)];if(t.length>2)for(const e of a)if(Wa(t,e))return !0;for(let e=0;e<t.length-1;e++)if(Qa(t[e],t[e+1],a))return !0;return !1}(t.cameraQueryGeometry,e-u,r-u,n+u,i+u)));for(const t of f)h.push(t);h.sort(Xc);const d={};let y;for(let s=0;s<h.length;s++){const u=h[s];if(u===y)continue;y=u;const c=this.featureIndexArray.get(u);let p=null;this.loadMatchingFeature(d,c.bucketIndex,c.sourceLayerIndex,c.featureIndex,o,i.layers,i.availableImages,e,r,n,((e,r,n)=>(p||(p=Oa(e)),r.queryIntersectsFeature(l,e,n,p,this.z,t.transform,a,t.pixelPosMatrix))));}return d}loadMatchingFeature(t,e,r,n,i,s,a,o,l,u,c){const h=this.bucketLayerIDs[e];if(s&&!function(t,e){for(let r=0;r<t.length;r++)if(e.indexOf(t[r])>=0)return !0;return !1}(s,h))return;const p=this.sourceLayerCoder.decode(r),f=this.vtLayers[p].feature(n);if(i.needGeometry){const t=ja(f,!0);if(!i.filter(new Ui(this.tileID.overscaledZ),t,this.tileID.canonical))return}else if(!i.filter(new Ui(this.tileID.overscaledZ),f))return;const d=this.getId(f,p);for(let e=0;e<h.length;e++){const r=h[e];if(s&&s.indexOf(r)<0)continue;const i=o[r];if(!i)continue;let p={};d&&u&&(p=u.getState(i.sourceLayer||"_geojsonTileLayer",d));const y=g({},l[r]);y.paint=Gc(y.paint,i.paint,f,p,a),y.layout=Gc(y.layout,i.layout,f,p,a);const m=!c||c(f,i,p);if(!m)continue;const x=new Nc(f,this.z,this.x,this.y,d);x.layer=y;let v=t[r];void 0===v&&(v=t[r]=[]),v.push({featureIndex:n,feature:x,intersectionZ:m});}}lookupSymbolFeatures(t,e,r,n,i,s,a,o){const l={};this.loadVTLayers();const u=zn(i);for(const i of t)this.loadMatchingFeature(l,r,n,i,u,s,a,o,e);return l}hasLayer(t){for(const e of this.bucketLayerIDs)for(const r of e)if(t===r)return !0;return !1}getId(t,e){let r=t.id;return this.promoteId&&(r=t.properties["string"==typeof this.promoteId?this.promoteId:this.promoteId[e]],"boolean"==typeof r&&(r=Number(r))),r}}function Gc(t,e,r,n,i){return v(t,((t,s)=>{const a=e instanceof Yi?e.get(s):null;return a&&a.evaluate?a.evaluate(r,n,i):a}))}function Kc(t){let e=1/0,r=1/0,n=-1/0,i=-1/0;for(const s of t)e=Math.min(e,s.x),r=Math.min(r,s.y),n=Math.max(n,s.x),i=Math.max(i,s.y);return {minX:e,minY:r,maxX:n,maxY:i}}function Xc(t,e){return e-t}function Hc(t,e,r,n,i){const a=[];for(let o=0;o<t.length;o++){const l=t[o];let u;for(let t=0;t<l.length-1;t++){let o=l[t],c=l[t+1];o.x<e&&c.x<e||(o.x<e?o=new s(e,o.y+(e-o.x)/(c.x-o.x)*(c.y-o.y))._round():c.x<e&&(c=new s(e,o.y+(e-o.x)/(c.x-o.x)*(c.y-o.y))._round()),o.y<r&&c.y<r||(o.y<r?o=new s(o.x+(r-o.y)/(c.y-o.y)*(c.x-o.x),r)._round():c.y<r&&(c=new s(o.x+(r-o.y)/(c.y-o.y)*(c.x-o.x),r)._round()),o.x>=n&&c.x>=n||(o.x>=n?o=new s(n,o.y+(n-o.x)/(c.x-o.x)*(c.y-o.y))._round():c.x>=n&&(c=new s(n,o.y+(n-o.x)/(c.x-o.x)*(c.y-o.y))._round()),o.y>=i&&c.y>=i||(o.y>=i?o=new s(o.x+(i-o.y)/(c.y-o.y)*(c.x-o.x),i)._round():c.y>=i&&(c=new s(o.x+(i-o.y)/(c.y-o.y)*(c.x-o.x),i)._round()),u&&o.equals(u[u.length-1])||(u=[o],a.push(u)),u.push(c)))));}}return a}wi("FeatureIndex",Zc,{omit:["rawTileData","sourceLayerCoder"]});class Yc extends s{constructor(t,e,r,n){super(t,e),this.angle=r,void 0!==n&&(this.segment=n);}clone(){return new Yc(this.x,this.y,this.angle,this.segment)}}function Jc(t,e,r,n,i){if(void 0===e.segment||0===r)return !0;let s=e,a=e.segment+1,o=0;for(;o>-r/2;){if(a--,a<0)return !1;o-=t[a].dist(s),s=t[a];}o+=t[a].dist(t[a+1]),a++;const l=[];let u=0;for(;o<r/2;){const e=t[a],r=t[a+1];if(!r)return !1;let s=t[a-1].angleTo(e)-e.angleTo(r);for(s=Math.abs((s+3*Math.PI)%(2*Math.PI)-Math.PI),l.push({distance:o,angleDelta:s}),u+=s;o-l[0].distance>n;)u-=l.shift().angleDelta;if(u>i)return !1;a++,o+=e.dist(r);}return !0}function Wc(t){let e=0;for(let r=0;r<t.length-1;r++)e+=t[r].dist(t[r+1]);return e}function Qc(t,e,r){return t?.6*e*r:0}function th(t,e){return Math.max(t?t.right-t.left:0,e?e.right-e.left:0)}function eh(t,e,r,n,i,s){const a=Qc(r,i,s),o=th(r,n)*s;let l=0;const u=Wc(t)/2;for(let r=0;r<t.length-1;r++){const n=t[r],i=t[r+1],s=n.dist(i);if(l+s>u){const 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o={x:0,y:0,w:t.bitmap.width+2,h:t.bitmap.height+2};i.push(o),r[e]={rect:o,metrics:t.metrics};}}const{w:s,h:r}=e.p(i),n=new e.o({width:s||1,height:r||1});for(const i in t){const s=t[i];for(const t in s){const r=s[+t];if(!r||0===r.bitmap.width||0===r.bitmap.height)continue;const a=o[i][t].rect;e.o.copy(r.bitmap,n,{x:0,y:0},{x:a.x+1,y:a.y+1},r.bitmap);}}this.image=n,this.positions=o;}}e.bl("GlyphAtlas",o);class i{constructor(t){this.tileID=new e.S(t.tileID.overscaledZ,t.tileID.wrap,t.tileID.canonical.z,t.tileID.canonical.x,t.tileID.canonical.y),this.uid=t.uid,this.zoom=t.zoom,this.pixelRatio=t.pixelRatio,this.tileSize=t.tileSize,this.source=t.source,this.overscaling=this.tileID.overscaleFactor(),this.showCollisionBoxes=t.showCollisionBoxes,this.collectResourceTiming=!!t.collectResourceTiming,this.returnDependencies=!!t.returnDependencies,this.promoteId=t.promoteId,this.inFlightDependencies=[];}parse(t,i,r,n){return e._(this,void 0,void 0,(function*(){this.status="parsing",this.data=t,this.collisionBoxArray=new e.a5;const a=new e.bm(Object.keys(t.layers).sort()),l=new e.bn(this.tileID,this.promoteId);l.bucketLayerIDs=[];const c={},u={featureIndex:l,iconDependencies:{},patternDependencies:{},glyphDependencies:{},availableImages:r},h=i.familiesBySource[this.source];for(const o in h){const i=t.layers[o];if(!i)continue;1===i.version&&e.w(`Vector tile source "${this.source}" layer "${o}" does not use vector tile spec v2 and therefore may have some rendering errors.`);const n=a.encode(o),d=[];for(let e=0;e<i.length;e++){const t=i.feature(e),s=l.getId(t,o);d.push({feature:t,id:s,index:e,sourceLayerIndex:n});}for(const t of h[o]){const o=t[0];o.source!==this.source&&e.w(`layer.source = ${o.source} does not equal this.source = ${this.source}`),o.minzoom&&this.zoom<Math.floor(o.minzoom)||o.maxzoom&&this.zoom>=o.maxzoom||"none"!==o.visibility&&(s(t,this.zoom,r),(c[o.id]=o.createBucket({index:l.bucketLayerIDs.length,layers:t,zoom:this.zoom,pixelRatio:this.pixelRatio,overscaling:this.overscaling,collisionBoxArray:this.collisionBoxArray,sourceLayerIndex:n,sourceID:this.source})).populate(d,u,this.tileID.canonical),l.bucketLayerIDs.push(t.map((e=>e.id))));}}const d=e.aF(u.glyphDependencies,(e=>Object.keys(e).map(Number)));this.inFlightDependencies.forEach((e=>null==e?void 0:e.abort())),this.inFlightDependencies=[];let f=Promise.resolve({});if(Object.keys(d).length){const e=new AbortController;this.inFlightDependencies.push(e),f=n.sendAsync({type:"GG",data:{stacks:d,source:this.source,tileID:this.tileID,type:"glyphs"}},e);}const g=Object.keys(u.iconDependencies);let p=Promise.resolve({});if(g.length){const e=new AbortController;this.inFlightDependencies.push(e),p=n.sendAsync({type:"GI",data:{icons:g,source:this.source,tileID:this.tileID,type:"icons"}},e);}const m=Object.keys(u.patternDependencies);let y=Promise.resolve({});if(m.length){const e=new AbortController;this.inFlightDependencies.push(e),y=n.sendAsync({type:"GI",data:{icons:m,source:this.source,tileID:this.tileID,type:"patterns"}},e);}const[v,w,x]=yield Promise.all([f,p,y]),b=new o(v),S=new e.bo(w,x);for(const t in c){const o=c[t];o instanceof e.a6?(s(o.layers,this.zoom,r),e.bp({bucket:o,glyphMap:v,glyphPositions:b.positions,imageMap:w,imagePositions:S.iconPositions,showCollisionBoxes:this.showCollisionBoxes,canonical:this.tileID.canonical})):o.hasPattern&&(o instanceof e.bq||o instanceof e.br||o instanceof e.bs)&&(s(o.layers,this.zoom,r),o.addFeatures(u,this.tileID.canonical,S.patternPositions));}return this.status="done",{buckets:Object.values(c).filter((e=>!e.isEmpty())),featureIndex:l,collisionBoxArray:this.collisionBoxArray,glyphAtlasImage:b.image,imageAtlas:S,glyphMap:this.returnDependencies?v:null,iconMap:this.returnDependencies?w:null,glyphPositions:this.returnDependencies?b.positions:null}}))}}function s(t,o,i){const s=new e.z(o);for(const e of t)e.recalculate(s,i);}class r{constructor(e,t,o){this.actor=e,this.layerIndex=t,this.availableImages=o,this.fetching={},this.loading={},this.loaded={};}loadVectorTile(t,o){return e._(this,void 0,void 0,(function*(){const i=yield e.l(t.request,o);try{return {vectorTile:new e.bt.VectorTile(new e.bu(i.data)),rawData:i.data,cacheControl:i.cacheControl,expires:i.expires}}catch(e){const o=new Uint8Array(i.data);let s=`Unable to parse the tile at ${t.request.url}, `;throw s+=31===o[0]&&139===o[1]?"please make sure the data is not gzipped and that you have configured the relevant header in the server":`got error: ${e.message}`,new Error(s)}}))}loadTile(t){return e._(this,void 0,void 0,(function*(){const o=t.uid,s=!!(t&&t.request&&t.request.collectResourceTiming)&&new e.bv(t.request),r=new i(t);this.loading[o]=r;const n=new AbortController;r.abort=n;try{const i=yield this.loadVectorTile(t,n);if(delete this.loading[o],!i)return null;const a=i.rawData,l={};i.expires&&(l.expires=i.expires),i.cacheControl&&(l.cacheControl=i.cacheControl);const c={};if(s){const e=s.finish();e&&(c.resourceTiming=JSON.parse(JSON.stringify(e)));}r.vectorTile=i.vectorTile;const u=r.parse(i.vectorTile,this.layerIndex,this.availableImages,this.actor);this.loaded[o]=r,this.fetching[o]={rawTileData:a,cacheControl:l,resourceTiming:c};try{const t=yield u;return e.e({rawTileData:a.slice(0)},t,l,c)}finally{delete this.fetching[o];}}catch(e){throw delete this.loading[o],r.status="done",this.loaded[o]=r,e}}))}reloadTile(t){return e._(this,void 0,void 0,(function*(){const o=t.uid;if(!this.loaded||!this.loaded[o])throw new Error("Should not be trying to reload a tile that was never loaded or has been removed");const i=this.loaded[o];if(i.showCollisionBoxes=t.showCollisionBoxes,"parsing"===i.status){const t=yield i.parse(i.vectorTile,this.layerIndex,this.availableImages,this.actor);let s;if(this.fetching[o]){const{rawTileData:i,cacheControl:r,resourceTiming:n}=this.fetching[o];delete this.fetching[o],s=e.e({rawTileData:i.slice(0)},t,r,n);}else s=t;return s}if("done"===i.status&&i.vectorTile)return i.parse(i.vectorTile,this.layerIndex,this.availableImages,this.actor)}))}abortTile(t){return e._(this,void 0,void 0,(function*(){const e=this.loading,o=t.uid;e&&e[o]&&e[o].abort&&(e[o].abort.abort(),delete e[o]);}))}removeTile(t){return e._(this,void 0,void 0,(function*(){this.loaded&&this.loaded[t.uid]&&delete this.loaded[t.uid];}))}}class n{constructor(){this.loaded={};}loadTile(t){return e._(this,void 0,void 0,(function*(){const{uid:o,encoding:i,rawImageData:s,redFactor:r,greenFactor:n,blueFactor:a,baseShift:l}=t,c=s.width+2,u=s.height+2,h=e.b(s)?new e.R({width:c,height:u},yield e.bw(s,-1,-1,c,u)):s,d=new e.bx(o,h,i,r,n,a,l);return this.loaded=this.loaded||{},this.loaded[o]=d,d}))}removeTile(e){const t=this.loaded,o=e.uid;t&&t[o]&&delete t[o];}}function a(e,t){if(0!==e.length){l(e[0],t);for(var o=1;o<e.length;o++)l(e[o],!t);}}function l(e,t){for(var o=0,i=0,s=0,r=e.length,n=r-1;s<r;n=s++){var a=(e[s][0]-e[n][0])*(e[n][1]+e[s][1]),l=o+a;i+=Math.abs(o)>=Math.abs(a)?o-l+a:a-l+o,o=l;}o+i>=0!=!!t&&e.reverse();}var c=e.by((function e(t,o){var i,s=t&&t.type;if("FeatureCollection"===s)for(i=0;i<t.features.length;i++)e(t.features[i],o);else if("GeometryCollection"===s)for(i=0;i<t.geometries.length;i++)e(t.geometries[i],o);else if("Feature"===s)e(t.geometry,o);else if("Polygon"===s)a(t.coordinates,o);else if("MultiPolygon"===s)for(i=0;i<t.coordinates.length;i++)a(t.coordinates[i],o);return t}));const u=e.bt.VectorTileFeature.prototype.toGeoJSON;var h={exports:{}},d=e.bz,f=e.bt.VectorTileFeature,g=p;function p(e,t){this.options=t||{},this.features=e,this.length=e.length;}function m(e,t){this.id="number"==typeof e.id?e.id:void 0,this.type=e.type,this.rawGeometry=1===e.type?[e.geometry]:e.geometry,this.properties=e.tags,this.extent=t||4096;}p.prototype.feature=function(e){return new m(this.features[e],this.options.extent)},m.prototype.loadGeometry=function(){var e=this.rawGeometry;this.geometry=[];for(var t=0;t<e.length;t++){for(var o=e[t],i=[],s=0;s<o.length;s++)i.push(new d(o[s][0],o[s][1]));this.geometry.push(i);}return this.geometry},m.prototype.bbox=function(){this.geometry||this.loadGeometry();for(var e=this.geometry,t=1/0,o=-1/0,i=1/0,s=-1/0,r=0;r<e.length;r++)for(var n=e[r],a=0;a<n.length;a++){var l=n[a];t=Math.min(t,l.x),o=Math.max(o,l.x),i=Math.min(i,l.y),s=Math.max(s,l.y);}return [t,i,o,s]},m.prototype.toGeoJSON=f.prototype.toGeoJSON;var y=e.bA,v=g;function w(e){var t=new y;return function(e,t){for(var o in e.layers)t.writeMessage(3,x,e.layers[o]);}(e,t),t.finish()}function x(e,t){var o;t.writeVarintField(15,e.version||1),t.writeStringField(1,e.name||""),t.writeVarintField(5,e.extent||4096);var i={keys:[],values:[],keycache:{},valuecache:{}};for(o=0;o<e.length;o++)i.feature=e.feature(o),t.writeMessage(2,b,i);var s=i.keys;for(o=0;o<s.length;o++)t.writeStringField(3,s[o]);var r=i.values;for(o=0;o<r.length;o++)t.writeMessage(4,P,r[o]);}function b(e,t){var o=e.feature;void 0!==o.id&&t.writeVarintField(1,o.id),t.writeMessage(2,S,e),t.writeVarintField(3,o.type),t.writeMessage(4,I,o);}function S(e,t){var o=e.feature,i=e.keys,s=e.values,r=e.keycache,n=e.valuecache;for(var a in o.properties){var l=o.properties[a],c=r[a];if(null!==l){void 0===c&&(i.push(a),r[a]=c=i.length-1),t.writeVarint(c);var u=typeof l;"string"!==u&&"boolean"!==u&&"number"!==u&&(l=JSON.stringify(l));var h=u+":"+l,d=n[h];void 0===d&&(s.push(l),n[h]=d=s.length-1),t.writeVarint(d);}}}function _(e,t){return (t<<3)+(7&e)}function M(e){return e<<1^e>>31}function I(e,t){for(var o=e.loadGeometry(),i=e.type,s=0,r=0,n=o.length,a=0;a<n;a++){var l=o[a],c=1;1===i&&(c=l.length),t.writeVarint(_(1,c));for(var u=3===i?l.length-1:l.length,h=0;h<u;h++){1===h&&1!==i&&t.writeVarint(_(2,u-1));var d=l[h].x-s,f=l[h].y-r;t.writeVarint(M(d)),t.writeVarint(M(f)),s+=d,r+=f;}3===i&&t.writeVarint(_(7,1));}}function P(e,t){var o=typeof e;"string"===o?t.writeStringField(1,e):"boolean"===o?t.writeBooleanField(7,e):"number"===o&&(e%1!=0?t.writeDoubleField(3,e):e<0?t.writeSVarintField(6,e):t.writeVarintField(5,e));}h.exports=w,h.exports.fromVectorTileJs=w,h.exports.fromGeojsonVt=function(e,t){t=t||{};var o={};for(var i in e)o[i]=new v(e[i].features,t),o[i].name=i,o[i].version=t.version,o[i].extent=t.extent;return w({layers:o})},h.exports.GeoJSONWrapper=v;var k=e.by(h.exports);const T={minZoom:0,maxZoom:16,minPoints:2,radius:40,extent:512,nodeSize:64,log:!1,generateId:!1,reduce:null,map:e=>e},D=Math.fround||(C=new Float32Array(1),e=>(C[0]=+e,C[0]));var C;const L=3,O=5,F=6;class z{constructor(e){this.options=Object.assign(Object.create(T),e),this.trees=new Array(this.options.maxZoom+1),this.stride=this.options.reduce?7:6,this.clusterProps=[];}load(e){const{log:t,minZoom:o,maxZoom:i}=this.options;t&&console.time("total time");const s=`prepare ${e.length} points`;t&&console.time(s),this.points=e;const r=[];for(let t=0;t<e.length;t++){const o=e[t];if(!o.geometry)continue;const[i,s]=o.geometry.coordinates,n=D(G(i)),a=D(j(s));r.push(n,a,1/0,t,-1,1),this.options.reduce&&r.push(0);}let n=this.trees[i+1]=this._createTree(r);t&&console.timeEnd(s);for(let e=i;e>=o;e--){const o=+Date.now();n=this.trees[e]=this._createTree(this._cluster(n,e)),t&&console.log("z%d: %d clusters in %dms",e,n.numItems,+Date.now()-o);}return t&&console.timeEnd("total time"),this}getClusters(e,t){let o=((e[0]+180)%360+360)%360-180;const i=Math.max(-90,Math.min(90,e[1]));let s=180===e[2]?180:((e[2]+180)%360+360)%360-180;const r=Math.max(-90,Math.min(90,e[3]));if(e[2]-e[0]>=360)o=-180,s=180;else if(o>s){const e=this.getClusters([o,i,180,r],t),n=this.getClusters([-180,i,s,r],t);return e.concat(n)}const n=this.trees[this._limitZoom(t)],a=n.range(G(o),j(r),G(s),j(i)),l=n.data,c=[];for(const e of a){const t=this.stride*e;c.push(l[t+O]>1?A(l,t,this.clusterProps):this.points[l[t+L]]);}return c}getChildren(e){const t=this._getOriginId(e),o=this._getOriginZoom(e),i="No cluster with the specified id.",s=this.trees[o];if(!s)throw new Error(i);const r=s.data;if(t*this.stride>=r.length)throw new Error(i);const n=this.options.radius/(this.options.extent*Math.pow(2,o-1)),a=s.within(r[t*this.stride],r[t*this.stride+1],n),l=[];for(const t of a){const o=t*this.stride;r[o+4]===e&&l.push(r[o+O]>1?A(r,o,this.clusterProps):this.points[r[o+L]]);}if(0===l.length)throw new Error(i);return l}getLeaves(e,t,o){const i=[];return this._appendLeaves(i,e,t=t||10,o=o||0,0),i}getTile(e,t,o){const i=this.trees[this._limitZoom(e)],s=Math.pow(2,e),{extent:r,radius:n}=this.options,a=n/r,l=(o-a)/s,c=(o+1+a)/s,u={features:[]};return this._addTileFeatures(i.range((t-a)/s,l,(t+1+a)/s,c),i.data,t,o,s,u),0===t&&this._addTileFeatures(i.range(1-a/s,l,1,c),i.data,s,o,s,u),t===s-1&&this._addTileFeatures(i.range(0,l,a/s,c),i.data,-1,o,s,u),u.features.length?u:null}getClusterExpansionZoom(e){let t=this._getOriginZoom(e)-1;for(;t<=this.options.maxZoom;){const o=this.getChildren(e);if(t++,1!==o.length)break;e=o[0].properties.cluster_id;}return t}_appendLeaves(e,t,o,i,s){const r=this.getChildren(t);for(const t of r){const r=t.properties;if(r&&r.cluster?s+r.point_count<=i?s+=r.point_count:s=this._appendLeaves(e,r.cluster_id,o,i,s):s<i?s++:e.push(t),e.length===o)break}return s}_createTree(t){const o=new e.av(t.length/this.stride|0,this.options.nodeSize,Float32Array);for(let e=0;e<t.length;e+=this.stride)o.add(t[e],t[e+1]);return o.finish(),o.data=t,o}_addTileFeatures(e,t,o,i,s,r){for(const n of e){const e=n*this.stride,a=t[e+O]>1;let l,c,u;if(a)l=E(t,e,this.clusterProps),c=t[e],u=t[e+1];else {const o=this.points[t[e+L]];l=o.properties;const[i,s]=o.geometry.coordinates;c=G(i),u=j(s);}const h={type:1,geometry:[[Math.round(this.options.extent*(c*s-o)),Math.round(this.options.extent*(u*s-i))]],tags:l};let d;d=a||this.options.generateId?t[e+L]:this.points[t[e+L]].id,void 0!==d&&(h.id=d),r.features.push(h);}}_limitZoom(e){return Math.max(this.options.minZoom,Math.min(Math.floor(+e),this.options.maxZoom+1))}_cluster(e,t){const{radius:o,extent:i,reduce:s,minPoints:r}=this.options,n=o/(i*Math.pow(2,t)),a=e.data,l=[],c=this.stride;for(let o=0;o<a.length;o+=c){if(a[o+2]<=t)continue;a[o+2]=t;const i=a[o],u=a[o+1],h=e.within(a[o],a[o+1],n),d=a[o+O];let f=d;for(const e of h){const o=e*c;a[o+2]>t&&(f+=a[o+O]);}if(f>d&&f>=r){let e,r=i*d,n=u*d,g=-1;const p=((o/c|0)<<5)+(t+1)+this.points.length;for(const i of h){const l=i*c;if(a[l+2]<=t)continue;a[l+2]=t;const u=a[l+O];r+=a[l]*u,n+=a[l+1]*u,a[l+4]=p,s&&(e||(e=this._map(a,o,!0),g=this.clusterProps.length,this.clusterProps.push(e)),s(e,this._map(a,l)));}a[o+4]=p,l.push(r/f,n/f,1/0,p,-1,f),s&&l.push(g);}else {for(let e=0;e<c;e++)l.push(a[o+e]);if(f>1)for(const e of h){const o=e*c;if(!(a[o+2]<=t)){a[o+2]=t;for(let e=0;e<c;e++)l.push(a[o+e]);}}}}return l}_getOriginId(e){return e-this.points.length>>5}_getOriginZoom(e){return (e-this.points.length)%32}_map(e,t,o){if(e[t+O]>1){const i=this.clusterProps[e[t+F]];return o?Object.assign({},i):i}const i=this.points[e[t+L]].properties,s=this.options.map(i);return o&&s===i?Object.assign({},s):s}}function A(e,t,o){return {type:"Feature",id:e[t+L],properties:E(e,t,o),geometry:{type:"Point",coordinates:[(i=e[t],360*(i-.5)),R(e[t+1])]}};var i;}function E(e,t,o){const 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o.removeProperties)Object.prototype.hasOwnProperty.call(t.properties,e)&&delete t.properties[e];if((null===(n=o.addOrUpdateProperties)||void 0===n?void 0:n.length)>0)for(const{key:e,value:i}of o.addOrUpdateProperties)t.properties[e]=i;}}(this._dataUpdateable,t.dataDiff,i),{type:"FeatureCollection",features:Array.from(this._dataUpdateable.values())}}))}removeSource(t){return e._(this,void 0,void 0,(function*(){this._pendingRequest&&this._pendingRequest.abort();}))}getClusterExpansionZoom(e){return this._geoJSONIndex.getClusterExpansionZoom(e.clusterId)}getClusterChildren(e){return this._geoJSONIndex.getChildren(e.clusterId)}getClusterLeaves(e){return this._geoJSONIndex.getLeaves(e.clusterId,e.limit,e.offset)}}class ve{constructor(t){this.self=t,this.actor=new e.F(t),this.layerIndexes={},this.availableImages={},this.workerSources={},this.demWorkerSources={},this.externalWorkerSourceTypes={},this.self.registerWorkerSource=(e,t)=>{if(this.externalWorkerSourceTypes[e])throw new Error(`Worker source with name "${e}" already registered.`);this.externalWorkerSourceTypes[e]=t;},this.self.addProtocol=e.bi,this.self.removeProtocol=e.bj,this.self.registerRTLTextPlugin=t=>{if(e.bD.isParsed())throw new Error("RTL text plugin already registered.");e.bD.setMethods(t);},this.actor.registerMessageHandler("LDT",((e,t)=>this._getDEMWorkerSource(e,t.source).loadTile(t))),this.actor.registerMessageHandler("RDT",((t,o)=>e._(this,void 0,void 0,(function*(){this._getDEMWorkerSource(t,o.source).removeTile(o);})))),this.actor.registerMessageHandler("GCEZ",((t,o)=>e._(this,void 0,void 0,(function*(){return this._getWorkerSource(t,o.type,o.source).getClusterExpansionZoom(o)})))),this.actor.registerMessageHandler("GCC",((t,o)=>e._(this,void 0,void 0,(function*(){return this._getWorkerSource(t,o.type,o.source).getClusterChildren(o)})))),this.actor.registerMessageHandler("GCL",((t,o)=>e._(this,void 0,void 0,(function*(){return this._getWorkerSource(t,o.type,o.source).getClusterLeaves(o)})))),this.actor.registerMessageHandler("LD",((e,t)=>this._getWorkerSource(e,t.type,t.source).loadData(t))),this.actor.registerMessageHandler("GD",((e,t)=>this._getWorkerSource(e,t.type,t.source).getData())),this.actor.registerMessageHandler("LT",((e,t)=>this._getWorkerSource(e,t.type,t.source).loadTile(t))),this.actor.registerMessageHandler("RT",((e,t)=>this._getWorkerSource(e,t.type,t.source).reloadTile(t))),this.actor.registerMessageHandler("AT",((e,t)=>this._getWorkerSource(e,t.type,t.source).abortTile(t))),this.actor.registerMessageHandler("RMT",((e,t)=>this._getWorkerSource(e,t.type,t.source).removeTile(t))),this.actor.registerMessageHandler("RS",((t,o)=>e._(this,void 0,void 0,(function*(){if(!this.workerSources[t]||!this.workerSources[t][o.type]||!this.workerSources[t][o.type][o.source])return;const e=this.workerSources[t][o.type][o.source];delete this.workerSources[t][o.type][o.source],void 0!==e.removeSource&&e.removeSource(o);})))),this.actor.registerMessageHandler("RM",(t=>e._(this,void 0,void 0,(function*(){delete this.layerIndexes[t],delete this.availableImages[t],delete this.workerSources[t],delete this.demWorkerSources[t];})))),this.actor.registerMessageHandler("SR",((t,o)=>e._(this,void 0,void 0,(function*(){this.referrer=o;})))),this.actor.registerMessageHandler("SRPS",((e,t)=>this._syncRTLPluginState(e,t))),this.actor.registerMessageHandler("IS",((t,o)=>e._(this,void 0,void 0,(function*(){this.self.importScripts(o);})))),this.actor.registerMessageHandler("SI",((e,t)=>this._setImages(e,t))),this.actor.registerMessageHandler("UL",((t,o)=>e._(this,void 0,void 0,(function*(){this._getLayerIndex(t).update(o.layers,o.removedIds);})))),this.actor.registerMessageHandler("SL",((t,o)=>e._(this,void 0,void 0,(function*(){this._getLayerIndex(t).replace(o);}))));}_setImages(t,o){return e._(this,void 0,void 0,(function*(){this.availableImages[t]=o;for(const e in this.workerSources[t]){const i=this.workerSources[t][e];for(const e in i)i[e].availableImages=o;}}))}_syncRTLPluginState(t,o){return e._(this,void 0,void 0,(function*(){if(e.bD.isParsed())return e.bD.getState();if("loading"!==o.pluginStatus)return e.bD.setState(o),o;const t=o.pluginURL;if(this.self.importScripts(t),e.bD.isParsed()){const o={pluginStatus:"loaded",pluginURL:t};return e.bD.setState(o),o}throw e.bD.setState({pluginStatus:"error",pluginURL:""}),new Error(`RTL Text Plugin failed to import scripts from ${t}`)}))}_getAvailableImages(e){let t=this.availableImages[e];return t||(t=[]),t}_getLayerIndex(e){let o=this.layerIndexes[e];return o||(o=this.layerIndexes[e]=new t),o}_getWorkerSource(e,t,o){if(this.workerSources[e]||(this.workerSources[e]={}),this.workerSources[e][t]||(this.workerSources[e][t]={}),!this.workerSources[e][t][o]){const i={sendAsync:(t,o)=>(t.targetMapId=e,this.actor.sendAsync(t,o))};switch(t){case"vector":this.workerSources[e][t][o]=new r(i,this._getLayerIndex(e),this._getAvailableImages(e));break;case"geojson":this.workerSources[e][t][o]=new ye(i,this._getLayerIndex(e),this._getAvailableImages(e));break;default:this.workerSources[e][t][o]=new this.externalWorkerSourceTypes[t](i,this._getLayerIndex(e),this._getAvailableImages(e));}}return this.workerSources[e][t][o]}_getDEMWorkerSource(e,t){return this.demWorkerSources[e]||(this.demWorkerSources[e]={}),this.demWorkerSources[e][t]||(this.demWorkerSources[e][t]=new n),this.demWorkerSources[e][t]}}return e.i(self)&&(self.worker=new ve(self)),ve}));
+
+define("index",["exports","./shared"],(function(t,e){"use strict";var i="4.7.1";let a,s;const o={now:"undefined"!=typeof performance&&performance&&performance.now?performance.now.bind(performance):Date.now.bind(Date),frameAsync:t=>new Promise(((i,a)=>{const s=requestAnimationFrame(i);t.signal.addEventListener("abort",(()=>{cancelAnimationFrame(s),a(e.c());}));})),getImageData(t,e=0){return this.getImageCanvasContext(t).getImageData(-e,-e,t.width+2*e,t.height+2*e)},getImageCanvasContext(t){const e=window.document.createElement("canvas"),i=e.getContext("2d",{willReadFrequently:!0});if(!i)throw new Error("failed to create canvas 2d context");return e.width=t.width,e.height=t.height,i.drawImage(t,0,0,t.width,t.height),i},resolveURL:t=>(a||(a=document.createElement("a")),a.href=t,a.href),hardwareConcurrency:"undefined"!=typeof navigator&&navigator.hardwareConcurrency||4,get prefersReducedMotion(){return !!matchMedia&&(null==s&&(s=matchMedia("(prefers-reduced-motion: reduce)")),s.matches)}};class r{static testProp(t){if(!r.docStyle)return t[0];for(let e=0;e<t.length;e++)if(t[e]in r.docStyle)return t[e];return t[0]}static create(t,e,i){const a=window.document.createElement(t);return void 0!==e&&(a.className=e),i&&i.appendChild(a),a}static createNS(t,e){return window.document.createElementNS(t,e)}static disableDrag(){r.docStyle&&r.selectProp&&(r.userSelect=r.docStyle[r.selectProp],r.docStyle[r.selectProp]="none");}static enableDrag(){r.docStyle&&r.selectProp&&(r.docStyle[r.selectProp]=r.userSelect);}static setTransform(t,e){t.style[r.transformProp]=e;}static addEventListener(t,e,i,a={}){t.addEventListener(e,i,"passive"in a?a:a.capture);}static removeEventListener(t,e,i,a={}){t.removeEventListener(e,i,"passive"in a?a:a.capture);}static suppressClickInternal(t){t.preventDefault(),t.stopPropagation(),window.removeEventListener("click",r.suppressClickInternal,!0);}static suppressClick(){window.addEventListener("click",r.suppressClickInternal,!0),window.setTimeout((()=>{window.removeEventListener("click",r.suppressClickInternal,!0);}),0);}static getScale(t){const e=t.getBoundingClientRect();return {x:e.width/t.offsetWidth||1,y:e.height/t.offsetHeight||1,boundingClientRect:e}}static getPoint(t,i,a){const s=i.boundingClientRect;return new e.P((a.clientX-s.left)/i.x-t.clientLeft,(a.clientY-s.top)/i.y-t.clientTop)}static mousePos(t,e){const i=r.getScale(t);return r.getPoint(t,i,e)}static touchPos(t,e){const i=[],a=r.getScale(t);for(let s=0;s<e.length;s++)i.push(r.getPoint(t,a,e[s]));return i}static mouseButton(t){return t.button}static remove(t){t.parentNode&&t.parentNode.removeChild(t);}}r.docStyle="undefined"!=typeof window&&window.document&&window.document.documentElement.style,r.selectProp=r.testProp(["userSelect","MozUserSelect","WebkitUserSelect","msUserSelect"]),r.transformProp=r.testProp(["transform","WebkitTransform"]);const n={supported:!1,testSupport:function(t){!c&&h&&(u?d(t):l=t);}};let l,h,c=!1,u=!1;function d(t){const e=t.createTexture();t.bindTexture(t.TEXTURE_2D,e);try{if(t.texImage2D(t.TEXTURE_2D,0,t.RGBA,t.RGBA,t.UNSIGNED_BYTE,h),t.isContextLost())return;n.supported=!0;}catch(t){}t.deleteTexture(e),c=!0;}var _;"undefined"!=typeof document&&(h=document.createElement("img"),h.onload=()=>{l&&d(l),l=null,u=!0;},h.onerror=()=>{c=!0,l=null;},h.src="data:image/webp;base64,UklGRh4AAABXRUJQVlA4TBEAAAAvAQAAAAfQ//73v/+BiOh/AAA="),function(t){let i,a,s,o;t.resetRequestQueue=()=>{i=[],a=0,s=0,o={};},t.addThrottleControl=t=>{const e=s++;return o[e]=t,e},t.removeThrottleControl=t=>{delete o[t],l();},t.getImage=(t,a,s=!0)=>new Promise(((o,r)=>{n.supported&&(t.headers||(t.headers={}),t.headers.accept="image/webp,*/*"),e.e(t,{type:"image"}),i.push({abortController:a,requestParameters:t,supportImageRefresh:s,state:"queued",onError:t=>{r(t);},onSuccess:t=>{o(t);}}),l();}));const r=t=>e._(this,void 0,void 0,(function*(){t.state="running";const{requestParameters:i,supportImageRefresh:s,onError:o,onSuccess:r,abortController:n}=t,c=!1===s&&!e.i(self)&&!e.g(i.url)&&(!i.headers||Object.keys(i.headers).reduce(((t,e)=>t&&"accept"===e),!0));a++;const u=c?h(i,n):e.m(i,n);try{const i=yield u;delete t.abortController,t.state="completed",i.data instanceof HTMLImageElement||e.b(i.data)?r(i):i.data&&r({data:yield(d=i.data,"function"==typeof createImageBitmap?e.d(d):e.f(d)),cacheControl:i.cacheControl,expires:i.expires});}catch(e){delete t.abortController,o(e);}finally{a--,l();}var d;})),l=()=>{const t=(()=>{for(const t of Object.keys(o))if(o[t]())return !0;return !1})()?e.a.MAX_PARALLEL_IMAGE_REQUESTS_PER_FRAME:e.a.MAX_PARALLEL_IMAGE_REQUESTS;for(let e=a;e<t&&i.length>0;e++){const t=i.shift();t.abortController.signal.aborted?e--:r(t);}},h=(t,i)=>new Promise(((a,s)=>{const o=new Image,r=t.url,n=t.credentials;n&&"include"===n?o.crossOrigin="use-credentials":(n&&"same-origin"===n||!e.s(r))&&(o.crossOrigin="anonymous"),i.signal.addEventListener("abort",(()=>{o.src="",s(e.c());})),o.fetchPriority="high",o.onload=()=>{o.onerror=o.onload=null,a({data:o});},o.onerror=()=>{o.onerror=o.onload=null,i.signal.aborted||s(new Error("Could not load image. Please make sure to use a supported image type such as PNG or JPEG. Note that SVGs are not supported."));},o.src=r;}));}(_||(_={})),_.resetRequestQueue();class p{constructor(t){this._transformRequestFn=t;}transformRequest(t,e){return this._transformRequestFn&&this._transformRequestFn(t,e)||{url:t}}setTransformRequest(t){this._transformRequestFn=t;}}function m(t){var i=new e.A(3);return i[0]=t[0],i[1]=t[1],i[2]=t[2],i}var f,g=function(t,e,i){return t[0]=e[0]-i[0],t[1]=e[1]-i[1],t[2]=e[2]-i[2],t};f=new e.A(3),e.A!=Float32Array&&(f[0]=0,f[1]=0,f[2]=0);var v=function(t){var e=t[0],i=t[1];return e*e+i*i};function x(t){const e=[];if("string"==typeof t)e.push({id:"default",url:t});else if(t&&t.length>0){const i=[];for(const{id:a,url:s}of t){const t=`${a}${s}`;-1===i.indexOf(t)&&(i.push(t),e.push({id:a,url:s}));}}return e}function y(t,e,i){const a=t.split("?");return a[0]+=`${e}${i}`,a.join("?")}!function(){var t=new e.A(2);e.A!=Float32Array&&(t[0]=0,t[1]=0);}();class b{constructor(t,e,i,a){this.context=t,this.format=i,this.texture=t.gl.createTexture(),this.update(e,a);}update(t,i,a){const{width:s,height:o}=t,r=!(this.size&&this.size[0]===s&&this.size[1]===o||a),{context:n}=this,{gl:l}=n;if(this.useMipmap=Boolean(i&&i.useMipmap),l.bindTexture(l.TEXTURE_2D,this.texture),n.pixelStoreUnpackFlipY.set(!1),n.pixelStoreUnpack.set(1),n.pixelStoreUnpackPremultiplyAlpha.set(this.format===l.RGBA&&(!i||!1!==i.premultiply)),r)this.size=[s,o],t instanceof HTMLImageElement||t instanceof HTMLCanvasElement||t instanceof HTMLVideoElement||t instanceof ImageData||e.b(t)?l.texImage2D(l.TEXTURE_2D,0,this.format,this.format,l.UNSIGNED_BYTE,t):l.texImage2D(l.TEXTURE_2D,0,this.format,s,o,0,this.format,l.UNSIGNED_BYTE,t.data);else {const{x:i,y:r}=a||{x:0,y:0};t instanceof HTMLImageElement||t instanceof HTMLCanvasElement||t instanceof HTMLVideoElement||t instanceof ImageData||e.b(t)?l.texSubImage2D(l.TEXTURE_2D,0,i,r,l.RGBA,l.UNSIGNED_BYTE,t):l.texSubImage2D(l.TEXTURE_2D,0,i,r,s,o,l.RGBA,l.UNSIGNED_BYTE,t.data);}this.useMipmap&&this.isSizePowerOfTwo()&&l.generateMipmap(l.TEXTURE_2D);}bind(t,e,i){const{context:a}=this,{gl:s}=a;s.bindTexture(s.TEXTURE_2D,this.texture),i!==s.LINEAR_MIPMAP_NEAREST||this.isSizePowerOfTwo()||(i=s.LINEAR),t!==this.filter&&(s.texParameteri(s.TEXTURE_2D,s.TEXTURE_MAG_FILTER,t),s.texParameteri(s.TEXTURE_2D,s.TEXTURE_MIN_FILTER,i||t),this.filter=t),e!==this.wrap&&(s.texParameteri(s.TEXTURE_2D,s.TEXTURE_WRAP_S,e),s.texParameteri(s.TEXTURE_2D,s.TEXTURE_WRAP_T,e),this.wrap=e);}isSizePowerOfTwo(){return this.size[0]===this.size[1]&&Math.log(this.size[0])/Math.LN2%1==0}destroy(){const{gl:t}=this.context;t.deleteTexture(this.texture),this.texture=null;}}function w(t){const{userImage:e}=t;return !!(e&&e.render&&e.render())&&(t.data.replace(new Uint8Array(e.data.buffer)),!0)}class T extends e.E{constructor(){super(),this.images={},this.updatedImages={},this.callbackDispatchedThisFrame={},this.loaded=!1,this.requestors=[],this.patterns={},this.atlasImage=new e.R({width:1,height:1}),this.dirty=!0;}isLoaded(){return this.loaded}setLoaded(t){if(this.loaded!==t&&(this.loaded=t,t)){for(const{ids:t,promiseResolve:e}of this.requestors)e(this._getImagesForIds(t));this.requestors=[];}}getImage(t){const i=this.images[t];if(i&&!i.data&&i.spriteData){const t=i.spriteData;i.data=new e.R({width:t.width,height:t.height},t.context.getImageData(t.x,t.y,t.width,t.height).data),i.spriteData=null;}return i}addImage(t,e){if(this.images[t])throw new Error(`Image id ${t} already exist, use updateImage instead`);this._validate(t,e)&&(this.images[t]=e);}_validate(t,i){let a=!0;const s=i.data||i.spriteData;return this._validateStretch(i.stretchX,s&&s.width)||(this.fire(new e.j(new Error(`Image "${t}" has invalid "stretchX" value`))),a=!1),this._validateStretch(i.stretchY,s&&s.height)||(this.fire(new e.j(new Error(`Image "${t}" has invalid "stretchY" value`))),a=!1),this._validateContent(i.content,i)||(this.fire(new e.j(new Error(`Image "${t}" has invalid "content" value`))),a=!1),a}_validateStretch(t,e){if(!t)return !0;let i=0;for(const a of t){if(a[0]<i||a[1]<a[0]||e<a[1])return !1;i=a[1];}return !0}_validateContent(t,e){if(!t)return !0;if(4!==t.length)return !1;const i=e.spriteData,a=i&&i.width||e.data.width,s=i&&i.height||e.data.height;return !(t[0]<0||a<t[0]||t[1]<0||s<t[1]||t[2]<0||a<t[2]||t[3]<0||s<t[3]||t[2]<t[0]||t[3]<t[1])}updateImage(t,e,i=!0){const a=this.getImage(t);if(i&&(a.data.width!==e.data.width||a.data.height!==e.data.height))throw new Error(`size mismatch between old image (${a.data.width}x${a.data.height}) and new image (${e.data.width}x${e.data.height}).`);e.version=a.version+1,this.images[t]=e,this.updatedImages[t]=!0;}removeImage(t){const e=this.images[t];delete this.images[t],delete this.patterns[t],e.userImage&&e.userImage.onRemove&&e.userImage.onRemove();}listImages(){return Object.keys(this.images)}getImages(t){return new Promise(((e,i)=>{let a=!0;if(!this.isLoaded())for(const e of t)this.images[e]||(a=!1);this.isLoaded()||a?e(this._getImagesForIds(t)):this.requestors.push({ids:t,promiseResolve:e});}))}_getImagesForIds(t){const i={};for(const a of t){let t=this.getImage(a);t||(this.fire(new e.k("styleimagemissing",{id:a})),t=this.getImage(a)),t?i[a]={data:t.data.clone(),pixelRatio:t.pixelRatio,sdf:t.sdf,version:t.version,stretchX:t.stretchX,stretchY:t.stretchY,content:t.content,textFitWidth:t.textFitWidth,textFitHeight:t.textFitHeight,hasRenderCallback:Boolean(t.userImage&&t.userImage.render)}:e.w(`Image "${a}" could not be loaded. Please make sure you have added the image with map.addImage() or a "sprite" property in your style. You can provide missing images by listening for the "styleimagemissing" map event.`);}return i}getPixelSize(){const{width:t,height:e}=this.atlasImage;return {width:t,height:e}}getPattern(t){const i=this.patterns[t],a=this.getImage(t);if(!a)return null;if(i&&i.position.version===a.version)return i.position;if(i)i.position.version=a.version;else {const i={w:a.data.width+2,h:a.data.height+2,x:0,y:0},s=new e.I(i,a);this.patterns[t]={bin:i,position:s};}return this._updatePatternAtlas(),this.patterns[t].position}bind(t){const e=t.gl;this.atlasTexture?this.dirty&&(this.atlasTexture.update(this.atlasImage),this.dirty=!1):this.atlasTexture=new b(t,this.atlasImage,e.RGBA),this.atlasTexture.bind(e.LINEAR,e.CLAMP_TO_EDGE);}_updatePatternAtlas(){const t=[];for(const e in this.patterns)t.push(this.patterns[e].bin);const{w:i,h:a}=e.p(t),s=this.atlasImage;s.resize({width:i||1,height:a||1});for(const t in this.patterns){const{bin:i}=this.patterns[t],a=i.x+1,o=i.y+1,r=this.getImage(t).data,n=r.width,l=r.height;e.R.copy(r,s,{x:0,y:0},{x:a,y:o},{width:n,height:l}),e.R.copy(r,s,{x:0,y:l-1},{x:a,y:o-1},{width:n,height:1}),e.R.copy(r,s,{x:0,y:0},{x:a,y:o+l},{width:n,height:1}),e.R.copy(r,s,{x:n-1,y:0},{x:a-1,y:o},{width:1,height:l}),e.R.copy(r,s,{x:0,y:0},{x:a+n,y:o},{width:1,height:l});}this.dirty=!0;}beginFrame(){this.callbackDispatchedThisFrame={};}dispatchRenderCallbacks(t){for(const i of t){if(this.callbackDispatchedThisFrame[i])continue;this.callbackDispatchedThisFrame[i]=!0;const t=this.getImage(i);t||e.w(`Image with ID: "${i}" was not found`),w(t)&&this.updateImage(i,t);}}}const I=1e20;function E(t,e,i,a,s,o,r,n,l){for(let h=e;h<e+a;h++)P(t,i*o+h,o,s,r,n,l);for(let h=i;h<i+s;h++)P(t,h*o+e,1,a,r,n,l);}function P(t,e,i,a,s,o,r){o[0]=0,r[0]=-I,r[1]=I,s[0]=t[e];for(let n=1,l=0,h=0;n<a;n++){s[n]=t[e+n*i];const a=n*n;do{const t=o[l];h=(s[n]-s[t]+a-t*t)/(n-t)/2;}while(h<=r[l]&&--l>-1);l++,o[l]=n,r[l]=h,r[l+1]=I;}for(let n=0,l=0;n<a;n++){for(;r[l+1]<n;)l++;const a=o[l],h=n-a;t[e+n*i]=s[a]+h*h;}}class C{constructor(t,e){this.requestManager=t,this.localIdeographFontFamily=e,this.entries={};}setURL(t){this.url=t;}getGlyphs(t){return e._(this,void 0,void 0,(function*(){const e=[];for(const i in t)for(const a of t[i])e.push(this._getAndCacheGlyphsPromise(i,a));const i=yield Promise.all(e),a={};for(const{stack:t,id:e,glyph:s}of i)a[t]||(a[t]={}),a[t][e]=s&&{id:s.id,bitmap:s.bitmap.clone(),metrics:s.metrics};return a}))}_getAndCacheGlyphsPromise(t,i){return e._(this,void 0,void 0,(function*(){let e=this.entries[t];e||(e=this.entries[t]={glyphs:{},requests:{},ranges:{}});let a=e.glyphs[i];if(void 0!==a)return {stack:t,id:i,glyph:a};if(a=this._tinySDF(e,t,i),a)return e.glyphs[i]=a,{stack:t,id:i,glyph:a};const s=Math.floor(i/256);if(256*s>65535)throw new Error("glyphs > 65535 not supported");if(e.ranges[s])return {stack:t,id:i,glyph:a};if(!this.url)throw new Error("glyphsUrl is not set");if(!e.requests[s]){const i=C.loadGlyphRange(t,s,this.url,this.requestManager);e.requests[s]=i;}const o=yield e.requests[s];for(const t in o)this._doesCharSupportLocalGlyph(+t)||(e.glyphs[+t]=o[+t]);return e.ranges[s]=!0,{stack:t,id:i,glyph:o[i]||null}}))}_doesCharSupportLocalGlyph(t){return !!this.localIdeographFontFamily&&/\p{Ideo}|\p{sc=Hang}|\p{sc=Hira}|\p{sc=Kana}/u.test(String.fromCodePoint(t))}_tinySDF(t,i,a){const s=this.localIdeographFontFamily;if(!s)return;if(!this._doesCharSupportLocalGlyph(a))return;let o=t.tinySDF;if(!o){let e="400";/bold/i.test(i)?e="900":/medium/i.test(i)?e="500":/light/i.test(i)&&(e="200"),o=t.tinySDF=new C.TinySDF({fontSize:48,buffer:6,radius:16,cutoff:.25,fontFamily:s,fontWeight:e});}const r=o.draw(String.fromCharCode(a));return {id:a,bitmap:new e.o({width:r.width||60,height:r.height||60},r.data),metrics:{width:r.glyphWidth/2||24,height:r.glyphHeight/2||24,left:r.glyphLeft/2+.5||0,top:r.glyphTop/2-27.5||-8,advance:r.glyphAdvance/2||24,isDoubleResolution:!0}}}}C.loadGlyphRange=function(t,i,a,s){return e._(this,void 0,void 0,(function*(){const o=256*i,r=o+255,n=s.transformRequest(a.replace("{fontstack}",t).replace("{range}",`${o}-${r}`),"Glyphs"),l=yield e.l(n,new AbortController);if(!l||!l.data)throw new Error(`Could not load glyph range. range: ${i}, ${o}-${r}`);const h={};for(const t of e.n(l.data))h[t.id]=t;return h}))},C.TinySDF=class{constructor({fontSize:t=24,buffer:e=3,radius:i=8,cutoff:a=.25,fontFamily:s="sans-serif",fontWeight:o="normal",fontStyle:r="normal"}={}){this.buffer=e,this.cutoff=a,this.radius=i;const n=this.size=t+4*e,l=this._createCanvas(n),h=this.ctx=l.getContext("2d",{willReadFrequently:!0});h.font=`${r} ${o} ${t}px ${s}`,h.textBaseline="alphabetic",h.textAlign="left",h.fillStyle="black",this.gridOuter=new Float64Array(n*n),this.gridInner=new Float64Array(n*n),this.f=new Float64Array(n),this.z=new Float64Array(n+1),this.v=new Uint16Array(n);}_createCanvas(t){const e=document.createElement("canvas");return e.width=e.height=t,e}draw(t){const{width:e,actualBoundingBoxAscent:i,actualBoundingBoxDescent:a,actualBoundingBoxLeft:s,actualBoundingBoxRight:o}=this.ctx.measureText(t),r=Math.ceil(i),n=Math.max(0,Math.min(this.size-this.buffer,Math.ceil(o-s))),l=Math.min(this.size-this.buffer,r+Math.ceil(a)),h=n+2*this.buffer,c=l+2*this.buffer,u=Math.max(h*c,0),d=new Uint8ClampedArray(u),_={data:d,width:h,height:c,glyphWidth:n,glyphHeight:l,glyphTop:r,glyphLeft:0,glyphAdvance:e};if(0===n||0===l)return _;const{ctx:p,buffer:m,gridInner:f,gridOuter:g}=this;p.clearRect(m,m,n,l),p.fillText(t,m,m+r);const v=p.getImageData(m,m,n,l);g.fill(I,0,u),f.fill(0,0,u);for(let t=0;t<l;t++)for(let e=0;e<n;e++){const i=v.data[4*(t*n+e)+3]/255;if(0===i)continue;const a=(t+m)*h+e+m;if(1===i)g[a]=0,f[a]=I;else {const t=.5-i;g[a]=t>0?t*t:0,f[a]=t<0?t*t:0;}}E(g,0,0,h,c,h,this.f,this.v,this.z),E(f,m,m,n,l,h,this.f,this.v,this.z);for(let t=0;t<u;t++){const e=Math.sqrt(g[t])-Math.sqrt(f[t]);d[t]=Math.round(255-255*(e/this.radius+this.cutoff));}return _}};class S{constructor(){this.specification=e.v.light.position;}possiblyEvaluate(t,i){return e.x(t.expression.evaluate(i))}interpolate(t,i,a){return {x:e.y.number(t.x,i.x,a),y:e.y.number(t.y,i.y,a),z:e.y.number(t.z,i.z,a)}}}let z;class D extends e.E{constructor(t){super(),z=z||new e.q({anchor:new e.D(e.v.light.anchor),position:new S,color:new e.D(e.v.light.color),intensity:new e.D(e.v.light.intensity)}),this._transitionable=new e.T(z),this.setLight(t),this._transitioning=this._transitionable.untransitioned();}getLight(){return this._transitionable.serialize()}setLight(t,i={}){if(!this._validate(e.r,t,i))for(const e in t){const i=t[e];e.endsWith("-transition")?this._transitionable.setTransition(e.slice(0,-11),i):this._transitionable.setValue(e,i);}}updateTransitions(t){this._transitioning=this._transitionable.transitioned(t,this._transitioning);}hasTransition(){return this._transitioning.hasTransition()}recalculate(t){this.properties=this._transitioning.possiblyEvaluate(t);}_validate(t,i,a){return (!a||!1!==a.validate)&&e.t(this,t.call(e.u,{value:i,style:{glyphs:!0,sprite:!0},styleSpec:e.v}))}}const M=new e.q({"sky-color":new e.D(e.v.sky["sky-color"]),"horizon-color":new e.D(e.v.sky["horizon-color"]),"fog-color":new e.D(e.v.sky["fog-color"]),"fog-ground-blend":new e.D(e.v.sky["fog-ground-blend"]),"horizon-fog-blend":new e.D(e.v.sky["horizon-fog-blend"]),"sky-horizon-blend":new e.D(e.v.sky["sky-horizon-blend"]),"atmosphere-blend":new e.D(e.v.sky["atmosphere-blend"])});class A extends e.E{constructor(t){super(),this._transitionable=new e.T(M),this.setSky(t),this._transitioning=this._transitionable.untransitioned(),this.recalculate(new e.z(0));}setSky(t,i={}){if(!this._validate(e.B,t,i)){t||(t={"sky-color":"transparent","horizon-color":"transparent","fog-color":"transparent","fog-ground-blend":1,"atmosphere-blend":0});for(const e in t){const i=t[e];e.endsWith("-transition")?this._transitionable.setTransition(e.slice(0,-11),i):this._transitionable.setValue(e,i);}}}getSky(){return this._transitionable.serialize()}updateTransitions(t){this._transitioning=this._transitionable.transitioned(t,this._transitioning);}hasTransition(){return this._transitioning.hasTransition()}recalculate(t){this.properties=this._transitioning.possiblyEvaluate(t);}_validate(t,i,a={}){return !1!==(null==a?void 0:a.validate)&&e.t(this,t.call(e.u,e.e({value:i,style:{glyphs:!0,sprite:!0},styleSpec:e.v})))}calculateFogBlendOpacity(t){return t<60?0:t<70?(t-60)/10:1}}class R{constructor(t,e){this.width=t,this.height=e,this.nextRow=0,this.data=new Uint8Array(this.width*this.height),this.dashEntry={};}getDash(t,e){const i=t.join(",")+String(e);return this.dashEntry[i]||(this.dashEntry[i]=this.addDash(t,e)),this.dashEntry[i]}getDashRanges(t,e,i){const a=[];let s=t.length%2==1?-t[t.length-1]*i:0,o=t[0]*i,r=!0;a.push({left:s,right:o,isDash:r,zeroLength:0===t[0]});let n=t[0];for(let e=1;e<t.length;e++){r=!r;const l=t[e];s=n*i,n+=l,o=n*i,a.push({left:s,right:o,isDash:r,zeroLength:0===l});}return a}addRoundDash(t,e,i){const a=e/2;for(let e=-i;e<=i;e++){const s=this.width*(this.nextRow+i+e);let o=0,r=t[o];for(let n=0;n<this.width;n++){n/r.right>1&&(r=t[++o]);const l=Math.abs(n-r.left),h=Math.abs(n-r.right),c=Math.min(l,h);let u;const d=e/i*(a+1);if(r.isDash){const t=a-Math.abs(d);u=Math.sqrt(c*c+t*t);}else u=a-Math.sqrt(c*c+d*d);this.data[s+n]=Math.max(0,Math.min(255,u+128));}}}addRegularDash(t){for(let e=t.length-1;e>=0;--e){const i=t[e],a=t[e+1];i.zeroLength?t.splice(e,1):a&&a.isDash===i.isDash&&(a.left=i.left,t.splice(e,1));}const e=t[0],i=t[t.length-1];e.isDash===i.isDash&&(e.left=i.left-this.width,i.right=e.right+this.width);const a=this.width*this.nextRow;let s=0,o=t[s];for(let e=0;e<this.width;e++){e/o.right>1&&(o=t[++s]);const i=Math.abs(e-o.left),r=Math.abs(e-o.right),n=Math.min(i,r);this.data[a+e]=Math.max(0,Math.min(255,(o.isDash?n:-n)+128));}}addDash(t,i){const a=i?7:0,s=2*a+1;if(this.nextRow+s>this.height)return e.w("LineAtlas out of space"),null;let o=0;for(let e=0;e<t.length;e++)o+=t[e];if(0!==o){const e=this.width/o,s=this.getDashRanges(t,this.width,e);i?this.addRoundDash(s,e,a):this.addRegularDash(s);}const r={y:(this.nextRow+a+.5)/this.height,height:2*a/this.height,width:o};return this.nextRow+=s,this.dirty=!0,r}bind(t){const e=t.gl;this.texture?(e.bindTexture(e.TEXTURE_2D,this.texture),this.dirty&&(this.dirty=!1,e.texSubImage2D(e.TEXTURE_2D,0,0,0,this.width,this.height,e.ALPHA,e.UNSIGNED_BYTE,this.data))):(this.texture=e.createTexture(),e.bindTexture(e.TEXTURE_2D,this.texture),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_S,e.REPEAT),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_WRAP_T,e.REPEAT),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MIN_FILTER,e.LINEAR),e.texParameteri(e.TEXTURE_2D,e.TEXTURE_MAG_FILTER,e.LINEAR),e.texImage2D(e.TEXTURE_2D,0,e.ALPHA,this.width,this.height,0,e.ALPHA,e.UNSIGNED_BYTE,this.data));}}const k="maplibre_preloaded_worker_pool";class L{constructor(){this.active={};}acquire(t){if(!this.workers)for(this.workers=[];this.workers.length<L.workerCount;)this.workers.push(new Worker(e.a.WORKER_URL));return this.active[t]=!0,this.workers.slice()}release(t){delete this.active[t],0===this.numActive()&&(this.workers.forEach((t=>{t.terminate();})),this.workers=null);}isPreloaded(){return !!this.active[k]}numActive(){return Object.keys(this.active).length}}const F=Math.floor(o.hardwareConcurrency/2);let B,O;function N(){return B||(B=new L),B}L.workerCount=e.C(globalThis)?Math.max(Math.min(F,3),1):1;class U{constructor(t,i){this.workerPool=t,this.actors=[],this.currentActor=0,this.id=i;const a=this.workerPool.acquire(i);for(let t=0;t<a.length;t++){const s=new e.F(a[t],i);s.name=`Worker ${t}`,this.actors.push(s);}if(!this.actors.length)throw new Error("No actors found")}broadcast(t,e){const i=[];for(const a of this.actors)i.push(a.sendAsync({type:t,data:e}));return Promise.all(i)}getActor(){return this.currentActor=(this.currentActor+1)%this.actors.length,this.actors[this.currentActor]}remove(t=!0){this.actors.forEach((t=>{t.remove();})),this.actors=[],t&&this.workerPool.release(this.id);}registerMessageHandler(t,e){for(const i of this.actors)i.registerMessageHandler(t,e);}}function j(){return O||(O=new U(N(),e.G),O.registerMessageHandler("GR",((t,i,a)=>e.m(i,a)))),O}function Z(t,i){const a=e.H();return e.J(a,a,[1,1,0]),e.K(a,a,[.5*t.width,.5*t.height,1]),e.L(a,a,t.calculatePosMatrix(i.toUnwrapped()))}function q(t,e,i,a,s,o){const r=function(t,e,i){if(t)for(const a of t){const t=e[a];if(t&&t.source===i&&"fill-extrusion"===t.type)return !0}else for(const t in e){const a=e[t];if(a.source===i&&"fill-extrusion"===a.type)return !0}return !1}(s&&s.layers,e,t.id),n=o.maxPitchScaleFactor(),l=t.tilesIn(a,n,r);l.sort(V);const h=[];for(const a of l)h.push({wrappedTileID:a.tileID.wrapped().key,queryResults:a.tile.queryRenderedFeatures(e,i,t._state,a.queryGeometry,a.cameraQueryGeometry,a.scale,s,o,n,Z(t.transform,a.tileID))});const c=function(t){const e={},i={};for(const a of t){const t=a.queryResults,s=a.wrappedTileID,o=i[s]=i[s]||{};for(const i in t){const a=t[i],s=o[i]=o[i]||{},r=e[i]=e[i]||[];for(const t of a)s[t.featureIndex]||(s[t.featureIndex]=!0,r.push(t));}}return e}(h);for(const e in c)c[e].forEach((e=>{const i=e.feature,a=t.getFeatureState(i.layer["source-layer"],i.id);i.source=i.layer.source,i.layer["source-layer"]&&(i.sourceLayer=i.layer["source-layer"]),i.state=a;}));return c}function V(t,e){const i=t.tileID,a=e.tileID;return i.overscaledZ-a.overscaledZ||i.canonical.y-a.canonical.y||i.wrap-a.wrap||i.canonical.x-a.canonical.x}function G(t,i,a){return e._(this,void 0,void 0,(function*(){let s=t;if(t.url?s=(yield e.h(i.transformRequest(t.url,"Source"),a)).data:yield o.frameAsync(a),!s)return null;const r=e.M(e.e(s,t),["tiles","minzoom","maxzoom","attribution","bounds","scheme","tileSize","encoding"]);return "vector_layers"in s&&s.vector_layers&&(r.vectorLayerIds=s.vector_layers.map((t=>t.id))),r}))}class H{constructor(t,e){t&&(e?this.setSouthWest(t).setNorthEast(e):Array.isArray(t)&&(4===t.length?this.setSouthWest([t[0],t[1]]).setNorthEast([t[2],t[3]]):this.setSouthWest(t[0]).setNorthEast(t[1])));}setNorthEast(t){return this._ne=t instanceof e.N?new e.N(t.lng,t.lat):e.N.convert(t),this}setSouthWest(t){return this._sw=t instanceof e.N?new e.N(t.lng,t.lat):e.N.convert(t),this}extend(t){const i=this._sw,a=this._ne;let s,o;if(t instanceof e.N)s=t,o=t;else {if(!(t instanceof H))return Array.isArray(t)?4===t.length||t.every(Array.isArray)?this.extend(H.convert(t)):this.extend(e.N.convert(t)):t&&("lng"in t||"lon"in t)&&"lat"in t?this.extend(e.N.convert(t)):this;if(s=t._sw,o=t._ne,!s||!o)return this}return i||a?(i.lng=Math.min(s.lng,i.lng),i.lat=Math.min(s.lat,i.lat),a.lng=Math.max(o.lng,a.lng),a.lat=Math.max(o.lat,a.lat)):(this._sw=new e.N(s.lng,s.lat),this._ne=new e.N(o.lng,o.lat)),this}getCenter(){return new e.N((this._sw.lng+this._ne.lng)/2,(this._sw.lat+this._ne.lat)/2)}getSouthWest(){return this._sw}getNorthEast(){return this._ne}getNorthWest(){return new e.N(this.getWest(),this.getNorth())}getSouthEast(){return new e.N(this.getEast(),this.getSouth())}getWest(){return this._sw.lng}getSouth(){return this._sw.lat}getEast(){return this._ne.lng}getNorth(){return this._ne.lat}toArray(){return [this._sw.toArray(),this._ne.toArray()]}toString(){return `LngLatBounds(${this._sw.toString()}, ${this._ne.toString()})`}isEmpty(){return !(this._sw&&this._ne)}contains(t){const{lng:i,lat:a}=e.N.convert(t);let s=this._sw.lng<=i&&i<=this._ne.lng;return this._sw.lng>this._ne.lng&&(s=this._sw.lng>=i&&i>=this._ne.lng),this._sw.lat<=a&&a<=this._ne.lat&&s}static convert(t){return t instanceof H?t:t?new H(t):t}static fromLngLat(t,i=0){const a=360*i/40075017,s=a/Math.cos(Math.PI/180*t.lat);return new H(new e.N(t.lng-s,t.lat-a),new e.N(t.lng+s,t.lat+a))}adjustAntiMeridian(){const t=new e.N(this._sw.lng,this._sw.lat),i=new e.N(this._ne.lng,this._ne.lat);return new H(t,t.lng>i.lng?new e.N(i.lng+360,i.lat):i)}}class W{constructor(t,e,i){this.bounds=H.convert(this.validateBounds(t)),this.minzoom=e||0,this.maxzoom=i||24;}validateBounds(t){return Array.isArray(t)&&4===t.length?[Math.max(-180,t[0]),Math.max(-90,t[1]),Math.min(180,t[2]),Math.min(90,t[3])]:[-180,-90,180,90]}contains(t){const i=Math.pow(2,t.z),a=Math.floor(e.O(this.bounds.getWest())*i),s=Math.floor(e.Q(this.bounds.getNorth())*i),o=Math.ceil(e.O(this.bounds.getEast())*i),r=Math.ceil(e.Q(this.bounds.getSouth())*i);return t.x>=a&&t.x<o&&t.y>=s&&t.y<r}}class $ extends e.E{constructor(t,i,a,s){if(super(),this.id=t,this.dispatcher=a,this.type="vector",this.minzoom=0,this.maxzoom=22,this.scheme="xyz",this.tileSize=512,this.reparseOverscaled=!0,this.isTileClipped=!0,this._loaded=!1,e.e(this,e.M(i,["url","scheme","tileSize","promoteId"])),this._options=e.e({type:"vector"},i),this._collectResourceTiming=i.collectResourceTiming,512!==this.tileSize)throw new Error("vector tile sources must have a tileSize of 512");this.setEventedParent(s);}load(){return e._(this,void 0,void 0,(function*(){this._loaded=!1,this.fire(new e.k("dataloading",{dataType:"source"})),this._tileJSONRequest=new AbortController;try{const t=yield G(this._options,this.map._requestManager,this._tileJSONRequest);this._tileJSONRequest=null,this._loaded=!0,this.map.style.sourceCaches[this.id].clearTiles(),t&&(e.e(this,t),t.bounds&&(this.tileBounds=new W(t.bounds,this.minzoom,this.maxzoom)),this.fire(new e.k("data",{dataType:"source",sourceDataType:"metadata"})),this.fire(new e.k("data",{dataType:"source",sourceDataType:"content"})));}catch(t){this._tileJSONRequest=null,this.fire(new e.j(t));}}))}loaded(){return this._loaded}hasTile(t){return !this.tileBounds||this.tileBounds.contains(t.canonical)}onAdd(t){this.map=t,this.load();}setSourceProperty(t){this._tileJSONRequest&&this._tileJSONRequest.abort(),t(),this.load();}setTiles(t){return this.setSourceProperty((()=>{this._options.tiles=t;})),this}setUrl(t){return this.setSourceProperty((()=>{this.url=t,this._options.url=t;})),this}onRemove(){this._tileJSONRequest&&(this._tileJSONRequest.abort(),this._tileJSONRequest=null);}serialize(){return e.e({},this._options)}loadTile(t){return e._(this,void 0,void 0,(function*(){const e=t.tileID.canonical.url(this.tiles,this.map.getPixelRatio(),this.scheme),i={request:this.map._requestManager.transformRequest(e,"Tile"),uid:t.uid,tileID:t.tileID,zoom:t.tileID.overscaledZ,tileSize:this.tileSize*t.tileID.overscaleFactor(),type:this.type,source:this.id,pixelRatio:this.map.getPixelRatio(),showCollisionBoxes:this.map.showCollisionBoxes,promoteId:this.promoteId};i.request.collectResourceTiming=this._collectResourceTiming;let a="RT";if(t.actor&&"expired"!==t.state){if("loading"===t.state)return new Promise(((e,i)=>{t.reloadPromise={resolve:e,reject:i};}))}else t.actor=this.dispatcher.getActor(),a="LT";t.abortController=new AbortController;try{const e=yield t.actor.sendAsync({type:a,data:i},t.abortController);if(delete t.abortController,t.aborted)return;this._afterTileLoadWorkerResponse(t,e);}catch(e){if(delete t.abortController,t.aborted)return;if(e&&404!==e.status)throw e;this._afterTileLoadWorkerResponse(t,null);}}))}_afterTileLoadWorkerResponse(t,e){if(e&&e.resourceTiming&&(t.resourceTiming=e.resourceTiming),e&&this.map._refreshExpiredTiles&&t.setExpiryData(e),t.loadVectorData(e,this.map.painter),t.reloadPromise){const e=t.reloadPromise;t.reloadPromise=null,this.loadTile(t).then(e.resolve).catch(e.reject);}}abortTile(t){return e._(this,void 0,void 0,(function*(){t.abortController&&(t.abortController.abort(),delete t.abortController),t.actor&&(yield t.actor.sendAsync({type:"AT",data:{uid:t.uid,type:this.type,source:this.id}}));}))}unloadTile(t){return e._(this,void 0,void 0,(function*(){t.unloadVectorData(),t.actor&&(yield t.actor.sendAsync({type:"RMT",data:{uid:t.uid,type:this.type,source:this.id}}));}))}hasTransition(){return !1}}class X extends e.E{constructor(t,i,a,s){super(),this.id=t,this.dispatcher=a,this.setEventedParent(s),this.type="raster",this.minzoom=0,this.maxzoom=22,this.roundZoom=!0,this.scheme="xyz",this.tileSize=512,this._loaded=!1,this._options=e.e({type:"raster"},i),e.e(this,e.M(i,["url","scheme","tileSize"]));}load(){return e._(this,void 0,void 0,(function*(){this._loaded=!1,this.fire(new e.k("dataloading",{dataType:"source"})),this._tileJSONRequest=new AbortController;try{const t=yield G(this._options,this.map._requestManager,this._tileJSONRequest);this._tileJSONRequest=null,this._loaded=!0,t&&(e.e(this,t),t.bounds&&(this.tileBounds=new W(t.bounds,this.minzoom,this.maxzoom)),this.fire(new e.k("data",{dataType:"source",sourceDataType:"metadata"})),this.fire(new e.k("data",{dataType:"source",sourceDataType:"content"})));}catch(t){this._tileJSONRequest=null,this.fire(new e.j(t));}}))}loaded(){return this._loaded}onAdd(t){this.map=t,this.load();}onRemove(){this._tileJSONRequest&&(this._tileJSONRequest.abort(),this._tileJSONRequest=null);}setSourceProperty(t){this._tileJSONRequest&&(this._tileJSONRequest.abort(),this._tileJSONRequest=null),t(),this.load();}setTiles(t){return this.setSourceProperty((()=>{this._options.tiles=t;})),this}setUrl(t){return this.setSourceProperty((()=>{this.url=t,this._options.url=t;})),this}serialize(){return e.e({},this._options)}hasTile(t){return !this.tileBounds||this.tileBounds.contains(t.canonical)}loadTile(t){return e._(this,void 0,void 0,(function*(){const e=t.tileID.canonical.url(this.tiles,this.map.getPixelRatio(),this.scheme);t.abortController=new AbortController;try{const i=yield _.getImage(this.map._requestManager.transformRequest(e,"Tile"),t.abortController,this.map._refreshExpiredTiles);if(delete t.abortController,t.aborted)return void(t.state="unloaded");if(i&&i.data){this.map._refreshExpiredTiles&&i.cacheControl&&i.expires&&t.setExpiryData({cacheControl:i.cacheControl,expires:i.expires});const e=this.map.painter.context,a=e.gl,s=i.data;t.texture=this.map.painter.getTileTexture(s.width),t.texture?t.texture.update(s,{useMipmap:!0}):(t.texture=new b(e,s,a.RGBA,{useMipmap:!0}),t.texture.bind(a.LINEAR,a.CLAMP_TO_EDGE,a.LINEAR_MIPMAP_NEAREST)),t.state="loaded";}}catch(e){if(delete t.abortController,t.aborted)t.state="unloaded";else if(e)throw t.state="errored",e}}))}abortTile(t){return e._(this,void 0,void 0,(function*(){t.abortController&&(t.abortController.abort(),delete t.abortController);}))}unloadTile(t){return e._(this,void 0,void 0,(function*(){t.texture&&this.map.painter.saveTileTexture(t.texture);}))}hasTransition(){return !1}}class K extends X{constructor(t,i,a,s){super(t,i,a,s),this.type="raster-dem",this.maxzoom=22,this._options=e.e({type:"raster-dem"},i),this.encoding=i.encoding||"mapbox",this.redFactor=i.redFactor,this.greenFactor=i.greenFactor,this.blueFactor=i.blueFactor,this.baseShift=i.baseShift;}loadTile(t){return e._(this,void 0,void 0,(function*(){const i=t.tileID.canonical.url(this.tiles,this.map.getPixelRatio(),this.scheme),a=this.map._requestManager.transformRequest(i,"Tile");t.neighboringTiles=this._getNeighboringTiles(t.tileID),t.abortController=new AbortController;try{const i=yield _.getImage(a,t.abortController,this.map._refreshExpiredTiles);if(delete t.abortController,t.aborted)return void(t.state="unloaded");if(i&&i.data){const a=i.data;this.map._refreshExpiredTiles&&i.cacheControl&&i.expires&&t.setExpiryData({cacheControl:i.cacheControl,expires:i.expires});const s=e.b(a)&&e.U()?a:yield this.readImageNow(a),o={type:this.type,uid:t.uid,source:this.id,rawImageData:s,encoding:this.encoding,redFactor:this.redFactor,greenFactor:this.greenFactor,blueFactor:this.blueFactor,baseShift:this.baseShift};if(!t.actor||"expired"===t.state){t.actor=this.dispatcher.getActor();const e=yield t.actor.sendAsync({type:"LDT",data:o});t.dem=e,t.needsHillshadePrepare=!0,t.needsTerrainPrepare=!0,t.state="loaded";}}}catch(e){if(delete t.abortController,t.aborted)t.state="unloaded";else if(e)throw t.state="errored",e}}))}readImageNow(t){return e._(this,void 0,void 0,(function*(){if("undefined"!=typeof VideoFrame&&e.V()){const i=t.width+2,a=t.height+2;try{return new e.R({width:i,height:a},yield e.W(t,-1,-1,i,a))}catch(t){}}return o.getImageData(t,1)}))}_getNeighboringTiles(t){const i=t.canonical,a=Math.pow(2,i.z),s=(i.x-1+a)%a,o=0===i.x?t.wrap-1:t.wrap,r=(i.x+1+a)%a,n=i.x+1===a?t.wrap+1:t.wrap,l={};return l[new e.S(t.overscaledZ,o,i.z,s,i.y).key]={backfilled:!1},l[new e.S(t.overscaledZ,n,i.z,r,i.y).key]={backfilled:!1},i.y>0&&(l[new e.S(t.overscaledZ,o,i.z,s,i.y-1).key]={backfilled:!1},l[new e.S(t.overscaledZ,t.wrap,i.z,i.x,i.y-1).key]={backfilled:!1},l[new e.S(t.overscaledZ,n,i.z,r,i.y-1).key]={backfilled:!1}),i.y+1<a&&(l[new e.S(t.overscaledZ,o,i.z,s,i.y+1).key]={backfilled:!1},l[new e.S(t.overscaledZ,t.wrap,i.z,i.x,i.y+1).key]={backfilled:!1},l[new e.S(t.overscaledZ,n,i.z,r,i.y+1).key]={backfilled:!1}),l}unloadTile(t){return e._(this,void 0,void 0,(function*(){t.demTexture&&this.map.painter.saveTileTexture(t.demTexture),t.fbo&&(t.fbo.destroy(),delete t.fbo),t.dem&&delete t.dem,delete t.neighboringTiles,t.state="unloaded",t.actor&&(yield t.actor.sendAsync({type:"RDT",data:{type:this.type,uid:t.uid,source:this.id}}));}))}}class J extends e.E{constructor(t,i,a,s){super(),this.id=t,this.type="geojson",this.minzoom=0,this.maxzoom=18,this.tileSize=512,this.isTileClipped=!0,this.reparseOverscaled=!0,this._removed=!1,this._pendingLoads=0,this.actor=a.getActor(),this.setEventedParent(s),this._data=i.data,this._options=e.e({},i),this._collectResourceTiming=i.collectResourceTiming,void 0!==i.maxzoom&&(this.maxzoom=i.maxzoom),i.type&&(this.type=i.type),i.attribution&&(this.attribution=i.attribution),this.promoteId=i.promoteId;const o=e.X/this.tileSize;void 0!==i.clusterMaxZoom&&this.maxzoom<=i.clusterMaxZoom&&e.w(`The maxzoom value "${this.maxzoom}" is expected to be greater than the clusterMaxZoom value "${i.clusterMaxZoom}".`),this.workerOptions=e.e({source:this.id,cluster:i.cluster||!1,geojsonVtOptions:{buffer:(void 0!==i.buffer?i.buffer:128)*o,tolerance:(void 0!==i.tolerance?i.tolerance:.375)*o,extent:e.X,maxZoom:this.maxzoom,lineMetrics:i.lineMetrics||!1,generateId:i.generateId||!1},superclusterOptions:{maxZoom:void 0!==i.clusterMaxZoom?i.clusterMaxZoom:this.maxzoom-1,minPoints:Math.max(2,i.clusterMinPoints||2),extent:e.X,radius:(i.clusterRadius||50)*o,log:!1,generateId:i.generateId||!1},clusterProperties:i.clusterProperties,filter:i.filter},i.workerOptions),"string"==typeof this.promoteId&&(this.workerOptions.promoteId=this.promoteId);}load(){return e._(this,void 0,void 0,(function*(){yield this._updateWorkerData();}))}onAdd(t){this.map=t,this.load();}setData(t){return this._data=t,this._updateWorkerData(),this}updateData(t){return this._updateWorkerData(t),this}getData(){return e._(this,void 0,void 0,(function*(){const t=e.e({type:this.type},this.workerOptions);return this.actor.sendAsync({type:"GD",data:t})}))}setClusterOptions(t){return this.workerOptions.cluster=t.cluster,t&&(void 0!==t.clusterRadius&&(this.workerOptions.superclusterOptions.radius=t.clusterRadius),void 0!==t.clusterMaxZoom&&(this.workerOptions.superclusterOptions.maxZoom=t.clusterMaxZoom)),this._updateWorkerData(),this}getClusterExpansionZoom(t){return this.actor.sendAsync({type:"GCEZ",data:{type:this.type,clusterId:t,source:this.id}})}getClusterChildren(t){return this.actor.sendAsync({type:"GCC",data:{type:this.type,clusterId:t,source:this.id}})}getClusterLeaves(t,e,i){return this.actor.sendAsync({type:"GCL",data:{type:this.type,source:this.id,clusterId:t,limit:e,offset:i}})}_updateWorkerData(t){return e._(this,void 0,void 0,(function*(){const i=e.e({type:this.type},this.workerOptions);t?i.dataDiff=t:"string"==typeof this._data?(i.request=this.map._requestManager.transformRequest(o.resolveURL(this._data),"Source"),i.request.collectResourceTiming=this._collectResourceTiming):i.data=JSON.stringify(this._data),this._pendingLoads++,this.fire(new e.k("dataloading",{dataType:"source"}));try{const t=yield this.actor.sendAsync({type:"LD",data:i});if(this._pendingLoads--,this._removed||t.abandoned)return void this.fire(new e.k("dataabort",{dataType:"source"}));let a=null;t.resourceTiming&&t.resourceTiming[this.id]&&(a=t.resourceTiming[this.id].slice(0));const s={dataType:"source"};this._collectResourceTiming&&a&&a.length>0&&e.e(s,{resourceTiming:a}),this.fire(new e.k("data",Object.assign(Object.assign({},s),{sourceDataType:"metadata"}))),this.fire(new e.k("data",Object.assign(Object.assign({},s),{sourceDataType:"content"})));}catch(t){if(this._pendingLoads--,this._removed)return void this.fire(new e.k("dataabort",{dataType:"source"}));this.fire(new e.j(t));}}))}loaded(){return 0===this._pendingLoads}loadTile(t){return e._(this,void 0,void 0,(function*(){const e=t.actor?"RT":"LT";t.actor=this.actor;const i={type:this.type,uid:t.uid,tileID:t.tileID,zoom:t.tileID.overscaledZ,maxZoom:this.maxzoom,tileSize:this.tileSize,source:this.id,pixelRatio:this.map.getPixelRatio(),showCollisionBoxes:this.map.showCollisionBoxes,promoteId:this.promoteId};t.abortController=new AbortController;const a=yield this.actor.sendAsync({type:e,data:i},t.abortController);delete t.abortController,t.unloadVectorData(),t.aborted||t.loadVectorData(a,this.map.painter,"RT"===e);}))}abortTile(t){return e._(this,void 0,void 0,(function*(){t.abortController&&(t.abortController.abort(),delete t.abortController),t.aborted=!0;}))}unloadTile(t){return e._(this,void 0,void 0,(function*(){t.unloadVectorData(),yield this.actor.sendAsync({type:"RMT",data:{uid:t.uid,type:this.type,source:this.id}});}))}onRemove(){this._removed=!0,this.actor.sendAsync({type:"RS",data:{type:this.type,source:this.id}});}serialize(){return e.e({},this._options,{type:this.type,data:this._data})}hasTransition(){return !1}}var Y=e.Y([{name:"a_pos",type:"Int16",components:2},{name:"a_texture_pos",type:"Int16",components:2}]);class Q extends e.E{constructor(t,e,i,a){super(),this.id=t,this.dispatcher=i,this.coordinates=e.coordinates,this.type="image",this.minzoom=0,this.maxzoom=22,this.tileSize=512,this.tiles={},this._loaded=!1,this.setEventedParent(a),this.options=e;}load(t){return e._(this,void 0,void 0,(function*(){this._loaded=!1,this.fire(new e.k("dataloading",{dataType:"source"})),this.url=this.options.url,this._request=new AbortController;try{const e=yield _.getImage(this.map._requestManager.transformRequest(this.url,"Image"),this._request);this._request=null,this._loaded=!0,e&&e.data&&(this.image=e.data,t&&(this.coordinates=t),this._finishLoading());}catch(t){this._request=null,this._loaded=!0,this.fire(new e.j(t));}}))}loaded(){return this._loaded}updateImage(t){return t.url?(this._request&&(this._request.abort(),this._request=null),this.options.url=t.url,this.load(t.coordinates).finally((()=>{this.texture=null;})),this):this}_finishLoading(){this.map&&(this.setCoordinates(this.coordinates),this.fire(new e.k("data",{dataType:"source",sourceDataType:"metadata"})));}onAdd(t){this.map=t,this.load();}onRemove(){this._request&&(this._request.abort(),this._request=null);}setCoordinates(t){this.coordinates=t;const i=t.map(e.Z.fromLngLat);this.tileID=function(t){let i=1/0,a=1/0,s=-1/0,o=-1/0;for(const e of t)i=Math.min(i,e.x),a=Math.min(a,e.y),s=Math.max(s,e.x),o=Math.max(o,e.y);const r=Math.max(s-i,o-a),n=Math.max(0,Math.floor(-Math.log(r)/Math.LN2)),l=Math.pow(2,n);return new e.a1(n,Math.floor((i+s)/2*l),Math.floor((a+o)/2*l))}(i),this.minzoom=this.maxzoom=this.tileID.z;const a=i.map((t=>this.tileID.getTilePoint(t)._round()));return this._boundsArray=new e.$,this._boundsArray.emplaceBack(a[0].x,a[0].y,0,0),this._boundsArray.emplaceBack(a[1].x,a[1].y,e.X,0),this._boundsArray.emplaceBack(a[3].x,a[3].y,0,e.X),this._boundsArray.emplaceBack(a[2].x,a[2].y,e.X,e.X),this.boundsBuffer&&(this.boundsBuffer.destroy(),delete this.boundsBuffer),this.fire(new e.k("data",{dataType:"source",sourceDataType:"content"})),this}prepare(){if(0===Object.keys(this.tiles).length||!this.image)return;const t=this.map.painter.context,i=t.gl;this.boundsBuffer||(this.boundsBuffer=t.createVertexBuffer(this._boundsArray,Y.members)),this.boundsSegments||(this.boundsSegments=e.a0.simpleSegment(0,0,4,2)),this.texture||(this.texture=new b(t,this.image,i.RGBA),this.texture.bind(i.LINEAR,i.CLAMP_TO_EDGE));let a=!1;for(const t in this.tiles){const e=this.tiles[t];"loaded"!==e.state&&(e.state="loaded",e.texture=this.texture,a=!0);}a&&this.fire(new e.k("data",{dataType:"source",sourceDataType:"idle",sourceId:this.id}));}loadTile(t){return e._(this,void 0,void 0,(function*(){this.tileID&&this.tileID.equals(t.tileID.canonical)?(this.tiles[String(t.tileID.wrap)]=t,t.buckets={}):t.state="errored";}))}serialize(){return {type:"image",url:this.options.url,coordinates:this.coordinates}}hasTransition(){return !1}}class tt extends Q{constructor(t,e,i,a){super(t,e,i,a),this.roundZoom=!0,this.type="video",this.options=e;}load(){return e._(this,void 0,void 0,(function*(){this._loaded=!1;const t=this.options;this.urls=[];for(const e of t.urls)this.urls.push(this.map._requestManager.transformRequest(e,"Source").url);try{const t=yield e.a3(this.urls);if(this._loaded=!0,!t)return;this.video=t,this.video.loop=!0,this.video.addEventListener("playing",(()=>{this.map.triggerRepaint();})),this.map&&this.video.play(),this._finishLoading();}catch(t){this.fire(new e.j(t));}}))}pause(){this.video&&this.video.pause();}play(){this.video&&this.video.play();}seek(t){if(this.video){const i=this.video.seekable;t<i.start(0)||t>i.end(0)?this.fire(new e.j(new e.a2(`sources.${this.id}`,null,`Playback for this video can be set only between the ${i.start(0)} and ${i.end(0)}-second mark.`))):this.video.currentTime=t;}}getVideo(){return this.video}onAdd(t){this.map||(this.map=t,this.load(),this.video&&(this.video.play(),this.setCoordinates(this.coordinates)));}prepare(){if(0===Object.keys(this.tiles).length||this.video.readyState<2)return;const t=this.map.painter.context,i=t.gl;this.boundsBuffer||(this.boundsBuffer=t.createVertexBuffer(this._boundsArray,Y.members)),this.boundsSegments||(this.boundsSegments=e.a0.simpleSegment(0,0,4,2)),this.texture?this.video.paused||(this.texture.bind(i.LINEAR,i.CLAMP_TO_EDGE),i.texSubImage2D(i.TEXTURE_2D,0,0,0,i.RGBA,i.UNSIGNED_BYTE,this.video)):(this.texture=new b(t,this.video,i.RGBA),this.texture.bind(i.LINEAR,i.CLAMP_TO_EDGE));let a=!1;for(const t in this.tiles){const e=this.tiles[t];"loaded"!==e.state&&(e.state="loaded",e.texture=this.texture,a=!0);}a&&this.fire(new e.k("data",{dataType:"source",sourceDataType:"idle",sourceId:this.id}));}serialize(){return {type:"video",urls:this.urls,coordinates:this.coordinates}}hasTransition(){return this.video&&!this.video.paused}}class et extends Q{constructor(t,i,a,s){super(t,i,a,s),i.coordinates?Array.isArray(i.coordinates)&&4===i.coordinates.length&&!i.coordinates.some((t=>!Array.isArray(t)||2!==t.length||t.some((t=>"number"!=typeof t))))||this.fire(new e.j(new e.a2(`sources.${t}`,null,'"coordinates" property must be an array of 4 longitude/latitude array pairs'))):this.fire(new e.j(new e.a2(`sources.${t}`,null,'missing required property "coordinates"'))),i.animate&&"boolean"!=typeof i.animate&&this.fire(new e.j(new e.a2(`sources.${t}`,null,'optional "animate" property must be a boolean value'))),i.canvas?"string"==typeof i.canvas||i.canvas instanceof HTMLCanvasElement||this.fire(new e.j(new e.a2(`sources.${t}`,null,'"canvas" must be either a string representing the ID of the canvas element from which to read, or an HTMLCanvasElement instance'))):this.fire(new e.j(new e.a2(`sources.${t}`,null,'missing required property "canvas"'))),this.options=i,this.animate=void 0===i.animate||i.animate;}load(){return e._(this,void 0,void 0,(function*(){this._loaded=!0,this.canvas||(this.canvas=this.options.canvas instanceof HTMLCanvasElement?this.options.canvas:document.getElementById(this.options.canvas)),this.width=this.canvas.width,this.height=this.canvas.height,this._hasInvalidDimensions()?this.fire(new e.j(new Error("Canvas dimensions cannot be less than or equal to zero."))):(this.play=function(){this._playing=!0,this.map.triggerRepaint();},this.pause=function(){this._playing&&(this.prepare(),this._playing=!1);},this._finishLoading());}))}getCanvas(){return this.canvas}onAdd(t){this.map=t,this.load(),this.canvas&&this.animate&&this.play();}onRemove(){this.pause();}prepare(){let t=!1;if(this.canvas.width!==this.width&&(this.width=this.canvas.width,t=!0),this.canvas.height!==this.height&&(this.height=this.canvas.height,t=!0),this._hasInvalidDimensions())return;if(0===Object.keys(this.tiles).length)return;const i=this.map.painter.context,a=i.gl;this.boundsBuffer||(this.boundsBuffer=i.createVertexBuffer(this._boundsArray,Y.members)),this.boundsSegments||(this.boundsSegments=e.a0.simpleSegment(0,0,4,2)),this.texture?(t||this._playing)&&this.texture.update(this.canvas,{premultiply:!0}):this.texture=new b(i,this.canvas,a.RGBA,{premultiply:!0});let s=!1;for(const t in this.tiles){const e=this.tiles[t];"loaded"!==e.state&&(e.state="loaded",e.texture=this.texture,s=!0);}s&&this.fire(new e.k("data",{dataType:"source",sourceDataType:"idle",sourceId:this.id}));}serialize(){return {type:"canvas",coordinates:this.coordinates}}hasTransition(){return this._playing}_hasInvalidDimensions(){for(const t of [this.canvas.width,this.canvas.height])if(isNaN(t)||t<=0)return !0;return !1}}const it={},at=t=>{switch(t){case"geojson":return J;case"image":return Q;case"raster":return X;case"raster-dem":return K;case"vector":return $;case"video":return tt;case"canvas":return et}return it[t]},st="RTLPluginLoaded";class ot extends e.E{constructor(){super(...arguments),this.status="unavailable",this.url=null,this.dispatcher=j();}_syncState(t){return this.status=t,this.dispatcher.broadcast("SRPS",{pluginStatus:t,pluginURL:this.url}).catch((t=>{throw this.status="error",t}))}getRTLTextPluginStatus(){return this.status}clearRTLTextPlugin(){this.status="unavailable",this.url=null;}setRTLTextPlugin(t){return e._(this,arguments,void 0,(function*(t,e=!1){if(this.url)throw new Error("setRTLTextPlugin cannot be called multiple times.");if(this.url=o.resolveURL(t),!this.url)throw new Error(`requested url ${t} is invalid`);if("unavailable"===this.status){if(!e)return this._requestImport();this.status="deferred",this._syncState(this.status);}else if("requested"===this.status)return this._requestImport()}))}_requestImport(){return e._(this,void 0,void 0,(function*(){yield this._syncState("loading"),this.status="loaded",this.fire(new e.k(st));}))}lazyLoad(){"unavailable"===this.status?this.status="requested":"deferred"===this.status&&this._requestImport();}}let rt=null;function nt(){return rt||(rt=new ot),rt}class lt{constructor(t,i){this.timeAdded=0,this.fadeEndTime=0,this.tileID=t,this.uid=e.a4(),this.uses=0,this.tileSize=i,this.buckets={},this.expirationTime=null,this.queryPadding=0,this.hasSymbolBuckets=!1,this.hasRTLText=!1,this.dependencies={},this.rtt=[],this.rttCoords={},this.expiredRequestCount=0,this.state="loading";}registerFadeDuration(t){const e=t+this.timeAdded;e<this.fadeEndTime||(this.fadeEndTime=e);}wasRequested(){return "errored"===this.state||"loaded"===this.state||"reloading"===this.state}clearTextures(t){this.demTexture&&t.saveTileTexture(this.demTexture),this.demTexture=null;}loadVectorData(t,i,a){if(this.hasData()&&this.unloadVectorData(),this.state="loaded",t){t.featureIndex&&(this.latestFeatureIndex=t.featureIndex,t.rawTileData?(this.latestRawTileData=t.rawTileData,this.latestFeatureIndex.rawTileData=t.rawTileData):this.latestRawTileData&&(this.latestFeatureIndex.rawTileData=this.latestRawTileData)),this.collisionBoxArray=t.collisionBoxArray,this.buckets=function(t,e){const i={};if(!e)return i;for(const a of t){const t=a.layerIds.map((t=>e.getLayer(t))).filter(Boolean);if(0!==t.length){a.layers=t,a.stateDependentLayerIds&&(a.stateDependentLayers=a.stateDependentLayerIds.map((e=>t.filter((t=>t.id===e))[0])));for(const e of t)i[e.id]=a;}}return i}(t.buckets,i.style),this.hasSymbolBuckets=!1;for(const t in this.buckets){const i=this.buckets[t];if(i instanceof e.a6){if(this.hasSymbolBuckets=!0,!a)break;i.justReloaded=!0;}}if(this.hasRTLText=!1,this.hasSymbolBuckets)for(const t in this.buckets){const i=this.buckets[t];if(i instanceof e.a6&&i.hasRTLText){this.hasRTLText=!0,nt().lazyLoad();break}}this.queryPadding=0;for(const t in this.buckets){const e=this.buckets[t];this.queryPadding=Math.max(this.queryPadding,i.style.getLayer(t).queryRadius(e));}t.imageAtlas&&(this.imageAtlas=t.imageAtlas),t.glyphAtlasImage&&(this.glyphAtlasImage=t.glyphAtlasImage);}else this.collisionBoxArray=new e.a5;}unloadVectorData(){for(const t in this.buckets)this.buckets[t].destroy();this.buckets={},this.imageAtlasTexture&&this.imageAtlasTexture.destroy(),this.imageAtlas&&(this.imageAtlas=null),this.glyphAtlasTexture&&this.glyphAtlasTexture.destroy(),this.latestFeatureIndex=null,this.state="unloaded";}getBucket(t){return this.buckets[t.id]}upload(t){for(const e in this.buckets){const i=this.buckets[e];i.uploadPending()&&i.upload(t);}const e=t.gl;this.imageAtlas&&!this.imageAtlas.uploaded&&(this.imageAtlasTexture=new b(t,this.imageAtlas.image,e.RGBA),this.imageAtlas.uploaded=!0),this.glyphAtlasImage&&(this.glyphAtlasTexture=new b(t,this.glyphAtlasImage,e.ALPHA),this.glyphAtlasImage=null);}prepare(t){this.imageAtlas&&this.imageAtlas.patchUpdatedImages(t,this.imageAtlasTexture);}queryRenderedFeatures(t,e,i,a,s,o,r,n,l,h){return this.latestFeatureIndex&&this.latestFeatureIndex.rawTileData?this.latestFeatureIndex.query({queryGeometry:a,cameraQueryGeometry:s,scale:o,tileSize:this.tileSize,pixelPosMatrix:h,transform:n,params:r,queryPadding:this.queryPadding*l},t,e,i):{}}querySourceFeatures(t,i){const a=this.latestFeatureIndex;if(!a||!a.rawTileData)return;const s=a.loadVTLayers(),o=i&&i.sourceLayer?i.sourceLayer:"",r=s._geojsonTileLayer||s[o];if(!r)return;const n=e.a7(i&&i.filter),{z:l,x:h,y:c}=this.tileID.canonical,u={z:l,x:h,y:c};for(let i=0;i<r.length;i++){const s=r.feature(i);if(n.needGeometry){const t=e.a8(s,!0);if(!n.filter(new e.z(this.tileID.overscaledZ),t,this.tileID.canonical))continue}else if(!n.filter(new e.z(this.tileID.overscaledZ),s))continue;const d=a.getId(s,o),_=new e.a9(s,l,h,c,d);_.tile=u,t.push(_);}}hasData(){return "loaded"===this.state||"reloading"===this.state||"expired"===this.state}patternsLoaded(){return this.imageAtlas&&!!Object.keys(this.imageAtlas.patternPositions).length}setExpiryData(t){const i=this.expirationTime;if(t.cacheControl){const i=e.aa(t.cacheControl);i["max-age"]&&(this.expirationTime=Date.now()+1e3*i["max-age"]);}else t.expires&&(this.expirationTime=new Date(t.expires).getTime());if(this.expirationTime){const t=Date.now();let e=!1;if(this.expirationTime>t)e=!1;else if(i)if(this.expirationTime<i)e=!0;else {const a=this.expirationTime-i;a?this.expirationTime=t+Math.max(a,3e4):e=!0;}else e=!0;e?(this.expiredRequestCount++,this.state="expired"):this.expiredRequestCount=0;}}getExpiryTimeout(){if(this.expirationTime)return this.expiredRequestCount?1e3*(1<<Math.min(this.expiredRequestCount-1,31)):Math.min(this.expirationTime-(new Date).getTime(),Math.pow(2,31)-1)}setFeatureState(t,e){if(!this.latestFeatureIndex||!this.latestFeatureIndex.rawTileData||0===Object.keys(t).length)return;const i=this.latestFeatureIndex.loadVTLayers();for(const a in this.buckets){if(!e.style.hasLayer(a))continue;const s=this.buckets[a],o=s.layers[0].sourceLayer||"_geojsonTileLayer",r=i[o],n=t[o];if(!r||!n||0===Object.keys(n).length)continue;s.update(n,r,this.imageAtlas&&this.imageAtlas.patternPositions||{});const l=e&&e.style&&e.style.getLayer(a);l&&(this.queryPadding=Math.max(this.queryPadding,l.queryRadius(s)));}}holdingForFade(){return void 0!==this.symbolFadeHoldUntil}symbolFadeFinished(){return !this.symbolFadeHoldUntil||this.symbolFadeHoldUntil<o.now()}clearFadeHold(){this.symbolFadeHoldUntil=void 0;}setHoldDuration(t){this.symbolFadeHoldUntil=o.now()+t;}setDependencies(t,e){const i={};for(const t of e)i[t]=!0;this.dependencies[t]=i;}hasDependency(t,e){for(const i of t){const t=this.dependencies[i];if(t)for(const i of e)if(t[i])return !0}return !1}}class ht{constructor(t,e){this.max=t,this.onRemove=e,this.reset();}reset(){for(const t in this.data)for(const e of this.data[t])e.timeout&&clearTimeout(e.timeout),this.onRemove(e.value);return this.data={},this.order=[],this}add(t,e,i){const a=t.wrapped().key;void 0===this.data[a]&&(this.data[a]=[]);const s={value:e,timeout:void 0};if(void 0!==i&&(s.timeout=setTimeout((()=>{this.remove(t,s);}),i)),this.data[a].push(s),this.order.push(a),this.order.length>this.max){const t=this._getAndRemoveByKey(this.order[0]);t&&this.onRemove(t);}return this}has(t){return t.wrapped().key in this.data}getAndRemove(t){return this.has(t)?this._getAndRemoveByKey(t.wrapped().key):null}_getAndRemoveByKey(t){const e=this.data[t].shift();return e.timeout&&clearTimeout(e.timeout),0===this.data[t].length&&delete this.data[t],this.order.splice(this.order.indexOf(t),1),e.value}getByKey(t){const e=this.data[t];return e?e[0].value:null}get(t){return this.has(t)?this.data[t.wrapped().key][0].value:null}remove(t,e){if(!this.has(t))return this;const i=t.wrapped().key,a=void 0===e?0:this.data[i].indexOf(e),s=this.data[i][a];return this.data[i].splice(a,1),s.timeout&&clearTimeout(s.timeout),0===this.data[i].length&&delete this.data[i],this.onRemove(s.value),this.order.splice(this.order.indexOf(i),1),this}setMaxSize(t){for(this.max=t;this.order.length>this.max;){const t=this._getAndRemoveByKey(this.order[0]);t&&this.onRemove(t);}return this}filter(t){const e=[];for(const i in this.data)for(const a of this.data[i])t(a.value)||e.push(a);for(const t of e)this.remove(t.value.tileID,t);}}class ct{constructor(){this.state={},this.stateChanges={},this.deletedStates={};}updateState(t,i,a){const s=String(i);if(this.stateChanges[t]=this.stateChanges[t]||{},this.stateChanges[t][s]=this.stateChanges[t][s]||{},e.e(this.stateChanges[t][s],a),null===this.deletedStates[t]){this.deletedStates[t]={};for(const e in this.state[t])e!==s&&(this.deletedStates[t][e]=null);}else if(this.deletedStates[t]&&null===this.deletedStates[t][s]){this.deletedStates[t][s]={};for(const e in this.state[t][s])a[e]||(this.deletedStates[t][s][e]=null);}else for(const e in a)this.deletedStates[t]&&this.deletedStates[t][s]&&null===this.deletedStates[t][s][e]&&delete this.deletedStates[t][s][e];}removeFeatureState(t,e,i){if(null===this.deletedStates[t])return;const a=String(e);if(this.deletedStates[t]=this.deletedStates[t]||{},i&&void 0!==e)null!==this.deletedStates[t][a]&&(this.deletedStates[t][a]=this.deletedStates[t][a]||{},this.deletedStates[t][a][i]=null);else if(void 0!==e)if(this.stateChanges[t]&&this.stateChanges[t][a])for(i in this.deletedStates[t][a]={},this.stateChanges[t][a])this.deletedStates[t][a][i]=null;else this.deletedStates[t][a]=null;else this.deletedStates[t]=null;}getState(t,i){const a=String(i),s=e.e({},(this.state[t]||{})[a],(this.stateChanges[t]||{})[a]);if(null===this.deletedStates[t])return {};if(this.deletedStates[t]){const e=this.deletedStates[t][i];if(null===e)return {};for(const t in e)delete s[t];}return s}initializeTileState(t,e){t.setFeatureState(this.state,e);}coalesceChanges(t,i){const a={};for(const t in this.stateChanges){this.state[t]=this.state[t]||{};const i={};for(const a in this.stateChanges[t])this.state[t][a]||(this.state[t][a]={}),e.e(this.state[t][a],this.stateChanges[t][a]),i[a]=this.state[t][a];a[t]=i;}for(const t in this.deletedStates){this.state[t]=this.state[t]||{};const i={};if(null===this.deletedStates[t])for(const e in this.state[t])i[e]={},this.state[t][e]={};else for(const e in this.deletedStates[t]){if(null===this.deletedStates[t][e])this.state[t][e]={};else for(const i of Object.keys(this.deletedStates[t][e]))delete this.state[t][e][i];i[e]=this.state[t][e];}a[t]=a[t]||{},e.e(a[t],i);}if(this.stateChanges={},this.deletedStates={},0!==Object.keys(a).length)for(const e in t)t[e].setFeatureState(a,i);}}class ut extends e.E{constructor(t,e,i){super(),this.id=t,this.dispatcher=i,this.on("data",(t=>this._dataHandler(t))),this.on("dataloading",(()=>{this._sourceErrored=!1;})),this.on("error",(()=>{this._sourceErrored=this._source.loaded();})),this._source=((t,e,i,a)=>{const s=new(at(e.type))(t,e,i,a);if(s.id!==t)throw new Error(`Expected Source id to be ${t} instead of ${s.id}`);return s})(t,e,i,this),this._tiles={},this._cache=new ht(0,(t=>this._unloadTile(t))),this._timers={},this._cacheTimers={},this._maxTileCacheSize=null,this._maxTileCacheZoomLevels=null,this._loadedParentTiles={},this._coveredTiles={},this._state=new ct,this._didEmitContent=!1,this._updated=!1;}onAdd(t){this.map=t,this._maxTileCacheSize=t?t._maxTileCacheSize:null,this._maxTileCacheZoomLevels=t?t._maxTileCacheZoomLevels:null,this._source&&this._source.onAdd&&this._source.onAdd(t);}onRemove(t){this.clearTiles(),this._source&&this._source.onRemove&&this._source.onRemove(t);}loaded(){if(this._sourceErrored)return !0;if(!this._sourceLoaded)return !1;if(!this._source.loaded())return !1;if(!(void 0===this.used&&void 0===this.usedForTerrain||this.used||this.usedForTerrain))return !0;if(!this._updated)return !1;for(const t in this._tiles){const e=this._tiles[t];if("loaded"!==e.state&&"errored"!==e.state)return !1}return !0}getSource(){return this._source}pause(){this._paused=!0;}resume(){if(!this._paused)return;const t=this._shouldReloadOnResume;this._paused=!1,this._shouldReloadOnResume=!1,t&&this.reload(),this.transform&&this.update(this.transform,this.terrain);}_loadTile(t,i,a){return e._(this,void 0,void 0,(function*(){try{yield this._source.loadTile(t),this._tileLoaded(t,i,a);}catch(i){t.state="errored",404!==i.status?this._source.fire(new e.j(i,{tile:t})):this.update(this.transform,this.terrain);}}))}_unloadTile(t){this._source.unloadTile&&this._source.unloadTile(t);}_abortTile(t){this._source.abortTile&&this._source.abortTile(t),this._source.fire(new e.k("dataabort",{tile:t,coord:t.tileID,dataType:"source"}));}serialize(){return this._source.serialize()}prepare(t){this._source.prepare&&this._source.prepare(),this._state.coalesceChanges(this._tiles,this.map?this.map.painter:null);for(const e in this._tiles){const i=this._tiles[e];i.upload(t),i.prepare(this.map.style.imageManager);}}getIds(){return Object.values(this._tiles).map((t=>t.tileID)).sort(dt).map((t=>t.key))}getRenderableIds(t){const i=[];for(const e in this._tiles)this._isIdRenderable(e,t)&&i.push(this._tiles[e]);return t?i.sort(((t,i)=>{const a=t.tileID,s=i.tileID,o=new e.P(a.canonical.x,a.canonical.y)._rotate(this.transform.angle),r=new e.P(s.canonical.x,s.canonical.y)._rotate(this.transform.angle);return a.overscaledZ-s.overscaledZ||r.y-o.y||r.x-o.x})).map((t=>t.tileID.key)):i.map((t=>t.tileID)).sort(dt).map((t=>t.key))}hasRenderableParent(t){const e=this.findLoadedParent(t,0);return !!e&&this._isIdRenderable(e.tileID.key)}_isIdRenderable(t,e){return this._tiles[t]&&this._tiles[t].hasData()&&!this._coveredTiles[t]&&(e||!this._tiles[t].holdingForFade())}reload(){if(this._paused)this._shouldReloadOnResume=!0;else {this._cache.reset();for(const t in this._tiles)"errored"!==this._tiles[t].state&&this._reloadTile(t,"reloading");}}_reloadTile(t,i){return e._(this,void 0,void 0,(function*(){const e=this._tiles[t];e&&("loading"!==e.state&&(e.state=i),yield this._loadTile(e,t,i));}))}_tileLoaded(t,i,a){t.timeAdded=o.now(),"expired"===a&&(t.refreshedUponExpiration=!0),this._setTileReloadTimer(i,t),"raster-dem"===this.getSource().type&&t.dem&&this._backfillDEM(t),this._state.initializeTileState(t,this.map?this.map.painter:null),t.aborted||this._source.fire(new e.k("data",{dataType:"source",tile:t,coord:t.tileID}));}_backfillDEM(t){const e=this.getRenderableIds();for(let a=0;a<e.length;a++){const s=e[a];if(t.neighboringTiles&&t.neighboringTiles[s]){const e=this.getTileByID(s);i(t,e),i(e,t);}}function i(t,e){t.needsHillshadePrepare=!0,t.needsTerrainPrepare=!0;let i=e.tileID.canonical.x-t.tileID.canonical.x;const a=e.tileID.canonical.y-t.tileID.canonical.y,s=Math.pow(2,t.tileID.canonical.z),o=e.tileID.key;0===i&&0===a||Math.abs(a)>1||(Math.abs(i)>1&&(1===Math.abs(i+s)?i+=s:1===Math.abs(i-s)&&(i-=s)),e.dem&&t.dem&&(t.dem.backfillBorder(e.dem,i,a),t.neighboringTiles&&t.neighboringTiles[o]&&(t.neighboringTiles[o].backfilled=!0)));}}getTile(t){return this.getTileByID(t.key)}getTileByID(t){return this._tiles[t]}_retainLoadedChildren(t,e,i,a){for(const s in this._tiles){let o=this._tiles[s];if(a[s]||!o.hasData()||o.tileID.overscaledZ<=e||o.tileID.overscaledZ>i)continue;let r=o.tileID;for(;o&&o.tileID.overscaledZ>e+1;){const t=o.tileID.scaledTo(o.tileID.overscaledZ-1);o=this._tiles[t.key],o&&o.hasData()&&(r=t);}let n=r;for(;n.overscaledZ>e;)if(n=n.scaledTo(n.overscaledZ-1),t[n.key]){a[r.key]=r;break}}}findLoadedParent(t,e){if(t.key in this._loadedParentTiles){const i=this._loadedParentTiles[t.key];return i&&i.tileID.overscaledZ>=e?i:null}for(let i=t.overscaledZ-1;i>=e;i--){const e=t.scaledTo(i),a=this._getLoadedTile(e);if(a)return a}}findLoadedSibling(t){return this._getLoadedTile(t)}_getLoadedTile(t){const e=this._tiles[t.key];return e&&e.hasData()?e:this._cache.getByKey(t.wrapped().key)}updateCacheSize(t){const i=Math.ceil(t.width/this._source.tileSize)+1,a=Math.ceil(t.height/this._source.tileSize)+1,s=Math.floor(i*a*(null===this._maxTileCacheZoomLevels?e.a.MAX_TILE_CACHE_ZOOM_LEVELS:this._maxTileCacheZoomLevels)),o="number"==typeof this._maxTileCacheSize?Math.min(this._maxTileCacheSize,s):s;this._cache.setMaxSize(o);}handleWrapJump(t){const e=Math.round((t-(void 0===this._prevLng?t:this._prevLng))/360);if(this._prevLng=t,e){const t={};for(const i in this._tiles){const a=this._tiles[i];a.tileID=a.tileID.unwrapTo(a.tileID.wrap+e),t[a.tileID.key]=a;}this._tiles=t;for(const t in this._timers)clearTimeout(this._timers[t]),delete this._timers[t];for(const t in this._tiles)this._setTileReloadTimer(t,this._tiles[t]);}}_updateCoveredAndRetainedTiles(t,e,i,a,s,r){const n={},l={},h=Object.keys(t),c=o.now();for(const i of h){const a=t[i],s=this._tiles[i];if(!s||0!==s.fadeEndTime&&s.fadeEndTime<=c)continue;const o=this.findLoadedParent(a,e),r=this.findLoadedSibling(a),h=o||r||null;h&&(this._addTile(h.tileID),n[h.tileID.key]=h.tileID),l[i]=a;}this._retainLoadedChildren(l,a,i,t);for(const e in n)t[e]||(this._coveredTiles[e]=!0,t[e]=n[e]);if(r){const e={},i={};for(const t of s)this._tiles[t.key].hasData()?e[t.key]=t:i[t.key]=t;for(const a in i){const s=i[a].children(this._source.maxzoom);this._tiles[s[0].key]&&this._tiles[s[1].key]&&this._tiles[s[2].key]&&this._tiles[s[3].key]&&(e[s[0].key]=t[s[0].key]=s[0],e[s[1].key]=t[s[1].key]=s[1],e[s[2].key]=t[s[2].key]=s[2],e[s[3].key]=t[s[3].key]=s[3],delete i[a]);}for(const a in i){const s=i[a],o=this.findLoadedParent(s,this._source.minzoom),r=this.findLoadedSibling(s),n=o||r||null;if(n){e[n.tileID.key]=t[n.tileID.key]=n.tileID;for(const t in e)e[t].isChildOf(n.tileID)&&delete e[t];}}for(const t in this._tiles)e[t]||(this._coveredTiles[t]=!0);}}update(t,i){if(!this._sourceLoaded||this._paused)return;let a;this.transform=t,this.terrain=i,this.updateCacheSize(t),this.handleWrapJump(this.transform.center.lng),this._coveredTiles={},this.used||this.usedForTerrain?this._source.tileID?a=t.getVisibleUnwrappedCoordinates(this._source.tileID).map((t=>new e.S(t.canonical.z,t.wrap,t.canonical.z,t.canonical.x,t.canonical.y))):(a=t.coveringTiles({tileSize:this.usedForTerrain?this.tileSize:this._source.tileSize,minzoom:this._source.minzoom,maxzoom:this._source.maxzoom,roundZoom:!this.usedForTerrain&&this._source.roundZoom,reparseOverscaled:this._source.reparseOverscaled,terrain:i}),this._source.hasTile&&(a=a.filter((t=>this._source.hasTile(t))))):a=[];const s=t.coveringZoomLevel(this._source),o=Math.max(s-ut.maxOverzooming,this._source.minzoom),r=Math.max(s+ut.maxUnderzooming,this._source.minzoom);if(this.usedForTerrain){const t={};for(const e of a)if(e.canonical.z>this._source.minzoom){const i=e.scaledTo(e.canonical.z-1);t[i.key]=i;const a=e.scaledTo(Math.max(this._source.minzoom,Math.min(e.canonical.z,5)));t[a.key]=a;}a=a.concat(Object.values(t));}const n=0===a.length&&!this._updated&&this._didEmitContent;this._updated=!0,n&&this.fire(new e.k("data",{sourceDataType:"idle",dataType:"source",sourceId:this.id}));const l=this._updateRetainedTiles(a,s);_t(this._source.type)&&this._updateCoveredAndRetainedTiles(l,o,r,s,a,i);for(const t in l)this._tiles[t].clearFadeHold();const h=e.ab(this._tiles,l);for(const t of h){const e=this._tiles[t];e.hasSymbolBuckets&&!e.holdingForFade()?e.setHoldDuration(this.map._fadeDuration):e.hasSymbolBuckets&&!e.symbolFadeFinished()||this._removeTile(t);}this._updateLoadedParentTileCache(),this._updateLoadedSiblingTileCache();}releaseSymbolFadeTiles(){for(const t in this._tiles)this._tiles[t].holdingForFade()&&this._removeTile(t);}_updateRetainedTiles(t,e){var i;const a={},s={},o=Math.max(e-ut.maxOverzooming,this._source.minzoom),r=Math.max(e+ut.maxUnderzooming,this._source.minzoom),n={};for(const i of t){const t=this._addTile(i);a[i.key]=i,t.hasData()||e<this._source.maxzoom&&(n[i.key]=i);}this._retainLoadedChildren(n,e,r,a);for(const r of t){let t=this._tiles[r.key];if(t.hasData())continue;if(e+1>this._source.maxzoom){const t=r.children(this._source.maxzoom)[0],e=this.getTile(t);if(e&&e.hasData()){a[t.key]=t;continue}}else {const t=r.children(this._source.maxzoom);if(a[t[0].key]&&a[t[1].key]&&a[t[2].key]&&a[t[3].key])continue}let n=t.wasRequested();for(let e=r.overscaledZ-1;e>=o;--e){const o=r.scaledTo(e);if(s[o.key])break;if(s[o.key]=!0,t=this.getTile(o),!t&&n&&(t=this._addTile(o)),t){const e=t.hasData();if((e||!(null===(i=this.map)||void 0===i?void 0:i.cancelPendingTileRequestsWhileZooming)||n)&&(a[o.key]=o),n=t.wasRequested(),e)break}}}return a}_updateLoadedParentTileCache(){this._loadedParentTiles={};for(const t in this._tiles){const e=[];let i,a=this._tiles[t].tileID;for(;a.overscaledZ>0;){if(a.key in this._loadedParentTiles){i=this._loadedParentTiles[a.key];break}e.push(a.key);const t=a.scaledTo(a.overscaledZ-1);if(i=this._getLoadedTile(t),i)break;a=t;}for(const t of e)this._loadedParentTiles[t]=i;}}_updateLoadedSiblingTileCache(){this._loadedSiblingTiles={};for(const t in this._tiles){const e=this._tiles[t].tileID,i=this._getLoadedTile(e);this._loadedSiblingTiles[e.key]=i;}}_addTile(t){let i=this._tiles[t.key];if(i)return i;i=this._cache.getAndRemove(t),i&&(this._setTileReloadTimer(t.key,i),i.tileID=t,this._state.initializeTileState(i,this.map?this.map.painter:null),this._cacheTimers[t.key]&&(clearTimeout(this._cacheTimers[t.key]),delete this._cacheTimers[t.key],this._setTileReloadTimer(t.key,i)));const a=i;return i||(i=new lt(t,this._source.tileSize*t.overscaleFactor()),this._loadTile(i,t.key,i.state)),i.uses++,this._tiles[t.key]=i,a||this._source.fire(new e.k("dataloading",{tile:i,coord:i.tileID,dataType:"source"})),i}_setTileReloadTimer(t,e){t in this._timers&&(clearTimeout(this._timers[t]),delete this._timers[t]);const i=e.getExpiryTimeout();i&&(this._timers[t]=setTimeout((()=>{this._reloadTile(t,"expired"),delete this._timers[t];}),i));}_removeTile(t){const e=this._tiles[t];e&&(e.uses--,delete this._tiles[t],this._timers[t]&&(clearTimeout(this._timers[t]),delete this._timers[t]),e.uses>0||(e.hasData()&&"reloading"!==e.state?this._cache.add(e.tileID,e,e.getExpiryTimeout()):(e.aborted=!0,this._abortTile(e),this._unloadTile(e))));}_dataHandler(t){const e=t.sourceDataType;"source"===t.dataType&&"metadata"===e&&(this._sourceLoaded=!0),this._sourceLoaded&&!this._paused&&"source"===t.dataType&&"content"===e&&(this.reload(),this.transform&&this.update(this.transform,this.terrain),this._didEmitContent=!0);}clearTiles(){this._shouldReloadOnResume=!1,this._paused=!1;for(const t in this._tiles)this._removeTile(t);this._cache.reset();}tilesIn(t,i,a){const s=[],o=this.transform;if(!o)return s;const r=a?o.getCameraQueryGeometry(t):t,n=t.map((t=>o.pointCoordinate(t,this.terrain))),l=r.map((t=>o.pointCoordinate(t,this.terrain))),h=this.getIds();let c=1/0,u=1/0,d=-1/0,_=-1/0;for(const t of l)c=Math.min(c,t.x),u=Math.min(u,t.y),d=Math.max(d,t.x),_=Math.max(_,t.y);for(let t=0;t<h.length;t++){const a=this._tiles[h[t]];if(a.holdingForFade())continue;const r=a.tileID,p=Math.pow(2,o.zoom-a.tileID.overscaledZ),m=i*a.queryPadding*e.X/a.tileSize/p,f=[r.getTilePoint(new e.Z(c,u)),r.getTilePoint(new e.Z(d,_))];if(f[0].x-m<e.X&&f[0].y-m<e.X&&f[1].x+m>=0&&f[1].y+m>=0){const t=n.map((t=>r.getTilePoint(t))),e=l.map((t=>r.getTilePoint(t)));s.push({tile:a,tileID:r,queryGeometry:t,cameraQueryGeometry:e,scale:p});}}return s}getVisibleCoordinates(t){const e=this.getRenderableIds(t).map((t=>this._tiles[t].tileID));for(const t of e)t.posMatrix=this.transform.calculatePosMatrix(t.toUnwrapped());return e}hasTransition(){if(this._source.hasTransition())return !0;if(_t(this._source.type)){const t=o.now();for(const e in this._tiles)if(this._tiles[e].fadeEndTime>=t)return !0}return !1}setFeatureState(t,e,i){this._state.updateState(t=t||"_geojsonTileLayer",e,i);}removeFeatureState(t,e,i){this._state.removeFeatureState(t=t||"_geojsonTileLayer",e,i);}getFeatureState(t,e){return this._state.getState(t=t||"_geojsonTileLayer",e)}setDependencies(t,e,i){const a=this._tiles[t];a&&a.setDependencies(e,i);}reloadTilesForDependencies(t,e){for(const i in this._tiles)this._tiles[i].hasDependency(t,e)&&this._reloadTile(i,"reloading");this._cache.filter((i=>!i.hasDependency(t,e)));}}function dt(t,e){const i=Math.abs(2*t.wrap)-+(t.wrap<0),a=Math.abs(2*e.wrap)-+(e.wrap<0);return t.overscaledZ-e.overscaledZ||a-i||e.canonical.y-t.canonical.y||e.canonical.x-t.canonical.x}function _t(t){return "raster"===t||"image"===t||"video"===t}ut.maxOverzooming=10,ut.maxUnderzooming=3;class pt{constructor(t,e){this.reset(t,e);}reset(t,e){this.points=t||[],this._distances=[0];for(let t=1;t<this.points.length;t++)this._distances[t]=this._distances[t-1]+this.points[t].dist(this.points[t-1]);this.length=this._distances[this._distances.length-1],this.padding=Math.min(e||0,.5*this.length),this.paddedLength=this.length-2*this.padding;}lerp(t){if(1===this.points.length)return this.points[0];t=e.ac(t,0,1);let i=1,a=this._distances[i];const s=t*this.paddedLength+this.padding;for(;a<s&&i<this._distances.length;)a=this._distances[++i];const o=i-1,r=this._distances[o],n=a-r,l=n>0?(s-r)/n:0;return this.points[o].mult(1-l).add(this.points[i].mult(l))}}function mt(t,e){let i=!0;return "always"===t||"never"!==t&&"never"!==e||(i=!1),i}class ft{constructor(t,e,i){const a=this.boxCells=[],s=this.circleCells=[];this.xCellCount=Math.ceil(t/i),this.yCellCount=Math.ceil(e/i);for(let t=0;t<this.xCellCount*this.yCellCount;t++)a.push([]),s.push([]);this.circleKeys=[],this.boxKeys=[],this.bboxes=[],this.circles=[],this.width=t,this.height=e,this.xScale=this.xCellCount/t,this.yScale=this.yCellCount/e,this.boxUid=0,this.circleUid=0;}keysLength(){return this.boxKeys.length+this.circleKeys.length}insert(t,e,i,a,s){this._forEachCell(e,i,a,s,this._insertBoxCell,this.boxUid++),this.boxKeys.push(t),this.bboxes.push(e),this.bboxes.push(i),this.bboxes.push(a),this.bboxes.push(s);}insertCircle(t,e,i,a){this._forEachCell(e-a,i-a,e+a,i+a,this._insertCircleCell,this.circleUid++),this.circleKeys.push(t),this.circles.push(e),this.circles.push(i),this.circles.push(a);}_insertBoxCell(t,e,i,a,s,o){this.boxCells[s].push(o);}_insertCircleCell(t,e,i,a,s,o){this.circleCells[s].push(o);}_query(t,e,i,a,s,o,r){if(i<0||t>this.width||a<0||e>this.height)return [];const n=[];if(t<=0&&e<=0&&this.width<=i&&this.height<=a){if(s)return [{key:null,x1:t,y1:e,x2:i,y2:a}];for(let t=0;t<this.boxKeys.length;t++)n.push({key:this.boxKeys[t],x1:this.bboxes[4*t],y1:this.bboxes[4*t+1],x2:this.bboxes[4*t+2],y2:this.bboxes[4*t+3]});for(let t=0;t<this.circleKeys.length;t++){const e=this.circles[3*t],i=this.circles[3*t+1],a=this.circles[3*t+2];n.push({key:this.circleKeys[t],x1:e-a,y1:i-a,x2:e+a,y2:i+a});}}else this._forEachCell(t,e,i,a,this._queryCell,n,{hitTest:s,overlapMode:o,seenUids:{box:{},circle:{}}},r);return n}query(t,e,i,a){return this._query(t,e,i,a,!1,null)}hitTest(t,e,i,a,s,o){return this._query(t,e,i,a,!0,s,o).length>0}hitTestCircle(t,e,i,a,s){const o=t-i,r=t+i,n=e-i,l=e+i;if(r<0||o>this.width||l<0||n>this.height)return !1;const h=[];return this._forEachCell(o,n,r,l,this._queryCellCircle,h,{hitTest:!0,overlapMode:a,circle:{x:t,y:e,radius:i},seenUids:{box:{},circle:{}}},s),h.length>0}_queryCell(t,e,i,a,s,o,r,n){const{seenUids:l,hitTest:h,overlapMode:c}=r,u=this.boxCells[s];if(null!==u){const s=this.bboxes;for(const r of u)if(!l.box[r]){l.box[r]=!0;const u=4*r,d=this.boxKeys[r];if(t<=s[u+2]&&e<=s[u+3]&&i>=s[u+0]&&a>=s[u+1]&&(!n||n(d))&&(!h||!mt(c,d.overlapMode))&&(o.push({key:d,x1:s[u],y1:s[u+1],x2:s[u+2],y2:s[u+3]}),h))return !0}}const d=this.circleCells[s];if(null!==d){const s=this.circles;for(const r of d)if(!l.circle[r]){l.circle[r]=!0;const u=3*r,d=this.circleKeys[r];if(this._circleAndRectCollide(s[u],s[u+1],s[u+2],t,e,i,a)&&(!n||n(d))&&(!h||!mt(c,d.overlapMode))){const t=s[u],e=s[u+1],i=s[u+2];if(o.push({key:d,x1:t-i,y1:e-i,x2:t+i,y2:e+i}),h)return !0}}}return !1}_queryCellCircle(t,e,i,a,s,o,r,n){const{circle:l,seenUids:h,overlapMode:c}=r,u=this.boxCells[s];if(null!==u){const t=this.bboxes;for(const e of u)if(!h.box[e]){h.box[e]=!0;const i=4*e,a=this.boxKeys[e];if(this._circleAndRectCollide(l.x,l.y,l.radius,t[i+0],t[i+1],t[i+2],t[i+3])&&(!n||n(a))&&!mt(c,a.overlapMode))return o.push(!0),!0}}const d=this.circleCells[s];if(null!==d){const t=this.circles;for(const e of d)if(!h.circle[e]){h.circle[e]=!0;const i=3*e,a=this.circleKeys[e];if(this._circlesCollide(t[i],t[i+1],t[i+2],l.x,l.y,l.radius)&&(!n||n(a))&&!mt(c,a.overlapMode))return o.push(!0),!0}}}_forEachCell(t,e,i,a,s,o,r,n){const l=this._convertToXCellCoord(t),h=this._convertToYCellCoord(e),c=this._convertToXCellCoord(i),u=this._convertToYCellCoord(a);for(let d=l;d<=c;d++)for(let l=h;l<=u;l++)if(s.call(this,t,e,i,a,this.xCellCount*l+d,o,r,n))return}_convertToXCellCoord(t){return Math.max(0,Math.min(this.xCellCount-1,Math.floor(t*this.xScale)))}_convertToYCellCoord(t){return Math.max(0,Math.min(this.yCellCount-1,Math.floor(t*this.yScale)))}_circlesCollide(t,e,i,a,s,o){const r=a-t,n=s-e,l=i+o;return l*l>r*r+n*n}_circleAndRectCollide(t,e,i,a,s,o,r){const n=(o-a)/2,l=Math.abs(t-(a+n));if(l>n+i)return !1;const h=(r-s)/2,c=Math.abs(e-(s+h));if(c>h+i)return !1;if(l<=n||c<=h)return !0;const u=l-n,d=c-h;return u*u+d*d<=i*i}}function gt(t,i,a,s,o){const r=e.H();return i?(e.K(r,r,[1/o,1/o,1]),a||e.ad(r,r,s.angle)):e.L(r,s.labelPlaneMatrix,t),r}function vt(t,i,a,s,o){if(i){const i=e.ae(t);return e.K(i,i,[o,o,1]),a||e.ad(i,i,-s.angle),i}return s.glCoordMatrix}function xt(t,i,a,s){let o;s?(o=[t,i,s(t,i),1],e.af(o,o,a)):(o=[t,i,0,1],kt(o,o,a));const r=o[3];return {point:new e.P(o[0]/r,o[1]/r),signedDistanceFromCamera:r,isOccluded:!1}}function yt(t,e){return .5+t/e*.5}function bt(t,e){return t.x>=-e[0]&&t.x<=e[0]&&t.y>=-e[1]&&t.y<=e[1]}function wt(t,i,a,s,o,r,n,l,h,c,u,d,_,p,m){const f=s?t.textSizeData:t.iconSizeData,g=e.ag(f,a.transform.zoom),v=[256/a.width*2+1,256/a.height*2+1],x=s?t.text.dynamicLayoutVertexArray:t.icon.dynamicLayoutVertexArray;x.clear();const y=t.lineVertexArray,b=s?t.text.placedSymbolArray:t.icon.placedSymbolArray,w=a.transform.width/a.transform.height;let T=!1;for(let s=0;s<b.length;s++){const I=b.get(s);if(I.hidden||I.writingMode===e.ah.vertical&&!T){Rt(I.numGlyphs,x);continue}T=!1;const E=xt(I.anchorX,I.anchorY,i,m);if(!bt(E.point,v)){Rt(I.numGlyphs,x);continue}const P=yt(a.transform.cameraToCenterDistance,E.signedDistanceFromCamera),C=e.ai(f,g,I),S=n?C/P:C*P,z={getElevation:m,labelPlaneMatrix:o,lineVertexArray:y,pitchWithMap:n,projectionCache:{projections:{},offsets:{},cachedAnchorPoint:void 0,anyProjectionOccluded:!1},projection:c,tileAnchorPoint:new e.P(I.anchorX,I.anchorY),unwrappedTileID:u,width:d,height:_,translation:p},D=Et(z,I,S,!1,l,i,r,t.glyphOffsetArray,x,w,h);T=D.useVertical,(D.notEnoughRoom||T||D.needsFlipping&&Et(z,I,S,!0,l,i,r,t.glyphOffsetArray,x,w,h).notEnoughRoom)&&Rt(I.numGlyphs,x);}s?t.text.dynamicLayoutVertexBuffer.updateData(x):t.icon.dynamicLayoutVertexBuffer.updateData(x);}function Tt(t,e,i,a,s,o,r,n){const l=o.glyphStartIndex+o.numGlyphs,h=o.lineStartIndex,c=o.lineStartIndex+o.lineLength,u=e.getoffsetX(o.glyphStartIndex),d=e.getoffsetX(l-1),_=Mt(t*u,i,a,s,o.segment,h,c,n,r);if(!_)return null;const p=Mt(t*d,i,a,s,o.segment,h,c,n,r);return p?n.projectionCache.anyProjectionOccluded?null:{first:_,last:p}:null}function It(t,i,a,s){return t===e.ah.horizontal&&Math.abs(a.y-i.y)>Math.abs(a.x-i.x)*s?{useVertical:!0}:(t===e.ah.vertical?i.y<a.y:i.x>a.x)?{needsFlipping:!0}:null}function Et(t,i,a,s,o,r,n,l,h,c,u){const d=a/24,_=i.lineOffsetX*d,p=i.lineOffsetY*d;let m;if(i.numGlyphs>1){const e=i.glyphStartIndex+i.numGlyphs,a=i.lineStartIndex,r=i.lineStartIndex+i.lineLength,h=Tt(d,l,_,p,s,i,u,t);if(!h)return {notEnoughRoom:!0};const f=xt(h.first.point.x,h.first.point.y,n,t.getElevation).point,g=xt(h.last.point.x,h.last.point.y,n,t.getElevation).point;if(o&&!s){const t=It(i.writingMode,f,g,c);if(t)return t}m=[h.first];for(let o=i.glyphStartIndex+1;o<e-1;o++)m.push(Mt(d*l.getoffsetX(o),_,p,s,i.segment,a,r,t,u));m.push(h.last);}else {if(o&&!s){const a=xt(t.tileAnchorPoint.x,t.tileAnchorPoint.y,r,t.getElevation).point,s=i.lineStartIndex+i.segment+1,o=new e.P(t.lineVertexArray.getx(s),t.lineVertexArray.gety(s)),n=xt(o.x,o.y,r,t.getElevation),l=n.signedDistanceFromCamera>0?n.point:function(t,e,i,a,s,o){return Pt(t,e,i,1,s,o)}(t.tileAnchorPoint,o,a,0,r,t),h=It(i.writingMode,a,l,c);if(h)return h}const a=Mt(d*l.getoffsetX(i.glyphStartIndex),_,p,s,i.segment,i.lineStartIndex,i.lineStartIndex+i.lineLength,t,u);if(!a||t.projectionCache.anyProjectionOccluded)return {notEnoughRoom:!0};m=[a];}for(const t of m)e.aj(h,t.point,t.angle);return {}}function Pt(t,e,i,a,s,o){const r=t.add(t.sub(e)._unit()),n=void 0!==s?xt(r.x,r.y,s,o.getElevation).point:St(r.x,r.y,o).point,l=i.sub(n);return i.add(l._mult(a/l.mag()))}function Ct(t,i,a){const s=i.projectionCache;if(s.projections[t])return s.projections[t];const o=new e.P(i.lineVertexArray.getx(t),i.lineVertexArray.gety(t)),r=St(o.x,o.y,i);if(r.signedDistanceFromCamera>0)return s.projections[t]=r.point,s.anyProjectionOccluded=s.anyProjectionOccluded||r.isOccluded,r.point;const n=t-a.direction;return function(t,e,i,a,s){return Pt(t,e,i,a,void 0,s)}(0===a.distanceFromAnchor?i.tileAnchorPoint:new e.P(i.lineVertexArray.getx(n),i.lineVertexArray.gety(n)),o,a.previousVertex,a.absOffsetX-a.distanceFromAnchor+1,i)}function St(t,e,i){const a=t+i.translation[0],s=e+i.translation[1];let o;return !i.pitchWithMap&&i.projection.useSpecialProjectionForSymbols?(o=i.projection.projectTileCoordinates(a,s,i.unwrappedTileID,i.getElevation),o.point.x=(.5*o.point.x+.5)*i.width,o.point.y=(.5*-o.point.y+.5)*i.height):(o=xt(a,s,i.labelPlaneMatrix,i.getElevation),o.isOccluded=!1),o}function zt(t,e,i){return t._unit()._perp()._mult(e*i)}function Dt(t,i,a,s,o,r,n,l,h){if(l.projectionCache.offsets[t])return l.projectionCache.offsets[t];const c=a.add(i);if(t+h.direction<s||t+h.direction>=o)return l.projectionCache.offsets[t]=c,c;const u=Ct(t+h.direction,l,h),d=zt(u.sub(a),n,h.direction),_=a.add(d),p=u.add(d);return l.projectionCache.offsets[t]=e.ak(r,c,_,p)||c,l.projectionCache.offsets[t]}function Mt(t,e,i,a,s,o,r,n,l){const h=a?t-e:t+e;let c=h>0?1:-1,u=0;a&&(c*=-1,u=Math.PI),c<0&&(u+=Math.PI);let d,_=c>0?o+s:o+s+1;n.projectionCache.cachedAnchorPoint?d=n.projectionCache.cachedAnchorPoint:(d=St(n.tileAnchorPoint.x,n.tileAnchorPoint.y,n).point,n.projectionCache.cachedAnchorPoint=d);let p,m,f=d,g=d,v=0,x=0;const y=Math.abs(h),b=[];let w;for(;v+x<=y;){if(_+=c,_<o||_>=r)return null;v+=x,g=f,m=p;const t={absOffsetX:y,direction:c,distanceFromAnchor:v,previousVertex:g};if(f=Ct(_,n,t),0===i)b.push(g),w=f.sub(g);else {let e;const a=f.sub(g);e=0===a.mag()?zt(Ct(_+c,n,t).sub(f),i,c):zt(a,i,c),m||(m=g.add(e)),p=Dt(_,e,f,o,r,m,i,n,t),b.push(m),w=p.sub(m);}x=w.mag();}const T=w._mult((y-v)/x)._add(m||g),I=u+Math.atan2(f.y-g.y,f.x-g.x);return b.push(T),{point:T,angle:l?I:0,path:b}}const At=new Float32Array([-1/0,-1/0,0,-1/0,-1/0,0,-1/0,-1/0,0,-1/0,-1/0,0]);function Rt(t,e){for(let i=0;i<t;i++){const t=e.length;e.resize(t+4),e.float32.set(At,3*t);}}function kt(t,e,i){const a=e[0],s=e[1];return t[0]=i[0]*a+i[4]*s+i[12],t[1]=i[1]*a+i[5]*s+i[13],t[3]=i[3]*a+i[7]*s+i[15],t}const Lt=100;class Ft{constructor(t,e,i=new ft(t.width+200,t.height+200,25),a=new ft(t.width+200,t.height+200,25)){this.transform=t,this.mapProjection=e,this.grid=i,this.ignoredGrid=a,this.pitchFactor=Math.cos(t._pitch)*t.cameraToCenterDistance,this.screenRightBoundary=t.width+Lt,this.screenBottomBoundary=t.height+Lt,this.gridRightBoundary=t.width+200,this.gridBottomBoundary=t.height+200,this.perspectiveRatioCutoff=.6;}placeCollisionBox(t,e,i,a,s,o,r,n,l,h,c){const u=t.anchorPointX+n[0],d=t.anchorPointY+n[1],_=this.projectAndGetPerspectiveRatio(a,u,d,s,h),p=i*_.perspectiveRatio;let m;if(o||r)m=this._projectCollisionBox(t,p,a,s,o,r,n,_,h,c);else {const e=_.point.x+(c?c.x*p:0),i=_.point.y+(c?c.y*p:0);m={allPointsOccluded:!1,box:[e+t.x1*p,i+t.y1*p,e+t.x2*p,i+t.y2*p]};}const[f,g,v,x]=m.box;return this.mapProjection.useSpecialProjectionForSymbols&&(o?m.allPointsOccluded:this.mapProjection.isOccluded(u,d,s))||_.perspectiveRatio<this.perspectiveRatioCutoff||!this.isInsideGrid(f,g,v,x)||"always"!==e&&this.grid.hitTest(f,g,v,x,e,l)?{box:[f,g,v,x],placeable:!1,offscreen:!1}:{box:[f,g,v,x],placeable:!0,offscreen:this.isOffscreen(f,g,v,x)}}placeCollisionCircles(t,i,a,s,o,r,n,l,h,c,u,d,_,p,m,f){const g=[],v=new e.P(i.anchorX,i.anchorY),x=this.getPerspectiveRatio(r,v.x,v.y,n,f),y=(u?o/x:o*x)/e.ap,b={getElevation:f,labelPlaneMatrix:l,lineVertexArray:a,pitchWithMap:u,projectionCache:{projections:{},offsets:{},cachedAnchorPoint:void 0,anyProjectionOccluded:!1},projection:this.mapProjection,tileAnchorPoint:v,unwrappedTileID:n,width:this.transform.width,height:this.transform.height,translation:m},w=Tt(y,s,i.lineOffsetX*y,i.lineOffsetY*y,!1,i,!1,b);let T=!1,I=!1,E=!0;if(w){const i=.5*_*x+p,a=new e.P(-100,-100),s=new e.P(this.screenRightBoundary,this.screenBottomBoundary),o=new pt,r=w.first,n=w.last;let l=[];for(let t=r.path.length-1;t>=1;t--)l.push(r.path[t]);for(let t=1;t<n.path.length;t++)l.push(n.path[t]);const u=2.5*i;if(h){const t=this.projectPathToScreenSpace(l,b,h);l=t.some((t=>t.signedDistanceFromCamera<=0))?[]:t.map((t=>t.point));}let m=[];if(l.length>0){const t=l[0].clone(),i=l[0].clone();for(let e=1;e<l.length;e++)t.x=Math.min(t.x,l[e].x),t.y=Math.min(t.y,l[e].y),i.x=Math.max(i.x,l[e].x),i.y=Math.max(i.y,l[e].y);m=t.x>=a.x&&i.x<=s.x&&t.y>=a.y&&i.y<=s.y?[l]:i.x<a.x||t.x>s.x||i.y<a.y||t.y>s.y?[]:e.al([l],a.x,a.y,s.x,s.y);}for(const e of m){o.reset(e,.25*i);let a=0;a=o.length<=.5*i?1:Math.ceil(o.paddedLength/u)+1;for(let e=0;e<a;e++){const s=e/Math.max(a-1,1),r=o.lerp(s),n=r.x+Lt,l=r.y+Lt;g.push(n,l,i,0);const h=n-i,u=l-i,_=n+i,p=l+i;if(E=E&&this.isOffscreen(h,u,_,p),I=I||this.isInsideGrid(h,u,_,p),"always"!==t&&this.grid.hitTestCircle(n,l,i,t,d)&&(T=!0,!c))return {circles:[],offscreen:!1,collisionDetected:T}}}}return {circles:!c&&T||!I||x<this.perspectiveRatioCutoff?[]:g,offscreen:E,collisionDetected:T}}projectPathToScreenSpace(t,e,i){return t.map((t=>xt(t.x,t.y,i,e.getElevation)))}queryRenderedSymbols(t){if(0===t.length||0===this.grid.keysLength()&&0===this.ignoredGrid.keysLength())return {};const i=[];let a=1/0,s=1/0,o=-1/0,r=-1/0;for(const n of t){const t=new e.P(n.x+Lt,n.y+Lt);a=Math.min(a,t.x),s=Math.min(s,t.y),o=Math.max(o,t.x),r=Math.max(r,t.y),i.push(t);}const n=this.grid.query(a,s,o,r).concat(this.ignoredGrid.query(a,s,o,r)),l={},h={};for(const t of n){const a=t.key;if(void 0===l[a.bucketInstanceId]&&(l[a.bucketInstanceId]={}),l[a.bucketInstanceId][a.featureIndex])continue;const s=[new e.P(t.x1,t.y1),new e.P(t.x2,t.y1),new e.P(t.x2,t.y2),new e.P(t.x1,t.y2)];e.am(i,s)&&(l[a.bucketInstanceId][a.featureIndex]=!0,void 0===h[a.bucketInstanceId]&&(h[a.bucketInstanceId]=[]),h[a.bucketInstanceId].push(a.featureIndex));}return h}insertCollisionBox(t,e,i,a,s,o){(i?this.ignoredGrid:this.grid).insert({bucketInstanceId:a,featureIndex:s,collisionGroupID:o,overlapMode:e},t[0],t[1],t[2],t[3]);}insertCollisionCircles(t,e,i,a,s,o){const r=i?this.ignoredGrid:this.grid,n={bucketInstanceId:a,featureIndex:s,collisionGroupID:o,overlapMode:e};for(let e=0;e<t.length;e+=4)r.insertCircle(n,t[e],t[e+1],t[e+2]);}projectAndGetPerspectiveRatio(t,i,a,s,o){let r;o?(r=[i,a,o(i,a),1],e.af(r,r,t)):(r=[i,a,0,1],kt(r,r,t));const n=r[3];return {point:new e.P((r[0]/n+1)/2*this.transform.width+Lt,(-r[1]/n+1)/2*this.transform.height+Lt),perspectiveRatio:.5+this.transform.cameraToCenterDistance/n*.5,isOccluded:!1,signedDistanceFromCamera:n}}getPerspectiveRatio(t,e,i,a,s){const o=this.mapProjection.useSpecialProjectionForSymbols?this.mapProjection.projectTileCoordinates(e,i,a,s):xt(e,i,t,s);return .5+this.transform.cameraToCenterDistance/o.signedDistanceFromCamera*.5}isOffscreen(t,e,i,a){return i<Lt||t>=this.screenRightBoundary||a<Lt||e>this.screenBottomBoundary}isInsideGrid(t,e,i,a){return i>=0&&t<this.gridRightBoundary&&a>=0&&e<this.gridBottomBoundary}getViewportMatrix(){const t=e.an([]);return e.J(t,t,[-100,-100,0]),t}_projectCollisionBox(t,i,a,s,o,r,n,l,h,c){let u=new e.P(1,0),d=new e.P(0,1);const _=new e.P(t.anchorPointX+n[0],t.anchorPointY+n[1]);if(r&&!o){const t=this.projectAndGetPerspectiveRatio(a,_.x+1,_.y,s,h).point.sub(l.point).unit(),i=Math.atan(t.y/t.x)+(t.x<0?Math.PI:0),o=Math.sin(i),r=Math.cos(i);u=new e.P(r,o),d=new e.P(-o,r);}else if(!r&&o){const t=-this.transform.angle,i=Math.sin(t),a=Math.cos(t);u=new e.P(a,i),d=new e.P(-i,a);}let p=l.point,m=i;if(o){p=_;const t=this.transform.zoom-Math.floor(this.transform.zoom);m=Math.pow(2,-t),m*=this.mapProjection.getPitchedTextCorrection(this.transform,_,s),c||(m*=e.ac(.5+l.signedDistanceFromCamera/this.transform.cameraToCenterDistance*.5,0,4));}c&&(p=p.add(u.mult(c.x*m)).add(d.mult(c.y*m)));const f=t.x1*m,g=t.x2*m,v=(f+g)/2,x=t.y1*m,y=t.y2*m,b=(x+y)/2,w=[{offsetX:f,offsetY:x},{offsetX:v,offsetY:x},{offsetX:g,offsetY:x},{offsetX:g,offsetY:b},{offsetX:g,offsetY:y},{offsetX:v,offsetY:y},{offsetX:f,offsetY:y},{offsetX:f,offsetY:b}];let T=[];for(const{offsetX:t,offsetY:i}of w)T.push(new e.P(p.x+u.x*t+d.x*i,p.y+u.y*t+d.y*i));let I=!1;if(o){const t=T.map((t=>this.projectAndGetPerspectiveRatio(a,t.x,t.y,s,h)));I=t.some((t=>!t.isOccluded)),T=t.map((t=>t.point));}else I=!0;return {box:e.ao(T),allPointsOccluded:!I}}}function Bt(t,i,a){return i*(e.X/(t.tileSize*Math.pow(2,a-t.tileID.overscaledZ)))}class Ot{constructor(t,e,i,a){this.opacity=t?Math.max(0,Math.min(1,t.opacity+(t.placed?e:-e))):a&&i?1:0,this.placed=i;}isHidden(){return 0===this.opacity&&!this.placed}}class Nt{constructor(t,e,i,a,s){this.text=new Ot(t?t.text:null,e,i,s),this.icon=new Ot(t?t.icon:null,e,a,s);}isHidden(){return this.text.isHidden()&&this.icon.isHidden()}}class Ut{constructor(t,e,i){this.text=t,this.icon=e,this.skipFade=i;}}class jt{constructor(){this.invProjMatrix=e.H(),this.viewportMatrix=e.H(),this.circles=[];}}class Zt{constructor(t,e,i,a,s){this.bucketInstanceId=t,this.featureIndex=e,this.sourceLayerIndex=i,this.bucketIndex=a,this.tileID=s;}}class qt{constructor(t){this.crossSourceCollisions=t,this.maxGroupID=0,this.collisionGroups={};}get(t){if(this.crossSourceCollisions)return {ID:0,predicate:null};if(!this.collisionGroups[t]){const e=++this.maxGroupID;this.collisionGroups[t]={ID:e,predicate:t=>t.collisionGroupID===e};}return this.collisionGroups[t]}}function Vt(t,i,a,s,o){const{horizontalAlign:r,verticalAlign:n}=e.au(t);return new e.P(-(r-.5)*i+s[0]*o,-(n-.5)*a+s[1]*o)}class Gt{constructor(t,e,i,a,s,o){this.transform=t.clone(),this.terrain=i,this.collisionIndex=new Ft(this.transform,e),this.placements={},this.opacities={},this.variableOffsets={},this.stale=!1,this.commitTime=0,this.fadeDuration=a,this.retainedQueryData={},this.collisionGroups=new qt(s),this.collisionCircleArrays={},this.collisionBoxArrays=new Map,this.prevPlacement=o,o&&(o.prevPlacement=void 0),this.placedOrientations={};}_getTerrainElevationFunc(t){const e=this.terrain;return e?(i,a)=>e.getElevation(t,i,a):null}getBucketParts(t,i,a,s){const o=a.getBucket(i),r=a.latestFeatureIndex;if(!o||!r||i.id!==o.layerIds[0])return;const n=a.collisionBoxArray,l=o.layers[0].layout,h=o.layers[0].paint,c=Math.pow(2,this.transform.zoom-a.tileID.overscaledZ),u=a.tileSize/e.X,d=a.tileID.toUnwrapped(),_=this.transform.calculatePosMatrix(d),p="map"===l.get("text-pitch-alignment"),m="map"===l.get("text-rotation-alignment"),f=Bt(a,1,this.transform.zoom),g=this.collisionIndex.mapProjection.translatePosition(this.transform,a,h.get("text-translate"),h.get("text-translate-anchor")),v=this.collisionIndex.mapProjection.translatePosition(this.transform,a,h.get("icon-translate"),h.get("icon-translate-anchor")),x=gt(_,p,m,this.transform,f);let y=null;if(p){const t=vt(_,p,m,this.transform,f);y=e.L([],this.transform.labelPlaneMatrix,t);}this.retainedQueryData[o.bucketInstanceId]=new Zt(o.bucketInstanceId,r,o.sourceLayerIndex,o.index,a.tileID);const b={bucket:o,layout:l,translationText:g,translationIcon:v,posMatrix:_,unwrappedTileID:d,textLabelPlaneMatrix:x,labelToScreenMatrix:y,scale:c,textPixelRatio:u,holdingForFade:a.holdingForFade(),collisionBoxArray:n,partiallyEvaluatedTextSize:e.ag(o.textSizeData,this.transform.zoom),collisionGroup:this.collisionGroups.get(o.sourceID)};if(s)for(const e of o.sortKeyRanges){const{sortKey:i,symbolInstanceStart:a,symbolInstanceEnd:s}=e;t.push({sortKey:i,symbolInstanceStart:a,symbolInstanceEnd:s,parameters:b});}else t.push({symbolInstanceStart:0,symbolInstanceEnd:o.symbolInstances.length,parameters:b});}attemptAnchorPlacement(t,i,a,s,o,r,n,l,h,c,u,d,_,p,m,f,g,v,x){const y=e.aq[t.textAnchor],b=[t.textOffset0,t.textOffset1],w=Vt(y,a,s,b,o),T=this.collisionIndex.placeCollisionBox(i,d,l,h,c,n,r,f,u.predicate,x,w);if((!v||this.collisionIndex.placeCollisionBox(v,d,l,h,c,n,r,g,u.predicate,x,w).placeable)&&T.placeable){let t;if(this.prevPlacement&&this.prevPlacement.variableOffsets[_.crossTileID]&&this.prevPlacement.placements[_.crossTileID]&&this.prevPlacement.placements[_.crossTileID].text&&(t=this.prevPlacement.variableOffsets[_.crossTileID].anchor),0===_.crossTileID)throw new Error("symbolInstance.crossTileID can't be 0");return this.variableOffsets[_.crossTileID]={textOffset:b,width:a,height:s,anchor:y,textBoxScale:o,prevAnchor:t},this.markUsedJustification(p,y,_,m),p.allowVerticalPlacement&&(this.markUsedOrientation(p,m,_),this.placedOrientations[_.crossTileID]=m),{shift:w,placedGlyphBoxes:T}}}placeLayerBucketPart(t,i,a){const{bucket:s,layout:o,translationText:r,translationIcon:n,posMatrix:l,unwrappedTileID:h,textLabelPlaneMatrix:c,labelToScreenMatrix:u,textPixelRatio:d,holdingForFade:_,collisionBoxArray:p,partiallyEvaluatedTextSize:m,collisionGroup:f}=t.parameters,g=o.get("text-optional"),v=o.get("icon-optional"),x=e.ar(o,"text-overlap","text-allow-overlap"),y="always"===x,b=e.ar(o,"icon-overlap","icon-allow-overlap"),w="always"===b,T="map"===o.get("text-rotation-alignment"),I="map"===o.get("text-pitch-alignment"),E="none"!==o.get("icon-text-fit"),P="viewport-y"===o.get("symbol-z-order"),C=y&&(w||!s.hasIconData()||v),S=w&&(y||!s.hasTextData()||g);!s.collisionArrays&&p&&s.deserializeCollisionBoxes(p);const z=this._getTerrainElevationFunc(this.retainedQueryData[s.bucketInstanceId].tileID),D=(t,p,w)=>{var P,D;if(i[t.crossTileID])return;if(_)return void(this.placements[t.crossTileID]=new Ut(!1,!1,!1));let M=!1,A=!1,R=!0,k=null,L={box:null,placeable:!1,offscreen:null},F={box:null,placeable:!1,offscreen:null},B=null,O=null,N=null,U=0,j=0,Z=0;p.textFeatureIndex?U=p.textFeatureIndex:t.useRuntimeCollisionCircles&&(U=t.featureIndex),p.verticalTextFeatureIndex&&(j=p.verticalTextFeatureIndex);const q=p.textBox;if(q){const i=i=>{let a=e.ah.horizontal;if(s.allowVerticalPlacement&&!i&&this.prevPlacement){const e=this.prevPlacement.placedOrientations[t.crossTileID];e&&(this.placedOrientations[t.crossTileID]=e,a=e,this.markUsedOrientation(s,a,t));}return a},o=(i,a)=>{if(s.allowVerticalPlacement&&t.numVerticalGlyphVertices>0&&p.verticalTextBox){for(const t of s.writingModes)if(t===e.ah.vertical?(L=a(),F=L):L=i(),L&&L.placeable)break}else L=i();},c=t.textAnchorOffsetStartIndex,u=t.textAnchorOffsetEndIndex;if(u===c){const a=(e,i)=>{const a=this.collisionIndex.placeCollisionBox(e,x,d,l,h,I,T,r,f.predicate,z);return a&&a.placeable&&(this.markUsedOrientation(s,i,t),this.placedOrientations[t.crossTileID]=i),a};o((()=>a(q,e.ah.horizontal)),(()=>{const i=p.verticalTextBox;return s.allowVerticalPlacement&&t.numVerticalGlyphVertices>0&&i?a(i,e.ah.vertical):{box:null,offscreen:null}})),i(L&&L.placeable);}else {let _=e.aq[null===(D=null===(P=this.prevPlacement)||void 0===P?void 0:P.variableOffsets[t.crossTileID])||void 0===D?void 0:D.anchor];const m=(i,o,p)=>{const m=i.x2-i.x1,g=i.y2-i.y1,v=t.textBoxScale,y=E&&"never"===b?o:null;let w=null,P="never"===x?1:2,C="never";_&&P++;for(let e=0;e<P;e++){for(let e=c;e<u;e++){const a=s.textAnchorOffsets.get(e);if(_&&a.textAnchor!==_)continue;const o=this.attemptAnchorPlacement(a,i,m,g,v,T,I,d,l,h,f,C,t,s,p,r,n,y,z);if(o&&(w=o.placedGlyphBoxes,w&&w.placeable))return M=!0,k=o.shift,w}_?_=null:C=x;}return a&&!w&&(w={box:this.collisionIndex.placeCollisionBox(q,"always",d,l,h,I,T,r,f.predicate,z,new e.P(0,0)).box,offscreen:!1,placeable:!1}),w};o((()=>m(q,p.iconBox,e.ah.horizontal)),(()=>{const i=p.verticalTextBox;return s.allowVerticalPlacement&&(!L||!L.placeable)&&t.numVerticalGlyphVertices>0&&i?m(i,p.verticalIconBox,e.ah.vertical):{box:null,occluded:!0,offscreen:null}})),L&&(M=L.placeable,R=L.offscreen);const g=i(L&&L.placeable);if(!M&&this.prevPlacement){const e=this.prevPlacement.variableOffsets[t.crossTileID];e&&(this.variableOffsets[t.crossTileID]=e,this.markUsedJustification(s,e.anchor,t,g));}}}if(B=L,M=B&&B.placeable,R=B&&B.offscreen,t.useRuntimeCollisionCircles){const i=s.text.placedSymbolArray.get(t.centerJustifiedTextSymbolIndex),n=e.ai(s.textSizeData,m,i),d=o.get("text-padding");O=this.collisionIndex.placeCollisionCircles(x,i,s.lineVertexArray,s.glyphOffsetArray,n,l,h,c,u,a,I,f.predicate,t.collisionCircleDiameter,d,r,z),O.circles.length&&O.collisionDetected&&!a&&e.w("Collisions detected, but collision boxes are not shown"),M=y||O.circles.length>0&&!O.collisionDetected,R=R&&O.offscreen;}if(p.iconFeatureIndex&&(Z=p.iconFeatureIndex),p.iconBox){const t=t=>this.collisionIndex.placeCollisionBox(t,b,d,l,h,I,T,n,f.predicate,z,E&&k?k:void 0);F&&F.placeable&&p.verticalIconBox?(N=t(p.verticalIconBox),A=N.placeable):(N=t(p.iconBox),A=N.placeable),R=R&&N.offscreen;}const V=g||0===t.numHorizontalGlyphVertices&&0===t.numVerticalGlyphVertices,G=v||0===t.numIconVertices;V||G?G?V||(A=A&&M):M=A&&M:A=M=A&&M;const H=A&&N.placeable;if(M&&B.placeable&&this.collisionIndex.insertCollisionBox(B.box,x,o.get("text-ignore-placement"),s.bucketInstanceId,F&&F.placeable&&j?j:U,f.ID),H&&this.collisionIndex.insertCollisionBox(N.box,b,o.get("icon-ignore-placement"),s.bucketInstanceId,Z,f.ID),O&&M&&this.collisionIndex.insertCollisionCircles(O.circles,x,o.get("text-ignore-placement"),s.bucketInstanceId,U,f.ID),a&&this.storeCollisionData(s.bucketInstanceId,w,p,B,N,O),0===t.crossTileID)throw new Error("symbolInstance.crossTileID can't be 0");if(0===s.bucketInstanceId)throw new Error("bucket.bucketInstanceId can't be 0");this.placements[t.crossTileID]=new Ut(M||C,A||S,R||s.justReloaded),i[t.crossTileID]=!0;};if(P){if(0!==t.symbolInstanceStart)throw new Error("bucket.bucketInstanceId should be 0");const e=s.getSortedSymbolIndexes(this.transform.angle);for(let t=e.length-1;t>=0;--t){const i=e[t];D(s.symbolInstances.get(i),s.collisionArrays[i],i);}}else for(let e=t.symbolInstanceStart;e<t.symbolInstanceEnd;e++)D(s.symbolInstances.get(e),s.collisionArrays[e],e);if(a&&s.bucketInstanceId in this.collisionCircleArrays){const t=this.collisionCircleArrays[s.bucketInstanceId];e.as(t.invProjMatrix,l),t.viewportMatrix=this.collisionIndex.getViewportMatrix();}s.justReloaded=!1;}storeCollisionData(t,e,i,a,s,o){if(i.textBox||i.iconBox){let o,r;this.collisionBoxArrays.has(t)?o=this.collisionBoxArrays.get(t):(o=new Map,this.collisionBoxArrays.set(t,o)),o.has(e)?r=o.get(e):(r={text:null,icon:null},o.set(e,r)),i.textBox&&(r.text=a.box),i.iconBox&&(r.icon=s.box);}if(o){let e=this.collisionCircleArrays[t];void 0===e&&(e=this.collisionCircleArrays[t]=new jt);for(let t=0;t<o.circles.length;t+=4)e.circles.push(o.circles[t+0]),e.circles.push(o.circles[t+1]),e.circles.push(o.circles[t+2]),e.circles.push(o.collisionDetected?1:0);}}markUsedJustification(t,i,a,s){let o;o=s===e.ah.vertical?a.verticalPlacedTextSymbolIndex:{left:a.leftJustifiedTextSymbolIndex,center:a.centerJustifiedTextSymbolIndex,right:a.rightJustifiedTextSymbolIndex}[e.at(i)];const r=[a.leftJustifiedTextSymbolIndex,a.centerJustifiedTextSymbolIndex,a.rightJustifiedTextSymbolIndex,a.verticalPlacedTextSymbolIndex];for(const e of r)e>=0&&(t.text.placedSymbolArray.get(e).crossTileID=o>=0&&e!==o?0:a.crossTileID);}markUsedOrientation(t,i,a){const s=i===e.ah.horizontal||i===e.ah.horizontalOnly?i:0,o=i===e.ah.vertical?i:0,r=[a.leftJustifiedTextSymbolIndex,a.centerJustifiedTextSymbolIndex,a.rightJustifiedTextSymbolIndex];for(const e of r)t.text.placedSymbolArray.get(e).placedOrientation=s;a.verticalPlacedTextSymbolIndex&&(t.text.placedSymbolArray.get(a.verticalPlacedTextSymbolIndex).placedOrientation=o);}commit(t){this.commitTime=t,this.zoomAtLastRecencyCheck=this.transform.zoom;const e=this.prevPlacement;let i=!1;this.prevZoomAdjustment=e?e.zoomAdjustment(this.transform.zoom):0;const a=e?e.symbolFadeChange(t):1,s=e?e.opacities:{},o=e?e.variableOffsets:{},r=e?e.placedOrientations:{};for(const t in this.placements){const e=this.placements[t],o=s[t];o?(this.opacities[t]=new Nt(o,a,e.text,e.icon),i=i||e.text!==o.text.placed||e.icon!==o.icon.placed):(this.opacities[t]=new Nt(null,a,e.text,e.icon,e.skipFade),i=i||e.text||e.icon);}for(const t in s){const e=s[t];if(!this.opacities[t]){const s=new Nt(e,a,!1,!1);s.isHidden()||(this.opacities[t]=s,i=i||e.text.placed||e.icon.placed);}}for(const t in o)this.variableOffsets[t]||!this.opacities[t]||this.opacities[t].isHidden()||(this.variableOffsets[t]=o[t]);for(const t in r)this.placedOrientations[t]||!this.opacities[t]||this.opacities[t].isHidden()||(this.placedOrientations[t]=r[t]);if(e&&void 0===e.lastPlacementChangeTime)throw new Error("Last placement time for previous placement is not defined");i?this.lastPlacementChangeTime=t:"number"!=typeof this.lastPlacementChangeTime&&(this.lastPlacementChangeTime=e?e.lastPlacementChangeTime:t);}updateLayerOpacities(t,e){const i={};for(const a of e){const e=a.getBucket(t);e&&a.latestFeatureIndex&&t.id===e.layerIds[0]&&this.updateBucketOpacities(e,a.tileID,i,a.collisionBoxArray);}}updateBucketOpacities(t,i,a,s){t.hasTextData()&&(t.text.opacityVertexArray.clear(),t.text.hasVisibleVertices=!1),t.hasIconData()&&(t.icon.opacityVertexArray.clear(),t.icon.hasVisibleVertices=!1),t.hasIconCollisionBoxData()&&t.iconCollisionBox.collisionVertexArray.clear(),t.hasTextCollisionBoxData()&&t.textCollisionBox.collisionVertexArray.clear();const o=t.layers[0],r=o.layout,n=new Nt(null,0,!1,!1,!0),l=r.get("text-allow-overlap"),h=r.get("icon-allow-overlap"),c=o._unevaluatedLayout.hasValue("text-variable-anchor")||o._unevaluatedLayout.hasValue("text-variable-anchor-offset"),u="map"===r.get("text-rotation-alignment"),d="map"===r.get("text-pitch-alignment"),_="none"!==r.get("icon-text-fit"),p=new Nt(null,0,l&&(h||!t.hasIconData()||r.get("icon-optional")),h&&(l||!t.hasTextData()||r.get("text-optional")),!0);!t.collisionArrays&&s&&(t.hasIconCollisionBoxData()||t.hasTextCollisionBoxData())&&t.deserializeCollisionBoxes(s);const m=(t,e,i)=>{for(let a=0;a<e/4;a++)t.opacityVertexArray.emplaceBack(i);t.hasVisibleVertices=t.hasVisibleVertices||i!==ee;},f=this.collisionBoxArrays.get(t.bucketInstanceId);for(let i=0;i<t.symbolInstances.length;i++){const s=t.symbolInstances.get(i),{numHorizontalGlyphVertices:o,numVerticalGlyphVertices:r,crossTileID:l}=s;let h=this.opacities[l];a[l]?h=n:h||(h=p,this.opacities[l]=h),a[l]=!0;const g=s.numIconVertices>0,v=this.placedOrientations[s.crossTileID],x=v===e.ah.vertical,y=v===e.ah.horizontal||v===e.ah.horizontalOnly;if(o>0||r>0){const e=te(h.text);m(t.text,o,x?ee:e),m(t.text,r,y?ee:e);const i=h.text.isHidden();[s.rightJustifiedTextSymbolIndex,s.centerJustifiedTextSymbolIndex,s.leftJustifiedTextSymbolIndex].forEach((e=>{e>=0&&(t.text.placedSymbolArray.get(e).hidden=i||x?1:0);})),s.verticalPlacedTextSymbolIndex>=0&&(t.text.placedSymbolArray.get(s.verticalPlacedTextSymbolIndex).hidden=i||y?1:0);const a=this.variableOffsets[s.crossTileID];a&&this.markUsedJustification(t,a.anchor,s,v);const n=this.placedOrientations[s.crossTileID];n&&(this.markUsedJustification(t,"left",s,n),this.markUsedOrientation(t,n,s));}if(g){const e=te(h.icon),i=!(_&&s.verticalPlacedIconSymbolIndex&&x);s.placedIconSymbolIndex>=0&&(m(t.icon,s.numIconVertices,i?e:ee),t.icon.placedSymbolArray.get(s.placedIconSymbolIndex).hidden=h.icon.isHidden()),s.verticalPlacedIconSymbolIndex>=0&&(m(t.icon,s.numVerticalIconVertices,i?ee:e),t.icon.placedSymbolArray.get(s.verticalPlacedIconSymbolIndex).hidden=h.icon.isHidden());}const b=f&&f.has(i)?f.get(i):{text:null,icon:null};if(t.hasIconCollisionBoxData()||t.hasTextCollisionBoxData()){const a=t.collisionArrays[i];if(a){let i=new e.P(0,0);if(a.textBox||a.verticalTextBox){let e=!0;if(c){const t=this.variableOffsets[l];t?(i=Vt(t.anchor,t.width,t.height,t.textOffset,t.textBoxScale),u&&i._rotate(d?this.transform.angle:-this.transform.angle)):e=!1;}if(a.textBox||a.verticalTextBox){let s;a.textBox&&(s=x),a.verticalTextBox&&(s=y),Ht(t.textCollisionBox.collisionVertexArray,h.text.placed,!e||s,b.text,i.x,i.y);}}if(a.iconBox||a.verticalIconBox){const e=Boolean(!y&&a.verticalIconBox);let s;a.iconBox&&(s=e),a.verticalIconBox&&(s=!e),Ht(t.iconCollisionBox.collisionVertexArray,h.icon.placed,s,b.icon,_?i.x:0,_?i.y:0);}}}}if(t.sortFeatures(this.transform.angle),this.retainedQueryData[t.bucketInstanceId]&&(this.retainedQueryData[t.bucketInstanceId].featureSortOrder=t.featureSortOrder),t.hasTextData()&&t.text.opacityVertexBuffer&&t.text.opacityVertexBuffer.updateData(t.text.opacityVertexArray),t.hasIconData()&&t.icon.opacityVertexBuffer&&t.icon.opacityVertexBuffer.updateData(t.icon.opacityVertexArray),t.hasIconCollisionBoxData()&&t.iconCollisionBox.collisionVertexBuffer&&t.iconCollisionBox.collisionVertexBuffer.updateData(t.iconCollisionBox.collisionVertexArray),t.hasTextCollisionBoxData()&&t.textCollisionBox.collisionVertexBuffer&&t.textCollisionBox.collisionVertexBuffer.updateData(t.textCollisionBox.collisionVertexArray),t.text.opacityVertexArray.length!==t.text.layoutVertexArray.length/4)throw new Error(`bucket.text.opacityVertexArray.length (= ${t.text.opacityVertexArray.length}) !== bucket.text.layoutVertexArray.length (= ${t.text.layoutVertexArray.length}) / 4`);if(t.icon.opacityVertexArray.length!==t.icon.layoutVertexArray.length/4)throw new Error(`bucket.icon.opacityVertexArray.length (= ${t.icon.opacityVertexArray.length}) !== bucket.icon.layoutVertexArray.length (= ${t.icon.layoutVertexArray.length}) / 4`);if(t.bucketInstanceId in this.collisionCircleArrays){const e=this.collisionCircleArrays[t.bucketInstanceId];t.placementInvProjMatrix=e.invProjMatrix,t.placementViewportMatrix=e.viewportMatrix,t.collisionCircleArray=e.circles,delete this.collisionCircleArrays[t.bucketInstanceId];}}symbolFadeChange(t){return 0===this.fadeDuration?1:(t-this.commitTime)/this.fadeDuration+this.prevZoomAdjustment}zoomAdjustment(t){return Math.max(0,(this.transform.zoom-t)/1.5)}hasTransitions(t){return this.stale||t-this.lastPlacementChangeTime<this.fadeDuration}stillRecent(t,e){const i=this.zoomAtLastRecencyCheck===e?1-this.zoomAdjustment(e):1;return this.zoomAtLastRecencyCheck=e,this.commitTime+this.fadeDuration*i>t}setStale(){this.stale=!0;}}function Ht(t,e,i,a,s,o){a&&0!==a.length||(a=[0,0,0,0]);const r=a[0]-Lt,n=a[1]-Lt,l=a[2]-Lt,h=a[3]-Lt;t.emplaceBack(e?1:0,i?1:0,s||0,o||0,r,n),t.emplaceBack(e?1:0,i?1:0,s||0,o||0,l,n),t.emplaceBack(e?1:0,i?1:0,s||0,o||0,l,h),t.emplaceBack(e?1:0,i?1:0,s||0,o||0,r,h);}const Wt=Math.pow(2,25),$t=Math.pow(2,24),Xt=Math.pow(2,17),Kt=Math.pow(2,16),Jt=Math.pow(2,9),Yt=Math.pow(2,8),Qt=Math.pow(2,1);function te(t){if(0===t.opacity&&!t.placed)return 0;if(1===t.opacity&&t.placed)return 4294967295;const e=t.placed?1:0,i=Math.floor(127*t.opacity);return i*Wt+e*$t+i*Xt+e*Kt+i*Jt+e*Yt+i*Qt+e}const ee=0;function ie(){return {isOccluded:(t,e,i)=>!1,getPitchedTextCorrection:(t,e,i)=>1,get useSpecialProjectionForSymbols(){return !1},projectTileCoordinates(t,e,i,a){throw new Error("Not implemented.")},translatePosition:(t,e,i,a)=>function(t,e,i,a,s=!1){if(!i[0]&&!i[1])return [0,0];const o=s?"map"===a?t.angle:0:"viewport"===a?-t.angle:0;if(o){const t=Math.sin(o),e=Math.cos(o);i=[i[0]*e-i[1]*t,i[0]*t+i[1]*e];}return [s?i[0]:Bt(e,i[0],t.zoom),s?i[1]:Bt(e,i[1],t.zoom)]}(t,e,i,a),getCircleRadiusCorrection:t=>1}}class ae{constructor(t){this._sortAcrossTiles="viewport-y"!==t.layout.get("symbol-z-order")&&!t.layout.get("symbol-sort-key").isConstant(),this._currentTileIndex=0,this._currentPartIndex=0,this._seenCrossTileIDs={},this._bucketParts=[];}continuePlacement(t,e,i,a,s){const o=this._bucketParts;for(;this._currentTileIndex<t.length;)if(e.getBucketParts(o,a,t[this._currentTileIndex],this._sortAcrossTiles),this._currentTileIndex++,s())return !0;for(this._sortAcrossTiles&&(this._sortAcrossTiles=!1,o.sort(((t,e)=>t.sortKey-e.sortKey)));this._currentPartIndex<o.length;)if(e.placeLayerBucketPart(o[this._currentPartIndex],this._seenCrossTileIDs,i),this._currentPartIndex++,s())return !0;return !1}}class se{constructor(t,e,i,a,s,o,r,n){this.placement=new Gt(t,ie(),e,o,r,n),this._currentPlacementIndex=i.length-1,this._forceFullPlacement=a,this._showCollisionBoxes=s,this._done=!1;}isDone(){return this._done}continuePlacement(t,e,i){const a=o.now(),s=()=>!this._forceFullPlacement&&o.now()-a>2;for(;this._currentPlacementIndex>=0;){const a=e[t[this._currentPlacementIndex]],o=this.placement.collisionIndex.transform.zoom;if("symbol"===a.type&&(!a.minzoom||a.minzoom<=o)&&(!a.maxzoom||a.maxzoom>o)){if(this._inProgressLayer||(this._inProgressLayer=new ae(a)),this._inProgressLayer.continuePlacement(i[a.source],this.placement,this._showCollisionBoxes,a,s))return;delete this._inProgressLayer;}this._currentPlacementIndex--;}this._done=!0;}commit(t){return this.placement.commit(t),this.placement}}const oe=512/e.X/2;class re{constructor(t,i,a){this.tileID=t,this.bucketInstanceId=a,this._symbolsByKey={};const s=new Map;for(let t=0;t<i.length;t++){const e=i.get(t),a=e.key,o=s.get(a);o?o.push(e):s.set(a,[e]);}for(const[t,i]of s){const a={positions:i.map((t=>({x:Math.floor(t.anchorX*oe),y:Math.floor(t.anchorY*oe)}))),crossTileIDs:i.map((t=>t.crossTileID))};if(a.positions.length>128){const t=new e.av(a.positions.length,16,Uint16Array);for(const{x:e,y:i}of a.positions)t.add(e,i);t.finish(),delete a.positions,a.index=t;}this._symbolsByKey[t]=a;}}getScaledCoordinates(t,i){const{x:a,y:s,z:o}=this.tileID.canonical,{x:r,y:n,z:l}=i.canonical,h=oe/Math.pow(2,l-o),c=(n*e.X+t.anchorY)*h,u=s*e.X*oe;return {x:Math.floor((r*e.X+t.anchorX)*h-a*e.X*oe),y:Math.floor(c-u)}}findMatches(t,e,i){const a=this.tileID.canonical.z<e.canonical.z?1:Math.pow(2,this.tileID.canonical.z-e.canonical.z);for(let s=0;s<t.length;s++){const o=t.get(s);if(o.crossTileID)continue;const r=this._symbolsByKey[o.key];if(!r)continue;const n=this.getScaledCoordinates(o,e);if(r.index){const t=r.index.range(n.x-a,n.y-a,n.x+a,n.y+a).sort();for(const e of t){const t=r.crossTileIDs[e];if(!i[t]){i[t]=!0,o.crossTileID=t;break}}}else if(r.positions)for(let t=0;t<r.positions.length;t++){const e=r.positions[t],s=r.crossTileIDs[t];if(Math.abs(e.x-n.x)<=a&&Math.abs(e.y-n.y)<=a&&!i[s]){i[s]=!0,o.crossTileID=s;break}}}}getCrossTileIDsLists(){return Object.values(this._symbolsByKey).map((({crossTileIDs:t})=>t))}}class ne{constructor(){this.maxCrossTileID=0;}generate(){return ++this.maxCrossTileID}}class le{constructor(){this.indexes={},this.usedCrossTileIDs={},this.lng=0;}handleWrapJump(t){const e=Math.round((t-this.lng)/360);if(0!==e)for(const t in this.indexes){const i=this.indexes[t],a={};for(const t in i){const s=i[t];s.tileID=s.tileID.unwrapTo(s.tileID.wrap+e),a[s.tileID.key]=s;}this.indexes[t]=a;}this.lng=t;}addBucket(t,e,i){if(this.indexes[t.overscaledZ]&&this.indexes[t.overscaledZ][t.key]){if(this.indexes[t.overscaledZ][t.key].bucketInstanceId===e.bucketInstanceId)return !1;this.removeBucketCrossTileIDs(t.overscaledZ,this.indexes[t.overscaledZ][t.key]);}for(let t=0;t<e.symbolInstances.length;t++)e.symbolInstances.get(t).crossTileID=0;this.usedCrossTileIDs[t.overscaledZ]||(this.usedCrossTileIDs[t.overscaledZ]={});const a=this.usedCrossTileIDs[t.overscaledZ];for(const i in this.indexes){const s=this.indexes[i];if(Number(i)>t.overscaledZ)for(const i in s){const o=s[i];o.tileID.isChildOf(t)&&o.findMatches(e.symbolInstances,t,a);}else {const o=s[t.scaledTo(Number(i)).key];o&&o.findMatches(e.symbolInstances,t,a);}}for(let t=0;t<e.symbolInstances.length;t++){const s=e.symbolInstances.get(t);s.crossTileID||(s.crossTileID=i.generate(),a[s.crossTileID]=!0);}return void 0===this.indexes[t.overscaledZ]&&(this.indexes[t.overscaledZ]={}),this.indexes[t.overscaledZ][t.key]=new re(t,e.symbolInstances,e.bucketInstanceId),!0}removeBucketCrossTileIDs(t,e){for(const i of e.getCrossTileIDsLists())for(const e of i)delete this.usedCrossTileIDs[t][e];}removeStaleBuckets(t){let e=!1;for(const i in this.indexes){const a=this.indexes[i];for(const s in a)t[a[s].bucketInstanceId]||(this.removeBucketCrossTileIDs(i,a[s]),delete a[s],e=!0);}return e}}class he{constructor(){this.layerIndexes={},this.crossTileIDs=new ne,this.maxBucketInstanceId=0,this.bucketsInCurrentPlacement={};}addLayer(t,e,i){let a=this.layerIndexes[t.id];void 0===a&&(a=this.layerIndexes[t.id]=new le);let s=!1;const o={};a.handleWrapJump(i);for(const i of e){const e=i.getBucket(t);e&&t.id===e.layerIds[0]&&(e.bucketInstanceId||(e.bucketInstanceId=++this.maxBucketInstanceId),a.addBucket(i.tileID,e,this.crossTileIDs)&&(s=!0),o[e.bucketInstanceId]=!0);}return a.removeStaleBuckets(o)&&(s=!0),s}pruneUnusedLayers(t){const e={};t.forEach((t=>{e[t]=!0;}));for(const t in this.layerIndexes)e[t]||delete this.layerIndexes[t];}}const ce=(t,i)=>e.t(t,i&&i.filter((t=>"source.canvas"!==t.identifier))),ue=e.aw();class de extends e.E{constructor(t,i={}){super(),this._rtlPluginLoaded=()=>{for(const t in this.sourceCaches){const e=this.sourceCaches[t].getSource().type;"vector"!==e&&"geojson"!==e||this.sourceCaches[t].reload();}},this.map=t,this.dispatcher=new U(N(),t._getMapId()),this.dispatcher.registerMessageHandler("GG",((t,e)=>this.getGlyphs(t,e))),this.dispatcher.registerMessageHandler("GI",((t,e)=>this.getImages(t,e))),this.imageManager=new T,this.imageManager.setEventedParent(this),this.glyphManager=new C(t._requestManager,i.localIdeographFontFamily),this.lineAtlas=new R(256,512),this.crossTileSymbolIndex=new he,this._spritesImagesIds={},this._layers={},this._order=[],this.sourceCaches={},this.zoomHistory=new e.ax,this._loaded=!1,this._availableImages=[],this._resetUpdates(),this.dispatcher.broadcast("SR",e.ay()),nt().on(st,this._rtlPluginLoaded),this.on("data",(t=>{if("source"!==t.dataType||"metadata"!==t.sourceDataType)return;const e=this.sourceCaches[t.sourceId];if(!e)return;const i=e.getSource();if(i&&i.vectorLayerIds)for(const t in this._layers){const e=this._layers[t];e.source===i.id&&this._validateLayer(e);}}));}loadURL(t,i={},a){this.fire(new e.k("dataloading",{dataType:"style"})),i.validate="boolean"!=typeof i.validate||i.validate;const s=this.map._requestManager.transformRequest(t,"Style");this._loadStyleRequest=new AbortController;const o=this._loadStyleRequest;e.h(s,this._loadStyleRequest).then((t=>{this._loadStyleRequest=null,this._load(t.data,i,a);})).catch((t=>{this._loadStyleRequest=null,t&&!o.signal.aborted&&this.fire(new e.j(t));}));}loadJSON(t,i={},a){this.fire(new e.k("dataloading",{dataType:"style"})),this._frameRequest=new AbortController,o.frameAsync(this._frameRequest).then((()=>{this._frameRequest=null,i.validate=!1!==i.validate,this._load(t,i,a);})).catch((()=>{}));}loadEmpty(){this.fire(new e.k("dataloading",{dataType:"style"})),this._load(ue,{validate:!1});}_load(t,i,a){var s;const o=i.transformStyle?i.transformStyle(a,t):t;if(!i.validate||!ce(this,e.u(o))){this._loaded=!0,this.stylesheet=o;for(const t in o.sources)this.addSource(t,o.sources[t],{validate:!1});o.sprite?this._loadSprite(o.sprite):this.imageManager.setLoaded(!0),this.glyphManager.setURL(o.glyphs),this._createLayers(),this.light=new D(this.stylesheet.light),this.sky=new A(this.stylesheet.sky),this.map.setTerrain(null!==(s=this.stylesheet.terrain)&&void 0!==s?s:null),this.fire(new e.k("data",{dataType:"style"})),this.fire(new e.k("style.load"));}}_createLayers(){const t=e.az(this.stylesheet.layers);this.dispatcher.broadcast("SL",t),this._order=t.map((t=>t.id)),this._layers={},this._serializedLayers=null;for(const i of t){const t=e.aA(i);t.setEventedParent(this,{layer:{id:i.id}}),this._layers[i.id]=t;}}_loadSprite(t,i=!1,a=void 0){let s;this.imageManager.setLoaded(!1),this._spriteRequest=new AbortController,function(t,i,a,s){return e._(this,void 0,void 0,(function*(){const r=x(t),n=a>1?"@2x":"",l={},h={};for(const{id:t,url:a}of r){const o=i.transformRequest(y(a,n,".json"),"SpriteJSON");l[t]=e.h(o,s);const r=i.transformRequest(y(a,n,".png"),"SpriteImage");h[t]=_.getImage(r,s);}return yield Promise.all([...Object.values(l),...Object.values(h)]),function(t,i){return e._(this,void 0,void 0,(function*(){const e={};for(const a in t){e[a]={};const s=o.getImageCanvasContext((yield i[a]).data),r=(yield t[a]).data;for(const t in r){const{width:i,height:o,x:n,y:l,sdf:h,pixelRatio:c,stretchX:u,stretchY:d,content:_,textFitWidth:p,textFitHeight:m}=r[t];e[a][t]={data:null,pixelRatio:c,sdf:h,stretchX:u,stretchY:d,content:_,textFitWidth:p,textFitHeight:m,spriteData:{width:i,height:o,x:n,y:l,context:s}};}}return e}))}(l,h)}))}(t,this.map._requestManager,this.map.getPixelRatio(),this._spriteRequest).then((t=>{if(this._spriteRequest=null,t)for(const e in t){this._spritesImagesIds[e]=[];const a=this._spritesImagesIds[e]?this._spritesImagesIds[e].filter((e=>!(e in t))):[];for(const t of a)this.imageManager.removeImage(t),this._changedImages[t]=!0;for(const a in t[e]){const s="default"===e?a:`${e}:${a}`;this._spritesImagesIds[e].push(s),s in this.imageManager.images?this.imageManager.updateImage(s,t[e][a],!1):this.imageManager.addImage(s,t[e][a]),i&&(this._changedImages[s]=!0);}}})).catch((t=>{this._spriteRequest=null,s=t,this.fire(new e.j(s));})).finally((()=>{this.imageManager.setLoaded(!0),this._availableImages=this.imageManager.listImages(),i&&(this._changed=!0),this.dispatcher.broadcast("SI",this._availableImages),this.fire(new e.k("data",{dataType:"style"})),a&&a(s);}));}_unloadSprite(){for(const t of Object.values(this._spritesImagesIds).flat())this.imageManager.removeImage(t),this._changedImages[t]=!0;this._spritesImagesIds={},this._availableImages=this.imageManager.listImages(),this._changed=!0,this.dispatcher.broadcast("SI",this._availableImages),this.fire(new e.k("data",{dataType:"style"}));}_validateLayer(t){const i=this.sourceCaches[t.source];if(!i)return;const a=t.sourceLayer;if(!a)return;const s=i.getSource();("geojson"===s.type||s.vectorLayerIds&&-1===s.vectorLayerIds.indexOf(a))&&this.fire(new e.j(new Error(`Source layer "${a}" does not exist on source "${s.id}" as specified by style layer "${t.id}".`)));}loaded(){if(!this._loaded)return !1;if(Object.keys(this._updatedSources).length)return !1;for(const t in this.sourceCaches)if(!this.sourceCaches[t].loaded())return !1;return !!this.imageManager.isLoaded()}_serializeByIds(t,i=!1){const a=this._serializedAllLayers();if(!t||0===t.length)return Object.values(i?e.aB(a):a);const s=[];for(const o of t)if(a[o]){const t=i?e.aB(a[o]):a[o];s.push(t);}return s}_serializedAllLayers(){let t=this._serializedLayers;if(t)return t;t=this._serializedLayers={};const e=Object.keys(this._layers);for(const i of e){const e=this._layers[i];"custom"!==e.type&&(t[i]=e.serialize());}return t}hasTransitions(){if(this.light&&this.light.hasTransition())return !0;if(this.sky&&this.sky.hasTransition())return !0;for(const t in this.sourceCaches)if(this.sourceCaches[t].hasTransition())return !0;for(const t in this._layers)if(this._layers[t].hasTransition())return !0;return !1}_checkLoaded(){if(!this._loaded)throw new Error("Style is not done loading.")}update(t){if(!this._loaded)return;const i=this._changed;if(i){const e=Object.keys(this._updatedLayers),i=Object.keys(this._removedLayers);(e.length||i.length)&&this._updateWorkerLayers(e,i);for(const t in this._updatedSources){const e=this._updatedSources[t];if("reload"===e)this._reloadSource(t);else {if("clear"!==e)throw new Error(`Invalid action ${e}`);this._clearSource(t);}}this._updateTilesForChangedImages(),this._updateTilesForChangedGlyphs();for(const e in this._updatedPaintProps)this._layers[e].updateTransitions(t);this.light.updateTransitions(t),this.sky.updateTransitions(t),this._resetUpdates();}const a={};for(const t in this.sourceCaches){const e=this.sourceCaches[t];a[t]=e.used,e.used=!1;}for(const e of this._order){const i=this._layers[e];i.recalculate(t,this._availableImages),!i.isHidden(t.zoom)&&i.source&&(this.sourceCaches[i.source].used=!0);}for(const t in a){const i=this.sourceCaches[t];!!a[t]!=!!i.used&&i.fire(new e.k("data",{sourceDataType:"visibility",dataType:"source",sourceId:t}));}this.light.recalculate(t),this.sky.recalculate(t),this.z=t.zoom,i&&this.fire(new e.k("data",{dataType:"style"}));}_updateTilesForChangedImages(){const t=Object.keys(this._changedImages);if(t.length){for(const e in this.sourceCaches)this.sourceCaches[e].reloadTilesForDependencies(["icons","patterns"],t);this._changedImages={};}}_updateTilesForChangedGlyphs(){if(this._glyphsDidChange){for(const t in this.sourceCaches)this.sourceCaches[t].reloadTilesForDependencies(["glyphs"],[""]);this._glyphsDidChange=!1;}}_updateWorkerLayers(t,e){this.dispatcher.broadcast("UL",{layers:this._serializeByIds(t,!1),removedIds:e});}_resetUpdates(){this._changed=!1,this._updatedLayers={},this._removedLayers={},this._updatedSources={},this._updatedPaintProps={},this._changedImages={},this._glyphsDidChange=!1;}setState(t,i={}){var a;this._checkLoaded();const s=this.serialize();if(t=i.transformStyle?i.transformStyle(s,t):t,(null===(a=i.validate)||void 0===a||a)&&ce(this,e.u(t)))return !1;(t=e.aB(t)).layers=e.az(t.layers);const o=e.aC(s,t),r=this._getOperationsToPerform(o);if(r.unimplemented.length>0)throw new Error(`Unimplemented: ${r.unimplemented.join(", ")}.`);if(0===r.operations.length)return !1;for(const t of r.operations)t();return this.stylesheet=t,this._serializedLayers=null,!0}_getOperationsToPerform(t){const e=[],i=[];for(const a of t)switch(a.command){case"setCenter":case"setZoom":case"setBearing":case"setPitch":continue;case"addLayer":e.push((()=>this.addLayer.apply(this,a.args)));break;case"removeLayer":e.push((()=>this.removeLayer.apply(this,a.args)));break;case"setPaintProperty":e.push((()=>this.setPaintProperty.apply(this,a.args)));break;case"setLayoutProperty":e.push((()=>this.setLayoutProperty.apply(this,a.args)));break;case"setFilter":e.push((()=>this.setFilter.apply(this,a.args)));break;case"addSource":e.push((()=>this.addSource.apply(this,a.args)));break;case"removeSource":e.push((()=>this.removeSource.apply(this,a.args)));break;case"setLayerZoomRange":e.push((()=>this.setLayerZoomRange.apply(this,a.args)));break;case"setLight":e.push((()=>this.setLight.apply(this,a.args)));break;case"setGeoJSONSourceData":e.push((()=>this.setGeoJSONSourceData.apply(this,a.args)));break;case"setGlyphs":e.push((()=>this.setGlyphs.apply(this,a.args)));break;case"setSprite":e.push((()=>this.setSprite.apply(this,a.args)));break;case"setSky":e.push((()=>this.setSky.apply(this,a.args)));break;case"setTerrain":e.push((()=>this.map.setTerrain.apply(this,a.args)));break;case"setTransition":e.push((()=>{}));break;default:i.push(a.command);}return {operations:e,unimplemented:i}}addImage(t,i){if(this.getImage(t))return this.fire(new e.j(new Error(`An image named "${t}" already exists.`)));this.imageManager.addImage(t,i),this._afterImageUpdated(t);}updateImage(t,e){this.imageManager.updateImage(t,e);}getImage(t){return this.imageManager.getImage(t)}removeImage(t){if(!this.getImage(t))return this.fire(new e.j(new Error(`An image named "${t}" does not exist.`)));this.imageManager.removeImage(t),this._afterImageUpdated(t);}_afterImageUpdated(t){this._availableImages=this.imageManager.listImages(),this._changedImages[t]=!0,this._changed=!0,this.dispatcher.broadcast("SI",this._availableImages),this.fire(new e.k("data",{dataType:"style"}));}listImages(){return this._checkLoaded(),this.imageManager.listImages()}addSource(t,i,a={}){if(this._checkLoaded(),void 0!==this.sourceCaches[t])throw new Error(`Source "${t}" already exists.`);if(!i.type)throw new Error(`The type property must be defined, but only the following properties were given: ${Object.keys(i).join(", ")}.`);if(["vector","raster","geojson","video","image"].indexOf(i.type)>=0&&this._validate(e.u.source,`sources.${t}`,i,null,a))return;this.map&&this.map._collectResourceTiming&&(i.collectResourceTiming=!0);const s=this.sourceCaches[t]=new ut(t,i,this.dispatcher);s.style=this,s.setEventedParent(this,(()=>({isSourceLoaded:s.loaded(),source:s.serialize(),sourceId:t}))),s.onAdd(this.map),this._changed=!0;}removeSource(t){if(this._checkLoaded(),void 0===this.sourceCaches[t])throw new Error("There is no source with this ID");for(const i in this._layers)if(this._layers[i].source===t)return this.fire(new e.j(new Error(`Source "${t}" cannot be removed while layer "${i}" is using it.`)));const i=this.sourceCaches[t];delete this.sourceCaches[t],delete this._updatedSources[t],i.fire(new e.k("data",{sourceDataType:"metadata",dataType:"source",sourceId:t})),i.setEventedParent(null),i.onRemove(this.map),this._changed=!0;}setGeoJSONSourceData(t,e){if(this._checkLoaded(),void 0===this.sourceCaches[t])throw new Error(`There is no source with this ID=${t}`);const i=this.sourceCaches[t].getSource();if("geojson"!==i.type)throw new Error(`geojsonSource.type is ${i.type}, which is !== 'geojson`);i.setData(e),this._changed=!0;}getSource(t){return this.sourceCaches[t]&&this.sourceCaches[t].getSource()}addLayer(t,i,a={}){this._checkLoaded();const s=t.id;if(this.getLayer(s))return void this.fire(new e.j(new Error(`Layer "${s}" already exists on this map.`)));let o;if("custom"===t.type){if(ce(this,e.aD(t)))return;o=e.aA(t);}else {if("source"in t&&"object"==typeof t.source&&(this.addSource(s,t.source),t=e.aB(t),t=e.e(t,{source:s})),this._validate(e.u.layer,`layers.${s}`,t,{arrayIndex:-1},a))return;o=e.aA(t),this._validateLayer(o),o.setEventedParent(this,{layer:{id:s}});}const r=i?this._order.indexOf(i):this._order.length;if(i&&-1===r)this.fire(new e.j(new Error(`Cannot add layer "${s}" before non-existing layer "${i}".`)));else {if(this._order.splice(r,0,s),this._layerOrderChanged=!0,this._layers[s]=o,this._removedLayers[s]&&o.source&&"custom"!==o.type){const t=this._removedLayers[s];delete this._removedLayers[s],t.type!==o.type?this._updatedSources[o.source]="clear":(this._updatedSources[o.source]="reload",this.sourceCaches[o.source].pause());}this._updateLayer(o),o.onAdd&&o.onAdd(this.map);}}moveLayer(t,i){if(this._checkLoaded(),this._changed=!0,!this._layers[t])return void this.fire(new e.j(new Error(`The layer '${t}' does not exist in the map's style and cannot be moved.`)));if(t===i)return;const a=this._order.indexOf(t);this._order.splice(a,1);const s=i?this._order.indexOf(i):this._order.length;i&&-1===s?this.fire(new e.j(new Error(`Cannot move layer "${t}" before non-existing layer "${i}".`))):(this._order.splice(s,0,t),this._layerOrderChanged=!0);}removeLayer(t){this._checkLoaded();const i=this._layers[t];if(!i)return void this.fire(new e.j(new Error(`Cannot remove non-existing layer "${t}".`)));i.setEventedParent(null);const a=this._order.indexOf(t);this._order.splice(a,1),this._layerOrderChanged=!0,this._changed=!0,this._removedLayers[t]=i,delete this._layers[t],this._serializedLayers&&delete this._serializedLayers[t],delete this._updatedLayers[t],delete this._updatedPaintProps[t],i.onRemove&&i.onRemove(this.map);}getLayer(t){return this._layers[t]}getLayersOrder(){return [...this._order]}hasLayer(t){return t in this._layers}setLayerZoomRange(t,i,a){this._checkLoaded();const s=this.getLayer(t);s?s.minzoom===i&&s.maxzoom===a||(null!=i&&(s.minzoom=i),null!=a&&(s.maxzoom=a),this._updateLayer(s)):this.fire(new e.j(new Error(`Cannot set the zoom range of non-existing layer "${t}".`)));}setFilter(t,i,a={}){this._checkLoaded();const s=this.getLayer(t);if(s){if(!e.aE(s.filter,i))return null==i?(s.filter=void 0,void this._updateLayer(s)):void(this._validate(e.u.filter,`layers.${s.id}.filter`,i,null,a)||(s.filter=e.aB(i),this._updateLayer(s)))}else this.fire(new e.j(new Error(`Cannot filter non-existing layer "${t}".`)));}getFilter(t){return e.aB(this.getLayer(t).filter)}setLayoutProperty(t,i,a,s={}){this._checkLoaded();const o=this.getLayer(t);o?e.aE(o.getLayoutProperty(i),a)||(o.setLayoutProperty(i,a,s),this._updateLayer(o)):this.fire(new e.j(new Error(`Cannot style non-existing layer "${t}".`)));}getLayoutProperty(t,i){const a=this.getLayer(t);if(a)return a.getLayoutProperty(i);this.fire(new e.j(new Error(`Cannot get style of non-existing layer "${t}".`)));}setPaintProperty(t,i,a,s={}){this._checkLoaded();const o=this.getLayer(t);o?e.aE(o.getPaintProperty(i),a)||(o.setPaintProperty(i,a,s)&&this._updateLayer(o),this._changed=!0,this._updatedPaintProps[t]=!0,this._serializedLayers=null):this.fire(new e.j(new Error(`Cannot style non-existing layer "${t}".`)));}getPaintProperty(t,e){return this.getLayer(t).getPaintProperty(e)}setFeatureState(t,i){this._checkLoaded();const a=t.source,s=t.sourceLayer,o=this.sourceCaches[a];if(void 0===o)return void this.fire(new e.j(new Error(`The source '${a}' does not exist in the map's style.`)));const r=o.getSource().type;"geojson"===r&&s?this.fire(new e.j(new Error("GeoJSON sources cannot have a sourceLayer parameter."))):"vector"!==r||s?(void 0===t.id&&this.fire(new e.j(new Error("The feature id parameter must be provided."))),o.setFeatureState(s,t.id,i)):this.fire(new e.j(new Error("The sourceLayer parameter must be provided for vector source types.")));}removeFeatureState(t,i){this._checkLoaded();const a=t.source,s=this.sourceCaches[a];if(void 0===s)return void this.fire(new e.j(new Error(`The source '${a}' does not exist in the map's style.`)));const o=s.getSource().type,r="vector"===o?t.sourceLayer:void 0;"vector"!==o||r?i&&"string"!=typeof t.id&&"number"!=typeof t.id?this.fire(new e.j(new Error("A feature id is required to remove its specific state property."))):s.removeFeatureState(r,t.id,i):this.fire(new e.j(new Error("The sourceLayer parameter must be provided for vector source types.")));}getFeatureState(t){this._checkLoaded();const i=t.source,a=t.sourceLayer,s=this.sourceCaches[i];if(void 0!==s)return "vector"!==s.getSource().type||a?(void 0===t.id&&this.fire(new e.j(new Error("The feature id parameter must be provided."))),s.getFeatureState(a,t.id)):void this.fire(new e.j(new Error("The sourceLayer parameter must be provided for vector source types.")));this.fire(new e.j(new Error(`The source '${i}' does not exist in the map's style.`)));}getTransition(){return e.e({duration:300,delay:0},this.stylesheet&&this.stylesheet.transition)}serialize(){if(!this._loaded)return;const t=e.aF(this.sourceCaches,(t=>t.serialize())),i=this._serializeByIds(this._order,!0),a=this.map.getTerrain()||void 0,s=this.stylesheet;return e.aG({version:s.version,name:s.name,metadata:s.metadata,light:s.light,sky:s.sky,center:s.center,zoom:s.zoom,bearing:s.bearing,pitch:s.pitch,sprite:s.sprite,glyphs:s.glyphs,transition:s.transition,sources:t,layers:i,terrain:a},(t=>void 0!==t))}_updateLayer(t){this._updatedLayers[t.id]=!0,t.source&&!this._updatedSources[t.source]&&"raster"!==this.sourceCaches[t.source].getSource().type&&(this._updatedSources[t.source]="reload",this.sourceCaches[t.source].pause()),this._serializedLayers=null,this._changed=!0;}_flattenAndSortRenderedFeatures(t){const e=t=>"fill-extrusion"===this._layers[t].type,i={},a=[];for(let s=this._order.length-1;s>=0;s--){const o=this._order[s];if(e(o)){i[o]=s;for(const e of t){const t=e[o];if(t)for(const e of t)a.push(e);}}}a.sort(((t,e)=>e.intersectionZ-t.intersectionZ));const s=[];for(let o=this._order.length-1;o>=0;o--){const r=this._order[o];if(e(r))for(let t=a.length-1;t>=0;t--){const e=a[t].feature;if(i[e.layer.id]<o)break;s.push(e),a.pop();}else for(const e of t){const t=e[r];if(t)for(const e of t)s.push(e.feature);}}return s}queryRenderedFeatures(t,i,a){i&&i.filter&&this._validate(e.u.filter,"queryRenderedFeatures.filter",i.filter,null,i);const s={};if(i&&i.layers){if(!Array.isArray(i.layers))return this.fire(new e.j(new Error("parameters.layers must be an Array."))),[];for(const t of i.layers){const i=this._layers[t];if(!i)return this.fire(new e.j(new Error(`The layer '${t}' does not exist in the map's style and cannot be queried for features.`))),[];s[i.source]=!0;}}const o=[];i.availableImages=this._availableImages;const r=this._serializedAllLayers();for(const e in this.sourceCaches)i.layers&&!s[e]||o.push(q(this.sourceCaches[e],this._layers,r,t,i,a));return this.placement&&o.push(function(t,e,i,a,s,o,r){const n={},l=o.queryRenderedSymbols(a),h=[];for(const t of Object.keys(l).map(Number))h.push(r[t]);h.sort(V);for(const i of h){const a=i.featureIndex.lookupSymbolFeatures(l[i.bucketInstanceId],e,i.bucketIndex,i.sourceLayerIndex,s.filter,s.layers,s.availableImages,t);for(const t in a){const e=n[t]=n[t]||[],s=a[t];s.sort(((t,e)=>{const a=i.featureSortOrder;if(a){const i=a.indexOf(t.featureIndex);return a.indexOf(e.featureIndex)-i}return e.featureIndex-t.featureIndex}));for(const t of s)e.push(t);}}for(const e in n)n[e].forEach((a=>{const s=a.feature,o=i[t[e].source].getFeatureState(s.layer["source-layer"],s.id);s.source=s.layer.source,s.layer["source-layer"]&&(s.sourceLayer=s.layer["source-layer"]),s.state=o;}));return n}(this._layers,r,this.sourceCaches,t,i,this.placement.collisionIndex,this.placement.retainedQueryData)),this._flattenAndSortRenderedFeatures(o)}querySourceFeatures(t,i){i&&i.filter&&this._validate(e.u.filter,"querySourceFeatures.filter",i.filter,null,i);const a=this.sourceCaches[t];return a?function(t,e){const i=t.getRenderableIds().map((e=>t.getTileByID(e))),a=[],s={};for(let t=0;t<i.length;t++){const o=i[t],r=o.tileID.canonical.key;s[r]||(s[r]=!0,o.querySourceFeatures(a,e));}return a}(a,i):[]}getLight(){return this.light.getLight()}setLight(t,i={}){this._checkLoaded();const a=this.light.getLight();let s=!1;for(const i in t)if(!e.aE(t[i],a[i])){s=!0;break}if(!s)return;const r={now:o.now(),transition:e.e({duration:300,delay:0},this.stylesheet.transition)};this.light.setLight(t,i),this.light.updateTransitions(r);}getSky(){var t;return null===(t=this.stylesheet)||void 0===t?void 0:t.sky}setSky(t,i={}){const a=this.getSky();let s=!1;if(!t&&!a)return;if(t&&!a)s=!0;else if(!t&&a)s=!0;else for(const i in t)if(!e.aE(t[i],a[i])){s=!0;break}if(!s)return;const r={now:o.now(),transition:e.e({duration:300,delay:0},this.stylesheet.transition)};this.stylesheet.sky=t,this.sky.setSky(t,i),this.sky.updateTransitions(r);}_validate(t,i,a,s,o={}){return (!o||!1!==o.validate)&&ce(this,t.call(e.u,e.e({key:i,style:this.serialize(),value:a,styleSpec:e.v},s)))}_remove(t=!0){this._frameRequest&&(this._frameRequest.abort(),this._frameRequest=null),this._loadStyleRequest&&(this._loadStyleRequest.abort(),this._loadStyleRequest=null),this._spriteRequest&&(this._spriteRequest.abort(),this._spriteRequest=null),nt().off(st,this._rtlPluginLoaded);for(const t in this._layers)this._layers[t].setEventedParent(null);for(const t in this.sourceCaches){const e=this.sourceCaches[t];e.setEventedParent(null),e.onRemove(this.map);}this.imageManager.setEventedParent(null),this.setEventedParent(null),t&&this.dispatcher.broadcast("RM",void 0),this.dispatcher.remove(t);}_clearSource(t){this.sourceCaches[t].clearTiles();}_reloadSource(t){this.sourceCaches[t].resume(),this.sourceCaches[t].reload();}_updateSources(t){for(const e in this.sourceCaches)this.sourceCaches[e].update(t,this.map.terrain);}_generateCollisionBoxes(){for(const t in this.sourceCaches)this._reloadSource(t);}_updatePlacement(t,e,i,a,s=!1){let r=!1,n=!1;const l={};for(const e of this._order){const i=this._layers[e];if("symbol"!==i.type)continue;if(!l[i.source]){const t=this.sourceCaches[i.source];l[i.source]=t.getRenderableIds(!0).map((e=>t.getTileByID(e))).sort(((t,e)=>e.tileID.overscaledZ-t.tileID.overscaledZ||(t.tileID.isLessThan(e.tileID)?-1:1)));}const a=this.crossTileSymbolIndex.addLayer(i,l[i.source],t.center.lng);r=r||a;}if(this.crossTileSymbolIndex.pruneUnusedLayers(this._order),((s=s||this._layerOrderChanged||0===i)||!this.pauseablePlacement||this.pauseablePlacement.isDone()&&!this.placement.stillRecent(o.now(),t.zoom))&&(this.pauseablePlacement=new se(t,this.map.terrain,this._order,s,e,i,a,this.placement),this._layerOrderChanged=!1),this.pauseablePlacement.isDone()?this.placement.setStale():(this.pauseablePlacement.continuePlacement(this._order,this._layers,l),this.pauseablePlacement.isDone()&&(this.placement=this.pauseablePlacement.commit(o.now()),n=!0),r&&this.pauseablePlacement.placement.setStale()),n||r)for(const t of this._order){const e=this._layers[t];"symbol"===e.type&&this.placement.updateLayerOpacities(e,l[e.source]);}return !this.pauseablePlacement.isDone()||this.placement.hasTransitions(o.now())}_releaseSymbolFadeTiles(){for(const t in this.sourceCaches)this.sourceCaches[t].releaseSymbolFadeTiles();}getImages(t,i){return e._(this,void 0,void 0,(function*(){const t=yield this.imageManager.getImages(i.icons);this._updateTilesForChangedImages();const e=this.sourceCaches[i.source];return e&&e.setDependencies(i.tileID.key,i.type,i.icons),t}))}getGlyphs(t,i){return e._(this,void 0,void 0,(function*(){const t=yield this.glyphManager.getGlyphs(i.stacks),e=this.sourceCaches[i.source];return e&&e.setDependencies(i.tileID.key,i.type,[""]),t}))}getGlyphsUrl(){return this.stylesheet.glyphs||null}setGlyphs(t,i={}){this._checkLoaded(),t&&this._validate(e.u.glyphs,"glyphs",t,null,i)||(this._glyphsDidChange=!0,this.stylesheet.glyphs=t,this.glyphManager.entries={},this.glyphManager.setURL(t));}addSprite(t,i,a={},s){this._checkLoaded();const o=[{id:t,url:i}],r=[...x(this.stylesheet.sprite),...o];this._validate(e.u.sprite,"sprite",r,null,a)||(this.stylesheet.sprite=r,this._loadSprite(o,!0,s));}removeSprite(t){this._checkLoaded();const i=x(this.stylesheet.sprite);if(i.find((e=>e.id===t))){if(this._spritesImagesIds[t])for(const e of this._spritesImagesIds[t])this.imageManager.removeImage(e),this._changedImages[e]=!0;i.splice(i.findIndex((e=>e.id===t)),1),this.stylesheet.sprite=i.length>0?i:void 0,delete this._spritesImagesIds[t],this._availableImages=this.imageManager.listImages(),this._changed=!0,this.dispatcher.broadcast("SI",this._availableImages),this.fire(new e.k("data",{dataType:"style"}));}else this.fire(new e.j(new Error(`Sprite "${t}" doesn't exists on this map.`)));}getSprite(){return x(this.stylesheet.sprite)}setSprite(t,i={},a){this._checkLoaded(),t&&this._validate(e.u.sprite,"sprite",t,null,i)||(this.stylesheet.sprite=t,t?this._loadSprite(t,!0,a):(this._unloadSprite(),a&&a(null)));}}var _e=e.Y([{name:"a_pos",type:"Int16",components:2}]);const pe={prelude:me("#ifdef GL_ES\nprecision mediump float;\n#else\n#if !defined(lowp)\n#define lowp\n#endif\n#if !defined(mediump)\n#define mediump\n#endif\n#if !defined(highp)\n#define highp\n#endif\n#endif\n","#ifdef GL_ES\nprecision highp float;\n#else\n#if !defined(lowp)\n#define lowp\n#endif\n#if !defined(mediump)\n#define mediump\n#endif\n#if !defined(highp)\n#define highp\n#endif\n#endif\nvec2 unpack_float(const float packedValue) {int packedIntValue=int(packedValue);int v0=packedIntValue/256;return vec2(v0,packedIntValue-v0*256);}vec2 unpack_opacity(const float packedOpacity) {int intOpacity=int(packedOpacity)/2;return vec2(float(intOpacity)/127.0,mod(packedOpacity,2.0));}vec4 decode_color(const vec2 encodedColor) {return vec4(unpack_float(encodedColor[0])/255.0,unpack_float(encodedColor[1])/255.0\n);}float unpack_mix_vec2(const vec2 packedValue,const float t) {return mix(packedValue[0],packedValue[1],t);}vec4 unpack_mix_color(const vec4 packedColors,const float t) {vec4 minColor=decode_color(vec2(packedColors[0],packedColors[1]));vec4 maxColor=decode_color(vec2(packedColors[2],packedColors[3]));return mix(minColor,maxColor,t);}vec2 get_pattern_pos(const vec2 pixel_coord_upper,const vec2 pixel_coord_lower,const vec2 pattern_size,const float tile_units_to_pixels,const vec2 pos) {vec2 offset=mod(mod(mod(pixel_coord_upper,pattern_size)*256.0,pattern_size)*256.0+pixel_coord_lower,pattern_size);return (tile_units_to_pixels*pos+offset)/pattern_size;}\n#ifdef TERRAIN3D\nuniform sampler2D u_terrain;uniform float u_terrain_dim;uniform mat4 u_terrain_matrix;uniform vec4 u_terrain_unpack;uniform float u_terrain_exaggeration;uniform highp sampler2D u_depth;\n#endif\nconst highp vec4 bitSh=vec4(256.*256.*256.,256.*256.,256.,1.);const highp vec4 bitShifts=vec4(1.)/bitSh;highp float unpack(highp vec4 color) {return dot(color,bitShifts);}highp float depthOpacity(vec3 frag) {\n#ifdef TERRAIN3D\nhighp float d=unpack(texture2D(u_depth,frag.xy*0.5+0.5))+0.0001-frag.z;return 1.0-max(0.0,min(1.0,-d*500.0));\n#else\nreturn 1.0;\n#endif\n}float calculate_visibility(vec4 pos) {\n#ifdef TERRAIN3D\nvec3 frag=pos.xyz/pos.w;highp float d=depthOpacity(frag);if (d > 0.95) return 1.0;return (d+depthOpacity(frag+vec3(0.0,0.01,0.0)))/2.0;\n#else\nreturn 1.0;\n#endif\n}float ele(vec2 pos) {\n#ifdef TERRAIN3D\nvec4 rgb=(texture2D(u_terrain,pos)*255.0)*u_terrain_unpack;return rgb.r+rgb.g+rgb.b-u_terrain_unpack.a;\n#else\nreturn 0.0;\n#endif\n}float get_elevation(vec2 pos) {\n#ifdef TERRAIN3D\nvec2 coord=(u_terrain_matrix*vec4(pos,0.0,1.0)).xy*u_terrain_dim+1.0;vec2 f=fract(coord);vec2 c=(floor(coord)+0.5)/(u_terrain_dim+2.0);float d=1.0/(u_terrain_dim+2.0);float tl=ele(c);float tr=ele(c+vec2(d,0.0));float bl=ele(c+vec2(0.0,d));float br=ele(c+vec2(d,d));float elevation=mix(mix(tl,tr,f.x),mix(bl,br,f.x),f.y);return elevation*u_terrain_exaggeration;\n#else\nreturn 0.0;\n#endif\n}"),background:me("uniform vec4 u_color;uniform float u_opacity;void main() {gl_FragColor=u_color*u_opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec2 a_pos;uniform mat4 u_matrix;void main() {gl_Position=u_matrix*vec4(a_pos,0,1);}"),backgroundPattern:me("uniform vec2 u_pattern_tl_a;uniform vec2 u_pattern_br_a;uniform vec2 u_pattern_tl_b;uniform vec2 u_pattern_br_b;uniform vec2 u_texsize;uniform float u_mix;uniform float u_opacity;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;void main() {vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(u_pattern_tl_a/u_texsize,u_pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(u_pattern_tl_b/u_texsize,u_pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);gl_FragColor=mix(color1,color2,u_mix)*u_opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_pattern_size_a;uniform vec2 u_pattern_size_b;uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform float u_scale_a;uniform float u_scale_b;uniform float u_tile_units_to_pixels;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;void main() {gl_Position=u_matrix*vec4(a_pos,0,1);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,u_scale_a*u_pattern_size_a,u_tile_units_to_pixels,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,u_scale_b*u_pattern_size_b,u_tile_units_to_pixels,a_pos);}"),circle:me("varying vec3 v_data;varying float v_visibility;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define mediump float radius\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define highp vec4 stroke_color\n#pragma mapbox: define mediump float stroke_width\n#pragma mapbox: define lowp float stroke_opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize mediump float radius\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize highp vec4 stroke_color\n#pragma mapbox: initialize mediump float stroke_width\n#pragma mapbox: initialize lowp float stroke_opacity\nvec2 extrude=v_data.xy;float extrude_length=length(extrude);float antialiased_blur=v_data.z;float opacity_t=smoothstep(0.0,antialiased_blur,extrude_length-1.0);float color_t=stroke_width < 0.01 ? 0.0 : smoothstep(antialiased_blur,0.0,extrude_length-radius/(radius+stroke_width));gl_FragColor=v_visibility*opacity_t*mix(color*opacity,stroke_color*stroke_opacity,color_t);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform bool u_scale_with_map;uniform bool u_pitch_with_map;uniform vec2 u_extrude_scale;uniform lowp float u_device_pixel_ratio;uniform highp float u_camera_to_center_distance;attribute vec2 a_pos;varying vec3 v_data;varying float v_visibility;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define mediump float radius\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define highp vec4 stroke_color\n#pragma mapbox: define mediump float stroke_width\n#pragma mapbox: define lowp float stroke_opacity\nvoid main(void) {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize mediump float radius\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize highp vec4 stroke_color\n#pragma mapbox: initialize mediump float stroke_width\n#pragma mapbox: initialize lowp float stroke_opacity\nvec2 extrude=vec2(mod(a_pos,2.0)*2.0-1.0);vec2 circle_center=floor(a_pos*0.5);float ele=get_elevation(circle_center);v_visibility=calculate_visibility(u_matrix*vec4(circle_center,ele,1.0));if (u_pitch_with_map) {vec2 corner_position=circle_center;if (u_scale_with_map) {corner_position+=extrude*(radius+stroke_width)*u_extrude_scale;} else {vec4 projected_center=u_matrix*vec4(circle_center,0,1);corner_position+=extrude*(radius+stroke_width)*u_extrude_scale*(projected_center.w/u_camera_to_center_distance);}gl_Position=u_matrix*vec4(corner_position,ele,1);} else {gl_Position=u_matrix*vec4(circle_center,ele,1);if (u_scale_with_map) {gl_Position.xy+=extrude*(radius+stroke_width)*u_extrude_scale*u_camera_to_center_distance;} else {gl_Position.xy+=extrude*(radius+stroke_width)*u_extrude_scale*gl_Position.w;}}float antialiasblur=-max(1.0/u_device_pixel_ratio/(radius+stroke_width),blur);v_data=vec3(extrude.x,extrude.y,antialiasblur);}"),clippingMask:me("void main() {gl_FragColor=vec4(1.0);}","attribute vec2 a_pos;uniform mat4 u_matrix;void main() {gl_Position=u_matrix*vec4(a_pos,0,1);}"),heatmap:me("uniform highp float u_intensity;varying vec2 v_extrude;\n#pragma mapbox: define highp float weight\n#define GAUSS_COEF 0.3989422804014327\nvoid main() {\n#pragma mapbox: initialize highp float weight\nfloat d=-0.5*3.0*3.0*dot(v_extrude,v_extrude);float val=weight*u_intensity*GAUSS_COEF*exp(d);gl_FragColor=vec4(val,1.0,1.0,1.0);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform float u_extrude_scale;uniform float u_opacity;uniform float u_intensity;attribute vec2 a_pos;varying vec2 v_extrude;\n#pragma mapbox: define highp float weight\n#pragma mapbox: define mediump float radius\nconst highp float ZERO=1.0/255.0/16.0;\n#define GAUSS_COEF 0.3989422804014327\nvoid main(void) {\n#pragma mapbox: initialize highp float weight\n#pragma mapbox: initialize mediump float radius\nvec2 unscaled_extrude=vec2(mod(a_pos,2.0)*2.0-1.0);float S=sqrt(-2.0*log(ZERO/weight/u_intensity/GAUSS_COEF))/3.0;v_extrude=S*unscaled_extrude;vec2 extrude=v_extrude*radius*u_extrude_scale;vec4 pos=vec4(floor(a_pos*0.5)+extrude,get_elevation(floor(a_pos*0.5)),1);gl_Position=u_matrix*pos;}"),heatmapTexture:me("uniform sampler2D u_image;uniform sampler2D u_color_ramp;uniform float u_opacity;varying vec2 v_pos;void main() {float t=texture2D(u_image,v_pos).r;vec4 color=texture2D(u_color_ramp,vec2(t,0.5));gl_FragColor=color*u_opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(0.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_world;attribute vec2 a_pos;varying vec2 v_pos;void main() {gl_Position=u_matrix*vec4(a_pos*u_world,0,1);v_pos.x=a_pos.x;v_pos.y=1.0-a_pos.y;}"),collisionBox:me("varying float v_placed;varying float v_notUsed;void main() {float alpha=0.5;gl_FragColor=vec4(1.0,0.0,0.0,1.0)*alpha;if (v_placed > 0.5) {gl_FragColor=vec4(0.0,0.0,1.0,0.5)*alpha;}if (v_notUsed > 0.5) {gl_FragColor*=.1;}}","attribute vec2 a_anchor_pos;attribute vec2 a_placed;attribute vec2 a_box_real;uniform mat4 u_matrix;uniform vec2 u_pixel_extrude_scale;varying float v_placed;varying float v_notUsed;vec4 projectTileWithElevation(vec2 posInTile,float elevation) {return u_matrix*vec4(posInTile,elevation,1.0);}void main() {gl_Position=projectTileWithElevation(a_anchor_pos,get_elevation(a_anchor_pos));gl_Position.xy=((a_box_real+0.5)*u_pixel_extrude_scale*2.0-1.0)*vec2(1.0,-1.0)*gl_Position.w;if (gl_Position.z/gl_Position.w < 1.1) {gl_Position.z=0.5;}v_placed=a_placed.x;v_notUsed=a_placed.y;}"),collisionCircle:me("varying float v_radius;varying vec2 v_extrude;varying float v_perspective_ratio;varying float v_collision;void main() {float alpha=0.5*min(v_perspective_ratio,1.0);float stroke_radius=0.9*max(v_perspective_ratio,1.0);float distance_to_center=length(v_extrude);float distance_to_edge=abs(distance_to_center-v_radius);float opacity_t=smoothstep(-stroke_radius,0.0,-distance_to_edge);vec4 color=mix(vec4(0.0,0.0,1.0,0.5),vec4(1.0,0.0,0.0,1.0),v_collision);gl_FragColor=color*alpha*opacity_t;}","attribute vec2 a_pos;attribute float a_radius;attribute vec2 a_flags;uniform mat4 u_matrix;uniform mat4 u_inv_matrix;uniform vec2 u_viewport_size;uniform float u_camera_to_center_distance;varying float v_radius;varying vec2 v_extrude;varying float v_perspective_ratio;varying float v_collision;vec3 toTilePosition(vec2 screenPos) {vec4 rayStart=u_inv_matrix*vec4(screenPos,-1.0,1.0);vec4 rayEnd  =u_inv_matrix*vec4(screenPos, 1.0,1.0);rayStart.xyz/=rayStart.w;rayEnd.xyz  /=rayEnd.w;highp float t=(0.0-rayStart.z)/(rayEnd.z-rayStart.z);return mix(rayStart.xyz,rayEnd.xyz,t);}void main() {vec2 quadCenterPos=a_pos;float radius=a_radius;float collision=a_flags.x;float vertexIdx=a_flags.y;vec2 quadVertexOffset=vec2(mix(-1.0,1.0,float(vertexIdx >=2.0)),mix(-1.0,1.0,float(vertexIdx >=1.0 && vertexIdx <=2.0)));vec2 quadVertexExtent=quadVertexOffset*radius;vec3 tilePos=toTilePosition(quadCenterPos);vec4 clipPos=u_matrix*vec4(tilePos,1.0);highp float camera_to_anchor_distance=clipPos.w;highp float collision_perspective_ratio=clamp(0.5+0.5*(u_camera_to_center_distance/camera_to_anchor_distance),0.0,4.0);float padding_factor=1.2;v_radius=radius;v_extrude=quadVertexExtent*padding_factor;v_perspective_ratio=collision_perspective_ratio;v_collision=collision;gl_Position=vec4(clipPos.xyz/clipPos.w,1.0)+vec4(quadVertexExtent*padding_factor/u_viewport_size*2.0,0.0,0.0);}"),debug:me("uniform highp vec4 u_color;uniform sampler2D u_overlay;varying vec2 v_uv;void main() {vec4 overlay_color=texture2D(u_overlay,v_uv);gl_FragColor=mix(u_color,overlay_color,overlay_color.a);}","attribute vec2 a_pos;varying vec2 v_uv;uniform mat4 u_matrix;uniform float u_overlay_scale;void main() {v_uv=a_pos/8192.0;gl_Position=u_matrix*vec4(a_pos*u_overlay_scale,get_elevation(a_pos),1);}"),fill:me("#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float opacity\ngl_FragColor=color*opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec2 a_pos;uniform mat4 u_matrix;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float opacity\ngl_Position=u_matrix*vec4(a_pos,0,1);}"),fillOutline:me("varying vec2 v_pos;\n#pragma mapbox: define highp vec4 outline_color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 outline_color\n#pragma mapbox: initialize lowp float opacity\nfloat dist=length(v_pos-gl_FragCoord.xy);float alpha=1.0-smoothstep(0.0,1.0,dist);gl_FragColor=outline_color*(alpha*opacity);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec2 a_pos;uniform mat4 u_matrix;uniform vec2 u_world;varying vec2 v_pos;\n#pragma mapbox: define highp vec4 outline_color\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 outline_color\n#pragma mapbox: initialize lowp float opacity\ngl_Position=u_matrix*vec4(a_pos,0,1);v_pos=(gl_Position.xy/gl_Position.w+1.0)/2.0*u_world;}"),fillOutlinePattern:me("uniform vec2 u_texsize;uniform sampler2D u_image;uniform float u_fade;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec2 v_pos;\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);float dist=length(v_pos-gl_FragCoord.xy);float alpha=1.0-smoothstep(0.0,1.0,dist);gl_FragColor=mix(color1,color2,u_fade)*alpha*opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_world;uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform vec3 u_scale;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec2 v_pos;\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;gl_Position=u_matrix*vec4(a_pos,0,1);vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileRatio,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileRatio,a_pos);v_pos=(gl_Position.xy/gl_Position.w+1.0)/2.0*u_world;}"),fillPattern:me("#ifdef GL_ES\nprecision highp float;\n#endif\nuniform vec2 u_texsize;uniform float u_fade;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);gl_FragColor=mix(color1,color2,u_fade)*opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform vec3 u_scale;attribute vec2 a_pos;varying vec2 v_pos_a;varying vec2 v_pos_b;\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileZoomRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;gl_Position=u_matrix*vec4(a_pos,0,1);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileZoomRatio,a_pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileZoomRatio,a_pos);}"),fillExtrusion:me("varying vec4 v_color;void main() {gl_FragColor=v_color;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec3 u_lightcolor;uniform lowp vec3 u_lightpos;uniform lowp float u_lightintensity;uniform float u_vertical_gradient;uniform lowp float u_opacity;attribute vec2 a_pos;attribute vec4 a_normal_ed;\n#ifdef TERRAIN3D\nattribute vec2 a_centroid;\n#endif\nvarying vec4 v_color;\n#pragma mapbox: define highp float base\n#pragma mapbox: define highp float height\n#pragma mapbox: define highp vec4 color\nvoid main() {\n#pragma mapbox: initialize highp float base\n#pragma mapbox: initialize highp float height\n#pragma mapbox: initialize highp vec4 color\nvec3 normal=a_normal_ed.xyz;\n#ifdef TERRAIN3D\nfloat height_terrain3d_offset=get_elevation(a_centroid);float base_terrain3d_offset=height_terrain3d_offset-(base > 0.0 ? 0.0 : 10.0);\n#else\nfloat height_terrain3d_offset=0.0;float base_terrain3d_offset=0.0;\n#endif\nbase=max(0.0,base)+base_terrain3d_offset;height=max(0.0,height)+height_terrain3d_offset;float t=mod(normal.x,2.0);gl_Position=u_matrix*vec4(a_pos,t > 0.0 ? height : base,1);float colorvalue=color.r*0.2126+color.g*0.7152+color.b*0.0722;v_color=vec4(0.0,0.0,0.0,1.0);vec4 ambientlight=vec4(0.03,0.03,0.03,1.0);color+=ambientlight;float directional=clamp(dot(normal/16384.0,u_lightpos),0.0,1.0);directional=mix((1.0-u_lightintensity),max((1.0-colorvalue+u_lightintensity),1.0),directional);if (normal.y !=0.0) {directional*=((1.0-u_vertical_gradient)+(u_vertical_gradient*clamp((t+base)*pow(height/150.0,0.5),mix(0.7,0.98,1.0-u_lightintensity),1.0)));}v_color.r+=clamp(color.r*directional*u_lightcolor.r,mix(0.0,0.3,1.0-u_lightcolor.r),1.0);v_color.g+=clamp(color.g*directional*u_lightcolor.g,mix(0.0,0.3,1.0-u_lightcolor.g),1.0);v_color.b+=clamp(color.b*directional*u_lightcolor.b,mix(0.0,0.3,1.0-u_lightcolor.b),1.0);v_color*=u_opacity;}"),fillExtrusionPattern:me("uniform vec2 u_texsize;uniform float u_fade;uniform sampler2D u_image;varying vec2 v_pos_a;varying vec2 v_pos_b;varying vec4 v_lighting;\n#pragma mapbox: define lowp float base\n#pragma mapbox: define lowp float height\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float base\n#pragma mapbox: initialize lowp float height\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;vec2 imagecoord=mod(v_pos_a,1.0);vec2 pos=mix(pattern_tl_a/u_texsize,pattern_br_a/u_texsize,imagecoord);vec4 color1=texture2D(u_image,pos);vec2 imagecoord_b=mod(v_pos_b,1.0);vec2 pos2=mix(pattern_tl_b/u_texsize,pattern_br_b/u_texsize,imagecoord_b);vec4 color2=texture2D(u_image,pos2);vec4 mixedColor=mix(color1,color2,u_fade);gl_FragColor=mixedColor*v_lighting;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_pixel_coord_upper;uniform vec2 u_pixel_coord_lower;uniform float u_height_factor;uniform vec3 u_scale;uniform float u_vertical_gradient;uniform lowp float u_opacity;uniform vec3 u_lightcolor;uniform lowp vec3 u_lightpos;uniform lowp float u_lightintensity;attribute vec2 a_pos;attribute vec4 a_normal_ed;\n#ifdef TERRAIN3D\nattribute vec2 a_centroid;\n#endif\nvarying vec2 v_pos_a;varying vec2 v_pos_b;varying vec4 v_lighting;\n#pragma mapbox: define lowp float base\n#pragma mapbox: define lowp float height\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float base\n#pragma mapbox: initialize lowp float height\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec3 normal=a_normal_ed.xyz;float edgedistance=a_normal_ed.w;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;\n#ifdef TERRAIN3D\nfloat height_terrain3d_offset=get_elevation(a_centroid);float base_terrain3d_offset=height_terrain3d_offset-(base > 0.0 ? 0.0 : 10.0);\n#else\nfloat height_terrain3d_offset=0.0;float base_terrain3d_offset=0.0;\n#endif\nbase=max(0.0,base)+base_terrain3d_offset;height=max(0.0,height)+height_terrain3d_offset;float t=mod(normal.x,2.0);float z=t > 0.0 ? height : base;gl_Position=u_matrix*vec4(a_pos,z,1);vec2 pos=normal.x==1.0 && normal.y==0.0 && normal.z==16384.0\n? a_pos\n: vec2(edgedistance,z*u_height_factor);v_pos_a=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,fromScale*display_size_a,tileRatio,pos);v_pos_b=get_pattern_pos(u_pixel_coord_upper,u_pixel_coord_lower,toScale*display_size_b,tileRatio,pos);v_lighting=vec4(0.0,0.0,0.0,1.0);float directional=clamp(dot(normal/16383.0,u_lightpos),0.0,1.0);directional=mix((1.0-u_lightintensity),max((0.5+u_lightintensity),1.0),directional);if (normal.y !=0.0) {directional*=((1.0-u_vertical_gradient)+(u_vertical_gradient*clamp((t+base)*pow(height/150.0,0.5),mix(0.7,0.98,1.0-u_lightintensity),1.0)));}v_lighting.rgb+=clamp(directional*u_lightcolor,mix(vec3(0.0),vec3(0.3),1.0-u_lightcolor),vec3(1.0));v_lighting*=u_opacity;}"),hillshadePrepare:me("#ifdef GL_ES\nprecision highp float;\n#endif\nuniform sampler2D u_image;varying vec2 v_pos;uniform vec2 u_dimension;uniform float u_zoom;uniform vec4 u_unpack;float getElevation(vec2 coord,float bias) {vec4 data=texture2D(u_image,coord)*255.0;data.a=-1.0;return dot(data,u_unpack)/4.0;}void main() {vec2 epsilon=1.0/u_dimension;float a=getElevation(v_pos+vec2(-epsilon.x,-epsilon.y),0.0);float b=getElevation(v_pos+vec2(0,-epsilon.y),0.0);float c=getElevation(v_pos+vec2(epsilon.x,-epsilon.y),0.0);float d=getElevation(v_pos+vec2(-epsilon.x,0),0.0);float e=getElevation(v_pos,0.0);float f=getElevation(v_pos+vec2(epsilon.x,0),0.0);float g=getElevation(v_pos+vec2(-epsilon.x,epsilon.y),0.0);float h=getElevation(v_pos+vec2(0,epsilon.y),0.0);float i=getElevation(v_pos+vec2(epsilon.x,epsilon.y),0.0);float exaggerationFactor=u_zoom < 2.0 ? 0.4 : u_zoom < 4.5 ? 0.35 : 0.3;float exaggeration=u_zoom < 15.0 ? (u_zoom-15.0)*exaggerationFactor : 0.0;vec2 deriv=vec2((c+f+f+i)-(a+d+d+g),(g+h+h+i)-(a+b+b+c))/pow(2.0,exaggeration+(19.2562-u_zoom));gl_FragColor=clamp(vec4(deriv.x/2.0+0.5,deriv.y/2.0+0.5,1.0,1.0),0.0,1.0);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_dimension;attribute vec2 a_pos;attribute vec2 a_texture_pos;varying vec2 v_pos;void main() {gl_Position=u_matrix*vec4(a_pos,0,1);highp vec2 epsilon=1.0/u_dimension;float scale=(u_dimension.x-2.0)/u_dimension.x;v_pos=(a_texture_pos/8192.0)*scale+epsilon;}"),hillshade:me("uniform sampler2D u_image;varying vec2 v_pos;uniform vec2 u_latrange;uniform vec2 u_light;uniform vec4 u_shadow;uniform vec4 u_highlight;uniform vec4 u_accent;\n#define PI 3.141592653589793\nvoid main() {vec4 pixel=texture2D(u_image,v_pos);vec2 deriv=((pixel.rg*2.0)-1.0);float scaleFactor=cos(radians((u_latrange[0]-u_latrange[1])*(1.0-v_pos.y)+u_latrange[1]));float slope=atan(1.25*length(deriv)/scaleFactor);float aspect=deriv.x !=0.0 ? atan(deriv.y,-deriv.x) : PI/2.0*(deriv.y > 0.0 ? 1.0 :-1.0);float intensity=u_light.x;float azimuth=u_light.y+PI;float base=1.875-intensity*1.75;float maxValue=0.5*PI;float scaledSlope=intensity !=0.5 ? ((pow(base,slope)-1.0)/(pow(base,maxValue)-1.0))*maxValue : slope;float accent=cos(scaledSlope);vec4 accent_color=(1.0-accent)*u_accent*clamp(intensity*2.0,0.0,1.0);float shade=abs(mod((aspect+azimuth)/PI+0.5,2.0)-1.0);vec4 shade_color=mix(u_shadow,u_highlight,shade)*sin(scaledSlope)*clamp(intensity*2.0,0.0,1.0);gl_FragColor=accent_color*(1.0-shade_color.a)+shade_color;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;attribute vec2 a_pos;attribute vec2 a_texture_pos;varying vec2 v_pos;void main() {gl_Position=u_matrix*vec4(a_pos,0,1);v_pos=a_texture_pos/8192.0;}"),line:me("uniform lowp float u_device_pixel_ratio;varying vec2 v_width2;varying vec2 v_normal;varying float v_gamma_scale;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);gl_FragColor=color*(alpha*opacity);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform mat4 u_matrix;uniform mediump float u_ratio;uniform vec2 u_units_to_pixels;uniform lowp float u_device_pixel_ratio;varying vec2 v_normal;varying vec2 v_width2;varying float v_gamma_scale;varying highp float v_linesofar;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float width\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float width\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;v_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*2.0;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);vec4 projected_extrude=u_matrix*vec4(dist/u_ratio,0.0,0.0);gl_Position=u_matrix*vec4(pos+offset2/u_ratio,0.0,1.0)+projected_extrude;\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length(projected_extrude.xy/gl_Position.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_width2=vec2(outset,inset);}"),lineGradient:me("uniform lowp float u_device_pixel_ratio;uniform sampler2D u_image;varying vec2 v_width2;varying vec2 v_normal;varying float v_gamma_scale;varying highp vec2 v_uv;\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);vec4 color=texture2D(u_image,v_uv);gl_FragColor=color*(alpha*opacity);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\nattribute vec2 a_pos_normal;attribute vec4 a_data;attribute float a_uv_x;attribute float a_split_index;uniform mat4 u_matrix;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;uniform vec2 u_units_to_pixels;uniform float u_image_height;varying vec2 v_normal;varying vec2 v_width2;varying float v_gamma_scale;varying highp vec2 v_uv;\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float width\nvoid main() {\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float width\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;highp float texel_height=1.0/u_image_height;highp float half_texel_height=0.5*texel_height;v_uv=vec2(a_uv_x,a_split_index*texel_height-half_texel_height);vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);vec4 projected_extrude=u_matrix*vec4(dist/u_ratio,0.0,0.0);gl_Position=u_matrix*vec4(pos+offset2/u_ratio,0.0,1.0)+projected_extrude;\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length(projected_extrude.xy/gl_Position.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_width2=vec2(outset,inset);}"),linePattern:me("#ifdef GL_ES\nprecision highp float;\n#endif\nuniform lowp float u_device_pixel_ratio;uniform vec2 u_texsize;uniform float u_fade;uniform mediump vec3 u_scale;uniform sampler2D u_image;varying vec2 v_normal;varying vec2 v_width2;varying float v_linesofar;varying float v_gamma_scale;varying float v_width;\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\nvec2 pattern_tl_a=pattern_from.xy;vec2 pattern_br_a=pattern_from.zw;vec2 pattern_tl_b=pattern_to.xy;vec2 pattern_br_b=pattern_to.zw;float tileZoomRatio=u_scale.x;float fromScale=u_scale.y;float toScale=u_scale.z;vec2 display_size_a=(pattern_br_a-pattern_tl_a)/pixel_ratio_from;vec2 display_size_b=(pattern_br_b-pattern_tl_b)/pixel_ratio_to;vec2 pattern_size_a=vec2(display_size_a.x*fromScale/tileZoomRatio,display_size_a.y);vec2 pattern_size_b=vec2(display_size_b.x*toScale/tileZoomRatio,display_size_b.y);float aspect_a=display_size_a.y/v_width;float aspect_b=display_size_b.y/v_width;float dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);float x_a=mod(v_linesofar/pattern_size_a.x*aspect_a,1.0);float x_b=mod(v_linesofar/pattern_size_b.x*aspect_b,1.0);float y=0.5*v_normal.y+0.5;vec2 texel_size=1.0/u_texsize;vec2 pos_a=mix(pattern_tl_a*texel_size-texel_size,pattern_br_a*texel_size+texel_size,vec2(x_a,y));vec2 pos_b=mix(pattern_tl_b*texel_size-texel_size,pattern_br_b*texel_size+texel_size,vec2(x_b,y));vec4 color=mix(texture2D(u_image,pos_a),texture2D(u_image,pos_b),u_fade);gl_FragColor=color*alpha*opacity;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\n#define LINE_DISTANCE_SCALE 2.0\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform mat4 u_matrix;uniform vec2 u_units_to_pixels;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;varying vec2 v_normal;varying vec2 v_width2;varying float v_linesofar;varying float v_gamma_scale;varying float v_width;\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define mediump float width\n#pragma mapbox: define lowp float floorwidth\n#pragma mapbox: define lowp vec4 pattern_from\n#pragma mapbox: define lowp vec4 pattern_to\n#pragma mapbox: define lowp float pixel_ratio_from\n#pragma mapbox: define lowp float pixel_ratio_to\nvoid main() {\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize mediump float width\n#pragma mapbox: initialize lowp float floorwidth\n#pragma mapbox: initialize mediump vec4 pattern_from\n#pragma mapbox: initialize mediump vec4 pattern_to\n#pragma mapbox: initialize lowp float pixel_ratio_from\n#pragma mapbox: initialize lowp float pixel_ratio_to\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;float a_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*LINE_DISTANCE_SCALE;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);vec4 projected_extrude=u_matrix*vec4(dist/u_ratio,0.0,0.0);gl_Position=u_matrix*vec4(pos+offset2/u_ratio,0.0,1.0)+projected_extrude;\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length(projected_extrude.xy/gl_Position.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_linesofar=a_linesofar;v_width2=vec2(outset,inset);v_width=floorwidth;}"),lineSDF:me("uniform lowp float u_device_pixel_ratio;uniform sampler2D u_image;uniform float u_sdfgamma;uniform float u_mix;varying vec2 v_normal;varying vec2 v_width2;varying vec2 v_tex_a;varying vec2 v_tex_b;varying float v_gamma_scale;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float width\n#pragma mapbox: define lowp float floorwidth\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float width\n#pragma mapbox: initialize lowp float floorwidth\nfloat dist=length(v_normal)*v_width2.s;float blur2=(blur+1.0/u_device_pixel_ratio)*v_gamma_scale;float alpha=clamp(min(dist-(v_width2.t-blur2),v_width2.s-dist)/blur2,0.0,1.0);float sdfdist_a=texture2D(u_image,v_tex_a).a;float sdfdist_b=texture2D(u_image,v_tex_b).a;float sdfdist=mix(sdfdist_a,sdfdist_b,u_mix);alpha*=smoothstep(0.5-u_sdfgamma/floorwidth,0.5+u_sdfgamma/floorwidth,sdfdist);gl_FragColor=color*(alpha*opacity);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","\n#define scale 0.015873016\n#define LINE_DISTANCE_SCALE 2.0\nattribute vec2 a_pos_normal;attribute vec4 a_data;uniform mat4 u_matrix;uniform mediump float u_ratio;uniform lowp float u_device_pixel_ratio;uniform vec2 u_patternscale_a;uniform float u_tex_y_a;uniform vec2 u_patternscale_b;uniform float u_tex_y_b;uniform vec2 u_units_to_pixels;varying vec2 v_normal;varying vec2 v_width2;varying vec2 v_tex_a;varying vec2 v_tex_b;varying float v_gamma_scale;\n#pragma mapbox: define highp vec4 color\n#pragma mapbox: define lowp float blur\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define mediump float gapwidth\n#pragma mapbox: define lowp float offset\n#pragma mapbox: define mediump float width\n#pragma mapbox: define lowp float floorwidth\nvoid main() {\n#pragma mapbox: initialize highp vec4 color\n#pragma mapbox: initialize lowp float blur\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize mediump float gapwidth\n#pragma mapbox: initialize lowp float offset\n#pragma mapbox: initialize mediump float width\n#pragma mapbox: initialize lowp float floorwidth\nfloat ANTIALIASING=1.0/u_device_pixel_ratio/2.0;vec2 a_extrude=a_data.xy-128.0;float a_direction=mod(a_data.z,4.0)-1.0;float a_linesofar=(floor(a_data.z/4.0)+a_data.w*64.0)*LINE_DISTANCE_SCALE;vec2 pos=floor(a_pos_normal*0.5);mediump vec2 normal=a_pos_normal-2.0*pos;normal.y=normal.y*2.0-1.0;v_normal=normal;gapwidth=gapwidth/2.0;float halfwidth=width/2.0;offset=-1.0*offset;float inset=gapwidth+(gapwidth > 0.0 ? ANTIALIASING : 0.0);float outset=gapwidth+halfwidth*(gapwidth > 0.0 ? 2.0 : 1.0)+(halfwidth==0.0 ? 0.0 : ANTIALIASING);mediump vec2 dist=outset*a_extrude*scale;mediump float u=0.5*a_direction;mediump float t=1.0-abs(u);mediump vec2 offset2=offset*a_extrude*scale*normal.y*mat2(t,-u,u,t);vec4 projected_extrude=u_matrix*vec4(dist/u_ratio,0.0,0.0);gl_Position=u_matrix*vec4(pos+offset2/u_ratio,0.0,1.0)+projected_extrude;\n#ifdef TERRAIN3D\nv_gamma_scale=1.0;\n#else\nfloat extrude_length_without_perspective=length(dist);float extrude_length_with_perspective=length(projected_extrude.xy/gl_Position.w*u_units_to_pixels);v_gamma_scale=extrude_length_without_perspective/extrude_length_with_perspective;\n#endif\nv_tex_a=vec2(a_linesofar*u_patternscale_a.x/floorwidth,normal.y*u_patternscale_a.y+u_tex_y_a);v_tex_b=vec2(a_linesofar*u_patternscale_b.x/floorwidth,normal.y*u_patternscale_b.y+u_tex_y_b);v_width2=vec2(outset,inset);}"),raster:me("uniform float u_fade_t;uniform float u_opacity;uniform sampler2D u_image0;uniform sampler2D u_image1;varying vec2 v_pos0;varying vec2 v_pos1;uniform float u_brightness_low;uniform float u_brightness_high;uniform float u_saturation_factor;uniform float u_contrast_factor;uniform vec3 u_spin_weights;void main() {vec4 color0=texture2D(u_image0,v_pos0);vec4 color1=texture2D(u_image1,v_pos1);if (color0.a > 0.0) {color0.rgb=color0.rgb/color0.a;}if (color1.a > 0.0) {color1.rgb=color1.rgb/color1.a;}vec4 color=mix(color0,color1,u_fade_t);color.a*=u_opacity;vec3 rgb=color.rgb;rgb=vec3(dot(rgb,u_spin_weights.xyz),dot(rgb,u_spin_weights.zxy),dot(rgb,u_spin_weights.yzx));float average=(color.r+color.g+color.b)/3.0;rgb+=(average-rgb)*u_saturation_factor;rgb=(rgb-0.5)*u_contrast_factor+0.5;vec3 u_high_vec=vec3(u_brightness_low,u_brightness_low,u_brightness_low);vec3 u_low_vec=vec3(u_brightness_high,u_brightness_high,u_brightness_high);gl_FragColor=vec4(mix(u_high_vec,u_low_vec,rgb)*color.a,color.a);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","uniform mat4 u_matrix;uniform vec2 u_tl_parent;uniform float u_scale_parent;uniform float u_buffer_scale;attribute vec2 a_pos;attribute vec2 a_texture_pos;varying vec2 v_pos0;varying vec2 v_pos1;void main() {gl_Position=u_matrix*vec4(a_pos,0,1);v_pos0=(((a_texture_pos/8192.0)-0.5)/u_buffer_scale )+0.5;v_pos1=(v_pos0*u_scale_parent)+u_tl_parent;}"),symbolIcon:me("uniform sampler2D u_texture;varying vec2 v_tex;varying float v_fade_opacity;\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\nlowp float alpha=opacity*v_fade_opacity;gl_FragColor=texture2D(u_texture,v_tex)*alpha;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec4 a_pixeloffset;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform highp float u_camera_to_center_distance;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform float u_fade_change;uniform mat4 u_matrix;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform vec2 u_texsize;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec2 v_tex;varying float v_fade_opacity;vec4 projectTileWithElevation(vec2 posInTile,float elevation) {return u_matrix*vec4(posInTile,elevation,1.0);}\n#pragma mapbox: define lowp float opacity\nvoid main() {\n#pragma mapbox: initialize lowp float opacity\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);vec2 a_pxoffset=a_pixeloffset.xy;vec2 a_minFontScale=a_pixeloffset.zw/256.0;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\ncamera_to_anchor_distance/u_camera_to_center_distance :\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=u_is_text ? size/24.0 : size;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;vec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*max(a_minFontScale,fontScale)+a_pxoffset/16.0)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}gl_Position=finalPos;v_tex=a_tex/u_texsize;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float visibility=calculate_visibility(projectedPoint);v_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));}"),symbolSDF:me("#define SDF_PX 8.0\nuniform bool u_is_halo;uniform sampler2D u_texture;uniform highp float u_gamma_scale;uniform lowp float u_device_pixel_ratio;uniform bool u_is_text;varying vec2 v_data0;varying vec3 v_data1;\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nfloat EDGE_GAMMA=0.105/u_device_pixel_ratio;vec2 tex=v_data0.xy;float gamma_scale=v_data1.x;float size=v_data1.y;float fade_opacity=v_data1[2];float fontScale=u_is_text ? size/24.0 : size;lowp vec4 color=fill_color;highp float gamma=EDGE_GAMMA/(fontScale*u_gamma_scale);lowp float inner_edge=(256.0-64.0)/256.0;if (u_is_halo) {color=halo_color;gamma=(halo_blur*1.19/SDF_PX+EDGE_GAMMA)/(fontScale*u_gamma_scale);inner_edge=inner_edge+gamma*gamma_scale;}lowp float dist=texture2D(u_texture,tex).a;highp float gamma_scaled=gamma*gamma_scale;highp float alpha=smoothstep(inner_edge-gamma_scaled,inner_edge+gamma_scaled,dist);if (u_is_halo) {lowp float halo_edge=(6.0-halo_width/fontScale)/SDF_PX;alpha=min(smoothstep(halo_edge-gamma_scaled,halo_edge+gamma_scaled,dist),1.0-alpha);}gl_FragColor=color*(alpha*opacity*fade_opacity);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec4 a_pixeloffset;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform mat4 u_matrix;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform highp float u_camera_to_center_distance;uniform float u_fade_change;uniform vec2 u_texsize;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec2 v_data0;varying vec3 v_data1;vec4 projectTileWithElevation(vec2 posInTile,float elevation) {return u_matrix*vec4(posInTile,elevation,1.0);}\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);vec2 a_pxoffset=a_pixeloffset.xy;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\ncamera_to_anchor_distance/u_camera_to_center_distance :\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=u_is_text ? size/24.0 : size;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;vec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*fontScale+a_pxoffset)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}float gamma_scale=finalPos.w;gl_Position=finalPos;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float visibility=calculate_visibility(projectedPoint);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float interpolated_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));v_data0=a_tex/u_texsize;v_data1=vec3(gamma_scale,size,interpolated_fade_opacity);}"),symbolTextAndIcon:me("#define SDF_PX 8.0\n#define SDF 1.0\n#define ICON 0.0\nuniform bool u_is_halo;uniform sampler2D u_texture;uniform sampler2D u_texture_icon;uniform highp float u_gamma_scale;uniform lowp float u_device_pixel_ratio;varying vec4 v_data0;varying vec4 v_data1;\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nfloat fade_opacity=v_data1[2];if (v_data1.w==ICON) {vec2 tex_icon=v_data0.zw;lowp float alpha=opacity*fade_opacity;gl_FragColor=texture2D(u_texture_icon,tex_icon)*alpha;\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\nreturn;}vec2 tex=v_data0.xy;float EDGE_GAMMA=0.105/u_device_pixel_ratio;float gamma_scale=v_data1.x;float size=v_data1.y;float fontScale=size/24.0;lowp vec4 color=fill_color;highp float gamma=EDGE_GAMMA/(fontScale*u_gamma_scale);lowp float buff=(256.0-64.0)/256.0;if (u_is_halo) {color=halo_color;gamma=(halo_blur*1.19/SDF_PX+EDGE_GAMMA)/(fontScale*u_gamma_scale);buff=(6.0-halo_width/fontScale)/SDF_PX;}lowp float dist=texture2D(u_texture,tex).a;highp float gamma_scaled=gamma*gamma_scale;highp float alpha=smoothstep(buff-gamma_scaled,buff+gamma_scaled,dist);gl_FragColor=color*(alpha*opacity*fade_opacity);\n#ifdef OVERDRAW_INSPECTOR\ngl_FragColor=vec4(1.0);\n#endif\n}","attribute vec4 a_pos_offset;attribute vec4 a_data;attribute vec3 a_projected_pos;attribute float a_fade_opacity;uniform bool u_is_size_zoom_constant;uniform bool u_is_size_feature_constant;uniform highp float u_size_t;uniform highp float u_size;uniform mat4 u_matrix;uniform mat4 u_label_plane_matrix;uniform mat4 u_coord_matrix;uniform bool u_is_text;uniform bool u_pitch_with_map;uniform highp float u_pitch;uniform bool u_rotate_symbol;uniform highp float u_aspect_ratio;uniform highp float u_camera_to_center_distance;uniform float u_fade_change;uniform vec2 u_texsize;uniform vec2 u_texsize_icon;uniform bool u_is_along_line;uniform bool u_is_variable_anchor;uniform vec2 u_translation;uniform float u_pitched_scale;varying vec4 v_data0;varying vec4 v_data1;vec4 projectTileWithElevation(vec2 posInTile,float elevation) {return u_matrix*vec4(posInTile,elevation,1.0);}\n#pragma mapbox: define highp vec4 fill_color\n#pragma mapbox: define highp vec4 halo_color\n#pragma mapbox: define lowp float opacity\n#pragma mapbox: define lowp float halo_width\n#pragma mapbox: define lowp float halo_blur\nvoid main() {\n#pragma mapbox: initialize highp vec4 fill_color\n#pragma mapbox: initialize highp vec4 halo_color\n#pragma mapbox: initialize lowp float opacity\n#pragma mapbox: initialize lowp float halo_width\n#pragma mapbox: initialize lowp float halo_blur\nvec2 a_pos=a_pos_offset.xy;vec2 a_offset=a_pos_offset.zw;vec2 a_tex=a_data.xy;vec2 a_size=a_data.zw;float a_size_min=floor(a_size[0]*0.5);float is_sdf=a_size[0]-2.0*a_size_min;float ele=get_elevation(a_pos);highp float segment_angle=-a_projected_pos[2];float size;if (!u_is_size_zoom_constant && !u_is_size_feature_constant) {size=mix(a_size_min,a_size[1],u_size_t)/128.0;} else if (u_is_size_zoom_constant && !u_is_size_feature_constant) {size=a_size_min/128.0;} else {size=u_size;}vec2 translated_a_pos=a_pos+u_translation;vec4 projectedPoint=projectTileWithElevation(translated_a_pos,ele);highp float camera_to_anchor_distance=projectedPoint.w;highp float distance_ratio=u_pitch_with_map ?\ncamera_to_anchor_distance/u_camera_to_center_distance :\nu_camera_to_center_distance/camera_to_anchor_distance;highp float perspective_ratio=clamp(0.5+0.5*distance_ratio,0.0,4.0);size*=perspective_ratio;float fontScale=size/24.0;highp float symbol_rotation=0.0;if (u_rotate_symbol) {vec4 offsetProjectedPoint=projectTileWithElevation(translated_a_pos+vec2(1,0),ele);vec2 a=projectedPoint.xy/projectedPoint.w;vec2 b=offsetProjectedPoint.xy/offsetProjectedPoint.w;symbol_rotation=atan((b.y-a.y)/u_aspect_ratio,b.x-a.x);}highp float angle_sin=sin(segment_angle+symbol_rotation);highp float angle_cos=cos(segment_angle+symbol_rotation);mat2 rotation_matrix=mat2(angle_cos,-1.0*angle_sin,angle_sin,angle_cos);vec4 projected_pos;if (u_is_along_line || u_is_variable_anchor) {projected_pos=vec4(a_projected_pos.xy,ele,1.0);} else if (u_pitch_with_map) {projected_pos=u_label_plane_matrix*vec4(a_projected_pos.xy+u_translation,ele,1.0);} else {projected_pos=u_label_plane_matrix*projectTileWithElevation(a_projected_pos.xy+u_translation,ele);}float z=float(u_pitch_with_map)*projected_pos.z/projected_pos.w;float projectionScaling=1.0;vec4 finalPos=u_coord_matrix*vec4(projected_pos.xy/projected_pos.w+rotation_matrix*(a_offset/32.0*fontScale)*projectionScaling,z,1.0);if(u_pitch_with_map) {finalPos=projectTileWithElevation(finalPos.xy,finalPos.z);}float gamma_scale=finalPos.w;gl_Position=finalPos;vec2 fade_opacity=unpack_opacity(a_fade_opacity);float visibility=calculate_visibility(projectedPoint);float fade_change=fade_opacity[1] > 0.5 ? u_fade_change :-u_fade_change;float interpolated_fade_opacity=max(0.0,min(visibility,fade_opacity[0]+fade_change));v_data0.xy=a_tex/u_texsize;v_data0.zw=a_tex/u_texsize_icon;v_data1=vec4(gamma_scale,size,interpolated_fade_opacity,is_sdf);}"),terrain:me("uniform sampler2D u_texture;uniform vec4 u_fog_color;uniform vec4 u_horizon_color;uniform float u_fog_ground_blend;uniform float u_fog_ground_blend_opacity;uniform float u_horizon_fog_blend;varying vec2 v_texture_pos;varying float v_fog_depth;const float gamma=2.2;vec4 gammaToLinear(vec4 color) {return pow(color,vec4(gamma));}vec4 linearToGamma(vec4 color) {return pow(color,vec4(1.0/gamma));}void main() {vec4 surface_color=texture2D(u_texture,v_texture_pos);if (v_fog_depth > u_fog_ground_blend) {vec4 surface_color_linear=gammaToLinear(surface_color);float blend_color=smoothstep(0.0,1.0,max((v_fog_depth-u_horizon_fog_blend)/(1.0-u_horizon_fog_blend),0.0));vec4 fog_horizon_color_linear=mix(gammaToLinear(u_fog_color),gammaToLinear(u_horizon_color),blend_color);float factor_fog=max(v_fog_depth-u_fog_ground_blend,0.0)/(1.0-u_fog_ground_blend);gl_FragColor=linearToGamma(mix(surface_color_linear,fog_horizon_color_linear,pow(factor_fog,2.0)*u_fog_ground_blend_opacity));} else {gl_FragColor=surface_color;}}","attribute vec3 a_pos3d;uniform mat4 u_matrix;uniform mat4 u_fog_matrix;uniform float u_ele_delta;varying vec2 v_texture_pos;varying float v_fog_depth;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;v_texture_pos=a_pos3d.xy/8192.0;gl_Position=u_matrix*vec4(a_pos3d.xy,ele-ele_delta,1.0);vec4 pos=u_fog_matrix*vec4(a_pos3d.xy,ele,1.0);v_fog_depth=pos.z/pos.w*0.5+0.5;}"),terrainDepth:me("varying float v_depth;const highp vec4 bitSh=vec4(256.*256.*256.,256.*256.,256.,1.);const highp vec4 bitMsk=vec4(0.,vec3(1./256.0));highp vec4 pack(highp float value) {highp vec4 comp=fract(value*bitSh);comp-=comp.xxyz*bitMsk;return comp;}void main() {gl_FragColor=pack(v_depth);}","attribute vec3 a_pos3d;uniform mat4 u_matrix;uniform float u_ele_delta;varying float v_depth;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;gl_Position=u_matrix*vec4(a_pos3d.xy,ele-ele_delta,1.0);v_depth=gl_Position.z/gl_Position.w;}"),terrainCoords:me("precision mediump float;uniform sampler2D u_texture;uniform float u_terrain_coords_id;varying vec2 v_texture_pos;void main() {vec4 rgba=texture2D(u_texture,v_texture_pos);gl_FragColor=vec4(rgba.r,rgba.g,rgba.b,u_terrain_coords_id);}","attribute vec3 a_pos3d;uniform mat4 u_matrix;uniform float u_ele_delta;varying vec2 v_texture_pos;void main() {float ele=get_elevation(a_pos3d.xy);float ele_delta=a_pos3d.z==1.0 ? u_ele_delta : 0.0;v_texture_pos=a_pos3d.xy/8192.0;gl_Position=u_matrix*vec4(a_pos3d.xy,ele-ele_delta,1.0);}"),sky:me("uniform vec4 u_sky_color;uniform vec4 u_horizon_color;uniform float u_horizon;uniform float u_sky_horizon_blend;void main() {float y=gl_FragCoord.y;if (y > u_horizon) {float blend=y-u_horizon;if (blend < u_sky_horizon_blend) {gl_FragColor=mix(u_sky_color,u_horizon_color,pow(1.0-blend/u_sky_horizon_blend,2.0));} else {gl_FragColor=u_sky_color;}}}","attribute vec2 a_pos;void main() {gl_Position=vec4(a_pos,1.0,1.0);}")};function me(t,e){const i=/#pragma mapbox: ([\w]+) ([\w]+) ([\w]+) ([\w]+)/g,a=e.match(/attribute ([\w]+) ([\w]+)/g),s=t.match(/uniform ([\w]+) ([\w]+)([\s]*)([\w]*)/g),o=e.match(/uniform ([\w]+) ([\w]+)([\s]*)([\w]*)/g),r=o?o.concat(s):s,n={};return {fragmentSource:t=t.replace(i,((t,e,i,a,s)=>(n[s]=!0,"define"===e?`\n#ifndef HAS_UNIFORM_u_${s}\nvarying ${i} ${a} ${s};\n#else\nuniform ${i} ${a} u_${s};\n#endif\n`:`\n#ifdef HAS_UNIFORM_u_${s}\n    ${i} ${a} ${s} = u_${s};\n#endif\n`))),vertexSource:e=e.replace(i,((t,e,i,a,s)=>{const o="float"===a?"vec2":"vec4",r=s.match(/color/)?"color":o;return n[s]?"define"===e?`\n#ifndef HAS_UNIFORM_u_${s}\nuniform lowp float u_${s}_t;\nattribute ${i} ${o} a_${s};\nvarying ${i} ${a} ${s};\n#else\nuniform ${i} ${a} u_${s};\n#endif\n`:"vec4"===r?`\n#ifndef HAS_UNIFORM_u_${s}\n    ${s} = a_${s};\n#else\n    ${i} ${a} ${s} = u_${s};\n#endif\n`:`\n#ifndef HAS_UNIFORM_u_${s}\n    ${s} = unpack_mix_${r}(a_${s}, u_${s}_t);\n#else\n    ${i} ${a} ${s} = u_${s};\n#endif\n`:"define"===e?`\n#ifndef HAS_UNIFORM_u_${s}\nuniform lowp float u_${s}_t;\nattribute ${i} ${o} a_${s};\n#else\nuniform ${i} ${a} u_${s};\n#endif\n`:"vec4"===r?`\n#ifndef HAS_UNIFORM_u_${s}\n    ${i} ${a} ${s} = a_${s};\n#else\n    ${i} ${a} ${s} = u_${s};\n#endif\n`:`\n#ifndef HAS_UNIFORM_u_${s}\n    ${i} ${a} ${s} = unpack_mix_${r}(a_${s}, u_${s}_t);\n#else\n    ${i} ${a} ${s} = u_${s};\n#endif\n`})),staticAttributes:a,staticUniforms:r}}class fe{constructor(){this.boundProgram=null,this.boundLayoutVertexBuffer=null,this.boundPaintVertexBuffers=[],this.boundIndexBuffer=null,this.boundVertexOffset=null,this.boundDynamicVertexBuffer=null,this.vao=null;}bind(t,e,i,a,s,o,r,n,l){this.context=t;let h=this.boundPaintVertexBuffers.length!==a.length;for(let t=0;!h&&t<a.length;t++)this.boundPaintVertexBuffers[t]!==a[t]&&(h=!0);!this.vao||this.boundProgram!==e||this.boundLayoutVertexBuffer!==i||h||this.boundIndexBuffer!==s||this.boundVertexOffset!==o||this.boundDynamicVertexBuffer!==r||this.boundDynamicVertexBuffer2!==n||this.boundDynamicVertexBuffer3!==l?this.freshBind(e,i,a,s,o,r,n,l):(t.bindVertexArray.set(this.vao),r&&r.bind(),s&&s.dynamicDraw&&s.bind(),n&&n.bind(),l&&l.bind());}freshBind(t,e,i,a,s,o,r,n){const l=t.numAttributes,h=this.context,c=h.gl;this.vao&&this.destroy(),this.vao=h.createVertexArray(),h.bindVertexArray.set(this.vao),this.boundProgram=t,this.boundLayoutVertexBuffer=e,this.boundPaintVertexBuffers=i,this.boundIndexBuffer=a,this.boundVertexOffset=s,this.boundDynamicVertexBuffer=o,this.boundDynamicVertexBuffer2=r,this.boundDynamicVertexBuffer3=n,e.enableAttributes(c,t);for(const e of i)e.enableAttributes(c,t);o&&o.enableAttributes(c,t),r&&r.enableAttributes(c,t),n&&n.enableAttributes(c,t),e.bind(),e.setVertexAttribPointers(c,t,s);for(const e of i)e.bind(),e.setVertexAttribPointers(c,t,s);o&&(o.bind(),o.setVertexAttribPointers(c,t,s)),a&&a.bind(),r&&(r.bind(),r.setVertexAttribPointers(c,t,s)),n&&(n.bind(),n.setVertexAttribPointers(c,t,s)),h.currentNumAttributes=l;}destroy(){this.vao&&(this.context.deleteVertexArray(this.vao),this.vao=null);}}const ge=(t,i,a,s,o)=>({u_matrix:t,u_texture:0,u_ele_delta:i,u_fog_matrix:a,u_fog_color:s?s.properties.get("fog-color"):e.aM.white,u_fog_ground_blend:s?s.properties.get("fog-ground-blend"):1,u_fog_ground_blend_opacity:s?s.calculateFogBlendOpacity(o):0,u_horizon_color:s?s.properties.get("horizon-color"):e.aM.white,u_horizon_fog_blend:s?s.properties.get("horizon-fog-blend"):1});function ve(t){const e=[];for(let i=0;i<t.length;i++){if(null===t[i])continue;const a=t[i].split(" ");e.push(a.pop());}return e}class xe{constructor(t,i,a,s,o,r){const n=t.gl;this.program=n.createProgram();const l=ve(i.staticAttributes),h=a?a.getBinderAttributes():[],c=l.concat(h),u=pe.prelude.staticUniforms?ve(pe.prelude.staticUniforms):[],d=i.staticUniforms?ve(i.staticUniforms):[],_=a?a.getBinderUniforms():[],p=u.concat(d).concat(_),m=[];for(const t of p)m.indexOf(t)<0&&m.push(t);const f=a?a.defines():[];o&&f.push("#define OVERDRAW_INSPECTOR;"),r&&f.push("#define TERRAIN3D;");const g=f.concat(pe.prelude.fragmentSource,i.fragmentSource).join("\n"),v=f.concat(pe.prelude.vertexSource,i.vertexSource).join("\n"),x=n.createShader(n.FRAGMENT_SHADER);if(n.isContextLost())return void(this.failedToCreate=!0);if(n.shaderSource(x,g),n.compileShader(x),!n.getShaderParameter(x,n.COMPILE_STATUS))throw new Error(`Could not compile fragment shader: ${n.getShaderInfoLog(x)}`);n.attachShader(this.program,x);const y=n.createShader(n.VERTEX_SHADER);if(n.isContextLost())return void(this.failedToCreate=!0);if(n.shaderSource(y,v),n.compileShader(y),!n.getShaderParameter(y,n.COMPILE_STATUS))throw new Error(`Could not compile vertex shader: ${n.getShaderInfoLog(y)}`);n.attachShader(this.program,y),this.attributes={};const b={};this.numAttributes=c.length;for(let t=0;t<this.numAttributes;t++)c[t]&&(n.bindAttribLocation(this.program,t,c[t]),this.attributes[c[t]]=t);if(n.linkProgram(this.program),!n.getProgramParameter(this.program,n.LINK_STATUS))throw new Error(`Program failed to link: ${n.getProgramInfoLog(this.program)}`);n.deleteShader(y),n.deleteShader(x);for(let t=0;t<m.length;t++){const e=m[t];if(e&&!b[e]){const t=n.getUniformLocation(this.program,e);t&&(b[e]=t);}}this.fixedUniforms=s(t,b),this.terrainUniforms=((t,i)=>({u_depth:new e.aH(t,i.u_depth),u_terrain:new e.aH(t,i.u_terrain),u_terrain_dim:new e.aI(t,i.u_terrain_dim),u_terrain_matrix:new e.aJ(t,i.u_terrain_matrix),u_terrain_unpack:new e.aK(t,i.u_terrain_unpack),u_terrain_exaggeration:new e.aI(t,i.u_terrain_exaggeration)}))(t,b),this.binderUniforms=a?a.getUniforms(t,b):[];}draw(t,e,i,a,s,o,r,n,l,h,c,u,d,_,p,m,f,g){const v=t.gl;if(this.failedToCreate)return;if(t.program.set(this.program),t.setDepthMode(i),t.setStencilMode(a),t.setColorMode(s),t.setCullFace(o),n){t.activeTexture.set(v.TEXTURE2),v.bindTexture(v.TEXTURE_2D,n.depthTexture),t.activeTexture.set(v.TEXTURE3),v.bindTexture(v.TEXTURE_2D,n.texture);for(const t in this.terrainUniforms)this.terrainUniforms[t].set(n[t]);}for(const t in 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e.aJ(t,i.u_matrix),u_lightpos:new e.aN(t,i.u_lightpos),u_lightintensity:new e.aI(t,i.u_lightintensity),u_lightcolor:new e.aN(t,i.u_lightcolor),u_vertical_gradient:new e.aI(t,i.u_vertical_gradient),u_height_factor:new e.aI(t,i.u_height_factor),u_image:new e.aH(t,i.u_image),u_texsize:new e.aO(t,i.u_texsize),u_pixel_coord_upper:new e.aO(t,i.u_pixel_coord_upper),u_pixel_coord_lower:new e.aO(t,i.u_pixel_coord_lower),u_scale:new e.aN(t,i.u_scale),u_fade:new e.aI(t,i.u_fade),u_opacity:new e.aI(t,i.u_opacity)}),fill:(t,i)=>({u_matrix:new e.aJ(t,i.u_matrix)}),fillPattern:(t,i)=>({u_matrix:new e.aJ(t,i.u_matrix),u_image:new e.aH(t,i.u_image),u_texsize:new e.aO(t,i.u_texsize),u_pixel_coord_upper:new e.aO(t,i.u_pixel_coord_upper),u_pixel_coord_lower:new e.aO(t,i.u_pixel_coord_lower),u_scale:new e.aN(t,i.u_scale),u_fade:new e.aI(t,i.u_fade)}),fillOutline:(t,i)=>({u_matrix:new e.aJ(t,i.u_matrix),u_world:new e.aO(t,i.u_world)}),fillOutlinePattern:(t,i)=>({u_matrix:new e.aJ(t,i.u_matrix),u_world:new 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e.aH(t,i.u_rotate_symbol),u_aspect_ratio:new e.aI(t,i.u_aspect_ratio),u_fade_change:new e.aI(t,i.u_fade_change),u_matrix:new e.aJ(t,i.u_matrix),u_label_plane_matrix:new e.aJ(t,i.u_label_plane_matrix),u_coord_matrix:new e.aJ(t,i.u_coord_matrix),u_is_text:new e.aH(t,i.u_is_text),u_pitch_with_map:new e.aH(t,i.u_pitch_with_map),u_is_along_line:new e.aH(t,i.u_is_along_line),u_is_variable_anchor:new e.aH(t,i.u_is_variable_anchor),u_texsize:new e.aO(t,i.u_texsize),u_texture:new e.aH(t,i.u_texture),u_translation:new e.aO(t,i.u_translation),u_pitched_scale:new e.aI(t,i.u_pitched_scale)}),symbolSDF:(t,i)=>({u_is_size_zoom_constant:new e.aH(t,i.u_is_size_zoom_constant),u_is_size_feature_constant:new e.aH(t,i.u_is_size_feature_constant),u_size_t:new e.aI(t,i.u_size_t),u_size:new e.aI(t,i.u_size),u_camera_to_center_distance:new e.aI(t,i.u_camera_to_center_distance),u_pitch:new e.aI(t,i.u_pitch),u_rotate_symbol:new e.aH(t,i.u_rotate_symbol),u_aspect_ratio:new e.aI(t,i.u_aspect_ratio),u_fade_change:new e.aI(t,i.u_fade_change),u_matrix:new e.aJ(t,i.u_matrix),u_label_plane_matrix:new e.aJ(t,i.u_label_plane_matrix),u_coord_matrix:new e.aJ(t,i.u_coord_matrix),u_is_text:new e.aH(t,i.u_is_text),u_pitch_with_map:new e.aH(t,i.u_pitch_with_map),u_is_along_line:new e.aH(t,i.u_is_along_line),u_is_variable_anchor:new e.aH(t,i.u_is_variable_anchor),u_texsize:new e.aO(t,i.u_texsize),u_texture:new e.aH(t,i.u_texture),u_gamma_scale:new e.aI(t,i.u_gamma_scale),u_device_pixel_ratio:new e.aI(t,i.u_device_pixel_ratio),u_is_halo:new e.aH(t,i.u_is_halo),u_translation:new e.aO(t,i.u_translation),u_pitched_scale:new e.aI(t,i.u_pitched_scale)}),symbolTextAndIcon:(t,i)=>({u_is_size_zoom_constant:new e.aH(t,i.u_is_size_zoom_constant),u_is_size_feature_constant:new e.aH(t,i.u_is_size_feature_constant),u_size_t:new e.aI(t,i.u_size_t),u_size:new e.aI(t,i.u_size),u_camera_to_center_distance:new e.aI(t,i.u_camera_to_center_distance),u_pitch:new e.aI(t,i.u_pitch),u_rotate_symbol:new e.aH(t,i.u_rotate_symbol),u_aspect_ratio:new e.aI(t,i.u_aspect_ratio),u_fade_change:new e.aI(t,i.u_fade_change),u_matrix:new e.aJ(t,i.u_matrix),u_label_plane_matrix:new e.aJ(t,i.u_label_plane_matrix),u_coord_matrix:new e.aJ(t,i.u_coord_matrix),u_is_text:new e.aH(t,i.u_is_text),u_pitch_with_map:new e.aH(t,i.u_pitch_with_map),u_is_along_line:new e.aH(t,i.u_is_along_line),u_is_variable_anchor:new e.aH(t,i.u_is_variable_anchor),u_texsize:new e.aO(t,i.u_texsize),u_texsize_icon:new e.aO(t,i.u_texsize_icon),u_texture:new e.aH(t,i.u_texture),u_texture_icon:new e.aH(t,i.u_texture_icon),u_gamma_scale:new e.aI(t,i.u_gamma_scale),u_device_pixel_ratio:new e.aI(t,i.u_device_pixel_ratio),u_is_halo:new e.aH(t,i.u_is_halo),u_translation:new e.aO(t,i.u_translation),u_pitched_scale:new e.aI(t,i.u_pitched_scale)}),background:(t,i)=>({u_matrix:new e.aJ(t,i.u_matrix),u_opacity:new e.aI(t,i.u_opacity),u_color:new e.aL(t,i.u_color)}),backgroundPattern:(t,i)=>({u_matrix:new e.aJ(t,i.u_matrix),u_opacity:new e.aI(t,i.u_opacity),u_image:new e.aH(t,i.u_image),u_pattern_tl_a:new e.aO(t,i.u_pattern_tl_a),u_pattern_br_a:new e.aO(t,i.u_pattern_br_a),u_pattern_tl_b:new e.aO(t,i.u_pattern_tl_b),u_pattern_br_b:new e.aO(t,i.u_pattern_br_b),u_texsize:new e.aO(t,i.u_texsize),u_mix:new e.aI(t,i.u_mix),u_pattern_size_a:new e.aO(t,i.u_pattern_size_a),u_pattern_size_b:new e.aO(t,i.u_pattern_size_b),u_scale_a:new e.aI(t,i.u_scale_a),u_scale_b:new e.aI(t,i.u_scale_b),u_pixel_coord_upper:new e.aO(t,i.u_pixel_coord_upper),u_pixel_coord_lower:new e.aO(t,i.u_pixel_coord_lower),u_tile_units_to_pixels:new e.aI(t,i.u_tile_units_to_pixels)}),terrain:(t,i)=>({u_matrix:new e.aJ(t,i.u_matrix),u_texture:new e.aH(t,i.u_texture),u_ele_delta:new e.aI(t,i.u_ele_delta),u_fog_matrix:new e.aJ(t,i.u_fog_matrix),u_fog_color:new e.aL(t,i.u_fog_color),u_fog_ground_blend:new e.aI(t,i.u_fog_ground_blend),u_fog_ground_blend_opacity:new e.aI(t,i.u_fog_ground_blend_opacity),u_horizon_color:new e.aL(t,i.u_horizon_color),u_horizon_fog_blend:new e.aI(t,i.u_horizon_fog_blend)}),terrainDepth:(t,i)=>({u_matrix:new e.aJ(t,i.u_matrix),u_ele_delta:new e.aI(t,i.u_ele_delta)}),terrainCoords:(t,i)=>({u_matrix:new e.aJ(t,i.u_matrix),u_texture:new e.aH(t,i.u_texture),u_terrain_coords_id:new e.aI(t,i.u_terrain_coords_id),u_ele_delta:new e.aI(t,i.u_ele_delta)}),sky:(t,i)=>({u_sky_color:new e.aL(t,i.u_sky_color),u_horizon_color:new e.aL(t,i.u_horizon_color),u_horizon:new e.aI(t,i.u_horizon),u_sky_horizon_blend:new e.aI(t,i.u_sky_horizon_blend)})};class $e{constructor(t,e,i){this.context=t;const a=t.gl;this.buffer=a.createBuffer(),this.dynamicDraw=Boolean(i),this.context.unbindVAO(),t.bindElementBuffer.set(this.buffer),a.bufferData(a.ELEMENT_ARRAY_BUFFER,e.arrayBuffer,this.dynamicDraw?a.DYNAMIC_DRAW:a.STATIC_DRAW),this.dynamicDraw||delete e.arrayBuffer;}bind(){this.context.bindElementBuffer.set(this.buffer);}updateData(t){const e=this.context.gl;if(!this.dynamicDraw)throw new Error("Attempted to update data while not in dynamic mode.");this.context.unbindVAO(),this.bind(),e.bufferSubData(e.ELEMENT_ARRAY_BUFFER,0,t.arrayBuffer);}destroy(){this.buffer&&(this.context.gl.deleteBuffer(this.buffer),delete this.buffer);}}const Xe={Int8:"BYTE",Uint8:"UNSIGNED_BYTE",Int16:"SHORT",Uint16:"UNSIGNED_SHORT",Int32:"INT",Uint32:"UNSIGNED_INT",Float32:"FLOAT"};class Ke{constructor(t,e,i,a){this.length=e.length,this.attributes=i,this.itemSize=e.bytesPerElement,this.dynamicDraw=a,this.context=t;const s=t.gl;this.buffer=s.createBuffer(),t.bindVertexBuffer.set(this.buffer),s.bufferData(s.ARRAY_BUFFER,e.arrayBuffer,this.dynamicDraw?s.DYNAMIC_DRAW:s.STATIC_DRAW),this.dynamicDraw||delete e.arrayBuffer;}bind(){this.context.bindVertexBuffer.set(this.buffer);}updateData(t){if(t.length!==this.length)throw new Error(`Length of new data is ${t.length}, which doesn't match current length of ${this.length}`);const e=this.context.gl;this.bind(),e.bufferSubData(e.ARRAY_BUFFER,0,t.arrayBuffer);}enableAttributes(t,e){for(let i=0;i<this.attributes.length;i++){const a=e.attributes[this.attributes[i].name];void 0!==a&&t.enableVertexAttribArray(a);}}setVertexAttribPointers(t,e,i){for(let a=0;a<this.attributes.length;a++){const s=this.attributes[a],o=e.attributes[s.name];void 0!==o&&t.vertexAttribPointer(o,s.components,t[Xe[s.type]],!1,this.itemSize,s.offset+this.itemSize*(i||0));}}destroy(){this.buffer&&(this.context.gl.deleteBuffer(this.buffer),delete this.buffer);}}const Je=new WeakMap;function Ye(t){var e;if(Je.has(t))return Je.get(t);{const i=null===(e=t.getParameter(t.VERSION))||void 0===e?void 0:e.startsWith("WebGL 2.0");return Je.set(t,i),i}}class Qe{constructor(t){this.gl=t.gl,this.default=this.getDefault(),this.current=this.default,this.dirty=!1;}get(){return this.current}set(t){}getDefault(){return this.default}setDefault(){this.set(this.default);}}class ti extends Qe{getDefault(){return e.aM.transparent}set(t){const e=this.current;(t.r!==e.r||t.g!==e.g||t.b!==e.b||t.a!==e.a||this.dirty)&&(this.gl.clearColor(t.r,t.g,t.b,t.a),this.current=t,this.dirty=!1);}}class ei extends Qe{getDefault(){return 1}set(t){(t!==this.current||this.dirty)&&(this.gl.clearDepth(t),this.current=t,this.dirty=!1);}}class ii extends Qe{getDefault(){return 0}set(t){(t!==this.current||this.dirty)&&(this.gl.clearStencil(t),this.current=t,this.dirty=!1);}}class ai extends Qe{getDefault(){return [!0,!0,!0,!0]}set(t){const e=this.current;(t[0]!==e[0]||t[1]!==e[1]||t[2]!==e[2]||t[3]!==e[3]||this.dirty)&&(this.gl.colorMask(t[0],t[1],t[2],t[3]),this.current=t,this.dirty=!1);}}class si extends Qe{getDefault(){return !0}set(t){(t!==this.current||this.dirty)&&(this.gl.depthMask(t),this.current=t,this.dirty=!1);}}class oi extends Qe{getDefault(){return 255}set(t){(t!==this.current||this.dirty)&&(this.gl.stencilMask(t),this.current=t,this.dirty=!1);}}class ri extends Qe{getDefault(){return {func:this.gl.ALWAYS,ref:0,mask:255}}set(t){const e=this.current;(t.func!==e.func||t.ref!==e.ref||t.mask!==e.mask||this.dirty)&&(this.gl.stencilFunc(t.func,t.ref,t.mask),this.current=t,this.dirty=!1);}}class ni extends Qe{getDefault(){const t=this.gl;return [t.KEEP,t.KEEP,t.KEEP]}set(t){const e=this.current;(t[0]!==e[0]||t[1]!==e[1]||t[2]!==e[2]||this.dirty)&&(this.gl.stencilOp(t[0],t[1],t[2]),this.current=t,this.dirty=!1);}}class li extends Qe{getDefault(){return !1}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;t?e.enable(e.STENCIL_TEST):e.disable(e.STENCIL_TEST),this.current=t,this.dirty=!1;}}class hi extends Qe{getDefault(){return [0,1]}set(t){const e=this.current;(t[0]!==e[0]||t[1]!==e[1]||this.dirty)&&(this.gl.depthRange(t[0],t[1]),this.current=t,this.dirty=!1);}}class ci extends Qe{getDefault(){return !1}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;t?e.enable(e.DEPTH_TEST):e.disable(e.DEPTH_TEST),this.current=t,this.dirty=!1;}}class ui extends Qe{getDefault(){return this.gl.LESS}set(t){(t!==this.current||this.dirty)&&(this.gl.depthFunc(t),this.current=t,this.dirty=!1);}}class di extends Qe{getDefault(){return !1}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;t?e.enable(e.BLEND):e.disable(e.BLEND),this.current=t,this.dirty=!1;}}class _i extends Qe{getDefault(){const t=this.gl;return [t.ONE,t.ZERO]}set(t){const e=this.current;(t[0]!==e[0]||t[1]!==e[1]||this.dirty)&&(this.gl.blendFunc(t[0],t[1]),this.current=t,this.dirty=!1);}}class pi extends Qe{getDefault(){return e.aM.transparent}set(t){const e=this.current;(t.r!==e.r||t.g!==e.g||t.b!==e.b||t.a!==e.a||this.dirty)&&(this.gl.blendColor(t.r,t.g,t.b,t.a),this.current=t,this.dirty=!1);}}class mi extends Qe{getDefault(){return this.gl.FUNC_ADD}set(t){(t!==this.current||this.dirty)&&(this.gl.blendEquation(t),this.current=t,this.dirty=!1);}}class fi extends Qe{getDefault(){return !1}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;t?e.enable(e.CULL_FACE):e.disable(e.CULL_FACE),this.current=t,this.dirty=!1;}}class gi extends Qe{getDefault(){return this.gl.BACK}set(t){(t!==this.current||this.dirty)&&(this.gl.cullFace(t),this.current=t,this.dirty=!1);}}class vi extends Qe{getDefault(){return this.gl.CCW}set(t){(t!==this.current||this.dirty)&&(this.gl.frontFace(t),this.current=t,this.dirty=!1);}}class xi extends Qe{getDefault(){return null}set(t){(t!==this.current||this.dirty)&&(this.gl.useProgram(t),this.current=t,this.dirty=!1);}}class yi extends Qe{getDefault(){return this.gl.TEXTURE0}set(t){(t!==this.current||this.dirty)&&(this.gl.activeTexture(t),this.current=t,this.dirty=!1);}}class bi extends Qe{getDefault(){const t=this.gl;return [0,0,t.drawingBufferWidth,t.drawingBufferHeight]}set(t){const e=this.current;(t[0]!==e[0]||t[1]!==e[1]||t[2]!==e[2]||t[3]!==e[3]||this.dirty)&&(this.gl.viewport(t[0],t[1],t[2],t[3]),this.current=t,this.dirty=!1);}}class wi extends Qe{getDefault(){return null}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;e.bindFramebuffer(e.FRAMEBUFFER,t),this.current=t,this.dirty=!1;}}class Ti extends Qe{getDefault(){return null}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;e.bindRenderbuffer(e.RENDERBUFFER,t),this.current=t,this.dirty=!1;}}class Ii extends Qe{getDefault(){return null}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;e.bindTexture(e.TEXTURE_2D,t),this.current=t,this.dirty=!1;}}class Ei extends Qe{getDefault(){return null}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;e.bindBuffer(e.ARRAY_BUFFER,t),this.current=t,this.dirty=!1;}}class Pi extends Qe{getDefault(){return null}set(t){const e=this.gl;e.bindBuffer(e.ELEMENT_ARRAY_BUFFER,t),this.current=t,this.dirty=!1;}}class Ci extends Qe{getDefault(){return null}set(t){var e;if(t===this.current&&!this.dirty)return;const i=this.gl;Ye(i)?i.bindVertexArray(t):null===(e=i.getExtension("OES_vertex_array_object"))||void 0===e||e.bindVertexArrayOES(t),this.current=t,this.dirty=!1;}}class Si extends Qe{getDefault(){return 4}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;e.pixelStorei(e.UNPACK_ALIGNMENT,t),this.current=t,this.dirty=!1;}}class zi extends Qe{getDefault(){return !1}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;e.pixelStorei(e.UNPACK_PREMULTIPLY_ALPHA_WEBGL,t),this.current=t,this.dirty=!1;}}class Di extends Qe{getDefault(){return !1}set(t){if(t===this.current&&!this.dirty)return;const e=this.gl;e.pixelStorei(e.UNPACK_FLIP_Y_WEBGL,t),this.current=t,this.dirty=!1;}}class Mi extends Qe{constructor(t,e){super(t),this.context=t,this.parent=e;}getDefault(){return null}}class Ai extends Mi{setDirty(){this.dirty=!0;}set(t){if(t===this.current&&!this.dirty)return;this.context.bindFramebuffer.set(this.parent);const e=this.gl;e.framebufferTexture2D(e.FRAMEBUFFER,e.COLOR_ATTACHMENT0,e.TEXTURE_2D,t,0),this.current=t,this.dirty=!1;}}class Ri extends Mi{set(t){if(t===this.current&&!this.dirty)return;this.context.bindFramebuffer.set(this.parent);const e=this.gl;e.framebufferRenderbuffer(e.FRAMEBUFFER,e.DEPTH_ATTACHMENT,e.RENDERBUFFER,t),this.current=t,this.dirty=!1;}}class ki extends Mi{set(t){if(t===this.current&&!this.dirty)return;this.context.bindFramebuffer.set(this.parent);const e=this.gl;e.framebufferRenderbuffer(e.FRAMEBUFFER,e.DEPTH_STENCIL_ATTACHMENT,e.RENDERBUFFER,t),this.current=t,this.dirty=!1;}}class Li{constructor(t,e,i,a,s){this.context=t,this.width=e,this.height=i;const o=t.gl,r=this.framebuffer=o.createFramebuffer();if(this.colorAttachment=new Ai(t,r),a)this.depthAttachment=s?new ki(t,r):new Ri(t,r);else if(s)throw new Error("Stencil cannot be set without depth");if(o.checkFramebufferStatus(o.FRAMEBUFFER)!==o.FRAMEBUFFER_COMPLETE)throw new Error("Framebuffer is not complete")}destroy(){const t=this.context.gl,e=this.colorAttachment.get();if(e&&t.deleteTexture(e),this.depthAttachment){const e=this.depthAttachment.get();e&&t.deleteRenderbuffer(e);}t.deleteFramebuffer(this.framebuffer);}}class Fi{constructor(t,e,i){this.blendFunction=t,this.blendColor=e,this.mask=i;}}Fi.Replace=[1,0],Fi.disabled=new Fi(Fi.Replace,e.aM.transparent,[!1,!1,!1,!1]),Fi.unblended=new Fi(Fi.Replace,e.aM.transparent,[!0,!0,!0,!0]),Fi.alphaBlended=new Fi([1,771],e.aM.transparent,[!0,!0,!0,!0]);class Bi{constructor(t){var e,i;if(this.gl=t,this.clearColor=new ti(this),this.clearDepth=new ei(this),this.clearStencil=new ii(this),this.colorMask=new ai(this),this.depthMask=new si(this),this.stencilMask=new oi(this),this.stencilFunc=new ri(this),this.stencilOp=new ni(this),this.stencilTest=new li(this),this.depthRange=new hi(this),this.depthTest=new ci(this),this.depthFunc=new ui(this),this.blend=new di(this),this.blendFunc=new _i(this),this.blendColor=new pi(this),this.blendEquation=new mi(this),this.cullFace=new fi(this),this.cullFaceSide=new gi(this),this.frontFace=new vi(this),this.program=new xi(this),this.activeTexture=new yi(this),this.viewport=new bi(this),this.bindFramebuffer=new wi(this),this.bindRenderbuffer=new Ti(this),this.bindTexture=new Ii(this),this.bindVertexBuffer=new Ei(this),this.bindElementBuffer=new Pi(this),this.bindVertexArray=new Ci(this),this.pixelStoreUnpack=new Si(this),this.pixelStoreUnpackPremultiplyAlpha=new zi(this),this.pixelStoreUnpackFlipY=new Di(this),this.extTextureFilterAnisotropic=t.getExtension("EXT_texture_filter_anisotropic")||t.getExtension("MOZ_EXT_texture_filter_anisotropic")||t.getExtension("WEBKIT_EXT_texture_filter_anisotropic"),this.extTextureFilterAnisotropic&&(this.extTextureFilterAnisotropicMax=t.getParameter(this.extTextureFilterAnisotropic.MAX_TEXTURE_MAX_ANISOTROPY_EXT)),this.maxTextureSize=t.getParameter(t.MAX_TEXTURE_SIZE),Ye(t)){this.HALF_FLOAT=t.HALF_FLOAT;const a=t.getExtension("EXT_color_buffer_half_float");this.RGBA16F=null!==(e=t.RGBA16F)&&void 0!==e?e:null==a?void 0:a.RGBA16F_EXT,this.RGB16F=null!==(i=t.RGB16F)&&void 0!==i?i:null==a?void 0:a.RGB16F_EXT,t.getExtension("EXT_color_buffer_float");}else {t.getExtension("EXT_color_buffer_half_float"),t.getExtension("OES_texture_half_float_linear");const e=t.getExtension("OES_texture_half_float");this.HALF_FLOAT=null==e?void 0:e.HALF_FLOAT_OES;}}setDefault(){this.unbindVAO(),this.clearColor.setDefault(),this.clearDepth.setDefault(),this.clearStencil.setDefault(),this.colorMask.setDefault(),this.depthMask.setDefault(),this.stencilMask.setDefault(),this.stencilFunc.setDefault(),this.stencilOp.setDefault(),this.stencilTest.setDefault(),this.depthRange.setDefault(),this.depthTest.setDefault(),this.depthFunc.setDefault(),this.blend.setDefault(),this.blendFunc.setDefault(),this.blendColor.setDefault(),this.blendEquation.setDefault(),this.cullFace.setDefault(),this.cullFaceSide.setDefault(),this.frontFace.setDefault(),this.program.setDefault(),this.activeTexture.setDefault(),this.bindFramebuffer.setDefault(),this.pixelStoreUnpack.setDefault(),this.pixelStoreUnpackPremultiplyAlpha.setDefault(),this.pixelStoreUnpackFlipY.setDefault();}setDirty(){this.clearColor.dirty=!0,this.clearDepth.dirty=!0,this.clearStencil.dirty=!0,this.colorMask.dirty=!0,this.depthMask.dirty=!0,this.stencilMask.dirty=!0,this.stencilFunc.dirty=!0,this.stencilOp.dirty=!0,this.stencilTest.dirty=!0,this.depthRange.dirty=!0,this.depthTest.dirty=!0,this.depthFunc.dirty=!0,this.blend.dirty=!0,this.blendFunc.dirty=!0,this.blendColor.dirty=!0,this.blendEquation.dirty=!0,this.cullFace.dirty=!0,this.cullFaceSide.dirty=!0,this.frontFace.dirty=!0,this.program.dirty=!0,this.activeTexture.dirty=!0,this.viewport.dirty=!0,this.bindFramebuffer.dirty=!0,this.bindRenderbuffer.dirty=!0,this.bindTexture.dirty=!0,this.bindVertexBuffer.dirty=!0,this.bindElementBuffer.dirty=!0,this.bindVertexArray.dirty=!0,this.pixelStoreUnpack.dirty=!0,this.pixelStoreUnpackPremultiplyAlpha.dirty=!0,this.pixelStoreUnpackFlipY.dirty=!0;}createIndexBuffer(t,e){return new $e(this,t,e)}createVertexBuffer(t,e,i){return new Ke(this,t,e,i)}createRenderbuffer(t,e,i){const a=this.gl,s=a.createRenderbuffer();return this.bindRenderbuffer.set(s),a.renderbufferStorage(a.RENDERBUFFER,t,e,i),this.bindRenderbuffer.set(null),s}createFramebuffer(t,e,i,a){return new Li(this,t,e,i,a)}clear({color:t,depth:e,stencil:i}){const a=this.gl;let s=0;t&&(s|=a.COLOR_BUFFER_BIT,this.clearColor.set(t),this.colorMask.set([!0,!0,!0,!0])),void 0!==e&&(s|=a.DEPTH_BUFFER_BIT,this.depthRange.set([0,1]),this.clearDepth.set(e),this.depthMask.set(!0)),void 0!==i&&(s|=a.STENCIL_BUFFER_BIT,this.clearStencil.set(i),this.stencilMask.set(255)),a.clear(s);}setCullFace(t){!1===t.enable?this.cullFace.set(!1):(this.cullFace.set(!0),this.cullFaceSide.set(t.mode),this.frontFace.set(t.frontFace));}setDepthMode(t){t.func!==this.gl.ALWAYS||t.mask?(this.depthTest.set(!0),this.depthFunc.set(t.func),this.depthMask.set(t.mask),this.depthRange.set(t.range)):this.depthTest.set(!1);}setStencilMode(t){t.test.func!==this.gl.ALWAYS||t.mask?(this.stencilTest.set(!0),this.stencilMask.set(t.mask),this.stencilOp.set([t.fail,t.depthFail,t.pass]),this.stencilFunc.set({func:t.test.func,ref:t.ref,mask:t.test.mask})):this.stencilTest.set(!1);}setColorMode(t){e.aE(t.blendFunction,Fi.Replace)?this.blend.set(!1):(this.blend.set(!0),this.blendFunc.set(t.blendFunction),this.blendColor.set(t.blendColor)),this.colorMask.set(t.mask);}createVertexArray(){var t;return Ye(this.gl)?this.gl.createVertexArray():null===(t=this.gl.getExtension("OES_vertex_array_object"))||void 0===t?void 0:t.createVertexArrayOES()}deleteVertexArray(t){var e;return Ye(this.gl)?this.gl.deleteVertexArray(t):null===(e=this.gl.getExtension("OES_vertex_array_object"))||void 0===e?void 0:e.deleteVertexArrayOES(t)}unbindVAO(){this.bindVertexArray.set(null);}}class Oi{constructor(t,e,i){this.func=t,this.mask=e,this.range=i;}}Oi.ReadOnly=!1,Oi.ReadWrite=!0,Oi.disabled=new Oi(519,Oi.ReadOnly,[0,1]);const Ni=7680;class Ui{constructor(t,e,i,a,s,o){this.test=t,this.ref=e,this.mask=i,this.fail=a,this.depthFail=s,this.pass=o;}}Ui.disabled=new Ui({func:519,mask:0},0,0,Ni,Ni,Ni);class ji{constructor(t,e,i){this.enable=t,this.mode=e,this.frontFace=i;}}let Zi;function qi(t,i,a,s,o){const r=t.context,n=r.gl,l=t.useProgram("collisionBox"),h=[];let c=0,u=0;for(let _=0;_<s.length;_++){const p=s[_],m=i.getTile(p).getBucket(a);if(!m)continue;const f=o?m.textCollisionBox:m.iconCollisionBox,g=m.collisionCircleArray;if(g.length>0){const i=e.H();e.aQ(i,m.placementInvProjMatrix,t.transform.glCoordMatrix),e.aQ(i,i,m.placementViewportMatrix),h.push({circleArray:g,circleOffset:u,transform:p.posMatrix,invTransform:i,coord:p}),c+=g.length/4,u=c;}f&&l.draw(r,n.LINES,Oi.disabled,Ui.disabled,t.colorModeForRenderPass(),ji.disabled,{u_matrix:p.posMatrix,u_pixel_extrude_scale:[1/(d=t.transform).width,1/d.height]},t.style.map.terrain&&t.style.map.terrain.getTerrainData(p),a.id,f.layoutVertexBuffer,f.indexBuffer,f.segments,null,t.transform.zoom,null,null,f.collisionVertexBuffer);}var d;if(!o||!h.length)return;const _=t.useProgram("collisionCircle"),p=new e.aR;p.resize(4*c),p._trim();let m=0;for(const t of h)for(let e=0;e<t.circleArray.length/4;e++){const i=4*e,a=t.circleArray[i+0],s=t.circleArray[i+1],o=t.circleArray[i+2],r=t.circleArray[i+3];p.emplace(m++,a,s,o,r,0),p.emplace(m++,a,s,o,r,1),p.emplace(m++,a,s,o,r,2),p.emplace(m++,a,s,o,r,3);}(!Zi||Zi.length<2*c)&&(Zi=function(t){const i=2*t,a=new e.aT;a.resize(i),a._trim();for(let t=0;t<i;t++){const e=6*t;a.uint16[e+0]=4*t+0,a.uint16[e+1]=4*t+1,a.uint16[e+2]=4*t+2,a.uint16[e+3]=4*t+2,a.uint16[e+4]=4*t+3,a.uint16[e+5]=4*t+0;}return a}(c));const f=r.createIndexBuffer(Zi,!0),g=r.createVertexBuffer(p,e.aS.members,!0);for(const i of h){const s=Se(i.transform,i.invTransform,t.transform);_.draw(r,n.TRIANGLES,Oi.disabled,Ui.disabled,t.colorModeForRenderPass(),ji.disabled,s,t.style.map.terrain&&t.style.map.terrain.getTerrainData(i.coord),a.id,g,f,e.a0.simpleSegment(0,2*i.circleOffset,i.circleArray.length,i.circleArray.length/2),null,t.transform.zoom,null,null,null);}g.destroy(),f.destroy();}ji.disabled=new ji(!1,1029,2305),ji.backCCW=new ji(!0,1029,2305);const Vi=e.an(new Float32Array(16));function Gi(t,i,a,s,o,r){const{horizontalAlign:n,verticalAlign:l}=e.au(t);return new e.P((-(n-.5)*i/o+s[0])*r,(-(l-.5)*a/o+s[1])*r)}function Hi(t,i,a,s,o,r){const n=i.tileAnchorPoint.add(new e.P(i.translation[0],i.translation[1]));if(i.pitchWithMap){let t=s.mult(r);a||(t=t.rotate(-o));const e=n.add(t);return xt(e.x,e.y,i.labelPlaneMatrix,i.getElevation).point}if(a){const e=St(i.tileAnchorPoint.x+1,i.tileAnchorPoint.y,i).point.sub(t),a=Math.atan(e.y/e.x)+(e.x<0?Math.PI:0);return t.add(s.rotate(a))}return t.add(s)}function Wi(t,i,a,s,o,r,n,l,h,c,u,d,_,p){const m=t.text.placedSymbolArray,f=t.text.dynamicLayoutVertexArray,g=t.icon.dynamicLayoutVertexArray,v={};f.clear();for(let g=0;g<m.length;g++){const x=m.get(g),y=x.hidden||!x.crossTileID||t.allowVerticalPlacement&&!x.placedOrientation?null:s[x.crossTileID];if(y){const s=new e.P(x.anchorX,x.anchorY),m={getElevation:p,width:o.width,height:o.height,labelPlaneMatrix:r,lineVertexArray:null,pitchWithMap:a,projection:u,projectionCache:null,tileAnchorPoint:s,translation:d,unwrappedTileID:_},g=a?xt(s.x,s.y,n,p):St(s.x,s.y,m),b=yt(o.cameraToCenterDistance,g.signedDistanceFromCamera);let w=e.ai(t.textSizeData,h,x)*b/e.ap;a&&(w*=t.tilePixelRatio/l);const{width:T,height:I,anchor:E,textOffset:P,textBoxScale:C}=y,S=Gi(E,T,I,P,C,w),z=u.getPitchedTextCorrection(o,s.add(new e.P(d[0],d[1])),_),D=Hi(g.point,m,i,S,o.angle,z),M=t.allowVerticalPlacement&&x.placedOrientation===e.ah.vertical?Math.PI/2:0;for(let t=0;t<x.numGlyphs;t++)e.aj(f,D,M);c&&x.associatedIconIndex>=0&&(v[x.associatedIconIndex]={shiftedAnchor:D,angle:M});}else Rt(x.numGlyphs,f);}if(c){g.clear();const i=t.icon.placedSymbolArray;for(let t=0;t<i.length;t++){const a=i.get(t);if(a.hidden)Rt(a.numGlyphs,g);else {const i=v[t];if(i)for(let t=0;t<a.numGlyphs;t++)e.aj(g,i.shiftedAnchor,i.angle);else Rt(a.numGlyphs,g);}}t.icon.dynamicLayoutVertexBuffer.updateData(g);}t.text.dynamicLayoutVertexBuffer.updateData(f);}function $i(t,e,i){return i.iconsInText&&e?"symbolTextAndIcon":t?"symbolSDF":"symbolIcon"}function Xi(t,i,a,s,o,r,n,l,h,c,u,d){const _=t.context,p=_.gl,m=t.transform,f=ie(),g="map"===l,v="map"===h,x="viewport"!==l&&"point"!==a.layout.get("symbol-placement"),y=g&&!v&&!x,b=!v&&x,w=!a.layout.get("symbol-sort-key").isConstant();let T=!1;const I=t.depthModeForSublayer(0,Oi.ReadOnly),E=a._unevaluatedLayout.hasValue("text-variable-anchor")||a._unevaluatedLayout.hasValue("text-variable-anchor-offset"),P=[],C=f.getCircleRadiusCorrection(m);for(const l of s){const s=i.getTile(l),h=s.getBucket(a);if(!h)continue;const u=o?h.text:h.icon;if(!u||!u.segments.get().length||!u.hasVisibleVertices)continue;const d=u.programConfigurations.get(a.id),_=o||h.sdfIcons,I=o?h.textSizeData:h.iconSizeData,S=v||0!==m.pitch,z=t.useProgram($i(_,o,h),d),D=e.ag(I,m.zoom),M=t.style.map.terrain&&t.style.map.terrain.getTerrainData(l);let A,R,k,L,F=[0,0],B=null;if(o)R=s.glyphAtlasTexture,k=p.LINEAR,A=s.glyphAtlasTexture.size,h.iconsInText&&(F=s.imageAtlasTexture.size,B=s.imageAtlasTexture,L=S||t.options.rotating||t.options.zooming||"composite"===I.kind||"camera"===I.kind?p.LINEAR:p.NEAREST);else {const e=1!==a.layout.get("icon-size").constantOr(0)||h.iconsNeedLinear;R=s.imageAtlasTexture,k=_||t.options.rotating||t.options.zooming||e||S?p.LINEAR:p.NEAREST,A=s.imageAtlasTexture.size;}const O=Bt(s,1,t.transform.zoom),N=b?l.posMatrix:Vi,U=gt(N,v,g,t.transform,O),j=vt(N,v,g,t.transform,O),Z=vt(l.posMatrix,v,g,t.transform,O),q=f.translatePosition(t.transform,s,r,n),V=E&&h.hasTextData(),G="none"!==a.layout.get("icon-text-fit")&&V&&h.hasIconData();if(x){const e=t.style.map.terrain?(e,i)=>t.style.map.terrain.getElevation(l,e,i):null,i="map"===a.layout.get("text-rotation-alignment");wt(h,l.posMatrix,t,o,U,Z,v,c,i,f,l.toUnwrapped(),m.width,m.height,q,e);}const H=l.posMatrix,W=o&&E||G,$=x||W?Vi:U,X=j,K=_&&0!==a.paint.get(o?"text-halo-width":"icon-halo-width").constantOr(1);let J;J=_?h.iconsInText?Ve(I.kind,D,y,v,x,W,t,H,$,X,q,A,F,C):qe(I.kind,D,y,v,x,W,t,H,$,X,q,o,A,!0,C):Ze(I.kind,D,y,v,x,W,t,H,$,X,q,o,A,C);const Y={program:z,buffers:u,uniformValues:J,atlasTexture:R,atlasTextureIcon:B,atlasInterpolation:k,atlasInterpolationIcon:L,isSDF:_,hasHalo:K};if(w&&h.canOverlap){T=!0;const t=u.segments.get();for(const i of t)P.push({segments:new e.a0([i]),sortKey:i.sortKey,state:Y,terrainData:M});}else P.push({segments:u.segments,sortKey:0,state:Y,terrainData:M});}T&&P.sort(((t,e)=>t.sortKey-e.sortKey));for(const e of P){const i=e.state;if(_.activeTexture.set(p.TEXTURE0),i.atlasTexture.bind(i.atlasInterpolation,p.CLAMP_TO_EDGE),i.atlasTextureIcon&&(_.activeTexture.set(p.TEXTURE1),i.atlasTextureIcon&&i.atlasTextureIcon.bind(i.atlasInterpolationIcon,p.CLAMP_TO_EDGE)),i.isSDF){const s=i.uniformValues;i.hasHalo&&(s.u_is_halo=1,Ki(i.buffers,e.segments,a,t,i.program,I,u,d,s,e.terrainData)),s.u_is_halo=0;}Ki(i.buffers,e.segments,a,t,i.program,I,u,d,i.uniformValues,e.terrainData);}}function Ki(t,e,i,a,s,o,r,n,l,h){const c=a.context;s.draw(c,c.gl.TRIANGLES,o,r,n,ji.disabled,l,h,i.id,t.layoutVertexBuffer,t.indexBuffer,e,i.paint,a.transform.zoom,t.programConfigurations.get(i.id),t.dynamicLayoutVertexBuffer,t.opacityVertexBuffer);}function Ji(t,i,a,s){const o=t.context,r=o.gl,n=Ui.disabled,l=new Fi([r.ONE,r.ONE],e.aM.transparent,[!0,!0,!0,!0]),h=i.getBucket(a);if(!h)return;const c=s.key;let u=a.heatmapFbos.get(c);u||(u=Qi(o,i.tileSize,i.tileSize),a.heatmapFbos.set(c,u)),o.bindFramebuffer.set(u.framebuffer),o.viewport.set([0,0,i.tileSize,i.tileSize]),o.clear({color:e.aM.transparent});const d=h.programConfigurations.get(a.id),_=t.useProgram("heatmap",d),p=t.style.map.terrain.getTerrainData(s);_.draw(o,r.TRIANGLES,Oi.disabled,n,l,ji.disabled,Me(s.posMatrix,i,t.transform.zoom,a.paint.get("heatmap-intensity")),p,a.id,h.layoutVertexBuffer,h.indexBuffer,h.segments,a.paint,t.transform.zoom,d);}function Yi(t,e,i){const a=t.context,s=a.gl;a.setColorMode(t.colorModeForRenderPass());const o=ta(a,e),r=i.key,n=e.heatmapFbos.get(r);n&&(a.activeTexture.set(s.TEXTURE0),s.bindTexture(s.TEXTURE_2D,n.colorAttachment.get()),a.activeTexture.set(s.TEXTURE1),o.bind(s.LINEAR,s.CLAMP_TO_EDGE),t.useProgram("heatmapTexture").draw(a,s.TRIANGLES,Oi.disabled,Ui.disabled,t.colorModeForRenderPass(),ji.disabled,Ae(t,e,0,1),null,e.id,t.rasterBoundsBuffer,t.quadTriangleIndexBuffer,t.rasterBoundsSegments,e.paint,t.transform.zoom),n.destroy(),e.heatmapFbos.delete(r));}function Qi(t,e,i){var a,s;const o=t.gl,r=o.createTexture();o.bindTexture(o.TEXTURE_2D,r),o.texParameteri(o.TEXTURE_2D,o.TEXTURE_WRAP_S,o.CLAMP_TO_EDGE),o.texParameteri(o.TEXTURE_2D,o.TEXTURE_WRAP_T,o.CLAMP_TO_EDGE),o.texParameteri(o.TEXTURE_2D,o.TEXTURE_MIN_FILTER,o.LINEAR),o.texParameteri(o.TEXTURE_2D,o.TEXTURE_MAG_FILTER,o.LINEAR);const n=null!==(a=t.HALF_FLOAT)&&void 0!==a?a:o.UNSIGNED_BYTE,l=null!==(s=t.RGBA16F)&&void 0!==s?s:o.RGBA;o.texImage2D(o.TEXTURE_2D,0,l,e,i,0,o.RGBA,n,null);const h=t.createFramebuffer(e,i,!1,!1);return h.colorAttachment.set(r),h}function ta(t,e){return e.colorRampTexture||(e.colorRampTexture=new b(t,e.colorRamp,t.gl.RGBA)),e.colorRampTexture}function ea(t,e,i,a,s){if(!i||!a||!a.imageAtlas)return;const o=a.imageAtlas.patternPositions;let r=o[i.to.toString()],n=o[i.from.toString()];if(!r&&n&&(r=n),!n&&r&&(n=r),!r||!n){const t=s.getPaintProperty(e);r=o[t],n=o[t];}r&&n&&t.setConstantPatternPositions(r,n);}function ia(t,e,i,a,s,o,r){const n=t.context.gl,l="fill-pattern",h=i.paint.get(l),c=h&&h.constantOr(1),u=i.getCrossfadeParameters();let d,_,p,m,f;r?(_=c&&!i.getPaintProperty("fill-outline-color")?"fillOutlinePattern":"fillOutline",d=n.LINES):(_=c?"fillPattern":"fill",d=n.TRIANGLES);const g=h.constantOr(null);for(const h of a){const a=e.getTile(h);if(c&&!a.patternsLoaded())continue;const v=a.getBucket(i);if(!v)continue;const x=v.programConfigurations.get(i.id),y=t.useProgram(_,x),b=t.style.map.terrain&&t.style.map.terrain.getTerrainData(h);c&&(t.context.activeTexture.set(n.TEXTURE0),a.imageAtlasTexture.bind(n.LINEAR,n.CLAMP_TO_EDGE),x.updatePaintBuffers(u)),ea(x,l,g,a,i);const w=b?h:null,T=t.translatePosMatrix(w?w.posMatrix:h.posMatrix,a,i.paint.get("fill-translate"),i.paint.get("fill-translate-anchor"));if(r){m=v.indexBuffer2,f=v.segments2;const e=[n.drawingBufferWidth,n.drawingBufferHeight];p="fillOutlinePattern"===_&&c?Pe(T,t,u,a,e):Ee(T,e);}else m=v.indexBuffer,f=v.segments,p=c?Ie(T,t,u,a):Te(T);y.draw(t.context,d,s,t.stencilModeForClipping(h),o,ji.disabled,p,b,i.id,v.layoutVertexBuffer,m,f,i.paint,t.transform.zoom,x);}}function aa(t,e,i,a,s,o,r){const n=t.context,l=n.gl,h="fill-extrusion-pattern",c=i.paint.get(h),u=c.constantOr(1),d=i.getCrossfadeParameters(),_=i.paint.get("fill-extrusion-opacity"),p=c.constantOr(null);for(const c of a){const a=e.getTile(c),m=a.getBucket(i);if(!m)continue;const f=t.style.map.terrain&&t.style.map.terrain.getTerrainData(c),g=m.programConfigurations.get(i.id),v=t.useProgram(u?"fillExtrusionPattern":"fillExtrusion",g);u&&(t.context.activeTexture.set(l.TEXTURE0),a.imageAtlasTexture.bind(l.LINEAR,l.CLAMP_TO_EDGE),g.updatePaintBuffers(d)),ea(g,h,p,a,i);const x=t.translatePosMatrix(c.posMatrix,a,i.paint.get("fill-extrusion-translate"),i.paint.get("fill-extrusion-translate-anchor")),y=i.paint.get("fill-extrusion-vertical-gradient"),b=u?we(x,t,y,_,c,d,a):be(x,t,y,_);v.draw(n,n.gl.TRIANGLES,s,o,r,ji.backCCW,b,f,i.id,m.layoutVertexBuffer,m.indexBuffer,m.segments,i.paint,t.transform.zoom,g,t.style.map.terrain&&m.centroidVertexBuffer);}}function sa(t,e,i,a,s,o,r){const n=t.context,l=n.gl,h=i.fbo;if(!h)return;const c=t.useProgram("hillshade"),u=t.style.map.terrain&&t.style.map.terrain.getTerrainData(e);n.activeTexture.set(l.TEXTURE0),l.bindTexture(l.TEXTURE_2D,h.colorAttachment.get()),c.draw(n,l.TRIANGLES,s,o,r,ji.disabled,((t,e,i,a)=>{const s=i.paint.get("hillshade-shadow-color"),o=i.paint.get("hillshade-highlight-color"),r=i.paint.get("hillshade-accent-color");let n=i.paint.get("hillshade-illumination-direction")*(Math.PI/180);"viewport"===i.paint.get("hillshade-illumination-anchor")&&(n-=t.transform.angle);const l=!t.options.moving;return {u_matrix:a?a.posMatrix:t.transform.calculatePosMatrix(e.tileID.toUnwrapped(),l),u_image:0,u_latrange:Re(0,e.tileID),u_light:[i.paint.get("hillshade-exaggeration"),n],u_shadow:s,u_highlight:o,u_accent:r}})(t,i,a,u?e:null),u,a.id,t.rasterBoundsBuffer,t.quadTriangleIndexBuffer,t.rasterBoundsSegments);}function oa(t,i,a,s,o,r){const n=t.context,l=n.gl,h=i.dem;if(h&&h.data){const c=h.dim,u=h.stride,d=h.getPixels();if(n.activeTexture.set(l.TEXTURE1),n.pixelStoreUnpackPremultiplyAlpha.set(!1),i.demTexture=i.demTexture||t.getTileTexture(u),i.demTexture){const t=i.demTexture;t.update(d,{premultiply:!1}),t.bind(l.NEAREST,l.CLAMP_TO_EDGE);}else i.demTexture=new b(n,d,l.RGBA,{premultiply:!1}),i.demTexture.bind(l.NEAREST,l.CLAMP_TO_EDGE);n.activeTexture.set(l.TEXTURE0);let _=i.fbo;if(!_){const t=new b(n,{width:c,height:c,data:null},l.RGBA);t.bind(l.LINEAR,l.CLAMP_TO_EDGE),_=i.fbo=n.createFramebuffer(c,c,!0,!1),_.colorAttachment.set(t.texture);}n.bindFramebuffer.set(_.framebuffer),n.viewport.set([0,0,c,c]),t.useProgram("hillshadePrepare").draw(n,l.TRIANGLES,s,o,r,ji.disabled,((t,i)=>{const a=i.stride,s=e.H();return e.aP(s,0,e.X,-e.X,0,0,1),e.J(s,s,[0,-e.X,0]),{u_matrix:s,u_image:1,u_dimension:[a,a],u_zoom:t.overscaledZ,u_unpack:i.getUnpackVector()}})(i.tileID,h),null,a.id,t.rasterBoundsBuffer,t.quadTriangleIndexBuffer,t.rasterBoundsSegments),i.needsHillshadePrepare=!1;}}function ra(t,i,a,s,r,n){const l=s.paint.get("raster-fade-duration");if(!n&&l>0){const s=o.now(),n=(s-t.timeAdded)/l,h=i?(s-i.timeAdded)/l:-1,c=a.getSource(),u=r.coveringZoomLevel({tileSize:c.tileSize,roundZoom:c.roundZoom}),d=!i||Math.abs(i.tileID.overscaledZ-u)>Math.abs(t.tileID.overscaledZ-u),_=d&&t.refreshedUponExpiration?1:e.ac(d?n:1-h,0,1);return t.refreshedUponExpiration&&n>=1&&(t.refreshedUponExpiration=!1),i?{opacity:1,mix:1-_}:{opacity:_,mix:0}}return {opacity:1,mix:0}}const na=new e.aM(1,0,0,1),la=new e.aM(0,1,0,1),ha=new e.aM(0,0,1,1),ca=new e.aM(1,0,1,1),ua=new e.aM(0,1,1,1);function da(t,e,i,a){pa(t,0,e+i/2,t.transform.width,i,a);}function _a(t,e,i,a){pa(t,e-i/2,0,i,t.transform.height,a);}function pa(t,e,i,a,s,o){const r=t.context,n=r.gl;n.enable(n.SCISSOR_TEST),n.scissor(e*t.pixelRatio,i*t.pixelRatio,a*t.pixelRatio,s*t.pixelRatio),r.clear({color:o}),n.disable(n.SCISSOR_TEST);}function ma(t,i,a){const s=t.context,o=s.gl,r=a.posMatrix,n=t.useProgram("debug"),l=Oi.disabled,h=Ui.disabled,c=t.colorModeForRenderPass(),u="$debug",d=t.style.map.terrain&&t.style.map.terrain.getTerrainData(a);s.activeTexture.set(o.TEXTURE0);const _=i.getTileByID(a.key).latestRawTileData,p=Math.floor((_&&_.byteLength||0)/1024),m=i.getTile(a).tileSize,f=512/Math.min(m,512)*(a.overscaledZ/t.transform.zoom)*.5;let g=a.canonical.toString();a.overscaledZ!==a.canonical.z&&(g+=` => ${a.overscaledZ}`),function(t,e){t.initDebugOverlayCanvas();const i=t.debugOverlayCanvas,a=t.context.gl,s=t.debugOverlayCanvas.getContext("2d");s.clearRect(0,0,i.width,i.height),s.shadowColor="white",s.shadowBlur=2,s.lineWidth=1.5,s.strokeStyle="white",s.textBaseline="top",s.font="bold 36px Open Sans, sans-serif",s.fillText(e,5,5),s.strokeText(e,5,5),t.debugOverlayTexture.update(i),t.debugOverlayTexture.bind(a.LINEAR,a.CLAMP_TO_EDGE);}(t,`${g} ${p}kB`),n.draw(s,o.TRIANGLES,l,h,Fi.alphaBlended,ji.disabled,ze(r,e.aM.transparent,f),null,u,t.debugBuffer,t.quadTriangleIndexBuffer,t.debugSegments),n.draw(s,o.LINE_STRIP,l,h,c,ji.disabled,ze(r,e.aM.red),d,u,t.debugBuffer,t.tileBorderIndexBuffer,t.debugSegments);}function fa(t,e,i){const a=t.context,s=a.gl,o=t.colorModeForRenderPass(),r=new Oi(s.LEQUAL,Oi.ReadWrite,t.depthRangeFor3D),n=t.useProgram("terrain"),l=e.getTerrainMesh();a.bindFramebuffer.set(null),a.viewport.set([0,0,t.width,t.height]);for(const h of i){const i=t.renderToTexture.getTexture(h),c=e.getTerrainData(h.tileID);a.activeTexture.set(s.TEXTURE0),s.bindTexture(s.TEXTURE_2D,i.texture);const u=t.transform.calculatePosMatrix(h.tileID.toUnwrapped()),d=e.getMeshFrameDelta(t.transform.zoom),_=t.transform.calculateFogMatrix(h.tileID.toUnwrapped()),p=ge(u,d,_,t.style.sky,t.transform.pitch);n.draw(a,s.TRIANGLES,r,Ui.disabled,o,ji.backCCW,p,c,"terrain",l.vertexBuffer,l.indexBuffer,l.segments);}}class ga{constructor(t,e,i){this.vertexBuffer=t,this.indexBuffer=e,this.segments=i;}destroy(){this.vertexBuffer.destroy(),this.indexBuffer.destroy(),this.segments.destroy(),this.vertexBuffer=null,this.indexBuffer=null,this.segments=null;}}class va{constructor(t,i){this.context=new Bi(t),this.transform=i,this._tileTextures={},this.terrainFacilitator={dirty:!0,matrix:e.an(new Float64Array(16)),renderTime:0},this.setup(),this.numSublayers=ut.maxUnderzooming+ut.maxOverzooming+1,this.depthEpsilon=1/Math.pow(2,16),this.crossTileSymbolIndex=new he;}resize(t,e,i){if(this.width=Math.floor(t*i),this.height=Math.floor(e*i),this.pixelRatio=i,this.context.viewport.set([0,0,this.width,this.height]),this.style)for(const t of this.style._order)this.style._layers[t].resize();}setup(){const t=this.context,i=new e.aX;i.emplaceBack(0,0),i.emplaceBack(e.X,0),i.emplaceBack(0,e.X),i.emplaceBack(e.X,e.X),this.tileExtentBuffer=t.createVertexBuffer(i,_e.members),this.tileExtentSegments=e.a0.simpleSegment(0,0,4,2);const a=new e.aX;a.emplaceBack(0,0),a.emplaceBack(e.X,0),a.emplaceBack(0,e.X),a.emplaceBack(e.X,e.X),this.debugBuffer=t.createVertexBuffer(a,_e.members),this.debugSegments=e.a0.simpleSegment(0,0,4,5);const s=new e.$;s.emplaceBack(0,0,0,0),s.emplaceBack(e.X,0,e.X,0),s.emplaceBack(0,e.X,0,e.X),s.emplaceBack(e.X,e.X,e.X,e.X),this.rasterBoundsBuffer=t.createVertexBuffer(s,Y.members),this.rasterBoundsSegments=e.a0.simpleSegment(0,0,4,2);const o=new e.aX;o.emplaceBack(0,0),o.emplaceBack(1,0),o.emplaceBack(0,1),o.emplaceBack(1,1),this.viewportBuffer=t.createVertexBuffer(o,_e.members),this.viewportSegments=e.a0.simpleSegment(0,0,4,2);const r=new e.aZ;r.emplaceBack(0),r.emplaceBack(1),r.emplaceBack(3),r.emplaceBack(2),r.emplaceBack(0),this.tileBorderIndexBuffer=t.createIndexBuffer(r);const n=new e.aY;n.emplaceBack(0,1,2),n.emplaceBack(2,1,3),this.quadTriangleIndexBuffer=t.createIndexBuffer(n);const l=this.context.gl;this.stencilClearMode=new Ui({func:l.ALWAYS,mask:0},0,255,l.ZERO,l.ZERO,l.ZERO);}clearStencil(){const t=this.context,i=t.gl;this.nextStencilID=1,this.currentStencilSource=void 0;const a=e.H();e.aP(a,0,this.width,this.height,0,0,1),e.K(a,a,[i.drawingBufferWidth,i.drawingBufferHeight,0]),this.useProgram("clippingMask").draw(t,i.TRIANGLES,Oi.disabled,this.stencilClearMode,Fi.disabled,ji.disabled,De(a),null,"$clipping",this.viewportBuffer,this.quadTriangleIndexBuffer,this.viewportSegments);}_renderTileClippingMasks(t,e){if(this.currentStencilSource===t.source||!t.isTileClipped()||!e||!e.length)return;this.currentStencilSource=t.source;const i=this.context,a=i.gl;this.nextStencilID+e.length>256&&this.clearStencil(),i.setColorMode(Fi.disabled),i.setDepthMode(Oi.disabled);const s=this.useProgram("clippingMask");this._tileClippingMaskIDs={};for(const t of e){const e=this._tileClippingMaskIDs[t.key]=this.nextStencilID++,o=this.style.map.terrain&&this.style.map.terrain.getTerrainData(t);s.draw(i,a.TRIANGLES,Oi.disabled,new Ui({func:a.ALWAYS,mask:0},e,255,a.KEEP,a.KEEP,a.REPLACE),Fi.disabled,ji.disabled,De(t.posMatrix),o,"$clipping",this.tileExtentBuffer,this.quadTriangleIndexBuffer,this.tileExtentSegments);}}stencilModeFor3D(){this.currentStencilSource=void 0,this.nextStencilID+1>256&&this.clearStencil();const t=this.nextStencilID++,e=this.context.gl;return new Ui({func:e.NOTEQUAL,mask:255},t,255,e.KEEP,e.KEEP,e.REPLACE)}stencilModeForClipping(t){const e=this.context.gl;return new Ui({func:e.EQUAL,mask:255},this._tileClippingMaskIDs[t.key],0,e.KEEP,e.KEEP,e.REPLACE)}stencilConfigForOverlap(t){const e=this.context.gl,i=t.sort(((t,e)=>e.overscaledZ-t.overscaledZ)),a=i[i.length-1].overscaledZ,s=i[0].overscaledZ-a+1;if(s>1){this.currentStencilSource=void 0,this.nextStencilID+s>256&&this.clearStencil();const t={};for(let i=0;i<s;i++)t[i+a]=new Ui({func:e.GEQUAL,mask:255},i+this.nextStencilID,255,e.KEEP,e.KEEP,e.REPLACE);return this.nextStencilID+=s,[t,i]}return [{[a]:Ui.disabled},i]}colorModeForRenderPass(){const t=this.context.gl;if(this._showOverdrawInspector){const i=1/8;return new Fi([t.CONSTANT_COLOR,t.ONE],new e.aM(i,i,i,0),[!0,!0,!0,!0])}return "opaque"===this.renderPass?Fi.unblended:Fi.alphaBlended}depthModeForSublayer(t,e,i){if(!this.opaquePassEnabledForLayer())return Oi.disabled;const a=1-((1+this.currentLayer)*this.numSublayers+t)*this.depthEpsilon;return new Oi(i||this.context.gl.LEQUAL,e,[a,a])}opaquePassEnabledForLayer(){return this.currentLayer<this.opaquePassCutoff}render(t,i){this.style=t,this.options=i,this.lineAtlas=t.lineAtlas,this.imageManager=t.imageManager,this.glyphManager=t.glyphManager,this.symbolFadeChange=t.placement.symbolFadeChange(o.now()),this.imageManager.beginFrame();const a=this.style._order,s=this.style.sourceCaches,r={},n={},l={};for(const t in s){const e=s[t];e.used&&e.prepare(this.context),r[t]=e.getVisibleCoordinates(),n[t]=r[t].slice().reverse(),l[t]=e.getVisibleCoordinates(!0).reverse();}this.opaquePassCutoff=1/0;for(let t=0;t<a.length;t++)if(this.style._layers[a[t]].is3D()){this.opaquePassCutoff=t;break}this.maybeDrawDepthAndCoords(!1),this.renderToTexture&&(this.renderToTexture.prepareForRender(this.style,this.transform.zoom),this.opaquePassCutoff=0),this.renderPass="offscreen";for(const t of a){const e=this.style._layers[t];if(!e.hasOffscreenPass()||e.isHidden(this.transform.zoom))continue;const i=n[e.source];("custom"===e.type||i.length)&&this.renderLayer(this,s[e.source],e,i);}if(this.context.bindFramebuffer.set(null),this.context.clear({color:i.showOverdrawInspector?e.aM.black:e.aM.transparent,depth:1}),this.clearStencil(),this.style.sky&&function(t,i){const a=t.context,s=a.gl,o=((t,e,i)=>({u_sky_color:t.properties.get("sky-color"),u_horizon_color:t.properties.get("horizon-color"),u_horizon:(e.height/2+e.getHorizon())*i,u_sky_horizon_blend:t.properties.get("sky-horizon-blend")*e.height/2*i}))(i,t.style.map.transform,t.pixelRatio),r=new Oi(s.LEQUAL,Oi.ReadWrite,[0,1]),n=Ui.disabled,l=t.colorModeForRenderPass(),h=t.useProgram("sky");if(!i.mesh){const t=new e.aX;t.emplaceBack(-1,-1),t.emplaceBack(1,-1),t.emplaceBack(1,1),t.emplaceBack(-1,1);const s=new e.aY;s.emplaceBack(0,1,2),s.emplaceBack(0,2,3),i.mesh=new ga(a.createVertexBuffer(t,_e.members),a.createIndexBuffer(s),e.a0.simpleSegment(0,0,t.length,s.length));}h.draw(a,s.TRIANGLES,r,n,l,ji.disabled,o,void 0,"sky",i.mesh.vertexBuffer,i.mesh.indexBuffer,i.mesh.segments);}(this,this.style.sky),this._showOverdrawInspector=i.showOverdrawInspector,this.depthRangeFor3D=[0,1-(t._order.length+2)*this.numSublayers*this.depthEpsilon],!this.renderToTexture)for(this.renderPass="opaque",this.currentLayer=a.length-1;this.currentLayer>=0;this.currentLayer--){const t=this.style._layers[a[this.currentLayer]],e=s[t.source],i=r[t.source];this._renderTileClippingMasks(t,i),this.renderLayer(this,e,t,i);}for(this.renderPass="translucent",this.currentLayer=0;this.currentLayer<a.length;this.currentLayer++){const t=this.style._layers[a[this.currentLayer]],e=s[t.source];if(this.renderToTexture&&this.renderToTexture.renderLayer(t))continue;const i=("symbol"===t.type?l:n)[t.source];this._renderTileClippingMasks(t,r[t.source]),this.renderLayer(this,e,t,i);}if(this.options.showTileBoundaries){const t=function(t,e){let i=null;const a=Object.values(t._layers).flatMap((i=>i.source&&!i.isHidden(e)?[t.sourceCaches[i.source]]:[])),s=a.filter((t=>"vector"===t.getSource().type)),o=a.filter((t=>"vector"!==t.getSource().type)),r=t=>{(!i||i.getSource().maxzoom<t.getSource().maxzoom)&&(i=t);};return s.forEach((t=>r(t))),i||o.forEach((t=>r(t))),i}(this.style,this.transform.zoom);t&&function(t,e,i){for(let a=0;a<i.length;a++)ma(t,e,i[a]);}(this,t,t.getVisibleCoordinates());}this.options.showPadding&&function(t){const e=t.transform.padding;da(t,t.transform.height-(e.top||0),3,na),da(t,e.bottom||0,3,la),_a(t,e.left||0,3,ha),_a(t,t.transform.width-(e.right||0),3,ca);const i=t.transform.centerPoint;!function(t,e,i,a){pa(t,e-1,i-10,2,20,a),pa(t,e-10,i-1,20,2,a);}(t,i.x,t.transform.height-i.y,ua);}(this),this.context.setDefault();}maybeDrawDepthAndCoords(t){if(!this.style||!this.style.map||!this.style.map.terrain)return;const i=this.terrainFacilitator.matrix,a=this.transform.modelViewProjectionMatrix;let s=this.terrainFacilitator.dirty;s||(s=t?!e.a_(i,a):!e.a$(i,a)),s||(s=this.style.map.terrain.sourceCache.tilesAfterTime(this.terrainFacilitator.renderTime).length>0),s&&(e.b0(i,a),this.terrainFacilitator.renderTime=Date.now(),this.terrainFacilitator.dirty=!1,function(t,i){const a=t.context,s=a.gl,o=Fi.unblended,r=new Oi(s.LEQUAL,Oi.ReadWrite,[0,1]),n=i.getTerrainMesh(),l=i.sourceCache.getRenderableTiles(),h=t.useProgram("terrainDepth");a.bindFramebuffer.set(i.getFramebuffer("depth").framebuffer),a.viewport.set([0,0,t.width/devicePixelRatio,t.height/devicePixelRatio]),a.clear({color:e.aM.transparent,depth:1});for(const e of l){const l=i.getTerrainData(e.tileID),c={u_matrix:t.transform.calculatePosMatrix(e.tileID.toUnwrapped()),u_ele_delta:i.getMeshFrameDelta(t.transform.zoom)};h.draw(a,s.TRIANGLES,r,Ui.disabled,o,ji.backCCW,c,l,"terrain",n.vertexBuffer,n.indexBuffer,n.segments);}a.bindFramebuffer.set(null),a.viewport.set([0,0,t.width,t.height]);}(this,this.style.map.terrain),function(t,i){const a=t.context,s=a.gl,o=Fi.unblended,r=new Oi(s.LEQUAL,Oi.ReadWrite,[0,1]),n=i.getTerrainMesh(),l=i.getCoordsTexture(),h=i.sourceCache.getRenderableTiles(),c=t.useProgram("terrainCoords");a.bindFramebuffer.set(i.getFramebuffer("coords").framebuffer),a.viewport.set([0,0,t.width/devicePixelRatio,t.height/devicePixelRatio]),a.clear({color:e.aM.transparent,depth:1}),i.coordsIndex=[];for(const e of h){const h=i.getTerrainData(e.tileID);a.activeTexture.set(s.TEXTURE0),s.bindTexture(s.TEXTURE_2D,l.texture);const u={u_matrix:t.transform.calculatePosMatrix(e.tileID.toUnwrapped()),u_terrain_coords_id:(255-i.coordsIndex.length)/255,u_texture:0,u_ele_delta:i.getMeshFrameDelta(t.transform.zoom)};c.draw(a,s.TRIANGLES,r,Ui.disabled,o,ji.backCCW,u,h,"terrain",n.vertexBuffer,n.indexBuffer,n.segments),i.coordsIndex.push(e.tileID.key);}a.bindFramebuffer.set(null),a.viewport.set([0,0,t.width,t.height]);}(this,this.style.map.terrain));}renderLayer(t,i,a,s){if(!a.isHidden(this.transform.zoom)&&("background"===a.type||"custom"===a.type||(s||[]).length))switch(this.id=a.id,a.type){case"symbol":!function(t,i,a,s,o){if("translucent"!==t.renderPass)return;const r=Ui.disabled,n=t.colorModeForRenderPass();(a._unevaluatedLayout.hasValue("text-variable-anchor")||a._unevaluatedLayout.hasValue("text-variable-anchor-offset"))&&function(t,i,a,s,o,r,n,l,h){const c=i.transform,u=ie(),d="map"===o,_="map"===r;for(const o of t){const t=s.getTile(o),r=t.getBucket(a);if(!r||!r.text||!r.text.segments.get().length)continue;const p=e.ag(r.textSizeData,c.zoom),m=Bt(t,1,i.transform.zoom),f=gt(o.posMatrix,_,d,i.transform,m),g="none"!==a.layout.get("icon-text-fit")&&r.hasIconData();if(p){const e=Math.pow(2,c.zoom-t.tileID.overscaledZ),a=i.style.map.terrain?(t,e)=>i.style.map.terrain.getElevation(o,t,e):null,s=u.translatePosition(c,t,n,l);Wi(r,d,_,h,c,f,o.posMatrix,e,p,g,u,s,o.toUnwrapped(),a);}}}(s,t,a,i,a.layout.get("text-rotation-alignment"),a.layout.get("text-pitch-alignment"),a.paint.get("text-translate"),a.paint.get("text-translate-anchor"),o),0!==a.paint.get("icon-opacity").constantOr(1)&&Xi(t,i,a,s,!1,a.paint.get("icon-translate"),a.paint.get("icon-translate-anchor"),a.layout.get("icon-rotation-alignment"),a.layout.get("icon-pitch-alignment"),a.layout.get("icon-keep-upright"),r,n),0!==a.paint.get("text-opacity").constantOr(1)&&Xi(t,i,a,s,!0,a.paint.get("text-translate"),a.paint.get("text-translate-anchor"),a.layout.get("text-rotation-alignment"),a.layout.get("text-pitch-alignment"),a.layout.get("text-keep-upright"),r,n),i.map.showCollisionBoxes&&(qi(t,i,a,s,!0),qi(t,i,a,s,!1));}(t,i,a,s,this.style.placement.variableOffsets);break;case"circle":!function(t,i,a,s){if("translucent"!==t.renderPass)return;const o=a.paint.get("circle-opacity"),r=a.paint.get("circle-stroke-width"),n=a.paint.get("circle-stroke-opacity"),l=!a.layout.get("circle-sort-key").isConstant();if(0===o.constantOr(1)&&(0===r.constantOr(1)||0===n.constantOr(1)))return;const h=t.context,c=h.gl,u=t.depthModeForSublayer(0,Oi.ReadOnly),d=Ui.disabled,_=t.colorModeForRenderPass(),p=[];for(let o=0;o<s.length;o++){const r=s[o],n=i.getTile(r),h=n.getBucket(a);if(!h)continue;const c=h.programConfigurations.get(a.id),u=t.useProgram("circle",c),d=h.layoutVertexBuffer,_=h.indexBuffer,m=t.style.map.terrain&&t.style.map.terrain.getTerrainData(r),f={programConfiguration:c,program:u,layoutVertexBuffer:d,indexBuffer:_,uniformValues:Ce(t,r,n,a),terrainData:m};if(l){const t=h.segments.get();for(const i of t)p.push({segments:new e.a0([i]),sortKey:i.sortKey,state:f});}else p.push({segments:h.segments,sortKey:0,state:f});}l&&p.sort(((t,e)=>t.sortKey-e.sortKey));for(const e of p){const{programConfiguration:i,program:s,layoutVertexBuffer:o,indexBuffer:r,uniformValues:n,terrainData:l}=e.state;s.draw(h,c.TRIANGLES,u,d,_,ji.disabled,n,l,a.id,o,r,e.segments,a.paint,t.transform.zoom,i);}}(t,i,a,s);break;case"heatmap":!function(t,i,a,s){if(0===a.paint.get("heatmap-opacity"))return;const o=t.context;if(t.style.map.terrain){for(const e of s){const s=i.getTile(e);i.hasRenderableParent(e)||("offscreen"===t.renderPass?Ji(t,s,a,e):"translucent"===t.renderPass&&Yi(t,a,e));}o.viewport.set([0,0,t.width,t.height]);}else "offscreen"===t.renderPass?function(t,i,a,s){const o=t.context,r=o.gl,n=Ui.disabled,l=new Fi([r.ONE,r.ONE],e.aM.transparent,[!0,!0,!0,!0]);((function(t,i,a){const s=t.gl;t.activeTexture.set(s.TEXTURE1),t.viewport.set([0,0,i.width/4,i.height/4]);let o=a.heatmapFbos.get(e.aU);o?(s.bindTexture(s.TEXTURE_2D,o.colorAttachment.get()),t.bindFramebuffer.set(o.framebuffer)):(o=Qi(t,i.width/4,i.height/4),a.heatmapFbos.set(e.aU,o));}))(o,t,a),o.clear({color:e.aM.transparent});for(let e=0;e<s.length;e++){const h=s[e];if(i.hasRenderableParent(h))continue;const c=i.getTile(h),u=c.getBucket(a);if(!u)continue;const d=u.programConfigurations.get(a.id),_=t.useProgram("heatmap",d),{zoom:p}=t.transform;_.draw(o,r.TRIANGLES,Oi.disabled,n,l,ji.disabled,Me(h.posMatrix,c,p,a.paint.get("heatmap-intensity")),null,a.id,u.layoutVertexBuffer,u.indexBuffer,u.segments,a.paint,t.transform.zoom,d);}o.viewport.set([0,0,t.width,t.height]);}(t,i,a,s):"translucent"===t.renderPass&&function(t,i){const a=t.context,s=a.gl;a.setColorMode(t.colorModeForRenderPass());const o=i.heatmapFbos.get(e.aU);o&&(a.activeTexture.set(s.TEXTURE0),s.bindTexture(s.TEXTURE_2D,o.colorAttachment.get()),a.activeTexture.set(s.TEXTURE1),ta(a,i).bind(s.LINEAR,s.CLAMP_TO_EDGE),t.useProgram("heatmapTexture").draw(a,s.TRIANGLES,Oi.disabled,Ui.disabled,t.colorModeForRenderPass(),ji.disabled,Ae(t,i,0,1),null,i.id,t.viewportBuffer,t.quadTriangleIndexBuffer,t.viewportSegments,i.paint,t.transform.zoom));}(t,a);}(t,i,a,s);break;case"line":!function(t,i,a,s){if("translucent"!==t.renderPass)return;const o=a.paint.get("line-opacity"),r=a.paint.get("line-width");if(0===o.constantOr(1)||0===r.constantOr(1))return;const n=t.depthModeForSublayer(0,Oi.ReadOnly),l=t.colorModeForRenderPass(),h=a.paint.get("line-dasharray"),c=a.paint.get("line-pattern"),u=c.constantOr(1),d=a.paint.get("line-gradient"),_=a.getCrossfadeParameters(),p=u?"linePattern":h?"lineSDF":d?"lineGradient":"line",m=t.context,f=m.gl;let g=!0;for(const o of s){const s=i.getTile(o);if(u&&!s.patternsLoaded())continue;const r=s.getBucket(a);if(!r)continue;const v=r.programConfigurations.get(a.id),x=t.context.program.get(),y=t.useProgram(p,v),w=g||y.program!==x,T=t.style.map.terrain&&t.style.map.terrain.getTerrainData(o),I=c.constantOr(null);if(I&&s.imageAtlas){const t=s.imageAtlas,e=t.patternPositions[I.to.toString()],i=t.patternPositions[I.from.toString()];e&&i&&v.setConstantPatternPositions(e,i);}const E=T?o:null,P=u?Fe(t,s,a,_,E):h?Be(t,s,a,h,_,E):d?Le(t,s,a,r.lineClipsArray.length,E):ke(t,s,a,E);if(u)m.activeTexture.set(f.TEXTURE0),s.imageAtlasTexture.bind(f.LINEAR,f.CLAMP_TO_EDGE),v.updatePaintBuffers(_);else if(h&&(w||t.lineAtlas.dirty))m.activeTexture.set(f.TEXTURE0),t.lineAtlas.bind(m);else if(d){const s=r.gradients[a.id];let n=s.texture;if(a.gradientVersion!==s.version){let l=256;if(a.stepInterpolant){const a=i.getSource().maxzoom,s=o.canonical.z===a?Math.ceil(1<<t.transform.maxZoom-o.canonical.z):1;l=e.ac(e.aV(r.maxLineLength/e.X*1024*s),256,m.maxTextureSize);}s.gradient=e.aW({expression:a.gradientExpression(),evaluationKey:"lineProgress",resolution:l,image:s.gradient||void 0,clips:r.lineClipsArray}),s.texture?s.texture.update(s.gradient):s.texture=new b(m,s.gradient,f.RGBA),s.version=a.gradientVersion,n=s.texture;}m.activeTexture.set(f.TEXTURE0),n.bind(a.stepInterpolant?f.NEAREST:f.LINEAR,f.CLAMP_TO_EDGE);}y.draw(m,f.TRIANGLES,n,t.stencilModeForClipping(o),l,ji.disabled,P,T,a.id,r.layoutVertexBuffer,r.indexBuffer,r.segments,a.paint,t.transform.zoom,v,r.layoutVertexBuffer2),g=!1;}}(t,i,a,s);break;case"fill":!function(t,i,a,s){const o=a.paint.get("fill-color"),r=a.paint.get("fill-opacity");if(0===r.constantOr(1))return;const n=t.colorModeForRenderPass(),l=a.paint.get("fill-pattern"),h=t.opaquePassEnabledForLayer()&&!l.constantOr(1)&&1===o.constantOr(e.aM.transparent).a&&1===r.constantOr(0)?"opaque":"translucent";if(t.renderPass===h){const e=t.depthModeForSublayer(1,"opaque"===t.renderPass?Oi.ReadWrite:Oi.ReadOnly);ia(t,i,a,s,e,n,!1);}if("translucent"===t.renderPass&&a.paint.get("fill-antialias")){const e=t.depthModeForSublayer(a.getPaintProperty("fill-outline-color")?2:0,Oi.ReadOnly);ia(t,i,a,s,e,n,!0);}}(t,i,a,s);break;case"fill-extrusion":!function(t,e,i,a){const s=i.paint.get("fill-extrusion-opacity");if(0!==s&&"translucent"===t.renderPass){const o=new Oi(t.context.gl.LEQUAL,Oi.ReadWrite,t.depthRangeFor3D);if(1!==s||i.paint.get("fill-extrusion-pattern").constantOr(1))aa(t,e,i,a,o,Ui.disabled,Fi.disabled),aa(t,e,i,a,o,t.stencilModeFor3D(),t.colorModeForRenderPass());else {const s=t.colorModeForRenderPass();aa(t,e,i,a,o,Ui.disabled,s);}}}(t,i,a,s);break;case"hillshade":!function(t,e,i,a){if("offscreen"!==t.renderPass&&"translucent"!==t.renderPass)return;const s=t.context,o=t.depthModeForSublayer(0,Oi.ReadOnly),r=t.colorModeForRenderPass(),[n,l]="translucent"===t.renderPass?t.stencilConfigForOverlap(a):[{},a];for(const a of l){const s=e.getTile(a);void 0!==s.needsHillshadePrepare&&s.needsHillshadePrepare&&"offscreen"===t.renderPass?oa(t,s,i,o,Ui.disabled,r):"translucent"===t.renderPass&&sa(t,a,s,i,o,n[a.overscaledZ],r);}s.viewport.set([0,0,t.width,t.height]);}(t,i,a,s);break;case"raster":!function(t,e,i,a){if("translucent"!==t.renderPass)return;if(0===i.paint.get("raster-opacity"))return;if(!a.length)return;const s=t.context,o=s.gl,r=e.getSource(),n=t.useProgram("raster"),l=t.colorModeForRenderPass(),[h,c]=r instanceof Q?[{},a]:t.stencilConfigForOverlap(a),u=c[c.length-1].overscaledZ,d=!t.options.moving;for(const a of c){const c=t.depthModeForSublayer(a.overscaledZ-u,1===i.paint.get("raster-opacity")?Oi.ReadWrite:Oi.ReadOnly,o.LESS),_=e.getTile(a);_.registerFadeDuration(i.paint.get("raster-fade-duration"));const p=e.findLoadedParent(a,0),m=e.findLoadedSibling(a),f=ra(_,p||m||null,e,i,t.transform,t.style.map.terrain);let g,v;const x="nearest"===i.paint.get("raster-resampling")?o.NEAREST:o.LINEAR;s.activeTexture.set(o.TEXTURE0),_.texture.bind(x,o.CLAMP_TO_EDGE,o.LINEAR_MIPMAP_NEAREST),s.activeTexture.set(o.TEXTURE1),p?(p.texture.bind(x,o.CLAMP_TO_EDGE,o.LINEAR_MIPMAP_NEAREST),g=Math.pow(2,p.tileID.overscaledZ-_.tileID.overscaledZ),v=[_.tileID.canonical.x*g%1,_.tileID.canonical.y*g%1]):_.texture.bind(x,o.CLAMP_TO_EDGE,o.LINEAR_MIPMAP_NEAREST),_.texture.useMipmap&&s.extTextureFilterAnisotropic&&t.transform.pitch>20&&o.texParameterf(o.TEXTURE_2D,s.extTextureFilterAnisotropic.TEXTURE_MAX_ANISOTROPY_EXT,s.extTextureFilterAnisotropicMax);const y=t.style.map.terrain&&t.style.map.terrain.getTerrainData(a),b=y?a:null,w=b?b.posMatrix:t.transform.calculatePosMatrix(a.toUnwrapped(),d),T=Ue(w,v||[0,0],g||1,f,i);r instanceof Q?n.draw(s,o.TRIANGLES,c,Ui.disabled,l,ji.disabled,T,y,i.id,r.boundsBuffer,t.quadTriangleIndexBuffer,r.boundsSegments):n.draw(s,o.TRIANGLES,c,h[a.overscaledZ],l,ji.disabled,T,y,i.id,t.rasterBoundsBuffer,t.quadTriangleIndexBuffer,t.rasterBoundsSegments);}}(t,i,a,s);break;case"background":!function(t,e,i,a){const s=i.paint.get("background-color"),o=i.paint.get("background-opacity");if(0===o)return;const r=t.context,n=r.gl,l=t.transform,h=l.tileSize,c=i.paint.get("background-pattern");if(t.isPatternMissing(c))return;const u=!c&&1===s.a&&1===o&&t.opaquePassEnabledForLayer()?"opaque":"translucent";if(t.renderPass!==u)return;const d=Ui.disabled,_=t.depthModeForSublayer(0,"opaque"===u?Oi.ReadWrite:Oi.ReadOnly),p=t.colorModeForRenderPass(),m=t.useProgram(c?"backgroundPattern":"background"),f=a||l.coveringTiles({tileSize:h,terrain:t.style.map.terrain});c&&(r.activeTexture.set(n.TEXTURE0),t.imageManager.bind(t.context));const g=i.getCrossfadeParameters();for(const e of f){const l=a?e.posMatrix:t.transform.calculatePosMatrix(e.toUnwrapped()),u=c?He(l,o,t,c,{tileID:e,tileSize:h},g):Ge(l,o,s),f=t.style.map.terrain&&t.style.map.terrain.getTerrainData(e);m.draw(r,n.TRIANGLES,_,d,p,ji.disabled,u,f,i.id,t.tileExtentBuffer,t.quadTriangleIndexBuffer,t.tileExtentSegments);}}(t,0,a,s);break;case"custom":!function(t,e,i){const a=t.context,s=i.implementation;if("offscreen"===t.renderPass){const e=s.prerender;e&&(t.setCustomLayerDefaults(),a.setColorMode(t.colorModeForRenderPass()),e.call(s,a.gl,t.transform.customLayerMatrix()),a.setDirty(),t.setBaseState());}else if("translucent"===t.renderPass){t.setCustomLayerDefaults(),a.setColorMode(t.colorModeForRenderPass()),a.setStencilMode(Ui.disabled);const e="3d"===s.renderingMode?new Oi(t.context.gl.LEQUAL,Oi.ReadWrite,t.depthRangeFor3D):t.depthModeForSublayer(0,Oi.ReadOnly);a.setDepthMode(e),s.render(a.gl,t.transform.customLayerMatrix(),{farZ:t.transform.farZ,nearZ:t.transform.nearZ,fov:t.transform._fov,modelViewProjectionMatrix:t.transform.modelViewProjectionMatrix,projectionMatrix:t.transform.projectionMatrix}),a.setDirty(),t.setBaseState(),a.bindFramebuffer.set(null);}}(t,0,a);}}translatePosMatrix(t,i,a,s,o){if(!a[0]&&!a[1])return t;const r=o?"map"===s?this.transform.angle:0:"viewport"===s?-this.transform.angle:0;if(r){const t=Math.sin(r),e=Math.cos(r);a=[a[0]*e-a[1]*t,a[0]*t+a[1]*e];}const n=[o?a[0]:Bt(i,a[0],this.transform.zoom),o?a[1]:Bt(i,a[1],this.transform.zoom),0],l=new Float32Array(16);return e.J(l,t,n),l}saveTileTexture(t){const e=this._tileTextures[t.size[0]];e?e.push(t):this._tileTextures[t.size[0]]=[t];}getTileTexture(t){const e=this._tileTextures[t];return e&&e.length>0?e.pop():null}isPatternMissing(t){if(!t)return !1;if(!t.from||!t.to)return !0;const e=this.imageManager.getPattern(t.from.toString()),i=this.imageManager.getPattern(t.to.toString());return !e||!i}useProgram(t,e){this.cache=this.cache||{};const i=t+(e?e.cacheKey:"")+(this._showOverdrawInspector?"/overdraw":"")+(this.style.map.terrain?"/terrain":"");return this.cache[i]||(this.cache[i]=new xe(this.context,pe[t],e,We[t],this._showOverdrawInspector,this.style.map.terrain)),this.cache[i]}setCustomLayerDefaults(){this.context.unbindVAO(),this.context.cullFace.setDefault(),this.context.activeTexture.setDefault(),this.context.pixelStoreUnpack.setDefault(),this.context.pixelStoreUnpackPremultiplyAlpha.setDefault(),this.context.pixelStoreUnpackFlipY.setDefault();}setBaseState(){const t=this.context.gl;this.context.cullFace.set(!1),this.context.viewport.set([0,0,this.width,this.height]),this.context.blendEquation.set(t.FUNC_ADD);}initDebugOverlayCanvas(){null==this.debugOverlayCanvas&&(this.debugOverlayCanvas=document.createElement("canvas"),this.debugOverlayCanvas.width=512,this.debugOverlayCanvas.height=512,this.debugOverlayTexture=new b(this.context,this.debugOverlayCanvas,this.context.gl.RGBA));}destroy(){this.debugOverlayTexture&&this.debugOverlayTexture.destroy();}overLimit(){const{drawingBufferWidth:t,drawingBufferHeight:e}=this.context.gl;return this.width!==t||this.height!==e}}class xa{constructor(t,e){this.points=t,this.planes=e;}static fromInvProjectionMatrix(t,i,a){const s=Math.pow(2,a),o=[[-1,1,-1,1],[1,1,-1,1],[1,-1,-1,1],[-1,-1,-1,1],[-1,1,1,1],[1,1,1,1],[1,-1,1,1],[-1,-1,1,1]].map((a=>{const o=1/(a=e.af([],a,t))[3]/i*s;return e.b1(a,a,[o,o,1/a[3],o])})),r=[[0,1,2],[6,5,4],[0,3,7],[2,1,5],[3,2,6],[0,4,5]].map((t=>{const e=function(t,e){var i=e[0],a=e[1],s=e[2],o=i*i+a*a+s*s;return o>0&&(o=1/Math.sqrt(o)),t[0]=e[0]*o,t[1]=e[1]*o,t[2]=e[2]*o,t}([],function(t,e,i){var a=e[0],s=e[1],o=e[2],r=i[0],n=i[1],l=i[2];return t[0]=s*l-o*n,t[1]=o*r-a*l,t[2]=a*n-s*r,t}([],g([],o[t[0]],o[t[1]]),g([],o[t[2]],o[t[1]]))),i=-((a=e)[0]*(s=o[t[1]])[0]+a[1]*s[1]+a[2]*s[2]);var a,s;return e.concat(i)}));return new xa(o,r)}}class ya{constructor(t,e){this.min=t,this.max=e,this.center=function(t,e,i){return t[0]=.5*e[0],t[1]=.5*e[1],t[2]=.5*e[2],t}([],function(t,e,i){return t[0]=e[0]+i[0],t[1]=e[1]+i[1],t[2]=e[2]+i[2],t}([],this.min,this.max));}quadrant(t){const e=[t%2==0,t<2],i=m(this.min),a=m(this.max);for(let t=0;t<e.length;t++)i[t]=e[t]?this.min[t]:this.center[t],a[t]=e[t]?this.center[t]:this.max[t];return a[2]=this.max[2],new ya(i,a)}distanceX(t){return Math.max(Math.min(this.max[0],t[0]),this.min[0])-t[0]}distanceY(t){return Math.max(Math.min(this.max[1],t[1]),this.min[1])-t[1]}intersects(t){const i=[[this.min[0],this.min[1],this.min[2],1],[this.max[0],this.min[1],this.min[2],1],[this.max[0],this.max[1],this.min[2],1],[this.min[0],this.max[1],this.min[2],1],[this.min[0],this.min[1],this.max[2],1],[this.max[0],this.min[1],this.max[2],1],[this.max[0],this.max[1],this.max[2],1],[this.min[0],this.max[1],this.max[2],1]];let a=!0;for(let s=0;s<t.planes.length;s++){const o=t.planes[s];let r=0;for(let t=0;t<i.length;t++)e.b2(o,i[t])>=0&&r++;if(0===r)return 0;r!==i.length&&(a=!1);}if(a)return 2;for(let e=0;e<3;e++){let i=Number.MAX_VALUE,a=-Number.MAX_VALUE;for(let s=0;s<t.points.length;s++){const o=t.points[s][e]-this.min[e];i=Math.min(i,o),a=Math.max(a,o);}if(a<0||i>this.max[e]-this.min[e])return 0}return 1}}class ba{constructor(t=0,e=0,i=0,a=0){if(isNaN(t)||t<0||isNaN(e)||e<0||isNaN(i)||i<0||isNaN(a)||a<0)throw new Error("Invalid value for edge-insets, top, bottom, left and right must all be numbers");this.top=t,this.bottom=e,this.left=i,this.right=a;}interpolate(t,i,a){return null!=i.top&&null!=t.top&&(this.top=e.y.number(t.top,i.top,a)),null!=i.bottom&&null!=t.bottom&&(this.bottom=e.y.number(t.bottom,i.bottom,a)),null!=i.left&&null!=t.left&&(this.left=e.y.number(t.left,i.left,a)),null!=i.right&&null!=t.right&&(this.right=e.y.number(t.right,i.right,a)),this}getCenter(t,i){const a=e.ac((this.left+t-this.right)/2,0,t),s=e.ac((this.top+i-this.bottom)/2,0,i);return new e.P(a,s)}equals(t){return this.top===t.top&&this.bottom===t.bottom&&this.left===t.left&&this.right===t.right}clone(){return new ba(this.top,this.bottom,this.left,this.right)}toJSON(){return {top:this.top,bottom:this.bottom,left:this.left,right:this.right}}}const wa=85.051129;class Ta{constructor(t,i,a,s,o){this.tileSize=512,this._renderWorldCopies=void 0===o||!!o,this._minZoom=t||0,this._maxZoom=i||22,this._minPitch=null==a?0:a,this._maxPitch=null==s?60:s,this.setMaxBounds(),this.width=0,this.height=0,this._center=new e.N(0,0),this._elevation=0,this.zoom=0,this.angle=0,this._fov=.6435011087932844,this._pitch=0,this._unmodified=!0,this._edgeInsets=new ba,this._posMatrixCache={},this._alignedPosMatrixCache={},this._fogMatrixCache={},this.minElevationForCurrentTile=0;}clone(){const t=new Ta(this._minZoom,this._maxZoom,this._minPitch,this.maxPitch,this._renderWorldCopies);return t.apply(this),t}apply(t){this.tileSize=t.tileSize,this.latRange=t.latRange,this.lngRange=t.lngRange,this.width=t.width,this.height=t.height,this._center=t._center,this._elevation=t._elevation,this.minElevationForCurrentTile=t.minElevationForCurrentTile,this.zoom=t.zoom,this.angle=t.angle,this._fov=t._fov,this._pitch=t._pitch,this._unmodified=t._unmodified,this._edgeInsets=t._edgeInsets.clone(),this._calcMatrices();}get minZoom(){return this._minZoom}set minZoom(t){this._minZoom!==t&&(this._minZoom=t,this.zoom=Math.max(this.zoom,t));}get maxZoom(){return this._maxZoom}set maxZoom(t){this._maxZoom!==t&&(this._maxZoom=t,this.zoom=Math.min(this.zoom,t));}get minPitch(){return this._minPitch}set minPitch(t){this._minPitch!==t&&(this._minPitch=t,this.pitch=Math.max(this.pitch,t));}get maxPitch(){return this._maxPitch}set maxPitch(t){this._maxPitch!==t&&(this._maxPitch=t,this.pitch=Math.min(this.pitch,t));}get renderWorldCopies(){return this._renderWorldCopies}set renderWorldCopies(t){void 0===t?t=!0:null===t&&(t=!1),this._renderWorldCopies=t;}get worldSize(){return this.tileSize*this.scale}get centerOffset(){return this.centerPoint._sub(this.size._div(2))}get size(){return new e.P(this.width,this.height)}get bearing(){return -this.angle/Math.PI*180}set bearing(t){const i=-e.b3(t,-180,180)*Math.PI/180;this.angle!==i&&(this._unmodified=!1,this.angle=i,this._calcMatrices(),this.rotationMatrix=function(){var t=new e.A(4);return e.A!=Float32Array&&(t[1]=0,t[2]=0),t[0]=1,t[3]=1,t}(),function(t,e,i){var a=e[0],s=e[1],o=e[2],r=e[3],n=Math.sin(i),l=Math.cos(i);t[0]=a*l+o*n,t[1]=s*l+r*n,t[2]=a*-n+o*l,t[3]=s*-n+r*l;}(this.rotationMatrix,this.rotationMatrix,this.angle));}get pitch(){return this._pitch/Math.PI*180}set pitch(t){const i=e.ac(t,this.minPitch,this.maxPitch)/180*Math.PI;this._pitch!==i&&(this._unmodified=!1,this._pitch=i,this._calcMatrices());}get fov(){return this._fov/Math.PI*180}set fov(t){t=Math.max(.01,Math.min(60,t)),this._fov!==t&&(this._unmodified=!1,this._fov=t/180*Math.PI,this._calcMatrices());}get zoom(){return this._zoom}set zoom(t){const e=Math.min(Math.max(t,this.minZoom),this.maxZoom);this._zoom!==e&&(this._unmodified=!1,this._zoom=e,this.tileZoom=Math.max(0,Math.floor(e)),this.scale=this.zoomScale(e),this._constrain(),this._calcMatrices());}get center(){return this._center}set center(t){t.lat===this._center.lat&&t.lng===this._center.lng||(this._unmodified=!1,this._center=t,this._constrain(),this._calcMatrices());}get elevation(){return this._elevation}set elevation(t){t!==this._elevation&&(this._elevation=t,this._constrain(),this._calcMatrices());}get padding(){return this._edgeInsets.toJSON()}set padding(t){this._edgeInsets.equals(t)||(this._unmodified=!1,this._edgeInsets.interpolate(this._edgeInsets,t,1),this._calcMatrices());}get centerPoint(){return this._edgeInsets.getCenter(this.width,this.height)}isPaddingEqual(t){return this._edgeInsets.equals(t)}interpolatePadding(t,e,i){this._unmodified=!1,this._edgeInsets.interpolate(t,e,i),this._constrain(),this._calcMatrices();}coveringZoomLevel(t){const e=(t.roundZoom?Math.round:Math.floor)(this.zoom+this.scaleZoom(this.tileSize/t.tileSize));return Math.max(0,e)}getVisibleUnwrappedCoordinates(t){const i=[new e.b4(0,t)];if(this._renderWorldCopies){const a=this.pointCoordinate(new e.P(0,0)),s=this.pointCoordinate(new e.P(this.width,0)),o=this.pointCoordinate(new e.P(this.width,this.height)),r=this.pointCoordinate(new e.P(0,this.height)),n=Math.floor(Math.min(a.x,s.x,o.x,r.x)),l=Math.floor(Math.max(a.x,s.x,o.x,r.x)),h=1;for(let a=n-h;a<=l+h;a++)0!==a&&i.push(new e.b4(a,t));}return i}coveringTiles(t){var i,a;let s=this.coveringZoomLevel(t);const o=s;if(void 0!==t.minzoom&&s<t.minzoom)return [];void 0!==t.maxzoom&&s>t.maxzoom&&(s=t.maxzoom);const r=this.pointCoordinate(this.getCameraPoint()),n=e.Z.fromLngLat(this.center),l=Math.pow(2,s),h=[l*r.x,l*r.y,0],c=[l*n.x,l*n.y,0],u=xa.fromInvProjectionMatrix(this.invModelViewProjectionMatrix,this.worldSize,s);let d=t.minzoom||0;!t.terrain&&this.pitch<=60&&this._edgeInsets.top<.1&&(d=s);const _=t.terrain?2/Math.min(this.tileSize,t.tileSize)*this.tileSize:3,p=t=>({aabb:new ya([t*l,0,0],[(t+1)*l,l,0]),zoom:0,x:0,y:0,wrap:t,fullyVisible:!1}),m=[],f=[],g=s,x=t.reparseOverscaled?o:s;if(this._renderWorldCopies)for(let t=1;t<=3;t++)m.push(p(-t)),m.push(p(t));for(m.push(p(0));m.length>0;){const s=m.pop(),o=s.x,r=s.y;let n=s.fullyVisible;if(!n){const t=s.aabb.intersects(u);if(0===t)continue;n=2===t;}const l=t.terrain?h:c,p=s.aabb.distanceX(l),y=s.aabb.distanceY(l),b=Math.max(Math.abs(p),Math.abs(y));if(s.zoom===g||b>_+(1<<g-s.zoom)-2&&s.zoom>=d){const t=g-s.zoom,i=h[0]-.5-(o<<t),a=h[1]-.5-(r<<t);f.push({tileID:new e.S(s.zoom===g?x:s.zoom,s.wrap,s.zoom,o,r),distanceSq:v([c[0]-.5-o,c[1]-.5-r]),tileDistanceToCamera:Math.sqrt(i*i+a*a)});}else for(let l=0;l<4;l++){const h=(o<<1)+l%2,c=(r<<1)+(l>>1),u=s.zoom+1;let d=s.aabb.quadrant(l);if(t.terrain){const o=new e.S(u,s.wrap,u,h,c),r=t.terrain.getMinMaxElevation(o),n=null!==(i=r.minElevation)&&void 0!==i?i:this.elevation,l=null!==(a=r.maxElevation)&&void 0!==a?a:this.elevation;d=new ya([d.min[0],d.min[1],n],[d.max[0],d.max[1],l]);}m.push({aabb:d,zoom:u,x:h,y:c,wrap:s.wrap,fullyVisible:n});}}return f.sort(((t,e)=>t.distanceSq-e.distanceSq)).map((t=>t.tileID))}resize(t,e){this.width=t,this.height=e,this.pixelsToGLUnits=[2/t,-2/e],this._constrain(),this._calcMatrices();}get unmodified(){return this._unmodified}zoomScale(t){return Math.pow(2,t)}scaleZoom(t){return Math.log(t)/Math.LN2}project(t){const i=e.ac(t.lat,-85.051129,wa);return new e.P(e.O(t.lng)*this.worldSize,e.Q(i)*this.worldSize)}unproject(t){return new e.Z(t.x/this.worldSize,t.y/this.worldSize).toLngLat()}get point(){return this.project(this.center)}getCameraPosition(){return {lngLat:this.pointLocation(this.getCameraPoint()),altitude:Math.cos(this._pitch)*this.cameraToCenterDistance/this._pixelPerMeter+this.elevation}}recalculateZoom(t){const i=this.elevation,a=Math.cos(this._pitch)*this.cameraToCenterDistance/this._pixelPerMeter,s=this.pointLocation(this.centerPoint,t),o=t.getElevationForLngLatZoom(s,this.tileZoom);if(!(this.elevation-o))return;const r=a+i-o,n=Math.cos(this._pitch)*this.cameraToCenterDistance/r/e.b5(1,s.lat),l=this.scaleZoom(n/this.tileSize);this._elevation=o,this._center=s,this.zoom=l;}setLocationAtPoint(t,i){const a=this.pointCoordinate(i),s=this.pointCoordinate(this.centerPoint),o=this.locationCoordinate(t),r=new e.Z(o.x-(a.x-s.x),o.y-(a.y-s.y));this.center=this.coordinateLocation(r),this._renderWorldCopies&&(this.center=this.center.wrap());}locationPoint(t,e){return e?this.coordinatePoint(this.locationCoordinate(t),e.getElevationForLngLatZoom(t,this.tileZoom),this.pixelMatrix3D):this.coordinatePoint(this.locationCoordinate(t))}pointLocation(t,e){return this.coordinateLocation(this.pointCoordinate(t,e))}locationCoordinate(t){return e.Z.fromLngLat(t)}coordinateLocation(t){return t&&t.toLngLat()}pointCoordinate(t,i){if(i){const e=i.pointCoordinate(t);if(null!=e)return e}const a=[t.x,t.y,0,1],s=[t.x,t.y,1,1];e.af(a,a,this.pixelMatrixInverse),e.af(s,s,this.pixelMatrixInverse);const o=a[3],r=s[3],n=a[1]/o,l=s[1]/r,h=a[2]/o,c=s[2]/r,u=h===c?0:(0-h)/(c-h);return new e.Z(e.y.number(a[0]/o,s[0]/r,u)/this.worldSize,e.y.number(n,l,u)/this.worldSize)}coordinatePoint(t,i=0,a=this.pixelMatrix){const s=[t.x*this.worldSize,t.y*this.worldSize,i,1];return e.af(s,s,a),new e.P(s[0]/s[3],s[1]/s[3])}getBounds(){const t=Math.max(0,this.height/2-this.getHorizon());return (new H).extend(this.pointLocation(new e.P(0,t))).extend(this.pointLocation(new e.P(this.width,t))).extend(this.pointLocation(new e.P(this.width,this.height))).extend(this.pointLocation(new e.P(0,this.height)))}getMaxBounds(){return this.latRange&&2===this.latRange.length&&this.lngRange&&2===this.lngRange.length?new H([this.lngRange[0],this.latRange[0]],[this.lngRange[1],this.latRange[1]]):null}getHorizon(){return Math.tan(Math.PI/2-this._pitch)*this.cameraToCenterDistance*.85}setMaxBounds(t){t?(this.lngRange=[t.getWest(),t.getEast()],this.latRange=[t.getSouth(),t.getNorth()],this._constrain()):(this.lngRange=null,this.latRange=[-85.051129,wa]);}calculateTileMatrix(t){const i=t.canonical,a=this.worldSize/this.zoomScale(i.z),s=i.x+Math.pow(2,i.z)*t.wrap,o=e.an(new Float64Array(16));return e.J(o,o,[s*a,i.y*a,0]),e.K(o,o,[a/e.X,a/e.X,1]),o}calculatePosMatrix(t,i=!1){const a=t.key,s=i?this._alignedPosMatrixCache:this._posMatrixCache;if(s[a])return s[a];const o=this.calculateTileMatrix(t);return e.L(o,i?this.alignedModelViewProjectionMatrix:this.modelViewProjectionMatrix,o),s[a]=new Float32Array(o),s[a]}calculateFogMatrix(t){const i=t.key,a=this._fogMatrixCache;if(a[i])return a[i];const s=this.calculateTileMatrix(t);return e.L(s,this.fogMatrix,s),a[i]=new Float32Array(s),a[i]}customLayerMatrix(){return this.mercatorMatrix.slice()}getConstrained(t,i){i=e.ac(+i,this.minZoom,this.maxZoom);const a={center:new e.N(t.lng,t.lat),zoom:i};let s=this.lngRange;if(!this._renderWorldCopies&&null===s){const t=180-1e-10;s=[-t,t];}const o=this.tileSize*this.zoomScale(a.zoom);let r=0,n=o,l=0,h=o,c=0,u=0;const{x:d,y:_}=this.size;if(this.latRange){const t=this.latRange;r=e.Q(t[1])*o,n=e.Q(t[0])*o,n-r<_&&(c=_/(n-r));}s&&(l=e.b3(e.O(s[0])*o,0,o),h=e.b3(e.O(s[1])*o,0,o),h<l&&(h+=o),h-l<d&&(u=d/(h-l)));const{x:p,y:m}=this.project.call({worldSize:o},t);let f,g;const v=Math.max(u||0,c||0);if(v){const t=new e.P(u?(h+l)/2:p,c?(n+r)/2:m);return a.center=this.unproject.call({worldSize:o},t).wrap(),a.zoom+=this.scaleZoom(v),a}if(this.latRange){const t=_/2;m-t<r&&(g=r+t),m+t>n&&(g=n-t);}if(s){const t=(l+h)/2;let i=p;this._renderWorldCopies&&(i=e.b3(p,t-o/2,t+o/2));const a=d/2;i-a<l&&(f=l+a),i+a>h&&(f=h-a);}if(void 0!==f||void 0!==g){const t=new e.P(null!=f?f:p,null!=g?g:m);a.center=this.unproject.call({worldSize:o},t).wrap();}return a}_constrain(){if(!this.center||!this.width||!this.height||this._constraining)return;this._constraining=!0;const t=this._unmodified,{center:e,zoom:i}=this.getConstrained(this.center,this.zoom);this.center=e,this.zoom=i,this._unmodified=t,this._constraining=!1;}_calcMatrices(){if(!this.height)return;const t=this.centerOffset,i=this.point.x,a=this.point.y;this.cameraToCenterDistance=.5/Math.tan(this._fov/2)*this.height,this._pixelPerMeter=e.b5(1,this.center.lat)*this.worldSize;let s=e.an(new Float64Array(16));e.K(s,s,[this.width/2,-this.height/2,1]),e.J(s,s,[1,-1,0]),this.labelPlaneMatrix=s,s=e.an(new Float64Array(16)),e.K(s,s,[1,-1,1]),e.J(s,s,[-1,-1,0]),e.K(s,s,[2/this.width,2/this.height,1]),this.glCoordMatrix=s;const o=this.cameraToCenterDistance+this._elevation*this._pixelPerMeter/Math.cos(this._pitch),r=Math.min(this.elevation,this.minElevationForCurrentTile),n=o-r*this._pixelPerMeter/Math.cos(this._pitch),l=r<0?n:o,h=Math.PI/2+this._pitch,c=this._fov*(.5+t.y/this.height),u=Math.sin(c)*l/Math.sin(e.ac(Math.PI-h-c,.01,Math.PI-.01)),d=this.getHorizon(),_=2*Math.atan(d/this.cameraToCenterDistance)*(.5+t.y/(2*d)),p=Math.sin(_)*l/Math.sin(e.ac(Math.PI-h-_,.01,Math.PI-.01)),m=Math.min(u,p);this.farZ=1.01*(Math.cos(Math.PI/2-this._pitch)*m+l),this.nearZ=this.height/50,s=new Float64Array(16),e.b6(s,this._fov,this.width/this.height,this.nearZ,this.farZ),s[8]=2*-t.x/this.width,s[9]=2*t.y/this.height,this.projectionMatrix=e.ae(s),e.K(s,s,[1,-1,1]),e.J(s,s,[0,0,-this.cameraToCenterDistance]),e.b7(s,s,this._pitch),e.ad(s,s,this.angle),e.J(s,s,[-i,-a,0]),this.mercatorMatrix=e.K([],s,[this.worldSize,this.worldSize,this.worldSize]),e.K(s,s,[1,1,this._pixelPerMeter]),this.pixelMatrix=e.L(new Float64Array(16),this.labelPlaneMatrix,s),e.J(s,s,[0,0,-this.elevation]),this.modelViewProjectionMatrix=s,this.invModelViewProjectionMatrix=e.as([],s),this.fogMatrix=new Float64Array(16),e.b6(this.fogMatrix,this._fov,this.width/this.height,o,this.farZ),this.fogMatrix[8]=2*-t.x/this.width,this.fogMatrix[9]=2*t.y/this.height,e.K(this.fogMatrix,this.fogMatrix,[1,-1,1]),e.J(this.fogMatrix,this.fogMatrix,[0,0,-this.cameraToCenterDistance]),e.b7(this.fogMatrix,this.fogMatrix,this._pitch),e.ad(this.fogMatrix,this.fogMatrix,this.angle),e.J(this.fogMatrix,this.fogMatrix,[-i,-a,0]),e.K(this.fogMatrix,this.fogMatrix,[1,1,this._pixelPerMeter]),e.J(this.fogMatrix,this.fogMatrix,[0,0,-this.elevation]),this.pixelMatrix3D=e.L(new Float64Array(16),this.labelPlaneMatrix,s);const f=this.width%2/2,g=this.height%2/2,v=Math.cos(this.angle),x=Math.sin(this.angle),y=i-Math.round(i)+v*f+x*g,b=a-Math.round(a)+v*g+x*f,w=new Float64Array(s);if(e.J(w,w,[y>.5?y-1:y,b>.5?b-1:b,0]),this.alignedModelViewProjectionMatrix=w,s=e.as(new Float64Array(16),this.pixelMatrix),!s)throw new Error("failed to invert matrix");this.pixelMatrixInverse=s,this._posMatrixCache={},this._alignedPosMatrixCache={},this._fogMatrixCache={};}maxPitchScaleFactor(){if(!this.pixelMatrixInverse)return 1;const t=this.pointCoordinate(new e.P(0,0)),i=[t.x*this.worldSize,t.y*this.worldSize,0,1];return e.af(i,i,this.pixelMatrix)[3]/this.cameraToCenterDistance}getCameraPoint(){const t=Math.tan(this._pitch)*(this.cameraToCenterDistance||1);return this.centerPoint.add(new e.P(0,t))}getCameraQueryGeometry(t){const i=this.getCameraPoint();if(1===t.length)return [t[0],i];{let a=i.x,s=i.y,o=i.x,r=i.y;for(const e of t)a=Math.min(a,e.x),s=Math.min(s,e.y),o=Math.max(o,e.x),r=Math.max(r,e.y);return [new e.P(a,s),new e.P(o,s),new e.P(o,r),new e.P(a,r),new e.P(a,s)]}}lngLatToCameraDepth(t,i){const a=this.locationCoordinate(t),s=[a.x*this.worldSize,a.y*this.worldSize,i,1];return e.af(s,s,this.modelViewProjectionMatrix),s[2]/s[3]}}function Ia(t,e){let i,a=!1,s=null,o=null;const r=()=>{s=null,a&&(t.apply(o,i),s=setTimeout(r,e),a=!1);};return (...t)=>(a=!0,o=this,i=t,s||r(),s)}class Ea{constructor(t){this._getCurrentHash=()=>{const t=window.location.hash.replace("#","");if(this._hashName){let e;return t.split("&").map((t=>t.split("="))).forEach((t=>{t[0]===this._hashName&&(e=t);})),(e&&e[1]||"").split("/")}return t.split("/")},this._onHashChange=()=>{const t=this._getCurrentHash();if(t.length>=3&&!t.some((t=>isNaN(t)))){const e=this._map.dragRotate.isEnabled()&&this._map.touchZoomRotate.isEnabled()?+(t[3]||0):this._map.getBearing();return this._map.jumpTo({center:[+t[2],+t[1]],zoom:+t[0],bearing:e,pitch:+(t[4]||0)}),!0}return !1},this._updateHashUnthrottled=()=>{const t=window.location.href.replace(/(#.*)?$/,this.getHashString());window.history.replaceState(window.history.state,null,t);},this._removeHash=()=>{const t=this._getCurrentHash();if(0===t.length)return;const e=t.join("/");let i=e;i.split("&").length>0&&(i=i.split("&")[0]),this._hashName&&(i=`${this._hashName}=${e}`);let a=window.location.hash.replace(i,"");a.startsWith("#&")?a=a.slice(0,1)+a.slice(2):"#"===a&&(a="");let s=window.location.href.replace(/(#.+)?$/,a);s=s.replace("&&","&"),window.history.replaceState(window.history.state,null,s);},this._updateHash=Ia(this._updateHashUnthrottled,300),this._hashName=t&&encodeURIComponent(t);}addTo(t){return this._map=t,addEventListener("hashchange",this._onHashChange,!1),this._map.on("moveend",this._updateHash),this}remove(){return removeEventListener("hashchange",this._onHashChange,!1),this._map.off("moveend",this._updateHash),clearTimeout(this._updateHash()),this._removeHash(),delete this._map,this}getHashString(t){const e=this._map.getCenter(),i=Math.round(100*this._map.getZoom())/100,a=Math.ceil((i*Math.LN2+Math.log(512/360/.5))/Math.LN10),s=Math.pow(10,a),o=Math.round(e.lng*s)/s,r=Math.round(e.lat*s)/s,n=this._map.getBearing(),l=this._map.getPitch();let h="";if(h+=t?`/${o}/${r}/${i}`:`${i}/${r}/${o}`,(n||l)&&(h+="/"+Math.round(10*n)/10),l&&(h+=`/${Math.round(l)}`),this._hashName){const t=this._hashName;let e=!1;const i=window.location.hash.slice(1).split("&").map((i=>{const a=i.split("=")[0];return a===t?(e=!0,`${a}=${h}`):i})).filter((t=>t));return e||i.push(`${t}=${h}`),`#${i.join("&")}`}return `#${h}`}}const Pa={linearity:.3,easing:e.b8(0,0,.3,1)},Ca=e.e({deceleration:2500,maxSpeed:1400},Pa),Sa=e.e({deceleration:20,maxSpeed:1400},Pa),za=e.e({deceleration:1e3,maxSpeed:360},Pa),Da=e.e({deceleration:1e3,maxSpeed:90},Pa);class Ma{constructor(t){this._map=t,this.clear();}clear(){this._inertiaBuffer=[];}record(t){this._drainInertiaBuffer(),this._inertiaBuffer.push({time:o.now(),settings:t});}_drainInertiaBuffer(){const t=this._inertiaBuffer,e=o.now();for(;t.length>0&&e-t[0].time>160;)t.shift();}_onMoveEnd(t){if(this._drainInertiaBuffer(),this._inertiaBuffer.length<2)return;const i={zoom:0,bearing:0,pitch:0,pan:new e.P(0,0),pinchAround:void 0,around:void 0};for(const{settings:t}of this._inertiaBuffer)i.zoom+=t.zoomDelta||0,i.bearing+=t.bearingDelta||0,i.pitch+=t.pitchDelta||0,t.panDelta&&i.pan._add(t.panDelta),t.around&&(i.around=t.around),t.pinchAround&&(i.pinchAround=t.pinchAround);const a=this._inertiaBuffer[this._inertiaBuffer.length-1].time-this._inertiaBuffer[0].time,s={};if(i.pan.mag()){const o=Ra(i.pan.mag(),a,e.e({},Ca,t||{}));s.offset=i.pan.mult(o.amount/i.pan.mag()),s.center=this._map.transform.center,Aa(s,o);}if(i.zoom){const t=Ra(i.zoom,a,Sa);s.zoom=this._map.transform.zoom+t.amount,Aa(s,t);}if(i.bearing){const t=Ra(i.bearing,a,za);s.bearing=this._map.transform.bearing+e.ac(t.amount,-179,179),Aa(s,t);}if(i.pitch){const t=Ra(i.pitch,a,Da);s.pitch=this._map.transform.pitch+t.amount,Aa(s,t);}if(s.zoom||s.bearing){const t=void 0===i.pinchAround?i.around:i.pinchAround;s.around=t?this._map.unproject(t):this._map.getCenter();}return this.clear(),e.e(s,{noMoveStart:!0})}}function Aa(t,e){(!t.duration||t.duration<e.duration)&&(t.duration=e.duration,t.easing=e.easing);}function Ra(t,i,a){const{maxSpeed:s,linearity:o,deceleration:r}=a,n=e.ac(t*o/(i/1e3),-s,s),l=Math.abs(n)/(r*o);return {easing:a.easing,duration:1e3*l,amount:n*(l/2)}}class ka extends e.k{preventDefault(){this._defaultPrevented=!0;}get defaultPrevented(){return this._defaultPrevented}constructor(t,i,a,s={}){const o=r.mousePos(i.getCanvas(),a),n=i.unproject(o);super(t,e.e({point:o,lngLat:n,originalEvent:a},s)),this._defaultPrevented=!1,this.target=i;}}class La extends e.k{preventDefault(){this._defaultPrevented=!0;}get defaultPrevented(){return this._defaultPrevented}constructor(t,i,a){const s="touchend"===t?a.changedTouches:a.touches,o=r.touchPos(i.getCanvasContainer(),s),n=o.map((t=>i.unproject(t))),l=o.reduce(((t,e,i,a)=>t.add(e.div(a.length))),new e.P(0,0));super(t,{points:o,point:l,lngLats:n,lngLat:i.unproject(l),originalEvent:a}),this._defaultPrevented=!1;}}class Fa extends e.k{preventDefault(){this._defaultPrevented=!0;}get defaultPrevented(){return this._defaultPrevented}constructor(t,e,i){super(t,{originalEvent:i}),this._defaultPrevented=!1;}}class Ba{constructor(t,e){this._map=t,this._clickTolerance=e.clickTolerance;}reset(){delete this._mousedownPos;}wheel(t){return this._firePreventable(new Fa(t.type,this._map,t))}mousedown(t,e){return this._mousedownPos=e,this._firePreventable(new ka(t.type,this._map,t))}mouseup(t){this._map.fire(new ka(t.type,this._map,t));}click(t,e){this._mousedownPos&&this._mousedownPos.dist(e)>=this._clickTolerance||this._map.fire(new ka(t.type,this._map,t));}dblclick(t){return this._firePreventable(new ka(t.type,this._map,t))}mouseover(t){this._map.fire(new ka(t.type,this._map,t));}mouseout(t){this._map.fire(new ka(t.type,this._map,t));}touchstart(t){return this._firePreventable(new La(t.type,this._map,t))}touchmove(t){this._map.fire(new La(t.type,this._map,t));}touchend(t){this._map.fire(new La(t.type,this._map,t));}touchcancel(t){this._map.fire(new La(t.type,this._map,t));}_firePreventable(t){if(this._map.fire(t),t.defaultPrevented)return {}}isEnabled(){return !0}isActive(){return !1}enable(){}disable(){}}class Oa{constructor(t){this._map=t;}reset(){this._delayContextMenu=!1,this._ignoreContextMenu=!0,delete this._contextMenuEvent;}mousemove(t){this._map.fire(new ka(t.type,this._map,t));}mousedown(){this._delayContextMenu=!0,this._ignoreContextMenu=!1;}mouseup(){this._delayContextMenu=!1,this._contextMenuEvent&&(this._map.fire(new ka("contextmenu",this._map,this._contextMenuEvent)),delete this._contextMenuEvent);}contextmenu(t){this._delayContextMenu?this._contextMenuEvent=t:this._ignoreContextMenu||this._map.fire(new ka(t.type,this._map,t)),this._map.listens("contextmenu")&&t.preventDefault();}isEnabled(){return !0}isActive(){return !1}enable(){}disable(){}}class Na{constructor(t){this._map=t;}get transform(){return this._map._requestedCameraState||this._map.transform}get center(){return {lng:this.transform.center.lng,lat:this.transform.center.lat}}get zoom(){return this.transform.zoom}get pitch(){return this.transform.pitch}get bearing(){return this.transform.bearing}unproject(t){return this.transform.pointLocation(e.P.convert(t),this._map.terrain)}}class Ua{constructor(t,e){this._map=t,this._tr=new Na(t),this._el=t.getCanvasContainer(),this._container=t.getContainer(),this._clickTolerance=e.clickTolerance||1;}isEnabled(){return !!this._enabled}isActive(){return !!this._active}enable(){this.isEnabled()||(this._enabled=!0);}disable(){this.isEnabled()&&(this._enabled=!1);}mousedown(t,e){this.isEnabled()&&t.shiftKey&&0===t.button&&(r.disableDrag(),this._startPos=this._lastPos=e,this._active=!0);}mousemoveWindow(t,e){if(!this._active)return;const i=e;if(this._lastPos.equals(i)||!this._box&&i.dist(this._startPos)<this._clickTolerance)return;const a=this._startPos;this._lastPos=i,this._box||(this._box=r.create("div","maplibregl-boxzoom",this._container),this._container.classList.add("maplibregl-crosshair"),this._fireEvent("boxzoomstart",t));const s=Math.min(a.x,i.x),o=Math.max(a.x,i.x),n=Math.min(a.y,i.y),l=Math.max(a.y,i.y);r.setTransform(this._box,`translate(${s}px,${n}px)`),this._box.style.width=o-s+"px",this._box.style.height=l-n+"px";}mouseupWindow(t,i){if(!this._active)return;if(0!==t.button)return;const a=this._startPos,s=i;if(this.reset(),r.suppressClick(),a.x!==s.x||a.y!==s.y)return this._map.fire(new e.k("boxzoomend",{originalEvent:t})),{cameraAnimation:t=>t.fitScreenCoordinates(a,s,this._tr.bearing,{linear:!0})};this._fireEvent("boxzoomcancel",t);}keydown(t){this._active&&27===t.keyCode&&(this.reset(),this._fireEvent("boxzoomcancel",t));}reset(){this._active=!1,this._container.classList.remove("maplibregl-crosshair"),this._box&&(r.remove(this._box),this._box=null),r.enableDrag(),delete this._startPos,delete this._lastPos;}_fireEvent(t,i){return this._map.fire(new e.k(t,{originalEvent:i}))}}function ja(t,e){if(t.length!==e.length)throw new Error(`The number of touches and points are not equal - touches ${t.length}, points ${e.length}`);const i={};for(let a=0;a<t.length;a++)i[t[a].identifier]=e[a];return i}class Za{constructor(t){this.reset(),this.numTouches=t.numTouches;}reset(){delete this.centroid,delete this.startTime,delete this.touches,this.aborted=!1;}touchstart(t,i,a){(this.centroid||a.length>this.numTouches)&&(this.aborted=!0),this.aborted||(void 0===this.startTime&&(this.startTime=t.timeStamp),a.length===this.numTouches&&(this.centroid=function(t){const i=new e.P(0,0);for(const e of t)i._add(e);return i.div(t.length)}(i),this.touches=ja(a,i)));}touchmove(t,e,i){if(this.aborted||!this.centroid)return;const a=ja(i,e);for(const t in this.touches){const e=a[t];(!e||e.dist(this.touches[t])>30)&&(this.aborted=!0);}}touchend(t,e,i){if((!this.centroid||t.timeStamp-this.startTime>500)&&(this.aborted=!0),0===i.length){const t=!this.aborted&&this.centroid;if(this.reset(),t)return t}}}class qa{constructor(t){this.singleTap=new Za(t),this.numTaps=t.numTaps,this.reset();}reset(){this.lastTime=1/0,delete this.lastTap,this.count=0,this.singleTap.reset();}touchstart(t,e,i){this.singleTap.touchstart(t,e,i);}touchmove(t,e,i){this.singleTap.touchmove(t,e,i);}touchend(t,e,i){const a=this.singleTap.touchend(t,e,i);if(a){const e=t.timeStamp-this.lastTime<500,i=!this.lastTap||this.lastTap.dist(a)<30;if(e&&i||this.reset(),this.count++,this.lastTime=t.timeStamp,this.lastTap=a,this.count===this.numTaps)return this.reset(),a}}}class Va{constructor(t){this._tr=new Na(t),this._zoomIn=new qa({numTouches:1,numTaps:2}),this._zoomOut=new qa({numTouches:2,numTaps:1}),this.reset();}reset(){this._active=!1,this._zoomIn.reset(),this._zoomOut.reset();}touchstart(t,e,i){this._zoomIn.touchstart(t,e,i),this._zoomOut.touchstart(t,e,i);}touchmove(t,e,i){this._zoomIn.touchmove(t,e,i),this._zoomOut.touchmove(t,e,i);}touchend(t,e,i){const a=this._zoomIn.touchend(t,e,i),s=this._zoomOut.touchend(t,e,i),o=this._tr;return a?(this._active=!0,t.preventDefault(),setTimeout((()=>this.reset()),0),{cameraAnimation:e=>e.easeTo({duration:300,zoom:o.zoom+1,around:o.unproject(a)},{originalEvent:t})}):s?(this._active=!0,t.preventDefault(),setTimeout((()=>this.reset()),0),{cameraAnimation:e=>e.easeTo({duration:300,zoom:o.zoom-1,around:o.unproject(s)},{originalEvent:t})}):void 0}touchcancel(){this.reset();}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}}class Ga{constructor(t){this._enabled=!!t.enable,this._moveStateManager=t.moveStateManager,this._clickTolerance=t.clickTolerance||1,this._moveFunction=t.move,this._activateOnStart=!!t.activateOnStart,t.assignEvents(this),this.reset();}reset(t){this._active=!1,this._moved=!1,delete this._lastPoint,this._moveStateManager.endMove(t);}_move(...t){const e=this._moveFunction(...t);if(e.bearingDelta||e.pitchDelta||e.around||e.panDelta)return this._active=!0,e}dragStart(t,e){this.isEnabled()&&!this._lastPoint&&this._moveStateManager.isValidStartEvent(t)&&(this._moveStateManager.startMove(t),this._lastPoint=e.length?e[0]:e,this._activateOnStart&&this._lastPoint&&(this._active=!0));}dragMove(t,e){if(!this.isEnabled())return;const i=this._lastPoint;if(!i)return;if(t.preventDefault(),!this._moveStateManager.isValidMoveEvent(t))return void this.reset(t);const a=e.length?e[0]:e;return !this._moved&&a.dist(i)<this._clickTolerance?void 0:(this._moved=!0,this._lastPoint=a,this._move(i,a))}dragEnd(t){this.isEnabled()&&this._lastPoint&&this._moveStateManager.isValidEndEvent(t)&&(this._moved&&r.suppressClick(),this.reset(t));}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}getClickTolerance(){return this._clickTolerance}}const Ha={0:1,2:2};class Wa{constructor(t){this._correctEvent=t.checkCorrectEvent;}startMove(t){const e=r.mouseButton(t);this._eventButton=e;}endMove(t){delete this._eventButton;}isValidStartEvent(t){return this._correctEvent(t)}isValidMoveEvent(t){return !function(t,e){const i=Ha[e];return void 0===t.buttons||(t.buttons&i)!==i}(t,this._eventButton)}isValidEndEvent(t){return r.mouseButton(t)===this._eventButton}}class $a{constructor(){this._firstTouch=void 0;}_isOneFingerTouch(t){return 1===t.targetTouches.length}_isSameTouchEvent(t){return t.targetTouches[0].identifier===this._firstTouch}startMove(t){this._firstTouch=t.targetTouches[0].identifier;}endMove(t){delete this._firstTouch;}isValidStartEvent(t){return this._isOneFingerTouch(t)}isValidMoveEvent(t){return this._isOneFingerTouch(t)&&this._isSameTouchEvent(t)}isValidEndEvent(t){return this._isOneFingerTouch(t)&&this._isSameTouchEvent(t)}}const Xa=t=>{t.mousedown=t.dragStart,t.mousemoveWindow=t.dragMove,t.mouseup=t.dragEnd,t.contextmenu=t=>{t.preventDefault();};},Ka=({enable:t,clickTolerance:e,bearingDegreesPerPixelMoved:i=.8})=>{const a=new Wa({checkCorrectEvent:t=>0===r.mouseButton(t)&&t.ctrlKey||2===r.mouseButton(t)});return new Ga({clickTolerance:e,move:(t,e)=>({bearingDelta:(e.x-t.x)*i}),moveStateManager:a,enable:t,assignEvents:Xa})},Ja=({enable:t,clickTolerance:e,pitchDegreesPerPixelMoved:i=-.5})=>{const a=new Wa({checkCorrectEvent:t=>0===r.mouseButton(t)&&t.ctrlKey||2===r.mouseButton(t)});return new Ga({clickTolerance:e,move:(t,e)=>({pitchDelta:(e.y-t.y)*i}),moveStateManager:a,enable:t,assignEvents:Xa})};class Ya{constructor(t,e){this._clickTolerance=t.clickTolerance||1,this._map=e,this.reset();}reset(){this._active=!1,this._touches={},this._sum=new e.P(0,0);}_shouldBePrevented(t){return t<(this._map.cooperativeGestures.isEnabled()?2:1)}touchstart(t,e,i){return this._calculateTransform(t,e,i)}touchmove(t,e,i){if(this._active){if(!this._shouldBePrevented(i.length))return t.preventDefault(),this._calculateTransform(t,e,i);this._map.cooperativeGestures.notifyGestureBlocked("touch_pan",t);}}touchend(t,e,i){this._calculateTransform(t,e,i),this._active&&this._shouldBePrevented(i.length)&&this.reset();}touchcancel(){this.reset();}_calculateTransform(t,i,a){a.length>0&&(this._active=!0);const s=ja(a,i),o=new e.P(0,0),r=new e.P(0,0);let n=0;for(const t in s){const e=s[t],i=this._touches[t];i&&(o._add(e),r._add(e.sub(i)),n++,s[t]=e);}if(this._touches=s,this._shouldBePrevented(n)||!r.mag())return;const l=r.div(n);return this._sum._add(l),this._sum.mag()<this._clickTolerance?void 0:{around:o.div(n),panDelta:l}}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}}class Qa{constructor(){this.reset();}reset(){this._active=!1,delete this._firstTwoTouches;}touchstart(t,e,i){this._firstTwoTouches||i.length<2||(this._firstTwoTouches=[i[0].identifier,i[1].identifier],this._start([e[0],e[1]]));}touchmove(t,e,i){if(!this._firstTwoTouches)return;t.preventDefault();const[a,s]=this._firstTwoTouches,o=ts(i,e,a),r=ts(i,e,s);if(!o||!r)return;const n=this._aroundCenter?null:o.add(r).div(2);return this._move([o,r],n,t)}touchend(t,e,i){if(!this._firstTwoTouches)return;const[a,s]=this._firstTwoTouches,o=ts(i,e,a),n=ts(i,e,s);o&&n||(this._active&&r.suppressClick(),this.reset());}touchcancel(){this.reset();}enable(t){this._enabled=!0,this._aroundCenter=!!t&&"center"===t.around;}disable(){this._enabled=!1,this.reset();}isEnabled(){return !!this._enabled}isActive(){return !!this._active}}function ts(t,e,i){for(let a=0;a<t.length;a++)if(t[a].identifier===i)return e[a]}function es(t,e){return Math.log(t/e)/Math.LN2}class is extends Qa{reset(){super.reset(),delete this._distance,delete this._startDistance;}_start(t){this._startDistance=this._distance=t[0].dist(t[1]);}_move(t,e){const i=this._distance;if(this._distance=t[0].dist(t[1]),this._active||!(Math.abs(es(this._distance,this._startDistance))<.1))return this._active=!0,{zoomDelta:es(this._distance,i),pinchAround:e}}}function as(t,e){return 180*t.angleWith(e)/Math.PI}class ss extends Qa{reset(){super.reset(),delete this._minDiameter,delete this._startVector,delete this._vector;}_start(t){this._startVector=this._vector=t[0].sub(t[1]),this._minDiameter=t[0].dist(t[1]);}_move(t,e,i){const a=this._vector;if(this._vector=t[0].sub(t[1]),this._active||!this._isBelowThreshold(this._vector))return this._active=!0,{bearingDelta:as(this._vector,a),pinchAround:e}}_isBelowThreshold(t){this._minDiameter=Math.min(this._minDiameter,t.mag());const e=25/(Math.PI*this._minDiameter)*360,i=as(t,this._startVector);return Math.abs(i)<e}}function os(t){return Math.abs(t.y)>Math.abs(t.x)}class rs extends Qa{constructor(t){super(),this._currentTouchCount=0,this._map=t;}reset(){super.reset(),this._valid=void 0,delete this._firstMove,delete this._lastPoints;}touchstart(t,e,i){super.touchstart(t,e,i),this._currentTouchCount=i.length;}_start(t){this._lastPoints=t,os(t[0].sub(t[1]))&&(this._valid=!1);}_move(t,e,i){if(this._map.cooperativeGestures.isEnabled()&&this._currentTouchCount<3)return;const a=t[0].sub(this._lastPoints[0]),s=t[1].sub(this._lastPoints[1]);return this._valid=this.gestureBeginsVertically(a,s,i.timeStamp),this._valid?(this._lastPoints=t,this._active=!0,{pitchDelta:(a.y+s.y)/2*-.5}):void 0}gestureBeginsVertically(t,e,i){if(void 0!==this._valid)return this._valid;const a=t.mag()>=2,s=e.mag()>=2;if(!a&&!s)return;if(!a||!s)return void 0===this._firstMove&&(this._firstMove=i),i-this._firstMove<100&&void 0;const o=t.y>0==e.y>0;return os(t)&&os(e)&&o}}const ns={panStep:100,bearingStep:15,pitchStep:10};class ls{constructor(t){this._tr=new Na(t);const e=ns;this._panStep=e.panStep,this._bearingStep=e.bearingStep,this._pitchStep=e.pitchStep,this._rotationDisabled=!1;}reset(){this._active=!1;}keydown(t){if(t.altKey||t.ctrlKey||t.metaKey)return;let e=0,i=0,a=0,s=0,o=0;switch(t.keyCode){case 61:case 107:case 171:case 187:e=1;break;case 189:case 109:case 173:e=-1;break;case 37:t.shiftKey?i=-1:(t.preventDefault(),s=-1);break;case 39:t.shiftKey?i=1:(t.preventDefault(),s=1);break;case 38:t.shiftKey?a=1:(t.preventDefault(),o=-1);break;case 40:t.shiftKey?a=-1:(t.preventDefault(),o=1);break;default:return}return this._rotationDisabled&&(i=0,a=0),{cameraAnimation:r=>{const n=this._tr;r.easeTo({duration:300,easeId:"keyboardHandler",easing:hs,zoom:e?Math.round(n.zoom)+e*(t.shiftKey?2:1):n.zoom,bearing:n.bearing+i*this._bearingStep,pitch:n.pitch+a*this._pitchStep,offset:[-s*this._panStep,-o*this._panStep],center:n.center},{originalEvent:t});}}}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}disableRotation(){this._rotationDisabled=!0;}enableRotation(){this._rotationDisabled=!1;}}function hs(t){return t*(2-t)}const cs=4.000244140625;class us{constructor(t,e){this._onTimeout=t=>{this._type="wheel",this._delta-=this._lastValue,this._active||this._start(t);},this._map=t,this._tr=new Na(t),this._triggerRenderFrame=e,this._delta=0,this._defaultZoomRate=.01,this._wheelZoomRate=.0022222222222222222;}setZoomRate(t){this._defaultZoomRate=t;}setWheelZoomRate(t){this._wheelZoomRate=t;}isEnabled(){return !!this._enabled}isActive(){return !!this._active||void 0!==this._finishTimeout}isZooming(){return !!this._zooming}enable(t){this.isEnabled()||(this._enabled=!0,this._aroundCenter=!!t&&"center"===t.around);}disable(){this.isEnabled()&&(this._enabled=!1);}_shouldBePrevented(t){return !!this._map.cooperativeGestures.isEnabled()&&!(t.ctrlKey||this._map.cooperativeGestures.isBypassed(t))}wheel(t){if(!this.isEnabled())return;if(this._shouldBePrevented(t))return void this._map.cooperativeGestures.notifyGestureBlocked("wheel_zoom",t);let e=t.deltaMode===WheelEvent.DOM_DELTA_LINE?40*t.deltaY:t.deltaY;const i=o.now(),a=i-(this._lastWheelEventTime||0);this._lastWheelEventTime=i,0!==e&&e%cs==0?this._type="wheel":0!==e&&Math.abs(e)<4?this._type="trackpad":a>400?(this._type=null,this._lastValue=e,this._timeout=setTimeout(this._onTimeout,40,t)):this._type||(this._type=Math.abs(a*e)<200?"trackpad":"wheel",this._timeout&&(clearTimeout(this._timeout),this._timeout=null,e+=this._lastValue)),t.shiftKey&&e&&(e/=4),this._type&&(this._lastWheelEvent=t,this._delta-=e,this._active||this._start(t)),t.preventDefault();}_start(t){if(!this._delta)return;this._frameId&&(this._frameId=null),this._active=!0,this.isZooming()||(this._zooming=!0),this._finishTimeout&&(clearTimeout(this._finishTimeout),delete this._finishTimeout);const i=r.mousePos(this._map.getCanvas(),t),a=this._tr;this._around=i.y>a.transform.height/2-a.transform.getHorizon()?e.N.convert(this._aroundCenter?a.center:a.unproject(i)):e.N.convert(a.center),this._aroundPoint=a.transform.locationPoint(this._around),this._frameId||(this._frameId=!0,this._triggerRenderFrame());}renderFrame(){if(!this._frameId)return;if(this._frameId=null,!this.isActive())return;const t=this._tr.transform;if(0!==this._delta){const e="wheel"===this._type&&Math.abs(this._delta)>cs?this._wheelZoomRate:this._defaultZoomRate;let i=2/(1+Math.exp(-Math.abs(this._delta*e)));this._delta<0&&0!==i&&(i=1/i);const a="number"==typeof this._targetZoom?t.zoomScale(this._targetZoom):t.scale;this._targetZoom=Math.min(t.maxZoom,Math.max(t.minZoom,t.scaleZoom(a*i))),"wheel"===this._type&&(this._startZoom=t.zoom,this._easing=this._smoothOutEasing(200)),this._delta=0;}const i="number"==typeof this._targetZoom?this._targetZoom:t.zoom,a=this._startZoom,s=this._easing;let r,n=!1;const l=o.now()-this._lastWheelEventTime;if("wheel"===this._type&&a&&s&&l){const t=Math.min(l/200,1),o=s(t);r=e.y.number(a,i,o),t<1?this._frameId||(this._frameId=!0):n=!0;}else r=i,n=!0;return this._active=!0,n&&(this._active=!1,this._finishTimeout=setTimeout((()=>{this._zooming=!1,this._triggerRenderFrame(),delete this._targetZoom,delete this._finishTimeout;}),200)),{noInertia:!0,needsRenderFrame:!n,zoomDelta:r-t.zoom,around:this._aroundPoint,originalEvent:this._lastWheelEvent}}_smoothOutEasing(t){let i=e.b9;if(this._prevEase){const t=this._prevEase,a=(o.now()-t.start)/t.duration,s=t.easing(a+.01)-t.easing(a),r=.27/Math.sqrt(s*s+1e-4)*.01,n=Math.sqrt(.0729-r*r);i=e.b8(r,n,.25,1);}return this._prevEase={start:o.now(),duration:t,easing:i},i}reset(){this._active=!1,this._zooming=!1,delete this._targetZoom,this._finishTimeout&&(clearTimeout(this._finishTimeout),delete this._finishTimeout);}}class ds{constructor(t,e){this._clickZoom=t,this._tapZoom=e;}enable(){this._clickZoom.enable(),this._tapZoom.enable();}disable(){this._clickZoom.disable(),this._tapZoom.disable();}isEnabled(){return this._clickZoom.isEnabled()&&this._tapZoom.isEnabled()}isActive(){return this._clickZoom.isActive()||this._tapZoom.isActive()}}class _s{constructor(t){this._tr=new Na(t),this.reset();}reset(){this._active=!1;}dblclick(t,e){return t.preventDefault(),{cameraAnimation:i=>{i.easeTo({duration:300,zoom:this._tr.zoom+(t.shiftKey?-1:1),around:this._tr.unproject(e)},{originalEvent:t});}}}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}}class ps{constructor(){this._tap=new qa({numTouches:1,numTaps:1}),this.reset();}reset(){this._active=!1,delete this._swipePoint,delete this._swipeTouch,delete this._tapTime,delete this._tapPoint,this._tap.reset();}touchstart(t,e,i){if(!this._swipePoint)if(this._tapTime){const a=e[0],s=t.timeStamp-this._tapTime<500,o=this._tapPoint.dist(a)<30;s&&o?i.length>0&&(this._swipePoint=a,this._swipeTouch=i[0].identifier):this.reset();}else this._tap.touchstart(t,e,i);}touchmove(t,e,i){if(this._tapTime){if(this._swipePoint){if(i[0].identifier!==this._swipeTouch)return;const a=e[0],s=a.y-this._swipePoint.y;return this._swipePoint=a,t.preventDefault(),this._active=!0,{zoomDelta:s/128}}}else this._tap.touchmove(t,e,i);}touchend(t,e,i){if(this._tapTime)this._swipePoint&&0===i.length&&this.reset();else {const a=this._tap.touchend(t,e,i);a&&(this._tapTime=t.timeStamp,this._tapPoint=a);}}touchcancel(){this.reset();}enable(){this._enabled=!0;}disable(){this._enabled=!1,this.reset();}isEnabled(){return this._enabled}isActive(){return this._active}}class ms{constructor(t,e,i){this._el=t,this._mousePan=e,this._touchPan=i;}enable(t){this._inertiaOptions=t||{},this._mousePan.enable(),this._touchPan.enable(),this._el.classList.add("maplibregl-touch-drag-pan");}disable(){this._mousePan.disable(),this._touchPan.disable(),this._el.classList.remove("maplibregl-touch-drag-pan");}isEnabled(){return this._mousePan.isEnabled()&&this._touchPan.isEnabled()}isActive(){return this._mousePan.isActive()||this._touchPan.isActive()}}class fs{constructor(t,e,i){this._pitchWithRotate=t.pitchWithRotate,this._mouseRotate=e,this._mousePitch=i;}enable(){this._mouseRotate.enable(),this._pitchWithRotate&&this._mousePitch.enable();}disable(){this._mouseRotate.disable(),this._mousePitch.disable();}isEnabled(){return this._mouseRotate.isEnabled()&&(!this._pitchWithRotate||this._mousePitch.isEnabled())}isActive(){return this._mouseRotate.isActive()||this._mousePitch.isActive()}}class gs{constructor(t,e,i,a){this._el=t,this._touchZoom=e,this._touchRotate=i,this._tapDragZoom=a,this._rotationDisabled=!1,this._enabled=!0;}enable(t){this._touchZoom.enable(t),this._rotationDisabled||this._touchRotate.enable(t),this._tapDragZoom.enable(),this._el.classList.add("maplibregl-touch-zoom-rotate");}disable(){this._touchZoom.disable(),this._touchRotate.disable(),this._tapDragZoom.disable(),this._el.classList.remove("maplibregl-touch-zoom-rotate");}isEnabled(){return this._touchZoom.isEnabled()&&(this._rotationDisabled||this._touchRotate.isEnabled())&&this._tapDragZoom.isEnabled()}isActive(){return this._touchZoom.isActive()||this._touchRotate.isActive()||this._tapDragZoom.isActive()}disableRotation(){this._rotationDisabled=!0,this._touchRotate.disable();}enableRotation(){this._rotationDisabled=!1,this._touchZoom.isEnabled()&&this._touchRotate.enable();}}class vs{constructor(t,e){this._bypassKey=-1!==navigator.userAgent.indexOf("Mac")?"metaKey":"ctrlKey",this._map=t,this._options=e,this._enabled=!1;}isActive(){return !1}reset(){}_setupUI(){if(this._container)return;const t=this._map.getCanvasContainer();t.classList.add("maplibregl-cooperative-gestures"),this._container=r.create("div","maplibregl-cooperative-gesture-screen",t);let e=this._map._getUIString("CooperativeGesturesHandler.WindowsHelpText");"metaKey"===this._bypassKey&&(e=this._map._getUIString("CooperativeGesturesHandler.MacHelpText"));const i=this._map._getUIString("CooperativeGesturesHandler.MobileHelpText"),a=document.createElement("div");a.className="maplibregl-desktop-message",a.textContent=e,this._container.appendChild(a);const s=document.createElement("div");s.className="maplibregl-mobile-message",s.textContent=i,this._container.appendChild(s),this._container.setAttribute("aria-hidden","true");}_destroyUI(){this._container&&(r.remove(this._container),this._map.getCanvasContainer().classList.remove("maplibregl-cooperative-gestures")),delete this._container;}enable(){this._setupUI(),this._enabled=!0;}disable(){this._enabled=!1,this._destroyUI();}isEnabled(){return this._enabled}isBypassed(t){return t[this._bypassKey]}notifyGestureBlocked(t,i){this._enabled&&(this._map.fire(new e.k("cooperativegestureprevented",{gestureType:t,originalEvent:i})),this._container.classList.add("maplibregl-show"),setTimeout((()=>{this._container.classList.remove("maplibregl-show");}),100));}}const xs=t=>t.zoom||t.drag||t.pitch||t.rotate;class ys extends e.k{}function bs(t){return t.panDelta&&t.panDelta.mag()||t.zoomDelta||t.bearingDelta||t.pitchDelta}class ws{constructor(t,e){this.handleWindowEvent=t=>{this.handleEvent(t,`${t.type}Window`);},this.handleEvent=(t,e)=>{if("blur"===t.type)return void this.stop(!0);this._updatingCamera=!0;const i="renderFrame"===t.type?void 0:t,a={needsRenderFrame:!1},s={},o={},n=t.touches,l=n?this._getMapTouches(n):void 0,h=l?r.touchPos(this._map.getCanvas(),l):r.mousePos(this._map.getCanvas(),t);for(const{handlerName:r,handler:n,allowed:c}of this._handlers){if(!n.isEnabled())continue;let u;this._blockedByActive(o,c,r)?n.reset():n[e||t.type]&&(u=n[e||t.type](t,h,l),this.mergeHandlerResult(a,s,u,r,i),u&&u.needsRenderFrame&&this._triggerRenderFrame()),(u||n.isActive())&&(o[r]=n);}const c={};for(const t in this._previousActiveHandlers)o[t]||(c[t]=i);this._previousActiveHandlers=o,(Object.keys(c).length||bs(a))&&(this._changes.push([a,s,c]),this._triggerRenderFrame()),(Object.keys(o).length||bs(a))&&this._map._stop(!0),this._updatingCamera=!1;const{cameraAnimation:u}=a;u&&(this._inertia.clear(),this._fireEvents({},{},!0),this._changes=[],u(this._map));},this._map=t,this._el=this._map.getCanvasContainer(),this._handlers=[],this._handlersById={},this._changes=[],this._inertia=new Ma(t),this._bearingSnap=e.bearingSnap,this._previousActiveHandlers={},this._eventsInProgress={},this._addDefaultHandlers(e);const i=this._el;this._listeners=[[i,"touchstart",{passive:!0}],[i,"touchmove",{passive:!1}],[i,"touchend",void 0],[i,"touchcancel",void 0],[i,"mousedown",void 0],[i,"mousemove",void 0],[i,"mouseup",void 0],[document,"mousemove",{capture:!0}],[document,"mouseup",void 0],[i,"mouseover",void 0],[i,"mouseout",void 0],[i,"dblclick",void 0],[i,"click",void 0],[i,"keydown",{capture:!1}],[i,"keyup",void 0],[i,"wheel",{passive:!1}],[i,"contextmenu",void 0],[window,"blur",void 0]];for(const[t,e,i]of this._listeners)r.addEventListener(t,e,t===document?this.handleWindowEvent:this.handleEvent,i);}destroy(){for(const[t,e,i]of this._listeners)r.removeEventListener(t,e,t===document?this.handleWindowEvent:this.handleEvent,i);}_addDefaultHandlers(t){const e=this._map,i=e.getCanvasContainer();this._add("mapEvent",new Ba(e,t));const a=e.boxZoom=new Ua(e,t);this._add("boxZoom",a),t.interactive&&t.boxZoom&&a.enable();const s=e.cooperativeGestures=new vs(e,t.cooperativeGestures);this._add("cooperativeGestures",s),t.cooperativeGestures&&s.enable();const o=new Va(e),n=new _s(e);e.doubleClickZoom=new ds(n,o),this._add("tapZoom",o),this._add("clickZoom",n),t.interactive&&t.doubleClickZoom&&e.doubleClickZoom.enable();const l=new ps;this._add("tapDragZoom",l);const h=e.touchPitch=new rs(e);this._add("touchPitch",h),t.interactive&&t.touchPitch&&e.touchPitch.enable(t.touchPitch);const c=Ka(t),u=Ja(t);e.dragRotate=new fs(t,c,u),this._add("mouseRotate",c,["mousePitch"]),this._add("mousePitch",u,["mouseRotate"]),t.interactive&&t.dragRotate&&e.dragRotate.enable();const d=(({enable:t,clickTolerance:e})=>{const i=new Wa({checkCorrectEvent:t=>0===r.mouseButton(t)&&!t.ctrlKey});return new Ga({clickTolerance:e,move:(t,e)=>({around:e,panDelta:e.sub(t)}),activateOnStart:!0,moveStateManager:i,enable:t,assignEvents:Xa})})(t),_=new Ya(t,e);e.dragPan=new ms(i,d,_),this._add("mousePan",d),this._add("touchPan",_,["touchZoom","touchRotate"]),t.interactive&&t.dragPan&&e.dragPan.enable(t.dragPan);const p=new ss,m=new is;e.touchZoomRotate=new gs(i,m,p,l),this._add("touchRotate",p,["touchPan","touchZoom"]),this._add("touchZoom",m,["touchPan","touchRotate"]),t.interactive&&t.touchZoomRotate&&e.touchZoomRotate.enable(t.touchZoomRotate);const f=e.scrollZoom=new us(e,(()=>this._triggerRenderFrame()));this._add("scrollZoom",f,["mousePan"]),t.interactive&&t.scrollZoom&&e.scrollZoom.enable(t.scrollZoom);const g=e.keyboard=new ls(e);this._add("keyboard",g),t.interactive&&t.keyboard&&e.keyboard.enable(),this._add("blockableMapEvent",new Oa(e));}_add(t,e,i){this._handlers.push({handlerName:t,handler:e,allowed:i}),this._handlersById[t]=e;}stop(t){if(!this._updatingCamera){for(const{handler:t}of this._handlers)t.reset();this._inertia.clear(),this._fireEvents({},{},t),this._changes=[];}}isActive(){for(const{handler:t}of this._handlers)if(t.isActive())return !0;return !1}isZooming(){return !!this._eventsInProgress.zoom||this._map.scrollZoom.isZooming()}isRotating(){return !!this._eventsInProgress.rotate}isMoving(){return Boolean(xs(this._eventsInProgress))||this.isZooming()}_blockedByActive(t,e,i){for(const a in t)if(a!==i&&(!e||e.indexOf(a)<0))return !0;return !1}_getMapTouches(t){const e=[];for(const i of t)this._el.contains(i.target)&&e.push(i);return e}mergeHandlerResult(t,i,a,s,o){if(!a)return;e.e(t,a);const r={handlerName:s,originalEvent:a.originalEvent||o};void 0!==a.zoomDelta&&(i.zoom=r),void 0!==a.panDelta&&(i.drag=r),void 0!==a.pitchDelta&&(i.pitch=r),void 0!==a.bearingDelta&&(i.rotate=r);}_applyChanges(){const t={},i={},a={};for(const[s,o,r]of this._changes)s.panDelta&&(t.panDelta=(t.panDelta||new e.P(0,0))._add(s.panDelta)),s.zoomDelta&&(t.zoomDelta=(t.zoomDelta||0)+s.zoomDelta),s.bearingDelta&&(t.bearingDelta=(t.bearingDelta||0)+s.bearingDelta),s.pitchDelta&&(t.pitchDelta=(t.pitchDelta||0)+s.pitchDelta),void 0!==s.around&&(t.around=s.around),void 0!==s.pinchAround&&(t.pinchAround=s.pinchAround),s.noInertia&&(t.noInertia=s.noInertia),e.e(i,o),e.e(a,r);this._updateMapTransform(t,i,a),this._changes=[];}_updateMapTransform(t,e,i){const a=this._map,s=a._getTransformForUpdate(),o=a.terrain;if(!(bs(t)||o&&this._terrainMovement))return this._fireEvents(e,i,!0);let{panDelta:r,zoomDelta:n,bearingDelta:l,pitchDelta:h,around:c,pinchAround:u}=t;void 0!==u&&(c=u),a._stop(!0),c=c||a.transform.centerPoint;const d=s.pointLocation(r?c.sub(r):c);l&&(s.bearing+=l),h&&(s.pitch+=h),n&&(s.zoom+=n),o?this._terrainMovement||!e.drag&&!e.zoom?e.drag&&this._terrainMovement?s.center=s.pointLocation(s.centerPoint.sub(r)):s.setLocationAtPoint(d,c):(this._terrainMovement=!0,this._map._elevationFreeze=!0,s.setLocationAtPoint(d,c)):s.setLocationAtPoint(d,c),a._applyUpdatedTransform(s),this._map._update(),t.noInertia||this._inertia.record(t),this._fireEvents(e,i,!0);}_fireEvents(t,i,a){const s=xs(this._eventsInProgress),r=xs(t),n={};for(const e in t){const{originalEvent:i}=t[e];this._eventsInProgress[e]||(n[`${e}start`]=i),this._eventsInProgress[e]=t[e];}!s&&r&&this._fireEvent("movestart",r.originalEvent);for(const t in n)this._fireEvent(t,n[t]);r&&this._fireEvent("move",r.originalEvent);for(const e in t){const{originalEvent:i}=t[e];this._fireEvent(e,i);}const l={};let h;for(const t in this._eventsInProgress){const{handlerName:e,originalEvent:a}=this._eventsInProgress[t];this._handlersById[e].isActive()||(delete this._eventsInProgress[t],h=i[e]||a,l[`${t}end`]=h);}for(const t in l)this._fireEvent(t,l[t]);const c=xs(this._eventsInProgress),u=(s||r)&&!c;if(u&&this._terrainMovement){this._map._elevationFreeze=!1,this._terrainMovement=!1;const t=this._map._getTransformForUpdate();t.recalculateZoom(this._map.terrain),this._map._applyUpdatedTransform(t);}if(a&&u){this._updatingCamera=!0;const t=this._inertia._onMoveEnd(this._map.dragPan._inertiaOptions),i=t=>0!==t&&-this._bearingSnap<t&&t<this._bearingSnap;!t||!t.essential&&o.prefersReducedMotion?(this._map.fire(new e.k("moveend",{originalEvent:h})),i(this._map.getBearing())&&this._map.resetNorth()):(i(t.bearing||this._map.getBearing())&&(t.bearing=0),t.freezeElevation=!0,this._map.easeTo(t,{originalEvent:h})),this._updatingCamera=!1;}}_fireEvent(t,i){this._map.fire(new e.k(t,i?{originalEvent:i}:{}));}_requestFrame(){return this._map.triggerRepaint(),this._map._renderTaskQueue.add((t=>{delete this._frameId,this.handleEvent(new ys("renderFrame",{timeStamp:t})),this._applyChanges();}))}_triggerRenderFrame(){void 0===this._frameId&&(this._frameId=this._requestFrame());}}class Ts extends e.E{constructor(t,e){super(),this._renderFrameCallback=()=>{const t=Math.min((o.now()-this._easeStart)/this._easeOptions.duration,1);this._onEaseFrame(this._easeOptions.easing(t)),t<1&&this._easeFrameId?this._easeFrameId=this._requestRenderFrame(this._renderFrameCallback):this.stop();},this._moving=!1,this._zooming=!1,this.transform=t,this._bearingSnap=e.bearingSnap,this.on("moveend",(()=>{delete this._requestedCameraState;}));}getCenter(){return new e.N(this.transform.center.lng,this.transform.center.lat)}setCenter(t,e){return this.jumpTo({center:t},e)}panBy(t,i,a){return t=e.P.convert(t).mult(-1),this.panTo(this.transform.center,e.e({offset:t},i),a)}panTo(t,i,a){return this.easeTo(e.e({center:t},i),a)}getZoom(){return this.transform.zoom}setZoom(t,e){return this.jumpTo({zoom:t},e),this}zoomTo(t,i,a){return this.easeTo(e.e({zoom:t},i),a)}zoomIn(t,e){return this.zoomTo(this.getZoom()+1,t,e),this}zoomOut(t,e){return this.zoomTo(this.getZoom()-1,t,e),this}getBearing(){return this.transform.bearing}setBearing(t,e){return this.jumpTo({bearing:t},e),this}getPadding(){return this.transform.padding}setPadding(t,e){return this.jumpTo({padding:t},e),this}rotateTo(t,i,a){return this.easeTo(e.e({bearing:t},i),a)}resetNorth(t,i){return this.rotateTo(0,e.e({duration:1e3},t),i),this}resetNorthPitch(t,i){return this.easeTo(e.e({bearing:0,pitch:0,duration:1e3},t),i),this}snapToNorth(t,e){return Math.abs(this.getBearing())<this._bearingSnap?this.resetNorth(t,e):this}getPitch(){return this.transform.pitch}setPitch(t,e){return this.jumpTo({pitch:t},e),this}cameraForBounds(t,e){t=H.convert(t).adjustAntiMeridian();const i=e&&e.bearing||0;return this._cameraForBoxAndBearing(t.getNorthWest(),t.getSouthEast(),i,e)}_cameraForBoxAndBearing(t,i,a,s){const o={top:0,bottom:0,right:0,left:0};if("number"==typeof(s=e.e({padding:o,offset:[0,0],maxZoom:this.transform.maxZoom},s)).padding){const t=s.padding;s.padding={top:t,bottom:t,right:t,left:t};}s.padding=e.e(o,s.padding);const r=this.transform,n=r.padding,l=new H(t,i),h=r.project(l.getNorthWest()),c=r.project(l.getNorthEast()),u=r.project(l.getSouthEast()),d=r.project(l.getSouthWest()),_=e.ba(-a),p=h.rotate(_),m=c.rotate(_),f=u.rotate(_),g=d.rotate(_),v=new e.P(Math.max(p.x,m.x,g.x,f.x),Math.max(p.y,m.y,g.y,f.y)),x=new e.P(Math.min(p.x,m.x,g.x,f.x),Math.min(p.y,m.y,g.y,f.y)),y=v.sub(x),b=(r.width-(n.left+n.right+s.padding.left+s.padding.right))/y.x,w=(r.height-(n.top+n.bottom+s.padding.top+s.padding.bottom))/y.y;if(w<0||b<0)return void e.w("Map cannot fit within canvas with the given bounds, padding, and/or offset.");const T=Math.min(r.scaleZoom(r.scale*Math.min(b,w)),s.maxZoom),I=e.P.convert(s.offset),E=new e.P((s.padding.left-s.padding.right)/2,(s.padding.top-s.padding.bottom)/2).rotate(e.ba(a)),P=I.add(E).mult(r.scale/r.zoomScale(T));return {center:r.unproject(h.add(u).div(2).sub(P)),zoom:T,bearing:a}}fitBounds(t,e,i){return this._fitInternal(this.cameraForBounds(t,e),e,i)}fitScreenCoordinates(t,i,a,s,o){return this._fitInternal(this._cameraForBoxAndBearing(this.transform.pointLocation(e.P.convert(t)),this.transform.pointLocation(e.P.convert(i)),a,s),s,o)}_fitInternal(t,i,a){return t?(delete(i=e.e(t,i)).padding,i.linear?this.easeTo(i,a):this.flyTo(i,a)):this}jumpTo(t,i){this.stop();const a=this._getTransformForUpdate();let s=!1,o=!1,r=!1;return "zoom"in t&&a.zoom!==+t.zoom&&(s=!0,a.zoom=+t.zoom),void 0!==t.center&&(a.center=e.N.convert(t.center)),"bearing"in t&&a.bearing!==+t.bearing&&(o=!0,a.bearing=+t.bearing),"pitch"in t&&a.pitch!==+t.pitch&&(r=!0,a.pitch=+t.pitch),null==t.padding||a.isPaddingEqual(t.padding)||(a.padding=t.padding),this._applyUpdatedTransform(a),this.fire(new e.k("movestart",i)).fire(new e.k("move",i)),s&&this.fire(new e.k("zoomstart",i)).fire(new e.k("zoom",i)).fire(new e.k("zoomend",i)),o&&this.fire(new e.k("rotatestart",i)).fire(new e.k("rotate",i)).fire(new e.k("rotateend",i)),r&&this.fire(new e.k("pitchstart",i)).fire(new e.k("pitch",i)).fire(new e.k("pitchend",i)),this.fire(new e.k("moveend",i))}calculateCameraOptionsFromTo(t,i,a,s=0){const o=e.Z.fromLngLat(t,i),r=e.Z.fromLngLat(a,s),n=r.x-o.x,l=r.y-o.y,h=r.z-o.z,c=Math.hypot(n,l,h);if(0===c)throw new Error("Can't calculate camera options with same From and To");const u=Math.hypot(n,l),d=this.transform.scaleZoom(this.transform.cameraToCenterDistance/c/this.transform.tileSize),_=180*Math.atan2(n,-l)/Math.PI;let p=180*Math.acos(u/c)/Math.PI;return p=h<0?90-p:90+p,{center:r.toLngLat(),zoom:d,pitch:p,bearing:_}}easeTo(t,i){var a;this._stop(!1,t.easeId),(!1===(t=e.e({offset:[0,0],duration:500,easing:e.b9},t)).animate||!t.essential&&o.prefersReducedMotion)&&(t.duration=0);const s=this._getTransformForUpdate(),r=s.zoom,n=s.bearing,l=s.pitch,h=s.padding,c="bearing"in t?this._normalizeBearing(t.bearing,n):n,u="pitch"in t?+t.pitch:l,d="padding"in t?t.padding:s.padding,_=e.P.convert(t.offset);let p=s.centerPoint.add(_);const m=s.pointLocation(p),{center:f,zoom:g}=s.getConstrained(e.N.convert(t.center||m),null!==(a=t.zoom)&&void 0!==a?a:r);this._normalizeCenter(f,s);const v=s.project(m),x=s.project(f).sub(v),y=s.zoomScale(g-r);let b,w;t.around&&(b=e.N.convert(t.around),w=s.locationPoint(b));const T={moving:this._moving,zooming:this._zooming,rotating:this._rotating,pitching:this._pitching};return this._zooming=this._zooming||g!==r,this._rotating=this._rotating||n!==c,this._pitching=this._pitching||u!==l,this._padding=!s.isPaddingEqual(d),this._easeId=t.easeId,this._prepareEase(i,t.noMoveStart,T),this.terrain&&this._prepareElevation(f),this._ease((a=>{if(this._zooming&&(s.zoom=e.y.number(r,g,a)),this._rotating&&(s.bearing=e.y.number(n,c,a)),this._pitching&&(s.pitch=e.y.number(l,u,a)),this._padding&&(s.interpolatePadding(h,d,a),p=s.centerPoint.add(_)),this.terrain&&!t.freezeElevation&&this._updateElevation(a),b)s.setLocationAtPoint(b,w);else {const t=s.zoomScale(s.zoom-r),e=g>r?Math.min(2,y):Math.max(.5,y),i=Math.pow(e,1-a),o=s.unproject(v.add(x.mult(a*i)).mult(t));s.setLocationAtPoint(s.renderWorldCopies?o.wrap():o,p);}this._applyUpdatedTransform(s),this._fireMoveEvents(i);}),(e=>{this.terrain&&t.freezeElevation&&this._finalizeElevation(),this._afterEase(i,e);}),t),this}_prepareEase(t,i,a={}){this._moving=!0,i||a.moving||this.fire(new e.k("movestart",t)),this._zooming&&!a.zooming&&this.fire(new e.k("zoomstart",t)),this._rotating&&!a.rotating&&this.fire(new e.k("rotatestart",t)),this._pitching&&!a.pitching&&this.fire(new e.k("pitchstart",t));}_prepareElevation(t){this._elevationCenter=t,this._elevationStart=this.transform.elevation,this._elevationTarget=this.terrain.getElevationForLngLatZoom(t,this.transform.tileZoom),this._elevationFreeze=!0;}_updateElevation(t){this.transform.minElevationForCurrentTile=this.terrain.getMinTileElevationForLngLatZoom(this._elevationCenter,this.transform.tileZoom);const i=this.terrain.getElevationForLngLatZoom(this._elevationCenter,this.transform.tileZoom);if(t<1&&i!==this._elevationTarget){const e=this._elevationTarget-this._elevationStart;this._elevationStart+=t*(e-(i-(e*t+this._elevationStart))/(1-t)),this._elevationTarget=i;}this.transform.elevation=e.y.number(this._elevationStart,this._elevationTarget,t);}_finalizeElevation(){this._elevationFreeze=!1,this.transform.recalculateZoom(this.terrain);}_getTransformForUpdate(){return this.transformCameraUpdate||this.terrain?(this._requestedCameraState||(this._requestedCameraState=this.transform.clone()),this._requestedCameraState):this.transform}_elevateCameraIfInsideTerrain(t){const e=t.getCameraPosition(),i=this.terrain.getElevationForLngLatZoom(e.lngLat,t.zoom);if(e.altitude<i){const a=this.calculateCameraOptionsFromTo(e.lngLat,i,t.center,t.elevation);return {pitch:a.pitch,zoom:a.zoom}}return {}}_applyUpdatedTransform(t){const e=[];if(this.terrain&&e.push((t=>this._elevateCameraIfInsideTerrain(t))),this.transformCameraUpdate&&e.push((t=>this.transformCameraUpdate(t))),!e.length)return;const i=t.clone();for(const t of e){const e=i.clone(),{center:a,zoom:s,pitch:o,bearing:r,elevation:n}=t(e);a&&(e.center=a),void 0!==s&&(e.zoom=s),void 0!==o&&(e.pitch=o),void 0!==r&&(e.bearing=r),void 0!==n&&(e.elevation=n),i.apply(e);}this.transform.apply(i);}_fireMoveEvents(t){this.fire(new e.k("move",t)),this._zooming&&this.fire(new e.k("zoom",t)),this._rotating&&this.fire(new e.k("rotate",t)),this._pitching&&this.fire(new e.k("pitch",t));}_afterEase(t,i){if(this._easeId&&i&&this._easeId===i)return;delete this._easeId;const a=this._zooming,s=this._rotating,o=this._pitching;this._moving=!1,this._zooming=!1,this._rotating=!1,this._pitching=!1,this._padding=!1,a&&this.fire(new e.k("zoomend",t)),s&&this.fire(new e.k("rotateend",t)),o&&this.fire(new e.k("pitchend",t)),this.fire(new e.k("moveend",t));}flyTo(t,i){var a;if(!t.essential&&o.prefersReducedMotion){const a=e.M(t,["center","zoom","bearing","pitch","around"]);return this.jumpTo(a,i)}this.stop(),t=e.e({offset:[0,0],speed:1.2,curve:1.42,easing:e.b9},t);const s=this._getTransformForUpdate(),r=s.zoom,n=s.bearing,l=s.pitch,h=s.padding,c="bearing"in t?this._normalizeBearing(t.bearing,n):n,u="pitch"in t?+t.pitch:l,d="padding"in t?t.padding:s.padding,_=e.P.convert(t.offset);let p=s.centerPoint.add(_);const m=s.pointLocation(p),{center:f,zoom:g}=s.getConstrained(e.N.convert(t.center||m),null!==(a=t.zoom)&&void 0!==a?a:r);this._normalizeCenter(f,s);const v=s.zoomScale(g-r),x=s.project(m),y=s.project(f).sub(x);let b=t.curve;const w=Math.max(s.width,s.height),T=w/v,I=y.mag();if("minZoom"in t){const i=e.ac(Math.min(t.minZoom,r,g),s.minZoom,s.maxZoom),a=w/s.zoomScale(i-r);b=Math.sqrt(a/I*2);}const E=b*b;function P(t){const e=(T*T-w*w+(t?-1:1)*E*E*I*I)/(2*(t?T:w)*E*I);return Math.log(Math.sqrt(e*e+1)-e)}function C(t){return (Math.exp(t)-Math.exp(-t))/2}function S(t){return (Math.exp(t)+Math.exp(-t))/2}const z=P(!1);let D=function(t){return S(z)/S(z+b*t)},M=function(t){return w*((S(z)*(C(e=z+b*t)/S(e))-C(z))/E)/I;var e;},A=(P(!0)-z)/b;if(Math.abs(I)<1e-6||!isFinite(A)){if(Math.abs(w-T)<1e-6)return this.easeTo(t,i);const e=T<w?-1:1;A=Math.abs(Math.log(T/w))/b,M=()=>0,D=t=>Math.exp(e*b*t);}return t.duration="duration"in t?+t.duration:1e3*A/("screenSpeed"in t?+t.screenSpeed/b:+t.speed),t.maxDuration&&t.duration>t.maxDuration&&(t.duration=0),this._zooming=!0,this._rotating=n!==c,this._pitching=u!==l,this._padding=!s.isPaddingEqual(d),this._prepareEase(i,!1),this.terrain&&this._prepareElevation(f),this._ease((a=>{const o=a*A,m=1/D(o);s.zoom=1===a?g:r+s.scaleZoom(m),this._rotating&&(s.bearing=e.y.number(n,c,a)),this._pitching&&(s.pitch=e.y.number(l,u,a)),this._padding&&(s.interpolatePadding(h,d,a),p=s.centerPoint.add(_)),this.terrain&&!t.freezeElevation&&this._updateElevation(a);const v=1===a?f:s.unproject(x.add(y.mult(M(o))).mult(m));s.setLocationAtPoint(s.renderWorldCopies?v.wrap():v,p),this._applyUpdatedTransform(s),this._fireMoveEvents(i);}),(()=>{this.terrain&&t.freezeElevation&&this._finalizeElevation(),this._afterEase(i);}),t),this}isEasing(){return !!this._easeFrameId}stop(){return this._stop()}_stop(t,e){var i;if(this._easeFrameId&&(this._cancelRenderFrame(this._easeFrameId),delete this._easeFrameId,delete this._onEaseFrame),this._onEaseEnd){const t=this._onEaseEnd;delete this._onEaseEnd,t.call(this,e);}return t||null===(i=this.handlers)||void 0===i||i.stop(!1),this}_ease(t,e,i){!1===i.animate||0===i.duration?(t(1),e()):(this._easeStart=o.now(),this._easeOptions=i,this._onEaseFrame=t,this._onEaseEnd=e,this._easeFrameId=this._requestRenderFrame(this._renderFrameCallback));}_normalizeBearing(t,i){t=e.b3(t,-180,180);const a=Math.abs(t-i);return Math.abs(t-360-i)<a&&(t-=360),Math.abs(t+360-i)<a&&(t+=360),t}_normalizeCenter(t,e){if(!e.renderWorldCopies||e.lngRange)return;const i=t.lng-e.center.lng;t.lng+=i>180?-360:i<-180?360:0;}queryTerrainElevation(t){return this.terrain?this.terrain.getElevationForLngLatZoom(e.N.convert(t),this.transform.tileZoom)-this.transform.elevation:null}}const Is={compact:!0,customAttribution:'<a href="https://maplibre.org/" target="_blank">MapLibre</a>'};class Es{constructor(t=Is){this._toggleAttribution=()=>{this._container.classList.contains("maplibregl-compact")&&(this._container.classList.contains("maplibregl-compact-show")?(this._container.setAttribute("open",""),this._container.classList.remove("maplibregl-compact-show")):(this._container.classList.add("maplibregl-compact-show"),this._container.removeAttribute("open")));},this._updateData=t=>{!t||"metadata"!==t.sourceDataType&&"visibility"!==t.sourceDataType&&"style"!==t.dataType&&"terrain"!==t.type||this._updateAttributions();},this._updateCompact=()=>{this._map.getCanvasContainer().offsetWidth<=640||this._compact?!1===this._compact?this._container.setAttribute("open",""):this._container.classList.contains("maplibregl-compact")||this._container.classList.contains("maplibregl-attrib-empty")||(this._container.setAttribute("open",""),this._container.classList.add("maplibregl-compact","maplibregl-compact-show")):(this._container.setAttribute("open",""),this._container.classList.contains("maplibregl-compact")&&this._container.classList.remove("maplibregl-compact","maplibregl-compact-show"));},this._updateCompactMinimize=()=>{this._container.classList.contains("maplibregl-compact")&&this._container.classList.contains("maplibregl-compact-show")&&this._container.classList.remove("maplibregl-compact-show");},this.options=t;}getDefaultPosition(){return "bottom-right"}onAdd(t){return this._map=t,this._compact=this.options.compact,this._container=r.create("details","maplibregl-ctrl maplibregl-ctrl-attrib"),this._compactButton=r.create("summary","maplibregl-ctrl-attrib-button",this._container),this._compactButton.addEventListener("click",this._toggleAttribution),this._setElementTitle(this._compactButton,"ToggleAttribution"),this._innerContainer=r.create("div","maplibregl-ctrl-attrib-inner",this._container),this._updateAttributions(),this._updateCompact(),this._map.on("styledata",this._updateData),this._map.on("sourcedata",this._updateData),this._map.on("terrain",this._updateData),this._map.on("resize",this._updateCompact),this._map.on("drag",this._updateCompactMinimize),this._container}onRemove(){r.remove(this._container),this._map.off("styledata",this._updateData),this._map.off("sourcedata",this._updateData),this._map.off("terrain",this._updateData),this._map.off("resize",this._updateCompact),this._map.off("drag",this._updateCompactMinimize),this._map=void 0,this._compact=void 0,this._attribHTML=void 0;}_setElementTitle(t,e){const i=this._map._getUIString(`AttributionControl.${e}`);t.title=i,t.setAttribute("aria-label",i);}_updateAttributions(){if(!this._map.style)return;let t=[];if(this.options.customAttribution&&(Array.isArray(this.options.customAttribution)?t=t.concat(this.options.customAttribution.map((t=>"string"!=typeof t?"":t))):"string"==typeof this.options.customAttribution&&t.push(this.options.customAttribution)),this._map.style.stylesheet){const t=this._map.style.stylesheet;this.styleOwner=t.owner,this.styleId=t.id;}const e=this._map.style.sourceCaches;for(const i in e){const a=e[i];if(a.used||a.usedForTerrain){const e=a.getSource();e.attribution&&t.indexOf(e.attribution)<0&&t.push(e.attribution);}}t=t.filter((t=>String(t).trim())),t.sort(((t,e)=>t.length-e.length)),t=t.filter(((e,i)=>{for(let a=i+1;a<t.length;a++)if(t[a].indexOf(e)>=0)return !1;return !0}));const i=t.join(" | ");i!==this._attribHTML&&(this._attribHTML=i,t.length?(this._innerContainer.innerHTML=i,this._container.classList.remove("maplibregl-attrib-empty")):this._container.classList.add("maplibregl-attrib-empty"),this._updateCompact(),this._editLink=null);}}class Ps{constructor(t={}){this._updateCompact=()=>{const t=this._container.children;if(t.length){const e=t[0];this._map.getCanvasContainer().offsetWidth<=640||this._compact?!1!==this._compact&&e.classList.add("maplibregl-compact"):e.classList.remove("maplibregl-compact");}},this.options=t;}getDefaultPosition(){return "bottom-left"}onAdd(t){this._map=t,this._compact=this.options&&this.options.compact,this._container=r.create("div","maplibregl-ctrl");const e=r.create("a","maplibregl-ctrl-logo");return e.target="_blank",e.rel="noopener nofollow",e.href="https://maplibre.org/",e.setAttribute("aria-label",this._map._getUIString("LogoControl.Title")),e.setAttribute("rel","noopener nofollow"),this._container.appendChild(e),this._container.style.display="block",this._map.on("resize",this._updateCompact),this._updateCompact(),this._container}onRemove(){r.remove(this._container),this._map.off("resize",this._updateCompact),this._map=void 0,this._compact=void 0;}}class Cs{constructor(){this._queue=[],this._id=0,this._cleared=!1,this._currentlyRunning=!1;}add(t){const e=++this._id;return this._queue.push({callback:t,id:e,cancelled:!1}),e}remove(t){const e=this._currentlyRunning,i=e?this._queue.concat(e):this._queue;for(const e of i)if(e.id===t)return void(e.cancelled=!0)}run(t=0){if(this._currentlyRunning)throw new Error("Attempting to run(), but is already running.");const e=this._currentlyRunning=this._queue;this._queue=[];for(const i of e)if(!i.cancelled&&(i.callback(t),this._cleared))break;this._cleared=!1,this._currentlyRunning=!1;}clear(){this._currentlyRunning&&(this._cleared=!0),this._queue=[];}}var Ss=e.Y([{name:"a_pos3d",type:"Int16",components:3}]);class zs extends e.E{constructor(t){super(),this.sourceCache=t,this._tiles={},this._renderableTilesKeys=[],this._sourceTileCache={},this.minzoom=0,this.maxzoom=22,this.tileSize=512,this.deltaZoom=1,t.usedForTerrain=!0,t.tileSize=this.tileSize*2**this.deltaZoom;}destruct(){this.sourceCache.usedForTerrain=!1,this.sourceCache.tileSize=null;}update(t,i){this.sourceCache.update(t,i),this._renderableTilesKeys=[];const a={};for(const s of t.coveringTiles({tileSize:this.tileSize,minzoom:this.minzoom,maxzoom:this.maxzoom,reparseOverscaled:!1,terrain:i}))a[s.key]=!0,this._renderableTilesKeys.push(s.key),this._tiles[s.key]||(s.posMatrix=new Float64Array(16),e.aP(s.posMatrix,0,e.X,0,e.X,0,1),this._tiles[s.key]=new lt(s,this.tileSize));for(const t in this._tiles)a[t]||delete this._tiles[t];}freeRtt(t){for(const e in this._tiles){const i=this._tiles[e];(!t||i.tileID.equals(t)||i.tileID.isChildOf(t)||t.isChildOf(i.tileID))&&(i.rtt=[]);}}getRenderableTiles(){return this._renderableTilesKeys.map((t=>this.getTileByID(t)))}getTileByID(t){return this._tiles[t]}getTerrainCoords(t){const i={};for(const a of this._renderableTilesKeys){const s=this._tiles[a].tileID;if(s.canonical.equals(t.canonical)){const s=t.clone();s.posMatrix=new Float64Array(16),e.aP(s.posMatrix,0,e.X,0,e.X,0,1),i[a]=s;}else if(s.canonical.isChildOf(t.canonical)){const o=t.clone();o.posMatrix=new Float64Array(16);const r=s.canonical.z-t.canonical.z,n=s.canonical.x-(s.canonical.x>>r<<r),l=s.canonical.y-(s.canonical.y>>r<<r),h=e.X>>r;e.aP(o.posMatrix,0,h,0,h,0,1),e.J(o.posMatrix,o.posMatrix,[-n*h,-l*h,0]),i[a]=o;}else if(t.canonical.isChildOf(s.canonical)){const o=t.clone();o.posMatrix=new Float64Array(16);const r=t.canonical.z-s.canonical.z,n=t.canonical.x-(t.canonical.x>>r<<r),l=t.canonical.y-(t.canonical.y>>r<<r),h=e.X>>r;e.aP(o.posMatrix,0,e.X,0,e.X,0,1),e.J(o.posMatrix,o.posMatrix,[n*h,l*h,0]),e.K(o.posMatrix,o.posMatrix,[1/2**r,1/2**r,0]),i[a]=o;}}return i}getSourceTile(t,e){const i=this.sourceCache._source;let a=t.overscaledZ-this.deltaZoom;if(a>i.maxzoom&&(a=i.maxzoom),a<i.minzoom)return null;this._sourceTileCache[t.key]||(this._sourceTileCache[t.key]=t.scaledTo(a).key);let s=this.sourceCache.getTileByID(this._sourceTileCache[t.key]);if((!s||!s.dem)&&e)for(;a>=i.minzoom&&(!s||!s.dem);)s=this.sourceCache.getTileByID(t.scaledTo(a--).key);return s}tilesAfterTime(t=Date.now()){return Object.values(this._tiles).filter((e=>e.timeAdded>=t))}}class Ds{constructor(t,e,i){this.painter=t,this.sourceCache=new zs(e),this.options=i,this.exaggeration="number"==typeof i.exaggeration?i.exaggeration:1,this.qualityFactor=2,this.meshSize=128,this._demMatrixCache={},this.coordsIndex=[],this._coordsTextureSize=1024;}getDEMElevation(t,i,a,s=e.X){var o;if(!(i>=0&&i<s&&a>=0&&a<s))return 0;const r=this.getTerrainData(t),n=null===(o=r.tile)||void 0===o?void 0:o.dem;if(!n)return 0;const l=function(t,e,i){var a=e[0],s=e[1];return t[0]=i[0]*a+i[4]*s+i[12],t[1]=i[1]*a+i[5]*s+i[13],t}([],[i/s*e.X,a/s*e.X],r.u_terrain_matrix),h=[l[0]*n.dim,l[1]*n.dim],c=Math.floor(h[0]),u=Math.floor(h[1]),d=h[0]-c,_=h[1]-u;return n.get(c,u)*(1-d)*(1-_)+n.get(c+1,u)*d*(1-_)+n.get(c,u+1)*(1-d)*_+n.get(c+1,u+1)*d*_}getElevationForLngLatZoom(t,i){if(!e.bb(i,t.wrap()))return 0;const{tileID:a,mercatorX:s,mercatorY:o}=this._getOverscaledTileIDFromLngLatZoom(t,i);return this.getElevation(a,s%e.X,o%e.X,e.X)}getElevation(t,i,a,s=e.X){return this.getDEMElevation(t,i,a,s)*this.exaggeration}getTerrainData(t){if(!this._emptyDemTexture){const t=this.painter.context,i=new e.R({width:1,height:1},new Uint8Array(4));this._emptyDepthTexture=new b(t,i,t.gl.RGBA,{premultiply:!1}),this._emptyDemUnpack=[0,0,0,0],this._emptyDemTexture=new b(t,new e.R({width:1,height:1}),t.gl.RGBA,{premultiply:!1}),this._emptyDemTexture.bind(t.gl.NEAREST,t.gl.CLAMP_TO_EDGE),this._emptyDemMatrix=e.an([]);}const i=this.sourceCache.getSourceTile(t,!0);if(i&&i.dem&&(!i.demTexture||i.needsTerrainPrepare)){const t=this.painter.context;i.demTexture=this.painter.getTileTexture(i.dem.stride),i.demTexture?i.demTexture.update(i.dem.getPixels(),{premultiply:!1}):i.demTexture=new b(t,i.dem.getPixels(),t.gl.RGBA,{premultiply:!1}),i.demTexture.bind(t.gl.NEAREST,t.gl.CLAMP_TO_EDGE),i.needsTerrainPrepare=!1;}const a=i&&i+i.tileID.key+t.key;if(a&&!this._demMatrixCache[a]){const a=this.sourceCache.sourceCache._source.maxzoom;let s=t.canonical.z-i.tileID.canonical.z;t.overscaledZ>t.canonical.z&&(t.canonical.z>=a?s=t.canonical.z-a:e.w("cannot calculate elevation if elevation maxzoom > source.maxzoom"));const o=t.canonical.x-(t.canonical.x>>s<<s),r=t.canonical.y-(t.canonical.y>>s<<s),n=e.bc(new Float64Array(16),[1/(e.X<<s),1/(e.X<<s),0]);e.J(n,n,[o*e.X,r*e.X,0]),this._demMatrixCache[t.key]={matrix:n,coord:t};}return {u_depth:2,u_terrain:3,u_terrain_dim:i&&i.dem&&i.dem.dim||1,u_terrain_matrix:a?this._demMatrixCache[t.key].matrix:this._emptyDemMatrix,u_terrain_unpack:i&&i.dem&&i.dem.getUnpackVector()||this._emptyDemUnpack,u_terrain_exaggeration:this.exaggeration,texture:(i&&i.demTexture||this._emptyDemTexture).texture,depthTexture:(this._fboDepthTexture||this._emptyDepthTexture).texture,tile:i}}getFramebuffer(t){const e=this.painter,i=e.width/devicePixelRatio,a=e.height/devicePixelRatio;return !this._fbo||this._fbo.width===i&&this._fbo.height===a||(this._fbo.destroy(),this._fboCoordsTexture.destroy(),this._fboDepthTexture.destroy(),delete this._fbo,delete this._fboDepthTexture,delete this._fboCoordsTexture),this._fboCoordsTexture||(this._fboCoordsTexture=new b(e.context,{width:i,height:a,data:null},e.context.gl.RGBA,{premultiply:!1}),this._fboCoordsTexture.bind(e.context.gl.NEAREST,e.context.gl.CLAMP_TO_EDGE)),this._fboDepthTexture||(this._fboDepthTexture=new b(e.context,{width:i,height:a,data:null},e.context.gl.RGBA,{premultiply:!1}),this._fboDepthTexture.bind(e.context.gl.NEAREST,e.context.gl.CLAMP_TO_EDGE)),this._fbo||(this._fbo=e.context.createFramebuffer(i,a,!0,!1),this._fbo.depthAttachment.set(e.context.createRenderbuffer(e.context.gl.DEPTH_COMPONENT16,i,a))),this._fbo.colorAttachment.set("coords"===t?this._fboCoordsTexture.texture:this._fboDepthTexture.texture),this._fbo}getCoordsTexture(){const t=this.painter.context;if(this._coordsTexture)return this._coordsTexture;const i=new Uint8Array(this._coordsTextureSize*this._coordsTextureSize*4);for(let t=0,e=0;t<this._coordsTextureSize;t++)for(let a=0;a<this._coordsTextureSize;a++,e+=4)i[e+0]=255&a,i[e+1]=255&t,i[e+2]=a>>8<<4|t>>8,i[e+3]=0;const a=new e.R({width:this._coordsTextureSize,height:this._coordsTextureSize},new Uint8Array(i.buffer)),s=new b(t,a,t.gl.RGBA,{premultiply:!1});return s.bind(t.gl.NEAREST,t.gl.CLAMP_TO_EDGE),this._coordsTexture=s,s}pointCoordinate(t){this.painter.maybeDrawDepthAndCoords(!0);const i=new Uint8Array(4),a=this.painter.context,s=a.gl,o=Math.round(t.x*this.painter.pixelRatio/devicePixelRatio),r=Math.round(t.y*this.painter.pixelRatio/devicePixelRatio),n=Math.round(this.painter.height/devicePixelRatio);a.bindFramebuffer.set(this.getFramebuffer("coords").framebuffer),s.readPixels(o,n-r-1,1,1,s.RGBA,s.UNSIGNED_BYTE,i),a.bindFramebuffer.set(null);const l=i[0]+(i[2]>>4<<8),h=i[1]+((15&i[2])<<8),c=this.coordsIndex[255-i[3]],u=c&&this.sourceCache.getTileByID(c);if(!u)return null;const d=this._coordsTextureSize,_=(1<<u.tileID.canonical.z)*d;return new e.Z((u.tileID.canonical.x*d+l)/_+u.tileID.wrap,(u.tileID.canonical.y*d+h)/_,this.getElevation(u.tileID,l,h,d))}depthAtPoint(t){const e=new Uint8Array(4),i=this.painter.context,a=i.gl;return i.bindFramebuffer.set(this.getFramebuffer("depth").framebuffer),a.readPixels(t.x,this.painter.height/devicePixelRatio-t.y-1,1,1,a.RGBA,a.UNSIGNED_BYTE,e),i.bindFramebuffer.set(null),(e[0]/16777216+e[1]/65536+e[2]/256+e[3])/256}getTerrainMesh(){if(this._mesh)return this._mesh;const t=this.painter.context,i=new e.bd,a=new e.aY,s=this.meshSize,o=e.X/s,r=s*s;for(let t=0;t<=s;t++)for(let e=0;e<=s;e++)i.emplaceBack(e*o,t*o,0);for(let t=0;t<r;t+=s+1)for(let e=0;e<s;e++)a.emplaceBack(e+t,s+e+t+1,s+e+t+2),a.emplaceBack(e+t,s+e+t+2,e+t+1);const n=i.length,l=n+2*(s+1);for(const t of [0,1])for(let a=0;a<=s;a++)for(const s of [0,1])i.emplaceBack(a*o,t*e.X,s);for(let t=0;t<2*s;t+=2)a.emplaceBack(l+t,l+t+1,l+t+3),a.emplaceBack(l+t,l+t+3,l+t+2),a.emplaceBack(n+t,n+t+3,n+t+1),a.emplaceBack(n+t,n+t+2,n+t+3);const h=i.length,c=h+2*(s+1);for(const t of [0,1])for(let a=0;a<=s;a++)for(const s of [0,1])i.emplaceBack(t*e.X,a*o,s);for(let t=0;t<2*s;t+=2)a.emplaceBack(h+t,h+t+1,h+t+3),a.emplaceBack(h+t,h+t+3,h+t+2),a.emplaceBack(c+t,c+t+3,c+t+1),a.emplaceBack(c+t,c+t+2,c+t+3);return this._mesh=new ga(t.createVertexBuffer(i,Ss.members),t.createIndexBuffer(a),e.a0.simpleSegment(0,0,i.length,a.length)),this._mesh}getMeshFrameDelta(t){return 2*Math.PI*e.be/Math.pow(2,t)/5}getMinTileElevationForLngLatZoom(t,e){var i;const{tileID:a}=this._getOverscaledTileIDFromLngLatZoom(t,e);return null!==(i=this.getMinMaxElevation(a).minElevation)&&void 0!==i?i:0}getMinMaxElevation(t){const e=this.getTerrainData(t).tile,i={minElevation:null,maxElevation:null};return e&&e.dem&&(i.minElevation=e.dem.min*this.exaggeration,i.maxElevation=e.dem.max*this.exaggeration),i}_getOverscaledTileIDFromLngLatZoom(t,i){const a=e.Z.fromLngLat(t.wrap()),s=(1<<i)*e.X,o=a.x*s,r=a.y*s,n=Math.floor(o/e.X),l=Math.floor(r/e.X);return {tileID:new e.S(i,0,i,n,l),mercatorX:o,mercatorY:r}}}class Ms{constructor(t,e,i){this._context=t,this._size=e,this._tileSize=i,this._objects=[],this._recentlyUsed=[],this._stamp=0;}destruct(){for(const t of this._objects)t.texture.destroy(),t.fbo.destroy();}_createObject(t){const e=this._context.createFramebuffer(this._tileSize,this._tileSize,!0,!0),i=new b(this._context,{width:this._tileSize,height:this._tileSize,data:null},this._context.gl.RGBA);return i.bind(this._context.gl.LINEAR,this._context.gl.CLAMP_TO_EDGE),e.depthAttachment.set(this._context.createRenderbuffer(this._context.gl.DEPTH_STENCIL,this._tileSize,this._tileSize)),e.colorAttachment.set(i.texture),{id:t,fbo:e,texture:i,stamp:-1,inUse:!1}}getObjectForId(t){return this._objects[t]}useObject(t){t.inUse=!0,this._recentlyUsed=this._recentlyUsed.filter((e=>t.id!==e)),this._recentlyUsed.push(t.id);}stampObject(t){t.stamp=++this._stamp;}getOrCreateFreeObject(){for(const t of this._recentlyUsed)if(!this._objects[t].inUse)return this._objects[t];if(this._objects.length>=this._size)throw new Error("No free RenderPool available, call freeAllObjects() required!");const t=this._createObject(this._objects.length);return this._objects.push(t),t}freeObject(t){t.inUse=!1;}freeAllObjects(){for(const t of this._objects)this.freeObject(t);}isFull(){return !(this._objects.length<this._size)&&!1===this._objects.some((t=>!t.inUse))}}const As={background:!0,fill:!0,line:!0,raster:!0,hillshade:!0};class Rs{constructor(t,e){this.painter=t,this.terrain=e,this.pool=new Ms(t.context,30,e.sourceCache.tileSize*e.qualityFactor);}destruct(){this.pool.destruct();}getTexture(t){return this.pool.getObjectForId(t.rtt[this._stacks.length-1].id).texture}prepareForRender(t,e){this._stacks=[],this._prevType=null,this._rttTiles=[],this._renderableTiles=this.terrain.sourceCache.getRenderableTiles(),this._renderableLayerIds=t._order.filter((i=>!t._layers[i].isHidden(e))),this._coordsDescendingInv={};for(const e in t.sourceCaches){this._coordsDescendingInv[e]={};const i=t.sourceCaches[e].getVisibleCoordinates();for(const t of i){const i=this.terrain.sourceCache.getTerrainCoords(t);for(const t in i)this._coordsDescendingInv[e][t]||(this._coordsDescendingInv[e][t]=[]),this._coordsDescendingInv[e][t].push(i[t]);}}this._coordsDescendingInvStr={};for(const e of t._order){const i=t._layers[e],a=i.source;if(As[i.type]&&!this._coordsDescendingInvStr[a]){this._coordsDescendingInvStr[a]={};for(const t in this._coordsDescendingInv[a])this._coordsDescendingInvStr[a][t]=this._coordsDescendingInv[a][t].map((t=>t.key)).sort().join();}}for(const t of this._renderableTiles)for(const e in this._coordsDescendingInvStr){const i=this._coordsDescendingInvStr[e][t.tileID.key];i&&i!==t.rttCoords[e]&&(t.rtt=[]);}}renderLayer(t){if(t.isHidden(this.painter.transform.zoom))return !1;const i=t.type,a=this.painter,s=this._renderableLayerIds[this._renderableLayerIds.length-1]===t.id;if(As[i]&&(this._prevType&&As[this._prevType]||this._stacks.push([]),this._prevType=i,this._stacks[this._stacks.length-1].push(t.id),!s))return !0;if(As[this._prevType]||As[i]&&s){this._prevType=i;const t=this._stacks.length-1,s=this._stacks[t]||[];for(const i of this._renderableTiles){if(this.pool.isFull()&&(fa(this.painter,this.terrain,this._rttTiles),this._rttTiles=[],this.pool.freeAllObjects()),this._rttTiles.push(i),i.rtt[t]){const e=this.pool.getObjectForId(i.rtt[t].id);if(e.stamp===i.rtt[t].stamp){this.pool.useObject(e);continue}}const o=this.pool.getOrCreateFreeObject();this.pool.useObject(o),this.pool.stampObject(o),i.rtt[t]={id:o.id,stamp:o.stamp},a.context.bindFramebuffer.set(o.fbo.framebuffer),a.context.clear({color:e.aM.transparent,stencil:0}),a.currentStencilSource=void 0;for(let t=0;t<s.length;t++){const e=a.style._layers[s[t]],r=e.source?this._coordsDescendingInv[e.source][i.tileID.key]:[i.tileID];a.context.viewport.set([0,0,o.fbo.width,o.fbo.height]),a._renderTileClippingMasks(e,r),a.renderLayer(a,a.style.sourceCaches[e.source],e,r),e.source&&(i.rttCoords[e.source]=this._coordsDescendingInvStr[e.source][i.tileID.key]);}}return fa(this.painter,this.terrain,this._rttTiles),this._rttTiles=[],this.pool.freeAllObjects(),As[i]}return !1}}const ks={"AttributionControl.ToggleAttribution":"Toggle attribution","AttributionControl.MapFeedback":"Map feedback","FullscreenControl.Enter":"Enter fullscreen","FullscreenControl.Exit":"Exit fullscreen","GeolocateControl.FindMyLocation":"Find my location","GeolocateControl.LocationNotAvailable":"Location not available","LogoControl.Title":"MapLibre logo","Map.Title":"Map","Marker.Title":"Map marker","NavigationControl.ResetBearing":"Reset bearing to north","NavigationControl.ZoomIn":"Zoom in","NavigationControl.ZoomOut":"Zoom out","Popup.Close":"Close popup","ScaleControl.Feet":"ft","ScaleControl.Meters":"m","ScaleControl.Kilometers":"km","ScaleControl.Miles":"mi","ScaleControl.NauticalMiles":"nm","TerrainControl.Enable":"Enable terrain","TerrainControl.Disable":"Disable terrain","CooperativeGesturesHandler.WindowsHelpText":"Use Ctrl + scroll to zoom the map","CooperativeGesturesHandler.MacHelpText":"Use ⌘ + scroll to zoom the map","CooperativeGesturesHandler.MobileHelpText":"Use two fingers to move the map"},Ls=i,Fs={hash:!1,interactive:!0,bearingSnap:7,attributionControl:Is,maplibreLogo:!1,failIfMajorPerformanceCaveat:!1,preserveDrawingBuffer:!1,refreshExpiredTiles:!0,scrollZoom:!0,minZoom:-2,maxZoom:22,minPitch:0,maxPitch:60,boxZoom:!0,dragRotate:!0,dragPan:!0,keyboard:!0,doubleClickZoom:!0,touchZoomRotate:!0,touchPitch:!0,cooperativeGestures:!1,trackResize:!0,center:[0,0],zoom:0,bearing:0,pitch:0,renderWorldCopies:!0,maxTileCacheSize:null,maxTileCacheZoomLevels:e.a.MAX_TILE_CACHE_ZOOM_LEVELS,transformRequest:null,transformCameraUpdate:null,fadeDuration:300,crossSourceCollisions:!0,clickTolerance:3,localIdeographFontFamily:"sans-serif",pitchWithRotate:!0,validateStyle:!0,maxCanvasSize:[4096,4096],cancelPendingTileRequestsWhileZooming:!0},Bs=t=>{t.touchstart=t.dragStart,t.touchmoveWindow=t.dragMove,t.touchend=t.dragEnd;},Os={showCompass:!0,showZoom:!0,visualizePitch:!1};class Ns{constructor(t,i,a=!1){this.mousedown=t=>{this.startMouse(e.e({},t,{ctrlKey:!0,preventDefault:()=>t.preventDefault()}),r.mousePos(this.element,t)),r.addEventListener(window,"mousemove",this.mousemove),r.addEventListener(window,"mouseup",this.mouseup);},this.mousemove=t=>{this.moveMouse(t,r.mousePos(this.element,t));},this.mouseup=t=>{this.mouseRotate.dragEnd(t),this.mousePitch&&this.mousePitch.dragEnd(t),this.offTemp();},this.touchstart=t=>{1!==t.targetTouches.length?this.reset():(this._startPos=this._lastPos=r.touchPos(this.element,t.targetTouches)[0],this.startTouch(t,this._startPos),r.addEventListener(window,"touchmove",this.touchmove,{passive:!1}),r.addEventListener(window,"touchend",this.touchend));},this.touchmove=t=>{1!==t.targetTouches.length?this.reset():(this._lastPos=r.touchPos(this.element,t.targetTouches)[0],this.moveTouch(t,this._lastPos));},this.touchend=t=>{0===t.targetTouches.length&&this._startPos&&this._lastPos&&this._startPos.dist(this._lastPos)<this._clickTolerance&&this.element.click(),delete this._startPos,delete this._lastPos,this.offTemp();},this.reset=()=>{this.mouseRotate.reset(),this.mousePitch&&this.mousePitch.reset(),this.touchRotate.reset(),this.touchPitch&&this.touchPitch.reset(),delete this._startPos,delete this._lastPos,this.offTemp();},this._clickTolerance=10;const s=t.dragRotate._mouseRotate.getClickTolerance(),o=t.dragRotate._mousePitch.getClickTolerance();this.element=i,this.mouseRotate=Ka({clickTolerance:s,enable:!0}),this.touchRotate=(({enable:t,clickTolerance:e,bearingDegreesPerPixelMoved:i=.8})=>{const a=new $a;return new Ga({clickTolerance:e,move:(t,e)=>({bearingDelta:(e.x-t.x)*i}),moveStateManager:a,enable:t,assignEvents:Bs})})({clickTolerance:s,enable:!0}),this.map=t,a&&(this.mousePitch=Ja({clickTolerance:o,enable:!0}),this.touchPitch=(({enable:t,clickTolerance:e,pitchDegreesPerPixelMoved:i=-.5})=>{const a=new $a;return new Ga({clickTolerance:e,move:(t,e)=>({pitchDelta:(e.y-t.y)*i}),moveStateManager:a,enable:t,assignEvents:Bs})})({clickTolerance:o,enable:!0})),r.addEventListener(i,"mousedown",this.mousedown),r.addEventListener(i,"touchstart",this.touchstart,{passive:!1}),r.addEventListener(i,"touchcancel",this.reset);}startMouse(t,e){this.mouseRotate.dragStart(t,e),this.mousePitch&&this.mousePitch.dragStart(t,e),r.disableDrag();}startTouch(t,e){this.touchRotate.dragStart(t,e),this.touchPitch&&this.touchPitch.dragStart(t,e),r.disableDrag();}moveMouse(t,e){const i=this.map,{bearingDelta:a}=this.mouseRotate.dragMove(t,e)||{};if(a&&i.setBearing(i.getBearing()+a),this.mousePitch){const{pitchDelta:a}=this.mousePitch.dragMove(t,e)||{};a&&i.setPitch(i.getPitch()+a);}}moveTouch(t,e){const i=this.map,{bearingDelta:a}=this.touchRotate.dragMove(t,e)||{};if(a&&i.setBearing(i.getBearing()+a),this.touchPitch){const{pitchDelta:a}=this.touchPitch.dragMove(t,e)||{};a&&i.setPitch(i.getPitch()+a);}}off(){const t=this.element;r.removeEventListener(t,"mousedown",this.mousedown),r.removeEventListener(t,"touchstart",this.touchstart,{passive:!1}),r.removeEventListener(window,"touchmove",this.touchmove,{passive:!1}),r.removeEventListener(window,"touchend",this.touchend),r.removeEventListener(t,"touchcancel",this.reset),this.offTemp();}offTemp(){r.enableDrag(),r.removeEventListener(window,"mousemove",this.mousemove),r.removeEventListener(window,"mouseup",this.mouseup),r.removeEventListener(window,"touchmove",this.touchmove,{passive:!1}),r.removeEventListener(window,"touchend",this.touchend);}}let Us;function js(t,i,a){const s=new e.N(t.lng,t.lat);if(t=new e.N(t.lng,t.lat),i){const s=new e.N(t.lng-360,t.lat),o=new e.N(t.lng+360,t.lat),r=a.locationPoint(t).distSqr(i);a.locationPoint(s).distSqr(i)<r?t=s:a.locationPoint(o).distSqr(i)<r&&(t=o);}for(;Math.abs(t.lng-a.center.lng)>180;){const e=a.locationPoint(t);if(e.x>=0&&e.y>=0&&e.x<=a.width&&e.y<=a.height)break;t.lng>a.center.lng?t.lng-=360:t.lng+=360;}return t.lng!==s.lng&&a.locationPoint(t).y>a.height/2-a.getHorizon()?t:s}const Zs={center:"translate(-50%,-50%)",top:"translate(-50%,0)","top-left":"translate(0,0)","top-right":"translate(-100%,0)",bottom:"translate(-50%,-100%)","bottom-left":"translate(0,-100%)","bottom-right":"translate(-100%,-100%)",left:"translate(0,-50%)",right:"translate(-100%,-50%)"};function qs(t,e,i){const a=t.classList;for(const t in Zs)a.remove(`maplibregl-${i}-anchor-${t}`);a.add(`maplibregl-${i}-anchor-${e}`);}class Vs extends e.E{constructor(t){if(super(),this._onKeyPress=t=>{const e=t.code,i=t.charCode||t.keyCode;"Space"!==e&&"Enter"!==e&&32!==i&&13!==i||this.togglePopup();},this._onMapClick=t=>{const e=t.originalEvent.target,i=this._element;this._popup&&(e===i||i.contains(e))&&this.togglePopup();},this._update=t=>{var e;if(!this._map)return;const i=this._map.loaded()&&!this._map.isMoving();("terrain"===(null==t?void 0:t.type)||"render"===(null==t?void 0:t.type)&&!i)&&this._map.once("render",this._update),this._lngLat=this._map.transform.renderWorldCopies?js(this._lngLat,this._flatPos,this._map.transform):null===(e=this._lngLat)||void 0===e?void 0:e.wrap(),this._flatPos=this._pos=this._map.project(this._lngLat)._add(this._offset),this._map.terrain&&(this._flatPos=this._map.transform.locationPoint(this._lngLat)._add(this._offset));let a="";"viewport"===this._rotationAlignment||"auto"===this._rotationAlignment?a=`rotateZ(${this._rotation}deg)`:"map"===this._rotationAlignment&&(a=`rotateZ(${this._rotation-this._map.getBearing()}deg)`);let s="";"viewport"===this._pitchAlignment||"auto"===this._pitchAlignment?s="rotateX(0deg)":"map"===this._pitchAlignment&&(s=`rotateX(${this._map.getPitch()}deg)`),this._subpixelPositioning||t&&"moveend"!==t.type||(this._pos=this._pos.round()),r.setTransform(this._element,`${Zs[this._anchor]} translate(${this._pos.x}px, ${this._pos.y}px) ${s} ${a}`),o.frameAsync(new AbortController).then((()=>{this._updateOpacity(t&&"moveend"===t.type);})).catch((()=>{}));},this._onMove=t=>{if(!this._isDragging){const e=this._clickTolerance||this._map._clickTolerance;this._isDragging=t.point.dist(this._pointerdownPos)>=e;}this._isDragging&&(this._pos=t.point.sub(this._positionDelta),this._lngLat=this._map.unproject(this._pos),this.setLngLat(this._lngLat),this._element.style.pointerEvents="none","pending"===this._state&&(this._state="active",this.fire(new e.k("dragstart"))),this.fire(new e.k("drag")));},this._onUp=()=>{this._element.style.pointerEvents="auto",this._positionDelta=null,this._pointerdownPos=null,this._isDragging=!1,this._map.off("mousemove",this._onMove),this._map.off("touchmove",this._onMove),"active"===this._state&&this.fire(new e.k("dragend")),this._state="inactive";},this._addDragHandler=t=>{this._element.contains(t.originalEvent.target)&&(t.preventDefault(),this._positionDelta=t.point.sub(this._pos).add(this._offset),this._pointerdownPos=t.point,this._state="pending",this._map.on("mousemove",this._onMove),this._map.on("touchmove",this._onMove),this._map.once("mouseup",this._onUp),this._map.once("touchend",this._onUp));},this._anchor=t&&t.anchor||"center",this._color=t&&t.color||"#3FB1CE",this._scale=t&&t.scale||1,this._draggable=t&&t.draggable||!1,this._clickTolerance=t&&t.clickTolerance||0,this._subpixelPositioning=t&&t.subpixelPositioning||!1,this._isDragging=!1,this._state="inactive",this._rotation=t&&t.rotation||0,this._rotationAlignment=t&&t.rotationAlignment||"auto",this._pitchAlignment=t&&t.pitchAlignment&&"auto"!==t.pitchAlignment?t.pitchAlignment:this._rotationAlignment,this.setOpacity(),this.setOpacity(null==t?void 0:t.opacity,null==t?void 0:t.opacityWhenCovered),t&&t.element)this._element=t.element,this._offset=e.P.convert(t&&t.offset||[0,0]);else {this._defaultMarker=!0,this._element=r.create("div");const i=r.createNS("http://www.w3.org/2000/svg","svg"),a=41,s=27;i.setAttributeNS(null,"display","block"),i.setAttributeNS(null,"height",`${a}px`),i.setAttributeNS(null,"width",`${s}px`),i.setAttributeNS(null,"viewBox",`0 0 ${s} ${a}`);const o=r.createNS("http://www.w3.org/2000/svg","g");o.setAttributeNS(null,"stroke","none"),o.setAttributeNS(null,"stroke-width","1"),o.setAttributeNS(null,"fill","none"),o.setAttributeNS(null,"fill-rule","evenodd");const n=r.createNS("http://www.w3.org/2000/svg","g");n.setAttributeNS(null,"fill-rule","nonzero");const l=r.createNS("http://www.w3.org/2000/svg","g");l.setAttributeNS(null,"transform","translate(3.0, 29.0)"),l.setAttributeNS(null,"fill","#000000");const 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this._element.style.opacity===this._opacityWhenCovered?this:t?(t.isOpen()?t.remove():(t.setLngLat(this._lngLat),t.addTo(this._map)),this):this}_updateOpacity(t=!1){var i,a;if(!(null===(i=this._map)||void 0===i?void 0:i.terrain))return void(this._element.style.opacity!==this._opacity&&(this._element.style.opacity=this._opacity));if(t)this._opacityTimeout=null;else {if(this._opacityTimeout)return;this._opacityTimeout=setTimeout((()=>{this._opacityTimeout=null;}),100);}const s=this._map,o=s.terrain.depthAtPoint(this._pos),r=s.terrain.getElevationForLngLatZoom(this._lngLat,s.transform.tileZoom);if(s.transform.lngLatToCameraDepth(this._lngLat,r)-o<.006)return void(this._element.style.opacity=this._opacity);const n=-this._offset.y/s.transform._pixelPerMeter,l=Math.sin(s.getPitch()*Math.PI/180)*n,h=s.terrain.depthAtPoint(new e.P(this._pos.x,this._pos.y-this._offset.y)),c=s.transform.lngLatToCameraDepth(this._lngLat,r+l)-h>.006;(null===(a=this._popup)||void 0===a?void 0:a.isOpen())&&c&&this._popup.remove(),this._element.style.opacity=c?this._opacityWhenCovered:this._opacity;}getOffset(){return this._offset}setOffset(t){return this._offset=e.P.convert(t),this._update(),this}addClassName(t){this._element.classList.add(t);}removeClassName(t){this._element.classList.remove(t);}toggleClassName(t){return this._element.classList.toggle(t)}setDraggable(t){return this._draggable=!!t,this._map&&(t?(this._map.on("mousedown",this._addDragHandler),this._map.on("touchstart",this._addDragHandler)):(this._map.off("mousedown",this._addDragHandler),this._map.off("touchstart",this._addDragHandler))),this}isDraggable(){return this._draggable}setRotation(t){return this._rotation=t||0,this._update(),this}getRotation(){return this._rotation}setRotationAlignment(t){return this._rotationAlignment=t||"auto",this._update(),this}getRotationAlignment(){return this._rotationAlignment}setPitchAlignment(t){return this._pitchAlignment=t&&"auto"!==t?t:this._rotationAlignment,this._update(),this}getPitchAlignment(){return this._pitchAlignment}setOpacity(t,e){return void 0===t&&void 0===e&&(this._opacity="1",this._opacityWhenCovered="0.2"),void 0!==t&&(this._opacity=t),void 0!==e&&(this._opacityWhenCovered=e),this._map&&this._updateOpacity(!0),this}}const Gs={positionOptions:{enableHighAccuracy:!1,maximumAge:0,timeout:6e3},fitBoundsOptions:{maxZoom:15},trackUserLocation:!1,showAccuracyCircle:!0,showUserLocation:!0};let Hs=0,Ws=!1;const $s={maxWidth:100,unit:"metric"};function Xs(t,e,i){const a=i&&i.maxWidth||100,s=t._container.clientHeight/2,o=t.unproject([0,s]),r=t.unproject([a,s]),n=o.distanceTo(r);if(i&&"imperial"===i.unit){const i=3.2808*n;i>5280?Ks(e,a,i/5280,t._getUIString("ScaleControl.Miles")):Ks(e,a,i,t._getUIString("ScaleControl.Feet"));}else i&&"nautical"===i.unit?Ks(e,a,n/1852,t._getUIString("ScaleControl.NauticalMiles")):n>=1e3?Ks(e,a,n/1e3,t._getUIString("ScaleControl.Kilometers")):Ks(e,a,n,t._getUIString("ScaleControl.Meters"));}function Ks(t,e,i,a){const s=function(t){const e=Math.pow(10,`${Math.floor(t)}`.length-1);let i=t/e;return i=i>=10?10:i>=5?5:i>=3?3:i>=2?2:i>=1?1:function(t){const e=Math.pow(10,Math.ceil(-Math.log(t)/Math.LN10));return Math.round(t*e)/e}(i),e*i}(i);t.style.width=e*(s/i)+"px",t.innerHTML=`${s}&nbsp;${a}`;}const Js={closeButton:!0,closeOnClick:!0,focusAfterOpen:!0,className:"",maxWidth:"240px",subpixelPositioning:!1},Ys=["a[href]","[tabindex]:not([tabindex='-1'])","[contenteditable]:not([contenteditable='false'])","button:not([disabled])","input:not([disabled])","select:not([disabled])","textarea:not([disabled])"].join(", ");function Qs(t){if(t){if("number"==typeof t){const i=Math.round(Math.abs(t)/Math.SQRT2);return {center:new e.P(0,0),top:new e.P(0,t),"top-left":new e.P(i,i),"top-right":new e.P(-i,i),bottom:new e.P(0,-t),"bottom-left":new e.P(i,-i),"bottom-right":new e.P(-i,-i),left:new e.P(t,0),right:new e.P(-t,0)}}if(t instanceof e.P||Array.isArray(t)){const i=e.P.convert(t);return {center:i,top:i,"top-left":i,"top-right":i,bottom:i,"bottom-left":i,"bottom-right":i,left:i,right:i}}return {center:e.P.convert(t.center||[0,0]),top:e.P.convert(t.top||[0,0]),"top-left":e.P.convert(t["top-left"]||[0,0]),"top-right":e.P.convert(t["top-right"]||[0,0]),bottom:e.P.convert(t.bottom||[0,0]),"bottom-left":e.P.convert(t["bottom-left"]||[0,0]),"bottom-right":e.P.convert(t["bottom-right"]||[0,0]),left:e.P.convert(t.left||[0,0]),right:e.P.convert(t.right||[0,0])}}return Qs(new e.P(0,0))}const to=i;t.AJAXError=e.bh,t.Evented=e.E,t.LngLat=e.N,t.MercatorCoordinate=e.Z,t.Point=e.P,t.addProtocol=e.bi,t.config=e.a,t.removeProtocol=e.bj,t.AttributionControl=Es,t.BoxZoomHandler=Ua,t.CanvasSource=et,t.CooperativeGesturesHandler=vs,t.DoubleClickZoomHandler=ds,t.DragPanHandler=ms,t.DragRotateHandler=fs,t.EdgeInsets=ba,t.FullscreenControl=class extends e.E{constructor(t={}){super(),this._onFullscreenChange=()=>{var t;let e=window.document.fullscreenElement||window.document.mozFullScreenElement||window.document.webkitFullscreenElement||window.document.msFullscreenElement;for(;null===(t=null==e?void 0:e.shadowRoot)||void 0===t?void 0:t.fullscreenElement;)e=e.shadowRoot.fullscreenElement;e===this._container!==this._fullscreen&&this._handleFullscreenChange();},this._onClickFullscreen=()=>{this._isFullscreen()?this._exitFullscreen():this._requestFullscreen();},this._fullscreen=!1,t&&t.container&&(t.container instanceof HTMLElement?this._container=t.container:e.w("Full screen control 'container' must be a DOM element.")),"onfullscreenchange"in document?this._fullscreenchange="fullscreenchange":"onmozfullscreenchange"in document?this._fullscreenchange="mozfullscreenchange":"onwebkitfullscreenchange"in document?this._fullscreenchange="webkitfullscreenchange":"onmsfullscreenchange"in document&&(this._fullscreenchange="MSFullscreenChange");}onAdd(t){return this._map=t,this._container||(this._container=this._map.getContainer()),this._controlContainer=r.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._setupUI(),this._controlContainer}onRemove(){r.remove(this._controlContainer),this._map=null,window.document.removeEventListener(this._fullscreenchange,this._onFullscreenChange);}_setupUI(){const t=this._fullscreenButton=r.create("button","maplibregl-ctrl-fullscreen",this._controlContainer);r.create("span","maplibregl-ctrl-icon",t).setAttribute("aria-hidden","true"),t.type="button",this._updateTitle(),this._fullscreenButton.addEventListener("click",this._onClickFullscreen),window.document.addEventListener(this._fullscreenchange,this._onFullscreenChange);}_updateTitle(){const t=this._getTitle();this._fullscreenButton.setAttribute("aria-label",t),this._fullscreenButton.title=t;}_getTitle(){return this._map._getUIString(this._isFullscreen()?"FullscreenControl.Exit":"FullscreenControl.Enter")}_isFullscreen(){return this._fullscreen}_handleFullscreenChange(){this._fullscreen=!this._fullscreen,this._fullscreenButton.classList.toggle("maplibregl-ctrl-shrink"),this._fullscreenButton.classList.toggle("maplibregl-ctrl-fullscreen"),this._updateTitle(),this._fullscreen?(this.fire(new 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e.k("fullscreenend")),this._prevCooperativeGesturesEnabled&&this._map.cooperativeGestures.enable());}_exitFullscreen(){window.document.exitFullscreen?window.document.exitFullscreen():window.document.mozCancelFullScreen?window.document.mozCancelFullScreen():window.document.msExitFullscreen?window.document.msExitFullscreen():window.document.webkitCancelFullScreen?window.document.webkitCancelFullScreen():this._togglePseudoFullScreen();}_requestFullscreen(){this._container.requestFullscreen?this._container.requestFullscreen():this._container.mozRequestFullScreen?this._container.mozRequestFullScreen():this._container.msRequestFullscreen?this._container.msRequestFullscreen():this._container.webkitRequestFullscreen?this._container.webkitRequestFullscreen():this._togglePseudoFullScreen();}_togglePseudoFullScreen(){this._container.classList.toggle("maplibregl-pseudo-fullscreen"),this._handleFullscreenChange(),this._map.resize();}},t.GeoJSONSource=J,t.GeolocateControl=class extends e.E{constructor(t){super(),this._onSuccess=t=>{if(this._map){if(this._isOutOfMapMaxBounds(t))return this._setErrorState(),this.fire(new e.k("outofmaxbounds",t)),this._updateMarker(),void this._finish();if(this.options.trackUserLocation)switch(this._lastKnownPosition=t,this._watchState){case"WAITING_ACTIVE":case"ACTIVE_LOCK":case"ACTIVE_ERROR":this._watchState="ACTIVE_LOCK",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active");break;case"BACKGROUND":case"BACKGROUND_ERROR":this._watchState="BACKGROUND",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-background");break;default:throw new Error(`Unexpected watchState ${this._watchState}`)}this.options.showUserLocation&&"OFF"!==this._watchState&&this._updateMarker(t),this.options.trackUserLocation&&"ACTIVE_LOCK"!==this._watchState||this._updateCamera(t),this.options.showUserLocation&&this._dotElement.classList.remove("maplibregl-user-location-dot-stale"),this.fire(new e.k("geolocate",t)),this._finish();}},this._updateCamera=t=>{const i=new e.N(t.coords.longitude,t.coords.latitude),a=t.coords.accuracy,s=this._map.getBearing(),o=e.e({bearing:s},this.options.fitBoundsOptions),r=H.fromLngLat(i,a);this._map.fitBounds(r,o,{geolocateSource:!0});},this._updateMarker=t=>{if(t){const i=new e.N(t.coords.longitude,t.coords.latitude);this._accuracyCircleMarker.setLngLat(i).addTo(this._map),this._userLocationDotMarker.setLngLat(i).addTo(this._map),this._accuracy=t.coords.accuracy,this.options.showUserLocation&&this.options.showAccuracyCircle&&this._updateCircleRadius();}else this._userLocationDotMarker.remove(),this._accuracyCircleMarker.remove();},this._onZoom=()=>{this.options.showUserLocation&&this.options.showAccuracyCircle&&this._updateCircleRadius();},this._onError=t=>{if(this._map){if(this.options.trackUserLocation)if(1===t.code){this._watchState="OFF",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active-error"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background-error"),this._geolocateButton.disabled=!0;const t=this._map._getUIString("GeolocateControl.LocationNotAvailable");this._geolocateButton.title=t,this._geolocateButton.setAttribute("aria-label",t),void 0!==this._geolocationWatchID&&this._clearWatch();}else {if(3===t.code&&Ws)return;this._setErrorState();}"OFF"!==this._watchState&&this.options.showUserLocation&&this._dotElement.classList.add("maplibregl-user-location-dot-stale"),this.fire(new e.k("error",t)),this._finish();}},this._finish=()=>{this._timeoutId&&clearTimeout(this._timeoutId),this._timeoutId=void 0;},this._setupUI=()=>{this._map&&(this._container.addEventListener("contextmenu",(t=>t.preventDefault())),this._geolocateButton=r.create("button","maplibregl-ctrl-geolocate",this._container),r.create("span","maplibregl-ctrl-icon",this._geolocateButton).setAttribute("aria-hidden","true"),this._geolocateButton.type="button",this._geolocateButton.disabled=!0);},this._finishSetupUI=t=>{if(this._map){if(!1===t){e.w("Geolocation support is not available so the GeolocateControl will be disabled.");const t=this._map._getUIString("GeolocateControl.LocationNotAvailable");this._geolocateButton.disabled=!0,this._geolocateButton.title=t,this._geolocateButton.setAttribute("aria-label",t);}else {const t=this._map._getUIString("GeolocateControl.FindMyLocation");this._geolocateButton.disabled=!1,this._geolocateButton.title=t,this._geolocateButton.setAttribute("aria-label",t);}this.options.trackUserLocation&&(this._geolocateButton.setAttribute("aria-pressed","false"),this._watchState="OFF"),this.options.showUserLocation&&(this._dotElement=r.create("div","maplibregl-user-location-dot"),this._userLocationDotMarker=new Vs({element:this._dotElement}),this._circleElement=r.create("div","maplibregl-user-location-accuracy-circle"),this._accuracyCircleMarker=new Vs({element:this._circleElement,pitchAlignment:"map"}),this.options.trackUserLocation&&(this._watchState="OFF"),this._map.on("zoom",this._onZoom)),this._geolocateButton.addEventListener("click",(()=>this.trigger())),this._setup=!0,this.options.trackUserLocation&&this._map.on("movestart",(t=>{t.geolocateSource||"ACTIVE_LOCK"!==this._watchState||t.originalEvent&&"resize"===t.originalEvent.type||(this._watchState="BACKGROUND",this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-background"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this.fire(new e.k("trackuserlocationend")),this.fire(new e.k("userlocationlostfocus")));}));}},this.options=e.e({},Gs,t);}onAdd(t){return this._map=t,this._container=r.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._setupUI(),function(){return e._(this,arguments,void 0,(function*(t=!1){if(void 0!==Us&&!t)return Us;if(void 0===window.navigator.permissions)return Us=!!window.navigator.geolocation,Us;try{const t=yield window.navigator.permissions.query({name:"geolocation"});Us="denied"!==t.state;}catch(t){Us=!!window.navigator.geolocation;}return Us}))}().then((t=>this._finishSetupUI(t))),this._container}onRemove(){void 0!==this._geolocationWatchID&&(window.navigator.geolocation.clearWatch(this._geolocationWatchID),this._geolocationWatchID=void 0),this.options.showUserLocation&&this._userLocationDotMarker&&this._userLocationDotMarker.remove(),this.options.showAccuracyCircle&&this._accuracyCircleMarker&&this._accuracyCircleMarker.remove(),r.remove(this._container),this._map.off("zoom",this._onZoom),this._map=void 0,Hs=0,Ws=!1;}_isOutOfMapMaxBounds(t){const e=this._map.getMaxBounds(),i=t.coords;return e&&(i.longitude<e.getWest()||i.longitude>e.getEast()||i.latitude<e.getSouth()||i.latitude>e.getNorth())}_setErrorState(){switch(this._watchState){case"WAITING_ACTIVE":this._watchState="ACTIVE_ERROR",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active-error");break;case"ACTIVE_LOCK":this._watchState="ACTIVE_ERROR",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting");break;case"BACKGROUND":this._watchState="BACKGROUND_ERROR",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-background-error"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting");break;case"ACTIVE_ERROR":break;default:throw new Error(`Unexpected watchState ${this._watchState}`)}}_updateCircleRadius(){const t=this._map.getBounds(),e=t.getSouthEast(),i=t.getNorthEast(),a=e.distanceTo(i),s=Math.ceil(this._accuracy/(a/this._map._container.clientHeight)*2);this._circleElement.style.width=`${s}px`,this._circleElement.style.height=`${s}px`;}trigger(){if(!this._setup)return e.w("Geolocate control triggered before added to a map"),!1;if(this.options.trackUserLocation){switch(this._watchState){case"OFF":this._watchState="WAITING_ACTIVE",this.fire(new e.k("trackuserlocationstart"));break;case"WAITING_ACTIVE":case"ACTIVE_LOCK":case"ACTIVE_ERROR":case"BACKGROUND_ERROR":Hs--,Ws=!1,this._watchState="OFF",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-active-error"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background"),this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background-error"),this.fire(new e.k("trackuserlocationend"));break;case"BACKGROUND":this._watchState="ACTIVE_LOCK",this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-background"),this._lastKnownPosition&&this._updateCamera(this._lastKnownPosition),this.fire(new e.k("trackuserlocationstart")),this.fire(new e.k("userlocationfocus"));break;default:throw new Error(`Unexpected watchState ${this._watchState}`)}switch(this._watchState){case"WAITING_ACTIVE":this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active");break;case"ACTIVE_LOCK":this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-active");break;case"OFF":break;default:throw new Error(`Unexpected watchState ${this._watchState}`)}if("OFF"===this._watchState&&void 0!==this._geolocationWatchID)this._clearWatch();else if(void 0===this._geolocationWatchID){let t;this._geolocateButton.classList.add("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.setAttribute("aria-pressed","true"),Hs++,Hs>1?(t={maximumAge:6e5,timeout:0},Ws=!0):(t=this.options.positionOptions,Ws=!1),this._geolocationWatchID=window.navigator.geolocation.watchPosition(this._onSuccess,this._onError,t);}}else window.navigator.geolocation.getCurrentPosition(this._onSuccess,this._onError,this.options.positionOptions),this._timeoutId=setTimeout(this._finish,1e4);return !0}_clearWatch(){window.navigator.geolocation.clearWatch(this._geolocationWatchID),this._geolocationWatchID=void 0,this._geolocateButton.classList.remove("maplibregl-ctrl-geolocate-waiting"),this._geolocateButton.setAttribute("aria-pressed","false"),this.options.showUserLocation&&this._updateMarker(null);}},t.Hash=Ea,t.ImageSource=Q,t.KeyboardHandler=ls,t.LngLatBounds=H,t.LogoControl=Ps,t.Map=class extends Ts{constructor(t){e.bf.mark(e.bg.create);const i=Object.assign(Object.assign({},Fs),t);if(null!=i.minZoom&&null!=i.maxZoom&&i.minZoom>i.maxZoom)throw new Error("maxZoom must be greater than or equal to minZoom");if(null!=i.minPitch&&null!=i.maxPitch&&i.minPitch>i.maxPitch)throw new Error("maxPitch must be greater than or equal to minPitch");if(null!=i.minPitch&&i.minPitch<0)throw new Error("minPitch must be greater than or equal to 0");if(null!=i.maxPitch&&i.maxPitch>85)throw new Error("maxPitch must be less than or equal to 85");if(super(new Ta(i.minZoom,i.maxZoom,i.minPitch,i.maxPitch,i.renderWorldCopies),{bearingSnap:i.bearingSnap}),this._idleTriggered=!1,this._crossFadingFactor=1,this._renderTaskQueue=new Cs,this._controls=[],this._mapId=e.a4(),this._contextLost=t=>{t.preventDefault(),this._frameRequest&&(this._frameRequest.abort(),this._frameRequest=null),this.fire(new e.k("webglcontextlost",{originalEvent:t}));},this._contextRestored=t=>{this._setupPainter(),this.resize(),this._update(),this.fire(new e.k("webglcontextrestored",{originalEvent:t}));},this._onMapScroll=t=>{if(t.target===this._container)return this._container.scrollTop=0,this._container.scrollLeft=0,!1},this._onWindowOnline=()=>{this._update();},this._interactive=i.interactive,this._maxTileCacheSize=i.maxTileCacheSize,this._maxTileCacheZoomLevels=i.maxTileCacheZoomLevels,this._failIfMajorPerformanceCaveat=!0===i.failIfMajorPerformanceCaveat,this._preserveDrawingBuffer=!0===i.preserveDrawingBuffer,this._antialias=!0===i.antialias,this._trackResize=!0===i.trackResize,this._bearingSnap=i.bearingSnap,this._refreshExpiredTiles=!0===i.refreshExpiredTiles,this._fadeDuration=i.fadeDuration,this._crossSourceCollisions=!0===i.crossSourceCollisions,this._collectResourceTiming=!0===i.collectResourceTiming,this._locale=Object.assign(Object.assign({},ks),i.locale),this._clickTolerance=i.clickTolerance,this._overridePixelRatio=i.pixelRatio,this._maxCanvasSize=i.maxCanvasSize,this.transformCameraUpdate=i.transformCameraUpdate,this.cancelPendingTileRequestsWhileZooming=!0===i.cancelPendingTileRequestsWhileZooming,this._imageQueueHandle=_.addThrottleControl((()=>this.isMoving())),this._requestManager=new p(i.transformRequest),"string"==typeof i.container){if(this._container=document.getElementById(i.container),!this._container)throw new Error(`Container '${i.container}' not found.`)}else {if(!(i.container instanceof HTMLElement))throw new Error("Invalid type: 'container' must be a String or HTMLElement.");this._container=i.container;}if(i.maxBounds&&this.setMaxBounds(i.maxBounds),this._setupContainer(),this._setupPainter(),this.on("move",(()=>this._update(!1))).on("moveend",(()=>this._update(!1))).on("zoom",(()=>this._update(!0))).on("terrain",(()=>{this.painter.terrainFacilitator.dirty=!0,this._update(!0);})).once("idle",(()=>{this._idleTriggered=!0;})),"undefined"!=typeof window){addEventListener("online",this._onWindowOnline,!1);let t=!1;const e=Ia((t=>{this._trackResize&&!this._removed&&(this.resize(t),this.redraw());}),50);this._resizeObserver=new ResizeObserver((i=>{t?e(i):t=!0;})),this._resizeObserver.observe(this._container);}this.handlers=new ws(this,i),this._hash=i.hash&&new Ea("string"==typeof i.hash&&i.hash||void 0).addTo(this),this._hash&&this._hash._onHashChange()||(this.jumpTo({center:i.center,zoom:i.zoom,bearing:i.bearing,pitch:i.pitch}),i.bounds&&(this.resize(),this.fitBounds(i.bounds,e.e({},i.fitBoundsOptions,{duration:0})))),this.resize(),this._localIdeographFontFamily=i.localIdeographFontFamily,this._validateStyle=i.validateStyle,i.style&&this.setStyle(i.style,{localIdeographFontFamily:i.localIdeographFontFamily}),i.attributionControl&&this.addControl(new Es("boolean"==typeof i.attributionControl?void 0:i.attributionControl)),i.maplibreLogo&&this.addControl(new Ps,i.logoPosition),this.on("style.load",(()=>{this.transform.unmodified&&this.jumpTo(this.style.stylesheet);})),this.on("data",(t=>{this._update("style"===t.dataType),this.fire(new e.k(`${t.dataType}data`,t));})),this.on("dataloading",(t=>{this.fire(new e.k(`${t.dataType}dataloading`,t));})),this.on("dataabort",(t=>{this.fire(new e.k("sourcedataabort",t));}));}_getMapId(){return this._mapId}addControl(t,i){if(void 0===i&&(i=t.getDefaultPosition?t.getDefaultPosition():"top-right"),!t||!t.onAdd)return this.fire(new e.j(new Error("Invalid argument to map.addControl(). Argument must be a control with onAdd and onRemove methods.")));const a=t.onAdd(this);this._controls.push(t);const s=this._controlPositions[i];return -1!==i.indexOf("bottom")?s.insertBefore(a,s.firstChild):s.appendChild(a),this}removeControl(t){if(!t||!t.onRemove)return this.fire(new e.j(new Error("Invalid argument to map.removeControl(). Argument must be a control with onAdd and onRemove methods.")));const i=this._controls.indexOf(t);return i>-1&&this._controls.splice(i,1),t.onRemove(this),this}hasControl(t){return this._controls.indexOf(t)>-1}calculateCameraOptionsFromTo(t,e,i,a){return null==a&&this.terrain&&(a=this.terrain.getElevationForLngLatZoom(i,this.transform.tileZoom)),super.calculateCameraOptionsFromTo(t,e,i,a)}resize(t){var i;const a=this._containerDimensions(),s=a[0],o=a[1],r=this._getClampedPixelRatio(s,o);if(this._resizeCanvas(s,o,r),this.painter.resize(s,o,r),this.painter.overLimit()){const t=this.painter.context.gl;this._maxCanvasSize=[t.drawingBufferWidth,t.drawingBufferHeight];const e=this._getClampedPixelRatio(s,o);this._resizeCanvas(s,o,e),this.painter.resize(s,o,e);}this.transform.resize(s,o),null===(i=this._requestedCameraState)||void 0===i||i.resize(s,o);const n=!this._moving;return n&&(this.stop(),this.fire(new e.k("movestart",t)).fire(new e.k("move",t))),this.fire(new e.k("resize",t)),n&&this.fire(new e.k("moveend",t)),this}_getClampedPixelRatio(t,e){const{0:i,1:a}=this._maxCanvasSize,s=this.getPixelRatio(),o=t*s,r=e*s;return Math.min(o>i?i/o:1,r>a?a/r:1)*s}getPixelRatio(){var t;return null!==(t=this._overridePixelRatio)&&void 0!==t?t:devicePixelRatio}setPixelRatio(t){this._overridePixelRatio=t,this.resize();}getBounds(){return this.transform.getBounds()}getMaxBounds(){return this.transform.getMaxBounds()}setMaxBounds(t){return this.transform.setMaxBounds(H.convert(t)),this._update()}setMinZoom(t){if((t=null==t?-2:t)>=-2&&t<=this.transform.maxZoom)return this.transform.minZoom=t,this._update(),this.getZoom()<t&&this.setZoom(t),this;throw new Error("minZoom must be between -2 and the current maxZoom, inclusive")}getMinZoom(){return this.transform.minZoom}setMaxZoom(t){if((t=null==t?22:t)>=this.transform.minZoom)return this.transform.maxZoom=t,this._update(),this.getZoom()>t&&this.setZoom(t),this;throw new Error("maxZoom must be greater than the current minZoom")}getMaxZoom(){return this.transform.maxZoom}setMinPitch(t){if((t=null==t?0:t)<0)throw new Error("minPitch must be greater than or equal to 0");if(t>=0&&t<=this.transform.maxPitch)return this.transform.minPitch=t,this._update(),this.getPitch()<t&&this.setPitch(t),this;throw new Error("minPitch must be between 0 and the current maxPitch, inclusive")}getMinPitch(){return this.transform.minPitch}setMaxPitch(t){if((t=null==t?60:t)>85)throw new Error("maxPitch must be less than or equal to 85");if(t>=this.transform.minPitch)return this.transform.maxPitch=t,this._update(),this.getPitch()>t&&this.setPitch(t),this;throw new Error("maxPitch must be greater than the current minPitch")}getMaxPitch(){return this.transform.maxPitch}getRenderWorldCopies(){return this.transform.renderWorldCopies}setRenderWorldCopies(t){return this.transform.renderWorldCopies=t,this._update()}project(t){return this.transform.locationPoint(e.N.convert(t),this.style&&this.terrain)}unproject(t){return this.transform.pointLocation(e.P.convert(t),this.terrain)}isMoving(){var t;return this._moving||(null===(t=this.handlers)||void 0===t?void 0:t.isMoving())}isZooming(){var t;return this._zooming||(null===(t=this.handlers)||void 0===t?void 0:t.isZooming())}isRotating(){var t;return this._rotating||(null===(t=this.handlers)||void 0===t?void 0:t.isRotating())}_createDelegatedListener(t,e,i){if("mouseenter"===t||"mouseover"===t){let a=!1;const s=s=>{const o=e.filter((t=>this.getLayer(t))),r=0!==o.length?this.queryRenderedFeatures(s.point,{layers:o}):[];r.length?a||(a=!0,i.call(this,new ka(t,this,s.originalEvent,{features:r}))):a=!1;};return {layers:e,listener:i,delegates:{mousemove:s,mouseout:()=>{a=!1;}}}}if("mouseleave"===t||"mouseout"===t){let a=!1;const s=s=>{const o=e.filter((t=>this.getLayer(t)));(0!==o.length?this.queryRenderedFeatures(s.point,{layers:o}):[]).length?a=!0:a&&(a=!1,i.call(this,new ka(t,this,s.originalEvent)));},o=e=>{a&&(a=!1,i.call(this,new ka(t,this,e.originalEvent)));};return {layers:e,listener:i,delegates:{mousemove:s,mouseout:o}}}{const a=t=>{const a=e.filter((t=>this.getLayer(t))),s=0!==a.length?this.queryRenderedFeatures(t.point,{layers:a}):[];s.length&&(t.features=s,i.call(this,t),delete t.features);};return {layers:e,listener:i,delegates:{[t]:a}}}}_saveDelegatedListener(t,e){this._delegatedListeners=this._delegatedListeners||{},this._delegatedListeners[t]=this._delegatedListeners[t]||[],this._delegatedListeners[t].push(e);}_removeDelegatedListener(t,e,i){if(!this._delegatedListeners||!this._delegatedListeners[t])return;const a=this._delegatedListeners[t];for(let t=0;t<a.length;t++){const s=a[t];if(s.listener===i&&s.layers.length===e.length&&s.layers.every((t=>e.includes(t)))){for(const t in s.delegates)this.off(t,s.delegates[t]);return void a.splice(t,1)}}}on(t,e,i){if(void 0===i)return super.on(t,e);const a=this._createDelegatedListener(t,"string"==typeof e?[e]:e,i);this._saveDelegatedListener(t,a);for(const t in a.delegates)this.on(t,a.delegates[t]);return this}once(t,e,i){if(void 0===i)return super.once(t,e);const a="string"==typeof e?[e]:e,s=this._createDelegatedListener(t,a,i);for(const e in s.delegates){const o=s.delegates[e];s.delegates[e]=(...e)=>{this._removeDelegatedListener(t,a,i),o(...e);};}this._saveDelegatedListener(t,s);for(const t in s.delegates)this.once(t,s.delegates[t]);return this}off(t,e,i){return void 0===i?super.off(t,e):(this._removeDelegatedListener(t,"string"==typeof e?[e]:e,i),this)}queryRenderedFeatures(t,i){if(!this.style)return [];let a;const s=t instanceof e.P||Array.isArray(t),o=s?t:[[0,0],[this.transform.width,this.transform.height]];if(i=i||(s?{}:t)||{},o instanceof e.P||"number"==typeof o[0])a=[e.P.convert(o)];else {const t=e.P.convert(o[0]),i=e.P.convert(o[1]);a=[t,new e.P(i.x,t.y),i,new e.P(t.x,i.y),t];}return this.style.queryRenderedFeatures(a,i,this.transform)}querySourceFeatures(t,e){return this.style.querySourceFeatures(t,e)}setStyle(t,i){return !1!==(i=e.e({},{localIdeographFontFamily:this._localIdeographFontFamily,validate:this._validateStyle},i)).diff&&i.localIdeographFontFamily===this._localIdeographFontFamily&&this.style&&t?(this._diffStyle(t,i),this):(this._localIdeographFontFamily=i.localIdeographFontFamily,this._updateStyle(t,i))}setTransformRequest(t){return this._requestManager.setTransformRequest(t),this}_getUIString(t){const e=this._locale[t];if(null==e)throw new Error(`Missing UI string '${t}'`);return e}_updateStyle(t,e){if(e.transformStyle&&this.style&&!this.style._loaded)return void this.style.once("style.load",(()=>this._updateStyle(t,e)));const i=this.style&&e.transformStyle?this.style.serialize():void 0;return this.style&&(this.style.setEventedParent(null),this.style._remove(!t)),t?(this.style=new de(this,e||{}),this.style.setEventedParent(this,{style:this.style}),"string"==typeof t?this.style.loadURL(t,e,i):this.style.loadJSON(t,e,i),this):(delete this.style,this)}_lazyInitEmptyStyle(){this.style||(this.style=new de(this,{}),this.style.setEventedParent(this,{style:this.style}),this.style.loadEmpty());}_diffStyle(t,i){if("string"==typeof t){const a=this._requestManager.transformRequest(t,"Style");e.h(a,new AbortController).then((t=>{this._updateDiff(t.data,i);})).catch((t=>{t&&this.fire(new e.j(t));}));}else "object"==typeof t&&this._updateDiff(t,i);}_updateDiff(t,i){try{this.style.setState(t,i)&&this._update(!0);}catch(a){e.w(`Unable to perform style diff: ${a.message||a.error||a}.  Rebuilding the style from scratch.`),this._updateStyle(t,i);}}getStyle(){if(this.style)return this.style.serialize()}isStyleLoaded(){return this.style?this.style.loaded():e.w("There is no style added to the map.")}addSource(t,e){return this._lazyInitEmptyStyle(),this.style.addSource(t,e),this._update(!0)}isSourceLoaded(t){const i=this.style&&this.style.sourceCaches[t];if(void 0!==i)return i.loaded();this.fire(new e.j(new Error(`There is no source with ID '${t}'`)));}setTerrain(t){if(this.style._checkLoaded(),this._terrainDataCallback&&this.style.off("data",this._terrainDataCallback),t){const i=this.style.sourceCaches[t.source];if(!i)throw new Error(`cannot load terrain, because there exists no source with ID: ${t.source}`);null===this.terrain&&i.reload();for(const i in this.style._layers){const a=this.style._layers[i];"hillshade"===a.type&&a.source===t.source&&e.w("You are using the same source for a hillshade layer and for 3D terrain. Please consider using two separate sources to improve rendering quality.");}this.terrain=new Ds(this.painter,i,t),this.painter.renderToTexture=new Rs(this.painter,this.terrain),this.transform.minElevationForCurrentTile=this.terrain.getMinTileElevationForLngLatZoom(this.transform.center,this.transform.tileZoom),this.transform.elevation=this.terrain.getElevationForLngLatZoom(this.transform.center,this.transform.tileZoom),this._terrainDataCallback=e=>{"style"===e.dataType?this.terrain.sourceCache.freeRtt():"source"===e.dataType&&e.tile&&(e.sourceId!==t.source||this._elevationFreeze||(this.transform.minElevationForCurrentTile=this.terrain.getMinTileElevationForLngLatZoom(this.transform.center,this.transform.tileZoom),this.transform.elevation=this.terrain.getElevationForLngLatZoom(this.transform.center,this.transform.tileZoom)),this.terrain.sourceCache.freeRtt(e.tile.tileID));},this.style.on("data",this._terrainDataCallback);}else this.terrain&&this.terrain.sourceCache.destruct(),this.terrain=null,this.painter.renderToTexture&&this.painter.renderToTexture.destruct(),this.painter.renderToTexture=null,this.transform.minElevationForCurrentTile=0,this.transform.elevation=0;return this.fire(new e.k("terrain",{terrain:t})),this}getTerrain(){var t,e;return null!==(e=null===(t=this.terrain)||void 0===t?void 0:t.options)&&void 0!==e?e:null}areTilesLoaded(){const t=this.style&&this.style.sourceCaches;for(const e in t){const i=t[e]._tiles;for(const t in i){const e=i[t];if("loaded"!==e.state&&"errored"!==e.state)return !1}}return !0}removeSource(t){return this.style.removeSource(t),this._update(!0)}getSource(t){return this.style.getSource(t)}addImage(t,i,a={}){const{pixelRatio:s=1,sdf:r=!1,stretchX:n,stretchY:l,content:h,textFitWidth:c,textFitHeight:u}=a;if(this._lazyInitEmptyStyle(),!(i instanceof HTMLImageElement||e.b(i))){if(void 0===i.width||void 0===i.height)return this.fire(new e.j(new Error("Invalid arguments to map.addImage(). The second argument must be an `HTMLImageElement`, `ImageData`, `ImageBitmap`, or object with `width`, `height`, and `data` properties with the same format as `ImageData`")));{const{width:a,height:o,data:d}=i,_=i;return this.style.addImage(t,{data:new e.R({width:a,height:o},new Uint8Array(d)),pixelRatio:s,stretchX:n,stretchY:l,content:h,textFitWidth:c,textFitHeight:u,sdf:r,version:0,userImage:_}),_.onAdd&&_.onAdd(this,t),this}}{const{width:a,height:d,data:_}=o.getImageData(i);this.style.addImage(t,{data:new e.R({width:a,height:d},_),pixelRatio:s,stretchX:n,stretchY:l,content:h,textFitWidth:c,textFitHeight:u,sdf:r,version:0});}}updateImage(t,i){const a=this.style.getImage(t);if(!a)return this.fire(new e.j(new Error("The map has no image with that id. If you are adding a new image use `map.addImage(...)` instead.")));const s=i instanceof HTMLImageElement||e.b(i)?o.getImageData(i):i,{width:r,height:n,data:l}=s;if(void 0===r||void 0===n)return this.fire(new e.j(new Error("Invalid arguments to map.updateImage(). The second argument must be an `HTMLImageElement`, `ImageData`, `ImageBitmap`, or object with `width`, `height`, and `data` properties with the same format as `ImageData`")));if(r!==a.data.width||n!==a.data.height)return this.fire(new e.j(new Error("The width and height of the updated image must be that same as the previous version of the image")));const h=!(i instanceof HTMLImageElement||e.b(i));return a.data.replace(l,h),this.style.updateImage(t,a),this}getImage(t){return this.style.getImage(t)}hasImage(t){return t?!!this.style.getImage(t):(this.fire(new e.j(new Error("Missing required image id"))),!1)}removeImage(t){this.style.removeImage(t);}loadImage(t){return _.getImage(this._requestManager.transformRequest(t,"Image"),new AbortController)}listImages(){return this.style.listImages()}addLayer(t,e){return this._lazyInitEmptyStyle(),this.style.addLayer(t,e),this._update(!0)}moveLayer(t,e){return this.style.moveLayer(t,e),this._update(!0)}removeLayer(t){return this.style.removeLayer(t),this._update(!0)}getLayer(t){return this.style.getLayer(t)}getLayersOrder(){return this.style.getLayersOrder()}setLayerZoomRange(t,e,i){return this.style.setLayerZoomRange(t,e,i),this._update(!0)}setFilter(t,e,i={}){return this.style.setFilter(t,e,i),this._update(!0)}getFilter(t){return this.style.getFilter(t)}setPaintProperty(t,e,i,a={}){return this.style.setPaintProperty(t,e,i,a),this._update(!0)}getPaintProperty(t,e){return this.style.getPaintProperty(t,e)}setLayoutProperty(t,e,i,a={}){return this.style.setLayoutProperty(t,e,i,a),this._update(!0)}getLayoutProperty(t,e){return this.style.getLayoutProperty(t,e)}setGlyphs(t,e={}){return this._lazyInitEmptyStyle(),this.style.setGlyphs(t,e),this._update(!0)}getGlyphs(){return this.style.getGlyphsUrl()}addSprite(t,e,i={}){return this._lazyInitEmptyStyle(),this.style.addSprite(t,e,i,(t=>{t||this._update(!0);})),this}removeSprite(t){return this._lazyInitEmptyStyle(),this.style.removeSprite(t),this._update(!0)}getSprite(){return this.style.getSprite()}setSprite(t,e={}){return this._lazyInitEmptyStyle(),this.style.setSprite(t,e,(t=>{t||this._update(!0);})),this}setLight(t,e={}){return this._lazyInitEmptyStyle(),this.style.setLight(t,e),this._update(!0)}getLight(){return this.style.getLight()}setSky(t){return this._lazyInitEmptyStyle(),this.style.setSky(t),this._update(!0)}getSky(){return this.style.getSky()}setFeatureState(t,e){return this.style.setFeatureState(t,e),this._update()}removeFeatureState(t,e){return this.style.removeFeatureState(t,e),this._update()}getFeatureState(t){return this.style.getFeatureState(t)}getContainer(){return this._container}getCanvasContainer(){return this._canvasContainer}getCanvas(){return this._canvas}_containerDimensions(){let t=0,e=0;return this._container&&(t=this._container.clientWidth||400,e=this._container.clientHeight||300),[t,e]}_setupContainer(){const t=this._container;t.classList.add("maplibregl-map");const e=this._canvasContainer=r.create("div","maplibregl-canvas-container",t);this._interactive&&e.classList.add("maplibregl-interactive"),this._canvas=r.create("canvas","maplibregl-canvas",e),this._canvas.addEventListener("webglcontextlost",this._contextLost,!1),this._canvas.addEventListener("webglcontextrestored",this._contextRestored,!1),this._canvas.setAttribute("tabindex",this._interactive?"0":"-1"),this._canvas.setAttribute("aria-label",this._getUIString("Map.Title")),this._canvas.setAttribute("role","region");const i=this._containerDimensions(),a=this._getClampedPixelRatio(i[0],i[1]);this._resizeCanvas(i[0],i[1],a);const s=this._controlContainer=r.create("div","maplibregl-control-container",t),o=this._controlPositions={};["top-left","top-right","bottom-left","bottom-right"].forEach((t=>{o[t]=r.create("div",`maplibregl-ctrl-${t} `,s);})),this._container.addEventListener("scroll",this._onMapScroll,!1);}_resizeCanvas(t,e,i){this._canvas.width=Math.floor(i*t),this._canvas.height=Math.floor(i*e),this._canvas.style.width=`${t}px`,this._canvas.style.height=`${e}px`;}_setupPainter(){const t={alpha:!0,stencil:!0,depth:!0,failIfMajorPerformanceCaveat:this._failIfMajorPerformanceCaveat,preserveDrawingBuffer:this._preserveDrawingBuffer,antialias:this._antialias||!1};let e=null;this._canvas.addEventListener("webglcontextcreationerror",(i=>{e={requestedAttributes:t},i&&(e.statusMessage=i.statusMessage,e.type=i.type);}),{once:!0});const i=this._canvas.getContext("webgl2",t)||this._canvas.getContext("webgl",t);if(!i){const t="Failed to initialize WebGL";throw e?(e.message=t,new Error(JSON.stringify(e))):new Error(t)}this.painter=new va(i,this.transform),n.testSupport(i);}loaded(){return !this._styleDirty&&!this._sourcesDirty&&!!this.style&&this.style.loaded()}_update(t){return this.style&&this.style._loaded?(this._styleDirty=this._styleDirty||t,this._sourcesDirty=!0,this.triggerRepaint(),this):this}_requestRenderFrame(t){return this._update(),this._renderTaskQueue.add(t)}_cancelRenderFrame(t){this._renderTaskQueue.remove(t);}_render(t){const i=this._idleTriggered?this._fadeDuration:0;if(this.painter.context.setDirty(),this.painter.setBaseState(),this._renderTaskQueue.run(t),this._removed)return;let a=!1;if(this.style&&this._styleDirty){this._styleDirty=!1;const t=this.transform.zoom,s=o.now();this.style.zoomHistory.update(t,s);const r=new e.z(t,{now:s,fadeDuration:i,zoomHistory:this.style.zoomHistory,transition:this.style.getTransition()}),n=r.crossFadingFactor();1===n&&n===this._crossFadingFactor||(a=!0,this._crossFadingFactor=n),this.style.update(r);}this.style&&this._sourcesDirty&&(this._sourcesDirty=!1,this.style._updateSources(this.transform)),this.terrain?(this.terrain.sourceCache.update(this.transform,this.terrain),this.transform.minElevationForCurrentTile=this.terrain.getMinTileElevationForLngLatZoom(this.transform.center,this.transform.tileZoom),this._elevationFreeze||(this.transform.elevation=this.terrain.getElevationForLngLatZoom(this.transform.center,this.transform.tileZoom))):(this.transform.minElevationForCurrentTile=0,this.transform.elevation=0),this._placementDirty=this.style&&this.style._updatePlacement(this.painter.transform,this.showCollisionBoxes,i,this._crossSourceCollisions),this.painter.render(this.style,{showTileBoundaries:this.showTileBoundaries,showOverdrawInspector:this._showOverdrawInspector,rotating:this.isRotating(),zooming:this.isZooming(),moving:this.isMoving(),fadeDuration:i,showPadding:this.showPadding}),this.fire(new e.k("render")),this.loaded()&&!this._loaded&&(this._loaded=!0,e.bf.mark(e.bg.load),this.fire(new e.k("load"))),this.style&&(this.style.hasTransitions()||a)&&(this._styleDirty=!0),this.style&&!this._placementDirty&&this.style._releaseSymbolFadeTiles();const s=this._sourcesDirty||this._styleDirty||this._placementDirty;return s||this._repaint?this.triggerRepaint():!this.isMoving()&&this.loaded()&&this.fire(new e.k("idle")),!this._loaded||this._fullyLoaded||s||(this._fullyLoaded=!0,e.bf.mark(e.bg.fullLoad)),this}redraw(){return this.style&&(this._frameRequest&&(this._frameRequest.abort(),this._frameRequest=null),this._render(0)),this}remove(){var t;this._hash&&this._hash.remove();for(const t of this._controls)t.onRemove(this);this._controls=[],this._frameRequest&&(this._frameRequest.abort(),this._frameRequest=null),this._renderTaskQueue.clear(),this.painter.destroy(),this.handlers.destroy(),delete this.handlers,this.setStyle(null),"undefined"!=typeof window&&removeEventListener("online",this._onWindowOnline,!1),_.removeThrottleControl(this._imageQueueHandle),null===(t=this._resizeObserver)||void 0===t||t.disconnect();const i=this.painter.context.gl.getExtension("WEBGL_lose_context");(null==i?void 0:i.loseContext)&&i.loseContext(),this._canvas.removeEventListener("webglcontextrestored",this._contextRestored,!1),this._canvas.removeEventListener("webglcontextlost",this._contextLost,!1),r.remove(this._canvasContainer),r.remove(this._controlContainer),this._container.classList.remove("maplibregl-map"),e.bf.clearMetrics(),this._removed=!0,this.fire(new e.k("remove"));}triggerRepaint(){this.style&&!this._frameRequest&&(this._frameRequest=new AbortController,o.frameAsync(this._frameRequest).then((t=>{e.bf.frame(t),this._frameRequest=null,this._render(t);})).catch((()=>{})));}get showTileBoundaries(){return !!this._showTileBoundaries}set showTileBoundaries(t){this._showTileBoundaries!==t&&(this._showTileBoundaries=t,this._update());}get showPadding(){return !!this._showPadding}set showPadding(t){this._showPadding!==t&&(this._showPadding=t,this._update());}get showCollisionBoxes(){return !!this._showCollisionBoxes}set showCollisionBoxes(t){this._showCollisionBoxes!==t&&(this._showCollisionBoxes=t,t?this.style._generateCollisionBoxes():this._update());}get showOverdrawInspector(){return !!this._showOverdrawInspector}set showOverdrawInspector(t){this._showOverdrawInspector!==t&&(this._showOverdrawInspector=t,this._update());}get repaint(){return !!this._repaint}set repaint(t){this._repaint!==t&&(this._repaint=t,this.triggerRepaint());}get vertices(){return !!this._vertices}set vertices(t){this._vertices=t,this._update();}get version(){return Ls}getCameraTargetElevation(){return this.transform.elevation}},t.MapMouseEvent=ka,t.MapTouchEvent=La,t.MapWheelEvent=Fa,t.Marker=Vs,t.NavigationControl=class{constructor(t){this._updateZoomButtons=()=>{const t=this._map.getZoom(),e=t===this._map.getMaxZoom(),i=t===this._map.getMinZoom();this._zoomInButton.disabled=e,this._zoomOutButton.disabled=i,this._zoomInButton.setAttribute("aria-disabled",e.toString()),this._zoomOutButton.setAttribute("aria-disabled",i.toString());},this._rotateCompassArrow=()=>{const t=this.options.visualizePitch?`scale(${1/Math.pow(Math.cos(this._map.transform.pitch*(Math.PI/180)),.5)}) rotateX(${this._map.transform.pitch}deg) rotateZ(${this._map.transform.angle*(180/Math.PI)}deg)`:`rotate(${this._map.transform.angle*(180/Math.PI)}deg)`;this._compassIcon.style.transform=t;},this._setButtonTitle=(t,e)=>{const i=this._map._getUIString(`NavigationControl.${e}`);t.title=i,t.setAttribute("aria-label",i);},this.options=e.e({},Os,t),this._container=r.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._container.addEventListener("contextmenu",(t=>t.preventDefault())),this.options.showZoom&&(this._zoomInButton=this._createButton("maplibregl-ctrl-zoom-in",(t=>this._map.zoomIn({},{originalEvent:t}))),r.create("span","maplibregl-ctrl-icon",this._zoomInButton).setAttribute("aria-hidden","true"),this._zoomOutButton=this._createButton("maplibregl-ctrl-zoom-out",(t=>this._map.zoomOut({},{originalEvent:t}))),r.create("span","maplibregl-ctrl-icon",this._zoomOutButton).setAttribute("aria-hidden","true")),this.options.showCompass&&(this._compass=this._createButton("maplibregl-ctrl-compass",(t=>{this.options.visualizePitch?this._map.resetNorthPitch({},{originalEvent:t}):this._map.resetNorth({},{originalEvent:t});})),this._compassIcon=r.create("span","maplibregl-ctrl-icon",this._compass),this._compassIcon.setAttribute("aria-hidden","true"));}onAdd(t){return this._map=t,this.options.showZoom&&(this._setButtonTitle(this._zoomInButton,"ZoomIn"),this._setButtonTitle(this._zoomOutButton,"ZoomOut"),this._map.on("zoom",this._updateZoomButtons),this._updateZoomButtons()),this.options.showCompass&&(this._setButtonTitle(this._compass,"ResetBearing"),this.options.visualizePitch&&this._map.on("pitch",this._rotateCompassArrow),this._map.on("rotate",this._rotateCompassArrow),this._rotateCompassArrow(),this._handler=new Ns(this._map,this._compass,this.options.visualizePitch)),this._container}onRemove(){r.remove(this._container),this.options.showZoom&&this._map.off("zoom",this._updateZoomButtons),this.options.showCompass&&(this.options.visualizePitch&&this._map.off("pitch",this._rotateCompassArrow),this._map.off("rotate",this._rotateCompassArrow),this._handler.off(),delete this._handler),delete this._map;}_createButton(t,e){const i=r.create("button",t,this._container);return i.type="button",i.addEventListener("click",e),i}},t.Popup=class extends e.E{constructor(t){super(),this.remove=()=>(this._content&&r.remove(this._content),this._container&&(r.remove(this._container),delete this._container),this._map&&(this._map.off("move",this._update),this._map.off("move",this._onClose),this._map.off("click",this._onClose),this._map.off("remove",this.remove),this._map.off("mousemove",this._onMouseMove),this._map.off("mouseup",this._onMouseUp),this._map.off("drag",this._onDrag),this._map._canvasContainer.classList.remove("maplibregl-track-pointer"),delete this._map,this.fire(new e.k("close"))),this),this._onMouseUp=t=>{this._update(t.point);},this._onMouseMove=t=>{this._update(t.point);},this._onDrag=t=>{this._update(t.point);},this._update=t=>{var e;if(!this._map||!this._lngLat&&!this._trackPointer||!this._content)return;if(!this._container){if(this._container=r.create("div","maplibregl-popup",this._map.getContainer()),this._tip=r.create("div","maplibregl-popup-tip",this._container),this._container.appendChild(this._content),this.options.className)for(const t of this.options.className.split(" "))this._container.classList.add(t);this._closeButton&&this._closeButton.setAttribute("aria-label",this._map._getUIString("Popup.Close")),this._trackPointer&&this._container.classList.add("maplibregl-popup-track-pointer");}if(this.options.maxWidth&&this._container.style.maxWidth!==this.options.maxWidth&&(this._container.style.maxWidth=this.options.maxWidth),this._lngLat=this._map.transform.renderWorldCopies&&!this._trackPointer?js(this._lngLat,this._flatPos,this._map.transform):null===(e=this._lngLat)||void 0===e?void 0:e.wrap(),this._trackPointer&&!t)return;const i=this._flatPos=this._pos=this._trackPointer&&t?t:this._map.project(this._lngLat);this._map.terrain&&(this._flatPos=this._trackPointer&&t?t:this._map.transform.locationPoint(this._lngLat));let a=this.options.anchor;const s=Qs(this.options.offset);if(!a){const t=this._container.offsetWidth,e=this._container.offsetHeight;let o;o=i.y+s.bottom.y<e?["top"]:i.y>this._map.transform.height-e?["bottom"]:[],i.x<t/2?o.push("left"):i.x>this._map.transform.width-t/2&&o.push("right"),a=0===o.length?"bottom":o.join("-");}let o=i.add(s[a]);this.options.subpixelPositioning||(o=o.round()),r.setTransform(this._container,`${Zs[a]} translate(${o.x}px,${o.y}px)`),qs(this._container,a,"popup");},this._onClose=()=>{this.remove();},this.options=e.e(Object.create(Js),t);}addTo(t){return this._map&&this.remove(),this._map=t,this.options.closeOnClick&&this._map.on("click",this._onClose),this.options.closeOnMove&&this._map.on("move",this._onClose),this._map.on("remove",this.remove),this._update(),this._focusFirstElement(),this._trackPointer?(this._map.on("mousemove",this._onMouseMove),this._map.on("mouseup",this._onMouseUp),this._container&&this._container.classList.add("maplibregl-popup-track-pointer"),this._map._canvasContainer.classList.add("maplibregl-track-pointer")):this._map.on("move",this._update),this.fire(new e.k("open")),this}isOpen(){return !!this._map}getLngLat(){return this._lngLat}setLngLat(t){return this._lngLat=e.N.convert(t),this._pos=null,this._flatPos=null,this._trackPointer=!1,this._update(),this._map&&(this._map.on("move",this._update),this._map.off("mousemove",this._onMouseMove),this._container&&this._container.classList.remove("maplibregl-popup-track-pointer"),this._map._canvasContainer.classList.remove("maplibregl-track-pointer")),this}trackPointer(){return this._trackPointer=!0,this._pos=null,this._flatPos=null,this._update(),this._map&&(this._map.off("move",this._update),this._map.on("mousemove",this._onMouseMove),this._map.on("drag",this._onDrag),this._container&&this._container.classList.add("maplibregl-popup-track-pointer"),this._map._canvasContainer.classList.add("maplibregl-track-pointer")),this}getElement(){return this._container}setText(t){return this.setDOMContent(document.createTextNode(t))}setHTML(t){const e=document.createDocumentFragment(),i=document.createElement("body");let a;for(i.innerHTML=t;a=i.firstChild,a;)e.appendChild(a);return this.setDOMContent(e)}getMaxWidth(){var t;return null===(t=this._container)||void 0===t?void 0:t.style.maxWidth}setMaxWidth(t){return this.options.maxWidth=t,this._update(),this}setDOMContent(t){if(this._content)for(;this._content.hasChildNodes();)this._content.firstChild&&this._content.removeChild(this._content.firstChild);else this._content=r.create("div","maplibregl-popup-content",this._container);return this._content.appendChild(t),this._createCloseButton(),this._update(),this._focusFirstElement(),this}addClassName(t){return this._container&&this._container.classList.add(t),this}removeClassName(t){return this._container&&this._container.classList.remove(t),this}setOffset(t){return this.options.offset=t,this._update(),this}toggleClassName(t){if(this._container)return this._container.classList.toggle(t)}setSubpixelPositioning(t){this.options.subpixelPositioning=t;}_createCloseButton(){this.options.closeButton&&(this._closeButton=r.create("button","maplibregl-popup-close-button",this._content),this._closeButton.type="button",this._closeButton.innerHTML="&#215;",this._closeButton.addEventListener("click",this._onClose));}_focusFirstElement(){if(!this.options.focusAfterOpen||!this._container)return;const t=this._container.querySelector(Ys);t&&t.focus();}},t.RasterDEMTileSource=K,t.RasterTileSource=X,t.ScaleControl=class{constructor(t){this._onMove=()=>{Xs(this._map,this._container,this.options);},this.setUnit=t=>{this.options.unit=t,Xs(this._map,this._container,this.options);},this.options=Object.assign(Object.assign({},$s),t);}getDefaultPosition(){return "bottom-left"}onAdd(t){return this._map=t,this._container=r.create("div","maplibregl-ctrl maplibregl-ctrl-scale",t.getContainer()),this._map.on("move",this._onMove),this._onMove(),this._container}onRemove(){r.remove(this._container),this._map.off("move",this._onMove),this._map=void 0;}},t.ScrollZoomHandler=us,t.Style=de,t.TerrainControl=class{constructor(t){this._toggleTerrain=()=>{this._map.getTerrain()?this._map.setTerrain(null):this._map.setTerrain(this.options),this._updateTerrainIcon();},this._updateTerrainIcon=()=>{this._terrainButton.classList.remove("maplibregl-ctrl-terrain"),this._terrainButton.classList.remove("maplibregl-ctrl-terrain-enabled"),this._map.terrain?(this._terrainButton.classList.add("maplibregl-ctrl-terrain-enabled"),this._terrainButton.title=this._map._getUIString("TerrainControl.Disable")):(this._terrainButton.classList.add("maplibregl-ctrl-terrain"),this._terrainButton.title=this._map._getUIString("TerrainControl.Enable"));},this.options=t;}onAdd(t){return this._map=t,this._container=r.create("div","maplibregl-ctrl maplibregl-ctrl-group"),this._terrainButton=r.create("button","maplibregl-ctrl-terrain",this._container),r.create("span","maplibregl-ctrl-icon",this._terrainButton).setAttribute("aria-hidden","true"),this._terrainButton.type="button",this._terrainButton.addEventListener("click",this._toggleTerrain),this._updateTerrainIcon(),this._map.on("terrain",this._updateTerrainIcon),this._container}onRemove(){r.remove(this._container),this._map.off("terrain",this._updateTerrainIcon),this._map=void 0;}},t.TwoFingersTouchPitchHandler=rs,t.TwoFingersTouchRotateHandler=ss,t.TwoFingersTouchZoomHandler=is,t.TwoFingersTouchZoomRotateHandler=gs,t.VectorTileSource=$,t.VideoSource=tt,t.addSourceType=(t,i)=>e._(void 0,void 0,void 0,(function*(){if(at(t))throw new Error(`A source type called "${t}" already exists.`);((t,e)=>{it[t]=e;})(t,i);})),t.clearPrewarmedResources=function(){const t=B;t&&(t.isPreloaded()&&1===t.numActive()?(t.release(k),B=null):console.warn("Could not clear WebWorkers since there are active Map instances that still reference it. The pre-warmed WebWorker pool can only be cleared when all map instances have been removed with map.remove()"));},t.getMaxParallelImageRequests=function(){return e.a.MAX_PARALLEL_IMAGE_REQUESTS},t.getRTLTextPluginStatus=function(){return nt().getRTLTextPluginStatus()},t.getVersion=function(){return to},t.getWorkerCount=function(){return L.workerCount},t.getWorkerUrl=function(){return e.a.WORKER_URL},t.importScriptInWorkers=function(t){return j().broadcast("IS",t)},t.prewarm=function(){N().acquire(k);},t.setMaxParallelImageRequests=function(t){e.a.MAX_PARALLEL_IMAGE_REQUESTS=t;},t.setRTLTextPlugin=function(t,e){return nt().setRTLTextPlugin(t,e)},t.setWorkerCount=function(t){L.workerCount=t;},t.setWorkerUrl=function(t){e.a.WORKER_URL=t;};}));
+
+//
+// Our custom intro provides a specialized "define()" function, called by the
+// AMD modules below, that sets up the worker blob URL and then executes the
+// main module, storing its exported value as 'maplibregl'
+
+
+var maplibregl$1 = maplibregl;
+
+return maplibregl$1;
+
+}));
+//# sourceMappingURL=maplibre-gl.js.map
diff --git a/web/vendor/qr/jsqr.bundle.mjs b/web/vendor/qr/jsqr.bundle.mjs
new file mode 100644
index 0000000..557097c
--- /dev/null
+++ b/web/vendor/qr/jsqr.bundle.mjs
@@ -0,0 +1,3 @@
+/* esm.sh - jsqr@1.4.0 */
+var A0=Object.create;var B0=Object.defineProperty;var o0=Object.getOwnPropertyDescriptor;var r0=Object.getOwnPropertyNames;var D0=Object.getPrototypeOf,t0=Object.prototype.hasOwnProperty;var a0=(N,u)=>()=>(u||N((u={exports:{}}).exports,u),u.exports);var s0=(N,u,P,g)=>{if(u&&typeof u=="object"||typeof u=="function")for(let f of r0(u))!t0.call(N,f)&&f!==P&&B0(N,f,{get:()=>u[f],enumerable:!(g=o0(u,f))||g.enumerable});return N};var c0=(N,u,P)=>(P=N!=null?A0(D0(N)):{},s0(u||!N||!N.__esModule?B0(P,"default",{value:N,enumerable:!0}):P,N));var C0=a0((W,x0)=>{(function(u,P){typeof W=="object"&&typeof x0=="object"?x0.exports=P():typeof define=="function"&&define.amd?define([],P):typeof W=="object"?W.jsQR=P():u.jsQR=P()})(typeof self<"u"?self:W,function(){return function(N){var u={};function P(g){if(u[g])return u[g].exports;var f=u[g]={i:g,l:!1,exports:{}};return N[g].call(f.exports,f,f.exports,P),f.l=!0,f.exports}return P.m=N,P.c=u,P.d=function(g,f,l){P.o(g,f)||Object.defineProperty(g,f,{configurable:!1,enumerable:!0,get:l})},P.n=function(g){var f=g&&g.__esModule?function(){return g.default}:function(){return g};return P.d(f,"a",f),f},P.o=function(g,f){return Object.prototype.hasOwnProperty.call(g,f)},P.p="",P(P.s=3)}([function(N,u,P){"use strict";Object.defineProperty(u,"__esModule",{value:!0});var g=function(){function f(l,s){this.width=s,this.height=l.length/s,this.data=l}return f.createEmpty=function(l,s){return new f(new Uint8ClampedArray(l*s),l)},f.prototype.get=function(l,s){return l<0||l>=this.width||s<0||s>=this.height?!1:!!this.data[s*this.width+l]},f.prototype.set=function(l,s,c){this.data[s*this.width+l]=c?1:0},f.prototype.setRegion=function(l,s,c,o,E){for(var r=s;r<s+o;r++)for(var a=l;a<l+c;a++)this.set(a,r,!!E)},f}();u.BitMatrix=g},function(N,u,P){"use strict";Object.defineProperty(u,"__esModule",{value:!0});var g=P(2);function f(s,c){return s^c}u.addOrSubtractGF=f;var l=function(){function s(c,o,E){this.primitive=c,this.size=o,this.generatorBase=E,this.expTable=new Array(this.size),this.logTable=new Array(this.size);for(var r=1,a=0;a<this.size;a++)this.expTable[a]=r,r=r*2,r>=this.size&&(r=(r^this.primitive)&this.size-1);for(var a=0;a<this.size-1;a++)this.logTable[this.expTable[a]]=a;this.zero=new g.default(this,Uint8ClampedArray.from([0])),this.one=new g.default(this,Uint8ClampedArray.from([1]))}return s.prototype.multiply=function(c,o){return c===0||o===0?0:this.expTable[(this.logTable[c]+this.logTable[o])%(this.size-1)]},s.prototype.inverse=function(c){if(c===0)throw new Error("Can't invert 0");return this.expTable[this.size-this.logTable[c]-1]},s.prototype.buildMonomial=function(c,o){if(c<0)throw new Error("Invalid monomial degree less than 0");if(o===0)return this.zero;var E=new Uint8ClampedArray(c+1);return E[0]=o,new g.default(this,E)},s.prototype.log=function(c){if(c===0)throw new Error("Can't take log(0)");return this.logTable[c]},s.prototype.exp=function(c){return this.expTable[c]},s}();u.default=l},function(N,u,P){"use strict";Object.defineProperty(u,"__esModule",{value:!0});var g=P(1),f=function(){function l(s,c){if(c.length===0)throw new Error("No coefficients.");this.field=s;var o=c.length;if(o>1&&c[0]===0){for(var E=1;E<o&&c[E]===0;)E++;if(E===o)this.coefficients=s.zero.coefficients;else{this.coefficients=new Uint8ClampedArray(o-E);for(var r=0;r<this.coefficients.length;r++)this.coefficients[r]=c[E+r]}}else this.coefficients=c}return l.prototype.degree=function(){return this.coefficients.length-1},l.prototype.isZero=function(){return this.coefficients[0]===0},l.prototype.getCoefficient=function(s){return this.coefficients[this.coefficients.length-1-s]},l.prototype.addOrSubtract=function(s){var c;if(this.isZero())return s;if(s.isZero())return this;var o=this.coefficients,E=s.coefficients;o.length>E.length&&(c=[E,o],o=c[0],E=c[1]);for(var r=new 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T=0;T<O.numBlocks;T++)t.push({numDataCodewords:O.dataCodewordsPerBlock,codewords:[]}),n+=O.dataCodewordsPerBlock+C.ecCodewordsPerBlock}),x.length<n)return null;x=x.slice(0,n);for(var k=C.ecBlocks[0].dataCodewordsPerBlock,m=0;m<k;m++)for(var v=0,M=t;v<M.length;v++){var p=M[v];p.codewords.push(x.shift())}if(C.ecBlocks.length>1)for(var h=C.ecBlocks[0].numBlocks,I=C.ecBlocks[1].numBlocks,m=0;m<I;m++)t[h+m].codewords.push(x.shift());for(;x.length>0;)for(var b=0,S=t;b<S.length;b++){var p=S[b];p.codewords.push(x.shift())}return t}function w(x){var B=d(x);if(!B)return null;var e=D(x);if(!e)return null;var C=F(x,B,e),t=i(C,B,e.errorCorrectionLevel);if(!t)return null;for(var n=t.reduce(function(b,S){return b+S.numDataCodewords},0),k=new Uint8ClampedArray(n),m=0,v=0,M=t;v<M.length;v++){var p=M[v],h=l.decode(p.codewords,p.codewords.length-p.numDataCodewords);if(!h)return null;for(var I=0;I<p.numDataCodewords;I++)k[m++]=h[I]}try{return f.decode(k,B.versionNumber)}catch{return null}}function 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e=Math.floor(B/10),C=B%10;i.push(48+e,48+C),w+=e.toString()+C.toString()}else if(x===1){var B=d.readBits(4);if(B>=10)throw new Error("Invalid numeric value above 9");i.push(48+B),w+=B.toString()}return{bytes:i,text:w}}var o=["0","1","2","3","4","5","6","7","8","9","A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z"," ","$","%","*","+","-",".","/",":"];function E(d,D){for(var i=[],w="",A=[9,11,13][D],x=d.readBits(A);x>=2;){var B=d.readBits(11),e=Math.floor(B/45),C=B%45;i.push(o[e].charCodeAt(0),o[C].charCodeAt(0)),w+=o[e]+o[C],x-=2}if(x===1){var e=d.readBits(6);i.push(o[e].charCodeAt(0)),w+=o[e]}return{bytes:i,text:w}}function r(d,D){for(var i=[],w="",A=[8,16,16][D],x=d.readBits(A),B=0;B<x;B++){var e=d.readBits(8);i.push(e)}try{w+=decodeURIComponent(i.map(function(C){return"%"+("0"+C.toString(16)).substr(-2)}).join(""))}catch{}return{bytes:i,text:w}}function a(d,D){for(var i=[],w="",A=[8,10,12][D],x=d.readBits(A),B=0;B<x;B++){var 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\ No newline at end of file
diff --git a/web/vendor/qr/jsqr.js b/web/vendor/qr/jsqr.js
new file mode 100644
index 0000000..adb2da4
--- /dev/null
+++ b/web/vendor/qr/jsqr.js
@@ -0,0 +1,3 @@
+/* esm.sh - jsqr@1.4.0 */
+export * from "/jsqr@1.4.0/es2022/jsqr.bundle.mjs";
+export { default } from "/jsqr@1.4.0/es2022/jsqr.bundle.mjs";
diff --git a/web/vendor/qr/qrcode.bundle.mjs b/web/vendor/qr/qrcode.bundle.mjs
new file mode 100644
index 0000000..e9fdd29
--- /dev/null
+++ b/web/vendor/qr/qrcode.bundle.mjs
@@ -0,0 +1,10 @@
+/* esm.sh - qrcode@1.5.4 */
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this.data.length};U.prototype.getBitsLength=function(){return U.getBitsLength(this.data.length)};U.prototype.write=function(t){let e;for(e=0;e+2<=this.data.length;e+=2){let r=mt.indexOf(this.data[e])*45;r+=mt.indexOf(this.data[e+1]),t.put(r,11)}this.data.length%2&&t.put(mt.indexOf(this.data[e]),6)};le.exports=U});var ge=g((er,fe)=>{var un=M();function q(n){this.mode=un.BYTE,typeof n=="string"?this.data=new TextEncoder().encode(n):this.data=new Uint8Array(n)}q.getBitsLength=function(t){return t*8};q.prototype.getLength=function(){return this.data.length};q.prototype.getBitsLength=function(){return q.getBitsLength(this.data.length)};q.prototype.write=function(n){for(let t=0,e=this.data.length;t<e;t++)n.put(this.data[t],8)};fe.exports=q});var he=g((nr,de)=>{var cn=M(),ln=I();function D(n){this.mode=cn.KANJI,this.data=n}D.getBitsLength=function(t){return t*13};D.prototype.getLength=function(){return this.data.length};D.prototype.getBitsLength=function(){return D.getBitsLength(this.data.length)};D.prototype.write=function(n){let t;for(t=0;t<this.data.length;t++){let e=ln.toSJIS(this.data[t]);if(e>=33088&&e<=40956)e-=33088;else if(e>=57408&&e<=60351)e-=49472;else throw new Error("Invalid SJIS character: "+this.data[t]+`
+Make sure your charset is UTF-8`);e=(e>>>8&255)*192+(e&255),n.put(e,13)}};de.exports=D});var pe=g((rr,yt)=>{"use strict";var K={single_source_shortest_paths:function(n,t,e){var r={},o={};o[t]=0;var i=K.PriorityQueue.make();i.push(t,0);for(var s,u,c,l,a,w,h,y,A;!i.empty();){s=i.pop(),u=s.value,l=s.cost,a=n[u]||{};for(c in a)a.hasOwnProperty(c)&&(w=a[c],h=l+w,y=o[c],A=typeof o[c]>"u",(A||y>h)&&(o[c]=h,i.push(c,h),r[c]=u))}if(typeof e<"u"&&typeof o[e]>"u"){var T=["Could not find a path from ",t," to ",e,"."].join("");throw new Error(T)}return r},extract_shortest_path_from_predecessor_list:function(n,t){for(var e=[],r=t,o;r;)e.push(r),o=n[r],r=n[r];return e.reverse(),e},find_path:function(n,t,e){var r=K.single_source_shortest_paths(n,t,e);return K.extract_shortest_path_from_predecessor_list(r,e)},PriorityQueue:{make:function(n){var t=K.PriorityQueue,e={},r;n=n||{};for(r in t)t.hasOwnProperty(r)&&(e[r]=t[r]);return e.queue=[],e.sorter=n.sorter||t.default_sorter,e},default_sorter:function(n,t){return n.cost-t.cost},push:function(n,t){var e={value:n,cost:t};this.queue.push(e),this.queue.sort(this.sorter)},pop:function(){return this.queue.shift()},empty:function(){return this.queue.length===0}}};typeof yt<"u"&&(yt.exports=K)});var Te=g(F=>{var f=M(),ye=ce(),Ee=ae(),Ce=ge(),Be=he(),J=dt(),v=I(),an=pe();function we(n){return unescape(encodeURIComponent(n)).length}function Y(n,t,e){let r=[],o;for(;(o=n.exec(e))!==null;)r.push({data:o[0],index:o.index,mode:t,length:o[0].length});return r}function Ae(n){let t=Y(J.NUMERIC,f.NUMERIC,n),e=Y(J.ALPHANUMERIC,f.ALPHANUMERIC,n),r,o;return v.isKanjiModeEnabled()?(r=Y(J.BYTE,f.BYTE,n),o=Y(J.KANJI,f.KANJI,n)):(r=Y(J.BYTE_KANJI,f.BYTE,n),o=[]),t.concat(e,r,o).sort(function(s,u){return s.index-u.index}).map(function(s){return{data:s.data,mode:s.mode,length:s.length}})}function Et(n,t){switch(t){case f.NUMERIC:return ye.getBitsLength(n);case f.ALPHANUMERIC:return Ee.getBitsLength(n);case f.KANJI:return Be.getBitsLength(n);case f.BYTE:return Ce.getBitsLength(n)}}function fn(n){return n.reduce(function(t,e){let r=t.length-1>=0?t[t.length-1]:null;return r&&r.mode===e.mode?(t[t.length-1].data+=e.data,t):(t.push(e),t)},[])}function gn(n){let t=[];for(let e=0;e<n.length;e++){let r=n[e];switch(r.mode){case f.NUMERIC:t.push([r,{data:r.data,mode:f.ALPHANUMERIC,length:r.length},{data:r.data,mode:f.BYTE,length:r.length}]);break;case f.ALPHANUMERIC:t.push([r,{data:r.data,mode:f.BYTE,length:r.length}]);break;case f.KANJI:t.push([r,{data:r.data,mode:f.BYTE,length:we(r.data)}]);break;case f.BYTE:t.push([{data:r.data,mode:f.BYTE,length:we(r.data)}])}}return t}function dn(n,t){let e={},r={start:{}},o=["start"];for(let i=0;i<n.length;i++){let s=n[i],u=[];for(let c=0;c<s.length;c++){let l=s[c],a=""+i+c;u.push(a),e[a]={node:l,lastCount:0},r[a]={};for(let w=0;w<o.length;w++){let h=o[w];e[h]&&e[h].node.mode===l.mode?(r[h][a]=Et(e[h].lastCount+l.length,l.mode)-Et(e[h].lastCount,l.mode),e[h].lastCount+=l.length):(e[h]&&(e[h].lastCount=l.length),r[h][a]=Et(l.length,l.mode)+4+f.getCharCountIndicator(l.mode,t))}}o=u}for(let i=0;i<o.length;i++)r[o[i]].end=0;return{map:r,table:e}}function me(n,t){let e,r=f.getBestModeForData(n);if(e=f.from(t,r),e!==f.BYTE&&e.bit<r.bit)throw new Error('"'+n+'" cannot be encoded with mode '+f.toString(e)+`.
+ Suggested mode is: `+f.toString(r));switch(e===f.KANJI&&!v.isKanjiModeEnabled()&&(e=f.BYTE),e){case f.NUMERIC:return new ye(n);case f.ALPHANUMERIC:return new Ee(n);case f.KANJI:return new Be(n);case f.BYTE:return new Ce(n)}}F.fromArray=function(t){return t.reduce(function(e,r){return typeof r=="string"?e.push(me(r,null)):r.data&&e.push(me(r.data,r.mode)),e},[])};F.fromString=function(t,e){let r=Ae(t,v.isKanjiModeEnabled()),o=gn(r),i=dn(o,e),s=an.find_path(i.map,"start","end"),u=[];for(let c=1;c<s.length-1;c++)u.push(i.table[s[c]].node);return F.fromArray(fn(u))};F.rawSplit=function(t){return F.fromArray(Ae(t,v.isKanjiModeEnabled()))}});var Ne=g(Ie=>{var et=I(),Ct=j(),hn=Ft(),pn=zt(),wn=Vt(),mn=Jt(),Tt=Yt(),It=lt(),yn=$t(),tt=ne(),En=se(),Cn=M(),Bt=Te();function Bn(n,t){let e=n.size,r=mn.getPositions(t);for(let o=0;o<r.length;o++){let i=r[o][0],s=r[o][1];for(let u=-1;u<=7;u++)if(!(i+u<=-1||e<=i+u))for(let c=-1;c<=7;c++)s+c<=-1||e<=s+c||(u>=0&&u<=6&&(c===0||c===6)||c>=0&&c<=6&&(u===0||u===6)||u>=2&&u<=4&&c>=2&&c<=4?n.set(i+u,s+c,!0,!0):n.set(i+u,s+c,!1,!0))}}function An(n){let t=n.size;for(let e=8;e<t-8;e++){let r=e%2===0;n.set(e,6,r,!0),n.set(6,e,r,!0)}}function Tn(n,t){let e=wn.getPositions(t);for(let r=0;r<e.length;r++){let o=e[r][0],i=e[r][1];for(let s=-2;s<=2;s++)for(let u=-2;u<=2;u++)s===-2||s===2||u===-2||u===2||s===0&&u===0?n.set(o+s,i+u,!0,!0):n.set(o+s,i+u,!1,!0)}}function In(n,t){let e=n.size,r=tt.getEncodedBits(t),o,i,s;for(let u=0;u<18;u++)o=Math.floor(u/3),i=u%3+e-8-3,s=(r>>u&1)===1,n.set(o,i,s,!0),n.set(i,o,s,!0)}function At(n,t,e){let r=n.size,o=En.getEncodedBits(t,e),i,s;for(i=0;i<15;i++)s=(o>>i&1)===1,i<6?n.set(i,8,s,!0):i<8?n.set(i+1,8,s,!0):n.set(r-15+i,8,s,!0),i<8?n.set(8,r-i-1,s,!0):i<9?n.set(8,15-i-1+1,s,!0):n.set(8,15-i-1,s,!0);n.set(r-8,8,1,!0)}function Nn(n,t){let e=n.size,r=-1,o=e-1,i=7,s=0;for(let u=e-1;u>0;u-=2)for(u===6&&u--;;){for(let c=0;c<2;c++)if(!n.isReserved(o,u-c)){let l=!1;s<t.length&&(l=(t[s]>>>i&1)===1),n.set(o,u-c,l),i--,i===-1&&(s++,i=7)}if(o+=r,o<0||e<=o){o-=r,r=-r;break}}}function Mn(n,t,e){let r=new hn;e.forEach(function(c){r.put(c.mode.bit,4),r.put(c.getLength(),Cn.getCharCountIndicator(c.mode,n)),c.write(r)});let o=et.getSymbolTotalCodewords(n),i=It.getTotalCodewordsCount(n,t),s=(o-i)*8;for(r.getLengthInBits()+4<=s&&r.put(0,4);r.getLengthInBits()%8!==0;)r.putBit(0);let u=(s-r.getLengthInBits())/8;for(let c=0;c<u;c++)r.put(c%2?17:236,8);return Sn(r,n,t)}function Sn(n,t,e){let r=et.getSymbolTotalCodewords(t),o=It.getTotalCodewordsCount(t,e),i=r-o,s=It.getBlocksCount(t,e),u=r%s,c=s-u,l=Math.floor(r/s),a=Math.floor(i/s),w=a+1,h=l-a,y=new yn(h),A=0,T=new Array(s),Rt=new Array(s),ot=0,_e=new Uint8Array(n.buffer);for(let x=0;x<s;x++){let st=x<c?a:w;T[x]=_e.slice(A,A+st),Rt[x]=y.encode(T[x]),A+=st,ot=Math.max(ot,st)}let it=new Uint8Array(r),Lt=0,E,C;for(E=0;E<ot;E++)for(C=0;C<s;C++)E<T[C].length&&(it[Lt++]=T[C][E]);for(E=0;E<h;E++)for(C=0;C<s;C++)it[Lt++]=Rt[C][E];return it}function Pn(n,t,e,r){let o;if(Array.isArray(n))o=Bt.fromArray(n);else if(typeof n=="string"){let l=t;if(!l){let a=Bt.rawSplit(n);l=tt.getBestVersionForData(a,e)}o=Bt.fromString(n,l||40)}else throw new Error("Invalid data");let i=tt.getBestVersionForData(o,e);if(!i)throw new Error("The amount of data is too big to be stored in a QR Code");if(!t)t=i;else if(t<i)throw new Error(`
+The chosen QR Code version cannot contain this amount of data.
+Minimum version required to store current data is: `+i+`.
+`);let s=Mn(t,e,o),u=et.getSymbolSize(t),c=new pn(u);return Bn(c,t),An(c),Tn(c,t),At(c,e,0),t>=7&&In(c,t),Nn(c,s),isNaN(r)&&(r=Tt.getBestMask(c,At.bind(null,c,e))),Tt.applyMask(r,c),At(c,e,r),{modules:c,version:t,errorCorrectionLevel:e,maskPattern:r,segments:o}}Ie.create=function(t,e){if(typeof t>"u"||t==="")throw new Error("No input text");let r=Ct.M,o,i;return typeof e<"u"&&(r=Ct.from(e.errorCorrectionLevel,Ct.M),o=tt.from(e.version),i=Tt.from(e.maskPattern),e.toSJISFunc&&et.setToSJISFunction(e.toSJISFunc)),Pn(t,o,r,i)}});var Nt=g(L=>{function Me(n){if(typeof n=="number"&&(n=n.toString()),typeof n!="string")throw new Error("Color should be defined as hex string");let t=n.slice().replace("#","").split("");if(t.length<3||t.length===5||t.length>8)throw new Error("Invalid hex color: "+n);(t.length===3||t.length===4)&&(t=Array.prototype.concat.apply([],t.map(function(r){return[r,r]}))),t.length===6&&t.push("F","F");let e=parseInt(t.join(""),16);return{r:e>>24&255,g:e>>16&255,b:e>>8&255,a:e&255,hex:"#"+t.slice(0,6).join("")}}L.getOptions=function(t){t||(t={}),t.color||(t.color={});let e=typeof t.margin>"u"||t.margin===null||t.margin<0?4:t.margin,r=t.width&&t.width>=21?t.width:void 0,o=t.scale||4;return{width:r,scale:r?4:o,margin:e,color:{dark:Me(t.color.dark||"#000000ff"),light:Me(t.color.light||"#ffffffff")},type:t.type,rendererOpts:t.rendererOpts||{}}};L.getScale=function(t,e){return e.width&&e.width>=t+e.margin*2?e.width/(t+e.margin*2):e.scale};L.getImageWidth=function(t,e){let r=L.getScale(t,e);return Math.floor((t+e.margin*2)*r)};L.qrToImageData=function(t,e,r){let o=e.modules.size,i=e.modules.data,s=L.getScale(o,r),u=Math.floor((o+r.margin*2)*s),c=r.margin*s,l=[r.color.light,r.color.dark];for(let a=0;a<u;a++)for(let w=0;w<u;w++){let h=(a*u+w)*4,y=r.color.light;if(a>=c&&w>=c&&a<u-c&&w<u-c){let A=Math.floor((a-c)/s),T=Math.floor((w-c)/s);y=l[i[A*o+T]?1:0]}t[h++]=y.r,t[h++]=y.g,t[h++]=y.b,t[h]=y.a}}});var Se=g(nt=>{var Mt=Nt();function bn(n,t,e){n.clearRect(0,0,t.width,t.height),t.style||(t.style={}),t.height=e,t.width=e,t.style.height=e+"px",t.style.width=e+"px"}function Rn(){try{return document.createElement("canvas")}catch{throw new Error("You need to specify a canvas element")}}nt.render=function(t,e,r){let o=r,i=e;typeof o>"u"&&(!e||!e.getContext)&&(o=e,e=void 0),e||(i=Rn()),o=Mt.getOptions(o);let s=Mt.getImageWidth(t.modules.size,o),u=i.getContext("2d"),c=u.createImageData(s,s);return Mt.qrToImageData(c.data,t,o),bn(u,i,s),u.putImageData(c,0,0),i};nt.renderToDataURL=function(t,e,r){let o=r;typeof o>"u"&&(!e||!e.getContext)&&(o=e,e=void 0),o||(o={});let i=nt.render(t,e,o),s=o.type||"image/png",u=o.rendererOpts||{};return i.toDataURL(s,u.quality)}});var Re=g(be=>{var Ln=Nt();function Pe(n,t){let e=n.a/255,r=t+'="'+n.hex+'"';return e<1?r+" "+t+'-opacity="'+e.toFixed(2).slice(1)+'"':r}function St(n,t,e){let r=n+t;return typeof e<"u"&&(r+=" "+e),r}function xn(n,t,e){let r="",o=0,i=!1,s=0;for(let u=0;u<n.length;u++){let c=Math.floor(u%t),l=Math.floor(u/t);!c&&!i&&(i=!0),n[u]?(s++,u>0&&c>0&&n[u-1]||(r+=i?St("M",c+e,.5+l+e):St("m",o,0),o=0,i=!1),c+1<t&&n[u+1]||(r+=St("h",s),s=0)):o++}return r}be.render=function(t,e,r){let o=Ln.getOptions(e),i=t.modules.size,s=t.modules.data,u=i+o.margin*2,c=o.color.light.a?"<path "+Pe(o.color.light,"fill")+' d="M0 0h'+u+"v"+u+'H0z"/>':"",l="<path "+Pe(o.color.dark,"stroke")+' d="'+xn(s,i,o.margin)+'"/>',a='viewBox="0 0 '+u+" "+u+'"',h='<svg xmlns="http://www.w3.org/2000/svg" '+(o.width?'width="'+o.width+'" height="'+o.width+'" ':"")+a+' shape-rendering="crispEdges">'+c+l+`</svg>
+`;return typeof r=="function"&&r(null,h),h}});var xe=g(O=>{var _n=Ut(),Pt=Ne(),Le=Se(),Un=Re();function bt(n,t,e,r,o){let i=[].slice.call(arguments,1),s=i.length,u=typeof i[s-1]=="function";if(!u&&!_n())throw new Error("Callback required as last argument");if(u){if(s<2)throw new Error("Too few arguments provided");s===2?(o=e,e=t,t=r=void 0):s===3&&(t.getContext&&typeof o>"u"?(o=r,r=void 0):(o=r,r=e,e=t,t=void 0))}else{if(s<1)throw new Error("Too few arguments provided");return s===1?(e=t,t=r=void 0):s===2&&!t.getContext&&(r=e,e=t,t=void 0),new Promise(function(c,l){try{let a=Pt.create(e,r);c(n(a,t,r))}catch(a){l(a)}})}try{let c=Pt.create(e,r);o(null,n(c,t,r))}catch(c){o(c)}}O.create=Pt.create;O.toCanvas=bt.bind(null,Le.render);O.toDataURL=bt.bind(null,Le.renderToDataURL);O.toString=bt.bind(null,function(n,t,e){return Un.render(n,e)})});var rt=Ve(xe()),{create:ar,toCanvas:fr,toDataURL:gr,toString:dr}=rt,hr=rt.default??rt;export{ar as create,hr as default,fr as toCanvas,gr as toDataURL,dr as toString};
+//# sourceMappingURL=qrcode.bundle.mjs.map
\ No newline at end of file
diff --git a/web/vendor/qr/qrcode.js b/web/vendor/qr/qrcode.js
new file mode 100644
index 0000000..b07c9ab
--- /dev/null
+++ b/web/vendor/qr/qrcode.js
@@ -0,0 +1,3 @@
+/* esm.sh - qrcode@1.5.4 */
+export * from "/qrcode@1.5.4/es2022/qrcode.bundle.mjs";
+export { default } from "/qrcode@1.5.4/es2022/qrcode.bundle.mjs";
diff --git a/web/vendor/three/GLTFLoader.js b/web/vendor/three/GLTFLoader.js
new file mode 100644
index 0000000..3cb312c
--- /dev/null
+++ b/web/vendor/three/GLTFLoader.js
@@ -0,0 +1,4730 @@
+import {
+	AnimationClip,
+	Bone,
+	Box3,
+	BufferAttribute,
+	BufferGeometry,
+	ClampToEdgeWrapping,
+	Color,
+	ColorManagement,
+	DirectionalLight,
+	DoubleSide,
+	FileLoader,
+	FrontSide,
+	Group,
+	ImageBitmapLoader,
+	InstancedMesh,
+	InterleavedBuffer,
+	InterleavedBufferAttribute,
+	Interpolant,
+	InterpolateDiscrete,
+	InterpolateLinear,
+	Line,
+	LineBasicMaterial,
+	LineLoop,
+	LineSegments,
+	LinearFilter,
+	LinearMipmapLinearFilter,
+	LinearMipmapNearestFilter,
+	LinearSRGBColorSpace,
+	Loader,
+	LoaderUtils,
+	Material,
+	MathUtils,
+	Matrix4,
+	Mesh,
+	MeshBasicMaterial,
+	MeshPhysicalMaterial,
+	MeshStandardMaterial,
+	MirroredRepeatWrapping,
+	NearestFilter,
+	NearestMipmapLinearFilter,
+	NearestMipmapNearestFilter,
+	NumberKeyframeTrack,
+	Object3D,
+	OrthographicCamera,
+	PerspectiveCamera,
+	PointLight,
+	Points,
+	PointsMaterial,
+	PropertyBinding,
+	Quaternion,
+	QuaternionKeyframeTrack,
+	RepeatWrapping,
+	Skeleton,
+	SkinnedMesh,
+	Sphere,
+	SpotLight,
+	Texture,
+	TextureLoader,
+	TriangleFanDrawMode,
+	TriangleStripDrawMode,
+	Vector2,
+	Vector3,
+	VectorKeyframeTrack,
+	SRGBColorSpace,
+	InstancedBufferAttribute
+} from './three.module.js';
+import { toTrianglesDrawMode } from '../utils/BufferGeometryUtils.js';
+
+class GLTFLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+		this.dracoLoader = null;
+		this.ktx2Loader = null;
+		this.meshoptDecoder = null;
+
+		this.pluginCallbacks = [];
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsClearcoatExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsDispersionExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFTextureBasisUExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFTextureWebPExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFTextureAVIFExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsSheenExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsTransmissionExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsVolumeExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsIorExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsEmissiveStrengthExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsSpecularExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsIridescenceExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsAnisotropyExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMaterialsBumpExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFLightsExtension( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMeshoptCompression( parser );
+
+		} );
+
+		this.register( function ( parser ) {
+
+			return new GLTFMeshGpuInstancing( parser );
+
+		} );
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		const scope = this;
+
+		let resourcePath;
+
+		if ( this.resourcePath !== '' ) {
+
+			resourcePath = this.resourcePath;
+
+		} else if ( this.path !== '' ) {
+
+			// If a base path is set, resources will be relative paths from that plus the relative path of the gltf file
+			// Example  path = 'https://my-cnd-server.com/', url = 'assets/models/model.gltf'
+			// resourcePath = 'https://my-cnd-server.com/assets/models/'
+			// referenced resource 'model.bin' will be loaded from 'https://my-cnd-server.com/assets/models/model.bin'
+			// referenced resource '../textures/texture.png' will be loaded from 'https://my-cnd-server.com/assets/textures/texture.png'
+			const relativeUrl = LoaderUtils.extractUrlBase( url );
+			resourcePath = LoaderUtils.resolveURL( relativeUrl, this.path );
+
+		} else {
+
+			resourcePath = LoaderUtils.extractUrlBase( url );
+
+		}
+
+		// Tells the LoadingManager to track an extra item, which resolves after
+		// the model is fully loaded. This means the count of items loaded will
+		// be incorrect, but ensures manager.onLoad() does not fire early.
+		this.manager.itemStart( url );
+
+		const _onError = function ( e ) {
+
+			if ( onError ) {
+
+				onError( e );
+
+			} else {
+
+				console.error( e );
+
+			}
+
+			scope.manager.itemError( url );
+			scope.manager.itemEnd( url );
+
+		};
+
+		const loader = new FileLoader( this.manager );
+
+		loader.setPath( this.path );
+		loader.setResponseType( 'arraybuffer' );
+		loader.setRequestHeader( this.requestHeader );
+		loader.setWithCredentials( this.withCredentials );
+
+		loader.load( url, function ( data ) {
+
+			try {
+
+				scope.parse( data, resourcePath, function ( gltf ) {
+
+					onLoad( gltf );
+
+					scope.manager.itemEnd( url );
+
+				}, _onError );
+
+			} catch ( e ) {
+
+				_onError( e );
+
+			}
+
+		}, onProgress, _onError );
+
+	}
+
+	setDRACOLoader( dracoLoader ) {
+
+		this.dracoLoader = dracoLoader;
+		return this;
+
+	}
+
+	setDDSLoader() {
+
+		throw new Error(
+
+			'THREE.GLTFLoader: "MSFT_texture_dds" no longer supported. Please update to "KHR_texture_basisu".'
+
+		);
+
+	}
+
+	setKTX2Loader( ktx2Loader ) {
+
+		this.ktx2Loader = ktx2Loader;
+		return this;
+
+	}
+
+	setMeshoptDecoder( meshoptDecoder ) {
+
+		this.meshoptDecoder = meshoptDecoder;
+		return this;
+
+	}
+
+	register( callback ) {
+
+		if ( this.pluginCallbacks.indexOf( callback ) === - 1 ) {
+
+			this.pluginCallbacks.push( callback );
+
+		}
+
+		return this;
+
+	}
+
+	unregister( callback ) {
+
+		if ( this.pluginCallbacks.indexOf( callback ) !== - 1 ) {
+
+			this.pluginCallbacks.splice( this.pluginCallbacks.indexOf( callback ), 1 );
+
+		}
+
+		return this;
+
+	}
+
+	parse( data, path, onLoad, onError ) {
+
+		let json;
+		const extensions = {};
+		const plugins = {};
+		const textDecoder = new TextDecoder();
+
+		if ( typeof data === 'string' ) {
+
+			json = JSON.parse( data );
+
+		} else if ( data instanceof ArrayBuffer ) {
+
+			const magic = textDecoder.decode( new Uint8Array( data, 0, 4 ) );
+
+			if ( magic === BINARY_EXTENSION_HEADER_MAGIC ) {
+
+				try {
+
+					extensions[ EXTENSIONS.KHR_BINARY_GLTF ] = new GLTFBinaryExtension( data );
+
+				} catch ( error ) {
+
+					if ( onError ) onError( error );
+					return;
+
+				}
+
+				json = JSON.parse( extensions[ EXTENSIONS.KHR_BINARY_GLTF ].content );
+
+			} else {
+
+				json = JSON.parse( textDecoder.decode( data ) );
+
+			}
+
+		} else {
+
+			json = data;
+
+		}
+
+		if ( json.asset === undefined || json.asset.version[ 0 ] < 2 ) {
+
+			if ( onError ) onError( new Error( 'THREE.GLTFLoader: Unsupported asset. glTF versions >=2.0 are supported.' ) );
+			return;
+
+		}
+
+		const parser = new GLTFParser( json, {
+
+			path: path || this.resourcePath || '',
+			crossOrigin: this.crossOrigin,
+			requestHeader: this.requestHeader,
+			manager: this.manager,
+			ktx2Loader: this.ktx2Loader,
+			meshoptDecoder: this.meshoptDecoder
+
+		} );
+
+		parser.fileLoader.setRequestHeader( this.requestHeader );
+
+		for ( let i = 0; i < this.pluginCallbacks.length; i ++ ) {
+
+			const plugin = this.pluginCallbacks[ i ]( parser );
+
+			if ( ! plugin.name ) console.error( 'THREE.GLTFLoader: Invalid plugin found: missing name' );
+
+			plugins[ plugin.name ] = plugin;
+
+			// Workaround to avoid determining as unknown extension
+			// in addUnknownExtensionsToUserData().
+			// Remove this workaround if we move all the existing
+			// extension handlers to plugin system
+			extensions[ plugin.name ] = true;
+
+		}
+
+		if ( json.extensionsUsed ) {
+
+			for ( let i = 0; i < json.extensionsUsed.length; ++ i ) {
+
+				const extensionName = json.extensionsUsed[ i ];
+				const extensionsRequired = json.extensionsRequired || [];
+
+				switch ( extensionName ) {
+
+					case EXTENSIONS.KHR_MATERIALS_UNLIT:
+						extensions[ extensionName ] = new GLTFMaterialsUnlitExtension();
+						break;
+
+					case EXTENSIONS.KHR_DRACO_MESH_COMPRESSION:
+						extensions[ extensionName ] = new GLTFDracoMeshCompressionExtension( json, this.dracoLoader );
+						break;
+
+					case EXTENSIONS.KHR_TEXTURE_TRANSFORM:
+						extensions[ extensionName ] = new GLTFTextureTransformExtension();
+						break;
+
+					case EXTENSIONS.KHR_MESH_QUANTIZATION:
+						extensions[ extensionName ] = new GLTFMeshQuantizationExtension();
+						break;
+
+					default:
+
+						if ( extensionsRequired.indexOf( extensionName ) >= 0 && plugins[ extensionName ] === undefined ) {
+
+							console.warn( 'THREE.GLTFLoader: Unknown extension "' + extensionName + '".' );
+
+						}
+
+				}
+
+			}
+
+		}
+
+		parser.setExtensions( extensions );
+		parser.setPlugins( plugins );
+		parser.parse( onLoad, onError );
+
+	}
+
+	parseAsync( data, path ) {
+
+		const scope = this;
+
+		return new Promise( function ( resolve, reject ) {
+
+			scope.parse( data, path, resolve, reject );
+
+		} );
+
+	}
+
+}
+
+/* GLTFREGISTRY */
+
+function GLTFRegistry() {
+
+	let objects = {};
+
+	return	{
+
+		get: function ( key ) {
+
+			return objects[ key ];
+
+		},
+
+		add: function ( key, object ) {
+
+			objects[ key ] = object;
+
+		},
+
+		remove: function ( key ) {
+
+			delete objects[ key ];
+
+		},
+
+		removeAll: function () {
+
+			objects = {};
+
+		}
+
+	};
+
+}
+
+/*********************************/
+/********** EXTENSIONS ***********/
+/*********************************/
+
+const EXTENSIONS = {
+	KHR_BINARY_GLTF: 'KHR_binary_glTF',
+	KHR_DRACO_MESH_COMPRESSION: 'KHR_draco_mesh_compression',
+	KHR_LIGHTS_PUNCTUAL: 'KHR_lights_punctual',
+	KHR_MATERIALS_CLEARCOAT: 'KHR_materials_clearcoat',
+	KHR_MATERIALS_DISPERSION: 'KHR_materials_dispersion',
+	KHR_MATERIALS_IOR: 'KHR_materials_ior',
+	KHR_MATERIALS_SHEEN: 'KHR_materials_sheen',
+	KHR_MATERIALS_SPECULAR: 'KHR_materials_specular',
+	KHR_MATERIALS_TRANSMISSION: 'KHR_materials_transmission',
+	KHR_MATERIALS_IRIDESCENCE: 'KHR_materials_iridescence',
+	KHR_MATERIALS_ANISOTROPY: 'KHR_materials_anisotropy',
+	KHR_MATERIALS_UNLIT: 'KHR_materials_unlit',
+	KHR_MATERIALS_VOLUME: 'KHR_materials_volume',
+	KHR_TEXTURE_BASISU: 'KHR_texture_basisu',
+	KHR_TEXTURE_TRANSFORM: 'KHR_texture_transform',
+	KHR_MESH_QUANTIZATION: 'KHR_mesh_quantization',
+	KHR_MATERIALS_EMISSIVE_STRENGTH: 'KHR_materials_emissive_strength',
+	EXT_MATERIALS_BUMP: 'EXT_materials_bump',
+	EXT_TEXTURE_WEBP: 'EXT_texture_webp',
+	EXT_TEXTURE_AVIF: 'EXT_texture_avif',
+	EXT_MESHOPT_COMPRESSION: 'EXT_meshopt_compression',
+	EXT_MESH_GPU_INSTANCING: 'EXT_mesh_gpu_instancing'
+};
+
+/**
+ * Punctual Lights Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_lights_punctual
+ */
+class GLTFLightsExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_LIGHTS_PUNCTUAL;
+
+		// Object3D instance caches
+		this.cache = { refs: {}, uses: {} };
+
+	}
+
+	_markDefs() {
+
+		const parser = this.parser;
+		const nodeDefs = this.parser.json.nodes || [];
+
+		for ( let nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {
+
+			const nodeDef = nodeDefs[ nodeIndex ];
+
+			if ( nodeDef.extensions
+					&& nodeDef.extensions[ this.name ]
+					&& nodeDef.extensions[ this.name ].light !== undefined ) {
+
+				parser._addNodeRef( this.cache, nodeDef.extensions[ this.name ].light );
+
+			}
+
+		}
+
+	}
+
+	_loadLight( lightIndex ) {
+
+		const parser = this.parser;
+		const cacheKey = 'light:' + lightIndex;
+		let dependency = parser.cache.get( cacheKey );
+
+		if ( dependency ) return dependency;
+
+		const json = parser.json;
+		const extensions = ( json.extensions && json.extensions[ this.name ] ) || {};
+		const lightDefs = extensions.lights || [];
+		const lightDef = lightDefs[ lightIndex ];
+		let lightNode;
+
+		const color = new Color( 0xffffff );
+
+		if ( lightDef.color !== undefined ) color.setRGB( lightDef.color[ 0 ], lightDef.color[ 1 ], lightDef.color[ 2 ], LinearSRGBColorSpace );
+
+		const range = lightDef.range !== undefined ? lightDef.range : 0;
+
+		switch ( lightDef.type ) {
+
+			case 'directional':
+				lightNode = new DirectionalLight( color );
+				lightNode.target.position.set( 0, 0, - 1 );
+				lightNode.add( lightNode.target );
+				break;
+
+			case 'point':
+				lightNode = new PointLight( color );
+				lightNode.distance = range;
+				break;
+
+			case 'spot':
+				lightNode = new SpotLight( color );
+				lightNode.distance = range;
+				// Handle spotlight properties.
+				lightDef.spot = lightDef.spot || {};
+				lightDef.spot.innerConeAngle = lightDef.spot.innerConeAngle !== undefined ? lightDef.spot.innerConeAngle : 0;
+				lightDef.spot.outerConeAngle = lightDef.spot.outerConeAngle !== undefined ? lightDef.spot.outerConeAngle : Math.PI / 4.0;
+				lightNode.angle = lightDef.spot.outerConeAngle;
+				lightNode.penumbra = 1.0 - lightDef.spot.innerConeAngle / lightDef.spot.outerConeAngle;
+				lightNode.target.position.set( 0, 0, - 1 );
+				lightNode.add( lightNode.target );
+				break;
+
+			default:
+				throw new Error( 'THREE.GLTFLoader: Unexpected light type: ' + lightDef.type );
+
+		}
+
+		// Some lights (e.g. spot) default to a position other than the origin. Reset the position
+		// here, because node-level parsing will only override position if explicitly specified.
+		lightNode.position.set( 0, 0, 0 );
+
+		lightNode.decay = 2;
+
+		assignExtrasToUserData( lightNode, lightDef );
+
+		if ( lightDef.intensity !== undefined ) lightNode.intensity = lightDef.intensity;
+
+		lightNode.name = parser.createUniqueName( lightDef.name || ( 'light_' + lightIndex ) );
+
+		dependency = Promise.resolve( lightNode );
+
+		parser.cache.add( cacheKey, dependency );
+
+		return dependency;
+
+	}
+
+	getDependency( type, index ) {
+
+		if ( type !== 'light' ) return;
+
+		return this._loadLight( index );
+
+	}
+
+	createNodeAttachment( nodeIndex ) {
+
+		const self = this;
+		const parser = this.parser;
+		const json = parser.json;
+		const nodeDef = json.nodes[ nodeIndex ];
+		const lightDef = ( nodeDef.extensions && nodeDef.extensions[ this.name ] ) || {};
+		const lightIndex = lightDef.light;
+
+		if ( lightIndex === undefined ) return null;
+
+		return this._loadLight( lightIndex ).then( function ( light ) {
+
+			return parser._getNodeRef( self.cache, lightIndex, light );
+
+		} );
+
+	}
+
+}
+
+/**
+ * Unlit Materials Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_unlit
+ */
+class GLTFMaterialsUnlitExtension {
+
+	constructor() {
+
+		this.name = EXTENSIONS.KHR_MATERIALS_UNLIT;
+
+	}
+
+	getMaterialType() {
+
+		return MeshBasicMaterial;
+
+	}
+
+	extendParams( materialParams, materialDef, parser ) {
+
+		const pending = [];
+
+		materialParams.color = new Color( 1.0, 1.0, 1.0 );
+		materialParams.opacity = 1.0;
+
+		const metallicRoughness = materialDef.pbrMetallicRoughness;
+
+		if ( metallicRoughness ) {
+
+			if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
+
+				const array = metallicRoughness.baseColorFactor;
+
+				materialParams.color.setRGB( array[ 0 ], array[ 1 ], array[ 2 ], LinearSRGBColorSpace );
+				materialParams.opacity = array[ 3 ];
+
+			}
+
+			if ( metallicRoughness.baseColorTexture !== undefined ) {
+
+				pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture, SRGBColorSpace ) );
+
+			}
+
+		}
+
+		return Promise.all( pending );
+
+	}
+
+}
+
+/**
+ * Materials Emissive Strength Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/blob/5768b3ce0ef32bc39cdf1bef10b948586635ead3/extensions/2.0/Khronos/KHR_materials_emissive_strength/README.md
+ */
+class GLTFMaterialsEmissiveStrengthExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_MATERIALS_EMISSIVE_STRENGTH;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const emissiveStrength = materialDef.extensions[ this.name ].emissiveStrength;
+
+		if ( emissiveStrength !== undefined ) {
+
+			materialParams.emissiveIntensity = emissiveStrength;
+
+		}
+
+		return Promise.resolve();
+
+	}
+
+}
+
+/**
+ * Clearcoat Materials Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_clearcoat
+ */
+class GLTFMaterialsClearcoatExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_MATERIALS_CLEARCOAT;
+
+	}
+
+	getMaterialType( materialIndex ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
+
+		return MeshPhysicalMaterial;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const pending = [];
+
+		const extension = materialDef.extensions[ this.name ];
+
+		if ( extension.clearcoatFactor !== undefined ) {
+
+			materialParams.clearcoat = extension.clearcoatFactor;
+
+		}
+
+		if ( extension.clearcoatTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'clearcoatMap', extension.clearcoatTexture ) );
+
+		}
+
+		if ( extension.clearcoatRoughnessFactor !== undefined ) {
+
+			materialParams.clearcoatRoughness = extension.clearcoatRoughnessFactor;
+
+		}
+
+		if ( extension.clearcoatRoughnessTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'clearcoatRoughnessMap', extension.clearcoatRoughnessTexture ) );
+
+		}
+
+		if ( extension.clearcoatNormalTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'clearcoatNormalMap', extension.clearcoatNormalTexture ) );
+
+			if ( extension.clearcoatNormalTexture.scale !== undefined ) {
+
+				const scale = extension.clearcoatNormalTexture.scale;
+
+				materialParams.clearcoatNormalScale = new Vector2( scale, scale );
+
+			}
+
+		}
+
+		return Promise.all( pending );
+
+	}
+
+}
+
+/**
+ * Materials dispersion Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_materials_dispersion
+ */
+class GLTFMaterialsDispersionExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_MATERIALS_DISPERSION;
+
+	}
+
+	getMaterialType( materialIndex ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
+
+		return MeshPhysicalMaterial;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const extension = materialDef.extensions[ this.name ];
+
+		materialParams.dispersion = extension.dispersion !== undefined ? extension.dispersion : 0;
+
+		return Promise.resolve();
+
+	}
+
+}
+
+/**
+ * Iridescence Materials Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_iridescence
+ */
+class GLTFMaterialsIridescenceExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_MATERIALS_IRIDESCENCE;
+
+	}
+
+	getMaterialType( materialIndex ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
+
+		return MeshPhysicalMaterial;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const pending = [];
+
+		const extension = materialDef.extensions[ this.name ];
+
+		if ( extension.iridescenceFactor !== undefined ) {
+
+			materialParams.iridescence = extension.iridescenceFactor;
+
+		}
+
+		if ( extension.iridescenceTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'iridescenceMap', extension.iridescenceTexture ) );
+
+		}
+
+		if ( extension.iridescenceIor !== undefined ) {
+
+			materialParams.iridescenceIOR = extension.iridescenceIor;
+
+		}
+
+		if ( materialParams.iridescenceThicknessRange === undefined ) {
+
+			materialParams.iridescenceThicknessRange = [ 100, 400 ];
+
+		}
+
+		if ( extension.iridescenceThicknessMinimum !== undefined ) {
+
+			materialParams.iridescenceThicknessRange[ 0 ] = extension.iridescenceThicknessMinimum;
+
+		}
+
+		if ( extension.iridescenceThicknessMaximum !== undefined ) {
+
+			materialParams.iridescenceThicknessRange[ 1 ] = extension.iridescenceThicknessMaximum;
+
+		}
+
+		if ( extension.iridescenceThicknessTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'iridescenceThicknessMap', extension.iridescenceThicknessTexture ) );
+
+		}
+
+		return Promise.all( pending );
+
+	}
+
+}
+
+/**
+ * Sheen Materials Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/main/extensions/2.0/Khronos/KHR_materials_sheen
+ */
+class GLTFMaterialsSheenExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_MATERIALS_SHEEN;
+
+	}
+
+	getMaterialType( materialIndex ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
+
+		return MeshPhysicalMaterial;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const pending = [];
+
+		materialParams.sheenColor = new Color( 0, 0, 0 );
+		materialParams.sheenRoughness = 0;
+		materialParams.sheen = 1;
+
+		const extension = materialDef.extensions[ this.name ];
+
+		if ( extension.sheenColorFactor !== undefined ) {
+
+			const colorFactor = extension.sheenColorFactor;
+			materialParams.sheenColor.setRGB( colorFactor[ 0 ], colorFactor[ 1 ], colorFactor[ 2 ], LinearSRGBColorSpace );
+
+		}
+
+		if ( extension.sheenRoughnessFactor !== undefined ) {
+
+			materialParams.sheenRoughness = extension.sheenRoughnessFactor;
+
+		}
+
+		if ( extension.sheenColorTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'sheenColorMap', extension.sheenColorTexture, SRGBColorSpace ) );
+
+		}
+
+		if ( extension.sheenRoughnessTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'sheenRoughnessMap', extension.sheenRoughnessTexture ) );
+
+		}
+
+		return Promise.all( pending );
+
+	}
+
+}
+
+/**
+ * Transmission Materials Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_transmission
+ * Draft: https://github.com/KhronosGroup/glTF/pull/1698
+ */
+class GLTFMaterialsTransmissionExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_MATERIALS_TRANSMISSION;
+
+	}
+
+	getMaterialType( materialIndex ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
+
+		return MeshPhysicalMaterial;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const pending = [];
+
+		const extension = materialDef.extensions[ this.name ];
+
+		if ( extension.transmissionFactor !== undefined ) {
+
+			materialParams.transmission = extension.transmissionFactor;
+
+		}
+
+		if ( extension.transmissionTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'transmissionMap', extension.transmissionTexture ) );
+
+		}
+
+		return Promise.all( pending );
+
+	}
+
+}
+
+/**
+ * Materials Volume Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_volume
+ */
+class GLTFMaterialsVolumeExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_MATERIALS_VOLUME;
+
+	}
+
+	getMaterialType( materialIndex ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
+
+		return MeshPhysicalMaterial;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const pending = [];
+
+		const extension = materialDef.extensions[ this.name ];
+
+		materialParams.thickness = extension.thicknessFactor !== undefined ? extension.thicknessFactor : 0;
+
+		if ( extension.thicknessTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'thicknessMap', extension.thicknessTexture ) );
+
+		}
+
+		materialParams.attenuationDistance = extension.attenuationDistance || Infinity;
+
+		const colorArray = extension.attenuationColor || [ 1, 1, 1 ];
+		materialParams.attenuationColor = new Color().setRGB( colorArray[ 0 ], colorArray[ 1 ], colorArray[ 2 ], LinearSRGBColorSpace );
+
+		return Promise.all( pending );
+
+	}
+
+}
+
+/**
+ * Materials ior Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_ior
+ */
+class GLTFMaterialsIorExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_MATERIALS_IOR;
+
+	}
+
+	getMaterialType( materialIndex ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
+
+		return MeshPhysicalMaterial;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const extension = materialDef.extensions[ this.name ];
+
+		materialParams.ior = extension.ior !== undefined ? extension.ior : 1.5;
+
+		return Promise.resolve();
+
+	}
+
+}
+
+/**
+ * Materials specular Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_specular
+ */
+class GLTFMaterialsSpecularExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_MATERIALS_SPECULAR;
+
+	}
+
+	getMaterialType( materialIndex ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
+
+		return MeshPhysicalMaterial;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const pending = [];
+
+		const extension = materialDef.extensions[ this.name ];
+
+		materialParams.specularIntensity = extension.specularFactor !== undefined ? extension.specularFactor : 1.0;
+
+		if ( extension.specularTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'specularIntensityMap', extension.specularTexture ) );
+
+		}
+
+		const colorArray = extension.specularColorFactor || [ 1, 1, 1 ];
+		materialParams.specularColor = new Color().setRGB( colorArray[ 0 ], colorArray[ 1 ], colorArray[ 2 ], LinearSRGBColorSpace );
+
+		if ( extension.specularColorTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'specularColorMap', extension.specularColorTexture, SRGBColorSpace ) );
+
+		}
+
+		return Promise.all( pending );
+
+	}
+
+}
+
+
+/**
+ * Materials bump Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/EXT_materials_bump
+ */
+class GLTFMaterialsBumpExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.EXT_MATERIALS_BUMP;
+
+	}
+
+	getMaterialType( materialIndex ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
+
+		return MeshPhysicalMaterial;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const pending = [];
+
+		const extension = materialDef.extensions[ this.name ];
+
+		materialParams.bumpScale = extension.bumpFactor !== undefined ? extension.bumpFactor : 1.0;
+
+		if ( extension.bumpTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'bumpMap', extension.bumpTexture ) );
+
+		}
+
+		return Promise.all( pending );
+
+	}
+
+}
+
+/**
+ * Materials anisotropy Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_anisotropy
+ */
+class GLTFMaterialsAnisotropyExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_MATERIALS_ANISOTROPY;
+
+	}
+
+	getMaterialType( materialIndex ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
+
+		return MeshPhysicalMaterial;
+
+	}
+
+	extendMaterialParams( materialIndex, materialParams ) {
+
+		const parser = this.parser;
+		const materialDef = parser.json.materials[ materialIndex ];
+
+		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
+
+			return Promise.resolve();
+
+		}
+
+		const pending = [];
+
+		const extension = materialDef.extensions[ this.name ];
+
+		if ( extension.anisotropyStrength !== undefined ) {
+
+			materialParams.anisotropy = extension.anisotropyStrength;
+
+		}
+
+		if ( extension.anisotropyRotation !== undefined ) {
+
+			materialParams.anisotropyRotation = extension.anisotropyRotation;
+
+		}
+
+		if ( extension.anisotropyTexture !== undefined ) {
+
+			pending.push( parser.assignTexture( materialParams, 'anisotropyMap', extension.anisotropyTexture ) );
+
+		}
+
+		return Promise.all( pending );
+
+	}
+
+}
+
+/**
+ * BasisU Texture Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_basisu
+ */
+class GLTFTextureBasisUExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.KHR_TEXTURE_BASISU;
+
+	}
+
+	loadTexture( textureIndex ) {
+
+		const parser = this.parser;
+		const json = parser.json;
+
+		const textureDef = json.textures[ textureIndex ];
+
+		if ( ! textureDef.extensions || ! textureDef.extensions[ this.name ] ) {
+
+			return null;
+
+		}
+
+		const extension = textureDef.extensions[ this.name ];
+		const loader = parser.options.ktx2Loader;
+
+		if ( ! loader ) {
+
+			if ( json.extensionsRequired && json.extensionsRequired.indexOf( this.name ) >= 0 ) {
+
+				throw new Error( 'THREE.GLTFLoader: setKTX2Loader must be called before loading KTX2 textures' );
+
+			} else {
+
+				// Assumes that the extension is optional and that a fallback texture is present
+				return null;
+
+			}
+
+		}
+
+		return parser.loadTextureImage( textureIndex, extension.source, loader );
+
+	}
+
+}
+
+/**
+ * WebP Texture Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_texture_webp
+ */
+class GLTFTextureWebPExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.EXT_TEXTURE_WEBP;
+		this.isSupported = null;
+
+	}
+
+	loadTexture( textureIndex ) {
+
+		const name = this.name;
+		const parser = this.parser;
+		const json = parser.json;
+
+		const textureDef = json.textures[ textureIndex ];
+
+		if ( ! textureDef.extensions || ! textureDef.extensions[ name ] ) {
+
+			return null;
+
+		}
+
+		const extension = textureDef.extensions[ name ];
+		const source = json.images[ extension.source ];
+
+		let loader = parser.textureLoader;
+		if ( source.uri ) {
+
+			const handler = parser.options.manager.getHandler( source.uri );
+			if ( handler !== null ) loader = handler;
+
+		}
+
+		return this.detectSupport().then( function ( isSupported ) {
+
+			if ( isSupported ) return parser.loadTextureImage( textureIndex, extension.source, loader );
+
+			if ( json.extensionsRequired && json.extensionsRequired.indexOf( name ) >= 0 ) {
+
+				throw new Error( 'THREE.GLTFLoader: WebP required by asset but unsupported.' );
+
+			}
+
+			// Fall back to PNG or JPEG.
+			return parser.loadTexture( textureIndex );
+
+		} );
+
+	}
+
+	detectSupport() {
+
+		if ( ! this.isSupported ) {
+
+			this.isSupported = new Promise( function ( resolve ) {
+
+				const image = new Image();
+
+				// Lossy test image. Support for lossy images doesn't guarantee support for all
+				// WebP images, unfortunately.
+				image.src = 'data:image/webp;base64,UklGRiIAAABXRUJQVlA4IBYAAAAwAQCdASoBAAEADsD+JaQAA3AAAAAA';
+
+				image.onload = image.onerror = function () {
+
+					resolve( image.height === 1 );
+
+				};
+
+			} );
+
+		}
+
+		return this.isSupported;
+
+	}
+
+}
+
+/**
+ * AVIF Texture Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_texture_avif
+ */
+class GLTFTextureAVIFExtension {
+
+	constructor( parser ) {
+
+		this.parser = parser;
+		this.name = EXTENSIONS.EXT_TEXTURE_AVIF;
+		this.isSupported = null;
+
+	}
+
+	loadTexture( textureIndex ) {
+
+		const name = this.name;
+		const parser = this.parser;
+		const json = parser.json;
+
+		const textureDef = json.textures[ textureIndex ];
+
+		if ( ! textureDef.extensions || ! textureDef.extensions[ name ] ) {
+
+			return null;
+
+		}
+
+		const extension = textureDef.extensions[ name ];
+		const source = json.images[ extension.source ];
+
+		let loader = parser.textureLoader;
+		if ( source.uri ) {
+
+			const handler = parser.options.manager.getHandler( source.uri );
+			if ( handler !== null ) loader = handler;
+
+		}
+
+		return this.detectSupport().then( function ( isSupported ) {
+
+			if ( isSupported ) return parser.loadTextureImage( textureIndex, extension.source, loader );
+
+			if ( json.extensionsRequired && json.extensionsRequired.indexOf( name ) >= 0 ) {
+
+				throw new Error( 'THREE.GLTFLoader: AVIF required by asset but unsupported.' );
+
+			}
+
+			// Fall back to PNG or JPEG.
+			return parser.loadTexture( textureIndex );
+
+		} );
+
+	}
+
+	detectSupport() {
+
+		if ( ! this.isSupported ) {
+
+			this.isSupported = new Promise( function ( resolve ) {
+
+				const image = new Image();
+
+				// Lossy test image.
+				image.src = 'data:image/avif;base64,AAAAIGZ0eXBhdmlmAAAAAGF2aWZtaWYxbWlhZk1BMUIAAADybWV0YQAAAAAAAAAoaGRscgAAAAAAAAAAcGljdAAAAAAAAAAAAAAAAGxpYmF2aWYAAAAADnBpdG0AAAAAAAEAAAAeaWxvYwAAAABEAAABAAEAAAABAAABGgAAABcAAAAoaWluZgAAAAAAAQAAABppbmZlAgAAAAABAABhdjAxQ29sb3IAAAAAamlwcnAAAABLaXBjbwAAABRpc3BlAAAAAAAAAAEAAAABAAAAEHBpeGkAAAAAAwgICAAAAAxhdjFDgQAMAAAAABNjb2xybmNseAACAAIABoAAAAAXaXBtYQAAAAAAAAABAAEEAQKDBAAAAB9tZGF0EgAKCBgABogQEDQgMgkQAAAAB8dSLfI=';
+				image.onload = image.onerror = function () {
+
+					resolve( image.height === 1 );
+
+				};
+
+			} );
+
+		}
+
+		return this.isSupported;
+
+	}
+
+}
+
+/**
+ * meshopt BufferView Compression Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_meshopt_compression
+ */
+class GLTFMeshoptCompression {
+
+	constructor( parser ) {
+
+		this.name = EXTENSIONS.EXT_MESHOPT_COMPRESSION;
+		this.parser = parser;
+
+	}
+
+	loadBufferView( index ) {
+
+		const json = this.parser.json;
+		const bufferView = json.bufferViews[ index ];
+
+		if ( bufferView.extensions && bufferView.extensions[ this.name ] ) {
+
+			const extensionDef = bufferView.extensions[ this.name ];
+
+			const buffer = this.parser.getDependency( 'buffer', extensionDef.buffer );
+			const decoder = this.parser.options.meshoptDecoder;
+
+			if ( ! decoder || ! decoder.supported ) {
+
+				if ( json.extensionsRequired && json.extensionsRequired.indexOf( this.name ) >= 0 ) {
+
+					throw new Error( 'THREE.GLTFLoader: setMeshoptDecoder must be called before loading compressed files' );
+
+				} else {
+
+					// Assumes that the extension is optional and that fallback buffer data is present
+					return null;
+
+				}
+
+			}
+
+			return buffer.then( function ( res ) {
+
+				const byteOffset = extensionDef.byteOffset || 0;
+				const byteLength = extensionDef.byteLength || 0;
+
+				const count = extensionDef.count;
+				const stride = extensionDef.byteStride;
+
+				const source = new Uint8Array( res, byteOffset, byteLength );
+
+				if ( decoder.decodeGltfBufferAsync ) {
+
+					return decoder.decodeGltfBufferAsync( count, stride, source, extensionDef.mode, extensionDef.filter ).then( function ( res ) {
+
+						return res.buffer;
+
+					} );
+
+				} else {
+
+					// Support for MeshoptDecoder 0.18 or earlier, without decodeGltfBufferAsync
+					return decoder.ready.then( function () {
+
+						const result = new ArrayBuffer( count * stride );
+						decoder.decodeGltfBuffer( new Uint8Array( result ), count, stride, source, extensionDef.mode, extensionDef.filter );
+						return result;
+
+					} );
+
+				}
+
+			} );
+
+		} else {
+
+			return null;
+
+		}
+
+	}
+
+}
+
+/**
+ * GPU Instancing Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/EXT_mesh_gpu_instancing
+ *
+ */
+class GLTFMeshGpuInstancing {
+
+	constructor( parser ) {
+
+		this.name = EXTENSIONS.EXT_MESH_GPU_INSTANCING;
+		this.parser = parser;
+
+	}
+
+	createNodeMesh( nodeIndex ) {
+
+		const json = this.parser.json;
+		const nodeDef = json.nodes[ nodeIndex ];
+
+		if ( ! nodeDef.extensions || ! nodeDef.extensions[ this.name ] ||
+			nodeDef.mesh === undefined ) {
+
+			return null;
+
+		}
+
+		const meshDef = json.meshes[ nodeDef.mesh ];
+
+		// No Points or Lines + Instancing support yet
+
+		for ( const primitive of meshDef.primitives ) {
+
+			if ( primitive.mode !== WEBGL_CONSTANTS.TRIANGLES &&
+				 primitive.mode !== WEBGL_CONSTANTS.TRIANGLE_STRIP &&
+				 primitive.mode !== WEBGL_CONSTANTS.TRIANGLE_FAN &&
+				 primitive.mode !== undefined ) {
+
+				return null;
+
+			}
+
+		}
+
+		const extensionDef = nodeDef.extensions[ this.name ];
+		const attributesDef = extensionDef.attributes;
+
+		// @TODO: Can we support InstancedMesh + SkinnedMesh?
+
+		const pending = [];
+		const attributes = {};
+
+		for ( const key in attributesDef ) {
+
+			pending.push( this.parser.getDependency( 'accessor', attributesDef[ key ] ).then( accessor => {
+
+				attributes[ key ] = accessor;
+				return attributes[ key ];
+
+			} ) );
+
+		}
+
+		if ( pending.length < 1 ) {
+
+			return null;
+
+		}
+
+		pending.push( this.parser.createNodeMesh( nodeIndex ) );
+
+		return Promise.all( pending ).then( results => {
+
+			const nodeObject = results.pop();
+			const meshes = nodeObject.isGroup ? nodeObject.children : [ nodeObject ];
+			const count = results[ 0 ].count; // All attribute counts should be same
+			const instancedMeshes = [];
+
+			for ( const mesh of meshes ) {
+
+				// Temporal variables
+				const m = new Matrix4();
+				const p = new Vector3();
+				const q = new Quaternion();
+				const s = new Vector3( 1, 1, 1 );
+
+				const instancedMesh = new InstancedMesh( mesh.geometry, mesh.material, count );
+
+				for ( let i = 0; i < count; i ++ ) {
+
+					if ( attributes.TRANSLATION ) {
+
+						p.fromBufferAttribute( attributes.TRANSLATION, i );
+
+					}
+
+					if ( attributes.ROTATION ) {
+
+						q.fromBufferAttribute( attributes.ROTATION, i );
+
+					}
+
+					if ( attributes.SCALE ) {
+
+						s.fromBufferAttribute( attributes.SCALE, i );
+
+					}
+
+					instancedMesh.setMatrixAt( i, m.compose( p, q, s ) );
+
+				}
+
+				// Add instance attributes to the geometry, excluding TRS.
+				for ( const attributeName in attributes ) {
+
+					if ( attributeName === '_COLOR_0' ) {
+
+						const attr = attributes[ attributeName ];
+						instancedMesh.instanceColor = new InstancedBufferAttribute( attr.array, attr.itemSize, attr.normalized );
+
+					} else if ( attributeName !== 'TRANSLATION' &&
+						 attributeName !== 'ROTATION' &&
+						 attributeName !== 'SCALE' ) {
+
+						mesh.geometry.setAttribute( attributeName, attributes[ attributeName ] );
+
+					}
+
+				}
+
+				// Just in case
+				Object3D.prototype.copy.call( instancedMesh, mesh );
+
+				this.parser.assignFinalMaterial( instancedMesh );
+
+				instancedMeshes.push( instancedMesh );
+
+			}
+
+			if ( nodeObject.isGroup ) {
+
+				nodeObject.clear();
+
+				nodeObject.add( ... instancedMeshes );
+
+				return nodeObject;
+
+			}
+
+			return instancedMeshes[ 0 ];
+
+		} );
+
+	}
+
+}
+
+/* BINARY EXTENSION */
+const BINARY_EXTENSION_HEADER_MAGIC = 'glTF';
+const BINARY_EXTENSION_HEADER_LENGTH = 12;
+const BINARY_EXTENSION_CHUNK_TYPES = { JSON: 0x4E4F534A, BIN: 0x004E4942 };
+
+class GLTFBinaryExtension {
+
+	constructor( data ) {
+
+		this.name = EXTENSIONS.KHR_BINARY_GLTF;
+		this.content = null;
+		this.body = null;
+
+		const headerView = new DataView( data, 0, BINARY_EXTENSION_HEADER_LENGTH );
+		const textDecoder = new TextDecoder();
+
+		this.header = {
+			magic: textDecoder.decode( new Uint8Array( data.slice( 0, 4 ) ) ),
+			version: headerView.getUint32( 4, true ),
+			length: headerView.getUint32( 8, true )
+		};
+
+		if ( this.header.magic !== BINARY_EXTENSION_HEADER_MAGIC ) {
+
+			throw new Error( 'THREE.GLTFLoader: Unsupported glTF-Binary header.' );
+
+		} else if ( this.header.version < 2.0 ) {
+
+			throw new Error( 'THREE.GLTFLoader: Legacy binary file detected.' );
+
+		}
+
+		const chunkContentsLength = this.header.length - BINARY_EXTENSION_HEADER_LENGTH;
+		const chunkView = new DataView( data, BINARY_EXTENSION_HEADER_LENGTH );
+		let chunkIndex = 0;
+
+		while ( chunkIndex < chunkContentsLength ) {
+
+			const chunkLength = chunkView.getUint32( chunkIndex, true );
+			chunkIndex += 4;
+
+			const chunkType = chunkView.getUint32( chunkIndex, true );
+			chunkIndex += 4;
+
+			if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.JSON ) {
+
+				const contentArray = new Uint8Array( data, BINARY_EXTENSION_HEADER_LENGTH + chunkIndex, chunkLength );
+				this.content = textDecoder.decode( contentArray );
+
+			} else if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.BIN ) {
+
+				const byteOffset = BINARY_EXTENSION_HEADER_LENGTH + chunkIndex;
+				this.body = data.slice( byteOffset, byteOffset + chunkLength );
+
+			}
+
+			// Clients must ignore chunks with unknown types.
+
+			chunkIndex += chunkLength;
+
+		}
+
+		if ( this.content === null ) {
+
+			throw new Error( 'THREE.GLTFLoader: JSON content not found.' );
+
+		}
+
+	}
+
+}
+
+/**
+ * DRACO Mesh Compression Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_draco_mesh_compression
+ */
+class GLTFDracoMeshCompressionExtension {
+
+	constructor( json, dracoLoader ) {
+
+		if ( ! dracoLoader ) {
+
+			throw new Error( 'THREE.GLTFLoader: No DRACOLoader instance provided.' );
+
+		}
+
+		this.name = EXTENSIONS.KHR_DRACO_MESH_COMPRESSION;
+		this.json = json;
+		this.dracoLoader = dracoLoader;
+		this.dracoLoader.preload();
+
+	}
+
+	decodePrimitive( primitive, parser ) {
+
+		const json = this.json;
+		const dracoLoader = this.dracoLoader;
+		const bufferViewIndex = primitive.extensions[ this.name ].bufferView;
+		const gltfAttributeMap = primitive.extensions[ this.name ].attributes;
+		const threeAttributeMap = {};
+		const attributeNormalizedMap = {};
+		const attributeTypeMap = {};
+
+		for ( const attributeName in gltfAttributeMap ) {
+
+			const threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
+
+			threeAttributeMap[ threeAttributeName ] = gltfAttributeMap[ attributeName ];
+
+		}
+
+		for ( const attributeName in primitive.attributes ) {
+
+			const threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
+
+			if ( gltfAttributeMap[ attributeName ] !== undefined ) {
+
+				const accessorDef = json.accessors[ primitive.attributes[ attributeName ] ];
+				const componentType = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
+
+				attributeTypeMap[ threeAttributeName ] = componentType.name;
+				attributeNormalizedMap[ threeAttributeName ] = accessorDef.normalized === true;
+
+			}
+
+		}
+
+		return parser.getDependency( 'bufferView', bufferViewIndex ).then( function ( bufferView ) {
+
+			return new Promise( function ( resolve, reject ) {
+
+				dracoLoader.decodeDracoFile( bufferView, function ( geometry ) {
+
+					for ( const attributeName in geometry.attributes ) {
+
+						const attribute = geometry.attributes[ attributeName ];
+						const normalized = attributeNormalizedMap[ attributeName ];
+
+						if ( normalized !== undefined ) attribute.normalized = normalized;
+
+					}
+
+					resolve( geometry );
+
+				}, threeAttributeMap, attributeTypeMap, LinearSRGBColorSpace, reject );
+
+			} );
+
+		} );
+
+	}
+
+}
+
+/**
+ * Texture Transform Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_transform
+ */
+class GLTFTextureTransformExtension {
+
+	constructor() {
+
+		this.name = EXTENSIONS.KHR_TEXTURE_TRANSFORM;
+
+	}
+
+	extendTexture( texture, transform ) {
+
+		if ( ( transform.texCoord === undefined || transform.texCoord === texture.channel )
+			&& transform.offset === undefined
+			&& transform.rotation === undefined
+			&& transform.scale === undefined ) {
+
+			// See https://github.com/mrdoob/three.js/issues/21819.
+			return texture;
+
+		}
+
+		texture = texture.clone();
+
+		if ( transform.texCoord !== undefined ) {
+
+			texture.channel = transform.texCoord;
+
+		}
+
+		if ( transform.offset !== undefined ) {
+
+			texture.offset.fromArray( transform.offset );
+
+		}
+
+		if ( transform.rotation !== undefined ) {
+
+			texture.rotation = transform.rotation;
+
+		}
+
+		if ( transform.scale !== undefined ) {
+
+			texture.repeat.fromArray( transform.scale );
+
+		}
+
+		texture.needsUpdate = true;
+
+		return texture;
+
+	}
+
+}
+
+/**
+ * Mesh Quantization Extension
+ *
+ * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization
+ */
+class GLTFMeshQuantizationExtension {
+
+	constructor() {
+
+		this.name = EXTENSIONS.KHR_MESH_QUANTIZATION;
+
+	}
+
+}
+
+/*********************************/
+/********** INTERPOLATION ********/
+/*********************************/
+
+// Spline Interpolation
+// Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#appendix-c-spline-interpolation
+class GLTFCubicSplineInterpolant extends Interpolant {
+
+	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
+
+		super( parameterPositions, sampleValues, sampleSize, resultBuffer );
+
+	}
+
+	copySampleValue_( index ) {
+
+		// Copies a sample value to the result buffer. See description of glTF
+		// CUBICSPLINE values layout in interpolate_() function below.
+
+		const result = this.resultBuffer,
+			values = this.sampleValues,
+			valueSize = this.valueSize,
+			offset = index * valueSize * 3 + valueSize;
+
+		for ( let i = 0; i !== valueSize; i ++ ) {
+
+			result[ i ] = values[ offset + i ];
+
+		}
+
+		return result;
+
+	}
+
+	interpolate_( i1, t0, t, t1 ) {
+
+		const result = this.resultBuffer;
+		const values = this.sampleValues;
+		const stride = this.valueSize;
+
+		const stride2 = stride * 2;
+		const stride3 = stride * 3;
+
+		const td = t1 - t0;
+
+		const p = ( t - t0 ) / td;
+		const pp = p * p;
+		const ppp = pp * p;
+
+		const offset1 = i1 * stride3;
+		const offset0 = offset1 - stride3;
+
+		const s2 = - 2 * ppp + 3 * pp;
+		const s3 = ppp - pp;
+		const s0 = 1 - s2;
+		const s1 = s3 - pp + p;
+
+		// Layout of keyframe output values for CUBICSPLINE animations:
+		//   [ inTangent_1, splineVertex_1, outTangent_1, inTangent_2, splineVertex_2, ... ]
+		for ( let i = 0; i !== stride; i ++ ) {
+
+			const p0 = values[ offset0 + i + stride ]; // splineVertex_k
+			const m0 = values[ offset0 + i + stride2 ] * td; // outTangent_k * (t_k+1 - t_k)
+			const p1 = values[ offset1 + i + stride ]; // splineVertex_k+1
+			const m1 = values[ offset1 + i ] * td; // inTangent_k+1 * (t_k+1 - t_k)
+
+			result[ i ] = s0 * p0 + s1 * m0 + s2 * p1 + s3 * m1;
+
+		}
+
+		return result;
+
+	}
+
+}
+
+const _q = new Quaternion();
+
+class GLTFCubicSplineQuaternionInterpolant extends GLTFCubicSplineInterpolant {
+
+	interpolate_( i1, t0, t, t1 ) {
+
+		const result = super.interpolate_( i1, t0, t, t1 );
+
+		_q.fromArray( result ).normalize().toArray( result );
+
+		return result;
+
+	}
+
+}
+
+
+/*********************************/
+/********** INTERNALS ************/
+/*********************************/
+
+/* CONSTANTS */
+
+const WEBGL_CONSTANTS = {
+	FLOAT: 5126,
+	//FLOAT_MAT2: 35674,
+	FLOAT_MAT3: 35675,
+	FLOAT_MAT4: 35676,
+	FLOAT_VEC2: 35664,
+	FLOAT_VEC3: 35665,
+	FLOAT_VEC4: 35666,
+	LINEAR: 9729,
+	REPEAT: 10497,
+	SAMPLER_2D: 35678,
+	POINTS: 0,
+	LINES: 1,
+	LINE_LOOP: 2,
+	LINE_STRIP: 3,
+	TRIANGLES: 4,
+	TRIANGLE_STRIP: 5,
+	TRIANGLE_FAN: 6,
+	UNSIGNED_BYTE: 5121,
+	UNSIGNED_SHORT: 5123
+};
+
+const WEBGL_COMPONENT_TYPES = {
+	5120: Int8Array,
+	5121: Uint8Array,
+	5122: Int16Array,
+	5123: Uint16Array,
+	5125: Uint32Array,
+	5126: Float32Array
+};
+
+const WEBGL_FILTERS = {
+	9728: NearestFilter,
+	9729: LinearFilter,
+	9984: NearestMipmapNearestFilter,
+	9985: LinearMipmapNearestFilter,
+	9986: NearestMipmapLinearFilter,
+	9987: LinearMipmapLinearFilter
+};
+
+const WEBGL_WRAPPINGS = {
+	33071: ClampToEdgeWrapping,
+	33648: MirroredRepeatWrapping,
+	10497: RepeatWrapping
+};
+
+const WEBGL_TYPE_SIZES = {
+	'SCALAR': 1,
+	'VEC2': 2,
+	'VEC3': 3,
+	'VEC4': 4,
+	'MAT2': 4,
+	'MAT3': 9,
+	'MAT4': 16
+};
+
+const ATTRIBUTES = {
+	POSITION: 'position',
+	NORMAL: 'normal',
+	TANGENT: 'tangent',
+	TEXCOORD_0: 'uv',
+	TEXCOORD_1: 'uv1',
+	TEXCOORD_2: 'uv2',
+	TEXCOORD_3: 'uv3',
+	COLOR_0: 'color',
+	WEIGHTS_0: 'skinWeight',
+	JOINTS_0: 'skinIndex',
+};
+
+const PATH_PROPERTIES = {
+	scale: 'scale',
+	translation: 'position',
+	rotation: 'quaternion',
+	weights: 'morphTargetInfluences'
+};
+
+const INTERPOLATION = {
+	CUBICSPLINE: undefined, // We use a custom interpolant (GLTFCubicSplineInterpolation) for CUBICSPLINE tracks. Each
+		                        // keyframe track will be initialized with a default interpolation type, then modified.
+	LINEAR: InterpolateLinear,
+	STEP: InterpolateDiscrete
+};
+
+const ALPHA_MODES = {
+	OPAQUE: 'OPAQUE',
+	MASK: 'MASK',
+	BLEND: 'BLEND'
+};
+
+/**
+ * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#default-material
+ */
+function createDefaultMaterial( cache ) {
+
+	if ( cache[ 'DefaultMaterial' ] === undefined ) {
+
+		cache[ 'DefaultMaterial' ] = new MeshStandardMaterial( {
+			color: 0xFFFFFF,
+			emissive: 0x000000,
+			metalness: 1,
+			roughness: 1,
+			transparent: false,
+			depthTest: true,
+			side: FrontSide
+		} );
+
+	}
+
+	return cache[ 'DefaultMaterial' ];
+
+}
+
+function addUnknownExtensionsToUserData( knownExtensions, object, objectDef ) {
+
+	// Add unknown glTF extensions to an object's userData.
+
+	for ( const name in objectDef.extensions ) {
+
+		if ( knownExtensions[ name ] === undefined ) {
+
+			object.userData.gltfExtensions = object.userData.gltfExtensions || {};
+			object.userData.gltfExtensions[ name ] = objectDef.extensions[ name ];
+
+		}
+
+	}
+
+}
+
+/**
+ * @param {Object3D|Material|BufferGeometry} object
+ * @param {GLTF.definition} gltfDef
+ */
+function assignExtrasToUserData( object, gltfDef ) {
+
+	if ( gltfDef.extras !== undefined ) {
+
+		if ( typeof gltfDef.extras === 'object' ) {
+
+			Object.assign( object.userData, gltfDef.extras );
+
+		} else {
+
+			console.warn( 'THREE.GLTFLoader: Ignoring primitive type .extras, ' + gltfDef.extras );
+
+		}
+
+	}
+
+}
+
+/**
+ * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#morph-targets
+ *
+ * @param {BufferGeometry} geometry
+ * @param {Array<GLTF.Target>} targets
+ * @param {GLTFParser} parser
+ * @return {Promise<BufferGeometry>}
+ */
+function addMorphTargets( geometry, targets, parser ) {
+
+	let hasMorphPosition = false;
+	let hasMorphNormal = false;
+	let hasMorphColor = false;
+
+	for ( let i = 0, il = targets.length; i < il; i ++ ) {
+
+		const target = targets[ i ];
+
+		if ( target.POSITION !== undefined ) hasMorphPosition = true;
+		if ( target.NORMAL !== undefined ) hasMorphNormal = true;
+		if ( target.COLOR_0 !== undefined ) hasMorphColor = true;
+
+		if ( hasMorphPosition && hasMorphNormal && hasMorphColor ) break;
+
+	}
+
+	if ( ! hasMorphPosition && ! hasMorphNormal && ! hasMorphColor ) return Promise.resolve( geometry );
+
+	const pendingPositionAccessors = [];
+	const pendingNormalAccessors = [];
+	const pendingColorAccessors = [];
+
+	for ( let i = 0, il = targets.length; i < il; i ++ ) {
+
+		const target = targets[ i ];
+
+		if ( hasMorphPosition ) {
+
+			const pendingAccessor = target.POSITION !== undefined
+				? parser.getDependency( 'accessor', target.POSITION )
+				: geometry.attributes.position;
+
+			pendingPositionAccessors.push( pendingAccessor );
+
+		}
+
+		if ( hasMorphNormal ) {
+
+			const pendingAccessor = target.NORMAL !== undefined
+				? parser.getDependency( 'accessor', target.NORMAL )
+				: geometry.attributes.normal;
+
+			pendingNormalAccessors.push( pendingAccessor );
+
+		}
+
+		if ( hasMorphColor ) {
+
+			const pendingAccessor = target.COLOR_0 !== undefined
+				? parser.getDependency( 'accessor', target.COLOR_0 )
+				: geometry.attributes.color;
+
+			pendingColorAccessors.push( pendingAccessor );
+
+		}
+
+	}
+
+	return Promise.all( [
+		Promise.all( pendingPositionAccessors ),
+		Promise.all( pendingNormalAccessors ),
+		Promise.all( pendingColorAccessors )
+	] ).then( function ( accessors ) {
+
+		const morphPositions = accessors[ 0 ];
+		const morphNormals = accessors[ 1 ];
+		const morphColors = accessors[ 2 ];
+
+		if ( hasMorphPosition ) geometry.morphAttributes.position = morphPositions;
+		if ( hasMorphNormal ) geometry.morphAttributes.normal = morphNormals;
+		if ( hasMorphColor ) geometry.morphAttributes.color = morphColors;
+		geometry.morphTargetsRelative = true;
+
+		return geometry;
+
+	} );
+
+}
+
+/**
+ * @param {Mesh} mesh
+ * @param {GLTF.Mesh} meshDef
+ */
+function updateMorphTargets( mesh, meshDef ) {
+
+	mesh.updateMorphTargets();
+
+	if ( meshDef.weights !== undefined ) {
+
+		for ( let i = 0, il = meshDef.weights.length; i < il; i ++ ) {
+
+			mesh.morphTargetInfluences[ i ] = meshDef.weights[ i ];
+
+		}
+
+	}
+
+	// .extras has user-defined data, so check that .extras.targetNames is an array.
+	if ( meshDef.extras && Array.isArray( meshDef.extras.targetNames ) ) {
+
+		const targetNames = meshDef.extras.targetNames;
+
+		if ( mesh.morphTargetInfluences.length === targetNames.length ) {
+
+			mesh.morphTargetDictionary = {};
+
+			for ( let i = 0, il = targetNames.length; i < il; i ++ ) {
+
+				mesh.morphTargetDictionary[ targetNames[ i ] ] = i;
+
+			}
+
+		} else {
+
+			console.warn( 'THREE.GLTFLoader: Invalid extras.targetNames length. Ignoring names.' );
+
+		}
+
+	}
+
+}
+
+function createPrimitiveKey( primitiveDef ) {
+
+	let geometryKey;
+
+	const dracoExtension = primitiveDef.extensions && primitiveDef.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ];
+
+	if ( dracoExtension ) {
+
+		geometryKey = 'draco:' + dracoExtension.bufferView
+				+ ':' + dracoExtension.indices
+				+ ':' + createAttributesKey( dracoExtension.attributes );
+
+	} else {
+
+		geometryKey = primitiveDef.indices + ':' + createAttributesKey( primitiveDef.attributes ) + ':' + primitiveDef.mode;
+
+	}
+
+	if ( primitiveDef.targets !== undefined ) {
+
+		for ( let i = 0, il = primitiveDef.targets.length; i < il; i ++ ) {
+
+			geometryKey += ':' + createAttributesKey( primitiveDef.targets[ i ] );
+
+		}
+
+	}
+
+	return geometryKey;
+
+}
+
+function createAttributesKey( attributes ) {
+
+	let attributesKey = '';
+
+	const keys = Object.keys( attributes ).sort();
+
+	for ( let i = 0, il = keys.length; i < il; i ++ ) {
+
+		attributesKey += keys[ i ] + ':' + attributes[ keys[ i ] ] + ';';
+
+	}
+
+	return attributesKey;
+
+}
+
+function getNormalizedComponentScale( constructor ) {
+
+	// Reference:
+	// https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization#encoding-quantized-data
+
+	switch ( constructor ) {
+
+		case Int8Array:
+			return 1 / 127;
+
+		case Uint8Array:
+			return 1 / 255;
+
+		case Int16Array:
+			return 1 / 32767;
+
+		case Uint16Array:
+			return 1 / 65535;
+
+		default:
+			throw new Error( 'THREE.GLTFLoader: Unsupported normalized accessor component type.' );
+
+	}
+
+}
+
+function getImageURIMimeType( uri ) {
+
+	if ( uri.search( /\.jpe?g($|\?)/i ) > 0 || uri.search( /^data\:image\/jpeg/ ) === 0 ) return 'image/jpeg';
+	if ( uri.search( /\.webp($|\?)/i ) > 0 || uri.search( /^data\:image\/webp/ ) === 0 ) return 'image/webp';
+
+	return 'image/png';
+
+}
+
+const _identityMatrix = new Matrix4();
+
+/* GLTF PARSER */
+
+class GLTFParser {
+
+	constructor( json = {}, options = {} ) {
+
+		this.json = json;
+		this.extensions = {};
+		this.plugins = {};
+		this.options = options;
+
+		// loader object cache
+		this.cache = new GLTFRegistry();
+
+		// associations between Three.js objects and glTF elements
+		this.associations = new Map();
+
+		// BufferGeometry caching
+		this.primitiveCache = {};
+
+		// Node cache
+		this.nodeCache = {};
+
+		// Object3D instance caches
+		this.meshCache = { refs: {}, uses: {} };
+		this.cameraCache = { refs: {}, uses: {} };
+		this.lightCache = { refs: {}, uses: {} };
+
+		this.sourceCache = {};
+		this.textureCache = {};
+
+		// Track node names, to ensure no duplicates
+		this.nodeNamesUsed = {};
+
+		// Use an ImageBitmapLoader if imageBitmaps are supported. Moves much of the
+		// expensive work of uploading a texture to the GPU off the main thread.
+
+		let isSafari = false;
+		let safariVersion = - 1;
+		let isFirefox = false;
+		let firefoxVersion = - 1;
+
+		if ( typeof navigator !== 'undefined' ) {
+
+			const userAgent = navigator.userAgent;
+
+			isSafari = /^((?!chrome|android).)*safari/i.test( userAgent ) === true;
+			const safariMatch = userAgent.match( /Version\/(\d+)/ );
+			safariVersion = isSafari && safariMatch ? parseInt( safariMatch[ 1 ], 10 ) : - 1;
+
+			isFirefox = userAgent.indexOf( 'Firefox' ) > - 1;
+			firefoxVersion = isFirefox ? userAgent.match( /Firefox\/([0-9]+)\./ )[ 1 ] : - 1;
+
+		}
+
+		if ( typeof createImageBitmap === 'undefined' || ( isSafari && safariVersion < 17 ) || ( isFirefox && firefoxVersion < 98 ) ) {
+
+			this.textureLoader = new TextureLoader( this.options.manager );
+
+		} else {
+
+			this.textureLoader = new ImageBitmapLoader( this.options.manager );
+
+		}
+
+		this.textureLoader.setCrossOrigin( this.options.crossOrigin );
+		this.textureLoader.setRequestHeader( this.options.requestHeader );
+
+		this.fileLoader = new FileLoader( this.options.manager );
+		this.fileLoader.setResponseType( 'arraybuffer' );
+
+		if ( this.options.crossOrigin === 'use-credentials' ) {
+
+			this.fileLoader.setWithCredentials( true );
+
+		}
+
+	}
+
+	setExtensions( extensions ) {
+
+		this.extensions = extensions;
+
+	}
+
+	setPlugins( plugins ) {
+
+		this.plugins = plugins;
+
+	}
+
+	parse( onLoad, onError ) {
+
+		const parser = this;
+		const json = this.json;
+		const extensions = this.extensions;
+
+		// Clear the loader cache
+		this.cache.removeAll();
+		this.nodeCache = {};
+
+		// Mark the special nodes/meshes in json for efficient parse
+		this._invokeAll( function ( ext ) {
+
+			return ext._markDefs && ext._markDefs();
+
+		} );
+
+		Promise.all( this._invokeAll( function ( ext ) {
+
+			return ext.beforeRoot && ext.beforeRoot();
+
+		} ) ).then( function () {
+
+			return Promise.all( [
+
+				parser.getDependencies( 'scene' ),
+				parser.getDependencies( 'animation' ),
+				parser.getDependencies( 'camera' ),
+
+			] );
+
+		} ).then( function ( dependencies ) {
+
+			const result = {
+				scene: dependencies[ 0 ][ json.scene || 0 ],
+				scenes: dependencies[ 0 ],
+				animations: dependencies[ 1 ],
+				cameras: dependencies[ 2 ],
+				asset: json.asset,
+				parser: parser,
+				userData: {}
+			};
+
+			addUnknownExtensionsToUserData( extensions, result, json );
+
+			assignExtrasToUserData( result, json );
+
+			return Promise.all( parser._invokeAll( function ( ext ) {
+
+				return ext.afterRoot && ext.afterRoot( result );
+
+			} ) ).then( function () {
+
+				for ( const scene of result.scenes ) {
+
+					scene.updateMatrixWorld();
+
+				}
+
+				onLoad( result );
+
+			} );
+
+		} ).catch( onError );
+
+	}
+
+	/**
+	 * Marks the special nodes/meshes in json for efficient parse.
+	 */
+	_markDefs() {
+
+		const nodeDefs = this.json.nodes || [];
+		const skinDefs = this.json.skins || [];
+		const meshDefs = this.json.meshes || [];
+
+		// Nothing in the node definition indicates whether it is a Bone or an
+		// Object3D. Use the skins' joint references to mark bones.
+		for ( let skinIndex = 0, skinLength = skinDefs.length; skinIndex < skinLength; skinIndex ++ ) {
+
+			const joints = skinDefs[ skinIndex ].joints;
+
+			for ( let i = 0, il = joints.length; i < il; i ++ ) {
+
+				nodeDefs[ joints[ i ] ].isBone = true;
+
+			}
+
+		}
+
+		// Iterate over all nodes, marking references to shared resources,
+		// as well as skeleton joints.
+		for ( let nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {
+
+			const nodeDef = nodeDefs[ nodeIndex ];
+
+			if ( nodeDef.mesh !== undefined ) {
+
+				this._addNodeRef( this.meshCache, nodeDef.mesh );
+
+				// Nothing in the mesh definition indicates whether it is
+				// a SkinnedMesh or Mesh. Use the node's mesh reference
+				// to mark SkinnedMesh if node has skin.
+				if ( nodeDef.skin !== undefined ) {
+
+					meshDefs[ nodeDef.mesh ].isSkinnedMesh = true;
+
+				}
+
+			}
+
+			if ( nodeDef.camera !== undefined ) {
+
+				this._addNodeRef( this.cameraCache, nodeDef.camera );
+
+			}
+
+		}
+
+	}
+
+	/**
+	 * Counts references to shared node / Object3D resources. These resources
+	 * can be reused, or "instantiated", at multiple nodes in the scene
+	 * hierarchy. Mesh, Camera, and Light instances are instantiated and must
+	 * be marked. Non-scenegraph resources (like Materials, Geometries, and
+	 * Textures) can be reused directly and are not marked here.
+	 *
+	 * Example: CesiumMilkTruck sample model reuses "Wheel" meshes.
+	 */
+	_addNodeRef( cache, index ) {
+
+		if ( index === undefined ) return;
+
+		if ( cache.refs[ index ] === undefined ) {
+
+			cache.refs[ index ] = cache.uses[ index ] = 0;
+
+		}
+
+		cache.refs[ index ] ++;
+
+	}
+
+	/** Returns a reference to a shared resource, cloning it if necessary. */
+	_getNodeRef( cache, index, object ) {
+
+		if ( cache.refs[ index ] <= 1 ) return object;
+
+		const ref = object.clone();
+
+		// Propagates mappings to the cloned object, prevents mappings on the
+		// original object from being lost.
+		const updateMappings = ( original, clone ) => {
+
+			const mappings = this.associations.get( original );
+			if ( mappings != null ) {
+
+				this.associations.set( clone, mappings );
+
+			}
+
+			for ( const [ i, child ] of original.children.entries() ) {
+
+				updateMappings( child, clone.children[ i ] );
+
+			}
+
+		};
+
+		updateMappings( object, ref );
+
+		ref.name += '_instance_' + ( cache.uses[ index ] ++ );
+
+		return ref;
+
+	}
+
+	_invokeOne( func ) {
+
+		const extensions = Object.values( this.plugins );
+		extensions.push( this );
+
+		for ( let i = 0; i < extensions.length; i ++ ) {
+
+			const result = func( extensions[ i ] );
+
+			if ( result ) return result;
+
+		}
+
+		return null;
+
+	}
+
+	_invokeAll( func ) {
+
+		const extensions = Object.values( this.plugins );
+		extensions.unshift( this );
+
+		const pending = [];
+
+		for ( let i = 0; i < extensions.length; i ++ ) {
+
+			const result = func( extensions[ i ] );
+
+			if ( result ) pending.push( result );
+
+		}
+
+		return pending;
+
+	}
+
+	/**
+	 * Requests the specified dependency asynchronously, with caching.
+	 * @param {string} type
+	 * @param {number} index
+	 * @return {Promise<Object3D|Material|THREE.Texture|AnimationClip|ArrayBuffer|Object>}
+	 */
+	getDependency( type, index ) {
+
+		const cacheKey = type + ':' + index;
+		let dependency = this.cache.get( cacheKey );
+
+		if ( ! dependency ) {
+
+			switch ( type ) {
+
+				case 'scene':
+					dependency = this.loadScene( index );
+					break;
+
+				case 'node':
+					dependency = this._invokeOne( function ( ext ) {
+
+						return ext.loadNode && ext.loadNode( index );
+
+					} );
+					break;
+
+				case 'mesh':
+					dependency = this._invokeOne( function ( ext ) {
+
+						return ext.loadMesh && ext.loadMesh( index );
+
+					} );
+					break;
+
+				case 'accessor':
+					dependency = this.loadAccessor( index );
+					break;
+
+				case 'bufferView':
+					dependency = this._invokeOne( function ( ext ) {
+
+						return ext.loadBufferView && ext.loadBufferView( index );
+
+					} );
+					break;
+
+				case 'buffer':
+					dependency = this.loadBuffer( index );
+					break;
+
+				case 'material':
+					dependency = this._invokeOne( function ( ext ) {
+
+						return ext.loadMaterial && ext.loadMaterial( index );
+
+					} );
+					break;
+
+				case 'texture':
+					dependency = this._invokeOne( function ( ext ) {
+
+						return ext.loadTexture && ext.loadTexture( index );
+
+					} );
+					break;
+
+				case 'skin':
+					dependency = this.loadSkin( index );
+					break;
+
+				case 'animation':
+					dependency = this._invokeOne( function ( ext ) {
+
+						return ext.loadAnimation && ext.loadAnimation( index );
+
+					} );
+					break;
+
+				case 'camera':
+					dependency = this.loadCamera( index );
+					break;
+
+				default:
+					dependency = this._invokeOne( function ( ext ) {
+
+						return ext != this && ext.getDependency && ext.getDependency( type, index );
+
+					} );
+
+					if ( ! dependency ) {
+
+						throw new Error( 'Unknown type: ' + type );
+
+					}
+
+					break;
+
+			}
+
+			this.cache.add( cacheKey, dependency );
+
+		}
+
+		return dependency;
+
+	}
+
+	/**
+	 * Requests all dependencies of the specified type asynchronously, with caching.
+	 * @param {string} type
+	 * @return {Promise<Array<Object>>}
+	 */
+	getDependencies( type ) {
+
+		let dependencies = this.cache.get( type );
+
+		if ( ! dependencies ) {
+
+			const parser = this;
+			const defs = this.json[ type + ( type === 'mesh' ? 'es' : 's' ) ] || [];
+
+			dependencies = Promise.all( defs.map( function ( def, index ) {
+
+				return parser.getDependency( type, index );
+
+			} ) );
+
+			this.cache.add( type, dependencies );
+
+		}
+
+		return dependencies;
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
+	 * @param {number} bufferIndex
+	 * @return {Promise<ArrayBuffer>}
+	 */
+	loadBuffer( bufferIndex ) {
+
+		const bufferDef = this.json.buffers[ bufferIndex ];
+		const loader = this.fileLoader;
+
+		if ( bufferDef.type && bufferDef.type !== 'arraybuffer' ) {
+
+			throw new Error( 'THREE.GLTFLoader: ' + bufferDef.type + ' buffer type is not supported.' );
+
+		}
+
+		// If present, GLB container is required to be the first buffer.
+		if ( bufferDef.uri === undefined && bufferIndex === 0 ) {
+
+			return Promise.resolve( this.extensions[ EXTENSIONS.KHR_BINARY_GLTF ].body );
+
+		}
+
+		const options = this.options;
+
+		return new Promise( function ( resolve, reject ) {
+
+			loader.load( LoaderUtils.resolveURL( bufferDef.uri, options.path ), resolve, undefined, function () {
+
+				reject( new Error( 'THREE.GLTFLoader: Failed to load buffer "' + bufferDef.uri + '".' ) );
+
+			} );
+
+		} );
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#buffers-and-buffer-views
+	 * @param {number} bufferViewIndex
+	 * @return {Promise<ArrayBuffer>}
+	 */
+	loadBufferView( bufferViewIndex ) {
+
+		const bufferViewDef = this.json.bufferViews[ bufferViewIndex ];
+
+		return this.getDependency( 'buffer', bufferViewDef.buffer ).then( function ( buffer ) {
+
+			const byteLength = bufferViewDef.byteLength || 0;
+			const byteOffset = bufferViewDef.byteOffset || 0;
+			return buffer.slice( byteOffset, byteOffset + byteLength );
+
+		} );
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#accessors
+	 * @param {number} accessorIndex
+	 * @return {Promise<BufferAttribute|InterleavedBufferAttribute>}
+	 */
+	loadAccessor( accessorIndex ) {
+
+		const parser = this;
+		const json = this.json;
+
+		const accessorDef = this.json.accessors[ accessorIndex ];
+
+		if ( accessorDef.bufferView === undefined && accessorDef.sparse === undefined ) {
+
+			const itemSize = WEBGL_TYPE_SIZES[ accessorDef.type ];
+			const TypedArray = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
+			const normalized = accessorDef.normalized === true;
+
+			const array = new TypedArray( accessorDef.count * itemSize );
+			return Promise.resolve( new BufferAttribute( array, itemSize, normalized ) );
+
+		}
+
+		const pendingBufferViews = [];
+
+		if ( accessorDef.bufferView !== undefined ) {
+
+			pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.bufferView ) );
+
+		} else {
+
+			pendingBufferViews.push( null );
+
+		}
+
+		if ( accessorDef.sparse !== undefined ) {
+
+			pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.sparse.indices.bufferView ) );
+			pendingBufferViews.push( this.getDependency( 'bufferView', accessorDef.sparse.values.bufferView ) );
+
+		}
+
+		return Promise.all( pendingBufferViews ).then( function ( bufferViews ) {
+
+			const bufferView = bufferViews[ 0 ];
+
+			const itemSize = WEBGL_TYPE_SIZES[ accessorDef.type ];
+			const TypedArray = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
+
+			// For VEC3: itemSize is 3, elementBytes is 4, itemBytes is 12.
+			const elementBytes = TypedArray.BYTES_PER_ELEMENT;
+			const itemBytes = elementBytes * itemSize;
+			const byteOffset = accessorDef.byteOffset || 0;
+			const byteStride = accessorDef.bufferView !== undefined ? json.bufferViews[ accessorDef.bufferView ].byteStride : undefined;
+			const normalized = accessorDef.normalized === true;
+			let array, bufferAttribute;
+
+			// The buffer is not interleaved if the stride is the item size in bytes.
+			if ( byteStride && byteStride !== itemBytes ) {
+
+				// Each "slice" of the buffer, as defined by 'count' elements of 'byteStride' bytes, gets its own InterleavedBuffer
+				// This makes sure that IBA.count reflects accessor.count properly
+				const ibSlice = Math.floor( byteOffset / byteStride );
+				const ibCacheKey = 'InterleavedBuffer:' + accessorDef.bufferView + ':' + accessorDef.componentType + ':' + ibSlice + ':' + accessorDef.count;
+				let ib = parser.cache.get( ibCacheKey );
+
+				if ( ! ib ) {
+
+					array = new TypedArray( bufferView, ibSlice * byteStride, accessorDef.count * byteStride / elementBytes );
+
+					// Integer parameters to IB/IBA are in array elements, not bytes.
+					ib = new InterleavedBuffer( array, byteStride / elementBytes );
+
+					parser.cache.add( ibCacheKey, ib );
+
+				}
+
+				bufferAttribute = new InterleavedBufferAttribute( ib, itemSize, ( byteOffset % byteStride ) / elementBytes, normalized );
+
+			} else {
+
+				if ( bufferView === null ) {
+
+					array = new TypedArray( accessorDef.count * itemSize );
+
+				} else {
+
+					array = new TypedArray( bufferView, byteOffset, accessorDef.count * itemSize );
+
+				}
+
+				bufferAttribute = new BufferAttribute( array, itemSize, normalized );
+
+			}
+
+			// https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#sparse-accessors
+			if ( accessorDef.sparse !== undefined ) {
+
+				const itemSizeIndices = WEBGL_TYPE_SIZES.SCALAR;
+				const TypedArrayIndices = WEBGL_COMPONENT_TYPES[ accessorDef.sparse.indices.componentType ];
+
+				const byteOffsetIndices = accessorDef.sparse.indices.byteOffset || 0;
+				const byteOffsetValues = accessorDef.sparse.values.byteOffset || 0;
+
+				const sparseIndices = new TypedArrayIndices( bufferViews[ 1 ], byteOffsetIndices, accessorDef.sparse.count * itemSizeIndices );
+				const sparseValues = new TypedArray( bufferViews[ 2 ], byteOffsetValues, accessorDef.sparse.count * itemSize );
+
+				if ( bufferView !== null ) {
+
+					// Avoid modifying the original ArrayBuffer, if the bufferView wasn't initialized with zeroes.
+					bufferAttribute = new BufferAttribute( bufferAttribute.array.slice(), bufferAttribute.itemSize, bufferAttribute.normalized );
+
+				}
+
+				for ( let i = 0, il = sparseIndices.length; i < il; i ++ ) {
+
+					const index = sparseIndices[ i ];
+
+					bufferAttribute.setX( index, sparseValues[ i * itemSize ] );
+					if ( itemSize >= 2 ) bufferAttribute.setY( index, sparseValues[ i * itemSize + 1 ] );
+					if ( itemSize >= 3 ) bufferAttribute.setZ( index, sparseValues[ i * itemSize + 2 ] );
+					if ( itemSize >= 4 ) bufferAttribute.setW( index, sparseValues[ i * itemSize + 3 ] );
+					if ( itemSize >= 5 ) throw new Error( 'THREE.GLTFLoader: Unsupported itemSize in sparse BufferAttribute.' );
+
+				}
+
+			}
+
+			return bufferAttribute;
+
+		} );
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#textures
+	 * @param {number} textureIndex
+	 * @return {Promise<THREE.Texture|null>}
+	 */
+	loadTexture( textureIndex ) {
+
+		const json = this.json;
+		const options = this.options;
+		const textureDef = json.textures[ textureIndex ];
+		const sourceIndex = textureDef.source;
+		const sourceDef = json.images[ sourceIndex ];
+
+		let loader = this.textureLoader;
+
+		if ( sourceDef.uri ) {
+
+			const handler = options.manager.getHandler( sourceDef.uri );
+			if ( handler !== null ) loader = handler;
+
+		}
+
+		return this.loadTextureImage( textureIndex, sourceIndex, loader );
+
+	}
+
+	loadTextureImage( textureIndex, sourceIndex, loader ) {
+
+		const parser = this;
+		const json = this.json;
+
+		const textureDef = json.textures[ textureIndex ];
+		const sourceDef = json.images[ sourceIndex ];
+
+		const cacheKey = ( sourceDef.uri || sourceDef.bufferView ) + ':' + textureDef.sampler;
+
+		if ( this.textureCache[ cacheKey ] ) {
+
+			// See https://github.com/mrdoob/three.js/issues/21559.
+			return this.textureCache[ cacheKey ];
+
+		}
+
+		const promise = this.loadImageSource( sourceIndex, loader ).then( function ( texture ) {
+
+			texture.flipY = false;
+
+			texture.name = textureDef.name || sourceDef.name || '';
+
+			if ( texture.name === '' && typeof sourceDef.uri === 'string' && sourceDef.uri.startsWith( 'data:image/' ) === false ) {
+
+				texture.name = sourceDef.uri;
+
+			}
+
+			const samplers = json.samplers || {};
+			const sampler = samplers[ textureDef.sampler ] || {};
+
+			texture.magFilter = WEBGL_FILTERS[ sampler.magFilter ] || LinearFilter;
+			texture.minFilter = WEBGL_FILTERS[ sampler.minFilter ] || LinearMipmapLinearFilter;
+			texture.wrapS = WEBGL_WRAPPINGS[ sampler.wrapS ] || RepeatWrapping;
+			texture.wrapT = WEBGL_WRAPPINGS[ sampler.wrapT ] || RepeatWrapping;
+
+			parser.associations.set( texture, { textures: textureIndex } );
+
+			return texture;
+
+		} ).catch( function () {
+
+			return null;
+
+		} );
+
+		this.textureCache[ cacheKey ] = promise;
+
+		return promise;
+
+	}
+
+	loadImageSource( sourceIndex, loader ) {
+
+		const parser = this;
+		const json = this.json;
+		const options = this.options;
+
+		if ( this.sourceCache[ sourceIndex ] !== undefined ) {
+
+			return this.sourceCache[ sourceIndex ].then( ( texture ) => texture.clone() );
+
+		}
+
+		const sourceDef = json.images[ sourceIndex ];
+
+		const URL = self.URL || self.webkitURL;
+
+		let sourceURI = sourceDef.uri || '';
+		let isObjectURL = false;
+
+		if ( sourceDef.bufferView !== undefined ) {
+
+			// Load binary image data from bufferView, if provided.
+
+			sourceURI = parser.getDependency( 'bufferView', sourceDef.bufferView ).then( function ( bufferView ) {
+
+				isObjectURL = true;
+				const blob = new Blob( [ bufferView ], { type: sourceDef.mimeType } );
+				sourceURI = URL.createObjectURL( blob );
+				return sourceURI;
+
+			} );
+
+		} else if ( sourceDef.uri === undefined ) {
+
+			throw new Error( 'THREE.GLTFLoader: Image ' + sourceIndex + ' is missing URI and bufferView' );
+
+		}
+
+		const promise = Promise.resolve( sourceURI ).then( function ( sourceURI ) {
+
+			return new Promise( function ( resolve, reject ) {
+
+				let onLoad = resolve;
+
+				if ( loader.isImageBitmapLoader === true ) {
+
+					onLoad = function ( imageBitmap ) {
+
+						const texture = new Texture( imageBitmap );
+						texture.needsUpdate = true;
+
+						resolve( texture );
+
+					};
+
+				}
+
+				loader.load( LoaderUtils.resolveURL( sourceURI, options.path ), onLoad, undefined, reject );
+
+			} );
+
+		} ).then( function ( texture ) {
+
+			// Clean up resources and configure Texture.
+
+			if ( isObjectURL === true ) {
+
+				URL.revokeObjectURL( sourceURI );
+
+			}
+
+			assignExtrasToUserData( texture, sourceDef );
+
+			texture.userData.mimeType = sourceDef.mimeType || getImageURIMimeType( sourceDef.uri );
+
+			return texture;
+
+		} ).catch( function ( error ) {
+
+			console.error( 'THREE.GLTFLoader: Couldn\'t load texture', sourceURI );
+			throw error;
+
+		} );
+
+		this.sourceCache[ sourceIndex ] = promise;
+		return promise;
+
+	}
+
+	/**
+	 * Asynchronously assigns a texture to the given material parameters.
+	 * @param {Object} materialParams
+	 * @param {string} mapName
+	 * @param {Object} mapDef
+	 * @return {Promise<Texture>}
+	 */
+	assignTexture( materialParams, mapName, mapDef, colorSpace ) {
+
+		const parser = this;
+
+		return this.getDependency( 'texture', mapDef.index ).then( function ( texture ) {
+
+			if ( ! texture ) return null;
+
+			if ( mapDef.texCoord !== undefined && mapDef.texCoord > 0 ) {
+
+				texture = texture.clone();
+				texture.channel = mapDef.texCoord;
+
+			}
+
+			if ( parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] ) {
+
+				const transform = mapDef.extensions !== undefined ? mapDef.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] : undefined;
+
+				if ( transform ) {
+
+					const gltfReference = parser.associations.get( texture );
+					texture = parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ].extendTexture( texture, transform );
+					parser.associations.set( texture, gltfReference );
+
+				}
+
+			}
+
+			if ( colorSpace !== undefined ) {
+
+				texture.colorSpace = colorSpace;
+
+			}
+
+			materialParams[ mapName ] = texture;
+
+			return texture;
+
+		} );
+
+	}
+
+	/**
+	 * Assigns final material to a Mesh, Line, or Points instance. The instance
+	 * already has a material (generated from the glTF material options alone)
+	 * but reuse of the same glTF material may require multiple threejs materials
+	 * to accommodate different primitive types, defines, etc. New materials will
+	 * be created if necessary, and reused from a cache.
+	 * @param  {Object3D} mesh Mesh, Line, or Points instance.
+	 */
+	assignFinalMaterial( mesh ) {
+
+		const geometry = mesh.geometry;
+		let material = mesh.material;
+
+		const useDerivativeTangents = geometry.attributes.tangent === undefined;
+		const useVertexColors = geometry.attributes.color !== undefined;
+		const useFlatShading = geometry.attributes.normal === undefined;
+
+		if ( mesh.isPoints ) {
+
+			const cacheKey = 'PointsMaterial:' + material.uuid;
+
+			let pointsMaterial = this.cache.get( cacheKey );
+
+			if ( ! pointsMaterial ) {
+
+				pointsMaterial = new PointsMaterial();
+				Material.prototype.copy.call( pointsMaterial, material );
+				pointsMaterial.color.copy( material.color );
+				pointsMaterial.map = material.map;
+				pointsMaterial.sizeAttenuation = false; // glTF spec says points should be 1px
+
+				this.cache.add( cacheKey, pointsMaterial );
+
+			}
+
+			material = pointsMaterial;
+
+		} else if ( mesh.isLine ) {
+
+			const cacheKey = 'LineBasicMaterial:' + material.uuid;
+
+			let lineMaterial = this.cache.get( cacheKey );
+
+			if ( ! lineMaterial ) {
+
+				lineMaterial = new LineBasicMaterial();
+				Material.prototype.copy.call( lineMaterial, material );
+				lineMaterial.color.copy( material.color );
+				lineMaterial.map = material.map;
+
+				this.cache.add( cacheKey, lineMaterial );
+
+			}
+
+			material = lineMaterial;
+
+		}
+
+		// Clone the material if it will be modified
+		if ( useDerivativeTangents || useVertexColors || useFlatShading ) {
+
+			let cacheKey = 'ClonedMaterial:' + material.uuid + ':';
+
+			if ( useDerivativeTangents ) cacheKey += 'derivative-tangents:';
+			if ( useVertexColors ) cacheKey += 'vertex-colors:';
+			if ( useFlatShading ) cacheKey += 'flat-shading:';
+
+			let cachedMaterial = this.cache.get( cacheKey );
+
+			if ( ! cachedMaterial ) {
+
+				cachedMaterial = material.clone();
+
+				if ( useVertexColors ) cachedMaterial.vertexColors = true;
+				if ( useFlatShading ) cachedMaterial.flatShading = true;
+
+				if ( useDerivativeTangents ) {
+
+					// https://github.com/mrdoob/three.js/issues/11438#issuecomment-507003995
+					if ( cachedMaterial.normalScale ) cachedMaterial.normalScale.y *= - 1;
+					if ( cachedMaterial.clearcoatNormalScale ) cachedMaterial.clearcoatNormalScale.y *= - 1;
+
+				}
+
+				this.cache.add( cacheKey, cachedMaterial );
+
+				this.associations.set( cachedMaterial, this.associations.get( material ) );
+
+			}
+
+			material = cachedMaterial;
+
+		}
+
+		mesh.material = material;
+
+	}
+
+	getMaterialType( /* materialIndex */ ) {
+
+		return MeshStandardMaterial;
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#materials
+	 * @param {number} materialIndex
+	 * @return {Promise<Material>}
+	 */
+	loadMaterial( materialIndex ) {
+
+		const parser = this;
+		const json = this.json;
+		const extensions = this.extensions;
+		const materialDef = json.materials[ materialIndex ];
+
+		let materialType;
+		const materialParams = {};
+		const materialExtensions = materialDef.extensions || {};
+
+		const pending = [];
+
+		if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ] ) {
+
+			const kmuExtension = extensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ];
+			materialType = kmuExtension.getMaterialType();
+			pending.push( kmuExtension.extendParams( materialParams, materialDef, parser ) );
+
+		} else {
+
+			// Specification:
+			// https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#metallic-roughness-material
+
+			const metallicRoughness = materialDef.pbrMetallicRoughness || {};
+
+			materialParams.color = new Color( 1.0, 1.0, 1.0 );
+			materialParams.opacity = 1.0;
+
+			if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
+
+				const array = metallicRoughness.baseColorFactor;
+
+				materialParams.color.setRGB( array[ 0 ], array[ 1 ], array[ 2 ], LinearSRGBColorSpace );
+				materialParams.opacity = array[ 3 ];
+
+			}
+
+			if ( metallicRoughness.baseColorTexture !== undefined ) {
+
+				pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture, SRGBColorSpace ) );
+
+			}
+
+			materialParams.metalness = metallicRoughness.metallicFactor !== undefined ? metallicRoughness.metallicFactor : 1.0;
+			materialParams.roughness = metallicRoughness.roughnessFactor !== undefined ? metallicRoughness.roughnessFactor : 1.0;
+
+			if ( metallicRoughness.metallicRoughnessTexture !== undefined ) {
+
+				pending.push( parser.assignTexture( materialParams, 'metalnessMap', metallicRoughness.metallicRoughnessTexture ) );
+				pending.push( parser.assignTexture( materialParams, 'roughnessMap', metallicRoughness.metallicRoughnessTexture ) );
+
+			}
+
+			materialType = this._invokeOne( function ( ext ) {
+
+				return ext.getMaterialType && ext.getMaterialType( materialIndex );
+
+			} );
+
+			pending.push( Promise.all( this._invokeAll( function ( ext ) {
+
+				return ext.extendMaterialParams && ext.extendMaterialParams( materialIndex, materialParams );
+
+			} ) ) );
+
+		}
+
+		if ( materialDef.doubleSided === true ) {
+
+			materialParams.side = DoubleSide;
+
+		}
+
+		const alphaMode = materialDef.alphaMode || ALPHA_MODES.OPAQUE;
+
+		if ( alphaMode === ALPHA_MODES.BLEND ) {
+
+			materialParams.transparent = true;
+
+			// See: https://github.com/mrdoob/three.js/issues/17706
+			materialParams.depthWrite = false;
+
+		} else {
+
+			materialParams.transparent = false;
+
+			if ( alphaMode === ALPHA_MODES.MASK ) {
+
+				materialParams.alphaTest = materialDef.alphaCutoff !== undefined ? materialDef.alphaCutoff : 0.5;
+
+			}
+
+		}
+
+		if ( materialDef.normalTexture !== undefined && materialType !== MeshBasicMaterial ) {
+
+			pending.push( parser.assignTexture( materialParams, 'normalMap', materialDef.normalTexture ) );
+
+			materialParams.normalScale = new Vector2( 1, 1 );
+
+			if ( materialDef.normalTexture.scale !== undefined ) {
+
+				const scale = materialDef.normalTexture.scale;
+
+				materialParams.normalScale.set( scale, scale );
+
+			}
+
+		}
+
+		if ( materialDef.occlusionTexture !== undefined && materialType !== MeshBasicMaterial ) {
+
+			pending.push( parser.assignTexture( materialParams, 'aoMap', materialDef.occlusionTexture ) );
+
+			if ( materialDef.occlusionTexture.strength !== undefined ) {
+
+				materialParams.aoMapIntensity = materialDef.occlusionTexture.strength;
+
+			}
+
+		}
+
+		if ( materialDef.emissiveFactor !== undefined && materialType !== MeshBasicMaterial ) {
+
+			const emissiveFactor = materialDef.emissiveFactor;
+			materialParams.emissive = new Color().setRGB( emissiveFactor[ 0 ], emissiveFactor[ 1 ], emissiveFactor[ 2 ], LinearSRGBColorSpace );
+
+		}
+
+		if ( materialDef.emissiveTexture !== undefined && materialType !== MeshBasicMaterial ) {
+
+			pending.push( parser.assignTexture( materialParams, 'emissiveMap', materialDef.emissiveTexture, SRGBColorSpace ) );
+
+		}
+
+		return Promise.all( pending ).then( function () {
+
+			const material = new materialType( materialParams );
+
+			if ( materialDef.name ) material.name = materialDef.name;
+
+			assignExtrasToUserData( material, materialDef );
+
+			parser.associations.set( material, { materials: materialIndex } );
+
+			if ( materialDef.extensions ) addUnknownExtensionsToUserData( extensions, material, materialDef );
+
+			return material;
+
+		} );
+
+	}
+
+	/** When Object3D instances are targeted by animation, they need unique names. */
+	createUniqueName( originalName ) {
+
+		const sanitizedName = PropertyBinding.sanitizeNodeName( originalName || '' );
+
+		if ( sanitizedName in this.nodeNamesUsed ) {
+
+			return sanitizedName + '_' + ( ++ this.nodeNamesUsed[ sanitizedName ] );
+
+		} else {
+
+			this.nodeNamesUsed[ sanitizedName ] = 0;
+
+			return sanitizedName;
+
+		}
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#geometry
+	 *
+	 * Creates BufferGeometries from primitives.
+	 *
+	 * @param {Array<GLTF.Primitive>} primitives
+	 * @return {Promise<Array<BufferGeometry>>}
+	 */
+	loadGeometries( primitives ) {
+
+		const parser = this;
+		const extensions = this.extensions;
+		const cache = this.primitiveCache;
+
+		function createDracoPrimitive( primitive ) {
+
+			return extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ]
+				.decodePrimitive( primitive, parser )
+				.then( function ( geometry ) {
+
+					return addPrimitiveAttributes( geometry, primitive, parser );
+
+				} );
+
+		}
+
+		const pending = [];
+
+		for ( let i = 0, il = primitives.length; i < il; i ++ ) {
+
+			const primitive = primitives[ i ];
+			const cacheKey = createPrimitiveKey( primitive );
+
+			// See if we've already created this geometry
+			const cached = cache[ cacheKey ];
+
+			if ( cached ) {
+
+				// Use the cached geometry if it exists
+				pending.push( cached.promise );
+
+			} else {
+
+				let geometryPromise;
+
+				if ( primitive.extensions && primitive.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ] ) {
+
+					// Use DRACO geometry if available
+					geometryPromise = createDracoPrimitive( primitive );
+
+				} else {
+
+					// Otherwise create a new geometry
+					geometryPromise = addPrimitiveAttributes( new BufferGeometry(), primitive, parser );
+
+				}
+
+				// Cache this geometry
+				cache[ cacheKey ] = { primitive: primitive, promise: geometryPromise };
+
+				pending.push( geometryPromise );
+
+			}
+
+		}
+
+		return Promise.all( pending );
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#meshes
+	 * @param {number} meshIndex
+	 * @return {Promise<Group|Mesh|SkinnedMesh>}
+	 */
+	loadMesh( meshIndex ) {
+
+		const parser = this;
+		const json = this.json;
+		const extensions = this.extensions;
+
+		const meshDef = json.meshes[ meshIndex ];
+		const primitives = meshDef.primitives;
+
+		const pending = [];
+
+		for ( let i = 0, il = primitives.length; i < il; i ++ ) {
+
+			const material = primitives[ i ].material === undefined
+				? createDefaultMaterial( this.cache )
+				: this.getDependency( 'material', primitives[ i ].material );
+
+			pending.push( material );
+
+		}
+
+		pending.push( parser.loadGeometries( primitives ) );
+
+		return Promise.all( pending ).then( function ( results ) {
+
+			const materials = results.slice( 0, results.length - 1 );
+			const geometries = results[ results.length - 1 ];
+
+			const meshes = [];
+
+			for ( let i = 0, il = geometries.length; i < il; i ++ ) {
+
+				const geometry = geometries[ i ];
+				const primitive = primitives[ i ];
+
+				// 1. create Mesh
+
+				let mesh;
+
+				const material = materials[ i ];
+
+				if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLES ||
+						primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP ||
+						primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN ||
+						primitive.mode === undefined ) {
+
+					// .isSkinnedMesh isn't in glTF spec. See ._markDefs()
+					mesh = meshDef.isSkinnedMesh === true
+						? new SkinnedMesh( geometry, material )
+						: new Mesh( geometry, material );
+
+					if ( mesh.isSkinnedMesh === true ) {
+
+						// normalize skin weights to fix malformed assets (see #15319)
+						mesh.normalizeSkinWeights();
+
+					}
+
+					if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLE_STRIP ) {
+
+						mesh.geometry = toTrianglesDrawMode( mesh.geometry, TriangleStripDrawMode );
+
+					} else if ( primitive.mode === WEBGL_CONSTANTS.TRIANGLE_FAN ) {
+
+						mesh.geometry = toTrianglesDrawMode( mesh.geometry, TriangleFanDrawMode );
+
+					}
+
+				} else if ( primitive.mode === WEBGL_CONSTANTS.LINES ) {
+
+					mesh = new LineSegments( geometry, material );
+
+				} else if ( primitive.mode === WEBGL_CONSTANTS.LINE_STRIP ) {
+
+					mesh = new Line( geometry, material );
+
+				} else if ( primitive.mode === WEBGL_CONSTANTS.LINE_LOOP ) {
+
+					mesh = new LineLoop( geometry, material );
+
+				} else if ( primitive.mode === WEBGL_CONSTANTS.POINTS ) {
+
+					mesh = new Points( geometry, material );
+
+				} else {
+
+					throw new Error( 'THREE.GLTFLoader: Primitive mode unsupported: ' + primitive.mode );
+
+				}
+
+				if ( Object.keys( mesh.geometry.morphAttributes ).length > 0 ) {
+
+					updateMorphTargets( mesh, meshDef );
+
+				}
+
+				mesh.name = parser.createUniqueName( meshDef.name || ( 'mesh_' + meshIndex ) );
+
+				assignExtrasToUserData( mesh, meshDef );
+
+				if ( primitive.extensions ) addUnknownExtensionsToUserData( extensions, mesh, primitive );
+
+				parser.assignFinalMaterial( mesh );
+
+				meshes.push( mesh );
+
+			}
+
+			for ( let i = 0, il = meshes.length; i < il; i ++ ) {
+
+				parser.associations.set( meshes[ i ], {
+					meshes: meshIndex,
+					primitives: i
+				} );
+
+			}
+
+			if ( meshes.length === 1 ) {
+
+				if ( meshDef.extensions ) addUnknownExtensionsToUserData( extensions, meshes[ 0 ], meshDef );
+
+				return meshes[ 0 ];
+
+			}
+
+			const group = new Group();
+
+			if ( meshDef.extensions ) addUnknownExtensionsToUserData( extensions, group, meshDef );
+
+			parser.associations.set( group, { meshes: meshIndex } );
+
+			for ( let i = 0, il = meshes.length; i < il; i ++ ) {
+
+				group.add( meshes[ i ] );
+
+			}
+
+			return group;
+
+		} );
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#cameras
+	 * @param {number} cameraIndex
+	 * @return {Promise<THREE.Camera>}
+	 */
+	loadCamera( cameraIndex ) {
+
+		let camera;
+		const cameraDef = this.json.cameras[ cameraIndex ];
+		const params = cameraDef[ cameraDef.type ];
+
+		if ( ! params ) {
+
+			console.warn( 'THREE.GLTFLoader: Missing camera parameters.' );
+			return;
+
+		}
+
+		if ( cameraDef.type === 'perspective' ) {
+
+			camera = new PerspectiveCamera( MathUtils.radToDeg( params.yfov ), params.aspectRatio || 1, params.znear || 1, params.zfar || 2e6 );
+
+		} else if ( cameraDef.type === 'orthographic' ) {
+
+			camera = new OrthographicCamera( - params.xmag, params.xmag, params.ymag, - params.ymag, params.znear, params.zfar );
+
+		}
+
+		if ( cameraDef.name ) camera.name = this.createUniqueName( cameraDef.name );
+
+		assignExtrasToUserData( camera, cameraDef );
+
+		return Promise.resolve( camera );
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#skins
+	 * @param {number} skinIndex
+	 * @return {Promise<Skeleton>}
+	 */
+	loadSkin( skinIndex ) {
+
+		const skinDef = this.json.skins[ skinIndex ];
+
+		const pending = [];
+
+		for ( let i = 0, il = skinDef.joints.length; i < il; i ++ ) {
+
+			pending.push( this._loadNodeShallow( skinDef.joints[ i ] ) );
+
+		}
+
+		if ( skinDef.inverseBindMatrices !== undefined ) {
+
+			pending.push( this.getDependency( 'accessor', skinDef.inverseBindMatrices ) );
+
+		} else {
+
+			pending.push( null );
+
+		}
+
+		return Promise.all( pending ).then( function ( results ) {
+
+			const inverseBindMatrices = results.pop();
+			const jointNodes = results;
+
+			// Note that bones (joint nodes) may or may not be in the
+			// scene graph at this time.
+
+			const bones = [];
+			const boneInverses = [];
+
+			for ( let i = 0, il = jointNodes.length; i < il; i ++ ) {
+
+				const jointNode = jointNodes[ i ];
+
+				if ( jointNode ) {
+
+					bones.push( jointNode );
+
+					const mat = new Matrix4();
+
+					if ( inverseBindMatrices !== null ) {
+
+						mat.fromArray( inverseBindMatrices.array, i * 16 );
+
+					}
+
+					boneInverses.push( mat );
+
+				} else {
+
+					console.warn( 'THREE.GLTFLoader: Joint "%s" could not be found.', skinDef.joints[ i ] );
+
+				}
+
+			}
+
+			return new Skeleton( bones, boneInverses );
+
+		} );
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#animations
+	 * @param {number} animationIndex
+	 * @return {Promise<AnimationClip>}
+	 */
+	loadAnimation( animationIndex ) {
+
+		const json = this.json;
+		const parser = this;
+
+		const animationDef = json.animations[ animationIndex ];
+		const animationName = animationDef.name ? animationDef.name : 'animation_' + animationIndex;
+
+		const pendingNodes = [];
+		const pendingInputAccessors = [];
+		const pendingOutputAccessors = [];
+		const pendingSamplers = [];
+		const pendingTargets = [];
+
+		for ( let i = 0, il = animationDef.channels.length; i < il; i ++ ) {
+
+			const channel = animationDef.channels[ i ];
+			const sampler = animationDef.samplers[ channel.sampler ];
+			const target = channel.target;
+			const name = target.node;
+			const input = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.input ] : sampler.input;
+			const output = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.output ] : sampler.output;
+
+			if ( target.node === undefined ) continue;
+
+			pendingNodes.push( this.getDependency( 'node', name ) );
+			pendingInputAccessors.push( this.getDependency( 'accessor', input ) );
+			pendingOutputAccessors.push( this.getDependency( 'accessor', output ) );
+			pendingSamplers.push( sampler );
+			pendingTargets.push( target );
+
+		}
+
+		return Promise.all( [
+
+			Promise.all( pendingNodes ),
+			Promise.all( pendingInputAccessors ),
+			Promise.all( pendingOutputAccessors ),
+			Promise.all( pendingSamplers ),
+			Promise.all( pendingTargets )
+
+		] ).then( function ( dependencies ) {
+
+			const nodes = dependencies[ 0 ];
+			const inputAccessors = dependencies[ 1 ];
+			const outputAccessors = dependencies[ 2 ];
+			const samplers = dependencies[ 3 ];
+			const targets = dependencies[ 4 ];
+
+			const tracks = [];
+
+			for ( let i = 0, il = nodes.length; i < il; i ++ ) {
+
+				const node = nodes[ i ];
+				const inputAccessor = inputAccessors[ i ];
+				const outputAccessor = outputAccessors[ i ];
+				const sampler = samplers[ i ];
+				const target = targets[ i ];
+
+				if ( node === undefined ) continue;
+
+				if ( node.updateMatrix ) {
+
+					node.updateMatrix();
+
+				}
+
+				const createdTracks = parser._createAnimationTracks( node, inputAccessor, outputAccessor, sampler, target );
+
+				if ( createdTracks ) {
+
+					for ( let k = 0; k < createdTracks.length; k ++ ) {
+
+						tracks.push( createdTracks[ k ] );
+
+					}
+
+				}
+
+			}
+
+			return new AnimationClip( animationName, undefined, tracks );
+
+		} );
+
+	}
+
+	createNodeMesh( nodeIndex ) {
+
+		const json = this.json;
+		const parser = this;
+		const nodeDef = json.nodes[ nodeIndex ];
+
+		if ( nodeDef.mesh === undefined ) return null;
+
+		return parser.getDependency( 'mesh', nodeDef.mesh ).then( function ( mesh ) {
+
+			const node = parser._getNodeRef( parser.meshCache, nodeDef.mesh, mesh );
+
+			// if weights are provided on the node, override weights on the mesh.
+			if ( nodeDef.weights !== undefined ) {
+
+				node.traverse( function ( o ) {
+
+					if ( ! o.isMesh ) return;
+
+					for ( let i = 0, il = nodeDef.weights.length; i < il; i ++ ) {
+
+						o.morphTargetInfluences[ i ] = nodeDef.weights[ i ];
+
+					}
+
+				} );
+
+			}
+
+			return node;
+
+		} );
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#nodes-and-hierarchy
+	 * @param {number} nodeIndex
+	 * @return {Promise<Object3D>}
+	 */
+	loadNode( nodeIndex ) {
+
+		const json = this.json;
+		const parser = this;
+
+		const nodeDef = json.nodes[ nodeIndex ];
+
+		const nodePending = parser._loadNodeShallow( nodeIndex );
+
+		const childPending = [];
+		const childrenDef = nodeDef.children || [];
+
+		for ( let i = 0, il = childrenDef.length; i < il; i ++ ) {
+
+			childPending.push( parser.getDependency( 'node', childrenDef[ i ] ) );
+
+		}
+
+		const skeletonPending = nodeDef.skin === undefined
+			? Promise.resolve( null )
+			: parser.getDependency( 'skin', nodeDef.skin );
+
+		return Promise.all( [
+			nodePending,
+			Promise.all( childPending ),
+			skeletonPending
+		] ).then( function ( results ) {
+
+			const node = results[ 0 ];
+			const children = results[ 1 ];
+			const skeleton = results[ 2 ];
+
+			if ( skeleton !== null ) {
+
+				// This full traverse should be fine because
+				// child glTF nodes have not been added to this node yet.
+				node.traverse( function ( mesh ) {
+
+					if ( ! mesh.isSkinnedMesh ) return;
+
+					mesh.bind( skeleton, _identityMatrix );
+
+				} );
+
+			}
+
+			for ( let i = 0, il = children.length; i < il; i ++ ) {
+
+				node.add( children[ i ] );
+
+			}
+
+			return node;
+
+		} );
+
+	}
+
+	// ._loadNodeShallow() parses a single node.
+	// skin and child nodes are created and added in .loadNode() (no '_' prefix).
+	_loadNodeShallow( nodeIndex ) {
+
+		const json = this.json;
+		const extensions = this.extensions;
+		const parser = this;
+
+		// This method is called from .loadNode() and .loadSkin().
+		// Cache a node to avoid duplication.
+
+		if ( this.nodeCache[ nodeIndex ] !== undefined ) {
+
+			return this.nodeCache[ nodeIndex ];
+
+		}
+
+		const nodeDef = json.nodes[ nodeIndex ];
+
+		// reserve node's name before its dependencies, so the root has the intended name.
+		const nodeName = nodeDef.name ? parser.createUniqueName( nodeDef.name ) : '';
+
+		const pending = [];
+
+		const meshPromise = parser._invokeOne( function ( ext ) {
+
+			return ext.createNodeMesh && ext.createNodeMesh( nodeIndex );
+
+		} );
+
+		if ( meshPromise ) {
+
+			pending.push( meshPromise );
+
+		}
+
+		if ( nodeDef.camera !== undefined ) {
+
+			pending.push( parser.getDependency( 'camera', nodeDef.camera ).then( function ( camera ) {
+
+				return parser._getNodeRef( parser.cameraCache, nodeDef.camera, camera );
+
+			} ) );
+
+		}
+
+		parser._invokeAll( function ( ext ) {
+
+			return ext.createNodeAttachment && ext.createNodeAttachment( nodeIndex );
+
+		} ).forEach( function ( promise ) {
+
+			pending.push( promise );
+
+		} );
+
+		this.nodeCache[ nodeIndex ] = Promise.all( pending ).then( function ( objects ) {
+
+			let node;
+
+			// .isBone isn't in glTF spec. See ._markDefs
+			if ( nodeDef.isBone === true ) {
+
+				node = new Bone();
+
+			} else if ( objects.length > 1 ) {
+
+				node = new Group();
+
+			} else if ( objects.length === 1 ) {
+
+				node = objects[ 0 ];
+
+			} else {
+
+				node = new Object3D();
+
+			}
+
+			if ( node !== objects[ 0 ] ) {
+
+				for ( let i = 0, il = objects.length; i < il; i ++ ) {
+
+					node.add( objects[ i ] );
+
+				}
+
+			}
+
+			if ( nodeDef.name ) {
+
+				node.userData.name = nodeDef.name;
+				node.name = nodeName;
+
+			}
+
+			assignExtrasToUserData( node, nodeDef );
+
+			if ( nodeDef.extensions ) addUnknownExtensionsToUserData( extensions, node, nodeDef );
+
+			if ( nodeDef.matrix !== undefined ) {
+
+				const matrix = new Matrix4();
+				matrix.fromArray( nodeDef.matrix );
+				node.applyMatrix4( matrix );
+
+			} else {
+
+				if ( nodeDef.translation !== undefined ) {
+
+					node.position.fromArray( nodeDef.translation );
+
+				}
+
+				if ( nodeDef.rotation !== undefined ) {
+
+					node.quaternion.fromArray( nodeDef.rotation );
+
+				}
+
+				if ( nodeDef.scale !== undefined ) {
+
+					node.scale.fromArray( nodeDef.scale );
+
+				}
+
+			}
+
+			if ( ! parser.associations.has( node ) ) {
+
+				parser.associations.set( node, {} );
+
+			}
+
+			parser.associations.get( node ).nodes = nodeIndex;
+
+			return node;
+
+		} );
+
+		return this.nodeCache[ nodeIndex ];
+
+	}
+
+	/**
+	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#scenes
+	 * @param {number} sceneIndex
+	 * @return {Promise<Group>}
+	 */
+	loadScene( sceneIndex ) {
+
+		const extensions = this.extensions;
+		const sceneDef = this.json.scenes[ sceneIndex ];
+		const parser = this;
+
+		// Loader returns Group, not Scene.
+		// See: https://github.com/mrdoob/three.js/issues/18342#issuecomment-578981172
+		const scene = new Group();
+		if ( sceneDef.name ) scene.name = parser.createUniqueName( sceneDef.name );
+
+		assignExtrasToUserData( scene, sceneDef );
+
+		if ( sceneDef.extensions ) addUnknownExtensionsToUserData( extensions, scene, sceneDef );
+
+		const nodeIds = sceneDef.nodes || [];
+
+		const pending = [];
+
+		for ( let i = 0, il = nodeIds.length; i < il; i ++ ) {
+
+			pending.push( parser.getDependency( 'node', nodeIds[ i ] ) );
+
+		}
+
+		return Promise.all( pending ).then( function ( nodes ) {
+
+			for ( let i = 0, il = nodes.length; i < il; i ++ ) {
+
+				scene.add( nodes[ i ] );
+
+			}
+
+			// Removes dangling associations, associations that reference a node that
+			// didn't make it into the scene.
+			const reduceAssociations = ( node ) => {
+
+				const reducedAssociations = new Map();
+
+				for ( const [ key, value ] of parser.associations ) {
+
+					if ( key instanceof Material || key instanceof Texture ) {
+
+						reducedAssociations.set( key, value );
+
+					}
+
+				}
+
+				node.traverse( ( node ) => {
+
+					const mappings = parser.associations.get( node );
+
+					if ( mappings != null ) {
+
+						reducedAssociations.set( node, mappings );
+
+					}
+
+				} );
+
+				return reducedAssociations;
+
+			};
+
+			parser.associations = reduceAssociations( scene );
+
+			return scene;
+
+		} );
+
+	}
+
+	_createAnimationTracks( node, inputAccessor, outputAccessor, sampler, target ) {
+
+		const tracks = [];
+
+		const targetName = node.name ? node.name : node.uuid;
+		const targetNames = [];
+
+		if ( PATH_PROPERTIES[ target.path ] === PATH_PROPERTIES.weights ) {
+
+			node.traverse( function ( object ) {
+
+				if ( object.morphTargetInfluences ) {
+
+					targetNames.push( object.name ? object.name : object.uuid );
+
+				}
+
+			} );
+
+		} else {
+
+			targetNames.push( targetName );
+
+		}
+
+		let TypedKeyframeTrack;
+
+		switch ( PATH_PROPERTIES[ target.path ] ) {
+
+			case PATH_PROPERTIES.weights:
+
+				TypedKeyframeTrack = NumberKeyframeTrack;
+				break;
+
+			case PATH_PROPERTIES.rotation:
+
+				TypedKeyframeTrack = QuaternionKeyframeTrack;
+				break;
+
+			case PATH_PROPERTIES.position:
+			case PATH_PROPERTIES.scale:
+
+				TypedKeyframeTrack = VectorKeyframeTrack;
+				break;
+
+			default:
+
+				switch ( outputAccessor.itemSize ) {
+
+					case 1:
+						TypedKeyframeTrack = NumberKeyframeTrack;
+						break;
+					case 2:
+					case 3:
+					default:
+						TypedKeyframeTrack = VectorKeyframeTrack;
+						break;
+
+				}
+
+				break;
+
+		}
+
+		const interpolation = sampler.interpolation !== undefined ? INTERPOLATION[ sampler.interpolation ] : InterpolateLinear;
+
+
+		const outputArray = this._getArrayFromAccessor( outputAccessor );
+
+		for ( let j = 0, jl = targetNames.length; j < jl; j ++ ) {
+
+			const track = new TypedKeyframeTrack(
+				targetNames[ j ] + '.' + PATH_PROPERTIES[ target.path ],
+				inputAccessor.array,
+				outputArray,
+				interpolation
+			);
+
+			// Override interpolation with custom factory method.
+			if ( sampler.interpolation === 'CUBICSPLINE' ) {
+
+				this._createCubicSplineTrackInterpolant( track );
+
+			}
+
+			tracks.push( track );
+
+		}
+
+		return tracks;
+
+	}
+
+	_getArrayFromAccessor( accessor ) {
+
+		let outputArray = accessor.array;
+
+		if ( accessor.normalized ) {
+
+			const scale = getNormalizedComponentScale( outputArray.constructor );
+			const scaled = new Float32Array( outputArray.length );
+
+			for ( let j = 0, jl = outputArray.length; j < jl; j ++ ) {
+
+				scaled[ j ] = outputArray[ j ] * scale;
+
+			}
+
+			outputArray = scaled;
+
+		}
+
+		return outputArray;
+
+	}
+
+	_createCubicSplineTrackInterpolant( track ) {
+
+		track.createInterpolant = function InterpolantFactoryMethodGLTFCubicSpline( result ) {
+
+			// A CUBICSPLINE keyframe in glTF has three output values for each input value,
+			// representing inTangent, splineVertex, and outTangent. As a result, track.getValueSize()
+			// must be divided by three to get the interpolant's sampleSize argument.
+
+			const interpolantType = ( this instanceof QuaternionKeyframeTrack ) ? GLTFCubicSplineQuaternionInterpolant : GLTFCubicSplineInterpolant;
+
+			return new interpolantType( this.times, this.values, this.getValueSize() / 3, result );
+
+		};
+
+		// Mark as CUBICSPLINE. `track.getInterpolation()` doesn't support custom interpolants.
+		track.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline = true;
+
+	}
+
+}
+
+/**
+ * @param {BufferGeometry} geometry
+ * @param {GLTF.Primitive} primitiveDef
+ * @param {GLTFParser} parser
+ */
+function computeBounds( geometry, primitiveDef, parser ) {
+
+	const attributes = primitiveDef.attributes;
+
+	const box = new Box3();
+
+	if ( attributes.POSITION !== undefined ) {
+
+		const accessor = parser.json.accessors[ attributes.POSITION ];
+
+		const min = accessor.min;
+		const max = accessor.max;
+
+		// glTF requires 'min' and 'max', but VRM (which extends glTF) currently ignores that requirement.
+
+		if ( min !== undefined && max !== undefined ) {
+
+			box.set(
+				new Vector3( min[ 0 ], min[ 1 ], min[ 2 ] ),
+				new Vector3( max[ 0 ], max[ 1 ], max[ 2 ] )
+			);
+
+			if ( accessor.normalized ) {
+
+				const boxScale = getNormalizedComponentScale( WEBGL_COMPONENT_TYPES[ accessor.componentType ] );
+				box.min.multiplyScalar( boxScale );
+				box.max.multiplyScalar( boxScale );
+
+			}
+
+		} else {
+
+			console.warn( 'THREE.GLTFLoader: Missing min/max properties for accessor POSITION.' );
+
+			return;
+
+		}
+
+	} else {
+
+		return;
+
+	}
+
+	const targets = primitiveDef.targets;
+
+	if ( targets !== undefined ) {
+
+		const maxDisplacement = new Vector3();
+		const vector = new Vector3();
+
+		for ( let i = 0, il = targets.length; i < il; i ++ ) {
+
+			const target = targets[ i ];
+
+			if ( target.POSITION !== undefined ) {
+
+				const accessor = parser.json.accessors[ target.POSITION ];
+				const min = accessor.min;
+				const max = accessor.max;
+
+				// glTF requires 'min' and 'max', but VRM (which extends glTF) currently ignores that requirement.
+
+				if ( min !== undefined && max !== undefined ) {
+
+					// we need to get max of absolute components because target weight is [-1,1]
+					vector.setX( Math.max( Math.abs( min[ 0 ] ), Math.abs( max[ 0 ] ) ) );
+					vector.setY( Math.max( Math.abs( min[ 1 ] ), Math.abs( max[ 1 ] ) ) );
+					vector.setZ( Math.max( Math.abs( min[ 2 ] ), Math.abs( max[ 2 ] ) ) );
+
+
+					if ( accessor.normalized ) {
+
+						const boxScale = getNormalizedComponentScale( WEBGL_COMPONENT_TYPES[ accessor.componentType ] );
+						vector.multiplyScalar( boxScale );
+
+					}
+
+					// Note: this assumes that the sum of all weights is at most 1. This isn't quite correct - it's more conservative
+					// to assume that each target can have a max weight of 1. However, for some use cases - notably, when morph targets
+					// are used to implement key-frame animations and as such only two are active at a time - this results in very large
+					// boxes. So for now we make a box that's sometimes a touch too small but is hopefully mostly of reasonable size.
+					maxDisplacement.max( vector );
+
+				} else {
+
+					console.warn( 'THREE.GLTFLoader: Missing min/max properties for accessor POSITION.' );
+
+				}
+
+			}
+
+		}
+
+		// As per comment above this box isn't conservative, but has a reasonable size for a very large number of morph targets.
+		box.expandByVector( maxDisplacement );
+
+	}
+
+	geometry.boundingBox = box;
+
+	const sphere = new Sphere();
+
+	box.getCenter( sphere.center );
+	sphere.radius = box.min.distanceTo( box.max ) / 2;
+
+	geometry.boundingSphere = sphere;
+
+}
+
+/**
+ * @param {BufferGeometry} geometry
+ * @param {GLTF.Primitive} primitiveDef
+ * @param {GLTFParser} parser
+ * @return {Promise<BufferGeometry>}
+ */
+function addPrimitiveAttributes( geometry, primitiveDef, parser ) {
+
+	const attributes = primitiveDef.attributes;
+
+	const pending = [];
+
+	function assignAttributeAccessor( accessorIndex, attributeName ) {
+
+		return parser.getDependency( 'accessor', accessorIndex )
+			.then( function ( accessor ) {
+
+				geometry.setAttribute( attributeName, accessor );
+
+			} );
+
+	}
+
+	for ( const gltfAttributeName in attributes ) {
+
+		const threeAttributeName = ATTRIBUTES[ gltfAttributeName ] || gltfAttributeName.toLowerCase();
+
+		// Skip attributes already provided by e.g. Draco extension.
+		if ( threeAttributeName in geometry.attributes ) continue;
+
+		pending.push( assignAttributeAccessor( attributes[ gltfAttributeName ], threeAttributeName ) );
+
+	}
+
+	if ( primitiveDef.indices !== undefined && ! geometry.index ) {
+
+		const accessor = parser.getDependency( 'accessor', primitiveDef.indices ).then( function ( accessor ) {
+
+			geometry.setIndex( accessor );
+
+		} );
+
+		pending.push( accessor );
+
+	}
+
+	if ( ColorManagement.workingColorSpace !== LinearSRGBColorSpace && 'COLOR_0' in attributes ) {
+
+		console.warn( `THREE.GLTFLoader: Converting vertex colors from "srgb-linear" to "${ColorManagement.workingColorSpace}" not supported.` );
+
+	}
+
+	assignExtrasToUserData( geometry, primitiveDef );
+
+	computeBounds( geometry, primitiveDef, parser );
+
+	return Promise.all( pending ).then( function () {
+
+		return primitiveDef.targets !== undefined
+			? addMorphTargets( geometry, primitiveDef.targets, parser )
+			: geometry;
+
+	} );
+
+}
+
+export { GLTFLoader };
diff --git a/web/vendor/three/three.module.js b/web/vendor/three/three.module.js
new file mode 100644
index 0000000..99b665f
--- /dev/null
+++ b/web/vendor/three/three.module.js
@@ -0,0 +1,53917 @@
+/**
+ * @license
+ * Copyright 2010-2024 Three.js Authors
+ * SPDX-License-Identifier: MIT
+ */
+const REVISION = '168';
+
+const MOUSE = { LEFT: 0, MIDDLE: 1, RIGHT: 2, ROTATE: 0, DOLLY: 1, PAN: 2 };
+const TOUCH = { ROTATE: 0, PAN: 1, DOLLY_PAN: 2, DOLLY_ROTATE: 3 };
+const CullFaceNone = 0;
+const CullFaceBack = 1;
+const CullFaceFront = 2;
+const CullFaceFrontBack = 3;
+const BasicShadowMap = 0;
+const PCFShadowMap = 1;
+const PCFSoftShadowMap = 2;
+const VSMShadowMap = 3;
+const FrontSide = 0;
+const BackSide = 1;
+const DoubleSide = 2;
+const NoBlending = 0;
+const NormalBlending = 1;
+const AdditiveBlending = 2;
+const SubtractiveBlending = 3;
+const MultiplyBlending = 4;
+const CustomBlending = 5;
+const AddEquation = 100;
+const SubtractEquation = 101;
+const ReverseSubtractEquation = 102;
+const MinEquation = 103;
+const MaxEquation = 104;
+const ZeroFactor = 200;
+const OneFactor = 201;
+const SrcColorFactor = 202;
+const OneMinusSrcColorFactor = 203;
+const SrcAlphaFactor = 204;
+const OneMinusSrcAlphaFactor = 205;
+const DstAlphaFactor = 206;
+const OneMinusDstAlphaFactor = 207;
+const DstColorFactor = 208;
+const OneMinusDstColorFactor = 209;
+const SrcAlphaSaturateFactor = 210;
+const ConstantColorFactor = 211;
+const OneMinusConstantColorFactor = 212;
+const ConstantAlphaFactor = 213;
+const OneMinusConstantAlphaFactor = 214;
+const NeverDepth = 0;
+const AlwaysDepth = 1;
+const LessDepth = 2;
+const LessEqualDepth = 3;
+const EqualDepth = 4;
+const GreaterEqualDepth = 5;
+const GreaterDepth = 6;
+const NotEqualDepth = 7;
+const MultiplyOperation = 0;
+const MixOperation = 1;
+const AddOperation = 2;
+const NoToneMapping = 0;
+const LinearToneMapping = 1;
+const ReinhardToneMapping = 2;
+const CineonToneMapping = 3;
+const ACESFilmicToneMapping = 4;
+const CustomToneMapping = 5;
+const AgXToneMapping = 6;
+const NeutralToneMapping = 7;
+const AttachedBindMode = 'attached';
+const DetachedBindMode = 'detached';
+
+const UVMapping = 300;
+const CubeReflectionMapping = 301;
+const CubeRefractionMapping = 302;
+const EquirectangularReflectionMapping = 303;
+const EquirectangularRefractionMapping = 304;
+const CubeUVReflectionMapping = 306;
+const RepeatWrapping = 1000;
+const ClampToEdgeWrapping = 1001;
+const MirroredRepeatWrapping = 1002;
+const NearestFilter = 1003;
+const NearestMipmapNearestFilter = 1004;
+const NearestMipMapNearestFilter = 1004;
+const NearestMipmapLinearFilter = 1005;
+const NearestMipMapLinearFilter = 1005;
+const LinearFilter = 1006;
+const LinearMipmapNearestFilter = 1007;
+const LinearMipMapNearestFilter = 1007;
+const LinearMipmapLinearFilter = 1008;
+const LinearMipMapLinearFilter = 1008;
+const UnsignedByteType = 1009;
+const ByteType = 1010;
+const ShortType = 1011;
+const UnsignedShortType = 1012;
+const IntType = 1013;
+const UnsignedIntType = 1014;
+const FloatType = 1015;
+const HalfFloatType = 1016;
+const UnsignedShort4444Type = 1017;
+const UnsignedShort5551Type = 1018;
+const UnsignedInt248Type = 1020;
+const UnsignedInt5999Type = 35902;
+const AlphaFormat = 1021;
+const RGBFormat = 1022;
+const RGBAFormat = 1023;
+const LuminanceFormat = 1024;
+const LuminanceAlphaFormat = 1025;
+const DepthFormat = 1026;
+const DepthStencilFormat = 1027;
+const RedFormat = 1028;
+const RedIntegerFormat = 1029;
+const RGFormat = 1030;
+const RGIntegerFormat = 1031;
+const RGBIntegerFormat = 1032;
+const RGBAIntegerFormat = 1033;
+
+const RGB_S3TC_DXT1_Format = 33776;
+const RGBA_S3TC_DXT1_Format = 33777;
+const RGBA_S3TC_DXT3_Format = 33778;
+const RGBA_S3TC_DXT5_Format = 33779;
+const RGB_PVRTC_4BPPV1_Format = 35840;
+const RGB_PVRTC_2BPPV1_Format = 35841;
+const RGBA_PVRTC_4BPPV1_Format = 35842;
+const RGBA_PVRTC_2BPPV1_Format = 35843;
+const RGB_ETC1_Format = 36196;
+const RGB_ETC2_Format = 37492;
+const RGBA_ETC2_EAC_Format = 37496;
+const RGBA_ASTC_4x4_Format = 37808;
+const RGBA_ASTC_5x4_Format = 37809;
+const RGBA_ASTC_5x5_Format = 37810;
+const RGBA_ASTC_6x5_Format = 37811;
+const RGBA_ASTC_6x6_Format = 37812;
+const RGBA_ASTC_8x5_Format = 37813;
+const RGBA_ASTC_8x6_Format = 37814;
+const RGBA_ASTC_8x8_Format = 37815;
+const RGBA_ASTC_10x5_Format = 37816;
+const RGBA_ASTC_10x6_Format = 37817;
+const RGBA_ASTC_10x8_Format = 37818;
+const RGBA_ASTC_10x10_Format = 37819;
+const RGBA_ASTC_12x10_Format = 37820;
+const RGBA_ASTC_12x12_Format = 37821;
+const RGBA_BPTC_Format = 36492;
+const RGB_BPTC_SIGNED_Format = 36494;
+const RGB_BPTC_UNSIGNED_Format = 36495;
+const RED_RGTC1_Format = 36283;
+const SIGNED_RED_RGTC1_Format = 36284;
+const RED_GREEN_RGTC2_Format = 36285;
+const SIGNED_RED_GREEN_RGTC2_Format = 36286;
+const LoopOnce = 2200;
+const LoopRepeat = 2201;
+const LoopPingPong = 2202;
+const InterpolateDiscrete = 2300;
+const InterpolateLinear = 2301;
+const InterpolateSmooth = 2302;
+const ZeroCurvatureEnding = 2400;
+const ZeroSlopeEnding = 2401;
+const WrapAroundEnding = 2402;
+const NormalAnimationBlendMode = 2500;
+const AdditiveAnimationBlendMode = 2501;
+const TrianglesDrawMode = 0;
+const TriangleStripDrawMode = 1;
+const TriangleFanDrawMode = 2;
+const BasicDepthPacking = 3200;
+const RGBADepthPacking = 3201;
+const RGBDepthPacking = 3202;
+const RGDepthPacking = 3203;
+const TangentSpaceNormalMap = 0;
+const ObjectSpaceNormalMap = 1;
+
+// Color space string identifiers, matching CSS Color Module Level 4 and WebGPU names where available.
+const NoColorSpace = '';
+const SRGBColorSpace = 'srgb';
+const LinearSRGBColorSpace = 'srgb-linear';
+const DisplayP3ColorSpace = 'display-p3';
+const LinearDisplayP3ColorSpace = 'display-p3-linear';
+
+const LinearTransfer = 'linear';
+const SRGBTransfer = 'srgb';
+
+const Rec709Primaries = 'rec709';
+const P3Primaries = 'p3';
+
+const ZeroStencilOp = 0;
+const KeepStencilOp = 7680;
+const ReplaceStencilOp = 7681;
+const IncrementStencilOp = 7682;
+const DecrementStencilOp = 7683;
+const IncrementWrapStencilOp = 34055;
+const DecrementWrapStencilOp = 34056;
+const InvertStencilOp = 5386;
+
+const NeverStencilFunc = 512;
+const LessStencilFunc = 513;
+const EqualStencilFunc = 514;
+const LessEqualStencilFunc = 515;
+const GreaterStencilFunc = 516;
+const NotEqualStencilFunc = 517;
+const GreaterEqualStencilFunc = 518;
+const AlwaysStencilFunc = 519;
+
+const NeverCompare = 512;
+const LessCompare = 513;
+const EqualCompare = 514;
+const LessEqualCompare = 515;
+const GreaterCompare = 516;
+const NotEqualCompare = 517;
+const GreaterEqualCompare = 518;
+const AlwaysCompare = 519;
+
+const StaticDrawUsage = 35044;
+const DynamicDrawUsage = 35048;
+const StreamDrawUsage = 35040;
+const StaticReadUsage = 35045;
+const DynamicReadUsage = 35049;
+const StreamReadUsage = 35041;
+const StaticCopyUsage = 35046;
+const DynamicCopyUsage = 35050;
+const StreamCopyUsage = 35042;
+
+const GLSL1 = '100';
+const GLSL3 = '300 es';
+
+const WebGLCoordinateSystem = 2000;
+const WebGPUCoordinateSystem = 2001;
+
+/**
+ * https://github.com/mrdoob/eventdispatcher.js/
+ */
+
+class EventDispatcher {
+
+	addEventListener( type, listener ) {
+
+		if ( this._listeners === undefined ) this._listeners = {};
+
+		const listeners = this._listeners;
+
+		if ( listeners[ type ] === undefined ) {
+
+			listeners[ type ] = [];
+
+		}
+
+		if ( listeners[ type ].indexOf( listener ) === - 1 ) {
+
+			listeners[ type ].push( listener );
+
+		}
+
+	}
+
+	hasEventListener( type, listener ) {
+
+		if ( this._listeners === undefined ) return false;
+
+		const listeners = this._listeners;
+
+		return listeners[ type ] !== undefined && listeners[ type ].indexOf( listener ) !== - 1;
+
+	}
+
+	removeEventListener( type, listener ) {
+
+		if ( this._listeners === undefined ) return;
+
+		const listeners = this._listeners;
+		const listenerArray = listeners[ type ];
+
+		if ( listenerArray !== undefined ) {
+
+			const index = listenerArray.indexOf( listener );
+
+			if ( index !== - 1 ) {
+
+				listenerArray.splice( index, 1 );
+
+			}
+
+		}
+
+	}
+
+	dispatchEvent( event ) {
+
+		if ( this._listeners === undefined ) return;
+
+		const listeners = this._listeners;
+		const listenerArray = listeners[ event.type ];
+
+		if ( listenerArray !== undefined ) {
+
+			event.target = this;
+
+			// Make a copy, in case listeners are removed while iterating.
+			const array = listenerArray.slice( 0 );
+
+			for ( let i = 0, l = array.length; i < l; i ++ ) {
+
+				array[ i ].call( this, event );
+
+			}
+
+			event.target = null;
+
+		}
+
+	}
+
+}
+
+const _lut = [ '00', '01', '02', '03', '04', '05', '06', '07', '08', '09', '0a', '0b', '0c', '0d', '0e', '0f', '10', '11', '12', '13', '14', '15', '16', '17', '18', '19', '1a', '1b', '1c', '1d', '1e', '1f', '20', '21', '22', '23', '24', '25', '26', '27', '28', '29', '2a', '2b', '2c', '2d', '2e', '2f', '30', '31', '32', '33', '34', '35', '36', '37', '38', '39', '3a', '3b', '3c', '3d', '3e', '3f', '40', '41', '42', '43', '44', '45', '46', '47', '48', '49', '4a', '4b', '4c', '4d', '4e', '4f', '50', '51', '52', '53', '54', '55', '56', '57', '58', '59', '5a', '5b', '5c', '5d', '5e', '5f', '60', '61', '62', '63', '64', '65', '66', '67', '68', '69', '6a', '6b', '6c', '6d', '6e', '6f', '70', '71', '72', '73', '74', '75', '76', '77', '78', '79', '7a', '7b', '7c', '7d', '7e', '7f', '80', '81', '82', '83', '84', '85', '86', '87', '88', '89', '8a', '8b', '8c', '8d', '8e', '8f', '90', '91', '92', '93', '94', '95', '96', '97', '98', '99', '9a', '9b', '9c', '9d', '9e', '9f', 'a0', 'a1', 'a2', 'a3', 'a4', 'a5', 'a6', 'a7', 'a8', 'a9', 'aa', 'ab', 'ac', 'ad', 'ae', 'af', 'b0', 'b1', 'b2', 'b3', 'b4', 'b5', 'b6', 'b7', 'b8', 'b9', 'ba', 'bb', 'bc', 'bd', 'be', 'bf', 'c0', 'c1', 'c2', 'c3', 'c4', 'c5', 'c6', 'c7', 'c8', 'c9', 'ca', 'cb', 'cc', 'cd', 'ce', 'cf', 'd0', 'd1', 'd2', 'd3', 'd4', 'd5', 'd6', 'd7', 'd8', 'd9', 'da', 'db', 'dc', 'dd', 'de', 'df', 'e0', 'e1', 'e2', 'e3', 'e4', 'e5', 'e6', 'e7', 'e8', 'e9', 'ea', 'eb', 'ec', 'ed', 'ee', 'ef', 'f0', 'f1', 'f2', 'f3', 'f4', 'f5', 'f6', 'f7', 'f8', 'f9', 'fa', 'fb', 'fc', 'fd', 'fe', 'ff' ];
+
+let _seed = 1234567;
+
+
+const DEG2RAD = Math.PI / 180;
+const RAD2DEG = 180 / Math.PI;
+
+// http://stackoverflow.com/questions/105034/how-to-create-a-guid-uuid-in-javascript/21963136#21963136
+function generateUUID() {
+
+	const d0 = Math.random() * 0xffffffff | 0;
+	const d1 = Math.random() * 0xffffffff | 0;
+	const d2 = Math.random() * 0xffffffff | 0;
+	const d3 = Math.random() * 0xffffffff | 0;
+	const uuid = _lut[ d0 & 0xff ] + _lut[ d0 >> 8 & 0xff ] + _lut[ d0 >> 16 & 0xff ] + _lut[ d0 >> 24 & 0xff ] + '-' +
+			_lut[ d1 & 0xff ] + _lut[ d1 >> 8 & 0xff ] + '-' + _lut[ d1 >> 16 & 0x0f | 0x40 ] + _lut[ d1 >> 24 & 0xff ] + '-' +
+			_lut[ d2 & 0x3f | 0x80 ] + _lut[ d2 >> 8 & 0xff ] + '-' + _lut[ d2 >> 16 & 0xff ] + _lut[ d2 >> 24 & 0xff ] +
+			_lut[ d3 & 0xff ] + _lut[ d3 >> 8 & 0xff ] + _lut[ d3 >> 16 & 0xff ] + _lut[ d3 >> 24 & 0xff ];
+
+	// .toLowerCase() here flattens concatenated strings to save heap memory space.
+	return uuid.toLowerCase();
+
+}
+
+function clamp( value, min, max ) {
+
+	return Math.max( min, Math.min( max, value ) );
+
+}
+
+// compute euclidean modulo of m % n
+// https://en.wikipedia.org/wiki/Modulo_operation
+function euclideanModulo( n, m ) {
+
+	return ( ( n % m ) + m ) % m;
+
+}
+
+// Linear mapping from range <a1, a2> to range <b1, b2>
+function mapLinear( x, a1, a2, b1, b2 ) {
+
+	return b1 + ( x - a1 ) * ( b2 - b1 ) / ( a2 - a1 );
+
+}
+
+// https://www.gamedev.net/tutorials/programming/general-and-gameplay-programming/inverse-lerp-a-super-useful-yet-often-overlooked-function-r5230/
+function inverseLerp( x, y, value ) {
+
+	if ( x !== y ) {
+
+		return ( value - x ) / ( y - x );
+
+	} else {
+
+		return 0;
+
+	}
+
+}
+
+// https://en.wikipedia.org/wiki/Linear_interpolation
+function lerp( x, y, t ) {
+
+	return ( 1 - t ) * x + t * y;
+
+}
+
+// http://www.rorydriscoll.com/2016/03/07/frame-rate-independent-damping-using-lerp/
+function damp( x, y, lambda, dt ) {
+
+	return lerp( x, y, 1 - Math.exp( - lambda * dt ) );
+
+}
+
+// https://www.desmos.com/calculator/vcsjnyz7x4
+function pingpong( x, length = 1 ) {
+
+	return length - Math.abs( euclideanModulo( x, length * 2 ) - length );
+
+}
+
+// http://en.wikipedia.org/wiki/Smoothstep
+function smoothstep( x, min, max ) {
+
+	if ( x <= min ) return 0;
+	if ( x >= max ) return 1;
+
+	x = ( x - min ) / ( max - min );
+
+	return x * x * ( 3 - 2 * x );
+
+}
+
+function smootherstep( x, min, max ) {
+
+	if ( x <= min ) return 0;
+	if ( x >= max ) return 1;
+
+	x = ( x - min ) / ( max - min );
+
+	return x * x * x * ( x * ( x * 6 - 15 ) + 10 );
+
+}
+
+// Random integer from <low, high> interval
+function randInt( low, high ) {
+
+	return low + Math.floor( Math.random() * ( high - low + 1 ) );
+
+}
+
+// Random float from <low, high> interval
+function randFloat( low, high ) {
+
+	return low + Math.random() * ( high - low );
+
+}
+
+// Random float from <-range/2, range/2> interval
+function randFloatSpread( range ) {
+
+	return range * ( 0.5 - Math.random() );
+
+}
+
+// Deterministic pseudo-random float in the interval [ 0, 1 ]
+function seededRandom( s ) {
+
+	if ( s !== undefined ) _seed = s;
+
+	// Mulberry32 generator
+
+	let t = _seed += 0x6D2B79F5;
+
+	t = Math.imul( t ^ t >>> 15, t | 1 );
+
+	t ^= t + Math.imul( t ^ t >>> 7, t | 61 );
+
+	return ( ( t ^ t >>> 14 ) >>> 0 ) / 4294967296;
+
+}
+
+function degToRad( degrees ) {
+
+	return degrees * DEG2RAD;
+
+}
+
+function radToDeg( radians ) {
+
+	return radians * RAD2DEG;
+
+}
+
+function isPowerOfTwo( value ) {
+
+	return ( value & ( value - 1 ) ) === 0 && value !== 0;
+
+}
+
+function ceilPowerOfTwo( value ) {
+
+	return Math.pow( 2, Math.ceil( Math.log( value ) / Math.LN2 ) );
+
+}
+
+function floorPowerOfTwo( value ) {
+
+	return Math.pow( 2, Math.floor( Math.log( value ) / Math.LN2 ) );
+
+}
+
+function setQuaternionFromProperEuler( q, a, b, c, order ) {
+
+	// Intrinsic Proper Euler Angles - see https://en.wikipedia.org/wiki/Euler_angles
+
+	// rotations are applied to the axes in the order specified by 'order'
+	// rotation by angle 'a' is applied first, then by angle 'b', then by angle 'c'
+	// angles are in radians
+
+	const cos = Math.cos;
+	const sin = Math.sin;
+
+	const c2 = cos( b / 2 );
+	const s2 = sin( b / 2 );
+
+	const c13 = cos( ( a + c ) / 2 );
+	const s13 = sin( ( a + c ) / 2 );
+
+	const c1_3 = cos( ( a - c ) / 2 );
+	const s1_3 = sin( ( a - c ) / 2 );
+
+	const c3_1 = cos( ( c - a ) / 2 );
+	const s3_1 = sin( ( c - a ) / 2 );
+
+	switch ( order ) {
+
+		case 'XYX':
+			q.set( c2 * s13, s2 * c1_3, s2 * s1_3, c2 * c13 );
+			break;
+
+		case 'YZY':
+			q.set( s2 * s1_3, c2 * s13, s2 * c1_3, c2 * c13 );
+			break;
+
+		case 'ZXZ':
+			q.set( s2 * c1_3, s2 * s1_3, c2 * s13, c2 * c13 );
+			break;
+
+		case 'XZX':
+			q.set( c2 * s13, s2 * s3_1, s2 * c3_1, c2 * c13 );
+			break;
+
+		case 'YXY':
+			q.set( s2 * c3_1, c2 * s13, s2 * s3_1, c2 * c13 );
+			break;
+
+		case 'ZYZ':
+			q.set( s2 * s3_1, s2 * c3_1, c2 * s13, c2 * c13 );
+			break;
+
+		default:
+			console.warn( 'THREE.MathUtils: .setQuaternionFromProperEuler() encountered an unknown order: ' + order );
+
+	}
+
+}
+
+function denormalize( value, array ) {
+
+	switch ( array.constructor ) {
+
+		case Float32Array:
+
+			return value;
+
+		case Uint32Array:
+
+			return value / 4294967295.0;
+
+		case Uint16Array:
+
+			return value / 65535.0;
+
+		case Uint8Array:
+
+			return value / 255.0;
+
+		case Int32Array:
+
+			return Math.max( value / 2147483647.0, - 1.0 );
+
+		case Int16Array:
+
+			return Math.max( value / 32767.0, - 1.0 );
+
+		case Int8Array:
+
+			return Math.max( value / 127.0, - 1.0 );
+
+		default:
+
+			throw new Error( 'Invalid component type.' );
+
+	}
+
+}
+
+function normalize( value, array ) {
+
+	switch ( array.constructor ) {
+
+		case Float32Array:
+
+			return value;
+
+		case Uint32Array:
+
+			return Math.round( value * 4294967295.0 );
+
+		case Uint16Array:
+
+			return Math.round( value * 65535.0 );
+
+		case Uint8Array:
+
+			return Math.round( value * 255.0 );
+
+		case Int32Array:
+
+			return Math.round( value * 2147483647.0 );
+
+		case Int16Array:
+
+			return Math.round( value * 32767.0 );
+
+		case Int8Array:
+
+			return Math.round( value * 127.0 );
+
+		default:
+
+			throw new Error( 'Invalid component type.' );
+
+	}
+
+}
+
+const MathUtils = {
+	DEG2RAD: DEG2RAD,
+	RAD2DEG: RAD2DEG,
+	generateUUID: generateUUID,
+	clamp: clamp,
+	euclideanModulo: euclideanModulo,
+	mapLinear: mapLinear,
+	inverseLerp: inverseLerp,
+	lerp: lerp,
+	damp: damp,
+	pingpong: pingpong,
+	smoothstep: smoothstep,
+	smootherstep: smootherstep,
+	randInt: randInt,
+	randFloat: randFloat,
+	randFloatSpread: randFloatSpread,
+	seededRandom: seededRandom,
+	degToRad: degToRad,
+	radToDeg: radToDeg,
+	isPowerOfTwo: isPowerOfTwo,
+	ceilPowerOfTwo: ceilPowerOfTwo,
+	floorPowerOfTwo: floorPowerOfTwo,
+	setQuaternionFromProperEuler: setQuaternionFromProperEuler,
+	normalize: normalize,
+	denormalize: denormalize
+};
+
+class Vector2 {
+
+	constructor( x = 0, y = 0 ) {
+
+		Vector2.prototype.isVector2 = true;
+
+		this.x = x;
+		this.y = y;
+
+	}
+
+	get width() {
+
+		return this.x;
+
+	}
+
+	set width( value ) {
+
+		this.x = value;
+
+	}
+
+	get height() {
+
+		return this.y;
+
+	}
+
+	set height( value ) {
+
+		this.y = value;
+
+	}
+
+	set( x, y ) {
+
+		this.x = x;
+		this.y = y;
+
+		return this;
+
+	}
+
+	setScalar( scalar ) {
+
+		this.x = scalar;
+		this.y = scalar;
+
+		return this;
+
+	}
+
+	setX( x ) {
+
+		this.x = x;
+
+		return this;
+
+	}
+
+	setY( y ) {
+
+		this.y = y;
+
+		return this;
+
+	}
+
+	setComponent( index, value ) {
+
+		switch ( index ) {
+
+			case 0: this.x = value; break;
+			case 1: this.y = value; break;
+			default: throw new Error( 'index is out of range: ' + index );
+
+		}
+
+		return this;
+
+	}
+
+	getComponent( index ) {
+
+		switch ( index ) {
+
+			case 0: return this.x;
+			case 1: return this.y;
+			default: throw new Error( 'index is out of range: ' + index );
+
+		}
+
+	}
+
+	clone() {
+
+		return new this.constructor( this.x, this.y );
+
+	}
+
+	copy( v ) {
+
+		this.x = v.x;
+		this.y = v.y;
+
+		return this;
+
+	}
+
+	add( v ) {
+
+		this.x += v.x;
+		this.y += v.y;
+
+		return this;
+
+	}
+
+	addScalar( s ) {
+
+		this.x += s;
+		this.y += s;
+
+		return this;
+
+	}
+
+	addVectors( a, b ) {
+
+		this.x = a.x + b.x;
+		this.y = a.y + b.y;
+
+		return this;
+
+	}
+
+	addScaledVector( v, s ) {
+
+		this.x += v.x * s;
+		this.y += v.y * s;
+
+		return this;
+
+	}
+
+	sub( v ) {
+
+		this.x -= v.x;
+		this.y -= v.y;
+
+		return this;
+
+	}
+
+	subScalar( s ) {
+
+		this.x -= s;
+		this.y -= s;
+
+		return this;
+
+	}
+
+	subVectors( a, b ) {
+
+		this.x = a.x - b.x;
+		this.y = a.y - b.y;
+
+		return this;
+
+	}
+
+	multiply( v ) {
+
+		this.x *= v.x;
+		this.y *= v.y;
+
+		return this;
+
+	}
+
+	multiplyScalar( scalar ) {
+
+		this.x *= scalar;
+		this.y *= scalar;
+
+		return this;
+
+	}
+
+	divide( v ) {
+
+		this.x /= v.x;
+		this.y /= v.y;
+
+		return this;
+
+	}
+
+	divideScalar( scalar ) {
+
+		return this.multiplyScalar( 1 / scalar );
+
+	}
+
+	applyMatrix3( m ) {
+
+		const x = this.x, y = this.y;
+		const e = m.elements;
+
+		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ];
+		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ];
+
+		return this;
+
+	}
+
+	min( v ) {
+
+		this.x = Math.min( this.x, v.x );
+		this.y = Math.min( this.y, v.y );
+
+		return this;
+
+	}
+
+	max( v ) {
+
+		this.x = Math.max( this.x, v.x );
+		this.y = Math.max( this.y, v.y );
+
+		return this;
+
+	}
+
+	clamp( min, max ) {
+
+		// assumes min < max, componentwise
+
+		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
+		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
+
+		return this;
+
+	}
+
+	clampScalar( minVal, maxVal ) {
+
+		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
+		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
+
+		return this;
+
+	}
+
+	clampLength( min, max ) {
+
+		const length = this.length();
+
+		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
+
+	}
+
+	floor() {
+
+		this.x = Math.floor( this.x );
+		this.y = Math.floor( this.y );
+
+		return this;
+
+	}
+
+	ceil() {
+
+		this.x = Math.ceil( this.x );
+		this.y = Math.ceil( this.y );
+
+		return this;
+
+	}
+
+	round() {
+
+		this.x = Math.round( this.x );
+		this.y = Math.round( this.y );
+
+		return this;
+
+	}
+
+	roundToZero() {
+
+		this.x = Math.trunc( this.x );
+		this.y = Math.trunc( this.y );
+
+		return this;
+
+	}
+
+	negate() {
+
+		this.x = - this.x;
+		this.y = - this.y;
+
+		return this;
+
+	}
+
+	dot( v ) {
+
+		return this.x * v.x + this.y * v.y;
+
+	}
+
+	cross( v ) {
+
+		return this.x * v.y - this.y * v.x;
+
+	}
+
+	lengthSq() {
+
+		return this.x * this.x + this.y * this.y;
+
+	}
+
+	length() {
+
+		return Math.sqrt( this.x * this.x + this.y * this.y );
+
+	}
+
+	manhattanLength() {
+
+		return Math.abs( this.x ) + Math.abs( this.y );
+
+	}
+
+	normalize() {
+
+		return this.divideScalar( this.length() || 1 );
+
+	}
+
+	angle() {
+
+		// computes the angle in radians with respect to the positive x-axis
+
+		const angle = Math.atan2( - this.y, - this.x ) + Math.PI;
+
+		return angle;
+
+	}
+
+	angleTo( v ) {
+
+		const denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );
+
+		if ( denominator === 0 ) return Math.PI / 2;
+
+		const theta = this.dot( v ) / denominator;
+
+		// clamp, to handle numerical problems
+
+		return Math.acos( clamp( theta, - 1, 1 ) );
+
+	}
+
+	distanceTo( v ) {
+
+		return Math.sqrt( this.distanceToSquared( v ) );
+
+	}
+
+	distanceToSquared( v ) {
+
+		const dx = this.x - v.x, dy = this.y - v.y;
+		return dx * dx + dy * dy;
+
+	}
+
+	manhattanDistanceTo( v ) {
+
+		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y );
+
+	}
+
+	setLength( length ) {
+
+		return this.normalize().multiplyScalar( length );
+
+	}
+
+	lerp( v, alpha ) {
+
+		this.x += ( v.x - this.x ) * alpha;
+		this.y += ( v.y - this.y ) * alpha;
+
+		return this;
+
+	}
+
+	lerpVectors( v1, v2, alpha ) {
+
+		this.x = v1.x + ( v2.x - v1.x ) * alpha;
+		this.y = v1.y + ( v2.y - v1.y ) * alpha;
+
+		return this;
+
+	}
+
+	equals( v ) {
+
+		return ( ( v.x === this.x ) && ( v.y === this.y ) );
+
+	}
+
+	fromArray( array, offset = 0 ) {
+
+		this.x = array[ offset ];
+		this.y = array[ offset + 1 ];
+
+		return this;
+
+	}
+
+	toArray( array = [], offset = 0 ) {
+
+		array[ offset ] = this.x;
+		array[ offset + 1 ] = this.y;
+
+		return array;
+
+	}
+
+	fromBufferAttribute( attribute, index ) {
+
+		this.x = attribute.getX( index );
+		this.y = attribute.getY( index );
+
+		return this;
+
+	}
+
+	rotateAround( center, angle ) {
+
+		const c = Math.cos( angle ), s = Math.sin( angle );
+
+		const x = this.x - center.x;
+		const y = this.y - center.y;
+
+		this.x = x * c - y * s + center.x;
+		this.y = x * s + y * c + center.y;
+
+		return this;
+
+	}
+
+	random() {
+
+		this.x = Math.random();
+		this.y = Math.random();
+
+		return this;
+
+	}
+
+	*[ Symbol.iterator ]() {
+
+		yield this.x;
+		yield this.y;
+
+	}
+
+}
+
+class Matrix3 {
+
+	constructor( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {
+
+		Matrix3.prototype.isMatrix3 = true;
+
+		this.elements = [
+
+			1, 0, 0,
+			0, 1, 0,
+			0, 0, 1
+
+		];
+
+		if ( n11 !== undefined ) {
+
+			this.set( n11, n12, n13, n21, n22, n23, n31, n32, n33 );
+
+		}
+
+	}
+
+	set( n11, n12, n13, n21, n22, n23, n31, n32, n33 ) {
+
+		const te = this.elements;
+
+		te[ 0 ] = n11; te[ 1 ] = n21; te[ 2 ] = n31;
+		te[ 3 ] = n12; te[ 4 ] = n22; te[ 5 ] = n32;
+		te[ 6 ] = n13; te[ 7 ] = n23; te[ 8 ] = n33;
+
+		return this;
+
+	}
+
+	identity() {
+
+		this.set(
+
+			1, 0, 0,
+			0, 1, 0,
+			0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	copy( m ) {
+
+		const te = this.elements;
+		const me = m.elements;
+
+		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ];
+		te[ 3 ] = me[ 3 ]; te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ];
+		te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ]; te[ 8 ] = me[ 8 ];
+
+		return this;
+
+	}
+
+	extractBasis( xAxis, yAxis, zAxis ) {
+
+		xAxis.setFromMatrix3Column( this, 0 );
+		yAxis.setFromMatrix3Column( this, 1 );
+		zAxis.setFromMatrix3Column( this, 2 );
+
+		return this;
+
+	}
+
+	setFromMatrix4( m ) {
+
+		const me = m.elements;
+
+		this.set(
+
+			me[ 0 ], me[ 4 ], me[ 8 ],
+			me[ 1 ], me[ 5 ], me[ 9 ],
+			me[ 2 ], me[ 6 ], me[ 10 ]
+
+		);
+
+		return this;
+
+	}
+
+	multiply( m ) {
+
+		return this.multiplyMatrices( this, m );
+
+	}
+
+	premultiply( m ) {
+
+		return this.multiplyMatrices( m, this );
+
+	}
+
+	multiplyMatrices( a, b ) {
+
+		const ae = a.elements;
+		const be = b.elements;
+		const te = this.elements;
+
+		const a11 = ae[ 0 ], a12 = ae[ 3 ], a13 = ae[ 6 ];
+		const a21 = ae[ 1 ], a22 = ae[ 4 ], a23 = ae[ 7 ];
+		const a31 = ae[ 2 ], a32 = ae[ 5 ], a33 = ae[ 8 ];
+
+		const b11 = be[ 0 ], b12 = be[ 3 ], b13 = be[ 6 ];
+		const b21 = be[ 1 ], b22 = be[ 4 ], b23 = be[ 7 ];
+		const b31 = be[ 2 ], b32 = be[ 5 ], b33 = be[ 8 ];
+
+		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31;
+		te[ 3 ] = a11 * b12 + a12 * b22 + a13 * b32;
+		te[ 6 ] = a11 * b13 + a12 * b23 + a13 * b33;
+
+		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31;
+		te[ 4 ] = a21 * b12 + a22 * b22 + a23 * b32;
+		te[ 7 ] = a21 * b13 + a22 * b23 + a23 * b33;
+
+		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31;
+		te[ 5 ] = a31 * b12 + a32 * b22 + a33 * b32;
+		te[ 8 ] = a31 * b13 + a32 * b23 + a33 * b33;
+
+		return this;
+
+	}
+
+	multiplyScalar( s ) {
+
+		const te = this.elements;
+
+		te[ 0 ] *= s; te[ 3 ] *= s; te[ 6 ] *= s;
+		te[ 1 ] *= s; te[ 4 ] *= s; te[ 7 ] *= s;
+		te[ 2 ] *= s; te[ 5 ] *= s; te[ 8 ] *= s;
+
+		return this;
+
+	}
+
+	determinant() {
+
+		const te = this.elements;
+
+		const a = te[ 0 ], b = te[ 1 ], c = te[ 2 ],
+			d = te[ 3 ], e = te[ 4 ], f = te[ 5 ],
+			g = te[ 6 ], h = te[ 7 ], i = te[ 8 ];
+
+		return a * e * i - a * f * h - b * d * i + b * f * g + c * d * h - c * e * g;
+
+	}
+
+	invert() {
+
+		const te = this.elements,
+
+			n11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ],
+			n12 = te[ 3 ], n22 = te[ 4 ], n32 = te[ 5 ],
+			n13 = te[ 6 ], n23 = te[ 7 ], n33 = te[ 8 ],
+
+			t11 = n33 * n22 - n32 * n23,
+			t12 = n32 * n13 - n33 * n12,
+			t13 = n23 * n12 - n22 * n13,
+
+			det = n11 * t11 + n21 * t12 + n31 * t13;
+
+		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0 );
+
+		const detInv = 1 / det;
+
+		te[ 0 ] = t11 * detInv;
+		te[ 1 ] = ( n31 * n23 - n33 * n21 ) * detInv;
+		te[ 2 ] = ( n32 * n21 - n31 * n22 ) * detInv;
+
+		te[ 3 ] = t12 * detInv;
+		te[ 4 ] = ( n33 * n11 - n31 * n13 ) * detInv;
+		te[ 5 ] = ( n31 * n12 - n32 * n11 ) * detInv;
+
+		te[ 6 ] = t13 * detInv;
+		te[ 7 ] = ( n21 * n13 - n23 * n11 ) * detInv;
+		te[ 8 ] = ( n22 * n11 - n21 * n12 ) * detInv;
+
+		return this;
+
+	}
+
+	transpose() {
+
+		let tmp;
+		const m = this.elements;
+
+		tmp = m[ 1 ]; m[ 1 ] = m[ 3 ]; m[ 3 ] = tmp;
+		tmp = m[ 2 ]; m[ 2 ] = m[ 6 ]; m[ 6 ] = tmp;
+		tmp = m[ 5 ]; m[ 5 ] = m[ 7 ]; m[ 7 ] = tmp;
+
+		return this;
+
+	}
+
+	getNormalMatrix( matrix4 ) {
+
+		return this.setFromMatrix4( matrix4 ).invert().transpose();
+
+	}
+
+	transposeIntoArray( r ) {
+
+		const m = this.elements;
+
+		r[ 0 ] = m[ 0 ];
+		r[ 1 ] = m[ 3 ];
+		r[ 2 ] = m[ 6 ];
+		r[ 3 ] = m[ 1 ];
+		r[ 4 ] = m[ 4 ];
+		r[ 5 ] = m[ 7 ];
+		r[ 6 ] = m[ 2 ];
+		r[ 7 ] = m[ 5 ];
+		r[ 8 ] = m[ 8 ];
+
+		return this;
+
+	}
+
+	setUvTransform( tx, ty, sx, sy, rotation, cx, cy ) {
+
+		const c = Math.cos( rotation );
+		const s = Math.sin( rotation );
+
+		this.set(
+			sx * c, sx * s, - sx * ( c * cx + s * cy ) + cx + tx,
+			- sy * s, sy * c, - sy * ( - s * cx + c * cy ) + cy + ty,
+			0, 0, 1
+		);
+
+		return this;
+
+	}
+
+	//
+
+	scale( sx, sy ) {
+
+		this.premultiply( _m3.makeScale( sx, sy ) );
+
+		return this;
+
+	}
+
+	rotate( theta ) {
+
+		this.premultiply( _m3.makeRotation( - theta ) );
+
+		return this;
+
+	}
+
+	translate( tx, ty ) {
+
+		this.premultiply( _m3.makeTranslation( tx, ty ) );
+
+		return this;
+
+	}
+
+	// for 2D Transforms
+
+	makeTranslation( x, y ) {
+
+		if ( x.isVector2 ) {
+
+			this.set(
+
+				1, 0, x.x,
+				0, 1, x.y,
+				0, 0, 1
+
+			);
+
+		} else {
+
+			this.set(
+
+				1, 0, x,
+				0, 1, y,
+				0, 0, 1
+
+			);
+
+		}
+
+		return this;
+
+	}
+
+	makeRotation( theta ) {
+
+		// counterclockwise
+
+		const c = Math.cos( theta );
+		const s = Math.sin( theta );
+
+		this.set(
+
+			c, - s, 0,
+			s, c, 0,
+			0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	makeScale( x, y ) {
+
+		this.set(
+
+			x, 0, 0,
+			0, y, 0,
+			0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	//
+
+	equals( matrix ) {
+
+		const te = this.elements;
+		const me = matrix.elements;
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			if ( te[ i ] !== me[ i ] ) return false;
+
+		}
+
+		return true;
+
+	}
+
+	fromArray( array, offset = 0 ) {
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			this.elements[ i ] = array[ i + offset ];
+
+		}
+
+		return this;
+
+	}
+
+	toArray( array = [], offset = 0 ) {
+
+		const te = this.elements;
+
+		array[ offset ] = te[ 0 ];
+		array[ offset + 1 ] = te[ 1 ];
+		array[ offset + 2 ] = te[ 2 ];
+
+		array[ offset + 3 ] = te[ 3 ];
+		array[ offset + 4 ] = te[ 4 ];
+		array[ offset + 5 ] = te[ 5 ];
+
+		array[ offset + 6 ] = te[ 6 ];
+		array[ offset + 7 ] = te[ 7 ];
+		array[ offset + 8 ] = te[ 8 ];
+
+		return array;
+
+	}
+
+	clone() {
+
+		return new this.constructor().fromArray( this.elements );
+
+	}
+
+}
+
+const _m3 = /*@__PURE__*/ new Matrix3();
+
+function arrayNeedsUint32( array ) {
+
+	// assumes larger values usually on last
+
+	for ( let i = array.length - 1; i >= 0; -- i ) {
+
+		if ( array[ i ] >= 65535 ) return true; // account for PRIMITIVE_RESTART_FIXED_INDEX, #24565
+
+	}
+
+	return false;
+
+}
+
+const TYPED_ARRAYS = {
+	Int8Array: Int8Array,
+	Uint8Array: Uint8Array,
+	Uint8ClampedArray: Uint8ClampedArray,
+	Int16Array: Int16Array,
+	Uint16Array: Uint16Array,
+	Int32Array: Int32Array,
+	Uint32Array: Uint32Array,
+	Float32Array: Float32Array,
+	Float64Array: Float64Array
+};
+
+function getTypedArray( type, buffer ) {
+
+	return new TYPED_ARRAYS[ type ]( buffer );
+
+}
+
+function createElementNS( name ) {
+
+	return document.createElementNS( 'http://www.w3.org/1999/xhtml', name );
+
+}
+
+function createCanvasElement() {
+
+	const canvas = createElementNS( 'canvas' );
+	canvas.style.display = 'block';
+	return canvas;
+
+}
+
+const _cache = {};
+
+function warnOnce( message ) {
+
+	if ( message in _cache ) return;
+
+	_cache[ message ] = true;
+
+	console.warn( message );
+
+}
+
+function probeAsync( gl, sync, interval ) {
+
+	return new Promise( function ( resolve, reject ) {
+
+		function probe() {
+
+			switch ( gl.clientWaitSync( sync, gl.SYNC_FLUSH_COMMANDS_BIT, 0 ) ) {
+
+				case gl.WAIT_FAILED:
+					reject();
+					break;
+
+				case gl.TIMEOUT_EXPIRED:
+					setTimeout( probe, interval );
+					break;
+
+				default:
+					resolve();
+
+			}
+
+		}
+
+		setTimeout( probe, interval );
+
+	} );
+
+}
+
+/**
+ * Matrices converting P3 <-> Rec. 709 primaries, without gamut mapping
+ * or clipping. Based on W3C specifications for sRGB and Display P3,
+ * and ICC specifications for the D50 connection space. Values in/out
+ * are _linear_ sRGB and _linear_ Display P3.
+ *
+ * Note that both sRGB and Display P3 use the sRGB transfer functions.
+ *
+ * Reference:
+ * - http://www.russellcottrell.com/photo/matrixCalculator.htm
+ */
+
+const LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 = /*@__PURE__*/ new Matrix3().set(
+	0.8224621, 0.177538, 0.0,
+	0.0331941, 0.9668058, 0.0,
+	0.0170827, 0.0723974, 0.9105199,
+);
+
+const LINEAR_DISPLAY_P3_TO_LINEAR_SRGB = /*@__PURE__*/ new Matrix3().set(
+	1.2249401, - 0.2249404, 0.0,
+	- 0.0420569, 1.0420571, 0.0,
+	- 0.0196376, - 0.0786361, 1.0982735
+);
+
+/**
+ * Defines supported color spaces by transfer function and primaries,
+ * and provides conversions to/from the Linear-sRGB reference space.
+ */
+const COLOR_SPACES = {
+	[ LinearSRGBColorSpace ]: {
+		transfer: LinearTransfer,
+		primaries: Rec709Primaries,
+		luminanceCoefficients: [ 0.2126, 0.7152, 0.0722 ],
+		toReference: ( color ) => color,
+		fromReference: ( color ) => color,
+	},
+	[ SRGBColorSpace ]: {
+		transfer: SRGBTransfer,
+		primaries: Rec709Primaries,
+		luminanceCoefficients: [ 0.2126, 0.7152, 0.0722 ],
+		toReference: ( color ) => color.convertSRGBToLinear(),
+		fromReference: ( color ) => color.convertLinearToSRGB(),
+	},
+	[ LinearDisplayP3ColorSpace ]: {
+		transfer: LinearTransfer,
+		primaries: P3Primaries,
+		luminanceCoefficients: [ 0.2289, 0.6917, 0.0793 ],
+		toReference: ( color ) => color.applyMatrix3( LINEAR_DISPLAY_P3_TO_LINEAR_SRGB ),
+		fromReference: ( color ) => color.applyMatrix3( LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 ),
+	},
+	[ DisplayP3ColorSpace ]: {
+		transfer: SRGBTransfer,
+		primaries: P3Primaries,
+		luminanceCoefficients: [ 0.2289, 0.6917, 0.0793 ],
+		toReference: ( color ) => color.convertSRGBToLinear().applyMatrix3( LINEAR_DISPLAY_P3_TO_LINEAR_SRGB ),
+		fromReference: ( color ) => color.applyMatrix3( LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 ).convertLinearToSRGB(),
+	},
+};
+
+const SUPPORTED_WORKING_COLOR_SPACES = new Set( [ LinearSRGBColorSpace, LinearDisplayP3ColorSpace ] );
+
+const ColorManagement = {
+
+	enabled: true,
+
+	_workingColorSpace: LinearSRGBColorSpace,
+
+	get workingColorSpace() {
+
+		return this._workingColorSpace;
+
+	},
+
+	set workingColorSpace( colorSpace ) {
+
+		if ( ! SUPPORTED_WORKING_COLOR_SPACES.has( colorSpace ) ) {
+
+			throw new Error( `Unsupported working color space, "${ colorSpace }".` );
+
+		}
+
+		this._workingColorSpace = colorSpace;
+
+	},
+
+	convert: function ( color, sourceColorSpace, targetColorSpace ) {
+
+		if ( this.enabled === false || sourceColorSpace === targetColorSpace || ! sourceColorSpace || ! targetColorSpace ) {
+
+			return color;
+
+		}
+
+		const sourceToReference = COLOR_SPACES[ sourceColorSpace ].toReference;
+		const targetFromReference = COLOR_SPACES[ targetColorSpace ].fromReference;
+
+		return targetFromReference( sourceToReference( color ) );
+
+	},
+
+	fromWorkingColorSpace: function ( color, targetColorSpace ) {
+
+		return this.convert( color, this._workingColorSpace, targetColorSpace );
+
+	},
+
+	toWorkingColorSpace: function ( color, sourceColorSpace ) {
+
+		return this.convert( color, sourceColorSpace, this._workingColorSpace );
+
+	},
+
+	getPrimaries: function ( colorSpace ) {
+
+		return COLOR_SPACES[ colorSpace ].primaries;
+
+	},
+
+	getTransfer: function ( colorSpace ) {
+
+		if ( colorSpace === NoColorSpace ) return LinearTransfer;
+
+		return COLOR_SPACES[ colorSpace ].transfer;
+
+	},
+
+	getLuminanceCoefficients: function ( target, colorSpace = this._workingColorSpace ) {
+
+		return target.fromArray( COLOR_SPACES[ colorSpace ].luminanceCoefficients );
+
+	},
+
+};
+
+
+function SRGBToLinear( c ) {
+
+	return ( c < 0.04045 ) ? c * 0.0773993808 : Math.pow( c * 0.9478672986 + 0.0521327014, 2.4 );
+
+}
+
+function LinearToSRGB( c ) {
+
+	return ( c < 0.0031308 ) ? c * 12.92 : 1.055 * ( Math.pow( c, 0.41666 ) ) - 0.055;
+
+}
+
+let _canvas;
+
+class ImageUtils {
+
+	static getDataURL( image ) {
+
+		if ( /^data:/i.test( image.src ) ) {
+
+			return image.src;
+
+		}
+
+		if ( typeof HTMLCanvasElement === 'undefined' ) {
+
+			return image.src;
+
+		}
+
+		let canvas;
+
+		if ( image instanceof HTMLCanvasElement ) {
+
+			canvas = image;
+
+		} else {
+
+			if ( _canvas === undefined ) _canvas = createElementNS( 'canvas' );
+
+			_canvas.width = image.width;
+			_canvas.height = image.height;
+
+			const context = _canvas.getContext( '2d' );
+
+			if ( image instanceof ImageData ) {
+
+				context.putImageData( image, 0, 0 );
+
+			} else {
+
+				context.drawImage( image, 0, 0, image.width, image.height );
+
+			}
+
+			canvas = _canvas;
+
+		}
+
+		if ( canvas.width > 2048 || canvas.height > 2048 ) {
+
+			console.warn( 'THREE.ImageUtils.getDataURL: Image converted to jpg for performance reasons', image );
+
+			return canvas.toDataURL( 'image/jpeg', 0.6 );
+
+		} else {
+
+			return canvas.toDataURL( 'image/png' );
+
+		}
+
+	}
+
+	static sRGBToLinear( image ) {
+
+		if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
+			( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
+			( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {
+
+			const canvas = createElementNS( 'canvas' );
+
+			canvas.width = image.width;
+			canvas.height = image.height;
+
+			const context = canvas.getContext( '2d' );
+			context.drawImage( image, 0, 0, image.width, image.height );
+
+			const imageData = context.getImageData( 0, 0, image.width, image.height );
+			const data = imageData.data;
+
+			for ( let i = 0; i < data.length; i ++ ) {
+
+				data[ i ] = SRGBToLinear( data[ i ] / 255 ) * 255;
+
+			}
+
+			context.putImageData( imageData, 0, 0 );
+
+			return canvas;
+
+		} else if ( image.data ) {
+
+			const data = image.data.slice( 0 );
+
+			for ( let i = 0; i < data.length; i ++ ) {
+
+				if ( data instanceof Uint8Array || data instanceof Uint8ClampedArray ) {
+
+					data[ i ] = Math.floor( SRGBToLinear( data[ i ] / 255 ) * 255 );
+
+				} else {
+
+					// assuming float
+
+					data[ i ] = SRGBToLinear( data[ i ] );
+
+				}
+
+			}
+
+			return {
+				data: data,
+				width: image.width,
+				height: image.height
+			};
+
+		} else {
+
+			console.warn( 'THREE.ImageUtils.sRGBToLinear(): Unsupported image type. No color space conversion applied.' );
+			return image;
+
+		}
+
+	}
+
+}
+
+let _sourceId = 0;
+
+class Source {
+
+	constructor( data = null ) {
+
+		this.isSource = true;
+
+		Object.defineProperty( this, 'id', { value: _sourceId ++ } );
+
+		this.uuid = generateUUID();
+
+		this.data = data;
+		this.dataReady = true;
+
+		this.version = 0;
+
+	}
+
+	set needsUpdate( value ) {
+
+		if ( value === true ) this.version ++;
+
+	}
+
+	toJSON( meta ) {
+
+		const isRootObject = ( meta === undefined || typeof meta === 'string' );
+
+		if ( ! isRootObject && meta.images[ this.uuid ] !== undefined ) {
+
+			return meta.images[ this.uuid ];
+
+		}
+
+		const output = {
+			uuid: this.uuid,
+			url: ''
+		};
+
+		const data = this.data;
+
+		if ( data !== null ) {
+
+			let url;
+
+			if ( Array.isArray( data ) ) {
+
+				// cube texture
+
+				url = [];
+
+				for ( let i = 0, l = data.length; i < l; i ++ ) {
+
+					if ( data[ i ].isDataTexture ) {
+
+						url.push( serializeImage( data[ i ].image ) );
+
+					} else {
+
+						url.push( serializeImage( data[ i ] ) );
+
+					}
+
+				}
+
+			} else {
+
+				// texture
+
+				url = serializeImage( data );
+
+			}
+
+			output.url = url;
+
+		}
+
+		if ( ! isRootObject ) {
+
+			meta.images[ this.uuid ] = output;
+
+		}
+
+		return output;
+
+	}
+
+}
+
+function serializeImage( image ) {
+
+	if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
+		( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
+		( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {
+
+		// default images
+
+		return ImageUtils.getDataURL( image );
+
+	} else {
+
+		if ( image.data ) {
+
+			// images of DataTexture
+
+			return {
+				data: Array.from( image.data ),
+				width: image.width,
+				height: image.height,
+				type: image.data.constructor.name
+			};
+
+		} else {
+
+			console.warn( 'THREE.Texture: Unable to serialize Texture.' );
+			return {};
+
+		}
+
+	}
+
+}
+
+let _textureId = 0;
+
+class Texture extends EventDispatcher {
+
+	constructor( image = Texture.DEFAULT_IMAGE, mapping = Texture.DEFAULT_MAPPING, wrapS = ClampToEdgeWrapping, wrapT = ClampToEdgeWrapping, magFilter = LinearFilter, minFilter = LinearMipmapLinearFilter, format = RGBAFormat, type = UnsignedByteType, anisotropy = Texture.DEFAULT_ANISOTROPY, colorSpace = NoColorSpace ) {
+
+		super();
+
+		this.isTexture = true;
+
+		Object.defineProperty( this, 'id', { value: _textureId ++ } );
+
+		this.uuid = generateUUID();
+
+		this.name = '';
+
+		this.source = new Source( image );
+		this.mipmaps = [];
+
+		this.mapping = mapping;
+		this.channel = 0;
+
+		this.wrapS = wrapS;
+		this.wrapT = wrapT;
+
+		this.magFilter = magFilter;
+		this.minFilter = minFilter;
+
+		this.anisotropy = anisotropy;
+
+		this.format = format;
+		this.internalFormat = null;
+		this.type = type;
+
+		this.offset = new Vector2( 0, 0 );
+		this.repeat = new Vector2( 1, 1 );
+		this.center = new Vector2( 0, 0 );
+		this.rotation = 0;
+
+		this.matrixAutoUpdate = true;
+		this.matrix = new Matrix3();
+
+		this.generateMipmaps = true;
+		this.premultiplyAlpha = false;
+		this.flipY = true;
+		this.unpackAlignment = 4;	// valid values: 1, 2, 4, 8 (see http://www.khronos.org/opengles/sdk/docs/man/xhtml/glPixelStorei.xml)
+
+		this.colorSpace = colorSpace;
+
+		this.userData = {};
+
+		this.version = 0;
+		this.onUpdate = null;
+
+		this.isRenderTargetTexture = false; // indicates whether a texture belongs to a render target or not
+		this.pmremVersion = 0; // indicates whether this texture should be processed by PMREMGenerator or not (only relevant for render target textures)
+
+	}
+
+	get image() {
+
+		return this.source.data;
+
+	}
+
+	set image( value = null ) {
+
+		this.source.data = value;
+
+	}
+
+	updateMatrix() {
+
+		this.matrix.setUvTransform( this.offset.x, this.offset.y, this.repeat.x, this.repeat.y, this.rotation, this.center.x, this.center.y );
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+	copy( source ) {
+
+		this.name = source.name;
+
+		this.source = source.source;
+		this.mipmaps = source.mipmaps.slice( 0 );
+
+		this.mapping = source.mapping;
+		this.channel = source.channel;
+
+		this.wrapS = source.wrapS;
+		this.wrapT = source.wrapT;
+
+		this.magFilter = source.magFilter;
+		this.minFilter = source.minFilter;
+
+		this.anisotropy = source.anisotropy;
+
+		this.format = source.format;
+		this.internalFormat = source.internalFormat;
+		this.type = source.type;
+
+		this.offset.copy( source.offset );
+		this.repeat.copy( source.repeat );
+		this.center.copy( source.center );
+		this.rotation = source.rotation;
+
+		this.matrixAutoUpdate = source.matrixAutoUpdate;
+		this.matrix.copy( source.matrix );
+
+		this.generateMipmaps = source.generateMipmaps;
+		this.premultiplyAlpha = source.premultiplyAlpha;
+		this.flipY = source.flipY;
+		this.unpackAlignment = source.unpackAlignment;
+		this.colorSpace = source.colorSpace;
+
+		this.userData = JSON.parse( JSON.stringify( source.userData ) );
+
+		this.needsUpdate = true;
+
+		return this;
+
+	}
+
+	toJSON( meta ) {
+
+		const isRootObject = ( meta === undefined || typeof meta === 'string' );
+
+		if ( ! isRootObject && meta.textures[ this.uuid ] !== undefined ) {
+
+			return meta.textures[ this.uuid ];
+
+		}
+
+		const output = {
+
+			metadata: {
+				version: 4.6,
+				type: 'Texture',
+				generator: 'Texture.toJSON'
+			},
+
+			uuid: this.uuid,
+			name: this.name,
+
+			image: this.source.toJSON( meta ).uuid,
+
+			mapping: this.mapping,
+			channel: this.channel,
+
+			repeat: [ this.repeat.x, this.repeat.y ],
+			offset: [ this.offset.x, this.offset.y ],
+			center: [ this.center.x, this.center.y ],
+			rotation: this.rotation,
+
+			wrap: [ this.wrapS, this.wrapT ],
+
+			format: this.format,
+			internalFormat: this.internalFormat,
+			type: this.type,
+			colorSpace: this.colorSpace,
+
+			minFilter: this.minFilter,
+			magFilter: this.magFilter,
+			anisotropy: this.anisotropy,
+
+			flipY: this.flipY,
+
+			generateMipmaps: this.generateMipmaps,
+			premultiplyAlpha: this.premultiplyAlpha,
+			unpackAlignment: this.unpackAlignment
+
+		};
+
+		if ( Object.keys( this.userData ).length > 0 ) output.userData = this.userData;
+
+		if ( ! isRootObject ) {
+
+			meta.textures[ this.uuid ] = output;
+
+		}
+
+		return output;
+
+	}
+
+	dispose() {
+
+		this.dispatchEvent( { type: 'dispose' } );
+
+	}
+
+	transformUv( uv ) {
+
+		if ( this.mapping !== UVMapping ) return uv;
+
+		uv.applyMatrix3( this.matrix );
+
+		if ( uv.x < 0 || uv.x > 1 ) {
+
+			switch ( this.wrapS ) {
+
+				case RepeatWrapping:
+
+					uv.x = uv.x - Math.floor( uv.x );
+					break;
+
+				case ClampToEdgeWrapping:
+
+					uv.x = uv.x < 0 ? 0 : 1;
+					break;
+
+				case MirroredRepeatWrapping:
+
+					if ( Math.abs( Math.floor( uv.x ) % 2 ) === 1 ) {
+
+						uv.x = Math.ceil( uv.x ) - uv.x;
+
+					} else {
+
+						uv.x = uv.x - Math.floor( uv.x );
+
+					}
+
+					break;
+
+			}
+
+		}
+
+		if ( uv.y < 0 || uv.y > 1 ) {
+
+			switch ( this.wrapT ) {
+
+				case RepeatWrapping:
+
+					uv.y = uv.y - Math.floor( uv.y );
+					break;
+
+				case ClampToEdgeWrapping:
+
+					uv.y = uv.y < 0 ? 0 : 1;
+					break;
+
+				case MirroredRepeatWrapping:
+
+					if ( Math.abs( Math.floor( uv.y ) % 2 ) === 1 ) {
+
+						uv.y = Math.ceil( uv.y ) - uv.y;
+
+					} else {
+
+						uv.y = uv.y - Math.floor( uv.y );
+
+					}
+
+					break;
+
+			}
+
+		}
+
+		if ( this.flipY ) {
+
+			uv.y = 1 - uv.y;
+
+		}
+
+		return uv;
+
+	}
+
+	set needsUpdate( value ) {
+
+		if ( value === true ) {
+
+			this.version ++;
+			this.source.needsUpdate = true;
+
+		}
+
+	}
+
+	set needsPMREMUpdate( value ) {
+
+		if ( value === true ) {
+
+			this.pmremVersion ++;
+
+		}
+
+	}
+
+}
+
+Texture.DEFAULT_IMAGE = null;
+Texture.DEFAULT_MAPPING = UVMapping;
+Texture.DEFAULT_ANISOTROPY = 1;
+
+class Vector4 {
+
+	constructor( x = 0, y = 0, z = 0, w = 1 ) {
+
+		Vector4.prototype.isVector4 = true;
+
+		this.x = x;
+		this.y = y;
+		this.z = z;
+		this.w = w;
+
+	}
+
+	get width() {
+
+		return this.z;
+
+	}
+
+	set width( value ) {
+
+		this.z = value;
+
+	}
+
+	get height() {
+
+		return this.w;
+
+	}
+
+	set height( value ) {
+
+		this.w = value;
+
+	}
+
+	set( x, y, z, w ) {
+
+		this.x = x;
+		this.y = y;
+		this.z = z;
+		this.w = w;
+
+		return this;
+
+	}
+
+	setScalar( scalar ) {
+
+		this.x = scalar;
+		this.y = scalar;
+		this.z = scalar;
+		this.w = scalar;
+
+		return this;
+
+	}
+
+	setX( x ) {
+
+		this.x = x;
+
+		return this;
+
+	}
+
+	setY( y ) {
+
+		this.y = y;
+
+		return this;
+
+	}
+
+	setZ( z ) {
+
+		this.z = z;
+
+		return this;
+
+	}
+
+	setW( w ) {
+
+		this.w = w;
+
+		return this;
+
+	}
+
+	setComponent( index, value ) {
+
+		switch ( index ) {
+
+			case 0: this.x = value; break;
+			case 1: this.y = value; break;
+			case 2: this.z = value; break;
+			case 3: this.w = value; break;
+			default: throw new Error( 'index is out of range: ' + index );
+
+		}
+
+		return this;
+
+	}
+
+	getComponent( index ) {
+
+		switch ( index ) {
+
+			case 0: return this.x;
+			case 1: return this.y;
+			case 2: return this.z;
+			case 3: return this.w;
+			default: throw new Error( 'index is out of range: ' + index );
+
+		}
+
+	}
+
+	clone() {
+
+		return new this.constructor( this.x, this.y, this.z, this.w );
+
+	}
+
+	copy( v ) {
+
+		this.x = v.x;
+		this.y = v.y;
+		this.z = v.z;
+		this.w = ( v.w !== undefined ) ? v.w : 1;
+
+		return this;
+
+	}
+
+	add( v ) {
+
+		this.x += v.x;
+		this.y += v.y;
+		this.z += v.z;
+		this.w += v.w;
+
+		return this;
+
+	}
+
+	addScalar( s ) {
+
+		this.x += s;
+		this.y += s;
+		this.z += s;
+		this.w += s;
+
+		return this;
+
+	}
+
+	addVectors( a, b ) {
+
+		this.x = a.x + b.x;
+		this.y = a.y + b.y;
+		this.z = a.z + b.z;
+		this.w = a.w + b.w;
+
+		return this;
+
+	}
+
+	addScaledVector( v, s ) {
+
+		this.x += v.x * s;
+		this.y += v.y * s;
+		this.z += v.z * s;
+		this.w += v.w * s;
+
+		return this;
+
+	}
+
+	sub( v ) {
+
+		this.x -= v.x;
+		this.y -= v.y;
+		this.z -= v.z;
+		this.w -= v.w;
+
+		return this;
+
+	}
+
+	subScalar( s ) {
+
+		this.x -= s;
+		this.y -= s;
+		this.z -= s;
+		this.w -= s;
+
+		return this;
+
+	}
+
+	subVectors( a, b ) {
+
+		this.x = a.x - b.x;
+		this.y = a.y - b.y;
+		this.z = a.z - b.z;
+		this.w = a.w - b.w;
+
+		return this;
+
+	}
+
+	multiply( v ) {
+
+		this.x *= v.x;
+		this.y *= v.y;
+		this.z *= v.z;
+		this.w *= v.w;
+
+		return this;
+
+	}
+
+	multiplyScalar( scalar ) {
+
+		this.x *= scalar;
+		this.y *= scalar;
+		this.z *= scalar;
+		this.w *= scalar;
+
+		return this;
+
+	}
+
+	applyMatrix4( m ) {
+
+		const x = this.x, y = this.y, z = this.z, w = this.w;
+		const e = m.elements;
+
+		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] * w;
+		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] * w;
+		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] * w;
+		this.w = e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] * w;
+
+		return this;
+
+	}
+
+	divideScalar( scalar ) {
+
+		return this.multiplyScalar( 1 / scalar );
+
+	}
+
+	setAxisAngleFromQuaternion( q ) {
+
+		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/quaternionToAngle/index.htm
+
+		// q is assumed to be normalized
+
+		this.w = 2 * Math.acos( q.w );
+
+		const s = Math.sqrt( 1 - q.w * q.w );
+
+		if ( s < 0.0001 ) {
+
+			this.x = 1;
+			this.y = 0;
+			this.z = 0;
+
+		} else {
+
+			this.x = q.x / s;
+			this.y = q.y / s;
+			this.z = q.z / s;
+
+		}
+
+		return this;
+
+	}
+
+	setAxisAngleFromRotationMatrix( m ) {
+
+		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToAngle/index.htm
+
+		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+
+		let angle, x, y, z; // variables for result
+		const epsilon = 0.01,		// margin to allow for rounding errors
+			epsilon2 = 0.1,		// margin to distinguish between 0 and 180 degrees
+
+			te = m.elements,
+
+			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
+			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
+			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
+
+		if ( ( Math.abs( m12 - m21 ) < epsilon ) &&
+		     ( Math.abs( m13 - m31 ) < epsilon ) &&
+		     ( Math.abs( m23 - m32 ) < epsilon ) ) {
+
+			// singularity found
+			// first check for identity matrix which must have +1 for all terms
+			// in leading diagonal and zero in other terms
+
+			if ( ( Math.abs( m12 + m21 ) < epsilon2 ) &&
+			     ( Math.abs( m13 + m31 ) < epsilon2 ) &&
+			     ( Math.abs( m23 + m32 ) < epsilon2 ) &&
+			     ( Math.abs( m11 + m22 + m33 - 3 ) < epsilon2 ) ) {
+
+				// this singularity is identity matrix so angle = 0
+
+				this.set( 1, 0, 0, 0 );
+
+				return this; // zero angle, arbitrary axis
+
+			}
+
+			// otherwise this singularity is angle = 180
+
+			angle = Math.PI;
+
+			const xx = ( m11 + 1 ) / 2;
+			const yy = ( m22 + 1 ) / 2;
+			const zz = ( m33 + 1 ) / 2;
+			const xy = ( m12 + m21 ) / 4;
+			const xz = ( m13 + m31 ) / 4;
+			const yz = ( m23 + m32 ) / 4;
+
+			if ( ( xx > yy ) && ( xx > zz ) ) {
+
+				// m11 is the largest diagonal term
+
+				if ( xx < epsilon ) {
+
+					x = 0;
+					y = 0.707106781;
+					z = 0.707106781;
+
+				} else {
+
+					x = Math.sqrt( xx );
+					y = xy / x;
+					z = xz / x;
+
+				}
+
+			} else if ( yy > zz ) {
+
+				// m22 is the largest diagonal term
+
+				if ( yy < epsilon ) {
+
+					x = 0.707106781;
+					y = 0;
+					z = 0.707106781;
+
+				} else {
+
+					y = Math.sqrt( yy );
+					x = xy / y;
+					z = yz / y;
+
+				}
+
+			} else {
+
+				// m33 is the largest diagonal term so base result on this
+
+				if ( zz < epsilon ) {
+
+					x = 0.707106781;
+					y = 0.707106781;
+					z = 0;
+
+				} else {
+
+					z = Math.sqrt( zz );
+					x = xz / z;
+					y = yz / z;
+
+				}
+
+			}
+
+			this.set( x, y, z, angle );
+
+			return this; // return 180 deg rotation
+
+		}
+
+		// as we have reached here there are no singularities so we can handle normally
+
+		let s = Math.sqrt( ( m32 - m23 ) * ( m32 - m23 ) +
+			( m13 - m31 ) * ( m13 - m31 ) +
+			( m21 - m12 ) * ( m21 - m12 ) ); // used to normalize
+
+		if ( Math.abs( s ) < 0.001 ) s = 1;
+
+		// prevent divide by zero, should not happen if matrix is orthogonal and should be
+		// caught by singularity test above, but I've left it in just in case
+
+		this.x = ( m32 - m23 ) / s;
+		this.y = ( m13 - m31 ) / s;
+		this.z = ( m21 - m12 ) / s;
+		this.w = Math.acos( ( m11 + m22 + m33 - 1 ) / 2 );
+
+		return this;
+
+	}
+
+	setFromMatrixPosition( m ) {
+
+		const e = m.elements;
+
+		this.x = e[ 12 ];
+		this.y = e[ 13 ];
+		this.z = e[ 14 ];
+		this.w = e[ 15 ];
+
+		return this;
+
+	}
+
+	min( v ) {
+
+		this.x = Math.min( this.x, v.x );
+		this.y = Math.min( this.y, v.y );
+		this.z = Math.min( this.z, v.z );
+		this.w = Math.min( this.w, v.w );
+
+		return this;
+
+	}
+
+	max( v ) {
+
+		this.x = Math.max( this.x, v.x );
+		this.y = Math.max( this.y, v.y );
+		this.z = Math.max( this.z, v.z );
+		this.w = Math.max( this.w, v.w );
+
+		return this;
+
+	}
+
+	clamp( min, max ) {
+
+		// assumes min < max, componentwise
+
+		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
+		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
+		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
+		this.w = Math.max( min.w, Math.min( max.w, this.w ) );
+
+		return this;
+
+	}
+
+	clampScalar( minVal, maxVal ) {
+
+		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
+		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
+		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
+		this.w = Math.max( minVal, Math.min( maxVal, this.w ) );
+
+		return this;
+
+	}
+
+	clampLength( min, max ) {
+
+		const length = this.length();
+
+		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
+
+	}
+
+	floor() {
+
+		this.x = Math.floor( this.x );
+		this.y = Math.floor( this.y );
+		this.z = Math.floor( this.z );
+		this.w = Math.floor( this.w );
+
+		return this;
+
+	}
+
+	ceil() {
+
+		this.x = Math.ceil( this.x );
+		this.y = Math.ceil( this.y );
+		this.z = Math.ceil( this.z );
+		this.w = Math.ceil( this.w );
+
+		return this;
+
+	}
+
+	round() {
+
+		this.x = Math.round( this.x );
+		this.y = Math.round( this.y );
+		this.z = Math.round( this.z );
+		this.w = Math.round( this.w );
+
+		return this;
+
+	}
+
+	roundToZero() {
+
+		this.x = Math.trunc( this.x );
+		this.y = Math.trunc( this.y );
+		this.z = Math.trunc( this.z );
+		this.w = Math.trunc( this.w );
+
+		return this;
+
+	}
+
+	negate() {
+
+		this.x = - this.x;
+		this.y = - this.y;
+		this.z = - this.z;
+		this.w = - this.w;
+
+		return this;
+
+	}
+
+	dot( v ) {
+
+		return this.x * v.x + this.y * v.y + this.z * v.z + this.w * v.w;
+
+	}
+
+	lengthSq() {
+
+		return this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w;
+
+	}
+
+	length() {
+
+		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z + this.w * this.w );
+
+	}
+
+	manhattanLength() {
+
+		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z ) + Math.abs( this.w );
+
+	}
+
+	normalize() {
+
+		return this.divideScalar( this.length() || 1 );
+
+	}
+
+	setLength( length ) {
+
+		return this.normalize().multiplyScalar( length );
+
+	}
+
+	lerp( v, alpha ) {
+
+		this.x += ( v.x - this.x ) * alpha;
+		this.y += ( v.y - this.y ) * alpha;
+		this.z += ( v.z - this.z ) * alpha;
+		this.w += ( v.w - this.w ) * alpha;
+
+		return this;
+
+	}
+
+	lerpVectors( v1, v2, alpha ) {
+
+		this.x = v1.x + ( v2.x - v1.x ) * alpha;
+		this.y = v1.y + ( v2.y - v1.y ) * alpha;
+		this.z = v1.z + ( v2.z - v1.z ) * alpha;
+		this.w = v1.w + ( v2.w - v1.w ) * alpha;
+
+		return this;
+
+	}
+
+	equals( v ) {
+
+		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) && ( v.w === this.w ) );
+
+	}
+
+	fromArray( array, offset = 0 ) {
+
+		this.x = array[ offset ];
+		this.y = array[ offset + 1 ];
+		this.z = array[ offset + 2 ];
+		this.w = array[ offset + 3 ];
+
+		return this;
+
+	}
+
+	toArray( array = [], offset = 0 ) {
+
+		array[ offset ] = this.x;
+		array[ offset + 1 ] = this.y;
+		array[ offset + 2 ] = this.z;
+		array[ offset + 3 ] = this.w;
+
+		return array;
+
+	}
+
+	fromBufferAttribute( attribute, index ) {
+
+		this.x = attribute.getX( index );
+		this.y = attribute.getY( index );
+		this.z = attribute.getZ( index );
+		this.w = attribute.getW( index );
+
+		return this;
+
+	}
+
+	random() {
+
+		this.x = Math.random();
+		this.y = Math.random();
+		this.z = Math.random();
+		this.w = Math.random();
+
+		return this;
+
+	}
+
+	*[ Symbol.iterator ]() {
+
+		yield this.x;
+		yield this.y;
+		yield this.z;
+		yield this.w;
+
+	}
+
+}
+
+/*
+ In options, we can specify:
+ * Texture parameters for an auto-generated target texture
+ * depthBuffer/stencilBuffer: Booleans to indicate if we should generate these buffers
+*/
+class RenderTarget extends EventDispatcher {
+
+	constructor( width = 1, height = 1, options = {} ) {
+
+		super();
+
+		this.isRenderTarget = true;
+
+		this.width = width;
+		this.height = height;
+		this.depth = 1;
+
+		this.scissor = new Vector4( 0, 0, width, height );
+		this.scissorTest = false;
+
+		this.viewport = new Vector4( 0, 0, width, height );
+
+		const image = { width: width, height: height, depth: 1 };
+
+		options = Object.assign( {
+			generateMipmaps: false,
+			internalFormat: null,
+			minFilter: LinearFilter,
+			depthBuffer: true,
+			stencilBuffer: false,
+			resolveDepthBuffer: true,
+			resolveStencilBuffer: true,
+			depthTexture: null,
+			samples: 0,
+			count: 1
+		}, options );
+
+		const texture = new Texture( image, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.colorSpace );
+
+		texture.flipY = false;
+		texture.generateMipmaps = options.generateMipmaps;
+		texture.internalFormat = options.internalFormat;
+
+		this.textures = [];
+
+		const count = options.count;
+		for ( let i = 0; i < count; i ++ ) {
+
+			this.textures[ i ] = texture.clone();
+			this.textures[ i ].isRenderTargetTexture = true;
+
+		}
+
+		this.depthBuffer = options.depthBuffer;
+		this.stencilBuffer = options.stencilBuffer;
+
+		this.resolveDepthBuffer = options.resolveDepthBuffer;
+		this.resolveStencilBuffer = options.resolveStencilBuffer;
+
+		this.depthTexture = options.depthTexture;
+
+		this.samples = options.samples;
+
+	}
+
+	get texture() {
+
+		return this.textures[ 0 ];
+
+	}
+
+	set texture( value ) {
+
+		this.textures[ 0 ] = value;
+
+	}
+
+	setSize( width, height, depth = 1 ) {
+
+		if ( this.width !== width || this.height !== height || this.depth !== depth ) {
+
+			this.width = width;
+			this.height = height;
+			this.depth = depth;
+
+			for ( let i = 0, il = this.textures.length; i < il; i ++ ) {
+
+				this.textures[ i ].image.width = width;
+				this.textures[ i ].image.height = height;
+				this.textures[ i ].image.depth = depth;
+
+			}
+
+			this.dispose();
+
+		}
+
+		this.viewport.set( 0, 0, width, height );
+		this.scissor.set( 0, 0, width, height );
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+	copy( source ) {
+
+		this.width = source.width;
+		this.height = source.height;
+		this.depth = source.depth;
+
+		this.scissor.copy( source.scissor );
+		this.scissorTest = source.scissorTest;
+
+		this.viewport.copy( source.viewport );
+
+		this.textures.length = 0;
+
+		for ( let i = 0, il = source.textures.length; i < il; i ++ ) {
+
+			this.textures[ i ] = source.textures[ i ].clone();
+			this.textures[ i ].isRenderTargetTexture = true;
+
+		}
+
+		// ensure image object is not shared, see #20328
+
+		const image = Object.assign( {}, source.texture.image );
+		this.texture.source = new Source( image );
+
+		this.depthBuffer = source.depthBuffer;
+		this.stencilBuffer = source.stencilBuffer;
+
+		this.resolveDepthBuffer = source.resolveDepthBuffer;
+		this.resolveStencilBuffer = source.resolveStencilBuffer;
+
+		if ( source.depthTexture !== null ) this.depthTexture = source.depthTexture.clone();
+
+		this.samples = source.samples;
+
+		return this;
+
+	}
+
+	dispose() {
+
+		this.dispatchEvent( { type: 'dispose' } );
+
+	}
+
+}
+
+class WebGLRenderTarget extends RenderTarget {
+
+	constructor( width = 1, height = 1, options = {} ) {
+
+		super( width, height, options );
+
+		this.isWebGLRenderTarget = true;
+
+	}
+
+}
+
+class DataArrayTexture extends Texture {
+
+	constructor( data = null, width = 1, height = 1, depth = 1 ) {
+
+		super( null );
+
+		this.isDataArrayTexture = true;
+
+		this.image = { data, width, height, depth };
+
+		this.magFilter = NearestFilter;
+		this.minFilter = NearestFilter;
+
+		this.wrapR = ClampToEdgeWrapping;
+
+		this.generateMipmaps = false;
+		this.flipY = false;
+		this.unpackAlignment = 1;
+
+		this.layerUpdates = new Set();
+
+	}
+
+	addLayerUpdate( layerIndex ) {
+
+		this.layerUpdates.add( layerIndex );
+
+	}
+
+	clearLayerUpdates() {
+
+		this.layerUpdates.clear();
+
+	}
+
+}
+
+class WebGLArrayRenderTarget extends WebGLRenderTarget {
+
+	constructor( width = 1, height = 1, depth = 1, options = {} ) {
+
+		super( width, height, options );
+
+		this.isWebGLArrayRenderTarget = true;
+
+		this.depth = depth;
+
+		this.texture = new DataArrayTexture( null, width, height, depth );
+
+		this.texture.isRenderTargetTexture = true;
+
+	}
+
+}
+
+class Data3DTexture extends Texture {
+
+	constructor( data = null, width = 1, height = 1, depth = 1 ) {
+
+		// We're going to add .setXXX() methods for setting properties later.
+		// Users can still set in DataTexture3D directly.
+		//
+		//	const texture = new THREE.DataTexture3D( data, width, height, depth );
+		// 	texture.anisotropy = 16;
+		//
+		// See #14839
+
+		super( null );
+
+		this.isData3DTexture = true;
+
+		this.image = { data, width, height, depth };
+
+		this.magFilter = NearestFilter;
+		this.minFilter = NearestFilter;
+
+		this.wrapR = ClampToEdgeWrapping;
+
+		this.generateMipmaps = false;
+		this.flipY = false;
+		this.unpackAlignment = 1;
+
+	}
+
+}
+
+class WebGL3DRenderTarget extends WebGLRenderTarget {
+
+	constructor( width = 1, height = 1, depth = 1, options = {} ) {
+
+		super( width, height, options );
+
+		this.isWebGL3DRenderTarget = true;
+
+		this.depth = depth;
+
+		this.texture = new Data3DTexture( null, width, height, depth );
+
+		this.texture.isRenderTargetTexture = true;
+
+	}
+
+}
+
+class Quaternion {
+
+	constructor( x = 0, y = 0, z = 0, w = 1 ) {
+
+		this.isQuaternion = true;
+
+		this._x = x;
+		this._y = y;
+		this._z = z;
+		this._w = w;
+
+	}
+
+	static slerpFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1, t ) {
+
+		// fuzz-free, array-based Quaternion SLERP operation
+
+		let x0 = src0[ srcOffset0 + 0 ],
+			y0 = src0[ srcOffset0 + 1 ],
+			z0 = src0[ srcOffset0 + 2 ],
+			w0 = src0[ srcOffset0 + 3 ];
+
+		const x1 = src1[ srcOffset1 + 0 ],
+			y1 = src1[ srcOffset1 + 1 ],
+			z1 = src1[ srcOffset1 + 2 ],
+			w1 = src1[ srcOffset1 + 3 ];
+
+		if ( t === 0 ) {
+
+			dst[ dstOffset + 0 ] = x0;
+			dst[ dstOffset + 1 ] = y0;
+			dst[ dstOffset + 2 ] = z0;
+			dst[ dstOffset + 3 ] = w0;
+			return;
+
+		}
+
+		if ( t === 1 ) {
+
+			dst[ dstOffset + 0 ] = x1;
+			dst[ dstOffset + 1 ] = y1;
+			dst[ dstOffset + 2 ] = z1;
+			dst[ dstOffset + 3 ] = w1;
+			return;
+
+		}
+
+		if ( w0 !== w1 || x0 !== x1 || y0 !== y1 || z0 !== z1 ) {
+
+			let s = 1 - t;
+			const cos = x0 * x1 + y0 * y1 + z0 * z1 + w0 * w1,
+				dir = ( cos >= 0 ? 1 : - 1 ),
+				sqrSin = 1 - cos * cos;
+
+			// Skip the Slerp for tiny steps to avoid numeric problems:
+			if ( sqrSin > Number.EPSILON ) {
+
+				const sin = Math.sqrt( sqrSin ),
+					len = Math.atan2( sin, cos * dir );
+
+				s = Math.sin( s * len ) / sin;
+				t = Math.sin( t * len ) / sin;
+
+			}
+
+			const tDir = t * dir;
+
+			x0 = x0 * s + x1 * tDir;
+			y0 = y0 * s + y1 * tDir;
+			z0 = z0 * s + z1 * tDir;
+			w0 = w0 * s + w1 * tDir;
+
+			// Normalize in case we just did a lerp:
+			if ( s === 1 - t ) {
+
+				const f = 1 / Math.sqrt( x0 * x0 + y0 * y0 + z0 * z0 + w0 * w0 );
+
+				x0 *= f;
+				y0 *= f;
+				z0 *= f;
+				w0 *= f;
+
+			}
+
+		}
+
+		dst[ dstOffset ] = x0;
+		dst[ dstOffset + 1 ] = y0;
+		dst[ dstOffset + 2 ] = z0;
+		dst[ dstOffset + 3 ] = w0;
+
+	}
+
+	static multiplyQuaternionsFlat( dst, dstOffset, src0, srcOffset0, src1, srcOffset1 ) {
+
+		const x0 = src0[ srcOffset0 ];
+		const y0 = src0[ srcOffset0 + 1 ];
+		const z0 = src0[ srcOffset0 + 2 ];
+		const w0 = src0[ srcOffset0 + 3 ];
+
+		const x1 = src1[ srcOffset1 ];
+		const y1 = src1[ srcOffset1 + 1 ];
+		const z1 = src1[ srcOffset1 + 2 ];
+		const w1 = src1[ srcOffset1 + 3 ];
+
+		dst[ dstOffset ] = x0 * w1 + w0 * x1 + y0 * z1 - z0 * y1;
+		dst[ dstOffset + 1 ] = y0 * w1 + w0 * y1 + z0 * x1 - x0 * z1;
+		dst[ dstOffset + 2 ] = z0 * w1 + w0 * z1 + x0 * y1 - y0 * x1;
+		dst[ dstOffset + 3 ] = w0 * w1 - x0 * x1 - y0 * y1 - z0 * z1;
+
+		return dst;
+
+	}
+
+	get x() {
+
+		return this._x;
+
+	}
+
+	set x( value ) {
+
+		this._x = value;
+		this._onChangeCallback();
+
+	}
+
+	get y() {
+
+		return this._y;
+
+	}
+
+	set y( value ) {
+
+		this._y = value;
+		this._onChangeCallback();
+
+	}
+
+	get z() {
+
+		return this._z;
+
+	}
+
+	set z( value ) {
+
+		this._z = value;
+		this._onChangeCallback();
+
+	}
+
+	get w() {
+
+		return this._w;
+
+	}
+
+	set w( value ) {
+
+		this._w = value;
+		this._onChangeCallback();
+
+	}
+
+	set( x, y, z, w ) {
+
+		this._x = x;
+		this._y = y;
+		this._z = z;
+		this._w = w;
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new this.constructor( this._x, this._y, this._z, this._w );
+
+	}
+
+	copy( quaternion ) {
+
+		this._x = quaternion.x;
+		this._y = quaternion.y;
+		this._z = quaternion.z;
+		this._w = quaternion.w;
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	setFromEuler( euler, update = true ) {
+
+		const x = euler._x, y = euler._y, z = euler._z, order = euler._order;
+
+		// http://www.mathworks.com/matlabcentral/fileexchange/
+		// 	20696-function-to-convert-between-dcm-euler-angles-quaternions-and-euler-vectors/
+		//	content/SpinCalc.m
+
+		const cos = Math.cos;
+		const sin = Math.sin;
+
+		const c1 = cos( x / 2 );
+		const c2 = cos( y / 2 );
+		const c3 = cos( z / 2 );
+
+		const s1 = sin( x / 2 );
+		const s2 = sin( y / 2 );
+		const s3 = sin( z / 2 );
+
+		switch ( order ) {
+
+			case 'XYZ':
+				this._x = s1 * c2 * c3 + c1 * s2 * s3;
+				this._y = c1 * s2 * c3 - s1 * c2 * s3;
+				this._z = c1 * c2 * s3 + s1 * s2 * c3;
+				this._w = c1 * c2 * c3 - s1 * s2 * s3;
+				break;
+
+			case 'YXZ':
+				this._x = s1 * c2 * c3 + c1 * s2 * s3;
+				this._y = c1 * s2 * c3 - s1 * c2 * s3;
+				this._z = c1 * c2 * s3 - s1 * s2 * c3;
+				this._w = c1 * c2 * c3 + s1 * s2 * s3;
+				break;
+
+			case 'ZXY':
+				this._x = s1 * c2 * c3 - c1 * s2 * s3;
+				this._y = c1 * s2 * c3 + s1 * c2 * s3;
+				this._z = c1 * c2 * s3 + s1 * s2 * c3;
+				this._w = c1 * c2 * c3 - s1 * s2 * s3;
+				break;
+
+			case 'ZYX':
+				this._x = s1 * c2 * c3 - c1 * s2 * s3;
+				this._y = c1 * s2 * c3 + s1 * c2 * s3;
+				this._z = c1 * c2 * s3 - s1 * s2 * c3;
+				this._w = c1 * c2 * c3 + s1 * s2 * s3;
+				break;
+
+			case 'YZX':
+				this._x = s1 * c2 * c3 + c1 * s2 * s3;
+				this._y = c1 * s2 * c3 + s1 * c2 * s3;
+				this._z = c1 * c2 * s3 - s1 * s2 * c3;
+				this._w = c1 * c2 * c3 - s1 * s2 * s3;
+				break;
+
+			case 'XZY':
+				this._x = s1 * c2 * c3 - c1 * s2 * s3;
+				this._y = c1 * s2 * c3 - s1 * c2 * s3;
+				this._z = c1 * c2 * s3 + s1 * s2 * c3;
+				this._w = c1 * c2 * c3 + s1 * s2 * s3;
+				break;
+
+			default:
+				console.warn( 'THREE.Quaternion: .setFromEuler() encountered an unknown order: ' + order );
+
+		}
+
+		if ( update === true ) this._onChangeCallback();
+
+		return this;
+
+	}
+
+	setFromAxisAngle( axis, angle ) {
+
+		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/angleToQuaternion/index.htm
+
+		// assumes axis is normalized
+
+		const halfAngle = angle / 2, s = Math.sin( halfAngle );
+
+		this._x = axis.x * s;
+		this._y = axis.y * s;
+		this._z = axis.z * s;
+		this._w = Math.cos( halfAngle );
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	setFromRotationMatrix( m ) {
+
+		// http://www.euclideanspace.com/maths/geometry/rotations/conversions/matrixToQuaternion/index.htm
+
+		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+
+		const te = m.elements,
+
+			m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ],
+			m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ],
+			m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ],
+
+			trace = m11 + m22 + m33;
+
+		if ( trace > 0 ) {
+
+			const s = 0.5 / Math.sqrt( trace + 1.0 );
+
+			this._w = 0.25 / s;
+			this._x = ( m32 - m23 ) * s;
+			this._y = ( m13 - m31 ) * s;
+			this._z = ( m21 - m12 ) * s;
+
+		} else if ( m11 > m22 && m11 > m33 ) {
+
+			const s = 2.0 * Math.sqrt( 1.0 + m11 - m22 - m33 );
+
+			this._w = ( m32 - m23 ) / s;
+			this._x = 0.25 * s;
+			this._y = ( m12 + m21 ) / s;
+			this._z = ( m13 + m31 ) / s;
+
+		} else if ( m22 > m33 ) {
+
+			const s = 2.0 * Math.sqrt( 1.0 + m22 - m11 - m33 );
+
+			this._w = ( m13 - m31 ) / s;
+			this._x = ( m12 + m21 ) / s;
+			this._y = 0.25 * s;
+			this._z = ( m23 + m32 ) / s;
+
+		} else {
+
+			const s = 2.0 * Math.sqrt( 1.0 + m33 - m11 - m22 );
+
+			this._w = ( m21 - m12 ) / s;
+			this._x = ( m13 + m31 ) / s;
+			this._y = ( m23 + m32 ) / s;
+			this._z = 0.25 * s;
+
+		}
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	setFromUnitVectors( vFrom, vTo ) {
+
+		// assumes direction vectors vFrom and vTo are normalized
+
+		let r = vFrom.dot( vTo ) + 1;
+
+		if ( r < Number.EPSILON ) {
+
+			// vFrom and vTo point in opposite directions
+
+			r = 0;
+
+			if ( Math.abs( vFrom.x ) > Math.abs( vFrom.z ) ) {
+
+				this._x = - vFrom.y;
+				this._y = vFrom.x;
+				this._z = 0;
+				this._w = r;
+
+			} else {
+
+				this._x = 0;
+				this._y = - vFrom.z;
+				this._z = vFrom.y;
+				this._w = r;
+
+			}
+
+		} else {
+
+			// crossVectors( vFrom, vTo ); // inlined to avoid cyclic dependency on Vector3
+
+			this._x = vFrom.y * vTo.z - vFrom.z * vTo.y;
+			this._y = vFrom.z * vTo.x - vFrom.x * vTo.z;
+			this._z = vFrom.x * vTo.y - vFrom.y * vTo.x;
+			this._w = r;
+
+		}
+
+		return this.normalize();
+
+	}
+
+	angleTo( q ) {
+
+		return 2 * Math.acos( Math.abs( clamp( this.dot( q ), - 1, 1 ) ) );
+
+	}
+
+	rotateTowards( q, step ) {
+
+		const angle = this.angleTo( q );
+
+		if ( angle === 0 ) return this;
+
+		const t = Math.min( 1, step / angle );
+
+		this.slerp( q, t );
+
+		return this;
+
+	}
+
+	identity() {
+
+		return this.set( 0, 0, 0, 1 );
+
+	}
+
+	invert() {
+
+		// quaternion is assumed to have unit length
+
+		return this.conjugate();
+
+	}
+
+	conjugate() {
+
+		this._x *= - 1;
+		this._y *= - 1;
+		this._z *= - 1;
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	dot( v ) {
+
+		return this._x * v._x + this._y * v._y + this._z * v._z + this._w * v._w;
+
+	}
+
+	lengthSq() {
+
+		return this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w;
+
+	}
+
+	length() {
+
+		return Math.sqrt( this._x * this._x + this._y * this._y + this._z * this._z + this._w * this._w );
+
+	}
+
+	normalize() {
+
+		let l = this.length();
+
+		if ( l === 0 ) {
+
+			this._x = 0;
+			this._y = 0;
+			this._z = 0;
+			this._w = 1;
+
+		} else {
+
+			l = 1 / l;
+
+			this._x = this._x * l;
+			this._y = this._y * l;
+			this._z = this._z * l;
+			this._w = this._w * l;
+
+		}
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	multiply( q ) {
+
+		return this.multiplyQuaternions( this, q );
+
+	}
+
+	premultiply( q ) {
+
+		return this.multiplyQuaternions( q, this );
+
+	}
+
+	multiplyQuaternions( a, b ) {
+
+		// from http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/code/index.htm
+
+		const qax = a._x, qay = a._y, qaz = a._z, qaw = a._w;
+		const qbx = b._x, qby = b._y, qbz = b._z, qbw = b._w;
+
+		this._x = qax * qbw + qaw * qbx + qay * qbz - qaz * qby;
+		this._y = qay * qbw + qaw * qby + qaz * qbx - qax * qbz;
+		this._z = qaz * qbw + qaw * qbz + qax * qby - qay * qbx;
+		this._w = qaw * qbw - qax * qbx - qay * qby - qaz * qbz;
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	slerp( qb, t ) {
+
+		if ( t === 0 ) return this;
+		if ( t === 1 ) return this.copy( qb );
+
+		const x = this._x, y = this._y, z = this._z, w = this._w;
+
+		// http://www.euclideanspace.com/maths/algebra/realNormedAlgebra/quaternions/slerp/
+
+		let cosHalfTheta = w * qb._w + x * qb._x + y * qb._y + z * qb._z;
+
+		if ( cosHalfTheta < 0 ) {
+
+			this._w = - qb._w;
+			this._x = - qb._x;
+			this._y = - qb._y;
+			this._z = - qb._z;
+
+			cosHalfTheta = - cosHalfTheta;
+
+		} else {
+
+			this.copy( qb );
+
+		}
+
+		if ( cosHalfTheta >= 1.0 ) {
+
+			this._w = w;
+			this._x = x;
+			this._y = y;
+			this._z = z;
+
+			return this;
+
+		}
+
+		const sqrSinHalfTheta = 1.0 - cosHalfTheta * cosHalfTheta;
+
+		if ( sqrSinHalfTheta <= Number.EPSILON ) {
+
+			const s = 1 - t;
+			this._w = s * w + t * this._w;
+			this._x = s * x + t * this._x;
+			this._y = s * y + t * this._y;
+			this._z = s * z + t * this._z;
+
+			this.normalize(); // normalize calls _onChangeCallback()
+
+			return this;
+
+		}
+
+		const sinHalfTheta = Math.sqrt( sqrSinHalfTheta );
+		const halfTheta = Math.atan2( sinHalfTheta, cosHalfTheta );
+		const ratioA = Math.sin( ( 1 - t ) * halfTheta ) / sinHalfTheta,
+			ratioB = Math.sin( t * halfTheta ) / sinHalfTheta;
+
+		this._w = ( w * ratioA + this._w * ratioB );
+		this._x = ( x * ratioA + this._x * ratioB );
+		this._y = ( y * ratioA + this._y * ratioB );
+		this._z = ( z * ratioA + this._z * ratioB );
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	slerpQuaternions( qa, qb, t ) {
+
+		return this.copy( qa ).slerp( qb, t );
+
+	}
+
+	random() {
+
+		// sets this quaternion to a uniform random unit quaternnion
+
+		// Ken Shoemake
+		// Uniform random rotations
+		// D. Kirk, editor, Graphics Gems III, pages 124-132. Academic Press, New York, 1992.
+
+		const theta1 = 2 * Math.PI * Math.random();
+		const theta2 = 2 * Math.PI * Math.random();
+
+		const x0 = Math.random();
+		const r1 = Math.sqrt( 1 - x0 );
+		const r2 = Math.sqrt( x0 );
+
+		return this.set(
+			r1 * Math.sin( theta1 ),
+			r1 * Math.cos( theta1 ),
+			r2 * Math.sin( theta2 ),
+			r2 * Math.cos( theta2 ),
+		);
+
+	}
+
+	equals( quaternion ) {
+
+		return ( quaternion._x === this._x ) && ( quaternion._y === this._y ) && ( quaternion._z === this._z ) && ( quaternion._w === this._w );
+
+	}
+
+	fromArray( array, offset = 0 ) {
+
+		this._x = array[ offset ];
+		this._y = array[ offset + 1 ];
+		this._z = array[ offset + 2 ];
+		this._w = array[ offset + 3 ];
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	toArray( array = [], offset = 0 ) {
+
+		array[ offset ] = this._x;
+		array[ offset + 1 ] = this._y;
+		array[ offset + 2 ] = this._z;
+		array[ offset + 3 ] = this._w;
+
+		return array;
+
+	}
+
+	fromBufferAttribute( attribute, index ) {
+
+		this._x = attribute.getX( index );
+		this._y = attribute.getY( index );
+		this._z = attribute.getZ( index );
+		this._w = attribute.getW( index );
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		return this.toArray();
+
+	}
+
+	_onChange( callback ) {
+
+		this._onChangeCallback = callback;
+
+		return this;
+
+	}
+
+	_onChangeCallback() {}
+
+	*[ Symbol.iterator ]() {
+
+		yield this._x;
+		yield this._y;
+		yield this._z;
+		yield this._w;
+
+	}
+
+}
+
+class Vector3 {
+
+	constructor( x = 0, y = 0, z = 0 ) {
+
+		Vector3.prototype.isVector3 = true;
+
+		this.x = x;
+		this.y = y;
+		this.z = z;
+
+	}
+
+	set( x, y, z ) {
+
+		if ( z === undefined ) z = this.z; // sprite.scale.set(x,y)
+
+		this.x = x;
+		this.y = y;
+		this.z = z;
+
+		return this;
+
+	}
+
+	setScalar( scalar ) {
+
+		this.x = scalar;
+		this.y = scalar;
+		this.z = scalar;
+
+		return this;
+
+	}
+
+	setX( x ) {
+
+		this.x = x;
+
+		return this;
+
+	}
+
+	setY( y ) {
+
+		this.y = y;
+
+		return this;
+
+	}
+
+	setZ( z ) {
+
+		this.z = z;
+
+		return this;
+
+	}
+
+	setComponent( index, value ) {
+
+		switch ( index ) {
+
+			case 0: this.x = value; break;
+			case 1: this.y = value; break;
+			case 2: this.z = value; break;
+			default: throw new Error( 'index is out of range: ' + index );
+
+		}
+
+		return this;
+
+	}
+
+	getComponent( index ) {
+
+		switch ( index ) {
+
+			case 0: return this.x;
+			case 1: return this.y;
+			case 2: return this.z;
+			default: throw new Error( 'index is out of range: ' + index );
+
+		}
+
+	}
+
+	clone() {
+
+		return new this.constructor( this.x, this.y, this.z );
+
+	}
+
+	copy( v ) {
+
+		this.x = v.x;
+		this.y = v.y;
+		this.z = v.z;
+
+		return this;
+
+	}
+
+	add( v ) {
+
+		this.x += v.x;
+		this.y += v.y;
+		this.z += v.z;
+
+		return this;
+
+	}
+
+	addScalar( s ) {
+
+		this.x += s;
+		this.y += s;
+		this.z += s;
+
+		return this;
+
+	}
+
+	addVectors( a, b ) {
+
+		this.x = a.x + b.x;
+		this.y = a.y + b.y;
+		this.z = a.z + b.z;
+
+		return this;
+
+	}
+
+	addScaledVector( v, s ) {
+
+		this.x += v.x * s;
+		this.y += v.y * s;
+		this.z += v.z * s;
+
+		return this;
+
+	}
+
+	sub( v ) {
+
+		this.x -= v.x;
+		this.y -= v.y;
+		this.z -= v.z;
+
+		return this;
+
+	}
+
+	subScalar( s ) {
+
+		this.x -= s;
+		this.y -= s;
+		this.z -= s;
+
+		return this;
+
+	}
+
+	subVectors( a, b ) {
+
+		this.x = a.x - b.x;
+		this.y = a.y - b.y;
+		this.z = a.z - b.z;
+
+		return this;
+
+	}
+
+	multiply( v ) {
+
+		this.x *= v.x;
+		this.y *= v.y;
+		this.z *= v.z;
+
+		return this;
+
+	}
+
+	multiplyScalar( scalar ) {
+
+		this.x *= scalar;
+		this.y *= scalar;
+		this.z *= scalar;
+
+		return this;
+
+	}
+
+	multiplyVectors( a, b ) {
+
+		this.x = a.x * b.x;
+		this.y = a.y * b.y;
+		this.z = a.z * b.z;
+
+		return this;
+
+	}
+
+	applyEuler( euler ) {
+
+		return this.applyQuaternion( _quaternion$4.setFromEuler( euler ) );
+
+	}
+
+	applyAxisAngle( axis, angle ) {
+
+		return this.applyQuaternion( _quaternion$4.setFromAxisAngle( axis, angle ) );
+
+	}
+
+	applyMatrix3( m ) {
+
+		const x = this.x, y = this.y, z = this.z;
+		const e = m.elements;
+
+		this.x = e[ 0 ] * x + e[ 3 ] * y + e[ 6 ] * z;
+		this.y = e[ 1 ] * x + e[ 4 ] * y + e[ 7 ] * z;
+		this.z = e[ 2 ] * x + e[ 5 ] * y + e[ 8 ] * z;
+
+		return this;
+
+	}
+
+	applyNormalMatrix( m ) {
+
+		return this.applyMatrix3( m ).normalize();
+
+	}
+
+	applyMatrix4( m ) {
+
+		const x = this.x, y = this.y, z = this.z;
+		const e = m.elements;
+
+		const w = 1 / ( e[ 3 ] * x + e[ 7 ] * y + e[ 11 ] * z + e[ 15 ] );
+
+		this.x = ( e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z + e[ 12 ] ) * w;
+		this.y = ( e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z + e[ 13 ] ) * w;
+		this.z = ( e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z + e[ 14 ] ) * w;
+
+		return this;
+
+	}
+
+	applyQuaternion( q ) {
+
+		// quaternion q is assumed to have unit length
+
+		const vx = this.x, vy = this.y, vz = this.z;
+		const qx = q.x, qy = q.y, qz = q.z, qw = q.w;
+
+		// t = 2 * cross( q.xyz, v );
+		const tx = 2 * ( qy * vz - qz * vy );
+		const ty = 2 * ( qz * vx - qx * vz );
+		const tz = 2 * ( qx * vy - qy * vx );
+
+		// v + q.w * t + cross( q.xyz, t );
+		this.x = vx + qw * tx + qy * tz - qz * ty;
+		this.y = vy + qw * ty + qz * tx - qx * tz;
+		this.z = vz + qw * tz + qx * ty - qy * tx;
+
+		return this;
+
+	}
+
+	project( camera ) {
+
+		return this.applyMatrix4( camera.matrixWorldInverse ).applyMatrix4( camera.projectionMatrix );
+
+	}
+
+	unproject( camera ) {
+
+		return this.applyMatrix4( camera.projectionMatrixInverse ).applyMatrix4( camera.matrixWorld );
+
+	}
+
+	transformDirection( m ) {
+
+		// input: THREE.Matrix4 affine matrix
+		// vector interpreted as a direction
+
+		const x = this.x, y = this.y, z = this.z;
+		const e = m.elements;
+
+		this.x = e[ 0 ] * x + e[ 4 ] * y + e[ 8 ] * z;
+		this.y = e[ 1 ] * x + e[ 5 ] * y + e[ 9 ] * z;
+		this.z = e[ 2 ] * x + e[ 6 ] * y + e[ 10 ] * z;
+
+		return this.normalize();
+
+	}
+
+	divide( v ) {
+
+		this.x /= v.x;
+		this.y /= v.y;
+		this.z /= v.z;
+
+		return this;
+
+	}
+
+	divideScalar( scalar ) {
+
+		return this.multiplyScalar( 1 / scalar );
+
+	}
+
+	min( v ) {
+
+		this.x = Math.min( this.x, v.x );
+		this.y = Math.min( this.y, v.y );
+		this.z = Math.min( this.z, v.z );
+
+		return this;
+
+	}
+
+	max( v ) {
+
+		this.x = Math.max( this.x, v.x );
+		this.y = Math.max( this.y, v.y );
+		this.z = Math.max( this.z, v.z );
+
+		return this;
+
+	}
+
+	clamp( min, max ) {
+
+		// assumes min < max, componentwise
+
+		this.x = Math.max( min.x, Math.min( max.x, this.x ) );
+		this.y = Math.max( min.y, Math.min( max.y, this.y ) );
+		this.z = Math.max( min.z, Math.min( max.z, this.z ) );
+
+		return this;
+
+	}
+
+	clampScalar( minVal, maxVal ) {
+
+		this.x = Math.max( minVal, Math.min( maxVal, this.x ) );
+		this.y = Math.max( minVal, Math.min( maxVal, this.y ) );
+		this.z = Math.max( minVal, Math.min( maxVal, this.z ) );
+
+		return this;
+
+	}
+
+	clampLength( min, max ) {
+
+		const length = this.length();
+
+		return this.divideScalar( length || 1 ).multiplyScalar( Math.max( min, Math.min( max, length ) ) );
+
+	}
+
+	floor() {
+
+		this.x = Math.floor( this.x );
+		this.y = Math.floor( this.y );
+		this.z = Math.floor( this.z );
+
+		return this;
+
+	}
+
+	ceil() {
+
+		this.x = Math.ceil( this.x );
+		this.y = Math.ceil( this.y );
+		this.z = Math.ceil( this.z );
+
+		return this;
+
+	}
+
+	round() {
+
+		this.x = Math.round( this.x );
+		this.y = Math.round( this.y );
+		this.z = Math.round( this.z );
+
+		return this;
+
+	}
+
+	roundToZero() {
+
+		this.x = Math.trunc( this.x );
+		this.y = Math.trunc( this.y );
+		this.z = Math.trunc( this.z );
+
+		return this;
+
+	}
+
+	negate() {
+
+		this.x = - this.x;
+		this.y = - this.y;
+		this.z = - this.z;
+
+		return this;
+
+	}
+
+	dot( v ) {
+
+		return this.x * v.x + this.y * v.y + this.z * v.z;
+
+	}
+
+	// TODO lengthSquared?
+
+	lengthSq() {
+
+		return this.x * this.x + this.y * this.y + this.z * this.z;
+
+	}
+
+	length() {
+
+		return Math.sqrt( this.x * this.x + this.y * this.y + this.z * this.z );
+
+	}
+
+	manhattanLength() {
+
+		return Math.abs( this.x ) + Math.abs( this.y ) + Math.abs( this.z );
+
+	}
+
+	normalize() {
+
+		return this.divideScalar( this.length() || 1 );
+
+	}
+
+	setLength( length ) {
+
+		return this.normalize().multiplyScalar( length );
+
+	}
+
+	lerp( v, alpha ) {
+
+		this.x += ( v.x - this.x ) * alpha;
+		this.y += ( v.y - this.y ) * alpha;
+		this.z += ( v.z - this.z ) * alpha;
+
+		return this;
+
+	}
+
+	lerpVectors( v1, v2, alpha ) {
+
+		this.x = v1.x + ( v2.x - v1.x ) * alpha;
+		this.y = v1.y + ( v2.y - v1.y ) * alpha;
+		this.z = v1.z + ( v2.z - v1.z ) * alpha;
+
+		return this;
+
+	}
+
+	cross( v ) {
+
+		return this.crossVectors( this, v );
+
+	}
+
+	crossVectors( a, b ) {
+
+		const ax = a.x, ay = a.y, az = a.z;
+		const bx = b.x, by = b.y, bz = b.z;
+
+		this.x = ay * bz - az * by;
+		this.y = az * bx - ax * bz;
+		this.z = ax * by - ay * bx;
+
+		return this;
+
+	}
+
+	projectOnVector( v ) {
+
+		const denominator = v.lengthSq();
+
+		if ( denominator === 0 ) return this.set( 0, 0, 0 );
+
+		const scalar = v.dot( this ) / denominator;
+
+		return this.copy( v ).multiplyScalar( scalar );
+
+	}
+
+	projectOnPlane( planeNormal ) {
+
+		_vector$c.copy( this ).projectOnVector( planeNormal );
+
+		return this.sub( _vector$c );
+
+	}
+
+	reflect( normal ) {
+
+		// reflect incident vector off plane orthogonal to normal
+		// normal is assumed to have unit length
+
+		return this.sub( _vector$c.copy( normal ).multiplyScalar( 2 * this.dot( normal ) ) );
+
+	}
+
+	angleTo( v ) {
+
+		const denominator = Math.sqrt( this.lengthSq() * v.lengthSq() );
+
+		if ( denominator === 0 ) return Math.PI / 2;
+
+		const theta = this.dot( v ) / denominator;
+
+		// clamp, to handle numerical problems
+
+		return Math.acos( clamp( theta, - 1, 1 ) );
+
+	}
+
+	distanceTo( v ) {
+
+		return Math.sqrt( this.distanceToSquared( v ) );
+
+	}
+
+	distanceToSquared( v ) {
+
+		const dx = this.x - v.x, dy = this.y - v.y, dz = this.z - v.z;
+
+		return dx * dx + dy * dy + dz * dz;
+
+	}
+
+	manhattanDistanceTo( v ) {
+
+		return Math.abs( this.x - v.x ) + Math.abs( this.y - v.y ) + Math.abs( this.z - v.z );
+
+	}
+
+	setFromSpherical( s ) {
+
+		return this.setFromSphericalCoords( s.radius, s.phi, s.theta );
+
+	}
+
+	setFromSphericalCoords( radius, phi, theta ) {
+
+		const sinPhiRadius = Math.sin( phi ) * radius;
+
+		this.x = sinPhiRadius * Math.sin( theta );
+		this.y = Math.cos( phi ) * radius;
+		this.z = sinPhiRadius * Math.cos( theta );
+
+		return this;
+
+	}
+
+	setFromCylindrical( c ) {
+
+		return this.setFromCylindricalCoords( c.radius, c.theta, c.y );
+
+	}
+
+	setFromCylindricalCoords( radius, theta, y ) {
+
+		this.x = radius * Math.sin( theta );
+		this.y = y;
+		this.z = radius * Math.cos( theta );
+
+		return this;
+
+	}
+
+	setFromMatrixPosition( m ) {
+
+		const e = m.elements;
+
+		this.x = e[ 12 ];
+		this.y = e[ 13 ];
+		this.z = e[ 14 ];
+
+		return this;
+
+	}
+
+	setFromMatrixScale( m ) {
+
+		const sx = this.setFromMatrixColumn( m, 0 ).length();
+		const sy = this.setFromMatrixColumn( m, 1 ).length();
+		const sz = this.setFromMatrixColumn( m, 2 ).length();
+
+		this.x = sx;
+		this.y = sy;
+		this.z = sz;
+
+		return this;
+
+	}
+
+	setFromMatrixColumn( m, index ) {
+
+		return this.fromArray( m.elements, index * 4 );
+
+	}
+
+	setFromMatrix3Column( m, index ) {
+
+		return this.fromArray( m.elements, index * 3 );
+
+	}
+
+	setFromEuler( e ) {
+
+		this.x = e._x;
+		this.y = e._y;
+		this.z = e._z;
+
+		return this;
+
+	}
+
+	setFromColor( c ) {
+
+		this.x = c.r;
+		this.y = c.g;
+		this.z = c.b;
+
+		return this;
+
+	}
+
+	equals( v ) {
+
+		return ( ( v.x === this.x ) && ( v.y === this.y ) && ( v.z === this.z ) );
+
+	}
+
+	fromArray( array, offset = 0 ) {
+
+		this.x = array[ offset ];
+		this.y = array[ offset + 1 ];
+		this.z = array[ offset + 2 ];
+
+		return this;
+
+	}
+
+	toArray( array = [], offset = 0 ) {
+
+		array[ offset ] = this.x;
+		array[ offset + 1 ] = this.y;
+		array[ offset + 2 ] = this.z;
+
+		return array;
+
+	}
+
+	fromBufferAttribute( attribute, index ) {
+
+		this.x = attribute.getX( index );
+		this.y = attribute.getY( index );
+		this.z = attribute.getZ( index );
+
+		return this;
+
+	}
+
+	random() {
+
+		this.x = Math.random();
+		this.y = Math.random();
+		this.z = Math.random();
+
+		return this;
+
+	}
+
+	randomDirection() {
+
+		// https://mathworld.wolfram.com/SpherePointPicking.html
+
+		const theta = Math.random() * Math.PI * 2;
+		const u = Math.random() * 2 - 1;
+		const c = Math.sqrt( 1 - u * u );
+
+		this.x = c * Math.cos( theta );
+		this.y = u;
+		this.z = c * Math.sin( theta );
+
+		return this;
+
+	}
+
+	*[ Symbol.iterator ]() {
+
+		yield this.x;
+		yield this.y;
+		yield this.z;
+
+	}
+
+}
+
+const _vector$c = /*@__PURE__*/ new Vector3();
+const _quaternion$4 = /*@__PURE__*/ new Quaternion();
+
+class Box3 {
+
+	constructor( min = new Vector3( + Infinity, + Infinity, + Infinity ), max = new Vector3( - Infinity, - Infinity, - Infinity ) ) {
+
+		this.isBox3 = true;
+
+		this.min = min;
+		this.max = max;
+
+	}
+
+	set( min, max ) {
+
+		this.min.copy( min );
+		this.max.copy( max );
+
+		return this;
+
+	}
+
+	setFromArray( array ) {
+
+		this.makeEmpty();
+
+		for ( let i = 0, il = array.length; i < il; i += 3 ) {
+
+			this.expandByPoint( _vector$b.fromArray( array, i ) );
+
+		}
+
+		return this;
+
+	}
+
+	setFromBufferAttribute( attribute ) {
+
+		this.makeEmpty();
+
+		for ( let i = 0, il = attribute.count; i < il; i ++ ) {
+
+			this.expandByPoint( _vector$b.fromBufferAttribute( attribute, i ) );
+
+		}
+
+		return this;
+
+	}
+
+	setFromPoints( points ) {
+
+		this.makeEmpty();
+
+		for ( let i = 0, il = points.length; i < il; i ++ ) {
+
+			this.expandByPoint( points[ i ] );
+
+		}
+
+		return this;
+
+	}
+
+	setFromCenterAndSize( center, size ) {
+
+		const halfSize = _vector$b.copy( size ).multiplyScalar( 0.5 );
+
+		this.min.copy( center ).sub( halfSize );
+		this.max.copy( center ).add( halfSize );
+
+		return this;
+
+	}
+
+	setFromObject( object, precise = false ) {
+
+		this.makeEmpty();
+
+		return this.expandByObject( object, precise );
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+	copy( box ) {
+
+		this.min.copy( box.min );
+		this.max.copy( box.max );
+
+		return this;
+
+	}
+
+	makeEmpty() {
+
+		this.min.x = this.min.y = this.min.z = + Infinity;
+		this.max.x = this.max.y = this.max.z = - Infinity;
+
+		return this;
+
+	}
+
+	isEmpty() {
+
+		// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
+
+		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y ) || ( this.max.z < this.min.z );
+
+	}
+
+	getCenter( target ) {
+
+		return this.isEmpty() ? target.set( 0, 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );
+
+	}
+
+	getSize( target ) {
+
+		return this.isEmpty() ? target.set( 0, 0, 0 ) : target.subVectors( this.max, this.min );
+
+	}
+
+	expandByPoint( point ) {
+
+		this.min.min( point );
+		this.max.max( point );
+
+		return this;
+
+	}
+
+	expandByVector( vector ) {
+
+		this.min.sub( vector );
+		this.max.add( vector );
+
+		return this;
+
+	}
+
+	expandByScalar( scalar ) {
+
+		this.min.addScalar( - scalar );
+		this.max.addScalar( scalar );
+
+		return this;
+
+	}
+
+	expandByObject( object, precise = false ) {
+
+		// Computes the world-axis-aligned bounding box of an object (including its children),
+		// accounting for both the object's, and children's, world transforms
+
+		object.updateWorldMatrix( false, false );
+
+		const geometry = object.geometry;
+
+		if ( geometry !== undefined ) {
+
+			const positionAttribute = geometry.getAttribute( 'position' );
+
+			// precise AABB computation based on vertex data requires at least a position attribute.
+			// instancing isn't supported so far and uses the normal (conservative) code path.
+
+			if ( precise === true && positionAttribute !== undefined && object.isInstancedMesh !== true ) {
+
+				for ( let i = 0, l = positionAttribute.count; i < l; i ++ ) {
+
+					if ( object.isMesh === true ) {
+
+						object.getVertexPosition( i, _vector$b );
+
+					} else {
+
+						_vector$b.fromBufferAttribute( positionAttribute, i );
+
+					}
+
+					_vector$b.applyMatrix4( object.matrixWorld );
+					this.expandByPoint( _vector$b );
+
+				}
+
+			} else {
+
+				if ( object.boundingBox !== undefined ) {
+
+					// object-level bounding box
+
+					if ( object.boundingBox === null ) {
+
+						object.computeBoundingBox();
+
+					}
+
+					_box$4.copy( object.boundingBox );
+
+
+				} else {
+
+					// geometry-level bounding box
+
+					if ( geometry.boundingBox === null ) {
+
+						geometry.computeBoundingBox();
+
+					}
+
+					_box$4.copy( geometry.boundingBox );
+
+				}
+
+				_box$4.applyMatrix4( object.matrixWorld );
+
+				this.union( _box$4 );
+
+			}
+
+		}
+
+		const children = object.children;
+
+		for ( let i = 0, l = children.length; i < l; i ++ ) {
+
+			this.expandByObject( children[ i ], precise );
+
+		}
+
+		return this;
+
+	}
+
+	containsPoint( point ) {
+
+		return point.x >= this.min.x && point.x <= this.max.x &&
+			point.y >= this.min.y && point.y <= this.max.y &&
+			point.z >= this.min.z && point.z <= this.max.z;
+
+	}
+
+	containsBox( box ) {
+
+		return this.min.x <= box.min.x && box.max.x <= this.max.x &&
+			this.min.y <= box.min.y && box.max.y <= this.max.y &&
+			this.min.z <= box.min.z && box.max.z <= this.max.z;
+
+	}
+
+	getParameter( point, target ) {
+
+		// This can potentially have a divide by zero if the box
+		// has a size dimension of 0.
+
+		return target.set(
+			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
+			( point.y - this.min.y ) / ( this.max.y - this.min.y ),
+			( point.z - this.min.z ) / ( this.max.z - this.min.z )
+		);
+
+	}
+
+	intersectsBox( box ) {
+
+		// using 6 splitting planes to rule out intersections.
+		return box.max.x >= this.min.x && box.min.x <= this.max.x &&
+			box.max.y >= this.min.y && box.min.y <= this.max.y &&
+			box.max.z >= this.min.z && box.min.z <= this.max.z;
+
+	}
+
+	intersectsSphere( sphere ) {
+
+		// Find the point on the AABB closest to the sphere center.
+		this.clampPoint( sphere.center, _vector$b );
+
+		// If that point is inside the sphere, the AABB and sphere intersect.
+		return _vector$b.distanceToSquared( sphere.center ) <= ( sphere.radius * sphere.radius );
+
+	}
+
+	intersectsPlane( plane ) {
+
+		// We compute the minimum and maximum dot product values. If those values
+		// are on the same side (back or front) of the plane, then there is no intersection.
+
+		let min, max;
+
+		if ( plane.normal.x > 0 ) {
+
+			min = plane.normal.x * this.min.x;
+			max = plane.normal.x * this.max.x;
+
+		} else {
+
+			min = plane.normal.x * this.max.x;
+			max = plane.normal.x * this.min.x;
+
+		}
+
+		if ( plane.normal.y > 0 ) {
+
+			min += plane.normal.y * this.min.y;
+			max += plane.normal.y * this.max.y;
+
+		} else {
+
+			min += plane.normal.y * this.max.y;
+			max += plane.normal.y * this.min.y;
+
+		}
+
+		if ( plane.normal.z > 0 ) {
+
+			min += plane.normal.z * this.min.z;
+			max += plane.normal.z * this.max.z;
+
+		} else {
+
+			min += plane.normal.z * this.max.z;
+			max += plane.normal.z * this.min.z;
+
+		}
+
+		return ( min <= - plane.constant && max >= - plane.constant );
+
+	}
+
+	intersectsTriangle( triangle ) {
+
+		if ( this.isEmpty() ) {
+
+			return false;
+
+		}
+
+		// compute box center and extents
+		this.getCenter( _center );
+		_extents.subVectors( this.max, _center );
+
+		// translate triangle to aabb origin
+		_v0$3.subVectors( triangle.a, _center );
+		_v1$7.subVectors( triangle.b, _center );
+		_v2$4.subVectors( triangle.c, _center );
+
+		// compute edge vectors for triangle
+		_f0.subVectors( _v1$7, _v0$3 );
+		_f1.subVectors( _v2$4, _v1$7 );
+		_f2.subVectors( _v0$3, _v2$4 );
+
+		// test against axes that are given by cross product combinations of the edges of the triangle and the edges of the aabb
+		// make an axis testing of each of the 3 sides of the aabb against each of the 3 sides of the triangle = 9 axis of separation
+		// axis_ij = u_i x f_j (u0, u1, u2 = face normals of aabb = x,y,z axes vectors since aabb is axis aligned)
+		let axes = [
+			0, - _f0.z, _f0.y, 0, - _f1.z, _f1.y, 0, - _f2.z, _f2.y,
+			_f0.z, 0, - _f0.x, _f1.z, 0, - _f1.x, _f2.z, 0, - _f2.x,
+			- _f0.y, _f0.x, 0, - _f1.y, _f1.x, 0, - _f2.y, _f2.x, 0
+		];
+		if ( ! satForAxes( axes, _v0$3, _v1$7, _v2$4, _extents ) ) {
+
+			return false;
+
+		}
+
+		// test 3 face normals from the aabb
+		axes = [ 1, 0, 0, 0, 1, 0, 0, 0, 1 ];
+		if ( ! satForAxes( axes, _v0$3, _v1$7, _v2$4, _extents ) ) {
+
+			return false;
+
+		}
+
+		// finally testing the face normal of the triangle
+		// use already existing triangle edge vectors here
+		_triangleNormal.crossVectors( _f0, _f1 );
+		axes = [ _triangleNormal.x, _triangleNormal.y, _triangleNormal.z ];
+
+		return satForAxes( axes, _v0$3, _v1$7, _v2$4, _extents );
+
+	}
+
+	clampPoint( point, target ) {
+
+		return target.copy( point ).clamp( this.min, this.max );
+
+	}
+
+	distanceToPoint( point ) {
+
+		return this.clampPoint( point, _vector$b ).distanceTo( point );
+
+	}
+
+	getBoundingSphere( target ) {
+
+		if ( this.isEmpty() ) {
+
+			target.makeEmpty();
+
+		} else {
+
+			this.getCenter( target.center );
+
+			target.radius = this.getSize( _vector$b ).length() * 0.5;
+
+		}
+
+		return target;
+
+	}
+
+	intersect( box ) {
+
+		this.min.max( box.min );
+		this.max.min( box.max );
+
+		// ensure that if there is no overlap, the result is fully empty, not slightly empty with non-inf/+inf values that will cause subsequence intersects to erroneously return valid values.
+		if ( this.isEmpty() ) this.makeEmpty();
+
+		return this;
+
+	}
+
+	union( box ) {
+
+		this.min.min( box.min );
+		this.max.max( box.max );
+
+		return this;
+
+	}
+
+	applyMatrix4( matrix ) {
+
+		// transform of empty box is an empty box.
+		if ( this.isEmpty() ) return this;
+
+		// NOTE: I am using a binary pattern to specify all 2^3 combinations below
+		_points[ 0 ].set( this.min.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 000
+		_points[ 1 ].set( this.min.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 001
+		_points[ 2 ].set( this.min.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 010
+		_points[ 3 ].set( this.min.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 011
+		_points[ 4 ].set( this.max.x, this.min.y, this.min.z ).applyMatrix4( matrix ); // 100
+		_points[ 5 ].set( this.max.x, this.min.y, this.max.z ).applyMatrix4( matrix ); // 101
+		_points[ 6 ].set( this.max.x, this.max.y, this.min.z ).applyMatrix4( matrix ); // 110
+		_points[ 7 ].set( this.max.x, this.max.y, this.max.z ).applyMatrix4( matrix ); // 111
+
+		this.setFromPoints( _points );
+
+		return this;
+
+	}
+
+	translate( offset ) {
+
+		this.min.add( offset );
+		this.max.add( offset );
+
+		return this;
+
+	}
+
+	equals( box ) {
+
+		return box.min.equals( this.min ) && box.max.equals( this.max );
+
+	}
+
+}
+
+const _points = [
+	/*@__PURE__*/ new Vector3(),
+	/*@__PURE__*/ new Vector3(),
+	/*@__PURE__*/ new Vector3(),
+	/*@__PURE__*/ new Vector3(),
+	/*@__PURE__*/ new Vector3(),
+	/*@__PURE__*/ new Vector3(),
+	/*@__PURE__*/ new Vector3(),
+	/*@__PURE__*/ new Vector3()
+];
+
+const _vector$b = /*@__PURE__*/ new Vector3();
+
+const _box$4 = /*@__PURE__*/ new Box3();
+
+// triangle centered vertices
+
+const _v0$3 = /*@__PURE__*/ new Vector3();
+const _v1$7 = /*@__PURE__*/ new Vector3();
+const _v2$4 = /*@__PURE__*/ new Vector3();
+
+// triangle edge vectors
+
+const _f0 = /*@__PURE__*/ new Vector3();
+const _f1 = /*@__PURE__*/ new Vector3();
+const _f2 = /*@__PURE__*/ new Vector3();
+
+const _center = /*@__PURE__*/ new Vector3();
+const _extents = /*@__PURE__*/ new Vector3();
+const _triangleNormal = /*@__PURE__*/ new Vector3();
+const _testAxis = /*@__PURE__*/ new Vector3();
+
+function satForAxes( axes, v0, v1, v2, extents ) {
+
+	for ( let i = 0, j = axes.length - 3; i <= j; i += 3 ) {
+
+		_testAxis.fromArray( axes, i );
+		// project the aabb onto the separating axis
+		const r = extents.x * Math.abs( _testAxis.x ) + extents.y * Math.abs( _testAxis.y ) + extents.z * Math.abs( _testAxis.z );
+		// project all 3 vertices of the triangle onto the separating axis
+		const p0 = v0.dot( _testAxis );
+		const p1 = v1.dot( _testAxis );
+		const p2 = v2.dot( _testAxis );
+		// actual test, basically see if either of the most extreme of the triangle points intersects r
+		if ( Math.max( - Math.max( p0, p1, p2 ), Math.min( p0, p1, p2 ) ) > r ) {
+
+			// points of the projected triangle are outside the projected half-length of the aabb
+			// the axis is separating and we can exit
+			return false;
+
+		}
+
+	}
+
+	return true;
+
+}
+
+const _box$3 = /*@__PURE__*/ new Box3();
+const _v1$6 = /*@__PURE__*/ new Vector3();
+const _v2$3 = /*@__PURE__*/ new Vector3();
+
+class Sphere {
+
+	constructor( center = new Vector3(), radius = - 1 ) {
+
+		this.isSphere = true;
+
+		this.center = center;
+		this.radius = radius;
+
+	}
+
+	set( center, radius ) {
+
+		this.center.copy( center );
+		this.radius = radius;
+
+		return this;
+
+	}
+
+	setFromPoints( points, optionalCenter ) {
+
+		const center = this.center;
+
+		if ( optionalCenter !== undefined ) {
+
+			center.copy( optionalCenter );
+
+		} else {
+
+			_box$3.setFromPoints( points ).getCenter( center );
+
+		}
+
+		let maxRadiusSq = 0;
+
+		for ( let i = 0, il = points.length; i < il; i ++ ) {
+
+			maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( points[ i ] ) );
+
+		}
+
+		this.radius = Math.sqrt( maxRadiusSq );
+
+		return this;
+
+	}
+
+	copy( sphere ) {
+
+		this.center.copy( sphere.center );
+		this.radius = sphere.radius;
+
+		return this;
+
+	}
+
+	isEmpty() {
+
+		return ( this.radius < 0 );
+
+	}
+
+	makeEmpty() {
+
+		this.center.set( 0, 0, 0 );
+		this.radius = - 1;
+
+		return this;
+
+	}
+
+	containsPoint( point ) {
+
+		return ( point.distanceToSquared( this.center ) <= ( this.radius * this.radius ) );
+
+	}
+
+	distanceToPoint( point ) {
+
+		return ( point.distanceTo( this.center ) - this.radius );
+
+	}
+
+	intersectsSphere( sphere ) {
+
+		const radiusSum = this.radius + sphere.radius;
+
+		return sphere.center.distanceToSquared( this.center ) <= ( radiusSum * radiusSum );
+
+	}
+
+	intersectsBox( box ) {
+
+		return box.intersectsSphere( this );
+
+	}
+
+	intersectsPlane( plane ) {
+
+		return Math.abs( plane.distanceToPoint( this.center ) ) <= this.radius;
+
+	}
+
+	clampPoint( point, target ) {
+
+		const deltaLengthSq = this.center.distanceToSquared( point );
+
+		target.copy( point );
+
+		if ( deltaLengthSq > ( this.radius * this.radius ) ) {
+
+			target.sub( this.center ).normalize();
+			target.multiplyScalar( this.radius ).add( this.center );
+
+		}
+
+		return target;
+
+	}
+
+	getBoundingBox( target ) {
+
+		if ( this.isEmpty() ) {
+
+			// Empty sphere produces empty bounding box
+			target.makeEmpty();
+			return target;
+
+		}
+
+		target.set( this.center, this.center );
+		target.expandByScalar( this.radius );
+
+		return target;
+
+	}
+
+	applyMatrix4( matrix ) {
+
+		this.center.applyMatrix4( matrix );
+		this.radius = this.radius * matrix.getMaxScaleOnAxis();
+
+		return this;
+
+	}
+
+	translate( offset ) {
+
+		this.center.add( offset );
+
+		return this;
+
+	}
+
+	expandByPoint( point ) {
+
+		if ( this.isEmpty() ) {
+
+			this.center.copy( point );
+
+			this.radius = 0;
+
+			return this;
+
+		}
+
+		_v1$6.subVectors( point, this.center );
+
+		const lengthSq = _v1$6.lengthSq();
+
+		if ( lengthSq > ( this.radius * this.radius ) ) {
+
+			// calculate the minimal sphere
+
+			const length = Math.sqrt( lengthSq );
+
+			const delta = ( length - this.radius ) * 0.5;
+
+			this.center.addScaledVector( _v1$6, delta / length );
+
+			this.radius += delta;
+
+		}
+
+		return this;
+
+	}
+
+	union( sphere ) {
+
+		if ( sphere.isEmpty() ) {
+
+			return this;
+
+		}
+
+		if ( this.isEmpty() ) {
+
+			this.copy( sphere );
+
+			return this;
+
+		}
+
+		if ( this.center.equals( sphere.center ) === true ) {
+
+			 this.radius = Math.max( this.radius, sphere.radius );
+
+		} else {
+
+			_v2$3.subVectors( sphere.center, this.center ).setLength( sphere.radius );
+
+			this.expandByPoint( _v1$6.copy( sphere.center ).add( _v2$3 ) );
+
+			this.expandByPoint( _v1$6.copy( sphere.center ).sub( _v2$3 ) );
+
+		}
+
+		return this;
+
+	}
+
+	equals( sphere ) {
+
+		return sphere.center.equals( this.center ) && ( sphere.radius === this.radius );
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+}
+
+const _vector$a = /*@__PURE__*/ new Vector3();
+const _segCenter = /*@__PURE__*/ new Vector3();
+const _segDir = /*@__PURE__*/ new Vector3();
+const _diff = /*@__PURE__*/ new Vector3();
+
+const _edge1 = /*@__PURE__*/ new Vector3();
+const _edge2 = /*@__PURE__*/ new Vector3();
+const _normal$1 = /*@__PURE__*/ new Vector3();
+
+class Ray {
+
+	constructor( origin = new Vector3(), direction = new Vector3( 0, 0, - 1 ) ) {
+
+		this.origin = origin;
+		this.direction = direction;
+
+	}
+
+	set( origin, direction ) {
+
+		this.origin.copy( origin );
+		this.direction.copy( direction );
+
+		return this;
+
+	}
+
+	copy( ray ) {
+
+		this.origin.copy( ray.origin );
+		this.direction.copy( ray.direction );
+
+		return this;
+
+	}
+
+	at( t, target ) {
+
+		return target.copy( this.origin ).addScaledVector( this.direction, t );
+
+	}
+
+	lookAt( v ) {
+
+		this.direction.copy( v ).sub( this.origin ).normalize();
+
+		return this;
+
+	}
+
+	recast( t ) {
+
+		this.origin.copy( this.at( t, _vector$a ) );
+
+		return this;
+
+	}
+
+	closestPointToPoint( point, target ) {
+
+		target.subVectors( point, this.origin );
+
+		const directionDistance = target.dot( this.direction );
+
+		if ( directionDistance < 0 ) {
+
+			return target.copy( this.origin );
+
+		}
+
+		return target.copy( this.origin ).addScaledVector( this.direction, directionDistance );
+
+	}
+
+	distanceToPoint( point ) {
+
+		return Math.sqrt( this.distanceSqToPoint( point ) );
+
+	}
+
+	distanceSqToPoint( point ) {
+
+		const directionDistance = _vector$a.subVectors( point, this.origin ).dot( this.direction );
+
+		// point behind the ray
+
+		if ( directionDistance < 0 ) {
+
+			return this.origin.distanceToSquared( point );
+
+		}
+
+		_vector$a.copy( this.origin ).addScaledVector( this.direction, directionDistance );
+
+		return _vector$a.distanceToSquared( point );
+
+	}
+
+	distanceSqToSegment( v0, v1, optionalPointOnRay, optionalPointOnSegment ) {
+
+		// from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteDistRaySegment.h
+		// It returns the min distance between the ray and the segment
+		// defined by v0 and v1
+		// It can also set two optional targets :
+		// - The closest point on the ray
+		// - The closest point on the segment
+
+		_segCenter.copy( v0 ).add( v1 ).multiplyScalar( 0.5 );
+		_segDir.copy( v1 ).sub( v0 ).normalize();
+		_diff.copy( this.origin ).sub( _segCenter );
+
+		const segExtent = v0.distanceTo( v1 ) * 0.5;
+		const a01 = - this.direction.dot( _segDir );
+		const b0 = _diff.dot( this.direction );
+		const b1 = - _diff.dot( _segDir );
+		const c = _diff.lengthSq();
+		const det = Math.abs( 1 - a01 * a01 );
+		let s0, s1, sqrDist, extDet;
+
+		if ( det > 0 ) {
+
+			// The ray and segment are not parallel.
+
+			s0 = a01 * b1 - b0;
+			s1 = a01 * b0 - b1;
+			extDet = segExtent * det;
+
+			if ( s0 >= 0 ) {
+
+				if ( s1 >= - extDet ) {
+
+					if ( s1 <= extDet ) {
+
+						// region 0
+						// Minimum at interior points of ray and segment.
+
+						const invDet = 1 / det;
+						s0 *= invDet;
+						s1 *= invDet;
+						sqrDist = s0 * ( s0 + a01 * s1 + 2 * b0 ) + s1 * ( a01 * s0 + s1 + 2 * b1 ) + c;
+
+					} else {
+
+						// region 1
+
+						s1 = segExtent;
+						s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
+						sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+
+					}
+
+				} else {
+
+					// region 5
+
+					s1 = - segExtent;
+					s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
+					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+
+				}
+
+			} else {
+
+				if ( s1 <= - extDet ) {
+
+					// region 4
+
+					s0 = Math.max( 0, - ( - a01 * segExtent + b0 ) );
+					s1 = ( s0 > 0 ) ? - segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
+					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+
+				} else if ( s1 <= extDet ) {
+
+					// region 3
+
+					s0 = 0;
+					s1 = Math.min( Math.max( - segExtent, - b1 ), segExtent );
+					sqrDist = s1 * ( s1 + 2 * b1 ) + c;
+
+				} else {
+
+					// region 2
+
+					s0 = Math.max( 0, - ( a01 * segExtent + b0 ) );
+					s1 = ( s0 > 0 ) ? segExtent : Math.min( Math.max( - segExtent, - b1 ), segExtent );
+					sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+
+				}
+
+			}
+
+		} else {
+
+			// Ray and segment are parallel.
+
+			s1 = ( a01 > 0 ) ? - segExtent : segExtent;
+			s0 = Math.max( 0, - ( a01 * s1 + b0 ) );
+			sqrDist = - s0 * s0 + s1 * ( s1 + 2 * b1 ) + c;
+
+		}
+
+		if ( optionalPointOnRay ) {
+
+			optionalPointOnRay.copy( this.origin ).addScaledVector( this.direction, s0 );
+
+		}
+
+		if ( optionalPointOnSegment ) {
+
+			optionalPointOnSegment.copy( _segCenter ).addScaledVector( _segDir, s1 );
+
+		}
+
+		return sqrDist;
+
+	}
+
+	intersectSphere( sphere, target ) {
+
+		_vector$a.subVectors( sphere.center, this.origin );
+		const tca = _vector$a.dot( this.direction );
+		const d2 = _vector$a.dot( _vector$a ) - tca * tca;
+		const radius2 = sphere.radius * sphere.radius;
+
+		if ( d2 > radius2 ) return null;
+
+		const thc = Math.sqrt( radius2 - d2 );
+
+		// t0 = first intersect point - entrance on front of sphere
+		const t0 = tca - thc;
+
+		// t1 = second intersect point - exit point on back of sphere
+		const t1 = tca + thc;
+
+		// test to see if t1 is behind the ray - if so, return null
+		if ( t1 < 0 ) return null;
+
+		// test to see if t0 is behind the ray:
+		// if it is, the ray is inside the sphere, so return the second exit point scaled by t1,
+		// in order to always return an intersect point that is in front of the ray.
+		if ( t0 < 0 ) return this.at( t1, target );
+
+		// else t0 is in front of the ray, so return the first collision point scaled by t0
+		return this.at( t0, target );
+
+	}
+
+	intersectsSphere( sphere ) {
+
+		return this.distanceSqToPoint( sphere.center ) <= ( sphere.radius * sphere.radius );
+
+	}
+
+	distanceToPlane( plane ) {
+
+		const denominator = plane.normal.dot( this.direction );
+
+		if ( denominator === 0 ) {
+
+			// line is coplanar, return origin
+			if ( plane.distanceToPoint( this.origin ) === 0 ) {
+
+				return 0;
+
+			}
+
+			// Null is preferable to undefined since undefined means.... it is undefined
+
+			return null;
+
+		}
+
+		const t = - ( this.origin.dot( plane.normal ) + plane.constant ) / denominator;
+
+		// Return if the ray never intersects the plane
+
+		return t >= 0 ? t : null;
+
+	}
+
+	intersectPlane( plane, target ) {
+
+		const t = this.distanceToPlane( plane );
+
+		if ( t === null ) {
+
+			return null;
+
+		}
+
+		return this.at( t, target );
+
+	}
+
+	intersectsPlane( plane ) {
+
+		// check if the ray lies on the plane first
+
+		const distToPoint = plane.distanceToPoint( this.origin );
+
+		if ( distToPoint === 0 ) {
+
+			return true;
+
+		}
+
+		const denominator = plane.normal.dot( this.direction );
+
+		if ( denominator * distToPoint < 0 ) {
+
+			return true;
+
+		}
+
+		// ray origin is behind the plane (and is pointing behind it)
+
+		return false;
+
+	}
+
+	intersectBox( box, target ) {
+
+		let tmin, tmax, tymin, tymax, tzmin, tzmax;
+
+		const invdirx = 1 / this.direction.x,
+			invdiry = 1 / this.direction.y,
+			invdirz = 1 / this.direction.z;
+
+		const origin = this.origin;
+
+		if ( invdirx >= 0 ) {
+
+			tmin = ( box.min.x - origin.x ) * invdirx;
+			tmax = ( box.max.x - origin.x ) * invdirx;
+
+		} else {
+
+			tmin = ( box.max.x - origin.x ) * invdirx;
+			tmax = ( box.min.x - origin.x ) * invdirx;
+
+		}
+
+		if ( invdiry >= 0 ) {
+
+			tymin = ( box.min.y - origin.y ) * invdiry;
+			tymax = ( box.max.y - origin.y ) * invdiry;
+
+		} else {
+
+			tymin = ( box.max.y - origin.y ) * invdiry;
+			tymax = ( box.min.y - origin.y ) * invdiry;
+
+		}
+
+		if ( ( tmin > tymax ) || ( tymin > tmax ) ) return null;
+
+		if ( tymin > tmin || isNaN( tmin ) ) tmin = tymin;
+
+		if ( tymax < tmax || isNaN( tmax ) ) tmax = tymax;
+
+		if ( invdirz >= 0 ) {
+
+			tzmin = ( box.min.z - origin.z ) * invdirz;
+			tzmax = ( box.max.z - origin.z ) * invdirz;
+
+		} else {
+
+			tzmin = ( box.max.z - origin.z ) * invdirz;
+			tzmax = ( box.min.z - origin.z ) * invdirz;
+
+		}
+
+		if ( ( tmin > tzmax ) || ( tzmin > tmax ) ) return null;
+
+		if ( tzmin > tmin || tmin !== tmin ) tmin = tzmin;
+
+		if ( tzmax < tmax || tmax !== tmax ) tmax = tzmax;
+
+		//return point closest to the ray (positive side)
+
+		if ( tmax < 0 ) return null;
+
+		return this.at( tmin >= 0 ? tmin : tmax, target );
+
+	}
+
+	intersectsBox( box ) {
+
+		return this.intersectBox( box, _vector$a ) !== null;
+
+	}
+
+	intersectTriangle( a, b, c, backfaceCulling, target ) {
+
+		// Compute the offset origin, edges, and normal.
+
+		// from https://github.com/pmjoniak/GeometricTools/blob/master/GTEngine/Include/Mathematics/GteIntrRay3Triangle3.h
+
+		_edge1.subVectors( b, a );
+		_edge2.subVectors( c, a );
+		_normal$1.crossVectors( _edge1, _edge2 );
+
+		// Solve Q + t*D = b1*E1 + b2*E2 (Q = kDiff, D = ray direction,
+		// E1 = kEdge1, E2 = kEdge2, N = Cross(E1,E2)) by
+		//   |Dot(D,N)|*b1 = sign(Dot(D,N))*Dot(D,Cross(Q,E2))
+		//   |Dot(D,N)|*b2 = sign(Dot(D,N))*Dot(D,Cross(E1,Q))
+		//   |Dot(D,N)|*t = -sign(Dot(D,N))*Dot(Q,N)
+		let DdN = this.direction.dot( _normal$1 );
+		let sign;
+
+		if ( DdN > 0 ) {
+
+			if ( backfaceCulling ) return null;
+			sign = 1;
+
+		} else if ( DdN < 0 ) {
+
+			sign = - 1;
+			DdN = - DdN;
+
+		} else {
+
+			return null;
+
+		}
+
+		_diff.subVectors( this.origin, a );
+		const DdQxE2 = sign * this.direction.dot( _edge2.crossVectors( _diff, _edge2 ) );
+
+		// b1 < 0, no intersection
+		if ( DdQxE2 < 0 ) {
+
+			return null;
+
+		}
+
+		const DdE1xQ = sign * this.direction.dot( _edge1.cross( _diff ) );
+
+		// b2 < 0, no intersection
+		if ( DdE1xQ < 0 ) {
+
+			return null;
+
+		}
+
+		// b1+b2 > 1, no intersection
+		if ( DdQxE2 + DdE1xQ > DdN ) {
+
+			return null;
+
+		}
+
+		// Line intersects triangle, check if ray does.
+		const QdN = - sign * _diff.dot( _normal$1 );
+
+		// t < 0, no intersection
+		if ( QdN < 0 ) {
+
+			return null;
+
+		}
+
+		// Ray intersects triangle.
+		return this.at( QdN / DdN, target );
+
+	}
+
+	applyMatrix4( matrix4 ) {
+
+		this.origin.applyMatrix4( matrix4 );
+		this.direction.transformDirection( matrix4 );
+
+		return this;
+
+	}
+
+	equals( ray ) {
+
+		return ray.origin.equals( this.origin ) && ray.direction.equals( this.direction );
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+}
+
+class Matrix4 {
+
+	constructor( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {
+
+		Matrix4.prototype.isMatrix4 = true;
+
+		this.elements = [
+
+			1, 0, 0, 0,
+			0, 1, 0, 0,
+			0, 0, 1, 0,
+			0, 0, 0, 1
+
+		];
+
+		if ( n11 !== undefined ) {
+
+			this.set( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 );
+
+		}
+
+	}
+
+	set( n11, n12, n13, n14, n21, n22, n23, n24, n31, n32, n33, n34, n41, n42, n43, n44 ) {
+
+		const te = this.elements;
+
+		te[ 0 ] = n11; te[ 4 ] = n12; te[ 8 ] = n13; te[ 12 ] = n14;
+		te[ 1 ] = n21; te[ 5 ] = n22; te[ 9 ] = n23; te[ 13 ] = n24;
+		te[ 2 ] = n31; te[ 6 ] = n32; te[ 10 ] = n33; te[ 14 ] = n34;
+		te[ 3 ] = n41; te[ 7 ] = n42; te[ 11 ] = n43; te[ 15 ] = n44;
+
+		return this;
+
+	}
+
+	identity() {
+
+		this.set(
+
+			1, 0, 0, 0,
+			0, 1, 0, 0,
+			0, 0, 1, 0,
+			0, 0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new Matrix4().fromArray( this.elements );
+
+	}
+
+	copy( m ) {
+
+		const te = this.elements;
+		const me = m.elements;
+
+		te[ 0 ] = me[ 0 ]; te[ 1 ] = me[ 1 ]; te[ 2 ] = me[ 2 ]; te[ 3 ] = me[ 3 ];
+		te[ 4 ] = me[ 4 ]; te[ 5 ] = me[ 5 ]; te[ 6 ] = me[ 6 ]; te[ 7 ] = me[ 7 ];
+		te[ 8 ] = me[ 8 ]; te[ 9 ] = me[ 9 ]; te[ 10 ] = me[ 10 ]; te[ 11 ] = me[ 11 ];
+		te[ 12 ] = me[ 12 ]; te[ 13 ] = me[ 13 ]; te[ 14 ] = me[ 14 ]; te[ 15 ] = me[ 15 ];
+
+		return this;
+
+	}
+
+	copyPosition( m ) {
+
+		const te = this.elements, me = m.elements;
+
+		te[ 12 ] = me[ 12 ];
+		te[ 13 ] = me[ 13 ];
+		te[ 14 ] = me[ 14 ];
+
+		return this;
+
+	}
+
+	setFromMatrix3( m ) {
+
+		const me = m.elements;
+
+		this.set(
+
+			me[ 0 ], me[ 3 ], me[ 6 ], 0,
+			me[ 1 ], me[ 4 ], me[ 7 ], 0,
+			me[ 2 ], me[ 5 ], me[ 8 ], 0,
+			0, 0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	extractBasis( xAxis, yAxis, zAxis ) {
+
+		xAxis.setFromMatrixColumn( this, 0 );
+		yAxis.setFromMatrixColumn( this, 1 );
+		zAxis.setFromMatrixColumn( this, 2 );
+
+		return this;
+
+	}
+
+	makeBasis( xAxis, yAxis, zAxis ) {
+
+		this.set(
+			xAxis.x, yAxis.x, zAxis.x, 0,
+			xAxis.y, yAxis.y, zAxis.y, 0,
+			xAxis.z, yAxis.z, zAxis.z, 0,
+			0, 0, 0, 1
+		);
+
+		return this;
+
+	}
+
+	extractRotation( m ) {
+
+		// this method does not support reflection matrices
+
+		const te = this.elements;
+		const me = m.elements;
+
+		const scaleX = 1 / _v1$5.setFromMatrixColumn( m, 0 ).length();
+		const scaleY = 1 / _v1$5.setFromMatrixColumn( m, 1 ).length();
+		const scaleZ = 1 / _v1$5.setFromMatrixColumn( m, 2 ).length();
+
+		te[ 0 ] = me[ 0 ] * scaleX;
+		te[ 1 ] = me[ 1 ] * scaleX;
+		te[ 2 ] = me[ 2 ] * scaleX;
+		te[ 3 ] = 0;
+
+		te[ 4 ] = me[ 4 ] * scaleY;
+		te[ 5 ] = me[ 5 ] * scaleY;
+		te[ 6 ] = me[ 6 ] * scaleY;
+		te[ 7 ] = 0;
+
+		te[ 8 ] = me[ 8 ] * scaleZ;
+		te[ 9 ] = me[ 9 ] * scaleZ;
+		te[ 10 ] = me[ 10 ] * scaleZ;
+		te[ 11 ] = 0;
+
+		te[ 12 ] = 0;
+		te[ 13 ] = 0;
+		te[ 14 ] = 0;
+		te[ 15 ] = 1;
+
+		return this;
+
+	}
+
+	makeRotationFromEuler( euler ) {
+
+		const te = this.elements;
+
+		const x = euler.x, y = euler.y, z = euler.z;
+		const a = Math.cos( x ), b = Math.sin( x );
+		const c = Math.cos( y ), d = Math.sin( y );
+		const e = Math.cos( z ), f = Math.sin( z );
+
+		if ( euler.order === 'XYZ' ) {
+
+			const ae = a * e, af = a * f, be = b * e, bf = b * f;
+
+			te[ 0 ] = c * e;
+			te[ 4 ] = - c * f;
+			te[ 8 ] = d;
+
+			te[ 1 ] = af + be * d;
+			te[ 5 ] = ae - bf * d;
+			te[ 9 ] = - b * c;
+
+			te[ 2 ] = bf - ae * d;
+			te[ 6 ] = be + af * d;
+			te[ 10 ] = a * c;
+
+		} else if ( euler.order === 'YXZ' ) {
+
+			const ce = c * e, cf = c * f, de = d * e, df = d * f;
+
+			te[ 0 ] = ce + df * b;
+			te[ 4 ] = de * b - cf;
+			te[ 8 ] = a * d;
+
+			te[ 1 ] = a * f;
+			te[ 5 ] = a * e;
+			te[ 9 ] = - b;
+
+			te[ 2 ] = cf * b - de;
+			te[ 6 ] = df + ce * b;
+			te[ 10 ] = a * c;
+
+		} else if ( euler.order === 'ZXY' ) {
+
+			const ce = c * e, cf = c * f, de = d * e, df = d * f;
+
+			te[ 0 ] = ce - df * b;
+			te[ 4 ] = - a * f;
+			te[ 8 ] = de + cf * b;
+
+			te[ 1 ] = cf + de * b;
+			te[ 5 ] = a * e;
+			te[ 9 ] = df - ce * b;
+
+			te[ 2 ] = - a * d;
+			te[ 6 ] = b;
+			te[ 10 ] = a * c;
+
+		} else if ( euler.order === 'ZYX' ) {
+
+			const ae = a * e, af = a * f, be = b * e, bf = b * f;
+
+			te[ 0 ] = c * e;
+			te[ 4 ] = be * d - af;
+			te[ 8 ] = ae * d + bf;
+
+			te[ 1 ] = c * f;
+			te[ 5 ] = bf * d + ae;
+			te[ 9 ] = af * d - be;
+
+			te[ 2 ] = - d;
+			te[ 6 ] = b * c;
+			te[ 10 ] = a * c;
+
+		} else if ( euler.order === 'YZX' ) {
+
+			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;
+
+			te[ 0 ] = c * e;
+			te[ 4 ] = bd - ac * f;
+			te[ 8 ] = bc * f + ad;
+
+			te[ 1 ] = f;
+			te[ 5 ] = a * e;
+			te[ 9 ] = - b * e;
+
+			te[ 2 ] = - d * e;
+			te[ 6 ] = ad * f + bc;
+			te[ 10 ] = ac - bd * f;
+
+		} else if ( euler.order === 'XZY' ) {
+
+			const ac = a * c, ad = a * d, bc = b * c, bd = b * d;
+
+			te[ 0 ] = c * e;
+			te[ 4 ] = - f;
+			te[ 8 ] = d * e;
+
+			te[ 1 ] = ac * f + bd;
+			te[ 5 ] = a * e;
+			te[ 9 ] = ad * f - bc;
+
+			te[ 2 ] = bc * f - ad;
+			te[ 6 ] = b * e;
+			te[ 10 ] = bd * f + ac;
+
+		}
+
+		// bottom row
+		te[ 3 ] = 0;
+		te[ 7 ] = 0;
+		te[ 11 ] = 0;
+
+		// last column
+		te[ 12 ] = 0;
+		te[ 13 ] = 0;
+		te[ 14 ] = 0;
+		te[ 15 ] = 1;
+
+		return this;
+
+	}
+
+	makeRotationFromQuaternion( q ) {
+
+		return this.compose( _zero, q, _one );
+
+	}
+
+	lookAt( eye, target, up ) {
+
+		const te = this.elements;
+
+		_z.subVectors( eye, target );
+
+		if ( _z.lengthSq() === 0 ) {
+
+			// eye and target are in the same position
+
+			_z.z = 1;
+
+		}
+
+		_z.normalize();
+		_x.crossVectors( up, _z );
+
+		if ( _x.lengthSq() === 0 ) {
+
+			// up and z are parallel
+
+			if ( Math.abs( up.z ) === 1 ) {
+
+				_z.x += 0.0001;
+
+			} else {
+
+				_z.z += 0.0001;
+
+			}
+
+			_z.normalize();
+			_x.crossVectors( up, _z );
+
+		}
+
+		_x.normalize();
+		_y.crossVectors( _z, _x );
+
+		te[ 0 ] = _x.x; te[ 4 ] = _y.x; te[ 8 ] = _z.x;
+		te[ 1 ] = _x.y; te[ 5 ] = _y.y; te[ 9 ] = _z.y;
+		te[ 2 ] = _x.z; te[ 6 ] = _y.z; te[ 10 ] = _z.z;
+
+		return this;
+
+	}
+
+	multiply( m ) {
+
+		return this.multiplyMatrices( this, m );
+
+	}
+
+	premultiply( m ) {
+
+		return this.multiplyMatrices( m, this );
+
+	}
+
+	multiplyMatrices( a, b ) {
+
+		const ae = a.elements;
+		const be = b.elements;
+		const te = this.elements;
+
+		const a11 = ae[ 0 ], a12 = ae[ 4 ], a13 = ae[ 8 ], a14 = ae[ 12 ];
+		const a21 = ae[ 1 ], a22 = ae[ 5 ], a23 = ae[ 9 ], a24 = ae[ 13 ];
+		const a31 = ae[ 2 ], a32 = ae[ 6 ], a33 = ae[ 10 ], a34 = ae[ 14 ];
+		const a41 = ae[ 3 ], a42 = ae[ 7 ], a43 = ae[ 11 ], a44 = ae[ 15 ];
+
+		const b11 = be[ 0 ], b12 = be[ 4 ], b13 = be[ 8 ], b14 = be[ 12 ];
+		const b21 = be[ 1 ], b22 = be[ 5 ], b23 = be[ 9 ], b24 = be[ 13 ];
+		const b31 = be[ 2 ], b32 = be[ 6 ], b33 = be[ 10 ], b34 = be[ 14 ];
+		const b41 = be[ 3 ], b42 = be[ 7 ], b43 = be[ 11 ], b44 = be[ 15 ];
+
+		te[ 0 ] = a11 * b11 + a12 * b21 + a13 * b31 + a14 * b41;
+		te[ 4 ] = a11 * b12 + a12 * b22 + a13 * b32 + a14 * b42;
+		te[ 8 ] = a11 * b13 + a12 * b23 + a13 * b33 + a14 * b43;
+		te[ 12 ] = a11 * b14 + a12 * b24 + a13 * b34 + a14 * b44;
+
+		te[ 1 ] = a21 * b11 + a22 * b21 + a23 * b31 + a24 * b41;
+		te[ 5 ] = a21 * b12 + a22 * b22 + a23 * b32 + a24 * b42;
+		te[ 9 ] = a21 * b13 + a22 * b23 + a23 * b33 + a24 * b43;
+		te[ 13 ] = a21 * b14 + a22 * b24 + a23 * b34 + a24 * b44;
+
+		te[ 2 ] = a31 * b11 + a32 * b21 + a33 * b31 + a34 * b41;
+		te[ 6 ] = a31 * b12 + a32 * b22 + a33 * b32 + a34 * b42;
+		te[ 10 ] = a31 * b13 + a32 * b23 + a33 * b33 + a34 * b43;
+		te[ 14 ] = a31 * b14 + a32 * b24 + a33 * b34 + a34 * b44;
+
+		te[ 3 ] = a41 * b11 + a42 * b21 + a43 * b31 + a44 * b41;
+		te[ 7 ] = a41 * b12 + a42 * b22 + a43 * b32 + a44 * b42;
+		te[ 11 ] = a41 * b13 + a42 * b23 + a43 * b33 + a44 * b43;
+		te[ 15 ] = a41 * b14 + a42 * b24 + a43 * b34 + a44 * b44;
+
+		return this;
+
+	}
+
+	multiplyScalar( s ) {
+
+		const te = this.elements;
+
+		te[ 0 ] *= s; te[ 4 ] *= s; te[ 8 ] *= s; te[ 12 ] *= s;
+		te[ 1 ] *= s; te[ 5 ] *= s; te[ 9 ] *= s; te[ 13 ] *= s;
+		te[ 2 ] *= s; te[ 6 ] *= s; te[ 10 ] *= s; te[ 14 ] *= s;
+		te[ 3 ] *= s; te[ 7 ] *= s; te[ 11 ] *= s; te[ 15 ] *= s;
+
+		return this;
+
+	}
+
+	determinant() {
+
+		const te = this.elements;
+
+		const n11 = te[ 0 ], n12 = te[ 4 ], n13 = te[ 8 ], n14 = te[ 12 ];
+		const n21 = te[ 1 ], n22 = te[ 5 ], n23 = te[ 9 ], n24 = te[ 13 ];
+		const n31 = te[ 2 ], n32 = te[ 6 ], n33 = te[ 10 ], n34 = te[ 14 ];
+		const n41 = te[ 3 ], n42 = te[ 7 ], n43 = te[ 11 ], n44 = te[ 15 ];
+
+		//TODO: make this more efficient
+		//( based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm )
+
+		return (
+			n41 * (
+				+ n14 * n23 * n32
+				 - n13 * n24 * n32
+				 - n14 * n22 * n33
+				 + n12 * n24 * n33
+				 + n13 * n22 * n34
+				 - n12 * n23 * n34
+			) +
+			n42 * (
+				+ n11 * n23 * n34
+				 - n11 * n24 * n33
+				 + n14 * n21 * n33
+				 - n13 * n21 * n34
+				 + n13 * n24 * n31
+				 - n14 * n23 * n31
+			) +
+			n43 * (
+				+ n11 * n24 * n32
+				 - n11 * n22 * n34
+				 - n14 * n21 * n32
+				 + n12 * n21 * n34
+				 + n14 * n22 * n31
+				 - n12 * n24 * n31
+			) +
+			n44 * (
+				- n13 * n22 * n31
+				 - n11 * n23 * n32
+				 + n11 * n22 * n33
+				 + n13 * n21 * n32
+				 - n12 * n21 * n33
+				 + n12 * n23 * n31
+			)
+
+		);
+
+	}
+
+	transpose() {
+
+		const te = this.elements;
+		let tmp;
+
+		tmp = te[ 1 ]; te[ 1 ] = te[ 4 ]; te[ 4 ] = tmp;
+		tmp = te[ 2 ]; te[ 2 ] = te[ 8 ]; te[ 8 ] = tmp;
+		tmp = te[ 6 ]; te[ 6 ] = te[ 9 ]; te[ 9 ] = tmp;
+
+		tmp = te[ 3 ]; te[ 3 ] = te[ 12 ]; te[ 12 ] = tmp;
+		tmp = te[ 7 ]; te[ 7 ] = te[ 13 ]; te[ 13 ] = tmp;
+		tmp = te[ 11 ]; te[ 11 ] = te[ 14 ]; te[ 14 ] = tmp;
+
+		return this;
+
+	}
+
+	setPosition( x, y, z ) {
+
+		const te = this.elements;
+
+		if ( x.isVector3 ) {
+
+			te[ 12 ] = x.x;
+			te[ 13 ] = x.y;
+			te[ 14 ] = x.z;
+
+		} else {
+
+			te[ 12 ] = x;
+			te[ 13 ] = y;
+			te[ 14 ] = z;
+
+		}
+
+		return this;
+
+	}
+
+	invert() {
+
+		// based on http://www.euclideanspace.com/maths/algebra/matrix/functions/inverse/fourD/index.htm
+		const te = this.elements,
+
+			n11 = te[ 0 ], n21 = te[ 1 ], n31 = te[ 2 ], n41 = te[ 3 ],
+			n12 = te[ 4 ], n22 = te[ 5 ], n32 = te[ 6 ], n42 = te[ 7 ],
+			n13 = te[ 8 ], n23 = te[ 9 ], n33 = te[ 10 ], n43 = te[ 11 ],
+			n14 = te[ 12 ], n24 = te[ 13 ], n34 = te[ 14 ], n44 = te[ 15 ],
+
+			t11 = n23 * n34 * n42 - n24 * n33 * n42 + n24 * n32 * n43 - n22 * n34 * n43 - n23 * n32 * n44 + n22 * n33 * n44,
+			t12 = n14 * n33 * n42 - n13 * n34 * n42 - n14 * n32 * n43 + n12 * n34 * n43 + n13 * n32 * n44 - n12 * n33 * n44,
+			t13 = n13 * n24 * n42 - n14 * n23 * n42 + n14 * n22 * n43 - n12 * n24 * n43 - n13 * n22 * n44 + n12 * n23 * n44,
+			t14 = n14 * n23 * n32 - n13 * n24 * n32 - n14 * n22 * n33 + n12 * n24 * n33 + n13 * n22 * n34 - n12 * n23 * n34;
+
+		const det = n11 * t11 + n21 * t12 + n31 * t13 + n41 * t14;
+
+		if ( det === 0 ) return this.set( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 );
+
+		const detInv = 1 / det;
+
+		te[ 0 ] = t11 * detInv;
+		te[ 1 ] = ( n24 * n33 * n41 - n23 * n34 * n41 - n24 * n31 * n43 + n21 * n34 * n43 + n23 * n31 * n44 - n21 * n33 * n44 ) * detInv;
+		te[ 2 ] = ( n22 * n34 * n41 - n24 * n32 * n41 + n24 * n31 * n42 - n21 * n34 * n42 - n22 * n31 * n44 + n21 * n32 * n44 ) * detInv;
+		te[ 3 ] = ( n23 * n32 * n41 - n22 * n33 * n41 - n23 * n31 * n42 + n21 * n33 * n42 + n22 * n31 * n43 - n21 * n32 * n43 ) * detInv;
+
+		te[ 4 ] = t12 * detInv;
+		te[ 5 ] = ( n13 * n34 * n41 - n14 * n33 * n41 + n14 * n31 * n43 - n11 * n34 * n43 - n13 * n31 * n44 + n11 * n33 * n44 ) * detInv;
+		te[ 6 ] = ( n14 * n32 * n41 - n12 * n34 * n41 - n14 * n31 * n42 + n11 * n34 * n42 + n12 * n31 * n44 - n11 * n32 * n44 ) * detInv;
+		te[ 7 ] = ( n12 * n33 * n41 - n13 * n32 * n41 + n13 * n31 * n42 - n11 * n33 * n42 - n12 * n31 * n43 + n11 * n32 * n43 ) * detInv;
+
+		te[ 8 ] = t13 * detInv;
+		te[ 9 ] = ( n14 * n23 * n41 - n13 * n24 * n41 - n14 * n21 * n43 + n11 * n24 * n43 + n13 * n21 * n44 - n11 * n23 * n44 ) * detInv;
+		te[ 10 ] = ( n12 * n24 * n41 - n14 * n22 * n41 + n14 * n21 * n42 - n11 * n24 * n42 - n12 * n21 * n44 + n11 * n22 * n44 ) * detInv;
+		te[ 11 ] = ( n13 * n22 * n41 - n12 * n23 * n41 - n13 * n21 * n42 + n11 * n23 * n42 + n12 * n21 * n43 - n11 * n22 * n43 ) * detInv;
+
+		te[ 12 ] = t14 * detInv;
+		te[ 13 ] = ( n13 * n24 * n31 - n14 * n23 * n31 + n14 * n21 * n33 - n11 * n24 * n33 - n13 * n21 * n34 + n11 * n23 * n34 ) * detInv;
+		te[ 14 ] = ( n14 * n22 * n31 - n12 * n24 * n31 - n14 * n21 * n32 + n11 * n24 * n32 + n12 * n21 * n34 - n11 * n22 * n34 ) * detInv;
+		te[ 15 ] = ( n12 * n23 * n31 - n13 * n22 * n31 + n13 * n21 * n32 - n11 * n23 * n32 - n12 * n21 * n33 + n11 * n22 * n33 ) * detInv;
+
+		return this;
+
+	}
+
+	scale( v ) {
+
+		const te = this.elements;
+		const x = v.x, y = v.y, z = v.z;
+
+		te[ 0 ] *= x; te[ 4 ] *= y; te[ 8 ] *= z;
+		te[ 1 ] *= x; te[ 5 ] *= y; te[ 9 ] *= z;
+		te[ 2 ] *= x; te[ 6 ] *= y; te[ 10 ] *= z;
+		te[ 3 ] *= x; te[ 7 ] *= y; te[ 11 ] *= z;
+
+		return this;
+
+	}
+
+	getMaxScaleOnAxis() {
+
+		const te = this.elements;
+
+		const scaleXSq = te[ 0 ] * te[ 0 ] + te[ 1 ] * te[ 1 ] + te[ 2 ] * te[ 2 ];
+		const scaleYSq = te[ 4 ] * te[ 4 ] + te[ 5 ] * te[ 5 ] + te[ 6 ] * te[ 6 ];
+		const scaleZSq = te[ 8 ] * te[ 8 ] + te[ 9 ] * te[ 9 ] + te[ 10 ] * te[ 10 ];
+
+		return Math.sqrt( Math.max( scaleXSq, scaleYSq, scaleZSq ) );
+
+	}
+
+	makeTranslation( x, y, z ) {
+
+		if ( x.isVector3 ) {
+
+			this.set(
+
+				1, 0, 0, x.x,
+				0, 1, 0, x.y,
+				0, 0, 1, x.z,
+				0, 0, 0, 1
+
+			);
+
+		} else {
+
+			this.set(
+
+				1, 0, 0, x,
+				0, 1, 0, y,
+				0, 0, 1, z,
+				0, 0, 0, 1
+
+			);
+
+		}
+
+		return this;
+
+	}
+
+	makeRotationX( theta ) {
+
+		const c = Math.cos( theta ), s = Math.sin( theta );
+
+		this.set(
+
+			1, 0, 0, 0,
+			0, c, - s, 0,
+			0, s, c, 0,
+			0, 0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	makeRotationY( theta ) {
+
+		const c = Math.cos( theta ), s = Math.sin( theta );
+
+		this.set(
+
+			 c, 0, s, 0,
+			 0, 1, 0, 0,
+			- s, 0, c, 0,
+			 0, 0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	makeRotationZ( theta ) {
+
+		const c = Math.cos( theta ), s = Math.sin( theta );
+
+		this.set(
+
+			c, - s, 0, 0,
+			s, c, 0, 0,
+			0, 0, 1, 0,
+			0, 0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	makeRotationAxis( axis, angle ) {
+
+		// Based on http://www.gamedev.net/reference/articles/article1199.asp
+
+		const c = Math.cos( angle );
+		const s = Math.sin( angle );
+		const t = 1 - c;
+		const x = axis.x, y = axis.y, z = axis.z;
+		const tx = t * x, ty = t * y;
+
+		this.set(
+
+			tx * x + c, tx * y - s * z, tx * z + s * y, 0,
+			tx * y + s * z, ty * y + c, ty * z - s * x, 0,
+			tx * z - s * y, ty * z + s * x, t * z * z + c, 0,
+			0, 0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	makeScale( x, y, z ) {
+
+		this.set(
+
+			x, 0, 0, 0,
+			0, y, 0, 0,
+			0, 0, z, 0,
+			0, 0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	makeShear( xy, xz, yx, yz, zx, zy ) {
+
+		this.set(
+
+			1, yx, zx, 0,
+			xy, 1, zy, 0,
+			xz, yz, 1, 0,
+			0, 0, 0, 1
+
+		);
+
+		return this;
+
+	}
+
+	compose( position, quaternion, scale ) {
+
+		const te = this.elements;
+
+		const x = quaternion._x, y = quaternion._y, z = quaternion._z, w = quaternion._w;
+		const x2 = x + x,	y2 = y + y, z2 = z + z;
+		const xx = x * x2, xy = x * y2, xz = x * z2;
+		const yy = y * y2, yz = y * z2, zz = z * z2;
+		const wx = w * x2, wy = w * y2, wz = w * z2;
+
+		const sx = scale.x, sy = scale.y, sz = scale.z;
+
+		te[ 0 ] = ( 1 - ( yy + zz ) ) * sx;
+		te[ 1 ] = ( xy + wz ) * sx;
+		te[ 2 ] = ( xz - wy ) * sx;
+		te[ 3 ] = 0;
+
+		te[ 4 ] = ( xy - wz ) * sy;
+		te[ 5 ] = ( 1 - ( xx + zz ) ) * sy;
+		te[ 6 ] = ( yz + wx ) * sy;
+		te[ 7 ] = 0;
+
+		te[ 8 ] = ( xz + wy ) * sz;
+		te[ 9 ] = ( yz - wx ) * sz;
+		te[ 10 ] = ( 1 - ( xx + yy ) ) * sz;
+		te[ 11 ] = 0;
+
+		te[ 12 ] = position.x;
+		te[ 13 ] = position.y;
+		te[ 14 ] = position.z;
+		te[ 15 ] = 1;
+
+		return this;
+
+	}
+
+	decompose( position, quaternion, scale ) {
+
+		const te = this.elements;
+
+		let sx = _v1$5.set( te[ 0 ], te[ 1 ], te[ 2 ] ).length();
+		const sy = _v1$5.set( te[ 4 ], te[ 5 ], te[ 6 ] ).length();
+		const sz = _v1$5.set( te[ 8 ], te[ 9 ], te[ 10 ] ).length();
+
+		// if determine is negative, we need to invert one scale
+		const det = this.determinant();
+		if ( det < 0 ) sx = - sx;
+
+		position.x = te[ 12 ];
+		position.y = te[ 13 ];
+		position.z = te[ 14 ];
+
+		// scale the rotation part
+		_m1$4.copy( this );
+
+		const invSX = 1 / sx;
+		const invSY = 1 / sy;
+		const invSZ = 1 / sz;
+
+		_m1$4.elements[ 0 ] *= invSX;
+		_m1$4.elements[ 1 ] *= invSX;
+		_m1$4.elements[ 2 ] *= invSX;
+
+		_m1$4.elements[ 4 ] *= invSY;
+		_m1$4.elements[ 5 ] *= invSY;
+		_m1$4.elements[ 6 ] *= invSY;
+
+		_m1$4.elements[ 8 ] *= invSZ;
+		_m1$4.elements[ 9 ] *= invSZ;
+		_m1$4.elements[ 10 ] *= invSZ;
+
+		quaternion.setFromRotationMatrix( _m1$4 );
+
+		scale.x = sx;
+		scale.y = sy;
+		scale.z = sz;
+
+		return this;
+
+	}
+
+	makePerspective( left, right, top, bottom, near, far, coordinateSystem = WebGLCoordinateSystem ) {
+
+		const te = this.elements;
+		const x = 2 * near / ( right - left );
+		const y = 2 * near / ( top - bottom );
+
+		const a = ( right + left ) / ( right - left );
+		const b = ( top + bottom ) / ( top - bottom );
+
+		let c, d;
+
+		if ( coordinateSystem === WebGLCoordinateSystem ) {
+
+			c = - ( far + near ) / ( far - near );
+			d = ( - 2 * far * near ) / ( far - near );
+
+		} else if ( coordinateSystem === WebGPUCoordinateSystem ) {
+
+			c = - far / ( far - near );
+			d = ( - far * near ) / ( far - near );
+
+		} else {
+
+			throw new Error( 'THREE.Matrix4.makePerspective(): Invalid coordinate system: ' + coordinateSystem );
+
+		}
+
+		te[ 0 ] = x;	te[ 4 ] = 0;	te[ 8 ] = a; 	te[ 12 ] = 0;
+		te[ 1 ] = 0;	te[ 5 ] = y;	te[ 9 ] = b; 	te[ 13 ] = 0;
+		te[ 2 ] = 0;	te[ 6 ] = 0;	te[ 10 ] = c; 	te[ 14 ] = d;
+		te[ 3 ] = 0;	te[ 7 ] = 0;	te[ 11 ] = - 1;	te[ 15 ] = 0;
+
+		return this;
+
+	}
+
+	makeOrthographic( left, right, top, bottom, near, far, coordinateSystem = WebGLCoordinateSystem ) {
+
+		const te = this.elements;
+		const w = 1.0 / ( right - left );
+		const h = 1.0 / ( top - bottom );
+		const p = 1.0 / ( far - near );
+
+		const x = ( right + left ) * w;
+		const y = ( top + bottom ) * h;
+
+		let z, zInv;
+
+		if ( coordinateSystem === WebGLCoordinateSystem ) {
+
+			z = ( far + near ) * p;
+			zInv = - 2 * p;
+
+		} else if ( coordinateSystem === WebGPUCoordinateSystem ) {
+
+			z = near * p;
+			zInv = - 1 * p;
+
+		} else {
+
+			throw new Error( 'THREE.Matrix4.makeOrthographic(): Invalid coordinate system: ' + coordinateSystem );
+
+		}
+
+		te[ 0 ] = 2 * w;	te[ 4 ] = 0;		te[ 8 ] = 0; 		te[ 12 ] = - x;
+		te[ 1 ] = 0; 		te[ 5 ] = 2 * h;	te[ 9 ] = 0; 		te[ 13 ] = - y;
+		te[ 2 ] = 0; 		te[ 6 ] = 0;		te[ 10 ] = zInv;	te[ 14 ] = - z;
+		te[ 3 ] = 0; 		te[ 7 ] = 0;		te[ 11 ] = 0;		te[ 15 ] = 1;
+
+		return this;
+
+	}
+
+	equals( matrix ) {
+
+		const te = this.elements;
+		const me = matrix.elements;
+
+		for ( let i = 0; i < 16; i ++ ) {
+
+			if ( te[ i ] !== me[ i ] ) return false;
+
+		}
+
+		return true;
+
+	}
+
+	fromArray( array, offset = 0 ) {
+
+		for ( let i = 0; i < 16; i ++ ) {
+
+			this.elements[ i ] = array[ i + offset ];
+
+		}
+
+		return this;
+
+	}
+
+	toArray( array = [], offset = 0 ) {
+
+		const te = this.elements;
+
+		array[ offset ] = te[ 0 ];
+		array[ offset + 1 ] = te[ 1 ];
+		array[ offset + 2 ] = te[ 2 ];
+		array[ offset + 3 ] = te[ 3 ];
+
+		array[ offset + 4 ] = te[ 4 ];
+		array[ offset + 5 ] = te[ 5 ];
+		array[ offset + 6 ] = te[ 6 ];
+		array[ offset + 7 ] = te[ 7 ];
+
+		array[ offset + 8 ] = te[ 8 ];
+		array[ offset + 9 ] = te[ 9 ];
+		array[ offset + 10 ] = te[ 10 ];
+		array[ offset + 11 ] = te[ 11 ];
+
+		array[ offset + 12 ] = te[ 12 ];
+		array[ offset + 13 ] = te[ 13 ];
+		array[ offset + 14 ] = te[ 14 ];
+		array[ offset + 15 ] = te[ 15 ];
+
+		return array;
+
+	}
+
+}
+
+const _v1$5 = /*@__PURE__*/ new Vector3();
+const _m1$4 = /*@__PURE__*/ new Matrix4();
+const _zero = /*@__PURE__*/ new Vector3( 0, 0, 0 );
+const _one = /*@__PURE__*/ new Vector3( 1, 1, 1 );
+const _x = /*@__PURE__*/ new Vector3();
+const _y = /*@__PURE__*/ new Vector3();
+const _z = /*@__PURE__*/ new Vector3();
+
+const _matrix$2 = /*@__PURE__*/ new Matrix4();
+const _quaternion$3 = /*@__PURE__*/ new Quaternion();
+
+class Euler {
+
+	constructor( x = 0, y = 0, z = 0, order = Euler.DEFAULT_ORDER ) {
+
+		this.isEuler = true;
+
+		this._x = x;
+		this._y = y;
+		this._z = z;
+		this._order = order;
+
+	}
+
+	get x() {
+
+		return this._x;
+
+	}
+
+	set x( value ) {
+
+		this._x = value;
+		this._onChangeCallback();
+
+	}
+
+	get y() {
+
+		return this._y;
+
+	}
+
+	set y( value ) {
+
+		this._y = value;
+		this._onChangeCallback();
+
+	}
+
+	get z() {
+
+		return this._z;
+
+	}
+
+	set z( value ) {
+
+		this._z = value;
+		this._onChangeCallback();
+
+	}
+
+	get order() {
+
+		return this._order;
+
+	}
+
+	set order( value ) {
+
+		this._order = value;
+		this._onChangeCallback();
+
+	}
+
+	set( x, y, z, order = this._order ) {
+
+		this._x = x;
+		this._y = y;
+		this._z = z;
+		this._order = order;
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new this.constructor( this._x, this._y, this._z, this._order );
+
+	}
+
+	copy( euler ) {
+
+		this._x = euler._x;
+		this._y = euler._y;
+		this._z = euler._z;
+		this._order = euler._order;
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	setFromRotationMatrix( m, order = this._order, update = true ) {
+
+		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+
+		const te = m.elements;
+		const m11 = te[ 0 ], m12 = te[ 4 ], m13 = te[ 8 ];
+		const m21 = te[ 1 ], m22 = te[ 5 ], m23 = te[ 9 ];
+		const m31 = te[ 2 ], m32 = te[ 6 ], m33 = te[ 10 ];
+
+		switch ( order ) {
+
+			case 'XYZ':
+
+				this._y = Math.asin( clamp( m13, - 1, 1 ) );
+
+				if ( Math.abs( m13 ) < 0.9999999 ) {
+
+					this._x = Math.atan2( - m23, m33 );
+					this._z = Math.atan2( - m12, m11 );
+
+				} else {
+
+					this._x = Math.atan2( m32, m22 );
+					this._z = 0;
+
+				}
+
+				break;
+
+			case 'YXZ':
+
+				this._x = Math.asin( - clamp( m23, - 1, 1 ) );
+
+				if ( Math.abs( m23 ) < 0.9999999 ) {
+
+					this._y = Math.atan2( m13, m33 );
+					this._z = Math.atan2( m21, m22 );
+
+				} else {
+
+					this._y = Math.atan2( - m31, m11 );
+					this._z = 0;
+
+				}
+
+				break;
+
+			case 'ZXY':
+
+				this._x = Math.asin( clamp( m32, - 1, 1 ) );
+
+				if ( Math.abs( m32 ) < 0.9999999 ) {
+
+					this._y = Math.atan2( - m31, m33 );
+					this._z = Math.atan2( - m12, m22 );
+
+				} else {
+
+					this._y = 0;
+					this._z = Math.atan2( m21, m11 );
+
+				}
+
+				break;
+
+			case 'ZYX':
+
+				this._y = Math.asin( - clamp( m31, - 1, 1 ) );
+
+				if ( Math.abs( m31 ) < 0.9999999 ) {
+
+					this._x = Math.atan2( m32, m33 );
+					this._z = Math.atan2( m21, m11 );
+
+				} else {
+
+					this._x = 0;
+					this._z = Math.atan2( - m12, m22 );
+
+				}
+
+				break;
+
+			case 'YZX':
+
+				this._z = Math.asin( clamp( m21, - 1, 1 ) );
+
+				if ( Math.abs( m21 ) < 0.9999999 ) {
+
+					this._x = Math.atan2( - m23, m22 );
+					this._y = Math.atan2( - m31, m11 );
+
+				} else {
+
+					this._x = 0;
+					this._y = Math.atan2( m13, m33 );
+
+				}
+
+				break;
+
+			case 'XZY':
+
+				this._z = Math.asin( - clamp( m12, - 1, 1 ) );
+
+				if ( Math.abs( m12 ) < 0.9999999 ) {
+
+					this._x = Math.atan2( m32, m22 );
+					this._y = Math.atan2( m13, m11 );
+
+				} else {
+
+					this._x = Math.atan2( - m23, m33 );
+					this._y = 0;
+
+				}
+
+				break;
+
+			default:
+
+				console.warn( 'THREE.Euler: .setFromRotationMatrix() encountered an unknown order: ' + order );
+
+		}
+
+		this._order = order;
+
+		if ( update === true ) this._onChangeCallback();
+
+		return this;
+
+	}
+
+	setFromQuaternion( q, order, update ) {
+
+		_matrix$2.makeRotationFromQuaternion( q );
+
+		return this.setFromRotationMatrix( _matrix$2, order, update );
+
+	}
+
+	setFromVector3( v, order = this._order ) {
+
+		return this.set( v.x, v.y, v.z, order );
+
+	}
+
+	reorder( newOrder ) {
+
+		// WARNING: this discards revolution information -bhouston
+
+		_quaternion$3.setFromEuler( this );
+
+		return this.setFromQuaternion( _quaternion$3, newOrder );
+
+	}
+
+	equals( euler ) {
+
+		return ( euler._x === this._x ) && ( euler._y === this._y ) && ( euler._z === this._z ) && ( euler._order === this._order );
+
+	}
+
+	fromArray( array ) {
+
+		this._x = array[ 0 ];
+		this._y = array[ 1 ];
+		this._z = array[ 2 ];
+		if ( array[ 3 ] !== undefined ) this._order = array[ 3 ];
+
+		this._onChangeCallback();
+
+		return this;
+
+	}
+
+	toArray( array = [], offset = 0 ) {
+
+		array[ offset ] = this._x;
+		array[ offset + 1 ] = this._y;
+		array[ offset + 2 ] = this._z;
+		array[ offset + 3 ] = this._order;
+
+		return array;
+
+	}
+
+	_onChange( callback ) {
+
+		this._onChangeCallback = callback;
+
+		return this;
+
+	}
+
+	_onChangeCallback() {}
+
+	*[ Symbol.iterator ]() {
+
+		yield this._x;
+		yield this._y;
+		yield this._z;
+		yield this._order;
+
+	}
+
+}
+
+Euler.DEFAULT_ORDER = 'XYZ';
+
+class Layers {
+
+	constructor() {
+
+		this.mask = 1 | 0;
+
+	}
+
+	set( channel ) {
+
+		this.mask = ( 1 << channel | 0 ) >>> 0;
+
+	}
+
+	enable( channel ) {
+
+		this.mask |= 1 << channel | 0;
+
+	}
+
+	enableAll() {
+
+		this.mask = 0xffffffff | 0;
+
+	}
+
+	toggle( channel ) {
+
+		this.mask ^= 1 << channel | 0;
+
+	}
+
+	disable( channel ) {
+
+		this.mask &= ~ ( 1 << channel | 0 );
+
+	}
+
+	disableAll() {
+
+		this.mask = 0;
+
+	}
+
+	test( layers ) {
+
+		return ( this.mask & layers.mask ) !== 0;
+
+	}
+
+	isEnabled( channel ) {
+
+		return ( this.mask & ( 1 << channel | 0 ) ) !== 0;
+
+	}
+
+}
+
+let _object3DId = 0;
+
+const _v1$4 = /*@__PURE__*/ new Vector3();
+const _q1 = /*@__PURE__*/ new Quaternion();
+const _m1$3 = /*@__PURE__*/ new Matrix4();
+const _target = /*@__PURE__*/ new Vector3();
+
+const _position$3 = /*@__PURE__*/ new Vector3();
+const _scale$2 = /*@__PURE__*/ new Vector3();
+const _quaternion$2 = /*@__PURE__*/ new Quaternion();
+
+const _xAxis = /*@__PURE__*/ new Vector3( 1, 0, 0 );
+const _yAxis = /*@__PURE__*/ new Vector3( 0, 1, 0 );
+const _zAxis = /*@__PURE__*/ new Vector3( 0, 0, 1 );
+
+const _addedEvent = { type: 'added' };
+const _removedEvent = { type: 'removed' };
+
+const _childaddedEvent = { type: 'childadded', child: null };
+const _childremovedEvent = { type: 'childremoved', child: null };
+
+class Object3D extends EventDispatcher {
+
+	constructor() {
+
+		super();
+
+		this.isObject3D = true;
+
+		Object.defineProperty( this, 'id', { value: _object3DId ++ } );
+
+		this.uuid = generateUUID();
+
+		this.name = '';
+		this.type = 'Object3D';
+
+		this.parent = null;
+		this.children = [];
+
+		this.up = Object3D.DEFAULT_UP.clone();
+
+		const position = new Vector3();
+		const rotation = new Euler();
+		const quaternion = new Quaternion();
+		const scale = new Vector3( 1, 1, 1 );
+
+		function onRotationChange() {
+
+			quaternion.setFromEuler( rotation, false );
+
+		}
+
+		function onQuaternionChange() {
+
+			rotation.setFromQuaternion( quaternion, undefined, false );
+
+		}
+
+		rotation._onChange( onRotationChange );
+		quaternion._onChange( onQuaternionChange );
+
+		Object.defineProperties( this, {
+			position: {
+				configurable: true,
+				enumerable: true,
+				value: position
+			},
+			rotation: {
+				configurable: true,
+				enumerable: true,
+				value: rotation
+			},
+			quaternion: {
+				configurable: true,
+				enumerable: true,
+				value: quaternion
+			},
+			scale: {
+				configurable: true,
+				enumerable: true,
+				value: scale
+			},
+			modelViewMatrix: {
+				value: new Matrix4()
+			},
+			normalMatrix: {
+				value: new Matrix3()
+			}
+		} );
+
+		this.matrix = new Matrix4();
+		this.matrixWorld = new Matrix4();
+
+		this.matrixAutoUpdate = Object3D.DEFAULT_MATRIX_AUTO_UPDATE;
+
+		this.matrixWorldAutoUpdate = Object3D.DEFAULT_MATRIX_WORLD_AUTO_UPDATE; // checked by the renderer
+		this.matrixWorldNeedsUpdate = false;
+
+		this.layers = new Layers();
+		this.visible = true;
+
+		this.castShadow = false;
+		this.receiveShadow = false;
+
+		this.frustumCulled = true;
+		this.renderOrder = 0;
+
+		this.animations = [];
+
+		this.userData = {};
+
+	}
+
+	onBeforeShadow( /* renderer, object, camera, shadowCamera, geometry, depthMaterial, group */ ) {}
+
+	onAfterShadow( /* renderer, object, camera, shadowCamera, geometry, depthMaterial, group */ ) {}
+
+	onBeforeRender( /* renderer, scene, camera, geometry, material, group */ ) {}
+
+	onAfterRender( /* renderer, scene, camera, geometry, material, group */ ) {}
+
+	applyMatrix4( matrix ) {
+
+		if ( this.matrixAutoUpdate ) this.updateMatrix();
+
+		this.matrix.premultiply( matrix );
+
+		this.matrix.decompose( this.position, this.quaternion, this.scale );
+
+	}
+
+	applyQuaternion( q ) {
+
+		this.quaternion.premultiply( q );
+
+		return this;
+
+	}
+
+	setRotationFromAxisAngle( axis, angle ) {
+
+		// assumes axis is normalized
+
+		this.quaternion.setFromAxisAngle( axis, angle );
+
+	}
+
+	setRotationFromEuler( euler ) {
+
+		this.quaternion.setFromEuler( euler, true );
+
+	}
+
+	setRotationFromMatrix( m ) {
+
+		// assumes the upper 3x3 of m is a pure rotation matrix (i.e, unscaled)
+
+		this.quaternion.setFromRotationMatrix( m );
+
+	}
+
+	setRotationFromQuaternion( q ) {
+
+		// assumes q is normalized
+
+		this.quaternion.copy( q );
+
+	}
+
+	rotateOnAxis( axis, angle ) {
+
+		// rotate object on axis in object space
+		// axis is assumed to be normalized
+
+		_q1.setFromAxisAngle( axis, angle );
+
+		this.quaternion.multiply( _q1 );
+
+		return this;
+
+	}
+
+	rotateOnWorldAxis( axis, angle ) {
+
+		// rotate object on axis in world space
+		// axis is assumed to be normalized
+		// method assumes no rotated parent
+
+		_q1.setFromAxisAngle( axis, angle );
+
+		this.quaternion.premultiply( _q1 );
+
+		return this;
+
+	}
+
+	rotateX( angle ) {
+
+		return this.rotateOnAxis( _xAxis, angle );
+
+	}
+
+	rotateY( angle ) {
+
+		return this.rotateOnAxis( _yAxis, angle );
+
+	}
+
+	rotateZ( angle ) {
+
+		return this.rotateOnAxis( _zAxis, angle );
+
+	}
+
+	translateOnAxis( axis, distance ) {
+
+		// translate object by distance along axis in object space
+		// axis is assumed to be normalized
+
+		_v1$4.copy( axis ).applyQuaternion( this.quaternion );
+
+		this.position.add( _v1$4.multiplyScalar( distance ) );
+
+		return this;
+
+	}
+
+	translateX( distance ) {
+
+		return this.translateOnAxis( _xAxis, distance );
+
+	}
+
+	translateY( distance ) {
+
+		return this.translateOnAxis( _yAxis, distance );
+
+	}
+
+	translateZ( distance ) {
+
+		return this.translateOnAxis( _zAxis, distance );
+
+	}
+
+	localToWorld( vector ) {
+
+		this.updateWorldMatrix( true, false );
+
+		return vector.applyMatrix4( this.matrixWorld );
+
+	}
+
+	worldToLocal( vector ) {
+
+		this.updateWorldMatrix( true, false );
+
+		return vector.applyMatrix4( _m1$3.copy( this.matrixWorld ).invert() );
+
+	}
+
+	lookAt( x, y, z ) {
+
+		// This method does not support objects having non-uniformly-scaled parent(s)
+
+		if ( x.isVector3 ) {
+
+			_target.copy( x );
+
+		} else {
+
+			_target.set( x, y, z );
+
+		}
+
+		const parent = this.parent;
+
+		this.updateWorldMatrix( true, false );
+
+		_position$3.setFromMatrixPosition( this.matrixWorld );
+
+		if ( this.isCamera || this.isLight ) {
+
+			_m1$3.lookAt( _position$3, _target, this.up );
+
+		} else {
+
+			_m1$3.lookAt( _target, _position$3, this.up );
+
+		}
+
+		this.quaternion.setFromRotationMatrix( _m1$3 );
+
+		if ( parent ) {
+
+			_m1$3.extractRotation( parent.matrixWorld );
+			_q1.setFromRotationMatrix( _m1$3 );
+			this.quaternion.premultiply( _q1.invert() );
+
+		}
+
+	}
+
+	add( object ) {
+
+		if ( arguments.length > 1 ) {
+
+			for ( let i = 0; i < arguments.length; i ++ ) {
+
+				this.add( arguments[ i ] );
+
+			}
+
+			return this;
+
+		}
+
+		if ( object === this ) {
+
+			console.error( 'THREE.Object3D.add: object can\'t be added as a child of itself.', object );
+			return this;
+
+		}
+
+		if ( object && object.isObject3D ) {
+
+			object.removeFromParent();
+			object.parent = this;
+			this.children.push( object );
+
+			object.dispatchEvent( _addedEvent );
+
+			_childaddedEvent.child = object;
+			this.dispatchEvent( _childaddedEvent );
+			_childaddedEvent.child = null;
+
+		} else {
+
+			console.error( 'THREE.Object3D.add: object not an instance of THREE.Object3D.', object );
+
+		}
+
+		return this;
+
+	}
+
+	remove( object ) {
+
+		if ( arguments.length > 1 ) {
+
+			for ( let i = 0; i < arguments.length; i ++ ) {
+
+				this.remove( arguments[ i ] );
+
+			}
+
+			return this;
+
+		}
+
+		const index = this.children.indexOf( object );
+
+		if ( index !== - 1 ) {
+
+			object.parent = null;
+			this.children.splice( index, 1 );
+
+			object.dispatchEvent( _removedEvent );
+
+			_childremovedEvent.child = object;
+			this.dispatchEvent( _childremovedEvent );
+			_childremovedEvent.child = null;
+
+		}
+
+		return this;
+
+	}
+
+	removeFromParent() {
+
+		const parent = this.parent;
+
+		if ( parent !== null ) {
+
+			parent.remove( this );
+
+		}
+
+		return this;
+
+	}
+
+	clear() {
+
+		return this.remove( ... this.children );
+
+	}
+
+	attach( object ) {
+
+		// adds object as a child of this, while maintaining the object's world transform
+
+		// Note: This method does not support scene graphs having non-uniformly-scaled nodes(s)
+
+		this.updateWorldMatrix( true, false );
+
+		_m1$3.copy( this.matrixWorld ).invert();
+
+		if ( object.parent !== null ) {
+
+			object.parent.updateWorldMatrix( true, false );
+
+			_m1$3.multiply( object.parent.matrixWorld );
+
+		}
+
+		object.applyMatrix4( _m1$3 );
+
+		object.removeFromParent();
+		object.parent = this;
+		this.children.push( object );
+
+		object.updateWorldMatrix( false, true );
+
+		object.dispatchEvent( _addedEvent );
+
+		_childaddedEvent.child = object;
+		this.dispatchEvent( _childaddedEvent );
+		_childaddedEvent.child = null;
+
+		return this;
+
+	}
+
+	getObjectById( id ) {
+
+		return this.getObjectByProperty( 'id', id );
+
+	}
+
+	getObjectByName( name ) {
+
+		return this.getObjectByProperty( 'name', name );
+
+	}
+
+	getObjectByProperty( name, value ) {
+
+		if ( this[ name ] === value ) return this;
+
+		for ( let i = 0, l = this.children.length; i < l; i ++ ) {
+
+			const child = this.children[ i ];
+			const object = child.getObjectByProperty( name, value );
+
+			if ( object !== undefined ) {
+
+				return object;
+
+			}
+
+		}
+
+		return undefined;
+
+	}
+
+	getObjectsByProperty( name, value, result = [] ) {
+
+		if ( this[ name ] === value ) result.push( this );
+
+		const children = this.children;
+
+		for ( let i = 0, l = children.length; i < l; i ++ ) {
+
+			children[ i ].getObjectsByProperty( name, value, result );
+
+		}
+
+		return result;
+
+	}
+
+	getWorldPosition( target ) {
+
+		this.updateWorldMatrix( true, false );
+
+		return target.setFromMatrixPosition( this.matrixWorld );
+
+	}
+
+	getWorldQuaternion( target ) {
+
+		this.updateWorldMatrix( true, false );
+
+		this.matrixWorld.decompose( _position$3, target, _scale$2 );
+
+		return target;
+
+	}
+
+	getWorldScale( target ) {
+
+		this.updateWorldMatrix( true, false );
+
+		this.matrixWorld.decompose( _position$3, _quaternion$2, target );
+
+		return target;
+
+	}
+
+	getWorldDirection( target ) {
+
+		this.updateWorldMatrix( true, false );
+
+		const e = this.matrixWorld.elements;
+
+		return target.set( e[ 8 ], e[ 9 ], e[ 10 ] ).normalize();
+
+	}
+
+	raycast( /* raycaster, intersects */ ) {}
+
+	traverse( callback ) {
+
+		callback( this );
+
+		const children = this.children;
+
+		for ( let i = 0, l = children.length; i < l; i ++ ) {
+
+			children[ i ].traverse( callback );
+
+		}
+
+	}
+
+	traverseVisible( callback ) {
+
+		if ( this.visible === false ) return;
+
+		callback( this );
+
+		const children = this.children;
+
+		for ( let i = 0, l = children.length; i < l; i ++ ) {
+
+			children[ i ].traverseVisible( callback );
+
+		}
+
+	}
+
+	traverseAncestors( callback ) {
+
+		const parent = this.parent;
+
+		if ( parent !== null ) {
+
+			callback( parent );
+
+			parent.traverseAncestors( callback );
+
+		}
+
+	}
+
+	updateMatrix() {
+
+		this.matrix.compose( this.position, this.quaternion, this.scale );
+
+		this.matrixWorldNeedsUpdate = true;
+
+	}
+
+	updateMatrixWorld( force ) {
+
+		if ( this.matrixAutoUpdate ) this.updateMatrix();
+
+		if ( this.matrixWorldNeedsUpdate || force ) {
+
+			if ( this.matrixWorldAutoUpdate === true ) {
+
+				if ( this.parent === null ) {
+
+					this.matrixWorld.copy( this.matrix );
+
+				} else {
+
+					this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
+
+				}
+
+			}
+
+			this.matrixWorldNeedsUpdate = false;
+
+			force = true;
+
+		}
+
+		// make sure descendants are updated if required
+
+		const children = this.children;
+
+		for ( let i = 0, l = children.length; i < l; i ++ ) {
+
+			const child = children[ i ];
+
+			child.updateMatrixWorld( force );
+
+		}
+
+	}
+
+	updateWorldMatrix( updateParents, updateChildren ) {
+
+		const parent = this.parent;
+
+		if ( updateParents === true && parent !== null ) {
+
+			parent.updateWorldMatrix( true, false );
+
+		}
+
+		if ( this.matrixAutoUpdate ) this.updateMatrix();
+
+		if ( this.matrixWorldAutoUpdate === true ) {
+
+			if ( this.parent === null ) {
+
+				this.matrixWorld.copy( this.matrix );
+
+			} else {
+
+				this.matrixWorld.multiplyMatrices( this.parent.matrixWorld, this.matrix );
+
+			}
+
+		}
+
+		// make sure descendants are updated
+
+		if ( updateChildren === true ) {
+
+			const children = this.children;
+
+			for ( let i = 0, l = children.length; i < l; i ++ ) {
+
+				const child = children[ i ];
+
+				child.updateWorldMatrix( false, true );
+
+			}
+
+		}
+
+	}
+
+	toJSON( meta ) {
+
+		// meta is a string when called from JSON.stringify
+		const isRootObject = ( meta === undefined || typeof meta === 'string' );
+
+		const output = {};
+
+		// meta is a hash used to collect geometries, materials.
+		// not providing it implies that this is the root object
+		// being serialized.
+		if ( isRootObject ) {
+
+			// initialize meta obj
+			meta = {
+				geometries: {},
+				materials: {},
+				textures: {},
+				images: {},
+				shapes: {},
+				skeletons: {},
+				animations: {},
+				nodes: {}
+			};
+
+			output.metadata = {
+				version: 4.6,
+				type: 'Object',
+				generator: 'Object3D.toJSON'
+			};
+
+		}
+
+		// standard Object3D serialization
+
+		const object = {};
+
+		object.uuid = this.uuid;
+		object.type = this.type;
+
+		if ( this.name !== '' ) object.name = this.name;
+		if ( this.castShadow === true ) object.castShadow = true;
+		if ( this.receiveShadow === true ) object.receiveShadow = true;
+		if ( this.visible === false ) object.visible = false;
+		if ( this.frustumCulled === false ) object.frustumCulled = false;
+		if ( this.renderOrder !== 0 ) object.renderOrder = this.renderOrder;
+		if ( Object.keys( this.userData ).length > 0 ) object.userData = this.userData;
+
+		object.layers = this.layers.mask;
+		object.matrix = this.matrix.toArray();
+		object.up = this.up.toArray();
+
+		if ( this.matrixAutoUpdate === false ) object.matrixAutoUpdate = false;
+
+		// object specific properties
+
+		if ( this.isInstancedMesh ) {
+
+			object.type = 'InstancedMesh';
+			object.count = this.count;
+			object.instanceMatrix = this.instanceMatrix.toJSON();
+			if ( this.instanceColor !== null ) object.instanceColor = this.instanceColor.toJSON();
+
+		}
+
+		if ( this.isBatchedMesh ) {
+
+			object.type = 'BatchedMesh';
+			object.perObjectFrustumCulled = this.perObjectFrustumCulled;
+			object.sortObjects = this.sortObjects;
+
+			object.drawRanges = this._drawRanges;
+			object.reservedRanges = this._reservedRanges;
+
+			object.visibility = this._visibility;
+			object.active = this._active;
+			object.bounds = this._bounds.map( bound => ( {
+				boxInitialized: bound.boxInitialized,
+				boxMin: bound.box.min.toArray(),
+				boxMax: bound.box.max.toArray(),
+
+				sphereInitialized: bound.sphereInitialized,
+				sphereRadius: bound.sphere.radius,
+				sphereCenter: bound.sphere.center.toArray()
+			} ) );
+
+			object.maxInstanceCount = this._maxInstanceCount;
+			object.maxVertexCount = this._maxVertexCount;
+			object.maxIndexCount = this._maxIndexCount;
+
+			object.geometryInitialized = this._geometryInitialized;
+			object.geometryCount = this._geometryCount;
+
+			object.matricesTexture = this._matricesTexture.toJSON( meta );
+
+			if ( this._colorsTexture !== null ) object.colorsTexture = this._colorsTexture.toJSON( meta );
+
+			if ( this.boundingSphere !== null ) {
+
+				object.boundingSphere = {
+					center: object.boundingSphere.center.toArray(),
+					radius: object.boundingSphere.radius
+				};
+
+			}
+
+			if ( this.boundingBox !== null ) {
+
+				object.boundingBox = {
+					min: object.boundingBox.min.toArray(),
+					max: object.boundingBox.max.toArray()
+				};
+
+			}
+
+		}
+
+		//
+
+		function serialize( library, element ) {
+
+			if ( library[ element.uuid ] === undefined ) {
+
+				library[ element.uuid ] = element.toJSON( meta );
+
+			}
+
+			return element.uuid;
+
+		}
+
+		if ( this.isScene ) {
+
+			if ( this.background ) {
+
+				if ( this.background.isColor ) {
+
+					object.background = this.background.toJSON();
+
+				} else if ( this.background.isTexture ) {
+
+					object.background = this.background.toJSON( meta ).uuid;
+
+				}
+
+			}
+
+			if ( this.environment && this.environment.isTexture && this.environment.isRenderTargetTexture !== true ) {
+
+				object.environment = this.environment.toJSON( meta ).uuid;
+
+			}
+
+		} else if ( this.isMesh || this.isLine || this.isPoints ) {
+
+			object.geometry = serialize( meta.geometries, this.geometry );
+
+			const parameters = this.geometry.parameters;
+
+			if ( parameters !== undefined && parameters.shapes !== undefined ) {
+
+				const shapes = parameters.shapes;
+
+				if ( Array.isArray( shapes ) ) {
+
+					for ( let i = 0, l = shapes.length; i < l; i ++ ) {
+
+						const shape = shapes[ i ];
+
+						serialize( meta.shapes, shape );
+
+					}
+
+				} else {
+
+					serialize( meta.shapes, shapes );
+
+				}
+
+			}
+
+		}
+
+		if ( this.isSkinnedMesh ) {
+
+			object.bindMode = this.bindMode;
+			object.bindMatrix = this.bindMatrix.toArray();
+
+			if ( this.skeleton !== undefined ) {
+
+				serialize( meta.skeletons, this.skeleton );
+
+				object.skeleton = this.skeleton.uuid;
+
+			}
+
+		}
+
+		if ( this.material !== undefined ) {
+
+			if ( Array.isArray( this.material ) ) {
+
+				const uuids = [];
+
+				for ( let i = 0, l = this.material.length; i < l; i ++ ) {
+
+					uuids.push( serialize( meta.materials, this.material[ i ] ) );
+
+				}
+
+				object.material = uuids;
+
+			} else {
+
+				object.material = serialize( meta.materials, this.material );
+
+			}
+
+		}
+
+		//
+
+		if ( this.children.length > 0 ) {
+
+			object.children = [];
+
+			for ( let i = 0; i < this.children.length; i ++ ) {
+
+				object.children.push( this.children[ i ].toJSON( meta ).object );
+
+			}
+
+		}
+
+		//
+
+		if ( this.animations.length > 0 ) {
+
+			object.animations = [];
+
+			for ( let i = 0; i < this.animations.length; i ++ ) {
+
+				const animation = this.animations[ i ];
+
+				object.animations.push( serialize( meta.animations, animation ) );
+
+			}
+
+		}
+
+		if ( isRootObject ) {
+
+			const geometries = extractFromCache( meta.geometries );
+			const materials = extractFromCache( meta.materials );
+			const textures = extractFromCache( meta.textures );
+			const images = extractFromCache( meta.images );
+			const shapes = extractFromCache( meta.shapes );
+			const skeletons = extractFromCache( meta.skeletons );
+			const animations = extractFromCache( meta.animations );
+			const nodes = extractFromCache( meta.nodes );
+
+			if ( geometries.length > 0 ) output.geometries = geometries;
+			if ( materials.length > 0 ) output.materials = materials;
+			if ( textures.length > 0 ) output.textures = textures;
+			if ( images.length > 0 ) output.images = images;
+			if ( shapes.length > 0 ) output.shapes = shapes;
+			if ( skeletons.length > 0 ) output.skeletons = skeletons;
+			if ( animations.length > 0 ) output.animations = animations;
+			if ( nodes.length > 0 ) output.nodes = nodes;
+
+		}
+
+		output.object = object;
+
+		return output;
+
+		// extract data from the cache hash
+		// remove metadata on each item
+		// and return as array
+		function extractFromCache( cache ) {
+
+			const values = [];
+			for ( const key in cache ) {
+
+				const data = cache[ key ];
+				delete data.metadata;
+				values.push( data );
+
+			}
+
+			return values;
+
+		}
+
+	}
+
+	clone( recursive ) {
+
+		return new this.constructor().copy( this, recursive );
+
+	}
+
+	copy( source, recursive = true ) {
+
+		this.name = source.name;
+
+		this.up.copy( source.up );
+
+		this.position.copy( source.position );
+		this.rotation.order = source.rotation.order;
+		this.quaternion.copy( source.quaternion );
+		this.scale.copy( source.scale );
+
+		this.matrix.copy( source.matrix );
+		this.matrixWorld.copy( source.matrixWorld );
+
+		this.matrixAutoUpdate = source.matrixAutoUpdate;
+
+		this.matrixWorldAutoUpdate = source.matrixWorldAutoUpdate;
+		this.matrixWorldNeedsUpdate = source.matrixWorldNeedsUpdate;
+
+		this.layers.mask = source.layers.mask;
+		this.visible = source.visible;
+
+		this.castShadow = source.castShadow;
+		this.receiveShadow = source.receiveShadow;
+
+		this.frustumCulled = source.frustumCulled;
+		this.renderOrder = source.renderOrder;
+
+		this.animations = source.animations.slice();
+
+		this.userData = JSON.parse( JSON.stringify( source.userData ) );
+
+		if ( recursive === true ) {
+
+			for ( let i = 0; i < source.children.length; i ++ ) {
+
+				const child = source.children[ i ];
+				this.add( child.clone() );
+
+			}
+
+		}
+
+		return this;
+
+	}
+
+}
+
+Object3D.DEFAULT_UP = /*@__PURE__*/ new Vector3( 0, 1, 0 );
+Object3D.DEFAULT_MATRIX_AUTO_UPDATE = true;
+Object3D.DEFAULT_MATRIX_WORLD_AUTO_UPDATE = true;
+
+const _v0$2 = /*@__PURE__*/ new Vector3();
+const _v1$3 = /*@__PURE__*/ new Vector3();
+const _v2$2 = /*@__PURE__*/ new Vector3();
+const _v3$2 = /*@__PURE__*/ new Vector3();
+
+const _vab = /*@__PURE__*/ new Vector3();
+const _vac = /*@__PURE__*/ new Vector3();
+const _vbc = /*@__PURE__*/ new Vector3();
+const _vap = /*@__PURE__*/ new Vector3();
+const _vbp = /*@__PURE__*/ new Vector3();
+const _vcp = /*@__PURE__*/ new Vector3();
+
+class Triangle {
+
+	constructor( a = new Vector3(), b = new Vector3(), c = new Vector3() ) {
+
+		this.a = a;
+		this.b = b;
+		this.c = c;
+
+	}
+
+	static getNormal( a, b, c, target ) {
+
+		target.subVectors( c, b );
+		_v0$2.subVectors( a, b );
+		target.cross( _v0$2 );
+
+		const targetLengthSq = target.lengthSq();
+		if ( targetLengthSq > 0 ) {
+
+			return target.multiplyScalar( 1 / Math.sqrt( targetLengthSq ) );
+
+		}
+
+		return target.set( 0, 0, 0 );
+
+	}
+
+	// static/instance method to calculate barycentric coordinates
+	// based on: http://www.blackpawn.com/texts/pointinpoly/default.html
+	static getBarycoord( point, a, b, c, target ) {
+
+		_v0$2.subVectors( c, a );
+		_v1$3.subVectors( b, a );
+		_v2$2.subVectors( point, a );
+
+		const dot00 = _v0$2.dot( _v0$2 );
+		const dot01 = _v0$2.dot( _v1$3 );
+		const dot02 = _v0$2.dot( _v2$2 );
+		const dot11 = _v1$3.dot( _v1$3 );
+		const dot12 = _v1$3.dot( _v2$2 );
+
+		const denom = ( dot00 * dot11 - dot01 * dot01 );
+
+		// collinear or singular triangle
+		if ( denom === 0 ) {
+
+			target.set( 0, 0, 0 );
+			return null;
+
+		}
+
+		const invDenom = 1 / denom;
+		const u = ( dot11 * dot02 - dot01 * dot12 ) * invDenom;
+		const v = ( dot00 * dot12 - dot01 * dot02 ) * invDenom;
+
+		// barycentric coordinates must always sum to 1
+		return target.set( 1 - u - v, v, u );
+
+	}
+
+	static containsPoint( point, a, b, c ) {
+
+		// if the triangle is degenerate then we can't contain a point
+		if ( this.getBarycoord( point, a, b, c, _v3$2 ) === null ) {
+
+			return false;
+
+		}
+
+		return ( _v3$2.x >= 0 ) && ( _v3$2.y >= 0 ) && ( ( _v3$2.x + _v3$2.y ) <= 1 );
+
+	}
+
+	static getInterpolation( point, p1, p2, p3, v1, v2, v3, target ) {
+
+		if ( this.getBarycoord( point, p1, p2, p3, _v3$2 ) === null ) {
+
+			target.x = 0;
+			target.y = 0;
+			if ( 'z' in target ) target.z = 0;
+			if ( 'w' in target ) target.w = 0;
+			return null;
+
+		}
+
+		target.setScalar( 0 );
+		target.addScaledVector( v1, _v3$2.x );
+		target.addScaledVector( v2, _v3$2.y );
+		target.addScaledVector( v3, _v3$2.z );
+
+		return target;
+
+	}
+
+	static isFrontFacing( a, b, c, direction ) {
+
+		_v0$2.subVectors( c, b );
+		_v1$3.subVectors( a, b );
+
+		// strictly front facing
+		return ( _v0$2.cross( _v1$3 ).dot( direction ) < 0 ) ? true : false;
+
+	}
+
+	set( a, b, c ) {
+
+		this.a.copy( a );
+		this.b.copy( b );
+		this.c.copy( c );
+
+		return this;
+
+	}
+
+	setFromPointsAndIndices( points, i0, i1, i2 ) {
+
+		this.a.copy( points[ i0 ] );
+		this.b.copy( points[ i1 ] );
+		this.c.copy( points[ i2 ] );
+
+		return this;
+
+	}
+
+	setFromAttributeAndIndices( attribute, i0, i1, i2 ) {
+
+		this.a.fromBufferAttribute( attribute, i0 );
+		this.b.fromBufferAttribute( attribute, i1 );
+		this.c.fromBufferAttribute( attribute, i2 );
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+	copy( triangle ) {
+
+		this.a.copy( triangle.a );
+		this.b.copy( triangle.b );
+		this.c.copy( triangle.c );
+
+		return this;
+
+	}
+
+	getArea() {
+
+		_v0$2.subVectors( this.c, this.b );
+		_v1$3.subVectors( this.a, this.b );
+
+		return _v0$2.cross( _v1$3 ).length() * 0.5;
+
+	}
+
+	getMidpoint( target ) {
+
+		return target.addVectors( this.a, this.b ).add( this.c ).multiplyScalar( 1 / 3 );
+
+	}
+
+	getNormal( target ) {
+
+		return Triangle.getNormal( this.a, this.b, this.c, target );
+
+	}
+
+	getPlane( target ) {
+
+		return target.setFromCoplanarPoints( this.a, this.b, this.c );
+
+	}
+
+	getBarycoord( point, target ) {
+
+		return Triangle.getBarycoord( point, this.a, this.b, this.c, target );
+
+	}
+
+	getInterpolation( point, v1, v2, v3, target ) {
+
+		return Triangle.getInterpolation( point, this.a, this.b, this.c, v1, v2, v3, target );
+
+	}
+
+	containsPoint( point ) {
+
+		return Triangle.containsPoint( point, this.a, this.b, this.c );
+
+	}
+
+	isFrontFacing( direction ) {
+
+		return Triangle.isFrontFacing( this.a, this.b, this.c, direction );
+
+	}
+
+	intersectsBox( box ) {
+
+		return box.intersectsTriangle( this );
+
+	}
+
+	closestPointToPoint( p, target ) {
+
+		const a = this.a, b = this.b, c = this.c;
+		let v, w;
+
+		// algorithm thanks to Real-Time Collision Detection by Christer Ericson,
+		// published by Morgan Kaufmann Publishers, (c) 2005 Elsevier Inc.,
+		// under the accompanying license; see chapter 5.1.5 for detailed explanation.
+		// basically, we're distinguishing which of the voronoi regions of the triangle
+		// the point lies in with the minimum amount of redundant computation.
+
+		_vab.subVectors( b, a );
+		_vac.subVectors( c, a );
+		_vap.subVectors( p, a );
+		const d1 = _vab.dot( _vap );
+		const d2 = _vac.dot( _vap );
+		if ( d1 <= 0 && d2 <= 0 ) {
+
+			// vertex region of A; barycentric coords (1, 0, 0)
+			return target.copy( a );
+
+		}
+
+		_vbp.subVectors( p, b );
+		const d3 = _vab.dot( _vbp );
+		const d4 = _vac.dot( _vbp );
+		if ( d3 >= 0 && d4 <= d3 ) {
+
+			// vertex region of B; barycentric coords (0, 1, 0)
+			return target.copy( b );
+
+		}
+
+		const vc = d1 * d4 - d3 * d2;
+		if ( vc <= 0 && d1 >= 0 && d3 <= 0 ) {
+
+			v = d1 / ( d1 - d3 );
+			// edge region of AB; barycentric coords (1-v, v, 0)
+			return target.copy( a ).addScaledVector( _vab, v );
+
+		}
+
+		_vcp.subVectors( p, c );
+		const d5 = _vab.dot( _vcp );
+		const d6 = _vac.dot( _vcp );
+		if ( d6 >= 0 && d5 <= d6 ) {
+
+			// vertex region of C; barycentric coords (0, 0, 1)
+			return target.copy( c );
+
+		}
+
+		const vb = d5 * d2 - d1 * d6;
+		if ( vb <= 0 && d2 >= 0 && d6 <= 0 ) {
+
+			w = d2 / ( d2 - d6 );
+			// edge region of AC; barycentric coords (1-w, 0, w)
+			return target.copy( a ).addScaledVector( _vac, w );
+
+		}
+
+		const va = d3 * d6 - d5 * d4;
+		if ( va <= 0 && ( d4 - d3 ) >= 0 && ( d5 - d6 ) >= 0 ) {
+
+			_vbc.subVectors( c, b );
+			w = ( d4 - d3 ) / ( ( d4 - d3 ) + ( d5 - d6 ) );
+			// edge region of BC; barycentric coords (0, 1-w, w)
+			return target.copy( b ).addScaledVector( _vbc, w ); // edge region of BC
+
+		}
+
+		// face region
+		const denom = 1 / ( va + vb + vc );
+		// u = va * denom
+		v = vb * denom;
+		w = vc * denom;
+
+		return target.copy( a ).addScaledVector( _vab, v ).addScaledVector( _vac, w );
+
+	}
+
+	equals( triangle ) {
+
+		return triangle.a.equals( this.a ) && triangle.b.equals( this.b ) && triangle.c.equals( this.c );
+
+	}
+
+}
+
+const _colorKeywords = { 'aliceblue': 0xF0F8FF, 'antiquewhite': 0xFAEBD7, 'aqua': 0x00FFFF, 'aquamarine': 0x7FFFD4, 'azure': 0xF0FFFF,
+	'beige': 0xF5F5DC, 'bisque': 0xFFE4C4, 'black': 0x000000, 'blanchedalmond': 0xFFEBCD, 'blue': 0x0000FF, 'blueviolet': 0x8A2BE2,
+	'brown': 0xA52A2A, 'burlywood': 0xDEB887, 'cadetblue': 0x5F9EA0, 'chartreuse': 0x7FFF00, 'chocolate': 0xD2691E, 'coral': 0xFF7F50,
+	'cornflowerblue': 0x6495ED, 'cornsilk': 0xFFF8DC, 'crimson': 0xDC143C, 'cyan': 0x00FFFF, 'darkblue': 0x00008B, 'darkcyan': 0x008B8B,
+	'darkgoldenrod': 0xB8860B, 'darkgray': 0xA9A9A9, 'darkgreen': 0x006400, 'darkgrey': 0xA9A9A9, 'darkkhaki': 0xBDB76B, 'darkmagenta': 0x8B008B,
+	'darkolivegreen': 0x556B2F, 'darkorange': 0xFF8C00, 'darkorchid': 0x9932CC, 'darkred': 0x8B0000, 'darksalmon': 0xE9967A, 'darkseagreen': 0x8FBC8F,
+	'darkslateblue': 0x483D8B, 'darkslategray': 0x2F4F4F, 'darkslategrey': 0x2F4F4F, 'darkturquoise': 0x00CED1, 'darkviolet': 0x9400D3,
+	'deeppink': 0xFF1493, 'deepskyblue': 0x00BFFF, 'dimgray': 0x696969, 'dimgrey': 0x696969, 'dodgerblue': 0x1E90FF, 'firebrick': 0xB22222,
+	'floralwhite': 0xFFFAF0, 'forestgreen': 0x228B22, 'fuchsia': 0xFF00FF, 'gainsboro': 0xDCDCDC, 'ghostwhite': 0xF8F8FF, 'gold': 0xFFD700,
+	'goldenrod': 0xDAA520, 'gray': 0x808080, 'green': 0x008000, 'greenyellow': 0xADFF2F, 'grey': 0x808080, 'honeydew': 0xF0FFF0, 'hotpink': 0xFF69B4,
+	'indianred': 0xCD5C5C, 'indigo': 0x4B0082, 'ivory': 0xFFFFF0, 'khaki': 0xF0E68C, 'lavender': 0xE6E6FA, 'lavenderblush': 0xFFF0F5, 'lawngreen': 0x7CFC00,
+	'lemonchiffon': 0xFFFACD, 'lightblue': 0xADD8E6, 'lightcoral': 0xF08080, 'lightcyan': 0xE0FFFF, 'lightgoldenrodyellow': 0xFAFAD2, 'lightgray': 0xD3D3D3,
+	'lightgreen': 0x90EE90, 'lightgrey': 0xD3D3D3, 'lightpink': 0xFFB6C1, 'lightsalmon': 0xFFA07A, 'lightseagreen': 0x20B2AA, 'lightskyblue': 0x87CEFA,
+	'lightslategray': 0x778899, 'lightslategrey': 0x778899, 'lightsteelblue': 0xB0C4DE, 'lightyellow': 0xFFFFE0, 'lime': 0x00FF00, 'limegreen': 0x32CD32,
+	'linen': 0xFAF0E6, 'magenta': 0xFF00FF, 'maroon': 0x800000, 'mediumaquamarine': 0x66CDAA, 'mediumblue': 0x0000CD, 'mediumorchid': 0xBA55D3,
+	'mediumpurple': 0x9370DB, 'mediumseagreen': 0x3CB371, 'mediumslateblue': 0x7B68EE, 'mediumspringgreen': 0x00FA9A, 'mediumturquoise': 0x48D1CC,
+	'mediumvioletred': 0xC71585, 'midnightblue': 0x191970, 'mintcream': 0xF5FFFA, 'mistyrose': 0xFFE4E1, 'moccasin': 0xFFE4B5, 'navajowhite': 0xFFDEAD,
+	'navy': 0x000080, 'oldlace': 0xFDF5E6, 'olive': 0x808000, 'olivedrab': 0x6B8E23, 'orange': 0xFFA500, 'orangered': 0xFF4500, 'orchid': 0xDA70D6,
+	'palegoldenrod': 0xEEE8AA, 'palegreen': 0x98FB98, 'paleturquoise': 0xAFEEEE, 'palevioletred': 0xDB7093, 'papayawhip': 0xFFEFD5, 'peachpuff': 0xFFDAB9,
+	'peru': 0xCD853F, 'pink': 0xFFC0CB, 'plum': 0xDDA0DD, 'powderblue': 0xB0E0E6, 'purple': 0x800080, 'rebeccapurple': 0x663399, 'red': 0xFF0000, 'rosybrown': 0xBC8F8F,
+	'royalblue': 0x4169E1, 'saddlebrown': 0x8B4513, 'salmon': 0xFA8072, 'sandybrown': 0xF4A460, 'seagreen': 0x2E8B57, 'seashell': 0xFFF5EE,
+	'sienna': 0xA0522D, 'silver': 0xC0C0C0, 'skyblue': 0x87CEEB, 'slateblue': 0x6A5ACD, 'slategray': 0x708090, 'slategrey': 0x708090, 'snow': 0xFFFAFA,
+	'springgreen': 0x00FF7F, 'steelblue': 0x4682B4, 'tan': 0xD2B48C, 'teal': 0x008080, 'thistle': 0xD8BFD8, 'tomato': 0xFF6347, 'turquoise': 0x40E0D0,
+	'violet': 0xEE82EE, 'wheat': 0xF5DEB3, 'white': 0xFFFFFF, 'whitesmoke': 0xF5F5F5, 'yellow': 0xFFFF00, 'yellowgreen': 0x9ACD32 };
+
+const _hslA = { h: 0, s: 0, l: 0 };
+const _hslB = { h: 0, s: 0, l: 0 };
+
+function hue2rgb( p, q, t ) {
+
+	if ( t < 0 ) t += 1;
+	if ( t > 1 ) t -= 1;
+	if ( t < 1 / 6 ) return p + ( q - p ) * 6 * t;
+	if ( t < 1 / 2 ) return q;
+	if ( t < 2 / 3 ) return p + ( q - p ) * 6 * ( 2 / 3 - t );
+	return p;
+
+}
+
+class Color {
+
+	constructor( r, g, b ) {
+
+		this.isColor = true;
+
+		this.r = 1;
+		this.g = 1;
+		this.b = 1;
+
+		return this.set( r, g, b );
+
+	}
+
+	set( r, g, b ) {
+
+		if ( g === undefined && b === undefined ) {
+
+			// r is THREE.Color, hex or string
+
+			const value = r;
+
+			if ( value && value.isColor ) {
+
+				this.copy( value );
+
+			} else if ( typeof value === 'number' ) {
+
+				this.setHex( value );
+
+			} else if ( typeof value === 'string' ) {
+
+				this.setStyle( value );
+
+			}
+
+		} else {
+
+			this.setRGB( r, g, b );
+
+		}
+
+		return this;
+
+	}
+
+	setScalar( scalar ) {
+
+		this.r = scalar;
+		this.g = scalar;
+		this.b = scalar;
+
+		return this;
+
+	}
+
+	setHex( hex, colorSpace = SRGBColorSpace ) {
+
+		hex = Math.floor( hex );
+
+		this.r = ( hex >> 16 & 255 ) / 255;
+		this.g = ( hex >> 8 & 255 ) / 255;
+		this.b = ( hex & 255 ) / 255;
+
+		ColorManagement.toWorkingColorSpace( this, colorSpace );
+
+		return this;
+
+	}
+
+	setRGB( r, g, b, colorSpace = ColorManagement.workingColorSpace ) {
+
+		this.r = r;
+		this.g = g;
+		this.b = b;
+
+		ColorManagement.toWorkingColorSpace( this, colorSpace );
+
+		return this;
+
+	}
+
+	setHSL( h, s, l, colorSpace = ColorManagement.workingColorSpace ) {
+
+		// h,s,l ranges are in 0.0 - 1.0
+		h = euclideanModulo( h, 1 );
+		s = clamp( s, 0, 1 );
+		l = clamp( l, 0, 1 );
+
+		if ( s === 0 ) {
+
+			this.r = this.g = this.b = l;
+
+		} else {
+
+			const p = l <= 0.5 ? l * ( 1 + s ) : l + s - ( l * s );
+			const q = ( 2 * l ) - p;
+
+			this.r = hue2rgb( q, p, h + 1 / 3 );
+			this.g = hue2rgb( q, p, h );
+			this.b = hue2rgb( q, p, h - 1 / 3 );
+
+		}
+
+		ColorManagement.toWorkingColorSpace( this, colorSpace );
+
+		return this;
+
+	}
+
+	setStyle( style, colorSpace = SRGBColorSpace ) {
+
+		function handleAlpha( string ) {
+
+			if ( string === undefined ) return;
+
+			if ( parseFloat( string ) < 1 ) {
+
+				console.warn( 'THREE.Color: Alpha component of ' + style + ' will be ignored.' );
+
+			}
+
+		}
+
+
+		let m;
+
+		if ( m = /^(\w+)\(([^\)]*)\)/.exec( style ) ) {
+
+			// rgb / hsl
+
+			let color;
+			const name = m[ 1 ];
+			const components = m[ 2 ];
+
+			switch ( name ) {
+
+				case 'rgb':
+				case 'rgba':
+
+					if ( color = /^\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {
+
+						// rgb(255,0,0) rgba(255,0,0,0.5)
+
+						handleAlpha( color[ 4 ] );
+
+						return this.setRGB(
+							Math.min( 255, parseInt( color[ 1 ], 10 ) ) / 255,
+							Math.min( 255, parseInt( color[ 2 ], 10 ) ) / 255,
+							Math.min( 255, parseInt( color[ 3 ], 10 ) ) / 255,
+							colorSpace
+						);
+
+					}
+
+					if ( color = /^\s*(\d+)\%\s*,\s*(\d+)\%\s*,\s*(\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {
+
+						// rgb(100%,0%,0%) rgba(100%,0%,0%,0.5)
+
+						handleAlpha( color[ 4 ] );
+
+						return this.setRGB(
+							Math.min( 100, parseInt( color[ 1 ], 10 ) ) / 100,
+							Math.min( 100, parseInt( color[ 2 ], 10 ) ) / 100,
+							Math.min( 100, parseInt( color[ 3 ], 10 ) ) / 100,
+							colorSpace
+						);
+
+					}
+
+					break;
+
+				case 'hsl':
+				case 'hsla':
+
+					if ( color = /^\s*(\d*\.?\d+)\s*,\s*(\d*\.?\d+)\%\s*,\s*(\d*\.?\d+)\%\s*(?:,\s*(\d*\.?\d+)\s*)?$/.exec( components ) ) {
+
+						// hsl(120,50%,50%) hsla(120,50%,50%,0.5)
+
+						handleAlpha( color[ 4 ] );
+
+						return this.setHSL(
+							parseFloat( color[ 1 ] ) / 360,
+							parseFloat( color[ 2 ] ) / 100,
+							parseFloat( color[ 3 ] ) / 100,
+							colorSpace
+						);
+
+					}
+
+					break;
+
+				default:
+
+					console.warn( 'THREE.Color: Unknown color model ' + style );
+
+			}
+
+		} else if ( m = /^\#([A-Fa-f\d]+)$/.exec( style ) ) {
+
+			// hex color
+
+			const hex = m[ 1 ];
+			const size = hex.length;
+
+			if ( size === 3 ) {
+
+				// #ff0
+				return this.setRGB(
+					parseInt( hex.charAt( 0 ), 16 ) / 15,
+					parseInt( hex.charAt( 1 ), 16 ) / 15,
+					parseInt( hex.charAt( 2 ), 16 ) / 15,
+					colorSpace
+				);
+
+			} else if ( size === 6 ) {
+
+				// #ff0000
+				return this.setHex( parseInt( hex, 16 ), colorSpace );
+
+			} else {
+
+				console.warn( 'THREE.Color: Invalid hex color ' + style );
+
+			}
+
+		} else if ( style && style.length > 0 ) {
+
+			return this.setColorName( style, colorSpace );
+
+		}
+
+		return this;
+
+	}
+
+	setColorName( style, colorSpace = SRGBColorSpace ) {
+
+		// color keywords
+		const hex = _colorKeywords[ style.toLowerCase() ];
+
+		if ( hex !== undefined ) {
+
+			// red
+			this.setHex( hex, colorSpace );
+
+		} else {
+
+			// unknown color
+			console.warn( 'THREE.Color: Unknown color ' + style );
+
+		}
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new this.constructor( this.r, this.g, this.b );
+
+	}
+
+	copy( color ) {
+
+		this.r = color.r;
+		this.g = color.g;
+		this.b = color.b;
+
+		return this;
+
+	}
+
+	copySRGBToLinear( color ) {
+
+		this.r = SRGBToLinear( color.r );
+		this.g = SRGBToLinear( color.g );
+		this.b = SRGBToLinear( color.b );
+
+		return this;
+
+	}
+
+	copyLinearToSRGB( color ) {
+
+		this.r = LinearToSRGB( color.r );
+		this.g = LinearToSRGB( color.g );
+		this.b = LinearToSRGB( color.b );
+
+		return this;
+
+	}
+
+	convertSRGBToLinear() {
+
+		this.copySRGBToLinear( this );
+
+		return this;
+
+	}
+
+	convertLinearToSRGB() {
+
+		this.copyLinearToSRGB( this );
+
+		return this;
+
+	}
+
+	getHex( colorSpace = SRGBColorSpace ) {
+
+		ColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );
+
+		return Math.round( clamp( _color.r * 255, 0, 255 ) ) * 65536 + Math.round( clamp( _color.g * 255, 0, 255 ) ) * 256 + Math.round( clamp( _color.b * 255, 0, 255 ) );
+
+	}
+
+	getHexString( colorSpace = SRGBColorSpace ) {
+
+		return ( '000000' + this.getHex( colorSpace ).toString( 16 ) ).slice( - 6 );
+
+	}
+
+	getHSL( target, colorSpace = ColorManagement.workingColorSpace ) {
+
+		// h,s,l ranges are in 0.0 - 1.0
+
+		ColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );
+
+		const r = _color.r, g = _color.g, b = _color.b;
+
+		const max = Math.max( r, g, b );
+		const min = Math.min( r, g, b );
+
+		let hue, saturation;
+		const lightness = ( min + max ) / 2.0;
+
+		if ( min === max ) {
+
+			hue = 0;
+			saturation = 0;
+
+		} else {
+
+			const delta = max - min;
+
+			saturation = lightness <= 0.5 ? delta / ( max + min ) : delta / ( 2 - max - min );
+
+			switch ( max ) {
+
+				case r: hue = ( g - b ) / delta + ( g < b ? 6 : 0 ); break;
+				case g: hue = ( b - r ) / delta + 2; break;
+				case b: hue = ( r - g ) / delta + 4; break;
+
+			}
+
+			hue /= 6;
+
+		}
+
+		target.h = hue;
+		target.s = saturation;
+		target.l = lightness;
+
+		return target;
+
+	}
+
+	getRGB( target, colorSpace = ColorManagement.workingColorSpace ) {
+
+		ColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );
+
+		target.r = _color.r;
+		target.g = _color.g;
+		target.b = _color.b;
+
+		return target;
+
+	}
+
+	getStyle( colorSpace = SRGBColorSpace ) {
+
+		ColorManagement.fromWorkingColorSpace( _color.copy( this ), colorSpace );
+
+		const r = _color.r, g = _color.g, b = _color.b;
+
+		if ( colorSpace !== SRGBColorSpace ) {
+
+			// Requires CSS Color Module Level 4 (https://www.w3.org/TR/css-color-4/).
+			return `color(${ colorSpace } ${ r.toFixed( 3 ) } ${ g.toFixed( 3 ) } ${ b.toFixed( 3 ) })`;
+
+		}
+
+		return `rgb(${ Math.round( r * 255 ) },${ Math.round( g * 255 ) },${ Math.round( b * 255 ) })`;
+
+	}
+
+	offsetHSL( h, s, l ) {
+
+		this.getHSL( _hslA );
+
+		return this.setHSL( _hslA.h + h, _hslA.s + s, _hslA.l + l );
+
+	}
+
+	add( color ) {
+
+		this.r += color.r;
+		this.g += color.g;
+		this.b += color.b;
+
+		return this;
+
+	}
+
+	addColors( color1, color2 ) {
+
+		this.r = color1.r + color2.r;
+		this.g = color1.g + color2.g;
+		this.b = color1.b + color2.b;
+
+		return this;
+
+	}
+
+	addScalar( s ) {
+
+		this.r += s;
+		this.g += s;
+		this.b += s;
+
+		return this;
+
+	}
+
+	sub( color ) {
+
+		this.r = Math.max( 0, this.r - color.r );
+		this.g = Math.max( 0, this.g - color.g );
+		this.b = Math.max( 0, this.b - color.b );
+
+		return this;
+
+	}
+
+	multiply( color ) {
+
+		this.r *= color.r;
+		this.g *= color.g;
+		this.b *= color.b;
+
+		return this;
+
+	}
+
+	multiplyScalar( s ) {
+
+		this.r *= s;
+		this.g *= s;
+		this.b *= s;
+
+		return this;
+
+	}
+
+	lerp( color, alpha ) {
+
+		this.r += ( color.r - this.r ) * alpha;
+		this.g += ( color.g - this.g ) * alpha;
+		this.b += ( color.b - this.b ) * alpha;
+
+		return this;
+
+	}
+
+	lerpColors( color1, color2, alpha ) {
+
+		this.r = color1.r + ( color2.r - color1.r ) * alpha;
+		this.g = color1.g + ( color2.g - color1.g ) * alpha;
+		this.b = color1.b + ( color2.b - color1.b ) * alpha;
+
+		return this;
+
+	}
+
+	lerpHSL( color, alpha ) {
+
+		this.getHSL( _hslA );
+		color.getHSL( _hslB );
+
+		const h = lerp( _hslA.h, _hslB.h, alpha );
+		const s = lerp( _hslA.s, _hslB.s, alpha );
+		const l = lerp( _hslA.l, _hslB.l, alpha );
+
+		this.setHSL( h, s, l );
+
+		return this;
+
+	}
+
+	setFromVector3( v ) {
+
+		this.r = v.x;
+		this.g = v.y;
+		this.b = v.z;
+
+		return this;
+
+	}
+
+	applyMatrix3( m ) {
+
+		const r = this.r, g = this.g, b = this.b;
+		const e = m.elements;
+
+		this.r = e[ 0 ] * r + e[ 3 ] * g + e[ 6 ] * b;
+		this.g = e[ 1 ] * r + e[ 4 ] * g + e[ 7 ] * b;
+		this.b = e[ 2 ] * r + e[ 5 ] * g + e[ 8 ] * b;
+
+		return this;
+
+	}
+
+	equals( c ) {
+
+		return ( c.r === this.r ) && ( c.g === this.g ) && ( c.b === this.b );
+
+	}
+
+	fromArray( array, offset = 0 ) {
+
+		this.r = array[ offset ];
+		this.g = array[ offset + 1 ];
+		this.b = array[ offset + 2 ];
+
+		return this;
+
+	}
+
+	toArray( array = [], offset = 0 ) {
+
+		array[ offset ] = this.r;
+		array[ offset + 1 ] = this.g;
+		array[ offset + 2 ] = this.b;
+
+		return array;
+
+	}
+
+	fromBufferAttribute( attribute, index ) {
+
+		this.r = attribute.getX( index );
+		this.g = attribute.getY( index );
+		this.b = attribute.getZ( index );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		return this.getHex();
+
+	}
+
+	*[ Symbol.iterator ]() {
+
+		yield this.r;
+		yield this.g;
+		yield this.b;
+
+	}
+
+}
+
+const _color = /*@__PURE__*/ new Color();
+
+Color.NAMES = _colorKeywords;
+
+let _materialId = 0;
+
+class Material extends EventDispatcher {
+
+	constructor() {
+
+		super();
+
+		this.isMaterial = true;
+
+		Object.defineProperty( this, 'id', { value: _materialId ++ } );
+
+		this.uuid = generateUUID();
+
+		this.name = '';
+		this.type = 'Material';
+
+		this.blending = NormalBlending;
+		this.side = FrontSide;
+		this.vertexColors = false;
+
+		this.opacity = 1;
+		this.transparent = false;
+		this.alphaHash = false;
+
+		this.blendSrc = SrcAlphaFactor;
+		this.blendDst = OneMinusSrcAlphaFactor;
+		this.blendEquation = AddEquation;
+		this.blendSrcAlpha = null;
+		this.blendDstAlpha = null;
+		this.blendEquationAlpha = null;
+		this.blendColor = new Color( 0, 0, 0 );
+		this.blendAlpha = 0;
+
+		this.depthFunc = LessEqualDepth;
+		this.depthTest = true;
+		this.depthWrite = true;
+
+		this.stencilWriteMask = 0xff;
+		this.stencilFunc = AlwaysStencilFunc;
+		this.stencilRef = 0;
+		this.stencilFuncMask = 0xff;
+		this.stencilFail = KeepStencilOp;
+		this.stencilZFail = KeepStencilOp;
+		this.stencilZPass = KeepStencilOp;
+		this.stencilWrite = false;
+
+		this.clippingPlanes = null;
+		this.clipIntersection = false;
+		this.clipShadows = false;
+
+		this.shadowSide = null;
+
+		this.colorWrite = true;
+
+		this.precision = null; // override the renderer's default precision for this material
+
+		this.polygonOffset = false;
+		this.polygonOffsetFactor = 0;
+		this.polygonOffsetUnits = 0;
+
+		this.dithering = false;
+
+		this.alphaToCoverage = false;
+		this.premultipliedAlpha = false;
+		this.forceSinglePass = false;
+
+		this.visible = true;
+
+		this.toneMapped = true;
+
+		this.userData = {};
+
+		this.version = 0;
+
+		this._alphaTest = 0;
+
+	}
+
+	get alphaTest() {
+
+		return this._alphaTest;
+
+	}
+
+	set alphaTest( value ) {
+
+		if ( this._alphaTest > 0 !== value > 0 ) {
+
+			this.version ++;
+
+		}
+
+		this._alphaTest = value;
+
+	}
+
+	// onBeforeRender and onBeforeCompile only supported in WebGLRenderer
+
+	onBeforeRender( /* renderer, scene, camera, geometry, object, group */ ) {}
+
+	onBeforeCompile( /* shaderobject, renderer */ ) {}
+
+	customProgramCacheKey() {
+
+		return this.onBeforeCompile.toString();
+
+	}
+
+	setValues( values ) {
+
+		if ( values === undefined ) return;
+
+		for ( const key in values ) {
+
+			const newValue = values[ key ];
+
+			if ( newValue === undefined ) {
+
+				console.warn( `THREE.Material: parameter '${ key }' has value of undefined.` );
+				continue;
+
+			}
+
+			const currentValue = this[ key ];
+
+			if ( currentValue === undefined ) {
+
+				console.warn( `THREE.Material: '${ key }' is not a property of THREE.${ this.type }.` );
+				continue;
+
+			}
+
+			if ( currentValue && currentValue.isColor ) {
+
+				currentValue.set( newValue );
+
+			} else if ( ( currentValue && currentValue.isVector3 ) && ( newValue && newValue.isVector3 ) ) {
+
+				currentValue.copy( newValue );
+
+			} else {
+
+				this[ key ] = newValue;
+
+			}
+
+		}
+
+	}
+
+	toJSON( meta ) {
+
+		const isRootObject = ( meta === undefined || typeof meta === 'string' );
+
+		if ( isRootObject ) {
+
+			meta = {
+				textures: {},
+				images: {}
+			};
+
+		}
+
+		const data = {
+			metadata: {
+				version: 4.6,
+				type: 'Material',
+				generator: 'Material.toJSON'
+			}
+		};
+
+		// standard Material serialization
+		data.uuid = this.uuid;
+		data.type = this.type;
+
+		if ( this.name !== '' ) data.name = this.name;
+
+		if ( this.color && this.color.isColor ) data.color = this.color.getHex();
+
+		if ( this.roughness !== undefined ) data.roughness = this.roughness;
+		if ( this.metalness !== undefined ) data.metalness = this.metalness;
+
+		if ( this.sheen !== undefined ) data.sheen = this.sheen;
+		if ( this.sheenColor && this.sheenColor.isColor ) data.sheenColor = this.sheenColor.getHex();
+		if ( this.sheenRoughness !== undefined ) data.sheenRoughness = this.sheenRoughness;
+		if ( this.emissive && this.emissive.isColor ) data.emissive = this.emissive.getHex();
+		if ( this.emissiveIntensity !== undefined && this.emissiveIntensity !== 1 ) data.emissiveIntensity = this.emissiveIntensity;
+
+		if ( this.specular && this.specular.isColor ) data.specular = this.specular.getHex();
+		if ( this.specularIntensity !== undefined ) data.specularIntensity = this.specularIntensity;
+		if ( this.specularColor && this.specularColor.isColor ) data.specularColor = this.specularColor.getHex();
+		if ( this.shininess !== undefined ) data.shininess = this.shininess;
+		if ( this.clearcoat !== undefined ) data.clearcoat = this.clearcoat;
+		if ( this.clearcoatRoughness !== undefined ) data.clearcoatRoughness = this.clearcoatRoughness;
+
+		if ( this.clearcoatMap && this.clearcoatMap.isTexture ) {
+
+			data.clearcoatMap = this.clearcoatMap.toJSON( meta ).uuid;
+
+		}
+
+		if ( this.clearcoatRoughnessMap && this.clearcoatRoughnessMap.isTexture ) {
+
+			data.clearcoatRoughnessMap = this.clearcoatRoughnessMap.toJSON( meta ).uuid;
+
+		}
+
+		if ( this.clearcoatNormalMap && this.clearcoatNormalMap.isTexture ) {
+
+			data.clearcoatNormalMap = this.clearcoatNormalMap.toJSON( meta ).uuid;
+			data.clearcoatNormalScale = this.clearcoatNormalScale.toArray();
+
+		}
+
+		if ( this.dispersion !== undefined ) data.dispersion = this.dispersion;
+
+		if ( this.iridescence !== undefined ) data.iridescence = this.iridescence;
+		if ( this.iridescenceIOR !== undefined ) data.iridescenceIOR = this.iridescenceIOR;
+		if ( this.iridescenceThicknessRange !== undefined ) data.iridescenceThicknessRange = this.iridescenceThicknessRange;
+
+		if ( this.iridescenceMap && this.iridescenceMap.isTexture ) {
+
+			data.iridescenceMap = this.iridescenceMap.toJSON( meta ).uuid;
+
+		}
+
+		if ( this.iridescenceThicknessMap && this.iridescenceThicknessMap.isTexture ) {
+
+			data.iridescenceThicknessMap = this.iridescenceThicknessMap.toJSON( meta ).uuid;
+
+		}
+
+		if ( this.anisotropy !== undefined ) data.anisotropy = this.anisotropy;
+		if ( this.anisotropyRotation !== undefined ) data.anisotropyRotation = this.anisotropyRotation;
+
+		if ( this.anisotropyMap && this.anisotropyMap.isTexture ) {
+
+			data.anisotropyMap = this.anisotropyMap.toJSON( meta ).uuid;
+
+		}
+
+		if ( this.map && this.map.isTexture ) data.map = this.map.toJSON( meta ).uuid;
+		if ( this.matcap && this.matcap.isTexture ) data.matcap = this.matcap.toJSON( meta ).uuid;
+		if ( this.alphaMap && this.alphaMap.isTexture ) data.alphaMap = this.alphaMap.toJSON( meta ).uuid;
+
+		if ( this.lightMap && this.lightMap.isTexture ) {
+
+			data.lightMap = this.lightMap.toJSON( meta ).uuid;
+			data.lightMapIntensity = this.lightMapIntensity;
+
+		}
+
+		if ( this.aoMap && this.aoMap.isTexture ) {
+
+			data.aoMap = this.aoMap.toJSON( meta ).uuid;
+			data.aoMapIntensity = this.aoMapIntensity;
+
+		}
+
+		if ( this.bumpMap && this.bumpMap.isTexture ) {
+
+			data.bumpMap = this.bumpMap.toJSON( meta ).uuid;
+			data.bumpScale = this.bumpScale;
+
+		}
+
+		if ( this.normalMap && this.normalMap.isTexture ) {
+
+			data.normalMap = this.normalMap.toJSON( meta ).uuid;
+			data.normalMapType = this.normalMapType;
+			data.normalScale = this.normalScale.toArray();
+
+		}
+
+		if ( this.displacementMap && this.displacementMap.isTexture ) {
+
+			data.displacementMap = this.displacementMap.toJSON( meta ).uuid;
+			data.displacementScale = this.displacementScale;
+			data.displacementBias = this.displacementBias;
+
+		}
+
+		if ( this.roughnessMap && this.roughnessMap.isTexture ) data.roughnessMap = this.roughnessMap.toJSON( meta ).uuid;
+		if ( this.metalnessMap && this.metalnessMap.isTexture ) data.metalnessMap = this.metalnessMap.toJSON( meta ).uuid;
+
+		if ( this.emissiveMap && this.emissiveMap.isTexture ) data.emissiveMap = this.emissiveMap.toJSON( meta ).uuid;
+		if ( this.specularMap && this.specularMap.isTexture ) data.specularMap = this.specularMap.toJSON( meta ).uuid;
+		if ( this.specularIntensityMap && this.specularIntensityMap.isTexture ) data.specularIntensityMap = this.specularIntensityMap.toJSON( meta ).uuid;
+		if ( this.specularColorMap && this.specularColorMap.isTexture ) data.specularColorMap = this.specularColorMap.toJSON( meta ).uuid;
+
+		if ( this.envMap && this.envMap.isTexture ) {
+
+			data.envMap = this.envMap.toJSON( meta ).uuid;
+
+			if ( this.combine !== undefined ) data.combine = this.combine;
+
+		}
+
+		if ( this.envMapRotation !== undefined ) data.envMapRotation = this.envMapRotation.toArray();
+		if ( this.envMapIntensity !== undefined ) data.envMapIntensity = this.envMapIntensity;
+		if ( this.reflectivity !== undefined ) data.reflectivity = this.reflectivity;
+		if ( this.refractionRatio !== undefined ) data.refractionRatio = this.refractionRatio;
+
+		if ( this.gradientMap && this.gradientMap.isTexture ) {
+
+			data.gradientMap = this.gradientMap.toJSON( meta ).uuid;
+
+		}
+
+		if ( this.transmission !== undefined ) data.transmission = this.transmission;
+		if ( this.transmissionMap && this.transmissionMap.isTexture ) data.transmissionMap = this.transmissionMap.toJSON( meta ).uuid;
+		if ( this.thickness !== undefined ) data.thickness = this.thickness;
+		if ( this.thicknessMap && this.thicknessMap.isTexture ) data.thicknessMap = this.thicknessMap.toJSON( meta ).uuid;
+		if ( this.attenuationDistance !== undefined && this.attenuationDistance !== Infinity ) data.attenuationDistance = this.attenuationDistance;
+		if ( this.attenuationColor !== undefined ) data.attenuationColor = this.attenuationColor.getHex();
+
+		if ( this.size !== undefined ) data.size = this.size;
+		if ( this.shadowSide !== null ) data.shadowSide = this.shadowSide;
+		if ( this.sizeAttenuation !== undefined ) data.sizeAttenuation = this.sizeAttenuation;
+
+		if ( this.blending !== NormalBlending ) data.blending = this.blending;
+		if ( this.side !== FrontSide ) data.side = this.side;
+		if ( this.vertexColors === true ) data.vertexColors = true;
+
+		if ( this.opacity < 1 ) data.opacity = this.opacity;
+		if ( this.transparent === true ) data.transparent = true;
+
+		if ( this.blendSrc !== SrcAlphaFactor ) data.blendSrc = this.blendSrc;
+		if ( this.blendDst !== OneMinusSrcAlphaFactor ) data.blendDst = this.blendDst;
+		if ( this.blendEquation !== AddEquation ) data.blendEquation = this.blendEquation;
+		if ( this.blendSrcAlpha !== null ) data.blendSrcAlpha = this.blendSrcAlpha;
+		if ( this.blendDstAlpha !== null ) data.blendDstAlpha = this.blendDstAlpha;
+		if ( this.blendEquationAlpha !== null ) data.blendEquationAlpha = this.blendEquationAlpha;
+		if ( this.blendColor && this.blendColor.isColor ) data.blendColor = this.blendColor.getHex();
+		if ( this.blendAlpha !== 0 ) data.blendAlpha = this.blendAlpha;
+
+		if ( this.depthFunc !== LessEqualDepth ) data.depthFunc = this.depthFunc;
+		if ( this.depthTest === false ) data.depthTest = this.depthTest;
+		if ( this.depthWrite === false ) data.depthWrite = this.depthWrite;
+		if ( this.colorWrite === false ) data.colorWrite = this.colorWrite;
+
+		if ( this.stencilWriteMask !== 0xff ) data.stencilWriteMask = this.stencilWriteMask;
+		if ( this.stencilFunc !== AlwaysStencilFunc ) data.stencilFunc = this.stencilFunc;
+		if ( this.stencilRef !== 0 ) data.stencilRef = this.stencilRef;
+		if ( this.stencilFuncMask !== 0xff ) data.stencilFuncMask = this.stencilFuncMask;
+		if ( this.stencilFail !== KeepStencilOp ) data.stencilFail = this.stencilFail;
+		if ( this.stencilZFail !== KeepStencilOp ) data.stencilZFail = this.stencilZFail;
+		if ( this.stencilZPass !== KeepStencilOp ) data.stencilZPass = this.stencilZPass;
+		if ( this.stencilWrite === true ) data.stencilWrite = this.stencilWrite;
+
+		// rotation (SpriteMaterial)
+		if ( this.rotation !== undefined && this.rotation !== 0 ) data.rotation = this.rotation;
+
+		if ( this.polygonOffset === true ) data.polygonOffset = true;
+		if ( this.polygonOffsetFactor !== 0 ) data.polygonOffsetFactor = this.polygonOffsetFactor;
+		if ( this.polygonOffsetUnits !== 0 ) data.polygonOffsetUnits = this.polygonOffsetUnits;
+
+		if ( this.linewidth !== undefined && this.linewidth !== 1 ) data.linewidth = this.linewidth;
+		if ( this.dashSize !== undefined ) data.dashSize = this.dashSize;
+		if ( this.gapSize !== undefined ) data.gapSize = this.gapSize;
+		if ( this.scale !== undefined ) data.scale = this.scale;
+
+		if ( this.dithering === true ) data.dithering = true;
+
+		if ( this.alphaTest > 0 ) data.alphaTest = this.alphaTest;
+		if ( this.alphaHash === true ) data.alphaHash = true;
+		if ( this.alphaToCoverage === true ) data.alphaToCoverage = true;
+		if ( this.premultipliedAlpha === true ) data.premultipliedAlpha = true;
+		if ( this.forceSinglePass === true ) data.forceSinglePass = true;
+
+		if ( this.wireframe === true ) data.wireframe = true;
+		if ( this.wireframeLinewidth > 1 ) data.wireframeLinewidth = this.wireframeLinewidth;
+		if ( this.wireframeLinecap !== 'round' ) data.wireframeLinecap = this.wireframeLinecap;
+		if ( this.wireframeLinejoin !== 'round' ) data.wireframeLinejoin = this.wireframeLinejoin;
+
+		if ( this.flatShading === true ) data.flatShading = true;
+
+		if ( this.visible === false ) data.visible = false;
+
+		if ( this.toneMapped === false ) data.toneMapped = false;
+
+		if ( this.fog === false ) data.fog = false;
+
+		if ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;
+
+		// TODO: Copied from Object3D.toJSON
+
+		function extractFromCache( cache ) {
+
+			const values = [];
+
+			for ( const key in cache ) {
+
+				const data = cache[ key ];
+				delete data.metadata;
+				values.push( data );
+
+			}
+
+			return values;
+
+		}
+
+		if ( isRootObject ) {
+
+			const textures = extractFromCache( meta.textures );
+			const images = extractFromCache( meta.images );
+
+			if ( textures.length > 0 ) data.textures = textures;
+			if ( images.length > 0 ) data.images = images;
+
+		}
+
+		return data;
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+	copy( source ) {
+
+		this.name = source.name;
+
+		this.blending = source.blending;
+		this.side = source.side;
+		this.vertexColors = source.vertexColors;
+
+		this.opacity = source.opacity;
+		this.transparent = source.transparent;
+
+		this.blendSrc = source.blendSrc;
+		this.blendDst = source.blendDst;
+		this.blendEquation = source.blendEquation;
+		this.blendSrcAlpha = source.blendSrcAlpha;
+		this.blendDstAlpha = source.blendDstAlpha;
+		this.blendEquationAlpha = source.blendEquationAlpha;
+		this.blendColor.copy( source.blendColor );
+		this.blendAlpha = source.blendAlpha;
+
+		this.depthFunc = source.depthFunc;
+		this.depthTest = source.depthTest;
+		this.depthWrite = source.depthWrite;
+
+		this.stencilWriteMask = source.stencilWriteMask;
+		this.stencilFunc = source.stencilFunc;
+		this.stencilRef = source.stencilRef;
+		this.stencilFuncMask = source.stencilFuncMask;
+		this.stencilFail = source.stencilFail;
+		this.stencilZFail = source.stencilZFail;
+		this.stencilZPass = source.stencilZPass;
+		this.stencilWrite = source.stencilWrite;
+
+		const srcPlanes = source.clippingPlanes;
+		let dstPlanes = null;
+
+		if ( srcPlanes !== null ) {
+
+			const n = srcPlanes.length;
+			dstPlanes = new Array( n );
+
+			for ( let i = 0; i !== n; ++ i ) {
+
+				dstPlanes[ i ] = srcPlanes[ i ].clone();
+
+			}
+
+		}
+
+		this.clippingPlanes = dstPlanes;
+		this.clipIntersection = source.clipIntersection;
+		this.clipShadows = source.clipShadows;
+
+		this.shadowSide = source.shadowSide;
+
+		this.colorWrite = source.colorWrite;
+
+		this.precision = source.precision;
+
+		this.polygonOffset = source.polygonOffset;
+		this.polygonOffsetFactor = source.polygonOffsetFactor;
+		this.polygonOffsetUnits = source.polygonOffsetUnits;
+
+		this.dithering = source.dithering;
+
+		this.alphaTest = source.alphaTest;
+		this.alphaHash = source.alphaHash;
+		this.alphaToCoverage = source.alphaToCoverage;
+		this.premultipliedAlpha = source.premultipliedAlpha;
+		this.forceSinglePass = source.forceSinglePass;
+
+		this.visible = source.visible;
+
+		this.toneMapped = source.toneMapped;
+
+		this.userData = JSON.parse( JSON.stringify( source.userData ) );
+
+		return this;
+
+	}
+
+	dispose() {
+
+		this.dispatchEvent( { type: 'dispose' } );
+
+	}
+
+	set needsUpdate( value ) {
+
+		if ( value === true ) this.version ++;
+
+	}
+
+	onBuild( /* shaderobject, renderer */ ) {
+
+		console.warn( 'Material: onBuild() has been removed.' ); // @deprecated, r166
+
+	}
+
+}
+
+class MeshBasicMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshBasicMaterial = true;
+
+		this.type = 'MeshBasicMaterial';
+
+		this.color = new Color( 0xffffff ); // emissive
+
+		this.map = null;
+
+		this.lightMap = null;
+		this.lightMapIntensity = 1.0;
+
+		this.aoMap = null;
+		this.aoMapIntensity = 1.0;
+
+		this.specularMap = null;
+
+		this.alphaMap = null;
+
+		this.envMap = null;
+		this.envMapRotation = new Euler();
+		this.combine = MultiplyOperation;
+		this.reflectivity = 1;
+		this.refractionRatio = 0.98;
+
+		this.wireframe = false;
+		this.wireframeLinewidth = 1;
+		this.wireframeLinecap = 'round';
+		this.wireframeLinejoin = 'round';
+
+		this.fog = true;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.color.copy( source.color );
+
+		this.map = source.map;
+
+		this.lightMap = source.lightMap;
+		this.lightMapIntensity = source.lightMapIntensity;
+
+		this.aoMap = source.aoMap;
+		this.aoMapIntensity = source.aoMapIntensity;
+
+		this.specularMap = source.specularMap;
+
+		this.alphaMap = source.alphaMap;
+
+		this.envMap = source.envMap;
+		this.envMapRotation.copy( source.envMapRotation );
+		this.combine = source.combine;
+		this.reflectivity = source.reflectivity;
+		this.refractionRatio = source.refractionRatio;
+
+		this.wireframe = source.wireframe;
+		this.wireframeLinewidth = source.wireframeLinewidth;
+		this.wireframeLinecap = source.wireframeLinecap;
+		this.wireframeLinejoin = source.wireframeLinejoin;
+
+		this.fog = source.fog;
+
+		return this;
+
+	}
+
+}
+
+// Fast Half Float Conversions, http://www.fox-toolkit.org/ftp/fasthalffloatconversion.pdf
+
+const _tables = /*@__PURE__*/ _generateTables();
+
+function _generateTables() {
+
+	// float32 to float16 helpers
+
+	const buffer = new ArrayBuffer( 4 );
+	const floatView = new Float32Array( buffer );
+	const uint32View = new Uint32Array( buffer );
+
+	const baseTable = new Uint32Array( 512 );
+	const shiftTable = new Uint32Array( 512 );
+
+	for ( let i = 0; i < 256; ++ i ) {
+
+		const e = i - 127;
+
+		// very small number (0, -0)
+
+		if ( e < - 27 ) {
+
+			baseTable[ i ] = 0x0000;
+			baseTable[ i | 0x100 ] = 0x8000;
+			shiftTable[ i ] = 24;
+			shiftTable[ i | 0x100 ] = 24;
+
+			// small number (denorm)
+
+		} else if ( e < - 14 ) {
+
+			baseTable[ i ] = 0x0400 >> ( - e - 14 );
+			baseTable[ i | 0x100 ] = ( 0x0400 >> ( - e - 14 ) ) | 0x8000;
+			shiftTable[ i ] = - e - 1;
+			shiftTable[ i | 0x100 ] = - e - 1;
+
+			// normal number
+
+		} else if ( e <= 15 ) {
+
+			baseTable[ i ] = ( e + 15 ) << 10;
+			baseTable[ i | 0x100 ] = ( ( e + 15 ) << 10 ) | 0x8000;
+			shiftTable[ i ] = 13;
+			shiftTable[ i | 0x100 ] = 13;
+
+			// large number (Infinity, -Infinity)
+
+		} else if ( e < 128 ) {
+
+			baseTable[ i ] = 0x7c00;
+			baseTable[ i | 0x100 ] = 0xfc00;
+			shiftTable[ i ] = 24;
+			shiftTable[ i | 0x100 ] = 24;
+
+			// stay (NaN, Infinity, -Infinity)
+
+		} else {
+
+			baseTable[ i ] = 0x7c00;
+			baseTable[ i | 0x100 ] = 0xfc00;
+			shiftTable[ i ] = 13;
+			shiftTable[ i | 0x100 ] = 13;
+
+		}
+
+	}
+
+	// float16 to float32 helpers
+
+	const mantissaTable = new Uint32Array( 2048 );
+	const exponentTable = new Uint32Array( 64 );
+	const offsetTable = new Uint32Array( 64 );
+
+	for ( let i = 1; i < 1024; ++ i ) {
+
+		let m = i << 13; // zero pad mantissa bits
+		let e = 0; // zero exponent
+
+		// normalized
+		while ( ( m & 0x00800000 ) === 0 ) {
+
+			m <<= 1;
+			e -= 0x00800000; // decrement exponent
+
+		}
+
+		m &= ~ 0x00800000; // clear leading 1 bit
+		e += 0x38800000; // adjust bias
+
+		mantissaTable[ i ] = m | e;
+
+	}
+
+	for ( let i = 1024; i < 2048; ++ i ) {
+
+		mantissaTable[ i ] = 0x38000000 + ( ( i - 1024 ) << 13 );
+
+	}
+
+	for ( let i = 1; i < 31; ++ i ) {
+
+		exponentTable[ i ] = i << 23;
+
+	}
+
+	exponentTable[ 31 ] = 0x47800000;
+	exponentTable[ 32 ] = 0x80000000;
+
+	for ( let i = 33; i < 63; ++ i ) {
+
+		exponentTable[ i ] = 0x80000000 + ( ( i - 32 ) << 23 );
+
+	}
+
+	exponentTable[ 63 ] = 0xc7800000;
+
+	for ( let i = 1; i < 64; ++ i ) {
+
+		if ( i !== 32 ) {
+
+			offsetTable[ i ] = 1024;
+
+		}
+
+	}
+
+	return {
+		floatView: floatView,
+		uint32View: uint32View,
+		baseTable: baseTable,
+		shiftTable: shiftTable,
+		mantissaTable: mantissaTable,
+		exponentTable: exponentTable,
+		offsetTable: offsetTable
+	};
+
+}
+
+// float32 to float16
+
+function toHalfFloat( val ) {
+
+	if ( Math.abs( val ) > 65504 ) console.warn( 'THREE.DataUtils.toHalfFloat(): Value out of range.' );
+
+	val = clamp( val, - 65504, 65504 );
+
+	_tables.floatView[ 0 ] = val;
+	const f = _tables.uint32View[ 0 ];
+	const e = ( f >> 23 ) & 0x1ff;
+	return _tables.baseTable[ e ] + ( ( f & 0x007fffff ) >> _tables.shiftTable[ e ] );
+
+}
+
+// float16 to float32
+
+function fromHalfFloat( val ) {
+
+	const m = val >> 10;
+	_tables.uint32View[ 0 ] = _tables.mantissaTable[ _tables.offsetTable[ m ] + ( val & 0x3ff ) ] + _tables.exponentTable[ m ];
+	return _tables.floatView[ 0 ];
+
+}
+
+const DataUtils = {
+	toHalfFloat: toHalfFloat,
+	fromHalfFloat: fromHalfFloat,
+};
+
+const _vector$9 = /*@__PURE__*/ new Vector3();
+const _vector2$1 = /*@__PURE__*/ new Vector2();
+
+class BufferAttribute {
+
+	constructor( array, itemSize, normalized = false ) {
+
+		if ( Array.isArray( array ) ) {
+
+			throw new TypeError( 'THREE.BufferAttribute: array should be a Typed Array.' );
+
+		}
+
+		this.isBufferAttribute = true;
+
+		this.name = '';
+
+		this.array = array;
+		this.itemSize = itemSize;
+		this.count = array !== undefined ? array.length / itemSize : 0;
+		this.normalized = normalized;
+
+		this.usage = StaticDrawUsage;
+		this._updateRange = { offset: 0, count: - 1 };
+		this.updateRanges = [];
+		this.gpuType = FloatType;
+
+		this.version = 0;
+
+	}
+
+	onUploadCallback() {}
+
+	set needsUpdate( value ) {
+
+		if ( value === true ) this.version ++;
+
+	}
+
+	get updateRange() {
+
+		warnOnce( 'THREE.BufferAttribute: updateRange() is deprecated and will be removed in r169. Use addUpdateRange() instead.' ); // @deprecated, r159
+		return this._updateRange;
+
+	}
+
+	setUsage( value ) {
+
+		this.usage = value;
+
+		return this;
+
+	}
+
+	addUpdateRange( start, count ) {
+
+		this.updateRanges.push( { start, count } );
+
+	}
+
+	clearUpdateRanges() {
+
+		this.updateRanges.length = 0;
+
+	}
+
+	copy( source ) {
+
+		this.name = source.name;
+		this.array = new source.array.constructor( source.array );
+		this.itemSize = source.itemSize;
+		this.count = source.count;
+		this.normalized = source.normalized;
+
+		this.usage = source.usage;
+		this.gpuType = source.gpuType;
+
+		return this;
+
+	}
+
+	copyAt( index1, attribute, index2 ) {
+
+		index1 *= this.itemSize;
+		index2 *= attribute.itemSize;
+
+		for ( let i = 0, l = this.itemSize; i < l; i ++ ) {
+
+			this.array[ index1 + i ] = attribute.array[ index2 + i ];
+
+		}
+
+		return this;
+
+	}
+
+	copyArray( array ) {
+
+		this.array.set( array );
+
+		return this;
+
+	}
+
+	applyMatrix3( m ) {
+
+		if ( this.itemSize === 2 ) {
+
+			for ( let i = 0, l = this.count; i < l; i ++ ) {
+
+				_vector2$1.fromBufferAttribute( this, i );
+				_vector2$1.applyMatrix3( m );
+
+				this.setXY( i, _vector2$1.x, _vector2$1.y );
+
+			}
+
+		} else if ( this.itemSize === 3 ) {
+
+			for ( let i = 0, l = this.count; i < l; i ++ ) {
+
+				_vector$9.fromBufferAttribute( this, i );
+				_vector$9.applyMatrix3( m );
+
+				this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );
+
+			}
+
+		}
+
+		return this;
+
+	}
+
+	applyMatrix4( m ) {
+
+		for ( let i = 0, l = this.count; i < l; i ++ ) {
+
+			_vector$9.fromBufferAttribute( this, i );
+
+			_vector$9.applyMatrix4( m );
+
+			this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );
+
+		}
+
+		return this;
+
+	}
+
+	applyNormalMatrix( m ) {
+
+		for ( let i = 0, l = this.count; i < l; i ++ ) {
+
+			_vector$9.fromBufferAttribute( this, i );
+
+			_vector$9.applyNormalMatrix( m );
+
+			this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );
+
+		}
+
+		return this;
+
+	}
+
+	transformDirection( m ) {
+
+		for ( let i = 0, l = this.count; i < l; i ++ ) {
+
+			_vector$9.fromBufferAttribute( this, i );
+
+			_vector$9.transformDirection( m );
+
+			this.setXYZ( i, _vector$9.x, _vector$9.y, _vector$9.z );
+
+		}
+
+		return this;
+
+	}
+
+	set( value, offset = 0 ) {
+
+		// Matching BufferAttribute constructor, do not normalize the array.
+		this.array.set( value, offset );
+
+		return this;
+
+	}
+
+	getComponent( index, component ) {
+
+		let value = this.array[ index * this.itemSize + component ];
+
+		if ( this.normalized ) value = denormalize( value, this.array );
+
+		return value;
+
+	}
+
+	setComponent( index, component, value ) {
+
+		if ( this.normalized ) value = normalize( value, this.array );
+
+		this.array[ index * this.itemSize + component ] = value;
+
+		return this;
+
+	}
+
+	getX( index ) {
+
+		let x = this.array[ index * this.itemSize ];
+
+		if ( this.normalized ) x = denormalize( x, this.array );
+
+		return x;
+
+	}
+
+	setX( index, x ) {
+
+		if ( this.normalized ) x = normalize( x, this.array );
+
+		this.array[ index * this.itemSize ] = x;
+
+		return this;
+
+	}
+
+	getY( index ) {
+
+		let y = this.array[ index * this.itemSize + 1 ];
+
+		if ( this.normalized ) y = denormalize( y, this.array );
+
+		return y;
+
+	}
+
+	setY( index, y ) {
+
+		if ( this.normalized ) y = normalize( y, this.array );
+
+		this.array[ index * this.itemSize + 1 ] = y;
+
+		return this;
+
+	}
+
+	getZ( index ) {
+
+		let z = this.array[ index * this.itemSize + 2 ];
+
+		if ( this.normalized ) z = denormalize( z, this.array );
+
+		return z;
+
+	}
+
+	setZ( index, z ) {
+
+		if ( this.normalized ) z = normalize( z, this.array );
+
+		this.array[ index * this.itemSize + 2 ] = z;
+
+		return this;
+
+	}
+
+	getW( index ) {
+
+		let w = this.array[ index * this.itemSize + 3 ];
+
+		if ( this.normalized ) w = denormalize( w, this.array );
+
+		return w;
+
+	}
+
+	setW( index, w ) {
+
+		if ( this.normalized ) w = normalize( w, this.array );
+
+		this.array[ index * this.itemSize + 3 ] = w;
+
+		return this;
+
+	}
+
+	setXY( index, x, y ) {
+
+		index *= this.itemSize;
+
+		if ( this.normalized ) {
+
+			x = normalize( x, this.array );
+			y = normalize( y, this.array );
+
+		}
+
+		this.array[ index + 0 ] = x;
+		this.array[ index + 1 ] = y;
+
+		return this;
+
+	}
+
+	setXYZ( index, x, y, z ) {
+
+		index *= this.itemSize;
+
+		if ( this.normalized ) {
+
+			x = normalize( x, this.array );
+			y = normalize( y, this.array );
+			z = normalize( z, this.array );
+
+		}
+
+		this.array[ index + 0 ] = x;
+		this.array[ index + 1 ] = y;
+		this.array[ index + 2 ] = z;
+
+		return this;
+
+	}
+
+	setXYZW( index, x, y, z, w ) {
+
+		index *= this.itemSize;
+
+		if ( this.normalized ) {
+
+			x = normalize( x, this.array );
+			y = normalize( y, this.array );
+			z = normalize( z, this.array );
+			w = normalize( w, this.array );
+
+		}
+
+		this.array[ index + 0 ] = x;
+		this.array[ index + 1 ] = y;
+		this.array[ index + 2 ] = z;
+		this.array[ index + 3 ] = w;
+
+		return this;
+
+	}
+
+	onUpload( callback ) {
+
+		this.onUploadCallback = callback;
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new this.constructor( this.array, this.itemSize ).copy( this );
+
+	}
+
+	toJSON() {
+
+		const data = {
+			itemSize: this.itemSize,
+			type: this.array.constructor.name,
+			array: Array.from( this.array ),
+			normalized: this.normalized
+		};
+
+		if ( this.name !== '' ) data.name = this.name;
+		if ( this.usage !== StaticDrawUsage ) data.usage = this.usage;
+
+		return data;
+
+	}
+
+}
+
+//
+
+class Int8BufferAttribute extends BufferAttribute {
+
+	constructor( array, itemSize, normalized ) {
+
+		super( new Int8Array( array ), itemSize, normalized );
+
+	}
+
+}
+
+class Uint8BufferAttribute extends BufferAttribute {
+
+	constructor( array, itemSize, normalized ) {
+
+		super( new Uint8Array( array ), itemSize, normalized );
+
+	}
+
+}
+
+class Uint8ClampedBufferAttribute extends BufferAttribute {
+
+	constructor( array, itemSize, normalized ) {
+
+		super( new Uint8ClampedArray( array ), itemSize, normalized );
+
+	}
+
+}
+
+class Int16BufferAttribute extends BufferAttribute {
+
+	constructor( array, itemSize, normalized ) {
+
+		super( new Int16Array( array ), itemSize, normalized );
+
+	}
+
+}
+
+class Uint16BufferAttribute extends BufferAttribute {
+
+	constructor( array, itemSize, normalized ) {
+
+		super( new Uint16Array( array ), itemSize, normalized );
+
+	}
+
+}
+
+class Int32BufferAttribute extends BufferAttribute {
+
+	constructor( array, itemSize, normalized ) {
+
+		super( new Int32Array( array ), itemSize, normalized );
+
+	}
+
+}
+
+class Uint32BufferAttribute extends BufferAttribute {
+
+	constructor( array, itemSize, normalized ) {
+
+		super( new Uint32Array( array ), itemSize, normalized );
+
+	}
+
+}
+
+class Float16BufferAttribute extends BufferAttribute {
+
+	constructor( array, itemSize, normalized ) {
+
+		super( new Uint16Array( array ), itemSize, normalized );
+
+		this.isFloat16BufferAttribute = true;
+
+	}
+
+	getX( index ) {
+
+		let x = fromHalfFloat( this.array[ index * this.itemSize ] );
+
+		if ( this.normalized ) x = denormalize( x, this.array );
+
+		return x;
+
+	}
+
+	setX( index, x ) {
+
+		if ( this.normalized ) x = normalize( x, this.array );
+
+		this.array[ index * this.itemSize ] = toHalfFloat( x );
+
+		return this;
+
+	}
+
+	getY( index ) {
+
+		let y = fromHalfFloat( this.array[ index * this.itemSize + 1 ] );
+
+		if ( this.normalized ) y = denormalize( y, this.array );
+
+		return y;
+
+	}
+
+	setY( index, y ) {
+
+		if ( this.normalized ) y = normalize( y, this.array );
+
+		this.array[ index * this.itemSize + 1 ] = toHalfFloat( y );
+
+		return this;
+
+	}
+
+	getZ( index ) {
+
+		let z = fromHalfFloat( this.array[ index * this.itemSize + 2 ] );
+
+		if ( this.normalized ) z = denormalize( z, this.array );
+
+		return z;
+
+	}
+
+	setZ( index, z ) {
+
+		if ( this.normalized ) z = normalize( z, this.array );
+
+		this.array[ index * this.itemSize + 2 ] = toHalfFloat( z );
+
+		return this;
+
+	}
+
+	getW( index ) {
+
+		let w = fromHalfFloat( this.array[ index * this.itemSize + 3 ] );
+
+		if ( this.normalized ) w = denormalize( w, this.array );
+
+		return w;
+
+	}
+
+	setW( index, w ) {
+
+		if ( this.normalized ) w = normalize( w, this.array );
+
+		this.array[ index * this.itemSize + 3 ] = toHalfFloat( w );
+
+		return this;
+
+	}
+
+	setXY( index, x, y ) {
+
+		index *= this.itemSize;
+
+		if ( this.normalized ) {
+
+			x = normalize( x, this.array );
+			y = normalize( y, this.array );
+
+		}
+
+		this.array[ index + 0 ] = toHalfFloat( x );
+		this.array[ index + 1 ] = toHalfFloat( y );
+
+		return this;
+
+	}
+
+	setXYZ( index, x, y, z ) {
+
+		index *= this.itemSize;
+
+		if ( this.normalized ) {
+
+			x = normalize( x, this.array );
+			y = normalize( y, this.array );
+			z = normalize( z, this.array );
+
+		}
+
+		this.array[ index + 0 ] = toHalfFloat( x );
+		this.array[ index + 1 ] = toHalfFloat( y );
+		this.array[ index + 2 ] = toHalfFloat( z );
+
+		return this;
+
+	}
+
+	setXYZW( index, x, y, z, w ) {
+
+		index *= this.itemSize;
+
+		if ( this.normalized ) {
+
+			x = normalize( x, this.array );
+			y = normalize( y, this.array );
+			z = normalize( z, this.array );
+			w = normalize( w, this.array );
+
+		}
+
+		this.array[ index + 0 ] = toHalfFloat( x );
+		this.array[ index + 1 ] = toHalfFloat( y );
+		this.array[ index + 2 ] = toHalfFloat( z );
+		this.array[ index + 3 ] = toHalfFloat( w );
+
+		return this;
+
+	}
+
+}
+
+
+class Float32BufferAttribute extends BufferAttribute {
+
+	constructor( array, itemSize, normalized ) {
+
+		super( new Float32Array( array ), itemSize, normalized );
+
+	}
+
+}
+
+let _id$2 = 0;
+
+const _m1$2 = /*@__PURE__*/ new Matrix4();
+const _obj = /*@__PURE__*/ new Object3D();
+const _offset = /*@__PURE__*/ new Vector3();
+const _box$2 = /*@__PURE__*/ new Box3();
+const _boxMorphTargets = /*@__PURE__*/ new Box3();
+const _vector$8 = /*@__PURE__*/ new Vector3();
+
+class BufferGeometry extends EventDispatcher {
+
+	constructor() {
+
+		super();
+
+		this.isBufferGeometry = true;
+
+		Object.defineProperty( this, 'id', { value: _id$2 ++ } );
+
+		this.uuid = generateUUID();
+
+		this.name = '';
+		this.type = 'BufferGeometry';
+
+		this.index = null;
+		this.attributes = {};
+
+		this.morphAttributes = {};
+		this.morphTargetsRelative = false;
+
+		this.groups = [];
+
+		this.boundingBox = null;
+		this.boundingSphere = null;
+
+		this.drawRange = { start: 0, count: Infinity };
+
+		this.userData = {};
+
+	}
+
+	getIndex() {
+
+		return this.index;
+
+	}
+
+	setIndex( index ) {
+
+		if ( Array.isArray( index ) ) {
+
+			this.index = new ( arrayNeedsUint32( index ) ? Uint32BufferAttribute : Uint16BufferAttribute )( index, 1 );
+
+		} else {
+
+			this.index = index;
+
+		}
+
+		return this;
+
+	}
+
+	getAttribute( name ) {
+
+		return this.attributes[ name ];
+
+	}
+
+	setAttribute( name, attribute ) {
+
+		this.attributes[ name ] = attribute;
+
+		return this;
+
+	}
+
+	deleteAttribute( name ) {
+
+		delete this.attributes[ name ];
+
+		return this;
+
+	}
+
+	hasAttribute( name ) {
+
+		return this.attributes[ name ] !== undefined;
+
+	}
+
+	addGroup( start, count, materialIndex = 0 ) {
+
+		this.groups.push( {
+
+			start: start,
+			count: count,
+			materialIndex: materialIndex
+
+		} );
+
+	}
+
+	clearGroups() {
+
+		this.groups = [];
+
+	}
+
+	setDrawRange( start, count ) {
+
+		this.drawRange.start = start;
+		this.drawRange.count = count;
+
+	}
+
+	applyMatrix4( matrix ) {
+
+		const position = this.attributes.position;
+
+		if ( position !== undefined ) {
+
+			position.applyMatrix4( matrix );
+
+			position.needsUpdate = true;
+
+		}
+
+		const normal = this.attributes.normal;
+
+		if ( normal !== undefined ) {
+
+			const normalMatrix = new Matrix3().getNormalMatrix( matrix );
+
+			normal.applyNormalMatrix( normalMatrix );
+
+			normal.needsUpdate = true;
+
+		}
+
+		const tangent = this.attributes.tangent;
+
+		if ( tangent !== undefined ) {
+
+			tangent.transformDirection( matrix );
+
+			tangent.needsUpdate = true;
+
+		}
+
+		if ( this.boundingBox !== null ) {
+
+			this.computeBoundingBox();
+
+		}
+
+		if ( this.boundingSphere !== null ) {
+
+			this.computeBoundingSphere();
+
+		}
+
+		return this;
+
+	}
+
+	applyQuaternion( q ) {
+
+		_m1$2.makeRotationFromQuaternion( q );
+
+		this.applyMatrix4( _m1$2 );
+
+		return this;
+
+	}
+
+	rotateX( angle ) {
+
+		// rotate geometry around world x-axis
+
+		_m1$2.makeRotationX( angle );
+
+		this.applyMatrix4( _m1$2 );
+
+		return this;
+
+	}
+
+	rotateY( angle ) {
+
+		// rotate geometry around world y-axis
+
+		_m1$2.makeRotationY( angle );
+
+		this.applyMatrix4( _m1$2 );
+
+		return this;
+
+	}
+
+	rotateZ( angle ) {
+
+		// rotate geometry around world z-axis
+
+		_m1$2.makeRotationZ( angle );
+
+		this.applyMatrix4( _m1$2 );
+
+		return this;
+
+	}
+
+	translate( x, y, z ) {
+
+		// translate geometry
+
+		_m1$2.makeTranslation( x, y, z );
+
+		this.applyMatrix4( _m1$2 );
+
+		return this;
+
+	}
+
+	scale( x, y, z ) {
+
+		// scale geometry
+
+		_m1$2.makeScale( x, y, z );
+
+		this.applyMatrix4( _m1$2 );
+
+		return this;
+
+	}
+
+	lookAt( vector ) {
+
+		_obj.lookAt( vector );
+
+		_obj.updateMatrix();
+
+		this.applyMatrix4( _obj.matrix );
+
+		return this;
+
+	}
+
+	center() {
+
+		this.computeBoundingBox();
+
+		this.boundingBox.getCenter( _offset ).negate();
+
+		this.translate( _offset.x, _offset.y, _offset.z );
+
+		return this;
+
+	}
+
+	setFromPoints( points ) {
+
+		const position = [];
+
+		for ( let i = 0, l = points.length; i < l; i ++ ) {
+
+			const point = points[ i ];
+			position.push( point.x, point.y, point.z || 0 );
+
+		}
+
+		this.setAttribute( 'position', new Float32BufferAttribute( position, 3 ) );
+
+		return this;
+
+	}
+
+	computeBoundingBox() {
+
+		if ( this.boundingBox === null ) {
+
+			this.boundingBox = new Box3();
+
+		}
+
+		const position = this.attributes.position;
+		const morphAttributesPosition = this.morphAttributes.position;
+
+		if ( position && position.isGLBufferAttribute ) {
+
+			console.error( 'THREE.BufferGeometry.computeBoundingBox(): GLBufferAttribute requires a manual bounding box.', this );
+
+			this.boundingBox.set(
+				new Vector3( - Infinity, - Infinity, - Infinity ),
+				new Vector3( + Infinity, + Infinity, + Infinity )
+			);
+
+			return;
+
+		}
+
+		if ( position !== undefined ) {
+
+			this.boundingBox.setFromBufferAttribute( position );
+
+			// process morph attributes if present
+
+			if ( morphAttributesPosition ) {
+
+				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
+
+					const morphAttribute = morphAttributesPosition[ i ];
+					_box$2.setFromBufferAttribute( morphAttribute );
+
+					if ( this.morphTargetsRelative ) {
+
+						_vector$8.addVectors( this.boundingBox.min, _box$2.min );
+						this.boundingBox.expandByPoint( _vector$8 );
+
+						_vector$8.addVectors( this.boundingBox.max, _box$2.max );
+						this.boundingBox.expandByPoint( _vector$8 );
+
+					} else {
+
+						this.boundingBox.expandByPoint( _box$2.min );
+						this.boundingBox.expandByPoint( _box$2.max );
+
+					}
+
+				}
+
+			}
+
+		} else {
+
+			this.boundingBox.makeEmpty();
+
+		}
+
+		if ( isNaN( this.boundingBox.min.x ) || isNaN( this.boundingBox.min.y ) || isNaN( this.boundingBox.min.z ) ) {
+
+			console.error( 'THREE.BufferGeometry.computeBoundingBox(): Computed min/max have NaN values. The "position" attribute is likely to have NaN values.', this );
+
+		}
+
+	}
+
+	computeBoundingSphere() {
+
+		if ( this.boundingSphere === null ) {
+
+			this.boundingSphere = new Sphere();
+
+		}
+
+		const position = this.attributes.position;
+		const morphAttributesPosition = this.morphAttributes.position;
+
+		if ( position && position.isGLBufferAttribute ) {
+
+			console.error( 'THREE.BufferGeometry.computeBoundingSphere(): GLBufferAttribute requires a manual bounding sphere.', this );
+
+			this.boundingSphere.set( new Vector3(), Infinity );
+
+			return;
+
+		}
+
+		if ( position ) {
+
+			// first, find the center of the bounding sphere
+
+			const center = this.boundingSphere.center;
+
+			_box$2.setFromBufferAttribute( position );
+
+			// process morph attributes if present
+
+			if ( morphAttributesPosition ) {
+
+				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
+
+					const morphAttribute = morphAttributesPosition[ i ];
+					_boxMorphTargets.setFromBufferAttribute( morphAttribute );
+
+					if ( this.morphTargetsRelative ) {
+
+						_vector$8.addVectors( _box$2.min, _boxMorphTargets.min );
+						_box$2.expandByPoint( _vector$8 );
+
+						_vector$8.addVectors( _box$2.max, _boxMorphTargets.max );
+						_box$2.expandByPoint( _vector$8 );
+
+					} else {
+
+						_box$2.expandByPoint( _boxMorphTargets.min );
+						_box$2.expandByPoint( _boxMorphTargets.max );
+
+					}
+
+				}
+
+			}
+
+			_box$2.getCenter( center );
+
+			// second, try to find a boundingSphere with a radius smaller than the
+			// boundingSphere of the boundingBox: sqrt(3) smaller in the best case
+
+			let maxRadiusSq = 0;
+
+			for ( let i = 0, il = position.count; i < il; i ++ ) {
+
+				_vector$8.fromBufferAttribute( position, i );
+
+				maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$8 ) );
+
+			}
+
+			// process morph attributes if present
+
+			if ( morphAttributesPosition ) {
+
+				for ( let i = 0, il = morphAttributesPosition.length; i < il; i ++ ) {
+
+					const morphAttribute = morphAttributesPosition[ i ];
+					const morphTargetsRelative = this.morphTargetsRelative;
+
+					for ( let j = 0, jl = morphAttribute.count; j < jl; j ++ ) {
+
+						_vector$8.fromBufferAttribute( morphAttribute, j );
+
+						if ( morphTargetsRelative ) {
+
+							_offset.fromBufferAttribute( position, j );
+							_vector$8.add( _offset );
+
+						}
+
+						maxRadiusSq = Math.max( maxRadiusSq, center.distanceToSquared( _vector$8 ) );
+
+					}
+
+				}
+
+			}
+
+			this.boundingSphere.radius = Math.sqrt( maxRadiusSq );
+
+			if ( isNaN( this.boundingSphere.radius ) ) {
+
+				console.error( 'THREE.BufferGeometry.computeBoundingSphere(): Computed radius is NaN. The "position" attribute is likely to have NaN values.', this );
+
+			}
+
+		}
+
+	}
+
+	computeTangents() {
+
+		const index = this.index;
+		const attributes = this.attributes;
+
+		// based on http://www.terathon.com/code/tangent.html
+		// (per vertex tangents)
+
+		if ( index === null ||
+			 attributes.position === undefined ||
+			 attributes.normal === undefined ||
+			 attributes.uv === undefined ) {
+
+			console.error( 'THREE.BufferGeometry: .computeTangents() failed. Missing required attributes (index, position, normal or uv)' );
+			return;
+
+		}
+
+		const positionAttribute = attributes.position;
+		const normalAttribute = attributes.normal;
+		const uvAttribute = attributes.uv;
+
+		if ( this.hasAttribute( 'tangent' ) === false ) {
+
+			this.setAttribute( 'tangent', new BufferAttribute( new Float32Array( 4 * positionAttribute.count ), 4 ) );
+
+		}
+
+		const tangentAttribute = this.getAttribute( 'tangent' );
+
+		const tan1 = [], tan2 = [];
+
+		for ( let i = 0; i < positionAttribute.count; i ++ ) {
+
+			tan1[ i ] = new Vector3();
+			tan2[ i ] = new Vector3();
+
+		}
+
+		const vA = new Vector3(),
+			vB = new Vector3(),
+			vC = new Vector3(),
+
+			uvA = new Vector2(),
+			uvB = new Vector2(),
+			uvC = new Vector2(),
+
+			sdir = new Vector3(),
+			tdir = new Vector3();
+
+		function handleTriangle( a, b, c ) {
+
+			vA.fromBufferAttribute( positionAttribute, a );
+			vB.fromBufferAttribute( positionAttribute, b );
+			vC.fromBufferAttribute( positionAttribute, c );
+
+			uvA.fromBufferAttribute( uvAttribute, a );
+			uvB.fromBufferAttribute( uvAttribute, b );
+			uvC.fromBufferAttribute( uvAttribute, c );
+
+			vB.sub( vA );
+			vC.sub( vA );
+
+			uvB.sub( uvA );
+			uvC.sub( uvA );
+
+			const r = 1.0 / ( uvB.x * uvC.y - uvC.x * uvB.y );
+
+			// silently ignore degenerate uv triangles having coincident or colinear vertices
+
+			if ( ! isFinite( r ) ) return;
+
+			sdir.copy( vB ).multiplyScalar( uvC.y ).addScaledVector( vC, - uvB.y ).multiplyScalar( r );
+			tdir.copy( vC ).multiplyScalar( uvB.x ).addScaledVector( vB, - uvC.x ).multiplyScalar( r );
+
+			tan1[ a ].add( sdir );
+			tan1[ b ].add( sdir );
+			tan1[ c ].add( sdir );
+
+			tan2[ a ].add( tdir );
+			tan2[ b ].add( tdir );
+			tan2[ c ].add( tdir );
+
+		}
+
+		let groups = this.groups;
+
+		if ( groups.length === 0 ) {
+
+			groups = [ {
+				start: 0,
+				count: index.count
+			} ];
+
+		}
+
+		for ( let i = 0, il = groups.length; i < il; ++ i ) {
+
+			const group = groups[ i ];
+
+			const start = group.start;
+			const count = group.count;
+
+			for ( let j = start, jl = start + count; j < jl; j += 3 ) {
+
+				handleTriangle(
+					index.getX( j + 0 ),
+					index.getX( j + 1 ),
+					index.getX( j + 2 )
+				);
+
+			}
+
+		}
+
+		const tmp = new Vector3(), tmp2 = new Vector3();
+		const n = new Vector3(), n2 = new Vector3();
+
+		function handleVertex( v ) {
+
+			n.fromBufferAttribute( normalAttribute, v );
+			n2.copy( n );
+
+			const t = tan1[ v ];
+
+			// Gram-Schmidt orthogonalize
+
+			tmp.copy( t );
+			tmp.sub( n.multiplyScalar( n.dot( t ) ) ).normalize();
+
+			// Calculate handedness
+
+			tmp2.crossVectors( n2, t );
+			const test = tmp2.dot( tan2[ v ] );
+			const w = ( test < 0.0 ) ? - 1.0 : 1.0;
+
+			tangentAttribute.setXYZW( v, tmp.x, tmp.y, tmp.z, w );
+
+		}
+
+		for ( let i = 0, il = groups.length; i < il; ++ i ) {
+
+			const group = groups[ i ];
+
+			const start = group.start;
+			const count = group.count;
+
+			for ( let j = start, jl = start + count; j < jl; j += 3 ) {
+
+				handleVertex( index.getX( j + 0 ) );
+				handleVertex( index.getX( j + 1 ) );
+				handleVertex( index.getX( j + 2 ) );
+
+			}
+
+		}
+
+	}
+
+	computeVertexNormals() {
+
+		const index = this.index;
+		const positionAttribute = this.getAttribute( 'position' );
+
+		if ( positionAttribute !== undefined ) {
+
+			let normalAttribute = this.getAttribute( 'normal' );
+
+			if ( normalAttribute === undefined ) {
+
+				normalAttribute = new BufferAttribute( new Float32Array( positionAttribute.count * 3 ), 3 );
+				this.setAttribute( 'normal', normalAttribute );
+
+			} else {
+
+				// reset existing normals to zero
+
+				for ( let i = 0, il = normalAttribute.count; i < il; i ++ ) {
+
+					normalAttribute.setXYZ( i, 0, 0, 0 );
+
+				}
+
+			}
+
+			const pA = new Vector3(), pB = new Vector3(), pC = new Vector3();
+			const nA = new Vector3(), nB = new Vector3(), nC = new Vector3();
+			const cb = new Vector3(), ab = new Vector3();
+
+			// indexed elements
+
+			if ( index ) {
+
+				for ( let i = 0, il = index.count; i < il; i += 3 ) {
+
+					const vA = index.getX( i + 0 );
+					const vB = index.getX( i + 1 );
+					const vC = index.getX( i + 2 );
+
+					pA.fromBufferAttribute( positionAttribute, vA );
+					pB.fromBufferAttribute( positionAttribute, vB );
+					pC.fromBufferAttribute( positionAttribute, vC );
+
+					cb.subVectors( pC, pB );
+					ab.subVectors( pA, pB );
+					cb.cross( ab );
+
+					nA.fromBufferAttribute( normalAttribute, vA );
+					nB.fromBufferAttribute( normalAttribute, vB );
+					nC.fromBufferAttribute( normalAttribute, vC );
+
+					nA.add( cb );
+					nB.add( cb );
+					nC.add( cb );
+
+					normalAttribute.setXYZ( vA, nA.x, nA.y, nA.z );
+					normalAttribute.setXYZ( vB, nB.x, nB.y, nB.z );
+					normalAttribute.setXYZ( vC, nC.x, nC.y, nC.z );
+
+				}
+
+			} else {
+
+				// non-indexed elements (unconnected triangle soup)
+
+				for ( let i = 0, il = positionAttribute.count; i < il; i += 3 ) {
+
+					pA.fromBufferAttribute( positionAttribute, i + 0 );
+					pB.fromBufferAttribute( positionAttribute, i + 1 );
+					pC.fromBufferAttribute( positionAttribute, i + 2 );
+
+					cb.subVectors( pC, pB );
+					ab.subVectors( pA, pB );
+					cb.cross( ab );
+
+					normalAttribute.setXYZ( i + 0, cb.x, cb.y, cb.z );
+					normalAttribute.setXYZ( i + 1, cb.x, cb.y, cb.z );
+					normalAttribute.setXYZ( i + 2, cb.x, cb.y, cb.z );
+
+				}
+
+			}
+
+			this.normalizeNormals();
+
+			normalAttribute.needsUpdate = true;
+
+		}
+
+	}
+
+	normalizeNormals() {
+
+		const normals = this.attributes.normal;
+
+		for ( let i = 0, il = normals.count; i < il; i ++ ) {
+
+			_vector$8.fromBufferAttribute( normals, i );
+
+			_vector$8.normalize();
+
+			normals.setXYZ( i, _vector$8.x, _vector$8.y, _vector$8.z );
+
+		}
+
+	}
+
+	toNonIndexed() {
+
+		function convertBufferAttribute( attribute, indices ) {
+
+			const array = attribute.array;
+			const itemSize = attribute.itemSize;
+			const normalized = attribute.normalized;
+
+			const array2 = new array.constructor( indices.length * itemSize );
+
+			let index = 0, index2 = 0;
+
+			for ( let i = 0, l = indices.length; i < l; i ++ ) {
+
+				if ( attribute.isInterleavedBufferAttribute ) {
+
+					index = indices[ i ] * attribute.data.stride + attribute.offset;
+
+				} else {
+
+					index = indices[ i ] * itemSize;
+
+				}
+
+				for ( let j = 0; j < itemSize; j ++ ) {
+
+					array2[ index2 ++ ] = array[ index ++ ];
+
+				}
+
+			}
+
+			return new BufferAttribute( array2, itemSize, normalized );
+
+		}
+
+		//
+
+		if ( this.index === null ) {
+
+			console.warn( 'THREE.BufferGeometry.toNonIndexed(): BufferGeometry is already non-indexed.' );
+			return this;
+
+		}
+
+		const geometry2 = new BufferGeometry();
+
+		const indices = this.index.array;
+		const attributes = this.attributes;
+
+		// attributes
+
+		for ( const name in attributes ) {
+
+			const attribute = attributes[ name ];
+
+			const newAttribute = convertBufferAttribute( attribute, indices );
+
+			geometry2.setAttribute( name, newAttribute );
+
+		}
+
+		// morph attributes
+
+		const morphAttributes = this.morphAttributes;
+
+		for ( const name in morphAttributes ) {
+
+			const morphArray = [];
+			const morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes
+
+			for ( let i = 0, il = morphAttribute.length; i < il; i ++ ) {
+
+				const attribute = morphAttribute[ i ];
+
+				const newAttribute = convertBufferAttribute( attribute, indices );
+
+				morphArray.push( newAttribute );
+
+			}
+
+			geometry2.morphAttributes[ name ] = morphArray;
+
+		}
+
+		geometry2.morphTargetsRelative = this.morphTargetsRelative;
+
+		// groups
+
+		const groups = this.groups;
+
+		for ( let i = 0, l = groups.length; i < l; i ++ ) {
+
+			const group = groups[ i ];
+			geometry2.addGroup( group.start, group.count, group.materialIndex );
+
+		}
+
+		return geometry2;
+
+	}
+
+	toJSON() {
+
+		const data = {
+			metadata: {
+				version: 4.6,
+				type: 'BufferGeometry',
+				generator: 'BufferGeometry.toJSON'
+			}
+		};
+
+		// standard BufferGeometry serialization
+
+		data.uuid = this.uuid;
+		data.type = this.type;
+		if ( this.name !== '' ) data.name = this.name;
+		if ( Object.keys( this.userData ).length > 0 ) data.userData = this.userData;
+
+		if ( this.parameters !== undefined ) {
+
+			const parameters = this.parameters;
+
+			for ( const key in parameters ) {
+
+				if ( parameters[ key ] !== undefined ) data[ key ] = parameters[ key ];
+
+			}
+
+			return data;
+
+		}
+
+		// for simplicity the code assumes attributes are not shared across geometries, see #15811
+
+		data.data = { attributes: {} };
+
+		const index = this.index;
+
+		if ( index !== null ) {
+
+			data.data.index = {
+				type: index.array.constructor.name,
+				array: Array.prototype.slice.call( index.array )
+			};
+
+		}
+
+		const attributes = this.attributes;
+
+		for ( const key in attributes ) {
+
+			const attribute = attributes[ key ];
+
+			data.data.attributes[ key ] = attribute.toJSON( data.data );
+
+		}
+
+		const morphAttributes = {};
+		let hasMorphAttributes = false;
+
+		for ( const key in this.morphAttributes ) {
+
+			const attributeArray = this.morphAttributes[ key ];
+
+			const array = [];
+
+			for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {
+
+				const attribute = attributeArray[ i ];
+
+				array.push( attribute.toJSON( data.data ) );
+
+			}
+
+			if ( array.length > 0 ) {
+
+				morphAttributes[ key ] = array;
+
+				hasMorphAttributes = true;
+
+			}
+
+		}
+
+		if ( hasMorphAttributes ) {
+
+			data.data.morphAttributes = morphAttributes;
+			data.data.morphTargetsRelative = this.morphTargetsRelative;
+
+		}
+
+		const groups = this.groups;
+
+		if ( groups.length > 0 ) {
+
+			data.data.groups = JSON.parse( JSON.stringify( groups ) );
+
+		}
+
+		const boundingSphere = this.boundingSphere;
+
+		if ( boundingSphere !== null ) {
+
+			data.data.boundingSphere = {
+				center: boundingSphere.center.toArray(),
+				radius: boundingSphere.radius
+			};
+
+		}
+
+		return data;
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+	copy( source ) {
+
+		// reset
+
+		this.index = null;
+		this.attributes = {};
+		this.morphAttributes = {};
+		this.groups = [];
+		this.boundingBox = null;
+		this.boundingSphere = null;
+
+		// used for storing cloned, shared data
+
+		const data = {};
+
+		// name
+
+		this.name = source.name;
+
+		// index
+
+		const index = source.index;
+
+		if ( index !== null ) {
+
+			this.setIndex( index.clone( data ) );
+
+		}
+
+		// attributes
+
+		const attributes = source.attributes;
+
+		for ( const name in attributes ) {
+
+			const attribute = attributes[ name ];
+			this.setAttribute( name, attribute.clone( data ) );
+
+		}
+
+		// morph attributes
+
+		const morphAttributes = source.morphAttributes;
+
+		for ( const name in morphAttributes ) {
+
+			const array = [];
+			const morphAttribute = morphAttributes[ name ]; // morphAttribute: array of Float32BufferAttributes
+
+			for ( let i = 0, l = morphAttribute.length; i < l; i ++ ) {
+
+				array.push( morphAttribute[ i ].clone( data ) );
+
+			}
+
+			this.morphAttributes[ name ] = array;
+
+		}
+
+		this.morphTargetsRelative = source.morphTargetsRelative;
+
+		// groups
+
+		const groups = source.groups;
+
+		for ( let i = 0, l = groups.length; i < l; i ++ ) {
+
+			const group = groups[ i ];
+			this.addGroup( group.start, group.count, group.materialIndex );
+
+		}
+
+		// bounding box
+
+		const boundingBox = source.boundingBox;
+
+		if ( boundingBox !== null ) {
+
+			this.boundingBox = boundingBox.clone();
+
+		}
+
+		// bounding sphere
+
+		const boundingSphere = source.boundingSphere;
+
+		if ( boundingSphere !== null ) {
+
+			this.boundingSphere = boundingSphere.clone();
+
+		}
+
+		// draw range
+
+		this.drawRange.start = source.drawRange.start;
+		this.drawRange.count = source.drawRange.count;
+
+		// user data
+
+		this.userData = source.userData;
+
+		return this;
+
+	}
+
+	dispose() {
+
+		this.dispatchEvent( { type: 'dispose' } );
+
+	}
+
+}
+
+const _inverseMatrix$3 = /*@__PURE__*/ new Matrix4();
+const _ray$3 = /*@__PURE__*/ new Ray();
+const _sphere$6 = /*@__PURE__*/ new Sphere();
+const _sphereHitAt = /*@__PURE__*/ new Vector3();
+
+const _vA$1 = /*@__PURE__*/ new Vector3();
+const _vB$1 = /*@__PURE__*/ new Vector3();
+const _vC$1 = /*@__PURE__*/ new Vector3();
+
+const _tempA = /*@__PURE__*/ new Vector3();
+const _morphA = /*@__PURE__*/ new Vector3();
+
+const _uvA$1 = /*@__PURE__*/ new Vector2();
+const _uvB$1 = /*@__PURE__*/ new Vector2();
+const _uvC$1 = /*@__PURE__*/ new Vector2();
+
+const _normalA = /*@__PURE__*/ new Vector3();
+const _normalB = /*@__PURE__*/ new Vector3();
+const _normalC = /*@__PURE__*/ new Vector3();
+
+const _intersectionPoint = /*@__PURE__*/ new Vector3();
+const _intersectionPointWorld = /*@__PURE__*/ new Vector3();
+
+class Mesh extends Object3D {
+
+	constructor( geometry = new BufferGeometry(), material = new MeshBasicMaterial() ) {
+
+		super();
+
+		this.isMesh = true;
+
+		this.type = 'Mesh';
+
+		this.geometry = geometry;
+		this.material = material;
+
+		this.updateMorphTargets();
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		if ( source.morphTargetInfluences !== undefined ) {
+
+			this.morphTargetInfluences = source.morphTargetInfluences.slice();
+
+		}
+
+		if ( source.morphTargetDictionary !== undefined ) {
+
+			this.morphTargetDictionary = Object.assign( {}, source.morphTargetDictionary );
+
+		}
+
+		this.material = Array.isArray( source.material ) ? source.material.slice() : source.material;
+		this.geometry = source.geometry;
+
+		return this;
+
+	}
+
+	updateMorphTargets() {
+
+		const geometry = this.geometry;
+
+		const morphAttributes = geometry.morphAttributes;
+		const keys = Object.keys( morphAttributes );
+
+		if ( keys.length > 0 ) {
+
+			const morphAttribute = morphAttributes[ keys[ 0 ] ];
+
+			if ( morphAttribute !== undefined ) {
+
+				this.morphTargetInfluences = [];
+				this.morphTargetDictionary = {};
+
+				for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
+
+					const name = morphAttribute[ m ].name || String( m );
+
+					this.morphTargetInfluences.push( 0 );
+					this.morphTargetDictionary[ name ] = m;
+
+				}
+
+			}
+
+		}
+
+	}
+
+	getVertexPosition( index, target ) {
+
+		const geometry = this.geometry;
+		const position = geometry.attributes.position;
+		const morphPosition = geometry.morphAttributes.position;
+		const morphTargetsRelative = geometry.morphTargetsRelative;
+
+		target.fromBufferAttribute( position, index );
+
+		const morphInfluences = this.morphTargetInfluences;
+
+		if ( morphPosition && morphInfluences ) {
+
+			_morphA.set( 0, 0, 0 );
+
+			for ( let i = 0, il = morphPosition.length; i < il; i ++ ) {
+
+				const influence = morphInfluences[ i ];
+				const morphAttribute = morphPosition[ i ];
+
+				if ( influence === 0 ) continue;
+
+				_tempA.fromBufferAttribute( morphAttribute, index );
+
+				if ( morphTargetsRelative ) {
+
+					_morphA.addScaledVector( _tempA, influence );
+
+				} else {
+
+					_morphA.addScaledVector( _tempA.sub( target ), influence );
+
+				}
+
+			}
+
+			target.add( _morphA );
+
+		}
+
+		return target;
+
+	}
+
+	raycast( raycaster, intersects ) {
+
+		const geometry = this.geometry;
+		const material = this.material;
+		const matrixWorld = this.matrixWorld;
+
+		if ( material === undefined ) return;
+
+		// test with bounding sphere in world space
+
+		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
+
+		_sphere$6.copy( geometry.boundingSphere );
+		_sphere$6.applyMatrix4( matrixWorld );
+
+		// check distance from ray origin to bounding sphere
+
+		_ray$3.copy( raycaster.ray ).recast( raycaster.near );
+
+		if ( _sphere$6.containsPoint( _ray$3.origin ) === false ) {
+
+			if ( _ray$3.intersectSphere( _sphere$6, _sphereHitAt ) === null ) return;
+
+			if ( _ray$3.origin.distanceToSquared( _sphereHitAt ) > ( raycaster.far - raycaster.near ) ** 2 ) return;
+
+		}
+
+		// convert ray to local space of mesh
+
+		_inverseMatrix$3.copy( matrixWorld ).invert();
+		_ray$3.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$3 );
+
+		// test with bounding box in local space
+
+		if ( geometry.boundingBox !== null ) {
+
+			if ( _ray$3.intersectsBox( geometry.boundingBox ) === false ) return;
+
+		}
+
+		// test for intersections with geometry
+
+		this._computeIntersections( raycaster, intersects, _ray$3 );
+
+	}
+
+	_computeIntersections( raycaster, intersects, rayLocalSpace ) {
+
+		let intersection;
+
+		const geometry = this.geometry;
+		const material = this.material;
+
+		const index = geometry.index;
+		const position = geometry.attributes.position;
+		const uv = geometry.attributes.uv;
+		const uv1 = geometry.attributes.uv1;
+		const normal = geometry.attributes.normal;
+		const groups = geometry.groups;
+		const drawRange = geometry.drawRange;
+
+		if ( index !== null ) {
+
+			// indexed buffer geometry
+
+			if ( Array.isArray( material ) ) {
+
+				for ( let i = 0, il = groups.length; i < il; i ++ ) {
+
+					const group = groups[ i ];
+					const groupMaterial = material[ group.materialIndex ];
+
+					const start = Math.max( group.start, drawRange.start );
+					const end = Math.min( index.count, Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) ) );
+
+					for ( let j = start, jl = end; j < jl; j += 3 ) {
+
+						const a = index.getX( j );
+						const b = index.getX( j + 1 );
+						const c = index.getX( j + 2 );
+
+						intersection = checkGeometryIntersection( this, groupMaterial, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c );
+
+						if ( intersection ) {
+
+							intersection.faceIndex = Math.floor( j / 3 ); // triangle number in indexed buffer semantics
+							intersection.face.materialIndex = group.materialIndex;
+							intersects.push( intersection );
+
+						}
+
+					}
+
+				}
+
+			} else {
+
+				const start = Math.max( 0, drawRange.start );
+				const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );
+
+				for ( let i = start, il = end; i < il; i += 3 ) {
+
+					const a = index.getX( i );
+					const b = index.getX( i + 1 );
+					const c = index.getX( i + 2 );
+
+					intersection = checkGeometryIntersection( this, material, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c );
+
+					if ( intersection ) {
+
+						intersection.faceIndex = Math.floor( i / 3 ); // triangle number in indexed buffer semantics
+						intersects.push( intersection );
+
+					}
+
+				}
+
+			}
+
+		} else if ( position !== undefined ) {
+
+			// non-indexed buffer geometry
+
+			if ( Array.isArray( material ) ) {
+
+				for ( let i = 0, il = groups.length; i < il; i ++ ) {
+
+					const group = groups[ i ];
+					const groupMaterial = material[ group.materialIndex ];
+
+					const start = Math.max( group.start, drawRange.start );
+					const end = Math.min( position.count, Math.min( ( group.start + group.count ), ( drawRange.start + drawRange.count ) ) );
+
+					for ( let j = start, jl = end; j < jl; j += 3 ) {
+
+						const a = j;
+						const b = j + 1;
+						const c = j + 2;
+
+						intersection = checkGeometryIntersection( this, groupMaterial, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c );
+
+						if ( intersection ) {
+
+							intersection.faceIndex = Math.floor( j / 3 ); // triangle number in non-indexed buffer semantics
+							intersection.face.materialIndex = group.materialIndex;
+							intersects.push( intersection );
+
+						}
+
+					}
+
+				}
+
+			} else {
+
+				const start = Math.max( 0, drawRange.start );
+				const end = Math.min( position.count, ( drawRange.start + drawRange.count ) );
+
+				for ( let i = start, il = end; i < il; i += 3 ) {
+
+					const a = i;
+					const b = i + 1;
+					const c = i + 2;
+
+					intersection = checkGeometryIntersection( this, material, raycaster, rayLocalSpace, uv, uv1, normal, a, b, c );
+
+					if ( intersection ) {
+
+						intersection.faceIndex = Math.floor( i / 3 ); // triangle number in non-indexed buffer semantics
+						intersects.push( intersection );
+
+					}
+
+				}
+
+			}
+
+		}
+
+	}
+
+}
+
+function checkIntersection$1( object, material, raycaster, ray, pA, pB, pC, point ) {
+
+	let intersect;
+
+	if ( material.side === BackSide ) {
+
+		intersect = ray.intersectTriangle( pC, pB, pA, true, point );
+
+	} else {
+
+		intersect = ray.intersectTriangle( pA, pB, pC, ( material.side === FrontSide ), point );
+
+	}
+
+	if ( intersect === null ) return null;
+
+	_intersectionPointWorld.copy( point );
+	_intersectionPointWorld.applyMatrix4( object.matrixWorld );
+
+	const distance = raycaster.ray.origin.distanceTo( _intersectionPointWorld );
+
+	if ( distance < raycaster.near || distance > raycaster.far ) return null;
+
+	return {
+		distance: distance,
+		point: _intersectionPointWorld.clone(),
+		object: object
+	};
+
+}
+
+function checkGeometryIntersection( object, material, raycaster, ray, uv, uv1, normal, a, b, c ) {
+
+	object.getVertexPosition( a, _vA$1 );
+	object.getVertexPosition( b, _vB$1 );
+	object.getVertexPosition( c, _vC$1 );
+
+	const intersection = checkIntersection$1( object, material, raycaster, ray, _vA$1, _vB$1, _vC$1, _intersectionPoint );
+
+	if ( intersection ) {
+
+		if ( uv ) {
+
+			_uvA$1.fromBufferAttribute( uv, a );
+			_uvB$1.fromBufferAttribute( uv, b );
+			_uvC$1.fromBufferAttribute( uv, c );
+
+			intersection.uv = Triangle.getInterpolation( _intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() );
+
+		}
+
+		if ( uv1 ) {
+
+			_uvA$1.fromBufferAttribute( uv1, a );
+			_uvB$1.fromBufferAttribute( uv1, b );
+			_uvC$1.fromBufferAttribute( uv1, c );
+
+			intersection.uv1 = Triangle.getInterpolation( _intersectionPoint, _vA$1, _vB$1, _vC$1, _uvA$1, _uvB$1, _uvC$1, new Vector2() );
+
+		}
+
+		if ( normal ) {
+
+			_normalA.fromBufferAttribute( normal, a );
+			_normalB.fromBufferAttribute( normal, b );
+			_normalC.fromBufferAttribute( normal, c );
+
+			intersection.normal = Triangle.getInterpolation( _intersectionPoint, _vA$1, _vB$1, _vC$1, _normalA, _normalB, _normalC, new Vector3() );
+
+			if ( intersection.normal.dot( ray.direction ) > 0 ) {
+
+				intersection.normal.multiplyScalar( - 1 );
+
+			}
+
+		}
+
+		const face = {
+			a: a,
+			b: b,
+			c: c,
+			normal: new Vector3(),
+			materialIndex: 0
+		};
+
+		Triangle.getNormal( _vA$1, _vB$1, _vC$1, face.normal );
+
+		intersection.face = face;
+
+	}
+
+	return intersection;
+
+}
+
+class BoxGeometry extends BufferGeometry {
+
+	constructor( width = 1, height = 1, depth = 1, widthSegments = 1, heightSegments = 1, depthSegments = 1 ) {
+
+		super();
+
+		this.type = 'BoxGeometry';
+
+		this.parameters = {
+			width: width,
+			height: height,
+			depth: depth,
+			widthSegments: widthSegments,
+			heightSegments: heightSegments,
+			depthSegments: depthSegments
+		};
+
+		const scope = this;
+
+		// segments
+
+		widthSegments = Math.floor( widthSegments );
+		heightSegments = Math.floor( heightSegments );
+		depthSegments = Math.floor( depthSegments );
+
+		// buffers
+
+		const indices = [];
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+
+		// helper variables
+
+		let numberOfVertices = 0;
+		let groupStart = 0;
+
+		// build each side of the box geometry
+
+		buildPlane( 'z', 'y', 'x', - 1, - 1, depth, height, width, depthSegments, heightSegments, 0 ); // px
+		buildPlane( 'z', 'y', 'x', 1, - 1, depth, height, - width, depthSegments, heightSegments, 1 ); // nx
+		buildPlane( 'x', 'z', 'y', 1, 1, width, depth, height, widthSegments, depthSegments, 2 ); // py
+		buildPlane( 'x', 'z', 'y', 1, - 1, width, depth, - height, widthSegments, depthSegments, 3 ); // ny
+		buildPlane( 'x', 'y', 'z', 1, - 1, width, height, depth, widthSegments, heightSegments, 4 ); // pz
+		buildPlane( 'x', 'y', 'z', - 1, - 1, width, height, - depth, widthSegments, heightSegments, 5 ); // nz
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+		function buildPlane( u, v, w, udir, vdir, width, height, depth, gridX, gridY, materialIndex ) {
+
+			const segmentWidth = width / gridX;
+			const segmentHeight = height / gridY;
+
+			const widthHalf = width / 2;
+			const heightHalf = height / 2;
+			const depthHalf = depth / 2;
+
+			const gridX1 = gridX + 1;
+			const gridY1 = gridY + 1;
+
+			let vertexCounter = 0;
+			let groupCount = 0;
+
+			const vector = new Vector3();
+
+			// generate vertices, normals and uvs
+
+			for ( let iy = 0; iy < gridY1; iy ++ ) {
+
+				const y = iy * segmentHeight - heightHalf;
+
+				for ( let ix = 0; ix < gridX1; ix ++ ) {
+
+					const x = ix * segmentWidth - widthHalf;
+
+					// set values to correct vector component
+
+					vector[ u ] = x * udir;
+					vector[ v ] = y * vdir;
+					vector[ w ] = depthHalf;
+
+					// now apply vector to vertex buffer
+
+					vertices.push( vector.x, vector.y, vector.z );
+
+					// set values to correct vector component
+
+					vector[ u ] = 0;
+					vector[ v ] = 0;
+					vector[ w ] = depth > 0 ? 1 : - 1;
+
+					// now apply vector to normal buffer
+
+					normals.push( vector.x, vector.y, vector.z );
+
+					// uvs
+
+					uvs.push( ix / gridX );
+					uvs.push( 1 - ( iy / gridY ) );
+
+					// counters
+
+					vertexCounter += 1;
+
+				}
+
+			}
+
+			// indices
+
+			// 1. you need three indices to draw a single face
+			// 2. a single segment consists of two faces
+			// 3. so we need to generate six (2*3) indices per segment
+
+			for ( let iy = 0; iy < gridY; iy ++ ) {
+
+				for ( let ix = 0; ix < gridX; ix ++ ) {
+
+					const a = numberOfVertices + ix + gridX1 * iy;
+					const b = numberOfVertices + ix + gridX1 * ( iy + 1 );
+					const c = numberOfVertices + ( ix + 1 ) + gridX1 * ( iy + 1 );
+					const d = numberOfVertices + ( ix + 1 ) + gridX1 * iy;
+
+					// faces
+
+					indices.push( a, b, d );
+					indices.push( b, c, d );
+
+					// increase counter
+
+					groupCount += 6;
+
+				}
+
+			}
+
+			// add a group to the geometry. this will ensure multi material support
+
+			scope.addGroup( groupStart, groupCount, materialIndex );
+
+			// calculate new start value for groups
+
+			groupStart += groupCount;
+
+			// update total number of vertices
+
+			numberOfVertices += vertexCounter;
+
+		}
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	static fromJSON( data ) {
+
+		return new BoxGeometry( data.width, data.height, data.depth, data.widthSegments, data.heightSegments, data.depthSegments );
+
+	}
+
+}
+
+/**
+ * Uniform Utilities
+ */
+
+function cloneUniforms( src ) {
+
+	const dst = {};
+
+	for ( const u in src ) {
+
+		dst[ u ] = {};
+
+		for ( const p in src[ u ] ) {
+
+			const property = src[ u ][ p ];
+
+			if ( property && ( property.isColor ||
+				property.isMatrix3 || property.isMatrix4 ||
+				property.isVector2 || property.isVector3 || property.isVector4 ||
+				property.isTexture || property.isQuaternion ) ) {
+
+				if ( property.isRenderTargetTexture ) {
+
+					console.warn( 'UniformsUtils: Textures of render targets cannot be cloned via cloneUniforms() or mergeUniforms().' );
+					dst[ u ][ p ] = null;
+
+				} else {
+
+					dst[ u ][ p ] = property.clone();
+
+				}
+
+			} else if ( Array.isArray( property ) ) {
+
+				dst[ u ][ p ] = property.slice();
+
+			} else {
+
+				dst[ u ][ p ] = property;
+
+			}
+
+		}
+
+	}
+
+	return dst;
+
+}
+
+function mergeUniforms( uniforms ) {
+
+	const merged = {};
+
+	for ( let u = 0; u < uniforms.length; u ++ ) {
+
+		const tmp = cloneUniforms( uniforms[ u ] );
+
+		for ( const p in tmp ) {
+
+			merged[ p ] = tmp[ p ];
+
+		}
+
+	}
+
+	return merged;
+
+}
+
+function cloneUniformsGroups( src ) {
+
+	const dst = [];
+
+	for ( let u = 0; u < src.length; u ++ ) {
+
+		dst.push( src[ u ].clone() );
+
+	}
+
+	return dst;
+
+}
+
+function getUnlitUniformColorSpace( renderer ) {
+
+	const currentRenderTarget = renderer.getRenderTarget();
+
+	if ( currentRenderTarget === null ) {
+
+		// https://github.com/mrdoob/three.js/pull/23937#issuecomment-1111067398
+		return renderer.outputColorSpace;
+
+	}
+
+	// https://github.com/mrdoob/three.js/issues/27868
+	if ( currentRenderTarget.isXRRenderTarget === true ) {
+
+		return currentRenderTarget.texture.colorSpace;
+
+	}
+
+	return ColorManagement.workingColorSpace;
+
+}
+
+// Legacy
+
+const UniformsUtils = { clone: cloneUniforms, merge: mergeUniforms };
+
+var default_vertex = "void main() {\n\tgl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );\n}";
+
+var default_fragment = "void main() {\n\tgl_FragColor = vec4( 1.0, 0.0, 0.0, 1.0 );\n}";
+
+class ShaderMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isShaderMaterial = true;
+
+		this.type = 'ShaderMaterial';
+
+		this.defines = {};
+		this.uniforms = {};
+		this.uniformsGroups = [];
+
+		this.vertexShader = default_vertex;
+		this.fragmentShader = default_fragment;
+
+		this.linewidth = 1;
+
+		this.wireframe = false;
+		this.wireframeLinewidth = 1;
+
+		this.fog = false; // set to use scene fog
+		this.lights = false; // set to use scene lights
+		this.clipping = false; // set to use user-defined clipping planes
+
+		this.forceSinglePass = true;
+
+		this.extensions = {
+			clipCullDistance: false, // set to use vertex shader clipping
+			multiDraw: false // set to use vertex shader multi_draw / enable gl_DrawID
+		};
+
+		// When rendered geometry doesn't include these attributes but the material does,
+		// use these default values in WebGL. This avoids errors when buffer data is missing.
+		this.defaultAttributeValues = {
+			'color': [ 1, 1, 1 ],
+			'uv': [ 0, 0 ],
+			'uv1': [ 0, 0 ]
+		};
+
+		this.index0AttributeName = undefined;
+		this.uniformsNeedUpdate = false;
+
+		this.glslVersion = null;
+
+		if ( parameters !== undefined ) {
+
+			this.setValues( parameters );
+
+		}
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.fragmentShader = source.fragmentShader;
+		this.vertexShader = source.vertexShader;
+
+		this.uniforms = cloneUniforms( source.uniforms );
+		this.uniformsGroups = cloneUniformsGroups( source.uniformsGroups );
+
+		this.defines = Object.assign( {}, source.defines );
+
+		this.wireframe = source.wireframe;
+		this.wireframeLinewidth = source.wireframeLinewidth;
+
+		this.fog = source.fog;
+		this.lights = source.lights;
+		this.clipping = source.clipping;
+
+		this.extensions = Object.assign( {}, source.extensions );
+
+		this.glslVersion = source.glslVersion;
+
+		return this;
+
+	}
+
+	toJSON( meta ) {
+
+		const data = super.toJSON( meta );
+
+		data.glslVersion = this.glslVersion;
+		data.uniforms = {};
+
+		for ( const name in this.uniforms ) {
+
+			const uniform = this.uniforms[ name ];
+			const value = uniform.value;
+
+			if ( value && value.isTexture ) {
+
+				data.uniforms[ name ] = {
+					type: 't',
+					value: value.toJSON( meta ).uuid
+				};
+
+			} else if ( value && value.isColor ) {
+
+				data.uniforms[ name ] = {
+					type: 'c',
+					value: value.getHex()
+				};
+
+			} else if ( value && value.isVector2 ) {
+
+				data.uniforms[ name ] = {
+					type: 'v2',
+					value: value.toArray()
+				};
+
+			} else if ( value && value.isVector3 ) {
+
+				data.uniforms[ name ] = {
+					type: 'v3',
+					value: value.toArray()
+				};
+
+			} else if ( value && value.isVector4 ) {
+
+				data.uniforms[ name ] = {
+					type: 'v4',
+					value: value.toArray()
+				};
+
+			} else if ( value && value.isMatrix3 ) {
+
+				data.uniforms[ name ] = {
+					type: 'm3',
+					value: value.toArray()
+				};
+
+			} else if ( value && value.isMatrix4 ) {
+
+				data.uniforms[ name ] = {
+					type: 'm4',
+					value: value.toArray()
+				};
+
+			} else {
+
+				data.uniforms[ name ] = {
+					value: value
+				};
+
+				// note: the array variants v2v, v3v, v4v, m4v and tv are not supported so far
+
+			}
+
+		}
+
+		if ( Object.keys( this.defines ).length > 0 ) data.defines = this.defines;
+
+		data.vertexShader = this.vertexShader;
+		data.fragmentShader = this.fragmentShader;
+
+		data.lights = this.lights;
+		data.clipping = this.clipping;
+
+		const extensions = {};
+
+		for ( const key in this.extensions ) {
+
+			if ( this.extensions[ key ] === true ) extensions[ key ] = true;
+
+		}
+
+		if ( Object.keys( extensions ).length > 0 ) data.extensions = extensions;
+
+		return data;
+
+	}
+
+}
+
+class Camera extends Object3D {
+
+	constructor() {
+
+		super();
+
+		this.isCamera = true;
+
+		this.type = 'Camera';
+
+		this.matrixWorldInverse = new Matrix4();
+
+		this.projectionMatrix = new Matrix4();
+		this.projectionMatrixInverse = new Matrix4();
+
+		this.coordinateSystem = WebGLCoordinateSystem;
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.matrixWorldInverse.copy( source.matrixWorldInverse );
+
+		this.projectionMatrix.copy( source.projectionMatrix );
+		this.projectionMatrixInverse.copy( source.projectionMatrixInverse );
+
+		this.coordinateSystem = source.coordinateSystem;
+
+		return this;
+
+	}
+
+	getWorldDirection( target ) {
+
+		return super.getWorldDirection( target ).negate();
+
+	}
+
+	updateMatrixWorld( force ) {
+
+		super.updateMatrixWorld( force );
+
+		this.matrixWorldInverse.copy( this.matrixWorld ).invert();
+
+	}
+
+	updateWorldMatrix( updateParents, updateChildren ) {
+
+		super.updateWorldMatrix( updateParents, updateChildren );
+
+		this.matrixWorldInverse.copy( this.matrixWorld ).invert();
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+}
+
+const _v3$1 = /*@__PURE__*/ new Vector3();
+const _minTarget = /*@__PURE__*/ new Vector2();
+const _maxTarget = /*@__PURE__*/ new Vector2();
+
+
+class PerspectiveCamera extends Camera {
+
+	constructor( fov = 50, aspect = 1, near = 0.1, far = 2000 ) {
+
+		super();
+
+		this.isPerspectiveCamera = true;
+
+		this.type = 'PerspectiveCamera';
+
+		this.fov = fov;
+		this.zoom = 1;
+
+		this.near = near;
+		this.far = far;
+		this.focus = 10;
+
+		this.aspect = aspect;
+		this.view = null;
+
+		this.filmGauge = 35;	// width of the film (default in millimeters)
+		this.filmOffset = 0;	// horizontal film offset (same unit as gauge)
+
+		this.updateProjectionMatrix();
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.fov = source.fov;
+		this.zoom = source.zoom;
+
+		this.near = source.near;
+		this.far = source.far;
+		this.focus = source.focus;
+
+		this.aspect = source.aspect;
+		this.view = source.view === null ? null : Object.assign( {}, source.view );
+
+		this.filmGauge = source.filmGauge;
+		this.filmOffset = source.filmOffset;
+
+		return this;
+
+	}
+
+	/**
+	 * Sets the FOV by focal length in respect to the current .filmGauge.
+	 *
+	 * The default film gauge is 35, so that the focal length can be specified for
+	 * a 35mm (full frame) camera.
+	 *
+	 * Values for focal length and film gauge must have the same unit.
+	 */
+	setFocalLength( focalLength ) {
+
+		/** see {@link http://www.bobatkins.com/photography/technical/field_of_view.html} */
+		const vExtentSlope = 0.5 * this.getFilmHeight() / focalLength;
+
+		this.fov = RAD2DEG * 2 * Math.atan( vExtentSlope );
+		this.updateProjectionMatrix();
+
+	}
+
+	/**
+	 * Calculates the focal length from the current .fov and .filmGauge.
+	 */
+	getFocalLength() {
+
+		const vExtentSlope = Math.tan( DEG2RAD * 0.5 * this.fov );
+
+		return 0.5 * this.getFilmHeight() / vExtentSlope;
+
+	}
+
+	getEffectiveFOV() {
+
+		return RAD2DEG * 2 * Math.atan(
+			Math.tan( DEG2RAD * 0.5 * this.fov ) / this.zoom );
+
+	}
+
+	getFilmWidth() {
+
+		// film not completely covered in portrait format (aspect < 1)
+		return this.filmGauge * Math.min( this.aspect, 1 );
+
+	}
+
+	getFilmHeight() {
+
+		// film not completely covered in landscape format (aspect > 1)
+		return this.filmGauge / Math.max( this.aspect, 1 );
+
+	}
+
+	/**
+	 * Computes the 2D bounds of the camera's viewable rectangle at a given distance along the viewing direction.
+	 * Sets minTarget and maxTarget to the coordinates of the lower-left and upper-right corners of the view rectangle.
+	 */
+	getViewBounds( distance, minTarget, maxTarget ) {
+
+		_v3$1.set( - 1, - 1, 0.5 ).applyMatrix4( this.projectionMatrixInverse );
+
+		minTarget.set( _v3$1.x, _v3$1.y ).multiplyScalar( - distance / _v3$1.z );
+
+		_v3$1.set( 1, 1, 0.5 ).applyMatrix4( this.projectionMatrixInverse );
+
+		maxTarget.set( _v3$1.x, _v3$1.y ).multiplyScalar( - distance / _v3$1.z );
+
+	}
+
+	/**
+	 * Computes the width and height of the camera's viewable rectangle at a given distance along the viewing direction.
+	 * Copies the result into the target Vector2, where x is width and y is height.
+	 */
+	getViewSize( distance, target ) {
+
+		this.getViewBounds( distance, _minTarget, _maxTarget );
+
+		return target.subVectors( _maxTarget, _minTarget );
+
+	}
+
+	/**
+	 * Sets an offset in a larger frustum. This is useful for multi-window or
+	 * multi-monitor/multi-machine setups.
+	 *
+	 * For example, if you have 3x2 monitors and each monitor is 1920x1080 and
+	 * the monitors are in grid like this
+	 *
+	 *   +---+---+---+
+	 *   | A | B | C |
+	 *   +---+---+---+
+	 *   | D | E | F |
+	 *   +---+---+---+
+	 *
+	 * then for each monitor you would call it like this
+	 *
+	 *   const w = 1920;
+	 *   const h = 1080;
+	 *   const fullWidth = w * 3;
+	 *   const fullHeight = h * 2;
+	 *
+	 *   --A--
+	 *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 0, w, h );
+	 *   --B--
+	 *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 0, w, h );
+	 *   --C--
+	 *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 0, w, h );
+	 *   --D--
+	 *   camera.setViewOffset( fullWidth, fullHeight, w * 0, h * 1, w, h );
+	 *   --E--
+	 *   camera.setViewOffset( fullWidth, fullHeight, w * 1, h * 1, w, h );
+	 *   --F--
+	 *   camera.setViewOffset( fullWidth, fullHeight, w * 2, h * 1, w, h );
+	 *
+	 *   Note there is no reason monitors have to be the same size or in a grid.
+	 */
+	setViewOffset( fullWidth, fullHeight, x, y, width, height ) {
+
+		this.aspect = fullWidth / fullHeight;
+
+		if ( this.view === null ) {
+
+			this.view = {
+				enabled: true,
+				fullWidth: 1,
+				fullHeight: 1,
+				offsetX: 0,
+				offsetY: 0,
+				width: 1,
+				height: 1
+			};
+
+		}
+
+		this.view.enabled = true;
+		this.view.fullWidth = fullWidth;
+		this.view.fullHeight = fullHeight;
+		this.view.offsetX = x;
+		this.view.offsetY = y;
+		this.view.width = width;
+		this.view.height = height;
+
+		this.updateProjectionMatrix();
+
+	}
+
+	clearViewOffset() {
+
+		if ( this.view !== null ) {
+
+			this.view.enabled = false;
+
+		}
+
+		this.updateProjectionMatrix();
+
+	}
+
+	updateProjectionMatrix() {
+
+		const near = this.near;
+		let top = near * Math.tan( DEG2RAD * 0.5 * this.fov ) / this.zoom;
+		let height = 2 * top;
+		let width = this.aspect * height;
+		let left = - 0.5 * width;
+		const view = this.view;
+
+		if ( this.view !== null && this.view.enabled ) {
+
+			const fullWidth = view.fullWidth,
+				fullHeight = view.fullHeight;
+
+			left += view.offsetX * width / fullWidth;
+			top -= view.offsetY * height / fullHeight;
+			width *= view.width / fullWidth;
+			height *= view.height / fullHeight;
+
+		}
+
+		const skew = this.filmOffset;
+		if ( skew !== 0 ) left += near * skew / this.getFilmWidth();
+
+		this.projectionMatrix.makePerspective( left, left + width, top, top - height, near, this.far, this.coordinateSystem );
+
+		this.projectionMatrixInverse.copy( this.projectionMatrix ).invert();
+
+	}
+
+	toJSON( meta ) {
+
+		const data = super.toJSON( meta );
+
+		data.object.fov = this.fov;
+		data.object.zoom = this.zoom;
+
+		data.object.near = this.near;
+		data.object.far = this.far;
+		data.object.focus = this.focus;
+
+		data.object.aspect = this.aspect;
+
+		if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );
+
+		data.object.filmGauge = this.filmGauge;
+		data.object.filmOffset = this.filmOffset;
+
+		return data;
+
+	}
+
+}
+
+const fov = - 90; // negative fov is not an error
+const aspect = 1;
+
+class CubeCamera extends Object3D {
+
+	constructor( near, far, renderTarget ) {
+
+		super();
+
+		this.type = 'CubeCamera';
+
+		this.renderTarget = renderTarget;
+		this.coordinateSystem = null;
+		this.activeMipmapLevel = 0;
+
+		const cameraPX = new PerspectiveCamera( fov, aspect, near, far );
+		cameraPX.layers = this.layers;
+		this.add( cameraPX );
+
+		const cameraNX = new PerspectiveCamera( fov, aspect, near, far );
+		cameraNX.layers = this.layers;
+		this.add( cameraNX );
+
+		const cameraPY = new PerspectiveCamera( fov, aspect, near, far );
+		cameraPY.layers = this.layers;
+		this.add( cameraPY );
+
+		const cameraNY = new PerspectiveCamera( fov, aspect, near, far );
+		cameraNY.layers = this.layers;
+		this.add( cameraNY );
+
+		const cameraPZ = new PerspectiveCamera( fov, aspect, near, far );
+		cameraPZ.layers = this.layers;
+		this.add( cameraPZ );
+
+		const cameraNZ = new PerspectiveCamera( fov, aspect, near, far );
+		cameraNZ.layers = this.layers;
+		this.add( cameraNZ );
+
+	}
+
+	updateCoordinateSystem() {
+
+		const coordinateSystem = this.coordinateSystem;
+
+		const cameras = this.children.concat();
+
+		const [ cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ ] = cameras;
+
+		for ( const camera of cameras ) this.remove( camera );
+
+		if ( coordinateSystem === WebGLCoordinateSystem ) {
+
+			cameraPX.up.set( 0, 1, 0 );
+			cameraPX.lookAt( 1, 0, 0 );
+
+			cameraNX.up.set( 0, 1, 0 );
+			cameraNX.lookAt( - 1, 0, 0 );
+
+			cameraPY.up.set( 0, 0, - 1 );
+			cameraPY.lookAt( 0, 1, 0 );
+
+			cameraNY.up.set( 0, 0, 1 );
+			cameraNY.lookAt( 0, - 1, 0 );
+
+			cameraPZ.up.set( 0, 1, 0 );
+			cameraPZ.lookAt( 0, 0, 1 );
+
+			cameraNZ.up.set( 0, 1, 0 );
+			cameraNZ.lookAt( 0, 0, - 1 );
+
+		} else if ( coordinateSystem === WebGPUCoordinateSystem ) {
+
+			cameraPX.up.set( 0, - 1, 0 );
+			cameraPX.lookAt( - 1, 0, 0 );
+
+			cameraNX.up.set( 0, - 1, 0 );
+			cameraNX.lookAt( 1, 0, 0 );
+
+			cameraPY.up.set( 0, 0, 1 );
+			cameraPY.lookAt( 0, 1, 0 );
+
+			cameraNY.up.set( 0, 0, - 1 );
+			cameraNY.lookAt( 0, - 1, 0 );
+
+			cameraPZ.up.set( 0, - 1, 0 );
+			cameraPZ.lookAt( 0, 0, 1 );
+
+			cameraNZ.up.set( 0, - 1, 0 );
+			cameraNZ.lookAt( 0, 0, - 1 );
+
+		} else {
+
+			throw new Error( 'THREE.CubeCamera.updateCoordinateSystem(): Invalid coordinate system: ' + coordinateSystem );
+
+		}
+
+		for ( const camera of cameras ) {
+
+			this.add( camera );
+
+			camera.updateMatrixWorld();
+
+		}
+
+	}
+
+	update( renderer, scene ) {
+
+		if ( this.parent === null ) this.updateMatrixWorld();
+
+		const { renderTarget, activeMipmapLevel } = this;
+
+		if ( this.coordinateSystem !== renderer.coordinateSystem ) {
+
+			this.coordinateSystem = renderer.coordinateSystem;
+
+			this.updateCoordinateSystem();
+
+		}
+
+		const [ cameraPX, cameraNX, cameraPY, cameraNY, cameraPZ, cameraNZ ] = this.children;
+
+		const currentRenderTarget = renderer.getRenderTarget();
+		const currentActiveCubeFace = renderer.getActiveCubeFace();
+		const currentActiveMipmapLevel = renderer.getActiveMipmapLevel();
+
+		const currentXrEnabled = renderer.xr.enabled;
+
+		renderer.xr.enabled = false;
+
+		const generateMipmaps = renderTarget.texture.generateMipmaps;
+
+		renderTarget.texture.generateMipmaps = false;
+
+		renderer.setRenderTarget( renderTarget, 0, activeMipmapLevel );
+		renderer.render( scene, cameraPX );
+
+		renderer.setRenderTarget( renderTarget, 1, activeMipmapLevel );
+		renderer.render( scene, cameraNX );
+
+		renderer.setRenderTarget( renderTarget, 2, activeMipmapLevel );
+		renderer.render( scene, cameraPY );
+
+		renderer.setRenderTarget( renderTarget, 3, activeMipmapLevel );
+		renderer.render( scene, cameraNY );
+
+		renderer.setRenderTarget( renderTarget, 4, activeMipmapLevel );
+		renderer.render( scene, cameraPZ );
+
+		// mipmaps are generated during the last call of render()
+		// at this point, all sides of the cube render target are defined
+
+		renderTarget.texture.generateMipmaps = generateMipmaps;
+
+		renderer.setRenderTarget( renderTarget, 5, activeMipmapLevel );
+		renderer.render( scene, cameraNZ );
+
+		renderer.setRenderTarget( currentRenderTarget, currentActiveCubeFace, currentActiveMipmapLevel );
+
+		renderer.xr.enabled = currentXrEnabled;
+
+		renderTarget.texture.needsPMREMUpdate = true;
+
+	}
+
+}
+
+class CubeTexture extends Texture {
+
+	constructor( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace ) {
+
+		images = images !== undefined ? images : [];
+		mapping = mapping !== undefined ? mapping : CubeReflectionMapping;
+
+		super( images, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace );
+
+		this.isCubeTexture = true;
+
+		this.flipY = false;
+
+	}
+
+	get images() {
+
+		return this.image;
+
+	}
+
+	set images( value ) {
+
+		this.image = value;
+
+	}
+
+}
+
+class WebGLCubeRenderTarget extends WebGLRenderTarget {
+
+	constructor( size = 1, options = {} ) {
+
+		super( size, size, options );
+
+		this.isWebGLCubeRenderTarget = true;
+
+		const image = { width: size, height: size, depth: 1 };
+		const images = [ image, image, image, image, image, image ];
+
+		this.texture = new CubeTexture( images, options.mapping, options.wrapS, options.wrapT, options.magFilter, options.minFilter, options.format, options.type, options.anisotropy, options.colorSpace );
+
+		// By convention -- likely based on the RenderMan spec from the 1990's -- cube maps are specified by WebGL (and three.js)
+		// in a coordinate system in which positive-x is to the right when looking up the positive-z axis -- in other words,
+		// in a left-handed coordinate system. By continuing this convention, preexisting cube maps continued to render correctly.
+
+		// three.js uses a right-handed coordinate system. So environment maps used in three.js appear to have px and nx swapped
+		// and the flag isRenderTargetTexture controls this conversion. The flip is not required when using WebGLCubeRenderTarget.texture
+		// as a cube texture (this is detected when isRenderTargetTexture is set to true for cube textures).
+
+		this.texture.isRenderTargetTexture = true;
+
+		this.texture.generateMipmaps = options.generateMipmaps !== undefined ? options.generateMipmaps : false;
+		this.texture.minFilter = options.minFilter !== undefined ? options.minFilter : LinearFilter;
+
+	}
+
+	fromEquirectangularTexture( renderer, texture ) {
+
+		this.texture.type = texture.type;
+		this.texture.colorSpace = texture.colorSpace;
+
+		this.texture.generateMipmaps = texture.generateMipmaps;
+		this.texture.minFilter = texture.minFilter;
+		this.texture.magFilter = texture.magFilter;
+
+		const shader = {
+
+			uniforms: {
+				tEquirect: { value: null },
+			},
+
+			vertexShader: /* glsl */`
+
+				varying vec3 vWorldDirection;
+
+				vec3 transformDirection( in vec3 dir, in mat4 matrix ) {
+
+					return normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );
+
+				}
+
+				void main() {
+
+					vWorldDirection = transformDirection( position, modelMatrix );
+
+					#include <begin_vertex>
+					#include <project_vertex>
+
+				}
+			`,
+
+			fragmentShader: /* glsl */`
+
+				uniform sampler2D tEquirect;
+
+				varying vec3 vWorldDirection;
+
+				#include <common>
+
+				void main() {
+
+					vec3 direction = normalize( vWorldDirection );
+
+					vec2 sampleUV = equirectUv( direction );
+
+					gl_FragColor = texture2D( tEquirect, sampleUV );
+
+				}
+			`
+		};
+
+		const geometry = new BoxGeometry( 5, 5, 5 );
+
+		const material = new ShaderMaterial( {
+
+			name: 'CubemapFromEquirect',
+
+			uniforms: cloneUniforms( shader.uniforms ),
+			vertexShader: shader.vertexShader,
+			fragmentShader: shader.fragmentShader,
+			side: BackSide,
+			blending: NoBlending
+
+		} );
+
+		material.uniforms.tEquirect.value = texture;
+
+		const mesh = new Mesh( geometry, material );
+
+		const currentMinFilter = texture.minFilter;
+
+		// Avoid blurred poles
+		if ( texture.minFilter === LinearMipmapLinearFilter ) texture.minFilter = LinearFilter;
+
+		const camera = new CubeCamera( 1, 10, this );
+		camera.update( renderer, mesh );
+
+		texture.minFilter = currentMinFilter;
+
+		mesh.geometry.dispose();
+		mesh.material.dispose();
+
+		return this;
+
+	}
+
+	clear( renderer, color, depth, stencil ) {
+
+		const currentRenderTarget = renderer.getRenderTarget();
+
+		for ( let i = 0; i < 6; i ++ ) {
+
+			renderer.setRenderTarget( this, i );
+
+			renderer.clear( color, depth, stencil );
+
+		}
+
+		renderer.setRenderTarget( currentRenderTarget );
+
+	}
+
+}
+
+const _vector1 = /*@__PURE__*/ new Vector3();
+const _vector2 = /*@__PURE__*/ new Vector3();
+const _normalMatrix = /*@__PURE__*/ new Matrix3();
+
+class Plane {
+
+	constructor( normal = new Vector3( 1, 0, 0 ), constant = 0 ) {
+
+		this.isPlane = true;
+
+		// normal is assumed to be normalized
+
+		this.normal = normal;
+		this.constant = constant;
+
+	}
+
+	set( normal, constant ) {
+
+		this.normal.copy( normal );
+		this.constant = constant;
+
+		return this;
+
+	}
+
+	setComponents( x, y, z, w ) {
+
+		this.normal.set( x, y, z );
+		this.constant = w;
+
+		return this;
+
+	}
+
+	setFromNormalAndCoplanarPoint( normal, point ) {
+
+		this.normal.copy( normal );
+		this.constant = - point.dot( this.normal );
+
+		return this;
+
+	}
+
+	setFromCoplanarPoints( a, b, c ) {
+
+		const normal = _vector1.subVectors( c, b ).cross( _vector2.subVectors( a, b ) ).normalize();
+
+		// Q: should an error be thrown if normal is zero (e.g. degenerate plane)?
+
+		this.setFromNormalAndCoplanarPoint( normal, a );
+
+		return this;
+
+	}
+
+	copy( plane ) {
+
+		this.normal.copy( plane.normal );
+		this.constant = plane.constant;
+
+		return this;
+
+	}
+
+	normalize() {
+
+		// Note: will lead to a divide by zero if the plane is invalid.
+
+		const inverseNormalLength = 1.0 / this.normal.length();
+		this.normal.multiplyScalar( inverseNormalLength );
+		this.constant *= inverseNormalLength;
+
+		return this;
+
+	}
+
+	negate() {
+
+		this.constant *= - 1;
+		this.normal.negate();
+
+		return this;
+
+	}
+
+	distanceToPoint( point ) {
+
+		return this.normal.dot( point ) + this.constant;
+
+	}
+
+	distanceToSphere( sphere ) {
+
+		return this.distanceToPoint( sphere.center ) - sphere.radius;
+
+	}
+
+	projectPoint( point, target ) {
+
+		return target.copy( point ).addScaledVector( this.normal, - this.distanceToPoint( point ) );
+
+	}
+
+	intersectLine( line, target ) {
+
+		const direction = line.delta( _vector1 );
+
+		const denominator = this.normal.dot( direction );
+
+		if ( denominator === 0 ) {
+
+			// line is coplanar, return origin
+			if ( this.distanceToPoint( line.start ) === 0 ) {
+
+				return target.copy( line.start );
+
+			}
+
+			// Unsure if this is the correct method to handle this case.
+			return null;
+
+		}
+
+		const t = - ( line.start.dot( this.normal ) + this.constant ) / denominator;
+
+		if ( t < 0 || t > 1 ) {
+
+			return null;
+
+		}
+
+		return target.copy( line.start ).addScaledVector( direction, t );
+
+	}
+
+	intersectsLine( line ) {
+
+		// Note: this tests if a line intersects the plane, not whether it (or its end-points) are coplanar with it.
+
+		const startSign = this.distanceToPoint( line.start );
+		const endSign = this.distanceToPoint( line.end );
+
+		return ( startSign < 0 && endSign > 0 ) || ( endSign < 0 && startSign > 0 );
+
+	}
+
+	intersectsBox( box ) {
+
+		return box.intersectsPlane( this );
+
+	}
+
+	intersectsSphere( sphere ) {
+
+		return sphere.intersectsPlane( this );
+
+	}
+
+	coplanarPoint( target ) {
+
+		return target.copy( this.normal ).multiplyScalar( - this.constant );
+
+	}
+
+	applyMatrix4( matrix, optionalNormalMatrix ) {
+
+		const normalMatrix = optionalNormalMatrix || _normalMatrix.getNormalMatrix( matrix );
+
+		const referencePoint = this.coplanarPoint( _vector1 ).applyMatrix4( matrix );
+
+		const normal = this.normal.applyMatrix3( normalMatrix ).normalize();
+
+		this.constant = - referencePoint.dot( normal );
+
+		return this;
+
+	}
+
+	translate( offset ) {
+
+		this.constant -= offset.dot( this.normal );
+
+		return this;
+
+	}
+
+	equals( plane ) {
+
+		return plane.normal.equals( this.normal ) && ( plane.constant === this.constant );
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+}
+
+const _sphere$5 = /*@__PURE__*/ new Sphere();
+const _vector$7 = /*@__PURE__*/ new Vector3();
+
+class Frustum {
+
+	constructor( p0 = new Plane(), p1 = new Plane(), p2 = new Plane(), p3 = new Plane(), p4 = new Plane(), p5 = new Plane() ) {
+
+		this.planes = [ p0, p1, p2, p3, p4, p5 ];
+
+	}
+
+	set( p0, p1, p2, p3, p4, p5 ) {
+
+		const planes = this.planes;
+
+		planes[ 0 ].copy( p0 );
+		planes[ 1 ].copy( p1 );
+		planes[ 2 ].copy( p2 );
+		planes[ 3 ].copy( p3 );
+		planes[ 4 ].copy( p4 );
+		planes[ 5 ].copy( p5 );
+
+		return this;
+
+	}
+
+	copy( frustum ) {
+
+		const planes = this.planes;
+
+		for ( let i = 0; i < 6; i ++ ) {
+
+			planes[ i ].copy( frustum.planes[ i ] );
+
+		}
+
+		return this;
+
+	}
+
+	setFromProjectionMatrix( m, coordinateSystem = WebGLCoordinateSystem ) {
+
+		const planes = this.planes;
+		const me = m.elements;
+		const me0 = me[ 0 ], me1 = me[ 1 ], me2 = me[ 2 ], me3 = me[ 3 ];
+		const me4 = me[ 4 ], me5 = me[ 5 ], me6 = me[ 6 ], me7 = me[ 7 ];
+		const me8 = me[ 8 ], me9 = me[ 9 ], me10 = me[ 10 ], me11 = me[ 11 ];
+		const me12 = me[ 12 ], me13 = me[ 13 ], me14 = me[ 14 ], me15 = me[ 15 ];
+
+		planes[ 0 ].setComponents( me3 - me0, me7 - me4, me11 - me8, me15 - me12 ).normalize();
+		planes[ 1 ].setComponents( me3 + me0, me7 + me4, me11 + me8, me15 + me12 ).normalize();
+		planes[ 2 ].setComponents( me3 + me1, me7 + me5, me11 + me9, me15 + me13 ).normalize();
+		planes[ 3 ].setComponents( me3 - me1, me7 - me5, me11 - me9, me15 - me13 ).normalize();
+		planes[ 4 ].setComponents( me3 - me2, me7 - me6, me11 - me10, me15 - me14 ).normalize();
+
+		if ( coordinateSystem === WebGLCoordinateSystem ) {
+
+			planes[ 5 ].setComponents( me3 + me2, me7 + me6, me11 + me10, me15 + me14 ).normalize();
+
+		} else if ( coordinateSystem === WebGPUCoordinateSystem ) {
+
+			planes[ 5 ].setComponents( me2, me6, me10, me14 ).normalize();
+
+		} else {
+
+			throw new Error( 'THREE.Frustum.setFromProjectionMatrix(): Invalid coordinate system: ' + coordinateSystem );
+
+		}
+
+		return this;
+
+	}
+
+	intersectsObject( object ) {
+
+		if ( object.boundingSphere !== undefined ) {
+
+			if ( object.boundingSphere === null ) object.computeBoundingSphere();
+
+			_sphere$5.copy( object.boundingSphere ).applyMatrix4( object.matrixWorld );
+
+		} else {
+
+			const geometry = object.geometry;
+
+			if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
+
+			_sphere$5.copy( geometry.boundingSphere ).applyMatrix4( object.matrixWorld );
+
+		}
+
+		return this.intersectsSphere( _sphere$5 );
+
+	}
+
+	intersectsSprite( sprite ) {
+
+		_sphere$5.center.set( 0, 0, 0 );
+		_sphere$5.radius = 0.7071067811865476;
+		_sphere$5.applyMatrix4( sprite.matrixWorld );
+
+		return this.intersectsSphere( _sphere$5 );
+
+	}
+
+	intersectsSphere( sphere ) {
+
+		const planes = this.planes;
+		const center = sphere.center;
+		const negRadius = - sphere.radius;
+
+		for ( let i = 0; i < 6; i ++ ) {
+
+			const distance = planes[ i ].distanceToPoint( center );
+
+			if ( distance < negRadius ) {
+
+				return false;
+
+			}
+
+		}
+
+		return true;
+
+	}
+
+	intersectsBox( box ) {
+
+		const planes = this.planes;
+
+		for ( let i = 0; i < 6; i ++ ) {
+
+			const plane = planes[ i ];
+
+			// corner at max distance
+
+			_vector$7.x = plane.normal.x > 0 ? box.max.x : box.min.x;
+			_vector$7.y = plane.normal.y > 0 ? box.max.y : box.min.y;
+			_vector$7.z = plane.normal.z > 0 ? box.max.z : box.min.z;
+
+			if ( plane.distanceToPoint( _vector$7 ) < 0 ) {
+
+				return false;
+
+			}
+
+		}
+
+		return true;
+
+	}
+
+	containsPoint( point ) {
+
+		const planes = this.planes;
+
+		for ( let i = 0; i < 6; i ++ ) {
+
+			if ( planes[ i ].distanceToPoint( point ) < 0 ) {
+
+				return false;
+
+			}
+
+		}
+
+		return true;
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+}
+
+function WebGLAnimation() {
+
+	let context = null;
+	let isAnimating = false;
+	let animationLoop = null;
+	let requestId = null;
+
+	function onAnimationFrame( time, frame ) {
+
+		animationLoop( time, frame );
+
+		requestId = context.requestAnimationFrame( onAnimationFrame );
+
+	}
+
+	return {
+
+		start: function () {
+
+			if ( isAnimating === true ) return;
+			if ( animationLoop === null ) return;
+
+			requestId = context.requestAnimationFrame( onAnimationFrame );
+
+			isAnimating = true;
+
+		},
+
+		stop: function () {
+
+			context.cancelAnimationFrame( requestId );
+
+			isAnimating = false;
+
+		},
+
+		setAnimationLoop: function ( callback ) {
+
+			animationLoop = callback;
+
+		},
+
+		setContext: function ( value ) {
+
+			context = value;
+
+		}
+
+	};
+
+}
+
+function WebGLAttributes( gl ) {
+
+	const buffers = new WeakMap();
+
+	function createBuffer( attribute, bufferType ) {
+
+		const array = attribute.array;
+		const usage = attribute.usage;
+		const size = array.byteLength;
+
+		const buffer = gl.createBuffer();
+
+		gl.bindBuffer( bufferType, buffer );
+		gl.bufferData( bufferType, array, usage );
+
+		attribute.onUploadCallback();
+
+		let type;
+
+		if ( array instanceof Float32Array ) {
+
+			type = gl.FLOAT;
+
+		} else if ( array instanceof Uint16Array ) {
+
+			if ( attribute.isFloat16BufferAttribute ) {
+
+				type = gl.HALF_FLOAT;
+
+			} else {
+
+				type = gl.UNSIGNED_SHORT;
+
+			}
+
+		} else if ( array instanceof Int16Array ) {
+
+			type = gl.SHORT;
+
+		} else if ( array instanceof Uint32Array ) {
+
+			type = gl.UNSIGNED_INT;
+
+		} else if ( array instanceof Int32Array ) {
+
+			type = gl.INT;
+
+		} else if ( array instanceof Int8Array ) {
+
+			type = gl.BYTE;
+
+		} else if ( array instanceof Uint8Array ) {
+
+			type = gl.UNSIGNED_BYTE;
+
+		} else if ( array instanceof Uint8ClampedArray ) {
+
+			type = gl.UNSIGNED_BYTE;
+
+		} else {
+
+			throw new Error( 'THREE.WebGLAttributes: Unsupported buffer data format: ' + array );
+
+		}
+
+		return {
+			buffer: buffer,
+			type: type,
+			bytesPerElement: array.BYTES_PER_ELEMENT,
+			version: attribute.version,
+			size: size
+		};
+
+	}
+
+	function updateBuffer( buffer, attribute, bufferType ) {
+
+		const array = attribute.array;
+		const updateRange = attribute._updateRange; // @deprecated, r159
+		const updateRanges = attribute.updateRanges;
+
+		gl.bindBuffer( bufferType, buffer );
+
+		if ( updateRange.count === - 1 && updateRanges.length === 0 ) {
+
+			// Not using update ranges
+			gl.bufferSubData( bufferType, 0, array );
+
+		}
+
+		if ( updateRanges.length !== 0 ) {
+
+			for ( let i = 0, l = updateRanges.length; i < l; i ++ ) {
+
+				const range = updateRanges[ i ];
+
+				gl.bufferSubData( bufferType, range.start * array.BYTES_PER_ELEMENT,
+					array, range.start, range.count );
+
+			}
+
+			attribute.clearUpdateRanges();
+
+		}
+
+		// @deprecated, r159
+		if ( updateRange.count !== - 1 ) {
+
+			gl.bufferSubData( bufferType, updateRange.offset * array.BYTES_PER_ELEMENT,
+				array, updateRange.offset, updateRange.count );
+
+			updateRange.count = - 1; // reset range
+
+		}
+
+		attribute.onUploadCallback();
+
+	}
+
+	//
+
+	function get( attribute ) {
+
+		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
+
+		return buffers.get( attribute );
+
+	}
+
+	function remove( attribute ) {
+
+		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
+
+		const data = buffers.get( attribute );
+
+		if ( data ) {
+
+			gl.deleteBuffer( data.buffer );
+
+			buffers.delete( attribute );
+
+		}
+
+	}
+
+	function update( attribute, bufferType ) {
+
+		if ( attribute.isInterleavedBufferAttribute ) attribute = attribute.data;
+
+		if ( attribute.isGLBufferAttribute ) {
+
+			const cached = buffers.get( attribute );
+
+			if ( ! cached || cached.version < attribute.version ) {
+
+				buffers.set( attribute, {
+					buffer: attribute.buffer,
+					type: attribute.type,
+					bytesPerElement: attribute.elementSize,
+					version: attribute.version
+				} );
+
+			}
+
+			return;
+
+		}
+
+		const data = buffers.get( attribute );
+
+		if ( data === undefined ) {
+
+			buffers.set( attribute, createBuffer( attribute, bufferType ) );
+
+		} else if ( data.version < attribute.version ) {
+
+			if ( data.size !== attribute.array.byteLength ) {
+
+				throw new Error( 'THREE.WebGLAttributes: The size of the buffer attribute\'s array buffer does not match the original size. Resizing buffer attributes is not supported.' );
+
+			}
+
+			updateBuffer( data.buffer, attribute, bufferType );
+
+			data.version = attribute.version;
+
+		}
+
+	}
+
+	return {
+
+		get: get,
+		remove: remove,
+		update: update
+
+	};
+
+}
+
+class PlaneGeometry extends BufferGeometry {
+
+	constructor( width = 1, height = 1, widthSegments = 1, heightSegments = 1 ) {
+
+		super();
+
+		this.type = 'PlaneGeometry';
+
+		this.parameters = {
+			width: width,
+			height: height,
+			widthSegments: widthSegments,
+			heightSegments: heightSegments
+		};
+
+		const width_half = width / 2;
+		const height_half = height / 2;
+
+		const gridX = Math.floor( widthSegments );
+		const gridY = Math.floor( heightSegments );
+
+		const gridX1 = gridX + 1;
+		const gridY1 = gridY + 1;
+
+		const segment_width = width / gridX;
+		const segment_height = height / gridY;
+
+		//
+
+		const indices = [];
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+
+		for ( let iy = 0; iy < gridY1; iy ++ ) {
+
+			const y = iy * segment_height - height_half;
+
+			for ( let ix = 0; ix < gridX1; ix ++ ) {
+
+				const x = ix * segment_width - width_half;
+
+				vertices.push( x, - y, 0 );
+
+				normals.push( 0, 0, 1 );
+
+				uvs.push( ix / gridX );
+				uvs.push( 1 - ( iy / gridY ) );
+
+			}
+
+		}
+
+		for ( let iy = 0; iy < gridY; iy ++ ) {
+
+			for ( let ix = 0; ix < gridX; ix ++ ) {
+
+				const a = ix + gridX1 * iy;
+				const b = ix + gridX1 * ( iy + 1 );
+				const c = ( ix + 1 ) + gridX1 * ( iy + 1 );
+				const d = ( ix + 1 ) + gridX1 * iy;
+
+				indices.push( a, b, d );
+				indices.push( b, c, d );
+
+			}
+
+		}
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	static fromJSON( data ) {
+
+		return new PlaneGeometry( data.width, data.height, data.widthSegments, data.heightSegments );
+
+	}
+
+}
+
+var alphahash_fragment = "#ifdef USE_ALPHAHASH\n\tif ( diffuseColor.a < getAlphaHashThreshold( vPosition ) ) discard;\n#endif";
+
+var alphahash_pars_fragment = "#ifdef USE_ALPHAHASH\n\tconst float ALPHA_HASH_SCALE = 0.05;\n\tfloat hash2D( vec2 value ) {\n\t\treturn fract( 1.0e4 * sin( 17.0 * value.x + 0.1 * value.y ) * ( 0.1 + abs( sin( 13.0 * value.y + value.x ) ) ) );\n\t}\n\tfloat hash3D( vec3 value ) {\n\t\treturn hash2D( vec2( hash2D( value.xy ), value.z ) );\n\t}\n\tfloat getAlphaHashThreshold( vec3 position ) {\n\t\tfloat maxDeriv = max(\n\t\t\tlength( dFdx( position.xyz ) ),\n\t\t\tlength( dFdy( position.xyz ) )\n\t\t);\n\t\tfloat pixScale = 1.0 / ( ALPHA_HASH_SCALE * maxDeriv );\n\t\tvec2 pixScales = vec2(\n\t\t\texp2( floor( log2( pixScale ) ) ),\n\t\t\texp2( ceil( log2( pixScale ) ) )\n\t\t);\n\t\tvec2 alpha = vec2(\n\t\t\thash3D( floor( pixScales.x * position.xyz ) ),\n\t\t\thash3D( floor( pixScales.y * position.xyz ) )\n\t\t);\n\t\tfloat lerpFactor = fract( log2( pixScale ) );\n\t\tfloat x = ( 1.0 - lerpFactor ) * alpha.x + lerpFactor * alpha.y;\n\t\tfloat a = min( lerpFactor, 1.0 - lerpFactor );\n\t\tvec3 cases = vec3(\n\t\t\tx * x / ( 2.0 * a * ( 1.0 - a ) ),\n\t\t\t( x - 0.5 * a ) / ( 1.0 - a ),\n\t\t\t1.0 - ( ( 1.0 - x ) * ( 1.0 - x ) / ( 2.0 * a * ( 1.0 - a ) ) )\n\t\t);\n\t\tfloat threshold = ( x < ( 1.0 - a ) )\n\t\t\t? ( ( x < a ) ? cases.x : cases.y )\n\t\t\t: cases.z;\n\t\treturn clamp( threshold , 1.0e-6, 1.0 );\n\t}\n#endif";
+
+var alphamap_fragment = "#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, vAlphaMapUv ).g;\n#endif";
+
+var alphamap_pars_fragment = "#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
+
+var alphatest_fragment = "#ifdef USE_ALPHATEST\n\t#ifdef ALPHA_TO_COVERAGE\n\tdiffuseColor.a = smoothstep( alphaTest, alphaTest + fwidth( diffuseColor.a ), diffuseColor.a );\n\tif ( diffuseColor.a == 0.0 ) discard;\n\t#else\n\tif ( diffuseColor.a < alphaTest ) discard;\n\t#endif\n#endif";
+
+var alphatest_pars_fragment = "#ifdef USE_ALPHATEST\n\tuniform float alphaTest;\n#endif";
+
+var aomap_fragment = "#ifdef USE_AOMAP\n\tfloat ambientOcclusion = ( texture2D( aoMap, vAoMapUv ).r - 1.0 ) * aoMapIntensity + 1.0;\n\treflectedLight.indirectDiffuse *= ambientOcclusion;\n\t#if defined( USE_CLEARCOAT ) \n\t\tclearcoatSpecularIndirect *= ambientOcclusion;\n\t#endif\n\t#if defined( USE_SHEEN ) \n\t\tsheenSpecularIndirect *= ambientOcclusion;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD )\n\t\tfloat dotNV = saturate( dot( geometryNormal, geometryViewDir ) );\n\t\treflectedLight.indirectSpecular *= computeSpecularOcclusion( dotNV, ambientOcclusion, material.roughness );\n\t#endif\n#endif";
+
+var aomap_pars_fragment = "#ifdef USE_AOMAP\n\tuniform sampler2D aoMap;\n\tuniform float aoMapIntensity;\n#endif";
+
+var batching_pars_vertex = "#ifdef USE_BATCHING\n\t#if ! defined( GL_ANGLE_multi_draw )\n\t#define gl_DrawID _gl_DrawID\n\tuniform int _gl_DrawID;\n\t#endif\n\tuniform highp sampler2D batchingTexture;\n\tuniform highp usampler2D batchingIdTexture;\n\tmat4 getBatchingMatrix( const in float i ) {\n\t\tint size = textureSize( batchingTexture, 0 ).x;\n\t\tint j = int( i ) * 4;\n\t\tint x = j % size;\n\t\tint y = j / size;\n\t\tvec4 v1 = texelFetch( batchingTexture, ivec2( x, y ), 0 );\n\t\tvec4 v2 = texelFetch( batchingTexture, ivec2( x + 1, y ), 0 );\n\t\tvec4 v3 = texelFetch( batchingTexture, ivec2( x + 2, y ), 0 );\n\t\tvec4 v4 = texelFetch( batchingTexture, ivec2( x + 3, y ), 0 );\n\t\treturn mat4( v1, v2, v3, v4 );\n\t}\n\tfloat getIndirectIndex( const in int i ) {\n\t\tint size = textureSize( batchingIdTexture, 0 ).x;\n\t\tint x = i % size;\n\t\tint y = i / size;\n\t\treturn float( texelFetch( batchingIdTexture, ivec2( x, y ), 0 ).r );\n\t}\n#endif\n#ifdef USE_BATCHING_COLOR\n\tuniform sampler2D batchingColorTexture;\n\tvec3 getBatchingColor( const in float i ) {\n\t\tint size = textureSize( batchingColorTexture, 0 ).x;\n\t\tint j = int( i );\n\t\tint x = j % size;\n\t\tint y = j / size;\n\t\treturn texelFetch( batchingColorTexture, ivec2( x, y ), 0 ).rgb;\n\t}\n#endif";
+
+var batching_vertex = "#ifdef USE_BATCHING\n\tmat4 batchingMatrix = getBatchingMatrix( getIndirectIndex( gl_DrawID ) );\n#endif";
+
+var begin_vertex = "vec3 transformed = vec3( position );\n#ifdef USE_ALPHAHASH\n\tvPosition = vec3( position );\n#endif";
+
+var beginnormal_vertex = "vec3 objectNormal = vec3( normal );\n#ifdef USE_TANGENT\n\tvec3 objectTangent = vec3( tangent.xyz );\n#endif";
+
+var bsdfs = "float G_BlinnPhong_Implicit( ) {\n\treturn 0.25;\n}\nfloat D_BlinnPhong( const in float shininess, const in float dotNH ) {\n\treturn RECIPROCAL_PI * ( shininess * 0.5 + 1.0 ) * pow( dotNH, shininess );\n}\nvec3 BRDF_BlinnPhong( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in vec3 specularColor, const in float shininess ) {\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\n\tvec3 F = F_Schlick( specularColor, 1.0, dotVH );\n\tfloat G = G_BlinnPhong_Implicit( );\n\tfloat D = D_BlinnPhong( shininess, dotNH );\n\treturn F * ( G * D );\n} // validated";
+
+var iridescence_fragment = "#ifdef USE_IRIDESCENCE\n\tconst mat3 XYZ_TO_REC709 = mat3(\n\t\t 3.2404542, -0.9692660,  0.0556434,\n\t\t-1.5371385,  1.8760108, -0.2040259,\n\t\t-0.4985314,  0.0415560,  1.0572252\n\t);\n\tvec3 Fresnel0ToIor( vec3 fresnel0 ) {\n\t\tvec3 sqrtF0 = sqrt( fresnel0 );\n\t\treturn ( vec3( 1.0 ) + sqrtF0 ) / ( vec3( 1.0 ) - sqrtF0 );\n\t}\n\tvec3 IorToFresnel0( vec3 transmittedIor, float incidentIor ) {\n\t\treturn pow2( ( transmittedIor - vec3( incidentIor ) ) / ( transmittedIor + vec3( incidentIor ) ) );\n\t}\n\tfloat IorToFresnel0( float transmittedIor, float incidentIor ) {\n\t\treturn pow2( ( transmittedIor - incidentIor ) / ( transmittedIor + incidentIor ));\n\t}\n\tvec3 evalSensitivity( float OPD, vec3 shift ) {\n\t\tfloat phase = 2.0 * PI * OPD * 1.0e-9;\n\t\tvec3 val = vec3( 5.4856e-13, 4.4201e-13, 5.2481e-13 );\n\t\tvec3 pos = vec3( 1.6810e+06, 1.7953e+06, 2.2084e+06 );\n\t\tvec3 var = vec3( 4.3278e+09, 9.3046e+09, 6.6121e+09 );\n\t\tvec3 xyz = val * sqrt( 2.0 * PI * var ) * cos( pos * phase + shift ) * exp( - pow2( phase ) * var );\n\t\txyz.x += 9.7470e-14 * sqrt( 2.0 * PI * 4.5282e+09 ) * cos( 2.2399e+06 * phase + shift[ 0 ] ) * exp( - 4.5282e+09 * pow2( phase ) );\n\t\txyz /= 1.0685e-7;\n\t\tvec3 rgb = XYZ_TO_REC709 * xyz;\n\t\treturn rgb;\n\t}\n\tvec3 evalIridescence( float outsideIOR, float eta2, float cosTheta1, float thinFilmThickness, vec3 baseF0 ) {\n\t\tvec3 I;\n\t\tfloat iridescenceIOR = mix( outsideIOR, eta2, smoothstep( 0.0, 0.03, thinFilmThickness ) );\n\t\tfloat sinTheta2Sq = pow2( outsideIOR / iridescenceIOR ) * ( 1.0 - pow2( cosTheta1 ) );\n\t\tfloat cosTheta2Sq = 1.0 - sinTheta2Sq;\n\t\tif ( cosTheta2Sq < 0.0 ) {\n\t\t\treturn vec3( 1.0 );\n\t\t}\n\t\tfloat cosTheta2 = sqrt( cosTheta2Sq );\n\t\tfloat R0 = IorToFresnel0( iridescenceIOR, outsideIOR );\n\t\tfloat R12 = F_Schlick( R0, 1.0, cosTheta1 );\n\t\tfloat T121 = 1.0 - R12;\n\t\tfloat phi12 = 0.0;\n\t\tif ( iridescenceIOR < outsideIOR ) phi12 = PI;\n\t\tfloat phi21 = PI - phi12;\n\t\tvec3 baseIOR = Fresnel0ToIor( clamp( baseF0, 0.0, 0.9999 ) );\t\tvec3 R1 = IorToFresnel0( baseIOR, iridescenceIOR );\n\t\tvec3 R23 = F_Schlick( R1, 1.0, cosTheta2 );\n\t\tvec3 phi23 = vec3( 0.0 );\n\t\tif ( baseIOR[ 0 ] < iridescenceIOR ) phi23[ 0 ] = PI;\n\t\tif ( baseIOR[ 1 ] < iridescenceIOR ) phi23[ 1 ] = PI;\n\t\tif ( baseIOR[ 2 ] < iridescenceIOR ) phi23[ 2 ] = PI;\n\t\tfloat OPD = 2.0 * iridescenceIOR * thinFilmThickness * cosTheta2;\n\t\tvec3 phi = vec3( phi21 ) + phi23;\n\t\tvec3 R123 = clamp( R12 * R23, 1e-5, 0.9999 );\n\t\tvec3 r123 = sqrt( R123 );\n\t\tvec3 Rs = pow2( T121 ) * R23 / ( vec3( 1.0 ) - R123 );\n\t\tvec3 C0 = R12 + Rs;\n\t\tI = C0;\n\t\tvec3 Cm = Rs - T121;\n\t\tfor ( int m = 1; m <= 2; ++ m ) {\n\t\t\tCm *= r123;\n\t\t\tvec3 Sm = 2.0 * evalSensitivity( float( m ) * OPD, float( m ) * phi );\n\t\t\tI += Cm * Sm;\n\t\t}\n\t\treturn max( I, vec3( 0.0 ) );\n\t}\n#endif";
+
+var bumpmap_pars_fragment = "#ifdef USE_BUMPMAP\n\tuniform sampler2D bumpMap;\n\tuniform float bumpScale;\n\tvec2 dHdxy_fwd() {\n\t\tvec2 dSTdx = dFdx( vBumpMapUv );\n\t\tvec2 dSTdy = dFdy( vBumpMapUv );\n\t\tfloat Hll = bumpScale * texture2D( bumpMap, vBumpMapUv ).x;\n\t\tfloat dBx = bumpScale * texture2D( bumpMap, vBumpMapUv + dSTdx ).x - Hll;\n\t\tfloat dBy = bumpScale * texture2D( bumpMap, vBumpMapUv + dSTdy ).x - Hll;\n\t\treturn vec2( dBx, dBy );\n\t}\n\tvec3 perturbNormalArb( vec3 surf_pos, vec3 surf_norm, vec2 dHdxy, float faceDirection ) {\n\t\tvec3 vSigmaX = normalize( dFdx( surf_pos.xyz ) );\n\t\tvec3 vSigmaY = normalize( dFdy( surf_pos.xyz ) );\n\t\tvec3 vN = surf_norm;\n\t\tvec3 R1 = cross( vSigmaY, vN );\n\t\tvec3 R2 = cross( vN, vSigmaX );\n\t\tfloat fDet = dot( vSigmaX, R1 ) * faceDirection;\n\t\tvec3 vGrad = sign( fDet ) * ( dHdxy.x * R1 + dHdxy.y * R2 );\n\t\treturn normalize( abs( fDet ) * surf_norm - vGrad );\n\t}\n#endif";
+
+var clipping_planes_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvec4 plane;\n\t#ifdef ALPHA_TO_COVERAGE\n\t\tfloat distanceToPlane, distanceGradient;\n\t\tfloat clipOpacity = 1.0;\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tdistanceToPlane = - dot( vClipPosition, plane.xyz ) + plane.w;\n\t\t\tdistanceGradient = fwidth( distanceToPlane ) / 2.0;\n\t\t\tclipOpacity *= smoothstep( - distanceGradient, distanceGradient, distanceToPlane );\n\t\t\tif ( clipOpacity == 0.0 ) discard;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\t\tfloat unionClipOpacity = 1.0;\n\t\t\t#pragma unroll_loop_start\n\t\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\t\tplane = clippingPlanes[ i ];\n\t\t\t\tdistanceToPlane = - dot( vClipPosition, plane.xyz ) + plane.w;\n\t\t\t\tdistanceGradient = fwidth( distanceToPlane ) / 2.0;\n\t\t\t\tunionClipOpacity *= 1.0 - smoothstep( - distanceGradient, distanceGradient, distanceToPlane );\n\t\t\t}\n\t\t\t#pragma unroll_loop_end\n\t\t\tclipOpacity *= 1.0 - unionClipOpacity;\n\t\t#endif\n\t\tdiffuseColor.a *= clipOpacity;\n\t\tif ( diffuseColor.a == 0.0 ) discard;\n\t#else\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < UNION_CLIPPING_PLANES; i ++ ) {\n\t\t\tplane = clippingPlanes[ i ];\n\t\t\tif ( dot( vClipPosition, plane.xyz ) > plane.w ) discard;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t\t#if UNION_CLIPPING_PLANES < NUM_CLIPPING_PLANES\n\t\t\tbool clipped = true;\n\t\t\t#pragma unroll_loop_start\n\t\t\tfor ( int i = UNION_CLIPPING_PLANES; i < NUM_CLIPPING_PLANES; i ++ ) {\n\t\t\t\tplane = clippingPlanes[ i ];\n\t\t\t\tclipped = ( dot( vClipPosition, plane.xyz ) > plane.w ) && clipped;\n\t\t\t}\n\t\t\t#pragma unroll_loop_end\n\t\t\tif ( clipped ) discard;\n\t\t#endif\n\t#endif\n#endif";
+
+var clipping_planes_pars_fragment = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n\tuniform vec4 clippingPlanes[ NUM_CLIPPING_PLANES ];\n#endif";
+
+var clipping_planes_pars_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvarying vec3 vClipPosition;\n#endif";
+
+var clipping_planes_vertex = "#if NUM_CLIPPING_PLANES > 0\n\tvClipPosition = - mvPosition.xyz;\n#endif";
+
+var color_fragment = "#if defined( USE_COLOR_ALPHA )\n\tdiffuseColor *= vColor;\n#elif defined( USE_COLOR )\n\tdiffuseColor.rgb *= vColor;\n#endif";
+
+var color_pars_fragment = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR )\n\tvarying vec3 vColor;\n#endif";
+
+var color_pars_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvarying vec4 vColor;\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR ) || defined( USE_BATCHING_COLOR )\n\tvarying vec3 vColor;\n#endif";
+
+var color_vertex = "#if defined( USE_COLOR_ALPHA )\n\tvColor = vec4( 1.0 );\n#elif defined( USE_COLOR ) || defined( USE_INSTANCING_COLOR ) || defined( USE_BATCHING_COLOR )\n\tvColor = vec3( 1.0 );\n#endif\n#ifdef USE_COLOR\n\tvColor *= color;\n#endif\n#ifdef USE_INSTANCING_COLOR\n\tvColor.xyz *= instanceColor.xyz;\n#endif\n#ifdef USE_BATCHING_COLOR\n\tvec3 batchingColor = getBatchingColor( getIndirectIndex( gl_DrawID ) );\n\tvColor.xyz *= batchingColor.xyz;\n#endif";
+
+var common = "#define PI 3.141592653589793\n#define PI2 6.283185307179586\n#define PI_HALF 1.5707963267948966\n#define RECIPROCAL_PI 0.3183098861837907\n#define RECIPROCAL_PI2 0.15915494309189535\n#define EPSILON 1e-6\n#ifndef saturate\n#define saturate( a ) clamp( a, 0.0, 1.0 )\n#endif\n#define whiteComplement( a ) ( 1.0 - saturate( a ) )\nfloat pow2( const in float x ) { return x*x; }\nvec3 pow2( const in vec3 x ) { return x*x; }\nfloat pow3( const in float x ) { return x*x*x; }\nfloat pow4( const in float x ) { float x2 = x*x; return x2*x2; }\nfloat max3( const in vec3 v ) { return max( max( v.x, v.y ), v.z ); }\nfloat average( const in vec3 v ) { return dot( v, vec3( 0.3333333 ) ); }\nhighp float rand( const in vec2 uv ) {\n\tconst highp float a = 12.9898, b = 78.233, c = 43758.5453;\n\thighp float dt = dot( uv.xy, vec2( a,b ) ), sn = mod( dt, PI );\n\treturn fract( sin( sn ) * c );\n}\n#ifdef HIGH_PRECISION\n\tfloat precisionSafeLength( vec3 v ) { return length( v ); }\n#else\n\tfloat precisionSafeLength( vec3 v ) {\n\t\tfloat maxComponent = max3( abs( v ) );\n\t\treturn length( v / maxComponent ) * maxComponent;\n\t}\n#endif\nstruct IncidentLight {\n\tvec3 color;\n\tvec3 direction;\n\tbool visible;\n};\nstruct ReflectedLight {\n\tvec3 directDiffuse;\n\tvec3 directSpecular;\n\tvec3 indirectDiffuse;\n\tvec3 indirectSpecular;\n};\n#ifdef USE_ALPHAHASH\n\tvarying vec3 vPosition;\n#endif\nvec3 transformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( matrix * vec4( dir, 0.0 ) ).xyz );\n}\nvec3 inverseTransformDirection( in vec3 dir, in mat4 matrix ) {\n\treturn normalize( ( vec4( dir, 0.0 ) * matrix ).xyz );\n}\nmat3 transposeMat3( const in mat3 m ) {\n\tmat3 tmp;\n\ttmp[ 0 ] = vec3( m[ 0 ].x, m[ 1 ].x, m[ 2 ].x );\n\ttmp[ 1 ] = vec3( m[ 0 ].y, m[ 1 ].y, m[ 2 ].y );\n\ttmp[ 2 ] = vec3( m[ 0 ].z, m[ 1 ].z, m[ 2 ].z );\n\treturn tmp;\n}\nbool isPerspectiveMatrix( mat4 m ) {\n\treturn m[ 2 ][ 3 ] == - 1.0;\n}\nvec2 equirectUv( in vec3 dir ) {\n\tfloat u = atan( dir.z, dir.x ) * RECIPROCAL_PI2 + 0.5;\n\tfloat v = asin( clamp( dir.y, - 1.0, 1.0 ) ) * RECIPROCAL_PI + 0.5;\n\treturn vec2( u, v );\n}\nvec3 BRDF_Lambert( const in vec3 diffuseColor ) {\n\treturn RECIPROCAL_PI * diffuseColor;\n}\nvec3 F_Schlick( const in vec3 f0, const in float f90, const in float dotVH ) {\n\tfloat fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );\n\treturn f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );\n}\nfloat F_Schlick( const in float f0, const in float f90, const in float dotVH ) {\n\tfloat fresnel = exp2( ( - 5.55473 * dotVH - 6.98316 ) * dotVH );\n\treturn f0 * ( 1.0 - fresnel ) + ( f90 * fresnel );\n} // validated";
+
+var cube_uv_reflection_fragment = "#ifdef ENVMAP_TYPE_CUBE_UV\n\t#define cubeUV_minMipLevel 4.0\n\t#define cubeUV_minTileSize 16.0\n\tfloat getFace( vec3 direction ) {\n\t\tvec3 absDirection = abs( direction );\n\t\tfloat face = - 1.0;\n\t\tif ( absDirection.x > absDirection.z ) {\n\t\t\tif ( absDirection.x > absDirection.y )\n\t\t\t\tface = direction.x > 0.0 ? 0.0 : 3.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t} else {\n\t\t\tif ( absDirection.z > absDirection.y )\n\t\t\t\tface = direction.z > 0.0 ? 2.0 : 5.0;\n\t\t\telse\n\t\t\t\tface = direction.y > 0.0 ? 1.0 : 4.0;\n\t\t}\n\t\treturn face;\n\t}\n\tvec2 getUV( vec3 direction, float face ) {\n\t\tvec2 uv;\n\t\tif ( face == 0.0 ) {\n\t\t\tuv = vec2( direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 1.0 ) {\n\t\t\tuv = vec2( - direction.x, - direction.z ) / abs( direction.y );\n\t\t} else if ( face == 2.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.y ) / abs( direction.z );\n\t\t} else if ( face == 3.0 ) {\n\t\t\tuv = vec2( - direction.z, direction.y ) / abs( direction.x );\n\t\t} else if ( face == 4.0 ) {\n\t\t\tuv = vec2( - direction.x, direction.z ) / abs( direction.y );\n\t\t} else {\n\t\t\tuv = vec2( direction.x, direction.y ) / abs( direction.z );\n\t\t}\n\t\treturn 0.5 * ( uv + 1.0 );\n\t}\n\tvec3 bilinearCubeUV( sampler2D envMap, vec3 direction, float mipInt ) {\n\t\tfloat face = getFace( direction );\n\t\tfloat filterInt = max( cubeUV_minMipLevel - mipInt, 0.0 );\n\t\tmipInt = max( mipInt, cubeUV_minMipLevel );\n\t\tfloat faceSize = exp2( mipInt );\n\t\thighp vec2 uv = getUV( direction, face ) * ( faceSize - 2.0 ) + 1.0;\n\t\tif ( face > 2.0 ) {\n\t\t\tuv.y += faceSize;\n\t\t\tface -= 3.0;\n\t\t}\n\t\tuv.x += face * faceSize;\n\t\tuv.x += filterInt * 3.0 * cubeUV_minTileSize;\n\t\tuv.y += 4.0 * ( exp2( CUBEUV_MAX_MIP ) - faceSize );\n\t\tuv.x *= CUBEUV_TEXEL_WIDTH;\n\t\tuv.y *= CUBEUV_TEXEL_HEIGHT;\n\t\t#ifdef texture2DGradEXT\n\t\t\treturn texture2DGradEXT( envMap, uv, vec2( 0.0 ), vec2( 0.0 ) ).rgb;\n\t\t#else\n\t\t\treturn texture2D( envMap, uv ).rgb;\n\t\t#endif\n\t}\n\t#define cubeUV_r0 1.0\n\t#define cubeUV_m0 - 2.0\n\t#define cubeUV_r1 0.8\n\t#define cubeUV_m1 - 1.0\n\t#define cubeUV_r4 0.4\n\t#define cubeUV_m4 2.0\n\t#define cubeUV_r5 0.305\n\t#define cubeUV_m5 3.0\n\t#define cubeUV_r6 0.21\n\t#define cubeUV_m6 4.0\n\tfloat roughnessToMip( float roughness ) {\n\t\tfloat mip = 0.0;\n\t\tif ( roughness >= cubeUV_r1 ) {\n\t\t\tmip = ( cubeUV_r0 - roughness ) * ( cubeUV_m1 - cubeUV_m0 ) / ( cubeUV_r0 - cubeUV_r1 ) + cubeUV_m0;\n\t\t} else if ( roughness >= cubeUV_r4 ) {\n\t\t\tmip = ( cubeUV_r1 - roughness ) * ( cubeUV_m4 - cubeUV_m1 ) / ( cubeUV_r1 - cubeUV_r4 ) + cubeUV_m1;\n\t\t} else if ( roughness >= cubeUV_r5 ) {\n\t\t\tmip = ( cubeUV_r4 - roughness ) * ( cubeUV_m5 - cubeUV_m4 ) / ( cubeUV_r4 - cubeUV_r5 ) + cubeUV_m4;\n\t\t} else if ( roughness >= cubeUV_r6 ) {\n\t\t\tmip = ( cubeUV_r5 - roughness ) * ( cubeUV_m6 - cubeUV_m5 ) / ( cubeUV_r5 - cubeUV_r6 ) + cubeUV_m5;\n\t\t} else {\n\t\t\tmip = - 2.0 * log2( 1.16 * roughness );\t\t}\n\t\treturn mip;\n\t}\n\tvec4 textureCubeUV( sampler2D envMap, vec3 sampleDir, float roughness ) {\n\t\tfloat mip = clamp( roughnessToMip( roughness ), cubeUV_m0, CUBEUV_MAX_MIP );\n\t\tfloat mipF = fract( mip );\n\t\tfloat mipInt = floor( mip );\n\t\tvec3 color0 = bilinearCubeUV( envMap, sampleDir, mipInt );\n\t\tif ( mipF == 0.0 ) {\n\t\t\treturn vec4( color0, 1.0 );\n\t\t} else {\n\t\t\tvec3 color1 = bilinearCubeUV( envMap, sampleDir, mipInt + 1.0 );\n\t\t\treturn vec4( mix( color0, color1, mipF ), 1.0 );\n\t\t}\n\t}\n#endif";
+
+var defaultnormal_vertex = "vec3 transformedNormal = objectNormal;\n#ifdef USE_TANGENT\n\tvec3 transformedTangent = objectTangent;\n#endif\n#ifdef USE_BATCHING\n\tmat3 bm = mat3( batchingMatrix );\n\ttransformedNormal /= vec3( dot( bm[ 0 ], bm[ 0 ] ), dot( bm[ 1 ], bm[ 1 ] ), dot( bm[ 2 ], bm[ 2 ] ) );\n\ttransformedNormal = bm * transformedNormal;\n\t#ifdef USE_TANGENT\n\t\ttransformedTangent = bm * transformedTangent;\n\t#endif\n#endif\n#ifdef USE_INSTANCING\n\tmat3 im = mat3( instanceMatrix );\n\ttransformedNormal /= vec3( dot( im[ 0 ], im[ 0 ] ), dot( im[ 1 ], im[ 1 ] ), dot( im[ 2 ], im[ 2 ] ) );\n\ttransformedNormal = im * transformedNormal;\n\t#ifdef USE_TANGENT\n\t\ttransformedTangent = im * transformedTangent;\n\t#endif\n#endif\ntransformedNormal = normalMatrix * transformedNormal;\n#ifdef FLIP_SIDED\n\ttransformedNormal = - transformedNormal;\n#endif\n#ifdef USE_TANGENT\n\ttransformedTangent = ( modelViewMatrix * vec4( transformedTangent, 0.0 ) ).xyz;\n\t#ifdef FLIP_SIDED\n\t\ttransformedTangent = - transformedTangent;\n\t#endif\n#endif";
+
+var displacementmap_pars_vertex = "#ifdef USE_DISPLACEMENTMAP\n\tuniform sampler2D displacementMap;\n\tuniform float displacementScale;\n\tuniform float displacementBias;\n#endif";
+
+var displacementmap_vertex = "#ifdef USE_DISPLACEMENTMAP\n\ttransformed += normalize( objectNormal ) * ( texture2D( displacementMap, vDisplacementMapUv ).x * displacementScale + displacementBias );\n#endif";
+
+var emissivemap_fragment = "#ifdef USE_EMISSIVEMAP\n\tvec4 emissiveColor = texture2D( emissiveMap, vEmissiveMapUv );\n\ttotalEmissiveRadiance *= emissiveColor.rgb;\n#endif";
+
+var emissivemap_pars_fragment = "#ifdef USE_EMISSIVEMAP\n\tuniform sampler2D emissiveMap;\n#endif";
+
+var colorspace_fragment = "gl_FragColor = linearToOutputTexel( gl_FragColor );";
+
+var colorspace_pars_fragment = "\nconst mat3 LINEAR_SRGB_TO_LINEAR_DISPLAY_P3 = mat3(\n\tvec3( 0.8224621, 0.177538, 0.0 ),\n\tvec3( 0.0331941, 0.9668058, 0.0 ),\n\tvec3( 0.0170827, 0.0723974, 0.9105199 )\n);\nconst mat3 LINEAR_DISPLAY_P3_TO_LINEAR_SRGB = mat3(\n\tvec3( 1.2249401, - 0.2249404, 0.0 ),\n\tvec3( - 0.0420569, 1.0420571, 0.0 ),\n\tvec3( - 0.0196376, - 0.0786361, 1.0982735 )\n);\nvec4 LinearSRGBToLinearDisplayP3( in vec4 value ) {\n\treturn vec4( value.rgb * LINEAR_SRGB_TO_LINEAR_DISPLAY_P3, value.a );\n}\nvec4 LinearDisplayP3ToLinearSRGB( in vec4 value ) {\n\treturn vec4( value.rgb * LINEAR_DISPLAY_P3_TO_LINEAR_SRGB, value.a );\n}\nvec4 LinearTransferOETF( in vec4 value ) {\n\treturn value;\n}\nvec4 sRGBTransferOETF( in vec4 value ) {\n\treturn vec4( mix( pow( value.rgb, vec3( 0.41666 ) ) * 1.055 - vec3( 0.055 ), value.rgb * 12.92, vec3( lessThanEqual( value.rgb, vec3( 0.0031308 ) ) ) ), value.a );\n}";
+
+var envmap_fragment = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvec3 cameraToFrag;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToFrag = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToFrag = normalize( vWorldPosition - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvec3 reflectVec = reflect( cameraToFrag, worldNormal );\n\t\t#else\n\t\t\tvec3 reflectVec = refract( cameraToFrag, worldNormal, refractionRatio );\n\t\t#endif\n\t#else\n\t\tvec3 reflectVec = vReflect;\n\t#endif\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 envColor = textureCube( envMap, envMapRotation * vec3( flipEnvMap * reflectVec.x, reflectVec.yz ) );\n\t#else\n\t\tvec4 envColor = vec4( 0.0 );\n\t#endif\n\t#ifdef ENVMAP_BLENDING_MULTIPLY\n\t\toutgoingLight = mix( outgoingLight, outgoingLight * envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_MIX )\n\t\toutgoingLight = mix( outgoingLight, envColor.xyz, specularStrength * reflectivity );\n\t#elif defined( ENVMAP_BLENDING_ADD )\n\t\toutgoingLight += envColor.xyz * specularStrength * reflectivity;\n\t#endif\n#endif";
+
+var envmap_common_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float envMapIntensity;\n\tuniform float flipEnvMap;\n\tuniform mat3 envMapRotation;\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tuniform samplerCube envMap;\n\t#else\n\t\tuniform sampler2D envMap;\n\t#endif\n\t\n#endif";
+
+var envmap_pars_fragment = "#ifdef USE_ENVMAP\n\tuniform float reflectivity;\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\tvarying vec3 vWorldPosition;\n\t\tuniform float refractionRatio;\n\t#else\n\t\tvarying vec3 vReflect;\n\t#endif\n#endif";
+
+var envmap_pars_vertex = "#ifdef USE_ENVMAP\n\t#if defined( USE_BUMPMAP ) || defined( USE_NORMALMAP ) || defined( PHONG ) || defined( LAMBERT )\n\t\t#define ENV_WORLDPOS\n\t#endif\n\t#ifdef ENV_WORLDPOS\n\t\t\n\t\tvarying vec3 vWorldPosition;\n\t#else\n\t\tvarying vec3 vReflect;\n\t\tuniform float refractionRatio;\n\t#endif\n#endif";
+
+var envmap_vertex = "#ifdef USE_ENVMAP\n\t#ifdef ENV_WORLDPOS\n\t\tvWorldPosition = worldPosition.xyz;\n\t#else\n\t\tvec3 cameraToVertex;\n\t\tif ( isOrthographic ) {\n\t\t\tcameraToVertex = normalize( vec3( - viewMatrix[ 0 ][ 2 ], - viewMatrix[ 1 ][ 2 ], - viewMatrix[ 2 ][ 2 ] ) );\n\t\t} else {\n\t\t\tcameraToVertex = normalize( worldPosition.xyz - cameraPosition );\n\t\t}\n\t\tvec3 worldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\t\t#ifdef ENVMAP_MODE_REFLECTION\n\t\t\tvReflect = reflect( cameraToVertex, worldNormal );\n\t\t#else\n\t\t\tvReflect = refract( cameraToVertex, worldNormal, refractionRatio );\n\t\t#endif\n\t#endif\n#endif";
+
+var fog_vertex = "#ifdef USE_FOG\n\tvFogDepth = - mvPosition.z;\n#endif";
+
+var fog_pars_vertex = "#ifdef USE_FOG\n\tvarying float vFogDepth;\n#endif";
+
+var fog_fragment = "#ifdef USE_FOG\n\t#ifdef FOG_EXP2\n\t\tfloat fogFactor = 1.0 - exp( - fogDensity * fogDensity * vFogDepth * vFogDepth );\n\t#else\n\t\tfloat fogFactor = smoothstep( fogNear, fogFar, vFogDepth );\n\t#endif\n\tgl_FragColor.rgb = mix( gl_FragColor.rgb, fogColor, fogFactor );\n#endif";
+
+var fog_pars_fragment = "#ifdef USE_FOG\n\tuniform vec3 fogColor;\n\tvarying float vFogDepth;\n\t#ifdef FOG_EXP2\n\t\tuniform float fogDensity;\n\t#else\n\t\tuniform float fogNear;\n\t\tuniform float fogFar;\n\t#endif\n#endif";
+
+var gradientmap_pars_fragment = "#ifdef USE_GRADIENTMAP\n\tuniform sampler2D gradientMap;\n#endif\nvec3 getGradientIrradiance( vec3 normal, vec3 lightDirection ) {\n\tfloat dotNL = dot( normal, lightDirection );\n\tvec2 coord = vec2( dotNL * 0.5 + 0.5, 0.0 );\n\t#ifdef USE_GRADIENTMAP\n\t\treturn vec3( texture2D( gradientMap, coord ).r );\n\t#else\n\t\tvec2 fw = fwidth( coord ) * 0.5;\n\t\treturn mix( vec3( 0.7 ), vec3( 1.0 ), smoothstep( 0.7 - fw.x, 0.7 + fw.x, coord.x ) );\n\t#endif\n}";
+
+var lightmap_pars_fragment = "#ifdef USE_LIGHTMAP\n\tuniform sampler2D lightMap;\n\tuniform float lightMapIntensity;\n#endif";
+
+var lights_lambert_fragment = "LambertMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularStrength = specularStrength;";
+
+var lights_lambert_pars_fragment = "varying vec3 vViewPosition;\nstruct LambertMaterial {\n\tvec3 diffuseColor;\n\tfloat specularStrength;\n};\nvoid RE_Direct_Lambert( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in LambertMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometryNormal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Lambert( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in LambertMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Lambert\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Lambert";
+
+var lights_pars_begin = "uniform bool receiveShadow;\nuniform vec3 ambientLightColor;\n#if defined( USE_LIGHT_PROBES )\n\tuniform vec3 lightProbe[ 9 ];\n#endif\nvec3 shGetIrradianceAt( in vec3 normal, in vec3 shCoefficients[ 9 ] ) {\n\tfloat x = normal.x, y = normal.y, z = normal.z;\n\tvec3 result = shCoefficients[ 0 ] * 0.886227;\n\tresult += shCoefficients[ 1 ] * 2.0 * 0.511664 * y;\n\tresult += shCoefficients[ 2 ] * 2.0 * 0.511664 * z;\n\tresult += shCoefficients[ 3 ] * 2.0 * 0.511664 * x;\n\tresult += shCoefficients[ 4 ] * 2.0 * 0.429043 * x * y;\n\tresult += shCoefficients[ 5 ] * 2.0 * 0.429043 * y * z;\n\tresult += shCoefficients[ 6 ] * ( 0.743125 * z * z - 0.247708 );\n\tresult += shCoefficients[ 7 ] * 2.0 * 0.429043 * x * z;\n\tresult += shCoefficients[ 8 ] * 0.429043 * ( x * x - y * y );\n\treturn result;\n}\nvec3 getLightProbeIrradiance( const in vec3 lightProbe[ 9 ], const in vec3 normal ) {\n\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\tvec3 irradiance = shGetIrradianceAt( worldNormal, lightProbe );\n\treturn irradiance;\n}\nvec3 getAmbientLightIrradiance( const in vec3 ambientLightColor ) {\n\tvec3 irradiance = ambientLightColor;\n\treturn irradiance;\n}\nfloat getDistanceAttenuation( const in float lightDistance, const in float cutoffDistance, const in float decayExponent ) {\n\tfloat distanceFalloff = 1.0 / max( pow( lightDistance, decayExponent ), 0.01 );\n\tif ( cutoffDistance > 0.0 ) {\n\t\tdistanceFalloff *= pow2( saturate( 1.0 - pow4( lightDistance / cutoffDistance ) ) );\n\t}\n\treturn distanceFalloff;\n}\nfloat getSpotAttenuation( const in float coneCosine, const in float penumbraCosine, const in float angleCosine ) {\n\treturn smoothstep( coneCosine, penumbraCosine, angleCosine );\n}\n#if NUM_DIR_LIGHTS > 0\n\tstruct DirectionalLight {\n\t\tvec3 direction;\n\t\tvec3 color;\n\t};\n\tuniform DirectionalLight directionalLights[ NUM_DIR_LIGHTS ];\n\tvoid getDirectionalLightInfo( const in DirectionalLight directionalLight, out IncidentLight light ) {\n\t\tlight.color = directionalLight.color;\n\t\tlight.direction = directionalLight.direction;\n\t\tlight.visible = true;\n\t}\n#endif\n#if NUM_POINT_LIGHTS > 0\n\tstruct PointLight {\n\t\tvec3 position;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t};\n\tuniform PointLight pointLights[ NUM_POINT_LIGHTS ];\n\tvoid getPointLightInfo( const in PointLight pointLight, const in vec3 geometryPosition, out IncidentLight light ) {\n\t\tvec3 lVector = pointLight.position - geometryPosition;\n\t\tlight.direction = normalize( lVector );\n\t\tfloat lightDistance = length( lVector );\n\t\tlight.color = pointLight.color;\n\t\tlight.color *= getDistanceAttenuation( lightDistance, pointLight.distance, pointLight.decay );\n\t\tlight.visible = ( light.color != vec3( 0.0 ) );\n\t}\n#endif\n#if NUM_SPOT_LIGHTS > 0\n\tstruct SpotLight {\n\t\tvec3 position;\n\t\tvec3 direction;\n\t\tvec3 color;\n\t\tfloat distance;\n\t\tfloat decay;\n\t\tfloat coneCos;\n\t\tfloat penumbraCos;\n\t};\n\tuniform SpotLight spotLights[ NUM_SPOT_LIGHTS ];\n\tvoid getSpotLightInfo( const in SpotLight spotLight, const in vec3 geometryPosition, out IncidentLight light ) {\n\t\tvec3 lVector = spotLight.position - geometryPosition;\n\t\tlight.direction = normalize( lVector );\n\t\tfloat angleCos = dot( light.direction, spotLight.direction );\n\t\tfloat spotAttenuation = getSpotAttenuation( spotLight.coneCos, spotLight.penumbraCos, angleCos );\n\t\tif ( spotAttenuation > 0.0 ) {\n\t\t\tfloat lightDistance = length( lVector );\n\t\t\tlight.color = spotLight.color * spotAttenuation;\n\t\t\tlight.color *= getDistanceAttenuation( lightDistance, spotLight.distance, spotLight.decay );\n\t\t\tlight.visible = ( light.color != vec3( 0.0 ) );\n\t\t} else {\n\t\t\tlight.color = vec3( 0.0 );\n\t\t\tlight.visible = false;\n\t\t}\n\t}\n#endif\n#if NUM_RECT_AREA_LIGHTS > 0\n\tstruct RectAreaLight {\n\t\tvec3 color;\n\t\tvec3 position;\n\t\tvec3 halfWidth;\n\t\tvec3 halfHeight;\n\t};\n\tuniform sampler2D ltc_1;\tuniform sampler2D ltc_2;\n\tuniform RectAreaLight rectAreaLights[ NUM_RECT_AREA_LIGHTS ];\n#endif\n#if NUM_HEMI_LIGHTS > 0\n\tstruct HemisphereLight {\n\t\tvec3 direction;\n\t\tvec3 skyColor;\n\t\tvec3 groundColor;\n\t};\n\tuniform HemisphereLight hemisphereLights[ NUM_HEMI_LIGHTS ];\n\tvec3 getHemisphereLightIrradiance( const in HemisphereLight hemiLight, const in vec3 normal ) {\n\t\tfloat dotNL = dot( normal, hemiLight.direction );\n\t\tfloat hemiDiffuseWeight = 0.5 * dotNL + 0.5;\n\t\tvec3 irradiance = mix( hemiLight.groundColor, hemiLight.skyColor, hemiDiffuseWeight );\n\t\treturn irradiance;\n\t}\n#endif";
+
+var envmap_physical_pars_fragment = "#ifdef USE_ENVMAP\n\tvec3 getIBLIrradiance( const in vec3 normal ) {\n\t\t#ifdef ENVMAP_TYPE_CUBE_UV\n\t\t\tvec3 worldNormal = inverseTransformDirection( normal, viewMatrix );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, envMapRotation * worldNormal, 1.0 );\n\t\t\treturn PI * envMapColor.rgb * envMapIntensity;\n\t\t#else\n\t\t\treturn vec3( 0.0 );\n\t\t#endif\n\t}\n\tvec3 getIBLRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness ) {\n\t\t#ifdef ENVMAP_TYPE_CUBE_UV\n\t\t\tvec3 reflectVec = reflect( - viewDir, normal );\n\t\t\treflectVec = normalize( mix( reflectVec, normal, roughness * roughness) );\n\t\t\treflectVec = inverseTransformDirection( reflectVec, viewMatrix );\n\t\t\tvec4 envMapColor = textureCubeUV( envMap, envMapRotation * reflectVec, roughness );\n\t\t\treturn envMapColor.rgb * envMapIntensity;\n\t\t#else\n\t\t\treturn vec3( 0.0 );\n\t\t#endif\n\t}\n\t#ifdef USE_ANISOTROPY\n\t\tvec3 getIBLAnisotropyRadiance( const in vec3 viewDir, const in vec3 normal, const in float roughness, const in vec3 bitangent, const in float anisotropy ) {\n\t\t\t#ifdef ENVMAP_TYPE_CUBE_UV\n\t\t\t\tvec3 bentNormal = cross( bitangent, viewDir );\n\t\t\t\tbentNormal = normalize( cross( bentNormal, bitangent ) );\n\t\t\t\tbentNormal = normalize( mix( bentNormal, normal, pow2( pow2( 1.0 - anisotropy * ( 1.0 - roughness ) ) ) ) );\n\t\t\t\treturn getIBLRadiance( viewDir, bentNormal, roughness );\n\t\t\t#else\n\t\t\t\treturn vec3( 0.0 );\n\t\t\t#endif\n\t\t}\n\t#endif\n#endif";
+
+var lights_toon_fragment = "ToonMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;";
+
+var lights_toon_pars_fragment = "varying vec3 vViewPosition;\nstruct ToonMaterial {\n\tvec3 diffuseColor;\n};\nvoid RE_Direct_Toon( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\tvec3 irradiance = getGradientIrradiance( geometryNormal, directLight.direction ) * directLight.color;\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Toon( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in ToonMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_Toon\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Toon";
+
+var lights_phong_fragment = "BlinnPhongMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb;\nmaterial.specularColor = specular;\nmaterial.specularShininess = shininess;\nmaterial.specularStrength = specularStrength;";
+
+var lights_phong_pars_fragment = "varying vec3 vViewPosition;\nstruct BlinnPhongMaterial {\n\tvec3 diffuseColor;\n\tvec3 specularColor;\n\tfloat specularShininess;\n\tfloat specularStrength;\n};\nvoid RE_Direct_BlinnPhong( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometryNormal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n\treflectedLight.directSpecular += irradiance * BRDF_BlinnPhong( directLight.direction, geometryViewDir, geometryNormal, material.specularColor, material.specularShininess ) * material.specularStrength;\n}\nvoid RE_IndirectDiffuse_BlinnPhong( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in BlinnPhongMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\n#define RE_Direct\t\t\t\tRE_Direct_BlinnPhong\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_BlinnPhong";
+
+var lights_physical_fragment = "PhysicalMaterial material;\nmaterial.diffuseColor = diffuseColor.rgb * ( 1.0 - metalnessFactor );\nvec3 dxy = max( abs( dFdx( nonPerturbedNormal ) ), abs( dFdy( nonPerturbedNormal ) ) );\nfloat geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );\nmaterial.roughness = max( roughnessFactor, 0.0525 );material.roughness += geometryRoughness;\nmaterial.roughness = min( material.roughness, 1.0 );\n#ifdef IOR\n\tmaterial.ior = ior;\n\t#ifdef USE_SPECULAR\n\t\tfloat specularIntensityFactor = specularIntensity;\n\t\tvec3 specularColorFactor = specularColor;\n\t\t#ifdef USE_SPECULAR_COLORMAP\n\t\t\tspecularColorFactor *= texture2D( specularColorMap, vSpecularColorMapUv ).rgb;\n\t\t#endif\n\t\t#ifdef USE_SPECULAR_INTENSITYMAP\n\t\t\tspecularIntensityFactor *= texture2D( specularIntensityMap, vSpecularIntensityMapUv ).a;\n\t\t#endif\n\t\tmaterial.specularF90 = mix( specularIntensityFactor, 1.0, metalnessFactor );\n\t#else\n\t\tfloat specularIntensityFactor = 1.0;\n\t\tvec3 specularColorFactor = vec3( 1.0 );\n\t\tmaterial.specularF90 = 1.0;\n\t#endif\n\tmaterial.specularColor = mix( min( pow2( ( material.ior - 1.0 ) / ( material.ior + 1.0 ) ) * specularColorFactor, vec3( 1.0 ) ) * specularIntensityFactor, diffuseColor.rgb, metalnessFactor );\n#else\n\tmaterial.specularColor = mix( vec3( 0.04 ), diffuseColor.rgb, metalnessFactor );\n\tmaterial.specularF90 = 1.0;\n#endif\n#ifdef USE_CLEARCOAT\n\tmaterial.clearcoat = clearcoat;\n\tmaterial.clearcoatRoughness = clearcoatRoughness;\n\tmaterial.clearcoatF0 = vec3( 0.04 );\n\tmaterial.clearcoatF90 = 1.0;\n\t#ifdef USE_CLEARCOATMAP\n\t\tmaterial.clearcoat *= texture2D( clearcoatMap, vClearcoatMapUv ).x;\n\t#endif\n\t#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\t\tmaterial.clearcoatRoughness *= texture2D( clearcoatRoughnessMap, vClearcoatRoughnessMapUv ).y;\n\t#endif\n\tmaterial.clearcoat = saturate( material.clearcoat );\tmaterial.clearcoatRoughness = max( material.clearcoatRoughness, 0.0525 );\n\tmaterial.clearcoatRoughness += geometryRoughness;\n\tmaterial.clearcoatRoughness = min( material.clearcoatRoughness, 1.0 );\n#endif\n#ifdef USE_DISPERSION\n\tmaterial.dispersion = dispersion;\n#endif\n#ifdef USE_IRIDESCENCE\n\tmaterial.iridescence = iridescence;\n\tmaterial.iridescenceIOR = iridescenceIOR;\n\t#ifdef USE_IRIDESCENCEMAP\n\t\tmaterial.iridescence *= texture2D( iridescenceMap, vIridescenceMapUv ).r;\n\t#endif\n\t#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\t\tmaterial.iridescenceThickness = (iridescenceThicknessMaximum - iridescenceThicknessMinimum) * texture2D( iridescenceThicknessMap, vIridescenceThicknessMapUv ).g + iridescenceThicknessMinimum;\n\t#else\n\t\tmaterial.iridescenceThickness = iridescenceThicknessMaximum;\n\t#endif\n#endif\n#ifdef USE_SHEEN\n\tmaterial.sheenColor = sheenColor;\n\t#ifdef USE_SHEEN_COLORMAP\n\t\tmaterial.sheenColor *= texture2D( sheenColorMap, vSheenColorMapUv ).rgb;\n\t#endif\n\tmaterial.sheenRoughness = clamp( sheenRoughness, 0.07, 1.0 );\n\t#ifdef USE_SHEEN_ROUGHNESSMAP\n\t\tmaterial.sheenRoughness *= texture2D( sheenRoughnessMap, vSheenRoughnessMapUv ).a;\n\t#endif\n#endif\n#ifdef USE_ANISOTROPY\n\t#ifdef USE_ANISOTROPYMAP\n\t\tmat2 anisotropyMat = mat2( anisotropyVector.x, anisotropyVector.y, - anisotropyVector.y, anisotropyVector.x );\n\t\tvec3 anisotropyPolar = texture2D( anisotropyMap, vAnisotropyMapUv ).rgb;\n\t\tvec2 anisotropyV = anisotropyMat * normalize( 2.0 * anisotropyPolar.rg - vec2( 1.0 ) ) * anisotropyPolar.b;\n\t#else\n\t\tvec2 anisotropyV = anisotropyVector;\n\t#endif\n\tmaterial.anisotropy = length( anisotropyV );\n\tif( material.anisotropy == 0.0 ) {\n\t\tanisotropyV = vec2( 1.0, 0.0 );\n\t} else {\n\t\tanisotropyV /= material.anisotropy;\n\t\tmaterial.anisotropy = saturate( material.anisotropy );\n\t}\n\tmaterial.alphaT = mix( pow2( material.roughness ), 1.0, pow2( material.anisotropy ) );\n\tmaterial.anisotropyT = tbn[ 0 ] * anisotropyV.x + tbn[ 1 ] * anisotropyV.y;\n\tmaterial.anisotropyB = tbn[ 1 ] * anisotropyV.x - tbn[ 0 ] * anisotropyV.y;\n#endif";
+
+var lights_physical_pars_fragment = "struct PhysicalMaterial {\n\tvec3 diffuseColor;\n\tfloat roughness;\n\tvec3 specularColor;\n\tfloat specularF90;\n\tfloat dispersion;\n\t#ifdef USE_CLEARCOAT\n\t\tfloat clearcoat;\n\t\tfloat clearcoatRoughness;\n\t\tvec3 clearcoatF0;\n\t\tfloat clearcoatF90;\n\t#endif\n\t#ifdef USE_IRIDESCENCE\n\t\tfloat iridescence;\n\t\tfloat iridescenceIOR;\n\t\tfloat iridescenceThickness;\n\t\tvec3 iridescenceFresnel;\n\t\tvec3 iridescenceF0;\n\t#endif\n\t#ifdef USE_SHEEN\n\t\tvec3 sheenColor;\n\t\tfloat sheenRoughness;\n\t#endif\n\t#ifdef IOR\n\t\tfloat ior;\n\t#endif\n\t#ifdef USE_TRANSMISSION\n\t\tfloat transmission;\n\t\tfloat transmissionAlpha;\n\t\tfloat thickness;\n\t\tfloat attenuationDistance;\n\t\tvec3 attenuationColor;\n\t#endif\n\t#ifdef USE_ANISOTROPY\n\t\tfloat anisotropy;\n\t\tfloat alphaT;\n\t\tvec3 anisotropyT;\n\t\tvec3 anisotropyB;\n\t#endif\n};\nvec3 clearcoatSpecularDirect = vec3( 0.0 );\nvec3 clearcoatSpecularIndirect = vec3( 0.0 );\nvec3 sheenSpecularDirect = vec3( 0.0 );\nvec3 sheenSpecularIndirect = vec3(0.0 );\nvec3 Schlick_to_F0( const in vec3 f, const in float f90, const in float dotVH ) {\n    float x = clamp( 1.0 - dotVH, 0.0, 1.0 );\n    float x2 = x * x;\n    float x5 = clamp( x * x2 * x2, 0.0, 0.9999 );\n    return ( f - vec3( f90 ) * x5 ) / ( 1.0 - x5 );\n}\nfloat V_GGX_SmithCorrelated( const in float alpha, const in float dotNL, const in float dotNV ) {\n\tfloat a2 = pow2( alpha );\n\tfloat gv = dotNL * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNV ) );\n\tfloat gl = dotNV * sqrt( a2 + ( 1.0 - a2 ) * pow2( dotNL ) );\n\treturn 0.5 / max( gv + gl, EPSILON );\n}\nfloat D_GGX( const in float alpha, const in float dotNH ) {\n\tfloat a2 = pow2( alpha );\n\tfloat denom = pow2( dotNH ) * ( a2 - 1.0 ) + 1.0;\n\treturn RECIPROCAL_PI * a2 / pow2( denom );\n}\n#ifdef USE_ANISOTROPY\n\tfloat V_GGX_SmithCorrelated_Anisotropic( const in float alphaT, const in float alphaB, const in float dotTV, const in float dotBV, const in float dotTL, const in float dotBL, const in float dotNV, const in float dotNL ) {\n\t\tfloat gv = dotNL * length( vec3( alphaT * dotTV, alphaB * dotBV, dotNV ) );\n\t\tfloat gl = dotNV * length( vec3( alphaT * dotTL, alphaB * dotBL, dotNL ) );\n\t\tfloat v = 0.5 / ( gv + gl );\n\t\treturn saturate(v);\n\t}\n\tfloat D_GGX_Anisotropic( const in float alphaT, const in float alphaB, const in float dotNH, const in float dotTH, const in float dotBH ) {\n\t\tfloat a2 = alphaT * alphaB;\n\t\thighp vec3 v = vec3( alphaB * dotTH, alphaT * dotBH, a2 * dotNH );\n\t\thighp float v2 = dot( v, v );\n\t\tfloat w2 = a2 / v2;\n\t\treturn RECIPROCAL_PI * a2 * pow2 ( w2 );\n\t}\n#endif\n#ifdef USE_CLEARCOAT\n\tvec3 BRDF_GGX_Clearcoat( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in PhysicalMaterial material) {\n\t\tvec3 f0 = material.clearcoatF0;\n\t\tfloat f90 = material.clearcoatF90;\n\t\tfloat roughness = material.clearcoatRoughness;\n\t\tfloat alpha = pow2( roughness );\n\t\tvec3 halfDir = normalize( lightDir + viewDir );\n\t\tfloat dotNL = saturate( dot( normal, lightDir ) );\n\t\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\t\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\t\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\n\t\tvec3 F = F_Schlick( f0, f90, dotVH );\n\t\tfloat V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\t\tfloat D = D_GGX( alpha, dotNH );\n\t\treturn F * ( V * D );\n\t}\n#endif\nvec3 BRDF_GGX( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, const in PhysicalMaterial material ) {\n\tvec3 f0 = material.specularColor;\n\tfloat f90 = material.specularF90;\n\tfloat roughness = material.roughness;\n\tfloat alpha = pow2( roughness );\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNL = saturate( dot( normal, lightDir ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat dotVH = saturate( dot( viewDir, halfDir ) );\n\tvec3 F = F_Schlick( f0, f90, dotVH );\n\t#ifdef USE_IRIDESCENCE\n\t\tF = mix( F, material.iridescenceFresnel, material.iridescence );\n\t#endif\n\t#ifdef USE_ANISOTROPY\n\t\tfloat dotTL = dot( material.anisotropyT, lightDir );\n\t\tfloat dotTV = dot( material.anisotropyT, viewDir );\n\t\tfloat dotTH = dot( material.anisotropyT, halfDir );\n\t\tfloat dotBL = dot( material.anisotropyB, lightDir );\n\t\tfloat dotBV = dot( material.anisotropyB, viewDir );\n\t\tfloat dotBH = dot( material.anisotropyB, halfDir );\n\t\tfloat V = V_GGX_SmithCorrelated_Anisotropic( material.alphaT, alpha, dotTV, dotBV, dotTL, dotBL, dotNV, dotNL );\n\t\tfloat D = D_GGX_Anisotropic( material.alphaT, alpha, dotNH, dotTH, dotBH );\n\t#else\n\t\tfloat V = V_GGX_SmithCorrelated( alpha, dotNL, dotNV );\n\t\tfloat D = D_GGX( alpha, dotNH );\n\t#endif\n\treturn F * ( V * D );\n}\nvec2 LTC_Uv( const in vec3 N, const in vec3 V, const in float roughness ) {\n\tconst float LUT_SIZE = 64.0;\n\tconst float LUT_SCALE = ( LUT_SIZE - 1.0 ) / LUT_SIZE;\n\tconst float LUT_BIAS = 0.5 / LUT_SIZE;\n\tfloat dotNV = saturate( dot( N, V ) );\n\tvec2 uv = vec2( roughness, sqrt( 1.0 - dotNV ) );\n\tuv = uv * LUT_SCALE + LUT_BIAS;\n\treturn uv;\n}\nfloat LTC_ClippedSphereFormFactor( const in vec3 f ) {\n\tfloat l = length( f );\n\treturn max( ( l * l + f.z ) / ( l + 1.0 ), 0.0 );\n}\nvec3 LTC_EdgeVectorFormFactor( const in vec3 v1, const in vec3 v2 ) {\n\tfloat x = dot( v1, v2 );\n\tfloat y = abs( x );\n\tfloat a = 0.8543985 + ( 0.4965155 + 0.0145206 * y ) * y;\n\tfloat b = 3.4175940 + ( 4.1616724 + y ) * y;\n\tfloat v = a / b;\n\tfloat theta_sintheta = ( x > 0.0 ) ? v : 0.5 * inversesqrt( max( 1.0 - x * x, 1e-7 ) ) - v;\n\treturn cross( v1, v2 ) * theta_sintheta;\n}\nvec3 LTC_Evaluate( const in vec3 N, const in vec3 V, const in vec3 P, const in mat3 mInv, const in vec3 rectCoords[ 4 ] ) {\n\tvec3 v1 = rectCoords[ 1 ] - rectCoords[ 0 ];\n\tvec3 v2 = rectCoords[ 3 ] - rectCoords[ 0 ];\n\tvec3 lightNormal = cross( v1, v2 );\n\tif( dot( lightNormal, P - rectCoords[ 0 ] ) < 0.0 ) return vec3( 0.0 );\n\tvec3 T1, T2;\n\tT1 = normalize( V - N * dot( V, N ) );\n\tT2 = - cross( N, T1 );\n\tmat3 mat = mInv * transposeMat3( mat3( T1, T2, N ) );\n\tvec3 coords[ 4 ];\n\tcoords[ 0 ] = mat * ( rectCoords[ 0 ] - P );\n\tcoords[ 1 ] = mat * ( rectCoords[ 1 ] - P );\n\tcoords[ 2 ] = mat * ( rectCoords[ 2 ] - P );\n\tcoords[ 3 ] = mat * ( rectCoords[ 3 ] - P );\n\tcoords[ 0 ] = normalize( coords[ 0 ] );\n\tcoords[ 1 ] = normalize( coords[ 1 ] );\n\tcoords[ 2 ] = normalize( coords[ 2 ] );\n\tcoords[ 3 ] = normalize( coords[ 3 ] );\n\tvec3 vectorFormFactor = vec3( 0.0 );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 0 ], coords[ 1 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 1 ], coords[ 2 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 2 ], coords[ 3 ] );\n\tvectorFormFactor += LTC_EdgeVectorFormFactor( coords[ 3 ], coords[ 0 ] );\n\tfloat result = LTC_ClippedSphereFormFactor( vectorFormFactor );\n\treturn vec3( result );\n}\n#if defined( USE_SHEEN )\nfloat D_Charlie( float roughness, float dotNH ) {\n\tfloat alpha = pow2( roughness );\n\tfloat invAlpha = 1.0 / alpha;\n\tfloat cos2h = dotNH * dotNH;\n\tfloat sin2h = max( 1.0 - cos2h, 0.0078125 );\n\treturn ( 2.0 + invAlpha ) * pow( sin2h, invAlpha * 0.5 ) / ( 2.0 * PI );\n}\nfloat V_Neubelt( float dotNV, float dotNL ) {\n\treturn saturate( 1.0 / ( 4.0 * ( dotNL + dotNV - dotNL * dotNV ) ) );\n}\nvec3 BRDF_Sheen( const in vec3 lightDir, const in vec3 viewDir, const in vec3 normal, vec3 sheenColor, const in float sheenRoughness ) {\n\tvec3 halfDir = normalize( lightDir + viewDir );\n\tfloat dotNL = saturate( dot( normal, lightDir ) );\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat dotNH = saturate( dot( normal, halfDir ) );\n\tfloat D = D_Charlie( sheenRoughness, dotNH );\n\tfloat V = V_Neubelt( dotNV, dotNL );\n\treturn sheenColor * ( D * V );\n}\n#endif\nfloat IBLSheenBRDF( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tfloat r2 = roughness * roughness;\n\tfloat a = roughness < 0.25 ? -339.2 * r2 + 161.4 * roughness - 25.9 : -8.48 * r2 + 14.3 * roughness - 9.95;\n\tfloat b = roughness < 0.25 ? 44.0 * r2 - 23.7 * roughness + 3.26 : 1.97 * r2 - 3.27 * roughness + 0.72;\n\tfloat DG = exp( a * dotNV + b ) + ( roughness < 0.25 ? 0.0 : 0.1 * ( roughness - 0.25 ) );\n\treturn saturate( DG * RECIPROCAL_PI );\n}\nvec2 DFGApprox( const in vec3 normal, const in vec3 viewDir, const in float roughness ) {\n\tfloat dotNV = saturate( dot( normal, viewDir ) );\n\tconst vec4 c0 = vec4( - 1, - 0.0275, - 0.572, 0.022 );\n\tconst vec4 c1 = vec4( 1, 0.0425, 1.04, - 0.04 );\n\tvec4 r = roughness * c0 + c1;\n\tfloat a004 = min( r.x * r.x, exp2( - 9.28 * dotNV ) ) * r.x + r.y;\n\tvec2 fab = vec2( - 1.04, 1.04 ) * a004 + r.zw;\n\treturn fab;\n}\nvec3 EnvironmentBRDF( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness ) {\n\tvec2 fab = DFGApprox( normal, viewDir, roughness );\n\treturn specularColor * fab.x + specularF90 * fab.y;\n}\n#ifdef USE_IRIDESCENCE\nvoid computeMultiscatteringIridescence( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float iridescence, const in vec3 iridescenceF0, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n#else\nvoid computeMultiscattering( const in vec3 normal, const in vec3 viewDir, const in vec3 specularColor, const in float specularF90, const in float roughness, inout vec3 singleScatter, inout vec3 multiScatter ) {\n#endif\n\tvec2 fab = DFGApprox( normal, viewDir, roughness );\n\t#ifdef USE_IRIDESCENCE\n\t\tvec3 Fr = mix( specularColor, iridescenceF0, iridescence );\n\t#else\n\t\tvec3 Fr = specularColor;\n\t#endif\n\tvec3 FssEss = Fr * fab.x + specularF90 * fab.y;\n\tfloat Ess = fab.x + fab.y;\n\tfloat Ems = 1.0 - Ess;\n\tvec3 Favg = Fr + ( 1.0 - Fr ) * 0.047619;\tvec3 Fms = FssEss * Favg / ( 1.0 - Ems * Favg );\n\tsingleScatter += FssEss;\n\tmultiScatter += Fms * Ems;\n}\n#if NUM_RECT_AREA_LIGHTS > 0\n\tvoid RE_Direct_RectArea_Physical( const in RectAreaLight rectAreaLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\t\tvec3 normal = geometryNormal;\n\t\tvec3 viewDir = geometryViewDir;\n\t\tvec3 position = geometryPosition;\n\t\tvec3 lightPos = rectAreaLight.position;\n\t\tvec3 halfWidth = rectAreaLight.halfWidth;\n\t\tvec3 halfHeight = rectAreaLight.halfHeight;\n\t\tvec3 lightColor = rectAreaLight.color;\n\t\tfloat roughness = material.roughness;\n\t\tvec3 rectCoords[ 4 ];\n\t\trectCoords[ 0 ] = lightPos + halfWidth - halfHeight;\t\trectCoords[ 1 ] = lightPos - halfWidth - halfHeight;\n\t\trectCoords[ 2 ] = lightPos - halfWidth + halfHeight;\n\t\trectCoords[ 3 ] = lightPos + halfWidth + halfHeight;\n\t\tvec2 uv = LTC_Uv( normal, viewDir, roughness );\n\t\tvec4 t1 = texture2D( ltc_1, uv );\n\t\tvec4 t2 = texture2D( ltc_2, uv );\n\t\tmat3 mInv = mat3(\n\t\t\tvec3( t1.x, 0, t1.y ),\n\t\t\tvec3(    0, 1,    0 ),\n\t\t\tvec3( t1.z, 0, t1.w )\n\t\t);\n\t\tvec3 fresnel = ( material.specularColor * t2.x + ( vec3( 1.0 ) - material.specularColor ) * t2.y );\n\t\treflectedLight.directSpecular += lightColor * fresnel * LTC_Evaluate( normal, viewDir, position, mInv, rectCoords );\n\t\treflectedLight.directDiffuse += lightColor * material.diffuseColor * LTC_Evaluate( normal, viewDir, position, mat3( 1.0 ), rectCoords );\n\t}\n#endif\nvoid RE_Direct_Physical( const in IncidentLight directLight, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\tfloat dotNL = saturate( dot( geometryNormal, directLight.direction ) );\n\tvec3 irradiance = dotNL * directLight.color;\n\t#ifdef USE_CLEARCOAT\n\t\tfloat dotNLcc = saturate( dot( geometryClearcoatNormal, directLight.direction ) );\n\t\tvec3 ccIrradiance = dotNLcc * directLight.color;\n\t\tclearcoatSpecularDirect += ccIrradiance * BRDF_GGX_Clearcoat( directLight.direction, geometryViewDir, geometryClearcoatNormal, material );\n\t#endif\n\t#ifdef USE_SHEEN\n\t\tsheenSpecularDirect += irradiance * BRDF_Sheen( directLight.direction, geometryViewDir, geometryNormal, material.sheenColor, material.sheenRoughness );\n\t#endif\n\treflectedLight.directSpecular += irradiance * BRDF_GGX( directLight.direction, geometryViewDir, geometryNormal, material );\n\treflectedLight.directDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectDiffuse_Physical( const in vec3 irradiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight ) {\n\treflectedLight.indirectDiffuse += irradiance * BRDF_Lambert( material.diffuseColor );\n}\nvoid RE_IndirectSpecular_Physical( const in vec3 radiance, const in vec3 irradiance, const in vec3 clearcoatRadiance, const in vec3 geometryPosition, const in vec3 geometryNormal, const in vec3 geometryViewDir, const in vec3 geometryClearcoatNormal, const in PhysicalMaterial material, inout ReflectedLight reflectedLight) {\n\t#ifdef USE_CLEARCOAT\n\t\tclearcoatSpecularIndirect += clearcoatRadiance * EnvironmentBRDF( geometryClearcoatNormal, geometryViewDir, material.clearcoatF0, material.clearcoatF90, material.clearcoatRoughness );\n\t#endif\n\t#ifdef USE_SHEEN\n\t\tsheenSpecularIndirect += irradiance * material.sheenColor * IBLSheenBRDF( geometryNormal, geometryViewDir, material.sheenRoughness );\n\t#endif\n\tvec3 singleScattering = vec3( 0.0 );\n\tvec3 multiScattering = vec3( 0.0 );\n\tvec3 cosineWeightedIrradiance = irradiance * RECIPROCAL_PI;\n\t#ifdef USE_IRIDESCENCE\n\t\tcomputeMultiscatteringIridescence( geometryNormal, geometryViewDir, material.specularColor, material.specularF90, material.iridescence, material.iridescenceFresnel, material.roughness, singleScattering, multiScattering );\n\t#else\n\t\tcomputeMultiscattering( geometryNormal, geometryViewDir, material.specularColor, material.specularF90, material.roughness, singleScattering, multiScattering );\n\t#endif\n\tvec3 totalScattering = singleScattering + multiScattering;\n\tvec3 diffuse = material.diffuseColor * ( 1.0 - max( max( totalScattering.r, totalScattering.g ), totalScattering.b ) );\n\treflectedLight.indirectSpecular += radiance * singleScattering;\n\treflectedLight.indirectSpecular += multiScattering * cosineWeightedIrradiance;\n\treflectedLight.indirectDiffuse += diffuse * cosineWeightedIrradiance;\n}\n#define RE_Direct\t\t\t\tRE_Direct_Physical\n#define RE_Direct_RectArea\t\tRE_Direct_RectArea_Physical\n#define RE_IndirectDiffuse\t\tRE_IndirectDiffuse_Physical\n#define RE_IndirectSpecular\t\tRE_IndirectSpecular_Physical\nfloat computeSpecularOcclusion( const in float dotNV, const in float ambientOcclusion, const in float roughness ) {\n\treturn saturate( pow( dotNV + ambientOcclusion, exp2( - 16.0 * roughness - 1.0 ) ) - 1.0 + ambientOcclusion );\n}";
+
+var lights_fragment_begin = "\nvec3 geometryPosition = - vViewPosition;\nvec3 geometryNormal = normal;\nvec3 geometryViewDir = ( isOrthographic ) ? vec3( 0, 0, 1 ) : normalize( vViewPosition );\nvec3 geometryClearcoatNormal = vec3( 0.0 );\n#ifdef USE_CLEARCOAT\n\tgeometryClearcoatNormal = clearcoatNormal;\n#endif\n#ifdef USE_IRIDESCENCE\n\tfloat dotNVi = saturate( dot( normal, geometryViewDir ) );\n\tif ( material.iridescenceThickness == 0.0 ) {\n\t\tmaterial.iridescence = 0.0;\n\t} else {\n\t\tmaterial.iridescence = saturate( material.iridescence );\n\t}\n\tif ( material.iridescence > 0.0 ) {\n\t\tmaterial.iridescenceFresnel = evalIridescence( 1.0, material.iridescenceIOR, dotNVi, material.iridescenceThickness, material.specularColor );\n\t\tmaterial.iridescenceF0 = Schlick_to_F0( material.iridescenceFresnel, 1.0, dotNVi );\n\t}\n#endif\nIncidentLight directLight;\n#if ( NUM_POINT_LIGHTS > 0 ) && defined( RE_Direct )\n\tPointLight pointLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHTS; i ++ ) {\n\t\tpointLight = pointLights[ i ];\n\t\tgetPointLightInfo( pointLight, geometryPosition, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_POINT_LIGHT_SHADOWS )\n\t\tpointLightShadow = pointLightShadows[ i ];\n\t\tdirectLight.color *= ( directLight.visible && receiveShadow ) ? getPointShadow( pointShadowMap[ i ], pointLightShadow.shadowMapSize, pointLightShadow.shadowIntensity, pointLightShadow.shadowBias, pointLightShadow.shadowRadius, vPointShadowCoord[ i ], pointLightShadow.shadowCameraNear, pointLightShadow.shadowCameraFar ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_SPOT_LIGHTS > 0 ) && defined( RE_Direct )\n\tSpotLight spotLight;\n\tvec4 spotColor;\n\tvec3 spotLightCoord;\n\tbool inSpotLightMap;\n\t#if defined( USE_SHADOWMAP ) && NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHTS; i ++ ) {\n\t\tspotLight = spotLights[ i ];\n\t\tgetSpotLightInfo( spotLight, geometryPosition, directLight );\n\t\t#if ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )\n\t\t#define SPOT_LIGHT_MAP_INDEX UNROLLED_LOOP_INDEX\n\t\t#elif ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\t#define SPOT_LIGHT_MAP_INDEX NUM_SPOT_LIGHT_MAPS\n\t\t#else\n\t\t#define SPOT_LIGHT_MAP_INDEX ( UNROLLED_LOOP_INDEX - NUM_SPOT_LIGHT_SHADOWS + NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS )\n\t\t#endif\n\t\t#if ( SPOT_LIGHT_MAP_INDEX < NUM_SPOT_LIGHT_MAPS )\n\t\t\tspotLightCoord = vSpotLightCoord[ i ].xyz / vSpotLightCoord[ i ].w;\n\t\t\tinSpotLightMap = all( lessThan( abs( spotLightCoord * 2. - 1. ), vec3( 1.0 ) ) );\n\t\t\tspotColor = texture2D( spotLightMap[ SPOT_LIGHT_MAP_INDEX ], spotLightCoord.xy );\n\t\t\tdirectLight.color = inSpotLightMap ? directLight.color * spotColor.rgb : directLight.color;\n\t\t#endif\n\t\t#undef SPOT_LIGHT_MAP_INDEX\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\tspotLightShadow = spotLightShadows[ i ];\n\t\tdirectLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( spotShadowMap[ i ], spotLightShadow.shadowMapSize, spotLightShadow.shadowIntensity, spotLightShadow.shadowBias, spotLightShadow.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_DIR_LIGHTS > 0 ) && defined( RE_Direct )\n\tDirectionalLight directionalLight;\n\t#if defined( USE_SHADOWMAP ) && NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLightShadow;\n\t#endif\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHTS; i ++ ) {\n\t\tdirectionalLight = directionalLights[ i ];\n\t\tgetDirectionalLightInfo( directionalLight, directLight );\n\t\t#if defined( USE_SHADOWMAP ) && ( UNROLLED_LOOP_INDEX < NUM_DIR_LIGHT_SHADOWS )\n\t\tdirectionalLightShadow = directionalLightShadows[ i ];\n\t\tdirectLight.color *= ( directLight.visible && receiveShadow ) ? getShadow( directionalShadowMap[ i ], directionalLightShadow.shadowMapSize, directionalLightShadow.shadowIntensity, directionalLightShadow.shadowBias, directionalLightShadow.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t\t#endif\n\t\tRE_Direct( directLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if ( NUM_RECT_AREA_LIGHTS > 0 ) && defined( RE_Direct_RectArea )\n\tRectAreaLight rectAreaLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_RECT_AREA_LIGHTS; i ++ ) {\n\t\trectAreaLight = rectAreaLights[ i ];\n\t\tRE_Direct_RectArea( rectAreaLight, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n\t}\n\t#pragma unroll_loop_end\n#endif\n#if defined( RE_IndirectDiffuse )\n\tvec3 iblIrradiance = vec3( 0.0 );\n\tvec3 irradiance = getAmbientLightIrradiance( ambientLightColor );\n\t#if defined( USE_LIGHT_PROBES )\n\t\tirradiance += getLightProbeIrradiance( lightProbe, geometryNormal );\n\t#endif\n\t#if ( NUM_HEMI_LIGHTS > 0 )\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_HEMI_LIGHTS; i ++ ) {\n\t\t\tirradiance += getHemisphereLightIrradiance( hemisphereLights[ i ], geometryNormal );\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n#endif\n#if defined( RE_IndirectSpecular )\n\tvec3 radiance = vec3( 0.0 );\n\tvec3 clearcoatRadiance = vec3( 0.0 );\n#endif";
+
+var lights_fragment_maps = "#if defined( RE_IndirectDiffuse )\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel = texture2D( lightMap, vLightMapUv );\n\t\tvec3 lightMapIrradiance = lightMapTexel.rgb * lightMapIntensity;\n\t\tirradiance += lightMapIrradiance;\n\t#endif\n\t#if defined( USE_ENVMAP ) && defined( STANDARD ) && defined( ENVMAP_TYPE_CUBE_UV )\n\t\tiblIrradiance += getIBLIrradiance( geometryNormal );\n\t#endif\n#endif\n#if defined( USE_ENVMAP ) && defined( RE_IndirectSpecular )\n\t#ifdef USE_ANISOTROPY\n\t\tradiance += getIBLAnisotropyRadiance( geometryViewDir, geometryNormal, material.roughness, material.anisotropyB, material.anisotropy );\n\t#else\n\t\tradiance += getIBLRadiance( geometryViewDir, geometryNormal, material.roughness );\n\t#endif\n\t#ifdef USE_CLEARCOAT\n\t\tclearcoatRadiance += getIBLRadiance( geometryViewDir, geometryClearcoatNormal, material.clearcoatRoughness );\n\t#endif\n#endif";
+
+var lights_fragment_end = "#if defined( RE_IndirectDiffuse )\n\tRE_IndirectDiffuse( irradiance, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n#endif\n#if defined( RE_IndirectSpecular )\n\tRE_IndirectSpecular( radiance, iblIrradiance, clearcoatRadiance, geometryPosition, geometryNormal, geometryViewDir, geometryClearcoatNormal, material, reflectedLight );\n#endif";
+
+var logdepthbuf_fragment = "#if defined( USE_LOGDEPTHBUF )\n\tgl_FragDepth = vIsPerspective == 0.0 ? gl_FragCoord.z : log2( vFragDepth ) * logDepthBufFC * 0.5;\n#endif";
+
+var logdepthbuf_pars_fragment = "#if defined( USE_LOGDEPTHBUF )\n\tuniform float logDepthBufFC;\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";
+
+var logdepthbuf_pars_vertex = "#ifdef USE_LOGDEPTHBUF\n\tvarying float vFragDepth;\n\tvarying float vIsPerspective;\n#endif";
+
+var logdepthbuf_vertex = "#ifdef USE_LOGDEPTHBUF\n\tvFragDepth = 1.0 + gl_Position.w;\n\tvIsPerspective = float( isPerspectiveMatrix( projectionMatrix ) );\n#endif";
+
+var map_fragment = "#ifdef USE_MAP\n\tvec4 sampledDiffuseColor = texture2D( map, vMapUv );\n\t#ifdef DECODE_VIDEO_TEXTURE\n\t\tsampledDiffuseColor = vec4( mix( pow( sampledDiffuseColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), sampledDiffuseColor.rgb * 0.0773993808, vec3( lessThanEqual( sampledDiffuseColor.rgb, vec3( 0.04045 ) ) ) ), sampledDiffuseColor.w );\n\t\n\t#endif\n\tdiffuseColor *= sampledDiffuseColor;\n#endif";
+
+var map_pars_fragment = "#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif";
+
+var map_particle_fragment = "#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\t#if defined( USE_POINTS_UV )\n\t\tvec2 uv = vUv;\n\t#else\n\t\tvec2 uv = ( uvTransform * vec3( gl_PointCoord.x, 1.0 - gl_PointCoord.y, 1 ) ).xy;\n\t#endif\n#endif\n#ifdef USE_MAP\n\tdiffuseColor *= texture2D( map, uv );\n#endif\n#ifdef USE_ALPHAMAP\n\tdiffuseColor.a *= texture2D( alphaMap, uv ).g;\n#endif";
+
+var map_particle_pars_fragment = "#if defined( USE_POINTS_UV )\n\tvarying vec2 vUv;\n#else\n\t#if defined( USE_MAP ) || defined( USE_ALPHAMAP )\n\t\tuniform mat3 uvTransform;\n\t#endif\n#endif\n#ifdef USE_MAP\n\tuniform sampler2D map;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform sampler2D alphaMap;\n#endif";
+
+var metalnessmap_fragment = "float metalnessFactor = metalness;\n#ifdef USE_METALNESSMAP\n\tvec4 texelMetalness = texture2D( metalnessMap, vMetalnessMapUv );\n\tmetalnessFactor *= texelMetalness.b;\n#endif";
+
+var metalnessmap_pars_fragment = "#ifdef USE_METALNESSMAP\n\tuniform sampler2D metalnessMap;\n#endif";
+
+var morphinstance_vertex = "#ifdef USE_INSTANCING_MORPH\n\tfloat morphTargetInfluences[ MORPHTARGETS_COUNT ];\n\tfloat morphTargetBaseInfluence = texelFetch( morphTexture, ivec2( 0, gl_InstanceID ), 0 ).r;\n\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\tmorphTargetInfluences[i] =  texelFetch( morphTexture, ivec2( i + 1, gl_InstanceID ), 0 ).r;\n\t}\n#endif";
+
+var morphcolor_vertex = "#if defined( USE_MORPHCOLORS )\n\tvColor *= morphTargetBaseInfluence;\n\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\t#if defined( USE_COLOR_ALPHA )\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ) * morphTargetInfluences[ i ];\n\t\t#elif defined( USE_COLOR )\n\t\t\tif ( morphTargetInfluences[ i ] != 0.0 ) vColor += getMorph( gl_VertexID, i, 2 ).rgb * morphTargetInfluences[ i ];\n\t\t#endif\n\t}\n#endif";
+
+var morphnormal_vertex = "#ifdef USE_MORPHNORMALS\n\tobjectNormal *= morphTargetBaseInfluence;\n\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\tif ( morphTargetInfluences[ i ] != 0.0 ) objectNormal += getMorph( gl_VertexID, i, 1 ).xyz * morphTargetInfluences[ i ];\n\t}\n#endif";
+
+var morphtarget_pars_vertex = "#ifdef USE_MORPHTARGETS\n\t#ifndef USE_INSTANCING_MORPH\n\t\tuniform float morphTargetBaseInfluence;\n\t\tuniform float morphTargetInfluences[ MORPHTARGETS_COUNT ];\n\t#endif\n\tuniform sampler2DArray morphTargetsTexture;\n\tuniform ivec2 morphTargetsTextureSize;\n\tvec4 getMorph( const in int vertexIndex, const in int morphTargetIndex, const in int offset ) {\n\t\tint texelIndex = vertexIndex * MORPHTARGETS_TEXTURE_STRIDE + offset;\n\t\tint y = texelIndex / morphTargetsTextureSize.x;\n\t\tint x = texelIndex - y * morphTargetsTextureSize.x;\n\t\tivec3 morphUV = ivec3( x, y, morphTargetIndex );\n\t\treturn texelFetch( morphTargetsTexture, morphUV, 0 );\n\t}\n#endif";
+
+var morphtarget_vertex = "#ifdef USE_MORPHTARGETS\n\ttransformed *= morphTargetBaseInfluence;\n\tfor ( int i = 0; i < MORPHTARGETS_COUNT; i ++ ) {\n\t\tif ( morphTargetInfluences[ i ] != 0.0 ) transformed += getMorph( gl_VertexID, i, 0 ).xyz * morphTargetInfluences[ i ];\n\t}\n#endif";
+
+var normal_fragment_begin = "float faceDirection = gl_FrontFacing ? 1.0 : - 1.0;\n#ifdef FLAT_SHADED\n\tvec3 fdx = dFdx( vViewPosition );\n\tvec3 fdy = dFdy( vViewPosition );\n\tvec3 normal = normalize( cross( fdx, fdy ) );\n#else\n\tvec3 normal = normalize( vNormal );\n\t#ifdef DOUBLE_SIDED\n\t\tnormal *= faceDirection;\n\t#endif\n#endif\n#if defined( USE_NORMALMAP_TANGENTSPACE ) || defined( USE_CLEARCOAT_NORMALMAP ) || defined( USE_ANISOTROPY )\n\t#ifdef USE_TANGENT\n\t\tmat3 tbn = mat3( normalize( vTangent ), normalize( vBitangent ), normal );\n\t#else\n\t\tmat3 tbn = getTangentFrame( - vViewPosition, normal,\n\t\t#if defined( USE_NORMALMAP )\n\t\t\tvNormalMapUv\n\t\t#elif defined( USE_CLEARCOAT_NORMALMAP )\n\t\t\tvClearcoatNormalMapUv\n\t\t#else\n\t\t\tvUv\n\t\t#endif\n\t\t);\n\t#endif\n\t#if defined( DOUBLE_SIDED ) && ! defined( FLAT_SHADED )\n\t\ttbn[0] *= faceDirection;\n\t\ttbn[1] *= faceDirection;\n\t#endif\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\t#ifdef USE_TANGENT\n\t\tmat3 tbn2 = mat3( normalize( vTangent ), normalize( vBitangent ), normal );\n\t#else\n\t\tmat3 tbn2 = getTangentFrame( - vViewPosition, normal, vClearcoatNormalMapUv );\n\t#endif\n\t#if defined( DOUBLE_SIDED ) && ! defined( FLAT_SHADED )\n\t\ttbn2[0] *= faceDirection;\n\t\ttbn2[1] *= faceDirection;\n\t#endif\n#endif\nvec3 nonPerturbedNormal = normal;";
+
+var normal_fragment_maps = "#ifdef USE_NORMALMAP_OBJECTSPACE\n\tnormal = texture2D( normalMap, vNormalMapUv ).xyz * 2.0 - 1.0;\n\t#ifdef FLIP_SIDED\n\t\tnormal = - normal;\n\t#endif\n\t#ifdef DOUBLE_SIDED\n\t\tnormal = normal * faceDirection;\n\t#endif\n\tnormal = normalize( normalMatrix * normal );\n#elif defined( USE_NORMALMAP_TANGENTSPACE )\n\tvec3 mapN = texture2D( normalMap, vNormalMapUv ).xyz * 2.0 - 1.0;\n\tmapN.xy *= normalScale;\n\tnormal = normalize( tbn * mapN );\n#elif defined( USE_BUMPMAP )\n\tnormal = perturbNormalArb( - vViewPosition, normal, dHdxy_fwd(), faceDirection );\n#endif";
+
+var normal_pars_fragment = "#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif";
+
+var normal_pars_vertex = "#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n\t#ifdef USE_TANGENT\n\t\tvarying vec3 vTangent;\n\t\tvarying vec3 vBitangent;\n\t#endif\n#endif";
+
+var normal_vertex = "#ifndef FLAT_SHADED\n\tvNormal = normalize( transformedNormal );\n\t#ifdef USE_TANGENT\n\t\tvTangent = normalize( transformedTangent );\n\t\tvBitangent = normalize( cross( vNormal, vTangent ) * tangent.w );\n\t#endif\n#endif";
+
+var normalmap_pars_fragment = "#ifdef USE_NORMALMAP\n\tuniform sampler2D normalMap;\n\tuniform vec2 normalScale;\n#endif\n#ifdef USE_NORMALMAP_OBJECTSPACE\n\tuniform mat3 normalMatrix;\n#endif\n#if ! defined ( USE_TANGENT ) && ( defined ( USE_NORMALMAP_TANGENTSPACE ) || defined ( USE_CLEARCOAT_NORMALMAP ) || defined( USE_ANISOTROPY ) )\n\tmat3 getTangentFrame( vec3 eye_pos, vec3 surf_norm, vec2 uv ) {\n\t\tvec3 q0 = dFdx( eye_pos.xyz );\n\t\tvec3 q1 = dFdy( eye_pos.xyz );\n\t\tvec2 st0 = dFdx( uv.st );\n\t\tvec2 st1 = dFdy( uv.st );\n\t\tvec3 N = surf_norm;\n\t\tvec3 q1perp = cross( q1, N );\n\t\tvec3 q0perp = cross( N, q0 );\n\t\tvec3 T = q1perp * st0.x + q0perp * st1.x;\n\t\tvec3 B = q1perp * st0.y + q0perp * st1.y;\n\t\tfloat det = max( dot( T, T ), dot( B, B ) );\n\t\tfloat scale = ( det == 0.0 ) ? 0.0 : inversesqrt( det );\n\t\treturn mat3( T * scale, B * scale, N );\n\t}\n#endif";
+
+var clearcoat_normal_fragment_begin = "#ifdef USE_CLEARCOAT\n\tvec3 clearcoatNormal = nonPerturbedNormal;\n#endif";
+
+var clearcoat_normal_fragment_maps = "#ifdef USE_CLEARCOAT_NORMALMAP\n\tvec3 clearcoatMapN = texture2D( clearcoatNormalMap, vClearcoatNormalMapUv ).xyz * 2.0 - 1.0;\n\tclearcoatMapN.xy *= clearcoatNormalScale;\n\tclearcoatNormal = normalize( tbn2 * clearcoatMapN );\n#endif";
+
+var clearcoat_pars_fragment = "#ifdef USE_CLEARCOATMAP\n\tuniform sampler2D clearcoatMap;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform sampler2D clearcoatNormalMap;\n\tuniform vec2 clearcoatNormalScale;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform sampler2D clearcoatRoughnessMap;\n#endif";
+
+var iridescence_pars_fragment = "#ifdef USE_IRIDESCENCEMAP\n\tuniform sampler2D iridescenceMap;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\tuniform sampler2D iridescenceThicknessMap;\n#endif";
+
+var opaque_fragment = "#ifdef OPAQUE\ndiffuseColor.a = 1.0;\n#endif\n#ifdef USE_TRANSMISSION\ndiffuseColor.a *= material.transmissionAlpha;\n#endif\ngl_FragColor = vec4( outgoingLight, diffuseColor.a );";
+
+var packing = "vec3 packNormalToRGB( const in vec3 normal ) {\n\treturn normalize( normal ) * 0.5 + 0.5;\n}\nvec3 unpackRGBToNormal( const in vec3 rgb ) {\n\treturn 2.0 * rgb.xyz - 1.0;\n}\nconst float PackUpscale = 256. / 255.;const float UnpackDownscale = 255. / 256.;const float ShiftRight8 = 1. / 256.;\nconst float Inv255 = 1. / 255.;\nconst vec4 PackFactors = vec4( 1.0, 256.0, 256.0 * 256.0, 256.0 * 256.0 * 256.0 );\nconst vec2 UnpackFactors2 = vec2( UnpackDownscale, 1.0 / PackFactors.g );\nconst vec3 UnpackFactors3 = vec3( UnpackDownscale / PackFactors.rg, 1.0 / PackFactors.b );\nconst vec4 UnpackFactors4 = vec4( UnpackDownscale / PackFactors.rgb, 1.0 / PackFactors.a );\nvec4 packDepthToRGBA( const in float v ) {\n\tif( v <= 0.0 )\n\t\treturn vec4( 0., 0., 0., 0. );\n\tif( v >= 1.0 )\n\t\treturn vec4( 1., 1., 1., 1. );\n\tfloat vuf;\n\tfloat af = modf( v * PackFactors.a, vuf );\n\tfloat bf = modf( vuf * ShiftRight8, vuf );\n\tfloat gf = modf( vuf * ShiftRight8, vuf );\n\treturn vec4( vuf * Inv255, gf * PackUpscale, bf * PackUpscale, af );\n}\nvec3 packDepthToRGB( const in float v ) {\n\tif( v <= 0.0 )\n\t\treturn vec3( 0., 0., 0. );\n\tif( v >= 1.0 )\n\t\treturn vec3( 1., 1., 1. );\n\tfloat vuf;\n\tfloat bf = modf( v * PackFactors.b, vuf );\n\tfloat gf = modf( vuf * ShiftRight8, vuf );\n\treturn vec3( vuf * Inv255, gf * PackUpscale, bf );\n}\nvec2 packDepthToRG( const in float v ) {\n\tif( v <= 0.0 )\n\t\treturn vec2( 0., 0. );\n\tif( v >= 1.0 )\n\t\treturn vec2( 1., 1. );\n\tfloat vuf;\n\tfloat gf = modf( v * 256., vuf );\n\treturn vec2( vuf * Inv255, gf );\n}\nfloat unpackRGBAToDepth( const in vec4 v ) {\n\treturn dot( v, UnpackFactors4 );\n}\nfloat unpackRGBToDepth( const in vec3 v ) {\n\treturn dot( v, UnpackFactors3 );\n}\nfloat unpackRGToDepth( const in vec2 v ) {\n\treturn v.r * UnpackFactors2.r + v.g * UnpackFactors2.g;\n}\nvec4 pack2HalfToRGBA( const in vec2 v ) {\n\tvec4 r = vec4( v.x, fract( v.x * 255.0 ), v.y, fract( v.y * 255.0 ) );\n\treturn vec4( r.x - r.y / 255.0, r.y, r.z - r.w / 255.0, r.w );\n}\nvec2 unpackRGBATo2Half( const in vec4 v ) {\n\treturn vec2( v.x + ( v.y / 255.0 ), v.z + ( v.w / 255.0 ) );\n}\nfloat viewZToOrthographicDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( viewZ + near ) / ( near - far );\n}\nfloat orthographicDepthToViewZ( const in float depth, const in float near, const in float far ) {\n\treturn depth * ( near - far ) - near;\n}\nfloat viewZToPerspectiveDepth( const in float viewZ, const in float near, const in float far ) {\n\treturn ( ( near + viewZ ) * far ) / ( ( far - near ) * viewZ );\n}\nfloat perspectiveDepthToViewZ( const in float depth, const in float near, const in float far ) {\n\treturn ( near * far ) / ( ( far - near ) * depth - far );\n}";
+
+var premultiplied_alpha_fragment = "#ifdef PREMULTIPLIED_ALPHA\n\tgl_FragColor.rgb *= gl_FragColor.a;\n#endif";
+
+var project_vertex = "vec4 mvPosition = vec4( transformed, 1.0 );\n#ifdef USE_BATCHING\n\tmvPosition = batchingMatrix * mvPosition;\n#endif\n#ifdef USE_INSTANCING\n\tmvPosition = instanceMatrix * mvPosition;\n#endif\nmvPosition = modelViewMatrix * mvPosition;\ngl_Position = projectionMatrix * mvPosition;";
+
+var dithering_fragment = "#ifdef DITHERING\n\tgl_FragColor.rgb = dithering( gl_FragColor.rgb );\n#endif";
+
+var dithering_pars_fragment = "#ifdef DITHERING\n\tvec3 dithering( vec3 color ) {\n\t\tfloat grid_position = rand( gl_FragCoord.xy );\n\t\tvec3 dither_shift_RGB = vec3( 0.25 / 255.0, -0.25 / 255.0, 0.25 / 255.0 );\n\t\tdither_shift_RGB = mix( 2.0 * dither_shift_RGB, -2.0 * dither_shift_RGB, grid_position );\n\t\treturn color + dither_shift_RGB;\n\t}\n#endif";
+
+var roughnessmap_fragment = "float roughnessFactor = roughness;\n#ifdef USE_ROUGHNESSMAP\n\tvec4 texelRoughness = texture2D( roughnessMap, vRoughnessMapUv );\n\troughnessFactor *= texelRoughness.g;\n#endif";
+
+var roughnessmap_pars_fragment = "#ifdef USE_ROUGHNESSMAP\n\tuniform sampler2D roughnessMap;\n#endif";
+
+var shadowmap_pars_fragment = "#if NUM_SPOT_LIGHT_COORDS > 0\n\tvarying vec4 vSpotLightCoord[ NUM_SPOT_LIGHT_COORDS ];\n#endif\n#if NUM_SPOT_LIGHT_MAPS > 0\n\tuniform sampler2D spotLightMap[ NUM_SPOT_LIGHT_MAPS ];\n#endif\n#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D directionalShadowMap[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowIntensity;\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D spotShadowMap[ NUM_SPOT_LIGHT_SHADOWS ];\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowIntensity;\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform sampler2D pointShadowMap[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowIntensity;\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n\tfloat texture2DCompare( sampler2D depths, vec2 uv, float compare ) {\n\t\treturn step( compare, unpackRGBAToDepth( texture2D( depths, uv ) ) );\n\t}\n\tvec2 texture2DDistribution( sampler2D shadow, vec2 uv ) {\n\t\treturn unpackRGBATo2Half( texture2D( shadow, uv ) );\n\t}\n\tfloat VSMShadow (sampler2D shadow, vec2 uv, float compare ){\n\t\tfloat occlusion = 1.0;\n\t\tvec2 distribution = texture2DDistribution( shadow, uv );\n\t\tfloat hard_shadow = step( compare , distribution.x );\n\t\tif (hard_shadow != 1.0 ) {\n\t\t\tfloat distance = compare - distribution.x ;\n\t\t\tfloat variance = max( 0.00000, distribution.y * distribution.y );\n\t\t\tfloat softness_probability = variance / (variance + distance * distance );\t\t\tsoftness_probability = clamp( ( softness_probability - 0.3 ) / ( 0.95 - 0.3 ), 0.0, 1.0 );\t\t\tocclusion = clamp( max( hard_shadow, softness_probability ), 0.0, 1.0 );\n\t\t}\n\t\treturn occlusion;\n\t}\n\tfloat getShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowIntensity, float shadowBias, float shadowRadius, vec4 shadowCoord ) {\n\t\tfloat shadow = 1.0;\n\t\tshadowCoord.xyz /= shadowCoord.w;\n\t\tshadowCoord.z += shadowBias;\n\t\tbool inFrustum = shadowCoord.x >= 0.0 && shadowCoord.x <= 1.0 && shadowCoord.y >= 0.0 && shadowCoord.y <= 1.0;\n\t\tbool frustumTest = inFrustum && shadowCoord.z <= 1.0;\n\t\tif ( frustumTest ) {\n\t\t#if defined( SHADOWMAP_TYPE_PCF )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx0 = - texelSize.x * shadowRadius;\n\t\t\tfloat dy0 = - texelSize.y * shadowRadius;\n\t\t\tfloat dx1 = + texelSize.x * shadowRadius;\n\t\t\tfloat dy1 = + texelSize.y * shadowRadius;\n\t\t\tfloat dx2 = dx0 / 2.0;\n\t\t\tfloat dy2 = dy0 / 2.0;\n\t\t\tfloat dx3 = dx1 / 2.0;\n\t\t\tfloat dy3 = dy1 / 2.0;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy2 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx2, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx3, dy3 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( 0.0, dy1 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, shadowCoord.xy + vec2( dx1, dy1 ), shadowCoord.z )\n\t\t\t) * ( 1.0 / 17.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_PCF_SOFT )\n\t\t\tvec2 texelSize = vec2( 1.0 ) / shadowMapSize;\n\t\t\tfloat dx = texelSize.x;\n\t\t\tfloat dy = texelSize.y;\n\t\t\tvec2 uv = shadowCoord.xy;\n\t\t\tvec2 f = fract( uv * shadowMapSize + 0.5 );\n\t\t\tuv -= f * texelSize;\n\t\t\tshadow = (\n\t\t\t\ttexture2DCompare( shadowMap, uv, shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( dx, 0.0 ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + vec2( 0.0, dy ), shadowCoord.z ) +\n\t\t\t\ttexture2DCompare( shadowMap, uv + texelSize, shadowCoord.z ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 0.0 ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( -dx, dy ), shadowCoord.z ),\n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, dy ), shadowCoord.z ),\n\t\t\t\t\t f.x ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( 0.0, -dy ), shadowCoord.z ),\n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( 0.0, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( texture2DCompare( shadowMap, uv + vec2( dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t texture2DCompare( shadowMap, uv + vec2( dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t f.y ) +\n\t\t\t\tmix( mix( texture2DCompare( shadowMap, uv + vec2( -dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, -dy ), shadowCoord.z ),\n\t\t\t\t\t\t  f.x ),\n\t\t\t\t\t mix( texture2DCompare( shadowMap, uv + vec2( -dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t  texture2DCompare( shadowMap, uv + vec2( 2.0 * dx, 2.0 * dy ), shadowCoord.z ),\n\t\t\t\t\t\t  f.x ),\n\t\t\t\t\t f.y )\n\t\t\t) * ( 1.0 / 9.0 );\n\t\t#elif defined( SHADOWMAP_TYPE_VSM )\n\t\t\tshadow = VSMShadow( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#else\n\t\t\tshadow = texture2DCompare( shadowMap, shadowCoord.xy, shadowCoord.z );\n\t\t#endif\n\t\t}\n\t\treturn mix( 1.0, shadow, shadowIntensity );\n\t}\n\tvec2 cubeToUV( vec3 v, float texelSizeY ) {\n\t\tvec3 absV = abs( v );\n\t\tfloat scaleToCube = 1.0 / max( absV.x, max( absV.y, absV.z ) );\n\t\tabsV *= scaleToCube;\n\t\tv *= scaleToCube * ( 1.0 - 2.0 * texelSizeY );\n\t\tvec2 planar = v.xy;\n\t\tfloat almostATexel = 1.5 * texelSizeY;\n\t\tfloat almostOne = 1.0 - almostATexel;\n\t\tif ( absV.z >= almostOne ) {\n\t\t\tif ( v.z > 0.0 )\n\t\t\t\tplanar.x = 4.0 - v.x;\n\t\t} else if ( absV.x >= almostOne ) {\n\t\t\tfloat signX = sign( v.x );\n\t\t\tplanar.x = v.z * signX + 2.0 * signX;\n\t\t} else if ( absV.y >= almostOne ) {\n\t\t\tfloat signY = sign( v.y );\n\t\t\tplanar.x = v.x + 2.0 * signY + 2.0;\n\t\t\tplanar.y = v.z * signY - 2.0;\n\t\t}\n\t\treturn vec2( 0.125, 0.25 ) * planar + vec2( 0.375, 0.75 );\n\t}\n\tfloat getPointShadow( sampler2D shadowMap, vec2 shadowMapSize, float shadowIntensity, float shadowBias, float shadowRadius, vec4 shadowCoord, float shadowCameraNear, float shadowCameraFar ) {\n\t\tfloat shadow = 1.0;\n\t\tvec3 lightToPosition = shadowCoord.xyz;\n\t\t\n\t\tfloat lightToPositionLength = length( lightToPosition );\n\t\tif ( lightToPositionLength - shadowCameraFar <= 0.0 && lightToPositionLength - shadowCameraNear >= 0.0 ) {\n\t\t\tfloat dp = ( lightToPositionLength - shadowCameraNear ) / ( shadowCameraFar - shadowCameraNear );\t\t\tdp += shadowBias;\n\t\t\tvec3 bd3D = normalize( lightToPosition );\n\t\t\tvec2 texelSize = vec2( 1.0 ) / ( shadowMapSize * vec2( 4.0, 2.0 ) );\n\t\t\t#if defined( SHADOWMAP_TYPE_PCF ) || defined( SHADOWMAP_TYPE_PCF_SOFT ) || defined( SHADOWMAP_TYPE_VSM )\n\t\t\t\tvec2 offset = vec2( - 1, 1 ) * shadowRadius * texelSize.y;\n\t\t\t\tshadow = (\n\t\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyy, texelSize.y ), dp ) +\n\t\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyy, texelSize.y ), dp ) +\n\t\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xyx, texelSize.y ), dp ) +\n\t\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yyx, texelSize.y ), dp ) +\n\t\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp ) +\n\t\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxy, texelSize.y ), dp ) +\n\t\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxy, texelSize.y ), dp ) +\n\t\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.xxx, texelSize.y ), dp ) +\n\t\t\t\t\ttexture2DCompare( shadowMap, cubeToUV( bd3D + offset.yxx, texelSize.y ), dp )\n\t\t\t\t) * ( 1.0 / 9.0 );\n\t\t\t#else\n\t\t\t\tshadow = texture2DCompare( shadowMap, cubeToUV( bd3D, texelSize.y ), dp );\n\t\t\t#endif\n\t\t}\n\t\treturn mix( 1.0, shadow, shadowIntensity );\n\t}\n#endif";
+
+var shadowmap_pars_vertex = "#if NUM_SPOT_LIGHT_COORDS > 0\n\tuniform mat4 spotLightMatrix[ NUM_SPOT_LIGHT_COORDS ];\n\tvarying vec4 vSpotLightCoord[ NUM_SPOT_LIGHT_COORDS ];\n#endif\n#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\tuniform mat4 directionalShadowMatrix[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tvarying vec4 vDirectionalShadowCoord[ NUM_DIR_LIGHT_SHADOWS ];\n\t\tstruct DirectionalLightShadow {\n\t\t\tfloat shadowIntensity;\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform DirectionalLightShadow directionalLightShadows[ NUM_DIR_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\t\tstruct SpotLightShadow {\n\t\t\tfloat shadowIntensity;\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t};\n\t\tuniform SpotLightShadow spotLightShadows[ NUM_SPOT_LIGHT_SHADOWS ];\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\tuniform mat4 pointShadowMatrix[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tvarying vec4 vPointShadowCoord[ NUM_POINT_LIGHT_SHADOWS ];\n\t\tstruct PointLightShadow {\n\t\t\tfloat shadowIntensity;\n\t\t\tfloat shadowBias;\n\t\t\tfloat shadowNormalBias;\n\t\t\tfloat shadowRadius;\n\t\t\tvec2 shadowMapSize;\n\t\t\tfloat shadowCameraNear;\n\t\t\tfloat shadowCameraFar;\n\t\t};\n\t\tuniform PointLightShadow pointLightShadows[ NUM_POINT_LIGHT_SHADOWS ];\n\t#endif\n#endif";
+
+var shadowmap_vertex = "#if ( defined( USE_SHADOWMAP ) && ( NUM_DIR_LIGHT_SHADOWS > 0 || NUM_POINT_LIGHT_SHADOWS > 0 ) ) || ( NUM_SPOT_LIGHT_COORDS > 0 )\n\tvec3 shadowWorldNormal = inverseTransformDirection( transformedNormal, viewMatrix );\n\tvec4 shadowWorldPosition;\n#endif\n#if defined( USE_SHADOWMAP )\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * directionalLightShadows[ i ].shadowNormalBias, 0 );\n\t\t\tvDirectionalShadowCoord[ i ] = directionalShadowMatrix[ i ] * shadowWorldPosition;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\t\t#pragma unroll_loop_start\n\t\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\t\tshadowWorldPosition = worldPosition + vec4( shadowWorldNormal * pointLightShadows[ i ].shadowNormalBias, 0 );\n\t\t\tvPointShadowCoord[ i ] = pointShadowMatrix[ i ] * shadowWorldPosition;\n\t\t}\n\t\t#pragma unroll_loop_end\n\t#endif\n#endif\n#if NUM_SPOT_LIGHT_COORDS > 0\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_COORDS; i ++ ) {\n\t\tshadowWorldPosition = worldPosition;\n\t\t#if ( defined( USE_SHADOWMAP ) && UNROLLED_LOOP_INDEX < NUM_SPOT_LIGHT_SHADOWS )\n\t\t\tshadowWorldPosition.xyz += shadowWorldNormal * spotLightShadows[ i ].shadowNormalBias;\n\t\t#endif\n\t\tvSpotLightCoord[ i ] = spotLightMatrix[ i ] * shadowWorldPosition;\n\t}\n\t#pragma unroll_loop_end\n#endif";
+
+var shadowmask_pars_fragment = "float getShadowMask() {\n\tfloat shadow = 1.0;\n\t#ifdef USE_SHADOWMAP\n\t#if NUM_DIR_LIGHT_SHADOWS > 0\n\tDirectionalLightShadow directionalLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_DIR_LIGHT_SHADOWS; i ++ ) {\n\t\tdirectionalLight = directionalLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( directionalShadowMap[ i ], directionalLight.shadowMapSize, directionalLight.shadowIntensity, directionalLight.shadowBias, directionalLight.shadowRadius, vDirectionalShadowCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_SPOT_LIGHT_SHADOWS > 0\n\tSpotLightShadow spotLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_SPOT_LIGHT_SHADOWS; i ++ ) {\n\t\tspotLight = spotLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getShadow( spotShadowMap[ i ], spotLight.shadowMapSize, spotLight.shadowIntensity, spotLight.shadowBias, spotLight.shadowRadius, vSpotLightCoord[ i ] ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#if NUM_POINT_LIGHT_SHADOWS > 0\n\tPointLightShadow pointLight;\n\t#pragma unroll_loop_start\n\tfor ( int i = 0; i < NUM_POINT_LIGHT_SHADOWS; i ++ ) {\n\t\tpointLight = pointLightShadows[ i ];\n\t\tshadow *= receiveShadow ? getPointShadow( pointShadowMap[ i ], pointLight.shadowMapSize, pointLight.shadowIntensity, pointLight.shadowBias, pointLight.shadowRadius, vPointShadowCoord[ i ], pointLight.shadowCameraNear, pointLight.shadowCameraFar ) : 1.0;\n\t}\n\t#pragma unroll_loop_end\n\t#endif\n\t#endif\n\treturn shadow;\n}";
+
+var skinbase_vertex = "#ifdef USE_SKINNING\n\tmat4 boneMatX = getBoneMatrix( skinIndex.x );\n\tmat4 boneMatY = getBoneMatrix( skinIndex.y );\n\tmat4 boneMatZ = getBoneMatrix( skinIndex.z );\n\tmat4 boneMatW = getBoneMatrix( skinIndex.w );\n#endif";
+
+var skinning_pars_vertex = "#ifdef USE_SKINNING\n\tuniform mat4 bindMatrix;\n\tuniform mat4 bindMatrixInverse;\n\tuniform highp sampler2D boneTexture;\n\tmat4 getBoneMatrix( const in float i ) {\n\t\tint size = textureSize( boneTexture, 0 ).x;\n\t\tint j = int( i ) * 4;\n\t\tint x = j % size;\n\t\tint y = j / size;\n\t\tvec4 v1 = texelFetch( boneTexture, ivec2( x, y ), 0 );\n\t\tvec4 v2 = texelFetch( boneTexture, ivec2( x + 1, y ), 0 );\n\t\tvec4 v3 = texelFetch( boneTexture, ivec2( x + 2, y ), 0 );\n\t\tvec4 v4 = texelFetch( boneTexture, ivec2( x + 3, y ), 0 );\n\t\treturn mat4( v1, v2, v3, v4 );\n\t}\n#endif";
+
+var skinning_vertex = "#ifdef USE_SKINNING\n\tvec4 skinVertex = bindMatrix * vec4( transformed, 1.0 );\n\tvec4 skinned = vec4( 0.0 );\n\tskinned += boneMatX * skinVertex * skinWeight.x;\n\tskinned += boneMatY * skinVertex * skinWeight.y;\n\tskinned += boneMatZ * skinVertex * skinWeight.z;\n\tskinned += boneMatW * skinVertex * skinWeight.w;\n\ttransformed = ( bindMatrixInverse * skinned ).xyz;\n#endif";
+
+var skinnormal_vertex = "#ifdef USE_SKINNING\n\tmat4 skinMatrix = mat4( 0.0 );\n\tskinMatrix += skinWeight.x * boneMatX;\n\tskinMatrix += skinWeight.y * boneMatY;\n\tskinMatrix += skinWeight.z * boneMatZ;\n\tskinMatrix += skinWeight.w * boneMatW;\n\tskinMatrix = bindMatrixInverse * skinMatrix * bindMatrix;\n\tobjectNormal = vec4( skinMatrix * vec4( objectNormal, 0.0 ) ).xyz;\n\t#ifdef USE_TANGENT\n\t\tobjectTangent = vec4( skinMatrix * vec4( objectTangent, 0.0 ) ).xyz;\n\t#endif\n#endif";
+
+var specularmap_fragment = "float specularStrength;\n#ifdef USE_SPECULARMAP\n\tvec4 texelSpecular = texture2D( specularMap, vSpecularMapUv );\n\tspecularStrength = texelSpecular.r;\n#else\n\tspecularStrength = 1.0;\n#endif";
+
+var specularmap_pars_fragment = "#ifdef USE_SPECULARMAP\n\tuniform sampler2D specularMap;\n#endif";
+
+var tonemapping_fragment = "#if defined( TONE_MAPPING )\n\tgl_FragColor.rgb = toneMapping( gl_FragColor.rgb );\n#endif";
+
+var tonemapping_pars_fragment = "#ifndef saturate\n#define saturate( a ) clamp( a, 0.0, 1.0 )\n#endif\nuniform float toneMappingExposure;\nvec3 LinearToneMapping( vec3 color ) {\n\treturn saturate( toneMappingExposure * color );\n}\nvec3 ReinhardToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\treturn saturate( color / ( vec3( 1.0 ) + color ) );\n}\nvec3 CineonToneMapping( vec3 color ) {\n\tcolor *= toneMappingExposure;\n\tcolor = max( vec3( 0.0 ), color - 0.004 );\n\treturn pow( ( color * ( 6.2 * color + 0.5 ) ) / ( color * ( 6.2 * color + 1.7 ) + 0.06 ), vec3( 2.2 ) );\n}\nvec3 RRTAndODTFit( vec3 v ) {\n\tvec3 a = v * ( v + 0.0245786 ) - 0.000090537;\n\tvec3 b = v * ( 0.983729 * v + 0.4329510 ) + 0.238081;\n\treturn a / b;\n}\nvec3 ACESFilmicToneMapping( vec3 color ) {\n\tconst mat3 ACESInputMat = mat3(\n\t\tvec3( 0.59719, 0.07600, 0.02840 ),\t\tvec3( 0.35458, 0.90834, 0.13383 ),\n\t\tvec3( 0.04823, 0.01566, 0.83777 )\n\t);\n\tconst mat3 ACESOutputMat = mat3(\n\t\tvec3(  1.60475, -0.10208, -0.00327 ),\t\tvec3( -0.53108,  1.10813, -0.07276 ),\n\t\tvec3( -0.07367, -0.00605,  1.07602 )\n\t);\n\tcolor *= toneMappingExposure / 0.6;\n\tcolor = ACESInputMat * color;\n\tcolor = RRTAndODTFit( color );\n\tcolor = ACESOutputMat * color;\n\treturn saturate( color );\n}\nconst mat3 LINEAR_REC2020_TO_LINEAR_SRGB = mat3(\n\tvec3( 1.6605, - 0.1246, - 0.0182 ),\n\tvec3( - 0.5876, 1.1329, - 0.1006 ),\n\tvec3( - 0.0728, - 0.0083, 1.1187 )\n);\nconst mat3 LINEAR_SRGB_TO_LINEAR_REC2020 = mat3(\n\tvec3( 0.6274, 0.0691, 0.0164 ),\n\tvec3( 0.3293, 0.9195, 0.0880 ),\n\tvec3( 0.0433, 0.0113, 0.8956 )\n);\nvec3 agxDefaultContrastApprox( vec3 x ) {\n\tvec3 x2 = x * x;\n\tvec3 x4 = x2 * x2;\n\treturn + 15.5 * x4 * x2\n\t\t- 40.14 * x4 * x\n\t\t+ 31.96 * x4\n\t\t- 6.868 * x2 * x\n\t\t+ 0.4298 * x2\n\t\t+ 0.1191 * x\n\t\t- 0.00232;\n}\nvec3 AgXToneMapping( vec3 color ) {\n\tconst mat3 AgXInsetMatrix = mat3(\n\t\tvec3( 0.856627153315983, 0.137318972929847, 0.11189821299995 ),\n\t\tvec3( 0.0951212405381588, 0.761241990602591, 0.0767994186031903 ),\n\t\tvec3( 0.0482516061458583, 0.101439036467562, 0.811302368396859 )\n\t);\n\tconst mat3 AgXOutsetMatrix = mat3(\n\t\tvec3( 1.1271005818144368, - 0.1413297634984383, - 0.14132976349843826 ),\n\t\tvec3( - 0.11060664309660323, 1.157823702216272, - 0.11060664309660294 ),\n\t\tvec3( - 0.016493938717834573, - 0.016493938717834257, 1.2519364065950405 )\n\t);\n\tconst float AgxMinEv = - 12.47393;\tconst float AgxMaxEv = 4.026069;\n\tcolor *= toneMappingExposure;\n\tcolor = LINEAR_SRGB_TO_LINEAR_REC2020 * color;\n\tcolor = AgXInsetMatrix * color;\n\tcolor = max( color, 1e-10 );\tcolor = log2( color );\n\tcolor = ( color - AgxMinEv ) / ( AgxMaxEv - AgxMinEv );\n\tcolor = clamp( color, 0.0, 1.0 );\n\tcolor = agxDefaultContrastApprox( color );\n\tcolor = AgXOutsetMatrix * color;\n\tcolor = pow( max( vec3( 0.0 ), color ), vec3( 2.2 ) );\n\tcolor = LINEAR_REC2020_TO_LINEAR_SRGB * color;\n\tcolor = clamp( color, 0.0, 1.0 );\n\treturn color;\n}\nvec3 NeutralToneMapping( vec3 color ) {\n\tconst float StartCompression = 0.8 - 0.04;\n\tconst float Desaturation = 0.15;\n\tcolor *= toneMappingExposure;\n\tfloat x = min( color.r, min( color.g, color.b ) );\n\tfloat offset = x < 0.08 ? x - 6.25 * x * x : 0.04;\n\tcolor -= offset;\n\tfloat peak = max( color.r, max( color.g, color.b ) );\n\tif ( peak < StartCompression ) return color;\n\tfloat d = 1. - StartCompression;\n\tfloat newPeak = 1. - d * d / ( peak + d - StartCompression );\n\tcolor *= newPeak / peak;\n\tfloat g = 1. - 1. / ( Desaturation * ( peak - newPeak ) + 1. );\n\treturn mix( color, vec3( newPeak ), g );\n}\nvec3 CustomToneMapping( vec3 color ) { return color; }";
+
+var transmission_fragment = "#ifdef USE_TRANSMISSION\n\tmaterial.transmission = transmission;\n\tmaterial.transmissionAlpha = 1.0;\n\tmaterial.thickness = thickness;\n\tmaterial.attenuationDistance = attenuationDistance;\n\tmaterial.attenuationColor = attenuationColor;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\tmaterial.transmission *= texture2D( transmissionMap, vTransmissionMapUv ).r;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tmaterial.thickness *= texture2D( thicknessMap, vThicknessMapUv ).g;\n\t#endif\n\tvec3 pos = vWorldPosition;\n\tvec3 v = normalize( cameraPosition - pos );\n\tvec3 n = inverseTransformDirection( normal, viewMatrix );\n\tvec4 transmitted = getIBLVolumeRefraction(\n\t\tn, v, material.roughness, material.diffuseColor, material.specularColor, material.specularF90,\n\t\tpos, modelMatrix, viewMatrix, projectionMatrix, material.dispersion, material.ior, material.thickness,\n\t\tmaterial.attenuationColor, material.attenuationDistance );\n\tmaterial.transmissionAlpha = mix( material.transmissionAlpha, transmitted.a, material.transmission );\n\ttotalDiffuse = mix( totalDiffuse, transmitted.rgb, material.transmission );\n#endif";
+
+var transmission_pars_fragment = "#ifdef USE_TRANSMISSION\n\tuniform float transmission;\n\tuniform float thickness;\n\tuniform float attenuationDistance;\n\tuniform vec3 attenuationColor;\n\t#ifdef USE_TRANSMISSIONMAP\n\t\tuniform sampler2D transmissionMap;\n\t#endif\n\t#ifdef USE_THICKNESSMAP\n\t\tuniform sampler2D thicknessMap;\n\t#endif\n\tuniform vec2 transmissionSamplerSize;\n\tuniform sampler2D transmissionSamplerMap;\n\tuniform mat4 modelMatrix;\n\tuniform mat4 projectionMatrix;\n\tvarying vec3 vWorldPosition;\n\tfloat w0( float a ) {\n\t\treturn ( 1.0 / 6.0 ) * ( a * ( a * ( - a + 3.0 ) - 3.0 ) + 1.0 );\n\t}\n\tfloat w1( float a ) {\n\t\treturn ( 1.0 / 6.0 ) * ( a *  a * ( 3.0 * a - 6.0 ) + 4.0 );\n\t}\n\tfloat w2( float a ){\n\t\treturn ( 1.0 / 6.0 ) * ( a * ( a * ( - 3.0 * a + 3.0 ) + 3.0 ) + 1.0 );\n\t}\n\tfloat w3( float a ) {\n\t\treturn ( 1.0 / 6.0 ) * ( a * a * a );\n\t}\n\tfloat g0( float a ) {\n\t\treturn w0( a ) + w1( a );\n\t}\n\tfloat g1( float a ) {\n\t\treturn w2( a ) + w3( a );\n\t}\n\tfloat h0( float a ) {\n\t\treturn - 1.0 + w1( a ) / ( w0( a ) + w1( a ) );\n\t}\n\tfloat h1( float a ) {\n\t\treturn 1.0 + w3( a ) / ( w2( a ) + w3( a ) );\n\t}\n\tvec4 bicubic( sampler2D tex, vec2 uv, vec4 texelSize, float lod ) {\n\t\tuv = uv * texelSize.zw + 0.5;\n\t\tvec2 iuv = floor( uv );\n\t\tvec2 fuv = fract( uv );\n\t\tfloat g0x = g0( fuv.x );\n\t\tfloat g1x = g1( fuv.x );\n\t\tfloat h0x = h0( fuv.x );\n\t\tfloat h1x = h1( fuv.x );\n\t\tfloat h0y = h0( fuv.y );\n\t\tfloat h1y = h1( fuv.y );\n\t\tvec2 p0 = ( vec2( iuv.x + h0x, iuv.y + h0y ) - 0.5 ) * texelSize.xy;\n\t\tvec2 p1 = ( vec2( iuv.x + h1x, iuv.y + h0y ) - 0.5 ) * texelSize.xy;\n\t\tvec2 p2 = ( vec2( iuv.x + h0x, iuv.y + h1y ) - 0.5 ) * texelSize.xy;\n\t\tvec2 p3 = ( vec2( iuv.x + h1x, iuv.y + h1y ) - 0.5 ) * texelSize.xy;\n\t\treturn g0( fuv.y ) * ( g0x * textureLod( tex, p0, lod ) + g1x * textureLod( tex, p1, lod ) ) +\n\t\t\tg1( fuv.y ) * ( g0x * textureLod( tex, p2, lod ) + g1x * textureLod( tex, p3, lod ) );\n\t}\n\tvec4 textureBicubic( sampler2D sampler, vec2 uv, float lod ) {\n\t\tvec2 fLodSize = vec2( textureSize( sampler, int( lod ) ) );\n\t\tvec2 cLodSize = vec2( textureSize( sampler, int( lod + 1.0 ) ) );\n\t\tvec2 fLodSizeInv = 1.0 / fLodSize;\n\t\tvec2 cLodSizeInv = 1.0 / cLodSize;\n\t\tvec4 fSample = bicubic( sampler, uv, vec4( fLodSizeInv, fLodSize ), floor( lod ) );\n\t\tvec4 cSample = bicubic( sampler, uv, vec4( cLodSizeInv, cLodSize ), ceil( lod ) );\n\t\treturn mix( fSample, cSample, fract( lod ) );\n\t}\n\tvec3 getVolumeTransmissionRay( const in vec3 n, const in vec3 v, const in float thickness, const in float ior, const in mat4 modelMatrix ) {\n\t\tvec3 refractionVector = refract( - v, normalize( n ), 1.0 / ior );\n\t\tvec3 modelScale;\n\t\tmodelScale.x = length( vec3( modelMatrix[ 0 ].xyz ) );\n\t\tmodelScale.y = length( vec3( modelMatrix[ 1 ].xyz ) );\n\t\tmodelScale.z = length( vec3( modelMatrix[ 2 ].xyz ) );\n\t\treturn normalize( refractionVector ) * thickness * modelScale;\n\t}\n\tfloat applyIorToRoughness( const in float roughness, const in float ior ) {\n\t\treturn roughness * clamp( ior * 2.0 - 2.0, 0.0, 1.0 );\n\t}\n\tvec4 getTransmissionSample( const in vec2 fragCoord, const in float roughness, const in float ior ) {\n\t\tfloat lod = log2( transmissionSamplerSize.x ) * applyIorToRoughness( roughness, ior );\n\t\treturn textureBicubic( transmissionSamplerMap, fragCoord.xy, lod );\n\t}\n\tvec3 volumeAttenuation( const in float transmissionDistance, const in vec3 attenuationColor, const in float attenuationDistance ) {\n\t\tif ( isinf( attenuationDistance ) ) {\n\t\t\treturn vec3( 1.0 );\n\t\t} else {\n\t\t\tvec3 attenuationCoefficient = -log( attenuationColor ) / attenuationDistance;\n\t\t\tvec3 transmittance = exp( - attenuationCoefficient * transmissionDistance );\t\t\treturn transmittance;\n\t\t}\n\t}\n\tvec4 getIBLVolumeRefraction( const in vec3 n, const in vec3 v, const in float roughness, const in vec3 diffuseColor,\n\t\tconst in vec3 specularColor, const in float specularF90, const in vec3 position, const in mat4 modelMatrix,\n\t\tconst in mat4 viewMatrix, const in mat4 projMatrix, const in float dispersion, const in float ior, const in float thickness,\n\t\tconst in vec3 attenuationColor, const in float attenuationDistance ) {\n\t\tvec4 transmittedLight;\n\t\tvec3 transmittance;\n\t\t#ifdef USE_DISPERSION\n\t\t\tfloat halfSpread = ( ior - 1.0 ) * 0.025 * dispersion;\n\t\t\tvec3 iors = vec3( ior - halfSpread, ior, ior + halfSpread );\n\t\t\tfor ( int i = 0; i < 3; i ++ ) {\n\t\t\t\tvec3 transmissionRay = getVolumeTransmissionRay( n, v, thickness, iors[ i ], modelMatrix );\n\t\t\t\tvec3 refractedRayExit = position + transmissionRay;\n\t\t\n\t\t\t\tvec4 ndcPos = projMatrix * viewMatrix * vec4( refractedRayExit, 1.0 );\n\t\t\t\tvec2 refractionCoords = ndcPos.xy / ndcPos.w;\n\t\t\t\trefractionCoords += 1.0;\n\t\t\t\trefractionCoords /= 2.0;\n\t\t\n\t\t\t\tvec4 transmissionSample = getTransmissionSample( refractionCoords, roughness, iors[ i ] );\n\t\t\t\ttransmittedLight[ i ] = transmissionSample[ i ];\n\t\t\t\ttransmittedLight.a += transmissionSample.a;\n\t\t\t\ttransmittance[ i ] = diffuseColor[ i ] * volumeAttenuation( length( transmissionRay ), attenuationColor, attenuationDistance )[ i ];\n\t\t\t}\n\t\t\ttransmittedLight.a /= 3.0;\n\t\t\n\t\t#else\n\t\t\n\t\t\tvec3 transmissionRay = getVolumeTransmissionRay( n, v, thickness, ior, modelMatrix );\n\t\t\tvec3 refractedRayExit = position + transmissionRay;\n\t\t\tvec4 ndcPos = projMatrix * viewMatrix * vec4( refractedRayExit, 1.0 );\n\t\t\tvec2 refractionCoords = ndcPos.xy / ndcPos.w;\n\t\t\trefractionCoords += 1.0;\n\t\t\trefractionCoords /= 2.0;\n\t\t\ttransmittedLight = getTransmissionSample( refractionCoords, roughness, ior );\n\t\t\ttransmittance = diffuseColor * volumeAttenuation( length( transmissionRay ), attenuationColor, attenuationDistance );\n\t\t\n\t\t#endif\n\t\tvec3 attenuatedColor = transmittance * transmittedLight.rgb;\n\t\tvec3 F = EnvironmentBRDF( n, v, specularColor, specularF90, roughness );\n\t\tfloat transmittanceFactor = ( transmittance.r + transmittance.g + transmittance.b ) / 3.0;\n\t\treturn vec4( ( 1.0 - F ) * attenuatedColor, 1.0 - ( 1.0 - transmittedLight.a ) * transmittanceFactor );\n\t}\n#endif";
+
+var uv_pars_fragment = "#if defined( USE_UV ) || defined( USE_ANISOTROPY )\n\tvarying vec2 vUv;\n#endif\n#ifdef USE_MAP\n\tvarying vec2 vMapUv;\n#endif\n#ifdef USE_ALPHAMAP\n\tvarying vec2 vAlphaMapUv;\n#endif\n#ifdef USE_LIGHTMAP\n\tvarying vec2 vLightMapUv;\n#endif\n#ifdef USE_AOMAP\n\tvarying vec2 vAoMapUv;\n#endif\n#ifdef USE_BUMPMAP\n\tvarying vec2 vBumpMapUv;\n#endif\n#ifdef USE_NORMALMAP\n\tvarying vec2 vNormalMapUv;\n#endif\n#ifdef USE_EMISSIVEMAP\n\tvarying vec2 vEmissiveMapUv;\n#endif\n#ifdef USE_METALNESSMAP\n\tvarying vec2 vMetalnessMapUv;\n#endif\n#ifdef USE_ROUGHNESSMAP\n\tvarying vec2 vRoughnessMapUv;\n#endif\n#ifdef USE_ANISOTROPYMAP\n\tvarying vec2 vAnisotropyMapUv;\n#endif\n#ifdef USE_CLEARCOATMAP\n\tvarying vec2 vClearcoatMapUv;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tvarying vec2 vClearcoatNormalMapUv;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tvarying vec2 vClearcoatRoughnessMapUv;\n#endif\n#ifdef USE_IRIDESCENCEMAP\n\tvarying vec2 vIridescenceMapUv;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\tvarying vec2 vIridescenceThicknessMapUv;\n#endif\n#ifdef USE_SHEEN_COLORMAP\n\tvarying vec2 vSheenColorMapUv;\n#endif\n#ifdef USE_SHEEN_ROUGHNESSMAP\n\tvarying vec2 vSheenRoughnessMapUv;\n#endif\n#ifdef USE_SPECULARMAP\n\tvarying vec2 vSpecularMapUv;\n#endif\n#ifdef USE_SPECULAR_COLORMAP\n\tvarying vec2 vSpecularColorMapUv;\n#endif\n#ifdef USE_SPECULAR_INTENSITYMAP\n\tvarying vec2 vSpecularIntensityMapUv;\n#endif\n#ifdef USE_TRANSMISSIONMAP\n\tuniform mat3 transmissionMapTransform;\n\tvarying vec2 vTransmissionMapUv;\n#endif\n#ifdef USE_THICKNESSMAP\n\tuniform mat3 thicknessMapTransform;\n\tvarying vec2 vThicknessMapUv;\n#endif";
+
+var uv_pars_vertex = "#if defined( USE_UV ) || defined( USE_ANISOTROPY )\n\tvarying vec2 vUv;\n#endif\n#ifdef USE_MAP\n\tuniform mat3 mapTransform;\n\tvarying vec2 vMapUv;\n#endif\n#ifdef USE_ALPHAMAP\n\tuniform mat3 alphaMapTransform;\n\tvarying vec2 vAlphaMapUv;\n#endif\n#ifdef USE_LIGHTMAP\n\tuniform mat3 lightMapTransform;\n\tvarying vec2 vLightMapUv;\n#endif\n#ifdef USE_AOMAP\n\tuniform mat3 aoMapTransform;\n\tvarying vec2 vAoMapUv;\n#endif\n#ifdef USE_BUMPMAP\n\tuniform mat3 bumpMapTransform;\n\tvarying vec2 vBumpMapUv;\n#endif\n#ifdef USE_NORMALMAP\n\tuniform mat3 normalMapTransform;\n\tvarying vec2 vNormalMapUv;\n#endif\n#ifdef USE_DISPLACEMENTMAP\n\tuniform mat3 displacementMapTransform;\n\tvarying vec2 vDisplacementMapUv;\n#endif\n#ifdef USE_EMISSIVEMAP\n\tuniform mat3 emissiveMapTransform;\n\tvarying vec2 vEmissiveMapUv;\n#endif\n#ifdef USE_METALNESSMAP\n\tuniform mat3 metalnessMapTransform;\n\tvarying vec2 vMetalnessMapUv;\n#endif\n#ifdef USE_ROUGHNESSMAP\n\tuniform mat3 roughnessMapTransform;\n\tvarying vec2 vRoughnessMapUv;\n#endif\n#ifdef USE_ANISOTROPYMAP\n\tuniform mat3 anisotropyMapTransform;\n\tvarying vec2 vAnisotropyMapUv;\n#endif\n#ifdef USE_CLEARCOATMAP\n\tuniform mat3 clearcoatMapTransform;\n\tvarying vec2 vClearcoatMapUv;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tuniform mat3 clearcoatNormalMapTransform;\n\tvarying vec2 vClearcoatNormalMapUv;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tuniform mat3 clearcoatRoughnessMapTransform;\n\tvarying vec2 vClearcoatRoughnessMapUv;\n#endif\n#ifdef USE_SHEEN_COLORMAP\n\tuniform mat3 sheenColorMapTransform;\n\tvarying vec2 vSheenColorMapUv;\n#endif\n#ifdef USE_SHEEN_ROUGHNESSMAP\n\tuniform mat3 sheenRoughnessMapTransform;\n\tvarying vec2 vSheenRoughnessMapUv;\n#endif\n#ifdef USE_IRIDESCENCEMAP\n\tuniform mat3 iridescenceMapTransform;\n\tvarying vec2 vIridescenceMapUv;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\tuniform mat3 iridescenceThicknessMapTransform;\n\tvarying vec2 vIridescenceThicknessMapUv;\n#endif\n#ifdef USE_SPECULARMAP\n\tuniform mat3 specularMapTransform;\n\tvarying vec2 vSpecularMapUv;\n#endif\n#ifdef USE_SPECULAR_COLORMAP\n\tuniform mat3 specularColorMapTransform;\n\tvarying vec2 vSpecularColorMapUv;\n#endif\n#ifdef USE_SPECULAR_INTENSITYMAP\n\tuniform mat3 specularIntensityMapTransform;\n\tvarying vec2 vSpecularIntensityMapUv;\n#endif\n#ifdef USE_TRANSMISSIONMAP\n\tuniform mat3 transmissionMapTransform;\n\tvarying vec2 vTransmissionMapUv;\n#endif\n#ifdef USE_THICKNESSMAP\n\tuniform mat3 thicknessMapTransform;\n\tvarying vec2 vThicknessMapUv;\n#endif";
+
+var uv_vertex = "#if defined( USE_UV ) || defined( USE_ANISOTROPY )\n\tvUv = vec3( uv, 1 ).xy;\n#endif\n#ifdef USE_MAP\n\tvMapUv = ( mapTransform * vec3( MAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_ALPHAMAP\n\tvAlphaMapUv = ( alphaMapTransform * vec3( ALPHAMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_LIGHTMAP\n\tvLightMapUv = ( lightMapTransform * vec3( LIGHTMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_AOMAP\n\tvAoMapUv = ( aoMapTransform * vec3( AOMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_BUMPMAP\n\tvBumpMapUv = ( bumpMapTransform * vec3( BUMPMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_NORMALMAP\n\tvNormalMapUv = ( normalMapTransform * vec3( NORMALMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_DISPLACEMENTMAP\n\tvDisplacementMapUv = ( displacementMapTransform * vec3( DISPLACEMENTMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_EMISSIVEMAP\n\tvEmissiveMapUv = ( emissiveMapTransform * vec3( EMISSIVEMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_METALNESSMAP\n\tvMetalnessMapUv = ( metalnessMapTransform * vec3( METALNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_ROUGHNESSMAP\n\tvRoughnessMapUv = ( roughnessMapTransform * vec3( ROUGHNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_ANISOTROPYMAP\n\tvAnisotropyMapUv = ( anisotropyMapTransform * vec3( ANISOTROPYMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_CLEARCOATMAP\n\tvClearcoatMapUv = ( clearcoatMapTransform * vec3( CLEARCOATMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_CLEARCOAT_NORMALMAP\n\tvClearcoatNormalMapUv = ( clearcoatNormalMapTransform * vec3( CLEARCOAT_NORMALMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_CLEARCOAT_ROUGHNESSMAP\n\tvClearcoatRoughnessMapUv = ( clearcoatRoughnessMapTransform * vec3( CLEARCOAT_ROUGHNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_IRIDESCENCEMAP\n\tvIridescenceMapUv = ( iridescenceMapTransform * vec3( IRIDESCENCEMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_IRIDESCENCE_THICKNESSMAP\n\tvIridescenceThicknessMapUv = ( iridescenceThicknessMapTransform * vec3( IRIDESCENCE_THICKNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SHEEN_COLORMAP\n\tvSheenColorMapUv = ( sheenColorMapTransform * vec3( SHEEN_COLORMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SHEEN_ROUGHNESSMAP\n\tvSheenRoughnessMapUv = ( sheenRoughnessMapTransform * vec3( SHEEN_ROUGHNESSMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SPECULARMAP\n\tvSpecularMapUv = ( specularMapTransform * vec3( SPECULARMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SPECULAR_COLORMAP\n\tvSpecularColorMapUv = ( specularColorMapTransform * vec3( SPECULAR_COLORMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_SPECULAR_INTENSITYMAP\n\tvSpecularIntensityMapUv = ( specularIntensityMapTransform * vec3( SPECULAR_INTENSITYMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_TRANSMISSIONMAP\n\tvTransmissionMapUv = ( transmissionMapTransform * vec3( TRANSMISSIONMAP_UV, 1 ) ).xy;\n#endif\n#ifdef USE_THICKNESSMAP\n\tvThicknessMapUv = ( thicknessMapTransform * vec3( THICKNESSMAP_UV, 1 ) ).xy;\n#endif";
+
+var worldpos_vertex = "#if defined( USE_ENVMAP ) || defined( DISTANCE ) || defined ( USE_SHADOWMAP ) || defined ( USE_TRANSMISSION ) || NUM_SPOT_LIGHT_COORDS > 0\n\tvec4 worldPosition = vec4( transformed, 1.0 );\n\t#ifdef USE_BATCHING\n\t\tworldPosition = batchingMatrix * worldPosition;\n\t#endif\n\t#ifdef USE_INSTANCING\n\t\tworldPosition = instanceMatrix * worldPosition;\n\t#endif\n\tworldPosition = modelMatrix * worldPosition;\n#endif";
+
+const vertex$h = "varying vec2 vUv;\nuniform mat3 uvTransform;\nvoid main() {\n\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\tgl_Position = vec4( position.xy, 1.0, 1.0 );\n}";
+
+const fragment$h = "uniform sampler2D t2D;\nuniform float backgroundIntensity;\nvarying vec2 vUv;\nvoid main() {\n\tvec4 texColor = texture2D( t2D, vUv );\n\t#ifdef DECODE_VIDEO_TEXTURE\n\t\ttexColor = vec4( mix( pow( texColor.rgb * 0.9478672986 + vec3( 0.0521327014 ), vec3( 2.4 ) ), texColor.rgb * 0.0773993808, vec3( lessThanEqual( texColor.rgb, vec3( 0.04045 ) ) ) ), texColor.w );\n\t#endif\n\ttexColor.rgb *= backgroundIntensity;\n\tgl_FragColor = texColor;\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n}";
+
+const vertex$g = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";
+
+const fragment$g = "#ifdef ENVMAP_TYPE_CUBE\n\tuniform samplerCube envMap;\n#elif defined( ENVMAP_TYPE_CUBE_UV )\n\tuniform sampler2D envMap;\n#endif\nuniform float flipEnvMap;\nuniform float backgroundBlurriness;\nuniform float backgroundIntensity;\nuniform mat3 backgroundRotation;\nvarying vec3 vWorldDirection;\n#include <cube_uv_reflection_fragment>\nvoid main() {\n\t#ifdef ENVMAP_TYPE_CUBE\n\t\tvec4 texColor = textureCube( envMap, backgroundRotation * vec3( flipEnvMap * vWorldDirection.x, vWorldDirection.yz ) );\n\t#elif defined( ENVMAP_TYPE_CUBE_UV )\n\t\tvec4 texColor = textureCubeUV( envMap, backgroundRotation * vWorldDirection, backgroundBlurriness );\n\t#else\n\t\tvec4 texColor = vec4( 0.0, 0.0, 0.0, 1.0 );\n\t#endif\n\ttexColor.rgb *= backgroundIntensity;\n\tgl_FragColor = texColor;\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n}";
+
+const vertex$f = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n\tgl_Position.z = gl_Position.w;\n}";
+
+const fragment$f = "uniform samplerCube tCube;\nuniform float tFlip;\nuniform float opacity;\nvarying vec3 vWorldDirection;\nvoid main() {\n\tvec4 texColor = textureCube( tCube, vec3( tFlip * vWorldDirection.x, vWorldDirection.yz ) );\n\tgl_FragColor = texColor;\n\tgl_FragColor.a *= opacity;\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n}";
+
+const vertex$e = "#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\t#include <uv_vertex>\n\t#include <batching_vertex>\n\t#include <skinbase_vertex>\n\t#include <morphinstance_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvHighPrecisionZW = gl_Position.zw;\n}";
+
+const fragment$e = "#if DEPTH_PACKING == 3200\n\tuniform float opacity;\n#endif\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvarying vec2 vHighPrecisionZW;\nvoid main() {\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <clipping_planes_fragment>\n\t#if DEPTH_PACKING == 3200\n\t\tdiffuseColor.a = opacity;\n\t#endif\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <alphahash_fragment>\n\t#include <logdepthbuf_fragment>\n\tfloat fragCoordZ = 0.5 * vHighPrecisionZW[0] / vHighPrecisionZW[1] + 0.5;\n\t#if DEPTH_PACKING == 3200\n\t\tgl_FragColor = vec4( vec3( 1.0 - fragCoordZ ), opacity );\n\t#elif DEPTH_PACKING == 3201\n\t\tgl_FragColor = packDepthToRGBA( fragCoordZ );\n\t#elif DEPTH_PACKING == 3202\n\t\tgl_FragColor = vec4( packDepthToRGB( fragCoordZ ), 1.0 );\n\t#elif DEPTH_PACKING == 3203\n\t\tgl_FragColor = vec4( packDepthToRG( fragCoordZ ), 0.0, 1.0 );\n\t#endif\n}";
+
+const vertex$d = "#define DISTANCE\nvarying vec3 vWorldPosition;\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <batching_vertex>\n\t#include <skinbase_vertex>\n\t#include <morphinstance_vertex>\n\t#ifdef USE_DISPLACEMENTMAP\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <worldpos_vertex>\n\t#include <clipping_planes_vertex>\n\tvWorldPosition = worldPosition.xyz;\n}";
+
+const fragment$d = "#define DISTANCE\nuniform vec3 referencePosition;\nuniform float nearDistance;\nuniform float farDistance;\nvarying vec3 vWorldPosition;\n#include <common>\n#include <packing>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main () {\n\tvec4 diffuseColor = vec4( 1.0 );\n\t#include <clipping_planes_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <alphahash_fragment>\n\tfloat dist = length( vWorldPosition - referencePosition );\n\tdist = ( dist - nearDistance ) / ( farDistance - nearDistance );\n\tdist = saturate( dist );\n\tgl_FragColor = packDepthToRGBA( dist );\n}";
+
+const vertex$c = "varying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvWorldDirection = transformDirection( position, modelMatrix );\n\t#include <begin_vertex>\n\t#include <project_vertex>\n}";
+
+const fragment$c = "uniform sampler2D tEquirect;\nvarying vec3 vWorldDirection;\n#include <common>\nvoid main() {\n\tvec3 direction = normalize( vWorldDirection );\n\tvec2 sampleUV = equirectUv( direction );\n\tgl_FragColor = texture2D( tEquirect, sampleUV );\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n}";
+
+const vertex$b = "uniform float scale;\nattribute float lineDistance;\nvarying float vLineDistance;\n#include <common>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\tvLineDistance = scale * lineDistance;\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphinstance_vertex>\n\t#include <morphcolor_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
+
+const fragment$b = "uniform vec3 diffuse;\nuniform float opacity;\nuniform float dashSize;\nuniform float totalSize;\nvarying float vLineDistance;\n#include <common>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <clipping_planes_fragment>\n\tif ( mod( vLineDistance, totalSize ) > dashSize ) {\n\t\tdiscard;\n\t}\n\tvec3 outgoingLight = vec3( 0.0 );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <opaque_fragment>\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";
+
+const vertex$a = "#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphinstance_vertex>\n\t#include <morphcolor_vertex>\n\t#include <batching_vertex>\n\t#if defined ( USE_ENVMAP ) || defined ( USE_SKINNING )\n\t\t#include <beginnormal_vertex>\n\t\t#include <morphnormal_vertex>\n\t\t#include <skinbase_vertex>\n\t\t#include <skinnormal_vertex>\n\t\t#include <defaultnormal_vertex>\n\t#endif\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <fog_vertex>\n}";
+
+const fragment$a = "uniform vec3 diffuse;\nuniform float opacity;\n#ifndef FLAT_SHADED\n\tvarying vec3 vNormal;\n#endif\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <alphahash_fragment>\n\t#include <specularmap_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\t#ifdef USE_LIGHTMAP\n\t\tvec4 lightMapTexel = texture2D( lightMap, vLightMapUv );\n\t\treflectedLight.indirectDiffuse += lightMapTexel.rgb * lightMapIntensity * RECIPROCAL_PI;\n\t#else\n\t\treflectedLight.indirectDiffuse += vec3( 1.0 );\n\t#endif\n\t#include <aomap_fragment>\n\treflectedLight.indirectDiffuse *= diffuseColor.rgb;\n\tvec3 outgoingLight = reflectedLight.indirectDiffuse;\n\t#include <envmap_fragment>\n\t#include <opaque_fragment>\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+const vertex$9 = "#define LAMBERT\nvarying vec3 vViewPosition;\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphinstance_vertex>\n\t#include <morphcolor_vertex>\n\t#include <batching_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
+
+const fragment$9 = "#define LAMBERT\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_lambert_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <clipping_planes_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <alphahash_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_lambert_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\t#include <opaque_fragment>\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+const vertex$8 = "#define MATCAP\nvarying vec3 vViewPosition;\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <color_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphinstance_vertex>\n\t#include <morphcolor_vertex>\n\t#include <batching_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n\tvViewPosition = - mvPosition.xyz;\n}";
+
+const fragment$8 = "#define MATCAP\nuniform vec3 diffuse;\nuniform float opacity;\nuniform sampler2D matcap;\nvarying vec3 vViewPosition;\n#include <common>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <fog_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <alphahash_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tvec3 viewDir = normalize( vViewPosition );\n\tvec3 x = normalize( vec3( viewDir.z, 0.0, - viewDir.x ) );\n\tvec3 y = cross( viewDir, x );\n\tvec2 uv = vec2( dot( x, normal ), dot( y, normal ) ) * 0.495 + 0.5;\n\t#ifdef USE_MATCAP\n\t\tvec4 matcapColor = texture2D( matcap, uv );\n\t#else\n\t\tvec4 matcapColor = vec4( vec3( mix( 0.2, 0.8, uv.y ) ), 1.0 );\n\t#endif\n\tvec3 outgoingLight = diffuseColor.rgb * matcapColor.rgb;\n\t#include <opaque_fragment>\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+const vertex$7 = "#define NORMAL\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\n\tvarying vec3 vViewPosition;\n#endif\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <batching_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphinstance_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\n\tvViewPosition = - mvPosition.xyz;\n#endif\n}";
+
+const fragment$7 = "#define NORMAL\nuniform float opacity;\n#if defined( FLAT_SHADED ) || defined( USE_BUMPMAP ) || defined( USE_NORMALMAP_TANGENTSPACE )\n\tvarying vec3 vViewPosition;\n#endif\n#include <packing>\n#include <uv_pars_fragment>\n#include <normal_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\tvec4 diffuseColor = vec4( 0.0, 0.0, 0.0, opacity );\n\t#include <clipping_planes_fragment>\n\t#include <logdepthbuf_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\tgl_FragColor = vec4( packNormalToRGB( normal ), diffuseColor.a );\n\t#ifdef OPAQUE\n\t\tgl_FragColor.a = 1.0;\n\t#endif\n}";
+
+const vertex$6 = "#define PHONG\nvarying vec3 vViewPosition;\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <envmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphcolor_vertex>\n\t#include <batching_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphinstance_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <envmap_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
+
+const fragment$6 = "#define PHONG\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform vec3 specular;\nuniform float shininess;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_phong_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <specularmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <clipping_planes_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <alphahash_fragment>\n\t#include <specularmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_phong_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + reflectedLight.directSpecular + reflectedLight.indirectSpecular + totalEmissiveRadiance;\n\t#include <envmap_fragment>\n\t#include <opaque_fragment>\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+const vertex$5 = "#define STANDARD\nvarying vec3 vViewPosition;\n#ifdef USE_TRANSMISSION\n\tvarying vec3 vWorldPosition;\n#endif\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphinstance_vertex>\n\t#include <morphcolor_vertex>\n\t#include <batching_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n#ifdef USE_TRANSMISSION\n\tvWorldPosition = worldPosition.xyz;\n#endif\n}";
+
+const fragment$5 = "#define STANDARD\n#ifdef PHYSICAL\n\t#define IOR\n\t#define USE_SPECULAR\n#endif\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float roughness;\nuniform float metalness;\nuniform float opacity;\n#ifdef IOR\n\tuniform float ior;\n#endif\n#ifdef USE_SPECULAR\n\tuniform float specularIntensity;\n\tuniform vec3 specularColor;\n\t#ifdef USE_SPECULAR_COLORMAP\n\t\tuniform sampler2D specularColorMap;\n\t#endif\n\t#ifdef USE_SPECULAR_INTENSITYMAP\n\t\tuniform sampler2D specularIntensityMap;\n\t#endif\n#endif\n#ifdef USE_CLEARCOAT\n\tuniform float clearcoat;\n\tuniform float clearcoatRoughness;\n#endif\n#ifdef USE_DISPERSION\n\tuniform float dispersion;\n#endif\n#ifdef USE_IRIDESCENCE\n\tuniform float iridescence;\n\tuniform float iridescenceIOR;\n\tuniform float iridescenceThicknessMinimum;\n\tuniform float iridescenceThicknessMaximum;\n#endif\n#ifdef USE_SHEEN\n\tuniform vec3 sheenColor;\n\tuniform float sheenRoughness;\n\t#ifdef USE_SHEEN_COLORMAP\n\t\tuniform sampler2D sheenColorMap;\n\t#endif\n\t#ifdef USE_SHEEN_ROUGHNESSMAP\n\t\tuniform sampler2D sheenRoughnessMap;\n\t#endif\n#endif\n#ifdef USE_ANISOTROPY\n\tuniform vec2 anisotropyVector;\n\t#ifdef USE_ANISOTROPYMAP\n\t\tuniform sampler2D anisotropyMap;\n\t#endif\n#endif\nvarying vec3 vViewPosition;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <iridescence_fragment>\n#include <cube_uv_reflection_fragment>\n#include <envmap_common_pars_fragment>\n#include <envmap_physical_pars_fragment>\n#include <fog_pars_fragment>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_physical_pars_fragment>\n#include <transmission_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <clearcoat_pars_fragment>\n#include <iridescence_pars_fragment>\n#include <roughnessmap_pars_fragment>\n#include <metalnessmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <clipping_planes_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <alphahash_fragment>\n\t#include <roughnessmap_fragment>\n\t#include <metalnessmap_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <clearcoat_normal_fragment_begin>\n\t#include <clearcoat_normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_physical_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 totalDiffuse = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse;\n\tvec3 totalSpecular = reflectedLight.directSpecular + reflectedLight.indirectSpecular;\n\t#include <transmission_fragment>\n\tvec3 outgoingLight = totalDiffuse + totalSpecular + totalEmissiveRadiance;\n\t#ifdef USE_SHEEN\n\t\tfloat sheenEnergyComp = 1.0 - 0.157 * max3( material.sheenColor );\n\t\toutgoingLight = outgoingLight * sheenEnergyComp + sheenSpecularDirect + sheenSpecularIndirect;\n\t#endif\n\t#ifdef USE_CLEARCOAT\n\t\tfloat dotNVcc = saturate( dot( geometryClearcoatNormal, geometryViewDir ) );\n\t\tvec3 Fcc = F_Schlick( material.clearcoatF0, material.clearcoatF90, dotNVcc );\n\t\toutgoingLight = outgoingLight * ( 1.0 - material.clearcoat * Fcc ) + ( clearcoatSpecularDirect + clearcoatSpecularIndirect ) * material.clearcoat;\n\t#endif\n\t#include <opaque_fragment>\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+const vertex$4 = "#define TOON\nvarying vec3 vViewPosition;\n#include <common>\n#include <batching_pars_vertex>\n#include <uv_pars_vertex>\n#include <displacementmap_pars_vertex>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <normal_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <shadowmap_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\t#include <color_vertex>\n\t#include <morphinstance_vertex>\n\t#include <morphcolor_vertex>\n\t#include <batching_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <normal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <displacementmap_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\tvViewPosition = - mvPosition.xyz;\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
+
+const fragment$4 = "#define TOON\nuniform vec3 diffuse;\nuniform vec3 emissive;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <dithering_pars_fragment>\n#include <color_pars_fragment>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <aomap_pars_fragment>\n#include <lightmap_pars_fragment>\n#include <emissivemap_pars_fragment>\n#include <gradientmap_pars_fragment>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <normal_pars_fragment>\n#include <lights_toon_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <bumpmap_pars_fragment>\n#include <normalmap_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <clipping_planes_fragment>\n\tReflectedLight reflectedLight = ReflectedLight( vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ), vec3( 0.0 ) );\n\tvec3 totalEmissiveRadiance = emissive;\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <color_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <alphahash_fragment>\n\t#include <normal_fragment_begin>\n\t#include <normal_fragment_maps>\n\t#include <emissivemap_fragment>\n\t#include <lights_toon_fragment>\n\t#include <lights_fragment_begin>\n\t#include <lights_fragment_maps>\n\t#include <lights_fragment_end>\n\t#include <aomap_fragment>\n\tvec3 outgoingLight = reflectedLight.directDiffuse + reflectedLight.indirectDiffuse + totalEmissiveRadiance;\n\t#include <opaque_fragment>\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n\t#include <dithering_fragment>\n}";
+
+const vertex$3 = "uniform float size;\nuniform float scale;\n#include <common>\n#include <color_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\n#ifdef USE_POINTS_UV\n\tvarying vec2 vUv;\n\tuniform mat3 uvTransform;\n#endif\nvoid main() {\n\t#ifdef USE_POINTS_UV\n\t\tvUv = ( uvTransform * vec3( uv, 1 ) ).xy;\n\t#endif\n\t#include <color_vertex>\n\t#include <morphinstance_vertex>\n\t#include <morphcolor_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <project_vertex>\n\tgl_PointSize = size;\n\t#ifdef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) gl_PointSize *= ( scale / - mvPosition.z );\n\t#endif\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <worldpos_vertex>\n\t#include <fog_vertex>\n}";
+
+const fragment$3 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <color_pars_fragment>\n#include <map_particle_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\t#include <logdepthbuf_fragment>\n\t#include <map_particle_fragment>\n\t#include <color_fragment>\n\t#include <alphatest_fragment>\n\t#include <alphahash_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <opaque_fragment>\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n\t#include <fog_fragment>\n\t#include <premultiplied_alpha_fragment>\n}";
+
+const vertex$2 = "#include <common>\n#include <batching_pars_vertex>\n#include <fog_pars_vertex>\n#include <morphtarget_pars_vertex>\n#include <skinning_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <shadowmap_pars_vertex>\nvoid main() {\n\t#include <batching_vertex>\n\t#include <beginnormal_vertex>\n\t#include <morphinstance_vertex>\n\t#include <morphnormal_vertex>\n\t#include <skinbase_vertex>\n\t#include <skinnormal_vertex>\n\t#include <defaultnormal_vertex>\n\t#include <begin_vertex>\n\t#include <morphtarget_vertex>\n\t#include <skinning_vertex>\n\t#include <project_vertex>\n\t#include <logdepthbuf_vertex>\n\t#include <worldpos_vertex>\n\t#include <shadowmap_vertex>\n\t#include <fog_vertex>\n}";
+
+const fragment$2 = "uniform vec3 color;\nuniform float opacity;\n#include <common>\n#include <packing>\n#include <fog_pars_fragment>\n#include <bsdfs>\n#include <lights_pars_begin>\n#include <logdepthbuf_pars_fragment>\n#include <shadowmap_pars_fragment>\n#include <shadowmask_pars_fragment>\nvoid main() {\n\t#include <logdepthbuf_fragment>\n\tgl_FragColor = vec4( color, opacity * ( 1.0 - getShadowMask() ) );\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n\t#include <fog_fragment>\n}";
+
+const vertex$1 = "uniform float rotation;\nuniform vec2 center;\n#include <common>\n#include <uv_pars_vertex>\n#include <fog_pars_vertex>\n#include <logdepthbuf_pars_vertex>\n#include <clipping_planes_pars_vertex>\nvoid main() {\n\t#include <uv_vertex>\n\tvec4 mvPosition = modelViewMatrix * vec4( 0.0, 0.0, 0.0, 1.0 );\n\tvec2 scale;\n\tscale.x = length( vec3( modelMatrix[ 0 ].x, modelMatrix[ 0 ].y, modelMatrix[ 0 ].z ) );\n\tscale.y = length( vec3( modelMatrix[ 1 ].x, modelMatrix[ 1 ].y, modelMatrix[ 1 ].z ) );\n\t#ifndef USE_SIZEATTENUATION\n\t\tbool isPerspective = isPerspectiveMatrix( projectionMatrix );\n\t\tif ( isPerspective ) scale *= - mvPosition.z;\n\t#endif\n\tvec2 alignedPosition = ( position.xy - ( center - vec2( 0.5 ) ) ) * scale;\n\tvec2 rotatedPosition;\n\trotatedPosition.x = cos( rotation ) * alignedPosition.x - sin( rotation ) * alignedPosition.y;\n\trotatedPosition.y = sin( rotation ) * alignedPosition.x + cos( rotation ) * alignedPosition.y;\n\tmvPosition.xy += rotatedPosition;\n\tgl_Position = projectionMatrix * mvPosition;\n\t#include <logdepthbuf_vertex>\n\t#include <clipping_planes_vertex>\n\t#include <fog_vertex>\n}";
+
+const fragment$1 = "uniform vec3 diffuse;\nuniform float opacity;\n#include <common>\n#include <uv_pars_fragment>\n#include <map_pars_fragment>\n#include <alphamap_pars_fragment>\n#include <alphatest_pars_fragment>\n#include <alphahash_pars_fragment>\n#include <fog_pars_fragment>\n#include <logdepthbuf_pars_fragment>\n#include <clipping_planes_pars_fragment>\nvoid main() {\n\tvec4 diffuseColor = vec4( diffuse, opacity );\n\t#include <clipping_planes_fragment>\n\tvec3 outgoingLight = vec3( 0.0 );\n\t#include <logdepthbuf_fragment>\n\t#include <map_fragment>\n\t#include <alphamap_fragment>\n\t#include <alphatest_fragment>\n\t#include <alphahash_fragment>\n\toutgoingLight = diffuseColor.rgb;\n\t#include <opaque_fragment>\n\t#include <tonemapping_fragment>\n\t#include <colorspace_fragment>\n\t#include <fog_fragment>\n}";
+
+const ShaderChunk = {
+	alphahash_fragment: alphahash_fragment,
+	alphahash_pars_fragment: alphahash_pars_fragment,
+	alphamap_fragment: alphamap_fragment,
+	alphamap_pars_fragment: alphamap_pars_fragment,
+	alphatest_fragment: alphatest_fragment,
+	alphatest_pars_fragment: alphatest_pars_fragment,
+	aomap_fragment: aomap_fragment,
+	aomap_pars_fragment: aomap_pars_fragment,
+	batching_pars_vertex: batching_pars_vertex,
+	batching_vertex: batching_vertex,
+	begin_vertex: begin_vertex,
+	beginnormal_vertex: beginnormal_vertex,
+	bsdfs: bsdfs,
+	iridescence_fragment: iridescence_fragment,
+	bumpmap_pars_fragment: bumpmap_pars_fragment,
+	clipping_planes_fragment: clipping_planes_fragment,
+	clipping_planes_pars_fragment: clipping_planes_pars_fragment,
+	clipping_planes_pars_vertex: clipping_planes_pars_vertex,
+	clipping_planes_vertex: clipping_planes_vertex,
+	color_fragment: color_fragment,
+	color_pars_fragment: color_pars_fragment,
+	color_pars_vertex: color_pars_vertex,
+	color_vertex: color_vertex,
+	common: common,
+	cube_uv_reflection_fragment: cube_uv_reflection_fragment,
+	defaultnormal_vertex: defaultnormal_vertex,
+	displacementmap_pars_vertex: displacementmap_pars_vertex,
+	displacementmap_vertex: displacementmap_vertex,
+	emissivemap_fragment: emissivemap_fragment,
+	emissivemap_pars_fragment: emissivemap_pars_fragment,
+	colorspace_fragment: colorspace_fragment,
+	colorspace_pars_fragment: colorspace_pars_fragment,
+	envmap_fragment: envmap_fragment,
+	envmap_common_pars_fragment: envmap_common_pars_fragment,
+	envmap_pars_fragment: envmap_pars_fragment,
+	envmap_pars_vertex: envmap_pars_vertex,
+	envmap_physical_pars_fragment: envmap_physical_pars_fragment,
+	envmap_vertex: envmap_vertex,
+	fog_vertex: fog_vertex,
+	fog_pars_vertex: fog_pars_vertex,
+	fog_fragment: fog_fragment,
+	fog_pars_fragment: fog_pars_fragment,
+	gradientmap_pars_fragment: gradientmap_pars_fragment,
+	lightmap_pars_fragment: lightmap_pars_fragment,
+	lights_lambert_fragment: lights_lambert_fragment,
+	lights_lambert_pars_fragment: lights_lambert_pars_fragment,
+	lights_pars_begin: lights_pars_begin,
+	lights_toon_fragment: lights_toon_fragment,
+	lights_toon_pars_fragment: lights_toon_pars_fragment,
+	lights_phong_fragment: lights_phong_fragment,
+	lights_phong_pars_fragment: lights_phong_pars_fragment,
+	lights_physical_fragment: lights_physical_fragment,
+	lights_physical_pars_fragment: lights_physical_pars_fragment,
+	lights_fragment_begin: lights_fragment_begin,
+	lights_fragment_maps: lights_fragment_maps,
+	lights_fragment_end: lights_fragment_end,
+	logdepthbuf_fragment: logdepthbuf_fragment,
+	logdepthbuf_pars_fragment: logdepthbuf_pars_fragment,
+	logdepthbuf_pars_vertex: logdepthbuf_pars_vertex,
+	logdepthbuf_vertex: logdepthbuf_vertex,
+	map_fragment: map_fragment,
+	map_pars_fragment: map_pars_fragment,
+	map_particle_fragment: map_particle_fragment,
+	map_particle_pars_fragment: map_particle_pars_fragment,
+	metalnessmap_fragment: metalnessmap_fragment,
+	metalnessmap_pars_fragment: metalnessmap_pars_fragment,
+	morphinstance_vertex: morphinstance_vertex,
+	morphcolor_vertex: morphcolor_vertex,
+	morphnormal_vertex: morphnormal_vertex,
+	morphtarget_pars_vertex: morphtarget_pars_vertex,
+	morphtarget_vertex: morphtarget_vertex,
+	normal_fragment_begin: normal_fragment_begin,
+	normal_fragment_maps: normal_fragment_maps,
+	normal_pars_fragment: normal_pars_fragment,
+	normal_pars_vertex: normal_pars_vertex,
+	normal_vertex: normal_vertex,
+	normalmap_pars_fragment: normalmap_pars_fragment,
+	clearcoat_normal_fragment_begin: clearcoat_normal_fragment_begin,
+	clearcoat_normal_fragment_maps: clearcoat_normal_fragment_maps,
+	clearcoat_pars_fragment: clearcoat_pars_fragment,
+	iridescence_pars_fragment: iridescence_pars_fragment,
+	opaque_fragment: opaque_fragment,
+	packing: packing,
+	premultiplied_alpha_fragment: premultiplied_alpha_fragment,
+	project_vertex: project_vertex,
+	dithering_fragment: dithering_fragment,
+	dithering_pars_fragment: dithering_pars_fragment,
+	roughnessmap_fragment: roughnessmap_fragment,
+	roughnessmap_pars_fragment: roughnessmap_pars_fragment,
+	shadowmap_pars_fragment: shadowmap_pars_fragment,
+	shadowmap_pars_vertex: shadowmap_pars_vertex,
+	shadowmap_vertex: shadowmap_vertex,
+	shadowmask_pars_fragment: shadowmask_pars_fragment,
+	skinbase_vertex: skinbase_vertex,
+	skinning_pars_vertex: skinning_pars_vertex,
+	skinning_vertex: skinning_vertex,
+	skinnormal_vertex: skinnormal_vertex,
+	specularmap_fragment: specularmap_fragment,
+	specularmap_pars_fragment: specularmap_pars_fragment,
+	tonemapping_fragment: tonemapping_fragment,
+	tonemapping_pars_fragment: tonemapping_pars_fragment,
+	transmission_fragment: transmission_fragment,
+	transmission_pars_fragment: transmission_pars_fragment,
+	uv_pars_fragment: uv_pars_fragment,
+	uv_pars_vertex: uv_pars_vertex,
+	uv_vertex: uv_vertex,
+	worldpos_vertex: worldpos_vertex,
+
+	background_vert: vertex$h,
+	background_frag: fragment$h,
+	backgroundCube_vert: vertex$g,
+	backgroundCube_frag: fragment$g,
+	cube_vert: vertex$f,
+	cube_frag: fragment$f,
+	depth_vert: vertex$e,
+	depth_frag: fragment$e,
+	distanceRGBA_vert: vertex$d,
+	distanceRGBA_frag: fragment$d,
+	equirect_vert: vertex$c,
+	equirect_frag: fragment$c,
+	linedashed_vert: vertex$b,
+	linedashed_frag: fragment$b,
+	meshbasic_vert: vertex$a,
+	meshbasic_frag: fragment$a,
+	meshlambert_vert: vertex$9,
+	meshlambert_frag: fragment$9,
+	meshmatcap_vert: vertex$8,
+	meshmatcap_frag: fragment$8,
+	meshnormal_vert: vertex$7,
+	meshnormal_frag: fragment$7,
+	meshphong_vert: vertex$6,
+	meshphong_frag: fragment$6,
+	meshphysical_vert: vertex$5,
+	meshphysical_frag: fragment$5,
+	meshtoon_vert: vertex$4,
+	meshtoon_frag: fragment$4,
+	points_vert: vertex$3,
+	points_frag: fragment$3,
+	shadow_vert: vertex$2,
+	shadow_frag: fragment$2,
+	sprite_vert: vertex$1,
+	sprite_frag: fragment$1
+};
+
+/**
+ * Uniforms library for shared webgl shaders
+ */
+
+const UniformsLib = {
+
+	common: {
+
+		diffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },
+		opacity: { value: 1.0 },
+
+		map: { value: null },
+		mapTransform: { value: /*@__PURE__*/ new Matrix3() },
+
+		alphaMap: { value: null },
+		alphaMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+
+		alphaTest: { value: 0 }
+
+	},
+
+	specularmap: {
+
+		specularMap: { value: null },
+		specularMapTransform: { value: /*@__PURE__*/ new Matrix3() }
+
+	},
+
+	envmap: {
+
+		envMap: { value: null },
+		envMapRotation: { value: /*@__PURE__*/ new Matrix3() },
+		flipEnvMap: { value: - 1 },
+		reflectivity: { value: 1.0 }, // basic, lambert, phong
+		ior: { value: 1.5 }, // physical
+		refractionRatio: { value: 0.98 }, // basic, lambert, phong
+
+	},
+
+	aomap: {
+
+		aoMap: { value: null },
+		aoMapIntensity: { value: 1 },
+		aoMapTransform: { value: /*@__PURE__*/ new Matrix3() }
+
+	},
+
+	lightmap: {
+
+		lightMap: { value: null },
+		lightMapIntensity: { value: 1 },
+		lightMapTransform: { value: /*@__PURE__*/ new Matrix3() }
+
+	},
+
+	bumpmap: {
+
+		bumpMap: { value: null },
+		bumpMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+		bumpScale: { value: 1 }
+
+	},
+
+	normalmap: {
+
+		normalMap: { value: null },
+		normalMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+		normalScale: { value: /*@__PURE__*/ new Vector2( 1, 1 ) }
+
+	},
+
+	displacementmap: {
+
+		displacementMap: { value: null },
+		displacementMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+		displacementScale: { value: 1 },
+		displacementBias: { value: 0 }
+
+	},
+
+	emissivemap: {
+
+		emissiveMap: { value: null },
+		emissiveMapTransform: { value: /*@__PURE__*/ new Matrix3() }
+
+	},
+
+	metalnessmap: {
+
+		metalnessMap: { value: null },
+		metalnessMapTransform: { value: /*@__PURE__*/ new Matrix3() }
+
+	},
+
+	roughnessmap: {
+
+		roughnessMap: { value: null },
+		roughnessMapTransform: { value: /*@__PURE__*/ new Matrix3() }
+
+	},
+
+	gradientmap: {
+
+		gradientMap: { value: null }
+
+	},
+
+	fog: {
+
+		fogDensity: { value: 0.00025 },
+		fogNear: { value: 1 },
+		fogFar: { value: 2000 },
+		fogColor: { value: /*@__PURE__*/ new Color( 0xffffff ) }
+
+	},
+
+	lights: {
+
+		ambientLightColor: { value: [] },
+
+		lightProbe: { value: [] },
+
+		directionalLights: { value: [], properties: {
+			direction: {},
+			color: {}
+		} },
+
+		directionalLightShadows: { value: [], properties: {
+			shadowIntensity: 1,
+			shadowBias: {},
+			shadowNormalBias: {},
+			shadowRadius: {},
+			shadowMapSize: {}
+		} },
+
+		directionalShadowMap: { value: [] },
+		directionalShadowMatrix: { value: [] },
+
+		spotLights: { value: [], properties: {
+			color: {},
+			position: {},
+			direction: {},
+			distance: {},
+			coneCos: {},
+			penumbraCos: {},
+			decay: {}
+		} },
+
+		spotLightShadows: { value: [], properties: {
+			shadowIntensity: 1,
+			shadowBias: {},
+			shadowNormalBias: {},
+			shadowRadius: {},
+			shadowMapSize: {}
+		} },
+
+		spotLightMap: { value: [] },
+		spotShadowMap: { value: [] },
+		spotLightMatrix: { value: [] },
+
+		pointLights: { value: [], properties: {
+			color: {},
+			position: {},
+			decay: {},
+			distance: {}
+		} },
+
+		pointLightShadows: { value: [], properties: {
+			shadowIntensity: 1,
+			shadowBias: {},
+			shadowNormalBias: {},
+			shadowRadius: {},
+			shadowMapSize: {},
+			shadowCameraNear: {},
+			shadowCameraFar: {}
+		} },
+
+		pointShadowMap: { value: [] },
+		pointShadowMatrix: { value: [] },
+
+		hemisphereLights: { value: [], properties: {
+			direction: {},
+			skyColor: {},
+			groundColor: {}
+		} },
+
+		// TODO (abelnation): RectAreaLight BRDF data needs to be moved from example to main src
+		rectAreaLights: { value: [], properties: {
+			color: {},
+			position: {},
+			width: {},
+			height: {}
+		} },
+
+		ltc_1: { value: null },
+		ltc_2: { value: null }
+
+	},
+
+	points: {
+
+		diffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },
+		opacity: { value: 1.0 },
+		size: { value: 1.0 },
+		scale: { value: 1.0 },
+		map: { value: null },
+		alphaMap: { value: null },
+		alphaMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+		alphaTest: { value: 0 },
+		uvTransform: { value: /*@__PURE__*/ new Matrix3() }
+
+	},
+
+	sprite: {
+
+		diffuse: { value: /*@__PURE__*/ new Color( 0xffffff ) },
+		opacity: { value: 1.0 },
+		center: { value: /*@__PURE__*/ new Vector2( 0.5, 0.5 ) },
+		rotation: { value: 0.0 },
+		map: { value: null },
+		mapTransform: { value: /*@__PURE__*/ new Matrix3() },
+		alphaMap: { value: null },
+		alphaMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+		alphaTest: { value: 0 }
+
+	}
+
+};
+
+const ShaderLib = {
+
+	basic: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.common,
+			UniformsLib.specularmap,
+			UniformsLib.envmap,
+			UniformsLib.aomap,
+			UniformsLib.lightmap,
+			UniformsLib.fog
+		] ),
+
+		vertexShader: ShaderChunk.meshbasic_vert,
+		fragmentShader: ShaderChunk.meshbasic_frag
+
+	},
+
+	lambert: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.common,
+			UniformsLib.specularmap,
+			UniformsLib.envmap,
+			UniformsLib.aomap,
+			UniformsLib.lightmap,
+			UniformsLib.emissivemap,
+			UniformsLib.bumpmap,
+			UniformsLib.normalmap,
+			UniformsLib.displacementmap,
+			UniformsLib.fog,
+			UniformsLib.lights,
+			{
+				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) }
+			}
+		] ),
+
+		vertexShader: ShaderChunk.meshlambert_vert,
+		fragmentShader: ShaderChunk.meshlambert_frag
+
+	},
+
+	phong: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.common,
+			UniformsLib.specularmap,
+			UniformsLib.envmap,
+			UniformsLib.aomap,
+			UniformsLib.lightmap,
+			UniformsLib.emissivemap,
+			UniformsLib.bumpmap,
+			UniformsLib.normalmap,
+			UniformsLib.displacementmap,
+			UniformsLib.fog,
+			UniformsLib.lights,
+			{
+				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) },
+				specular: { value: /*@__PURE__*/ new Color( 0x111111 ) },
+				shininess: { value: 30 }
+			}
+		] ),
+
+		vertexShader: ShaderChunk.meshphong_vert,
+		fragmentShader: ShaderChunk.meshphong_frag
+
+	},
+
+	standard: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.common,
+			UniformsLib.envmap,
+			UniformsLib.aomap,
+			UniformsLib.lightmap,
+			UniformsLib.emissivemap,
+			UniformsLib.bumpmap,
+			UniformsLib.normalmap,
+			UniformsLib.displacementmap,
+			UniformsLib.roughnessmap,
+			UniformsLib.metalnessmap,
+			UniformsLib.fog,
+			UniformsLib.lights,
+			{
+				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) },
+				roughness: { value: 1.0 },
+				metalness: { value: 0.0 },
+				envMapIntensity: { value: 1 }
+			}
+		] ),
+
+		vertexShader: ShaderChunk.meshphysical_vert,
+		fragmentShader: ShaderChunk.meshphysical_frag
+
+	},
+
+	toon: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.common,
+			UniformsLib.aomap,
+			UniformsLib.lightmap,
+			UniformsLib.emissivemap,
+			UniformsLib.bumpmap,
+			UniformsLib.normalmap,
+			UniformsLib.displacementmap,
+			UniformsLib.gradientmap,
+			UniformsLib.fog,
+			UniformsLib.lights,
+			{
+				emissive: { value: /*@__PURE__*/ new Color( 0x000000 ) }
+			}
+		] ),
+
+		vertexShader: ShaderChunk.meshtoon_vert,
+		fragmentShader: ShaderChunk.meshtoon_frag
+
+	},
+
+	matcap: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.common,
+			UniformsLib.bumpmap,
+			UniformsLib.normalmap,
+			UniformsLib.displacementmap,
+			UniformsLib.fog,
+			{
+				matcap: { value: null }
+			}
+		] ),
+
+		vertexShader: ShaderChunk.meshmatcap_vert,
+		fragmentShader: ShaderChunk.meshmatcap_frag
+
+	},
+
+	points: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.points,
+			UniformsLib.fog
+		] ),
+
+		vertexShader: ShaderChunk.points_vert,
+		fragmentShader: ShaderChunk.points_frag
+
+	},
+
+	dashed: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.common,
+			UniformsLib.fog,
+			{
+				scale: { value: 1 },
+				dashSize: { value: 1 },
+				totalSize: { value: 2 }
+			}
+		] ),
+
+		vertexShader: ShaderChunk.linedashed_vert,
+		fragmentShader: ShaderChunk.linedashed_frag
+
+	},
+
+	depth: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.common,
+			UniformsLib.displacementmap
+		] ),
+
+		vertexShader: ShaderChunk.depth_vert,
+		fragmentShader: ShaderChunk.depth_frag
+
+	},
+
+	normal: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.common,
+			UniformsLib.bumpmap,
+			UniformsLib.normalmap,
+			UniformsLib.displacementmap,
+			{
+				opacity: { value: 1.0 }
+			}
+		] ),
+
+		vertexShader: ShaderChunk.meshnormal_vert,
+		fragmentShader: ShaderChunk.meshnormal_frag
+
+	},
+
+	sprite: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.sprite,
+			UniformsLib.fog
+		] ),
+
+		vertexShader: ShaderChunk.sprite_vert,
+		fragmentShader: ShaderChunk.sprite_frag
+
+	},
+
+	background: {
+
+		uniforms: {
+			uvTransform: { value: /*@__PURE__*/ new Matrix3() },
+			t2D: { value: null },
+			backgroundIntensity: { value: 1 }
+		},
+
+		vertexShader: ShaderChunk.background_vert,
+		fragmentShader: ShaderChunk.background_frag
+
+	},
+
+	backgroundCube: {
+
+		uniforms: {
+			envMap: { value: null },
+			flipEnvMap: { value: - 1 },
+			backgroundBlurriness: { value: 0 },
+			backgroundIntensity: { value: 1 },
+			backgroundRotation: { value: /*@__PURE__*/ new Matrix3() }
+		},
+
+		vertexShader: ShaderChunk.backgroundCube_vert,
+		fragmentShader: ShaderChunk.backgroundCube_frag
+
+	},
+
+	cube: {
+
+		uniforms: {
+			tCube: { value: null },
+			tFlip: { value: - 1 },
+			opacity: { value: 1.0 }
+		},
+
+		vertexShader: ShaderChunk.cube_vert,
+		fragmentShader: ShaderChunk.cube_frag
+
+	},
+
+	equirect: {
+
+		uniforms: {
+			tEquirect: { value: null },
+		},
+
+		vertexShader: ShaderChunk.equirect_vert,
+		fragmentShader: ShaderChunk.equirect_frag
+
+	},
+
+	distanceRGBA: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.common,
+			UniformsLib.displacementmap,
+			{
+				referencePosition: { value: /*@__PURE__*/ new Vector3() },
+				nearDistance: { value: 1 },
+				farDistance: { value: 1000 }
+			}
+		] ),
+
+		vertexShader: ShaderChunk.distanceRGBA_vert,
+		fragmentShader: ShaderChunk.distanceRGBA_frag
+
+	},
+
+	shadow: {
+
+		uniforms: /*@__PURE__*/ mergeUniforms( [
+			UniformsLib.lights,
+			UniformsLib.fog,
+			{
+				color: { value: /*@__PURE__*/ new Color( 0x00000 ) },
+				opacity: { value: 1.0 }
+			},
+		] ),
+
+		vertexShader: ShaderChunk.shadow_vert,
+		fragmentShader: ShaderChunk.shadow_frag
+
+	}
+
+};
+
+ShaderLib.physical = {
+
+	uniforms: /*@__PURE__*/ mergeUniforms( [
+		ShaderLib.standard.uniforms,
+		{
+			clearcoat: { value: 0 },
+			clearcoatMap: { value: null },
+			clearcoatMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			clearcoatNormalMap: { value: null },
+			clearcoatNormalMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			clearcoatNormalScale: { value: /*@__PURE__*/ new Vector2( 1, 1 ) },
+			clearcoatRoughness: { value: 0 },
+			clearcoatRoughnessMap: { value: null },
+			clearcoatRoughnessMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			dispersion: { value: 0 },
+			iridescence: { value: 0 },
+			iridescenceMap: { value: null },
+			iridescenceMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			iridescenceIOR: { value: 1.3 },
+			iridescenceThicknessMinimum: { value: 100 },
+			iridescenceThicknessMaximum: { value: 400 },
+			iridescenceThicknessMap: { value: null },
+			iridescenceThicknessMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			sheen: { value: 0 },
+			sheenColor: { value: /*@__PURE__*/ new Color( 0x000000 ) },
+			sheenColorMap: { value: null },
+			sheenColorMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			sheenRoughness: { value: 1 },
+			sheenRoughnessMap: { value: null },
+			sheenRoughnessMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			transmission: { value: 0 },
+			transmissionMap: { value: null },
+			transmissionMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			transmissionSamplerSize: { value: /*@__PURE__*/ new Vector2() },
+			transmissionSamplerMap: { value: null },
+			thickness: { value: 0 },
+			thicknessMap: { value: null },
+			thicknessMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			attenuationDistance: { value: 0 },
+			attenuationColor: { value: /*@__PURE__*/ new Color( 0x000000 ) },
+			specularColor: { value: /*@__PURE__*/ new Color( 1, 1, 1 ) },
+			specularColorMap: { value: null },
+			specularColorMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			specularIntensity: { value: 1 },
+			specularIntensityMap: { value: null },
+			specularIntensityMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+			anisotropyVector: { value: /*@__PURE__*/ new Vector2() },
+			anisotropyMap: { value: null },
+			anisotropyMapTransform: { value: /*@__PURE__*/ new Matrix3() },
+		}
+	] ),
+
+	vertexShader: ShaderChunk.meshphysical_vert,
+	fragmentShader: ShaderChunk.meshphysical_frag
+
+};
+
+const _rgb = { r: 0, b: 0, g: 0 };
+const _e1$1 = /*@__PURE__*/ new Euler();
+const _m1$1 = /*@__PURE__*/ new Matrix4();
+
+function WebGLBackground( renderer, cubemaps, cubeuvmaps, state, objects, alpha, premultipliedAlpha ) {
+
+	const clearColor = new Color( 0x000000 );
+	let clearAlpha = alpha === true ? 0 : 1;
+
+	let planeMesh;
+	let boxMesh;
+
+	let currentBackground = null;
+	let currentBackgroundVersion = 0;
+	let currentTonemapping = null;
+
+	function getBackground( scene ) {
+
+		let background = scene.isScene === true ? scene.background : null;
+
+		if ( background && background.isTexture ) {
+
+			const usePMREM = scene.backgroundBlurriness > 0; // use PMREM if the user wants to blur the background
+			background = ( usePMREM ? cubeuvmaps : cubemaps ).get( background );
+
+		}
+
+		return background;
+
+	}
+
+	function render( scene ) {
+
+		let forceClear = false;
+		const background = getBackground( scene );
+
+		if ( background === null ) {
+
+			setClear( clearColor, clearAlpha );
+
+		} else if ( background && background.isColor ) {
+
+			setClear( background, 1 );
+			forceClear = true;
+
+		}
+
+		const environmentBlendMode = renderer.xr.getEnvironmentBlendMode();
+
+		if ( environmentBlendMode === 'additive' ) {
+
+			state.buffers.color.setClear( 0, 0, 0, 1, premultipliedAlpha );
+
+		} else if ( environmentBlendMode === 'alpha-blend' ) {
+
+			state.buffers.color.setClear( 0, 0, 0, 0, premultipliedAlpha );
+
+		}
+
+		if ( renderer.autoClear || forceClear ) {
+
+			// buffers might not be writable which is required to ensure a correct clear
+
+			state.buffers.depth.setTest( true );
+			state.buffers.depth.setMask( true );
+			state.buffers.color.setMask( true );
+
+			renderer.clear( renderer.autoClearColor, renderer.autoClearDepth, renderer.autoClearStencil );
+
+		}
+
+	}
+
+	function addToRenderList( renderList, scene ) {
+
+		const background = getBackground( scene );
+
+		if ( background && ( background.isCubeTexture || background.mapping === CubeUVReflectionMapping ) ) {
+
+			if ( boxMesh === undefined ) {
+
+				boxMesh = new Mesh(
+					new BoxGeometry( 1, 1, 1 ),
+					new ShaderMaterial( {
+						name: 'BackgroundCubeMaterial',
+						uniforms: cloneUniforms( ShaderLib.backgroundCube.uniforms ),
+						vertexShader: ShaderLib.backgroundCube.vertexShader,
+						fragmentShader: ShaderLib.backgroundCube.fragmentShader,
+						side: BackSide,
+						depthTest: false,
+						depthWrite: false,
+						fog: false
+					} )
+				);
+
+				boxMesh.geometry.deleteAttribute( 'normal' );
+				boxMesh.geometry.deleteAttribute( 'uv' );
+
+				boxMesh.onBeforeRender = function ( renderer, scene, camera ) {
+
+					this.matrixWorld.copyPosition( camera.matrixWorld );
+
+				};
+
+				// add "envMap" material property so the renderer can evaluate it like for built-in materials
+				Object.defineProperty( boxMesh.material, 'envMap', {
+
+					get: function () {
+
+						return this.uniforms.envMap.value;
+
+					}
+
+				} );
+
+				objects.update( boxMesh );
+
+			}
+
+			_e1$1.copy( scene.backgroundRotation );
+
+			// accommodate left-handed frame
+			_e1$1.x *= - 1; _e1$1.y *= - 1; _e1$1.z *= - 1;
+
+			if ( background.isCubeTexture && background.isRenderTargetTexture === false ) {
+
+				// environment maps which are not cube render targets or PMREMs follow a different convention
+				_e1$1.y *= - 1;
+				_e1$1.z *= - 1;
+
+			}
+
+			boxMesh.material.uniforms.envMap.value = background;
+			boxMesh.material.uniforms.flipEnvMap.value = ( background.isCubeTexture && background.isRenderTargetTexture === false ) ? - 1 : 1;
+			boxMesh.material.uniforms.backgroundBlurriness.value = scene.backgroundBlurriness;
+			boxMesh.material.uniforms.backgroundIntensity.value = scene.backgroundIntensity;
+			boxMesh.material.uniforms.backgroundRotation.value.setFromMatrix4( _m1$1.makeRotationFromEuler( _e1$1 ) );
+			boxMesh.material.toneMapped = ColorManagement.getTransfer( background.colorSpace ) !== SRGBTransfer;
+
+			if ( currentBackground !== background ||
+				currentBackgroundVersion !== background.version ||
+				currentTonemapping !== renderer.toneMapping ) {
+
+				boxMesh.material.needsUpdate = true;
+
+				currentBackground = background;
+				currentBackgroundVersion = background.version;
+				currentTonemapping = renderer.toneMapping;
+
+			}
+
+			boxMesh.layers.enableAll();
+
+			// push to the pre-sorted opaque render list
+			renderList.unshift( boxMesh, boxMesh.geometry, boxMesh.material, 0, 0, null );
+
+		} else if ( background && background.isTexture ) {
+
+			if ( planeMesh === undefined ) {
+
+				planeMesh = new Mesh(
+					new PlaneGeometry( 2, 2 ),
+					new ShaderMaterial( {
+						name: 'BackgroundMaterial',
+						uniforms: cloneUniforms( ShaderLib.background.uniforms ),
+						vertexShader: ShaderLib.background.vertexShader,
+						fragmentShader: ShaderLib.background.fragmentShader,
+						side: FrontSide,
+						depthTest: false,
+						depthWrite: false,
+						fog: false
+					} )
+				);
+
+				planeMesh.geometry.deleteAttribute( 'normal' );
+
+				// add "map" material property so the renderer can evaluate it like for built-in materials
+				Object.defineProperty( planeMesh.material, 'map', {
+
+					get: function () {
+
+						return this.uniforms.t2D.value;
+
+					}
+
+				} );
+
+				objects.update( planeMesh );
+
+			}
+
+			planeMesh.material.uniforms.t2D.value = background;
+			planeMesh.material.uniforms.backgroundIntensity.value = scene.backgroundIntensity;
+			planeMesh.material.toneMapped = ColorManagement.getTransfer( background.colorSpace ) !== SRGBTransfer;
+
+			if ( background.matrixAutoUpdate === true ) {
+
+				background.updateMatrix();
+
+			}
+
+			planeMesh.material.uniforms.uvTransform.value.copy( background.matrix );
+
+			if ( currentBackground !== background ||
+				currentBackgroundVersion !== background.version ||
+				currentTonemapping !== renderer.toneMapping ) {
+
+				planeMesh.material.needsUpdate = true;
+
+				currentBackground = background;
+				currentBackgroundVersion = background.version;
+				currentTonemapping = renderer.toneMapping;
+
+			}
+
+			planeMesh.layers.enableAll();
+
+			// push to the pre-sorted opaque render list
+			renderList.unshift( planeMesh, planeMesh.geometry, planeMesh.material, 0, 0, null );
+
+		}
+
+	}
+
+	function setClear( color, alpha ) {
+
+		color.getRGB( _rgb, getUnlitUniformColorSpace( renderer ) );
+
+		state.buffers.color.setClear( _rgb.r, _rgb.g, _rgb.b, alpha, premultipliedAlpha );
+
+	}
+
+	return {
+
+		getClearColor: function () {
+
+			return clearColor;
+
+		},
+		setClearColor: function ( color, alpha = 1 ) {
+
+			clearColor.set( color );
+			clearAlpha = alpha;
+			setClear( clearColor, clearAlpha );
+
+		},
+		getClearAlpha: function () {
+
+			return clearAlpha;
+
+		},
+		setClearAlpha: function ( alpha ) {
+
+			clearAlpha = alpha;
+			setClear( clearColor, clearAlpha );
+
+		},
+		render: render,
+		addToRenderList: addToRenderList
+
+	};
+
+}
+
+function WebGLBindingStates( gl, attributes ) {
+
+	const maxVertexAttributes = gl.getParameter( gl.MAX_VERTEX_ATTRIBS );
+
+	const bindingStates = {};
+
+	const defaultState = createBindingState( null );
+	let currentState = defaultState;
+	let forceUpdate = false;
+
+	function setup( object, material, program, geometry, index ) {
+
+		let updateBuffers = false;
+
+		const state = getBindingState( geometry, program, material );
+
+		if ( currentState !== state ) {
+
+			currentState = state;
+			bindVertexArrayObject( currentState.object );
+
+		}
+
+		updateBuffers = needsUpdate( object, geometry, program, index );
+
+		if ( updateBuffers ) saveCache( object, geometry, program, index );
+
+		if ( index !== null ) {
+
+			attributes.update( index, gl.ELEMENT_ARRAY_BUFFER );
+
+		}
+
+		if ( updateBuffers || forceUpdate ) {
+
+			forceUpdate = false;
+
+			setupVertexAttributes( object, material, program, geometry );
+
+			if ( index !== null ) {
+
+				gl.bindBuffer( gl.ELEMENT_ARRAY_BUFFER, attributes.get( index ).buffer );
+
+			}
+
+		}
+
+	}
+
+	function createVertexArrayObject() {
+
+		return gl.createVertexArray();
+
+	}
+
+	function bindVertexArrayObject( vao ) {
+
+		return gl.bindVertexArray( vao );
+
+	}
+
+	function deleteVertexArrayObject( vao ) {
+
+		return gl.deleteVertexArray( vao );
+
+	}
+
+	function getBindingState( geometry, program, material ) {
+
+		const wireframe = ( material.wireframe === true );
+
+		let programMap = bindingStates[ geometry.id ];
+
+		if ( programMap === undefined ) {
+
+			programMap = {};
+			bindingStates[ geometry.id ] = programMap;
+
+		}
+
+		let stateMap = programMap[ program.id ];
+
+		if ( stateMap === undefined ) {
+
+			stateMap = {};
+			programMap[ program.id ] = stateMap;
+
+		}
+
+		let state = stateMap[ wireframe ];
+
+		if ( state === undefined ) {
+
+			state = createBindingState( createVertexArrayObject() );
+			stateMap[ wireframe ] = state;
+
+		}
+
+		return state;
+
+	}
+
+	function createBindingState( vao ) {
+
+		const newAttributes = [];
+		const enabledAttributes = [];
+		const attributeDivisors = [];
+
+		for ( let i = 0; i < maxVertexAttributes; i ++ ) {
+
+			newAttributes[ i ] = 0;
+			enabledAttributes[ i ] = 0;
+			attributeDivisors[ i ] = 0;
+
+		}
+
+		return {
+
+			// for backward compatibility on non-VAO support browser
+			geometry: null,
+			program: null,
+			wireframe: false,
+
+			newAttributes: newAttributes,
+			enabledAttributes: enabledAttributes,
+			attributeDivisors: attributeDivisors,
+			object: vao,
+			attributes: {},
+			index: null
+
+		};
+
+	}
+
+	function needsUpdate( object, geometry, program, index ) {
+
+		const cachedAttributes = currentState.attributes;
+		const geometryAttributes = geometry.attributes;
+
+		let attributesNum = 0;
+
+		const programAttributes = program.getAttributes();
+
+		for ( const name in programAttributes ) {
+
+			const programAttribute = programAttributes[ name ];
+
+			if ( programAttribute.location >= 0 ) {
+
+				const cachedAttribute = cachedAttributes[ name ];
+				let geometryAttribute = geometryAttributes[ name ];
+
+				if ( geometryAttribute === undefined ) {
+
+					if ( name === 'instanceMatrix' && object.instanceMatrix ) geometryAttribute = object.instanceMatrix;
+					if ( name === 'instanceColor' && object.instanceColor ) geometryAttribute = object.instanceColor;
+
+				}
+
+				if ( cachedAttribute === undefined ) return true;
+
+				if ( cachedAttribute.attribute !== geometryAttribute ) return true;
+
+				if ( geometryAttribute && cachedAttribute.data !== geometryAttribute.data ) return true;
+
+				attributesNum ++;
+
+			}
+
+		}
+
+		if ( currentState.attributesNum !== attributesNum ) return true;
+
+		if ( currentState.index !== index ) return true;
+
+		return false;
+
+	}
+
+	function saveCache( object, geometry, program, index ) {
+
+		const cache = {};
+		const attributes = geometry.attributes;
+		let attributesNum = 0;
+
+		const programAttributes = program.getAttributes();
+
+		for ( const name in programAttributes ) {
+
+			const programAttribute = programAttributes[ name ];
+
+			if ( programAttribute.location >= 0 ) {
+
+				let attribute = attributes[ name ];
+
+				if ( attribute === undefined ) {
+
+					if ( name === 'instanceMatrix' && object.instanceMatrix ) attribute = object.instanceMatrix;
+					if ( name === 'instanceColor' && object.instanceColor ) attribute = object.instanceColor;
+
+				}
+
+				const data = {};
+				data.attribute = attribute;
+
+				if ( attribute && attribute.data ) {
+
+					data.data = attribute.data;
+
+				}
+
+				cache[ name ] = data;
+
+				attributesNum ++;
+
+			}
+
+		}
+
+		currentState.attributes = cache;
+		currentState.attributesNum = attributesNum;
+
+		currentState.index = index;
+
+	}
+
+	function initAttributes() {
+
+		const newAttributes = currentState.newAttributes;
+
+		for ( let i = 0, il = newAttributes.length; i < il; i ++ ) {
+
+			newAttributes[ i ] = 0;
+
+		}
+
+	}
+
+	function enableAttribute( attribute ) {
+
+		enableAttributeAndDivisor( attribute, 0 );
+
+	}
+
+	function enableAttributeAndDivisor( attribute, meshPerAttribute ) {
+
+		const newAttributes = currentState.newAttributes;
+		const enabledAttributes = currentState.enabledAttributes;
+		const attributeDivisors = currentState.attributeDivisors;
+
+		newAttributes[ attribute ] = 1;
+
+		if ( enabledAttributes[ attribute ] === 0 ) {
+
+			gl.enableVertexAttribArray( attribute );
+			enabledAttributes[ attribute ] = 1;
+
+		}
+
+		if ( attributeDivisors[ attribute ] !== meshPerAttribute ) {
+
+			gl.vertexAttribDivisor( attribute, meshPerAttribute );
+			attributeDivisors[ attribute ] = meshPerAttribute;
+
+		}
+
+	}
+
+	function disableUnusedAttributes() {
+
+		const newAttributes = currentState.newAttributes;
+		const enabledAttributes = currentState.enabledAttributes;
+
+		for ( let i = 0, il = enabledAttributes.length; i < il; i ++ ) {
+
+			if ( enabledAttributes[ i ] !== newAttributes[ i ] ) {
+
+				gl.disableVertexAttribArray( i );
+				enabledAttributes[ i ] = 0;
+
+			}
+
+		}
+
+	}
+
+	function vertexAttribPointer( index, size, type, normalized, stride, offset, integer ) {
+
+		if ( integer === true ) {
+
+			gl.vertexAttribIPointer( index, size, type, stride, offset );
+
+		} else {
+
+			gl.vertexAttribPointer( index, size, type, normalized, stride, offset );
+
+		}
+
+	}
+
+	function setupVertexAttributes( object, material, program, geometry ) {
+
+		initAttributes();
+
+		const geometryAttributes = geometry.attributes;
+
+		const programAttributes = program.getAttributes();
+
+		const materialDefaultAttributeValues = material.defaultAttributeValues;
+
+		for ( const name in programAttributes ) {
+
+			const programAttribute = programAttributes[ name ];
+
+			if ( programAttribute.location >= 0 ) {
+
+				let geometryAttribute = geometryAttributes[ name ];
+
+				if ( geometryAttribute === undefined ) {
+
+					if ( name === 'instanceMatrix' && object.instanceMatrix ) geometryAttribute = object.instanceMatrix;
+					if ( name === 'instanceColor' && object.instanceColor ) geometryAttribute = object.instanceColor;
+
+				}
+
+				if ( geometryAttribute !== undefined ) {
+
+					const normalized = geometryAttribute.normalized;
+					const size = geometryAttribute.itemSize;
+
+					const attribute = attributes.get( geometryAttribute );
+
+					// TODO Attribute may not be available on context restore
+
+					if ( attribute === undefined ) continue;
+
+					const buffer = attribute.buffer;
+					const type = attribute.type;
+					const bytesPerElement = attribute.bytesPerElement;
+
+					// check for integer attributes
+
+					const integer = ( type === gl.INT || type === gl.UNSIGNED_INT || geometryAttribute.gpuType === IntType );
+
+					if ( geometryAttribute.isInterleavedBufferAttribute ) {
+
+						const data = geometryAttribute.data;
+						const stride = data.stride;
+						const offset = geometryAttribute.offset;
+
+						if ( data.isInstancedInterleavedBuffer ) {
+
+							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {
+
+								enableAttributeAndDivisor( programAttribute.location + i, data.meshPerAttribute );
+
+							}
+
+							if ( object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined ) {
+
+								geometry._maxInstanceCount = data.meshPerAttribute * data.count;
+
+							}
+
+						} else {
+
+							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {
+
+								enableAttribute( programAttribute.location + i );
+
+							}
+
+						}
+
+						gl.bindBuffer( gl.ARRAY_BUFFER, buffer );
+
+						for ( let i = 0; i < programAttribute.locationSize; i ++ ) {
+
+							vertexAttribPointer(
+								programAttribute.location + i,
+								size / programAttribute.locationSize,
+								type,
+								normalized,
+								stride * bytesPerElement,
+								( offset + ( size / programAttribute.locationSize ) * i ) * bytesPerElement,
+								integer
+							);
+
+						}
+
+					} else {
+
+						if ( geometryAttribute.isInstancedBufferAttribute ) {
+
+							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {
+
+								enableAttributeAndDivisor( programAttribute.location + i, geometryAttribute.meshPerAttribute );
+
+							}
+
+							if ( object.isInstancedMesh !== true && geometry._maxInstanceCount === undefined ) {
+
+								geometry._maxInstanceCount = geometryAttribute.meshPerAttribute * geometryAttribute.count;
+
+							}
+
+						} else {
+
+							for ( let i = 0; i < programAttribute.locationSize; i ++ ) {
+
+								enableAttribute( programAttribute.location + i );
+
+							}
+
+						}
+
+						gl.bindBuffer( gl.ARRAY_BUFFER, buffer );
+
+						for ( let i = 0; i < programAttribute.locationSize; i ++ ) {
+
+							vertexAttribPointer(
+								programAttribute.location + i,
+								size / programAttribute.locationSize,
+								type,
+								normalized,
+								size * bytesPerElement,
+								( size / programAttribute.locationSize ) * i * bytesPerElement,
+								integer
+							);
+
+						}
+
+					}
+
+				} else if ( materialDefaultAttributeValues !== undefined ) {
+
+					const value = materialDefaultAttributeValues[ name ];
+
+					if ( value !== undefined ) {
+
+						switch ( value.length ) {
+
+							case 2:
+								gl.vertexAttrib2fv( programAttribute.location, value );
+								break;
+
+							case 3:
+								gl.vertexAttrib3fv( programAttribute.location, value );
+								break;
+
+							case 4:
+								gl.vertexAttrib4fv( programAttribute.location, value );
+								break;
+
+							default:
+								gl.vertexAttrib1fv( programAttribute.location, value );
+
+						}
+
+					}
+
+				}
+
+			}
+
+		}
+
+		disableUnusedAttributes();
+
+	}
+
+	function dispose() {
+
+		reset();
+
+		for ( const geometryId in bindingStates ) {
+
+			const programMap = bindingStates[ geometryId ];
+
+			for ( const programId in programMap ) {
+
+				const stateMap = programMap[ programId ];
+
+				for ( const wireframe in stateMap ) {
+
+					deleteVertexArrayObject( stateMap[ wireframe ].object );
+
+					delete stateMap[ wireframe ];
+
+				}
+
+				delete programMap[ programId ];
+
+			}
+
+			delete bindingStates[ geometryId ];
+
+		}
+
+	}
+
+	function releaseStatesOfGeometry( geometry ) {
+
+		if ( bindingStates[ geometry.id ] === undefined ) return;
+
+		const programMap = bindingStates[ geometry.id ];
+
+		for ( const programId in programMap ) {
+
+			const stateMap = programMap[ programId ];
+
+			for ( const wireframe in stateMap ) {
+
+				deleteVertexArrayObject( stateMap[ wireframe ].object );
+
+				delete stateMap[ wireframe ];
+
+			}
+
+			delete programMap[ programId ];
+
+		}
+
+		delete bindingStates[ geometry.id ];
+
+	}
+
+	function releaseStatesOfProgram( program ) {
+
+		for ( const geometryId in bindingStates ) {
+
+			const programMap = bindingStates[ geometryId ];
+
+			if ( programMap[ program.id ] === undefined ) continue;
+
+			const stateMap = programMap[ program.id ];
+
+			for ( const wireframe in stateMap ) {
+
+				deleteVertexArrayObject( stateMap[ wireframe ].object );
+
+				delete stateMap[ wireframe ];
+
+			}
+
+			delete programMap[ program.id ];
+
+		}
+
+	}
+
+	function reset() {
+
+		resetDefaultState();
+		forceUpdate = true;
+
+		if ( currentState === defaultState ) return;
+
+		currentState = defaultState;
+		bindVertexArrayObject( currentState.object );
+
+	}
+
+	// for backward-compatibility
+
+	function resetDefaultState() {
+
+		defaultState.geometry = null;
+		defaultState.program = null;
+		defaultState.wireframe = false;
+
+	}
+
+	return {
+
+		setup: setup,
+		reset: reset,
+		resetDefaultState: resetDefaultState,
+		dispose: dispose,
+		releaseStatesOfGeometry: releaseStatesOfGeometry,
+		releaseStatesOfProgram: releaseStatesOfProgram,
+
+		initAttributes: initAttributes,
+		enableAttribute: enableAttribute,
+		disableUnusedAttributes: disableUnusedAttributes
+
+	};
+
+}
+
+function WebGLBufferRenderer( gl, extensions, info ) {
+
+	let mode;
+
+	function setMode( value ) {
+
+		mode = value;
+
+	}
+
+	function render( start, count ) {
+
+		gl.drawArrays( mode, start, count );
+
+		info.update( count, mode, 1 );
+
+	}
+
+	function renderInstances( start, count, primcount ) {
+
+		if ( primcount === 0 ) return;
+
+		gl.drawArraysInstanced( mode, start, count, primcount );
+
+		info.update( count, mode, primcount );
+
+	}
+
+	function renderMultiDraw( starts, counts, drawCount ) {
+
+		if ( drawCount === 0 ) return;
+
+		const extension = extensions.get( 'WEBGL_multi_draw' );
+		extension.multiDrawArraysWEBGL( mode, starts, 0, counts, 0, drawCount );
+
+		let elementCount = 0;
+		for ( let i = 0; i < drawCount; i ++ ) {
+
+			elementCount += counts[ i ];
+
+		}
+
+		info.update( elementCount, mode, 1 );
+
+	}
+
+	function renderMultiDrawInstances( starts, counts, drawCount, primcount ) {
+
+		if ( drawCount === 0 ) return;
+
+		const extension = extensions.get( 'WEBGL_multi_draw' );
+
+		if ( extension === null ) {
+
+			for ( let i = 0; i < starts.length; i ++ ) {
+
+				renderInstances( starts[ i ], counts[ i ], primcount[ i ] );
+
+			}
+
+		} else {
+
+			extension.multiDrawArraysInstancedWEBGL( mode, starts, 0, counts, 0, primcount, 0, drawCount );
+
+			let elementCount = 0;
+			for ( let i = 0; i < drawCount; i ++ ) {
+
+				elementCount += counts[ i ];
+
+			}
+
+			for ( let i = 0; i < primcount.length; i ++ ) {
+
+				info.update( elementCount, mode, primcount[ i ] );
+
+			}
+
+		}
+
+	}
+
+	//
+
+	this.setMode = setMode;
+	this.render = render;
+	this.renderInstances = renderInstances;
+	this.renderMultiDraw = renderMultiDraw;
+	this.renderMultiDrawInstances = renderMultiDrawInstances;
+
+}
+
+function WebGLCapabilities( gl, extensions, parameters, utils ) {
+
+	let maxAnisotropy;
+
+	function getMaxAnisotropy() {
+
+		if ( maxAnisotropy !== undefined ) return maxAnisotropy;
+
+		if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {
+
+			const extension = extensions.get( 'EXT_texture_filter_anisotropic' );
+
+			maxAnisotropy = gl.getParameter( extension.MAX_TEXTURE_MAX_ANISOTROPY_EXT );
+
+		} else {
+
+			maxAnisotropy = 0;
+
+		}
+
+		return maxAnisotropy;
+
+	}
+
+	function textureFormatReadable( textureFormat ) {
+
+		if ( textureFormat !== RGBAFormat && utils.convert( textureFormat ) !== gl.getParameter( gl.IMPLEMENTATION_COLOR_READ_FORMAT ) ) {
+
+			return false;
+
+		}
+
+		return true;
+
+	}
+
+	function textureTypeReadable( textureType ) {
+
+		const halfFloatSupportedByExt = ( textureType === HalfFloatType ) && ( extensions.has( 'EXT_color_buffer_half_float' ) || extensions.has( 'EXT_color_buffer_float' ) );
+
+		if ( textureType !== UnsignedByteType && utils.convert( textureType ) !== gl.getParameter( gl.IMPLEMENTATION_COLOR_READ_TYPE ) && // Edge and Chrome Mac < 52 (#9513)
+			textureType !== FloatType && ! halfFloatSupportedByExt ) {
+
+			return false;
+
+		}
+
+		return true;
+
+	}
+
+	function getMaxPrecision( precision ) {
+
+		if ( precision === 'highp' ) {
+
+			if ( gl.getShaderPrecisionFormat( gl.VERTEX_SHADER, gl.HIGH_FLOAT ).precision > 0 &&
+				gl.getShaderPrecisionFormat( gl.FRAGMENT_SHADER, gl.HIGH_FLOAT ).precision > 0 ) {
+
+				return 'highp';
+
+			}
+
+			precision = 'mediump';
+
+		}
+
+		if ( precision === 'mediump' ) {
+
+			if ( gl.getShaderPrecisionFormat( gl.VERTEX_SHADER, gl.MEDIUM_FLOAT ).precision > 0 &&
+				gl.getShaderPrecisionFormat( gl.FRAGMENT_SHADER, gl.MEDIUM_FLOAT ).precision > 0 ) {
+
+				return 'mediump';
+
+			}
+
+		}
+
+		return 'lowp';
+
+	}
+
+	let precision = parameters.precision !== undefined ? parameters.precision : 'highp';
+	const maxPrecision = getMaxPrecision( precision );
+
+	if ( maxPrecision !== precision ) {
+
+		console.warn( 'THREE.WebGLRenderer:', precision, 'not supported, using', maxPrecision, 'instead.' );
+		precision = maxPrecision;
+
+	}
+
+	const logarithmicDepthBuffer = parameters.logarithmicDepthBuffer === true;
+
+	const maxTextures = gl.getParameter( gl.MAX_TEXTURE_IMAGE_UNITS );
+	const maxVertexTextures = gl.getParameter( gl.MAX_VERTEX_TEXTURE_IMAGE_UNITS );
+	const maxTextureSize = gl.getParameter( gl.MAX_TEXTURE_SIZE );
+	const maxCubemapSize = gl.getParameter( gl.MAX_CUBE_MAP_TEXTURE_SIZE );
+
+	const maxAttributes = gl.getParameter( gl.MAX_VERTEX_ATTRIBS );
+	const maxVertexUniforms = gl.getParameter( gl.MAX_VERTEX_UNIFORM_VECTORS );
+	const maxVaryings = gl.getParameter( gl.MAX_VARYING_VECTORS );
+	const maxFragmentUniforms = gl.getParameter( gl.MAX_FRAGMENT_UNIFORM_VECTORS );
+
+	const vertexTextures = maxVertexTextures > 0;
+
+	const maxSamples = gl.getParameter( gl.MAX_SAMPLES );
+
+	return {
+
+		isWebGL2: true, // keeping this for backwards compatibility
+
+		getMaxAnisotropy: getMaxAnisotropy,
+		getMaxPrecision: getMaxPrecision,
+
+		textureFormatReadable: textureFormatReadable,
+		textureTypeReadable: textureTypeReadable,
+
+		precision: precision,
+		logarithmicDepthBuffer: logarithmicDepthBuffer,
+
+		maxTextures: maxTextures,
+		maxVertexTextures: maxVertexTextures,
+		maxTextureSize: maxTextureSize,
+		maxCubemapSize: maxCubemapSize,
+
+		maxAttributes: maxAttributes,
+		maxVertexUniforms: maxVertexUniforms,
+		maxVaryings: maxVaryings,
+		maxFragmentUniforms: maxFragmentUniforms,
+
+		vertexTextures: vertexTextures,
+
+		maxSamples: maxSamples
+
+	};
+
+}
+
+function WebGLClipping( properties ) {
+
+	const scope = this;
+
+	let globalState = null,
+		numGlobalPlanes = 0,
+		localClippingEnabled = false,
+		renderingShadows = false;
+
+	const plane = new Plane(),
+		viewNormalMatrix = new Matrix3(),
+
+		uniform = { value: null, needsUpdate: false };
+
+	this.uniform = uniform;
+	this.numPlanes = 0;
+	this.numIntersection = 0;
+
+	this.init = function ( planes, enableLocalClipping ) {
+
+		const enabled =
+			planes.length !== 0 ||
+			enableLocalClipping ||
+			// enable state of previous frame - the clipping code has to
+			// run another frame in order to reset the state:
+			numGlobalPlanes !== 0 ||
+			localClippingEnabled;
+
+		localClippingEnabled = enableLocalClipping;
+
+		numGlobalPlanes = planes.length;
+
+		return enabled;
+
+	};
+
+	this.beginShadows = function () {
+
+		renderingShadows = true;
+		projectPlanes( null );
+
+	};
+
+	this.endShadows = function () {
+
+		renderingShadows = false;
+
+	};
+
+	this.setGlobalState = function ( planes, camera ) {
+
+		globalState = projectPlanes( planes, camera, 0 );
+
+	};
+
+	this.setState = function ( material, camera, useCache ) {
+
+		const planes = material.clippingPlanes,
+			clipIntersection = material.clipIntersection,
+			clipShadows = material.clipShadows;
+
+		const materialProperties = properties.get( material );
+
+		if ( ! localClippingEnabled || planes === null || planes.length === 0 || renderingShadows && ! clipShadows ) {
+
+			// there's no local clipping
+
+			if ( renderingShadows ) {
+
+				// there's no global clipping
+
+				projectPlanes( null );
+
+			} else {
+
+				resetGlobalState();
+
+			}
+
+		} else {
+
+			const nGlobal = renderingShadows ? 0 : numGlobalPlanes,
+				lGlobal = nGlobal * 4;
+
+			let dstArray = materialProperties.clippingState || null;
+
+			uniform.value = dstArray; // ensure unique state
+
+			dstArray = projectPlanes( planes, camera, lGlobal, useCache );
+
+			for ( let i = 0; i !== lGlobal; ++ i ) {
+
+				dstArray[ i ] = globalState[ i ];
+
+			}
+
+			materialProperties.clippingState = dstArray;
+			this.numIntersection = clipIntersection ? this.numPlanes : 0;
+			this.numPlanes += nGlobal;
+
+		}
+
+
+	};
+
+	function resetGlobalState() {
+
+		if ( uniform.value !== globalState ) {
+
+			uniform.value = globalState;
+			uniform.needsUpdate = numGlobalPlanes > 0;
+
+		}
+
+		scope.numPlanes = numGlobalPlanes;
+		scope.numIntersection = 0;
+
+	}
+
+	function projectPlanes( planes, camera, dstOffset, skipTransform ) {
+
+		const nPlanes = planes !== null ? planes.length : 0;
+		let dstArray = null;
+
+		if ( nPlanes !== 0 ) {
+
+			dstArray = uniform.value;
+
+			if ( skipTransform !== true || dstArray === null ) {
+
+				const flatSize = dstOffset + nPlanes * 4,
+					viewMatrix = camera.matrixWorldInverse;
+
+				viewNormalMatrix.getNormalMatrix( viewMatrix );
+
+				if ( dstArray === null || dstArray.length < flatSize ) {
+
+					dstArray = new Float32Array( flatSize );
+
+				}
+
+				for ( let i = 0, i4 = dstOffset; i !== nPlanes; ++ i, i4 += 4 ) {
+
+					plane.copy( planes[ i ] ).applyMatrix4( viewMatrix, viewNormalMatrix );
+
+					plane.normal.toArray( dstArray, i4 );
+					dstArray[ i4 + 3 ] = plane.constant;
+
+				}
+
+			}
+
+			uniform.value = dstArray;
+			uniform.needsUpdate = true;
+
+		}
+
+		scope.numPlanes = nPlanes;
+		scope.numIntersection = 0;
+
+		return dstArray;
+
+	}
+
+}
+
+function WebGLCubeMaps( renderer ) {
+
+	let cubemaps = new WeakMap();
+
+	function mapTextureMapping( texture, mapping ) {
+
+		if ( mapping === EquirectangularReflectionMapping ) {
+
+			texture.mapping = CubeReflectionMapping;
+
+		} else if ( mapping === EquirectangularRefractionMapping ) {
+
+			texture.mapping = CubeRefractionMapping;
+
+		}
+
+		return texture;
+
+	}
+
+	function get( texture ) {
+
+		if ( texture && texture.isTexture ) {
+
+			const mapping = texture.mapping;
+
+			if ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping ) {
+
+				if ( cubemaps.has( texture ) ) {
+
+					const cubemap = cubemaps.get( texture ).texture;
+					return mapTextureMapping( cubemap, texture.mapping );
+
+				} else {
+
+					const image = texture.image;
+
+					if ( image && image.height > 0 ) {
+
+						const renderTarget = new WebGLCubeRenderTarget( image.height );
+						renderTarget.fromEquirectangularTexture( renderer, texture );
+						cubemaps.set( texture, renderTarget );
+
+						texture.addEventListener( 'dispose', onTextureDispose );
+
+						return mapTextureMapping( renderTarget.texture, texture.mapping );
+
+					} else {
+
+						// image not yet ready. try the conversion next frame
+
+						return null;
+
+					}
+
+				}
+
+			}
+
+		}
+
+		return texture;
+
+	}
+
+	function onTextureDispose( event ) {
+
+		const texture = event.target;
+
+		texture.removeEventListener( 'dispose', onTextureDispose );
+
+		const cubemap = cubemaps.get( texture );
+
+		if ( cubemap !== undefined ) {
+
+			cubemaps.delete( texture );
+			cubemap.dispose();
+
+		}
+
+	}
+
+	function dispose() {
+
+		cubemaps = new WeakMap();
+
+	}
+
+	return {
+		get: get,
+		dispose: dispose
+	};
+
+}
+
+class OrthographicCamera extends Camera {
+
+	constructor( left = - 1, right = 1, top = 1, bottom = - 1, near = 0.1, far = 2000 ) {
+
+		super();
+
+		this.isOrthographicCamera = true;
+
+		this.type = 'OrthographicCamera';
+
+		this.zoom = 1;
+		this.view = null;
+
+		this.left = left;
+		this.right = right;
+		this.top = top;
+		this.bottom = bottom;
+
+		this.near = near;
+		this.far = far;
+
+		this.updateProjectionMatrix();
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.left = source.left;
+		this.right = source.right;
+		this.top = source.top;
+		this.bottom = source.bottom;
+		this.near = source.near;
+		this.far = source.far;
+
+		this.zoom = source.zoom;
+		this.view = source.view === null ? null : Object.assign( {}, source.view );
+
+		return this;
+
+	}
+
+	setViewOffset( fullWidth, fullHeight, x, y, width, height ) {
+
+		if ( this.view === null ) {
+
+			this.view = {
+				enabled: true,
+				fullWidth: 1,
+				fullHeight: 1,
+				offsetX: 0,
+				offsetY: 0,
+				width: 1,
+				height: 1
+			};
+
+		}
+
+		this.view.enabled = true;
+		this.view.fullWidth = fullWidth;
+		this.view.fullHeight = fullHeight;
+		this.view.offsetX = x;
+		this.view.offsetY = y;
+		this.view.width = width;
+		this.view.height = height;
+
+		this.updateProjectionMatrix();
+
+	}
+
+	clearViewOffset() {
+
+		if ( this.view !== null ) {
+
+			this.view.enabled = false;
+
+		}
+
+		this.updateProjectionMatrix();
+
+	}
+
+	updateProjectionMatrix() {
+
+		const dx = ( this.right - this.left ) / ( 2 * this.zoom );
+		const dy = ( this.top - this.bottom ) / ( 2 * this.zoom );
+		const cx = ( this.right + this.left ) / 2;
+		const cy = ( this.top + this.bottom ) / 2;
+
+		let left = cx - dx;
+		let right = cx + dx;
+		let top = cy + dy;
+		let bottom = cy - dy;
+
+		if ( this.view !== null && this.view.enabled ) {
+
+			const scaleW = ( this.right - this.left ) / this.view.fullWidth / this.zoom;
+			const scaleH = ( this.top - this.bottom ) / this.view.fullHeight / this.zoom;
+
+			left += scaleW * this.view.offsetX;
+			right = left + scaleW * this.view.width;
+			top -= scaleH * this.view.offsetY;
+			bottom = top - scaleH * this.view.height;
+
+		}
+
+		this.projectionMatrix.makeOrthographic( left, right, top, bottom, this.near, this.far, this.coordinateSystem );
+
+		this.projectionMatrixInverse.copy( this.projectionMatrix ).invert();
+
+	}
+
+	toJSON( meta ) {
+
+		const data = super.toJSON( meta );
+
+		data.object.zoom = this.zoom;
+		data.object.left = this.left;
+		data.object.right = this.right;
+		data.object.top = this.top;
+		data.object.bottom = this.bottom;
+		data.object.near = this.near;
+		data.object.far = this.far;
+
+		if ( this.view !== null ) data.object.view = Object.assign( {}, this.view );
+
+		return data;
+
+	}
+
+}
+
+const LOD_MIN = 4;
+
+// The standard deviations (radians) associated with the extra mips. These are
+// chosen to approximate a Trowbridge-Reitz distribution function times the
+// geometric shadowing function. These sigma values squared must match the
+// variance #defines in cube_uv_reflection_fragment.glsl.js.
+const EXTRA_LOD_SIGMA = [ 0.125, 0.215, 0.35, 0.446, 0.526, 0.582 ];
+
+// The maximum length of the blur for loop. Smaller sigmas will use fewer
+// samples and exit early, but not recompile the shader.
+const MAX_SAMPLES = 20;
+
+const _flatCamera = /*@__PURE__*/ new OrthographicCamera();
+const _clearColor = /*@__PURE__*/ new Color();
+let _oldTarget = null;
+let _oldActiveCubeFace = 0;
+let _oldActiveMipmapLevel = 0;
+let _oldXrEnabled = false;
+
+// Golden Ratio
+const PHI = ( 1 + Math.sqrt( 5 ) ) / 2;
+const INV_PHI = 1 / PHI;
+
+// Vertices of a dodecahedron (except the opposites, which represent the
+// same axis), used as axis directions evenly spread on a sphere.
+const _axisDirections = [
+	/*@__PURE__*/ new Vector3( - PHI, INV_PHI, 0 ),
+	/*@__PURE__*/ new Vector3( PHI, INV_PHI, 0 ),
+	/*@__PURE__*/ new Vector3( - INV_PHI, 0, PHI ),
+	/*@__PURE__*/ new Vector3( INV_PHI, 0, PHI ),
+	/*@__PURE__*/ new Vector3( 0, PHI, - INV_PHI ),
+	/*@__PURE__*/ new Vector3( 0, PHI, INV_PHI ),
+	/*@__PURE__*/ new Vector3( - 1, 1, - 1 ),
+	/*@__PURE__*/ new Vector3( 1, 1, - 1 ),
+	/*@__PURE__*/ new Vector3( - 1, 1, 1 ),
+	/*@__PURE__*/ new Vector3( 1, 1, 1 ) ];
+
+/**
+ * This class generates a Prefiltered, Mipmapped Radiance Environment Map
+ * (PMREM) from a cubeMap environment texture. This allows different levels of
+ * blur to be quickly accessed based on material roughness. It is packed into a
+ * special CubeUV format that allows us to perform custom interpolation so that
+ * we can support nonlinear formats such as RGBE. Unlike a traditional mipmap
+ * chain, it only goes down to the LOD_MIN level (above), and then creates extra
+ * even more filtered 'mips' at the same LOD_MIN resolution, associated with
+ * higher roughness levels. In this way we maintain resolution to smoothly
+ * interpolate diffuse lighting while limiting sampling computation.
+ *
+ * Paper: Fast, Accurate Image-Based Lighting
+ * https://drive.google.com/file/d/15y8r_UpKlU9SvV4ILb0C3qCPecS8pvLz/view
+*/
+
+class PMREMGenerator {
+
+	constructor( renderer ) {
+
+		this._renderer = renderer;
+		this._pingPongRenderTarget = null;
+
+		this._lodMax = 0;
+		this._cubeSize = 0;
+		this._lodPlanes = [];
+		this._sizeLods = [];
+		this._sigmas = [];
+
+		this._blurMaterial = null;
+		this._cubemapMaterial = null;
+		this._equirectMaterial = null;
+
+		this._compileMaterial( this._blurMaterial );
+
+	}
+
+	/**
+	 * Generates a PMREM from a supplied Scene, which can be faster than using an
+	 * image if networking bandwidth is low. Optional sigma specifies a blur radius
+	 * in radians to be applied to the scene before PMREM generation. Optional near
+	 * and far planes ensure the scene is rendered in its entirety (the cubeCamera
+	 * is placed at the origin).
+	 */
+	fromScene( scene, sigma = 0, near = 0.1, far = 100 ) {
+
+		_oldTarget = this._renderer.getRenderTarget();
+		_oldActiveCubeFace = this._renderer.getActiveCubeFace();
+		_oldActiveMipmapLevel = this._renderer.getActiveMipmapLevel();
+		_oldXrEnabled = this._renderer.xr.enabled;
+
+		this._renderer.xr.enabled = false;
+
+		this._setSize( 256 );
+
+		const cubeUVRenderTarget = this._allocateTargets();
+		cubeUVRenderTarget.depthBuffer = true;
+
+		this._sceneToCubeUV( scene, near, far, cubeUVRenderTarget );
+
+		if ( sigma > 0 ) {
+
+			this._blur( cubeUVRenderTarget, 0, 0, sigma );
+
+		}
+
+		this._applyPMREM( cubeUVRenderTarget );
+		this._cleanup( cubeUVRenderTarget );
+
+		return cubeUVRenderTarget;
+
+	}
+
+	/**
+	 * Generates a PMREM from an equirectangular texture, which can be either LDR
+	 * or HDR. The ideal input image size is 1k (1024 x 512),
+	 * as this matches best with the 256 x 256 cubemap output.
+	 * The smallest supported equirectangular image size is 64 x 32.
+	 */
+	fromEquirectangular( equirectangular, renderTarget = null ) {
+
+		return this._fromTexture( equirectangular, renderTarget );
+
+	}
+
+	/**
+	 * Generates a PMREM from an cubemap texture, which can be either LDR
+	 * or HDR. The ideal input cube size is 256 x 256,
+	 * as this matches best with the 256 x 256 cubemap output.
+	 * The smallest supported cube size is 16 x 16.
+	 */
+	fromCubemap( cubemap, renderTarget = null ) {
+
+		return this._fromTexture( cubemap, renderTarget );
+
+	}
+
+	/**
+	 * Pre-compiles the cubemap shader. You can get faster start-up by invoking this method during
+	 * your texture's network fetch for increased concurrency.
+	 */
+	compileCubemapShader() {
+
+		if ( this._cubemapMaterial === null ) {
+
+			this._cubemapMaterial = _getCubemapMaterial();
+			this._compileMaterial( this._cubemapMaterial );
+
+		}
+
+	}
+
+	/**
+	 * Pre-compiles the equirectangular shader. You can get faster start-up by invoking this method during
+	 * your texture's network fetch for increased concurrency.
+	 */
+	compileEquirectangularShader() {
+
+		if ( this._equirectMaterial === null ) {
+
+			this._equirectMaterial = _getEquirectMaterial();
+			this._compileMaterial( this._equirectMaterial );
+
+		}
+
+	}
+
+	/**
+	 * Disposes of the PMREMGenerator's internal memory. Note that PMREMGenerator is a static class,
+	 * so you should not need more than one PMREMGenerator object. If you do, calling dispose() on
+	 * one of them will cause any others to also become unusable.
+	 */
+	dispose() {
+
+		this._dispose();
+
+		if ( this._cubemapMaterial !== null ) this._cubemapMaterial.dispose();
+		if ( this._equirectMaterial !== null ) this._equirectMaterial.dispose();
+
+	}
+
+	// private interface
+
+	_setSize( cubeSize ) {
+
+		this._lodMax = Math.floor( Math.log2( cubeSize ) );
+		this._cubeSize = Math.pow( 2, this._lodMax );
+
+	}
+
+	_dispose() {
+
+		if ( this._blurMaterial !== null ) this._blurMaterial.dispose();
+
+		if ( this._pingPongRenderTarget !== null ) this._pingPongRenderTarget.dispose();
+
+		for ( let i = 0; i < this._lodPlanes.length; i ++ ) {
+
+			this._lodPlanes[ i ].dispose();
+
+		}
+
+	}
+
+	_cleanup( outputTarget ) {
+
+		this._renderer.setRenderTarget( _oldTarget, _oldActiveCubeFace, _oldActiveMipmapLevel );
+		this._renderer.xr.enabled = _oldXrEnabled;
+
+		outputTarget.scissorTest = false;
+		_setViewport( outputTarget, 0, 0, outputTarget.width, outputTarget.height );
+
+	}
+
+	_fromTexture( texture, renderTarget ) {
+
+		if ( texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping ) {
+
+			this._setSize( texture.image.length === 0 ? 16 : ( texture.image[ 0 ].width || texture.image[ 0 ].image.width ) );
+
+		} else { // Equirectangular
+
+			this._setSize( texture.image.width / 4 );
+
+		}
+
+		_oldTarget = this._renderer.getRenderTarget();
+		_oldActiveCubeFace = this._renderer.getActiveCubeFace();
+		_oldActiveMipmapLevel = this._renderer.getActiveMipmapLevel();
+		_oldXrEnabled = this._renderer.xr.enabled;
+
+		this._renderer.xr.enabled = false;
+
+		const cubeUVRenderTarget = renderTarget || this._allocateTargets();
+		this._textureToCubeUV( texture, cubeUVRenderTarget );
+		this._applyPMREM( cubeUVRenderTarget );
+		this._cleanup( cubeUVRenderTarget );
+
+		return cubeUVRenderTarget;
+
+	}
+
+	_allocateTargets() {
+
+		const width = 3 * Math.max( this._cubeSize, 16 * 7 );
+		const height = 4 * this._cubeSize;
+
+		const params = {
+			magFilter: LinearFilter,
+			minFilter: LinearFilter,
+			generateMipmaps: false,
+			type: HalfFloatType,
+			format: RGBAFormat,
+			colorSpace: LinearSRGBColorSpace,
+			depthBuffer: false
+		};
+
+		const cubeUVRenderTarget = _createRenderTarget( width, height, params );
+
+		if ( this._pingPongRenderTarget === null || this._pingPongRenderTarget.width !== width || this._pingPongRenderTarget.height !== height ) {
+
+			if ( this._pingPongRenderTarget !== null ) {
+
+				this._dispose();
+
+			}
+
+			this._pingPongRenderTarget = _createRenderTarget( width, height, params );
+
+			const { _lodMax } = this;
+			( { sizeLods: this._sizeLods, lodPlanes: this._lodPlanes, sigmas: this._sigmas } = _createPlanes( _lodMax ) );
+
+			this._blurMaterial = _getBlurShader( _lodMax, width, height );
+
+		}
+
+		return cubeUVRenderTarget;
+
+	}
+
+	_compileMaterial( material ) {
+
+		const tmpMesh = new Mesh( this._lodPlanes[ 0 ], material );
+		this._renderer.compile( tmpMesh, _flatCamera );
+
+	}
+
+	_sceneToCubeUV( scene, near, far, cubeUVRenderTarget ) {
+
+		const fov = 90;
+		const aspect = 1;
+		const cubeCamera = new PerspectiveCamera( fov, aspect, near, far );
+		const upSign = [ 1, - 1, 1, 1, 1, 1 ];
+		const forwardSign = [ 1, 1, 1, - 1, - 1, - 1 ];
+		const renderer = this._renderer;
+
+		const originalAutoClear = renderer.autoClear;
+		const toneMapping = renderer.toneMapping;
+		renderer.getClearColor( _clearColor );
+
+		renderer.toneMapping = NoToneMapping;
+		renderer.autoClear = false;
+
+		const backgroundMaterial = new MeshBasicMaterial( {
+			name: 'PMREM.Background',
+			side: BackSide,
+			depthWrite: false,
+			depthTest: false,
+		} );
+
+		const backgroundBox = new Mesh( new BoxGeometry(), backgroundMaterial );
+
+		let useSolidColor = false;
+		const background = scene.background;
+
+		if ( background ) {
+
+			if ( background.isColor ) {
+
+				backgroundMaterial.color.copy( background );
+				scene.background = null;
+				useSolidColor = true;
+
+			}
+
+		} else {
+
+			backgroundMaterial.color.copy( _clearColor );
+			useSolidColor = true;
+
+		}
+
+		for ( let i = 0; i < 6; i ++ ) {
+
+			const col = i % 3;
+
+			if ( col === 0 ) {
+
+				cubeCamera.up.set( 0, upSign[ i ], 0 );
+				cubeCamera.lookAt( forwardSign[ i ], 0, 0 );
+
+			} else if ( col === 1 ) {
+
+				cubeCamera.up.set( 0, 0, upSign[ i ] );
+				cubeCamera.lookAt( 0, forwardSign[ i ], 0 );
+
+			} else {
+
+				cubeCamera.up.set( 0, upSign[ i ], 0 );
+				cubeCamera.lookAt( 0, 0, forwardSign[ i ] );
+
+			}
+
+			const size = this._cubeSize;
+
+			_setViewport( cubeUVRenderTarget, col * size, i > 2 ? size : 0, size, size );
+
+			renderer.setRenderTarget( cubeUVRenderTarget );
+
+			if ( useSolidColor ) {
+
+				renderer.render( backgroundBox, cubeCamera );
+
+			}
+
+			renderer.render( scene, cubeCamera );
+
+		}
+
+		backgroundBox.geometry.dispose();
+		backgroundBox.material.dispose();
+
+		renderer.toneMapping = toneMapping;
+		renderer.autoClear = originalAutoClear;
+		scene.background = background;
+
+	}
+
+	_textureToCubeUV( texture, cubeUVRenderTarget ) {
+
+		const renderer = this._renderer;
+
+		const isCubeTexture = ( texture.mapping === CubeReflectionMapping || texture.mapping === CubeRefractionMapping );
+
+		if ( isCubeTexture ) {
+
+			if ( this._cubemapMaterial === null ) {
+
+				this._cubemapMaterial = _getCubemapMaterial();
+
+			}
+
+			this._cubemapMaterial.uniforms.flipEnvMap.value = ( texture.isRenderTargetTexture === false ) ? - 1 : 1;
+
+		} else {
+
+			if ( this._equirectMaterial === null ) {
+
+				this._equirectMaterial = _getEquirectMaterial();
+
+			}
+
+		}
+
+		const material = isCubeTexture ? this._cubemapMaterial : this._equirectMaterial;
+		const mesh = new Mesh( this._lodPlanes[ 0 ], material );
+
+		const uniforms = material.uniforms;
+
+		uniforms[ 'envMap' ].value = texture;
+
+		const size = this._cubeSize;
+
+		_setViewport( cubeUVRenderTarget, 0, 0, 3 * size, 2 * size );
+
+		renderer.setRenderTarget( cubeUVRenderTarget );
+		renderer.render( mesh, _flatCamera );
+
+	}
+
+	_applyPMREM( cubeUVRenderTarget ) {
+
+		const renderer = this._renderer;
+		const autoClear = renderer.autoClear;
+		renderer.autoClear = false;
+		const n = this._lodPlanes.length;
+
+		for ( let i = 1; i < n; i ++ ) {
+
+			const sigma = Math.sqrt( this._sigmas[ i ] * this._sigmas[ i ] - this._sigmas[ i - 1 ] * this._sigmas[ i - 1 ] );
+
+			const poleAxis = _axisDirections[ ( n - i - 1 ) % _axisDirections.length ];
+
+			this._blur( cubeUVRenderTarget, i - 1, i, sigma, poleAxis );
+
+		}
+
+		renderer.autoClear = autoClear;
+
+	}
+
+	/**
+	 * This is a two-pass Gaussian blur for a cubemap. Normally this is done
+	 * vertically and horizontally, but this breaks down on a cube. Here we apply
+	 * the blur latitudinally (around the poles), and then longitudinally (towards
+	 * the poles) to approximate the orthogonally-separable blur. It is least
+	 * accurate at the poles, but still does a decent job.
+	 */
+	_blur( cubeUVRenderTarget, lodIn, lodOut, sigma, poleAxis ) {
+
+		const pingPongRenderTarget = this._pingPongRenderTarget;
+
+		this._halfBlur(
+			cubeUVRenderTarget,
+			pingPongRenderTarget,
+			lodIn,
+			lodOut,
+			sigma,
+			'latitudinal',
+			poleAxis );
+
+		this._halfBlur(
+			pingPongRenderTarget,
+			cubeUVRenderTarget,
+			lodOut,
+			lodOut,
+			sigma,
+			'longitudinal',
+			poleAxis );
+
+	}
+
+	_halfBlur( targetIn, targetOut, lodIn, lodOut, sigmaRadians, direction, poleAxis ) {
+
+		const renderer = this._renderer;
+		const blurMaterial = this._blurMaterial;
+
+		if ( direction !== 'latitudinal' && direction !== 'longitudinal' ) {
+
+			console.error(
+				'blur direction must be either latitudinal or longitudinal!' );
+
+		}
+
+		// Number of standard deviations at which to cut off the discrete approximation.
+		const STANDARD_DEVIATIONS = 3;
+
+		const blurMesh = new Mesh( this._lodPlanes[ lodOut ], blurMaterial );
+		const blurUniforms = blurMaterial.uniforms;
+
+		const pixels = this._sizeLods[ lodIn ] - 1;
+		const radiansPerPixel = isFinite( sigmaRadians ) ? Math.PI / ( 2 * pixels ) : 2 * Math.PI / ( 2 * MAX_SAMPLES - 1 );
+		const sigmaPixels = sigmaRadians / radiansPerPixel;
+		const samples = isFinite( sigmaRadians ) ? 1 + Math.floor( STANDARD_DEVIATIONS * sigmaPixels ) : MAX_SAMPLES;
+
+		if ( samples > MAX_SAMPLES ) {
+
+			console.warn( `sigmaRadians, ${
+				sigmaRadians}, is too large and will clip, as it requested ${
+				samples} samples when the maximum is set to ${MAX_SAMPLES}` );
+
+		}
+
+		const weights = [];
+		let sum = 0;
+
+		for ( let i = 0; i < MAX_SAMPLES; ++ i ) {
+
+			const x = i / sigmaPixels;
+			const weight = Math.exp( - x * x / 2 );
+			weights.push( weight );
+
+			if ( i === 0 ) {
+
+				sum += weight;
+
+			} else if ( i < samples ) {
+
+				sum += 2 * weight;
+
+			}
+
+		}
+
+		for ( let i = 0; i < weights.length; i ++ ) {
+
+			weights[ i ] = weights[ i ] / sum;
+
+		}
+
+		blurUniforms[ 'envMap' ].value = targetIn.texture;
+		blurUniforms[ 'samples' ].value = samples;
+		blurUniforms[ 'weights' ].value = weights;
+		blurUniforms[ 'latitudinal' ].value = direction === 'latitudinal';
+
+		if ( poleAxis ) {
+
+			blurUniforms[ 'poleAxis' ].value = poleAxis;
+
+		}
+
+		const { _lodMax } = this;
+		blurUniforms[ 'dTheta' ].value = radiansPerPixel;
+		blurUniforms[ 'mipInt' ].value = _lodMax - lodIn;
+
+		const outputSize = this._sizeLods[ lodOut ];
+		const x = 3 * outputSize * ( lodOut > _lodMax - LOD_MIN ? lodOut - _lodMax + LOD_MIN : 0 );
+		const y = 4 * ( this._cubeSize - outputSize );
+
+		_setViewport( targetOut, x, y, 3 * outputSize, 2 * outputSize );
+		renderer.setRenderTarget( targetOut );
+		renderer.render( blurMesh, _flatCamera );
+
+	}
+
+}
+
+
+
+function _createPlanes( lodMax ) {
+
+	const lodPlanes = [];
+	const sizeLods = [];
+	const sigmas = [];
+
+	let lod = lodMax;
+
+	const totalLods = lodMax - LOD_MIN + 1 + EXTRA_LOD_SIGMA.length;
+
+	for ( let i = 0; i < totalLods; i ++ ) {
+
+		const sizeLod = Math.pow( 2, lod );
+		sizeLods.push( sizeLod );
+		let sigma = 1.0 / sizeLod;
+
+		if ( i > lodMax - LOD_MIN ) {
+
+			sigma = EXTRA_LOD_SIGMA[ i - lodMax + LOD_MIN - 1 ];
+
+		} else if ( i === 0 ) {
+
+			sigma = 0;
+
+		}
+
+		sigmas.push( sigma );
+
+		const texelSize = 1.0 / ( sizeLod - 2 );
+		const min = - texelSize;
+		const max = 1 + texelSize;
+		const uv1 = [ min, min, max, min, max, max, min, min, max, max, min, max ];
+
+		const cubeFaces = 6;
+		const vertices = 6;
+		const positionSize = 3;
+		const uvSize = 2;
+		const faceIndexSize = 1;
+
+		const position = new Float32Array( positionSize * vertices * cubeFaces );
+		const uv = new Float32Array( uvSize * vertices * cubeFaces );
+		const faceIndex = new Float32Array( faceIndexSize * vertices * cubeFaces );
+
+		for ( let face = 0; face < cubeFaces; face ++ ) {
+
+			const x = ( face % 3 ) * 2 / 3 - 1;
+			const y = face > 2 ? 0 : - 1;
+			const coordinates = [
+				x, y, 0,
+				x + 2 / 3, y, 0,
+				x + 2 / 3, y + 1, 0,
+				x, y, 0,
+				x + 2 / 3, y + 1, 0,
+				x, y + 1, 0
+			];
+			position.set( coordinates, positionSize * vertices * face );
+			uv.set( uv1, uvSize * vertices * face );
+			const fill = [ face, face, face, face, face, face ];
+			faceIndex.set( fill, faceIndexSize * vertices * face );
+
+		}
+
+		const planes = new BufferGeometry();
+		planes.setAttribute( 'position', new BufferAttribute( position, positionSize ) );
+		planes.setAttribute( 'uv', new BufferAttribute( uv, uvSize ) );
+		planes.setAttribute( 'faceIndex', new BufferAttribute( faceIndex, faceIndexSize ) );
+		lodPlanes.push( planes );
+
+		if ( lod > LOD_MIN ) {
+
+			lod --;
+
+		}
+
+	}
+
+	return { lodPlanes, sizeLods, sigmas };
+
+}
+
+function _createRenderTarget( width, height, params ) {
+
+	const cubeUVRenderTarget = new WebGLRenderTarget( width, height, params );
+	cubeUVRenderTarget.texture.mapping = CubeUVReflectionMapping;
+	cubeUVRenderTarget.texture.name = 'PMREM.cubeUv';
+	cubeUVRenderTarget.scissorTest = true;
+	return cubeUVRenderTarget;
+
+}
+
+function _setViewport( target, x, y, width, height ) {
+
+	target.viewport.set( x, y, width, height );
+	target.scissor.set( x, y, width, height );
+
+}
+
+function _getBlurShader( lodMax, width, height ) {
+
+	const weights = new Float32Array( MAX_SAMPLES );
+	const poleAxis = new Vector3( 0, 1, 0 );
+	const shaderMaterial = new ShaderMaterial( {
+
+		name: 'SphericalGaussianBlur',
+
+		defines: {
+			'n': MAX_SAMPLES,
+			'CUBEUV_TEXEL_WIDTH': 1.0 / width,
+			'CUBEUV_TEXEL_HEIGHT': 1.0 / height,
+			'CUBEUV_MAX_MIP': `${lodMax}.0`,
+		},
+
+		uniforms: {
+			'envMap': { value: null },
+			'samples': { value: 1 },
+			'weights': { value: weights },
+			'latitudinal': { value: false },
+			'dTheta': { value: 0 },
+			'mipInt': { value: 0 },
+			'poleAxis': { value: poleAxis }
+		},
+
+		vertexShader: _getCommonVertexShader(),
+
+		fragmentShader: /* glsl */`
+
+			precision mediump float;
+			precision mediump int;
+
+			varying vec3 vOutputDirection;
+
+			uniform sampler2D envMap;
+			uniform int samples;
+			uniform float weights[ n ];
+			uniform bool latitudinal;
+			uniform float dTheta;
+			uniform float mipInt;
+			uniform vec3 poleAxis;
+
+			#define ENVMAP_TYPE_CUBE_UV
+			#include <cube_uv_reflection_fragment>
+
+			vec3 getSample( float theta, vec3 axis ) {
+
+				float cosTheta = cos( theta );
+				// Rodrigues' axis-angle rotation
+				vec3 sampleDirection = vOutputDirection * cosTheta
+					+ cross( axis, vOutputDirection ) * sin( theta )
+					+ axis * dot( axis, vOutputDirection ) * ( 1.0 - cosTheta );
+
+				return bilinearCubeUV( envMap, sampleDirection, mipInt );
+
+			}
+
+			void main() {
+
+				vec3 axis = latitudinal ? poleAxis : cross( poleAxis, vOutputDirection );
+
+				if ( all( equal( axis, vec3( 0.0 ) ) ) ) {
+
+					axis = vec3( vOutputDirection.z, 0.0, - vOutputDirection.x );
+
+				}
+
+				axis = normalize( axis );
+
+				gl_FragColor = vec4( 0.0, 0.0, 0.0, 1.0 );
+				gl_FragColor.rgb += weights[ 0 ] * getSample( 0.0, axis );
+
+				for ( int i = 1; i < n; i++ ) {
+
+					if ( i >= samples ) {
+
+						break;
+
+					}
+
+					float theta = dTheta * float( i );
+					gl_FragColor.rgb += weights[ i ] * getSample( -1.0 * theta, axis );
+					gl_FragColor.rgb += weights[ i ] * getSample( theta, axis );
+
+				}
+
+			}
+		`,
+
+		blending: NoBlending,
+		depthTest: false,
+		depthWrite: false
+
+	} );
+
+	return shaderMaterial;
+
+}
+
+function _getEquirectMaterial() {
+
+	return new ShaderMaterial( {
+
+		name: 'EquirectangularToCubeUV',
+
+		uniforms: {
+			'envMap': { value: null }
+		},
+
+		vertexShader: _getCommonVertexShader(),
+
+		fragmentShader: /* glsl */`
+
+			precision mediump float;
+			precision mediump int;
+
+			varying vec3 vOutputDirection;
+
+			uniform sampler2D envMap;
+
+			#include <common>
+
+			void main() {
+
+				vec3 outputDirection = normalize( vOutputDirection );
+				vec2 uv = equirectUv( outputDirection );
+
+				gl_FragColor = vec4( texture2D ( envMap, uv ).rgb, 1.0 );
+
+			}
+		`,
+
+		blending: NoBlending,
+		depthTest: false,
+		depthWrite: false
+
+	} );
+
+}
+
+function _getCubemapMaterial() {
+
+	return new ShaderMaterial( {
+
+		name: 'CubemapToCubeUV',
+
+		uniforms: {
+			'envMap': { value: null },
+			'flipEnvMap': { value: - 1 }
+		},
+
+		vertexShader: _getCommonVertexShader(),
+
+		fragmentShader: /* glsl */`
+
+			precision mediump float;
+			precision mediump int;
+
+			uniform float flipEnvMap;
+
+			varying vec3 vOutputDirection;
+
+			uniform samplerCube envMap;
+
+			void main() {
+
+				gl_FragColor = textureCube( envMap, vec3( flipEnvMap * vOutputDirection.x, vOutputDirection.yz ) );
+
+			}
+		`,
+
+		blending: NoBlending,
+		depthTest: false,
+		depthWrite: false
+
+	} );
+
+}
+
+function _getCommonVertexShader() {
+
+	return /* glsl */`
+
+		precision mediump float;
+		precision mediump int;
+
+		attribute float faceIndex;
+
+		varying vec3 vOutputDirection;
+
+		// RH coordinate system; PMREM face-indexing convention
+		vec3 getDirection( vec2 uv, float face ) {
+
+			uv = 2.0 * uv - 1.0;
+
+			vec3 direction = vec3( uv, 1.0 );
+
+			if ( face == 0.0 ) {
+
+				direction = direction.zyx; // ( 1, v, u ) pos x
+
+			} else if ( face == 1.0 ) {
+
+				direction = direction.xzy;
+				direction.xz *= -1.0; // ( -u, 1, -v ) pos y
+
+			} else if ( face == 2.0 ) {
+
+				direction.x *= -1.0; // ( -u, v, 1 ) pos z
+
+			} else if ( face == 3.0 ) {
+
+				direction = direction.zyx;
+				direction.xz *= -1.0; // ( -1, v, -u ) neg x
+
+			} else if ( face == 4.0 ) {
+
+				direction = direction.xzy;
+				direction.xy *= -1.0; // ( -u, -1, v ) neg y
+
+			} else if ( face == 5.0 ) {
+
+				direction.z *= -1.0; // ( u, v, -1 ) neg z
+
+			}
+
+			return direction;
+
+		}
+
+		void main() {
+
+			vOutputDirection = getDirection( uv, faceIndex );
+			gl_Position = vec4( position, 1.0 );
+
+		}
+	`;
+
+}
+
+function WebGLCubeUVMaps( renderer ) {
+
+	let cubeUVmaps = new WeakMap();
+
+	let pmremGenerator = null;
+
+	function get( texture ) {
+
+		if ( texture && texture.isTexture ) {
+
+			const mapping = texture.mapping;
+
+			const isEquirectMap = ( mapping === EquirectangularReflectionMapping || mapping === EquirectangularRefractionMapping );
+			const isCubeMap = ( mapping === CubeReflectionMapping || mapping === CubeRefractionMapping );
+
+			// equirect/cube map to cubeUV conversion
+
+			if ( isEquirectMap || isCubeMap ) {
+
+				let renderTarget = cubeUVmaps.get( texture );
+
+				const currentPMREMVersion = renderTarget !== undefined ? renderTarget.texture.pmremVersion : 0;
+
+				if ( texture.isRenderTargetTexture && texture.pmremVersion !== currentPMREMVersion ) {
+
+					if ( pmremGenerator === null ) pmremGenerator = new PMREMGenerator( renderer );
+
+					renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular( texture, renderTarget ) : pmremGenerator.fromCubemap( texture, renderTarget );
+					renderTarget.texture.pmremVersion = texture.pmremVersion;
+
+					cubeUVmaps.set( texture, renderTarget );
+
+					return renderTarget.texture;
+
+				} else {
+
+					if ( renderTarget !== undefined ) {
+
+						return renderTarget.texture;
+
+					} else {
+
+						const image = texture.image;
+
+						if ( ( isEquirectMap && image && image.height > 0 ) || ( isCubeMap && image && isCubeTextureComplete( image ) ) ) {
+
+							if ( pmremGenerator === null ) pmremGenerator = new PMREMGenerator( renderer );
+
+							renderTarget = isEquirectMap ? pmremGenerator.fromEquirectangular( texture ) : pmremGenerator.fromCubemap( texture );
+							renderTarget.texture.pmremVersion = texture.pmremVersion;
+
+							cubeUVmaps.set( texture, renderTarget );
+
+							texture.addEventListener( 'dispose', onTextureDispose );
+
+							return renderTarget.texture;
+
+						} else {
+
+							// image not yet ready. try the conversion next frame
+
+							return null;
+
+						}
+
+					}
+
+				}
+
+			}
+
+		}
+
+		return texture;
+
+	}
+
+	function isCubeTextureComplete( image ) {
+
+		let count = 0;
+		const length = 6;
+
+		for ( let i = 0; i < length; i ++ ) {
+
+			if ( image[ i ] !== undefined ) count ++;
+
+		}
+
+		return count === length;
+
+
+	}
+
+	function onTextureDispose( event ) {
+
+		const texture = event.target;
+
+		texture.removeEventListener( 'dispose', onTextureDispose );
+
+		const cubemapUV = cubeUVmaps.get( texture );
+
+		if ( cubemapUV !== undefined ) {
+
+			cubeUVmaps.delete( texture );
+			cubemapUV.dispose();
+
+		}
+
+	}
+
+	function dispose() {
+
+		cubeUVmaps = new WeakMap();
+
+		if ( pmremGenerator !== null ) {
+
+			pmremGenerator.dispose();
+			pmremGenerator = null;
+
+		}
+
+	}
+
+	return {
+		get: get,
+		dispose: dispose
+	};
+
+}
+
+function WebGLExtensions( gl ) {
+
+	const extensions = {};
+
+	function getExtension( name ) {
+
+		if ( extensions[ name ] !== undefined ) {
+
+			return extensions[ name ];
+
+		}
+
+		let extension;
+
+		switch ( name ) {
+
+			case 'WEBGL_depth_texture':
+				extension = gl.getExtension( 'WEBGL_depth_texture' ) || gl.getExtension( 'MOZ_WEBGL_depth_texture' ) || gl.getExtension( 'WEBKIT_WEBGL_depth_texture' );
+				break;
+
+			case 'EXT_texture_filter_anisotropic':
+				extension = gl.getExtension( 'EXT_texture_filter_anisotropic' ) || gl.getExtension( 'MOZ_EXT_texture_filter_anisotropic' ) || gl.getExtension( 'WEBKIT_EXT_texture_filter_anisotropic' );
+				break;
+
+			case 'WEBGL_compressed_texture_s3tc':
+				extension = gl.getExtension( 'WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'MOZ_WEBGL_compressed_texture_s3tc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_s3tc' );
+				break;
+
+			case 'WEBGL_compressed_texture_pvrtc':
+				extension = gl.getExtension( 'WEBGL_compressed_texture_pvrtc' ) || gl.getExtension( 'WEBKIT_WEBGL_compressed_texture_pvrtc' );
+				break;
+
+			default:
+				extension = gl.getExtension( name );
+
+		}
+
+		extensions[ name ] = extension;
+
+		return extension;
+
+	}
+
+	return {
+
+		has: function ( name ) {
+
+			return getExtension( name ) !== null;
+
+		},
+
+		init: function () {
+
+			getExtension( 'EXT_color_buffer_float' );
+			getExtension( 'WEBGL_clip_cull_distance' );
+			getExtension( 'OES_texture_float_linear' );
+			getExtension( 'EXT_color_buffer_half_float' );
+			getExtension( 'WEBGL_multisampled_render_to_texture' );
+			getExtension( 'WEBGL_render_shared_exponent' );
+
+		},
+
+		get: function ( name ) {
+
+			const extension = getExtension( name );
+
+			if ( extension === null ) {
+
+				warnOnce( 'THREE.WebGLRenderer: ' + name + ' extension not supported.' );
+
+			}
+
+			return extension;
+
+		}
+
+	};
+
+}
+
+function WebGLGeometries( gl, attributes, info, bindingStates ) {
+
+	const geometries = {};
+	const wireframeAttributes = new WeakMap();
+
+	function onGeometryDispose( event ) {
+
+		const geometry = event.target;
+
+		if ( geometry.index !== null ) {
+
+			attributes.remove( geometry.index );
+
+		}
+
+		for ( const name in geometry.attributes ) {
+
+			attributes.remove( geometry.attributes[ name ] );
+
+		}
+
+		for ( const name in geometry.morphAttributes ) {
+
+			const array = geometry.morphAttributes[ name ];
+
+			for ( let i = 0, l = array.length; i < l; i ++ ) {
+
+				attributes.remove( array[ i ] );
+
+			}
+
+		}
+
+		geometry.removeEventListener( 'dispose', onGeometryDispose );
+
+		delete geometries[ geometry.id ];
+
+		const attribute = wireframeAttributes.get( geometry );
+
+		if ( attribute ) {
+
+			attributes.remove( attribute );
+			wireframeAttributes.delete( geometry );
+
+		}
+
+		bindingStates.releaseStatesOfGeometry( geometry );
+
+		if ( geometry.isInstancedBufferGeometry === true ) {
+
+			delete geometry._maxInstanceCount;
+
+		}
+
+		//
+
+		info.memory.geometries --;
+
+	}
+
+	function get( object, geometry ) {
+
+		if ( geometries[ geometry.id ] === true ) return geometry;
+
+		geometry.addEventListener( 'dispose', onGeometryDispose );
+
+		geometries[ geometry.id ] = true;
+
+		info.memory.geometries ++;
+
+		return geometry;
+
+	}
+
+	function update( geometry ) {
+
+		const geometryAttributes = geometry.attributes;
+
+		// Updating index buffer in VAO now. See WebGLBindingStates.
+
+		for ( const name in geometryAttributes ) {
+
+			attributes.update( geometryAttributes[ name ], gl.ARRAY_BUFFER );
+
+		}
+
+		// morph targets
+
+		const morphAttributes = geometry.morphAttributes;
+
+		for ( const name in morphAttributes ) {
+
+			const array = morphAttributes[ name ];
+
+			for ( let i = 0, l = array.length; i < l; i ++ ) {
+
+				attributes.update( array[ i ], gl.ARRAY_BUFFER );
+
+			}
+
+		}
+
+	}
+
+	function updateWireframeAttribute( geometry ) {
+
+		const indices = [];
+
+		const geometryIndex = geometry.index;
+		const geometryPosition = geometry.attributes.position;
+		let version = 0;
+
+		if ( geometryIndex !== null ) {
+
+			const array = geometryIndex.array;
+			version = geometryIndex.version;
+
+			for ( let i = 0, l = array.length; i < l; i += 3 ) {
+
+				const a = array[ i + 0 ];
+				const b = array[ i + 1 ];
+				const c = array[ i + 2 ];
+
+				indices.push( a, b, b, c, c, a );
+
+			}
+
+		} else if ( geometryPosition !== undefined ) {
+
+			const array = geometryPosition.array;
+			version = geometryPosition.version;
+
+			for ( let i = 0, l = ( array.length / 3 ) - 1; i < l; i += 3 ) {
+
+				const a = i + 0;
+				const b = i + 1;
+				const c = i + 2;
+
+				indices.push( a, b, b, c, c, a );
+
+			}
+
+		} else {
+
+			return;
+
+		}
+
+		const attribute = new ( arrayNeedsUint32( indices ) ? Uint32BufferAttribute : Uint16BufferAttribute )( indices, 1 );
+		attribute.version = version;
+
+		// Updating index buffer in VAO now. See WebGLBindingStates
+
+		//
+
+		const previousAttribute = wireframeAttributes.get( geometry );
+
+		if ( previousAttribute ) attributes.remove( previousAttribute );
+
+		//
+
+		wireframeAttributes.set( geometry, attribute );
+
+	}
+
+	function getWireframeAttribute( geometry ) {
+
+		const currentAttribute = wireframeAttributes.get( geometry );
+
+		if ( currentAttribute ) {
+
+			const geometryIndex = geometry.index;
+
+			if ( geometryIndex !== null ) {
+
+				// if the attribute is obsolete, create a new one
+
+				if ( currentAttribute.version < geometryIndex.version ) {
+
+					updateWireframeAttribute( geometry );
+
+				}
+
+			}
+
+		} else {
+
+			updateWireframeAttribute( geometry );
+
+		}
+
+		return wireframeAttributes.get( geometry );
+
+	}
+
+	return {
+
+		get: get,
+		update: update,
+
+		getWireframeAttribute: getWireframeAttribute
+
+	};
+
+}
+
+function WebGLIndexedBufferRenderer( gl, extensions, info ) {
+
+	let mode;
+
+	function setMode( value ) {
+
+		mode = value;
+
+	}
+
+	let type, bytesPerElement;
+
+	function setIndex( value ) {
+
+		type = value.type;
+		bytesPerElement = value.bytesPerElement;
+
+	}
+
+	function render( start, count ) {
+
+		gl.drawElements( mode, count, type, start * bytesPerElement );
+
+		info.update( count, mode, 1 );
+
+	}
+
+	function renderInstances( start, count, primcount ) {
+
+		if ( primcount === 0 ) return;
+
+		gl.drawElementsInstanced( mode, count, type, start * bytesPerElement, primcount );
+
+		info.update( count, mode, primcount );
+
+	}
+
+	function renderMultiDraw( starts, counts, drawCount ) {
+
+		if ( drawCount === 0 ) return;
+
+		const extension = extensions.get( 'WEBGL_multi_draw' );
+		extension.multiDrawElementsWEBGL( mode, counts, 0, type, starts, 0, drawCount );
+
+		let elementCount = 0;
+		for ( let i = 0; i < drawCount; i ++ ) {
+
+			elementCount += counts[ i ];
+
+		}
+
+		info.update( elementCount, mode, 1 );
+
+
+	}
+
+	function renderMultiDrawInstances( starts, counts, drawCount, primcount ) {
+
+		if ( drawCount === 0 ) return;
+
+		const extension = extensions.get( 'WEBGL_multi_draw' );
+
+		if ( extension === null ) {
+
+			for ( let i = 0; i < starts.length; i ++ ) {
+
+				renderInstances( starts[ i ] / bytesPerElement, counts[ i ], primcount[ i ] );
+
+			}
+
+		} else {
+
+			extension.multiDrawElementsInstancedWEBGL( mode, counts, 0, type, starts, 0, primcount, 0, drawCount );
+
+			let elementCount = 0;
+			for ( let i = 0; i < drawCount; i ++ ) {
+
+				elementCount += counts[ i ];
+
+			}
+
+			for ( let i = 0; i < primcount.length; i ++ ) {
+
+				info.update( elementCount, mode, primcount[ i ] );
+
+			}
+
+		}
+
+	}
+
+	//
+
+	this.setMode = setMode;
+	this.setIndex = setIndex;
+	this.render = render;
+	this.renderInstances = renderInstances;
+	this.renderMultiDraw = renderMultiDraw;
+	this.renderMultiDrawInstances = renderMultiDrawInstances;
+
+}
+
+function WebGLInfo( gl ) {
+
+	const memory = {
+		geometries: 0,
+		textures: 0
+	};
+
+	const render = {
+		frame: 0,
+		calls: 0,
+		triangles: 0,
+		points: 0,
+		lines: 0
+	};
+
+	function update( count, mode, instanceCount ) {
+
+		render.calls ++;
+
+		switch ( mode ) {
+
+			case gl.TRIANGLES:
+				render.triangles += instanceCount * ( count / 3 );
+				break;
+
+			case gl.LINES:
+				render.lines += instanceCount * ( count / 2 );
+				break;
+
+			case gl.LINE_STRIP:
+				render.lines += instanceCount * ( count - 1 );
+				break;
+
+			case gl.LINE_LOOP:
+				render.lines += instanceCount * count;
+				break;
+
+			case gl.POINTS:
+				render.points += instanceCount * count;
+				break;
+
+			default:
+				console.error( 'THREE.WebGLInfo: Unknown draw mode:', mode );
+				break;
+
+		}
+
+	}
+
+	function reset() {
+
+		render.calls = 0;
+		render.triangles = 0;
+		render.points = 0;
+		render.lines = 0;
+
+	}
+
+	return {
+		memory: memory,
+		render: render,
+		programs: null,
+		autoReset: true,
+		reset: reset,
+		update: update
+	};
+
+}
+
+function WebGLMorphtargets( gl, capabilities, textures ) {
+
+	const morphTextures = new WeakMap();
+	const morph = new Vector4();
+
+	function update( object, geometry, program ) {
+
+		const objectInfluences = object.morphTargetInfluences;
+
+		// the following encodes morph targets into an array of data textures. Each layer represents a single morph target.
+
+		const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
+		const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;
+
+		let entry = morphTextures.get( geometry );
+
+		if ( entry === undefined || entry.count !== morphTargetsCount ) {
+
+			if ( entry !== undefined ) entry.texture.dispose();
+
+			const hasMorphPosition = geometry.morphAttributes.position !== undefined;
+			const hasMorphNormals = geometry.morphAttributes.normal !== undefined;
+			const hasMorphColors = geometry.morphAttributes.color !== undefined;
+
+			const morphTargets = geometry.morphAttributes.position || [];
+			const morphNormals = geometry.morphAttributes.normal || [];
+			const morphColors = geometry.morphAttributes.color || [];
+
+			let vertexDataCount = 0;
+
+			if ( hasMorphPosition === true ) vertexDataCount = 1;
+			if ( hasMorphNormals === true ) vertexDataCount = 2;
+			if ( hasMorphColors === true ) vertexDataCount = 3;
+
+			let width = geometry.attributes.position.count * vertexDataCount;
+			let height = 1;
+
+			if ( width > capabilities.maxTextureSize ) {
+
+				height = Math.ceil( width / capabilities.maxTextureSize );
+				width = capabilities.maxTextureSize;
+
+			}
+
+			const buffer = new Float32Array( width * height * 4 * morphTargetsCount );
+
+			const texture = new DataArrayTexture( buffer, width, height, morphTargetsCount );
+			texture.type = FloatType;
+			texture.needsUpdate = true;
+
+			// fill buffer
+
+			const vertexDataStride = vertexDataCount * 4;
+
+			for ( let i = 0; i < morphTargetsCount; i ++ ) {
+
+				const morphTarget = morphTargets[ i ];
+				const morphNormal = morphNormals[ i ];
+				const morphColor = morphColors[ i ];
+
+				const offset = width * height * 4 * i;
+
+				for ( let j = 0; j < morphTarget.count; j ++ ) {
+
+					const stride = j * vertexDataStride;
+
+					if ( hasMorphPosition === true ) {
+
+						morph.fromBufferAttribute( morphTarget, j );
+
+						buffer[ offset + stride + 0 ] = morph.x;
+						buffer[ offset + stride + 1 ] = morph.y;
+						buffer[ offset + stride + 2 ] = morph.z;
+						buffer[ offset + stride + 3 ] = 0;
+
+					}
+
+					if ( hasMorphNormals === true ) {
+
+						morph.fromBufferAttribute( morphNormal, j );
+
+						buffer[ offset + stride + 4 ] = morph.x;
+						buffer[ offset + stride + 5 ] = morph.y;
+						buffer[ offset + stride + 6 ] = morph.z;
+						buffer[ offset + stride + 7 ] = 0;
+
+					}
+
+					if ( hasMorphColors === true ) {
+
+						morph.fromBufferAttribute( morphColor, j );
+
+						buffer[ offset + stride + 8 ] = morph.x;
+						buffer[ offset + stride + 9 ] = morph.y;
+						buffer[ offset + stride + 10 ] = morph.z;
+						buffer[ offset + stride + 11 ] = ( morphColor.itemSize === 4 ) ? morph.w : 1;
+
+					}
+
+				}
+
+			}
+
+			entry = {
+				count: morphTargetsCount,
+				texture: texture,
+				size: new Vector2( width, height )
+			};
+
+			morphTextures.set( geometry, entry );
+
+			function disposeTexture() {
+
+				texture.dispose();
+
+				morphTextures.delete( geometry );
+
+				geometry.removeEventListener( 'dispose', disposeTexture );
+
+			}
+
+			geometry.addEventListener( 'dispose', disposeTexture );
+
+		}
+
+		//
+		if ( object.isInstancedMesh === true && object.morphTexture !== null ) {
+
+			program.getUniforms().setValue( gl, 'morphTexture', object.morphTexture, textures );
+
+		} else {
+
+			let morphInfluencesSum = 0;
+
+			for ( let i = 0; i < objectInfluences.length; i ++ ) {
+
+				morphInfluencesSum += objectInfluences[ i ];
+
+			}
+
+			const morphBaseInfluence = geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;
+
+
+			program.getUniforms().setValue( gl, 'morphTargetBaseInfluence', morphBaseInfluence );
+			program.getUniforms().setValue( gl, 'morphTargetInfluences', objectInfluences );
+
+		}
+
+		program.getUniforms().setValue( gl, 'morphTargetsTexture', entry.texture, textures );
+		program.getUniforms().setValue( gl, 'morphTargetsTextureSize', entry.size );
+
+	}
+
+	return {
+
+		update: update
+
+	};
+
+}
+
+function WebGLObjects( gl, geometries, attributes, info ) {
+
+	let updateMap = new WeakMap();
+
+	function update( object ) {
+
+		const frame = info.render.frame;
+
+		const geometry = object.geometry;
+		const buffergeometry = geometries.get( object, geometry );
+
+		// Update once per frame
+
+		if ( updateMap.get( buffergeometry ) !== frame ) {
+
+			geometries.update( buffergeometry );
+
+			updateMap.set( buffergeometry, frame );
+
+		}
+
+		if ( object.isInstancedMesh ) {
+
+			if ( object.hasEventListener( 'dispose', onInstancedMeshDispose ) === false ) {
+
+				object.addEventListener( 'dispose', onInstancedMeshDispose );
+
+			}
+
+			if ( updateMap.get( object ) !== frame ) {
+
+				attributes.update( object.instanceMatrix, gl.ARRAY_BUFFER );
+
+				if ( object.instanceColor !== null ) {
+
+					attributes.update( object.instanceColor, gl.ARRAY_BUFFER );
+
+				}
+
+				updateMap.set( object, frame );
+
+			}
+
+		}
+
+		if ( object.isSkinnedMesh ) {
+
+			const skeleton = object.skeleton;
+
+			if ( updateMap.get( skeleton ) !== frame ) {
+
+				skeleton.update();
+
+				updateMap.set( skeleton, frame );
+
+			}
+
+		}
+
+		return buffergeometry;
+
+	}
+
+	function dispose() {
+
+		updateMap = new WeakMap();
+
+	}
+
+	function onInstancedMeshDispose( event ) {
+
+		const instancedMesh = event.target;
+
+		instancedMesh.removeEventListener( 'dispose', onInstancedMeshDispose );
+
+		attributes.remove( instancedMesh.instanceMatrix );
+
+		if ( instancedMesh.instanceColor !== null ) attributes.remove( instancedMesh.instanceColor );
+
+	}
+
+	return {
+
+		update: update,
+		dispose: dispose
+
+	};
+
+}
+
+class DepthTexture extends Texture {
+
+	constructor( width, height, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, format = DepthFormat ) {
+
+		if ( format !== DepthFormat && format !== DepthStencilFormat ) {
+
+			throw new Error( 'DepthTexture format must be either THREE.DepthFormat or THREE.DepthStencilFormat' );
+
+		}
+
+		if ( type === undefined && format === DepthFormat ) type = UnsignedIntType;
+		if ( type === undefined && format === DepthStencilFormat ) type = UnsignedInt248Type;
+
+		super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
+
+		this.isDepthTexture = true;
+
+		this.image = { width: width, height: height };
+
+		this.magFilter = magFilter !== undefined ? magFilter : NearestFilter;
+		this.minFilter = minFilter !== undefined ? minFilter : NearestFilter;
+
+		this.flipY = false;
+		this.generateMipmaps = false;
+
+		this.compareFunction = null;
+
+	}
+
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.compareFunction = source.compareFunction;
+
+		return this;
+
+	}
+
+	toJSON( meta ) {
+
+		const data = super.toJSON( meta );
+
+		if ( this.compareFunction !== null ) data.compareFunction = this.compareFunction;
+
+		return data;
+
+	}
+
+}
+
+/**
+ * Uniforms of a program.
+ * Those form a tree structure with a special top-level container for the root,
+ * which you get by calling 'new WebGLUniforms( gl, program )'.
+ *
+ *
+ * Properties of inner nodes including the top-level container:
+ *
+ * .seq - array of nested uniforms
+ * .map - nested uniforms by name
+ *
+ *
+ * Methods of all nodes except the top-level container:
+ *
+ * .setValue( gl, value, [textures] )
+ *
+ * 		uploads a uniform value(s)
+ *  	the 'textures' parameter is needed for sampler uniforms
+ *
+ *
+ * Static methods of the top-level container (textures factorizations):
+ *
+ * .upload( gl, seq, values, textures )
+ *
+ * 		sets uniforms in 'seq' to 'values[id].value'
+ *
+ * .seqWithValue( seq, values ) : filteredSeq
+ *
+ * 		filters 'seq' entries with corresponding entry in values
+ *
+ *
+ * Methods of the top-level container (textures factorizations):
+ *
+ * .setValue( gl, name, value, textures )
+ *
+ * 		sets uniform with  name 'name' to 'value'
+ *
+ * .setOptional( gl, obj, prop )
+ *
+ * 		like .set for an optional property of the object
+ *
+ */
+
+
+const emptyTexture = /*@__PURE__*/ new Texture();
+
+const emptyShadowTexture = /*@__PURE__*/ new DepthTexture( 1, 1 );
+
+const emptyArrayTexture = /*@__PURE__*/ new DataArrayTexture();
+const empty3dTexture = /*@__PURE__*/ new Data3DTexture();
+const emptyCubeTexture = /*@__PURE__*/ new CubeTexture();
+
+// --- Utilities ---
+
+// Array Caches (provide typed arrays for temporary by size)
+
+const arrayCacheF32 = [];
+const arrayCacheI32 = [];
+
+// Float32Array caches used for uploading Matrix uniforms
+
+const mat4array = new Float32Array( 16 );
+const mat3array = new Float32Array( 9 );
+const mat2array = new Float32Array( 4 );
+
+// Flattening for arrays of vectors and matrices
+
+function flatten( array, nBlocks, blockSize ) {
+
+	const firstElem = array[ 0 ];
+
+	if ( firstElem <= 0 || firstElem > 0 ) return array;
+	// unoptimized: ! isNaN( firstElem )
+	// see http://jacksondunstan.com/articles/983
+
+	const n = nBlocks * blockSize;
+	let r = arrayCacheF32[ n ];
+
+	if ( r === undefined ) {
+
+		r = new Float32Array( n );
+		arrayCacheF32[ n ] = r;
+
+	}
+
+	if ( nBlocks !== 0 ) {
+
+		firstElem.toArray( r, 0 );
+
+		for ( let i = 1, offset = 0; i !== nBlocks; ++ i ) {
+
+			offset += blockSize;
+			array[ i ].toArray( r, offset );
+
+		}
+
+	}
+
+	return r;
+
+}
+
+function arraysEqual( a, b ) {
+
+	if ( a.length !== b.length ) return false;
+
+	for ( let i = 0, l = a.length; i < l; i ++ ) {
+
+		if ( a[ i ] !== b[ i ] ) return false;
+
+	}
+
+	return true;
+
+}
+
+function copyArray( a, b ) {
+
+	for ( let i = 0, l = b.length; i < l; i ++ ) {
+
+		a[ i ] = b[ i ];
+
+	}
+
+}
+
+// Texture unit allocation
+
+function allocTexUnits( textures, n ) {
+
+	let r = arrayCacheI32[ n ];
+
+	if ( r === undefined ) {
+
+		r = new Int32Array( n );
+		arrayCacheI32[ n ] = r;
+
+	}
+
+	for ( let i = 0; i !== n; ++ i ) {
+
+		r[ i ] = textures.allocateTextureUnit();
+
+	}
+
+	return r;
+
+}
+
+// --- Setters ---
+
+// Note: Defining these methods externally, because they come in a bunch
+// and this way their names minify.
+
+// Single scalar
+
+function setValueV1f( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( cache[ 0 ] === v ) return;
+
+	gl.uniform1f( this.addr, v );
+
+	cache[ 0 ] = v;
+
+}
+
+// Single float vector (from flat array or THREE.VectorN)
+
+function setValueV2f( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( v.x !== undefined ) {
+
+		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {
+
+			gl.uniform2f( this.addr, v.x, v.y );
+
+			cache[ 0 ] = v.x;
+			cache[ 1 ] = v.y;
+
+		}
+
+	} else {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniform2fv( this.addr, v );
+
+		copyArray( cache, v );
+
+	}
+
+}
+
+function setValueV3f( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( v.x !== undefined ) {
+
+		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {
+
+			gl.uniform3f( this.addr, v.x, v.y, v.z );
+
+			cache[ 0 ] = v.x;
+			cache[ 1 ] = v.y;
+			cache[ 2 ] = v.z;
+
+		}
+
+	} else if ( v.r !== undefined ) {
+
+		if ( cache[ 0 ] !== v.r || cache[ 1 ] !== v.g || cache[ 2 ] !== v.b ) {
+
+			gl.uniform3f( this.addr, v.r, v.g, v.b );
+
+			cache[ 0 ] = v.r;
+			cache[ 1 ] = v.g;
+			cache[ 2 ] = v.b;
+
+		}
+
+	} else {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniform3fv( this.addr, v );
+
+		copyArray( cache, v );
+
+	}
+
+}
+
+function setValueV4f( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( v.x !== undefined ) {
+
+		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {
+
+			gl.uniform4f( this.addr, v.x, v.y, v.z, v.w );
+
+			cache[ 0 ] = v.x;
+			cache[ 1 ] = v.y;
+			cache[ 2 ] = v.z;
+			cache[ 3 ] = v.w;
+
+		}
+
+	} else {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniform4fv( this.addr, v );
+
+		copyArray( cache, v );
+
+	}
+
+}
+
+// Single matrix (from flat array or THREE.MatrixN)
+
+function setValueM2( gl, v ) {
+
+	const cache = this.cache;
+	const elements = v.elements;
+
+	if ( elements === undefined ) {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniformMatrix2fv( this.addr, false, v );
+
+		copyArray( cache, v );
+
+	} else {
+
+		if ( arraysEqual( cache, elements ) ) return;
+
+		mat2array.set( elements );
+
+		gl.uniformMatrix2fv( this.addr, false, mat2array );
+
+		copyArray( cache, elements );
+
+	}
+
+}
+
+function setValueM3( gl, v ) {
+
+	const cache = this.cache;
+	const elements = v.elements;
+
+	if ( elements === undefined ) {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniformMatrix3fv( this.addr, false, v );
+
+		copyArray( cache, v );
+
+	} else {
+
+		if ( arraysEqual( cache, elements ) ) return;
+
+		mat3array.set( elements );
+
+		gl.uniformMatrix3fv( this.addr, false, mat3array );
+
+		copyArray( cache, elements );
+
+	}
+
+}
+
+function setValueM4( gl, v ) {
+
+	const cache = this.cache;
+	const elements = v.elements;
+
+	if ( elements === undefined ) {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniformMatrix4fv( this.addr, false, v );
+
+		copyArray( cache, v );
+
+	} else {
+
+		if ( arraysEqual( cache, elements ) ) return;
+
+		mat4array.set( elements );
+
+		gl.uniformMatrix4fv( this.addr, false, mat4array );
+
+		copyArray( cache, elements );
+
+	}
+
+}
+
+// Single integer / boolean
+
+function setValueV1i( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( cache[ 0 ] === v ) return;
+
+	gl.uniform1i( this.addr, v );
+
+	cache[ 0 ] = v;
+
+}
+
+// Single integer / boolean vector (from flat array or THREE.VectorN)
+
+function setValueV2i( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( v.x !== undefined ) {
+
+		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {
+
+			gl.uniform2i( this.addr, v.x, v.y );
+
+			cache[ 0 ] = v.x;
+			cache[ 1 ] = v.y;
+
+		}
+
+	} else {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniform2iv( this.addr, v );
+
+		copyArray( cache, v );
+
+	}
+
+}
+
+function setValueV3i( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( v.x !== undefined ) {
+
+		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {
+
+			gl.uniform3i( this.addr, v.x, v.y, v.z );
+
+			cache[ 0 ] = v.x;
+			cache[ 1 ] = v.y;
+			cache[ 2 ] = v.z;
+
+		}
+
+	} else {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniform3iv( this.addr, v );
+
+		copyArray( cache, v );
+
+	}
+
+}
+
+function setValueV4i( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( v.x !== undefined ) {
+
+		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {
+
+			gl.uniform4i( this.addr, v.x, v.y, v.z, v.w );
+
+			cache[ 0 ] = v.x;
+			cache[ 1 ] = v.y;
+			cache[ 2 ] = v.z;
+			cache[ 3 ] = v.w;
+
+		}
+
+	} else {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniform4iv( this.addr, v );
+
+		copyArray( cache, v );
+
+	}
+
+}
+
+// Single unsigned integer
+
+function setValueV1ui( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( cache[ 0 ] === v ) return;
+
+	gl.uniform1ui( this.addr, v );
+
+	cache[ 0 ] = v;
+
+}
+
+// Single unsigned integer vector (from flat array or THREE.VectorN)
+
+function setValueV2ui( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( v.x !== undefined ) {
+
+		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y ) {
+
+			gl.uniform2ui( this.addr, v.x, v.y );
+
+			cache[ 0 ] = v.x;
+			cache[ 1 ] = v.y;
+
+		}
+
+	} else {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniform2uiv( this.addr, v );
+
+		copyArray( cache, v );
+
+	}
+
+}
+
+function setValueV3ui( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( v.x !== undefined ) {
+
+		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z ) {
+
+			gl.uniform3ui( this.addr, v.x, v.y, v.z );
+
+			cache[ 0 ] = v.x;
+			cache[ 1 ] = v.y;
+			cache[ 2 ] = v.z;
+
+		}
+
+	} else {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniform3uiv( this.addr, v );
+
+		copyArray( cache, v );
+
+	}
+
+}
+
+function setValueV4ui( gl, v ) {
+
+	const cache = this.cache;
+
+	if ( v.x !== undefined ) {
+
+		if ( cache[ 0 ] !== v.x || cache[ 1 ] !== v.y || cache[ 2 ] !== v.z || cache[ 3 ] !== v.w ) {
+
+			gl.uniform4ui( this.addr, v.x, v.y, v.z, v.w );
+
+			cache[ 0 ] = v.x;
+			cache[ 1 ] = v.y;
+			cache[ 2 ] = v.z;
+			cache[ 3 ] = v.w;
+
+		}
+
+	} else {
+
+		if ( arraysEqual( cache, v ) ) return;
+
+		gl.uniform4uiv( this.addr, v );
+
+		copyArray( cache, v );
+
+	}
+
+}
+
+
+// Single texture (2D / Cube)
+
+function setValueT1( gl, v, textures ) {
+
+	const cache = this.cache;
+	const unit = textures.allocateTextureUnit();
+
+	if ( cache[ 0 ] !== unit ) {
+
+		gl.uniform1i( this.addr, unit );
+		cache[ 0 ] = unit;
+
+	}
+
+	let emptyTexture2D;
+
+	if ( this.type === gl.SAMPLER_2D_SHADOW ) {
+
+		emptyShadowTexture.compareFunction = LessEqualCompare; // #28670
+		emptyTexture2D = emptyShadowTexture;
+
+	} else {
+
+		emptyTexture2D = emptyTexture;
+
+	}
+
+	textures.setTexture2D( v || emptyTexture2D, unit );
+
+}
+
+function setValueT3D1( gl, v, textures ) {
+
+	const cache = this.cache;
+	const unit = textures.allocateTextureUnit();
+
+	if ( cache[ 0 ] !== unit ) {
+
+		gl.uniform1i( this.addr, unit );
+		cache[ 0 ] = unit;
+
+	}
+
+	textures.setTexture3D( v || empty3dTexture, unit );
+
+}
+
+function setValueT6( gl, v, textures ) {
+
+	const cache = this.cache;
+	const unit = textures.allocateTextureUnit();
+
+	if ( cache[ 0 ] !== unit ) {
+
+		gl.uniform1i( this.addr, unit );
+		cache[ 0 ] = unit;
+
+	}
+
+	textures.setTextureCube( v || emptyCubeTexture, unit );
+
+}
+
+function setValueT2DArray1( gl, v, textures ) {
+
+	const cache = this.cache;
+	const unit = textures.allocateTextureUnit();
+
+	if ( cache[ 0 ] !== unit ) {
+
+		gl.uniform1i( this.addr, unit );
+		cache[ 0 ] = unit;
+
+	}
+
+	textures.setTexture2DArray( v || emptyArrayTexture, unit );
+
+}
+
+// Helper to pick the right setter for the singular case
+
+function getSingularSetter( type ) {
+
+	switch ( type ) {
+
+		case 0x1406: return setValueV1f; // FLOAT
+		case 0x8b50: return setValueV2f; // _VEC2
+		case 0x8b51: return setValueV3f; // _VEC3
+		case 0x8b52: return setValueV4f; // _VEC4
+
+		case 0x8b5a: return setValueM2; // _MAT2
+		case 0x8b5b: return setValueM3; // _MAT3
+		case 0x8b5c: return setValueM4; // _MAT4
+
+		case 0x1404: case 0x8b56: return setValueV1i; // INT, BOOL
+		case 0x8b53: case 0x8b57: return setValueV2i; // _VEC2
+		case 0x8b54: case 0x8b58: return setValueV3i; // _VEC3
+		case 0x8b55: case 0x8b59: return setValueV4i; // _VEC4
+
+		case 0x1405: return setValueV1ui; // UINT
+		case 0x8dc6: return setValueV2ui; // _VEC2
+		case 0x8dc7: return setValueV3ui; // _VEC3
+		case 0x8dc8: return setValueV4ui; // _VEC4
+
+		case 0x8b5e: // SAMPLER_2D
+		case 0x8d66: // SAMPLER_EXTERNAL_OES
+		case 0x8dca: // INT_SAMPLER_2D
+		case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
+		case 0x8b62: // SAMPLER_2D_SHADOW
+			return setValueT1;
+
+		case 0x8b5f: // SAMPLER_3D
+		case 0x8dcb: // INT_SAMPLER_3D
+		case 0x8dd3: // UNSIGNED_INT_SAMPLER_3D
+			return setValueT3D1;
+
+		case 0x8b60: // SAMPLER_CUBE
+		case 0x8dcc: // INT_SAMPLER_CUBE
+		case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
+		case 0x8dc5: // SAMPLER_CUBE_SHADOW
+			return setValueT6;
+
+		case 0x8dc1: // SAMPLER_2D_ARRAY
+		case 0x8dcf: // INT_SAMPLER_2D_ARRAY
+		case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY
+		case 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW
+			return setValueT2DArray1;
+
+	}
+
+}
+
+
+// Array of scalars
+
+function setValueV1fArray( gl, v ) {
+
+	gl.uniform1fv( this.addr, v );
+
+}
+
+// Array of vectors (from flat array or array of THREE.VectorN)
+
+function setValueV2fArray( gl, v ) {
+
+	const data = flatten( v, this.size, 2 );
+
+	gl.uniform2fv( this.addr, data );
+
+}
+
+function setValueV3fArray( gl, v ) {
+
+	const data = flatten( v, this.size, 3 );
+
+	gl.uniform3fv( this.addr, data );
+
+}
+
+function setValueV4fArray( gl, v ) {
+
+	const data = flatten( v, this.size, 4 );
+
+	gl.uniform4fv( this.addr, data );
+
+}
+
+// Array of matrices (from flat array or array of THREE.MatrixN)
+
+function setValueM2Array( gl, v ) {
+
+	const data = flatten( v, this.size, 4 );
+
+	gl.uniformMatrix2fv( this.addr, false, data );
+
+}
+
+function setValueM3Array( gl, v ) {
+
+	const data = flatten( v, this.size, 9 );
+
+	gl.uniformMatrix3fv( this.addr, false, data );
+
+}
+
+function setValueM4Array( gl, v ) {
+
+	const data = flatten( v, this.size, 16 );
+
+	gl.uniformMatrix4fv( this.addr, false, data );
+
+}
+
+// Array of integer / boolean
+
+function setValueV1iArray( gl, v ) {
+
+	gl.uniform1iv( this.addr, v );
+
+}
+
+// Array of integer / boolean vectors (from flat array)
+
+function setValueV2iArray( gl, v ) {
+
+	gl.uniform2iv( this.addr, v );
+
+}
+
+function setValueV3iArray( gl, v ) {
+
+	gl.uniform3iv( this.addr, v );
+
+}
+
+function setValueV4iArray( gl, v ) {
+
+	gl.uniform4iv( this.addr, v );
+
+}
+
+// Array of unsigned integer
+
+function setValueV1uiArray( gl, v ) {
+
+	gl.uniform1uiv( this.addr, v );
+
+}
+
+// Array of unsigned integer vectors (from flat array)
+
+function setValueV2uiArray( gl, v ) {
+
+	gl.uniform2uiv( this.addr, v );
+
+}
+
+function setValueV3uiArray( gl, v ) {
+
+	gl.uniform3uiv( this.addr, v );
+
+}
+
+function setValueV4uiArray( gl, v ) {
+
+	gl.uniform4uiv( this.addr, v );
+
+}
+
+
+// Array of textures (2D / 3D / Cube / 2DArray)
+
+function setValueT1Array( gl, v, textures ) {
+
+	const cache = this.cache;
+
+	const n = v.length;
+
+	const units = allocTexUnits( textures, n );
+
+	if ( ! arraysEqual( cache, units ) ) {
+
+		gl.uniform1iv( this.addr, units );
+
+		copyArray( cache, units );
+
+	}
+
+	for ( let i = 0; i !== n; ++ i ) {
+
+		textures.setTexture2D( v[ i ] || emptyTexture, units[ i ] );
+
+	}
+
+}
+
+function setValueT3DArray( gl, v, textures ) {
+
+	const cache = this.cache;
+
+	const n = v.length;
+
+	const units = allocTexUnits( textures, n );
+
+	if ( ! arraysEqual( cache, units ) ) {
+
+		gl.uniform1iv( this.addr, units );
+
+		copyArray( cache, units );
+
+	}
+
+	for ( let i = 0; i !== n; ++ i ) {
+
+		textures.setTexture3D( v[ i ] || empty3dTexture, units[ i ] );
+
+	}
+
+}
+
+function setValueT6Array( gl, v, textures ) {
+
+	const cache = this.cache;
+
+	const n = v.length;
+
+	const units = allocTexUnits( textures, n );
+
+	if ( ! arraysEqual( cache, units ) ) {
+
+		gl.uniform1iv( this.addr, units );
+
+		copyArray( cache, units );
+
+	}
+
+	for ( let i = 0; i !== n; ++ i ) {
+
+		textures.setTextureCube( v[ i ] || emptyCubeTexture, units[ i ] );
+
+	}
+
+}
+
+function setValueT2DArrayArray( gl, v, textures ) {
+
+	const cache = this.cache;
+
+	const n = v.length;
+
+	const units = allocTexUnits( textures, n );
+
+	if ( ! arraysEqual( cache, units ) ) {
+
+		gl.uniform1iv( this.addr, units );
+
+		copyArray( cache, units );
+
+	}
+
+	for ( let i = 0; i !== n; ++ i ) {
+
+		textures.setTexture2DArray( v[ i ] || emptyArrayTexture, units[ i ] );
+
+	}
+
+}
+
+
+// Helper to pick the right setter for a pure (bottom-level) array
+
+function getPureArraySetter( type ) {
+
+	switch ( type ) {
+
+		case 0x1406: return setValueV1fArray; // FLOAT
+		case 0x8b50: return setValueV2fArray; // _VEC2
+		case 0x8b51: return setValueV3fArray; // _VEC3
+		case 0x8b52: return setValueV4fArray; // _VEC4
+
+		case 0x8b5a: return setValueM2Array; // _MAT2
+		case 0x8b5b: return setValueM3Array; // _MAT3
+		case 0x8b5c: return setValueM4Array; // _MAT4
+
+		case 0x1404: case 0x8b56: return setValueV1iArray; // INT, BOOL
+		case 0x8b53: case 0x8b57: return setValueV2iArray; // _VEC2
+		case 0x8b54: case 0x8b58: return setValueV3iArray; // _VEC3
+		case 0x8b55: case 0x8b59: return setValueV4iArray; // _VEC4
+
+		case 0x1405: return setValueV1uiArray; // UINT
+		case 0x8dc6: return setValueV2uiArray; // _VEC2
+		case 0x8dc7: return setValueV3uiArray; // _VEC3
+		case 0x8dc8: return setValueV4uiArray; // _VEC4
+
+		case 0x8b5e: // SAMPLER_2D
+		case 0x8d66: // SAMPLER_EXTERNAL_OES
+		case 0x8dca: // INT_SAMPLER_2D
+		case 0x8dd2: // UNSIGNED_INT_SAMPLER_2D
+		case 0x8b62: // SAMPLER_2D_SHADOW
+			return setValueT1Array;
+
+		case 0x8b5f: // SAMPLER_3D
+		case 0x8dcb: // INT_SAMPLER_3D
+		case 0x8dd3: // UNSIGNED_INT_SAMPLER_3D
+			return setValueT3DArray;
+
+		case 0x8b60: // SAMPLER_CUBE
+		case 0x8dcc: // INT_SAMPLER_CUBE
+		case 0x8dd4: // UNSIGNED_INT_SAMPLER_CUBE
+		case 0x8dc5: // SAMPLER_CUBE_SHADOW
+			return setValueT6Array;
+
+		case 0x8dc1: // SAMPLER_2D_ARRAY
+		case 0x8dcf: // INT_SAMPLER_2D_ARRAY
+		case 0x8dd7: // UNSIGNED_INT_SAMPLER_2D_ARRAY
+		case 0x8dc4: // SAMPLER_2D_ARRAY_SHADOW
+			return setValueT2DArrayArray;
+
+	}
+
+}
+
+// --- Uniform Classes ---
+
+class SingleUniform {
+
+	constructor( id, activeInfo, addr ) {
+
+		this.id = id;
+		this.addr = addr;
+		this.cache = [];
+		this.type = activeInfo.type;
+		this.setValue = getSingularSetter( activeInfo.type );
+
+		// this.path = activeInfo.name; // DEBUG
+
+	}
+
+}
+
+class PureArrayUniform {
+
+	constructor( id, activeInfo, addr ) {
+
+		this.id = id;
+		this.addr = addr;
+		this.cache = [];
+		this.type = activeInfo.type;
+		this.size = activeInfo.size;
+		this.setValue = getPureArraySetter( activeInfo.type );
+
+		// this.path = activeInfo.name; // DEBUG
+
+	}
+
+}
+
+class StructuredUniform {
+
+	constructor( id ) {
+
+		this.id = id;
+
+		this.seq = [];
+		this.map = {};
+
+	}
+
+	setValue( gl, value, textures ) {
+
+		const seq = this.seq;
+
+		for ( let i = 0, n = seq.length; i !== n; ++ i ) {
+
+			const u = seq[ i ];
+			u.setValue( gl, value[ u.id ], textures );
+
+		}
+
+	}
+
+}
+
+// --- Top-level ---
+
+// Parser - builds up the property tree from the path strings
+
+const RePathPart = /(\w+)(\])?(\[|\.)?/g;
+
+// extracts
+// 	- the identifier (member name or array index)
+//  - followed by an optional right bracket (found when array index)
+//  - followed by an optional left bracket or dot (type of subscript)
+//
+// Note: These portions can be read in a non-overlapping fashion and
+// allow straightforward parsing of the hierarchy that WebGL encodes
+// in the uniform names.
+
+function addUniform( container, uniformObject ) {
+
+	container.seq.push( uniformObject );
+	container.map[ uniformObject.id ] = uniformObject;
+
+}
+
+function parseUniform( activeInfo, addr, container ) {
+
+	const path = activeInfo.name,
+		pathLength = path.length;
+
+	// reset RegExp object, because of the early exit of a previous run
+	RePathPart.lastIndex = 0;
+
+	while ( true ) {
+
+		const match = RePathPart.exec( path ),
+			matchEnd = RePathPart.lastIndex;
+
+		let id = match[ 1 ];
+		const idIsIndex = match[ 2 ] === ']',
+			subscript = match[ 3 ];
+
+		if ( idIsIndex ) id = id | 0; // convert to integer
+
+		if ( subscript === undefined || subscript === '[' && matchEnd + 2 === pathLength ) {
+
+			// bare name or "pure" bottom-level array "[0]" suffix
+
+			addUniform( container, subscript === undefined ?
+				new SingleUniform( id, activeInfo, addr ) :
+				new PureArrayUniform( id, activeInfo, addr ) );
+
+			break;
+
+		} else {
+
+			// step into inner node / create it in case it doesn't exist
+
+			const map = container.map;
+			let next = map[ id ];
+
+			if ( next === undefined ) {
+
+				next = new StructuredUniform( id );
+				addUniform( container, next );
+
+			}
+
+			container = next;
+
+		}
+
+	}
+
+}
+
+// Root Container
+
+class WebGLUniforms {
+
+	constructor( gl, program ) {
+
+		this.seq = [];
+		this.map = {};
+
+		const n = gl.getProgramParameter( program, gl.ACTIVE_UNIFORMS );
+
+		for ( let i = 0; i < n; ++ i ) {
+
+			const info = gl.getActiveUniform( program, i ),
+				addr = gl.getUniformLocation( program, info.name );
+
+			parseUniform( info, addr, this );
+
+		}
+
+	}
+
+	setValue( gl, name, value, textures ) {
+
+		const u = this.map[ name ];
+
+		if ( u !== undefined ) u.setValue( gl, value, textures );
+
+	}
+
+	setOptional( gl, object, name ) {
+
+		const v = object[ name ];
+
+		if ( v !== undefined ) this.setValue( gl, name, v );
+
+	}
+
+	static upload( gl, seq, values, textures ) {
+
+		for ( let i = 0, n = seq.length; i !== n; ++ i ) {
+
+			const u = seq[ i ],
+				v = values[ u.id ];
+
+			if ( v.needsUpdate !== false ) {
+
+				// note: always updating when .needsUpdate is undefined
+				u.setValue( gl, v.value, textures );
+
+			}
+
+		}
+
+	}
+
+	static seqWithValue( seq, values ) {
+
+		const r = [];
+
+		for ( let i = 0, n = seq.length; i !== n; ++ i ) {
+
+			const u = seq[ i ];
+			if ( u.id in values ) r.push( u );
+
+		}
+
+		return r;
+
+	}
+
+}
+
+function WebGLShader( gl, type, string ) {
+
+	const shader = gl.createShader( type );
+
+	gl.shaderSource( shader, string );
+	gl.compileShader( shader );
+
+	return shader;
+
+}
+
+// From https://www.khronos.org/registry/webgl/extensions/KHR_parallel_shader_compile/
+const COMPLETION_STATUS_KHR = 0x91B1;
+
+let programIdCount = 0;
+
+function handleSource( string, errorLine ) {
+
+	const lines = string.split( '\n' );
+	const lines2 = [];
+
+	const from = Math.max( errorLine - 6, 0 );
+	const to = Math.min( errorLine + 6, lines.length );
+
+	for ( let i = from; i < to; i ++ ) {
+
+		const line = i + 1;
+		lines2.push( `${line === errorLine ? '>' : ' '} ${line}: ${lines[ i ]}` );
+
+	}
+
+	return lines2.join( '\n' );
+
+}
+
+function getEncodingComponents( colorSpace ) {
+
+	const workingPrimaries = ColorManagement.getPrimaries( ColorManagement.workingColorSpace );
+	const encodingPrimaries = ColorManagement.getPrimaries( colorSpace );
+
+	let gamutMapping;
+
+	if ( workingPrimaries === encodingPrimaries ) {
+
+		gamutMapping = '';
+
+	} else if ( workingPrimaries === P3Primaries && encodingPrimaries === Rec709Primaries ) {
+
+		gamutMapping = 'LinearDisplayP3ToLinearSRGB';
+
+	} else if ( workingPrimaries === Rec709Primaries && encodingPrimaries === P3Primaries ) {
+
+		gamutMapping = 'LinearSRGBToLinearDisplayP3';
+
+	}
+
+	switch ( colorSpace ) {
+
+		case LinearSRGBColorSpace:
+		case LinearDisplayP3ColorSpace:
+			return [ gamutMapping, 'LinearTransferOETF' ];
+
+		case SRGBColorSpace:
+		case DisplayP3ColorSpace:
+			return [ gamutMapping, 'sRGBTransferOETF' ];
+
+		default:
+			console.warn( 'THREE.WebGLProgram: Unsupported color space:', colorSpace );
+			return [ gamutMapping, 'LinearTransferOETF' ];
+
+	}
+
+}
+
+function getShaderErrors( gl, shader, type ) {
+
+	const status = gl.getShaderParameter( shader, gl.COMPILE_STATUS );
+	const errors = gl.getShaderInfoLog( shader ).trim();
+
+	if ( status && errors === '' ) return '';
+
+	const errorMatches = /ERROR: 0:(\d+)/.exec( errors );
+	if ( errorMatches ) {
+
+		// --enable-privileged-webgl-extension
+		// console.log( '**' + type + '**', gl.getExtension( 'WEBGL_debug_shaders' ).getTranslatedShaderSource( shader ) );
+
+		const errorLine = parseInt( errorMatches[ 1 ] );
+		return type.toUpperCase() + '\n\n' + errors + '\n\n' + handleSource( gl.getShaderSource( shader ), errorLine );
+
+	} else {
+
+		return errors;
+
+	}
+
+}
+
+function getTexelEncodingFunction( functionName, colorSpace ) {
+
+	const components = getEncodingComponents( colorSpace );
+	return `vec4 ${functionName}( vec4 value ) { return ${components[ 0 ]}( ${components[ 1 ]}( value ) ); }`;
+
+}
+
+function getToneMappingFunction( functionName, toneMapping ) {
+
+	let toneMappingName;
+
+	switch ( toneMapping ) {
+
+		case LinearToneMapping:
+			toneMappingName = 'Linear';
+			break;
+
+		case ReinhardToneMapping:
+			toneMappingName = 'Reinhard';
+			break;
+
+		case CineonToneMapping:
+			toneMappingName = 'Cineon';
+			break;
+
+		case ACESFilmicToneMapping:
+			toneMappingName = 'ACESFilmic';
+			break;
+
+		case AgXToneMapping:
+			toneMappingName = 'AgX';
+			break;
+
+		case NeutralToneMapping:
+			toneMappingName = 'Neutral';
+			break;
+
+		case CustomToneMapping:
+			toneMappingName = 'Custom';
+			break;
+
+		default:
+			console.warn( 'THREE.WebGLProgram: Unsupported toneMapping:', toneMapping );
+			toneMappingName = 'Linear';
+
+	}
+
+	return 'vec3 ' + functionName + '( vec3 color ) { return ' + toneMappingName + 'ToneMapping( color ); }';
+
+}
+
+const _v0$1 = /*@__PURE__*/ new Vector3();
+
+function getLuminanceFunction() {
+
+	ColorManagement.getLuminanceCoefficients( _v0$1 );
+
+	const r = _v0$1.x.toFixed( 4 );
+	const g = _v0$1.y.toFixed( 4 );
+	const b = _v0$1.z.toFixed( 4 );
+
+	return [
+
+		'float luminance( const in vec3 rgb ) {',
+
+		`	const vec3 weights = vec3( ${ r }, ${ g }, ${ b } );`,
+
+		'	return dot( weights, rgb );',
+
+		'}'
+
+	].join( '\n' );
+
+}
+
+function generateVertexExtensions( parameters ) {
+
+	const chunks = [
+		parameters.extensionClipCullDistance ? '#extension GL_ANGLE_clip_cull_distance : require' : '',
+		parameters.extensionMultiDraw ? '#extension GL_ANGLE_multi_draw : require' : '',
+	];
+
+	return chunks.filter( filterEmptyLine ).join( '\n' );
+
+}
+
+function generateDefines( defines ) {
+
+	const chunks = [];
+
+	for ( const name in defines ) {
+
+		const value = defines[ name ];
+
+		if ( value === false ) continue;
+
+		chunks.push( '#define ' + name + ' ' + value );
+
+	}
+
+	return chunks.join( '\n' );
+
+}
+
+function fetchAttributeLocations( gl, program ) {
+
+	const attributes = {};
+
+	const n = gl.getProgramParameter( program, gl.ACTIVE_ATTRIBUTES );
+
+	for ( let i = 0; i < n; i ++ ) {
+
+		const info = gl.getActiveAttrib( program, i );
+		const name = info.name;
+
+		let locationSize = 1;
+		if ( info.type === gl.FLOAT_MAT2 ) locationSize = 2;
+		if ( info.type === gl.FLOAT_MAT3 ) locationSize = 3;
+		if ( info.type === gl.FLOAT_MAT4 ) locationSize = 4;
+
+		// console.log( 'THREE.WebGLProgram: ACTIVE VERTEX ATTRIBUTE:', name, i );
+
+		attributes[ name ] = {
+			type: info.type,
+			location: gl.getAttribLocation( program, name ),
+			locationSize: locationSize
+		};
+
+	}
+
+	return attributes;
+
+}
+
+function filterEmptyLine( string ) {
+
+	return string !== '';
+
+}
+
+function replaceLightNums( string, parameters ) {
+
+	const numSpotLightCoords = parameters.numSpotLightShadows + parameters.numSpotLightMaps - parameters.numSpotLightShadowsWithMaps;
+
+	return string
+		.replace( /NUM_DIR_LIGHTS/g, parameters.numDirLights )
+		.replace( /NUM_SPOT_LIGHTS/g, parameters.numSpotLights )
+		.replace( /NUM_SPOT_LIGHT_MAPS/g, parameters.numSpotLightMaps )
+		.replace( /NUM_SPOT_LIGHT_COORDS/g, numSpotLightCoords )
+		.replace( /NUM_RECT_AREA_LIGHTS/g, parameters.numRectAreaLights )
+		.replace( /NUM_POINT_LIGHTS/g, parameters.numPointLights )
+		.replace( /NUM_HEMI_LIGHTS/g, parameters.numHemiLights )
+		.replace( /NUM_DIR_LIGHT_SHADOWS/g, parameters.numDirLightShadows )
+		.replace( /NUM_SPOT_LIGHT_SHADOWS_WITH_MAPS/g, parameters.numSpotLightShadowsWithMaps )
+		.replace( /NUM_SPOT_LIGHT_SHADOWS/g, parameters.numSpotLightShadows )
+		.replace( /NUM_POINT_LIGHT_SHADOWS/g, parameters.numPointLightShadows );
+
+}
+
+function replaceClippingPlaneNums( string, parameters ) {
+
+	return string
+		.replace( /NUM_CLIPPING_PLANES/g, parameters.numClippingPlanes )
+		.replace( /UNION_CLIPPING_PLANES/g, ( parameters.numClippingPlanes - parameters.numClipIntersection ) );
+
+}
+
+// Resolve Includes
+
+const includePattern = /^[ \t]*#include +<([\w\d./]+)>/gm;
+
+function resolveIncludes( string ) {
+
+	return string.replace( includePattern, includeReplacer );
+
+}
+
+const shaderChunkMap = new Map();
+
+function includeReplacer( match, include ) {
+
+	let string = ShaderChunk[ include ];
+
+	if ( string === undefined ) {
+
+		const newInclude = shaderChunkMap.get( include );
+
+		if ( newInclude !== undefined ) {
+
+			string = ShaderChunk[ newInclude ];
+			console.warn( 'THREE.WebGLRenderer: Shader chunk "%s" has been deprecated. Use "%s" instead.', include, newInclude );
+
+		} else {
+
+			throw new Error( 'Can not resolve #include <' + include + '>' );
+
+		}
+
+	}
+
+	return resolveIncludes( string );
+
+}
+
+// Unroll Loops
+
+const unrollLoopPattern = /#pragma unroll_loop_start\s+for\s*\(\s*int\s+i\s*=\s*(\d+)\s*;\s*i\s*<\s*(\d+)\s*;\s*i\s*\+\+\s*\)\s*{([\s\S]+?)}\s+#pragma unroll_loop_end/g;
+
+function unrollLoops( string ) {
+
+	return string.replace( unrollLoopPattern, loopReplacer );
+
+}
+
+function loopReplacer( match, start, end, snippet ) {
+
+	let string = '';
+
+	for ( let i = parseInt( start ); i < parseInt( end ); i ++ ) {
+
+		string += snippet
+			.replace( /\[\s*i\s*\]/g, '[ ' + i + ' ]' )
+			.replace( /UNROLLED_LOOP_INDEX/g, i );
+
+	}
+
+	return string;
+
+}
+
+//
+
+function generatePrecision( parameters ) {
+
+	let precisionstring = `precision ${parameters.precision} float;
+	precision ${parameters.precision} int;
+	precision ${parameters.precision} sampler2D;
+	precision ${parameters.precision} samplerCube;
+	precision ${parameters.precision} sampler3D;
+	precision ${parameters.precision} sampler2DArray;
+	precision ${parameters.precision} sampler2DShadow;
+	precision ${parameters.precision} samplerCubeShadow;
+	precision ${parameters.precision} sampler2DArrayShadow;
+	precision ${parameters.precision} isampler2D;
+	precision ${parameters.precision} isampler3D;
+	precision ${parameters.precision} isamplerCube;
+	precision ${parameters.precision} isampler2DArray;
+	precision ${parameters.precision} usampler2D;
+	precision ${parameters.precision} usampler3D;
+	precision ${parameters.precision} usamplerCube;
+	precision ${parameters.precision} usampler2DArray;
+	`;
+
+	if ( parameters.precision === 'highp' ) {
+
+		precisionstring += '\n#define HIGH_PRECISION';
+
+	} else if ( parameters.precision === 'mediump' ) {
+
+		precisionstring += '\n#define MEDIUM_PRECISION';
+
+	} else if ( parameters.precision === 'lowp' ) {
+
+		precisionstring += '\n#define LOW_PRECISION';
+
+	}
+
+	return precisionstring;
+
+}
+
+function generateShadowMapTypeDefine( parameters ) {
+
+	let shadowMapTypeDefine = 'SHADOWMAP_TYPE_BASIC';
+
+	if ( parameters.shadowMapType === PCFShadowMap ) {
+
+		shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF';
+
+	} else if ( parameters.shadowMapType === PCFSoftShadowMap ) {
+
+		shadowMapTypeDefine = 'SHADOWMAP_TYPE_PCF_SOFT';
+
+	} else if ( parameters.shadowMapType === VSMShadowMap ) {
+
+		shadowMapTypeDefine = 'SHADOWMAP_TYPE_VSM';
+
+	}
+
+	return shadowMapTypeDefine;
+
+}
+
+function generateEnvMapTypeDefine( parameters ) {
+
+	let envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
+
+	if ( parameters.envMap ) {
+
+		switch ( parameters.envMapMode ) {
+
+			case CubeReflectionMapping:
+			case CubeRefractionMapping:
+				envMapTypeDefine = 'ENVMAP_TYPE_CUBE';
+				break;
+
+			case CubeUVReflectionMapping:
+				envMapTypeDefine = 'ENVMAP_TYPE_CUBE_UV';
+				break;
+
+		}
+
+	}
+
+	return envMapTypeDefine;
+
+}
+
+function generateEnvMapModeDefine( parameters ) {
+
+	let envMapModeDefine = 'ENVMAP_MODE_REFLECTION';
+
+	if ( parameters.envMap ) {
+
+		switch ( parameters.envMapMode ) {
+
+			case CubeRefractionMapping:
+
+				envMapModeDefine = 'ENVMAP_MODE_REFRACTION';
+				break;
+
+		}
+
+	}
+
+	return envMapModeDefine;
+
+}
+
+function generateEnvMapBlendingDefine( parameters ) {
+
+	let envMapBlendingDefine = 'ENVMAP_BLENDING_NONE';
+
+	if ( parameters.envMap ) {
+
+		switch ( parameters.combine ) {
+
+			case MultiplyOperation:
+				envMapBlendingDefine = 'ENVMAP_BLENDING_MULTIPLY';
+				break;
+
+			case MixOperation:
+				envMapBlendingDefine = 'ENVMAP_BLENDING_MIX';
+				break;
+
+			case AddOperation:
+				envMapBlendingDefine = 'ENVMAP_BLENDING_ADD';
+				break;
+
+		}
+
+	}
+
+	return envMapBlendingDefine;
+
+}
+
+function generateCubeUVSize( parameters ) {
+
+	const imageHeight = parameters.envMapCubeUVHeight;
+
+	if ( imageHeight === null ) return null;
+
+	const maxMip = Math.log2( imageHeight ) - 2;
+
+	const texelHeight = 1.0 / imageHeight;
+
+	const texelWidth = 1.0 / ( 3 * Math.max( Math.pow( 2, maxMip ), 7 * 16 ) );
+
+	return { texelWidth, texelHeight, maxMip };
+
+}
+
+function WebGLProgram( renderer, cacheKey, parameters, bindingStates ) {
+
+	// TODO Send this event to Three.js DevTools
+	// console.log( 'WebGLProgram', cacheKey );
+
+	const gl = renderer.getContext();
+
+	const defines = parameters.defines;
+
+	let vertexShader = parameters.vertexShader;
+	let fragmentShader = parameters.fragmentShader;
+
+	const shadowMapTypeDefine = generateShadowMapTypeDefine( parameters );
+	const envMapTypeDefine = generateEnvMapTypeDefine( parameters );
+	const envMapModeDefine = generateEnvMapModeDefine( parameters );
+	const envMapBlendingDefine = generateEnvMapBlendingDefine( parameters );
+	const envMapCubeUVSize = generateCubeUVSize( parameters );
+
+	const customVertexExtensions = generateVertexExtensions( parameters );
+
+	const customDefines = generateDefines( defines );
+
+	const program = gl.createProgram();
+
+	let prefixVertex, prefixFragment;
+	let versionString = parameters.glslVersion ? '#version ' + parameters.glslVersion + '\n' : '';
+
+	if ( parameters.isRawShaderMaterial ) {
+
+		prefixVertex = [
+
+			'#define SHADER_TYPE ' + parameters.shaderType,
+			'#define SHADER_NAME ' + parameters.shaderName,
+
+			customDefines
+
+		].filter( filterEmptyLine ).join( '\n' );
+
+		if ( prefixVertex.length > 0 ) {
+
+			prefixVertex += '\n';
+
+		}
+
+		prefixFragment = [
+
+			'#define SHADER_TYPE ' + parameters.shaderType,
+			'#define SHADER_NAME ' + parameters.shaderName,
+
+			customDefines
+
+		].filter( filterEmptyLine ).join( '\n' );
+
+		if ( prefixFragment.length > 0 ) {
+
+			prefixFragment += '\n';
+
+		}
+
+	} else {
+
+		prefixVertex = [
+
+			generatePrecision( parameters ),
+
+			'#define SHADER_TYPE ' + parameters.shaderType,
+			'#define SHADER_NAME ' + parameters.shaderName,
+
+			customDefines,
+
+			parameters.extensionClipCullDistance ? '#define USE_CLIP_DISTANCE' : '',
+			parameters.batching ? '#define USE_BATCHING' : '',
+			parameters.batchingColor ? '#define USE_BATCHING_COLOR' : '',
+			parameters.instancing ? '#define USE_INSTANCING' : '',
+			parameters.instancingColor ? '#define USE_INSTANCING_COLOR' : '',
+			parameters.instancingMorph ? '#define USE_INSTANCING_MORPH' : '',
+
+			parameters.useFog && parameters.fog ? '#define USE_FOG' : '',
+			parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '',
+
+			parameters.map ? '#define USE_MAP' : '',
+			parameters.envMap ? '#define USE_ENVMAP' : '',
+			parameters.envMap ? '#define ' + envMapModeDefine : '',
+			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
+			parameters.aoMap ? '#define USE_AOMAP' : '',
+			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
+			parameters.normalMap ? '#define USE_NORMALMAP' : '',
+			parameters.normalMapObjectSpace ? '#define USE_NORMALMAP_OBJECTSPACE' : '',
+			parameters.normalMapTangentSpace ? '#define USE_NORMALMAP_TANGENTSPACE' : '',
+			parameters.displacementMap ? '#define USE_DISPLACEMENTMAP' : '',
+			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
+
+			parameters.anisotropy ? '#define USE_ANISOTROPY' : '',
+			parameters.anisotropyMap ? '#define USE_ANISOTROPYMAP' : '',
+
+			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
+			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
+			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',
+
+			parameters.iridescenceMap ? '#define USE_IRIDESCENCEMAP' : '',
+			parameters.iridescenceThicknessMap ? '#define USE_IRIDESCENCE_THICKNESSMAP' : '',
+
+			parameters.specularMap ? '#define USE_SPECULARMAP' : '',
+			parameters.specularColorMap ? '#define USE_SPECULAR_COLORMAP' : '',
+			parameters.specularIntensityMap ? '#define USE_SPECULAR_INTENSITYMAP' : '',
+
+			parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
+			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
+			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
+			parameters.alphaHash ? '#define USE_ALPHAHASH' : '',
+
+			parameters.transmission ? '#define USE_TRANSMISSION' : '',
+			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
+			parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',
+
+			parameters.sheenColorMap ? '#define USE_SHEEN_COLORMAP' : '',
+			parameters.sheenRoughnessMap ? '#define USE_SHEEN_ROUGHNESSMAP' : '',
+
+			//
+
+			parameters.mapUv ? '#define MAP_UV ' + parameters.mapUv : '',
+			parameters.alphaMapUv ? '#define ALPHAMAP_UV ' + parameters.alphaMapUv : '',
+			parameters.lightMapUv ? '#define LIGHTMAP_UV ' + parameters.lightMapUv : '',
+			parameters.aoMapUv ? '#define AOMAP_UV ' + parameters.aoMapUv : '',
+			parameters.emissiveMapUv ? '#define EMISSIVEMAP_UV ' + parameters.emissiveMapUv : '',
+			parameters.bumpMapUv ? '#define BUMPMAP_UV ' + parameters.bumpMapUv : '',
+			parameters.normalMapUv ? '#define NORMALMAP_UV ' + parameters.normalMapUv : '',
+			parameters.displacementMapUv ? '#define DISPLACEMENTMAP_UV ' + parameters.displacementMapUv : '',
+
+			parameters.metalnessMapUv ? '#define METALNESSMAP_UV ' + parameters.metalnessMapUv : '',
+			parameters.roughnessMapUv ? '#define ROUGHNESSMAP_UV ' + parameters.roughnessMapUv : '',
+
+			parameters.anisotropyMapUv ? '#define ANISOTROPYMAP_UV ' + parameters.anisotropyMapUv : '',
+
+			parameters.clearcoatMapUv ? '#define CLEARCOATMAP_UV ' + parameters.clearcoatMapUv : '',
+			parameters.clearcoatNormalMapUv ? '#define CLEARCOAT_NORMALMAP_UV ' + parameters.clearcoatNormalMapUv : '',
+			parameters.clearcoatRoughnessMapUv ? '#define CLEARCOAT_ROUGHNESSMAP_UV ' + parameters.clearcoatRoughnessMapUv : '',
+
+			parameters.iridescenceMapUv ? '#define IRIDESCENCEMAP_UV ' + parameters.iridescenceMapUv : '',
+			parameters.iridescenceThicknessMapUv ? '#define IRIDESCENCE_THICKNESSMAP_UV ' + parameters.iridescenceThicknessMapUv : '',
+
+			parameters.sheenColorMapUv ? '#define SHEEN_COLORMAP_UV ' + parameters.sheenColorMapUv : '',
+			parameters.sheenRoughnessMapUv ? '#define SHEEN_ROUGHNESSMAP_UV ' + parameters.sheenRoughnessMapUv : '',
+
+			parameters.specularMapUv ? '#define SPECULARMAP_UV ' + parameters.specularMapUv : '',
+			parameters.specularColorMapUv ? '#define SPECULAR_COLORMAP_UV ' + parameters.specularColorMapUv : '',
+			parameters.specularIntensityMapUv ? '#define SPECULAR_INTENSITYMAP_UV ' + parameters.specularIntensityMapUv : '',
+
+			parameters.transmissionMapUv ? '#define TRANSMISSIONMAP_UV ' + parameters.transmissionMapUv : '',
+			parameters.thicknessMapUv ? '#define THICKNESSMAP_UV ' + parameters.thicknessMapUv : '',
+
+			//
+
+			parameters.vertexTangents && parameters.flatShading === false ? '#define USE_TANGENT' : '',
+			parameters.vertexColors ? '#define USE_COLOR' : '',
+			parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',
+			parameters.vertexUv1s ? '#define USE_UV1' : '',
+			parameters.vertexUv2s ? '#define USE_UV2' : '',
+			parameters.vertexUv3s ? '#define USE_UV3' : '',
+
+			parameters.pointsUvs ? '#define USE_POINTS_UV' : '',
+
+			parameters.flatShading ? '#define FLAT_SHADED' : '',
+
+			parameters.skinning ? '#define USE_SKINNING' : '',
+
+			parameters.morphTargets ? '#define USE_MORPHTARGETS' : '',
+			parameters.morphNormals && parameters.flatShading === false ? '#define USE_MORPHNORMALS' : '',
+			( parameters.morphColors ) ? '#define USE_MORPHCOLORS' : '',
+			( parameters.morphTargetsCount > 0 ) ? '#define MORPHTARGETS_TEXTURE_STRIDE ' + parameters.morphTextureStride : '',
+			( parameters.morphTargetsCount > 0 ) ? '#define MORPHTARGETS_COUNT ' + parameters.morphTargetsCount : '',
+			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
+			parameters.flipSided ? '#define FLIP_SIDED' : '',
+
+			parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
+			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',
+
+			parameters.sizeAttenuation ? '#define USE_SIZEATTENUATION' : '',
+
+			parameters.numLightProbes > 0 ? '#define USE_LIGHT_PROBES' : '',
+
+			parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
+
+			'uniform mat4 modelMatrix;',
+			'uniform mat4 modelViewMatrix;',
+			'uniform mat4 projectionMatrix;',
+			'uniform mat4 viewMatrix;',
+			'uniform mat3 normalMatrix;',
+			'uniform vec3 cameraPosition;',
+			'uniform bool isOrthographic;',
+
+			'#ifdef USE_INSTANCING',
+
+			'	attribute mat4 instanceMatrix;',
+
+			'#endif',
+
+			'#ifdef USE_INSTANCING_COLOR',
+
+			'	attribute vec3 instanceColor;',
+
+			'#endif',
+
+			'#ifdef USE_INSTANCING_MORPH',
+
+			'	uniform sampler2D morphTexture;',
+
+			'#endif',
+
+			'attribute vec3 position;',
+			'attribute vec3 normal;',
+			'attribute vec2 uv;',
+
+			'#ifdef USE_UV1',
+
+			'	attribute vec2 uv1;',
+
+			'#endif',
+
+			'#ifdef USE_UV2',
+
+			'	attribute vec2 uv2;',
+
+			'#endif',
+
+			'#ifdef USE_UV3',
+
+			'	attribute vec2 uv3;',
+
+			'#endif',
+
+			'#ifdef USE_TANGENT',
+
+			'	attribute vec4 tangent;',
+
+			'#endif',
+
+			'#if defined( USE_COLOR_ALPHA )',
+
+			'	attribute vec4 color;',
+
+			'#elif defined( USE_COLOR )',
+
+			'	attribute vec3 color;',
+
+			'#endif',
+
+			'#ifdef USE_SKINNING',
+
+			'	attribute vec4 skinIndex;',
+			'	attribute vec4 skinWeight;',
+
+			'#endif',
+
+			'\n'
+
+		].filter( filterEmptyLine ).join( '\n' );
+
+		prefixFragment = [
+
+			generatePrecision( parameters ),
+
+			'#define SHADER_TYPE ' + parameters.shaderType,
+			'#define SHADER_NAME ' + parameters.shaderName,
+
+			customDefines,
+
+			parameters.useFog && parameters.fog ? '#define USE_FOG' : '',
+			parameters.useFog && parameters.fogExp2 ? '#define FOG_EXP2' : '',
+
+			parameters.alphaToCoverage ? '#define ALPHA_TO_COVERAGE' : '',
+			parameters.map ? '#define USE_MAP' : '',
+			parameters.matcap ? '#define USE_MATCAP' : '',
+			parameters.envMap ? '#define USE_ENVMAP' : '',
+			parameters.envMap ? '#define ' + envMapTypeDefine : '',
+			parameters.envMap ? '#define ' + envMapModeDefine : '',
+			parameters.envMap ? '#define ' + envMapBlendingDefine : '',
+			envMapCubeUVSize ? '#define CUBEUV_TEXEL_WIDTH ' + envMapCubeUVSize.texelWidth : '',
+			envMapCubeUVSize ? '#define CUBEUV_TEXEL_HEIGHT ' + envMapCubeUVSize.texelHeight : '',
+			envMapCubeUVSize ? '#define CUBEUV_MAX_MIP ' + envMapCubeUVSize.maxMip + '.0' : '',
+			parameters.lightMap ? '#define USE_LIGHTMAP' : '',
+			parameters.aoMap ? '#define USE_AOMAP' : '',
+			parameters.bumpMap ? '#define USE_BUMPMAP' : '',
+			parameters.normalMap ? '#define USE_NORMALMAP' : '',
+			parameters.normalMapObjectSpace ? '#define USE_NORMALMAP_OBJECTSPACE' : '',
+			parameters.normalMapTangentSpace ? '#define USE_NORMALMAP_TANGENTSPACE' : '',
+			parameters.emissiveMap ? '#define USE_EMISSIVEMAP' : '',
+
+			parameters.anisotropy ? '#define USE_ANISOTROPY' : '',
+			parameters.anisotropyMap ? '#define USE_ANISOTROPYMAP' : '',
+
+			parameters.clearcoat ? '#define USE_CLEARCOAT' : '',
+			parameters.clearcoatMap ? '#define USE_CLEARCOATMAP' : '',
+			parameters.clearcoatRoughnessMap ? '#define USE_CLEARCOAT_ROUGHNESSMAP' : '',
+			parameters.clearcoatNormalMap ? '#define USE_CLEARCOAT_NORMALMAP' : '',
+
+			parameters.dispersion ? '#define USE_DISPERSION' : '',
+
+			parameters.iridescence ? '#define USE_IRIDESCENCE' : '',
+			parameters.iridescenceMap ? '#define USE_IRIDESCENCEMAP' : '',
+			parameters.iridescenceThicknessMap ? '#define USE_IRIDESCENCE_THICKNESSMAP' : '',
+
+			parameters.specularMap ? '#define USE_SPECULARMAP' : '',
+			parameters.specularColorMap ? '#define USE_SPECULAR_COLORMAP' : '',
+			parameters.specularIntensityMap ? '#define USE_SPECULAR_INTENSITYMAP' : '',
+
+			parameters.roughnessMap ? '#define USE_ROUGHNESSMAP' : '',
+			parameters.metalnessMap ? '#define USE_METALNESSMAP' : '',
+
+			parameters.alphaMap ? '#define USE_ALPHAMAP' : '',
+			parameters.alphaTest ? '#define USE_ALPHATEST' : '',
+			parameters.alphaHash ? '#define USE_ALPHAHASH' : '',
+
+			parameters.sheen ? '#define USE_SHEEN' : '',
+			parameters.sheenColorMap ? '#define USE_SHEEN_COLORMAP' : '',
+			parameters.sheenRoughnessMap ? '#define USE_SHEEN_ROUGHNESSMAP' : '',
+
+			parameters.transmission ? '#define USE_TRANSMISSION' : '',
+			parameters.transmissionMap ? '#define USE_TRANSMISSIONMAP' : '',
+			parameters.thicknessMap ? '#define USE_THICKNESSMAP' : '',
+
+			parameters.vertexTangents && parameters.flatShading === false ? '#define USE_TANGENT' : '',
+			parameters.vertexColors || parameters.instancingColor || parameters.batchingColor ? '#define USE_COLOR' : '',
+			parameters.vertexAlphas ? '#define USE_COLOR_ALPHA' : '',
+			parameters.vertexUv1s ? '#define USE_UV1' : '',
+			parameters.vertexUv2s ? '#define USE_UV2' : '',
+			parameters.vertexUv3s ? '#define USE_UV3' : '',
+
+			parameters.pointsUvs ? '#define USE_POINTS_UV' : '',
+
+			parameters.gradientMap ? '#define USE_GRADIENTMAP' : '',
+
+			parameters.flatShading ? '#define FLAT_SHADED' : '',
+
+			parameters.doubleSided ? '#define DOUBLE_SIDED' : '',
+			parameters.flipSided ? '#define FLIP_SIDED' : '',
+
+			parameters.shadowMapEnabled ? '#define USE_SHADOWMAP' : '',
+			parameters.shadowMapEnabled ? '#define ' + shadowMapTypeDefine : '',
+
+			parameters.premultipliedAlpha ? '#define PREMULTIPLIED_ALPHA' : '',
+
+			parameters.numLightProbes > 0 ? '#define USE_LIGHT_PROBES' : '',
+
+			parameters.decodeVideoTexture ? '#define DECODE_VIDEO_TEXTURE' : '',
+
+			parameters.logarithmicDepthBuffer ? '#define USE_LOGDEPTHBUF' : '',
+
+			'uniform mat4 viewMatrix;',
+			'uniform vec3 cameraPosition;',
+			'uniform bool isOrthographic;',
+
+			( parameters.toneMapping !== NoToneMapping ) ? '#define TONE_MAPPING' : '',
+			( parameters.toneMapping !== NoToneMapping ) ? ShaderChunk[ 'tonemapping_pars_fragment' ] : '', // this code is required here because it is used by the toneMapping() function defined below
+			( parameters.toneMapping !== NoToneMapping ) ? getToneMappingFunction( 'toneMapping', parameters.toneMapping ) : '',
+
+			parameters.dithering ? '#define DITHERING' : '',
+			parameters.opaque ? '#define OPAQUE' : '',
+
+			ShaderChunk[ 'colorspace_pars_fragment' ], // this code is required here because it is used by the various encoding/decoding function defined below
+			getTexelEncodingFunction( 'linearToOutputTexel', parameters.outputColorSpace ),
+			getLuminanceFunction(),
+
+			parameters.useDepthPacking ? '#define DEPTH_PACKING ' + parameters.depthPacking : '',
+
+			'\n'
+
+		].filter( filterEmptyLine ).join( '\n' );
+
+	}
+
+	vertexShader = resolveIncludes( vertexShader );
+	vertexShader = replaceLightNums( vertexShader, parameters );
+	vertexShader = replaceClippingPlaneNums( vertexShader, parameters );
+
+	fragmentShader = resolveIncludes( fragmentShader );
+	fragmentShader = replaceLightNums( fragmentShader, parameters );
+	fragmentShader = replaceClippingPlaneNums( fragmentShader, parameters );
+
+	vertexShader = unrollLoops( vertexShader );
+	fragmentShader = unrollLoops( fragmentShader );
+
+	if ( parameters.isRawShaderMaterial !== true ) {
+
+		// GLSL 3.0 conversion for built-in materials and ShaderMaterial
+
+		versionString = '#version 300 es\n';
+
+		prefixVertex = [
+			customVertexExtensions,
+			'#define attribute in',
+			'#define varying out',
+			'#define texture2D texture'
+		].join( '\n' ) + '\n' + prefixVertex;
+
+		prefixFragment = [
+			'#define varying in',
+			( parameters.glslVersion === GLSL3 ) ? '' : 'layout(location = 0) out highp vec4 pc_fragColor;',
+			( parameters.glslVersion === GLSL3 ) ? '' : '#define gl_FragColor pc_fragColor',
+			'#define gl_FragDepthEXT gl_FragDepth',
+			'#define texture2D texture',
+			'#define textureCube texture',
+			'#define texture2DProj textureProj',
+			'#define texture2DLodEXT textureLod',
+			'#define texture2DProjLodEXT textureProjLod',
+			'#define textureCubeLodEXT textureLod',
+			'#define texture2DGradEXT textureGrad',
+			'#define texture2DProjGradEXT textureProjGrad',
+			'#define textureCubeGradEXT textureGrad'
+		].join( '\n' ) + '\n' + prefixFragment;
+
+	}
+
+	const vertexGlsl = versionString + prefixVertex + vertexShader;
+	const fragmentGlsl = versionString + prefixFragment + fragmentShader;
+
+	// console.log( '*VERTEX*', vertexGlsl );
+	// console.log( '*FRAGMENT*', fragmentGlsl );
+
+	const glVertexShader = WebGLShader( gl, gl.VERTEX_SHADER, vertexGlsl );
+	const glFragmentShader = WebGLShader( gl, gl.FRAGMENT_SHADER, fragmentGlsl );
+
+	gl.attachShader( program, glVertexShader );
+	gl.attachShader( program, glFragmentShader );
+
+	// Force a particular attribute to index 0.
+
+	if ( parameters.index0AttributeName !== undefined ) {
+
+		gl.bindAttribLocation( program, 0, parameters.index0AttributeName );
+
+	} else if ( parameters.morphTargets === true ) {
+
+		// programs with morphTargets displace position out of attribute 0
+		gl.bindAttribLocation( program, 0, 'position' );
+
+	}
+
+	gl.linkProgram( program );
+
+	function onFirstUse( self ) {
+
+		// check for link errors
+		if ( renderer.debug.checkShaderErrors ) {
+
+			const programLog = gl.getProgramInfoLog( program ).trim();
+			const vertexLog = gl.getShaderInfoLog( glVertexShader ).trim();
+			const fragmentLog = gl.getShaderInfoLog( glFragmentShader ).trim();
+
+			let runnable = true;
+			let haveDiagnostics = true;
+
+			if ( gl.getProgramParameter( program, gl.LINK_STATUS ) === false ) {
+
+				runnable = false;
+
+				if ( typeof renderer.debug.onShaderError === 'function' ) {
+
+					renderer.debug.onShaderError( gl, program, glVertexShader, glFragmentShader );
+
+				} else {
+
+					// default error reporting
+
+					const vertexErrors = getShaderErrors( gl, glVertexShader, 'vertex' );
+					const fragmentErrors = getShaderErrors( gl, glFragmentShader, 'fragment' );
+
+					console.error(
+						'THREE.WebGLProgram: Shader Error ' + gl.getError() + ' - ' +
+						'VALIDATE_STATUS ' + gl.getProgramParameter( program, gl.VALIDATE_STATUS ) + '\n\n' +
+						'Material Name: ' + self.name + '\n' +
+						'Material Type: ' + self.type + '\n\n' +
+						'Program Info Log: ' + programLog + '\n' +
+						vertexErrors + '\n' +
+						fragmentErrors
+					);
+
+				}
+
+			} else if ( programLog !== '' ) {
+
+				console.warn( 'THREE.WebGLProgram: Program Info Log:', programLog );
+
+			} else if ( vertexLog === '' || fragmentLog === '' ) {
+
+				haveDiagnostics = false;
+
+			}
+
+			if ( haveDiagnostics ) {
+
+				self.diagnostics = {
+
+					runnable: runnable,
+
+					programLog: programLog,
+
+					vertexShader: {
+
+						log: vertexLog,
+						prefix: prefixVertex
+
+					},
+
+					fragmentShader: {
+
+						log: fragmentLog,
+						prefix: prefixFragment
+
+					}
+
+				};
+
+			}
+
+		}
+
+		// Clean up
+
+		// Crashes in iOS9 and iOS10. #18402
+		// gl.detachShader( program, glVertexShader );
+		// gl.detachShader( program, glFragmentShader );
+
+		gl.deleteShader( glVertexShader );
+		gl.deleteShader( glFragmentShader );
+
+		cachedUniforms = new WebGLUniforms( gl, program );
+		cachedAttributes = fetchAttributeLocations( gl, program );
+
+	}
+
+	// set up caching for uniform locations
+
+	let cachedUniforms;
+
+	this.getUniforms = function () {
+
+		if ( cachedUniforms === undefined ) {
+
+			// Populates cachedUniforms and cachedAttributes
+			onFirstUse( this );
+
+		}
+
+		return cachedUniforms;
+
+	};
+
+	// set up caching for attribute locations
+
+	let cachedAttributes;
+
+	this.getAttributes = function () {
+
+		if ( cachedAttributes === undefined ) {
+
+			// Populates cachedAttributes and cachedUniforms
+			onFirstUse( this );
+
+		}
+
+		return cachedAttributes;
+
+	};
+
+	// indicate when the program is ready to be used. if the KHR_parallel_shader_compile extension isn't supported,
+	// flag the program as ready immediately. It may cause a stall when it's first used.
+
+	let programReady = ( parameters.rendererExtensionParallelShaderCompile === false );
+
+	this.isReady = function () {
+
+		if ( programReady === false ) {
+
+			programReady = gl.getProgramParameter( program, COMPLETION_STATUS_KHR );
+
+		}
+
+		return programReady;
+
+	};
+
+	// free resource
+
+	this.destroy = function () {
+
+		bindingStates.releaseStatesOfProgram( this );
+
+		gl.deleteProgram( program );
+		this.program = undefined;
+
+	};
+
+	//
+
+	this.type = parameters.shaderType;
+	this.name = parameters.shaderName;
+	this.id = programIdCount ++;
+	this.cacheKey = cacheKey;
+	this.usedTimes = 1;
+	this.program = program;
+	this.vertexShader = glVertexShader;
+	this.fragmentShader = glFragmentShader;
+
+	return this;
+
+}
+
+let _id$1 = 0;
+
+class WebGLShaderCache {
+
+	constructor() {
+
+		this.shaderCache = new Map();
+		this.materialCache = new Map();
+
+	}
+
+	update( material ) {
+
+		const vertexShader = material.vertexShader;
+		const fragmentShader = material.fragmentShader;
+
+		const vertexShaderStage = this._getShaderStage( vertexShader );
+		const fragmentShaderStage = this._getShaderStage( fragmentShader );
+
+		const materialShaders = this._getShaderCacheForMaterial( material );
+
+		if ( materialShaders.has( vertexShaderStage ) === false ) {
+
+			materialShaders.add( vertexShaderStage );
+			vertexShaderStage.usedTimes ++;
+
+		}
+
+		if ( materialShaders.has( fragmentShaderStage ) === false ) {
+
+			materialShaders.add( fragmentShaderStage );
+			fragmentShaderStage.usedTimes ++;
+
+		}
+
+		return this;
+
+	}
+
+	remove( material ) {
+
+		const materialShaders = this.materialCache.get( material );
+
+		for ( const shaderStage of materialShaders ) {
+
+			shaderStage.usedTimes --;
+
+			if ( shaderStage.usedTimes === 0 ) this.shaderCache.delete( shaderStage.code );
+
+		}
+
+		this.materialCache.delete( material );
+
+		return this;
+
+	}
+
+	getVertexShaderID( material ) {
+
+		return this._getShaderStage( material.vertexShader ).id;
+
+	}
+
+	getFragmentShaderID( material ) {
+
+		return this._getShaderStage( material.fragmentShader ).id;
+
+	}
+
+	dispose() {
+
+		this.shaderCache.clear();
+		this.materialCache.clear();
+
+	}
+
+	_getShaderCacheForMaterial( material ) {
+
+		const cache = this.materialCache;
+		let set = cache.get( material );
+
+		if ( set === undefined ) {
+
+			set = new Set();
+			cache.set( material, set );
+
+		}
+
+		return set;
+
+	}
+
+	_getShaderStage( code ) {
+
+		const cache = this.shaderCache;
+		let stage = cache.get( code );
+
+		if ( stage === undefined ) {
+
+			stage = new WebGLShaderStage( code );
+			cache.set( code, stage );
+
+		}
+
+		return stage;
+
+	}
+
+}
+
+class WebGLShaderStage {
+
+	constructor( code ) {
+
+		this.id = _id$1 ++;
+
+		this.code = code;
+		this.usedTimes = 0;
+
+	}
+
+}
+
+function WebGLPrograms( renderer, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping ) {
+
+	const _programLayers = new Layers();
+	const _customShaders = new WebGLShaderCache();
+	const _activeChannels = new Set();
+	const programs = [];
+
+	const logarithmicDepthBuffer = capabilities.logarithmicDepthBuffer;
+	const SUPPORTS_VERTEX_TEXTURES = capabilities.vertexTextures;
+
+	let precision = capabilities.precision;
+
+	const shaderIDs = {
+		MeshDepthMaterial: 'depth',
+		MeshDistanceMaterial: 'distanceRGBA',
+		MeshNormalMaterial: 'normal',
+		MeshBasicMaterial: 'basic',
+		MeshLambertMaterial: 'lambert',
+		MeshPhongMaterial: 'phong',
+		MeshToonMaterial: 'toon',
+		MeshStandardMaterial: 'physical',
+		MeshPhysicalMaterial: 'physical',
+		MeshMatcapMaterial: 'matcap',
+		LineBasicMaterial: 'basic',
+		LineDashedMaterial: 'dashed',
+		PointsMaterial: 'points',
+		ShadowMaterial: 'shadow',
+		SpriteMaterial: 'sprite'
+	};
+
+	function getChannel( value ) {
+
+		_activeChannels.add( value );
+
+		if ( value === 0 ) return 'uv';
+
+		return `uv${ value }`;
+
+	}
+
+	function getParameters( material, lights, shadows, scene, object ) {
+
+		const fog = scene.fog;
+		const geometry = object.geometry;
+		const environment = material.isMeshStandardMaterial ? scene.environment : null;
+
+		const envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );
+		const envMapCubeUVHeight = ( !! envMap ) && ( envMap.mapping === CubeUVReflectionMapping ) ? envMap.image.height : null;
+
+		const shaderID = shaderIDs[ material.type ];
+
+		// heuristics to create shader parameters according to lights in the scene
+		// (not to blow over maxLights budget)
+
+		if ( material.precision !== null ) {
+
+			precision = capabilities.getMaxPrecision( material.precision );
+
+			if ( precision !== material.precision ) {
+
+				console.warn( 'THREE.WebGLProgram.getParameters:', material.precision, 'not supported, using', precision, 'instead.' );
+
+			}
+
+		}
+
+		//
+
+		const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
+		const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;
+
+		let morphTextureStride = 0;
+
+		if ( geometry.morphAttributes.position !== undefined ) morphTextureStride = 1;
+		if ( geometry.morphAttributes.normal !== undefined ) morphTextureStride = 2;
+		if ( geometry.morphAttributes.color !== undefined ) morphTextureStride = 3;
+
+		//
+
+		let vertexShader, fragmentShader;
+		let customVertexShaderID, customFragmentShaderID;
+
+		if ( shaderID ) {
+
+			const shader = ShaderLib[ shaderID ];
+
+			vertexShader = shader.vertexShader;
+			fragmentShader = shader.fragmentShader;
+
+		} else {
+
+			vertexShader = material.vertexShader;
+			fragmentShader = material.fragmentShader;
+
+			_customShaders.update( material );
+
+			customVertexShaderID = _customShaders.getVertexShaderID( material );
+			customFragmentShaderID = _customShaders.getFragmentShaderID( material );
+
+		}
+
+		const currentRenderTarget = renderer.getRenderTarget();
+
+		const IS_INSTANCEDMESH = object.isInstancedMesh === true;
+		const IS_BATCHEDMESH = object.isBatchedMesh === true;
+
+		const HAS_MAP = !! material.map;
+		const HAS_MATCAP = !! material.matcap;
+		const HAS_ENVMAP = !! envMap;
+		const HAS_AOMAP = !! material.aoMap;
+		const HAS_LIGHTMAP = !! material.lightMap;
+		const HAS_BUMPMAP = !! material.bumpMap;
+		const HAS_NORMALMAP = !! material.normalMap;
+		const HAS_DISPLACEMENTMAP = !! material.displacementMap;
+		const HAS_EMISSIVEMAP = !! material.emissiveMap;
+
+		const HAS_METALNESSMAP = !! material.metalnessMap;
+		const HAS_ROUGHNESSMAP = !! material.roughnessMap;
+
+		const HAS_ANISOTROPY = material.anisotropy > 0;
+		const HAS_CLEARCOAT = material.clearcoat > 0;
+		const HAS_DISPERSION = material.dispersion > 0;
+		const HAS_IRIDESCENCE = material.iridescence > 0;
+		const HAS_SHEEN = material.sheen > 0;
+		const HAS_TRANSMISSION = material.transmission > 0;
+
+		const HAS_ANISOTROPYMAP = HAS_ANISOTROPY && !! material.anisotropyMap;
+
+		const HAS_CLEARCOATMAP = HAS_CLEARCOAT && !! material.clearcoatMap;
+		const HAS_CLEARCOAT_NORMALMAP = HAS_CLEARCOAT && !! material.clearcoatNormalMap;
+		const HAS_CLEARCOAT_ROUGHNESSMAP = HAS_CLEARCOAT && !! material.clearcoatRoughnessMap;
+
+		const HAS_IRIDESCENCEMAP = HAS_IRIDESCENCE && !! material.iridescenceMap;
+		const HAS_IRIDESCENCE_THICKNESSMAP = HAS_IRIDESCENCE && !! material.iridescenceThicknessMap;
+
+		const HAS_SHEEN_COLORMAP = HAS_SHEEN && !! material.sheenColorMap;
+		const HAS_SHEEN_ROUGHNESSMAP = HAS_SHEEN && !! material.sheenRoughnessMap;
+
+		const HAS_SPECULARMAP = !! material.specularMap;
+		const HAS_SPECULAR_COLORMAP = !! material.specularColorMap;
+		const HAS_SPECULAR_INTENSITYMAP = !! material.specularIntensityMap;
+
+		const HAS_TRANSMISSIONMAP = HAS_TRANSMISSION && !! material.transmissionMap;
+		const HAS_THICKNESSMAP = HAS_TRANSMISSION && !! material.thicknessMap;
+
+		const HAS_GRADIENTMAP = !! material.gradientMap;
+
+		const HAS_ALPHAMAP = !! material.alphaMap;
+
+		const HAS_ALPHATEST = material.alphaTest > 0;
+
+		const HAS_ALPHAHASH = !! material.alphaHash;
+
+		const HAS_EXTENSIONS = !! material.extensions;
+
+		let toneMapping = NoToneMapping;
+
+		if ( material.toneMapped ) {
+
+			if ( currentRenderTarget === null || currentRenderTarget.isXRRenderTarget === true ) {
+
+				toneMapping = renderer.toneMapping;
+
+			}
+
+		}
+
+		const parameters = {
+
+			shaderID: shaderID,
+			shaderType: material.type,
+			shaderName: material.name,
+
+			vertexShader: vertexShader,
+			fragmentShader: fragmentShader,
+			defines: material.defines,
+
+			customVertexShaderID: customVertexShaderID,
+			customFragmentShaderID: customFragmentShaderID,
+
+			isRawShaderMaterial: material.isRawShaderMaterial === true,
+			glslVersion: material.glslVersion,
+
+			precision: precision,
+
+			batching: IS_BATCHEDMESH,
+			batchingColor: IS_BATCHEDMESH && object._colorsTexture !== null,
+			instancing: IS_INSTANCEDMESH,
+			instancingColor: IS_INSTANCEDMESH && object.instanceColor !== null,
+			instancingMorph: IS_INSTANCEDMESH && object.morphTexture !== null,
+
+			supportsVertexTextures: SUPPORTS_VERTEX_TEXTURES,
+			outputColorSpace: ( currentRenderTarget === null ) ? renderer.outputColorSpace : ( currentRenderTarget.isXRRenderTarget === true ? currentRenderTarget.texture.colorSpace : LinearSRGBColorSpace ),
+			alphaToCoverage: !! material.alphaToCoverage,
+
+			map: HAS_MAP,
+			matcap: HAS_MATCAP,
+			envMap: HAS_ENVMAP,
+			envMapMode: HAS_ENVMAP && envMap.mapping,
+			envMapCubeUVHeight: envMapCubeUVHeight,
+			aoMap: HAS_AOMAP,
+			lightMap: HAS_LIGHTMAP,
+			bumpMap: HAS_BUMPMAP,
+			normalMap: HAS_NORMALMAP,
+			displacementMap: SUPPORTS_VERTEX_TEXTURES && HAS_DISPLACEMENTMAP,
+			emissiveMap: HAS_EMISSIVEMAP,
+
+			normalMapObjectSpace: HAS_NORMALMAP && material.normalMapType === ObjectSpaceNormalMap,
+			normalMapTangentSpace: HAS_NORMALMAP && material.normalMapType === TangentSpaceNormalMap,
+
+			metalnessMap: HAS_METALNESSMAP,
+			roughnessMap: HAS_ROUGHNESSMAP,
+
+			anisotropy: HAS_ANISOTROPY,
+			anisotropyMap: HAS_ANISOTROPYMAP,
+
+			clearcoat: HAS_CLEARCOAT,
+			clearcoatMap: HAS_CLEARCOATMAP,
+			clearcoatNormalMap: HAS_CLEARCOAT_NORMALMAP,
+			clearcoatRoughnessMap: HAS_CLEARCOAT_ROUGHNESSMAP,
+
+			dispersion: HAS_DISPERSION,
+
+			iridescence: HAS_IRIDESCENCE,
+			iridescenceMap: HAS_IRIDESCENCEMAP,
+			iridescenceThicknessMap: HAS_IRIDESCENCE_THICKNESSMAP,
+
+			sheen: HAS_SHEEN,
+			sheenColorMap: HAS_SHEEN_COLORMAP,
+			sheenRoughnessMap: HAS_SHEEN_ROUGHNESSMAP,
+
+			specularMap: HAS_SPECULARMAP,
+			specularColorMap: HAS_SPECULAR_COLORMAP,
+			specularIntensityMap: HAS_SPECULAR_INTENSITYMAP,
+
+			transmission: HAS_TRANSMISSION,
+			transmissionMap: HAS_TRANSMISSIONMAP,
+			thicknessMap: HAS_THICKNESSMAP,
+
+			gradientMap: HAS_GRADIENTMAP,
+
+			opaque: material.transparent === false && material.blending === NormalBlending && material.alphaToCoverage === false,
+
+			alphaMap: HAS_ALPHAMAP,
+			alphaTest: HAS_ALPHATEST,
+			alphaHash: HAS_ALPHAHASH,
+
+			combine: material.combine,
+
+			//
+
+			mapUv: HAS_MAP && getChannel( material.map.channel ),
+			aoMapUv: HAS_AOMAP && getChannel( material.aoMap.channel ),
+			lightMapUv: HAS_LIGHTMAP && getChannel( material.lightMap.channel ),
+			bumpMapUv: HAS_BUMPMAP && getChannel( material.bumpMap.channel ),
+			normalMapUv: HAS_NORMALMAP && getChannel( material.normalMap.channel ),
+			displacementMapUv: HAS_DISPLACEMENTMAP && getChannel( material.displacementMap.channel ),
+			emissiveMapUv: HAS_EMISSIVEMAP && getChannel( material.emissiveMap.channel ),
+
+			metalnessMapUv: HAS_METALNESSMAP && getChannel( material.metalnessMap.channel ),
+			roughnessMapUv: HAS_ROUGHNESSMAP && getChannel( material.roughnessMap.channel ),
+
+			anisotropyMapUv: HAS_ANISOTROPYMAP && getChannel( material.anisotropyMap.channel ),
+
+			clearcoatMapUv: HAS_CLEARCOATMAP && getChannel( material.clearcoatMap.channel ),
+			clearcoatNormalMapUv: HAS_CLEARCOAT_NORMALMAP && getChannel( material.clearcoatNormalMap.channel ),
+			clearcoatRoughnessMapUv: HAS_CLEARCOAT_ROUGHNESSMAP && getChannel( material.clearcoatRoughnessMap.channel ),
+
+			iridescenceMapUv: HAS_IRIDESCENCEMAP && getChannel( material.iridescenceMap.channel ),
+			iridescenceThicknessMapUv: HAS_IRIDESCENCE_THICKNESSMAP && getChannel( material.iridescenceThicknessMap.channel ),
+
+			sheenColorMapUv: HAS_SHEEN_COLORMAP && getChannel( material.sheenColorMap.channel ),
+			sheenRoughnessMapUv: HAS_SHEEN_ROUGHNESSMAP && getChannel( material.sheenRoughnessMap.channel ),
+
+			specularMapUv: HAS_SPECULARMAP && getChannel( material.specularMap.channel ),
+			specularColorMapUv: HAS_SPECULAR_COLORMAP && getChannel( material.specularColorMap.channel ),
+			specularIntensityMapUv: HAS_SPECULAR_INTENSITYMAP && getChannel( material.specularIntensityMap.channel ),
+
+			transmissionMapUv: HAS_TRANSMISSIONMAP && getChannel( material.transmissionMap.channel ),
+			thicknessMapUv: HAS_THICKNESSMAP && getChannel( material.thicknessMap.channel ),
+
+			alphaMapUv: HAS_ALPHAMAP && getChannel( material.alphaMap.channel ),
+
+			//
+
+			vertexTangents: !! geometry.attributes.tangent && ( HAS_NORMALMAP || HAS_ANISOTROPY ),
+			vertexColors: material.vertexColors,
+			vertexAlphas: material.vertexColors === true && !! geometry.attributes.color && geometry.attributes.color.itemSize === 4,
+
+			pointsUvs: object.isPoints === true && !! geometry.attributes.uv && ( HAS_MAP || HAS_ALPHAMAP ),
+
+			fog: !! fog,
+			useFog: material.fog === true,
+			fogExp2: ( !! fog && fog.isFogExp2 ),
+
+			flatShading: material.flatShading === true,
+
+			sizeAttenuation: material.sizeAttenuation === true,
+			logarithmicDepthBuffer: logarithmicDepthBuffer,
+
+			skinning: object.isSkinnedMesh === true,
+
+			morphTargets: geometry.morphAttributes.position !== undefined,
+			morphNormals: geometry.morphAttributes.normal !== undefined,
+			morphColors: geometry.morphAttributes.color !== undefined,
+			morphTargetsCount: morphTargetsCount,
+			morphTextureStride: morphTextureStride,
+
+			numDirLights: lights.directional.length,
+			numPointLights: lights.point.length,
+			numSpotLights: lights.spot.length,
+			numSpotLightMaps: lights.spotLightMap.length,
+			numRectAreaLights: lights.rectArea.length,
+			numHemiLights: lights.hemi.length,
+
+			numDirLightShadows: lights.directionalShadowMap.length,
+			numPointLightShadows: lights.pointShadowMap.length,
+			numSpotLightShadows: lights.spotShadowMap.length,
+			numSpotLightShadowsWithMaps: lights.numSpotLightShadowsWithMaps,
+
+			numLightProbes: lights.numLightProbes,
+
+			numClippingPlanes: clipping.numPlanes,
+			numClipIntersection: clipping.numIntersection,
+
+			dithering: material.dithering,
+
+			shadowMapEnabled: renderer.shadowMap.enabled && shadows.length > 0,
+			shadowMapType: renderer.shadowMap.type,
+
+			toneMapping: toneMapping,
+
+			decodeVideoTexture: HAS_MAP && ( material.map.isVideoTexture === true ) && ( ColorManagement.getTransfer( material.map.colorSpace ) === SRGBTransfer ),
+
+			premultipliedAlpha: material.premultipliedAlpha,
+
+			doubleSided: material.side === DoubleSide,
+			flipSided: material.side === BackSide,
+
+			useDepthPacking: material.depthPacking >= 0,
+			depthPacking: material.depthPacking || 0,
+
+			index0AttributeName: material.index0AttributeName,
+
+			extensionClipCullDistance: HAS_EXTENSIONS && material.extensions.clipCullDistance === true && extensions.has( 'WEBGL_clip_cull_distance' ),
+			extensionMultiDraw: ( HAS_EXTENSIONS && material.extensions.multiDraw === true || IS_BATCHEDMESH ) && extensions.has( 'WEBGL_multi_draw' ),
+
+			rendererExtensionParallelShaderCompile: extensions.has( 'KHR_parallel_shader_compile' ),
+
+			customProgramCacheKey: material.customProgramCacheKey()
+
+		};
+
+		// the usage of getChannel() determines the active texture channels for this shader
+
+		parameters.vertexUv1s = _activeChannels.has( 1 );
+		parameters.vertexUv2s = _activeChannels.has( 2 );
+		parameters.vertexUv3s = _activeChannels.has( 3 );
+
+		_activeChannels.clear();
+
+		return parameters;
+
+	}
+
+	function getProgramCacheKey( parameters ) {
+
+		const array = [];
+
+		if ( parameters.shaderID ) {
+
+			array.push( parameters.shaderID );
+
+		} else {
+
+			array.push( parameters.customVertexShaderID );
+			array.push( parameters.customFragmentShaderID );
+
+		}
+
+		if ( parameters.defines !== undefined ) {
+
+			for ( const name in parameters.defines ) {
+
+				array.push( name );
+				array.push( parameters.defines[ name ] );
+
+			}
+
+		}
+
+		if ( parameters.isRawShaderMaterial === false ) {
+
+			getProgramCacheKeyParameters( array, parameters );
+			getProgramCacheKeyBooleans( array, parameters );
+			array.push( renderer.outputColorSpace );
+
+		}
+
+		array.push( parameters.customProgramCacheKey );
+
+		return array.join();
+
+	}
+
+	function getProgramCacheKeyParameters( array, parameters ) {
+
+		array.push( parameters.precision );
+		array.push( parameters.outputColorSpace );
+		array.push( parameters.envMapMode );
+		array.push( parameters.envMapCubeUVHeight );
+		array.push( parameters.mapUv );
+		array.push( parameters.alphaMapUv );
+		array.push( parameters.lightMapUv );
+		array.push( parameters.aoMapUv );
+		array.push( parameters.bumpMapUv );
+		array.push( parameters.normalMapUv );
+		array.push( parameters.displacementMapUv );
+		array.push( parameters.emissiveMapUv );
+		array.push( parameters.metalnessMapUv );
+		array.push( parameters.roughnessMapUv );
+		array.push( parameters.anisotropyMapUv );
+		array.push( parameters.clearcoatMapUv );
+		array.push( parameters.clearcoatNormalMapUv );
+		array.push( parameters.clearcoatRoughnessMapUv );
+		array.push( parameters.iridescenceMapUv );
+		array.push( parameters.iridescenceThicknessMapUv );
+		array.push( parameters.sheenColorMapUv );
+		array.push( parameters.sheenRoughnessMapUv );
+		array.push( parameters.specularMapUv );
+		array.push( parameters.specularColorMapUv );
+		array.push( parameters.specularIntensityMapUv );
+		array.push( parameters.transmissionMapUv );
+		array.push( parameters.thicknessMapUv );
+		array.push( parameters.combine );
+		array.push( parameters.fogExp2 );
+		array.push( parameters.sizeAttenuation );
+		array.push( parameters.morphTargetsCount );
+		array.push( parameters.morphAttributeCount );
+		array.push( parameters.numDirLights );
+		array.push( parameters.numPointLights );
+		array.push( parameters.numSpotLights );
+		array.push( parameters.numSpotLightMaps );
+		array.push( parameters.numHemiLights );
+		array.push( parameters.numRectAreaLights );
+		array.push( parameters.numDirLightShadows );
+		array.push( parameters.numPointLightShadows );
+		array.push( parameters.numSpotLightShadows );
+		array.push( parameters.numSpotLightShadowsWithMaps );
+		array.push( parameters.numLightProbes );
+		array.push( parameters.shadowMapType );
+		array.push( parameters.toneMapping );
+		array.push( parameters.numClippingPlanes );
+		array.push( parameters.numClipIntersection );
+		array.push( parameters.depthPacking );
+
+	}
+
+	function getProgramCacheKeyBooleans( array, parameters ) {
+
+		_programLayers.disableAll();
+
+		if ( parameters.supportsVertexTextures )
+			_programLayers.enable( 0 );
+		if ( parameters.instancing )
+			_programLayers.enable( 1 );
+		if ( parameters.instancingColor )
+			_programLayers.enable( 2 );
+		if ( parameters.instancingMorph )
+			_programLayers.enable( 3 );
+		if ( parameters.matcap )
+			_programLayers.enable( 4 );
+		if ( parameters.envMap )
+			_programLayers.enable( 5 );
+		if ( parameters.normalMapObjectSpace )
+			_programLayers.enable( 6 );
+		if ( parameters.normalMapTangentSpace )
+			_programLayers.enable( 7 );
+		if ( parameters.clearcoat )
+			_programLayers.enable( 8 );
+		if ( parameters.iridescence )
+			_programLayers.enable( 9 );
+		if ( parameters.alphaTest )
+			_programLayers.enable( 10 );
+		if ( parameters.vertexColors )
+			_programLayers.enable( 11 );
+		if ( parameters.vertexAlphas )
+			_programLayers.enable( 12 );
+		if ( parameters.vertexUv1s )
+			_programLayers.enable( 13 );
+		if ( parameters.vertexUv2s )
+			_programLayers.enable( 14 );
+		if ( parameters.vertexUv3s )
+			_programLayers.enable( 15 );
+		if ( parameters.vertexTangents )
+			_programLayers.enable( 16 );
+		if ( parameters.anisotropy )
+			_programLayers.enable( 17 );
+		if ( parameters.alphaHash )
+			_programLayers.enable( 18 );
+		if ( parameters.batching )
+			_programLayers.enable( 19 );
+		if ( parameters.dispersion )
+			_programLayers.enable( 20 );
+		if ( parameters.batchingColor )
+			_programLayers.enable( 21 );
+
+		array.push( _programLayers.mask );
+		_programLayers.disableAll();
+
+		if ( parameters.fog )
+			_programLayers.enable( 0 );
+		if ( parameters.useFog )
+			_programLayers.enable( 1 );
+		if ( parameters.flatShading )
+			_programLayers.enable( 2 );
+		if ( parameters.logarithmicDepthBuffer )
+			_programLayers.enable( 3 );
+		if ( parameters.skinning )
+			_programLayers.enable( 4 );
+		if ( parameters.morphTargets )
+			_programLayers.enable( 5 );
+		if ( parameters.morphNormals )
+			_programLayers.enable( 6 );
+		if ( parameters.morphColors )
+			_programLayers.enable( 7 );
+		if ( parameters.premultipliedAlpha )
+			_programLayers.enable( 8 );
+		if ( parameters.shadowMapEnabled )
+			_programLayers.enable( 9 );
+		if ( parameters.doubleSided )
+			_programLayers.enable( 10 );
+		if ( parameters.flipSided )
+			_programLayers.enable( 11 );
+		if ( parameters.useDepthPacking )
+			_programLayers.enable( 12 );
+		if ( parameters.dithering )
+			_programLayers.enable( 13 );
+		if ( parameters.transmission )
+			_programLayers.enable( 14 );
+		if ( parameters.sheen )
+			_programLayers.enable( 15 );
+		if ( parameters.opaque )
+			_programLayers.enable( 16 );
+		if ( parameters.pointsUvs )
+			_programLayers.enable( 17 );
+		if ( parameters.decodeVideoTexture )
+			_programLayers.enable( 18 );
+		if ( parameters.alphaToCoverage )
+			_programLayers.enable( 19 );
+
+		array.push( _programLayers.mask );
+
+	}
+
+	function getUniforms( material ) {
+
+		const shaderID = shaderIDs[ material.type ];
+		let uniforms;
+
+		if ( shaderID ) {
+
+			const shader = ShaderLib[ shaderID ];
+			uniforms = UniformsUtils.clone( shader.uniforms );
+
+		} else {
+
+			uniforms = material.uniforms;
+
+		}
+
+		return uniforms;
+
+	}
+
+	function acquireProgram( parameters, cacheKey ) {
+
+		let program;
+
+		// Check if code has been already compiled
+		for ( let p = 0, pl = programs.length; p < pl; p ++ ) {
+
+			const preexistingProgram = programs[ p ];
+
+			if ( preexistingProgram.cacheKey === cacheKey ) {
+
+				program = preexistingProgram;
+				++ program.usedTimes;
+
+				break;
+
+			}
+
+		}
+
+		if ( program === undefined ) {
+
+			program = new WebGLProgram( renderer, cacheKey, parameters, bindingStates );
+			programs.push( program );
+
+		}
+
+		return program;
+
+	}
+
+	function releaseProgram( program ) {
+
+		if ( -- program.usedTimes === 0 ) {
+
+			// Remove from unordered set
+			const i = programs.indexOf( program );
+			programs[ i ] = programs[ programs.length - 1 ];
+			programs.pop();
+
+			// Free WebGL resources
+			program.destroy();
+
+		}
+
+	}
+
+	function releaseShaderCache( material ) {
+
+		_customShaders.remove( material );
+
+	}
+
+	function dispose() {
+
+		_customShaders.dispose();
+
+	}
+
+	return {
+		getParameters: getParameters,
+		getProgramCacheKey: getProgramCacheKey,
+		getUniforms: getUniforms,
+		acquireProgram: acquireProgram,
+		releaseProgram: releaseProgram,
+		releaseShaderCache: releaseShaderCache,
+		// Exposed for resource monitoring & error feedback via renderer.info:
+		programs: programs,
+		dispose: dispose
+	};
+
+}
+
+function WebGLProperties() {
+
+	let properties = new WeakMap();
+
+	function has( object ) {
+
+		return properties.has( object );
+
+	}
+
+	function get( object ) {
+
+		let map = properties.get( object );
+
+		if ( map === undefined ) {
+
+			map = {};
+			properties.set( object, map );
+
+		}
+
+		return map;
+
+	}
+
+	function remove( object ) {
+
+		properties.delete( object );
+
+	}
+
+	function update( object, key, value ) {
+
+		properties.get( object )[ key ] = value;
+
+	}
+
+	function dispose() {
+
+		properties = new WeakMap();
+
+	}
+
+	return {
+		has: has,
+		get: get,
+		remove: remove,
+		update: update,
+		dispose: dispose
+	};
+
+}
+
+function painterSortStable( a, b ) {
+
+	if ( a.groupOrder !== b.groupOrder ) {
+
+		return a.groupOrder - b.groupOrder;
+
+	} else if ( a.renderOrder !== b.renderOrder ) {
+
+		return a.renderOrder - b.renderOrder;
+
+	} else if ( a.material.id !== b.material.id ) {
+
+		return a.material.id - b.material.id;
+
+	} else if ( a.z !== b.z ) {
+
+		return a.z - b.z;
+
+	} else {
+
+		return a.id - b.id;
+
+	}
+
+}
+
+function reversePainterSortStable( a, b ) {
+
+	if ( a.groupOrder !== b.groupOrder ) {
+
+		return a.groupOrder - b.groupOrder;
+
+	} else if ( a.renderOrder !== b.renderOrder ) {
+
+		return a.renderOrder - b.renderOrder;
+
+	} else if ( a.z !== b.z ) {
+
+		return b.z - a.z;
+
+	} else {
+
+		return a.id - b.id;
+
+	}
+
+}
+
+
+function WebGLRenderList() {
+
+	const renderItems = [];
+	let renderItemsIndex = 0;
+
+	const opaque = [];
+	const transmissive = [];
+	const transparent = [];
+
+	function init() {
+
+		renderItemsIndex = 0;
+
+		opaque.length = 0;
+		transmissive.length = 0;
+		transparent.length = 0;
+
+	}
+
+	function getNextRenderItem( object, geometry, material, groupOrder, z, group ) {
+
+		let renderItem = renderItems[ renderItemsIndex ];
+
+		if ( renderItem === undefined ) {
+
+			renderItem = {
+				id: object.id,
+				object: object,
+				geometry: geometry,
+				material: material,
+				groupOrder: groupOrder,
+				renderOrder: object.renderOrder,
+				z: z,
+				group: group
+			};
+
+			renderItems[ renderItemsIndex ] = renderItem;
+
+		} else {
+
+			renderItem.id = object.id;
+			renderItem.object = object;
+			renderItem.geometry = geometry;
+			renderItem.material = material;
+			renderItem.groupOrder = groupOrder;
+			renderItem.renderOrder = object.renderOrder;
+			renderItem.z = z;
+			renderItem.group = group;
+
+		}
+
+		renderItemsIndex ++;
+
+		return renderItem;
+
+	}
+
+	function push( object, geometry, material, groupOrder, z, group ) {
+
+		const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );
+
+		if ( material.transmission > 0.0 ) {
+
+			transmissive.push( renderItem );
+
+		} else if ( material.transparent === true ) {
+
+			transparent.push( renderItem );
+
+		} else {
+
+			opaque.push( renderItem );
+
+		}
+
+	}
+
+	function unshift( object, geometry, material, groupOrder, z, group ) {
+
+		const renderItem = getNextRenderItem( object, geometry, material, groupOrder, z, group );
+
+		if ( material.transmission > 0.0 ) {
+
+			transmissive.unshift( renderItem );
+
+		} else if ( material.transparent === true ) {
+
+			transparent.unshift( renderItem );
+
+		} else {
+
+			opaque.unshift( renderItem );
+
+		}
+
+	}
+
+	function sort( customOpaqueSort, customTransparentSort ) {
+
+		if ( opaque.length > 1 ) opaque.sort( customOpaqueSort || painterSortStable );
+		if ( transmissive.length > 1 ) transmissive.sort( customTransparentSort || reversePainterSortStable );
+		if ( transparent.length > 1 ) transparent.sort( customTransparentSort || reversePainterSortStable );
+
+	}
+
+	function finish() {
+
+		// Clear references from inactive renderItems in the list
+
+		for ( let i = renderItemsIndex, il = renderItems.length; i < il; i ++ ) {
+
+			const renderItem = renderItems[ i ];
+
+			if ( renderItem.id === null ) break;
+
+			renderItem.id = null;
+			renderItem.object = null;
+			renderItem.geometry = null;
+			renderItem.material = null;
+			renderItem.group = null;
+
+		}
+
+	}
+
+	return {
+
+		opaque: opaque,
+		transmissive: transmissive,
+		transparent: transparent,
+
+		init: init,
+		push: push,
+		unshift: unshift,
+		finish: finish,
+
+		sort: sort
+	};
+
+}
+
+function WebGLRenderLists() {
+
+	let lists = new WeakMap();
+
+	function get( scene, renderCallDepth ) {
+
+		const listArray = lists.get( scene );
+		let list;
+
+		if ( listArray === undefined ) {
+
+			list = new WebGLRenderList();
+			lists.set( scene, [ list ] );
+
+		} else {
+
+			if ( renderCallDepth >= listArray.length ) {
+
+				list = new WebGLRenderList();
+				listArray.push( list );
+
+			} else {
+
+				list = listArray[ renderCallDepth ];
+
+			}
+
+		}
+
+		return list;
+
+	}
+
+	function dispose() {
+
+		lists = new WeakMap();
+
+	}
+
+	return {
+		get: get,
+		dispose: dispose
+	};
+
+}
+
+function UniformsCache() {
+
+	const lights = {};
+
+	return {
+
+		get: function ( light ) {
+
+			if ( lights[ light.id ] !== undefined ) {
+
+				return lights[ light.id ];
+
+			}
+
+			let uniforms;
+
+			switch ( light.type ) {
+
+				case 'DirectionalLight':
+					uniforms = {
+						direction: new Vector3(),
+						color: new Color()
+					};
+					break;
+
+				case 'SpotLight':
+					uniforms = {
+						position: new Vector3(),
+						direction: new Vector3(),
+						color: new Color(),
+						distance: 0,
+						coneCos: 0,
+						penumbraCos: 0,
+						decay: 0
+					};
+					break;
+
+				case 'PointLight':
+					uniforms = {
+						position: new Vector3(),
+						color: new Color(),
+						distance: 0,
+						decay: 0
+					};
+					break;
+
+				case 'HemisphereLight':
+					uniforms = {
+						direction: new Vector3(),
+						skyColor: new Color(),
+						groundColor: new Color()
+					};
+					break;
+
+				case 'RectAreaLight':
+					uniforms = {
+						color: new Color(),
+						position: new Vector3(),
+						halfWidth: new Vector3(),
+						halfHeight: new Vector3()
+					};
+					break;
+
+			}
+
+			lights[ light.id ] = uniforms;
+
+			return uniforms;
+
+		}
+
+	};
+
+}
+
+function ShadowUniformsCache() {
+
+	const lights = {};
+
+	return {
+
+		get: function ( light ) {
+
+			if ( lights[ light.id ] !== undefined ) {
+
+				return lights[ light.id ];
+
+			}
+
+			let uniforms;
+
+			switch ( light.type ) {
+
+				case 'DirectionalLight':
+					uniforms = {
+						shadowIntensity: 1,
+						shadowBias: 0,
+						shadowNormalBias: 0,
+						shadowRadius: 1,
+						shadowMapSize: new Vector2()
+					};
+					break;
+
+				case 'SpotLight':
+					uniforms = {
+						shadowIntensity: 1,
+						shadowBias: 0,
+						shadowNormalBias: 0,
+						shadowRadius: 1,
+						shadowMapSize: new Vector2()
+					};
+					break;
+
+				case 'PointLight':
+					uniforms = {
+						shadowIntensity: 1,
+						shadowBias: 0,
+						shadowNormalBias: 0,
+						shadowRadius: 1,
+						shadowMapSize: new Vector2(),
+						shadowCameraNear: 1,
+						shadowCameraFar: 1000
+					};
+					break;
+
+				// TODO (abelnation): set RectAreaLight shadow uniforms
+
+			}
+
+			lights[ light.id ] = uniforms;
+
+			return uniforms;
+
+		}
+
+	};
+
+}
+
+
+
+let nextVersion = 0;
+
+function shadowCastingAndTexturingLightsFirst( lightA, lightB ) {
+
+	return ( lightB.castShadow ? 2 : 0 ) - ( lightA.castShadow ? 2 : 0 ) + ( lightB.map ? 1 : 0 ) - ( lightA.map ? 1 : 0 );
+
+}
+
+function WebGLLights( extensions ) {
+
+	const cache = new UniformsCache();
+
+	const shadowCache = ShadowUniformsCache();
+
+	const state = {
+
+		version: 0,
+
+		hash: {
+			directionalLength: - 1,
+			pointLength: - 1,
+			spotLength: - 1,
+			rectAreaLength: - 1,
+			hemiLength: - 1,
+
+			numDirectionalShadows: - 1,
+			numPointShadows: - 1,
+			numSpotShadows: - 1,
+			numSpotMaps: - 1,
+
+			numLightProbes: - 1
+		},
+
+		ambient: [ 0, 0, 0 ],
+		probe: [],
+		directional: [],
+		directionalShadow: [],
+		directionalShadowMap: [],
+		directionalShadowMatrix: [],
+		spot: [],
+		spotLightMap: [],
+		spotShadow: [],
+		spotShadowMap: [],
+		spotLightMatrix: [],
+		rectArea: [],
+		rectAreaLTC1: null,
+		rectAreaLTC2: null,
+		point: [],
+		pointShadow: [],
+		pointShadowMap: [],
+		pointShadowMatrix: [],
+		hemi: [],
+		numSpotLightShadowsWithMaps: 0,
+		numLightProbes: 0
+
+	};
+
+	for ( let i = 0; i < 9; i ++ ) state.probe.push( new Vector3() );
+
+	const vector3 = new Vector3();
+	const matrix4 = new Matrix4();
+	const matrix42 = new Matrix4();
+
+	function setup( lights ) {
+
+		let r = 0, g = 0, b = 0;
+
+		for ( let i = 0; i < 9; i ++ ) state.probe[ i ].set( 0, 0, 0 );
+
+		let directionalLength = 0;
+		let pointLength = 0;
+		let spotLength = 0;
+		let rectAreaLength = 0;
+		let hemiLength = 0;
+
+		let numDirectionalShadows = 0;
+		let numPointShadows = 0;
+		let numSpotShadows = 0;
+		let numSpotMaps = 0;
+		let numSpotShadowsWithMaps = 0;
+
+		let numLightProbes = 0;
+
+		// ordering : [shadow casting + map texturing, map texturing, shadow casting, none ]
+		lights.sort( shadowCastingAndTexturingLightsFirst );
+
+		for ( let i = 0, l = lights.length; i < l; i ++ ) {
+
+			const light = lights[ i ];
+
+			const color = light.color;
+			const intensity = light.intensity;
+			const distance = light.distance;
+
+			const shadowMap = ( light.shadow && light.shadow.map ) ? light.shadow.map.texture : null;
+
+			if ( light.isAmbientLight ) {
+
+				r += color.r * intensity;
+				g += color.g * intensity;
+				b += color.b * intensity;
+
+			} else if ( light.isLightProbe ) {
+
+				for ( let j = 0; j < 9; j ++ ) {
+
+					state.probe[ j ].addScaledVector( light.sh.coefficients[ j ], intensity );
+
+				}
+
+				numLightProbes ++;
+
+			} else if ( light.isDirectionalLight ) {
+
+				const uniforms = cache.get( light );
+
+				uniforms.color.copy( light.color ).multiplyScalar( light.intensity );
+
+				if ( light.castShadow ) {
+
+					const shadow = light.shadow;
+
+					const shadowUniforms = shadowCache.get( light );
+
+					shadowUniforms.shadowIntensity = shadow.intensity;
+					shadowUniforms.shadowBias = shadow.bias;
+					shadowUniforms.shadowNormalBias = shadow.normalBias;
+					shadowUniforms.shadowRadius = shadow.radius;
+					shadowUniforms.shadowMapSize = shadow.mapSize;
+
+					state.directionalShadow[ directionalLength ] = shadowUniforms;
+					state.directionalShadowMap[ directionalLength ] = shadowMap;
+					state.directionalShadowMatrix[ directionalLength ] = light.shadow.matrix;
+
+					numDirectionalShadows ++;
+
+				}
+
+				state.directional[ directionalLength ] = uniforms;
+
+				directionalLength ++;
+
+			} else if ( light.isSpotLight ) {
+
+				const uniforms = cache.get( light );
+
+				uniforms.position.setFromMatrixPosition( light.matrixWorld );
+
+				uniforms.color.copy( color ).multiplyScalar( intensity );
+				uniforms.distance = distance;
+
+				uniforms.coneCos = Math.cos( light.angle );
+				uniforms.penumbraCos = Math.cos( light.angle * ( 1 - light.penumbra ) );
+				uniforms.decay = light.decay;
+
+				state.spot[ spotLength ] = uniforms;
+
+				const shadow = light.shadow;
+
+				if ( light.map ) {
+
+					state.spotLightMap[ numSpotMaps ] = light.map;
+					numSpotMaps ++;
+
+					// make sure the lightMatrix is up to date
+					// TODO : do it if required only
+					shadow.updateMatrices( light );
+
+					if ( light.castShadow ) numSpotShadowsWithMaps ++;
+
+				}
+
+				state.spotLightMatrix[ spotLength ] = shadow.matrix;
+
+				if ( light.castShadow ) {
+
+					const shadowUniforms = shadowCache.get( light );
+
+					shadowUniforms.shadowIntensity = shadow.intensity;
+					shadowUniforms.shadowBias = shadow.bias;
+					shadowUniforms.shadowNormalBias = shadow.normalBias;
+					shadowUniforms.shadowRadius = shadow.radius;
+					shadowUniforms.shadowMapSize = shadow.mapSize;
+
+					state.spotShadow[ spotLength ] = shadowUniforms;
+					state.spotShadowMap[ spotLength ] = shadowMap;
+
+					numSpotShadows ++;
+
+				}
+
+				spotLength ++;
+
+			} else if ( light.isRectAreaLight ) {
+
+				const uniforms = cache.get( light );
+
+				uniforms.color.copy( color ).multiplyScalar( intensity );
+
+				uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
+				uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );
+
+				state.rectArea[ rectAreaLength ] = uniforms;
+
+				rectAreaLength ++;
+
+			} else if ( light.isPointLight ) {
+
+				const uniforms = cache.get( light );
+
+				uniforms.color.copy( light.color ).multiplyScalar( light.intensity );
+				uniforms.distance = light.distance;
+				uniforms.decay = light.decay;
+
+				if ( light.castShadow ) {
+
+					const shadow = light.shadow;
+
+					const shadowUniforms = shadowCache.get( light );
+
+					shadowUniforms.shadowIntensity = shadow.intensity;
+					shadowUniforms.shadowBias = shadow.bias;
+					shadowUniforms.shadowNormalBias = shadow.normalBias;
+					shadowUniforms.shadowRadius = shadow.radius;
+					shadowUniforms.shadowMapSize = shadow.mapSize;
+					shadowUniforms.shadowCameraNear = shadow.camera.near;
+					shadowUniforms.shadowCameraFar = shadow.camera.far;
+
+					state.pointShadow[ pointLength ] = shadowUniforms;
+					state.pointShadowMap[ pointLength ] = shadowMap;
+					state.pointShadowMatrix[ pointLength ] = light.shadow.matrix;
+
+					numPointShadows ++;
+
+				}
+
+				state.point[ pointLength ] = uniforms;
+
+				pointLength ++;
+
+			} else if ( light.isHemisphereLight ) {
+
+				const uniforms = cache.get( light );
+
+				uniforms.skyColor.copy( light.color ).multiplyScalar( intensity );
+				uniforms.groundColor.copy( light.groundColor ).multiplyScalar( intensity );
+
+				state.hemi[ hemiLength ] = uniforms;
+
+				hemiLength ++;
+
+			}
+
+		}
+
+		if ( rectAreaLength > 0 ) {
+
+			if ( extensions.has( 'OES_texture_float_linear' ) === true ) {
+
+				state.rectAreaLTC1 = UniformsLib.LTC_FLOAT_1;
+				state.rectAreaLTC2 = UniformsLib.LTC_FLOAT_2;
+
+			} else {
+
+				state.rectAreaLTC1 = UniformsLib.LTC_HALF_1;
+				state.rectAreaLTC2 = UniformsLib.LTC_HALF_2;
+
+			}
+
+		}
+
+		state.ambient[ 0 ] = r;
+		state.ambient[ 1 ] = g;
+		state.ambient[ 2 ] = b;
+
+		const hash = state.hash;
+
+		if ( hash.directionalLength !== directionalLength ||
+			hash.pointLength !== pointLength ||
+			hash.spotLength !== spotLength ||
+			hash.rectAreaLength !== rectAreaLength ||
+			hash.hemiLength !== hemiLength ||
+			hash.numDirectionalShadows !== numDirectionalShadows ||
+			hash.numPointShadows !== numPointShadows ||
+			hash.numSpotShadows !== numSpotShadows ||
+			hash.numSpotMaps !== numSpotMaps ||
+			hash.numLightProbes !== numLightProbes ) {
+
+			state.directional.length = directionalLength;
+			state.spot.length = spotLength;
+			state.rectArea.length = rectAreaLength;
+			state.point.length = pointLength;
+			state.hemi.length = hemiLength;
+
+			state.directionalShadow.length = numDirectionalShadows;
+			state.directionalShadowMap.length = numDirectionalShadows;
+			state.pointShadow.length = numPointShadows;
+			state.pointShadowMap.length = numPointShadows;
+			state.spotShadow.length = numSpotShadows;
+			state.spotShadowMap.length = numSpotShadows;
+			state.directionalShadowMatrix.length = numDirectionalShadows;
+			state.pointShadowMatrix.length = numPointShadows;
+			state.spotLightMatrix.length = numSpotShadows + numSpotMaps - numSpotShadowsWithMaps;
+			state.spotLightMap.length = numSpotMaps;
+			state.numSpotLightShadowsWithMaps = numSpotShadowsWithMaps;
+			state.numLightProbes = numLightProbes;
+
+			hash.directionalLength = directionalLength;
+			hash.pointLength = pointLength;
+			hash.spotLength = spotLength;
+			hash.rectAreaLength = rectAreaLength;
+			hash.hemiLength = hemiLength;
+
+			hash.numDirectionalShadows = numDirectionalShadows;
+			hash.numPointShadows = numPointShadows;
+			hash.numSpotShadows = numSpotShadows;
+			hash.numSpotMaps = numSpotMaps;
+
+			hash.numLightProbes = numLightProbes;
+
+			state.version = nextVersion ++;
+
+		}
+
+	}
+
+	function setupView( lights, camera ) {
+
+		let directionalLength = 0;
+		let pointLength = 0;
+		let spotLength = 0;
+		let rectAreaLength = 0;
+		let hemiLength = 0;
+
+		const viewMatrix = camera.matrixWorldInverse;
+
+		for ( let i = 0, l = lights.length; i < l; i ++ ) {
+
+			const light = lights[ i ];
+
+			if ( light.isDirectionalLight ) {
+
+				const uniforms = state.directional[ directionalLength ];
+
+				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
+				vector3.setFromMatrixPosition( light.target.matrixWorld );
+				uniforms.direction.sub( vector3 );
+				uniforms.direction.transformDirection( viewMatrix );
+
+				directionalLength ++;
+
+			} else if ( light.isSpotLight ) {
+
+				const uniforms = state.spot[ spotLength ];
+
+				uniforms.position.setFromMatrixPosition( light.matrixWorld );
+				uniforms.position.applyMatrix4( viewMatrix );
+
+				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
+				vector3.setFromMatrixPosition( light.target.matrixWorld );
+				uniforms.direction.sub( vector3 );
+				uniforms.direction.transformDirection( viewMatrix );
+
+				spotLength ++;
+
+			} else if ( light.isRectAreaLight ) {
+
+				const uniforms = state.rectArea[ rectAreaLength ];
+
+				uniforms.position.setFromMatrixPosition( light.matrixWorld );
+				uniforms.position.applyMatrix4( viewMatrix );
+
+				// extract local rotation of light to derive width/height half vectors
+				matrix42.identity();
+				matrix4.copy( light.matrixWorld );
+				matrix4.premultiply( viewMatrix );
+				matrix42.extractRotation( matrix4 );
+
+				uniforms.halfWidth.set( light.width * 0.5, 0.0, 0.0 );
+				uniforms.halfHeight.set( 0.0, light.height * 0.5, 0.0 );
+
+				uniforms.halfWidth.applyMatrix4( matrix42 );
+				uniforms.halfHeight.applyMatrix4( matrix42 );
+
+				rectAreaLength ++;
+
+			} else if ( light.isPointLight ) {
+
+				const uniforms = state.point[ pointLength ];
+
+				uniforms.position.setFromMatrixPosition( light.matrixWorld );
+				uniforms.position.applyMatrix4( viewMatrix );
+
+				pointLength ++;
+
+			} else if ( light.isHemisphereLight ) {
+
+				const uniforms = state.hemi[ hemiLength ];
+
+				uniforms.direction.setFromMatrixPosition( light.matrixWorld );
+				uniforms.direction.transformDirection( viewMatrix );
+
+				hemiLength ++;
+
+			}
+
+		}
+
+	}
+
+	return {
+		setup: setup,
+		setupView: setupView,
+		state: state
+	};
+
+}
+
+function WebGLRenderState( extensions ) {
+
+	const lights = new WebGLLights( extensions );
+
+	const lightsArray = [];
+	const shadowsArray = [];
+
+	function init( camera ) {
+
+		state.camera = camera;
+
+		lightsArray.length = 0;
+		shadowsArray.length = 0;
+
+	}
+
+	function pushLight( light ) {
+
+		lightsArray.push( light );
+
+	}
+
+	function pushShadow( shadowLight ) {
+
+		shadowsArray.push( shadowLight );
+
+	}
+
+	function setupLights() {
+
+		lights.setup( lightsArray );
+
+	}
+
+	function setupLightsView( camera ) {
+
+		lights.setupView( lightsArray, camera );
+
+	}
+
+	const state = {
+		lightsArray: lightsArray,
+		shadowsArray: shadowsArray,
+
+		camera: null,
+
+		lights: lights,
+
+		transmissionRenderTarget: {}
+	};
+
+	return {
+		init: init,
+		state: state,
+		setupLights: setupLights,
+		setupLightsView: setupLightsView,
+
+		pushLight: pushLight,
+		pushShadow: pushShadow
+	};
+
+}
+
+function WebGLRenderStates( extensions ) {
+
+	let renderStates = new WeakMap();
+
+	function get( scene, renderCallDepth = 0 ) {
+
+		const renderStateArray = renderStates.get( scene );
+		let renderState;
+
+		if ( renderStateArray === undefined ) {
+
+			renderState = new WebGLRenderState( extensions );
+			renderStates.set( scene, [ renderState ] );
+
+		} else {
+
+			if ( renderCallDepth >= renderStateArray.length ) {
+
+				renderState = new WebGLRenderState( extensions );
+				renderStateArray.push( renderState );
+
+			} else {
+
+				renderState = renderStateArray[ renderCallDepth ];
+
+			}
+
+		}
+
+		return renderState;
+
+	}
+
+	function dispose() {
+
+		renderStates = new WeakMap();
+
+	}
+
+	return {
+		get: get,
+		dispose: dispose
+	};
+
+}
+
+class MeshDepthMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshDepthMaterial = true;
+
+		this.type = 'MeshDepthMaterial';
+
+		this.depthPacking = BasicDepthPacking;
+
+		this.map = null;
+
+		this.alphaMap = null;
+
+		this.displacementMap = null;
+		this.displacementScale = 1;
+		this.displacementBias = 0;
+
+		this.wireframe = false;
+		this.wireframeLinewidth = 1;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.depthPacking = source.depthPacking;
+
+		this.map = source.map;
+
+		this.alphaMap = source.alphaMap;
+
+		this.displacementMap = source.displacementMap;
+		this.displacementScale = source.displacementScale;
+		this.displacementBias = source.displacementBias;
+
+		this.wireframe = source.wireframe;
+		this.wireframeLinewidth = source.wireframeLinewidth;
+
+		return this;
+
+	}
+
+}
+
+class MeshDistanceMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshDistanceMaterial = true;
+
+		this.type = 'MeshDistanceMaterial';
+
+		this.map = null;
+
+		this.alphaMap = null;
+
+		this.displacementMap = null;
+		this.displacementScale = 1;
+		this.displacementBias = 0;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.map = source.map;
+
+		this.alphaMap = source.alphaMap;
+
+		this.displacementMap = source.displacementMap;
+		this.displacementScale = source.displacementScale;
+		this.displacementBias = source.displacementBias;
+
+		return this;
+
+	}
+
+}
+
+const vertex = "void main() {\n\tgl_Position = vec4( position, 1.0 );\n}";
+
+const fragment = "uniform sampler2D shadow_pass;\nuniform vec2 resolution;\nuniform float radius;\n#include <packing>\nvoid main() {\n\tconst float samples = float( VSM_SAMPLES );\n\tfloat mean = 0.0;\n\tfloat squared_mean = 0.0;\n\tfloat uvStride = samples <= 1.0 ? 0.0 : 2.0 / ( samples - 1.0 );\n\tfloat uvStart = samples <= 1.0 ? 0.0 : - 1.0;\n\tfor ( float i = 0.0; i < samples; i ++ ) {\n\t\tfloat uvOffset = uvStart + i * uvStride;\n\t\t#ifdef HORIZONTAL_PASS\n\t\t\tvec2 distribution = unpackRGBATo2Half( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( uvOffset, 0.0 ) * radius ) / resolution ) );\n\t\t\tmean += distribution.x;\n\t\t\tsquared_mean += distribution.y * distribution.y + distribution.x * distribution.x;\n\t\t#else\n\t\t\tfloat depth = unpackRGBAToDepth( texture2D( shadow_pass, ( gl_FragCoord.xy + vec2( 0.0, uvOffset ) * radius ) / resolution ) );\n\t\t\tmean += depth;\n\t\t\tsquared_mean += depth * depth;\n\t\t#endif\n\t}\n\tmean = mean / samples;\n\tsquared_mean = squared_mean / samples;\n\tfloat std_dev = sqrt( squared_mean - mean * mean );\n\tgl_FragColor = pack2HalfToRGBA( vec2( mean, std_dev ) );\n}";
+
+function WebGLShadowMap( renderer, objects, capabilities ) {
+
+	let _frustum = new Frustum();
+
+	const _shadowMapSize = new Vector2(),
+		_viewportSize = new Vector2(),
+
+		_viewport = new Vector4(),
+
+		_depthMaterial = new MeshDepthMaterial( { depthPacking: RGBADepthPacking } ),
+		_distanceMaterial = new MeshDistanceMaterial(),
+
+		_materialCache = {},
+
+		_maxTextureSize = capabilities.maxTextureSize;
+
+	const shadowSide = { [ FrontSide ]: BackSide, [ BackSide ]: FrontSide, [ DoubleSide ]: DoubleSide };
+
+	const shadowMaterialVertical = new ShaderMaterial( {
+		defines: {
+			VSM_SAMPLES: 8
+		},
+		uniforms: {
+			shadow_pass: { value: null },
+			resolution: { value: new Vector2() },
+			radius: { value: 4.0 }
+		},
+
+		vertexShader: vertex,
+		fragmentShader: fragment
+
+	} );
+
+	const shadowMaterialHorizontal = shadowMaterialVertical.clone();
+	shadowMaterialHorizontal.defines.HORIZONTAL_PASS = 1;
+
+	const fullScreenTri = new BufferGeometry();
+	fullScreenTri.setAttribute(
+		'position',
+		new BufferAttribute(
+			new Float32Array( [ - 1, - 1, 0.5, 3, - 1, 0.5, - 1, 3, 0.5 ] ),
+			3
+		)
+	);
+
+	const fullScreenMesh = new Mesh( fullScreenTri, shadowMaterialVertical );
+
+	const scope = this;
+
+	this.enabled = false;
+
+	this.autoUpdate = true;
+	this.needsUpdate = false;
+
+	this.type = PCFShadowMap;
+	let _previousType = this.type;
+
+	this.render = function ( lights, scene, camera ) {
+
+		if ( scope.enabled === false ) return;
+		if ( scope.autoUpdate === false && scope.needsUpdate === false ) return;
+
+		if ( lights.length === 0 ) return;
+
+		const currentRenderTarget = renderer.getRenderTarget();
+		const activeCubeFace = renderer.getActiveCubeFace();
+		const activeMipmapLevel = renderer.getActiveMipmapLevel();
+
+		const _state = renderer.state;
+
+		// Set GL state for depth map.
+		_state.setBlending( NoBlending );
+		_state.buffers.color.setClear( 1, 1, 1, 1 );
+		_state.buffers.depth.setTest( true );
+		_state.setScissorTest( false );
+
+		// check for shadow map type changes
+
+		const toVSM = ( _previousType !== VSMShadowMap && this.type === VSMShadowMap );
+		const fromVSM = ( _previousType === VSMShadowMap && this.type !== VSMShadowMap );
+
+		// render depth map
+
+		for ( let i = 0, il = lights.length; i < il; i ++ ) {
+
+			const light = lights[ i ];
+			const shadow = light.shadow;
+
+			if ( shadow === undefined ) {
+
+				console.warn( 'THREE.WebGLShadowMap:', light, 'has no shadow.' );
+				continue;
+
+			}
+
+			if ( shadow.autoUpdate === false && shadow.needsUpdate === false ) continue;
+
+			_shadowMapSize.copy( shadow.mapSize );
+
+			const shadowFrameExtents = shadow.getFrameExtents();
+
+			_shadowMapSize.multiply( shadowFrameExtents );
+
+			_viewportSize.copy( shadow.mapSize );
+
+			if ( _shadowMapSize.x > _maxTextureSize || _shadowMapSize.y > _maxTextureSize ) {
+
+				if ( _shadowMapSize.x > _maxTextureSize ) {
+
+					_viewportSize.x = Math.floor( _maxTextureSize / shadowFrameExtents.x );
+					_shadowMapSize.x = _viewportSize.x * shadowFrameExtents.x;
+					shadow.mapSize.x = _viewportSize.x;
+
+				}
+
+				if ( _shadowMapSize.y > _maxTextureSize ) {
+
+					_viewportSize.y = Math.floor( _maxTextureSize / shadowFrameExtents.y );
+					_shadowMapSize.y = _viewportSize.y * shadowFrameExtents.y;
+					shadow.mapSize.y = _viewportSize.y;
+
+				}
+
+			}
+
+			if ( shadow.map === null || toVSM === true || fromVSM === true ) {
+
+				const pars = ( this.type !== VSMShadowMap ) ? { minFilter: NearestFilter, magFilter: NearestFilter } : {};
+
+				if ( shadow.map !== null ) {
+
+					shadow.map.dispose();
+
+				}
+
+				shadow.map = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y, pars );
+				shadow.map.texture.name = light.name + '.shadowMap';
+
+				shadow.camera.updateProjectionMatrix();
+
+			}
+
+			renderer.setRenderTarget( shadow.map );
+			renderer.clear();
+
+			const viewportCount = shadow.getViewportCount();
+
+			for ( let vp = 0; vp < viewportCount; vp ++ ) {
+
+				const viewport = shadow.getViewport( vp );
+
+				_viewport.set(
+					_viewportSize.x * viewport.x,
+					_viewportSize.y * viewport.y,
+					_viewportSize.x * viewport.z,
+					_viewportSize.y * viewport.w
+				);
+
+				_state.viewport( _viewport );
+
+				shadow.updateMatrices( light, vp );
+
+				_frustum = shadow.getFrustum();
+
+				renderObject( scene, camera, shadow.camera, light, this.type );
+
+			}
+
+			// do blur pass for VSM
+
+			if ( shadow.isPointLightShadow !== true && this.type === VSMShadowMap ) {
+
+				VSMPass( shadow, camera );
+
+			}
+
+			shadow.needsUpdate = false;
+
+		}
+
+		_previousType = this.type;
+
+		scope.needsUpdate = false;
+
+		renderer.setRenderTarget( currentRenderTarget, activeCubeFace, activeMipmapLevel );
+
+	};
+
+	function VSMPass( shadow, camera ) {
+
+		const geometry = objects.update( fullScreenMesh );
+
+		if ( shadowMaterialVertical.defines.VSM_SAMPLES !== shadow.blurSamples ) {
+
+			shadowMaterialVertical.defines.VSM_SAMPLES = shadow.blurSamples;
+			shadowMaterialHorizontal.defines.VSM_SAMPLES = shadow.blurSamples;
+
+			shadowMaterialVertical.needsUpdate = true;
+			shadowMaterialHorizontal.needsUpdate = true;
+
+		}
+
+		if ( shadow.mapPass === null ) {
+
+			shadow.mapPass = new WebGLRenderTarget( _shadowMapSize.x, _shadowMapSize.y );
+
+		}
+
+		// vertical pass
+
+		shadowMaterialVertical.uniforms.shadow_pass.value = shadow.map.texture;
+		shadowMaterialVertical.uniforms.resolution.value = shadow.mapSize;
+		shadowMaterialVertical.uniforms.radius.value = shadow.radius;
+		renderer.setRenderTarget( shadow.mapPass );
+		renderer.clear();
+		renderer.renderBufferDirect( camera, null, geometry, shadowMaterialVertical, fullScreenMesh, null );
+
+		// horizontal pass
+
+		shadowMaterialHorizontal.uniforms.shadow_pass.value = shadow.mapPass.texture;
+		shadowMaterialHorizontal.uniforms.resolution.value = shadow.mapSize;
+		shadowMaterialHorizontal.uniforms.radius.value = shadow.radius;
+		renderer.setRenderTarget( shadow.map );
+		renderer.clear();
+		renderer.renderBufferDirect( camera, null, geometry, shadowMaterialHorizontal, fullScreenMesh, null );
+
+	}
+
+	function getDepthMaterial( object, material, light, type ) {
+
+		let result = null;
+
+		const customMaterial = ( light.isPointLight === true ) ? object.customDistanceMaterial : object.customDepthMaterial;
+
+		if ( customMaterial !== undefined ) {
+
+			result = customMaterial;
+
+		} else {
+
+			result = ( light.isPointLight === true ) ? _distanceMaterial : _depthMaterial;
+
+			if ( ( renderer.localClippingEnabled && material.clipShadows === true && Array.isArray( material.clippingPlanes ) && material.clippingPlanes.length !== 0 ) ||
+				( material.displacementMap && material.displacementScale !== 0 ) ||
+				( material.alphaMap && material.alphaTest > 0 ) ||
+				( material.map && material.alphaTest > 0 ) ) {
+
+				// in this case we need a unique material instance reflecting the
+				// appropriate state
+
+				const keyA = result.uuid, keyB = material.uuid;
+
+				let materialsForVariant = _materialCache[ keyA ];
+
+				if ( materialsForVariant === undefined ) {
+
+					materialsForVariant = {};
+					_materialCache[ keyA ] = materialsForVariant;
+
+				}
+
+				let cachedMaterial = materialsForVariant[ keyB ];
+
+				if ( cachedMaterial === undefined ) {
+
+					cachedMaterial = result.clone();
+					materialsForVariant[ keyB ] = cachedMaterial;
+					material.addEventListener( 'dispose', onMaterialDispose );
+
+				}
+
+				result = cachedMaterial;
+
+			}
+
+		}
+
+		result.visible = material.visible;
+		result.wireframe = material.wireframe;
+
+		if ( type === VSMShadowMap ) {
+
+			result.side = ( material.shadowSide !== null ) ? material.shadowSide : material.side;
+
+		} else {
+
+			result.side = ( material.shadowSide !== null ) ? material.shadowSide : shadowSide[ material.side ];
+
+		}
+
+		result.alphaMap = material.alphaMap;
+		result.alphaTest = material.alphaTest;
+		result.map = material.map;
+
+		result.clipShadows = material.clipShadows;
+		result.clippingPlanes = material.clippingPlanes;
+		result.clipIntersection = material.clipIntersection;
+
+		result.displacementMap = material.displacementMap;
+		result.displacementScale = material.displacementScale;
+		result.displacementBias = material.displacementBias;
+
+		result.wireframeLinewidth = material.wireframeLinewidth;
+		result.linewidth = material.linewidth;
+
+		if ( light.isPointLight === true && result.isMeshDistanceMaterial === true ) {
+
+			const materialProperties = renderer.properties.get( result );
+			materialProperties.light = light;
+
+		}
+
+		return result;
+
+	}
+
+	function renderObject( object, camera, shadowCamera, light, type ) {
+
+		if ( object.visible === false ) return;
+
+		const visible = object.layers.test( camera.layers );
+
+		if ( visible && ( object.isMesh || object.isLine || object.isPoints ) ) {
+
+			if ( ( object.castShadow || ( object.receiveShadow && type === VSMShadowMap ) ) && ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) ) {
+
+				object.modelViewMatrix.multiplyMatrices( shadowCamera.matrixWorldInverse, object.matrixWorld );
+
+				const geometry = objects.update( object );
+				const material = object.material;
+
+				if ( Array.isArray( material ) ) {
+
+					const groups = geometry.groups;
+
+					for ( let k = 0, kl = groups.length; k < kl; k ++ ) {
+
+						const group = groups[ k ];
+						const groupMaterial = material[ group.materialIndex ];
+
+						if ( groupMaterial && groupMaterial.visible ) {
+
+							const depthMaterial = getDepthMaterial( object, groupMaterial, light, type );
+
+							object.onBeforeShadow( renderer, object, camera, shadowCamera, geometry, depthMaterial, group );
+
+							renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, group );
+
+							object.onAfterShadow( renderer, object, camera, shadowCamera, geometry, depthMaterial, group );
+
+						}
+
+					}
+
+				} else if ( material.visible ) {
+
+					const depthMaterial = getDepthMaterial( object, material, light, type );
+
+					object.onBeforeShadow( renderer, object, camera, shadowCamera, geometry, depthMaterial, null );
+
+					renderer.renderBufferDirect( shadowCamera, null, geometry, depthMaterial, object, null );
+
+					object.onAfterShadow( renderer, object, camera, shadowCamera, geometry, depthMaterial, null );
+
+				}
+
+			}
+
+		}
+
+		const children = object.children;
+
+		for ( let i = 0, l = children.length; i < l; i ++ ) {
+
+			renderObject( children[ i ], camera, shadowCamera, light, type );
+
+		}
+
+	}
+
+	function onMaterialDispose( event ) {
+
+		const material = event.target;
+
+		material.removeEventListener( 'dispose', onMaterialDispose );
+
+		// make sure to remove the unique distance/depth materials used for shadow map rendering
+
+		for ( const id in _materialCache ) {
+
+			const cache = _materialCache[ id ];
+
+			const uuid = event.target.uuid;
+
+			if ( uuid in cache ) {
+
+				const shadowMaterial = cache[ uuid ];
+				shadowMaterial.dispose();
+				delete cache[ uuid ];
+
+			}
+
+		}
+
+	}
+
+}
+
+function WebGLState( gl ) {
+
+	function ColorBuffer() {
+
+		let locked = false;
+
+		const color = new Vector4();
+		let currentColorMask = null;
+		const currentColorClear = new Vector4( 0, 0, 0, 0 );
+
+		return {
+
+			setMask: function ( colorMask ) {
+
+				if ( currentColorMask !== colorMask && ! locked ) {
+
+					gl.colorMask( colorMask, colorMask, colorMask, colorMask );
+					currentColorMask = colorMask;
+
+				}
+
+			},
+
+			setLocked: function ( lock ) {
+
+				locked = lock;
+
+			},
+
+			setClear: function ( r, g, b, a, premultipliedAlpha ) {
+
+				if ( premultipliedAlpha === true ) {
+
+					r *= a; g *= a; b *= a;
+
+				}
+
+				color.set( r, g, b, a );
+
+				if ( currentColorClear.equals( color ) === false ) {
+
+					gl.clearColor( r, g, b, a );
+					currentColorClear.copy( color );
+
+				}
+
+			},
+
+			reset: function () {
+
+				locked = false;
+
+				currentColorMask = null;
+				currentColorClear.set( - 1, 0, 0, 0 ); // set to invalid state
+
+			}
+
+		};
+
+	}
+
+	function DepthBuffer() {
+
+		let locked = false;
+
+		let currentDepthMask = null;
+		let currentDepthFunc = null;
+		let currentDepthClear = null;
+
+		return {
+
+			setTest: function ( depthTest ) {
+
+				if ( depthTest ) {
+
+					enable( gl.DEPTH_TEST );
+
+				} else {
+
+					disable( gl.DEPTH_TEST );
+
+				}
+
+			},
+
+			setMask: function ( depthMask ) {
+
+				if ( currentDepthMask !== depthMask && ! locked ) {
+
+					gl.depthMask( depthMask );
+					currentDepthMask = depthMask;
+
+				}
+
+			},
+
+			setFunc: function ( depthFunc ) {
+
+				if ( currentDepthFunc !== depthFunc ) {
+
+					switch ( depthFunc ) {
+
+						case NeverDepth:
+
+							gl.depthFunc( gl.NEVER );
+							break;
+
+						case AlwaysDepth:
+
+							gl.depthFunc( gl.ALWAYS );
+							break;
+
+						case LessDepth:
+
+							gl.depthFunc( gl.LESS );
+							break;
+
+						case LessEqualDepth:
+
+							gl.depthFunc( gl.LEQUAL );
+							break;
+
+						case EqualDepth:
+
+							gl.depthFunc( gl.EQUAL );
+							break;
+
+						case GreaterEqualDepth:
+
+							gl.depthFunc( gl.GEQUAL );
+							break;
+
+						case GreaterDepth:
+
+							gl.depthFunc( gl.GREATER );
+							break;
+
+						case NotEqualDepth:
+
+							gl.depthFunc( gl.NOTEQUAL );
+							break;
+
+						default:
+
+							gl.depthFunc( gl.LEQUAL );
+
+					}
+
+					currentDepthFunc = depthFunc;
+
+				}
+
+			},
+
+			setLocked: function ( lock ) {
+
+				locked = lock;
+
+			},
+
+			setClear: function ( depth ) {
+
+				if ( currentDepthClear !== depth ) {
+
+					gl.clearDepth( depth );
+					currentDepthClear = depth;
+
+				}
+
+			},
+
+			reset: function () {
+
+				locked = false;
+
+				currentDepthMask = null;
+				currentDepthFunc = null;
+				currentDepthClear = null;
+
+			}
+
+		};
+
+	}
+
+	function StencilBuffer() {
+
+		let locked = false;
+
+		let currentStencilMask = null;
+		let currentStencilFunc = null;
+		let currentStencilRef = null;
+		let currentStencilFuncMask = null;
+		let currentStencilFail = null;
+		let currentStencilZFail = null;
+		let currentStencilZPass = null;
+		let currentStencilClear = null;
+
+		return {
+
+			setTest: function ( stencilTest ) {
+
+				if ( ! locked ) {
+
+					if ( stencilTest ) {
+
+						enable( gl.STENCIL_TEST );
+
+					} else {
+
+						disable( gl.STENCIL_TEST );
+
+					}
+
+				}
+
+			},
+
+			setMask: function ( stencilMask ) {
+
+				if ( currentStencilMask !== stencilMask && ! locked ) {
+
+					gl.stencilMask( stencilMask );
+					currentStencilMask = stencilMask;
+
+				}
+
+			},
+
+			setFunc: function ( stencilFunc, stencilRef, stencilMask ) {
+
+				if ( currentStencilFunc !== stencilFunc ||
+				     currentStencilRef !== stencilRef ||
+				     currentStencilFuncMask !== stencilMask ) {
+
+					gl.stencilFunc( stencilFunc, stencilRef, stencilMask );
+
+					currentStencilFunc = stencilFunc;
+					currentStencilRef = stencilRef;
+					currentStencilFuncMask = stencilMask;
+
+				}
+
+			},
+
+			setOp: function ( stencilFail, stencilZFail, stencilZPass ) {
+
+				if ( currentStencilFail !== stencilFail ||
+				     currentStencilZFail !== stencilZFail ||
+				     currentStencilZPass !== stencilZPass ) {
+
+					gl.stencilOp( stencilFail, stencilZFail, stencilZPass );
+
+					currentStencilFail = stencilFail;
+					currentStencilZFail = stencilZFail;
+					currentStencilZPass = stencilZPass;
+
+				}
+
+			},
+
+			setLocked: function ( lock ) {
+
+				locked = lock;
+
+			},
+
+			setClear: function ( stencil ) {
+
+				if ( currentStencilClear !== stencil ) {
+
+					gl.clearStencil( stencil );
+					currentStencilClear = stencil;
+
+				}
+
+			},
+
+			reset: function () {
+
+				locked = false;
+
+				currentStencilMask = null;
+				currentStencilFunc = null;
+				currentStencilRef = null;
+				currentStencilFuncMask = null;
+				currentStencilFail = null;
+				currentStencilZFail = null;
+				currentStencilZPass = null;
+				currentStencilClear = null;
+
+			}
+
+		};
+
+	}
+
+	//
+
+	const colorBuffer = new ColorBuffer();
+	const depthBuffer = new DepthBuffer();
+	const stencilBuffer = new StencilBuffer();
+
+	const uboBindings = new WeakMap();
+	const uboProgramMap = new WeakMap();
+
+	let enabledCapabilities = {};
+
+	let currentBoundFramebuffers = {};
+	let currentDrawbuffers = new WeakMap();
+	let defaultDrawbuffers = [];
+
+	let currentProgram = null;
+
+	let currentBlendingEnabled = false;
+	let currentBlending = null;
+	let currentBlendEquation = null;
+	let currentBlendSrc = null;
+	let currentBlendDst = null;
+	let currentBlendEquationAlpha = null;
+	let currentBlendSrcAlpha = null;
+	let currentBlendDstAlpha = null;
+	let currentBlendColor = new Color( 0, 0, 0 );
+	let currentBlendAlpha = 0;
+	let currentPremultipledAlpha = false;
+
+	let currentFlipSided = null;
+	let currentCullFace = null;
+
+	let currentLineWidth = null;
+
+	let currentPolygonOffsetFactor = null;
+	let currentPolygonOffsetUnits = null;
+
+	const maxTextures = gl.getParameter( gl.MAX_COMBINED_TEXTURE_IMAGE_UNITS );
+
+	let lineWidthAvailable = false;
+	let version = 0;
+	const glVersion = gl.getParameter( gl.VERSION );
+
+	if ( glVersion.indexOf( 'WebGL' ) !== - 1 ) {
+
+		version = parseFloat( /^WebGL (\d)/.exec( glVersion )[ 1 ] );
+		lineWidthAvailable = ( version >= 1.0 );
+
+	} else if ( glVersion.indexOf( 'OpenGL ES' ) !== - 1 ) {
+
+		version = parseFloat( /^OpenGL ES (\d)/.exec( glVersion )[ 1 ] );
+		lineWidthAvailable = ( version >= 2.0 );
+
+	}
+
+	let currentTextureSlot = null;
+	let currentBoundTextures = {};
+
+	const scissorParam = gl.getParameter( gl.SCISSOR_BOX );
+	const viewportParam = gl.getParameter( gl.VIEWPORT );
+
+	const currentScissor = new Vector4().fromArray( scissorParam );
+	const currentViewport = new Vector4().fromArray( viewportParam );
+
+	function createTexture( type, target, count, dimensions ) {
+
+		const data = new Uint8Array( 4 ); // 4 is required to match default unpack alignment of 4.
+		const texture = gl.createTexture();
+
+		gl.bindTexture( type, texture );
+		gl.texParameteri( type, gl.TEXTURE_MIN_FILTER, gl.NEAREST );
+		gl.texParameteri( type, gl.TEXTURE_MAG_FILTER, gl.NEAREST );
+
+		for ( let i = 0; i < count; i ++ ) {
+
+			if ( type === gl.TEXTURE_3D || type === gl.TEXTURE_2D_ARRAY ) {
+
+				gl.texImage3D( target, 0, gl.RGBA, 1, 1, dimensions, 0, gl.RGBA, gl.UNSIGNED_BYTE, data );
+
+			} else {
+
+				gl.texImage2D( target + i, 0, gl.RGBA, 1, 1, 0, gl.RGBA, gl.UNSIGNED_BYTE, data );
+
+			}
+
+		}
+
+		return texture;
+
+	}
+
+	const emptyTextures = {};
+	emptyTextures[ gl.TEXTURE_2D ] = createTexture( gl.TEXTURE_2D, gl.TEXTURE_2D, 1 );
+	emptyTextures[ gl.TEXTURE_CUBE_MAP ] = createTexture( gl.TEXTURE_CUBE_MAP, gl.TEXTURE_CUBE_MAP_POSITIVE_X, 6 );
+	emptyTextures[ gl.TEXTURE_2D_ARRAY ] = createTexture( gl.TEXTURE_2D_ARRAY, gl.TEXTURE_2D_ARRAY, 1, 1 );
+	emptyTextures[ gl.TEXTURE_3D ] = createTexture( gl.TEXTURE_3D, gl.TEXTURE_3D, 1, 1 );
+
+	// init
+
+	colorBuffer.setClear( 0, 0, 0, 1 );
+	depthBuffer.setClear( 1 );
+	stencilBuffer.setClear( 0 );
+
+	enable( gl.DEPTH_TEST );
+	depthBuffer.setFunc( LessEqualDepth );
+
+	setFlipSided( false );
+	setCullFace( CullFaceBack );
+	enable( gl.CULL_FACE );
+
+	setBlending( NoBlending );
+
+	//
+
+	function enable( id ) {
+
+		if ( enabledCapabilities[ id ] !== true ) {
+
+			gl.enable( id );
+			enabledCapabilities[ id ] = true;
+
+		}
+
+	}
+
+	function disable( id ) {
+
+		if ( enabledCapabilities[ id ] !== false ) {
+
+			gl.disable( id );
+			enabledCapabilities[ id ] = false;
+
+		}
+
+	}
+
+	function bindFramebuffer( target, framebuffer ) {
+
+		if ( currentBoundFramebuffers[ target ] !== framebuffer ) {
+
+			gl.bindFramebuffer( target, framebuffer );
+
+			currentBoundFramebuffers[ target ] = framebuffer;
+
+			// gl.DRAW_FRAMEBUFFER is equivalent to gl.FRAMEBUFFER
+
+			if ( target === gl.DRAW_FRAMEBUFFER ) {
+
+				currentBoundFramebuffers[ gl.FRAMEBUFFER ] = framebuffer;
+
+			}
+
+			if ( target === gl.FRAMEBUFFER ) {
+
+				currentBoundFramebuffers[ gl.DRAW_FRAMEBUFFER ] = framebuffer;
+
+			}
+
+			return true;
+
+		}
+
+		return false;
+
+	}
+
+	function drawBuffers( renderTarget, framebuffer ) {
+
+		let drawBuffers = defaultDrawbuffers;
+
+		let needsUpdate = false;
+
+		if ( renderTarget ) {
+
+			drawBuffers = currentDrawbuffers.get( framebuffer );
+
+			if ( drawBuffers === undefined ) {
+
+				drawBuffers = [];
+				currentDrawbuffers.set( framebuffer, drawBuffers );
+
+			}
+
+			const textures = renderTarget.textures;
+
+			if ( drawBuffers.length !== textures.length || drawBuffers[ 0 ] !== gl.COLOR_ATTACHMENT0 ) {
+
+				for ( let i = 0, il = textures.length; i < il; i ++ ) {
+
+					drawBuffers[ i ] = gl.COLOR_ATTACHMENT0 + i;
+
+				}
+
+				drawBuffers.length = textures.length;
+
+				needsUpdate = true;
+
+			}
+
+		} else {
+
+			if ( drawBuffers[ 0 ] !== gl.BACK ) {
+
+				drawBuffers[ 0 ] = gl.BACK;
+
+				needsUpdate = true;
+
+			}
+
+		}
+
+		if ( needsUpdate ) {
+
+			gl.drawBuffers( drawBuffers );
+
+		}
+
+	}
+
+	function useProgram( program ) {
+
+		if ( currentProgram !== program ) {
+
+			gl.useProgram( program );
+
+			currentProgram = program;
+
+			return true;
+
+		}
+
+		return false;
+
+	}
+
+	const equationToGL = {
+		[ AddEquation ]: gl.FUNC_ADD,
+		[ SubtractEquation ]: gl.FUNC_SUBTRACT,
+		[ ReverseSubtractEquation ]: gl.FUNC_REVERSE_SUBTRACT
+	};
+
+	equationToGL[ MinEquation ] = gl.MIN;
+	equationToGL[ MaxEquation ] = gl.MAX;
+
+	const factorToGL = {
+		[ ZeroFactor ]: gl.ZERO,
+		[ OneFactor ]: gl.ONE,
+		[ SrcColorFactor ]: gl.SRC_COLOR,
+		[ SrcAlphaFactor ]: gl.SRC_ALPHA,
+		[ SrcAlphaSaturateFactor ]: gl.SRC_ALPHA_SATURATE,
+		[ DstColorFactor ]: gl.DST_COLOR,
+		[ DstAlphaFactor ]: gl.DST_ALPHA,
+		[ OneMinusSrcColorFactor ]: gl.ONE_MINUS_SRC_COLOR,
+		[ OneMinusSrcAlphaFactor ]: gl.ONE_MINUS_SRC_ALPHA,
+		[ OneMinusDstColorFactor ]: gl.ONE_MINUS_DST_COLOR,
+		[ OneMinusDstAlphaFactor ]: gl.ONE_MINUS_DST_ALPHA,
+		[ ConstantColorFactor ]: gl.CONSTANT_COLOR,
+		[ OneMinusConstantColorFactor ]: gl.ONE_MINUS_CONSTANT_COLOR,
+		[ ConstantAlphaFactor ]: gl.CONSTANT_ALPHA,
+		[ OneMinusConstantAlphaFactor ]: gl.ONE_MINUS_CONSTANT_ALPHA
+	};
+
+	function setBlending( blending, blendEquation, blendSrc, blendDst, blendEquationAlpha, blendSrcAlpha, blendDstAlpha, blendColor, blendAlpha, premultipliedAlpha ) {
+
+		if ( blending === NoBlending ) {
+
+			if ( currentBlendingEnabled === true ) {
+
+				disable( gl.BLEND );
+				currentBlendingEnabled = false;
+
+			}
+
+			return;
+
+		}
+
+		if ( currentBlendingEnabled === false ) {
+
+			enable( gl.BLEND );
+			currentBlendingEnabled = true;
+
+		}
+
+		if ( blending !== CustomBlending ) {
+
+			if ( blending !== currentBlending || premultipliedAlpha !== currentPremultipledAlpha ) {
+
+				if ( currentBlendEquation !== AddEquation || currentBlendEquationAlpha !== AddEquation ) {
+
+					gl.blendEquation( gl.FUNC_ADD );
+
+					currentBlendEquation = AddEquation;
+					currentBlendEquationAlpha = AddEquation;
+
+				}
+
+				if ( premultipliedAlpha ) {
+
+					switch ( blending ) {
+
+						case NormalBlending:
+							gl.blendFuncSeparate( gl.ONE, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA );
+							break;
+
+						case AdditiveBlending:
+							gl.blendFunc( gl.ONE, gl.ONE );
+							break;
+
+						case SubtractiveBlending:
+							gl.blendFuncSeparate( gl.ZERO, gl.ONE_MINUS_SRC_COLOR, gl.ZERO, gl.ONE );
+							break;
+
+						case MultiplyBlending:
+							gl.blendFuncSeparate( gl.ZERO, gl.SRC_COLOR, gl.ZERO, gl.SRC_ALPHA );
+							break;
+
+						default:
+							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
+							break;
+
+					}
+
+				} else {
+
+					switch ( blending ) {
+
+						case NormalBlending:
+							gl.blendFuncSeparate( gl.SRC_ALPHA, gl.ONE_MINUS_SRC_ALPHA, gl.ONE, gl.ONE_MINUS_SRC_ALPHA );
+							break;
+
+						case AdditiveBlending:
+							gl.blendFunc( gl.SRC_ALPHA, gl.ONE );
+							break;
+
+						case SubtractiveBlending:
+							gl.blendFuncSeparate( gl.ZERO, gl.ONE_MINUS_SRC_COLOR, gl.ZERO, gl.ONE );
+							break;
+
+						case MultiplyBlending:
+							gl.blendFunc( gl.ZERO, gl.SRC_COLOR );
+							break;
+
+						default:
+							console.error( 'THREE.WebGLState: Invalid blending: ', blending );
+							break;
+
+					}
+
+				}
+
+				currentBlendSrc = null;
+				currentBlendDst = null;
+				currentBlendSrcAlpha = null;
+				currentBlendDstAlpha = null;
+				currentBlendColor.set( 0, 0, 0 );
+				currentBlendAlpha = 0;
+
+				currentBlending = blending;
+				currentPremultipledAlpha = premultipliedAlpha;
+
+			}
+
+			return;
+
+		}
+
+		// custom blending
+
+		blendEquationAlpha = blendEquationAlpha || blendEquation;
+		blendSrcAlpha = blendSrcAlpha || blendSrc;
+		blendDstAlpha = blendDstAlpha || blendDst;
+
+		if ( blendEquation !== currentBlendEquation || blendEquationAlpha !== currentBlendEquationAlpha ) {
+
+			gl.blendEquationSeparate( equationToGL[ blendEquation ], equationToGL[ blendEquationAlpha ] );
+
+			currentBlendEquation = blendEquation;
+			currentBlendEquationAlpha = blendEquationAlpha;
+
+		}
+
+		if ( blendSrc !== currentBlendSrc || blendDst !== currentBlendDst || blendSrcAlpha !== currentBlendSrcAlpha || blendDstAlpha !== currentBlendDstAlpha ) {
+
+			gl.blendFuncSeparate( factorToGL[ blendSrc ], factorToGL[ blendDst ], factorToGL[ blendSrcAlpha ], factorToGL[ blendDstAlpha ] );
+
+			currentBlendSrc = blendSrc;
+			currentBlendDst = blendDst;
+			currentBlendSrcAlpha = blendSrcAlpha;
+			currentBlendDstAlpha = blendDstAlpha;
+
+		}
+
+		if ( blendColor.equals( currentBlendColor ) === false || blendAlpha !== currentBlendAlpha ) {
+
+			gl.blendColor( blendColor.r, blendColor.g, blendColor.b, blendAlpha );
+
+			currentBlendColor.copy( blendColor );
+			currentBlendAlpha = blendAlpha;
+
+		}
+
+		currentBlending = blending;
+		currentPremultipledAlpha = false;
+
+	}
+
+	function setMaterial( material, frontFaceCW ) {
+
+		material.side === DoubleSide
+			? disable( gl.CULL_FACE )
+			: enable( gl.CULL_FACE );
+
+		let flipSided = ( material.side === BackSide );
+		if ( frontFaceCW ) flipSided = ! flipSided;
+
+		setFlipSided( flipSided );
+
+		( material.blending === NormalBlending && material.transparent === false )
+			? setBlending( NoBlending )
+			: setBlending( material.blending, material.blendEquation, material.blendSrc, material.blendDst, material.blendEquationAlpha, material.blendSrcAlpha, material.blendDstAlpha, material.blendColor, material.blendAlpha, material.premultipliedAlpha );
+
+		depthBuffer.setFunc( material.depthFunc );
+		depthBuffer.setTest( material.depthTest );
+		depthBuffer.setMask( material.depthWrite );
+		colorBuffer.setMask( material.colorWrite );
+
+		const stencilWrite = material.stencilWrite;
+		stencilBuffer.setTest( stencilWrite );
+		if ( stencilWrite ) {
+
+			stencilBuffer.setMask( material.stencilWriteMask );
+			stencilBuffer.setFunc( material.stencilFunc, material.stencilRef, material.stencilFuncMask );
+			stencilBuffer.setOp( material.stencilFail, material.stencilZFail, material.stencilZPass );
+
+		}
+
+		setPolygonOffset( material.polygonOffset, material.polygonOffsetFactor, material.polygonOffsetUnits );
+
+		material.alphaToCoverage === true
+			? enable( gl.SAMPLE_ALPHA_TO_COVERAGE )
+			: disable( gl.SAMPLE_ALPHA_TO_COVERAGE );
+
+	}
+
+	//
+
+	function setFlipSided( flipSided ) {
+
+		if ( currentFlipSided !== flipSided ) {
+
+			if ( flipSided ) {
+
+				gl.frontFace( gl.CW );
+
+			} else {
+
+				gl.frontFace( gl.CCW );
+
+			}
+
+			currentFlipSided = flipSided;
+
+		}
+
+	}
+
+	function setCullFace( cullFace ) {
+
+		if ( cullFace !== CullFaceNone ) {
+
+			enable( gl.CULL_FACE );
+
+			if ( cullFace !== currentCullFace ) {
+
+				if ( cullFace === CullFaceBack ) {
+
+					gl.cullFace( gl.BACK );
+
+				} else if ( cullFace === CullFaceFront ) {
+
+					gl.cullFace( gl.FRONT );
+
+				} else {
+
+					gl.cullFace( gl.FRONT_AND_BACK );
+
+				}
+
+			}
+
+		} else {
+
+			disable( gl.CULL_FACE );
+
+		}
+
+		currentCullFace = cullFace;
+
+	}
+
+	function setLineWidth( width ) {
+
+		if ( width !== currentLineWidth ) {
+
+			if ( lineWidthAvailable ) gl.lineWidth( width );
+
+			currentLineWidth = width;
+
+		}
+
+	}
+
+	function setPolygonOffset( polygonOffset, factor, units ) {
+
+		if ( polygonOffset ) {
+
+			enable( gl.POLYGON_OFFSET_FILL );
+
+			if ( currentPolygonOffsetFactor !== factor || currentPolygonOffsetUnits !== units ) {
+
+				gl.polygonOffset( factor, units );
+
+				currentPolygonOffsetFactor = factor;
+				currentPolygonOffsetUnits = units;
+
+			}
+
+		} else {
+
+			disable( gl.POLYGON_OFFSET_FILL );
+
+		}
+
+	}
+
+	function setScissorTest( scissorTest ) {
+
+		if ( scissorTest ) {
+
+			enable( gl.SCISSOR_TEST );
+
+		} else {
+
+			disable( gl.SCISSOR_TEST );
+
+		}
+
+	}
+
+	// texture
+
+	function activeTexture( webglSlot ) {
+
+		if ( webglSlot === undefined ) webglSlot = gl.TEXTURE0 + maxTextures - 1;
+
+		if ( currentTextureSlot !== webglSlot ) {
+
+			gl.activeTexture( webglSlot );
+			currentTextureSlot = webglSlot;
+
+		}
+
+	}
+
+	function bindTexture( webglType, webglTexture, webglSlot ) {
+
+		if ( webglSlot === undefined ) {
+
+			if ( currentTextureSlot === null ) {
+
+				webglSlot = gl.TEXTURE0 + maxTextures - 1;
+
+			} else {
+
+				webglSlot = currentTextureSlot;
+
+			}
+
+		}
+
+		let boundTexture = currentBoundTextures[ webglSlot ];
+
+		if ( boundTexture === undefined ) {
+
+			boundTexture = { type: undefined, texture: undefined };
+			currentBoundTextures[ webglSlot ] = boundTexture;
+
+		}
+
+		if ( boundTexture.type !== webglType || boundTexture.texture !== webglTexture ) {
+
+			if ( currentTextureSlot !== webglSlot ) {
+
+				gl.activeTexture( webglSlot );
+				currentTextureSlot = webglSlot;
+
+			}
+
+			gl.bindTexture( webglType, webglTexture || emptyTextures[ webglType ] );
+
+			boundTexture.type = webglType;
+			boundTexture.texture = webglTexture;
+
+		}
+
+	}
+
+	function unbindTexture() {
+
+		const boundTexture = currentBoundTextures[ currentTextureSlot ];
+
+		if ( boundTexture !== undefined && boundTexture.type !== undefined ) {
+
+			gl.bindTexture( boundTexture.type, null );
+
+			boundTexture.type = undefined;
+			boundTexture.texture = undefined;
+
+		}
+
+	}
+
+	function compressedTexImage2D() {
+
+		try {
+
+			gl.compressedTexImage2D.apply( gl, arguments );
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLState:', error );
+
+		}
+
+	}
+
+	function compressedTexImage3D() {
+
+		try {
+
+			gl.compressedTexImage3D.apply( gl, arguments );
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLState:', error );
+
+		}
+
+	}
+
+	function texSubImage2D() {
+
+		try {
+
+			gl.texSubImage2D.apply( gl, arguments );
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLState:', error );
+
+		}
+
+	}
+
+	function texSubImage3D() {
+
+		try {
+
+			gl.texSubImage3D.apply( gl, arguments );
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLState:', error );
+
+		}
+
+	}
+
+	function compressedTexSubImage2D() {
+
+		try {
+
+			gl.compressedTexSubImage2D.apply( gl, arguments );
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLState:', error );
+
+		}
+
+	}
+
+	function compressedTexSubImage3D() {
+
+		try {
+
+			gl.compressedTexSubImage3D.apply( gl, arguments );
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLState:', error );
+
+		}
+
+	}
+
+	function texStorage2D() {
+
+		try {
+
+			gl.texStorage2D.apply( gl, arguments );
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLState:', error );
+
+		}
+
+	}
+
+	function texStorage3D() {
+
+		try {
+
+			gl.texStorage3D.apply( gl, arguments );
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLState:', error );
+
+		}
+
+	}
+
+	function texImage2D() {
+
+		try {
+
+			gl.texImage2D.apply( gl, arguments );
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLState:', error );
+
+		}
+
+	}
+
+	function texImage3D() {
+
+		try {
+
+			gl.texImage3D.apply( gl, arguments );
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLState:', error );
+
+		}
+
+	}
+
+	//
+
+	function scissor( scissor ) {
+
+		if ( currentScissor.equals( scissor ) === false ) {
+
+			gl.scissor( scissor.x, scissor.y, scissor.z, scissor.w );
+			currentScissor.copy( scissor );
+
+		}
+
+	}
+
+	function viewport( viewport ) {
+
+		if ( currentViewport.equals( viewport ) === false ) {
+
+			gl.viewport( viewport.x, viewport.y, viewport.z, viewport.w );
+			currentViewport.copy( viewport );
+
+		}
+
+	}
+
+	function updateUBOMapping( uniformsGroup, program ) {
+
+		let mapping = uboProgramMap.get( program );
+
+		if ( mapping === undefined ) {
+
+			mapping = new WeakMap();
+
+			uboProgramMap.set( program, mapping );
+
+		}
+
+		let blockIndex = mapping.get( uniformsGroup );
+
+		if ( blockIndex === undefined ) {
+
+			blockIndex = gl.getUniformBlockIndex( program, uniformsGroup.name );
+
+			mapping.set( uniformsGroup, blockIndex );
+
+		}
+
+	}
+
+	function uniformBlockBinding( uniformsGroup, program ) {
+
+		const mapping = uboProgramMap.get( program );
+		const blockIndex = mapping.get( uniformsGroup );
+
+		if ( uboBindings.get( program ) !== blockIndex ) {
+
+			// bind shader specific block index to global block point
+			gl.uniformBlockBinding( program, blockIndex, uniformsGroup.__bindingPointIndex );
+
+			uboBindings.set( program, blockIndex );
+
+		}
+
+	}
+
+	//
+
+	function reset() {
+
+		// reset state
+
+		gl.disable( gl.BLEND );
+		gl.disable( gl.CULL_FACE );
+		gl.disable( gl.DEPTH_TEST );
+		gl.disable( gl.POLYGON_OFFSET_FILL );
+		gl.disable( gl.SCISSOR_TEST );
+		gl.disable( gl.STENCIL_TEST );
+		gl.disable( gl.SAMPLE_ALPHA_TO_COVERAGE );
+
+		gl.blendEquation( gl.FUNC_ADD );
+		gl.blendFunc( gl.ONE, gl.ZERO );
+		gl.blendFuncSeparate( gl.ONE, gl.ZERO, gl.ONE, gl.ZERO );
+		gl.blendColor( 0, 0, 0, 0 );
+
+		gl.colorMask( true, true, true, true );
+		gl.clearColor( 0, 0, 0, 0 );
+
+		gl.depthMask( true );
+		gl.depthFunc( gl.LESS );
+		gl.clearDepth( 1 );
+
+		gl.stencilMask( 0xffffffff );
+		gl.stencilFunc( gl.ALWAYS, 0, 0xffffffff );
+		gl.stencilOp( gl.KEEP, gl.KEEP, gl.KEEP );
+		gl.clearStencil( 0 );
+
+		gl.cullFace( gl.BACK );
+		gl.frontFace( gl.CCW );
+
+		gl.polygonOffset( 0, 0 );
+
+		gl.activeTexture( gl.TEXTURE0 );
+
+		gl.bindFramebuffer( gl.FRAMEBUFFER, null );
+		gl.bindFramebuffer( gl.DRAW_FRAMEBUFFER, null );
+		gl.bindFramebuffer( gl.READ_FRAMEBUFFER, null );
+
+		gl.useProgram( null );
+
+		gl.lineWidth( 1 );
+
+		gl.scissor( 0, 0, gl.canvas.width, gl.canvas.height );
+		gl.viewport( 0, 0, gl.canvas.width, gl.canvas.height );
+
+		// reset internals
+
+		enabledCapabilities = {};
+
+		currentTextureSlot = null;
+		currentBoundTextures = {};
+
+		currentBoundFramebuffers = {};
+		currentDrawbuffers = new WeakMap();
+		defaultDrawbuffers = [];
+
+		currentProgram = null;
+
+		currentBlendingEnabled = false;
+		currentBlending = null;
+		currentBlendEquation = null;
+		currentBlendSrc = null;
+		currentBlendDst = null;
+		currentBlendEquationAlpha = null;
+		currentBlendSrcAlpha = null;
+		currentBlendDstAlpha = null;
+		currentBlendColor = new Color( 0, 0, 0 );
+		currentBlendAlpha = 0;
+		currentPremultipledAlpha = false;
+
+		currentFlipSided = null;
+		currentCullFace = null;
+
+		currentLineWidth = null;
+
+		currentPolygonOffsetFactor = null;
+		currentPolygonOffsetUnits = null;
+
+		currentScissor.set( 0, 0, gl.canvas.width, gl.canvas.height );
+		currentViewport.set( 0, 0, gl.canvas.width, gl.canvas.height );
+
+		colorBuffer.reset();
+		depthBuffer.reset();
+		stencilBuffer.reset();
+
+	}
+
+	return {
+
+		buffers: {
+			color: colorBuffer,
+			depth: depthBuffer,
+			stencil: stencilBuffer
+		},
+
+		enable: enable,
+		disable: disable,
+
+		bindFramebuffer: bindFramebuffer,
+		drawBuffers: drawBuffers,
+
+		useProgram: useProgram,
+
+		setBlending: setBlending,
+		setMaterial: setMaterial,
+
+		setFlipSided: setFlipSided,
+		setCullFace: setCullFace,
+
+		setLineWidth: setLineWidth,
+		setPolygonOffset: setPolygonOffset,
+
+		setScissorTest: setScissorTest,
+
+		activeTexture: activeTexture,
+		bindTexture: bindTexture,
+		unbindTexture: unbindTexture,
+		compressedTexImage2D: compressedTexImage2D,
+		compressedTexImage3D: compressedTexImage3D,
+		texImage2D: texImage2D,
+		texImage3D: texImage3D,
+
+		updateUBOMapping: updateUBOMapping,
+		uniformBlockBinding: uniformBlockBinding,
+
+		texStorage2D: texStorage2D,
+		texStorage3D: texStorage3D,
+		texSubImage2D: texSubImage2D,
+		texSubImage3D: texSubImage3D,
+		compressedTexSubImage2D: compressedTexSubImage2D,
+		compressedTexSubImage3D: compressedTexSubImage3D,
+
+		scissor: scissor,
+		viewport: viewport,
+
+		reset: reset
+
+	};
+
+}
+
+function contain( texture, aspect ) {
+
+	const imageAspect = ( texture.image && texture.image.width ) ? texture.image.width / texture.image.height : 1;
+
+	if ( imageAspect > aspect ) {
+
+		texture.repeat.x = 1;
+		texture.repeat.y = imageAspect / aspect;
+
+		texture.offset.x = 0;
+		texture.offset.y = ( 1 - texture.repeat.y ) / 2;
+
+	} else {
+
+		texture.repeat.x = aspect / imageAspect;
+		texture.repeat.y = 1;
+
+		texture.offset.x = ( 1 - texture.repeat.x ) / 2;
+		texture.offset.y = 0;
+
+	}
+
+	return texture;
+
+}
+
+function cover( texture, aspect ) {
+
+	const imageAspect = ( texture.image && texture.image.width ) ? texture.image.width / texture.image.height : 1;
+
+	if ( imageAspect > aspect ) {
+
+		texture.repeat.x = aspect / imageAspect;
+		texture.repeat.y = 1;
+
+		texture.offset.x = ( 1 - texture.repeat.x ) / 2;
+		texture.offset.y = 0;
+
+	} else {
+
+		texture.repeat.x = 1;
+		texture.repeat.y = imageAspect / aspect;
+
+		texture.offset.x = 0;
+		texture.offset.y = ( 1 - texture.repeat.y ) / 2;
+
+	}
+
+	return texture;
+
+}
+
+function fill( texture ) {
+
+	texture.repeat.x = 1;
+	texture.repeat.y = 1;
+
+	texture.offset.x = 0;
+	texture.offset.y = 0;
+
+	return texture;
+
+}
+
+
+
+/**
+ * Given the width, height, format, and type of a texture. Determines how many
+ * bytes must be used to represent the texture.
+ */
+function getByteLength( width, height, format, type ) {
+
+	const typeByteLength = getTextureTypeByteLength( type );
+
+	switch ( format ) {
+
+		// https://registry.khronos.org/OpenGL-Refpages/es3.0/html/glTexImage2D.xhtml
+		case AlphaFormat:
+			return width * height;
+		case LuminanceFormat:
+			return width * height;
+		case LuminanceAlphaFormat:
+			return width * height * 2;
+		case RedFormat:
+			return ( ( width * height ) / typeByteLength.components ) * typeByteLength.byteLength;
+		case RedIntegerFormat:
+			return ( ( width * height ) / typeByteLength.components ) * typeByteLength.byteLength;
+		case RGFormat:
+			return ( ( width * height * 2 ) / typeByteLength.components ) * typeByteLength.byteLength;
+		case RGIntegerFormat:
+			return ( ( width * height * 2 ) / typeByteLength.components ) * typeByteLength.byteLength;
+		case RGBFormat:
+			return ( ( width * height * 3 ) / typeByteLength.components ) * typeByteLength.byteLength;
+		case RGBAFormat:
+			return ( ( width * height * 4 ) / typeByteLength.components ) * typeByteLength.byteLength;
+		case RGBAIntegerFormat:
+			return ( ( width * height * 4 ) / typeByteLength.components ) * typeByteLength.byteLength;
+
+		// https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_s3tc_srgb/
+		case RGB_S3TC_DXT1_Format:
+		case RGBA_S3TC_DXT1_Format:
+			return Math.floor( ( width + 3 ) / 4 ) * Math.floor( ( height + 3 ) / 4 ) * 8;
+		case RGBA_S3TC_DXT3_Format:
+		case RGBA_S3TC_DXT5_Format:
+			return Math.floor( ( width + 3 ) / 4 ) * Math.floor( ( height + 3 ) / 4 ) * 16;
+
+		// https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_pvrtc/
+		case RGB_PVRTC_2BPPV1_Format:
+		case RGBA_PVRTC_2BPPV1_Format:
+			return ( Math.max( width, 16 ) * Math.max( height, 8 ) ) / 4;
+		case RGB_PVRTC_4BPPV1_Format:
+		case RGBA_PVRTC_4BPPV1_Format:
+			return ( Math.max( width, 8 ) * Math.max( height, 8 ) ) / 2;
+
+		// https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_etc/
+		case RGB_ETC1_Format:
+		case RGB_ETC2_Format:
+			return Math.floor( ( width + 3 ) / 4 ) * Math.floor( ( height + 3 ) / 4 ) * 8;
+		case RGBA_ETC2_EAC_Format:
+			return Math.floor( ( width + 3 ) / 4 ) * Math.floor( ( height + 3 ) / 4 ) * 16;
+
+		// https://registry.khronos.org/webgl/extensions/WEBGL_compressed_texture_astc/
+		case RGBA_ASTC_4x4_Format:
+			return Math.floor( ( width + 3 ) / 4 ) * Math.floor( ( height + 3 ) / 4 ) * 16;
+		case RGBA_ASTC_5x4_Format:
+			return Math.floor( ( width + 4 ) / 5 ) * Math.floor( ( height + 3 ) / 4 ) * 16;
+		case RGBA_ASTC_5x5_Format:
+			return Math.floor( ( width + 4 ) / 5 ) * Math.floor( ( height + 4 ) / 5 ) * 16;
+		case RGBA_ASTC_6x5_Format:
+			return Math.floor( ( width + 5 ) / 6 ) * Math.floor( ( height + 4 ) / 5 ) * 16;
+		case RGBA_ASTC_6x6_Format:
+			return Math.floor( ( width + 5 ) / 6 ) * Math.floor( ( height + 5 ) / 6 ) * 16;
+		case RGBA_ASTC_8x5_Format:
+			return Math.floor( ( width + 7 ) / 8 ) * Math.floor( ( height + 4 ) / 5 ) * 16;
+		case RGBA_ASTC_8x6_Format:
+			return Math.floor( ( width + 7 ) / 8 ) * Math.floor( ( height + 5 ) / 6 ) * 16;
+		case RGBA_ASTC_8x8_Format:
+			return Math.floor( ( width + 7 ) / 8 ) * Math.floor( ( height + 7 ) / 8 ) * 16;
+		case RGBA_ASTC_10x5_Format:
+			return Math.floor( ( width + 9 ) / 10 ) * Math.floor( ( height + 4 ) / 5 ) * 16;
+		case RGBA_ASTC_10x6_Format:
+			return Math.floor( ( width + 9 ) / 10 ) * Math.floor( ( height + 5 ) / 6 ) * 16;
+		case RGBA_ASTC_10x8_Format:
+			return Math.floor( ( width + 9 ) / 10 ) * Math.floor( ( height + 7 ) / 8 ) * 16;
+		case RGBA_ASTC_10x10_Format:
+			return Math.floor( ( width + 9 ) / 10 ) * Math.floor( ( height + 9 ) / 10 ) * 16;
+		case RGBA_ASTC_12x10_Format:
+			return Math.floor( ( width + 11 ) / 12 ) * Math.floor( ( height + 9 ) / 10 ) * 16;
+		case RGBA_ASTC_12x12_Format:
+			return Math.floor( ( width + 11 ) / 12 ) * Math.floor( ( height + 11 ) / 12 ) * 16;
+
+		// https://registry.khronos.org/webgl/extensions/EXT_texture_compression_bptc/
+		case RGBA_BPTC_Format:
+		case RGB_BPTC_SIGNED_Format:
+		case RGB_BPTC_UNSIGNED_Format:
+			return Math.ceil( width / 4 ) * Math.ceil( height / 4 ) * 16;
+
+		// https://registry.khronos.org/webgl/extensions/EXT_texture_compression_rgtc/
+		case RED_RGTC1_Format:
+		case SIGNED_RED_RGTC1_Format:
+			return Math.ceil( width / 4 ) * Math.ceil( height / 4 ) * 8;
+		case RED_GREEN_RGTC2_Format:
+		case SIGNED_RED_GREEN_RGTC2_Format:
+			return Math.ceil( width / 4 ) * Math.ceil( height / 4 ) * 16;
+
+	}
+
+	throw new Error(
+		`Unable to determine texture byte length for ${format} format.`,
+	);
+
+}
+
+function getTextureTypeByteLength( type ) {
+
+	switch ( type ) {
+
+		case UnsignedByteType:
+		case ByteType:
+			return { byteLength: 1, components: 1 };
+		case UnsignedShortType:
+		case ShortType:
+		case HalfFloatType:
+			return { byteLength: 2, components: 1 };
+		case UnsignedShort4444Type:
+		case UnsignedShort5551Type:
+			return { byteLength: 2, components: 4 };
+		case UnsignedIntType:
+		case IntType:
+		case FloatType:
+			return { byteLength: 4, components: 1 };
+		case UnsignedInt5999Type:
+			return { byteLength: 4, components: 3 };
+
+	}
+
+	throw new Error( `Unknown texture type ${type}.` );
+
+}
+
+const TextureUtils = {
+	contain,
+	cover,
+	fill,
+	getByteLength
+};
+
+function WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info ) {
+
+	const multisampledRTTExt = extensions.has( 'WEBGL_multisampled_render_to_texture' ) ? extensions.get( 'WEBGL_multisampled_render_to_texture' ) : null;
+	const supportsInvalidateFramebuffer = typeof navigator === 'undefined' ? false : /OculusBrowser/g.test( navigator.userAgent );
+
+	const _imageDimensions = new Vector2();
+	const _videoTextures = new WeakMap();
+	let _canvas;
+
+	const _sources = new WeakMap(); // maps WebglTexture objects to instances of Source
+
+	// cordova iOS (as of 5.0) still uses UIWebView, which provides OffscreenCanvas,
+	// also OffscreenCanvas.getContext("webgl"), but not OffscreenCanvas.getContext("2d")!
+	// Some implementations may only implement OffscreenCanvas partially (e.g. lacking 2d).
+
+	let useOffscreenCanvas = false;
+
+	try {
+
+		useOffscreenCanvas = typeof OffscreenCanvas !== 'undefined'
+			// eslint-disable-next-line compat/compat
+			&& ( new OffscreenCanvas( 1, 1 ).getContext( '2d' ) ) !== null;
+
+	} catch ( err ) {
+
+		// Ignore any errors
+
+	}
+
+	function createCanvas( width, height ) {
+
+		// Use OffscreenCanvas when available. Specially needed in web workers
+
+		return useOffscreenCanvas ?
+			// eslint-disable-next-line compat/compat
+			new OffscreenCanvas( width, height ) : createElementNS( 'canvas' );
+
+	}
+
+	function resizeImage( image, needsNewCanvas, maxSize ) {
+
+		let scale = 1;
+
+		const dimensions = getDimensions( image );
+
+		// handle case if texture exceeds max size
+
+		if ( dimensions.width > maxSize || dimensions.height > maxSize ) {
+
+			scale = maxSize / Math.max( dimensions.width, dimensions.height );
+
+		}
+
+		// only perform resize if necessary
+
+		if ( scale < 1 ) {
+
+			// only perform resize for certain image types
+
+			if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
+				( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
+				( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ||
+				( typeof VideoFrame !== 'undefined' && image instanceof VideoFrame ) ) {
+
+				const width = Math.floor( scale * dimensions.width );
+				const height = Math.floor( scale * dimensions.height );
+
+				if ( _canvas === undefined ) _canvas = createCanvas( width, height );
+
+				// cube textures can't reuse the same canvas
+
+				const canvas = needsNewCanvas ? createCanvas( width, height ) : _canvas;
+
+				canvas.width = width;
+				canvas.height = height;
+
+				const context = canvas.getContext( '2d' );
+				context.drawImage( image, 0, 0, width, height );
+
+				console.warn( 'THREE.WebGLRenderer: Texture has been resized from (' + dimensions.width + 'x' + dimensions.height + ') to (' + width + 'x' + height + ').' );
+
+				return canvas;
+
+			} else {
+
+				if ( 'data' in image ) {
+
+					console.warn( 'THREE.WebGLRenderer: Image in DataTexture is too big (' + dimensions.width + 'x' + dimensions.height + ').' );
+
+				}
+
+				return image;
+
+			}
+
+		}
+
+		return image;
+
+	}
+
+	function textureNeedsGenerateMipmaps( texture ) {
+
+		return texture.generateMipmaps && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter;
+
+	}
+
+	function generateMipmap( target ) {
+
+		_gl.generateMipmap( target );
+
+	}
+
+	function getInternalFormat( internalFormatName, glFormat, glType, colorSpace, forceLinearTransfer = false ) {
+
+		if ( internalFormatName !== null ) {
+
+			if ( _gl[ internalFormatName ] !== undefined ) return _gl[ internalFormatName ];
+
+			console.warn( 'THREE.WebGLRenderer: Attempt to use non-existing WebGL internal format \'' + internalFormatName + '\'' );
+
+		}
+
+		let internalFormat = glFormat;
+
+		if ( glFormat === _gl.RED ) {
+
+			if ( glType === _gl.FLOAT ) internalFormat = _gl.R32F;
+			if ( glType === _gl.HALF_FLOAT ) internalFormat = _gl.R16F;
+			if ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.R8;
+
+		}
+
+		if ( glFormat === _gl.RED_INTEGER ) {
+
+			if ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.R8UI;
+			if ( glType === _gl.UNSIGNED_SHORT ) internalFormat = _gl.R16UI;
+			if ( glType === _gl.UNSIGNED_INT ) internalFormat = _gl.R32UI;
+			if ( glType === _gl.BYTE ) internalFormat = _gl.R8I;
+			if ( glType === _gl.SHORT ) internalFormat = _gl.R16I;
+			if ( glType === _gl.INT ) internalFormat = _gl.R32I;
+
+		}
+
+		if ( glFormat === _gl.RG ) {
+
+			if ( glType === _gl.FLOAT ) internalFormat = _gl.RG32F;
+			if ( glType === _gl.HALF_FLOAT ) internalFormat = _gl.RG16F;
+			if ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.RG8;
+
+		}
+
+		if ( glFormat === _gl.RG_INTEGER ) {
+
+			if ( glType === _gl.UNSIGNED_BYTE ) internalFormat = _gl.RG8UI;
+			if ( glType === _gl.UNSIGNED_SHORT ) internalFormat = _gl.RG16UI;
+			if ( glType === _gl.UNSIGNED_INT ) internalFormat = _gl.RG32UI;
+			if ( glType === _gl.BYTE ) internalFormat = _gl.RG8I;
+			if ( glType === _gl.SHORT ) internalFormat = _gl.RG16I;
+			if ( glType === _gl.INT ) internalFormat = _gl.RG32I;
+
+		}
+
+		if ( glFormat === _gl.RGB ) {
+
+			if ( glType === _gl.UNSIGNED_INT_5_9_9_9_REV ) internalFormat = _gl.RGB9_E5;
+
+		}
+
+		if ( glFormat === _gl.RGBA ) {
+
+			const transfer = forceLinearTransfer ? LinearTransfer : ColorManagement.getTransfer( colorSpace );
+
+			if ( glType === _gl.FLOAT ) internalFormat = _gl.RGBA32F;
+			if ( glType === _gl.HALF_FLOAT ) internalFormat = _gl.RGBA16F;
+			if ( glType === _gl.UNSIGNED_BYTE ) internalFormat = ( transfer === SRGBTransfer ) ? _gl.SRGB8_ALPHA8 : _gl.RGBA8;
+			if ( glType === _gl.UNSIGNED_SHORT_4_4_4_4 ) internalFormat = _gl.RGBA4;
+			if ( glType === _gl.UNSIGNED_SHORT_5_5_5_1 ) internalFormat = _gl.RGB5_A1;
+
+		}
+
+		if ( internalFormat === _gl.R16F || internalFormat === _gl.R32F ||
+			internalFormat === _gl.RG16F || internalFormat === _gl.RG32F ||
+			internalFormat === _gl.RGBA16F || internalFormat === _gl.RGBA32F ) {
+
+			extensions.get( 'EXT_color_buffer_float' );
+
+		}
+
+		return internalFormat;
+
+	}
+
+	function getInternalDepthFormat( useStencil, depthType ) {
+
+		let glInternalFormat;
+		if ( useStencil ) {
+
+			if ( depthType === null || depthType === UnsignedIntType || depthType === UnsignedInt248Type ) {
+
+				glInternalFormat = _gl.DEPTH24_STENCIL8;
+
+			} else if ( depthType === FloatType ) {
+
+				glInternalFormat = _gl.DEPTH32F_STENCIL8;
+
+			} else if ( depthType === UnsignedShortType ) {
+
+				glInternalFormat = _gl.DEPTH24_STENCIL8;
+				console.warn( 'DepthTexture: 16 bit depth attachment is not supported with stencil. Using 24-bit attachment.' );
+
+			}
+
+		} else {
+
+			if ( depthType === null || depthType === UnsignedIntType || depthType === UnsignedInt248Type ) {
+
+				glInternalFormat = _gl.DEPTH_COMPONENT24;
+
+			} else if ( depthType === FloatType ) {
+
+				glInternalFormat = _gl.DEPTH_COMPONENT32F;
+
+			} else if ( depthType === UnsignedShortType ) {
+
+				glInternalFormat = _gl.DEPTH_COMPONENT16;
+
+			}
+
+		}
+
+		return glInternalFormat;
+
+	}
+
+	function getMipLevels( texture, image ) {
+
+		if ( textureNeedsGenerateMipmaps( texture ) === true || ( texture.isFramebufferTexture && texture.minFilter !== NearestFilter && texture.minFilter !== LinearFilter ) ) {
+
+			return Math.log2( Math.max( image.width, image.height ) ) + 1;
+
+		} else if ( texture.mipmaps !== undefined && texture.mipmaps.length > 0 ) {
+
+			// user-defined mipmaps
+
+			return texture.mipmaps.length;
+
+		} else if ( texture.isCompressedTexture && Array.isArray( texture.image ) ) {
+
+			return image.mipmaps.length;
+
+		} else {
+
+			// texture without mipmaps (only base level)
+
+			return 1;
+
+		}
+
+	}
+
+	//
+
+	function onTextureDispose( event ) {
+
+		const texture = event.target;
+
+		texture.removeEventListener( 'dispose', onTextureDispose );
+
+		deallocateTexture( texture );
+
+		if ( texture.isVideoTexture ) {
+
+			_videoTextures.delete( texture );
+
+		}
+
+	}
+
+	function onRenderTargetDispose( event ) {
+
+		const renderTarget = event.target;
+
+		renderTarget.removeEventListener( 'dispose', onRenderTargetDispose );
+
+		deallocateRenderTarget( renderTarget );
+
+	}
+
+	//
+
+	function deallocateTexture( texture ) {
+
+		const textureProperties = properties.get( texture );
+
+		if ( textureProperties.__webglInit === undefined ) return;
+
+		// check if it's necessary to remove the WebGLTexture object
+
+		const source = texture.source;
+		const webglTextures = _sources.get( source );
+
+		if ( webglTextures ) {
+
+			const webglTexture = webglTextures[ textureProperties.__cacheKey ];
+			webglTexture.usedTimes --;
+
+			// the WebGLTexture object is not used anymore, remove it
+
+			if ( webglTexture.usedTimes === 0 ) {
+
+				deleteTexture( texture );
+
+			}
+
+			// remove the weak map entry if no WebGLTexture uses the source anymore
+
+			if ( Object.keys( webglTextures ).length === 0 ) {
+
+				_sources.delete( source );
+
+			}
+
+		}
+
+		properties.remove( texture );
+
+	}
+
+	function deleteTexture( texture ) {
+
+		const textureProperties = properties.get( texture );
+		_gl.deleteTexture( textureProperties.__webglTexture );
+
+		const source = texture.source;
+		const webglTextures = _sources.get( source );
+		delete webglTextures[ textureProperties.__cacheKey ];
+
+		info.memory.textures --;
+
+	}
+
+	function deallocateRenderTarget( renderTarget ) {
+
+		const renderTargetProperties = properties.get( renderTarget );
+
+		if ( renderTarget.depthTexture ) {
+
+			renderTarget.depthTexture.dispose();
+
+		}
+
+		if ( renderTarget.isWebGLCubeRenderTarget ) {
+
+			for ( let i = 0; i < 6; i ++ ) {
+
+				if ( Array.isArray( renderTargetProperties.__webglFramebuffer[ i ] ) ) {
+
+					for ( let level = 0; level < renderTargetProperties.__webglFramebuffer[ i ].length; level ++ ) _gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ][ level ] );
+
+				} else {
+
+					_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ i ] );
+
+				}
+
+				if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer[ i ] );
+
+			}
+
+		} else {
+
+			if ( Array.isArray( renderTargetProperties.__webglFramebuffer ) ) {
+
+				for ( let level = 0; level < renderTargetProperties.__webglFramebuffer.length; level ++ ) _gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer[ level ] );
+
+			} else {
+
+				_gl.deleteFramebuffer( renderTargetProperties.__webglFramebuffer );
+
+			}
+
+			if ( renderTargetProperties.__webglDepthbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthbuffer );
+			if ( renderTargetProperties.__webglMultisampledFramebuffer ) _gl.deleteFramebuffer( renderTargetProperties.__webglMultisampledFramebuffer );
+
+			if ( renderTargetProperties.__webglColorRenderbuffer ) {
+
+				for ( let i = 0; i < renderTargetProperties.__webglColorRenderbuffer.length; i ++ ) {
+
+					if ( renderTargetProperties.__webglColorRenderbuffer[ i ] ) _gl.deleteRenderbuffer( renderTargetProperties.__webglColorRenderbuffer[ i ] );
+
+				}
+
+			}
+
+			if ( renderTargetProperties.__webglDepthRenderbuffer ) _gl.deleteRenderbuffer( renderTargetProperties.__webglDepthRenderbuffer );
+
+		}
+
+		const textures = renderTarget.textures;
+
+		for ( let i = 0, il = textures.length; i < il; i ++ ) {
+
+			const attachmentProperties = properties.get( textures[ i ] );
+
+			if ( attachmentProperties.__webglTexture ) {
+
+				_gl.deleteTexture( attachmentProperties.__webglTexture );
+
+				info.memory.textures --;
+
+			}
+
+			properties.remove( textures[ i ] );
+
+		}
+
+		properties.remove( renderTarget );
+
+	}
+
+	//
+
+	let textureUnits = 0;
+
+	function resetTextureUnits() {
+
+		textureUnits = 0;
+
+	}
+
+	function allocateTextureUnit() {
+
+		const textureUnit = textureUnits;
+
+		if ( textureUnit >= capabilities.maxTextures ) {
+
+			console.warn( 'THREE.WebGLTextures: Trying to use ' + textureUnit + ' texture units while this GPU supports only ' + capabilities.maxTextures );
+
+		}
+
+		textureUnits += 1;
+
+		return textureUnit;
+
+	}
+
+	function getTextureCacheKey( texture ) {
+
+		const array = [];
+
+		array.push( texture.wrapS );
+		array.push( texture.wrapT );
+		array.push( texture.wrapR || 0 );
+		array.push( texture.magFilter );
+		array.push( texture.minFilter );
+		array.push( texture.anisotropy );
+		array.push( texture.internalFormat );
+		array.push( texture.format );
+		array.push( texture.type );
+		array.push( texture.generateMipmaps );
+		array.push( texture.premultiplyAlpha );
+		array.push( texture.flipY );
+		array.push( texture.unpackAlignment );
+		array.push( texture.colorSpace );
+
+		return array.join();
+
+	}
+
+	//
+
+	function setTexture2D( texture, slot ) {
+
+		const textureProperties = properties.get( texture );
+
+		if ( texture.isVideoTexture ) updateVideoTexture( texture );
+
+		if ( texture.isRenderTargetTexture === false && texture.version > 0 && textureProperties.__version !== texture.version ) {
+
+			const image = texture.image;
+
+			if ( image === null ) {
+
+				console.warn( 'THREE.WebGLRenderer: Texture marked for update but no image data found.' );
+
+			} else if ( image.complete === false ) {
+
+				console.warn( 'THREE.WebGLRenderer: Texture marked for update but image is incomplete' );
+
+			} else {
+
+				uploadTexture( textureProperties, texture, slot );
+				return;
+
+			}
+
+		}
+
+		state.bindTexture( _gl.TEXTURE_2D, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );
+
+	}
+
+	function setTexture2DArray( texture, slot ) {
+
+		const textureProperties = properties.get( texture );
+
+		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
+
+			uploadTexture( textureProperties, texture, slot );
+			return;
+
+		}
+
+		state.bindTexture( _gl.TEXTURE_2D_ARRAY, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );
+
+	}
+
+	function setTexture3D( texture, slot ) {
+
+		const textureProperties = properties.get( texture );
+
+		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
+
+			uploadTexture( textureProperties, texture, slot );
+			return;
+
+		}
+
+		state.bindTexture( _gl.TEXTURE_3D, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );
+
+	}
+
+	function setTextureCube( texture, slot ) {
+
+		const textureProperties = properties.get( texture );
+
+		if ( texture.version > 0 && textureProperties.__version !== texture.version ) {
+
+			uploadCubeTexture( textureProperties, texture, slot );
+			return;
+
+		}
+
+		state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );
+
+	}
+
+	const wrappingToGL = {
+		[ RepeatWrapping ]: _gl.REPEAT,
+		[ ClampToEdgeWrapping ]: _gl.CLAMP_TO_EDGE,
+		[ MirroredRepeatWrapping ]: _gl.MIRRORED_REPEAT
+	};
+
+	const filterToGL = {
+		[ NearestFilter ]: _gl.NEAREST,
+		[ NearestMipmapNearestFilter ]: _gl.NEAREST_MIPMAP_NEAREST,
+		[ NearestMipmapLinearFilter ]: _gl.NEAREST_MIPMAP_LINEAR,
+
+		[ LinearFilter ]: _gl.LINEAR,
+		[ LinearMipmapNearestFilter ]: _gl.LINEAR_MIPMAP_NEAREST,
+		[ LinearMipmapLinearFilter ]: _gl.LINEAR_MIPMAP_LINEAR
+	};
+
+	const compareToGL = {
+		[ NeverCompare ]: _gl.NEVER,
+		[ AlwaysCompare ]: _gl.ALWAYS,
+		[ LessCompare ]: _gl.LESS,
+		[ LessEqualCompare ]: _gl.LEQUAL,
+		[ EqualCompare ]: _gl.EQUAL,
+		[ GreaterEqualCompare ]: _gl.GEQUAL,
+		[ GreaterCompare ]: _gl.GREATER,
+		[ NotEqualCompare ]: _gl.NOTEQUAL
+	};
+
+	function setTextureParameters( textureType, texture ) {
+
+		if ( texture.type === FloatType && extensions.has( 'OES_texture_float_linear' ) === false &&
+			( texture.magFilter === LinearFilter || texture.magFilter === LinearMipmapNearestFilter || texture.magFilter === NearestMipmapLinearFilter || texture.magFilter === LinearMipmapLinearFilter ||
+			texture.minFilter === LinearFilter || texture.minFilter === LinearMipmapNearestFilter || texture.minFilter === NearestMipmapLinearFilter || texture.minFilter === LinearMipmapLinearFilter ) ) {
+
+			console.warn( 'THREE.WebGLRenderer: Unable to use linear filtering with floating point textures. OES_texture_float_linear not supported on this device.' );
+
+		}
+
+		_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_S, wrappingToGL[ texture.wrapS ] );
+		_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_T, wrappingToGL[ texture.wrapT ] );
+
+		if ( textureType === _gl.TEXTURE_3D || textureType === _gl.TEXTURE_2D_ARRAY ) {
+
+			_gl.texParameteri( textureType, _gl.TEXTURE_WRAP_R, wrappingToGL[ texture.wrapR ] );
+
+		}
+
+		_gl.texParameteri( textureType, _gl.TEXTURE_MAG_FILTER, filterToGL[ texture.magFilter ] );
+		_gl.texParameteri( textureType, _gl.TEXTURE_MIN_FILTER, filterToGL[ texture.minFilter ] );
+
+		if ( texture.compareFunction ) {
+
+			_gl.texParameteri( textureType, _gl.TEXTURE_COMPARE_MODE, _gl.COMPARE_REF_TO_TEXTURE );
+			_gl.texParameteri( textureType, _gl.TEXTURE_COMPARE_FUNC, compareToGL[ texture.compareFunction ] );
+
+		}
+
+		if ( extensions.has( 'EXT_texture_filter_anisotropic' ) === true ) {
+
+			if ( texture.magFilter === NearestFilter ) return;
+			if ( texture.minFilter !== NearestMipmapLinearFilter && texture.minFilter !== LinearMipmapLinearFilter ) return;
+			if ( texture.type === FloatType && extensions.has( 'OES_texture_float_linear' ) === false ) return; // verify extension
+
+			if ( texture.anisotropy > 1 || properties.get( texture ).__currentAnisotropy ) {
+
+				const extension = extensions.get( 'EXT_texture_filter_anisotropic' );
+				_gl.texParameterf( textureType, extension.TEXTURE_MAX_ANISOTROPY_EXT, Math.min( texture.anisotropy, capabilities.getMaxAnisotropy() ) );
+				properties.get( texture ).__currentAnisotropy = texture.anisotropy;
+
+			}
+
+		}
+
+	}
+
+	function initTexture( textureProperties, texture ) {
+
+		let forceUpload = false;
+
+		if ( textureProperties.__webglInit === undefined ) {
+
+			textureProperties.__webglInit = true;
+
+			texture.addEventListener( 'dispose', onTextureDispose );
+
+		}
+
+		// create Source <-> WebGLTextures mapping if necessary
+
+		const source = texture.source;
+		let webglTextures = _sources.get( source );
+
+		if ( webglTextures === undefined ) {
+
+			webglTextures = {};
+			_sources.set( source, webglTextures );
+
+		}
+
+		// check if there is already a WebGLTexture object for the given texture parameters
+
+		const textureCacheKey = getTextureCacheKey( texture );
+
+		if ( textureCacheKey !== textureProperties.__cacheKey ) {
+
+			// if not, create a new instance of WebGLTexture
+
+			if ( webglTextures[ textureCacheKey ] === undefined ) {
+
+				// create new entry
+
+				webglTextures[ textureCacheKey ] = {
+					texture: _gl.createTexture(),
+					usedTimes: 0
+				};
+
+				info.memory.textures ++;
+
+				// when a new instance of WebGLTexture was created, a texture upload is required
+				// even if the image contents are identical
+
+				forceUpload = true;
+
+			}
+
+			webglTextures[ textureCacheKey ].usedTimes ++;
+
+			// every time the texture cache key changes, it's necessary to check if an instance of
+			// WebGLTexture can be deleted in order to avoid a memory leak.
+
+			const webglTexture = webglTextures[ textureProperties.__cacheKey ];
+
+			if ( webglTexture !== undefined ) {
+
+				webglTextures[ textureProperties.__cacheKey ].usedTimes --;
+
+				if ( webglTexture.usedTimes === 0 ) {
+
+					deleteTexture( texture );
+
+				}
+
+			}
+
+			// store references to cache key and WebGLTexture object
+
+			textureProperties.__cacheKey = textureCacheKey;
+			textureProperties.__webglTexture = webglTextures[ textureCacheKey ].texture;
+
+		}
+
+		return forceUpload;
+
+	}
+
+	function uploadTexture( textureProperties, texture, slot ) {
+
+		let textureType = _gl.TEXTURE_2D;
+
+		if ( texture.isDataArrayTexture || texture.isCompressedArrayTexture ) textureType = _gl.TEXTURE_2D_ARRAY;
+		if ( texture.isData3DTexture ) textureType = _gl.TEXTURE_3D;
+
+		const forceUpload = initTexture( textureProperties, texture );
+		const source = texture.source;
+
+		state.bindTexture( textureType, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );
+
+		const sourceProperties = properties.get( source );
+
+		if ( source.version !== sourceProperties.__version || forceUpload === true ) {
+
+			state.activeTexture( _gl.TEXTURE0 + slot );
+
+			const workingPrimaries = ColorManagement.getPrimaries( ColorManagement.workingColorSpace );
+			const texturePrimaries = texture.colorSpace === NoColorSpace ? null : ColorManagement.getPrimaries( texture.colorSpace );
+			const unpackConversion = texture.colorSpace === NoColorSpace || workingPrimaries === texturePrimaries ? _gl.NONE : _gl.BROWSER_DEFAULT_WEBGL;
+
+			_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );
+			_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha );
+			_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment );
+			_gl.pixelStorei( _gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, unpackConversion );
+
+			let image = resizeImage( texture.image, false, capabilities.maxTextureSize );
+			image = verifyColorSpace( texture, image );
+
+			const glFormat = utils.convert( texture.format, texture.colorSpace );
+
+			const glType = utils.convert( texture.type );
+			let glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.colorSpace, texture.isVideoTexture );
+
+			setTextureParameters( textureType, texture );
+
+			let mipmap;
+			const mipmaps = texture.mipmaps;
+
+			const useTexStorage = ( texture.isVideoTexture !== true );
+			const allocateMemory = ( sourceProperties.__version === undefined ) || ( forceUpload === true );
+			const dataReady = source.dataReady;
+			const levels = getMipLevels( texture, image );
+
+			if ( texture.isDepthTexture ) {
+
+				glInternalFormat = getInternalDepthFormat( texture.format === DepthStencilFormat, texture.type );
+
+				//
+
+				if ( allocateMemory ) {
+
+					if ( useTexStorage ) {
+
+						state.texStorage2D( _gl.TEXTURE_2D, 1, glInternalFormat, image.width, image.height );
+
+					} else {
+
+						state.texImage2D( _gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, null );
+
+					}
+
+				}
+
+			} else if ( texture.isDataTexture ) {
+
+				// use manually created mipmaps if available
+				// if there are no manual mipmaps
+				// set 0 level mipmap and then use GL to generate other mipmap levels
+
+				if ( mipmaps.length > 0 ) {
+
+					if ( useTexStorage && allocateMemory ) {
+
+						state.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );
+
+					}
+
+					for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {
+
+						mipmap = mipmaps[ i ];
+
+						if ( useTexStorage ) {
+
+							if ( dataReady ) {
+
+								state.texSubImage2D( _gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );
+
+							}
+
+						} else {
+
+							state.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
+
+						}
+
+					}
+
+					texture.generateMipmaps = false;
+
+				} else {
+
+					if ( useTexStorage ) {
+
+						if ( allocateMemory ) {
+
+							state.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, image.width, image.height );
+
+						}
+
+						if ( dataReady ) {
+
+							state.texSubImage2D( _gl.TEXTURE_2D, 0, 0, 0, image.width, image.height, glFormat, glType, image.data );
+
+						}
+
+					} else {
+
+						state.texImage2D( _gl.TEXTURE_2D, 0, glInternalFormat, image.width, image.height, 0, glFormat, glType, image.data );
+
+					}
+
+				}
+
+			} else if ( texture.isCompressedTexture ) {
+
+				if ( texture.isCompressedArrayTexture ) {
+
+					if ( useTexStorage && allocateMemory ) {
+
+						state.texStorage3D( _gl.TEXTURE_2D_ARRAY, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height, image.depth );
+
+					}
+
+					for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {
+
+						mipmap = mipmaps[ i ];
+
+						if ( texture.format !== RGBAFormat ) {
+
+							if ( glFormat !== null ) {
+
+								if ( useTexStorage ) {
+
+									if ( dataReady ) {
+
+										if ( texture.layerUpdates.size > 0 ) {
+
+											const layerByteLength = getByteLength( mipmap.width, mipmap.height, texture.format, texture.type );
+
+											for ( const layerIndex of texture.layerUpdates ) {
+
+												const layerData = mipmap.data.subarray(
+													layerIndex * layerByteLength / mipmap.data.BYTES_PER_ELEMENT,
+													( layerIndex + 1 ) * layerByteLength / mipmap.data.BYTES_PER_ELEMENT
+												);
+												state.compressedTexSubImage3D( _gl.TEXTURE_2D_ARRAY, i, 0, 0, layerIndex, mipmap.width, mipmap.height, 1, glFormat, layerData, 0, 0 );
+
+											}
+
+											texture.clearLayerUpdates();
+
+										} else {
+
+											state.compressedTexSubImage3D( _gl.TEXTURE_2D_ARRAY, i, 0, 0, 0, mipmap.width, mipmap.height, image.depth, glFormat, mipmap.data, 0, 0 );
+
+										}
+
+									}
+
+								} else {
+
+									state.compressedTexImage3D( _gl.TEXTURE_2D_ARRAY, i, glInternalFormat, mipmap.width, mipmap.height, image.depth, 0, mipmap.data, 0, 0 );
+
+								}
+
+							} else {
+
+								console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );
+
+							}
+
+						} else {
+
+							if ( useTexStorage ) {
+
+								if ( dataReady ) {
+
+									state.texSubImage3D( _gl.TEXTURE_2D_ARRAY, i, 0, 0, 0, mipmap.width, mipmap.height, image.depth, glFormat, glType, mipmap.data );
+
+								}
+
+							} else {
+
+								state.texImage3D( _gl.TEXTURE_2D_ARRAY, i, glInternalFormat, mipmap.width, mipmap.height, image.depth, 0, glFormat, glType, mipmap.data );
+
+							}
+
+						}
+
+					}
+
+				} else {
+
+					if ( useTexStorage && allocateMemory ) {
+
+						state.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, mipmaps[ 0 ].width, mipmaps[ 0 ].height );
+
+					}
+
+					for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {
+
+						mipmap = mipmaps[ i ];
+
+						if ( texture.format !== RGBAFormat ) {
+
+							if ( glFormat !== null ) {
+
+								if ( useTexStorage ) {
+
+									if ( dataReady ) {
+
+										state.compressedTexSubImage2D( _gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data );
+
+									}
+
+								} else {
+
+									state.compressedTexImage2D( _gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );
+
+								}
+
+							} else {
+
+								console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .uploadTexture()' );
+
+							}
+
+						} else {
+
+							if ( useTexStorage ) {
+
+								if ( dataReady ) {
+
+									state.texSubImage2D( _gl.TEXTURE_2D, i, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );
+
+								}
+
+							} else {
+
+								state.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
+
+							}
+
+						}
+
+					}
+
+				}
+
+			} else if ( texture.isDataArrayTexture ) {
+
+				if ( useTexStorage ) {
+
+					if ( allocateMemory ) {
+
+						state.texStorage3D( _gl.TEXTURE_2D_ARRAY, levels, glInternalFormat, image.width, image.height, image.depth );
+
+					}
+
+					if ( dataReady ) {
+
+						if ( texture.layerUpdates.size > 0 ) {
+
+							const layerByteLength = getByteLength( image.width, image.height, texture.format, texture.type );
+
+							for ( const layerIndex of texture.layerUpdates ) {
+
+								const layerData = image.data.subarray(
+									layerIndex * layerByteLength / image.data.BYTES_PER_ELEMENT,
+									( layerIndex + 1 ) * layerByteLength / image.data.BYTES_PER_ELEMENT
+								);
+								state.texSubImage3D( _gl.TEXTURE_2D_ARRAY, 0, 0, 0, layerIndex, image.width, image.height, 1, glFormat, glType, layerData );
+
+							}
+
+							texture.clearLayerUpdates();
+
+						} else {
+
+							state.texSubImage3D( _gl.TEXTURE_2D_ARRAY, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data );
+
+						}
+
+					}
+
+				} else {
+
+					state.texImage3D( _gl.TEXTURE_2D_ARRAY, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );
+
+				}
+
+			} else if ( texture.isData3DTexture ) {
+
+				if ( useTexStorage ) {
+
+					if ( allocateMemory ) {
+
+						state.texStorage3D( _gl.TEXTURE_3D, levels, glInternalFormat, image.width, image.height, image.depth );
+
+					}
+
+					if ( dataReady ) {
+
+						state.texSubImage3D( _gl.TEXTURE_3D, 0, 0, 0, 0, image.width, image.height, image.depth, glFormat, glType, image.data );
+
+					}
+
+				} else {
+
+					state.texImage3D( _gl.TEXTURE_3D, 0, glInternalFormat, image.width, image.height, image.depth, 0, glFormat, glType, image.data );
+
+				}
+
+			} else if ( texture.isFramebufferTexture ) {
+
+				if ( allocateMemory ) {
+
+					if ( useTexStorage ) {
+
+						state.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, image.width, image.height );
+
+					} else {
+
+						let width = image.width, height = image.height;
+
+						for ( let i = 0; i < levels; i ++ ) {
+
+							state.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, width, height, 0, glFormat, glType, null );
+
+							width >>= 1;
+							height >>= 1;
+
+						}
+
+					}
+
+				}
+
+			} else {
+
+				// regular Texture (image, video, canvas)
+
+				// use manually created mipmaps if available
+				// if there are no manual mipmaps
+				// set 0 level mipmap and then use GL to generate other mipmap levels
+
+				if ( mipmaps.length > 0 ) {
+
+					if ( useTexStorage && allocateMemory ) {
+
+						const dimensions = getDimensions( mipmaps[ 0 ] );
+
+						state.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, dimensions.width, dimensions.height );
+
+					}
+
+					for ( let i = 0, il = mipmaps.length; i < il; i ++ ) {
+
+						mipmap = mipmaps[ i ];
+
+						if ( useTexStorage ) {
+
+							if ( dataReady ) {
+
+								state.texSubImage2D( _gl.TEXTURE_2D, i, 0, 0, glFormat, glType, mipmap );
+
+							}
+
+						} else {
+
+							state.texImage2D( _gl.TEXTURE_2D, i, glInternalFormat, glFormat, glType, mipmap );
+
+						}
+
+					}
+
+					texture.generateMipmaps = false;
+
+				} else {
+
+					if ( useTexStorage ) {
+
+						if ( allocateMemory ) {
+
+							const dimensions = getDimensions( image );
+
+							state.texStorage2D( _gl.TEXTURE_2D, levels, glInternalFormat, dimensions.width, dimensions.height );
+
+						}
+
+						if ( dataReady ) {
+
+							state.texSubImage2D( _gl.TEXTURE_2D, 0, 0, 0, glFormat, glType, image );
+
+						}
+
+					} else {
+
+						state.texImage2D( _gl.TEXTURE_2D, 0, glInternalFormat, glFormat, glType, image );
+
+					}
+
+				}
+
+			}
+
+			if ( textureNeedsGenerateMipmaps( texture ) ) {
+
+				generateMipmap( textureType );
+
+			}
+
+			sourceProperties.__version = source.version;
+
+			if ( texture.onUpdate ) texture.onUpdate( texture );
+
+		}
+
+		textureProperties.__version = texture.version;
+
+	}
+
+	function uploadCubeTexture( textureProperties, texture, slot ) {
+
+		if ( texture.image.length !== 6 ) return;
+
+		const forceUpload = initTexture( textureProperties, texture );
+		const source = texture.source;
+
+		state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture, _gl.TEXTURE0 + slot );
+
+		const sourceProperties = properties.get( source );
+
+		if ( source.version !== sourceProperties.__version || forceUpload === true ) {
+
+			state.activeTexture( _gl.TEXTURE0 + slot );
+
+			const workingPrimaries = ColorManagement.getPrimaries( ColorManagement.workingColorSpace );
+			const texturePrimaries = texture.colorSpace === NoColorSpace ? null : ColorManagement.getPrimaries( texture.colorSpace );
+			const unpackConversion = texture.colorSpace === NoColorSpace || workingPrimaries === texturePrimaries ? _gl.NONE : _gl.BROWSER_DEFAULT_WEBGL;
+
+			_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, texture.flipY );
+			_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, texture.premultiplyAlpha );
+			_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, texture.unpackAlignment );
+			_gl.pixelStorei( _gl.UNPACK_COLORSPACE_CONVERSION_WEBGL, unpackConversion );
+
+			const isCompressed = ( texture.isCompressedTexture || texture.image[ 0 ].isCompressedTexture );
+			const isDataTexture = ( texture.image[ 0 ] && texture.image[ 0 ].isDataTexture );
+
+			const cubeImage = [];
+
+			for ( let i = 0; i < 6; i ++ ) {
+
+				if ( ! isCompressed && ! isDataTexture ) {
+
+					cubeImage[ i ] = resizeImage( texture.image[ i ], true, capabilities.maxCubemapSize );
+
+				} else {
+
+					cubeImage[ i ] = isDataTexture ? texture.image[ i ].image : texture.image[ i ];
+
+				}
+
+				cubeImage[ i ] = verifyColorSpace( texture, cubeImage[ i ] );
+
+			}
+
+			const image = cubeImage[ 0 ],
+				glFormat = utils.convert( texture.format, texture.colorSpace ),
+				glType = utils.convert( texture.type ),
+				glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.colorSpace );
+
+			const useTexStorage = ( texture.isVideoTexture !== true );
+			const allocateMemory = ( sourceProperties.__version === undefined ) || ( forceUpload === true );
+			const dataReady = source.dataReady;
+			let levels = getMipLevels( texture, image );
+
+			setTextureParameters( _gl.TEXTURE_CUBE_MAP, texture );
+
+			let mipmaps;
+
+			if ( isCompressed ) {
+
+				if ( useTexStorage && allocateMemory ) {
+
+					state.texStorage2D( _gl.TEXTURE_CUBE_MAP, levels, glInternalFormat, image.width, image.height );
+
+				}
+
+				for ( let i = 0; i < 6; i ++ ) {
+
+					mipmaps = cubeImage[ i ].mipmaps;
+
+					for ( let j = 0; j < mipmaps.length; j ++ ) {
+
+						const mipmap = mipmaps[ j ];
+
+						if ( texture.format !== RGBAFormat ) {
+
+							if ( glFormat !== null ) {
+
+								if ( useTexStorage ) {
+
+									if ( dataReady ) {
+
+										state.compressedTexSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, mipmap.data );
+
+									}
+
+								} else {
+
+									state.compressedTexImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, mipmap.data );
+
+								}
+
+							} else {
+
+								console.warn( 'THREE.WebGLRenderer: Attempt to load unsupported compressed texture format in .setTextureCube()' );
+
+							}
+
+						} else {
+
+							if ( useTexStorage ) {
+
+								if ( dataReady ) {
+
+									state.texSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, 0, 0, mipmap.width, mipmap.height, glFormat, glType, mipmap.data );
+
+								}
+
+							} else {
+
+								state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j, glInternalFormat, mipmap.width, mipmap.height, 0, glFormat, glType, mipmap.data );
+
+							}
+
+						}
+
+					}
+
+				}
+
+			} else {
+
+				mipmaps = texture.mipmaps;
+
+				if ( useTexStorage && allocateMemory ) {
+
+					// TODO: Uniformly handle mipmap definitions
+					// Normal textures and compressed cube textures define base level + mips with their mipmap array
+					// Uncompressed cube textures use their mipmap array only for mips (no base level)
+
+					if ( mipmaps.length > 0 ) levels ++;
+
+					const dimensions = getDimensions( cubeImage[ 0 ] );
+
+					state.texStorage2D( _gl.TEXTURE_CUBE_MAP, levels, glInternalFormat, dimensions.width, dimensions.height );
+
+				}
+
+				for ( let i = 0; i < 6; i ++ ) {
+
+					if ( isDataTexture ) {
+
+						if ( useTexStorage ) {
+
+							if ( dataReady ) {
+
+								state.texSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, 0, 0, cubeImage[ i ].width, cubeImage[ i ].height, glFormat, glType, cubeImage[ i ].data );
+
+							}
+
+						} else {
+
+							state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, cubeImage[ i ].width, cubeImage[ i ].height, 0, glFormat, glType, cubeImage[ i ].data );
+
+						}
+
+						for ( let j = 0; j < mipmaps.length; j ++ ) {
+
+							const mipmap = mipmaps[ j ];
+							const mipmapImage = mipmap.image[ i ].image;
+
+							if ( useTexStorage ) {
+
+								if ( dataReady ) {
+
+									state.texSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, 0, 0, mipmapImage.width, mipmapImage.height, glFormat, glType, mipmapImage.data );
+
+								}
+
+							} else {
+
+								state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, mipmapImage.width, mipmapImage.height, 0, glFormat, glType, mipmapImage.data );
+
+							}
+
+						}
+
+					} else {
+
+						if ( useTexStorage ) {
+
+							if ( dataReady ) {
+
+								state.texSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, 0, 0, glFormat, glType, cubeImage[ i ] );
+
+							}
+
+						} else {
+
+							state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0, glInternalFormat, glFormat, glType, cubeImage[ i ] );
+
+						}
+
+						for ( let j = 0; j < mipmaps.length; j ++ ) {
+
+							const mipmap = mipmaps[ j ];
+
+							if ( useTexStorage ) {
+
+								if ( dataReady ) {
+
+									state.texSubImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, 0, 0, glFormat, glType, mipmap.image[ i ] );
+
+								}
+
+							} else {
+
+								state.texImage2D( _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, j + 1, glInternalFormat, glFormat, glType, mipmap.image[ i ] );
+
+							}
+
+						}
+
+					}
+
+				}
+
+			}
+
+			if ( textureNeedsGenerateMipmaps( texture ) ) {
+
+				// We assume images for cube map have the same size.
+				generateMipmap( _gl.TEXTURE_CUBE_MAP );
+
+			}
+
+			sourceProperties.__version = source.version;
+
+			if ( texture.onUpdate ) texture.onUpdate( texture );
+
+		}
+
+		textureProperties.__version = texture.version;
+
+	}
+
+	// Render targets
+
+	// Setup storage for target texture and bind it to correct framebuffer
+	function setupFrameBufferTexture( framebuffer, renderTarget, texture, attachment, textureTarget, level ) {
+
+		const glFormat = utils.convert( texture.format, texture.colorSpace );
+		const glType = utils.convert( texture.type );
+		const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.colorSpace );
+		const renderTargetProperties = properties.get( renderTarget );
+
+		if ( ! renderTargetProperties.__hasExternalTextures ) {
+
+			const width = Math.max( 1, renderTarget.width >> level );
+			const height = Math.max( 1, renderTarget.height >> level );
+
+			if ( textureTarget === _gl.TEXTURE_3D || textureTarget === _gl.TEXTURE_2D_ARRAY ) {
+
+				state.texImage3D( textureTarget, level, glInternalFormat, width, height, renderTarget.depth, 0, glFormat, glType, null );
+
+			} else {
+
+				state.texImage2D( textureTarget, level, glInternalFormat, width, height, 0, glFormat, glType, null );
+
+			}
+
+		}
+
+		state.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
+
+		if ( useMultisampledRTT( renderTarget ) ) {
+
+			multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( texture ).__webglTexture, 0, getRenderTargetSamples( renderTarget ) );
+
+		} else if ( textureTarget === _gl.TEXTURE_2D || ( textureTarget >= _gl.TEXTURE_CUBE_MAP_POSITIVE_X && textureTarget <= _gl.TEXTURE_CUBE_MAP_NEGATIVE_Z ) ) { // see #24753
+
+			_gl.framebufferTexture2D( _gl.FRAMEBUFFER, attachment, textureTarget, properties.get( texture ).__webglTexture, level );
+
+		}
+
+		state.bindFramebuffer( _gl.FRAMEBUFFER, null );
+
+	}
+
+	// Setup storage for internal depth/stencil buffers and bind to correct framebuffer
+	function setupRenderBufferStorage( renderbuffer, renderTarget, isMultisample ) {
+
+		_gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer );
+
+		if ( renderTarget.depthBuffer ) {
+
+			// retrieve the depth attachment types
+			const depthTexture = renderTarget.depthTexture;
+			const depthType = depthTexture && depthTexture.isDepthTexture ? depthTexture.type : null;
+			const glInternalFormat = getInternalDepthFormat( renderTarget.stencilBuffer, depthType );
+			const glAttachmentType = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT;
+
+			// set up the attachment
+			const samples = getRenderTargetSamples( renderTarget );
+			const isUseMultisampledRTT = useMultisampledRTT( renderTarget );
+			if ( isUseMultisampledRTT ) {
+
+				multisampledRTTExt.renderbufferStorageMultisampleEXT( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height );
+
+			} else if ( isMultisample ) {
+
+				_gl.renderbufferStorageMultisample( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height );
+
+			} else {
+
+				_gl.renderbufferStorage( _gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height );
+
+			}
+
+			_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, glAttachmentType, _gl.RENDERBUFFER, renderbuffer );
+
+		} else {
+
+			const textures = renderTarget.textures;
+
+			for ( let i = 0; i < textures.length; i ++ ) {
+
+				const texture = textures[ i ];
+
+				const glFormat = utils.convert( texture.format, texture.colorSpace );
+				const glType = utils.convert( texture.type );
+				const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.colorSpace );
+				const samples = getRenderTargetSamples( renderTarget );
+
+				if ( isMultisample && useMultisampledRTT( renderTarget ) === false ) {
+
+					_gl.renderbufferStorageMultisample( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height );
+
+				} else if ( useMultisampledRTT( renderTarget ) ) {
+
+					multisampledRTTExt.renderbufferStorageMultisampleEXT( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height );
+
+				} else {
+
+					_gl.renderbufferStorage( _gl.RENDERBUFFER, glInternalFormat, renderTarget.width, renderTarget.height );
+
+				}
+
+			}
+
+		}
+
+		_gl.bindRenderbuffer( _gl.RENDERBUFFER, null );
+
+	}
+
+	// Setup resources for a Depth Texture for a FBO (needs an extension)
+	function setupDepthTexture( framebuffer, renderTarget ) {
+
+		const isCube = ( renderTarget && renderTarget.isWebGLCubeRenderTarget );
+		if ( isCube ) throw new Error( 'Depth Texture with cube render targets is not supported' );
+
+		state.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
+
+		if ( ! ( renderTarget.depthTexture && renderTarget.depthTexture.isDepthTexture ) ) {
+
+			throw new Error( 'renderTarget.depthTexture must be an instance of THREE.DepthTexture' );
+
+		}
+
+		// upload an empty depth texture with framebuffer size
+		if ( ! properties.get( renderTarget.depthTexture ).__webglTexture ||
+				renderTarget.depthTexture.image.width !== renderTarget.width ||
+				renderTarget.depthTexture.image.height !== renderTarget.height ) {
+
+			renderTarget.depthTexture.image.width = renderTarget.width;
+			renderTarget.depthTexture.image.height = renderTarget.height;
+			renderTarget.depthTexture.needsUpdate = true;
+
+		}
+
+		setTexture2D( renderTarget.depthTexture, 0 );
+
+		const webglDepthTexture = properties.get( renderTarget.depthTexture ).__webglTexture;
+		const samples = getRenderTargetSamples( renderTarget );
+
+		if ( renderTarget.depthTexture.format === DepthFormat ) {
+
+			if ( useMultisampledRTT( renderTarget ) ) {
+
+				multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0, samples );
+
+			} else {
+
+				_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );
+
+			}
+
+		} else if ( renderTarget.depthTexture.format === DepthStencilFormat ) {
+
+			if ( useMultisampledRTT( renderTarget ) ) {
+
+				multisampledRTTExt.framebufferTexture2DMultisampleEXT( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0, samples );
+
+			} else {
+
+				_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.DEPTH_STENCIL_ATTACHMENT, _gl.TEXTURE_2D, webglDepthTexture, 0 );
+
+			}
+
+		} else {
+
+			throw new Error( 'Unknown depthTexture format' );
+
+		}
+
+	}
+
+	// Setup GL resources for a non-texture depth buffer
+	function setupDepthRenderbuffer( renderTarget ) {
+
+		const renderTargetProperties = properties.get( renderTarget );
+		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );
+
+		// if the bound depth texture has changed
+		if ( renderTargetProperties.__boundDepthTexture !== renderTarget.depthTexture ) {
+
+			// fire the dispose event to get rid of stored state associated with the previously bound depth buffer
+			const depthTexture = renderTarget.depthTexture;
+			if ( renderTargetProperties.__depthDisposeCallback ) {
+
+				renderTargetProperties.__depthDisposeCallback();
+
+			}
+
+			// set up dispose listeners to track when the currently attached buffer is implicitly unbound
+			if ( depthTexture ) {
+
+				const disposeEvent = () => {
+
+					delete renderTargetProperties.__boundDepthTexture;
+					delete renderTargetProperties.__depthDisposeCallback;
+					depthTexture.removeEventListener( 'dispose', disposeEvent );
+
+				};
+
+				depthTexture.addEventListener( 'dispose', disposeEvent );
+				renderTargetProperties.__depthDisposeCallback = disposeEvent;
+
+			}
+
+			renderTargetProperties.__boundDepthTexture = depthTexture;
+
+		}
+
+		if ( renderTarget.depthTexture && ! renderTargetProperties.__autoAllocateDepthBuffer ) {
+
+			if ( isCube ) throw new Error( 'target.depthTexture not supported in Cube render targets' );
+
+			setupDepthTexture( renderTargetProperties.__webglFramebuffer, renderTarget );
+
+		} else {
+
+			if ( isCube ) {
+
+				renderTargetProperties.__webglDepthbuffer = [];
+
+				for ( let i = 0; i < 6; i ++ ) {
+
+					state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer[ i ] );
+
+					if ( renderTargetProperties.__webglDepthbuffer[ i ] === undefined ) {
+
+						renderTargetProperties.__webglDepthbuffer[ i ] = _gl.createRenderbuffer();
+						setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer[ i ], renderTarget, false );
+
+					} else {
+
+						// attach buffer if it's been created already
+						const glAttachmentType = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT;
+						const renderbuffer = renderTargetProperties.__webglDepthbuffer[ i ];
+						_gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer );
+						_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, glAttachmentType, _gl.RENDERBUFFER, renderbuffer );
+
+					}
+
+				}
+
+			} else {
+
+				state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer );
+
+				if ( renderTargetProperties.__webglDepthbuffer === undefined ) {
+
+					renderTargetProperties.__webglDepthbuffer = _gl.createRenderbuffer();
+					setupRenderBufferStorage( renderTargetProperties.__webglDepthbuffer, renderTarget, false );
+
+				} else {
+
+					// attach buffer if it's been created already
+					const glAttachmentType = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT;
+					const renderbuffer = renderTargetProperties.__webglDepthbuffer;
+					_gl.bindRenderbuffer( _gl.RENDERBUFFER, renderbuffer );
+					_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, glAttachmentType, _gl.RENDERBUFFER, renderbuffer );
+
+				}
+
+			}
+
+		}
+
+		state.bindFramebuffer( _gl.FRAMEBUFFER, null );
+
+	}
+
+	// rebind framebuffer with external textures
+	function rebindTextures( renderTarget, colorTexture, depthTexture ) {
+
+		const renderTargetProperties = properties.get( renderTarget );
+
+		if ( colorTexture !== undefined ) {
+
+			setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, renderTarget.texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_2D, 0 );
+
+		}
+
+		if ( depthTexture !== undefined ) {
+
+			setupDepthRenderbuffer( renderTarget );
+
+		}
+
+	}
+
+	// Set up GL resources for the render target
+	function setupRenderTarget( renderTarget ) {
+
+		const texture = renderTarget.texture;
+
+		const renderTargetProperties = properties.get( renderTarget );
+		const textureProperties = properties.get( texture );
+
+		renderTarget.addEventListener( 'dispose', onRenderTargetDispose );
+
+		const textures = renderTarget.textures;
+
+		const isCube = ( renderTarget.isWebGLCubeRenderTarget === true );
+		const isMultipleRenderTargets = ( textures.length > 1 );
+
+		if ( ! isMultipleRenderTargets ) {
+
+			if ( textureProperties.__webglTexture === undefined ) {
+
+				textureProperties.__webglTexture = _gl.createTexture();
+
+			}
+
+			textureProperties.__version = texture.version;
+			info.memory.textures ++;
+
+		}
+
+		// Setup framebuffer
+
+		if ( isCube ) {
+
+			renderTargetProperties.__webglFramebuffer = [];
+
+			for ( let i = 0; i < 6; i ++ ) {
+
+				if ( texture.mipmaps && texture.mipmaps.length > 0 ) {
+
+					renderTargetProperties.__webglFramebuffer[ i ] = [];
+
+					for ( let level = 0; level < texture.mipmaps.length; level ++ ) {
+
+						renderTargetProperties.__webglFramebuffer[ i ][ level ] = _gl.createFramebuffer();
+
+					}
+
+				} else {
+
+					renderTargetProperties.__webglFramebuffer[ i ] = _gl.createFramebuffer();
+
+				}
+
+			}
+
+		} else {
+
+			if ( texture.mipmaps && texture.mipmaps.length > 0 ) {
+
+				renderTargetProperties.__webglFramebuffer = [];
+
+				for ( let level = 0; level < texture.mipmaps.length; level ++ ) {
+
+					renderTargetProperties.__webglFramebuffer[ level ] = _gl.createFramebuffer();
+
+				}
+
+			} else {
+
+				renderTargetProperties.__webglFramebuffer = _gl.createFramebuffer();
+
+			}
+
+			if ( isMultipleRenderTargets ) {
+
+				for ( let i = 0, il = textures.length; i < il; i ++ ) {
+
+					const attachmentProperties = properties.get( textures[ i ] );
+
+					if ( attachmentProperties.__webglTexture === undefined ) {
+
+						attachmentProperties.__webglTexture = _gl.createTexture();
+
+						info.memory.textures ++;
+
+					}
+
+				}
+
+			}
+
+			if ( ( renderTarget.samples > 0 ) && useMultisampledRTT( renderTarget ) === false ) {
+
+				renderTargetProperties.__webglMultisampledFramebuffer = _gl.createFramebuffer();
+				renderTargetProperties.__webglColorRenderbuffer = [];
+
+				state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer );
+
+				for ( let i = 0; i < textures.length; i ++ ) {
+
+					const texture = textures[ i ];
+					renderTargetProperties.__webglColorRenderbuffer[ i ] = _gl.createRenderbuffer();
+
+					_gl.bindRenderbuffer( _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[ i ] );
+
+					const glFormat = utils.convert( texture.format, texture.colorSpace );
+					const glType = utils.convert( texture.type );
+					const glInternalFormat = getInternalFormat( texture.internalFormat, glFormat, glType, texture.colorSpace, renderTarget.isXRRenderTarget === true );
+					const samples = getRenderTargetSamples( renderTarget );
+					_gl.renderbufferStorageMultisample( _gl.RENDERBUFFER, samples, glInternalFormat, renderTarget.width, renderTarget.height );
+
+					_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[ i ] );
+
+				}
+
+				_gl.bindRenderbuffer( _gl.RENDERBUFFER, null );
+
+				if ( renderTarget.depthBuffer ) {
+
+					renderTargetProperties.__webglDepthRenderbuffer = _gl.createRenderbuffer();
+					setupRenderBufferStorage( renderTargetProperties.__webglDepthRenderbuffer, renderTarget, true );
+
+				}
+
+				state.bindFramebuffer( _gl.FRAMEBUFFER, null );
+
+			}
+
+		}
+
+		// Setup color buffer
+
+		if ( isCube ) {
+
+			state.bindTexture( _gl.TEXTURE_CUBE_MAP, textureProperties.__webglTexture );
+			setTextureParameters( _gl.TEXTURE_CUBE_MAP, texture );
+
+			for ( let i = 0; i < 6; i ++ ) {
+
+				if ( texture.mipmaps && texture.mipmaps.length > 0 ) {
+
+					for ( let level = 0; level < texture.mipmaps.length; level ++ ) {
+
+						setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ][ level ], renderTarget, texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, level );
+
+					}
+
+				} else {
+
+					setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ i ], renderTarget, texture, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + i, 0 );
+
+				}
+
+			}
+
+			if ( textureNeedsGenerateMipmaps( texture ) ) {
+
+				generateMipmap( _gl.TEXTURE_CUBE_MAP );
+
+			}
+
+			state.unbindTexture();
+
+		} else if ( isMultipleRenderTargets ) {
+
+			for ( let i = 0, il = textures.length; i < il; i ++ ) {
+
+				const attachment = textures[ i ];
+				const attachmentProperties = properties.get( attachment );
+
+				state.bindTexture( _gl.TEXTURE_2D, attachmentProperties.__webglTexture );
+				setTextureParameters( _gl.TEXTURE_2D, attachment );
+				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, attachment, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D, 0 );
+
+				if ( textureNeedsGenerateMipmaps( attachment ) ) {
+
+					generateMipmap( _gl.TEXTURE_2D );
+
+				}
+
+			}
+
+			state.unbindTexture();
+
+		} else {
+
+			let glTextureType = _gl.TEXTURE_2D;
+
+			if ( renderTarget.isWebGL3DRenderTarget || renderTarget.isWebGLArrayRenderTarget ) {
+
+				glTextureType = renderTarget.isWebGL3DRenderTarget ? _gl.TEXTURE_3D : _gl.TEXTURE_2D_ARRAY;
+
+			}
+
+			state.bindTexture( glTextureType, textureProperties.__webglTexture );
+			setTextureParameters( glTextureType, texture );
+
+			if ( texture.mipmaps && texture.mipmaps.length > 0 ) {
+
+				for ( let level = 0; level < texture.mipmaps.length; level ++ ) {
+
+					setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer[ level ], renderTarget, texture, _gl.COLOR_ATTACHMENT0, glTextureType, level );
+
+				}
+
+			} else {
+
+				setupFrameBufferTexture( renderTargetProperties.__webglFramebuffer, renderTarget, texture, _gl.COLOR_ATTACHMENT0, glTextureType, 0 );
+
+			}
+
+			if ( textureNeedsGenerateMipmaps( texture ) ) {
+
+				generateMipmap( glTextureType );
+
+			}
+
+			state.unbindTexture();
+
+		}
+
+		// Setup depth and stencil buffers
+
+		if ( renderTarget.depthBuffer ) {
+
+			setupDepthRenderbuffer( renderTarget );
+
+		}
+
+	}
+
+	function updateRenderTargetMipmap( renderTarget ) {
+
+		const textures = renderTarget.textures;
+
+		for ( let i = 0, il = textures.length; i < il; i ++ ) {
+
+			const texture = textures[ i ];
+
+			if ( textureNeedsGenerateMipmaps( texture ) ) {
+
+				const target = renderTarget.isWebGLCubeRenderTarget ? _gl.TEXTURE_CUBE_MAP : _gl.TEXTURE_2D;
+				const webglTexture = properties.get( texture ).__webglTexture;
+
+				state.bindTexture( target, webglTexture );
+				generateMipmap( target );
+				state.unbindTexture();
+
+			}
+
+		}
+
+	}
+
+	const invalidationArrayRead = [];
+	const invalidationArrayDraw = [];
+
+	function updateMultisampleRenderTarget( renderTarget ) {
+
+		if ( renderTarget.samples > 0 ) {
+
+			if ( useMultisampledRTT( renderTarget ) === false ) {
+
+				const textures = renderTarget.textures;
+				const width = renderTarget.width;
+				const height = renderTarget.height;
+				let mask = _gl.COLOR_BUFFER_BIT;
+				const depthStyle = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT;
+				const renderTargetProperties = properties.get( renderTarget );
+				const isMultipleRenderTargets = ( textures.length > 1 );
+
+				// If MRT we need to remove FBO attachments
+				if ( isMultipleRenderTargets ) {
+
+					for ( let i = 0; i < textures.length; i ++ ) {
+
+						state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer );
+						_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.RENDERBUFFER, null );
+
+						state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer );
+						_gl.framebufferTexture2D( _gl.DRAW_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D, null, 0 );
+
+					}
+
+				}
+
+				state.bindFramebuffer( _gl.READ_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer );
+				state.bindFramebuffer( _gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglFramebuffer );
+
+				for ( let i = 0; i < textures.length; i ++ ) {
+
+					if ( renderTarget.resolveDepthBuffer ) {
+
+						if ( renderTarget.depthBuffer ) mask |= _gl.DEPTH_BUFFER_BIT;
+
+						// resolving stencil is slow with a D3D backend. disable it for all transmission render targets (see #27799)
+
+						if ( renderTarget.stencilBuffer && renderTarget.resolveStencilBuffer ) mask |= _gl.STENCIL_BUFFER_BIT;
+
+					}
+
+					if ( isMultipleRenderTargets ) {
+
+						_gl.framebufferRenderbuffer( _gl.READ_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[ i ] );
+
+						const webglTexture = properties.get( textures[ i ] ).__webglTexture;
+						_gl.framebufferTexture2D( _gl.DRAW_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_2D, webglTexture, 0 );
+
+					}
+
+					_gl.blitFramebuffer( 0, 0, width, height, 0, 0, width, height, mask, _gl.NEAREST );
+
+					if ( supportsInvalidateFramebuffer === true ) {
+
+						invalidationArrayRead.length = 0;
+						invalidationArrayDraw.length = 0;
+
+						invalidationArrayRead.push( _gl.COLOR_ATTACHMENT0 + i );
+
+						if ( renderTarget.depthBuffer && renderTarget.resolveDepthBuffer === false ) {
+
+							invalidationArrayRead.push( depthStyle );
+							invalidationArrayDraw.push( depthStyle );
+
+							_gl.invalidateFramebuffer( _gl.DRAW_FRAMEBUFFER, invalidationArrayDraw );
+
+						}
+
+						_gl.invalidateFramebuffer( _gl.READ_FRAMEBUFFER, invalidationArrayRead );
+
+					}
+
+				}
+
+				state.bindFramebuffer( _gl.READ_FRAMEBUFFER, null );
+				state.bindFramebuffer( _gl.DRAW_FRAMEBUFFER, null );
+
+				// If MRT since pre-blit we removed the FBO we need to reconstruct the attachments
+				if ( isMultipleRenderTargets ) {
+
+					for ( let i = 0; i < textures.length; i ++ ) {
+
+						state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer );
+						_gl.framebufferRenderbuffer( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.RENDERBUFFER, renderTargetProperties.__webglColorRenderbuffer[ i ] );
+
+						const webglTexture = properties.get( textures[ i ] ).__webglTexture;
+
+						state.bindFramebuffer( _gl.FRAMEBUFFER, renderTargetProperties.__webglFramebuffer );
+						_gl.framebufferTexture2D( _gl.DRAW_FRAMEBUFFER, _gl.COLOR_ATTACHMENT0 + i, _gl.TEXTURE_2D, webglTexture, 0 );
+
+					}
+
+				}
+
+				state.bindFramebuffer( _gl.DRAW_FRAMEBUFFER, renderTargetProperties.__webglMultisampledFramebuffer );
+
+			} else {
+
+				if ( renderTarget.depthBuffer && renderTarget.resolveDepthBuffer === false && supportsInvalidateFramebuffer ) {
+
+					const depthStyle = renderTarget.stencilBuffer ? _gl.DEPTH_STENCIL_ATTACHMENT : _gl.DEPTH_ATTACHMENT;
+
+					_gl.invalidateFramebuffer( _gl.DRAW_FRAMEBUFFER, [ depthStyle ] );
+
+				}
+
+			}
+
+		}
+
+	}
+
+	function getRenderTargetSamples( renderTarget ) {
+
+		return Math.min( capabilities.maxSamples, renderTarget.samples );
+
+	}
+
+	function useMultisampledRTT( renderTarget ) {
+
+		const renderTargetProperties = properties.get( renderTarget );
+
+		return renderTarget.samples > 0 && extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true && renderTargetProperties.__useRenderToTexture !== false;
+
+	}
+
+	function updateVideoTexture( texture ) {
+
+		const frame = info.render.frame;
+
+		// Check the last frame we updated the VideoTexture
+
+		if ( _videoTextures.get( texture ) !== frame ) {
+
+			_videoTextures.set( texture, frame );
+			texture.update();
+
+		}
+
+	}
+
+	function verifyColorSpace( texture, image ) {
+
+		const colorSpace = texture.colorSpace;
+		const format = texture.format;
+		const type = texture.type;
+
+		if ( texture.isCompressedTexture === true || texture.isVideoTexture === true ) return image;
+
+		if ( colorSpace !== LinearSRGBColorSpace && colorSpace !== NoColorSpace ) {
+
+			// sRGB
+
+			if ( ColorManagement.getTransfer( colorSpace ) === SRGBTransfer ) {
+
+				// in WebGL 2 uncompressed textures can only be sRGB encoded if they have the RGBA8 format
+
+				if ( format !== RGBAFormat || type !== UnsignedByteType ) {
+
+					console.warn( 'THREE.WebGLTextures: sRGB encoded textures have to use RGBAFormat and UnsignedByteType.' );
+
+				}
+
+			} else {
+
+				console.error( 'THREE.WebGLTextures: Unsupported texture color space:', colorSpace );
+
+			}
+
+		}
+
+		return image;
+
+	}
+
+	function getDimensions( image ) {
+
+		if ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) {
+
+			// if intrinsic data are not available, fallback to width/height
+
+			_imageDimensions.width = image.naturalWidth || image.width;
+			_imageDimensions.height = image.naturalHeight || image.height;
+
+		} else if ( typeof VideoFrame !== 'undefined' && image instanceof VideoFrame ) {
+
+			_imageDimensions.width = image.displayWidth;
+			_imageDimensions.height = image.displayHeight;
+
+		} else {
+
+			_imageDimensions.width = image.width;
+			_imageDimensions.height = image.height;
+
+		}
+
+		return _imageDimensions;
+
+	}
+
+	//
+
+	this.allocateTextureUnit = allocateTextureUnit;
+	this.resetTextureUnits = resetTextureUnits;
+
+	this.setTexture2D = setTexture2D;
+	this.setTexture2DArray = setTexture2DArray;
+	this.setTexture3D = setTexture3D;
+	this.setTextureCube = setTextureCube;
+	this.rebindTextures = rebindTextures;
+	this.setupRenderTarget = setupRenderTarget;
+	this.updateRenderTargetMipmap = updateRenderTargetMipmap;
+	this.updateMultisampleRenderTarget = updateMultisampleRenderTarget;
+	this.setupDepthRenderbuffer = setupDepthRenderbuffer;
+	this.setupFrameBufferTexture = setupFrameBufferTexture;
+	this.useMultisampledRTT = useMultisampledRTT;
+
+}
+
+function WebGLUtils( gl, extensions ) {
+
+	function convert( p, colorSpace = NoColorSpace ) {
+
+		let extension;
+
+		const transfer = ColorManagement.getTransfer( colorSpace );
+
+		if ( p === UnsignedByteType ) return gl.UNSIGNED_BYTE;
+		if ( p === UnsignedShort4444Type ) return gl.UNSIGNED_SHORT_4_4_4_4;
+		if ( p === UnsignedShort5551Type ) return gl.UNSIGNED_SHORT_5_5_5_1;
+		if ( p === UnsignedInt5999Type ) return gl.UNSIGNED_INT_5_9_9_9_REV;
+
+		if ( p === ByteType ) return gl.BYTE;
+		if ( p === ShortType ) return gl.SHORT;
+		if ( p === UnsignedShortType ) return gl.UNSIGNED_SHORT;
+		if ( p === IntType ) return gl.INT;
+		if ( p === UnsignedIntType ) return gl.UNSIGNED_INT;
+		if ( p === FloatType ) return gl.FLOAT;
+		if ( p === HalfFloatType ) return gl.HALF_FLOAT;
+
+		if ( p === AlphaFormat ) return gl.ALPHA;
+		if ( p === RGBFormat ) return gl.RGB;
+		if ( p === RGBAFormat ) return gl.RGBA;
+		if ( p === LuminanceFormat ) return gl.LUMINANCE;
+		if ( p === LuminanceAlphaFormat ) return gl.LUMINANCE_ALPHA;
+		if ( p === DepthFormat ) return gl.DEPTH_COMPONENT;
+		if ( p === DepthStencilFormat ) return gl.DEPTH_STENCIL;
+
+		// WebGL2 formats.
+
+		if ( p === RedFormat ) return gl.RED;
+		if ( p === RedIntegerFormat ) return gl.RED_INTEGER;
+		if ( p === RGFormat ) return gl.RG;
+		if ( p === RGIntegerFormat ) return gl.RG_INTEGER;
+		if ( p === RGBAIntegerFormat ) return gl.RGBA_INTEGER;
+
+		// S3TC
+
+		if ( p === RGB_S3TC_DXT1_Format || p === RGBA_S3TC_DXT1_Format || p === RGBA_S3TC_DXT3_Format || p === RGBA_S3TC_DXT5_Format ) {
+
+			if ( transfer === SRGBTransfer ) {
+
+				extension = extensions.get( 'WEBGL_compressed_texture_s3tc_srgb' );
+
+				if ( extension !== null ) {
+
+					if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_SRGB_S3TC_DXT1_EXT;
+					if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT1_EXT;
+					if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT3_EXT;
+					if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_SRGB_ALPHA_S3TC_DXT5_EXT;
+
+				} else {
+
+					return null;
+
+				}
+
+			} else {
+
+				extension = extensions.get( 'WEBGL_compressed_texture_s3tc' );
+
+				if ( extension !== null ) {
+
+					if ( p === RGB_S3TC_DXT1_Format ) return extension.COMPRESSED_RGB_S3TC_DXT1_EXT;
+					if ( p === RGBA_S3TC_DXT1_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT1_EXT;
+					if ( p === RGBA_S3TC_DXT3_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT3_EXT;
+					if ( p === RGBA_S3TC_DXT5_Format ) return extension.COMPRESSED_RGBA_S3TC_DXT5_EXT;
+
+				} else {
+
+					return null;
+
+				}
+
+			}
+
+		}
+
+		// PVRTC
+
+		if ( p === RGB_PVRTC_4BPPV1_Format || p === RGB_PVRTC_2BPPV1_Format || p === RGBA_PVRTC_4BPPV1_Format || p === RGBA_PVRTC_2BPPV1_Format ) {
+
+			extension = extensions.get( 'WEBGL_compressed_texture_pvrtc' );
+
+			if ( extension !== null ) {
+
+				if ( p === RGB_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_4BPPV1_IMG;
+				if ( p === RGB_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGB_PVRTC_2BPPV1_IMG;
+				if ( p === RGBA_PVRTC_4BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_4BPPV1_IMG;
+				if ( p === RGBA_PVRTC_2BPPV1_Format ) return extension.COMPRESSED_RGBA_PVRTC_2BPPV1_IMG;
+
+			} else {
+
+				return null;
+
+			}
+
+		}
+
+		// ETC
+
+		if ( p === RGB_ETC1_Format || p === RGB_ETC2_Format || p === RGBA_ETC2_EAC_Format ) {
+
+			extension = extensions.get( 'WEBGL_compressed_texture_etc' );
+
+			if ( extension !== null ) {
+
+				if ( p === RGB_ETC1_Format || p === RGB_ETC2_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ETC2 : extension.COMPRESSED_RGB8_ETC2;
+				if ( p === RGBA_ETC2_EAC_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ETC2_EAC : extension.COMPRESSED_RGBA8_ETC2_EAC;
+
+			} else {
+
+				return null;
+
+			}
+
+		}
+
+		// ASTC
+
+		if ( p === RGBA_ASTC_4x4_Format || p === RGBA_ASTC_5x4_Format || p === RGBA_ASTC_5x5_Format ||
+			p === RGBA_ASTC_6x5_Format || p === RGBA_ASTC_6x6_Format || p === RGBA_ASTC_8x5_Format ||
+			p === RGBA_ASTC_8x6_Format || p === RGBA_ASTC_8x8_Format || p === RGBA_ASTC_10x5_Format ||
+			p === RGBA_ASTC_10x6_Format || p === RGBA_ASTC_10x8_Format || p === RGBA_ASTC_10x10_Format ||
+			p === RGBA_ASTC_12x10_Format || p === RGBA_ASTC_12x12_Format ) {
+
+			extension = extensions.get( 'WEBGL_compressed_texture_astc' );
+
+			if ( extension !== null ) {
+
+				if ( p === RGBA_ASTC_4x4_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_4x4_KHR : extension.COMPRESSED_RGBA_ASTC_4x4_KHR;
+				if ( p === RGBA_ASTC_5x4_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x4_KHR : extension.COMPRESSED_RGBA_ASTC_5x4_KHR;
+				if ( p === RGBA_ASTC_5x5_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_5x5_KHR : extension.COMPRESSED_RGBA_ASTC_5x5_KHR;
+				if ( p === RGBA_ASTC_6x5_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x5_KHR : extension.COMPRESSED_RGBA_ASTC_6x5_KHR;
+				if ( p === RGBA_ASTC_6x6_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_6x6_KHR : extension.COMPRESSED_RGBA_ASTC_6x6_KHR;
+				if ( p === RGBA_ASTC_8x5_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x5_KHR : extension.COMPRESSED_RGBA_ASTC_8x5_KHR;
+				if ( p === RGBA_ASTC_8x6_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x6_KHR : extension.COMPRESSED_RGBA_ASTC_8x6_KHR;
+				if ( p === RGBA_ASTC_8x8_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_8x8_KHR : extension.COMPRESSED_RGBA_ASTC_8x8_KHR;
+				if ( p === RGBA_ASTC_10x5_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x5_KHR : extension.COMPRESSED_RGBA_ASTC_10x5_KHR;
+				if ( p === RGBA_ASTC_10x6_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x6_KHR : extension.COMPRESSED_RGBA_ASTC_10x6_KHR;
+				if ( p === RGBA_ASTC_10x8_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x8_KHR : extension.COMPRESSED_RGBA_ASTC_10x8_KHR;
+				if ( p === RGBA_ASTC_10x10_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_10x10_KHR : extension.COMPRESSED_RGBA_ASTC_10x10_KHR;
+				if ( p === RGBA_ASTC_12x10_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x10_KHR : extension.COMPRESSED_RGBA_ASTC_12x10_KHR;
+				if ( p === RGBA_ASTC_12x12_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB8_ALPHA8_ASTC_12x12_KHR : extension.COMPRESSED_RGBA_ASTC_12x12_KHR;
+
+			} else {
+
+				return null;
+
+			}
+
+		}
+
+		// BPTC
+
+		if ( p === RGBA_BPTC_Format || p === RGB_BPTC_SIGNED_Format || p === RGB_BPTC_UNSIGNED_Format ) {
+
+			extension = extensions.get( 'EXT_texture_compression_bptc' );
+
+			if ( extension !== null ) {
+
+				if ( p === RGBA_BPTC_Format ) return ( transfer === SRGBTransfer ) ? extension.COMPRESSED_SRGB_ALPHA_BPTC_UNORM_EXT : extension.COMPRESSED_RGBA_BPTC_UNORM_EXT;
+				if ( p === RGB_BPTC_SIGNED_Format ) return extension.COMPRESSED_RGB_BPTC_SIGNED_FLOAT_EXT;
+				if ( p === RGB_BPTC_UNSIGNED_Format ) return extension.COMPRESSED_RGB_BPTC_UNSIGNED_FLOAT_EXT;
+
+			} else {
+
+				return null;
+
+			}
+
+		}
+
+		// RGTC
+
+		if ( p === RED_RGTC1_Format || p === SIGNED_RED_RGTC1_Format || p === RED_GREEN_RGTC2_Format || p === SIGNED_RED_GREEN_RGTC2_Format ) {
+
+			extension = extensions.get( 'EXT_texture_compression_rgtc' );
+
+			if ( extension !== null ) {
+
+				if ( p === RGBA_BPTC_Format ) return extension.COMPRESSED_RED_RGTC1_EXT;
+				if ( p === SIGNED_RED_RGTC1_Format ) return extension.COMPRESSED_SIGNED_RED_RGTC1_EXT;
+				if ( p === RED_GREEN_RGTC2_Format ) return extension.COMPRESSED_RED_GREEN_RGTC2_EXT;
+				if ( p === SIGNED_RED_GREEN_RGTC2_Format ) return extension.COMPRESSED_SIGNED_RED_GREEN_RGTC2_EXT;
+
+			} else {
+
+				return null;
+
+			}
+
+		}
+
+		//
+
+		if ( p === UnsignedInt248Type ) return gl.UNSIGNED_INT_24_8;
+
+		// if "p" can't be resolved, assume the user defines a WebGL constant as a string (fallback/workaround for packed RGB formats)
+
+		return ( gl[ p ] !== undefined ) ? gl[ p ] : null;
+
+	}
+
+	return { convert: convert };
+
+}
+
+class ArrayCamera extends PerspectiveCamera {
+
+	constructor( array = [] ) {
+
+		super();
+
+		this.isArrayCamera = true;
+
+		this.cameras = array;
+
+	}
+
+}
+
+class Group extends Object3D {
+
+	constructor() {
+
+		super();
+
+		this.isGroup = true;
+
+		this.type = 'Group';
+
+	}
+
+}
+
+const _moveEvent = { type: 'move' };
+
+class WebXRController {
+
+	constructor() {
+
+		this._targetRay = null;
+		this._grip = null;
+		this._hand = null;
+
+	}
+
+	getHandSpace() {
+
+		if ( this._hand === null ) {
+
+			this._hand = new Group();
+			this._hand.matrixAutoUpdate = false;
+			this._hand.visible = false;
+
+			this._hand.joints = {};
+			this._hand.inputState = { pinching: false };
+
+		}
+
+		return this._hand;
+
+	}
+
+	getTargetRaySpace() {
+
+		if ( this._targetRay === null ) {
+
+			this._targetRay = new Group();
+			this._targetRay.matrixAutoUpdate = false;
+			this._targetRay.visible = false;
+			this._targetRay.hasLinearVelocity = false;
+			this._targetRay.linearVelocity = new Vector3();
+			this._targetRay.hasAngularVelocity = false;
+			this._targetRay.angularVelocity = new Vector3();
+
+		}
+
+		return this._targetRay;
+
+	}
+
+	getGripSpace() {
+
+		if ( this._grip === null ) {
+
+			this._grip = new Group();
+			this._grip.matrixAutoUpdate = false;
+			this._grip.visible = false;
+			this._grip.hasLinearVelocity = false;
+			this._grip.linearVelocity = new Vector3();
+			this._grip.hasAngularVelocity = false;
+			this._grip.angularVelocity = new Vector3();
+
+		}
+
+		return this._grip;
+
+	}
+
+	dispatchEvent( event ) {
+
+		if ( this._targetRay !== null ) {
+
+			this._targetRay.dispatchEvent( event );
+
+		}
+
+		if ( this._grip !== null ) {
+
+			this._grip.dispatchEvent( event );
+
+		}
+
+		if ( this._hand !== null ) {
+
+			this._hand.dispatchEvent( event );
+
+		}
+
+		return this;
+
+	}
+
+	connect( inputSource ) {
+
+		if ( inputSource && inputSource.hand ) {
+
+			const hand = this._hand;
+
+			if ( hand ) {
+
+				for ( const inputjoint of inputSource.hand.values() ) {
+
+					// Initialize hand with joints when connected
+					this._getHandJoint( hand, inputjoint );
+
+				}
+
+			}
+
+		}
+
+		this.dispatchEvent( { type: 'connected', data: inputSource } );
+
+		return this;
+
+	}
+
+	disconnect( inputSource ) {
+
+		this.dispatchEvent( { type: 'disconnected', data: inputSource } );
+
+		if ( this._targetRay !== null ) {
+
+			this._targetRay.visible = false;
+
+		}
+
+		if ( this._grip !== null ) {
+
+			this._grip.visible = false;
+
+		}
+
+		if ( this._hand !== null ) {
+
+			this._hand.visible = false;
+
+		}
+
+		return this;
+
+	}
+
+	update( inputSource, frame, referenceSpace ) {
+
+		let inputPose = null;
+		let gripPose = null;
+		let handPose = null;
+
+		const targetRay = this._targetRay;
+		const grip = this._grip;
+		const hand = this._hand;
+
+		if ( inputSource && frame.session.visibilityState !== 'visible-blurred' ) {
+
+			if ( hand && inputSource.hand ) {
+
+				handPose = true;
+
+				for ( const inputjoint of inputSource.hand.values() ) {
+
+					// Update the joints groups with the XRJoint poses
+					const jointPose = frame.getJointPose( inputjoint, referenceSpace );
+
+					// The transform of this joint will be updated with the joint pose on each frame
+					const joint = this._getHandJoint( hand, inputjoint );
+
+					if ( jointPose !== null ) {
+
+						joint.matrix.fromArray( jointPose.transform.matrix );
+						joint.matrix.decompose( joint.position, joint.rotation, joint.scale );
+						joint.matrixWorldNeedsUpdate = true;
+						joint.jointRadius = jointPose.radius;
+
+					}
+
+					joint.visible = jointPose !== null;
+
+				}
+
+				// Custom events
+
+				// Check pinchz
+				const indexTip = hand.joints[ 'index-finger-tip' ];
+				const thumbTip = hand.joints[ 'thumb-tip' ];
+				const distance = indexTip.position.distanceTo( thumbTip.position );
+
+				const distanceToPinch = 0.02;
+				const threshold = 0.005;
+
+				if ( hand.inputState.pinching && distance > distanceToPinch + threshold ) {
+
+					hand.inputState.pinching = false;
+					this.dispatchEvent( {
+						type: 'pinchend',
+						handedness: inputSource.handedness,
+						target: this
+					} );
+
+				} else if ( ! hand.inputState.pinching && distance <= distanceToPinch - threshold ) {
+
+					hand.inputState.pinching = true;
+					this.dispatchEvent( {
+						type: 'pinchstart',
+						handedness: inputSource.handedness,
+						target: this
+					} );
+
+				}
+
+			} else {
+
+				if ( grip !== null && inputSource.gripSpace ) {
+
+					gripPose = frame.getPose( inputSource.gripSpace, referenceSpace );
+
+					if ( gripPose !== null ) {
+
+						grip.matrix.fromArray( gripPose.transform.matrix );
+						grip.matrix.decompose( grip.position, grip.rotation, grip.scale );
+						grip.matrixWorldNeedsUpdate = true;
+
+						if ( gripPose.linearVelocity ) {
+
+							grip.hasLinearVelocity = true;
+							grip.linearVelocity.copy( gripPose.linearVelocity );
+
+						} else {
+
+							grip.hasLinearVelocity = false;
+
+						}
+
+						if ( gripPose.angularVelocity ) {
+
+							grip.hasAngularVelocity = true;
+							grip.angularVelocity.copy( gripPose.angularVelocity );
+
+						} else {
+
+							grip.hasAngularVelocity = false;
+
+						}
+
+					}
+
+				}
+
+			}
+
+			if ( targetRay !== null ) {
+
+				inputPose = frame.getPose( inputSource.targetRaySpace, referenceSpace );
+
+				// Some runtimes (namely Vive Cosmos with Vive OpenXR Runtime) have only grip space and ray space is equal to it
+				if ( inputPose === null && gripPose !== null ) {
+
+					inputPose = gripPose;
+
+				}
+
+				if ( inputPose !== null ) {
+
+					targetRay.matrix.fromArray( inputPose.transform.matrix );
+					targetRay.matrix.decompose( targetRay.position, targetRay.rotation, targetRay.scale );
+					targetRay.matrixWorldNeedsUpdate = true;
+
+					if ( inputPose.linearVelocity ) {
+
+						targetRay.hasLinearVelocity = true;
+						targetRay.linearVelocity.copy( inputPose.linearVelocity );
+
+					} else {
+
+						targetRay.hasLinearVelocity = false;
+
+					}
+
+					if ( inputPose.angularVelocity ) {
+
+						targetRay.hasAngularVelocity = true;
+						targetRay.angularVelocity.copy( inputPose.angularVelocity );
+
+					} else {
+
+						targetRay.hasAngularVelocity = false;
+
+					}
+
+					this.dispatchEvent( _moveEvent );
+
+				}
+
+			}
+
+
+		}
+
+		if ( targetRay !== null ) {
+
+			targetRay.visible = ( inputPose !== null );
+
+		}
+
+		if ( grip !== null ) {
+
+			grip.visible = ( gripPose !== null );
+
+		}
+
+		if ( hand !== null ) {
+
+			hand.visible = ( handPose !== null );
+
+		}
+
+		return this;
+
+	}
+
+	// private method
+
+	_getHandJoint( hand, inputjoint ) {
+
+		if ( hand.joints[ inputjoint.jointName ] === undefined ) {
+
+			const joint = new Group();
+			joint.matrixAutoUpdate = false;
+			joint.visible = false;
+			hand.joints[ inputjoint.jointName ] = joint;
+
+			hand.add( joint );
+
+		}
+
+		return hand.joints[ inputjoint.jointName ];
+
+	}
+
+}
+
+const _occlusion_vertex = `
+void main() {
+
+	gl_Position = vec4( position, 1.0 );
+
+}`;
+
+const _occlusion_fragment = `
+uniform sampler2DArray depthColor;
+uniform float depthWidth;
+uniform float depthHeight;
+
+void main() {
+
+	vec2 coord = vec2( gl_FragCoord.x / depthWidth, gl_FragCoord.y / depthHeight );
+
+	if ( coord.x >= 1.0 ) {
+
+		gl_FragDepth = texture( depthColor, vec3( coord.x - 1.0, coord.y, 1 ) ).r;
+
+	} else {
+
+		gl_FragDepth = texture( depthColor, vec3( coord.x, coord.y, 0 ) ).r;
+
+	}
+
+}`;
+
+class WebXRDepthSensing {
+
+	constructor() {
+
+		this.texture = null;
+		this.mesh = null;
+
+		this.depthNear = 0;
+		this.depthFar = 0;
+
+	}
+
+	init( renderer, depthData, renderState ) {
+
+		if ( this.texture === null ) {
+
+			const texture = new Texture();
+
+			const texProps = renderer.properties.get( texture );
+			texProps.__webglTexture = depthData.texture;
+
+			if ( ( depthData.depthNear != renderState.depthNear ) || ( depthData.depthFar != renderState.depthFar ) ) {
+
+				this.depthNear = depthData.depthNear;
+				this.depthFar = depthData.depthFar;
+
+			}
+
+			this.texture = texture;
+
+		}
+
+	}
+
+	getMesh( cameraXR ) {
+
+		if ( this.texture !== null ) {
+
+			if ( this.mesh === null ) {
+
+				const viewport = cameraXR.cameras[ 0 ].viewport;
+				const material = new ShaderMaterial( {
+					vertexShader: _occlusion_vertex,
+					fragmentShader: _occlusion_fragment,
+					uniforms: {
+						depthColor: { value: this.texture },
+						depthWidth: { value: viewport.z },
+						depthHeight: { value: viewport.w }
+					}
+				} );
+
+				this.mesh = new Mesh( new PlaneGeometry( 20, 20 ), material );
+
+			}
+
+		}
+
+		return this.mesh;
+
+	}
+
+	reset() {
+
+		this.texture = null;
+		this.mesh = null;
+
+	}
+
+	getDepthTexture() {
+
+		return this.texture;
+
+	}
+
+}
+
+class WebXRManager extends EventDispatcher {
+
+	constructor( renderer, gl ) {
+
+		super();
+
+		const scope = this;
+
+		let session = null;
+
+		let framebufferScaleFactor = 1.0;
+
+		let referenceSpace = null;
+		let referenceSpaceType = 'local-floor';
+		// Set default foveation to maximum.
+		let foveation = 1.0;
+		let customReferenceSpace = null;
+
+		let pose = null;
+		let glBinding = null;
+		let glProjLayer = null;
+		let glBaseLayer = null;
+		let xrFrame = null;
+
+		const depthSensing = new WebXRDepthSensing();
+		const attributes = gl.getContextAttributes();
+
+		let initialRenderTarget = null;
+		let newRenderTarget = null;
+
+		const controllers = [];
+		const controllerInputSources = [];
+
+		const currentSize = new Vector2();
+		let currentPixelRatio = null;
+
+		//
+
+		const cameraL = new PerspectiveCamera();
+		cameraL.layers.enable( 1 );
+		cameraL.viewport = new Vector4();
+
+		const cameraR = new PerspectiveCamera();
+		cameraR.layers.enable( 2 );
+		cameraR.viewport = new Vector4();
+
+		const cameras = [ cameraL, cameraR ];
+
+		const cameraXR = new ArrayCamera();
+		cameraXR.layers.enable( 1 );
+		cameraXR.layers.enable( 2 );
+
+		let _currentDepthNear = null;
+		let _currentDepthFar = null;
+
+		//
+
+		this.cameraAutoUpdate = true;
+		this.enabled = false;
+
+		this.isPresenting = false;
+
+		this.getController = function ( index ) {
+
+			let controller = controllers[ index ];
+
+			if ( controller === undefined ) {
+
+				controller = new WebXRController();
+				controllers[ index ] = controller;
+
+			}
+
+			return controller.getTargetRaySpace();
+
+		};
+
+		this.getControllerGrip = function ( index ) {
+
+			let controller = controllers[ index ];
+
+			if ( controller === undefined ) {
+
+				controller = new WebXRController();
+				controllers[ index ] = controller;
+
+			}
+
+			return controller.getGripSpace();
+
+		};
+
+		this.getHand = function ( index ) {
+
+			let controller = controllers[ index ];
+
+			if ( controller === undefined ) {
+
+				controller = new WebXRController();
+				controllers[ index ] = controller;
+
+			}
+
+			return controller.getHandSpace();
+
+		};
+
+		//
+
+		function onSessionEvent( event ) {
+
+			const controllerIndex = controllerInputSources.indexOf( event.inputSource );
+
+			if ( controllerIndex === - 1 ) {
+
+				return;
+
+			}
+
+			const controller = controllers[ controllerIndex ];
+
+			if ( controller !== undefined ) {
+
+				controller.update( event.inputSource, event.frame, customReferenceSpace || referenceSpace );
+				controller.dispatchEvent( { type: event.type, data: event.inputSource } );
+
+			}
+
+		}
+
+		function onSessionEnd() {
+
+			session.removeEventListener( 'select', onSessionEvent );
+			session.removeEventListener( 'selectstart', onSessionEvent );
+			session.removeEventListener( 'selectend', onSessionEvent );
+			session.removeEventListener( 'squeeze', onSessionEvent );
+			session.removeEventListener( 'squeezestart', onSessionEvent );
+			session.removeEventListener( 'squeezeend', onSessionEvent );
+			session.removeEventListener( 'end', onSessionEnd );
+			session.removeEventListener( 'inputsourceschange', onInputSourcesChange );
+
+			for ( let i = 0; i < controllers.length; i ++ ) {
+
+				const inputSource = controllerInputSources[ i ];
+
+				if ( inputSource === null ) continue;
+
+				controllerInputSources[ i ] = null;
+
+				controllers[ i ].disconnect( inputSource );
+
+			}
+
+			_currentDepthNear = null;
+			_currentDepthFar = null;
+
+			depthSensing.reset();
+
+			// restore framebuffer/rendering state
+
+			renderer.setRenderTarget( initialRenderTarget );
+
+			glBaseLayer = null;
+			glProjLayer = null;
+			glBinding = null;
+			session = null;
+			newRenderTarget = null;
+
+			//
+
+			animation.stop();
+
+			scope.isPresenting = false;
+
+			renderer.setPixelRatio( currentPixelRatio );
+			renderer.setSize( currentSize.width, currentSize.height, false );
+
+			scope.dispatchEvent( { type: 'sessionend' } );
+
+		}
+
+		this.setFramebufferScaleFactor = function ( value ) {
+
+			framebufferScaleFactor = value;
+
+			if ( scope.isPresenting === true ) {
+
+				console.warn( 'THREE.WebXRManager: Cannot change framebuffer scale while presenting.' );
+
+			}
+
+		};
+
+		this.setReferenceSpaceType = function ( value ) {
+
+			referenceSpaceType = value;
+
+			if ( scope.isPresenting === true ) {
+
+				console.warn( 'THREE.WebXRManager: Cannot change reference space type while presenting.' );
+
+			}
+
+		};
+
+		this.getReferenceSpace = function () {
+
+			return customReferenceSpace || referenceSpace;
+
+		};
+
+		this.setReferenceSpace = function ( space ) {
+
+			customReferenceSpace = space;
+
+		};
+
+		this.getBaseLayer = function () {
+
+			return glProjLayer !== null ? glProjLayer : glBaseLayer;
+
+		};
+
+		this.getBinding = function () {
+
+			return glBinding;
+
+		};
+
+		this.getFrame = function () {
+
+			return xrFrame;
+
+		};
+
+		this.getSession = function () {
+
+			return session;
+
+		};
+
+		this.setSession = async function ( value ) {
+
+			session = value;
+
+			if ( session !== null ) {
+
+				initialRenderTarget = renderer.getRenderTarget();
+
+				session.addEventListener( 'select', onSessionEvent );
+				session.addEventListener( 'selectstart', onSessionEvent );
+				session.addEventListener( 'selectend', onSessionEvent );
+				session.addEventListener( 'squeeze', onSessionEvent );
+				session.addEventListener( 'squeezestart', onSessionEvent );
+				session.addEventListener( 'squeezeend', onSessionEvent );
+				session.addEventListener( 'end', onSessionEnd );
+				session.addEventListener( 'inputsourceschange', onInputSourcesChange );
+
+				if ( attributes.xrCompatible !== true ) {
+
+					await gl.makeXRCompatible();
+
+				}
+
+				currentPixelRatio = renderer.getPixelRatio();
+				renderer.getSize( currentSize );
+
+				if ( session.renderState.layers === undefined ) {
+
+					const layerInit = {
+						antialias: attributes.antialias,
+						alpha: true,
+						depth: attributes.depth,
+						stencil: attributes.stencil,
+						framebufferScaleFactor: framebufferScaleFactor
+					};
+
+					glBaseLayer = new XRWebGLLayer( session, gl, layerInit );
+
+					session.updateRenderState( { baseLayer: glBaseLayer } );
+
+					renderer.setPixelRatio( 1 );
+					renderer.setSize( glBaseLayer.framebufferWidth, glBaseLayer.framebufferHeight, false );
+
+					newRenderTarget = new WebGLRenderTarget(
+						glBaseLayer.framebufferWidth,
+						glBaseLayer.framebufferHeight,
+						{
+							format: RGBAFormat,
+							type: UnsignedByteType,
+							colorSpace: renderer.outputColorSpace,
+							stencilBuffer: attributes.stencil
+						}
+					);
+
+				} else {
+
+					let depthFormat = null;
+					let depthType = null;
+					let glDepthFormat = null;
+
+					if ( attributes.depth ) {
+
+						glDepthFormat = attributes.stencil ? gl.DEPTH24_STENCIL8 : gl.DEPTH_COMPONENT24;
+						depthFormat = attributes.stencil ? DepthStencilFormat : DepthFormat;
+						depthType = attributes.stencil ? UnsignedInt248Type : UnsignedIntType;
+
+					}
+
+					const projectionlayerInit = {
+						colorFormat: gl.RGBA8,
+						depthFormat: glDepthFormat,
+						scaleFactor: framebufferScaleFactor
+					};
+
+					glBinding = new XRWebGLBinding( session, gl );
+
+					glProjLayer = glBinding.createProjectionLayer( projectionlayerInit );
+
+					session.updateRenderState( { layers: [ glProjLayer ] } );
+
+					renderer.setPixelRatio( 1 );
+					renderer.setSize( glProjLayer.textureWidth, glProjLayer.textureHeight, false );
+
+					newRenderTarget = new WebGLRenderTarget(
+						glProjLayer.textureWidth,
+						glProjLayer.textureHeight,
+						{
+							format: RGBAFormat,
+							type: UnsignedByteType,
+							depthTexture: new DepthTexture( glProjLayer.textureWidth, glProjLayer.textureHeight, depthType, undefined, undefined, undefined, undefined, undefined, undefined, depthFormat ),
+							stencilBuffer: attributes.stencil,
+							colorSpace: renderer.outputColorSpace,
+							samples: attributes.antialias ? 4 : 0,
+							resolveDepthBuffer: ( glProjLayer.ignoreDepthValues === false )
+						} );
+
+				}
+
+				newRenderTarget.isXRRenderTarget = true; // TODO Remove this when possible, see #23278
+
+				this.setFoveation( foveation );
+
+				customReferenceSpace = null;
+				referenceSpace = await session.requestReferenceSpace( referenceSpaceType );
+
+				animation.setContext( session );
+				animation.start();
+
+				scope.isPresenting = true;
+
+				scope.dispatchEvent( { type: 'sessionstart' } );
+
+			}
+
+		};
+
+		this.getEnvironmentBlendMode = function () {
+
+			if ( session !== null ) {
+
+				return session.environmentBlendMode;
+
+			}
+
+		};
+
+		this.getDepthTexture = function () {
+
+			return depthSensing.getDepthTexture();
+
+		};
+
+		function onInputSourcesChange( event ) {
+
+			// Notify disconnected
+
+			for ( let i = 0; i < event.removed.length; i ++ ) {
+
+				const inputSource = event.removed[ i ];
+				const index = controllerInputSources.indexOf( inputSource );
+
+				if ( index >= 0 ) {
+
+					controllerInputSources[ index ] = null;
+					controllers[ index ].disconnect( inputSource );
+
+				}
+
+			}
+
+			// Notify connected
+
+			for ( let i = 0; i < event.added.length; i ++ ) {
+
+				const inputSource = event.added[ i ];
+
+				let controllerIndex = controllerInputSources.indexOf( inputSource );
+
+				if ( controllerIndex === - 1 ) {
+
+					// Assign input source a controller that currently has no input source
+
+					for ( let i = 0; i < controllers.length; i ++ ) {
+
+						if ( i >= controllerInputSources.length ) {
+
+							controllerInputSources.push( inputSource );
+							controllerIndex = i;
+							break;
+
+						} else if ( controllerInputSources[ i ] === null ) {
+
+							controllerInputSources[ i ] = inputSource;
+							controllerIndex = i;
+							break;
+
+						}
+
+					}
+
+					// If all controllers do currently receive input we ignore new ones
+
+					if ( controllerIndex === - 1 ) break;
+
+				}
+
+				const controller = controllers[ controllerIndex ];
+
+				if ( controller ) {
+
+					controller.connect( inputSource );
+
+				}
+
+			}
+
+		}
+
+		//
+
+		const cameraLPos = new Vector3();
+		const cameraRPos = new Vector3();
+
+		/**
+		 * Assumes 2 cameras that are parallel and share an X-axis, and that
+		 * the cameras' projection and world matrices have already been set.
+		 * And that near and far planes are identical for both cameras.
+		 * Visualization of this technique: https://computergraphics.stackexchange.com/a/4765
+		 */
+		function setProjectionFromUnion( camera, cameraL, cameraR ) {
+
+			cameraLPos.setFromMatrixPosition( cameraL.matrixWorld );
+			cameraRPos.setFromMatrixPosition( cameraR.matrixWorld );
+
+			const ipd = cameraLPos.distanceTo( cameraRPos );
+
+			const projL = cameraL.projectionMatrix.elements;
+			const projR = cameraR.projectionMatrix.elements;
+
+			// VR systems will have identical far and near planes, and
+			// most likely identical top and bottom frustum extents.
+			// Use the left camera for these values.
+			const near = projL[ 14 ] / ( projL[ 10 ] - 1 );
+			const far = projL[ 14 ] / ( projL[ 10 ] + 1 );
+			const topFov = ( projL[ 9 ] + 1 ) / projL[ 5 ];
+			const bottomFov = ( projL[ 9 ] - 1 ) / projL[ 5 ];
+
+			const leftFov = ( projL[ 8 ] - 1 ) / projL[ 0 ];
+			const rightFov = ( projR[ 8 ] + 1 ) / projR[ 0 ];
+			const left = near * leftFov;
+			const right = near * rightFov;
+
+			// Calculate the new camera's position offset from the
+			// left camera. xOffset should be roughly half `ipd`.
+			const zOffset = ipd / ( - leftFov + rightFov );
+			const xOffset = zOffset * - leftFov;
+
+			// TODO: Better way to apply this offset?
+			cameraL.matrixWorld.decompose( camera.position, camera.quaternion, camera.scale );
+			camera.translateX( xOffset );
+			camera.translateZ( zOffset );
+			camera.matrixWorld.compose( camera.position, camera.quaternion, camera.scale );
+			camera.matrixWorldInverse.copy( camera.matrixWorld ).invert();
+
+			// Check if the projection uses an infinite far plane.
+			if ( projL[ 10 ] === - 1.0 ) {
+
+				// Use the projection matrix from the left eye.
+				// The camera offset is sufficient to include the view volumes
+				// of both eyes (assuming symmetric projections).
+				camera.projectionMatrix.copy( cameraL.projectionMatrix );
+				camera.projectionMatrixInverse.copy( cameraL.projectionMatrixInverse );
+
+			} else {
+
+				// Find the union of the frustum values of the cameras and scale
+				// the values so that the near plane's position does not change in world space,
+				// although must now be relative to the new union camera.
+				const near2 = near + zOffset;
+				const far2 = far + zOffset;
+				const left2 = left - xOffset;
+				const right2 = right + ( ipd - xOffset );
+				const top2 = topFov * far / far2 * near2;
+				const bottom2 = bottomFov * far / far2 * near2;
+
+				camera.projectionMatrix.makePerspective( left2, right2, top2, bottom2, near2, far2 );
+				camera.projectionMatrixInverse.copy( camera.projectionMatrix ).invert();
+
+			}
+
+		}
+
+		function updateCamera( camera, parent ) {
+
+			if ( parent === null ) {
+
+				camera.matrixWorld.copy( camera.matrix );
+
+			} else {
+
+				camera.matrixWorld.multiplyMatrices( parent.matrixWorld, camera.matrix );
+
+			}
+
+			camera.matrixWorldInverse.copy( camera.matrixWorld ).invert();
+
+		}
+
+		this.updateCamera = function ( camera ) {
+
+			if ( session === null ) return;
+
+			let depthNear = camera.near;
+			let depthFar = camera.far;
+
+			if ( depthSensing.texture !== null ) {
+
+				if ( depthSensing.depthNear > 0 ) depthNear = depthSensing.depthNear;
+				if ( depthSensing.depthFar > 0 ) depthFar = depthSensing.depthFar;
+
+			}
+
+			cameraXR.near = cameraR.near = cameraL.near = depthNear;
+			cameraXR.far = cameraR.far = cameraL.far = depthFar;
+
+			if ( _currentDepthNear !== cameraXR.near || _currentDepthFar !== cameraXR.far ) {
+
+				// Note that the new renderState won't apply until the next frame. See #18320
+
+				session.updateRenderState( {
+					depthNear: cameraXR.near,
+					depthFar: cameraXR.far
+				} );
+
+				_currentDepthNear = cameraXR.near;
+				_currentDepthFar = cameraXR.far;
+
+			}
+
+			const parent = camera.parent;
+			const cameras = cameraXR.cameras;
+
+			updateCamera( cameraXR, parent );
+
+			for ( let i = 0; i < cameras.length; i ++ ) {
+
+				updateCamera( cameras[ i ], parent );
+
+			}
+
+			// update projection matrix for proper view frustum culling
+
+			if ( cameras.length === 2 ) {
+
+				setProjectionFromUnion( cameraXR, cameraL, cameraR );
+
+			} else {
+
+				// assume single camera setup (AR)
+
+				cameraXR.projectionMatrix.copy( cameraL.projectionMatrix );
+
+			}
+
+			// update user camera and its children
+
+			updateUserCamera( camera, cameraXR, parent );
+
+		};
+
+		function updateUserCamera( camera, cameraXR, parent ) {
+
+			if ( parent === null ) {
+
+				camera.matrix.copy( cameraXR.matrixWorld );
+
+			} else {
+
+				camera.matrix.copy( parent.matrixWorld );
+				camera.matrix.invert();
+				camera.matrix.multiply( cameraXR.matrixWorld );
+
+			}
+
+			camera.matrix.decompose( camera.position, camera.quaternion, camera.scale );
+			camera.updateMatrixWorld( true );
+
+			camera.projectionMatrix.copy( cameraXR.projectionMatrix );
+			camera.projectionMatrixInverse.copy( cameraXR.projectionMatrixInverse );
+
+			if ( camera.isPerspectiveCamera ) {
+
+				camera.fov = RAD2DEG * 2 * Math.atan( 1 / camera.projectionMatrix.elements[ 5 ] );
+				camera.zoom = 1;
+
+			}
+
+		}
+
+		this.getCamera = function () {
+
+			return cameraXR;
+
+		};
+
+		this.getFoveation = function () {
+
+			if ( glProjLayer === null && glBaseLayer === null ) {
+
+				return undefined;
+
+			}
+
+			return foveation;
+
+		};
+
+		this.setFoveation = function ( value ) {
+
+			// 0 = no foveation = full resolution
+			// 1 = maximum foveation = the edges render at lower resolution
+
+			foveation = value;
+
+			if ( glProjLayer !== null ) {
+
+				glProjLayer.fixedFoveation = value;
+
+			}
+
+			if ( glBaseLayer !== null && glBaseLayer.fixedFoveation !== undefined ) {
+
+				glBaseLayer.fixedFoveation = value;
+
+			}
+
+		};
+
+		this.hasDepthSensing = function () {
+
+			return depthSensing.texture !== null;
+
+		};
+
+		this.getDepthSensingMesh = function () {
+
+			return depthSensing.getMesh( cameraXR );
+
+		};
+
+		// Animation Loop
+
+		let onAnimationFrameCallback = null;
+
+		function onAnimationFrame( time, frame ) {
+
+			pose = frame.getViewerPose( customReferenceSpace || referenceSpace );
+			xrFrame = frame;
+
+			if ( pose !== null ) {
+
+				const views = pose.views;
+
+				if ( glBaseLayer !== null ) {
+
+					renderer.setRenderTargetFramebuffer( newRenderTarget, glBaseLayer.framebuffer );
+					renderer.setRenderTarget( newRenderTarget );
+
+				}
+
+				let cameraXRNeedsUpdate = false;
+
+				// check if it's necessary to rebuild cameraXR's camera list
+
+				if ( views.length !== cameraXR.cameras.length ) {
+
+					cameraXR.cameras.length = 0;
+					cameraXRNeedsUpdate = true;
+
+				}
+
+				for ( let i = 0; i < views.length; i ++ ) {
+
+					const view = views[ i ];
+
+					let viewport = null;
+
+					if ( glBaseLayer !== null ) {
+
+						viewport = glBaseLayer.getViewport( view );
+
+					} else {
+
+						const glSubImage = glBinding.getViewSubImage( glProjLayer, view );
+						viewport = glSubImage.viewport;
+
+						// For side-by-side projection, we only produce a single texture for both eyes.
+						if ( i === 0 ) {
+
+							renderer.setRenderTargetTextures(
+								newRenderTarget,
+								glSubImage.colorTexture,
+								glProjLayer.ignoreDepthValues ? undefined : glSubImage.depthStencilTexture );
+
+							renderer.setRenderTarget( newRenderTarget );
+
+						}
+
+					}
+
+					let camera = cameras[ i ];
+
+					if ( camera === undefined ) {
+
+						camera = new PerspectiveCamera();
+						camera.layers.enable( i );
+						camera.viewport = new Vector4();
+						cameras[ i ] = camera;
+
+					}
+
+					camera.matrix.fromArray( view.transform.matrix );
+					camera.matrix.decompose( camera.position, camera.quaternion, camera.scale );
+					camera.projectionMatrix.fromArray( view.projectionMatrix );
+					camera.projectionMatrixInverse.copy( camera.projectionMatrix ).invert();
+					camera.viewport.set( viewport.x, viewport.y, viewport.width, viewport.height );
+
+					if ( i === 0 ) {
+
+						cameraXR.matrix.copy( camera.matrix );
+						cameraXR.matrix.decompose( cameraXR.position, cameraXR.quaternion, cameraXR.scale );
+
+					}
+
+					if ( cameraXRNeedsUpdate === true ) {
+
+						cameraXR.cameras.push( camera );
+
+					}
+
+				}
+
+				//
+
+				const enabledFeatures = session.enabledFeatures;
+
+				if ( enabledFeatures && enabledFeatures.includes( 'depth-sensing' ) ) {
+
+					const depthData = glBinding.getDepthInformation( views[ 0 ] );
+
+					if ( depthData && depthData.isValid && depthData.texture ) {
+
+						depthSensing.init( renderer, depthData, session.renderState );
+
+					}
+
+				}
+
+			}
+
+			//
+
+			for ( let i = 0; i < controllers.length; i ++ ) {
+
+				const inputSource = controllerInputSources[ i ];
+				const controller = controllers[ i ];
+
+				if ( inputSource !== null && controller !== undefined ) {
+
+					controller.update( inputSource, frame, customReferenceSpace || referenceSpace );
+
+				}
+
+			}
+
+			if ( onAnimationFrameCallback ) onAnimationFrameCallback( time, frame );
+
+			if ( frame.detectedPlanes ) {
+
+				scope.dispatchEvent( { type: 'planesdetected', data: frame } );
+
+			}
+
+			xrFrame = null;
+
+		}
+
+		const animation = new WebGLAnimation();
+
+		animation.setAnimationLoop( onAnimationFrame );
+
+		this.setAnimationLoop = function ( callback ) {
+
+			onAnimationFrameCallback = callback;
+
+		};
+
+		this.dispose = function () {};
+
+	}
+
+}
+
+const _e1 = /*@__PURE__*/ new Euler();
+const _m1 = /*@__PURE__*/ new Matrix4();
+
+function WebGLMaterials( renderer, properties ) {
+
+	function refreshTransformUniform( map, uniform ) {
+
+		if ( map.matrixAutoUpdate === true ) {
+
+			map.updateMatrix();
+
+		}
+
+		uniform.value.copy( map.matrix );
+
+	}
+
+	function refreshFogUniforms( uniforms, fog ) {
+
+		fog.color.getRGB( uniforms.fogColor.value, getUnlitUniformColorSpace( renderer ) );
+
+		if ( fog.isFog ) {
+
+			uniforms.fogNear.value = fog.near;
+			uniforms.fogFar.value = fog.far;
+
+		} else if ( fog.isFogExp2 ) {
+
+			uniforms.fogDensity.value = fog.density;
+
+		}
+
+	}
+
+	function refreshMaterialUniforms( uniforms, material, pixelRatio, height, transmissionRenderTarget ) {
+
+		if ( material.isMeshBasicMaterial ) {
+
+			refreshUniformsCommon( uniforms, material );
+
+		} else if ( material.isMeshLambertMaterial ) {
+
+			refreshUniformsCommon( uniforms, material );
+
+		} else if ( material.isMeshToonMaterial ) {
+
+			refreshUniformsCommon( uniforms, material );
+			refreshUniformsToon( uniforms, material );
+
+		} else if ( material.isMeshPhongMaterial ) {
+
+			refreshUniformsCommon( uniforms, material );
+			refreshUniformsPhong( uniforms, material );
+
+		} else if ( material.isMeshStandardMaterial ) {
+
+			refreshUniformsCommon( uniforms, material );
+			refreshUniformsStandard( uniforms, material );
+
+			if ( material.isMeshPhysicalMaterial ) {
+
+				refreshUniformsPhysical( uniforms, material, transmissionRenderTarget );
+
+			}
+
+		} else if ( material.isMeshMatcapMaterial ) {
+
+			refreshUniformsCommon( uniforms, material );
+			refreshUniformsMatcap( uniforms, material );
+
+		} else if ( material.isMeshDepthMaterial ) {
+
+			refreshUniformsCommon( uniforms, material );
+
+		} else if ( material.isMeshDistanceMaterial ) {
+
+			refreshUniformsCommon( uniforms, material );
+			refreshUniformsDistance( uniforms, material );
+
+		} else if ( material.isMeshNormalMaterial ) {
+
+			refreshUniformsCommon( uniforms, material );
+
+		} else if ( material.isLineBasicMaterial ) {
+
+			refreshUniformsLine( uniforms, material );
+
+			if ( material.isLineDashedMaterial ) {
+
+				refreshUniformsDash( uniforms, material );
+
+			}
+
+		} else if ( material.isPointsMaterial ) {
+
+			refreshUniformsPoints( uniforms, material, pixelRatio, height );
+
+		} else if ( material.isSpriteMaterial ) {
+
+			refreshUniformsSprites( uniforms, material );
+
+		} else if ( material.isShadowMaterial ) {
+
+			uniforms.color.value.copy( material.color );
+			uniforms.opacity.value = material.opacity;
+
+		} else if ( material.isShaderMaterial ) {
+
+			material.uniformsNeedUpdate = false; // #15581
+
+		}
+
+	}
+
+	function refreshUniformsCommon( uniforms, material ) {
+
+		uniforms.opacity.value = material.opacity;
+
+		if ( material.color ) {
+
+			uniforms.diffuse.value.copy( material.color );
+
+		}
+
+		if ( material.emissive ) {
+
+			uniforms.emissive.value.copy( material.emissive ).multiplyScalar( material.emissiveIntensity );
+
+		}
+
+		if ( material.map ) {
+
+			uniforms.map.value = material.map;
+
+			refreshTransformUniform( material.map, uniforms.mapTransform );
+
+		}
+
+		if ( material.alphaMap ) {
+
+			uniforms.alphaMap.value = material.alphaMap;
+
+			refreshTransformUniform( material.alphaMap, uniforms.alphaMapTransform );
+
+		}
+
+		if ( material.bumpMap ) {
+
+			uniforms.bumpMap.value = material.bumpMap;
+
+			refreshTransformUniform( material.bumpMap, uniforms.bumpMapTransform );
+
+			uniforms.bumpScale.value = material.bumpScale;
+
+			if ( material.side === BackSide ) {
+
+				uniforms.bumpScale.value *= - 1;
+
+			}
+
+		}
+
+		if ( material.normalMap ) {
+
+			uniforms.normalMap.value = material.normalMap;
+
+			refreshTransformUniform( material.normalMap, uniforms.normalMapTransform );
+
+			uniforms.normalScale.value.copy( material.normalScale );
+
+			if ( material.side === BackSide ) {
+
+				uniforms.normalScale.value.negate();
+
+			}
+
+		}
+
+		if ( material.displacementMap ) {
+
+			uniforms.displacementMap.value = material.displacementMap;
+
+			refreshTransformUniform( material.displacementMap, uniforms.displacementMapTransform );
+
+			uniforms.displacementScale.value = material.displacementScale;
+			uniforms.displacementBias.value = material.displacementBias;
+
+		}
+
+		if ( material.emissiveMap ) {
+
+			uniforms.emissiveMap.value = material.emissiveMap;
+
+			refreshTransformUniform( material.emissiveMap, uniforms.emissiveMapTransform );
+
+		}
+
+		if ( material.specularMap ) {
+
+			uniforms.specularMap.value = material.specularMap;
+
+			refreshTransformUniform( material.specularMap, uniforms.specularMapTransform );
+
+		}
+
+		if ( material.alphaTest > 0 ) {
+
+			uniforms.alphaTest.value = material.alphaTest;
+
+		}
+
+		const materialProperties = properties.get( material );
+
+		const envMap = materialProperties.envMap;
+		const envMapRotation = materialProperties.envMapRotation;
+
+		if ( envMap ) {
+
+			uniforms.envMap.value = envMap;
+
+			_e1.copy( envMapRotation );
+
+			// accommodate left-handed frame
+			_e1.x *= - 1; _e1.y *= - 1; _e1.z *= - 1;
+
+			if ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) {
+
+				// environment maps which are not cube render targets or PMREMs follow a different convention
+				_e1.y *= - 1;
+				_e1.z *= - 1;
+
+			}
+
+			uniforms.envMapRotation.value.setFromMatrix4( _m1.makeRotationFromEuler( _e1 ) );
+
+			uniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) ? - 1 : 1;
+
+			uniforms.reflectivity.value = material.reflectivity;
+			uniforms.ior.value = material.ior;
+			uniforms.refractionRatio.value = material.refractionRatio;
+
+		}
+
+		if ( material.lightMap ) {
+
+			uniforms.lightMap.value = material.lightMap;
+			uniforms.lightMapIntensity.value = material.lightMapIntensity;
+
+			refreshTransformUniform( material.lightMap, uniforms.lightMapTransform );
+
+		}
+
+		if ( material.aoMap ) {
+
+			uniforms.aoMap.value = material.aoMap;
+			uniforms.aoMapIntensity.value = material.aoMapIntensity;
+
+			refreshTransformUniform( material.aoMap, uniforms.aoMapTransform );
+
+		}
+
+	}
+
+	function refreshUniformsLine( uniforms, material ) {
+
+		uniforms.diffuse.value.copy( material.color );
+		uniforms.opacity.value = material.opacity;
+
+		if ( material.map ) {
+
+			uniforms.map.value = material.map;
+
+			refreshTransformUniform( material.map, uniforms.mapTransform );
+
+		}
+
+	}
+
+	function refreshUniformsDash( uniforms, material ) {
+
+		uniforms.dashSize.value = material.dashSize;
+		uniforms.totalSize.value = material.dashSize + material.gapSize;
+		uniforms.scale.value = material.scale;
+
+	}
+
+	function refreshUniformsPoints( uniforms, material, pixelRatio, height ) {
+
+		uniforms.diffuse.value.copy( material.color );
+		uniforms.opacity.value = material.opacity;
+		uniforms.size.value = material.size * pixelRatio;
+		uniforms.scale.value = height * 0.5;
+
+		if ( material.map ) {
+
+			uniforms.map.value = material.map;
+
+			refreshTransformUniform( material.map, uniforms.uvTransform );
+
+		}
+
+		if ( material.alphaMap ) {
+
+			uniforms.alphaMap.value = material.alphaMap;
+
+			refreshTransformUniform( material.alphaMap, uniforms.alphaMapTransform );
+
+		}
+
+		if ( material.alphaTest > 0 ) {
+
+			uniforms.alphaTest.value = material.alphaTest;
+
+		}
+
+	}
+
+	function refreshUniformsSprites( uniforms, material ) {
+
+		uniforms.diffuse.value.copy( material.color );
+		uniforms.opacity.value = material.opacity;
+		uniforms.rotation.value = material.rotation;
+
+		if ( material.map ) {
+
+			uniforms.map.value = material.map;
+
+			refreshTransformUniform( material.map, uniforms.mapTransform );
+
+		}
+
+		if ( material.alphaMap ) {
+
+			uniforms.alphaMap.value = material.alphaMap;
+
+			refreshTransformUniform( material.alphaMap, uniforms.alphaMapTransform );
+
+		}
+
+		if ( material.alphaTest > 0 ) {
+
+			uniforms.alphaTest.value = material.alphaTest;
+
+		}
+
+	}
+
+	function refreshUniformsPhong( uniforms, material ) {
+
+		uniforms.specular.value.copy( material.specular );
+		uniforms.shininess.value = Math.max( material.shininess, 1e-4 ); // to prevent pow( 0.0, 0.0 )
+
+	}
+
+	function refreshUniformsToon( uniforms, material ) {
+
+		if ( material.gradientMap ) {
+
+			uniforms.gradientMap.value = material.gradientMap;
+
+		}
+
+	}
+
+	function refreshUniformsStandard( uniforms, material ) {
+
+		uniforms.metalness.value = material.metalness;
+
+		if ( material.metalnessMap ) {
+
+			uniforms.metalnessMap.value = material.metalnessMap;
+
+			refreshTransformUniform( material.metalnessMap, uniforms.metalnessMapTransform );
+
+		}
+
+		uniforms.roughness.value = material.roughness;
+
+		if ( material.roughnessMap ) {
+
+			uniforms.roughnessMap.value = material.roughnessMap;
+
+			refreshTransformUniform( material.roughnessMap, uniforms.roughnessMapTransform );
+
+		}
+
+		if ( material.envMap ) {
+
+			//uniforms.envMap.value = material.envMap; // part of uniforms common
+
+			uniforms.envMapIntensity.value = material.envMapIntensity;
+
+		}
+
+	}
+
+	function refreshUniformsPhysical( uniforms, material, transmissionRenderTarget ) {
+
+		uniforms.ior.value = material.ior; // also part of uniforms common
+
+		if ( material.sheen > 0 ) {
+
+			uniforms.sheenColor.value.copy( material.sheenColor ).multiplyScalar( material.sheen );
+
+			uniforms.sheenRoughness.value = material.sheenRoughness;
+
+			if ( material.sheenColorMap ) {
+
+				uniforms.sheenColorMap.value = material.sheenColorMap;
+
+				refreshTransformUniform( material.sheenColorMap, uniforms.sheenColorMapTransform );
+
+			}
+
+			if ( material.sheenRoughnessMap ) {
+
+				uniforms.sheenRoughnessMap.value = material.sheenRoughnessMap;
+
+				refreshTransformUniform( material.sheenRoughnessMap, uniforms.sheenRoughnessMapTransform );
+
+			}
+
+		}
+
+		if ( material.clearcoat > 0 ) {
+
+			uniforms.clearcoat.value = material.clearcoat;
+			uniforms.clearcoatRoughness.value = material.clearcoatRoughness;
+
+			if ( material.clearcoatMap ) {
+
+				uniforms.clearcoatMap.value = material.clearcoatMap;
+
+				refreshTransformUniform( material.clearcoatMap, uniforms.clearcoatMapTransform );
+
+			}
+
+			if ( material.clearcoatRoughnessMap ) {
+
+				uniforms.clearcoatRoughnessMap.value = material.clearcoatRoughnessMap;
+
+				refreshTransformUniform( material.clearcoatRoughnessMap, uniforms.clearcoatRoughnessMapTransform );
+
+			}
+
+			if ( material.clearcoatNormalMap ) {
+
+				uniforms.clearcoatNormalMap.value = material.clearcoatNormalMap;
+
+				refreshTransformUniform( material.clearcoatNormalMap, uniforms.clearcoatNormalMapTransform );
+
+				uniforms.clearcoatNormalScale.value.copy( material.clearcoatNormalScale );
+
+				if ( material.side === BackSide ) {
+
+					uniforms.clearcoatNormalScale.value.negate();
+
+				}
+
+			}
+
+		}
+
+		if ( material.dispersion > 0 ) {
+
+			uniforms.dispersion.value = material.dispersion;
+
+		}
+
+		if ( material.iridescence > 0 ) {
+
+			uniforms.iridescence.value = material.iridescence;
+			uniforms.iridescenceIOR.value = material.iridescenceIOR;
+			uniforms.iridescenceThicknessMinimum.value = material.iridescenceThicknessRange[ 0 ];
+			uniforms.iridescenceThicknessMaximum.value = material.iridescenceThicknessRange[ 1 ];
+
+			if ( material.iridescenceMap ) {
+
+				uniforms.iridescenceMap.value = material.iridescenceMap;
+
+				refreshTransformUniform( material.iridescenceMap, uniforms.iridescenceMapTransform );
+
+			}
+
+			if ( material.iridescenceThicknessMap ) {
+
+				uniforms.iridescenceThicknessMap.value = material.iridescenceThicknessMap;
+
+				refreshTransformUniform( material.iridescenceThicknessMap, uniforms.iridescenceThicknessMapTransform );
+
+			}
+
+		}
+
+		if ( material.transmission > 0 ) {
+
+			uniforms.transmission.value = material.transmission;
+			uniforms.transmissionSamplerMap.value = transmissionRenderTarget.texture;
+			uniforms.transmissionSamplerSize.value.set( transmissionRenderTarget.width, transmissionRenderTarget.height );
+
+			if ( material.transmissionMap ) {
+
+				uniforms.transmissionMap.value = material.transmissionMap;
+
+				refreshTransformUniform( material.transmissionMap, uniforms.transmissionMapTransform );
+
+			}
+
+			uniforms.thickness.value = material.thickness;
+
+			if ( material.thicknessMap ) {
+
+				uniforms.thicknessMap.value = material.thicknessMap;
+
+				refreshTransformUniform( material.thicknessMap, uniforms.thicknessMapTransform );
+
+			}
+
+			uniforms.attenuationDistance.value = material.attenuationDistance;
+			uniforms.attenuationColor.value.copy( material.attenuationColor );
+
+		}
+
+		if ( material.anisotropy > 0 ) {
+
+			uniforms.anisotropyVector.value.set( material.anisotropy * Math.cos( material.anisotropyRotation ), material.anisotropy * Math.sin( material.anisotropyRotation ) );
+
+			if ( material.anisotropyMap ) {
+
+				uniforms.anisotropyMap.value = material.anisotropyMap;
+
+				refreshTransformUniform( material.anisotropyMap, uniforms.anisotropyMapTransform );
+
+			}
+
+		}
+
+		uniforms.specularIntensity.value = material.specularIntensity;
+		uniforms.specularColor.value.copy( material.specularColor );
+
+		if ( material.specularColorMap ) {
+
+			uniforms.specularColorMap.value = material.specularColorMap;
+
+			refreshTransformUniform( material.specularColorMap, uniforms.specularColorMapTransform );
+
+		}
+
+		if ( material.specularIntensityMap ) {
+
+			uniforms.specularIntensityMap.value = material.specularIntensityMap;
+
+			refreshTransformUniform( material.specularIntensityMap, uniforms.specularIntensityMapTransform );
+
+		}
+
+	}
+
+	function refreshUniformsMatcap( uniforms, material ) {
+
+		if ( material.matcap ) {
+
+			uniforms.matcap.value = material.matcap;
+
+		}
+
+	}
+
+	function refreshUniformsDistance( uniforms, material ) {
+
+		const light = properties.get( material ).light;
+
+		uniforms.referencePosition.value.setFromMatrixPosition( light.matrixWorld );
+		uniforms.nearDistance.value = light.shadow.camera.near;
+		uniforms.farDistance.value = light.shadow.camera.far;
+
+	}
+
+	return {
+		refreshFogUniforms: refreshFogUniforms,
+		refreshMaterialUniforms: refreshMaterialUniforms
+	};
+
+}
+
+function WebGLUniformsGroups( gl, info, capabilities, state ) {
+
+	let buffers = {};
+	let updateList = {};
+	let allocatedBindingPoints = [];
+
+	const maxBindingPoints = gl.getParameter( gl.MAX_UNIFORM_BUFFER_BINDINGS ); // binding points are global whereas block indices are per shader program
+
+	function bind( uniformsGroup, program ) {
+
+		const webglProgram = program.program;
+		state.uniformBlockBinding( uniformsGroup, webglProgram );
+
+	}
+
+	function update( uniformsGroup, program ) {
+
+		let buffer = buffers[ uniformsGroup.id ];
+
+		if ( buffer === undefined ) {
+
+			prepareUniformsGroup( uniformsGroup );
+
+			buffer = createBuffer( uniformsGroup );
+			buffers[ uniformsGroup.id ] = buffer;
+
+			uniformsGroup.addEventListener( 'dispose', onUniformsGroupsDispose );
+
+		}
+
+		// ensure to update the binding points/block indices mapping for this program
+
+		const webglProgram = program.program;
+		state.updateUBOMapping( uniformsGroup, webglProgram );
+
+		// update UBO once per frame
+
+		const frame = info.render.frame;
+
+		if ( updateList[ uniformsGroup.id ] !== frame ) {
+
+			updateBufferData( uniformsGroup );
+
+			updateList[ uniformsGroup.id ] = frame;
+
+		}
+
+	}
+
+	function createBuffer( uniformsGroup ) {
+
+		// the setup of an UBO is independent of a particular shader program but global
+
+		const bindingPointIndex = allocateBindingPointIndex();
+		uniformsGroup.__bindingPointIndex = bindingPointIndex;
+
+		const buffer = gl.createBuffer();
+		const size = uniformsGroup.__size;
+		const usage = uniformsGroup.usage;
+
+		gl.bindBuffer( gl.UNIFORM_BUFFER, buffer );
+		gl.bufferData( gl.UNIFORM_BUFFER, size, usage );
+		gl.bindBuffer( gl.UNIFORM_BUFFER, null );
+		gl.bindBufferBase( gl.UNIFORM_BUFFER, bindingPointIndex, buffer );
+
+		return buffer;
+
+	}
+
+	function allocateBindingPointIndex() {
+
+		for ( let i = 0; i < maxBindingPoints; i ++ ) {
+
+			if ( allocatedBindingPoints.indexOf( i ) === - 1 ) {
+
+				allocatedBindingPoints.push( i );
+				return i;
+
+			}
+
+		}
+
+		console.error( 'THREE.WebGLRenderer: Maximum number of simultaneously usable uniforms groups reached.' );
+
+		return 0;
+
+	}
+
+	function updateBufferData( uniformsGroup ) {
+
+		const buffer = buffers[ uniformsGroup.id ];
+		const uniforms = uniformsGroup.uniforms;
+		const cache = uniformsGroup.__cache;
+
+		gl.bindBuffer( gl.UNIFORM_BUFFER, buffer );
+
+		for ( let i = 0, il = uniforms.length; i < il; i ++ ) {
+
+			const uniformArray = Array.isArray( uniforms[ i ] ) ? uniforms[ i ] : [ uniforms[ i ] ];
+
+			for ( let j = 0, jl = uniformArray.length; j < jl; j ++ ) {
+
+				const uniform = uniformArray[ j ];
+
+				if ( hasUniformChanged( uniform, i, j, cache ) === true ) {
+
+					const offset = uniform.__offset;
+
+					const values = Array.isArray( uniform.value ) ? uniform.value : [ uniform.value ];
+
+					let arrayOffset = 0;
+
+					for ( let k = 0; k < values.length; k ++ ) {
+
+						const value = values[ k ];
+
+						const info = getUniformSize( value );
+
+						// TODO add integer and struct support
+						if ( typeof value === 'number' || typeof value === 'boolean' ) {
+
+							uniform.__data[ 0 ] = value;
+							gl.bufferSubData( gl.UNIFORM_BUFFER, offset + arrayOffset, uniform.__data );
+
+						} else if ( value.isMatrix3 ) {
+
+							// manually converting 3x3 to 3x4
+
+							uniform.__data[ 0 ] = value.elements[ 0 ];
+							uniform.__data[ 1 ] = value.elements[ 1 ];
+							uniform.__data[ 2 ] = value.elements[ 2 ];
+							uniform.__data[ 3 ] = 0;
+							uniform.__data[ 4 ] = value.elements[ 3 ];
+							uniform.__data[ 5 ] = value.elements[ 4 ];
+							uniform.__data[ 6 ] = value.elements[ 5 ];
+							uniform.__data[ 7 ] = 0;
+							uniform.__data[ 8 ] = value.elements[ 6 ];
+							uniform.__data[ 9 ] = value.elements[ 7 ];
+							uniform.__data[ 10 ] = value.elements[ 8 ];
+							uniform.__data[ 11 ] = 0;
+
+						} else {
+
+							value.toArray( uniform.__data, arrayOffset );
+
+							arrayOffset += info.storage / Float32Array.BYTES_PER_ELEMENT;
+
+						}
+
+					}
+
+					gl.bufferSubData( gl.UNIFORM_BUFFER, offset, uniform.__data );
+
+				}
+
+			}
+
+		}
+
+		gl.bindBuffer( gl.UNIFORM_BUFFER, null );
+
+	}
+
+	function hasUniformChanged( uniform, index, indexArray, cache ) {
+
+		const value = uniform.value;
+		const indexString = index + '_' + indexArray;
+
+		if ( cache[ indexString ] === undefined ) {
+
+			// cache entry does not exist so far
+
+			if ( typeof value === 'number' || typeof value === 'boolean' ) {
+
+				cache[ indexString ] = value;
+
+			} else {
+
+				cache[ indexString ] = value.clone();
+
+			}
+
+			return true;
+
+		} else {
+
+			const cachedObject = cache[ indexString ];
+
+			// compare current value with cached entry
+
+			if ( typeof value === 'number' || typeof value === 'boolean' ) {
+
+				if ( cachedObject !== value ) {
+
+					cache[ indexString ] = value;
+					return true;
+
+				}
+
+			} else {
+
+				if ( cachedObject.equals( value ) === false ) {
+
+					cachedObject.copy( value );
+					return true;
+
+				}
+
+			}
+
+		}
+
+		return false;
+
+	}
+
+	function prepareUniformsGroup( uniformsGroup ) {
+
+		// determine total buffer size according to the STD140 layout
+		// Hint: STD140 is the only supported layout in WebGL 2
+
+		const uniforms = uniformsGroup.uniforms;
+
+		let offset = 0; // global buffer offset in bytes
+		const chunkSize = 16; // size of a chunk in bytes
+
+		for ( let i = 0, l = uniforms.length; i < l; i ++ ) {
+
+			const uniformArray = Array.isArray( uniforms[ i ] ) ? uniforms[ i ] : [ uniforms[ i ] ];
+
+			for ( let j = 0, jl = uniformArray.length; j < jl; j ++ ) {
+
+				const uniform = uniformArray[ j ];
+
+				const values = Array.isArray( uniform.value ) ? uniform.value : [ uniform.value ];
+
+				for ( let k = 0, kl = values.length; k < kl; k ++ ) {
+
+					const value = values[ k ];
+
+					const info = getUniformSize( value );
+
+					const chunkOffset = offset % chunkSize; // offset in the current chunk
+					const chunkPadding = chunkOffset % info.boundary; // required padding to match boundary
+					const chunkStart = chunkOffset + chunkPadding; // the start position in the current chunk for the data
+
+					offset += chunkPadding;
+
+					// Check for chunk overflow
+					if ( chunkStart !== 0 && ( chunkSize - chunkStart ) < info.storage ) {
+
+						// Add padding and adjust offset
+						offset += ( chunkSize - chunkStart );
+
+					}
+
+					// the following two properties will be used for partial buffer updates
+					uniform.__data = new Float32Array( info.storage / Float32Array.BYTES_PER_ELEMENT );
+					uniform.__offset = offset;
+
+					// Update the global offset
+					offset += info.storage;
+
+				}
+
+			}
+
+		}
+
+		// ensure correct final padding
+
+		const chunkOffset = offset % chunkSize;
+
+		if ( chunkOffset > 0 ) offset += ( chunkSize - chunkOffset );
+
+		//
+
+		uniformsGroup.__size = offset;
+		uniformsGroup.__cache = {};
+
+		return this;
+
+	}
+
+	function getUniformSize( value ) {
+
+		const info = {
+			boundary: 0, // bytes
+			storage: 0 // bytes
+		};
+
+		// determine sizes according to STD140
+
+		if ( typeof value === 'number' || typeof value === 'boolean' ) {
+
+			// float/int/bool
+
+			info.boundary = 4;
+			info.storage = 4;
+
+		} else if ( value.isVector2 ) {
+
+			// vec2
+
+			info.boundary = 8;
+			info.storage = 8;
+
+		} else if ( value.isVector3 || value.isColor ) {
+
+			// vec3
+
+			info.boundary = 16;
+			info.storage = 12; // evil: vec3 must start on a 16-byte boundary but it only consumes 12 bytes
+
+		} else if ( value.isVector4 ) {
+
+			// vec4
+
+			info.boundary = 16;
+			info.storage = 16;
+
+		} else if ( value.isMatrix3 ) {
+
+			// mat3 (in STD140 a 3x3 matrix is represented as 3x4)
+
+			info.boundary = 48;
+			info.storage = 48;
+
+		} else if ( value.isMatrix4 ) {
+
+			// mat4
+
+			info.boundary = 64;
+			info.storage = 64;
+
+		} else if ( value.isTexture ) {
+
+			console.warn( 'THREE.WebGLRenderer: Texture samplers can not be part of an uniforms group.' );
+
+		} else {
+
+			console.warn( 'THREE.WebGLRenderer: Unsupported uniform value type.', value );
+
+		}
+
+		return info;
+
+	}
+
+	function onUniformsGroupsDispose( event ) {
+
+		const uniformsGroup = event.target;
+
+		uniformsGroup.removeEventListener( 'dispose', onUniformsGroupsDispose );
+
+		const index = allocatedBindingPoints.indexOf( uniformsGroup.__bindingPointIndex );
+		allocatedBindingPoints.splice( index, 1 );
+
+		gl.deleteBuffer( buffers[ uniformsGroup.id ] );
+
+		delete buffers[ uniformsGroup.id ];
+		delete updateList[ uniformsGroup.id ];
+
+	}
+
+	function dispose() {
+
+		for ( const id in buffers ) {
+
+			gl.deleteBuffer( buffers[ id ] );
+
+		}
+
+		allocatedBindingPoints = [];
+		buffers = {};
+		updateList = {};
+
+	}
+
+	return {
+
+		bind: bind,
+		update: update,
+
+		dispose: dispose
+
+	};
+
+}
+
+class WebGLRenderer {
+
+	constructor( parameters = {} ) {
+
+		const {
+			canvas = createCanvasElement(),
+			context = null,
+			depth = true,
+			stencil = false,
+			alpha = false,
+			antialias = false,
+			premultipliedAlpha = true,
+			preserveDrawingBuffer = false,
+			powerPreference = 'default',
+			failIfMajorPerformanceCaveat = false,
+		} = parameters;
+
+		this.isWebGLRenderer = true;
+
+		let _alpha;
+
+		if ( context !== null ) {
+
+			if ( typeof WebGLRenderingContext !== 'undefined' && context instanceof WebGLRenderingContext ) {
+
+				throw new Error( 'THREE.WebGLRenderer: WebGL 1 is not supported since r163.' );
+
+			}
+
+			_alpha = context.getContextAttributes().alpha;
+
+		} else {
+
+			_alpha = alpha;
+
+		}
+
+		const uintClearColor = new Uint32Array( 4 );
+		const intClearColor = new Int32Array( 4 );
+
+		let currentRenderList = null;
+		let currentRenderState = null;
+
+		// render() can be called from within a callback triggered by another render.
+		// We track this so that the nested render call gets its list and state isolated from the parent render call.
+
+		const renderListStack = [];
+		const renderStateStack = [];
+
+		// public properties
+
+		this.domElement = canvas;
+
+		// Debug configuration container
+		this.debug = {
+
+			/**
+			 * Enables error checking and reporting when shader programs are being compiled
+			 * @type {boolean}
+			 */
+			checkShaderErrors: true,
+			/**
+			 * Callback for custom error reporting.
+			 * @type {?Function}
+			 */
+			onShaderError: null
+		};
+
+		// clearing
+
+		this.autoClear = true;
+		this.autoClearColor = true;
+		this.autoClearDepth = true;
+		this.autoClearStencil = true;
+
+		// scene graph
+
+		this.sortObjects = true;
+
+		// user-defined clipping
+
+		this.clippingPlanes = [];
+		this.localClippingEnabled = false;
+
+		// physically based shading
+
+		this._outputColorSpace = SRGBColorSpace;
+
+		// tone mapping
+
+		this.toneMapping = NoToneMapping;
+		this.toneMappingExposure = 1.0;
+
+		// internal properties
+
+		const _this = this;
+
+		let _isContextLost = false;
+
+		// internal state cache
+
+		let _currentActiveCubeFace = 0;
+		let _currentActiveMipmapLevel = 0;
+		let _currentRenderTarget = null;
+		let _currentMaterialId = - 1;
+
+		let _currentCamera = null;
+
+		const _currentViewport = new Vector4();
+		const _currentScissor = new Vector4();
+		let _currentScissorTest = null;
+
+		const _currentClearColor = new Color( 0x000000 );
+		let _currentClearAlpha = 0;
+
+		//
+
+		let _width = canvas.width;
+		let _height = canvas.height;
+
+		let _pixelRatio = 1;
+		let _opaqueSort = null;
+		let _transparentSort = null;
+
+		const _viewport = new Vector4( 0, 0, _width, _height );
+		const _scissor = new Vector4( 0, 0, _width, _height );
+		let _scissorTest = false;
+
+		// frustum
+
+		const _frustum = new Frustum();
+
+		// clipping
+
+		let _clippingEnabled = false;
+		let _localClippingEnabled = false;
+
+		// camera matrices cache
+
+		const _projScreenMatrix = new Matrix4();
+
+		const _vector3 = new Vector3();
+
+		const _vector4 = new Vector4();
+
+		const _emptyScene = { background: null, fog: null, environment: null, overrideMaterial: null, isScene: true };
+
+		let _renderBackground = false;
+
+		function getTargetPixelRatio() {
+
+			return _currentRenderTarget === null ? _pixelRatio : 1;
+
+		}
+
+		// initialize
+
+		let _gl = context;
+
+		function getContext( contextName, contextAttributes ) {
+
+			return canvas.getContext( contextName, contextAttributes );
+
+		}
+
+		try {
+
+			const contextAttributes = {
+				alpha: true,
+				depth,
+				stencil,
+				antialias,
+				premultipliedAlpha,
+				preserveDrawingBuffer,
+				powerPreference,
+				failIfMajorPerformanceCaveat,
+			};
+
+			// OffscreenCanvas does not have setAttribute, see #22811
+			if ( 'setAttribute' in canvas ) canvas.setAttribute( 'data-engine', `three.js r${REVISION}` );
+
+			// event listeners must be registered before WebGL context is created, see #12753
+			canvas.addEventListener( 'webglcontextlost', onContextLost, false );
+			canvas.addEventListener( 'webglcontextrestored', onContextRestore, false );
+			canvas.addEventListener( 'webglcontextcreationerror', onContextCreationError, false );
+
+			if ( _gl === null ) {
+
+				const contextName = 'webgl2';
+
+				_gl = getContext( contextName, contextAttributes );
+
+				if ( _gl === null ) {
+
+					if ( getContext( contextName ) ) {
+
+						throw new Error( 'Error creating WebGL context with your selected attributes.' );
+
+					} else {
+
+						throw new Error( 'Error creating WebGL context.' );
+
+					}
+
+				}
+
+			}
+
+		} catch ( error ) {
+
+			console.error( 'THREE.WebGLRenderer: ' + error.message );
+			throw error;
+
+		}
+
+		let extensions, capabilities, state, info;
+		let properties, textures, cubemaps, cubeuvmaps, attributes, geometries, objects;
+		let programCache, materials, renderLists, renderStates, clipping, shadowMap;
+
+		let background, morphtargets, bufferRenderer, indexedBufferRenderer;
+
+		let utils, bindingStates, uniformsGroups;
+
+		function initGLContext() {
+
+			extensions = new WebGLExtensions( _gl );
+			extensions.init();
+
+			utils = new WebGLUtils( _gl, extensions );
+
+			capabilities = new WebGLCapabilities( _gl, extensions, parameters, utils );
+
+			state = new WebGLState( _gl );
+
+			info = new WebGLInfo( _gl );
+			properties = new WebGLProperties();
+			textures = new WebGLTextures( _gl, extensions, state, properties, capabilities, utils, info );
+			cubemaps = new WebGLCubeMaps( _this );
+			cubeuvmaps = new WebGLCubeUVMaps( _this );
+			attributes = new WebGLAttributes( _gl );
+			bindingStates = new WebGLBindingStates( _gl, attributes );
+			geometries = new WebGLGeometries( _gl, attributes, info, bindingStates );
+			objects = new WebGLObjects( _gl, geometries, attributes, info );
+			morphtargets = new WebGLMorphtargets( _gl, capabilities, textures );
+			clipping = new WebGLClipping( properties );
+			programCache = new WebGLPrograms( _this, cubemaps, cubeuvmaps, extensions, capabilities, bindingStates, clipping );
+			materials = new WebGLMaterials( _this, properties );
+			renderLists = new WebGLRenderLists();
+			renderStates = new WebGLRenderStates( extensions );
+			background = new WebGLBackground( _this, cubemaps, cubeuvmaps, state, objects, _alpha, premultipliedAlpha );
+			shadowMap = new WebGLShadowMap( _this, objects, capabilities );
+			uniformsGroups = new WebGLUniformsGroups( _gl, info, capabilities, state );
+
+			bufferRenderer = new WebGLBufferRenderer( _gl, extensions, info );
+			indexedBufferRenderer = new WebGLIndexedBufferRenderer( _gl, extensions, info );
+
+			info.programs = programCache.programs;
+
+			_this.capabilities = capabilities;
+			_this.extensions = extensions;
+			_this.properties = properties;
+			_this.renderLists = renderLists;
+			_this.shadowMap = shadowMap;
+			_this.state = state;
+			_this.info = info;
+
+		}
+
+		initGLContext();
+
+		// xr
+
+		const xr = new WebXRManager( _this, _gl );
+
+		this.xr = xr;
+
+		// API
+
+		this.getContext = function () {
+
+			return _gl;
+
+		};
+
+		this.getContextAttributes = function () {
+
+			return _gl.getContextAttributes();
+
+		};
+
+		this.forceContextLoss = function () {
+
+			const extension = extensions.get( 'WEBGL_lose_context' );
+			if ( extension ) extension.loseContext();
+
+		};
+
+		this.forceContextRestore = function () {
+
+			const extension = extensions.get( 'WEBGL_lose_context' );
+			if ( extension ) extension.restoreContext();
+
+		};
+
+		this.getPixelRatio = function () {
+
+			return _pixelRatio;
+
+		};
+
+		this.setPixelRatio = function ( value ) {
+
+			if ( value === undefined ) return;
+
+			_pixelRatio = value;
+
+			this.setSize( _width, _height, false );
+
+		};
+
+		this.getSize = function ( target ) {
+
+			return target.set( _width, _height );
+
+		};
+
+		this.setSize = function ( width, height, updateStyle = true ) {
+
+			if ( xr.isPresenting ) {
+
+				console.warn( 'THREE.WebGLRenderer: Can\'t change size while VR device is presenting.' );
+				return;
+
+			}
+
+			_width = width;
+			_height = height;
+
+			canvas.width = Math.floor( width * _pixelRatio );
+			canvas.height = Math.floor( height * _pixelRatio );
+
+			if ( updateStyle === true ) {
+
+				canvas.style.width = width + 'px';
+				canvas.style.height = height + 'px';
+
+			}
+
+			this.setViewport( 0, 0, width, height );
+
+		};
+
+		this.getDrawingBufferSize = function ( target ) {
+
+			return target.set( _width * _pixelRatio, _height * _pixelRatio ).floor();
+
+		};
+
+		this.setDrawingBufferSize = function ( width, height, pixelRatio ) {
+
+			_width = width;
+			_height = height;
+
+			_pixelRatio = pixelRatio;
+
+			canvas.width = Math.floor( width * pixelRatio );
+			canvas.height = Math.floor( height * pixelRatio );
+
+			this.setViewport( 0, 0, width, height );
+
+		};
+
+		this.getCurrentViewport = function ( target ) {
+
+			return target.copy( _currentViewport );
+
+		};
+
+		this.getViewport = function ( target ) {
+
+			return target.copy( _viewport );
+
+		};
+
+		this.setViewport = function ( x, y, width, height ) {
+
+			if ( x.isVector4 ) {
+
+				_viewport.set( x.x, x.y, x.z, x.w );
+
+			} else {
+
+				_viewport.set( x, y, width, height );
+
+			}
+
+			state.viewport( _currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).round() );
+
+		};
+
+		this.getScissor = function ( target ) {
+
+			return target.copy( _scissor );
+
+		};
+
+		this.setScissor = function ( x, y, width, height ) {
+
+			if ( x.isVector4 ) {
+
+				_scissor.set( x.x, x.y, x.z, x.w );
+
+			} else {
+
+				_scissor.set( x, y, width, height );
+
+			}
+
+			state.scissor( _currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).round() );
+
+		};
+
+		this.getScissorTest = function () {
+
+			return _scissorTest;
+
+		};
+
+		this.setScissorTest = function ( boolean ) {
+
+			state.setScissorTest( _scissorTest = boolean );
+
+		};
+
+		this.setOpaqueSort = function ( method ) {
+
+			_opaqueSort = method;
+
+		};
+
+		this.setTransparentSort = function ( method ) {
+
+			_transparentSort = method;
+
+		};
+
+		// Clearing
+
+		this.getClearColor = function ( target ) {
+
+			return target.copy( background.getClearColor() );
+
+		};
+
+		this.setClearColor = function () {
+
+			background.setClearColor.apply( background, arguments );
+
+		};
+
+		this.getClearAlpha = function () {
+
+			return background.getClearAlpha();
+
+		};
+
+		this.setClearAlpha = function () {
+
+			background.setClearAlpha.apply( background, arguments );
+
+		};
+
+		this.clear = function ( color = true, depth = true, stencil = true ) {
+
+			let bits = 0;
+
+			if ( color ) {
+
+				// check if we're trying to clear an integer target
+				let isIntegerFormat = false;
+				if ( _currentRenderTarget !== null ) {
+
+					const targetFormat = _currentRenderTarget.texture.format;
+					isIntegerFormat = targetFormat === RGBAIntegerFormat ||
+						targetFormat === RGIntegerFormat ||
+						targetFormat === RedIntegerFormat;
+
+				}
+
+				// use the appropriate clear functions to clear the target if it's a signed
+				// or unsigned integer target
+				if ( isIntegerFormat ) {
+
+					const targetType = _currentRenderTarget.texture.type;
+					const isUnsignedType = targetType === UnsignedByteType ||
+						targetType === UnsignedIntType ||
+						targetType === UnsignedShortType ||
+						targetType === UnsignedInt248Type ||
+						targetType === UnsignedShort4444Type ||
+						targetType === UnsignedShort5551Type;
+
+					const clearColor = background.getClearColor();
+					const a = background.getClearAlpha();
+					const r = clearColor.r;
+					const g = clearColor.g;
+					const b = clearColor.b;
+
+					if ( isUnsignedType ) {
+
+						uintClearColor[ 0 ] = r;
+						uintClearColor[ 1 ] = g;
+						uintClearColor[ 2 ] = b;
+						uintClearColor[ 3 ] = a;
+						_gl.clearBufferuiv( _gl.COLOR, 0, uintClearColor );
+
+					} else {
+
+						intClearColor[ 0 ] = r;
+						intClearColor[ 1 ] = g;
+						intClearColor[ 2 ] = b;
+						intClearColor[ 3 ] = a;
+						_gl.clearBufferiv( _gl.COLOR, 0, intClearColor );
+
+					}
+
+				} else {
+
+					bits |= _gl.COLOR_BUFFER_BIT;
+
+				}
+
+			}
+
+			if ( depth ) bits |= _gl.DEPTH_BUFFER_BIT;
+			if ( stencil ) {
+
+				bits |= _gl.STENCIL_BUFFER_BIT;
+				this.state.buffers.stencil.setMask( 0xffffffff );
+
+			}
+
+			_gl.clear( bits );
+
+		};
+
+		this.clearColor = function () {
+
+			this.clear( true, false, false );
+
+		};
+
+		this.clearDepth = function () {
+
+			this.clear( false, true, false );
+
+		};
+
+		this.clearStencil = function () {
+
+			this.clear( false, false, true );
+
+		};
+
+		//
+
+		this.dispose = function () {
+
+			canvas.removeEventListener( 'webglcontextlost', onContextLost, false );
+			canvas.removeEventListener( 'webglcontextrestored', onContextRestore, false );
+			canvas.removeEventListener( 'webglcontextcreationerror', onContextCreationError, false );
+
+			renderLists.dispose();
+			renderStates.dispose();
+			properties.dispose();
+			cubemaps.dispose();
+			cubeuvmaps.dispose();
+			objects.dispose();
+			bindingStates.dispose();
+			uniformsGroups.dispose();
+			programCache.dispose();
+
+			xr.dispose();
+
+			xr.removeEventListener( 'sessionstart', onXRSessionStart );
+			xr.removeEventListener( 'sessionend', onXRSessionEnd );
+
+			animation.stop();
+
+		};
+
+		// Events
+
+		function onContextLost( event ) {
+
+			event.preventDefault();
+
+			console.log( 'THREE.WebGLRenderer: Context Lost.' );
+
+			_isContextLost = true;
+
+		}
+
+		function onContextRestore( /* event */ ) {
+
+			console.log( 'THREE.WebGLRenderer: Context Restored.' );
+
+			_isContextLost = false;
+
+			const infoAutoReset = info.autoReset;
+			const shadowMapEnabled = shadowMap.enabled;
+			const shadowMapAutoUpdate = shadowMap.autoUpdate;
+			const shadowMapNeedsUpdate = shadowMap.needsUpdate;
+			const shadowMapType = shadowMap.type;
+
+			initGLContext();
+
+			info.autoReset = infoAutoReset;
+			shadowMap.enabled = shadowMapEnabled;
+			shadowMap.autoUpdate = shadowMapAutoUpdate;
+			shadowMap.needsUpdate = shadowMapNeedsUpdate;
+			shadowMap.type = shadowMapType;
+
+		}
+
+		function onContextCreationError( event ) {
+
+			console.error( 'THREE.WebGLRenderer: A WebGL context could not be created. Reason: ', event.statusMessage );
+
+		}
+
+		function onMaterialDispose( event ) {
+
+			const material = event.target;
+
+			material.removeEventListener( 'dispose', onMaterialDispose );
+
+			deallocateMaterial( material );
+
+		}
+
+		// Buffer deallocation
+
+		function deallocateMaterial( material ) {
+
+			releaseMaterialProgramReferences( material );
+
+			properties.remove( material );
+
+		}
+
+
+		function releaseMaterialProgramReferences( material ) {
+
+			const programs = properties.get( material ).programs;
+
+			if ( programs !== undefined ) {
+
+				programs.forEach( function ( program ) {
+
+					programCache.releaseProgram( program );
+
+				} );
+
+				if ( material.isShaderMaterial ) {
+
+					programCache.releaseShaderCache( material );
+
+				}
+
+			}
+
+		}
+
+		// Buffer rendering
+
+		this.renderBufferDirect = function ( camera, scene, geometry, material, object, group ) {
+
+			if ( scene === null ) scene = _emptyScene; // renderBufferDirect second parameter used to be fog (could be null)
+
+			const frontFaceCW = ( object.isMesh && object.matrixWorld.determinant() < 0 );
+
+			const program = setProgram( camera, scene, geometry, material, object );
+
+			state.setMaterial( material, frontFaceCW );
+
+			//
+
+			let index = geometry.index;
+			let rangeFactor = 1;
+
+			if ( material.wireframe === true ) {
+
+				index = geometries.getWireframeAttribute( geometry );
+
+				if ( index === undefined ) return;
+
+				rangeFactor = 2;
+
+			}
+
+			//
+
+			const drawRange = geometry.drawRange;
+			const position = geometry.attributes.position;
+
+			let drawStart = drawRange.start * rangeFactor;
+			let drawEnd = ( drawRange.start + drawRange.count ) * rangeFactor;
+
+			if ( group !== null ) {
+
+				drawStart = Math.max( drawStart, group.start * rangeFactor );
+				drawEnd = Math.min( drawEnd, ( group.start + group.count ) * rangeFactor );
+
+			}
+
+			if ( index !== null ) {
+
+				drawStart = Math.max( drawStart, 0 );
+				drawEnd = Math.min( drawEnd, index.count );
+
+			} else if ( position !== undefined && position !== null ) {
+
+				drawStart = Math.max( drawStart, 0 );
+				drawEnd = Math.min( drawEnd, position.count );
+
+			}
+
+			const drawCount = drawEnd - drawStart;
+
+			if ( drawCount < 0 || drawCount === Infinity ) return;
+
+			//
+
+			bindingStates.setup( object, material, program, geometry, index );
+
+			let attribute;
+			let renderer = bufferRenderer;
+
+			if ( index !== null ) {
+
+				attribute = attributes.get( index );
+
+				renderer = indexedBufferRenderer;
+				renderer.setIndex( attribute );
+
+			}
+
+			//
+
+			if ( object.isMesh ) {
+
+				if ( material.wireframe === true ) {
+
+					state.setLineWidth( material.wireframeLinewidth * getTargetPixelRatio() );
+					renderer.setMode( _gl.LINES );
+
+				} else {
+
+					renderer.setMode( _gl.TRIANGLES );
+
+				}
+
+			} else if ( object.isLine ) {
+
+				let lineWidth = material.linewidth;
+
+				if ( lineWidth === undefined ) lineWidth = 1; // Not using Line*Material
+
+				state.setLineWidth( lineWidth * getTargetPixelRatio() );
+
+				if ( object.isLineSegments ) {
+
+					renderer.setMode( _gl.LINES );
+
+				} else if ( object.isLineLoop ) {
+
+					renderer.setMode( _gl.LINE_LOOP );
+
+				} else {
+
+					renderer.setMode( _gl.LINE_STRIP );
+
+				}
+
+			} else if ( object.isPoints ) {
+
+				renderer.setMode( _gl.POINTS );
+
+			} else if ( object.isSprite ) {
+
+				renderer.setMode( _gl.TRIANGLES );
+
+			}
+
+			if ( object.isBatchedMesh ) {
+
+				if ( object._multiDrawInstances !== null ) {
+
+					renderer.renderMultiDrawInstances( object._multiDrawStarts, object._multiDrawCounts, object._multiDrawCount, object._multiDrawInstances );
+
+				} else {
+
+					if ( ! extensions.get( 'WEBGL_multi_draw' ) ) {
+
+						const starts = object._multiDrawStarts;
+						const counts = object._multiDrawCounts;
+						const drawCount = object._multiDrawCount;
+						const bytesPerElement = index ? attributes.get( index ).bytesPerElement : 1;
+						const uniforms = properties.get( material ).currentProgram.getUniforms();
+						for ( let i = 0; i < drawCount; i ++ ) {
+
+							uniforms.setValue( _gl, '_gl_DrawID', i );
+							renderer.render( starts[ i ] / bytesPerElement, counts[ i ] );
+
+						}
+
+					} else {
+
+						renderer.renderMultiDraw( object._multiDrawStarts, object._multiDrawCounts, object._multiDrawCount );
+
+					}
+
+				}
+
+			} else if ( object.isInstancedMesh ) {
+
+				renderer.renderInstances( drawStart, drawCount, object.count );
+
+			} else if ( geometry.isInstancedBufferGeometry ) {
+
+				const maxInstanceCount = geometry._maxInstanceCount !== undefined ? geometry._maxInstanceCount : Infinity;
+				const instanceCount = Math.min( geometry.instanceCount, maxInstanceCount );
+
+				renderer.renderInstances( drawStart, drawCount, instanceCount );
+
+			} else {
+
+				renderer.render( drawStart, drawCount );
+
+			}
+
+		};
+
+		// Compile
+
+		function prepareMaterial( material, scene, object ) {
+
+			if ( material.transparent === true && material.side === DoubleSide && material.forceSinglePass === false ) {
+
+				material.side = BackSide;
+				material.needsUpdate = true;
+				getProgram( material, scene, object );
+
+				material.side = FrontSide;
+				material.needsUpdate = true;
+				getProgram( material, scene, object );
+
+				material.side = DoubleSide;
+
+			} else {
+
+				getProgram( material, scene, object );
+
+			}
+
+		}
+
+		this.compile = function ( scene, camera, targetScene = null ) {
+
+			if ( targetScene === null ) targetScene = scene;
+
+			currentRenderState = renderStates.get( targetScene );
+			currentRenderState.init( camera );
+
+			renderStateStack.push( currentRenderState );
+
+			// gather lights from both the target scene and the new object that will be added to the scene.
+
+			targetScene.traverseVisible( function ( object ) {
+
+				if ( object.isLight && object.layers.test( camera.layers ) ) {
+
+					currentRenderState.pushLight( object );
+
+					if ( object.castShadow ) {
+
+						currentRenderState.pushShadow( object );
+
+					}
+
+				}
+
+			} );
+
+			if ( scene !== targetScene ) {
+
+				scene.traverseVisible( function ( object ) {
+
+					if ( object.isLight && object.layers.test( camera.layers ) ) {
+
+						currentRenderState.pushLight( object );
+
+						if ( object.castShadow ) {
+
+							currentRenderState.pushShadow( object );
+
+						}
+
+					}
+
+				} );
+
+			}
+
+			currentRenderState.setupLights();
+
+			// Only initialize materials in the new scene, not the targetScene.
+
+			const materials = new Set();
+
+			scene.traverse( function ( object ) {
+
+				const material = object.material;
+
+				if ( material ) {
+
+					if ( Array.isArray( material ) ) {
+
+						for ( let i = 0; i < material.length; i ++ ) {
+
+							const material2 = material[ i ];
+
+							prepareMaterial( material2, targetScene, object );
+							materials.add( material2 );
+
+						}
+
+					} else {
+
+						prepareMaterial( material, targetScene, object );
+						materials.add( material );
+
+					}
+
+				}
+
+			} );
+
+			renderStateStack.pop();
+			currentRenderState = null;
+
+			return materials;
+
+		};
+
+		// compileAsync
+
+		this.compileAsync = function ( scene, camera, targetScene = null ) {
+
+			const materials = this.compile( scene, camera, targetScene );
+
+			// Wait for all the materials in the new object to indicate that they're
+			// ready to be used before resolving the promise.
+
+			return new Promise( ( resolve ) => {
+
+				function checkMaterialsReady() {
+
+					materials.forEach( function ( material ) {
+
+						const materialProperties = properties.get( material );
+						const program = materialProperties.currentProgram;
+
+						if ( program.isReady() ) {
+
+							// remove any programs that report they're ready to use from the list
+							materials.delete( material );
+
+						}
+
+					} );
+
+					// once the list of compiling materials is empty, call the callback
+
+					if ( materials.size === 0 ) {
+
+						resolve( scene );
+						return;
+
+					}
+
+					// if some materials are still not ready, wait a bit and check again
+
+					setTimeout( checkMaterialsReady, 10 );
+
+				}
+
+				if ( extensions.get( 'KHR_parallel_shader_compile' ) !== null ) {
+
+					// If we can check the compilation status of the materials without
+					// blocking then do so right away.
+
+					checkMaterialsReady();
+
+				} else {
+
+					// Otherwise start by waiting a bit to give the materials we just
+					// initialized a chance to finish.
+
+					setTimeout( checkMaterialsReady, 10 );
+
+				}
+
+			} );
+
+		};
+
+		// Animation Loop
+
+		let onAnimationFrameCallback = null;
+
+		function onAnimationFrame( time ) {
+
+			if ( onAnimationFrameCallback ) onAnimationFrameCallback( time );
+
+		}
+
+		function onXRSessionStart() {
+
+			animation.stop();
+
+		}
+
+		function onXRSessionEnd() {
+
+			animation.start();
+
+		}
+
+		const animation = new WebGLAnimation();
+		animation.setAnimationLoop( onAnimationFrame );
+
+		if ( typeof self !== 'undefined' ) animation.setContext( self );
+
+		this.setAnimationLoop = function ( callback ) {
+
+			onAnimationFrameCallback = callback;
+			xr.setAnimationLoop( callback );
+
+			( callback === null ) ? animation.stop() : animation.start();
+
+		};
+
+		xr.addEventListener( 'sessionstart', onXRSessionStart );
+		xr.addEventListener( 'sessionend', onXRSessionEnd );
+
+		// Rendering
+
+		this.render = function ( scene, camera ) {
+
+			if ( camera !== undefined && camera.isCamera !== true ) {
+
+				console.error( 'THREE.WebGLRenderer.render: camera is not an instance of THREE.Camera.' );
+				return;
+
+			}
+
+			if ( _isContextLost === true ) return;
+
+			// update scene graph
+
+			if ( scene.matrixWorldAutoUpdate === true ) scene.updateMatrixWorld();
+
+			// update camera matrices and frustum
+
+			if ( camera.parent === null && camera.matrixWorldAutoUpdate === true ) camera.updateMatrixWorld();
+
+			if ( xr.enabled === true && xr.isPresenting === true ) {
+
+				if ( xr.cameraAutoUpdate === true ) xr.updateCamera( camera );
+
+				camera = xr.getCamera(); // use XR camera for rendering
+
+			}
+
+			//
+			if ( scene.isScene === true ) scene.onBeforeRender( _this, scene, camera, _currentRenderTarget );
+
+			currentRenderState = renderStates.get( scene, renderStateStack.length );
+			currentRenderState.init( camera );
+
+			renderStateStack.push( currentRenderState );
+
+			_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
+			_frustum.setFromProjectionMatrix( _projScreenMatrix );
+
+			_localClippingEnabled = this.localClippingEnabled;
+			_clippingEnabled = clipping.init( this.clippingPlanes, _localClippingEnabled );
+
+			currentRenderList = renderLists.get( scene, renderListStack.length );
+			currentRenderList.init();
+
+			renderListStack.push( currentRenderList );
+
+			if ( xr.enabled === true && xr.isPresenting === true ) {
+
+				const depthSensingMesh = _this.xr.getDepthSensingMesh();
+
+				if ( depthSensingMesh !== null ) {
+
+					projectObject( depthSensingMesh, camera, - Infinity, _this.sortObjects );
+
+				}
+
+			}
+
+			projectObject( scene, camera, 0, _this.sortObjects );
+
+			currentRenderList.finish();
+
+			if ( _this.sortObjects === true ) {
+
+				currentRenderList.sort( _opaqueSort, _transparentSort );
+
+			}
+
+			_renderBackground = xr.enabled === false || xr.isPresenting === false || xr.hasDepthSensing() === false;
+			if ( _renderBackground ) {
+
+				background.addToRenderList( currentRenderList, scene );
+
+			}
+
+			//
+
+			this.info.render.frame ++;
+
+			if ( _clippingEnabled === true ) clipping.beginShadows();
+
+			const shadowsArray = currentRenderState.state.shadowsArray;
+
+			shadowMap.render( shadowsArray, scene, camera );
+
+			if ( _clippingEnabled === true ) clipping.endShadows();
+
+			//
+
+			if ( this.info.autoReset === true ) this.info.reset();
+
+			// render scene
+
+			const opaqueObjects = currentRenderList.opaque;
+			const transmissiveObjects = currentRenderList.transmissive;
+
+			currentRenderState.setupLights();
+
+			if ( camera.isArrayCamera ) {
+
+				const cameras = camera.cameras;
+
+				if ( transmissiveObjects.length > 0 ) {
+
+					for ( let i = 0, l = cameras.length; i < l; i ++ ) {
+
+						const camera2 = cameras[ i ];
+
+						renderTransmissionPass( opaqueObjects, transmissiveObjects, scene, camera2 );
+
+					}
+
+				}
+
+				if ( _renderBackground ) background.render( scene );
+
+				for ( let i = 0, l = cameras.length; i < l; i ++ ) {
+
+					const camera2 = cameras[ i ];
+
+					renderScene( currentRenderList, scene, camera2, camera2.viewport );
+
+				}
+
+			} else {
+
+				if ( transmissiveObjects.length > 0 ) renderTransmissionPass( opaqueObjects, transmissiveObjects, scene, camera );
+
+				if ( _renderBackground ) background.render( scene );
+
+				renderScene( currentRenderList, scene, camera );
+
+			}
+
+			//
+
+			if ( _currentRenderTarget !== null ) {
+
+				// resolve multisample renderbuffers to a single-sample texture if necessary
+
+				textures.updateMultisampleRenderTarget( _currentRenderTarget );
+
+				// Generate mipmap if we're using any kind of mipmap filtering
+
+				textures.updateRenderTargetMipmap( _currentRenderTarget );
+
+			}
+
+			//
+
+			if ( scene.isScene === true ) scene.onAfterRender( _this, scene, camera );
+
+			// _gl.finish();
+
+			bindingStates.resetDefaultState();
+			_currentMaterialId = - 1;
+			_currentCamera = null;
+
+			renderStateStack.pop();
+
+			if ( renderStateStack.length > 0 ) {
+
+				currentRenderState = renderStateStack[ renderStateStack.length - 1 ];
+
+				if ( _clippingEnabled === true ) clipping.setGlobalState( _this.clippingPlanes, currentRenderState.state.camera );
+
+			} else {
+
+				currentRenderState = null;
+
+			}
+
+			renderListStack.pop();
+
+			if ( renderListStack.length > 0 ) {
+
+				currentRenderList = renderListStack[ renderListStack.length - 1 ];
+
+			} else {
+
+				currentRenderList = null;
+
+			}
+
+		};
+
+		function projectObject( object, camera, groupOrder, sortObjects ) {
+
+			if ( object.visible === false ) return;
+
+			const visible = object.layers.test( camera.layers );
+
+			if ( visible ) {
+
+				if ( object.isGroup ) {
+
+					groupOrder = object.renderOrder;
+
+				} else if ( object.isLOD ) {
+
+					if ( object.autoUpdate === true ) object.update( camera );
+
+				} else if ( object.isLight ) {
+
+					currentRenderState.pushLight( object );
+
+					if ( object.castShadow ) {
+
+						currentRenderState.pushShadow( object );
+
+					}
+
+				} else if ( object.isSprite ) {
+
+					if ( ! object.frustumCulled || _frustum.intersectsSprite( object ) ) {
+
+						if ( sortObjects ) {
+
+							_vector4.setFromMatrixPosition( object.matrixWorld )
+								.applyMatrix4( _projScreenMatrix );
+
+						}
+
+						const geometry = objects.update( object );
+						const material = object.material;
+
+						if ( material.visible ) {
+
+							currentRenderList.push( object, geometry, material, groupOrder, _vector4.z, null );
+
+						}
+
+					}
+
+				} else if ( object.isMesh || object.isLine || object.isPoints ) {
+
+					if ( ! object.frustumCulled || _frustum.intersectsObject( object ) ) {
+
+						const geometry = objects.update( object );
+						const material = object.material;
+
+						if ( sortObjects ) {
+
+							if ( object.boundingSphere !== undefined ) {
+
+								if ( object.boundingSphere === null ) object.computeBoundingSphere();
+								_vector4.copy( object.boundingSphere.center );
+
+							} else {
+
+								if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
+								_vector4.copy( geometry.boundingSphere.center );
+
+							}
+
+							_vector4
+								.applyMatrix4( object.matrixWorld )
+								.applyMatrix4( _projScreenMatrix );
+
+						}
+
+						if ( Array.isArray( material ) ) {
+
+							const groups = geometry.groups;
+
+							for ( let i = 0, l = groups.length; i < l; i ++ ) {
+
+								const group = groups[ i ];
+								const groupMaterial = material[ group.materialIndex ];
+
+								if ( groupMaterial && groupMaterial.visible ) {
+
+									currentRenderList.push( object, geometry, groupMaterial, groupOrder, _vector4.z, group );
+
+								}
+
+							}
+
+						} else if ( material.visible ) {
+
+							currentRenderList.push( object, geometry, material, groupOrder, _vector4.z, null );
+
+						}
+
+					}
+
+				}
+
+			}
+
+			const children = object.children;
+
+			for ( let i = 0, l = children.length; i < l; i ++ ) {
+
+				projectObject( children[ i ], camera, groupOrder, sortObjects );
+
+			}
+
+		}
+
+		function renderScene( currentRenderList, scene, camera, viewport ) {
+
+			const opaqueObjects = currentRenderList.opaque;
+			const transmissiveObjects = currentRenderList.transmissive;
+			const transparentObjects = currentRenderList.transparent;
+
+			currentRenderState.setupLightsView( camera );
+
+			if ( _clippingEnabled === true ) clipping.setGlobalState( _this.clippingPlanes, camera );
+
+			if ( viewport ) state.viewport( _currentViewport.copy( viewport ) );
+
+			if ( opaqueObjects.length > 0 ) renderObjects( opaqueObjects, scene, camera );
+			if ( transmissiveObjects.length > 0 ) renderObjects( transmissiveObjects, scene, camera );
+			if ( transparentObjects.length > 0 ) renderObjects( transparentObjects, scene, camera );
+
+			// Ensure depth buffer writing is enabled so it can be cleared on next render
+
+			state.buffers.depth.setTest( true );
+			state.buffers.depth.setMask( true );
+			state.buffers.color.setMask( true );
+
+			state.setPolygonOffset( false );
+
+		}
+
+		function renderTransmissionPass( opaqueObjects, transmissiveObjects, scene, camera ) {
+
+			const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;
+
+			if ( overrideMaterial !== null ) {
+
+				return;
+
+			}
+
+			if ( currentRenderState.state.transmissionRenderTarget[ camera.id ] === undefined ) {
+
+				currentRenderState.state.transmissionRenderTarget[ camera.id ] = new WebGLRenderTarget( 1, 1, {
+					generateMipmaps: true,
+					type: ( extensions.has( 'EXT_color_buffer_half_float' ) || extensions.has( 'EXT_color_buffer_float' ) ) ? HalfFloatType : UnsignedByteType,
+					minFilter: LinearMipmapLinearFilter,
+					samples: 4,
+					stencilBuffer: stencil,
+					resolveDepthBuffer: false,
+					resolveStencilBuffer: false,
+					colorSpace: ColorManagement.workingColorSpace,
+				} );
+
+				// debug
+
+				/*
+				const geometry = new PlaneGeometry();
+				const material = new MeshBasicMaterial( { map: _transmissionRenderTarget.texture } );
+
+				const mesh = new Mesh( geometry, material );
+				scene.add( mesh );
+				*/
+
+			}
+
+			const transmissionRenderTarget = currentRenderState.state.transmissionRenderTarget[ camera.id ];
+
+			const activeViewport = camera.viewport || _currentViewport;
+			transmissionRenderTarget.setSize( activeViewport.z, activeViewport.w );
+
+			//
+
+			const currentRenderTarget = _this.getRenderTarget();
+			_this.setRenderTarget( transmissionRenderTarget );
+
+			_this.getClearColor( _currentClearColor );
+			_currentClearAlpha = _this.getClearAlpha();
+			if ( _currentClearAlpha < 1 ) _this.setClearColor( 0xffffff, 0.5 );
+
+			_this.clear();
+
+			if ( _renderBackground ) background.render( scene );
+
+			// Turn off the features which can affect the frag color for opaque objects pass.
+			// Otherwise they are applied twice in opaque objects pass and transmission objects pass.
+			const currentToneMapping = _this.toneMapping;
+			_this.toneMapping = NoToneMapping;
+
+			// Remove viewport from camera to avoid nested render calls resetting viewport to it (e.g Reflector).
+			// Transmission render pass requires viewport to match the transmissionRenderTarget.
+			const currentCameraViewport = camera.viewport;
+			if ( camera.viewport !== undefined ) camera.viewport = undefined;
+
+			currentRenderState.setupLightsView( camera );
+
+			if ( _clippingEnabled === true ) clipping.setGlobalState( _this.clippingPlanes, camera );
+
+			renderObjects( opaqueObjects, scene, camera );
+
+			textures.updateMultisampleRenderTarget( transmissionRenderTarget );
+			textures.updateRenderTargetMipmap( transmissionRenderTarget );
+
+			if ( extensions.has( 'WEBGL_multisampled_render_to_texture' ) === false ) { // see #28131
+
+				let renderTargetNeedsUpdate = false;
+
+				for ( let i = 0, l = transmissiveObjects.length; i < l; i ++ ) {
+
+					const renderItem = transmissiveObjects[ i ];
+
+					const object = renderItem.object;
+					const geometry = renderItem.geometry;
+					const material = renderItem.material;
+					const group = renderItem.group;
+
+					if ( material.side === DoubleSide && object.layers.test( camera.layers ) ) {
+
+						const currentSide = material.side;
+
+						material.side = BackSide;
+						material.needsUpdate = true;
+
+						renderObject( object, scene, camera, geometry, material, group );
+
+						material.side = currentSide;
+						material.needsUpdate = true;
+
+						renderTargetNeedsUpdate = true;
+
+					}
+
+				}
+
+				if ( renderTargetNeedsUpdate === true ) {
+
+					textures.updateMultisampleRenderTarget( transmissionRenderTarget );
+					textures.updateRenderTargetMipmap( transmissionRenderTarget );
+
+				}
+
+			}
+
+			_this.setRenderTarget( currentRenderTarget );
+
+			_this.setClearColor( _currentClearColor, _currentClearAlpha );
+
+			if ( currentCameraViewport !== undefined ) camera.viewport = currentCameraViewport;
+
+			_this.toneMapping = currentToneMapping;
+
+		}
+
+		function renderObjects( renderList, scene, camera ) {
+
+			const overrideMaterial = scene.isScene === true ? scene.overrideMaterial : null;
+
+			for ( let i = 0, l = renderList.length; i < l; i ++ ) {
+
+				const renderItem = renderList[ i ];
+
+				const object = renderItem.object;
+				const geometry = renderItem.geometry;
+				const material = overrideMaterial === null ? renderItem.material : overrideMaterial;
+				const group = renderItem.group;
+
+				if ( object.layers.test( camera.layers ) ) {
+
+					renderObject( object, scene, camera, geometry, material, group );
+
+				}
+
+			}
+
+		}
+
+		function renderObject( object, scene, camera, geometry, material, group ) {
+
+			object.onBeforeRender( _this, scene, camera, geometry, material, group );
+
+			object.modelViewMatrix.multiplyMatrices( camera.matrixWorldInverse, object.matrixWorld );
+			object.normalMatrix.getNormalMatrix( object.modelViewMatrix );
+
+			material.onBeforeRender( _this, scene, camera, geometry, object, group );
+
+			if ( material.transparent === true && material.side === DoubleSide && material.forceSinglePass === false ) {
+
+				material.side = BackSide;
+				material.needsUpdate = true;
+				_this.renderBufferDirect( camera, scene, geometry, material, object, group );
+
+				material.side = FrontSide;
+				material.needsUpdate = true;
+				_this.renderBufferDirect( camera, scene, geometry, material, object, group );
+
+				material.side = DoubleSide;
+
+			} else {
+
+				_this.renderBufferDirect( camera, scene, geometry, material, object, group );
+
+			}
+
+			object.onAfterRender( _this, scene, camera, geometry, material, group );
+
+		}
+
+		function getProgram( material, scene, object ) {
+
+			if ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...
+
+			const materialProperties = properties.get( material );
+
+			const lights = currentRenderState.state.lights;
+			const shadowsArray = currentRenderState.state.shadowsArray;
+
+			const lightsStateVersion = lights.state.version;
+
+			const parameters = programCache.getParameters( material, lights.state, shadowsArray, scene, object );
+			const programCacheKey = programCache.getProgramCacheKey( parameters );
+
+			let programs = materialProperties.programs;
+
+			// always update environment and fog - changing these trigger an getProgram call, but it's possible that the program doesn't change
+
+			materialProperties.environment = material.isMeshStandardMaterial ? scene.environment : null;
+			materialProperties.fog = scene.fog;
+			materialProperties.envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || materialProperties.environment );
+			materialProperties.envMapRotation = ( materialProperties.environment !== null && material.envMap === null ) ? scene.environmentRotation : material.envMapRotation;
+
+			if ( programs === undefined ) {
+
+				// new material
+
+				material.addEventListener( 'dispose', onMaterialDispose );
+
+				programs = new Map();
+				materialProperties.programs = programs;
+
+			}
+
+			let program = programs.get( programCacheKey );
+
+			if ( program !== undefined ) {
+
+				// early out if program and light state is identical
+
+				if ( materialProperties.currentProgram === program && materialProperties.lightsStateVersion === lightsStateVersion ) {
+
+					updateCommonMaterialProperties( material, parameters );
+
+					return program;
+
+				}
+
+			} else {
+
+				parameters.uniforms = programCache.getUniforms( material );
+
+				material.onBeforeCompile( parameters, _this );
+
+				program = programCache.acquireProgram( parameters, programCacheKey );
+				programs.set( programCacheKey, program );
+
+				materialProperties.uniforms = parameters.uniforms;
+
+			}
+
+			const uniforms = materialProperties.uniforms;
+
+			if ( ( ! material.isShaderMaterial && ! material.isRawShaderMaterial ) || material.clipping === true ) {
+
+				uniforms.clippingPlanes = clipping.uniform;
+
+			}
+
+			updateCommonMaterialProperties( material, parameters );
+
+			// store the light setup it was created for
+
+			materialProperties.needsLights = materialNeedsLights( material );
+			materialProperties.lightsStateVersion = lightsStateVersion;
+
+			if ( materialProperties.needsLights ) {
+
+				// wire up the material to this renderer's lighting state
+
+				uniforms.ambientLightColor.value = lights.state.ambient;
+				uniforms.lightProbe.value = lights.state.probe;
+				uniforms.directionalLights.value = lights.state.directional;
+				uniforms.directionalLightShadows.value = lights.state.directionalShadow;
+				uniforms.spotLights.value = lights.state.spot;
+				uniforms.spotLightShadows.value = lights.state.spotShadow;
+				uniforms.rectAreaLights.value = lights.state.rectArea;
+				uniforms.ltc_1.value = lights.state.rectAreaLTC1;
+				uniforms.ltc_2.value = lights.state.rectAreaLTC2;
+				uniforms.pointLights.value = lights.state.point;
+				uniforms.pointLightShadows.value = lights.state.pointShadow;
+				uniforms.hemisphereLights.value = lights.state.hemi;
+
+				uniforms.directionalShadowMap.value = lights.state.directionalShadowMap;
+				uniforms.directionalShadowMatrix.value = lights.state.directionalShadowMatrix;
+				uniforms.spotShadowMap.value = lights.state.spotShadowMap;
+				uniforms.spotLightMatrix.value = lights.state.spotLightMatrix;
+				uniforms.spotLightMap.value = lights.state.spotLightMap;
+				uniforms.pointShadowMap.value = lights.state.pointShadowMap;
+				uniforms.pointShadowMatrix.value = lights.state.pointShadowMatrix;
+				// TODO (abelnation): add area lights shadow info to uniforms
+
+			}
+
+			materialProperties.currentProgram = program;
+			materialProperties.uniformsList = null;
+
+			return program;
+
+		}
+
+		function getUniformList( materialProperties ) {
+
+			if ( materialProperties.uniformsList === null ) {
+
+				const progUniforms = materialProperties.currentProgram.getUniforms();
+				materialProperties.uniformsList = WebGLUniforms.seqWithValue( progUniforms.seq, materialProperties.uniforms );
+
+			}
+
+			return materialProperties.uniformsList;
+
+		}
+
+		function updateCommonMaterialProperties( material, parameters ) {
+
+			const materialProperties = properties.get( material );
+
+			materialProperties.outputColorSpace = parameters.outputColorSpace;
+			materialProperties.batching = parameters.batching;
+			materialProperties.batchingColor = parameters.batchingColor;
+			materialProperties.instancing = parameters.instancing;
+			materialProperties.instancingColor = parameters.instancingColor;
+			materialProperties.instancingMorph = parameters.instancingMorph;
+			materialProperties.skinning = parameters.skinning;
+			materialProperties.morphTargets = parameters.morphTargets;
+			materialProperties.morphNormals = parameters.morphNormals;
+			materialProperties.morphColors = parameters.morphColors;
+			materialProperties.morphTargetsCount = parameters.morphTargetsCount;
+			materialProperties.numClippingPlanes = parameters.numClippingPlanes;
+			materialProperties.numIntersection = parameters.numClipIntersection;
+			materialProperties.vertexAlphas = parameters.vertexAlphas;
+			materialProperties.vertexTangents = parameters.vertexTangents;
+			materialProperties.toneMapping = parameters.toneMapping;
+
+		}
+
+		function setProgram( camera, scene, geometry, material, object ) {
+
+			if ( scene.isScene !== true ) scene = _emptyScene; // scene could be a Mesh, Line, Points, ...
+
+			textures.resetTextureUnits();
+
+			const fog = scene.fog;
+			const environment = material.isMeshStandardMaterial ? scene.environment : null;
+			const colorSpace = ( _currentRenderTarget === null ) ? _this.outputColorSpace : ( _currentRenderTarget.isXRRenderTarget === true ? _currentRenderTarget.texture.colorSpace : LinearSRGBColorSpace );
+			const envMap = ( material.isMeshStandardMaterial ? cubeuvmaps : cubemaps ).get( material.envMap || environment );
+			const vertexAlphas = material.vertexColors === true && !! geometry.attributes.color && geometry.attributes.color.itemSize === 4;
+			const vertexTangents = !! geometry.attributes.tangent && ( !! material.normalMap || material.anisotropy > 0 );
+			const morphTargets = !! geometry.morphAttributes.position;
+			const morphNormals = !! geometry.morphAttributes.normal;
+			const morphColors = !! geometry.morphAttributes.color;
+
+			let toneMapping = NoToneMapping;
+
+			if ( material.toneMapped ) {
+
+				if ( _currentRenderTarget === null || _currentRenderTarget.isXRRenderTarget === true ) {
+
+					toneMapping = _this.toneMapping;
+
+				}
+
+			}
+
+			const morphAttribute = geometry.morphAttributes.position || geometry.morphAttributes.normal || geometry.morphAttributes.color;
+			const morphTargetsCount = ( morphAttribute !== undefined ) ? morphAttribute.length : 0;
+
+			const materialProperties = properties.get( material );
+			const lights = currentRenderState.state.lights;
+
+			if ( _clippingEnabled === true ) {
+
+				if ( _localClippingEnabled === true || camera !== _currentCamera ) {
+
+					const useCache =
+						camera === _currentCamera &&
+						material.id === _currentMaterialId;
+
+					// we might want to call this function with some ClippingGroup
+					// object instead of the material, once it becomes feasible
+					// (#8465, #8379)
+					clipping.setState( material, camera, useCache );
+
+				}
+
+			}
+
+			//
+
+			let needsProgramChange = false;
+
+			if ( material.version === materialProperties.__version ) {
+
+				if ( materialProperties.needsLights && ( materialProperties.lightsStateVersion !== lights.state.version ) ) {
+
+					needsProgramChange = true;
+
+				} else if ( materialProperties.outputColorSpace !== colorSpace ) {
+
+					needsProgramChange = true;
+
+				} else if ( object.isBatchedMesh && materialProperties.batching === false ) {
+
+					needsProgramChange = true;
+
+				} else if ( ! object.isBatchedMesh && materialProperties.batching === true ) {
+
+					needsProgramChange = true;
+
+				} else if ( object.isBatchedMesh && materialProperties.batchingColor === true && object.colorTexture === null ) {
+
+					needsProgramChange = true;
+
+				} else if ( object.isBatchedMesh && materialProperties.batchingColor === false && object.colorTexture !== null ) {
+
+					needsProgramChange = true;
+
+				} else if ( object.isInstancedMesh && materialProperties.instancing === false ) {
+
+					needsProgramChange = true;
+
+				} else if ( ! object.isInstancedMesh && materialProperties.instancing === true ) {
+
+					needsProgramChange = true;
+
+				} else if ( object.isSkinnedMesh && materialProperties.skinning === false ) {
+
+					needsProgramChange = true;
+
+				} else if ( ! object.isSkinnedMesh && materialProperties.skinning === true ) {
+
+					needsProgramChange = true;
+
+				} else if ( object.isInstancedMesh && materialProperties.instancingColor === true && object.instanceColor === null ) {
+
+					needsProgramChange = true;
+
+				} else if ( object.isInstancedMesh && materialProperties.instancingColor === false && object.instanceColor !== null ) {
+
+					needsProgramChange = true;
+
+				} else if ( object.isInstancedMesh && materialProperties.instancingMorph === true && object.morphTexture === null ) {
+
+					needsProgramChange = true;
+
+				} else if ( object.isInstancedMesh && materialProperties.instancingMorph === false && object.morphTexture !== null ) {
+
+					needsProgramChange = true;
+
+				} else if ( materialProperties.envMap !== envMap ) {
+
+					needsProgramChange = true;
+
+				} else if ( material.fog === true && materialProperties.fog !== fog ) {
+
+					needsProgramChange = true;
+
+				} else if ( materialProperties.numClippingPlanes !== undefined &&
+					( materialProperties.numClippingPlanes !== clipping.numPlanes ||
+					materialProperties.numIntersection !== clipping.numIntersection ) ) {
+
+					needsProgramChange = true;
+
+				} else if ( materialProperties.vertexAlphas !== vertexAlphas ) {
+
+					needsProgramChange = true;
+
+				} else if ( materialProperties.vertexTangents !== vertexTangents ) {
+
+					needsProgramChange = true;
+
+				} else if ( materialProperties.morphTargets !== morphTargets ) {
+
+					needsProgramChange = true;
+
+				} else if ( materialProperties.morphNormals !== morphNormals ) {
+
+					needsProgramChange = true;
+
+				} else if ( materialProperties.morphColors !== morphColors ) {
+
+					needsProgramChange = true;
+
+				} else if ( materialProperties.toneMapping !== toneMapping ) {
+
+					needsProgramChange = true;
+
+				} else if ( materialProperties.morphTargetsCount !== morphTargetsCount ) {
+
+					needsProgramChange = true;
+
+				}
+
+			} else {
+
+				needsProgramChange = true;
+				materialProperties.__version = material.version;
+
+			}
+
+			//
+
+			let program = materialProperties.currentProgram;
+
+			if ( needsProgramChange === true ) {
+
+				program = getProgram( material, scene, object );
+
+			}
+
+			let refreshProgram = false;
+			let refreshMaterial = false;
+			let refreshLights = false;
+
+			const p_uniforms = program.getUniforms(),
+				m_uniforms = materialProperties.uniforms;
+
+			if ( state.useProgram( program.program ) ) {
+
+				refreshProgram = true;
+				refreshMaterial = true;
+				refreshLights = true;
+
+			}
+
+			if ( material.id !== _currentMaterialId ) {
+
+				_currentMaterialId = material.id;
+
+				refreshMaterial = true;
+
+			}
+
+			if ( refreshProgram || _currentCamera !== camera ) {
+
+				// common camera uniforms
+
+				p_uniforms.setValue( _gl, 'projectionMatrix', camera.projectionMatrix );
+				p_uniforms.setValue( _gl, 'viewMatrix', camera.matrixWorldInverse );
+
+				const uCamPos = p_uniforms.map.cameraPosition;
+
+				if ( uCamPos !== undefined ) {
+
+					uCamPos.setValue( _gl, _vector3.setFromMatrixPosition( camera.matrixWorld ) );
+
+				}
+
+				if ( capabilities.logarithmicDepthBuffer ) {
+
+					p_uniforms.setValue( _gl, 'logDepthBufFC',
+						2.0 / ( Math.log( camera.far + 1.0 ) / Math.LN2 ) );
+
+				}
+
+				// consider moving isOrthographic to UniformLib and WebGLMaterials, see https://github.com/mrdoob/three.js/pull/26467#issuecomment-1645185067
+
+				if ( material.isMeshPhongMaterial ||
+					material.isMeshToonMaterial ||
+					material.isMeshLambertMaterial ||
+					material.isMeshBasicMaterial ||
+					material.isMeshStandardMaterial ||
+					material.isShaderMaterial ) {
+
+					p_uniforms.setValue( _gl, 'isOrthographic', camera.isOrthographicCamera === true );
+
+				}
+
+				if ( _currentCamera !== camera ) {
+
+					_currentCamera = camera;
+
+					// lighting uniforms depend on the camera so enforce an update
+					// now, in case this material supports lights - or later, when
+					// the next material that does gets activated:
+
+					refreshMaterial = true;		// set to true on material change
+					refreshLights = true;		// remains set until update done
+
+				}
+
+			}
+
+			// skinning and morph target uniforms must be set even if material didn't change
+			// auto-setting of texture unit for bone and morph texture must go before other textures
+			// otherwise textures used for skinning and morphing can take over texture units reserved for other material textures
+
+			if ( object.isSkinnedMesh ) {
+
+				p_uniforms.setOptional( _gl, object, 'bindMatrix' );
+				p_uniforms.setOptional( _gl, object, 'bindMatrixInverse' );
+
+				const skeleton = object.skeleton;
+
+				if ( skeleton ) {
+
+					if ( skeleton.boneTexture === null ) skeleton.computeBoneTexture();
+
+					p_uniforms.setValue( _gl, 'boneTexture', skeleton.boneTexture, textures );
+
+				}
+
+			}
+
+			if ( object.isBatchedMesh ) {
+
+				p_uniforms.setOptional( _gl, object, 'batchingTexture' );
+				p_uniforms.setValue( _gl, 'batchingTexture', object._matricesTexture, textures );
+
+				p_uniforms.setOptional( _gl, object, 'batchingIdTexture' );
+				p_uniforms.setValue( _gl, 'batchingIdTexture', object._indirectTexture, textures );
+
+				p_uniforms.setOptional( _gl, object, 'batchingColorTexture' );
+				if ( object._colorsTexture !== null ) {
+
+					p_uniforms.setValue( _gl, 'batchingColorTexture', object._colorsTexture, textures );
+
+				}
+
+			}
+
+			const morphAttributes = geometry.morphAttributes;
+
+			if ( morphAttributes.position !== undefined || morphAttributes.normal !== undefined || ( morphAttributes.color !== undefined ) ) {
+
+				morphtargets.update( object, geometry, program );
+
+			}
+
+			if ( refreshMaterial || materialProperties.receiveShadow !== object.receiveShadow ) {
+
+				materialProperties.receiveShadow = object.receiveShadow;
+				p_uniforms.setValue( _gl, 'receiveShadow', object.receiveShadow );
+
+			}
+
+			// https://github.com/mrdoob/three.js/pull/24467#issuecomment-1209031512
+
+			if ( material.isMeshGouraudMaterial && material.envMap !== null ) {
+
+				m_uniforms.envMap.value = envMap;
+
+				m_uniforms.flipEnvMap.value = ( envMap.isCubeTexture && envMap.isRenderTargetTexture === false ) ? - 1 : 1;
+
+			}
+
+			if ( material.isMeshStandardMaterial && material.envMap === null && scene.environment !== null ) {
+
+				m_uniforms.envMapIntensity.value = scene.environmentIntensity;
+
+			}
+
+			if ( refreshMaterial ) {
+
+				p_uniforms.setValue( _gl, 'toneMappingExposure', _this.toneMappingExposure );
+
+				if ( materialProperties.needsLights ) {
+
+					// the current material requires lighting info
+
+					// note: all lighting uniforms are always set correctly
+					// they simply reference the renderer's state for their
+					// values
+					//
+					// use the current material's .needsUpdate flags to set
+					// the GL state when required
+
+					markUniformsLightsNeedsUpdate( m_uniforms, refreshLights );
+
+				}
+
+				// refresh uniforms common to several materials
+
+				if ( fog && material.fog === true ) {
+
+					materials.refreshFogUniforms( m_uniforms, fog );
+
+				}
+
+				materials.refreshMaterialUniforms( m_uniforms, material, _pixelRatio, _height, currentRenderState.state.transmissionRenderTarget[ camera.id ] );
+
+				WebGLUniforms.upload( _gl, getUniformList( materialProperties ), m_uniforms, textures );
+
+			}
+
+			if ( material.isShaderMaterial && material.uniformsNeedUpdate === true ) {
+
+				WebGLUniforms.upload( _gl, getUniformList( materialProperties ), m_uniforms, textures );
+				material.uniformsNeedUpdate = false;
+
+			}
+
+			if ( material.isSpriteMaterial ) {
+
+				p_uniforms.setValue( _gl, 'center', object.center );
+
+			}
+
+			// common matrices
+
+			p_uniforms.setValue( _gl, 'modelViewMatrix', object.modelViewMatrix );
+			p_uniforms.setValue( _gl, 'normalMatrix', object.normalMatrix );
+			p_uniforms.setValue( _gl, 'modelMatrix', object.matrixWorld );
+
+			// UBOs
+
+			if ( material.isShaderMaterial || material.isRawShaderMaterial ) {
+
+				const groups = material.uniformsGroups;
+
+				for ( let i = 0, l = groups.length; i < l; i ++ ) {
+
+					const group = groups[ i ];
+
+					uniformsGroups.update( group, program );
+					uniformsGroups.bind( group, program );
+
+				}
+
+			}
+
+			return program;
+
+		}
+
+		// If uniforms are marked as clean, they don't need to be loaded to the GPU.
+
+		function markUniformsLightsNeedsUpdate( uniforms, value ) {
+
+			uniforms.ambientLightColor.needsUpdate = value;
+			uniforms.lightProbe.needsUpdate = value;
+
+			uniforms.directionalLights.needsUpdate = value;
+			uniforms.directionalLightShadows.needsUpdate = value;
+			uniforms.pointLights.needsUpdate = value;
+			uniforms.pointLightShadows.needsUpdate = value;
+			uniforms.spotLights.needsUpdate = value;
+			uniforms.spotLightShadows.needsUpdate = value;
+			uniforms.rectAreaLights.needsUpdate = value;
+			uniforms.hemisphereLights.needsUpdate = value;
+
+		}
+
+		function materialNeedsLights( material ) {
+
+			return material.isMeshLambertMaterial || material.isMeshToonMaterial || material.isMeshPhongMaterial ||
+				material.isMeshStandardMaterial || material.isShadowMaterial ||
+				( material.isShaderMaterial && material.lights === true );
+
+		}
+
+		this.getActiveCubeFace = function () {
+
+			return _currentActiveCubeFace;
+
+		};
+
+		this.getActiveMipmapLevel = function () {
+
+			return _currentActiveMipmapLevel;
+
+		};
+
+		this.getRenderTarget = function () {
+
+			return _currentRenderTarget;
+
+		};
+
+		this.setRenderTargetTextures = function ( renderTarget, colorTexture, depthTexture ) {
+
+			properties.get( renderTarget.texture ).__webglTexture = colorTexture;
+			properties.get( renderTarget.depthTexture ).__webglTexture = depthTexture;
+
+			const renderTargetProperties = properties.get( renderTarget );
+			renderTargetProperties.__hasExternalTextures = true;
+
+			renderTargetProperties.__autoAllocateDepthBuffer = depthTexture === undefined;
+
+			if ( ! renderTargetProperties.__autoAllocateDepthBuffer ) {
+
+				// The multisample_render_to_texture extension doesn't work properly if there
+				// are midframe flushes and an external depth buffer. Disable use of the extension.
+				if ( extensions.has( 'WEBGL_multisampled_render_to_texture' ) === true ) {
+
+					console.warn( 'THREE.WebGLRenderer: Render-to-texture extension was disabled because an external texture was provided' );
+					renderTargetProperties.__useRenderToTexture = false;
+
+				}
+
+			}
+
+		};
+
+		this.setRenderTargetFramebuffer = function ( renderTarget, defaultFramebuffer ) {
+
+			const renderTargetProperties = properties.get( renderTarget );
+			renderTargetProperties.__webglFramebuffer = defaultFramebuffer;
+			renderTargetProperties.__useDefaultFramebuffer = defaultFramebuffer === undefined;
+
+		};
+
+		this.setRenderTarget = function ( renderTarget, activeCubeFace = 0, activeMipmapLevel = 0 ) {
+
+			_currentRenderTarget = renderTarget;
+			_currentActiveCubeFace = activeCubeFace;
+			_currentActiveMipmapLevel = activeMipmapLevel;
+
+			let useDefaultFramebuffer = true;
+			let framebuffer = null;
+			let isCube = false;
+			let isRenderTarget3D = false;
+
+			if ( renderTarget ) {
+
+				const renderTargetProperties = properties.get( renderTarget );
+
+				if ( renderTargetProperties.__useDefaultFramebuffer !== undefined ) {
+
+					// We need to make sure to rebind the framebuffer.
+					state.bindFramebuffer( _gl.FRAMEBUFFER, null );
+					useDefaultFramebuffer = false;
+
+				} else if ( renderTargetProperties.__webglFramebuffer === undefined ) {
+
+					textures.setupRenderTarget( renderTarget );
+
+				} else if ( renderTargetProperties.__hasExternalTextures ) {
+
+					// Color and depth texture must be rebound in order for the swapchain to update.
+					textures.rebindTextures( renderTarget, properties.get( renderTarget.texture ).__webglTexture, properties.get( renderTarget.depthTexture ).__webglTexture );
+
+				} else if ( renderTarget.depthBuffer ) {
+
+					// check if the depth texture is already bound to the frame buffer and that it's been initialized
+					const depthTexture = renderTarget.depthTexture;
+					if ( renderTargetProperties.__boundDepthTexture !== depthTexture ) {
+
+						// check if the depth texture is compatible
+						if (
+							depthTexture !== null &&
+							properties.has( depthTexture ) &&
+							( renderTarget.width !== depthTexture.image.width || renderTarget.height !== depthTexture.image.height )
+						) {
+
+							throw new Error( 'WebGLRenderTarget: Attached DepthTexture is initialized to the incorrect size.' );
+
+						}
+
+						// Swap the depth buffer to the currently attached one
+						textures.setupDepthRenderbuffer( renderTarget );
+
+					}
+
+				}
+
+				const texture = renderTarget.texture;
+
+				if ( texture.isData3DTexture || texture.isDataArrayTexture || texture.isCompressedArrayTexture ) {
+
+					isRenderTarget3D = true;
+
+				}
+
+				const __webglFramebuffer = properties.get( renderTarget ).__webglFramebuffer;
+
+				if ( renderTarget.isWebGLCubeRenderTarget ) {
+
+					if ( Array.isArray( __webglFramebuffer[ activeCubeFace ] ) ) {
+
+						framebuffer = __webglFramebuffer[ activeCubeFace ][ activeMipmapLevel ];
+
+					} else {
+
+						framebuffer = __webglFramebuffer[ activeCubeFace ];
+
+					}
+
+					isCube = true;
+
+				} else if ( ( renderTarget.samples > 0 ) && textures.useMultisampledRTT( renderTarget ) === false ) {
+
+					framebuffer = properties.get( renderTarget ).__webglMultisampledFramebuffer;
+
+				} else {
+
+					if ( Array.isArray( __webglFramebuffer ) ) {
+
+						framebuffer = __webglFramebuffer[ activeMipmapLevel ];
+
+					} else {
+
+						framebuffer = __webglFramebuffer;
+
+					}
+
+				}
+
+				_currentViewport.copy( renderTarget.viewport );
+				_currentScissor.copy( renderTarget.scissor );
+				_currentScissorTest = renderTarget.scissorTest;
+
+			} else {
+
+				_currentViewport.copy( _viewport ).multiplyScalar( _pixelRatio ).floor();
+				_currentScissor.copy( _scissor ).multiplyScalar( _pixelRatio ).floor();
+				_currentScissorTest = _scissorTest;
+
+			}
+
+			const framebufferBound = state.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
+
+			if ( framebufferBound && useDefaultFramebuffer ) {
+
+				state.drawBuffers( renderTarget, framebuffer );
+
+			}
+
+			state.viewport( _currentViewport );
+			state.scissor( _currentScissor );
+			state.setScissorTest( _currentScissorTest );
+
+			if ( isCube ) {
+
+				const textureProperties = properties.get( renderTarget.texture );
+				_gl.framebufferTexture2D( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, _gl.TEXTURE_CUBE_MAP_POSITIVE_X + activeCubeFace, textureProperties.__webglTexture, activeMipmapLevel );
+
+			} else if ( isRenderTarget3D ) {
+
+				const textureProperties = properties.get( renderTarget.texture );
+				const layer = activeCubeFace || 0;
+				_gl.framebufferTextureLayer( _gl.FRAMEBUFFER, _gl.COLOR_ATTACHMENT0, textureProperties.__webglTexture, activeMipmapLevel || 0, layer );
+
+			}
+
+			_currentMaterialId = - 1; // reset current material to ensure correct uniform bindings
+
+		};
+
+		this.readRenderTargetPixels = function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {
+
+			if ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {
+
+				console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );
+				return;
+
+			}
+
+			let framebuffer = properties.get( renderTarget ).__webglFramebuffer;
+
+			if ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {
+
+				framebuffer = framebuffer[ activeCubeFaceIndex ];
+
+			}
+
+			if ( framebuffer ) {
+
+				state.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
+
+				try {
+
+					const texture = renderTarget.texture;
+					const textureFormat = texture.format;
+					const textureType = texture.type;
+
+					if ( ! capabilities.textureFormatReadable( textureFormat ) ) {
+
+						console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in RGBA or implementation defined format.' );
+						return;
+
+					}
+
+					if ( ! capabilities.textureTypeReadable( textureType ) ) {
+
+						console.error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not in UnsignedByteType or implementation defined type.' );
+						return;
+
+					}
+
+					// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)
+
+					if ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {
+
+						_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), buffer );
+
+					}
+
+				} finally {
+
+					// restore framebuffer of current render target if necessary
+
+					const framebuffer = ( _currentRenderTarget !== null ) ? properties.get( _currentRenderTarget ).__webglFramebuffer : null;
+					state.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
+
+				}
+
+			}
+
+		};
+
+		this.readRenderTargetPixelsAsync = async function ( renderTarget, x, y, width, height, buffer, activeCubeFaceIndex ) {
+
+			if ( ! ( renderTarget && renderTarget.isWebGLRenderTarget ) ) {
+
+				throw new Error( 'THREE.WebGLRenderer.readRenderTargetPixels: renderTarget is not THREE.WebGLRenderTarget.' );
+
+			}
+
+			let framebuffer = properties.get( renderTarget ).__webglFramebuffer;
+			if ( renderTarget.isWebGLCubeRenderTarget && activeCubeFaceIndex !== undefined ) {
+
+				framebuffer = framebuffer[ activeCubeFaceIndex ];
+
+			}
+
+			if ( framebuffer ) {
+
+				state.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
+
+				try {
+
+					const texture = renderTarget.texture;
+					const textureFormat = texture.format;
+					const textureType = texture.type;
+
+					if ( ! capabilities.textureFormatReadable( textureFormat ) ) {
+
+						throw new Error( 'THREE.WebGLRenderer.readRenderTargetPixelsAsync: renderTarget is not in RGBA or implementation defined format.' );
+
+					}
+
+					if ( ! capabilities.textureTypeReadable( textureType ) ) {
+
+						throw new Error( 'THREE.WebGLRenderer.readRenderTargetPixelsAsync: renderTarget is not in UnsignedByteType or implementation defined type.' );
+
+					}
+
+					// the following if statement ensures valid read requests (no out-of-bounds pixels, see #8604)
+					if ( ( x >= 0 && x <= ( renderTarget.width - width ) ) && ( y >= 0 && y <= ( renderTarget.height - height ) ) ) {
+
+						const glBuffer = _gl.createBuffer();
+						_gl.bindBuffer( _gl.PIXEL_PACK_BUFFER, glBuffer );
+						_gl.bufferData( _gl.PIXEL_PACK_BUFFER, buffer.byteLength, _gl.STREAM_READ );
+						_gl.readPixels( x, y, width, height, utils.convert( textureFormat ), utils.convert( textureType ), 0 );
+						_gl.flush();
+
+						// check if the commands have finished every 8 ms
+						const sync = _gl.fenceSync( _gl.SYNC_GPU_COMMANDS_COMPLETE, 0 );
+						await probeAsync( _gl, sync, 4 );
+
+						try {
+
+							_gl.bindBuffer( _gl.PIXEL_PACK_BUFFER, glBuffer );
+							_gl.getBufferSubData( _gl.PIXEL_PACK_BUFFER, 0, buffer );
+
+						} finally {
+
+							_gl.deleteBuffer( glBuffer );
+							_gl.deleteSync( sync );
+
+						}
+
+						return buffer;
+
+					}
+
+				} finally {
+
+					// restore framebuffer of current render target if necessary
+
+					const framebuffer = ( _currentRenderTarget !== null ) ? properties.get( _currentRenderTarget ).__webglFramebuffer : null;
+					state.bindFramebuffer( _gl.FRAMEBUFFER, framebuffer );
+
+				}
+
+			}
+
+		};
+
+		this.copyFramebufferToTexture = function ( texture, position = null, level = 0 ) {
+
+			// support previous signature with position first
+			if ( texture.isTexture !== true ) {
+
+				// @deprecated, r165
+				warnOnce( 'WebGLRenderer: copyFramebufferToTexture function signature has changed.' );
+
+				position = arguments[ 0 ] || null;
+				texture = arguments[ 1 ];
+
+			}
+
+			const levelScale = Math.pow( 2, - level );
+			const width = Math.floor( texture.image.width * levelScale );
+			const height = Math.floor( texture.image.height * levelScale );
+
+			const x = position !== null ? position.x : 0;
+			const y = position !== null ? position.y : 0;
+
+			textures.setTexture2D( texture, 0 );
+
+			_gl.copyTexSubImage2D( _gl.TEXTURE_2D, level, 0, 0, x, y, width, height );
+
+			state.unbindTexture();
+
+		};
+
+		this.copyTextureToTexture = function ( srcTexture, dstTexture, srcRegion = null, dstPosition = null, level = 0 ) {
+
+			// support previous signature with dstPosition first
+			if ( srcTexture.isTexture !== true ) {
+
+				// @deprecated, r165
+				warnOnce( 'WebGLRenderer: copyTextureToTexture function signature has changed.' );
+
+				dstPosition = arguments[ 0 ] || null;
+				srcTexture = arguments[ 1 ];
+				dstTexture = arguments[ 2 ];
+				level = arguments[ 3 ] || 0;
+				srcRegion = null;
+
+			}
+
+			let width, height, minX, minY;
+			let dstX, dstY;
+			if ( srcRegion !== null ) {
+
+				width = srcRegion.max.x - srcRegion.min.x;
+				height = srcRegion.max.y - srcRegion.min.y;
+				minX = srcRegion.min.x;
+				minY = srcRegion.min.y;
+
+			} else {
+
+				width = srcTexture.image.width;
+				height = srcTexture.image.height;
+				minX = 0;
+				minY = 0;
+
+			}
+
+			if ( dstPosition !== null ) {
+
+				dstX = dstPosition.x;
+				dstY = dstPosition.y;
+
+			} else {
+
+				dstX = 0;
+				dstY = 0;
+
+			}
+
+			const glFormat = utils.convert( dstTexture.format );
+			const glType = utils.convert( dstTexture.type );
+
+			textures.setTexture2D( dstTexture, 0 );
+
+			// As another texture upload may have changed pixelStorei
+			// parameters, make sure they are correct for the dstTexture
+			_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, dstTexture.flipY );
+			_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, dstTexture.premultiplyAlpha );
+			_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, dstTexture.unpackAlignment );
+
+			const currentUnpackRowLen = _gl.getParameter( _gl.UNPACK_ROW_LENGTH );
+			const currentUnpackImageHeight = _gl.getParameter( _gl.UNPACK_IMAGE_HEIGHT );
+			const currentUnpackSkipPixels = _gl.getParameter( _gl.UNPACK_SKIP_PIXELS );
+			const currentUnpackSkipRows = _gl.getParameter( _gl.UNPACK_SKIP_ROWS );
+			const currentUnpackSkipImages = _gl.getParameter( _gl.UNPACK_SKIP_IMAGES );
+
+			const image = srcTexture.isCompressedTexture ? srcTexture.mipmaps[ level ] : srcTexture.image;
+
+			_gl.pixelStorei( _gl.UNPACK_ROW_LENGTH, image.width );
+			_gl.pixelStorei( _gl.UNPACK_IMAGE_HEIGHT, image.height );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_PIXELS, minX );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_ROWS, minY );
+
+			if ( srcTexture.isDataTexture ) {
+
+				_gl.texSubImage2D( _gl.TEXTURE_2D, level, dstX, dstY, width, height, glFormat, glType, image.data );
+
+			} else {
+
+				if ( srcTexture.isCompressedTexture ) {
+
+					_gl.compressedTexSubImage2D( _gl.TEXTURE_2D, level, dstX, dstY, image.width, image.height, glFormat, image.data );
+
+				} else {
+
+					_gl.texSubImage2D( _gl.TEXTURE_2D, level, dstX, dstY, width, height, glFormat, glType, image );
+
+				}
+
+			}
+
+			_gl.pixelStorei( _gl.UNPACK_ROW_LENGTH, currentUnpackRowLen );
+			_gl.pixelStorei( _gl.UNPACK_IMAGE_HEIGHT, currentUnpackImageHeight );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_PIXELS, currentUnpackSkipPixels );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_ROWS, currentUnpackSkipRows );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_IMAGES, currentUnpackSkipImages );
+
+			// Generate mipmaps only when copying level 0
+			if ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( _gl.TEXTURE_2D );
+
+			state.unbindTexture();
+
+		};
+
+		this.copyTextureToTexture3D = function ( srcTexture, dstTexture, srcRegion = null, dstPosition = null, level = 0 ) {
+
+			// support previous signature with source box first
+			if ( srcTexture.isTexture !== true ) {
+
+				// @deprecated, r165
+				warnOnce( 'WebGLRenderer: copyTextureToTexture3D function signature has changed.' );
+
+				srcRegion = arguments[ 0 ] || null;
+				dstPosition = arguments[ 1 ] || null;
+				srcTexture = arguments[ 2 ];
+				dstTexture = arguments[ 3 ];
+				level = arguments[ 4 ] || 0;
+
+			}
+
+			let width, height, depth, minX, minY, minZ;
+			let dstX, dstY, dstZ;
+			const image = srcTexture.isCompressedTexture ? srcTexture.mipmaps[ level ] : srcTexture.image;
+			if ( srcRegion !== null ) {
+
+				width = srcRegion.max.x - srcRegion.min.x;
+				height = srcRegion.max.y - srcRegion.min.y;
+				depth = srcRegion.max.z - srcRegion.min.z;
+				minX = srcRegion.min.x;
+				minY = srcRegion.min.y;
+				minZ = srcRegion.min.z;
+
+			} else {
+
+				width = image.width;
+				height = image.height;
+				depth = image.depth;
+				minX = 0;
+				minY = 0;
+				minZ = 0;
+
+			}
+
+			if ( dstPosition !== null ) {
+
+				dstX = dstPosition.x;
+				dstY = dstPosition.y;
+				dstZ = dstPosition.z;
+
+			} else {
+
+				dstX = 0;
+				dstY = 0;
+				dstZ = 0;
+
+			}
+
+			const glFormat = utils.convert( dstTexture.format );
+			const glType = utils.convert( dstTexture.type );
+			let glTarget;
+
+			if ( dstTexture.isData3DTexture ) {
+
+				textures.setTexture3D( dstTexture, 0 );
+				glTarget = _gl.TEXTURE_3D;
+
+			} else if ( dstTexture.isDataArrayTexture || dstTexture.isCompressedArrayTexture ) {
+
+				textures.setTexture2DArray( dstTexture, 0 );
+				glTarget = _gl.TEXTURE_2D_ARRAY;
+
+			} else {
+
+				console.warn( 'THREE.WebGLRenderer.copyTextureToTexture3D: only supports THREE.DataTexture3D and THREE.DataTexture2DArray.' );
+				return;
+
+			}
+
+			_gl.pixelStorei( _gl.UNPACK_FLIP_Y_WEBGL, dstTexture.flipY );
+			_gl.pixelStorei( _gl.UNPACK_PREMULTIPLY_ALPHA_WEBGL, dstTexture.premultiplyAlpha );
+			_gl.pixelStorei( _gl.UNPACK_ALIGNMENT, dstTexture.unpackAlignment );
+
+			const currentUnpackRowLen = _gl.getParameter( _gl.UNPACK_ROW_LENGTH );
+			const currentUnpackImageHeight = _gl.getParameter( _gl.UNPACK_IMAGE_HEIGHT );
+			const currentUnpackSkipPixels = _gl.getParameter( _gl.UNPACK_SKIP_PIXELS );
+			const currentUnpackSkipRows = _gl.getParameter( _gl.UNPACK_SKIP_ROWS );
+			const currentUnpackSkipImages = _gl.getParameter( _gl.UNPACK_SKIP_IMAGES );
+
+			_gl.pixelStorei( _gl.UNPACK_ROW_LENGTH, image.width );
+			_gl.pixelStorei( _gl.UNPACK_IMAGE_HEIGHT, image.height );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_PIXELS, minX );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_ROWS, minY );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_IMAGES, minZ );
+
+			if ( srcTexture.isDataTexture || srcTexture.isData3DTexture ) {
+
+				_gl.texSubImage3D( glTarget, level, dstX, dstY, dstZ, width, height, depth, glFormat, glType, image.data );
+
+			} else {
+
+				if ( dstTexture.isCompressedArrayTexture ) {
+
+					_gl.compressedTexSubImage3D( glTarget, level, dstX, dstY, dstZ, width, height, depth, glFormat, image.data );
+
+				} else {
+
+					_gl.texSubImage3D( glTarget, level, dstX, dstY, dstZ, width, height, depth, glFormat, glType, image );
+
+				}
+
+			}
+
+			_gl.pixelStorei( _gl.UNPACK_ROW_LENGTH, currentUnpackRowLen );
+			_gl.pixelStorei( _gl.UNPACK_IMAGE_HEIGHT, currentUnpackImageHeight );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_PIXELS, currentUnpackSkipPixels );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_ROWS, currentUnpackSkipRows );
+			_gl.pixelStorei( _gl.UNPACK_SKIP_IMAGES, currentUnpackSkipImages );
+
+			// Generate mipmaps only when copying level 0
+			if ( level === 0 && dstTexture.generateMipmaps ) _gl.generateMipmap( glTarget );
+
+			state.unbindTexture();
+
+		};
+
+		this.initRenderTarget = function ( target ) {
+
+			if ( properties.get( target ).__webglFramebuffer === undefined ) {
+
+				textures.setupRenderTarget( target );
+
+			}
+
+		};
+
+		this.initTexture = function ( texture ) {
+
+			if ( texture.isCubeTexture ) {
+
+				textures.setTextureCube( texture, 0 );
+
+			} else if ( texture.isData3DTexture ) {
+
+				textures.setTexture3D( texture, 0 );
+
+			} else if ( texture.isDataArrayTexture || texture.isCompressedArrayTexture ) {
+
+				textures.setTexture2DArray( texture, 0 );
+
+			} else {
+
+				textures.setTexture2D( texture, 0 );
+
+			}
+
+			state.unbindTexture();
+
+		};
+
+		this.resetState = function () {
+
+			_currentActiveCubeFace = 0;
+			_currentActiveMipmapLevel = 0;
+			_currentRenderTarget = null;
+
+			state.reset();
+			bindingStates.reset();
+
+		};
+
+		if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
+
+			__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );
+
+		}
+
+	}
+
+	get coordinateSystem() {
+
+		return WebGLCoordinateSystem;
+
+	}
+
+	get outputColorSpace() {
+
+		return this._outputColorSpace;
+
+	}
+
+	set outputColorSpace( colorSpace ) {
+
+		this._outputColorSpace = colorSpace;
+
+		const gl = this.getContext();
+		gl.drawingBufferColorSpace = colorSpace === DisplayP3ColorSpace ? 'display-p3' : 'srgb';
+		gl.unpackColorSpace = ColorManagement.workingColorSpace === LinearDisplayP3ColorSpace ? 'display-p3' : 'srgb';
+
+	}
+
+}
+
+class FogExp2 {
+
+	constructor( color, density = 0.00025 ) {
+
+		this.isFogExp2 = true;
+
+		this.name = '';
+
+		this.color = new Color( color );
+		this.density = density;
+
+	}
+
+	clone() {
+
+		return new FogExp2( this.color, this.density );
+
+	}
+
+	toJSON( /* meta */ ) {
+
+		return {
+			type: 'FogExp2',
+			name: this.name,
+			color: this.color.getHex(),
+			density: this.density
+		};
+
+	}
+
+}
+
+class Fog {
+
+	constructor( color, near = 1, far = 1000 ) {
+
+		this.isFog = true;
+
+		this.name = '';
+
+		this.color = new Color( color );
+
+		this.near = near;
+		this.far = far;
+
+	}
+
+	clone() {
+
+		return new Fog( this.color, this.near, this.far );
+
+	}
+
+	toJSON( /* meta */ ) {
+
+		return {
+			type: 'Fog',
+			name: this.name,
+			color: this.color.getHex(),
+			near: this.near,
+			far: this.far
+		};
+
+	}
+
+}
+
+class Scene extends Object3D {
+
+	constructor() {
+
+		super();
+
+		this.isScene = true;
+
+		this.type = 'Scene';
+
+		this.background = null;
+		this.environment = null;
+		this.fog = null;
+
+		this.backgroundBlurriness = 0;
+		this.backgroundIntensity = 1;
+		this.backgroundRotation = new Euler();
+
+		this.environmentIntensity = 1;
+		this.environmentRotation = new Euler();
+
+		this.overrideMaterial = null;
+
+		if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
+
+			__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'observe', { detail: this } ) );
+
+		}
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		if ( source.background !== null ) this.background = source.background.clone();
+		if ( source.environment !== null ) this.environment = source.environment.clone();
+		if ( source.fog !== null ) this.fog = source.fog.clone();
+
+		this.backgroundBlurriness = source.backgroundBlurriness;
+		this.backgroundIntensity = source.backgroundIntensity;
+		this.backgroundRotation.copy( source.backgroundRotation );
+
+		this.environmentIntensity = source.environmentIntensity;
+		this.environmentRotation.copy( source.environmentRotation );
+
+		if ( source.overrideMaterial !== null ) this.overrideMaterial = source.overrideMaterial.clone();
+
+		this.matrixAutoUpdate = source.matrixAutoUpdate;
+
+		return this;
+
+	}
+
+	toJSON( meta ) {
+
+		const data = super.toJSON( meta );
+
+		if ( this.fog !== null ) data.object.fog = this.fog.toJSON();
+
+		if ( this.backgroundBlurriness > 0 ) data.object.backgroundBlurriness = this.backgroundBlurriness;
+		if ( this.backgroundIntensity !== 1 ) data.object.backgroundIntensity = this.backgroundIntensity;
+		data.object.backgroundRotation = this.backgroundRotation.toArray();
+
+		if ( this.environmentIntensity !== 1 ) data.object.environmentIntensity = this.environmentIntensity;
+		data.object.environmentRotation = this.environmentRotation.toArray();
+
+		return data;
+
+	}
+
+}
+
+class InterleavedBuffer {
+
+	constructor( array, stride ) {
+
+		this.isInterleavedBuffer = true;
+
+		this.array = array;
+		this.stride = stride;
+		this.count = array !== undefined ? array.length / stride : 0;
+
+		this.usage = StaticDrawUsage;
+		this._updateRange = { offset: 0, count: - 1 };
+		this.updateRanges = [];
+
+		this.version = 0;
+
+		this.uuid = generateUUID();
+
+	}
+
+	onUploadCallback() {}
+
+	set needsUpdate( value ) {
+
+		if ( value === true ) this.version ++;
+
+	}
+
+	get updateRange() {
+
+		warnOnce( 'THREE.InterleavedBuffer: updateRange() is deprecated and will be removed in r169. Use addUpdateRange() instead.' ); // @deprecated, r159
+		return this._updateRange;
+
+	}
+
+	setUsage( value ) {
+
+		this.usage = value;
+
+		return this;
+
+	}
+
+	addUpdateRange( start, count ) {
+
+		this.updateRanges.push( { start, count } );
+
+	}
+
+	clearUpdateRanges() {
+
+		this.updateRanges.length = 0;
+
+	}
+
+	copy( source ) {
+
+		this.array = new source.array.constructor( source.array );
+		this.count = source.count;
+		this.stride = source.stride;
+		this.usage = source.usage;
+
+		return this;
+
+	}
+
+	copyAt( index1, attribute, index2 ) {
+
+		index1 *= this.stride;
+		index2 *= attribute.stride;
+
+		for ( let i = 0, l = this.stride; i < l; i ++ ) {
+
+			this.array[ index1 + i ] = attribute.array[ index2 + i ];
+
+		}
+
+		return this;
+
+	}
+
+	set( value, offset = 0 ) {
+
+		this.array.set( value, offset );
+
+		return this;
+
+	}
+
+	clone( data ) {
+
+		if ( data.arrayBuffers === undefined ) {
+
+			data.arrayBuffers = {};
+
+		}
+
+		if ( this.array.buffer._uuid === undefined ) {
+
+			this.array.buffer._uuid = generateUUID();
+
+		}
+
+		if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {
+
+			data.arrayBuffers[ this.array.buffer._uuid ] = this.array.slice( 0 ).buffer;
+
+		}
+
+		const array = new this.array.constructor( data.arrayBuffers[ this.array.buffer._uuid ] );
+
+		const ib = new this.constructor( array, this.stride );
+		ib.setUsage( this.usage );
+
+		return ib;
+
+	}
+
+	onUpload( callback ) {
+
+		this.onUploadCallback = callback;
+
+		return this;
+
+	}
+
+	toJSON( data ) {
+
+		if ( data.arrayBuffers === undefined ) {
+
+			data.arrayBuffers = {};
+
+		}
+
+		// generate UUID for array buffer if necessary
+
+		if ( this.array.buffer._uuid === undefined ) {
+
+			this.array.buffer._uuid = generateUUID();
+
+		}
+
+		if ( data.arrayBuffers[ this.array.buffer._uuid ] === undefined ) {
+
+			data.arrayBuffers[ this.array.buffer._uuid ] = Array.from( new Uint32Array( this.array.buffer ) );
+
+		}
+
+		//
+
+		return {
+			uuid: this.uuid,
+			buffer: this.array.buffer._uuid,
+			type: this.array.constructor.name,
+			stride: this.stride
+		};
+
+	}
+
+}
+
+const _vector$6 = /*@__PURE__*/ new Vector3();
+
+class InterleavedBufferAttribute {
+
+	constructor( interleavedBuffer, itemSize, offset, normalized = false ) {
+
+		this.isInterleavedBufferAttribute = true;
+
+		this.name = '';
+
+		this.data = interleavedBuffer;
+		this.itemSize = itemSize;
+		this.offset = offset;
+
+		this.normalized = normalized;
+
+	}
+
+	get count() {
+
+		return this.data.count;
+
+	}
+
+	get array() {
+
+		return this.data.array;
+
+	}
+
+	set needsUpdate( value ) {
+
+		this.data.needsUpdate = value;
+
+	}
+
+	applyMatrix4( m ) {
+
+		for ( let i = 0, l = this.data.count; i < l; i ++ ) {
+
+			_vector$6.fromBufferAttribute( this, i );
+
+			_vector$6.applyMatrix4( m );
+
+			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );
+
+		}
+
+		return this;
+
+	}
+
+	applyNormalMatrix( m ) {
+
+		for ( let i = 0, l = this.count; i < l; i ++ ) {
+
+			_vector$6.fromBufferAttribute( this, i );
+
+			_vector$6.applyNormalMatrix( m );
+
+			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );
+
+		}
+
+		return this;
+
+	}
+
+	transformDirection( m ) {
+
+		for ( let i = 0, l = this.count; i < l; i ++ ) {
+
+			_vector$6.fromBufferAttribute( this, i );
+
+			_vector$6.transformDirection( m );
+
+			this.setXYZ( i, _vector$6.x, _vector$6.y, _vector$6.z );
+
+		}
+
+		return this;
+
+	}
+
+	getComponent( index, component ) {
+
+		let value = this.array[ index * this.data.stride + this.offset + component ];
+
+		if ( this.normalized ) value = denormalize( value, this.array );
+
+		return value;
+
+	}
+
+	setComponent( index, component, value ) {
+
+		if ( this.normalized ) value = normalize( value, this.array );
+
+		this.data.array[ index * this.data.stride + this.offset + component ] = value;
+
+		return this;
+
+	}
+
+	setX( index, x ) {
+
+		if ( this.normalized ) x = normalize( x, this.array );
+
+		this.data.array[ index * this.data.stride + this.offset ] = x;
+
+		return this;
+
+	}
+
+	setY( index, y ) {
+
+		if ( this.normalized ) y = normalize( y, this.array );
+
+		this.data.array[ index * this.data.stride + this.offset + 1 ] = y;
+
+		return this;
+
+	}
+
+	setZ( index, z ) {
+
+		if ( this.normalized ) z = normalize( z, this.array );
+
+		this.data.array[ index * this.data.stride + this.offset + 2 ] = z;
+
+		return this;
+
+	}
+
+	setW( index, w ) {
+
+		if ( this.normalized ) w = normalize( w, this.array );
+
+		this.data.array[ index * this.data.stride + this.offset + 3 ] = w;
+
+		return this;
+
+	}
+
+	getX( index ) {
+
+		let x = this.data.array[ index * this.data.stride + this.offset ];
+
+		if ( this.normalized ) x = denormalize( x, this.array );
+
+		return x;
+
+	}
+
+	getY( index ) {
+
+		let y = this.data.array[ index * this.data.stride + this.offset + 1 ];
+
+		if ( this.normalized ) y = denormalize( y, this.array );
+
+		return y;
+
+	}
+
+	getZ( index ) {
+
+		let z = this.data.array[ index * this.data.stride + this.offset + 2 ];
+
+		if ( this.normalized ) z = denormalize( z, this.array );
+
+		return z;
+
+	}
+
+	getW( index ) {
+
+		let w = this.data.array[ index * this.data.stride + this.offset + 3 ];
+
+		if ( this.normalized ) w = denormalize( w, this.array );
+
+		return w;
+
+	}
+
+	setXY( index, x, y ) {
+
+		index = index * this.data.stride + this.offset;
+
+		if ( this.normalized ) {
+
+			x = normalize( x, this.array );
+			y = normalize( y, this.array );
+
+		}
+
+		this.data.array[ index + 0 ] = x;
+		this.data.array[ index + 1 ] = y;
+
+		return this;
+
+	}
+
+	setXYZ( index, x, y, z ) {
+
+		index = index * this.data.stride + this.offset;
+
+		if ( this.normalized ) {
+
+			x = normalize( x, this.array );
+			y = normalize( y, this.array );
+			z = normalize( z, this.array );
+
+		}
+
+		this.data.array[ index + 0 ] = x;
+		this.data.array[ index + 1 ] = y;
+		this.data.array[ index + 2 ] = z;
+
+		return this;
+
+	}
+
+	setXYZW( index, x, y, z, w ) {
+
+		index = index * this.data.stride + this.offset;
+
+		if ( this.normalized ) {
+
+			x = normalize( x, this.array );
+			y = normalize( y, this.array );
+			z = normalize( z, this.array );
+			w = normalize( w, this.array );
+
+		}
+
+		this.data.array[ index + 0 ] = x;
+		this.data.array[ index + 1 ] = y;
+		this.data.array[ index + 2 ] = z;
+		this.data.array[ index + 3 ] = w;
+
+		return this;
+
+	}
+
+	clone( data ) {
+
+		if ( data === undefined ) {
+
+			console.log( 'THREE.InterleavedBufferAttribute.clone(): Cloning an interleaved buffer attribute will de-interleave buffer data.' );
+
+			const array = [];
+
+			for ( let i = 0; i < this.count; i ++ ) {
+
+				const index = i * this.data.stride + this.offset;
+
+				for ( let j = 0; j < this.itemSize; j ++ ) {
+
+					array.push( this.data.array[ index + j ] );
+
+				}
+
+			}
+
+			return new BufferAttribute( new this.array.constructor( array ), this.itemSize, this.normalized );
+
+		} else {
+
+			if ( data.interleavedBuffers === undefined ) {
+
+				data.interleavedBuffers = {};
+
+			}
+
+			if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {
+
+				data.interleavedBuffers[ this.data.uuid ] = this.data.clone( data );
+
+			}
+
+			return new InterleavedBufferAttribute( data.interleavedBuffers[ this.data.uuid ], this.itemSize, this.offset, this.normalized );
+
+		}
+
+	}
+
+	toJSON( data ) {
+
+		if ( data === undefined ) {
+
+			console.log( 'THREE.InterleavedBufferAttribute.toJSON(): Serializing an interleaved buffer attribute will de-interleave buffer data.' );
+
+			const array = [];
+
+			for ( let i = 0; i < this.count; i ++ ) {
+
+				const index = i * this.data.stride + this.offset;
+
+				for ( let j = 0; j < this.itemSize; j ++ ) {
+
+					array.push( this.data.array[ index + j ] );
+
+				}
+
+			}
+
+			// de-interleave data and save it as an ordinary buffer attribute for now
+
+			return {
+				itemSize: this.itemSize,
+				type: this.array.constructor.name,
+				array: array,
+				normalized: this.normalized
+			};
+
+		} else {
+
+			// save as true interleaved attribute
+
+			if ( data.interleavedBuffers === undefined ) {
+
+				data.interleavedBuffers = {};
+
+			}
+
+			if ( data.interleavedBuffers[ this.data.uuid ] === undefined ) {
+
+				data.interleavedBuffers[ this.data.uuid ] = this.data.toJSON( data );
+
+			}
+
+			return {
+				isInterleavedBufferAttribute: true,
+				itemSize: this.itemSize,
+				data: this.data.uuid,
+				offset: this.offset,
+				normalized: this.normalized
+			};
+
+		}
+
+	}
+
+}
+
+class SpriteMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isSpriteMaterial = true;
+
+		this.type = 'SpriteMaterial';
+
+		this.color = new Color( 0xffffff );
+
+		this.map = null;
+
+		this.alphaMap = null;
+
+		this.rotation = 0;
+
+		this.sizeAttenuation = true;
+
+		this.transparent = true;
+
+		this.fog = true;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.color.copy( source.color );
+
+		this.map = source.map;
+
+		this.alphaMap = source.alphaMap;
+
+		this.rotation = source.rotation;
+
+		this.sizeAttenuation = source.sizeAttenuation;
+
+		this.fog = source.fog;
+
+		return this;
+
+	}
+
+}
+
+let _geometry;
+
+const _intersectPoint = /*@__PURE__*/ new Vector3();
+const _worldScale = /*@__PURE__*/ new Vector3();
+const _mvPosition = /*@__PURE__*/ new Vector3();
+
+const _alignedPosition = /*@__PURE__*/ new Vector2();
+const _rotatedPosition = /*@__PURE__*/ new Vector2();
+const _viewWorldMatrix = /*@__PURE__*/ new Matrix4();
+
+const _vA = /*@__PURE__*/ new Vector3();
+const _vB = /*@__PURE__*/ new Vector3();
+const _vC = /*@__PURE__*/ new Vector3();
+
+const _uvA = /*@__PURE__*/ new Vector2();
+const _uvB = /*@__PURE__*/ new Vector2();
+const _uvC = /*@__PURE__*/ new Vector2();
+
+class Sprite extends Object3D {
+
+	constructor( material = new SpriteMaterial() ) {
+
+		super();
+
+		this.isSprite = true;
+
+		this.type = 'Sprite';
+
+		if ( _geometry === undefined ) {
+
+			_geometry = new BufferGeometry();
+
+			const float32Array = new Float32Array( [
+				- 0.5, - 0.5, 0, 0, 0,
+				0.5, - 0.5, 0, 1, 0,
+				0.5, 0.5, 0, 1, 1,
+				- 0.5, 0.5, 0, 0, 1
+			] );
+
+			const interleavedBuffer = new InterleavedBuffer( float32Array, 5 );
+
+			_geometry.setIndex( [ 0, 1, 2,	0, 2, 3 ] );
+			_geometry.setAttribute( 'position', new InterleavedBufferAttribute( interleavedBuffer, 3, 0, false ) );
+			_geometry.setAttribute( 'uv', new InterleavedBufferAttribute( interleavedBuffer, 2, 3, false ) );
+
+		}
+
+		this.geometry = _geometry;
+		this.material = material;
+
+		this.center = new Vector2( 0.5, 0.5 );
+
+	}
+
+	raycast( raycaster, intersects ) {
+
+		if ( raycaster.camera === null ) {
+
+			console.error( 'THREE.Sprite: "Raycaster.camera" needs to be set in order to raycast against sprites.' );
+
+		}
+
+		_worldScale.setFromMatrixScale( this.matrixWorld );
+
+		_viewWorldMatrix.copy( raycaster.camera.matrixWorld );
+		this.modelViewMatrix.multiplyMatrices( raycaster.camera.matrixWorldInverse, this.matrixWorld );
+
+		_mvPosition.setFromMatrixPosition( this.modelViewMatrix );
+
+		if ( raycaster.camera.isPerspectiveCamera && this.material.sizeAttenuation === false ) {
+
+			_worldScale.multiplyScalar( - _mvPosition.z );
+
+		}
+
+		const rotation = this.material.rotation;
+		let sin, cos;
+
+		if ( rotation !== 0 ) {
+
+			cos = Math.cos( rotation );
+			sin = Math.sin( rotation );
+
+		}
+
+		const center = this.center;
+
+		transformVertex( _vA.set( - 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
+		transformVertex( _vB.set( 0.5, - 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
+		transformVertex( _vC.set( 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
+
+		_uvA.set( 0, 0 );
+		_uvB.set( 1, 0 );
+		_uvC.set( 1, 1 );
+
+		// check first triangle
+		let intersect = raycaster.ray.intersectTriangle( _vA, _vB, _vC, false, _intersectPoint );
+
+		if ( intersect === null ) {
+
+			// check second triangle
+			transformVertex( _vB.set( - 0.5, 0.5, 0 ), _mvPosition, center, _worldScale, sin, cos );
+			_uvB.set( 0, 1 );
+
+			intersect = raycaster.ray.intersectTriangle( _vA, _vC, _vB, false, _intersectPoint );
+			if ( intersect === null ) {
+
+				return;
+
+			}
+
+		}
+
+		const distance = raycaster.ray.origin.distanceTo( _intersectPoint );
+
+		if ( distance < raycaster.near || distance > raycaster.far ) return;
+
+		intersects.push( {
+
+			distance: distance,
+			point: _intersectPoint.clone(),
+			uv: Triangle.getInterpolation( _intersectPoint, _vA, _vB, _vC, _uvA, _uvB, _uvC, new Vector2() ),
+			face: null,
+			object: this
+
+		} );
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		if ( source.center !== undefined ) this.center.copy( source.center );
+
+		this.material = source.material;
+
+		return this;
+
+	}
+
+}
+
+function transformVertex( vertexPosition, mvPosition, center, scale, sin, cos ) {
+
+	// compute position in camera space
+	_alignedPosition.subVectors( vertexPosition, center ).addScalar( 0.5 ).multiply( scale );
+
+	// to check if rotation is not zero
+	if ( sin !== undefined ) {
+
+		_rotatedPosition.x = ( cos * _alignedPosition.x ) - ( sin * _alignedPosition.y );
+		_rotatedPosition.y = ( sin * _alignedPosition.x ) + ( cos * _alignedPosition.y );
+
+	} else {
+
+		_rotatedPosition.copy( _alignedPosition );
+
+	}
+
+
+	vertexPosition.copy( mvPosition );
+	vertexPosition.x += _rotatedPosition.x;
+	vertexPosition.y += _rotatedPosition.y;
+
+	// transform to world space
+	vertexPosition.applyMatrix4( _viewWorldMatrix );
+
+}
+
+const _v1$2 = /*@__PURE__*/ new Vector3();
+const _v2$1 = /*@__PURE__*/ new Vector3();
+
+class LOD extends Object3D {
+
+	constructor() {
+
+		super();
+
+		this._currentLevel = 0;
+
+		this.type = 'LOD';
+
+		Object.defineProperties( this, {
+			levels: {
+				enumerable: true,
+				value: []
+			},
+			isLOD: {
+				value: true,
+			}
+		} );
+
+		this.autoUpdate = true;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source, false );
+
+		const levels = source.levels;
+
+		for ( let i = 0, l = levels.length; i < l; i ++ ) {
+
+			const level = levels[ i ];
+
+			this.addLevel( level.object.clone(), level.distance, level.hysteresis );
+
+		}
+
+		this.autoUpdate = source.autoUpdate;
+
+		return this;
+
+	}
+
+	addLevel( object, distance = 0, hysteresis = 0 ) {
+
+		distance = Math.abs( distance );
+
+		const levels = this.levels;
+
+		let l;
+
+		for ( l = 0; l < levels.length; l ++ ) {
+
+			if ( distance < levels[ l ].distance ) {
+
+				break;
+
+			}
+
+		}
+
+		levels.splice( l, 0, { distance: distance, hysteresis: hysteresis, object: object } );
+
+		this.add( object );
+
+		return this;
+
+	}
+
+	getCurrentLevel() {
+
+		return this._currentLevel;
+
+	}
+
+
+
+	getObjectForDistance( distance ) {
+
+		const levels = this.levels;
+
+		if ( levels.length > 0 ) {
+
+			let i, l;
+
+			for ( i = 1, l = levels.length; i < l; i ++ ) {
+
+				let levelDistance = levels[ i ].distance;
+
+				if ( levels[ i ].object.visible ) {
+
+					levelDistance -= levelDistance * levels[ i ].hysteresis;
+
+				}
+
+				if ( distance < levelDistance ) {
+
+					break;
+
+				}
+
+			}
+
+			return levels[ i - 1 ].object;
+
+		}
+
+		return null;
+
+	}
+
+	raycast( raycaster, intersects ) {
+
+		const levels = this.levels;
+
+		if ( levels.length > 0 ) {
+
+			_v1$2.setFromMatrixPosition( this.matrixWorld );
+
+			const distance = raycaster.ray.origin.distanceTo( _v1$2 );
+
+			this.getObjectForDistance( distance ).raycast( raycaster, intersects );
+
+		}
+
+	}
+
+	update( camera ) {
+
+		const levels = this.levels;
+
+		if ( levels.length > 1 ) {
+
+			_v1$2.setFromMatrixPosition( camera.matrixWorld );
+			_v2$1.setFromMatrixPosition( this.matrixWorld );
+
+			const distance = _v1$2.distanceTo( _v2$1 ) / camera.zoom;
+
+			levels[ 0 ].object.visible = true;
+
+			let i, l;
+
+			for ( i = 1, l = levels.length; i < l; i ++ ) {
+
+				let levelDistance = levels[ i ].distance;
+
+				if ( levels[ i ].object.visible ) {
+
+					levelDistance -= levelDistance * levels[ i ].hysteresis;
+
+				}
+
+				if ( distance >= levelDistance ) {
+
+					levels[ i - 1 ].object.visible = false;
+					levels[ i ].object.visible = true;
+
+				} else {
+
+					break;
+
+				}
+
+			}
+
+			this._currentLevel = i - 1;
+
+			for ( ; i < l; i ++ ) {
+
+				levels[ i ].object.visible = false;
+
+			}
+
+		}
+
+	}
+
+	toJSON( meta ) {
+
+		const data = super.toJSON( meta );
+
+		if ( this.autoUpdate === false ) data.object.autoUpdate = false;
+
+		data.object.levels = [];
+
+		const levels = this.levels;
+
+		for ( let i = 0, l = levels.length; i < l; i ++ ) {
+
+			const level = levels[ i ];
+
+			data.object.levels.push( {
+				object: level.object.uuid,
+				distance: level.distance,
+				hysteresis: level.hysteresis
+			} );
+
+		}
+
+		return data;
+
+	}
+
+}
+
+const _basePosition = /*@__PURE__*/ new Vector3();
+
+const _skinIndex = /*@__PURE__*/ new Vector4();
+const _skinWeight = /*@__PURE__*/ new Vector4();
+
+const _vector3 = /*@__PURE__*/ new Vector3();
+const _matrix4 = /*@__PURE__*/ new Matrix4();
+const _vertex = /*@__PURE__*/ new Vector3();
+
+const _sphere$4 = /*@__PURE__*/ new Sphere();
+const _inverseMatrix$2 = /*@__PURE__*/ new Matrix4();
+const _ray$2 = /*@__PURE__*/ new Ray();
+
+class SkinnedMesh extends Mesh {
+
+	constructor( geometry, material ) {
+
+		super( geometry, material );
+
+		this.isSkinnedMesh = true;
+
+		this.type = 'SkinnedMesh';
+
+		this.bindMode = AttachedBindMode;
+		this.bindMatrix = new Matrix4();
+		this.bindMatrixInverse = new Matrix4();
+
+		this.boundingBox = null;
+		this.boundingSphere = null;
+
+	}
+
+	computeBoundingBox() {
+
+		const geometry = this.geometry;
+
+		if ( this.boundingBox === null ) {
+
+			this.boundingBox = new Box3();
+
+		}
+
+		this.boundingBox.makeEmpty();
+
+		const positionAttribute = geometry.getAttribute( 'position' );
+
+		for ( let i = 0; i < positionAttribute.count; i ++ ) {
+
+			this.getVertexPosition( i, _vertex );
+			this.boundingBox.expandByPoint( _vertex );
+
+		}
+
+	}
+
+	computeBoundingSphere() {
+
+		const geometry = this.geometry;
+
+		if ( this.boundingSphere === null ) {
+
+			this.boundingSphere = new Sphere();
+
+		}
+
+		this.boundingSphere.makeEmpty();
+
+		const positionAttribute = geometry.getAttribute( 'position' );
+
+		for ( let i = 0; i < positionAttribute.count; i ++ ) {
+
+			this.getVertexPosition( i, _vertex );
+			this.boundingSphere.expandByPoint( _vertex );
+
+		}
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.bindMode = source.bindMode;
+		this.bindMatrix.copy( source.bindMatrix );
+		this.bindMatrixInverse.copy( source.bindMatrixInverse );
+
+		this.skeleton = source.skeleton;
+
+		if ( source.boundingBox !== null ) this.boundingBox = source.boundingBox.clone();
+		if ( source.boundingSphere !== null ) this.boundingSphere = source.boundingSphere.clone();
+
+		return this;
+
+	}
+
+	raycast( raycaster, intersects ) {
+
+		const material = this.material;
+		const matrixWorld = this.matrixWorld;
+
+		if ( material === undefined ) return;
+
+		// test with bounding sphere in world space
+
+		if ( this.boundingSphere === null ) this.computeBoundingSphere();
+
+		_sphere$4.copy( this.boundingSphere );
+		_sphere$4.applyMatrix4( matrixWorld );
+
+		if ( raycaster.ray.intersectsSphere( _sphere$4 ) === false ) return;
+
+		// convert ray to local space of skinned mesh
+
+		_inverseMatrix$2.copy( matrixWorld ).invert();
+		_ray$2.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$2 );
+
+		// test with bounding box in local space
+
+		if ( this.boundingBox !== null ) {
+
+			if ( _ray$2.intersectsBox( this.boundingBox ) === false ) return;
+
+		}
+
+		// test for intersections with geometry
+
+		this._computeIntersections( raycaster, intersects, _ray$2 );
+
+	}
+
+	getVertexPosition( index, target ) {
+
+		super.getVertexPosition( index, target );
+
+		this.applyBoneTransform( index, target );
+
+		return target;
+
+	}
+
+	bind( skeleton, bindMatrix ) {
+
+		this.skeleton = skeleton;
+
+		if ( bindMatrix === undefined ) {
+
+			this.updateMatrixWorld( true );
+
+			this.skeleton.calculateInverses();
+
+			bindMatrix = this.matrixWorld;
+
+		}
+
+		this.bindMatrix.copy( bindMatrix );
+		this.bindMatrixInverse.copy( bindMatrix ).invert();
+
+	}
+
+	pose() {
+
+		this.skeleton.pose();
+
+	}
+
+	normalizeSkinWeights() {
+
+		const vector = new Vector4();
+
+		const skinWeight = this.geometry.attributes.skinWeight;
+
+		for ( let i = 0, l = skinWeight.count; i < l; i ++ ) {
+
+			vector.fromBufferAttribute( skinWeight, i );
+
+			const scale = 1.0 / vector.manhattanLength();
+
+			if ( scale !== Infinity ) {
+
+				vector.multiplyScalar( scale );
+
+			} else {
+
+				vector.set( 1, 0, 0, 0 ); // do something reasonable
+
+			}
+
+			skinWeight.setXYZW( i, vector.x, vector.y, vector.z, vector.w );
+
+		}
+
+	}
+
+	updateMatrixWorld( force ) {
+
+		super.updateMatrixWorld( force );
+
+		if ( this.bindMode === AttachedBindMode ) {
+
+			this.bindMatrixInverse.copy( this.matrixWorld ).invert();
+
+		} else if ( this.bindMode === DetachedBindMode ) {
+
+			this.bindMatrixInverse.copy( this.bindMatrix ).invert();
+
+		} else {
+
+			console.warn( 'THREE.SkinnedMesh: Unrecognized bindMode: ' + this.bindMode );
+
+		}
+
+	}
+
+	applyBoneTransform( index, vector ) {
+
+		const skeleton = this.skeleton;
+		const geometry = this.geometry;
+
+		_skinIndex.fromBufferAttribute( geometry.attributes.skinIndex, index );
+		_skinWeight.fromBufferAttribute( geometry.attributes.skinWeight, index );
+
+		_basePosition.copy( vector ).applyMatrix4( this.bindMatrix );
+
+		vector.set( 0, 0, 0 );
+
+		for ( let i = 0; i < 4; i ++ ) {
+
+			const weight = _skinWeight.getComponent( i );
+
+			if ( weight !== 0 ) {
+
+				const boneIndex = _skinIndex.getComponent( i );
+
+				_matrix4.multiplyMatrices( skeleton.bones[ boneIndex ].matrixWorld, skeleton.boneInverses[ boneIndex ] );
+
+				vector.addScaledVector( _vector3.copy( _basePosition ).applyMatrix4( _matrix4 ), weight );
+
+			}
+
+		}
+
+		return vector.applyMatrix4( this.bindMatrixInverse );
+
+	}
+
+}
+
+class Bone extends Object3D {
+
+	constructor() {
+
+		super();
+
+		this.isBone = true;
+
+		this.type = 'Bone';
+
+	}
+
+}
+
+class DataTexture extends Texture {
+
+	constructor( data = null, width = 1, height = 1, format, type, mapping, wrapS, wrapT, magFilter = NearestFilter, minFilter = NearestFilter, anisotropy, colorSpace ) {
+
+		super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace );
+
+		this.isDataTexture = true;
+
+		this.image = { data: data, width: width, height: height };
+
+		this.generateMipmaps = false;
+		this.flipY = false;
+		this.unpackAlignment = 1;
+
+	}
+
+}
+
+const _offsetMatrix = /*@__PURE__*/ new Matrix4();
+const _identityMatrix$1 = /*@__PURE__*/ new Matrix4();
+
+class Skeleton {
+
+	constructor( bones = [], boneInverses = [] ) {
+
+		this.uuid = generateUUID();
+
+		this.bones = bones.slice( 0 );
+		this.boneInverses = boneInverses;
+		this.boneMatrices = null;
+
+		this.boneTexture = null;
+
+		this.init();
+
+	}
+
+	init() {
+
+		const bones = this.bones;
+		const boneInverses = this.boneInverses;
+
+		this.boneMatrices = new Float32Array( bones.length * 16 );
+
+		// calculate inverse bone matrices if necessary
+
+		if ( boneInverses.length === 0 ) {
+
+			this.calculateInverses();
+
+		} else {
+
+			// handle special case
+
+			if ( bones.length !== boneInverses.length ) {
+
+				console.warn( 'THREE.Skeleton: Number of inverse bone matrices does not match amount of bones.' );
+
+				this.boneInverses = [];
+
+				for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
+
+					this.boneInverses.push( new Matrix4() );
+
+				}
+
+			}
+
+		}
+
+	}
+
+	calculateInverses() {
+
+		this.boneInverses.length = 0;
+
+		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
+
+			const inverse = new Matrix4();
+
+			if ( this.bones[ i ] ) {
+
+				inverse.copy( this.bones[ i ].matrixWorld ).invert();
+
+			}
+
+			this.boneInverses.push( inverse );
+
+		}
+
+	}
+
+	pose() {
+
+		// recover the bind-time world matrices
+
+		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
+
+			const bone = this.bones[ i ];
+
+			if ( bone ) {
+
+				bone.matrixWorld.copy( this.boneInverses[ i ] ).invert();
+
+			}
+
+		}
+
+		// compute the local matrices, positions, rotations and scales
+
+		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
+
+			const bone = this.bones[ i ];
+
+			if ( bone ) {
+
+				if ( bone.parent && bone.parent.isBone ) {
+
+					bone.matrix.copy( bone.parent.matrixWorld ).invert();
+					bone.matrix.multiply( bone.matrixWorld );
+
+				} else {
+
+					bone.matrix.copy( bone.matrixWorld );
+
+				}
+
+				bone.matrix.decompose( bone.position, bone.quaternion, bone.scale );
+
+			}
+
+		}
+
+	}
+
+	update() {
+
+		const bones = this.bones;
+		const boneInverses = this.boneInverses;
+		const boneMatrices = this.boneMatrices;
+		const boneTexture = this.boneTexture;
+
+		// flatten bone matrices to array
+
+		for ( let i = 0, il = bones.length; i < il; i ++ ) {
+
+			// compute the offset between the current and the original transform
+
+			const matrix = bones[ i ] ? bones[ i ].matrixWorld : _identityMatrix$1;
+
+			_offsetMatrix.multiplyMatrices( matrix, boneInverses[ i ] );
+			_offsetMatrix.toArray( boneMatrices, i * 16 );
+
+		}
+
+		if ( boneTexture !== null ) {
+
+			boneTexture.needsUpdate = true;
+
+		}
+
+	}
+
+	clone() {
+
+		return new Skeleton( this.bones, this.boneInverses );
+
+	}
+
+	computeBoneTexture() {
+
+		// layout (1 matrix = 4 pixels)
+		//      RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
+		//  with  8x8  pixel texture max   16 bones * 4 pixels =  (8 * 8)
+		//       16x16 pixel texture max   64 bones * 4 pixels = (16 * 16)
+		//       32x32 pixel texture max  256 bones * 4 pixels = (32 * 32)
+		//       64x64 pixel texture max 1024 bones * 4 pixels = (64 * 64)
+
+		let size = Math.sqrt( this.bones.length * 4 ); // 4 pixels needed for 1 matrix
+		size = Math.ceil( size / 4 ) * 4;
+		size = Math.max( size, 4 );
+
+		const boneMatrices = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel
+		boneMatrices.set( this.boneMatrices ); // copy current values
+
+		const boneTexture = new DataTexture( boneMatrices, size, size, RGBAFormat, FloatType );
+		boneTexture.needsUpdate = true;
+
+		this.boneMatrices = boneMatrices;
+		this.boneTexture = boneTexture;
+
+		return this;
+
+	}
+
+	getBoneByName( name ) {
+
+		for ( let i = 0, il = this.bones.length; i < il; i ++ ) {
+
+			const bone = this.bones[ i ];
+
+			if ( bone.name === name ) {
+
+				return bone;
+
+			}
+
+		}
+
+		return undefined;
+
+	}
+
+	dispose( ) {
+
+		if ( this.boneTexture !== null ) {
+
+			this.boneTexture.dispose();
+
+			this.boneTexture = null;
+
+		}
+
+	}
+
+	fromJSON( json, bones ) {
+
+		this.uuid = json.uuid;
+
+		for ( let i = 0, l = json.bones.length; i < l; i ++ ) {
+
+			const uuid = json.bones[ i ];
+			let bone = bones[ uuid ];
+
+			if ( bone === undefined ) {
+
+				console.warn( 'THREE.Skeleton: No bone found with UUID:', uuid );
+				bone = new Bone();
+
+			}
+
+			this.bones.push( bone );
+			this.boneInverses.push( new Matrix4().fromArray( json.boneInverses[ i ] ) );
+
+		}
+
+		this.init();
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = {
+			metadata: {
+				version: 4.6,
+				type: 'Skeleton',
+				generator: 'Skeleton.toJSON'
+			},
+			bones: [],
+			boneInverses: []
+		};
+
+		data.uuid = this.uuid;
+
+		const bones = this.bones;
+		const boneInverses = this.boneInverses;
+
+		for ( let i = 0, l = bones.length; i < l; i ++ ) {
+
+			const bone = bones[ i ];
+			data.bones.push( bone.uuid );
+
+			const boneInverse = boneInverses[ i ];
+			data.boneInverses.push( boneInverse.toArray() );
+
+		}
+
+		return data;
+
+	}
+
+}
+
+class InstancedBufferAttribute extends BufferAttribute {
+
+	constructor( array, itemSize, normalized, meshPerAttribute = 1 ) {
+
+		super( array, itemSize, normalized );
+
+		this.isInstancedBufferAttribute = true;
+
+		this.meshPerAttribute = meshPerAttribute;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.meshPerAttribute = source.meshPerAttribute;
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.meshPerAttribute = this.meshPerAttribute;
+
+		data.isInstancedBufferAttribute = true;
+
+		return data;
+
+	}
+
+}
+
+const _instanceLocalMatrix = /*@__PURE__*/ new Matrix4();
+const _instanceWorldMatrix = /*@__PURE__*/ new Matrix4();
+
+const _instanceIntersects = [];
+
+const _box3 = /*@__PURE__*/ new Box3();
+const _identity = /*@__PURE__*/ new Matrix4();
+const _mesh$1 = /*@__PURE__*/ new Mesh();
+const _sphere$3 = /*@__PURE__*/ new Sphere();
+
+class InstancedMesh extends Mesh {
+
+	constructor( geometry, material, count ) {
+
+		super( geometry, material );
+
+		this.isInstancedMesh = true;
+
+		this.instanceMatrix = new InstancedBufferAttribute( new Float32Array( count * 16 ), 16 );
+		this.instanceColor = null;
+		this.morphTexture = null;
+
+		this.count = count;
+
+		this.boundingBox = null;
+		this.boundingSphere = null;
+
+		for ( let i = 0; i < count; i ++ ) {
+
+			this.setMatrixAt( i, _identity );
+
+		}
+
+	}
+
+	computeBoundingBox() {
+
+		const geometry = this.geometry;
+		const count = this.count;
+
+		if ( this.boundingBox === null ) {
+
+			this.boundingBox = new Box3();
+
+		}
+
+		if ( geometry.boundingBox === null ) {
+
+			geometry.computeBoundingBox();
+
+		}
+
+		this.boundingBox.makeEmpty();
+
+		for ( let i = 0; i < count; i ++ ) {
+
+			this.getMatrixAt( i, _instanceLocalMatrix );
+
+			_box3.copy( geometry.boundingBox ).applyMatrix4( _instanceLocalMatrix );
+
+			this.boundingBox.union( _box3 );
+
+		}
+
+	}
+
+	computeBoundingSphere() {
+
+		const geometry = this.geometry;
+		const count = this.count;
+
+		if ( this.boundingSphere === null ) {
+
+			this.boundingSphere = new Sphere();
+
+		}
+
+		if ( geometry.boundingSphere === null ) {
+
+			geometry.computeBoundingSphere();
+
+		}
+
+		this.boundingSphere.makeEmpty();
+
+		for ( let i = 0; i < count; i ++ ) {
+
+			this.getMatrixAt( i, _instanceLocalMatrix );
+
+			_sphere$3.copy( geometry.boundingSphere ).applyMatrix4( _instanceLocalMatrix );
+
+			this.boundingSphere.union( _sphere$3 );
+
+		}
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.instanceMatrix.copy( source.instanceMatrix );
+
+		if ( source.morphTexture !== null ) this.morphTexture = source.morphTexture.clone();
+		if ( source.instanceColor !== null ) this.instanceColor = source.instanceColor.clone();
+
+		this.count = source.count;
+
+		if ( source.boundingBox !== null ) this.boundingBox = source.boundingBox.clone();
+		if ( source.boundingSphere !== null ) this.boundingSphere = source.boundingSphere.clone();
+
+		return this;
+
+	}
+
+	getColorAt( index, color ) {
+
+		color.fromArray( this.instanceColor.array, index * 3 );
+
+	}
+
+	getMatrixAt( index, matrix ) {
+
+		matrix.fromArray( this.instanceMatrix.array, index * 16 );
+
+	}
+
+	getMorphAt( index, object ) {
+
+		const objectInfluences = object.morphTargetInfluences;
+
+		const array = this.morphTexture.source.data.data;
+
+		const len = objectInfluences.length + 1; // All influences + the baseInfluenceSum
+
+		const dataIndex = index * len + 1; // Skip the baseInfluenceSum at the beginning
+
+		for ( let i = 0; i < objectInfluences.length; i ++ ) {
+
+			objectInfluences[ i ] = array[ dataIndex + i ];
+
+		}
+
+	}
+
+	raycast( raycaster, intersects ) {
+
+		const matrixWorld = this.matrixWorld;
+		const raycastTimes = this.count;
+
+		_mesh$1.geometry = this.geometry;
+		_mesh$1.material = this.material;
+
+		if ( _mesh$1.material === undefined ) return;
+
+		// test with bounding sphere first
+
+		if ( this.boundingSphere === null ) this.computeBoundingSphere();
+
+		_sphere$3.copy( this.boundingSphere );
+		_sphere$3.applyMatrix4( matrixWorld );
+
+		if ( raycaster.ray.intersectsSphere( _sphere$3 ) === false ) return;
+
+		// now test each instance
+
+		for ( let instanceId = 0; instanceId < raycastTimes; instanceId ++ ) {
+
+			// calculate the world matrix for each instance
+
+			this.getMatrixAt( instanceId, _instanceLocalMatrix );
+
+			_instanceWorldMatrix.multiplyMatrices( matrixWorld, _instanceLocalMatrix );
+
+			// the mesh represents this single instance
+
+			_mesh$1.matrixWorld = _instanceWorldMatrix;
+
+			_mesh$1.raycast( raycaster, _instanceIntersects );
+
+			// process the result of raycast
+
+			for ( let i = 0, l = _instanceIntersects.length; i < l; i ++ ) {
+
+				const intersect = _instanceIntersects[ i ];
+				intersect.instanceId = instanceId;
+				intersect.object = this;
+				intersects.push( intersect );
+
+			}
+
+			_instanceIntersects.length = 0;
+
+		}
+
+	}
+
+	setColorAt( index, color ) {
+
+		if ( this.instanceColor === null ) {
+
+			this.instanceColor = new InstancedBufferAttribute( new Float32Array( this.instanceMatrix.count * 3 ).fill( 1 ), 3 );
+
+		}
+
+		color.toArray( this.instanceColor.array, index * 3 );
+
+	}
+
+	setMatrixAt( index, matrix ) {
+
+		matrix.toArray( this.instanceMatrix.array, index * 16 );
+
+	}
+
+	setMorphAt( index, object ) {
+
+		const objectInfluences = object.morphTargetInfluences;
+
+		const len = objectInfluences.length + 1; // morphBaseInfluence + all influences
+
+		if ( this.morphTexture === null ) {
+
+			this.morphTexture = new DataTexture( new Float32Array( len * this.count ), len, this.count, RedFormat, FloatType );
+
+		}
+
+		const array = this.morphTexture.source.data.data;
+
+		let morphInfluencesSum = 0;
+
+		for ( let i = 0; i < objectInfluences.length; i ++ ) {
+
+			morphInfluencesSum += objectInfluences[ i ];
+
+		}
+
+		const morphBaseInfluence = this.geometry.morphTargetsRelative ? 1 : 1 - morphInfluencesSum;
+
+		const dataIndex = len * index;
+
+		array[ dataIndex ] = morphBaseInfluence;
+
+		array.set( objectInfluences, dataIndex + 1 );
+
+	}
+
+	updateMorphTargets() {
+
+	}
+
+	dispose() {
+
+		this.dispatchEvent( { type: 'dispose' } );
+
+		if ( this.morphTexture !== null ) {
+
+			this.morphTexture.dispose();
+			this.morphTexture = null;
+
+		}
+
+		return this;
+
+	}
+
+}
+
+function sortOpaque( a, b ) {
+
+	return a.z - b.z;
+
+}
+
+function sortTransparent( a, b ) {
+
+	return b.z - a.z;
+
+}
+
+class MultiDrawRenderList {
+
+	constructor() {
+
+		this.index = 0;
+		this.pool = [];
+		this.list = [];
+
+	}
+
+	push( drawRange, z, index ) {
+
+		const pool = this.pool;
+		const list = this.list;
+		if ( this.index >= pool.length ) {
+
+			pool.push( {
+
+				start: - 1,
+				count: - 1,
+				z: - 1,
+				index: - 1,
+
+			} );
+
+		}
+
+		const item = pool[ this.index ];
+		list.push( item );
+		this.index ++;
+
+		item.start = drawRange.start;
+		item.count = drawRange.count;
+		item.z = z;
+		item.index = index;
+
+	}
+
+	reset() {
+
+		this.list.length = 0;
+		this.index = 0;
+
+	}
+
+}
+
+const _matrix$1 = /*@__PURE__*/ new Matrix4();
+const _invMatrixWorld = /*@__PURE__*/ new Matrix4();
+const _identityMatrix = /*@__PURE__*/ new Matrix4();
+const _whiteColor = /*@__PURE__*/ new Color( 1, 1, 1 );
+const _projScreenMatrix$2 = /*@__PURE__*/ new Matrix4();
+const _frustum = /*@__PURE__*/ new Frustum();
+const _box$1 = /*@__PURE__*/ new Box3();
+const _sphere$2 = /*@__PURE__*/ new Sphere();
+const _vector$5 = /*@__PURE__*/ new Vector3();
+const _forward = /*@__PURE__*/ new Vector3();
+const _temp = /*@__PURE__*/ new Vector3();
+const _renderList = /*@__PURE__*/ new MultiDrawRenderList();
+const _mesh = /*@__PURE__*/ new Mesh();
+const _batchIntersects = [];
+
+// @TODO: SkinnedMesh support?
+// @TODO: geometry.groups support?
+// @TODO: geometry.drawRange support?
+// @TODO: geometry.morphAttributes support?
+// @TODO: Support uniform parameter per geometry
+// @TODO: Add an "optimize" function to pack geometry and remove data gaps
+
+// copies data from attribute "src" into "target" starting at "targetOffset"
+function copyAttributeData( src, target, targetOffset = 0 ) {
+
+	const itemSize = target.itemSize;
+	if ( src.isInterleavedBufferAttribute || src.array.constructor !== target.array.constructor ) {
+
+		// use the component getters and setters if the array data cannot
+		// be copied directly
+		const vertexCount = src.count;
+		for ( let i = 0; i < vertexCount; i ++ ) {
+
+			for ( let c = 0; c < itemSize; c ++ ) {
+
+				target.setComponent( i + targetOffset, c, src.getComponent( i, c ) );
+
+			}
+
+		}
+
+	} else {
+
+		// faster copy approach using typed array set function
+		target.array.set( src.array, targetOffset * itemSize );
+
+	}
+
+	target.needsUpdate = true;
+
+}
+
+class BatchedMesh extends Mesh {
+
+	get maxInstanceCount() {
+
+		return this._maxInstanceCount;
+
+	}
+
+	constructor( maxInstanceCount, maxVertexCount, maxIndexCount = maxVertexCount * 2, material ) {
+
+		super( new BufferGeometry(), material );
+
+		this.isBatchedMesh = true;
+		this.perObjectFrustumCulled = true;
+		this.sortObjects = true;
+		this.boundingBox = null;
+		this.boundingSphere = null;
+		this.customSort = null;
+
+		// stores visible, active, and geometry id per object
+		this._drawInfo = [];
+
+		// geometry information
+		this._drawRanges = [];
+		this._reservedRanges = [];
+		this._bounds = [];
+
+		this._maxInstanceCount = maxInstanceCount;
+		this._maxVertexCount = maxVertexCount;
+		this._maxIndexCount = maxIndexCount;
+
+		this._geometryInitialized = false;
+		this._geometryCount = 0;
+		this._multiDrawCounts = new Int32Array( maxInstanceCount );
+		this._multiDrawStarts = new Int32Array( maxInstanceCount );
+		this._multiDrawCount = 0;
+		this._multiDrawInstances = null;
+		this._visibilityChanged = true;
+
+		// Local matrix per geometry by using data texture
+		this._matricesTexture = null;
+		this._indirectTexture = null;
+		this._colorsTexture = null;
+
+		this._initMatricesTexture();
+		this._initIndirectTexture();
+
+	}
+
+	_initMatricesTexture() {
+
+		// layout (1 matrix = 4 pixels)
+		//      RGBA RGBA RGBA RGBA (=> column1, column2, column3, column4)
+		//  with  8x8  pixel texture max   16 matrices * 4 pixels =  (8 * 8)
+		//       16x16 pixel texture max   64 matrices * 4 pixels = (16 * 16)
+		//       32x32 pixel texture max  256 matrices * 4 pixels = (32 * 32)
+		//       64x64 pixel texture max 1024 matrices * 4 pixels = (64 * 64)
+
+		let size = Math.sqrt( this._maxInstanceCount * 4 ); // 4 pixels needed for 1 matrix
+		size = Math.ceil( size / 4 ) * 4;
+		size = Math.max( size, 4 );
+
+		const matricesArray = new Float32Array( size * size * 4 ); // 4 floats per RGBA pixel
+		const matricesTexture = new DataTexture( matricesArray, size, size, RGBAFormat, FloatType );
+
+		this._matricesTexture = matricesTexture;
+
+	}
+
+	_initIndirectTexture() {
+
+		let size = Math.sqrt( this._maxInstanceCount );
+		size = Math.ceil( size );
+
+		const indirectArray = new Uint32Array( size * size );
+		const indirectTexture = new DataTexture( indirectArray, size, size, RedIntegerFormat, UnsignedIntType );
+
+		this._indirectTexture = indirectTexture;
+
+	}
+
+	_initColorsTexture() {
+
+		let size = Math.sqrt( this._maxInstanceCount );
+		size = Math.ceil( size );
+
+		// 4 floats per RGBA pixel initialized to white
+		const colorsArray = new Float32Array( size * size * 4 ).fill( 1 );
+		const colorsTexture = new DataTexture( colorsArray, size, size, RGBAFormat, FloatType );
+		colorsTexture.colorSpace = ColorManagement.workingColorSpace;
+
+		this._colorsTexture = colorsTexture;
+
+	}
+
+	_initializeGeometry( reference ) {
+
+		const geometry = this.geometry;
+		const maxVertexCount = this._maxVertexCount;
+		const maxIndexCount = this._maxIndexCount;
+		if ( this._geometryInitialized === false ) {
+
+			for ( const attributeName in reference.attributes ) {
+
+				const srcAttribute = reference.getAttribute( attributeName );
+				const { array, itemSize, normalized } = srcAttribute;
+
+				const dstArray = new array.constructor( maxVertexCount * itemSize );
+				const dstAttribute = new BufferAttribute( dstArray, itemSize, normalized );
+
+				geometry.setAttribute( attributeName, dstAttribute );
+
+			}
+
+			if ( reference.getIndex() !== null ) {
+
+				// Reserve last u16 index for primitive restart.
+				const indexArray = maxVertexCount > 65535
+					? new Uint32Array( maxIndexCount )
+					: new Uint16Array( maxIndexCount );
+
+				geometry.setIndex( new BufferAttribute( indexArray, 1 ) );
+
+			}
+
+			this._geometryInitialized = true;
+
+		}
+
+	}
+
+	// Make sure the geometry is compatible with the existing combined geometry attributes
+	_validateGeometry( geometry ) {
+
+		// check to ensure the geometries are using consistent attributes and indices
+		const batchGeometry = this.geometry;
+		if ( Boolean( geometry.getIndex() ) !== Boolean( batchGeometry.getIndex() ) ) {
+
+			throw new Error( 'BatchedMesh: All geometries must consistently have "index".' );
+
+		}
+
+		for ( const attributeName in batchGeometry.attributes ) {
+
+			if ( ! geometry.hasAttribute( attributeName ) ) {
+
+				throw new Error( `BatchedMesh: Added geometry missing "${ attributeName }". All geometries must have consistent attributes.` );
+
+			}
+
+			const srcAttribute = geometry.getAttribute( attributeName );
+			const dstAttribute = batchGeometry.getAttribute( attributeName );
+			if ( srcAttribute.itemSize !== dstAttribute.itemSize || srcAttribute.normalized !== dstAttribute.normalized ) {
+
+				throw new Error( 'BatchedMesh: All attributes must have a consistent itemSize and normalized value.' );
+
+			}
+
+		}
+
+	}
+
+	setCustomSort( func ) {
+
+		this.customSort = func;
+		return this;
+
+	}
+
+	computeBoundingBox() {
+
+		if ( this.boundingBox === null ) {
+
+			this.boundingBox = new Box3();
+
+		}
+
+		const boundingBox = this.boundingBox;
+		const drawInfo = this._drawInfo;
+
+		boundingBox.makeEmpty();
+		for ( let i = 0, l = drawInfo.length; i < l; i ++ ) {
+
+			if ( drawInfo[ i ].active === false ) continue;
+
+			const geometryId = drawInfo[ i ].geometryIndex;
+			this.getMatrixAt( i, _matrix$1 );
+			this.getBoundingBoxAt( geometryId, _box$1 ).applyMatrix4( _matrix$1 );
+			boundingBox.union( _box$1 );
+
+		}
+
+	}
+
+	computeBoundingSphere() {
+
+		if ( this.boundingSphere === null ) {
+
+			this.boundingSphere = new Sphere();
+
+		}
+
+		const boundingSphere = this.boundingSphere;
+		const drawInfo = this._drawInfo;
+
+		boundingSphere.makeEmpty();
+		for ( let i = 0, l = drawInfo.length; i < l; i ++ ) {
+
+			if ( drawInfo[ i ].active === false ) continue;
+
+			const geometryId = drawInfo[ i ].geometryIndex;
+			this.getMatrixAt( i, _matrix$1 );
+			this.getBoundingSphereAt( geometryId, _sphere$2 ).applyMatrix4( _matrix$1 );
+			boundingSphere.union( _sphere$2 );
+
+		}
+
+	}
+
+	addInstance( geometryId ) {
+
+		// ensure we're not over geometry
+		if ( this._drawInfo.length >= this._maxInstanceCount ) {
+
+			throw new Error( 'BatchedMesh: Maximum item count reached.' );
+
+		}
+
+		this._drawInfo.push( {
+
+			visible: true,
+			active: true,
+			geometryIndex: geometryId,
+
+		} );
+
+		// initialize the matrix
+		const drawId = this._drawInfo.length - 1;
+		const matricesTexture = this._matricesTexture;
+		const matricesArray = matricesTexture.image.data;
+		_identityMatrix.toArray( matricesArray, drawId * 16 );
+		matricesTexture.needsUpdate = true;
+
+		const colorsTexture = this._colorsTexture;
+		if ( colorsTexture ) {
+
+			_whiteColor.toArray( colorsTexture.image.data, drawId * 4 );
+			colorsTexture.needsUpdate = true;
+
+		}
+
+		return drawId;
+
+	}
+
+	addGeometry( geometry, vertexCount = - 1, indexCount = - 1 ) {
+
+		this._initializeGeometry( geometry );
+
+		this._validateGeometry( geometry );
+
+		// ensure we're not over geometry
+		if ( this._drawInfo.length >= this._maxInstanceCount ) {
+
+			throw new Error( 'BatchedMesh: Maximum item count reached.' );
+
+		}
+
+		// get the necessary range fo the geometry
+		const reservedRange = {
+			vertexStart: - 1,
+			vertexCount: - 1,
+			indexStart: - 1,
+			indexCount: - 1,
+		};
+
+		let lastRange = null;
+		const reservedRanges = this._reservedRanges;
+		const drawRanges = this._drawRanges;
+		const bounds = this._bounds;
+		if ( this._geometryCount !== 0 ) {
+
+			lastRange = reservedRanges[ reservedRanges.length - 1 ];
+
+		}
+
+		if ( vertexCount === - 1 ) {
+
+			reservedRange.vertexCount = geometry.getAttribute( 'position' ).count;
+
+		} else {
+
+			reservedRange.vertexCount = vertexCount;
+
+		}
+
+		if ( lastRange === null ) {
+
+			reservedRange.vertexStart = 0;
+
+		} else {
+
+			reservedRange.vertexStart = lastRange.vertexStart + lastRange.vertexCount;
+
+		}
+
+		const index = geometry.getIndex();
+		const hasIndex = index !== null;
+		if ( hasIndex ) {
+
+			if ( indexCount	=== - 1 ) {
+
+				reservedRange.indexCount = index.count;
+
+			} else {
+
+				reservedRange.indexCount = indexCount;
+
+			}
+
+			if ( lastRange === null ) {
+
+				reservedRange.indexStart = 0;
+
+			} else {
+
+				reservedRange.indexStart = lastRange.indexStart + lastRange.indexCount;
+
+			}
+
+		}
+
+		if (
+			reservedRange.indexStart !== - 1 &&
+			reservedRange.indexStart + reservedRange.indexCount > this._maxIndexCount ||
+			reservedRange.vertexStart + reservedRange.vertexCount > this._maxVertexCount
+		) {
+
+			throw new Error( 'BatchedMesh: Reserved space request exceeds the maximum buffer size.' );
+
+		}
+
+		// update id
+		const geometryId = this._geometryCount;
+		this._geometryCount ++;
+
+		// add the reserved range and draw range objects
+		reservedRanges.push( reservedRange );
+		drawRanges.push( {
+			start: hasIndex ? reservedRange.indexStart : reservedRange.vertexStart,
+			count: - 1
+		} );
+		bounds.push( {
+			boxInitialized: false,
+			box: new Box3(),
+
+			sphereInitialized: false,
+			sphere: new Sphere()
+		} );
+
+		// update the geometry
+		this.setGeometryAt( geometryId, geometry );
+
+		return geometryId;
+
+	}
+
+	setGeometryAt( geometryId, geometry ) {
+
+		if ( geometryId >= this._geometryCount ) {
+
+			throw new Error( 'BatchedMesh: Maximum geometry count reached.' );
+
+		}
+
+		this._validateGeometry( geometry );
+
+		const batchGeometry = this.geometry;
+		const hasIndex = batchGeometry.getIndex() !== null;
+		const dstIndex = batchGeometry.getIndex();
+		const srcIndex = geometry.getIndex();
+		const reservedRange = this._reservedRanges[ geometryId ];
+		if (
+			hasIndex &&
+			srcIndex.count > reservedRange.indexCount ||
+			geometry.attributes.position.count > reservedRange.vertexCount
+		) {
+
+			throw new Error( 'BatchedMesh: Reserved space not large enough for provided geometry.' );
+
+		}
+
+		// copy geometry over
+		const vertexStart = reservedRange.vertexStart;
+		const vertexCount = reservedRange.vertexCount;
+		for ( const attributeName in batchGeometry.attributes ) {
+
+			// copy attribute data
+			const srcAttribute = geometry.getAttribute( attributeName );
+			const dstAttribute = batchGeometry.getAttribute( attributeName );
+			copyAttributeData( srcAttribute, dstAttribute, vertexStart );
+
+			// fill the rest in with zeroes
+			const itemSize = srcAttribute.itemSize;
+			for ( let i = srcAttribute.count, l = vertexCount; i < l; i ++ ) {
+
+				const index = vertexStart + i;
+				for ( let c = 0; c < itemSize; c ++ ) {
+
+					dstAttribute.setComponent( index, c, 0 );
+
+				}
+
+			}
+
+			dstAttribute.needsUpdate = true;
+			dstAttribute.addUpdateRange( vertexStart * itemSize, vertexCount * itemSize );
+
+		}
+
+		// copy index
+		if ( hasIndex ) {
+
+			const indexStart = reservedRange.indexStart;
+
+			// copy index data over
+			for ( let i = 0; i < srcIndex.count; i ++ ) {
+
+				dstIndex.setX( indexStart + i, vertexStart + srcIndex.getX( i ) );
+
+			}
+
+			// fill the rest in with zeroes
+			for ( let i = srcIndex.count, l = reservedRange.indexCount; i < l; i ++ ) {
+
+				dstIndex.setX( indexStart + i, vertexStart );
+
+			}
+
+			dstIndex.needsUpdate = true;
+			dstIndex.addUpdateRange( indexStart, reservedRange.indexCount );
+
+		}
+
+		// store the bounding boxes
+		const bound = this._bounds[ geometryId ];
+		if ( geometry.boundingBox !== null ) {
+
+			bound.box.copy( geometry.boundingBox );
+			bound.boxInitialized = true;
+
+		} else {
+
+			bound.boxInitialized = false;
+
+		}
+
+		if ( geometry.boundingSphere !== null ) {
+
+			bound.sphere.copy( geometry.boundingSphere );
+			bound.sphereInitialized = true;
+
+		} else {
+
+			bound.sphereInitialized = false;
+
+		}
+
+		// set drawRange count
+		const drawRange = this._drawRanges[ geometryId ];
+		const posAttr = geometry.getAttribute( 'position' );
+		drawRange.count = hasIndex ? srcIndex.count : posAttr.count;
+		this._visibilityChanged = true;
+
+		return geometryId;
+
+	}
+
+	/*
+	deleteGeometry( geometryId ) {
+
+		// TODO: delete geometry and associated instances
+
+	}
+	*/
+
+	/*
+	deleteInstance( instanceId ) {
+
+		// Note: User needs to call optimize() afterward to pack the data.
+
+		const drawInfo = this._drawInfo;
+		if ( instanceId >= drawInfo.length || drawInfo[ instanceId ].active === false ) {
+
+			return this;
+
+		}
+
+		drawInfo[ instanceId ].active = false;
+		this._visibilityChanged = true;
+
+		return this;
+
+	}
+	*/
+
+	// get bounding box and compute it if it doesn't exist
+	getBoundingBoxAt( geometryId, target ) {
+
+		if ( geometryId >= this._geometryCount ) {
+
+			return null;
+
+		}
+
+		// compute bounding box
+		const bound = this._bounds[ geometryId ];
+		const box = bound.box;
+		const geometry = this.geometry;
+		if ( bound.boxInitialized === false ) {
+
+			box.makeEmpty();
+
+			const index = geometry.index;
+			const position = geometry.attributes.position;
+			const drawRange = this._drawRanges[ geometryId ];
+			for ( let i = drawRange.start, l = drawRange.start + drawRange.count; i < l; i ++ ) {
+
+				let iv = i;
+				if ( index ) {
+
+					iv = index.getX( iv );
+
+				}
+
+				box.expandByPoint( _vector$5.fromBufferAttribute( position, iv ) );
+
+			}
+
+			bound.boxInitialized = true;
+
+		}
+
+		target.copy( box );
+		return target;
+
+	}
+
+	// get bounding sphere and compute it if it doesn't exist
+	getBoundingSphereAt( geometryId, target ) {
+
+		if ( geometryId >= this._geometryCount ) {
+
+			return null;
+
+		}
+
+		// compute bounding sphere
+		const bound = this._bounds[ geometryId ];
+		const sphere = bound.sphere;
+		const geometry = this.geometry;
+		if ( bound.sphereInitialized === false ) {
+
+			sphere.makeEmpty();
+
+			this.getBoundingBoxAt( geometryId, _box$1 );
+			_box$1.getCenter( sphere.center );
+
+			const index = geometry.index;
+			const position = geometry.attributes.position;
+			const drawRange = this._drawRanges[ geometryId ];
+
+			let maxRadiusSq = 0;
+			for ( let i = drawRange.start, l = drawRange.start + drawRange.count; i < l; i ++ ) {
+
+				let iv = i;
+				if ( index ) {
+
+					iv = index.getX( iv );
+
+				}
+
+				_vector$5.fromBufferAttribute( position, iv );
+				maxRadiusSq = Math.max( maxRadiusSq, sphere.center.distanceToSquared( _vector$5 ) );
+
+			}
+
+			sphere.radius = Math.sqrt( maxRadiusSq );
+			bound.sphereInitialized = true;
+
+		}
+
+		target.copy( sphere );
+		return target;
+
+	}
+
+	setMatrixAt( instanceId, matrix ) {
+
+		// @TODO: Map geometryId to index of the arrays because
+		//        optimize() can make geometryId mismatch the index
+
+		const drawInfo = this._drawInfo;
+		const matricesTexture = this._matricesTexture;
+		const matricesArray = this._matricesTexture.image.data;
+		if ( instanceId >= drawInfo.length || drawInfo[ instanceId ].active === false ) {
+
+			return this;
+
+		}
+
+		matrix.toArray( matricesArray, instanceId * 16 );
+		matricesTexture.needsUpdate = true;
+
+		return this;
+
+	}
+
+	getMatrixAt( instanceId, matrix ) {
+
+		const drawInfo = this._drawInfo;
+		const matricesArray = this._matricesTexture.image.data;
+		if ( instanceId >= drawInfo.length || drawInfo[ instanceId ].active === false ) {
+
+			return null;
+
+		}
+
+		return matrix.fromArray( matricesArray, instanceId * 16 );
+
+	}
+
+	setColorAt( instanceId, color ) {
+
+		if ( this._colorsTexture === null ) {
+
+			this._initColorsTexture();
+
+		}
+
+		// @TODO: Map id to index of the arrays because
+		//        optimize() can make id mismatch the index
+
+		const colorsTexture = this._colorsTexture;
+		const colorsArray = this._colorsTexture.image.data;
+		const drawInfo = this._drawInfo;
+		if ( instanceId >= drawInfo.length || drawInfo[ instanceId ].active === false ) {
+
+			return this;
+
+		}
+
+		color.toArray( colorsArray, instanceId * 4 );
+		colorsTexture.needsUpdate = true;
+
+		return this;
+
+	}
+
+	getColorAt( instanceId, color ) {
+
+		const colorsArray = this._colorsTexture.image.data;
+		const drawInfo = this._drawInfo;
+		if ( instanceId >= drawInfo.length || drawInfo[ instanceId ].active === false ) {
+
+			return null;
+
+		}
+
+		return color.fromArray( colorsArray, instanceId * 4 );
+
+	}
+
+	setVisibleAt( instanceId, value ) {
+
+		// if the geometry is out of range, not active, or visibility state
+		// does not change then return early
+		const drawInfo = this._drawInfo;
+		if (
+			instanceId >= drawInfo.length ||
+			drawInfo[ instanceId ].active === false ||
+			drawInfo[ instanceId ].visible === value
+		) {
+
+			return this;
+
+		}
+
+		drawInfo[ instanceId ].visible = value;
+		this._visibilityChanged = true;
+
+		return this;
+
+	}
+
+	getVisibleAt( instanceId ) {
+
+		// return early if the geometry is out of range or not active
+		const drawInfo = this._drawInfo;
+		if ( instanceId >= drawInfo.length || drawInfo[ instanceId ].active === false ) {
+
+			return false;
+
+		}
+
+		return drawInfo[ instanceId ].visible;
+
+	}
+
+	raycast( raycaster, intersects ) {
+
+		const drawInfo = this._drawInfo;
+		const drawRanges = this._drawRanges;
+		const matrixWorld = this.matrixWorld;
+		const batchGeometry = this.geometry;
+
+		// iterate over each geometry
+		_mesh.material = this.material;
+		_mesh.geometry.index = batchGeometry.index;
+		_mesh.geometry.attributes = batchGeometry.attributes;
+		if ( _mesh.geometry.boundingBox === null ) {
+
+			_mesh.geometry.boundingBox = new Box3();
+
+		}
+
+		if ( _mesh.geometry.boundingSphere === null ) {
+
+			_mesh.geometry.boundingSphere = new Sphere();
+
+		}
+
+		for ( let i = 0, l = drawInfo.length; i < l; i ++ ) {
+
+			if ( ! drawInfo[ i ].visible || ! drawInfo[ i ].active ) {
+
+				continue;
+
+			}
+
+			const geometryId = drawInfo[ i ].geometryIndex;
+			const drawRange = drawRanges[ geometryId ];
+			_mesh.geometry.setDrawRange( drawRange.start, drawRange.count );
+
+			// ge the intersects
+			this.getMatrixAt( i, _mesh.matrixWorld ).premultiply( matrixWorld );
+			this.getBoundingBoxAt( geometryId, _mesh.geometry.boundingBox );
+			this.getBoundingSphereAt( geometryId, _mesh.geometry.boundingSphere );
+			_mesh.raycast( raycaster, _batchIntersects );
+
+			// add batch id to the intersects
+			for ( let j = 0, l = _batchIntersects.length; j < l; j ++ ) {
+
+				const intersect = _batchIntersects[ j ];
+				intersect.object = this;
+				intersect.batchId = i;
+				intersects.push( intersect );
+
+			}
+
+			_batchIntersects.length = 0;
+
+		}
+
+		_mesh.material = null;
+		_mesh.geometry.index = null;
+		_mesh.geometry.attributes = {};
+		_mesh.geometry.setDrawRange( 0, Infinity );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.geometry = source.geometry.clone();
+		this.perObjectFrustumCulled = source.perObjectFrustumCulled;
+		this.sortObjects = source.sortObjects;
+		this.boundingBox = source.boundingBox !== null ? source.boundingBox.clone() : null;
+		this.boundingSphere = source.boundingSphere !== null ? source.boundingSphere.clone() : null;
+
+		this._drawRanges = source._drawRanges.map( range => ( { ...range } ) );
+		this._reservedRanges = source._reservedRanges.map( range => ( { ...range } ) );
+
+		this._drawInfo = source._drawInfo.map( inf => ( { ...inf } ) );
+		this._bounds = source._bounds.map( bound => ( {
+			boxInitialized: bound.boxInitialized,
+			box: bound.box.clone(),
+
+			sphereInitialized: bound.sphereInitialized,
+			sphere: bound.sphere.clone()
+		} ) );
+
+		this._maxInstanceCount = source._maxInstanceCount;
+		this._maxVertexCount = source._maxVertexCount;
+		this._maxIndexCount = source._maxIndexCount;
+
+		this._geometryInitialized = source._geometryInitialized;
+		this._geometryCount = source._geometryCount;
+		this._multiDrawCounts = source._multiDrawCounts.slice();
+		this._multiDrawStarts = source._multiDrawStarts.slice();
+
+		this._matricesTexture = source._matricesTexture.clone();
+		this._matricesTexture.image.data = this._matricesTexture.image.data.slice();
+
+		if ( this._colorsTexture !== null ) {
+
+			this._colorsTexture = source._colorsTexture.clone();
+			this._colorsTexture.image.data = this._colorsTexture.image.data.slice();
+
+		}
+
+		return this;
+
+	}
+
+	dispose() {
+
+		// Assuming the geometry is not shared with other meshes
+		this.geometry.dispose();
+
+		this._matricesTexture.dispose();
+		this._matricesTexture = null;
+
+		this._indirectTexture.dispose();
+		this._indirectTexture = null;
+
+		if ( this._colorsTexture !== null ) {
+
+			this._colorsTexture.dispose();
+			this._colorsTexture = null;
+
+		}
+
+		return this;
+
+	}
+
+	onBeforeRender( renderer, scene, camera, geometry, material/*, _group*/ ) {
+
+		// if visibility has not changed and frustum culling and object sorting is not required
+		// then skip iterating over all items
+		if ( ! this._visibilityChanged && ! this.perObjectFrustumCulled && ! this.sortObjects ) {
+
+			return;
+
+		}
+
+		// the indexed version of the multi draw function requires specifying the start
+		// offset in bytes.
+		const index = geometry.getIndex();
+		const bytesPerElement = index === null ? 1 : index.array.BYTES_PER_ELEMENT;
+
+		const drawInfo = this._drawInfo;
+		const multiDrawStarts = this._multiDrawStarts;
+		const multiDrawCounts = this._multiDrawCounts;
+		const drawRanges = this._drawRanges;
+		const perObjectFrustumCulled = this.perObjectFrustumCulled;
+		const indirectTexture = this._indirectTexture;
+		const indirectArray = indirectTexture.image.data;
+
+		// prepare the frustum in the local frame
+		if ( perObjectFrustumCulled ) {
+
+			_projScreenMatrix$2
+				.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse )
+				.multiply( this.matrixWorld );
+			_frustum.setFromProjectionMatrix(
+				_projScreenMatrix$2,
+				renderer.coordinateSystem
+			);
+
+		}
+
+		let count = 0;
+		if ( this.sortObjects ) {
+
+			// get the camera position in the local frame
+			_invMatrixWorld.copy( this.matrixWorld ).invert();
+			_vector$5.setFromMatrixPosition( camera.matrixWorld ).applyMatrix4( _invMatrixWorld );
+			_forward.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld ).transformDirection( _invMatrixWorld );
+
+			for ( let i = 0, l = drawInfo.length; i < l; i ++ ) {
+
+				if ( drawInfo[ i ].visible && drawInfo[ i ].active ) {
+
+					const geometryId = drawInfo[ i ].geometryIndex;
+
+					// get the bounds in world space
+					this.getMatrixAt( i, _matrix$1 );
+					this.getBoundingSphereAt( geometryId, _sphere$2 ).applyMatrix4( _matrix$1 );
+
+					// determine whether the batched geometry is within the frustum
+					let culled = false;
+					if ( perObjectFrustumCulled ) {
+
+						culled = ! _frustum.intersectsSphere( _sphere$2 );
+
+					}
+
+					if ( ! culled ) {
+
+						// get the distance from camera used for sorting
+						const z = _temp.subVectors( _sphere$2.center, _vector$5 ).dot( _forward );
+						_renderList.push( drawRanges[ geometryId ], z, i );
+
+					}
+
+				}
+
+			}
+
+			// Sort the draw ranges and prep for rendering
+			const list = _renderList.list;
+			const customSort = this.customSort;
+			if ( customSort === null ) {
+
+				list.sort( material.transparent ? sortTransparent : sortOpaque );
+
+			} else {
+
+				customSort.call( this, list, camera );
+
+			}
+
+			for ( let i = 0, l = list.length; i < l; i ++ ) {
+
+				const item = list[ i ];
+				multiDrawStarts[ count ] = item.start * bytesPerElement;
+				multiDrawCounts[ count ] = item.count;
+				indirectArray[ count ] = item.index;
+				count ++;
+
+			}
+
+			_renderList.reset();
+
+		} else {
+
+			for ( let i = 0, l = drawInfo.length; i < l; i ++ ) {
+
+				if ( drawInfo[ i ].visible && drawInfo[ i ].active ) {
+
+					const geometryId = drawInfo[ i ].geometryIndex;
+
+					// determine whether the batched geometry is within the frustum
+					let culled = false;
+					if ( perObjectFrustumCulled ) {
+
+						// get the bounds in world space
+						this.getMatrixAt( i, _matrix$1 );
+						this.getBoundingSphereAt( geometryId, _sphere$2 ).applyMatrix4( _matrix$1 );
+						culled = ! _frustum.intersectsSphere( _sphere$2 );
+
+					}
+
+					if ( ! culled ) {
+
+						const range = drawRanges[ geometryId ];
+						multiDrawStarts[ count ] = range.start * bytesPerElement;
+						multiDrawCounts[ count ] = range.count;
+						indirectArray[ count ] = i;
+						count ++;
+
+					}
+
+				}
+
+			}
+
+		}
+
+		indirectTexture.needsUpdate = true;
+		this._multiDrawCount = count;
+		this._visibilityChanged = false;
+
+	}
+
+	onBeforeShadow( renderer, object, camera, shadowCamera, geometry, depthMaterial/* , group */ ) {
+
+		this.onBeforeRender( renderer, null, shadowCamera, geometry, depthMaterial );
+
+	}
+
+}
+
+class LineBasicMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isLineBasicMaterial = true;
+
+		this.type = 'LineBasicMaterial';
+
+		this.color = new Color( 0xffffff );
+
+		this.map = null;
+
+		this.linewidth = 1;
+		this.linecap = 'round';
+		this.linejoin = 'round';
+
+		this.fog = true;
+
+		this.setValues( parameters );
+
+	}
+
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.color.copy( source.color );
+
+		this.map = source.map;
+
+		this.linewidth = source.linewidth;
+		this.linecap = source.linecap;
+		this.linejoin = source.linejoin;
+
+		this.fog = source.fog;
+
+		return this;
+
+	}
+
+}
+
+const _vStart = /*@__PURE__*/ new Vector3();
+const _vEnd = /*@__PURE__*/ new Vector3();
+
+const _inverseMatrix$1 = /*@__PURE__*/ new Matrix4();
+const _ray$1 = /*@__PURE__*/ new Ray();
+const _sphere$1 = /*@__PURE__*/ new Sphere();
+
+const _intersectPointOnRay = /*@__PURE__*/ new Vector3();
+const _intersectPointOnSegment = /*@__PURE__*/ new Vector3();
+
+class Line extends Object3D {
+
+	constructor( geometry = new BufferGeometry(), material = new LineBasicMaterial() ) {
+
+		super();
+
+		this.isLine = true;
+
+		this.type = 'Line';
+
+		this.geometry = geometry;
+		this.material = material;
+
+		this.updateMorphTargets();
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.material = Array.isArray( source.material ) ? source.material.slice() : source.material;
+		this.geometry = source.geometry;
+
+		return this;
+
+	}
+
+	computeLineDistances() {
+
+		const geometry = this.geometry;
+
+		// we assume non-indexed geometry
+
+		if ( geometry.index === null ) {
+
+			const positionAttribute = geometry.attributes.position;
+			const lineDistances = [ 0 ];
+
+			for ( let i = 1, l = positionAttribute.count; i < l; i ++ ) {
+
+				_vStart.fromBufferAttribute( positionAttribute, i - 1 );
+				_vEnd.fromBufferAttribute( positionAttribute, i );
+
+				lineDistances[ i ] = lineDistances[ i - 1 ];
+				lineDistances[ i ] += _vStart.distanceTo( _vEnd );
+
+			}
+
+			geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );
+
+		} else {
+
+			console.warn( 'THREE.Line.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );
+
+		}
+
+		return this;
+
+	}
+
+	raycast( raycaster, intersects ) {
+
+		const geometry = this.geometry;
+		const matrixWorld = this.matrixWorld;
+		const threshold = raycaster.params.Line.threshold;
+		const drawRange = geometry.drawRange;
+
+		// Checking boundingSphere distance to ray
+
+		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
+
+		_sphere$1.copy( geometry.boundingSphere );
+		_sphere$1.applyMatrix4( matrixWorld );
+		_sphere$1.radius += threshold;
+
+		if ( raycaster.ray.intersectsSphere( _sphere$1 ) === false ) return;
+
+		//
+
+		_inverseMatrix$1.copy( matrixWorld ).invert();
+		_ray$1.copy( raycaster.ray ).applyMatrix4( _inverseMatrix$1 );
+
+		const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
+		const localThresholdSq = localThreshold * localThreshold;
+
+		const step = this.isLineSegments ? 2 : 1;
+
+		const index = geometry.index;
+		const attributes = geometry.attributes;
+		const positionAttribute = attributes.position;
+
+		if ( index !== null ) {
+
+			const start = Math.max( 0, drawRange.start );
+			const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );
+
+			for ( let i = start, l = end - 1; i < l; i += step ) {
+
+				const a = index.getX( i );
+				const b = index.getX( i + 1 );
+
+				const intersect = checkIntersection( this, raycaster, _ray$1, localThresholdSq, a, b );
+
+				if ( intersect ) {
+
+					intersects.push( intersect );
+
+				}
+
+			}
+
+			if ( this.isLineLoop ) {
+
+				const a = index.getX( end - 1 );
+				const b = index.getX( start );
+
+				const intersect = checkIntersection( this, raycaster, _ray$1, localThresholdSq, a, b );
+
+				if ( intersect ) {
+
+					intersects.push( intersect );
+
+				}
+
+			}
+
+		} else {
+
+			const start = Math.max( 0, drawRange.start );
+			const end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );
+
+			for ( let i = start, l = end - 1; i < l; i += step ) {
+
+				const intersect = checkIntersection( this, raycaster, _ray$1, localThresholdSq, i, i + 1 );
+
+				if ( intersect ) {
+
+					intersects.push( intersect );
+
+				}
+
+			}
+
+			if ( this.isLineLoop ) {
+
+				const intersect = checkIntersection( this, raycaster, _ray$1, localThresholdSq, end - 1, start );
+
+				if ( intersect ) {
+
+					intersects.push( intersect );
+
+				}
+
+			}
+
+		}
+
+	}
+
+	updateMorphTargets() {
+
+		const geometry = this.geometry;
+
+		const morphAttributes = geometry.morphAttributes;
+		const keys = Object.keys( morphAttributes );
+
+		if ( keys.length > 0 ) {
+
+			const morphAttribute = morphAttributes[ keys[ 0 ] ];
+
+			if ( morphAttribute !== undefined ) {
+
+				this.morphTargetInfluences = [];
+				this.morphTargetDictionary = {};
+
+				for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
+
+					const name = morphAttribute[ m ].name || String( m );
+
+					this.morphTargetInfluences.push( 0 );
+					this.morphTargetDictionary[ name ] = m;
+
+				}
+
+			}
+
+		}
+
+	}
+
+}
+
+function checkIntersection( object, raycaster, ray, thresholdSq, a, b ) {
+
+	const positionAttribute = object.geometry.attributes.position;
+
+	_vStart.fromBufferAttribute( positionAttribute, a );
+	_vEnd.fromBufferAttribute( positionAttribute, b );
+
+	const distSq = ray.distanceSqToSegment( _vStart, _vEnd, _intersectPointOnRay, _intersectPointOnSegment );
+
+	if ( distSq > thresholdSq ) return;
+
+	_intersectPointOnRay.applyMatrix4( object.matrixWorld ); // Move back to world space for distance calculation
+
+	const distance = raycaster.ray.origin.distanceTo( _intersectPointOnRay );
+
+	if ( distance < raycaster.near || distance > raycaster.far ) return;
+
+	return {
+
+		distance: distance,
+		// What do we want? intersection point on the ray or on the segment??
+		// point: raycaster.ray.at( distance ),
+		point: _intersectPointOnSegment.clone().applyMatrix4( object.matrixWorld ),
+		index: a,
+		face: null,
+		faceIndex: null,
+		object: object
+
+	};
+
+}
+
+const _start = /*@__PURE__*/ new Vector3();
+const _end = /*@__PURE__*/ new Vector3();
+
+class LineSegments extends Line {
+
+	constructor( geometry, material ) {
+
+		super( geometry, material );
+
+		this.isLineSegments = true;
+
+		this.type = 'LineSegments';
+
+	}
+
+	computeLineDistances() {
+
+		const geometry = this.geometry;
+
+		// we assume non-indexed geometry
+
+		if ( geometry.index === null ) {
+
+			const positionAttribute = geometry.attributes.position;
+			const lineDistances = [];
+
+			for ( let i = 0, l = positionAttribute.count; i < l; i += 2 ) {
+
+				_start.fromBufferAttribute( positionAttribute, i );
+				_end.fromBufferAttribute( positionAttribute, i + 1 );
+
+				lineDistances[ i ] = ( i === 0 ) ? 0 : lineDistances[ i - 1 ];
+				lineDistances[ i + 1 ] = lineDistances[ i ] + _start.distanceTo( _end );
+
+			}
+
+			geometry.setAttribute( 'lineDistance', new Float32BufferAttribute( lineDistances, 1 ) );
+
+		} else {
+
+			console.warn( 'THREE.LineSegments.computeLineDistances(): Computation only possible with non-indexed BufferGeometry.' );
+
+		}
+
+		return this;
+
+	}
+
+}
+
+class LineLoop extends Line {
+
+	constructor( geometry, material ) {
+
+		super( geometry, material );
+
+		this.isLineLoop = true;
+
+		this.type = 'LineLoop';
+
+	}
+
+}
+
+class PointsMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isPointsMaterial = true;
+
+		this.type = 'PointsMaterial';
+
+		this.color = new Color( 0xffffff );
+
+		this.map = null;
+
+		this.alphaMap = null;
+
+		this.size = 1;
+		this.sizeAttenuation = true;
+
+		this.fog = true;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.color.copy( source.color );
+
+		this.map = source.map;
+
+		this.alphaMap = source.alphaMap;
+
+		this.size = source.size;
+		this.sizeAttenuation = source.sizeAttenuation;
+
+		this.fog = source.fog;
+
+		return this;
+
+	}
+
+}
+
+const _inverseMatrix = /*@__PURE__*/ new Matrix4();
+const _ray = /*@__PURE__*/ new Ray();
+const _sphere = /*@__PURE__*/ new Sphere();
+const _position$2 = /*@__PURE__*/ new Vector3();
+
+class Points extends Object3D {
+
+	constructor( geometry = new BufferGeometry(), material = new PointsMaterial() ) {
+
+		super();
+
+		this.isPoints = true;
+
+		this.type = 'Points';
+
+		this.geometry = geometry;
+		this.material = material;
+
+		this.updateMorphTargets();
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.material = Array.isArray( source.material ) ? source.material.slice() : source.material;
+		this.geometry = source.geometry;
+
+		return this;
+
+	}
+
+	raycast( raycaster, intersects ) {
+
+		const geometry = this.geometry;
+		const matrixWorld = this.matrixWorld;
+		const threshold = raycaster.params.Points.threshold;
+		const drawRange = geometry.drawRange;
+
+		// Checking boundingSphere distance to ray
+
+		if ( geometry.boundingSphere === null ) geometry.computeBoundingSphere();
+
+		_sphere.copy( geometry.boundingSphere );
+		_sphere.applyMatrix4( matrixWorld );
+		_sphere.radius += threshold;
+
+		if ( raycaster.ray.intersectsSphere( _sphere ) === false ) return;
+
+		//
+
+		_inverseMatrix.copy( matrixWorld ).invert();
+		_ray.copy( raycaster.ray ).applyMatrix4( _inverseMatrix );
+
+		const localThreshold = threshold / ( ( this.scale.x + this.scale.y + this.scale.z ) / 3 );
+		const localThresholdSq = localThreshold * localThreshold;
+
+		const index = geometry.index;
+		const attributes = geometry.attributes;
+		const positionAttribute = attributes.position;
+
+		if ( index !== null ) {
+
+			const start = Math.max( 0, drawRange.start );
+			const end = Math.min( index.count, ( drawRange.start + drawRange.count ) );
+
+			for ( let i = start, il = end; i < il; i ++ ) {
+
+				const a = index.getX( i );
+
+				_position$2.fromBufferAttribute( positionAttribute, a );
+
+				testPoint( _position$2, a, localThresholdSq, matrixWorld, raycaster, intersects, this );
+
+			}
+
+		} else {
+
+			const start = Math.max( 0, drawRange.start );
+			const end = Math.min( positionAttribute.count, ( drawRange.start + drawRange.count ) );
+
+			for ( let i = start, l = end; i < l; i ++ ) {
+
+				_position$2.fromBufferAttribute( positionAttribute, i );
+
+				testPoint( _position$2, i, localThresholdSq, matrixWorld, raycaster, intersects, this );
+
+			}
+
+		}
+
+	}
+
+	updateMorphTargets() {
+
+		const geometry = this.geometry;
+
+		const morphAttributes = geometry.morphAttributes;
+		const keys = Object.keys( morphAttributes );
+
+		if ( keys.length > 0 ) {
+
+			const morphAttribute = morphAttributes[ keys[ 0 ] ];
+
+			if ( morphAttribute !== undefined ) {
+
+				this.morphTargetInfluences = [];
+				this.morphTargetDictionary = {};
+
+				for ( let m = 0, ml = morphAttribute.length; m < ml; m ++ ) {
+
+					const name = morphAttribute[ m ].name || String( m );
+
+					this.morphTargetInfluences.push( 0 );
+					this.morphTargetDictionary[ name ] = m;
+
+				}
+
+			}
+
+		}
+
+	}
+
+}
+
+function testPoint( point, index, localThresholdSq, matrixWorld, raycaster, intersects, object ) {
+
+	const rayPointDistanceSq = _ray.distanceSqToPoint( point );
+
+	if ( rayPointDistanceSq < localThresholdSq ) {
+
+		const intersectPoint = new Vector3();
+
+		_ray.closestPointToPoint( point, intersectPoint );
+		intersectPoint.applyMatrix4( matrixWorld );
+
+		const distance = raycaster.ray.origin.distanceTo( intersectPoint );
+
+		if ( distance < raycaster.near || distance > raycaster.far ) return;
+
+		intersects.push( {
+
+			distance: distance,
+			distanceToRay: Math.sqrt( rayPointDistanceSq ),
+			point: intersectPoint,
+			index: index,
+			face: null,
+			object: object
+
+		} );
+
+	}
+
+}
+
+class VideoTexture extends Texture {
+
+	constructor( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {
+
+		super( video, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
+
+		this.isVideoTexture = true;
+
+		this.minFilter = minFilter !== undefined ? minFilter : LinearFilter;
+		this.magFilter = magFilter !== undefined ? magFilter : LinearFilter;
+
+		this.generateMipmaps = false;
+
+		const scope = this;
+
+		function updateVideo() {
+
+			scope.needsUpdate = true;
+			video.requestVideoFrameCallback( updateVideo );
+
+		}
+
+		if ( 'requestVideoFrameCallback' in video ) {
+
+			video.requestVideoFrameCallback( updateVideo );
+
+		}
+
+	}
+
+	clone() {
+
+		return new this.constructor( this.image ).copy( this );
+
+	}
+
+	update() {
+
+		const video = this.image;
+		const hasVideoFrameCallback = 'requestVideoFrameCallback' in video;
+
+		if ( hasVideoFrameCallback === false && video.readyState >= video.HAVE_CURRENT_DATA ) {
+
+			this.needsUpdate = true;
+
+		}
+
+	}
+
+}
+
+class FramebufferTexture extends Texture {
+
+	constructor( width, height ) {
+
+		super( { width, height } );
+
+		this.isFramebufferTexture = true;
+
+		this.magFilter = NearestFilter;
+		this.minFilter = NearestFilter;
+
+		this.generateMipmaps = false;
+
+		this.needsUpdate = true;
+
+	}
+
+}
+
+class CompressedTexture extends Texture {
+
+	constructor( mipmaps, width, height, format, type, mapping, wrapS, wrapT, magFilter, minFilter, anisotropy, colorSpace ) {
+
+		super( null, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy, colorSpace );
+
+		this.isCompressedTexture = true;
+
+		this.image = { width: width, height: height };
+		this.mipmaps = mipmaps;
+
+		// no flipping for cube textures
+		// (also flipping doesn't work for compressed textures )
+
+		this.flipY = false;
+
+		// can't generate mipmaps for compressed textures
+		// mips must be embedded in DDS files
+
+		this.generateMipmaps = false;
+
+	}
+
+}
+
+class CompressedArrayTexture extends CompressedTexture {
+
+	constructor( mipmaps, width, height, depth, format, type ) {
+
+		super( mipmaps, width, height, format, type );
+
+		this.isCompressedArrayTexture = true;
+		this.image.depth = depth;
+		this.wrapR = ClampToEdgeWrapping;
+
+		this.layerUpdates = new Set();
+
+	}
+
+	addLayerUpdate( layerIndex ) {
+
+		this.layerUpdates.add( layerIndex );
+
+	}
+
+	clearLayerUpdates() {
+
+		this.layerUpdates.clear();
+
+	}
+
+}
+
+class CompressedCubeTexture extends CompressedTexture {
+
+	constructor( images, format, type ) {
+
+		super( undefined, images[ 0 ].width, images[ 0 ].height, format, type, CubeReflectionMapping );
+
+		this.isCompressedCubeTexture = true;
+		this.isCubeTexture = true;
+
+		this.image = images;
+
+	}
+
+}
+
+class CanvasTexture extends Texture {
+
+	constructor( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy ) {
+
+		super( canvas, mapping, wrapS, wrapT, magFilter, minFilter, format, type, anisotropy );
+
+		this.isCanvasTexture = true;
+
+		this.needsUpdate = true;
+
+	}
+
+}
+
+/**
+ * Extensible curve object.
+ *
+ * Some common of curve methods:
+ * .getPoint( t, optionalTarget ), .getTangent( t, optionalTarget )
+ * .getPointAt( u, optionalTarget ), .getTangentAt( u, optionalTarget )
+ * .getPoints(), .getSpacedPoints()
+ * .getLength()
+ * .updateArcLengths()
+ *
+ * This following curves inherit from THREE.Curve:
+ *
+ * -- 2D curves --
+ * THREE.ArcCurve
+ * THREE.CubicBezierCurve
+ * THREE.EllipseCurve
+ * THREE.LineCurve
+ * THREE.QuadraticBezierCurve
+ * THREE.SplineCurve
+ *
+ * -- 3D curves --
+ * THREE.CatmullRomCurve3
+ * THREE.CubicBezierCurve3
+ * THREE.LineCurve3
+ * THREE.QuadraticBezierCurve3
+ *
+ * A series of curves can be represented as a THREE.CurvePath.
+ *
+ **/
+
+class Curve {
+
+	constructor() {
+
+		this.type = 'Curve';
+
+		this.arcLengthDivisions = 200;
+
+	}
+
+	// Virtual base class method to overwrite and implement in subclasses
+	//	- t [0 .. 1]
+
+	getPoint( /* t, optionalTarget */ ) {
+
+		console.warn( 'THREE.Curve: .getPoint() not implemented.' );
+		return null;
+
+	}
+
+	// Get point at relative position in curve according to arc length
+	// - u [0 .. 1]
+
+	getPointAt( u, optionalTarget ) {
+
+		const t = this.getUtoTmapping( u );
+		return this.getPoint( t, optionalTarget );
+
+	}
+
+	// Get sequence of points using getPoint( t )
+
+	getPoints( divisions = 5 ) {
+
+		const points = [];
+
+		for ( let d = 0; d <= divisions; d ++ ) {
+
+			points.push( this.getPoint( d / divisions ) );
+
+		}
+
+		return points;
+
+	}
+
+	// Get sequence of points using getPointAt( u )
+
+	getSpacedPoints( divisions = 5 ) {
+
+		const points = [];
+
+		for ( let d = 0; d <= divisions; d ++ ) {
+
+			points.push( this.getPointAt( d / divisions ) );
+
+		}
+
+		return points;
+
+	}
+
+	// Get total curve arc length
+
+	getLength() {
+
+		const lengths = this.getLengths();
+		return lengths[ lengths.length - 1 ];
+
+	}
+
+	// Get list of cumulative segment lengths
+
+	getLengths( divisions = this.arcLengthDivisions ) {
+
+		if ( this.cacheArcLengths &&
+			( this.cacheArcLengths.length === divisions + 1 ) &&
+			! this.needsUpdate ) {
+
+			return this.cacheArcLengths;
+
+		}
+
+		this.needsUpdate = false;
+
+		const cache = [];
+		let current, last = this.getPoint( 0 );
+		let sum = 0;
+
+		cache.push( 0 );
+
+		for ( let p = 1; p <= divisions; p ++ ) {
+
+			current = this.getPoint( p / divisions );
+			sum += current.distanceTo( last );
+			cache.push( sum );
+			last = current;
+
+		}
+
+		this.cacheArcLengths = cache;
+
+		return cache; // { sums: cache, sum: sum }; Sum is in the last element.
+
+	}
+
+	updateArcLengths() {
+
+		this.needsUpdate = true;
+		this.getLengths();
+
+	}
+
+	// Given u ( 0 .. 1 ), get a t to find p. This gives you points which are equidistant
+
+	getUtoTmapping( u, distance ) {
+
+		const arcLengths = this.getLengths();
+
+		let i = 0;
+		const il = arcLengths.length;
+
+		let targetArcLength; // The targeted u distance value to get
+
+		if ( distance ) {
+
+			targetArcLength = distance;
+
+		} else {
+
+			targetArcLength = u * arcLengths[ il - 1 ];
+
+		}
+
+		// binary search for the index with largest value smaller than target u distance
+
+		let low = 0, high = il - 1, comparison;
+
+		while ( low <= high ) {
+
+			i = Math.floor( low + ( high - low ) / 2 ); // less likely to overflow, though probably not issue here, JS doesn't really have integers, all numbers are floats
+
+			comparison = arcLengths[ i ] - targetArcLength;
+
+			if ( comparison < 0 ) {
+
+				low = i + 1;
+
+			} else if ( comparison > 0 ) {
+
+				high = i - 1;
+
+			} else {
+
+				high = i;
+				break;
+
+				// DONE
+
+			}
+
+		}
+
+		i = high;
+
+		if ( arcLengths[ i ] === targetArcLength ) {
+
+			return i / ( il - 1 );
+
+		}
+
+		// we could get finer grain at lengths, or use simple interpolation between two points
+
+		const lengthBefore = arcLengths[ i ];
+		const lengthAfter = arcLengths[ i + 1 ];
+
+		const segmentLength = lengthAfter - lengthBefore;
+
+		// determine where we are between the 'before' and 'after' points
+
+		const segmentFraction = ( targetArcLength - lengthBefore ) / segmentLength;
+
+		// add that fractional amount to t
+
+		const t = ( i + segmentFraction ) / ( il - 1 );
+
+		return t;
+
+	}
+
+	// Returns a unit vector tangent at t
+	// In case any sub curve does not implement its tangent derivation,
+	// 2 points a small delta apart will be used to find its gradient
+	// which seems to give a reasonable approximation
+
+	getTangent( t, optionalTarget ) {
+
+		const delta = 0.0001;
+		let t1 = t - delta;
+		let t2 = t + delta;
+
+		// Capping in case of danger
+
+		if ( t1 < 0 ) t1 = 0;
+		if ( t2 > 1 ) t2 = 1;
+
+		const pt1 = this.getPoint( t1 );
+		const pt2 = this.getPoint( t2 );
+
+		const tangent = optionalTarget || ( ( pt1.isVector2 ) ? new Vector2() : new Vector3() );
+
+		tangent.copy( pt2 ).sub( pt1 ).normalize();
+
+		return tangent;
+
+	}
+
+	getTangentAt( u, optionalTarget ) {
+
+		const t = this.getUtoTmapping( u );
+		return this.getTangent( t, optionalTarget );
+
+	}
+
+	computeFrenetFrames( segments, closed ) {
+
+		// see http://www.cs.indiana.edu/pub/techreports/TR425.pdf
+
+		const normal = new Vector3();
+
+		const tangents = [];
+		const normals = [];
+		const binormals = [];
+
+		const vec = new Vector3();
+		const mat = new Matrix4();
+
+		// compute the tangent vectors for each segment on the curve
+
+		for ( let i = 0; i <= segments; i ++ ) {
+
+			const u = i / segments;
+
+			tangents[ i ] = this.getTangentAt( u, new Vector3() );
+
+		}
+
+		// select an initial normal vector perpendicular to the first tangent vector,
+		// and in the direction of the minimum tangent xyz component
+
+		normals[ 0 ] = new Vector3();
+		binormals[ 0 ] = new Vector3();
+		let min = Number.MAX_VALUE;
+		const tx = Math.abs( tangents[ 0 ].x );
+		const ty = Math.abs( tangents[ 0 ].y );
+		const tz = Math.abs( tangents[ 0 ].z );
+
+		if ( tx <= min ) {
+
+			min = tx;
+			normal.set( 1, 0, 0 );
+
+		}
+
+		if ( ty <= min ) {
+
+			min = ty;
+			normal.set( 0, 1, 0 );
+
+		}
+
+		if ( tz <= min ) {
+
+			normal.set( 0, 0, 1 );
+
+		}
+
+		vec.crossVectors( tangents[ 0 ], normal ).normalize();
+
+		normals[ 0 ].crossVectors( tangents[ 0 ], vec );
+		binormals[ 0 ].crossVectors( tangents[ 0 ], normals[ 0 ] );
+
+
+		// compute the slowly-varying normal and binormal vectors for each segment on the curve
+
+		for ( let i = 1; i <= segments; i ++ ) {
+
+			normals[ i ] = normals[ i - 1 ].clone();
+
+			binormals[ i ] = binormals[ i - 1 ].clone();
+
+			vec.crossVectors( tangents[ i - 1 ], tangents[ i ] );
+
+			if ( vec.length() > Number.EPSILON ) {
+
+				vec.normalize();
+
+				const theta = Math.acos( clamp( tangents[ i - 1 ].dot( tangents[ i ] ), - 1, 1 ) ); // clamp for floating pt errors
+
+				normals[ i ].applyMatrix4( mat.makeRotationAxis( vec, theta ) );
+
+			}
+
+			binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );
+
+		}
+
+		// if the curve is closed, postprocess the vectors so the first and last normal vectors are the same
+
+		if ( closed === true ) {
+
+			let theta = Math.acos( clamp( normals[ 0 ].dot( normals[ segments ] ), - 1, 1 ) );
+			theta /= segments;
+
+			if ( tangents[ 0 ].dot( vec.crossVectors( normals[ 0 ], normals[ segments ] ) ) > 0 ) {
+
+				theta = - theta;
+
+			}
+
+			for ( let i = 1; i <= segments; i ++ ) {
+
+				// twist a little...
+				normals[ i ].applyMatrix4( mat.makeRotationAxis( tangents[ i ], theta * i ) );
+				binormals[ i ].crossVectors( tangents[ i ], normals[ i ] );
+
+			}
+
+		}
+
+		return {
+			tangents: tangents,
+			normals: normals,
+			binormals: binormals
+		};
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+	copy( source ) {
+
+		this.arcLengthDivisions = source.arcLengthDivisions;
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = {
+			metadata: {
+				version: 4.6,
+				type: 'Curve',
+				generator: 'Curve.toJSON'
+			}
+		};
+
+		data.arcLengthDivisions = this.arcLengthDivisions;
+		data.type = this.type;
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		this.arcLengthDivisions = json.arcLengthDivisions;
+
+		return this;
+
+	}
+
+}
+
+class EllipseCurve extends Curve {
+
+	constructor( aX = 0, aY = 0, xRadius = 1, yRadius = 1, aStartAngle = 0, aEndAngle = Math.PI * 2, aClockwise = false, aRotation = 0 ) {
+
+		super();
+
+		this.isEllipseCurve = true;
+
+		this.type = 'EllipseCurve';
+
+		this.aX = aX;
+		this.aY = aY;
+
+		this.xRadius = xRadius;
+		this.yRadius = yRadius;
+
+		this.aStartAngle = aStartAngle;
+		this.aEndAngle = aEndAngle;
+
+		this.aClockwise = aClockwise;
+
+		this.aRotation = aRotation;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector2() ) {
+
+		const point = optionalTarget;
+
+		const twoPi = Math.PI * 2;
+		let deltaAngle = this.aEndAngle - this.aStartAngle;
+		const samePoints = Math.abs( deltaAngle ) < Number.EPSILON;
+
+		// ensures that deltaAngle is 0 .. 2 PI
+		while ( deltaAngle < 0 ) deltaAngle += twoPi;
+		while ( deltaAngle > twoPi ) deltaAngle -= twoPi;
+
+		if ( deltaAngle < Number.EPSILON ) {
+
+			if ( samePoints ) {
+
+				deltaAngle = 0;
+
+			} else {
+
+				deltaAngle = twoPi;
+
+			}
+
+		}
+
+		if ( this.aClockwise === true && ! samePoints ) {
+
+			if ( deltaAngle === twoPi ) {
+
+				deltaAngle = - twoPi;
+
+			} else {
+
+				deltaAngle = deltaAngle - twoPi;
+
+			}
+
+		}
+
+		const angle = this.aStartAngle + t * deltaAngle;
+		let x = this.aX + this.xRadius * Math.cos( angle );
+		let y = this.aY + this.yRadius * Math.sin( angle );
+
+		if ( this.aRotation !== 0 ) {
+
+			const cos = Math.cos( this.aRotation );
+			const sin = Math.sin( this.aRotation );
+
+			const tx = x - this.aX;
+			const ty = y - this.aY;
+
+			// Rotate the point about the center of the ellipse.
+			x = tx * cos - ty * sin + this.aX;
+			y = tx * sin + ty * cos + this.aY;
+
+		}
+
+		return point.set( x, y );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.aX = source.aX;
+		this.aY = source.aY;
+
+		this.xRadius = source.xRadius;
+		this.yRadius = source.yRadius;
+
+		this.aStartAngle = source.aStartAngle;
+		this.aEndAngle = source.aEndAngle;
+
+		this.aClockwise = source.aClockwise;
+
+		this.aRotation = source.aRotation;
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.aX = this.aX;
+		data.aY = this.aY;
+
+		data.xRadius = this.xRadius;
+		data.yRadius = this.yRadius;
+
+		data.aStartAngle = this.aStartAngle;
+		data.aEndAngle = this.aEndAngle;
+
+		data.aClockwise = this.aClockwise;
+
+		data.aRotation = this.aRotation;
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.aX = json.aX;
+		this.aY = json.aY;
+
+		this.xRadius = json.xRadius;
+		this.yRadius = json.yRadius;
+
+		this.aStartAngle = json.aStartAngle;
+		this.aEndAngle = json.aEndAngle;
+
+		this.aClockwise = json.aClockwise;
+
+		this.aRotation = json.aRotation;
+
+		return this;
+
+	}
+
+}
+
+class ArcCurve extends EllipseCurve {
+
+	constructor( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
+
+		super( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );
+
+		this.isArcCurve = true;
+
+		this.type = 'ArcCurve';
+
+	}
+
+}
+
+/**
+ * Centripetal CatmullRom Curve - which is useful for avoiding
+ * cusps and self-intersections in non-uniform catmull rom curves.
+ * http://www.cemyuksel.com/research/catmullrom_param/catmullrom.pdf
+ *
+ * curve.type accepts centripetal(default), chordal and catmullrom
+ * curve.tension is used for catmullrom which defaults to 0.5
+ */
+
+
+/*
+Based on an optimized c++ solution in
+ - http://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/
+ - http://ideone.com/NoEbVM
+
+This CubicPoly class could be used for reusing some variables and calculations,
+but for three.js curve use, it could be possible inlined and flatten into a single function call
+which can be placed in CurveUtils.
+*/
+
+function CubicPoly() {
+
+	let c0 = 0, c1 = 0, c2 = 0, c3 = 0;
+
+	/*
+	 * Compute coefficients for a cubic polynomial
+	 *   p(s) = c0 + c1*s + c2*s^2 + c3*s^3
+	 * such that
+	 *   p(0) = x0, p(1) = x1
+	 *  and
+	 *   p'(0) = t0, p'(1) = t1.
+	 */
+	function init( x0, x1, t0, t1 ) {
+
+		c0 = x0;
+		c1 = t0;
+		c2 = - 3 * x0 + 3 * x1 - 2 * t0 - t1;
+		c3 = 2 * x0 - 2 * x1 + t0 + t1;
+
+	}
+
+	return {
+
+		initCatmullRom: function ( x0, x1, x2, x3, tension ) {
+
+			init( x1, x2, tension * ( x2 - x0 ), tension * ( x3 - x1 ) );
+
+		},
+
+		initNonuniformCatmullRom: function ( x0, x1, x2, x3, dt0, dt1, dt2 ) {
+
+			// compute tangents when parameterized in [t1,t2]
+			let t1 = ( x1 - x0 ) / dt0 - ( x2 - x0 ) / ( dt0 + dt1 ) + ( x2 - x1 ) / dt1;
+			let t2 = ( x2 - x1 ) / dt1 - ( x3 - x1 ) / ( dt1 + dt2 ) + ( x3 - x2 ) / dt2;
+
+			// rescale tangents for parametrization in [0,1]
+			t1 *= dt1;
+			t2 *= dt1;
+
+			init( x1, x2, t1, t2 );
+
+		},
+
+		calc: function ( t ) {
+
+			const t2 = t * t;
+			const t3 = t2 * t;
+			return c0 + c1 * t + c2 * t2 + c3 * t3;
+
+		}
+
+	};
+
+}
+
+//
+
+const tmp = /*@__PURE__*/ new Vector3();
+const px = /*@__PURE__*/ new CubicPoly();
+const py = /*@__PURE__*/ new CubicPoly();
+const pz = /*@__PURE__*/ new CubicPoly();
+
+class CatmullRomCurve3 extends Curve {
+
+	constructor( points = [], closed = false, curveType = 'centripetal', tension = 0.5 ) {
+
+		super();
+
+		this.isCatmullRomCurve3 = true;
+
+		this.type = 'CatmullRomCurve3';
+
+		this.points = points;
+		this.closed = closed;
+		this.curveType = curveType;
+		this.tension = tension;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector3() ) {
+
+		const point = optionalTarget;
+
+		const points = this.points;
+		const l = points.length;
+
+		const p = ( l - ( this.closed ? 0 : 1 ) ) * t;
+		let intPoint = Math.floor( p );
+		let weight = p - intPoint;
+
+		if ( this.closed ) {
+
+			intPoint += intPoint > 0 ? 0 : ( Math.floor( Math.abs( intPoint ) / l ) + 1 ) * l;
+
+		} else if ( weight === 0 && intPoint === l - 1 ) {
+
+			intPoint = l - 2;
+			weight = 1;
+
+		}
+
+		let p0, p3; // 4 points (p1 & p2 defined below)
+
+		if ( this.closed || intPoint > 0 ) {
+
+			p0 = points[ ( intPoint - 1 ) % l ];
+
+		} else {
+
+			// extrapolate first point
+			tmp.subVectors( points[ 0 ], points[ 1 ] ).add( points[ 0 ] );
+			p0 = tmp;
+
+		}
+
+		const p1 = points[ intPoint % l ];
+		const p2 = points[ ( intPoint + 1 ) % l ];
+
+		if ( this.closed || intPoint + 2 < l ) {
+
+			p3 = points[ ( intPoint + 2 ) % l ];
+
+		} else {
+
+			// extrapolate last point
+			tmp.subVectors( points[ l - 1 ], points[ l - 2 ] ).add( points[ l - 1 ] );
+			p3 = tmp;
+
+		}
+
+		if ( this.curveType === 'centripetal' || this.curveType === 'chordal' ) {
+
+			// init Centripetal / Chordal Catmull-Rom
+			const pow = this.curveType === 'chordal' ? 0.5 : 0.25;
+			let dt0 = Math.pow( p0.distanceToSquared( p1 ), pow );
+			let dt1 = Math.pow( p1.distanceToSquared( p2 ), pow );
+			let dt2 = Math.pow( p2.distanceToSquared( p3 ), pow );
+
+			// safety check for repeated points
+			if ( dt1 < 1e-4 ) dt1 = 1.0;
+			if ( dt0 < 1e-4 ) dt0 = dt1;
+			if ( dt2 < 1e-4 ) dt2 = dt1;
+
+			px.initNonuniformCatmullRom( p0.x, p1.x, p2.x, p3.x, dt0, dt1, dt2 );
+			py.initNonuniformCatmullRom( p0.y, p1.y, p2.y, p3.y, dt0, dt1, dt2 );
+			pz.initNonuniformCatmullRom( p0.z, p1.z, p2.z, p3.z, dt0, dt1, dt2 );
+
+		} else if ( this.curveType === 'catmullrom' ) {
+
+			px.initCatmullRom( p0.x, p1.x, p2.x, p3.x, this.tension );
+			py.initCatmullRom( p0.y, p1.y, p2.y, p3.y, this.tension );
+			pz.initCatmullRom( p0.z, p1.z, p2.z, p3.z, this.tension );
+
+		}
+
+		point.set(
+			px.calc( weight ),
+			py.calc( weight ),
+			pz.calc( weight )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.points = [];
+
+		for ( let i = 0, l = source.points.length; i < l; i ++ ) {
+
+			const point = source.points[ i ];
+
+			this.points.push( point.clone() );
+
+		}
+
+		this.closed = source.closed;
+		this.curveType = source.curveType;
+		this.tension = source.tension;
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.points = [];
+
+		for ( let i = 0, l = this.points.length; i < l; i ++ ) {
+
+			const point = this.points[ i ];
+			data.points.push( point.toArray() );
+
+		}
+
+		data.closed = this.closed;
+		data.curveType = this.curveType;
+		data.tension = this.tension;
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.points = [];
+
+		for ( let i = 0, l = json.points.length; i < l; i ++ ) {
+
+			const point = json.points[ i ];
+			this.points.push( new Vector3().fromArray( point ) );
+
+		}
+
+		this.closed = json.closed;
+		this.curveType = json.curveType;
+		this.tension = json.tension;
+
+		return this;
+
+	}
+
+}
+
+/**
+ * Bezier Curves formulas obtained from
+ * https://en.wikipedia.org/wiki/B%C3%A9zier_curve
+ */
+
+function CatmullRom( t, p0, p1, p2, p3 ) {
+
+	const v0 = ( p2 - p0 ) * 0.5;
+	const v1 = ( p3 - p1 ) * 0.5;
+	const t2 = t * t;
+	const t3 = t * t2;
+	return ( 2 * p1 - 2 * p2 + v0 + v1 ) * t3 + ( - 3 * p1 + 3 * p2 - 2 * v0 - v1 ) * t2 + v0 * t + p1;
+
+}
+
+//
+
+function QuadraticBezierP0( t, p ) {
+
+	const k = 1 - t;
+	return k * k * p;
+
+}
+
+function QuadraticBezierP1( t, p ) {
+
+	return 2 * ( 1 - t ) * t * p;
+
+}
+
+function QuadraticBezierP2( t, p ) {
+
+	return t * t * p;
+
+}
+
+function QuadraticBezier( t, p0, p1, p2 ) {
+
+	return QuadraticBezierP0( t, p0 ) + QuadraticBezierP1( t, p1 ) +
+		QuadraticBezierP2( t, p2 );
+
+}
+
+//
+
+function CubicBezierP0( t, p ) {
+
+	const k = 1 - t;
+	return k * k * k * p;
+
+}
+
+function CubicBezierP1( t, p ) {
+
+	const k = 1 - t;
+	return 3 * k * k * t * p;
+
+}
+
+function CubicBezierP2( t, p ) {
+
+	return 3 * ( 1 - t ) * t * t * p;
+
+}
+
+function CubicBezierP3( t, p ) {
+
+	return t * t * t * p;
+
+}
+
+function CubicBezier( t, p0, p1, p2, p3 ) {
+
+	return CubicBezierP0( t, p0 ) + CubicBezierP1( t, p1 ) + CubicBezierP2( t, p2 ) +
+		CubicBezierP3( t, p3 );
+
+}
+
+class CubicBezierCurve extends Curve {
+
+	constructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2(), v3 = new Vector2() ) {
+
+		super();
+
+		this.isCubicBezierCurve = true;
+
+		this.type = 'CubicBezierCurve';
+
+		this.v0 = v0;
+		this.v1 = v1;
+		this.v2 = v2;
+		this.v3 = v3;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector2() ) {
+
+		const point = optionalTarget;
+
+		const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
+
+		point.set(
+			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
+			CubicBezier( t, v0.y, v1.y, v2.y, v3.y )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v0.copy( source.v0 );
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+		this.v3.copy( source.v3 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v0 = this.v0.toArray();
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+		data.v3 = this.v3.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v0.fromArray( json.v0 );
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+		this.v3.fromArray( json.v3 );
+
+		return this;
+
+	}
+
+}
+
+class CubicBezierCurve3 extends Curve {
+
+	constructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3(), v3 = new Vector3() ) {
+
+		super();
+
+		this.isCubicBezierCurve3 = true;
+
+		this.type = 'CubicBezierCurve3';
+
+		this.v0 = v0;
+		this.v1 = v1;
+		this.v2 = v2;
+		this.v3 = v3;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector3() ) {
+
+		const point = optionalTarget;
+
+		const v0 = this.v0, v1 = this.v1, v2 = this.v2, v3 = this.v3;
+
+		point.set(
+			CubicBezier( t, v0.x, v1.x, v2.x, v3.x ),
+			CubicBezier( t, v0.y, v1.y, v2.y, v3.y ),
+			CubicBezier( t, v0.z, v1.z, v2.z, v3.z )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v0.copy( source.v0 );
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+		this.v3.copy( source.v3 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v0 = this.v0.toArray();
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+		data.v3 = this.v3.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v0.fromArray( json.v0 );
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+		this.v3.fromArray( json.v3 );
+
+		return this;
+
+	}
+
+}
+
+class LineCurve extends Curve {
+
+	constructor( v1 = new Vector2(), v2 = new Vector2() ) {
+
+		super();
+
+		this.isLineCurve = true;
+
+		this.type = 'LineCurve';
+
+		this.v1 = v1;
+		this.v2 = v2;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector2() ) {
+
+		const point = optionalTarget;
+
+		if ( t === 1 ) {
+
+			point.copy( this.v2 );
+
+		} else {
+
+			point.copy( this.v2 ).sub( this.v1 );
+			point.multiplyScalar( t ).add( this.v1 );
+
+		}
+
+		return point;
+
+	}
+
+	// Line curve is linear, so we can overwrite default getPointAt
+	getPointAt( u, optionalTarget ) {
+
+		return this.getPoint( u, optionalTarget );
+
+	}
+
+	getTangent( t, optionalTarget = new Vector2() ) {
+
+		return optionalTarget.subVectors( this.v2, this.v1 ).normalize();
+
+	}
+
+	getTangentAt( u, optionalTarget ) {
+
+		return this.getTangent( u, optionalTarget );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+
+		return this;
+
+	}
+
+}
+
+class LineCurve3 extends Curve {
+
+	constructor( v1 = new Vector3(), v2 = new Vector3() ) {
+
+		super();
+
+		this.isLineCurve3 = true;
+
+		this.type = 'LineCurve3';
+
+		this.v1 = v1;
+		this.v2 = v2;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector3() ) {
+
+		const point = optionalTarget;
+
+		if ( t === 1 ) {
+
+			point.copy( this.v2 );
+
+		} else {
+
+			point.copy( this.v2 ).sub( this.v1 );
+			point.multiplyScalar( t ).add( this.v1 );
+
+		}
+
+		return point;
+
+	}
+
+	// Line curve is linear, so we can overwrite default getPointAt
+	getPointAt( u, optionalTarget ) {
+
+		return this.getPoint( u, optionalTarget );
+
+	}
+
+	getTangent( t, optionalTarget = new Vector3() ) {
+
+		return optionalTarget.subVectors( this.v2, this.v1 ).normalize();
+
+	}
+
+	getTangentAt( u, optionalTarget ) {
+
+		return this.getTangent( u, optionalTarget );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+
+		return this;
+
+	}
+
+}
+
+class QuadraticBezierCurve extends Curve {
+
+	constructor( v0 = new Vector2(), v1 = new Vector2(), v2 = new Vector2() ) {
+
+		super();
+
+		this.isQuadraticBezierCurve = true;
+
+		this.type = 'QuadraticBezierCurve';
+
+		this.v0 = v0;
+		this.v1 = v1;
+		this.v2 = v2;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector2() ) {
+
+		const point = optionalTarget;
+
+		const v0 = this.v0, v1 = this.v1, v2 = this.v2;
+
+		point.set(
+			QuadraticBezier( t, v0.x, v1.x, v2.x ),
+			QuadraticBezier( t, v0.y, v1.y, v2.y )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v0.copy( source.v0 );
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v0 = this.v0.toArray();
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v0.fromArray( json.v0 );
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+
+		return this;
+
+	}
+
+}
+
+class QuadraticBezierCurve3 extends Curve {
+
+	constructor( v0 = new Vector3(), v1 = new Vector3(), v2 = new Vector3() ) {
+
+		super();
+
+		this.isQuadraticBezierCurve3 = true;
+
+		this.type = 'QuadraticBezierCurve3';
+
+		this.v0 = v0;
+		this.v1 = v1;
+		this.v2 = v2;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector3() ) {
+
+		const point = optionalTarget;
+
+		const v0 = this.v0, v1 = this.v1, v2 = this.v2;
+
+		point.set(
+			QuadraticBezier( t, v0.x, v1.x, v2.x ),
+			QuadraticBezier( t, v0.y, v1.y, v2.y ),
+			QuadraticBezier( t, v0.z, v1.z, v2.z )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.v0.copy( source.v0 );
+		this.v1.copy( source.v1 );
+		this.v2.copy( source.v2 );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.v0 = this.v0.toArray();
+		data.v1 = this.v1.toArray();
+		data.v2 = this.v2.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.v0.fromArray( json.v0 );
+		this.v1.fromArray( json.v1 );
+		this.v2.fromArray( json.v2 );
+
+		return this;
+
+	}
+
+}
+
+class SplineCurve extends Curve {
+
+	constructor( points = [] ) {
+
+		super();
+
+		this.isSplineCurve = true;
+
+		this.type = 'SplineCurve';
+
+		this.points = points;
+
+	}
+
+	getPoint( t, optionalTarget = new Vector2() ) {
+
+		const point = optionalTarget;
+
+		const points = this.points;
+		const p = ( points.length - 1 ) * t;
+
+		const intPoint = Math.floor( p );
+		const weight = p - intPoint;
+
+		const p0 = points[ intPoint === 0 ? intPoint : intPoint - 1 ];
+		const p1 = points[ intPoint ];
+		const p2 = points[ intPoint > points.length - 2 ? points.length - 1 : intPoint + 1 ];
+		const p3 = points[ intPoint > points.length - 3 ? points.length - 1 : intPoint + 2 ];
+
+		point.set(
+			CatmullRom( weight, p0.x, p1.x, p2.x, p3.x ),
+			CatmullRom( weight, p0.y, p1.y, p2.y, p3.y )
+		);
+
+		return point;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.points = [];
+
+		for ( let i = 0, l = source.points.length; i < l; i ++ ) {
+
+			const point = source.points[ i ];
+
+			this.points.push( point.clone() );
+
+		}
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.points = [];
+
+		for ( let i = 0, l = this.points.length; i < l; i ++ ) {
+
+			const point = this.points[ i ];
+			data.points.push( point.toArray() );
+
+		}
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.points = [];
+
+		for ( let i = 0, l = json.points.length; i < l; i ++ ) {
+
+			const point = json.points[ i ];
+			this.points.push( new Vector2().fromArray( point ) );
+
+		}
+
+		return this;
+
+	}
+
+}
+
+var Curves = /*#__PURE__*/Object.freeze({
+	__proto__: null,
+	ArcCurve: ArcCurve,
+	CatmullRomCurve3: CatmullRomCurve3,
+	CubicBezierCurve: CubicBezierCurve,
+	CubicBezierCurve3: CubicBezierCurve3,
+	EllipseCurve: EllipseCurve,
+	LineCurve: LineCurve,
+	LineCurve3: LineCurve3,
+	QuadraticBezierCurve: QuadraticBezierCurve,
+	QuadraticBezierCurve3: QuadraticBezierCurve3,
+	SplineCurve: SplineCurve
+});
+
+/**************************************************************
+ *	Curved Path - a curve path is simply a array of connected
+ *  curves, but retains the api of a curve
+ **************************************************************/
+
+class CurvePath extends Curve {
+
+	constructor() {
+
+		super();
+
+		this.type = 'CurvePath';
+
+		this.curves = [];
+		this.autoClose = false; // Automatically closes the path
+
+	}
+
+	add( curve ) {
+
+		this.curves.push( curve );
+
+	}
+
+	closePath() {
+
+		// Add a line curve if start and end of lines are not connected
+		const startPoint = this.curves[ 0 ].getPoint( 0 );
+		const endPoint = this.curves[ this.curves.length - 1 ].getPoint( 1 );
+
+		if ( ! startPoint.equals( endPoint ) ) {
+
+			const lineType = ( startPoint.isVector2 === true ) ? 'LineCurve' : 'LineCurve3';
+			this.curves.push( new Curves[ lineType ]( endPoint, startPoint ) );
+
+		}
+
+		return this;
+
+	}
+
+	// To get accurate point with reference to
+	// entire path distance at time t,
+	// following has to be done:
+
+	// 1. Length of each sub path have to be known
+	// 2. Locate and identify type of curve
+	// 3. Get t for the curve
+	// 4. Return curve.getPointAt(t')
+
+	getPoint( t, optionalTarget ) {
+
+		const d = t * this.getLength();
+		const curveLengths = this.getCurveLengths();
+		let i = 0;
+
+		// To think about boundaries points.
+
+		while ( i < curveLengths.length ) {
+
+			if ( curveLengths[ i ] >= d ) {
+
+				const diff = curveLengths[ i ] - d;
+				const curve = this.curves[ i ];
+
+				const segmentLength = curve.getLength();
+				const u = segmentLength === 0 ? 0 : 1 - diff / segmentLength;
+
+				return curve.getPointAt( u, optionalTarget );
+
+			}
+
+			i ++;
+
+		}
+
+		return null;
+
+		// loop where sum != 0, sum > d , sum+1 <d
+
+	}
+
+	// We cannot use the default THREE.Curve getPoint() with getLength() because in
+	// THREE.Curve, getLength() depends on getPoint() but in THREE.CurvePath
+	// getPoint() depends on getLength
+
+	getLength() {
+
+		const lens = this.getCurveLengths();
+		return lens[ lens.length - 1 ];
+
+	}
+
+	// cacheLengths must be recalculated.
+	updateArcLengths() {
+
+		this.needsUpdate = true;
+		this.cacheLengths = null;
+		this.getCurveLengths();
+
+	}
+
+	// Compute lengths and cache them
+	// We cannot overwrite getLengths() because UtoT mapping uses it.
+
+	getCurveLengths() {
+
+		// We use cache values if curves and cache array are same length
+
+		if ( this.cacheLengths && this.cacheLengths.length === this.curves.length ) {
+
+			return this.cacheLengths;
+
+		}
+
+		// Get length of sub-curve
+		// Push sums into cached array
+
+		const lengths = [];
+		let sums = 0;
+
+		for ( let i = 0, l = this.curves.length; i < l; i ++ ) {
+
+			sums += this.curves[ i ].getLength();
+			lengths.push( sums );
+
+		}
+
+		this.cacheLengths = lengths;
+
+		return lengths;
+
+	}
+
+	getSpacedPoints( divisions = 40 ) {
+
+		const points = [];
+
+		for ( let i = 0; i <= divisions; i ++ ) {
+
+			points.push( this.getPoint( i / divisions ) );
+
+		}
+
+		if ( this.autoClose ) {
+
+			points.push( points[ 0 ] );
+
+		}
+
+		return points;
+
+	}
+
+	getPoints( divisions = 12 ) {
+
+		const points = [];
+		let last;
+
+		for ( let i = 0, curves = this.curves; i < curves.length; i ++ ) {
+
+			const curve = curves[ i ];
+			const resolution = curve.isEllipseCurve ? divisions * 2
+				: ( curve.isLineCurve || curve.isLineCurve3 ) ? 1
+					: curve.isSplineCurve ? divisions * curve.points.length
+						: divisions;
+
+			const pts = curve.getPoints( resolution );
+
+			for ( let j = 0; j < pts.length; j ++ ) {
+
+				const point = pts[ j ];
+
+				if ( last && last.equals( point ) ) continue; // ensures no consecutive points are duplicates
+
+				points.push( point );
+				last = point;
+
+			}
+
+		}
+
+		if ( this.autoClose && points.length > 1 && ! points[ points.length - 1 ].equals( points[ 0 ] ) ) {
+
+			points.push( points[ 0 ] );
+
+		}
+
+		return points;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.curves = [];
+
+		for ( let i = 0, l = source.curves.length; i < l; i ++ ) {
+
+			const curve = source.curves[ i ];
+
+			this.curves.push( curve.clone() );
+
+		}
+
+		this.autoClose = source.autoClose;
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.autoClose = this.autoClose;
+		data.curves = [];
+
+		for ( let i = 0, l = this.curves.length; i < l; i ++ ) {
+
+			const curve = this.curves[ i ];
+			data.curves.push( curve.toJSON() );
+
+		}
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.autoClose = json.autoClose;
+		this.curves = [];
+
+		for ( let i = 0, l = json.curves.length; i < l; i ++ ) {
+
+			const curve = json.curves[ i ];
+			this.curves.push( new Curves[ curve.type ]().fromJSON( curve ) );
+
+		}
+
+		return this;
+
+	}
+
+}
+
+class Path extends CurvePath {
+
+	constructor( points ) {
+
+		super();
+
+		this.type = 'Path';
+
+		this.currentPoint = new Vector2();
+
+		if ( points ) {
+
+			this.setFromPoints( points );
+
+		}
+
+	}
+
+	setFromPoints( points ) {
+
+		this.moveTo( points[ 0 ].x, points[ 0 ].y );
+
+		for ( let i = 1, l = points.length; i < l; i ++ ) {
+
+			this.lineTo( points[ i ].x, points[ i ].y );
+
+		}
+
+		return this;
+
+	}
+
+	moveTo( x, y ) {
+
+		this.currentPoint.set( x, y ); // TODO consider referencing vectors instead of copying?
+
+		return this;
+
+	}
+
+	lineTo( x, y ) {
+
+		const curve = new LineCurve( this.currentPoint.clone(), new Vector2( x, y ) );
+		this.curves.push( curve );
+
+		this.currentPoint.set( x, y );
+
+		return this;
+
+	}
+
+	quadraticCurveTo( aCPx, aCPy, aX, aY ) {
+
+		const curve = new QuadraticBezierCurve(
+			this.currentPoint.clone(),
+			new Vector2( aCPx, aCPy ),
+			new Vector2( aX, aY )
+		);
+
+		this.curves.push( curve );
+
+		this.currentPoint.set( aX, aY );
+
+		return this;
+
+	}
+
+	bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {
+
+		const curve = new CubicBezierCurve(
+			this.currentPoint.clone(),
+			new Vector2( aCP1x, aCP1y ),
+			new Vector2( aCP2x, aCP2y ),
+			new Vector2( aX, aY )
+		);
+
+		this.curves.push( curve );
+
+		this.currentPoint.set( aX, aY );
+
+		return this;
+
+	}
+
+	splineThru( pts /*Array of Vector*/ ) {
+
+		const npts = [ this.currentPoint.clone() ].concat( pts );
+
+		const curve = new SplineCurve( npts );
+		this.curves.push( curve );
+
+		this.currentPoint.copy( pts[ pts.length - 1 ] );
+
+		return this;
+
+	}
+
+	arc( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
+
+		const x0 = this.currentPoint.x;
+		const y0 = this.currentPoint.y;
+
+		this.absarc( aX + x0, aY + y0, aRadius,
+			aStartAngle, aEndAngle, aClockwise );
+
+		return this;
+
+	}
+
+	absarc( aX, aY, aRadius, aStartAngle, aEndAngle, aClockwise ) {
+
+		this.absellipse( aX, aY, aRadius, aRadius, aStartAngle, aEndAngle, aClockwise );
+
+		return this;
+
+	}
+
+	ellipse( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
+
+		const x0 = this.currentPoint.x;
+		const y0 = this.currentPoint.y;
+
+		this.absellipse( aX + x0, aY + y0, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );
+
+		return this;
+
+	}
+
+	absellipse( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation ) {
+
+		const curve = new EllipseCurve( aX, aY, xRadius, yRadius, aStartAngle, aEndAngle, aClockwise, aRotation );
+
+		if ( this.curves.length > 0 ) {
+
+			// if a previous curve is present, attempt to join
+			const firstPoint = curve.getPoint( 0 );
+
+			if ( ! firstPoint.equals( this.currentPoint ) ) {
+
+				this.lineTo( firstPoint.x, firstPoint.y );
+
+			}
+
+		}
+
+		this.curves.push( curve );
+
+		const lastPoint = curve.getPoint( 1 );
+		this.currentPoint.copy( lastPoint );
+
+		return this;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.currentPoint.copy( source.currentPoint );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.currentPoint = this.currentPoint.toArray();
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.currentPoint.fromArray( json.currentPoint );
+
+		return this;
+
+	}
+
+}
+
+class LatheGeometry extends BufferGeometry {
+
+	constructor( points = [ new Vector2( 0, - 0.5 ), new Vector2( 0.5, 0 ), new Vector2( 0, 0.5 ) ], segments = 12, phiStart = 0, phiLength = Math.PI * 2 ) {
+
+		super();
+
+		this.type = 'LatheGeometry';
+
+		this.parameters = {
+			points: points,
+			segments: segments,
+			phiStart: phiStart,
+			phiLength: phiLength
+		};
+
+		segments = Math.floor( segments );
+
+		// clamp phiLength so it's in range of [ 0, 2PI ]
+
+		phiLength = clamp( phiLength, 0, Math.PI * 2 );
+
+		// buffers
+
+		const indices = [];
+		const vertices = [];
+		const uvs = [];
+		const initNormals = [];
+		const normals = [];
+
+		// helper variables
+
+		const inverseSegments = 1.0 / segments;
+		const vertex = new Vector3();
+		const uv = new Vector2();
+		const normal = new Vector3();
+		const curNormal = new Vector3();
+		const prevNormal = new Vector3();
+		let dx = 0;
+		let dy = 0;
+
+		// pre-compute normals for initial "meridian"
+
+		for ( let j = 0; j <= ( points.length - 1 ); j ++ ) {
+
+			switch ( j ) {
+
+				case 0:				// special handling for 1st vertex on path
+
+					dx = points[ j + 1 ].x - points[ j ].x;
+					dy = points[ j + 1 ].y - points[ j ].y;
+
+					normal.x = dy * 1.0;
+					normal.y = - dx;
+					normal.z = dy * 0.0;
+
+					prevNormal.copy( normal );
+
+					normal.normalize();
+
+					initNormals.push( normal.x, normal.y, normal.z );
+
+					break;
+
+				case ( points.length - 1 ):	// special handling for last Vertex on path
+
+					initNormals.push( prevNormal.x, prevNormal.y, prevNormal.z );
+
+					break;
+
+				default:			// default handling for all vertices in between
+
+					dx = points[ j + 1 ].x - points[ j ].x;
+					dy = points[ j + 1 ].y - points[ j ].y;
+
+					normal.x = dy * 1.0;
+					normal.y = - dx;
+					normal.z = dy * 0.0;
+
+					curNormal.copy( normal );
+
+					normal.x += prevNormal.x;
+					normal.y += prevNormal.y;
+					normal.z += prevNormal.z;
+
+					normal.normalize();
+
+					initNormals.push( normal.x, normal.y, normal.z );
+
+					prevNormal.copy( curNormal );
+
+			}
+
+		}
+
+		// generate vertices, uvs and normals
+
+		for ( let i = 0; i <= segments; i ++ ) {
+
+			const phi = phiStart + i * inverseSegments * phiLength;
+
+			const sin = Math.sin( phi );
+			const cos = Math.cos( phi );
+
+			for ( let j = 0; j <= ( points.length - 1 ); j ++ ) {
+
+				// vertex
+
+				vertex.x = points[ j ].x * sin;
+				vertex.y = points[ j ].y;
+				vertex.z = points[ j ].x * cos;
+
+				vertices.push( vertex.x, vertex.y, vertex.z );
+
+				// uv
+
+				uv.x = i / segments;
+				uv.y = j / ( points.length - 1 );
+
+				uvs.push( uv.x, uv.y );
+
+				// normal
+
+				const x = initNormals[ 3 * j + 0 ] * sin;
+				const y = initNormals[ 3 * j + 1 ];
+				const z = initNormals[ 3 * j + 0 ] * cos;
+
+				normals.push( x, y, z );
+
+			}
+
+		}
+
+		// indices
+
+		for ( let i = 0; i < segments; i ++ ) {
+
+			for ( let j = 0; j < ( points.length - 1 ); j ++ ) {
+
+				const base = j + i * points.length;
+
+				const a = base;
+				const b = base + points.length;
+				const c = base + points.length + 1;
+				const d = base + 1;
+
+				// faces
+
+				indices.push( a, b, d );
+				indices.push( c, d, b );
+
+			}
+
+		}
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	static fromJSON( data ) {
+
+		return new LatheGeometry( data.points, data.segments, data.phiStart, data.phiLength );
+
+	}
+
+}
+
+class CapsuleGeometry extends LatheGeometry {
+
+	constructor( radius = 1, length = 1, capSegments = 4, radialSegments = 8 ) {
+
+		const path = new Path();
+		path.absarc( 0, - length / 2, radius, Math.PI * 1.5, 0 );
+		path.absarc( 0, length / 2, radius, 0, Math.PI * 0.5 );
+
+		super( path.getPoints( capSegments ), radialSegments );
+
+		this.type = 'CapsuleGeometry';
+
+		this.parameters = {
+			radius: radius,
+			length: length,
+			capSegments: capSegments,
+			radialSegments: radialSegments,
+		};
+
+	}
+
+	static fromJSON( data ) {
+
+		return new CapsuleGeometry( data.radius, data.length, data.capSegments, data.radialSegments );
+
+	}
+
+}
+
+class CircleGeometry extends BufferGeometry {
+
+	constructor( radius = 1, segments = 32, thetaStart = 0, thetaLength = Math.PI * 2 ) {
+
+		super();
+
+		this.type = 'CircleGeometry';
+
+		this.parameters = {
+			radius: radius,
+			segments: segments,
+			thetaStart: thetaStart,
+			thetaLength: thetaLength
+		};
+
+		segments = Math.max( 3, segments );
+
+		// buffers
+
+		const indices = [];
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+
+		// helper variables
+
+		const vertex = new Vector3();
+		const uv = new Vector2();
+
+		// center point
+
+		vertices.push( 0, 0, 0 );
+		normals.push( 0, 0, 1 );
+		uvs.push( 0.5, 0.5 );
+
+		for ( let s = 0, i = 3; s <= segments; s ++, i += 3 ) {
+
+			const segment = thetaStart + s / segments * thetaLength;
+
+			// vertex
+
+			vertex.x = radius * Math.cos( segment );
+			vertex.y = radius * Math.sin( segment );
+
+			vertices.push( vertex.x, vertex.y, vertex.z );
+
+			// normal
+
+			normals.push( 0, 0, 1 );
+
+			// uvs
+
+			uv.x = ( vertices[ i ] / radius + 1 ) / 2;
+			uv.y = ( vertices[ i + 1 ] / radius + 1 ) / 2;
+
+			uvs.push( uv.x, uv.y );
+
+		}
+
+		// indices
+
+		for ( let i = 1; i <= segments; i ++ ) {
+
+			indices.push( i, i + 1, 0 );
+
+		}
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	static fromJSON( data ) {
+
+		return new CircleGeometry( data.radius, data.segments, data.thetaStart, data.thetaLength );
+
+	}
+
+}
+
+class CylinderGeometry extends BufferGeometry {
+
+	constructor( radiusTop = 1, radiusBottom = 1, height = 1, radialSegments = 32, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {
+
+		super();
+
+		this.type = 'CylinderGeometry';
+
+		this.parameters = {
+			radiusTop: radiusTop,
+			radiusBottom: radiusBottom,
+			height: height,
+			radialSegments: radialSegments,
+			heightSegments: heightSegments,
+			openEnded: openEnded,
+			thetaStart: thetaStart,
+			thetaLength: thetaLength
+		};
+
+		const scope = this;
+
+		radialSegments = Math.floor( radialSegments );
+		heightSegments = Math.floor( heightSegments );
+
+		// buffers
+
+		const indices = [];
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+
+		// helper variables
+
+		let index = 0;
+		const indexArray = [];
+		const halfHeight = height / 2;
+		let groupStart = 0;
+
+		// generate geometry
+
+		generateTorso();
+
+		if ( openEnded === false ) {
+
+			if ( radiusTop > 0 ) generateCap( true );
+			if ( radiusBottom > 0 ) generateCap( false );
+
+		}
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+		function generateTorso() {
+
+			const normal = new Vector3();
+			const vertex = new Vector3();
+
+			let groupCount = 0;
+
+			// this will be used to calculate the normal
+			const slope = ( radiusBottom - radiusTop ) / height;
+
+			// generate vertices, normals and uvs
+
+			for ( let y = 0; y <= heightSegments; y ++ ) {
+
+				const indexRow = [];
+
+				const v = y / heightSegments;
+
+				// calculate the radius of the current row
+
+				const radius = v * ( radiusBottom - radiusTop ) + radiusTop;
+
+				for ( let x = 0; x <= radialSegments; x ++ ) {
+
+					const u = x / radialSegments;
+
+					const theta = u * thetaLength + thetaStart;
+
+					const sinTheta = Math.sin( theta );
+					const cosTheta = Math.cos( theta );
+
+					// vertex
+
+					vertex.x = radius * sinTheta;
+					vertex.y = - v * height + halfHeight;
+					vertex.z = radius * cosTheta;
+					vertices.push( vertex.x, vertex.y, vertex.z );
+
+					// normal
+
+					normal.set( sinTheta, slope, cosTheta ).normalize();
+					normals.push( normal.x, normal.y, normal.z );
+
+					// uv
+
+					uvs.push( u, 1 - v );
+
+					// save index of vertex in respective row
+
+					indexRow.push( index ++ );
+
+				}
+
+				// now save vertices of the row in our index array
+
+				indexArray.push( indexRow );
+
+			}
+
+			// generate indices
+
+			for ( let x = 0; x < radialSegments; x ++ ) {
+
+				for ( let y = 0; y < heightSegments; y ++ ) {
+
+					// we use the index array to access the correct indices
+
+					const a = indexArray[ y ][ x ];
+					const b = indexArray[ y + 1 ][ x ];
+					const c = indexArray[ y + 1 ][ x + 1 ];
+					const d = indexArray[ y ][ x + 1 ];
+
+					// faces
+
+					indices.push( a, b, d );
+					indices.push( b, c, d );
+
+					// update group counter
+
+					groupCount += 6;
+
+				}
+
+			}
+
+			// add a group to the geometry. this will ensure multi material support
+
+			scope.addGroup( groupStart, groupCount, 0 );
+
+			// calculate new start value for groups
+
+			groupStart += groupCount;
+
+		}
+
+		function generateCap( top ) {
+
+			// save the index of the first center vertex
+			const centerIndexStart = index;
+
+			const uv = new Vector2();
+			const vertex = new Vector3();
+
+			let groupCount = 0;
+
+			const radius = ( top === true ) ? radiusTop : radiusBottom;
+			const sign = ( top === true ) ? 1 : - 1;
+
+			// first we generate the center vertex data of the cap.
+			// because the geometry needs one set of uvs per face,
+			// we must generate a center vertex per face/segment
+
+			for ( let x = 1; x <= radialSegments; x ++ ) {
+
+				// vertex
+
+				vertices.push( 0, halfHeight * sign, 0 );
+
+				// normal
+
+				normals.push( 0, sign, 0 );
+
+				// uv
+
+				uvs.push( 0.5, 0.5 );
+
+				// increase index
+
+				index ++;
+
+			}
+
+			// save the index of the last center vertex
+			const centerIndexEnd = index;
+
+			// now we generate the surrounding vertices, normals and uvs
+
+			for ( let x = 0; x <= radialSegments; x ++ ) {
+
+				const u = x / radialSegments;
+				const theta = u * thetaLength + thetaStart;
+
+				const cosTheta = Math.cos( theta );
+				const sinTheta = Math.sin( theta );
+
+				// vertex
+
+				vertex.x = radius * sinTheta;
+				vertex.y = halfHeight * sign;
+				vertex.z = radius * cosTheta;
+				vertices.push( vertex.x, vertex.y, vertex.z );
+
+				// normal
+
+				normals.push( 0, sign, 0 );
+
+				// uv
+
+				uv.x = ( cosTheta * 0.5 ) + 0.5;
+				uv.y = ( sinTheta * 0.5 * sign ) + 0.5;
+				uvs.push( uv.x, uv.y );
+
+				// increase index
+
+				index ++;
+
+			}
+
+			// generate indices
+
+			for ( let x = 0; x < radialSegments; x ++ ) {
+
+				const c = centerIndexStart + x;
+				const i = centerIndexEnd + x;
+
+				if ( top === true ) {
+
+					// face top
+
+					indices.push( i, i + 1, c );
+
+				} else {
+
+					// face bottom
+
+					indices.push( i + 1, i, c );
+
+				}
+
+				groupCount += 3;
+
+			}
+
+			// add a group to the geometry. this will ensure multi material support
+
+			scope.addGroup( groupStart, groupCount, top === true ? 1 : 2 );
+
+			// calculate new start value for groups
+
+			groupStart += groupCount;
+
+		}
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	static fromJSON( data ) {
+
+		return new CylinderGeometry( data.radiusTop, data.radiusBottom, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength );
+
+	}
+
+}
+
+class ConeGeometry extends CylinderGeometry {
+
+	constructor( radius = 1, height = 1, radialSegments = 32, heightSegments = 1, openEnded = false, thetaStart = 0, thetaLength = Math.PI * 2 ) {
+
+		super( 0, radius, height, radialSegments, heightSegments, openEnded, thetaStart, thetaLength );
+
+		this.type = 'ConeGeometry';
+
+		this.parameters = {
+			radius: radius,
+			height: height,
+			radialSegments: radialSegments,
+			heightSegments: heightSegments,
+			openEnded: openEnded,
+			thetaStart: thetaStart,
+			thetaLength: thetaLength
+		};
+
+	}
+
+	static fromJSON( data ) {
+
+		return new ConeGeometry( data.radius, data.height, data.radialSegments, data.heightSegments, data.openEnded, data.thetaStart, data.thetaLength );
+
+	}
+
+}
+
+class PolyhedronGeometry extends BufferGeometry {
+
+	constructor( vertices = [], indices = [], radius = 1, detail = 0 ) {
+
+		super();
+
+		this.type = 'PolyhedronGeometry';
+
+		this.parameters = {
+			vertices: vertices,
+			indices: indices,
+			radius: radius,
+			detail: detail
+		};
+
+		// default buffer data
+
+		const vertexBuffer = [];
+		const uvBuffer = [];
+
+		// the subdivision creates the vertex buffer data
+
+		subdivide( detail );
+
+		// all vertices should lie on a conceptual sphere with a given radius
+
+		applyRadius( radius );
+
+		// finally, create the uv data
+
+		generateUVs();
+
+		// build non-indexed geometry
+
+		this.setAttribute( 'position', new Float32BufferAttribute( vertexBuffer, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( vertexBuffer.slice(), 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvBuffer, 2 ) );
+
+		if ( detail === 0 ) {
+
+			this.computeVertexNormals(); // flat normals
+
+		} else {
+
+			this.normalizeNormals(); // smooth normals
+
+		}
+
+		// helper functions
+
+		function subdivide( detail ) {
+
+			const a = new Vector3();
+			const b = new Vector3();
+			const c = new Vector3();
+
+			// iterate over all faces and apply a subdivision with the given detail value
+
+			for ( let i = 0; i < indices.length; i += 3 ) {
+
+				// get the vertices of the face
+
+				getVertexByIndex( indices[ i + 0 ], a );
+				getVertexByIndex( indices[ i + 1 ], b );
+				getVertexByIndex( indices[ i + 2 ], c );
+
+				// perform subdivision
+
+				subdivideFace( a, b, c, detail );
+
+			}
+
+		}
+
+		function subdivideFace( a, b, c, detail ) {
+
+			const cols = detail + 1;
+
+			// we use this multidimensional array as a data structure for creating the subdivision
+
+			const v = [];
+
+			// construct all of the vertices for this subdivision
+
+			for ( let i = 0; i <= cols; i ++ ) {
+
+				v[ i ] = [];
+
+				const aj = a.clone().lerp( c, i / cols );
+				const bj = b.clone().lerp( c, i / cols );
+
+				const rows = cols - i;
+
+				for ( let j = 0; j <= rows; j ++ ) {
+
+					if ( j === 0 && i === cols ) {
+
+						v[ i ][ j ] = aj;
+
+					} else {
+
+						v[ i ][ j ] = aj.clone().lerp( bj, j / rows );
+
+					}
+
+				}
+
+			}
+
+			// construct all of the faces
+
+			for ( let i = 0; i < cols; i ++ ) {
+
+				for ( let j = 0; j < 2 * ( cols - i ) - 1; j ++ ) {
+
+					const k = Math.floor( j / 2 );
+
+					if ( j % 2 === 0 ) {
+
+						pushVertex( v[ i ][ k + 1 ] );
+						pushVertex( v[ i + 1 ][ k ] );
+						pushVertex( v[ i ][ k ] );
+
+					} else {
+
+						pushVertex( v[ i ][ k + 1 ] );
+						pushVertex( v[ i + 1 ][ k + 1 ] );
+						pushVertex( v[ i + 1 ][ k ] );
+
+					}
+
+				}
+
+			}
+
+		}
+
+		function applyRadius( radius ) {
+
+			const vertex = new Vector3();
+
+			// iterate over the entire buffer and apply the radius to each vertex
+
+			for ( let i = 0; i < vertexBuffer.length; i += 3 ) {
+
+				vertex.x = vertexBuffer[ i + 0 ];
+				vertex.y = vertexBuffer[ i + 1 ];
+				vertex.z = vertexBuffer[ i + 2 ];
+
+				vertex.normalize().multiplyScalar( radius );
+
+				vertexBuffer[ i + 0 ] = vertex.x;
+				vertexBuffer[ i + 1 ] = vertex.y;
+				vertexBuffer[ i + 2 ] = vertex.z;
+
+			}
+
+		}
+
+		function generateUVs() {
+
+			const vertex = new Vector3();
+
+			for ( let i = 0; i < vertexBuffer.length; i += 3 ) {
+
+				vertex.x = vertexBuffer[ i + 0 ];
+				vertex.y = vertexBuffer[ i + 1 ];
+				vertex.z = vertexBuffer[ i + 2 ];
+
+				const u = azimuth( vertex ) / 2 / Math.PI + 0.5;
+				const v = inclination( vertex ) / Math.PI + 0.5;
+				uvBuffer.push( u, 1 - v );
+
+			}
+
+			correctUVs();
+
+			correctSeam();
+
+		}
+
+		function correctSeam() {
+
+			// handle case when face straddles the seam, see #3269
+
+			for ( let i = 0; i < uvBuffer.length; i += 6 ) {
+
+				// uv data of a single face
+
+				const x0 = uvBuffer[ i + 0 ];
+				const x1 = uvBuffer[ i + 2 ];
+				const x2 = uvBuffer[ i + 4 ];
+
+				const max = Math.max( x0, x1, x2 );
+				const min = Math.min( x0, x1, x2 );
+
+				// 0.9 is somewhat arbitrary
+
+				if ( max > 0.9 && min < 0.1 ) {
+
+					if ( x0 < 0.2 ) uvBuffer[ i + 0 ] += 1;
+					if ( x1 < 0.2 ) uvBuffer[ i + 2 ] += 1;
+					if ( x2 < 0.2 ) uvBuffer[ i + 4 ] += 1;
+
+				}
+
+			}
+
+		}
+
+		function pushVertex( vertex ) {
+
+			vertexBuffer.push( vertex.x, vertex.y, vertex.z );
+
+		}
+
+		function getVertexByIndex( index, vertex ) {
+
+			const stride = index * 3;
+
+			vertex.x = vertices[ stride + 0 ];
+			vertex.y = vertices[ stride + 1 ];
+			vertex.z = vertices[ stride + 2 ];
+
+		}
+
+		function correctUVs() {
+
+			const a = new Vector3();
+			const b = new Vector3();
+			const c = new Vector3();
+
+			const centroid = new Vector3();
+
+			const uvA = new Vector2();
+			const uvB = new Vector2();
+			const uvC = new Vector2();
+
+			for ( let i = 0, j = 0; i < vertexBuffer.length; i += 9, j += 6 ) {
+
+				a.set( vertexBuffer[ i + 0 ], vertexBuffer[ i + 1 ], vertexBuffer[ i + 2 ] );
+				b.set( vertexBuffer[ i + 3 ], vertexBuffer[ i + 4 ], vertexBuffer[ i + 5 ] );
+				c.set( vertexBuffer[ i + 6 ], vertexBuffer[ i + 7 ], vertexBuffer[ i + 8 ] );
+
+				uvA.set( uvBuffer[ j + 0 ], uvBuffer[ j + 1 ] );
+				uvB.set( uvBuffer[ j + 2 ], uvBuffer[ j + 3 ] );
+				uvC.set( uvBuffer[ j + 4 ], uvBuffer[ j + 5 ] );
+
+				centroid.copy( a ).add( b ).add( c ).divideScalar( 3 );
+
+				const azi = azimuth( centroid );
+
+				correctUV( uvA, j + 0, a, azi );
+				correctUV( uvB, j + 2, b, azi );
+				correctUV( uvC, j + 4, c, azi );
+
+			}
+
+		}
+
+		function correctUV( uv, stride, vector, azimuth ) {
+
+			if ( ( azimuth < 0 ) && ( uv.x === 1 ) ) {
+
+				uvBuffer[ stride ] = uv.x - 1;
+
+			}
+
+			if ( ( vector.x === 0 ) && ( vector.z === 0 ) ) {
+
+				uvBuffer[ stride ] = azimuth / 2 / Math.PI + 0.5;
+
+			}
+
+		}
+
+		// Angle around the Y axis, counter-clockwise when looking from above.
+
+		function azimuth( vector ) {
+
+			return Math.atan2( vector.z, - vector.x );
+
+		}
+
+
+		// Angle above the XZ plane.
+
+		function inclination( vector ) {
+
+			return Math.atan2( - vector.y, Math.sqrt( ( vector.x * vector.x ) + ( vector.z * vector.z ) ) );
+
+		}
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	static fromJSON( data ) {
+
+		return new PolyhedronGeometry( data.vertices, data.indices, data.radius, data.details );
+
+	}
+
+}
+
+class DodecahedronGeometry extends PolyhedronGeometry {
+
+	constructor( radius = 1, detail = 0 ) {
+
+		const t = ( 1 + Math.sqrt( 5 ) ) / 2;
+		const r = 1 / t;
+
+		const vertices = [
+
+			// (±1, ±1, ±1)
+			- 1, - 1, - 1,	- 1, - 1, 1,
+			- 1, 1, - 1, - 1, 1, 1,
+			1, - 1, - 1, 1, - 1, 1,
+			1, 1, - 1, 1, 1, 1,
+
+			// (0, ±1/φ, ±φ)
+			0, - r, - t, 0, - r, t,
+			0, r, - t, 0, r, t,
+
+			// (±1/φ, ±φ, 0)
+			- r, - t, 0, - r, t, 0,
+			r, - t, 0, r, t, 0,
+
+			// (±φ, 0, ±1/φ)
+			- t, 0, - r, t, 0, - r,
+			- t, 0, r, t, 0, r
+		];
+
+		const indices = [
+			3, 11, 7, 	3, 7, 15, 	3, 15, 13,
+			7, 19, 17, 	7, 17, 6, 	7, 6, 15,
+			17, 4, 8, 	17, 8, 10, 	17, 10, 6,
+			8, 0, 16, 	8, 16, 2, 	8, 2, 10,
+			0, 12, 1, 	0, 1, 18, 	0, 18, 16,
+			6, 10, 2, 	6, 2, 13, 	6, 13, 15,
+			2, 16, 18, 	2, 18, 3, 	2, 3, 13,
+			18, 1, 9, 	18, 9, 11, 	18, 11, 3,
+			4, 14, 12, 	4, 12, 0, 	4, 0, 8,
+			11, 9, 5, 	11, 5, 19, 	11, 19, 7,
+			19, 5, 14, 	19, 14, 4, 	19, 4, 17,
+			1, 12, 14, 	1, 14, 5, 	1, 5, 9
+		];
+
+		super( vertices, indices, radius, detail );
+
+		this.type = 'DodecahedronGeometry';
+
+		this.parameters = {
+			radius: radius,
+			detail: detail
+		};
+
+	}
+
+	static fromJSON( data ) {
+
+		return new DodecahedronGeometry( data.radius, data.detail );
+
+	}
+
+}
+
+const _v0 = /*@__PURE__*/ new Vector3();
+const _v1$1 = /*@__PURE__*/ new Vector3();
+const _normal = /*@__PURE__*/ new Vector3();
+const _triangle = /*@__PURE__*/ new Triangle();
+
+class EdgesGeometry extends BufferGeometry {
+
+	constructor( geometry = null, thresholdAngle = 1 ) {
+
+		super();
+
+		this.type = 'EdgesGeometry';
+
+		this.parameters = {
+			geometry: geometry,
+			thresholdAngle: thresholdAngle
+		};
+
+		if ( geometry !== null ) {
+
+			const precisionPoints = 4;
+			const precision = Math.pow( 10, precisionPoints );
+			const thresholdDot = Math.cos( DEG2RAD * thresholdAngle );
+
+			const indexAttr = geometry.getIndex();
+			const positionAttr = geometry.getAttribute( 'position' );
+			const indexCount = indexAttr ? indexAttr.count : positionAttr.count;
+
+			const indexArr = [ 0, 0, 0 ];
+			const vertKeys = [ 'a', 'b', 'c' ];
+			const hashes = new Array( 3 );
+
+			const edgeData = {};
+			const vertices = [];
+			for ( let i = 0; i < indexCount; i += 3 ) {
+
+				if ( indexAttr ) {
+
+					indexArr[ 0 ] = indexAttr.getX( i );
+					indexArr[ 1 ] = indexAttr.getX( i + 1 );
+					indexArr[ 2 ] = indexAttr.getX( i + 2 );
+
+				} else {
+
+					indexArr[ 0 ] = i;
+					indexArr[ 1 ] = i + 1;
+					indexArr[ 2 ] = i + 2;
+
+				}
+
+				const { a, b, c } = _triangle;
+				a.fromBufferAttribute( positionAttr, indexArr[ 0 ] );
+				b.fromBufferAttribute( positionAttr, indexArr[ 1 ] );
+				c.fromBufferAttribute( positionAttr, indexArr[ 2 ] );
+				_triangle.getNormal( _normal );
+
+				// create hashes for the edge from the vertices
+				hashes[ 0 ] = `${ Math.round( a.x * precision ) },${ Math.round( a.y * precision ) },${ Math.round( a.z * precision ) }`;
+				hashes[ 1 ] = `${ Math.round( b.x * precision ) },${ Math.round( b.y * precision ) },${ Math.round( b.z * precision ) }`;
+				hashes[ 2 ] = `${ Math.round( c.x * precision ) },${ Math.round( c.y * precision ) },${ Math.round( c.z * precision ) }`;
+
+				// skip degenerate triangles
+				if ( hashes[ 0 ] === hashes[ 1 ] || hashes[ 1 ] === hashes[ 2 ] || hashes[ 2 ] === hashes[ 0 ] ) {
+
+					continue;
+
+				}
+
+				// iterate over every edge
+				for ( let j = 0; j < 3; j ++ ) {
+
+					// get the first and next vertex making up the edge
+					const jNext = ( j + 1 ) % 3;
+					const vecHash0 = hashes[ j ];
+					const vecHash1 = hashes[ jNext ];
+					const v0 = _triangle[ vertKeys[ j ] ];
+					const v1 = _triangle[ vertKeys[ jNext ] ];
+
+					const hash = `${ vecHash0 }_${ vecHash1 }`;
+					const reverseHash = `${ vecHash1 }_${ vecHash0 }`;
+
+					if ( reverseHash in edgeData && edgeData[ reverseHash ] ) {
+
+						// if we found a sibling edge add it into the vertex array if
+						// it meets the angle threshold and delete the edge from the map.
+						if ( _normal.dot( edgeData[ reverseHash ].normal ) <= thresholdDot ) {
+
+							vertices.push( v0.x, v0.y, v0.z );
+							vertices.push( v1.x, v1.y, v1.z );
+
+						}
+
+						edgeData[ reverseHash ] = null;
+
+					} else if ( ! ( hash in edgeData ) ) {
+
+						// if we've already got an edge here then skip adding a new one
+						edgeData[ hash ] = {
+
+							index0: indexArr[ j ],
+							index1: indexArr[ jNext ],
+							normal: _normal.clone(),
+
+						};
+
+					}
+
+				}
+
+			}
+
+			// iterate over all remaining, unmatched edges and add them to the vertex array
+			for ( const key in edgeData ) {
+
+				if ( edgeData[ key ] ) {
+
+					const { index0, index1 } = edgeData[ key ];
+					_v0.fromBufferAttribute( positionAttr, index0 );
+					_v1$1.fromBufferAttribute( positionAttr, index1 );
+
+					vertices.push( _v0.x, _v0.y, _v0.z );
+					vertices.push( _v1$1.x, _v1$1.y, _v1$1.z );
+
+				}
+
+			}
+
+			this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+
+		}
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+}
+
+class Shape extends Path {
+
+	constructor( points ) {
+
+		super( points );
+
+		this.uuid = generateUUID();
+
+		this.type = 'Shape';
+
+		this.holes = [];
+
+	}
+
+	getPointsHoles( divisions ) {
+
+		const holesPts = [];
+
+		for ( let i = 0, l = this.holes.length; i < l; i ++ ) {
+
+			holesPts[ i ] = this.holes[ i ].getPoints( divisions );
+
+		}
+
+		return holesPts;
+
+	}
+
+	// get points of shape and holes (keypoints based on segments parameter)
+
+	extractPoints( divisions ) {
+
+		return {
+
+			shape: this.getPoints( divisions ),
+			holes: this.getPointsHoles( divisions )
+
+		};
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.holes = [];
+
+		for ( let i = 0, l = source.holes.length; i < l; i ++ ) {
+
+			const hole = source.holes[ i ];
+
+			this.holes.push( hole.clone() );
+
+		}
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.uuid = this.uuid;
+		data.holes = [];
+
+		for ( let i = 0, l = this.holes.length; i < l; i ++ ) {
+
+			const hole = this.holes[ i ];
+			data.holes.push( hole.toJSON() );
+
+		}
+
+		return data;
+
+	}
+
+	fromJSON( json ) {
+
+		super.fromJSON( json );
+
+		this.uuid = json.uuid;
+		this.holes = [];
+
+		for ( let i = 0, l = json.holes.length; i < l; i ++ ) {
+
+			const hole = json.holes[ i ];
+			this.holes.push( new Path().fromJSON( hole ) );
+
+		}
+
+		return this;
+
+	}
+
+}
+
+/**
+ * Port from https://github.com/mapbox/earcut (v2.2.4)
+ */
+
+const Earcut = {
+
+	triangulate: function ( data, holeIndices, dim = 2 ) {
+
+		const hasHoles = holeIndices && holeIndices.length;
+		const outerLen = hasHoles ? holeIndices[ 0 ] * dim : data.length;
+		let outerNode = linkedList( data, 0, outerLen, dim, true );
+		const triangles = [];
+
+		if ( ! outerNode || outerNode.next === outerNode.prev ) return triangles;
+
+		let minX, minY, maxX, maxY, x, y, invSize;
+
+		if ( hasHoles ) outerNode = eliminateHoles( data, holeIndices, outerNode, dim );
+
+		// if the shape is not too simple, we'll use z-order curve hash later; calculate polygon bbox
+		if ( data.length > 80 * dim ) {
+
+			minX = maxX = data[ 0 ];
+			minY = maxY = data[ 1 ];
+
+			for ( let i = dim; i < outerLen; i += dim ) {
+
+				x = data[ i ];
+				y = data[ i + 1 ];
+				if ( x < minX ) minX = x;
+				if ( y < minY ) minY = y;
+				if ( x > maxX ) maxX = x;
+				if ( y > maxY ) maxY = y;
+
+			}
+
+			// minX, minY and invSize are later used to transform coords into integers for z-order calculation
+			invSize = Math.max( maxX - minX, maxY - minY );
+			invSize = invSize !== 0 ? 32767 / invSize : 0;
+
+		}
+
+		earcutLinked( outerNode, triangles, dim, minX, minY, invSize, 0 );
+
+		return triangles;
+
+	}
+
+};
+
+// create a circular doubly linked list from polygon points in the specified winding order
+function linkedList( data, start, end, dim, clockwise ) {
+
+	let i, last;
+
+	if ( clockwise === ( signedArea( data, start, end, dim ) > 0 ) ) {
+
+		for ( i = start; i < end; i += dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );
+
+	} else {
+
+		for ( i = end - dim; i >= start; i -= dim ) last = insertNode( i, data[ i ], data[ i + 1 ], last );
+
+	}
+
+	if ( last && equals( last, last.next ) ) {
+
+		removeNode( last );
+		last = last.next;
+
+	}
+
+	return last;
+
+}
+
+// eliminate colinear or duplicate points
+function filterPoints( start, end ) {
+
+	if ( ! start ) return start;
+	if ( ! end ) end = start;
+
+	let p = start,
+		again;
+	do {
+
+		again = false;
+
+		if ( ! p.steiner && ( equals( p, p.next ) || area( p.prev, p, p.next ) === 0 ) ) {
+
+			removeNode( p );
+			p = end = p.prev;
+			if ( p === p.next ) break;
+			again = true;
+
+		} else {
+
+			p = p.next;
+
+		}
+
+	} while ( again || p !== end );
+
+	return end;
+
+}
+
+// main ear slicing loop which triangulates a polygon (given as a linked list)
+function earcutLinked( ear, triangles, dim, minX, minY, invSize, pass ) {
+
+	if ( ! ear ) return;
+
+	// interlink polygon nodes in z-order
+	if ( ! pass && invSize ) indexCurve( ear, minX, minY, invSize );
+
+	let stop = ear,
+		prev, next;
+
+	// iterate through ears, slicing them one by one
+	while ( ear.prev !== ear.next ) {
+
+		prev = ear.prev;
+		next = ear.next;
+
+		if ( invSize ? isEarHashed( ear, minX, minY, invSize ) : isEar( ear ) ) {
+
+			// cut off the triangle
+			triangles.push( prev.i / dim | 0 );
+			triangles.push( ear.i / dim | 0 );
+			triangles.push( next.i / dim | 0 );
+
+			removeNode( ear );
+
+			// skipping the next vertex leads to less sliver triangles
+			ear = next.next;
+			stop = next.next;
+
+			continue;
+
+		}
+
+		ear = next;
+
+		// if we looped through the whole remaining polygon and can't find any more ears
+		if ( ear === stop ) {
+
+			// try filtering points and slicing again
+			if ( ! pass ) {
+
+				earcutLinked( filterPoints( ear ), triangles, dim, minX, minY, invSize, 1 );
+
+				// if this didn't work, try curing all small self-intersections locally
+
+			} else if ( pass === 1 ) {
+
+				ear = cureLocalIntersections( filterPoints( ear ), triangles, dim );
+				earcutLinked( ear, triangles, dim, minX, minY, invSize, 2 );
+
+				// as a last resort, try splitting the remaining polygon into two
+
+			} else if ( pass === 2 ) {
+
+				splitEarcut( ear, triangles, dim, minX, minY, invSize );
+
+			}
+
+			break;
+
+		}
+
+	}
+
+}
+
+// check whether a polygon node forms a valid ear with adjacent nodes
+function isEar( ear ) {
+
+	const a = ear.prev,
+		b = ear,
+		c = ear.next;
+
+	if ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear
+
+	// now make sure we don't have other points inside the potential ear
+	const ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;
+
+	// triangle bbox; min & max are calculated like this for speed
+	const x0 = ax < bx ? ( ax < cx ? ax : cx ) : ( bx < cx ? bx : cx ),
+		y0 = ay < by ? ( ay < cy ? ay : cy ) : ( by < cy ? by : cy ),
+		x1 = ax > bx ? ( ax > cx ? ax : cx ) : ( bx > cx ? bx : cx ),
+		y1 = ay > by ? ( ay > cy ? ay : cy ) : ( by > cy ? by : cy );
+
+	let p = c.next;
+	while ( p !== a ) {
+
+		if ( p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 &&
+			pointInTriangle( ax, ay, bx, by, cx, cy, p.x, p.y ) &&
+			area( p.prev, p, p.next ) >= 0 ) return false;
+		p = p.next;
+
+	}
+
+	return true;
+
+}
+
+function isEarHashed( ear, minX, minY, invSize ) {
+
+	const a = ear.prev,
+		b = ear,
+		c = ear.next;
+
+	if ( area( a, b, c ) >= 0 ) return false; // reflex, can't be an ear
+
+	const ax = a.x, bx = b.x, cx = c.x, ay = a.y, by = b.y, cy = c.y;
+
+	// triangle bbox; min & max are calculated like this for speed
+	const x0 = ax < bx ? ( ax < cx ? ax : cx ) : ( bx < cx ? bx : cx ),
+		y0 = ay < by ? ( ay < cy ? ay : cy ) : ( by < cy ? by : cy ),
+		x1 = ax > bx ? ( ax > cx ? ax : cx ) : ( bx > cx ? bx : cx ),
+		y1 = ay > by ? ( ay > cy ? ay : cy ) : ( by > cy ? by : cy );
+
+	// z-order range for the current triangle bbox;
+	const minZ = zOrder( x0, y0, minX, minY, invSize ),
+		maxZ = zOrder( x1, y1, minX, minY, invSize );
+
+	let p = ear.prevZ,
+		n = ear.nextZ;
+
+	// look for points inside the triangle in both directions
+	while ( p && p.z >= minZ && n && n.z <= maxZ ) {
+
+		if ( p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c &&
+			pointInTriangle( ax, ay, bx, by, cx, cy, p.x, p.y ) && area( p.prev, p, p.next ) >= 0 ) return false;
+		p = p.prevZ;
+
+		if ( n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c &&
+			pointInTriangle( ax, ay, bx, by, cx, cy, n.x, n.y ) && area( n.prev, n, n.next ) >= 0 ) return false;
+		n = n.nextZ;
+
+	}
+
+	// look for remaining points in decreasing z-order
+	while ( p && p.z >= minZ ) {
+
+		if ( p.x >= x0 && p.x <= x1 && p.y >= y0 && p.y <= y1 && p !== a && p !== c &&
+			pointInTriangle( ax, ay, bx, by, cx, cy, p.x, p.y ) && area( p.prev, p, p.next ) >= 0 ) return false;
+		p = p.prevZ;
+
+	}
+
+	// look for remaining points in increasing z-order
+	while ( n && n.z <= maxZ ) {
+
+		if ( n.x >= x0 && n.x <= x1 && n.y >= y0 && n.y <= y1 && n !== a && n !== c &&
+			pointInTriangle( ax, ay, bx, by, cx, cy, n.x, n.y ) && area( n.prev, n, n.next ) >= 0 ) return false;
+		n = n.nextZ;
+
+	}
+
+	return true;
+
+}
+
+// go through all polygon nodes and cure small local self-intersections
+function cureLocalIntersections( start, triangles, dim ) {
+
+	let p = start;
+	do {
+
+		const a = p.prev,
+			b = p.next.next;
+
+		if ( ! equals( a, b ) && intersects( a, p, p.next, b ) && locallyInside( a, b ) && locallyInside( b, a ) ) {
+
+			triangles.push( a.i / dim | 0 );
+			triangles.push( p.i / dim | 0 );
+			triangles.push( b.i / dim | 0 );
+
+			// remove two nodes involved
+			removeNode( p );
+			removeNode( p.next );
+
+			p = start = b;
+
+		}
+
+		p = p.next;
+
+	} while ( p !== start );
+
+	return filterPoints( p );
+
+}
+
+// try splitting polygon into two and triangulate them independently
+function splitEarcut( start, triangles, dim, minX, minY, invSize ) {
+
+	// look for a valid diagonal that divides the polygon into two
+	let a = start;
+	do {
+
+		let b = a.next.next;
+		while ( b !== a.prev ) {
+
+			if ( a.i !== b.i && isValidDiagonal( a, b ) ) {
+
+				// split the polygon in two by the diagonal
+				let c = splitPolygon( a, b );
+
+				// filter colinear points around the cuts
+				a = filterPoints( a, a.next );
+				c = filterPoints( c, c.next );
+
+				// run earcut on each half
+				earcutLinked( a, triangles, dim, minX, minY, invSize, 0 );
+				earcutLinked( c, triangles, dim, minX, minY, invSize, 0 );
+				return;
+
+			}
+
+			b = b.next;
+
+		}
+
+		a = a.next;
+
+	} while ( a !== start );
+
+}
+
+// link every hole into the outer loop, producing a single-ring polygon without holes
+function eliminateHoles( data, holeIndices, outerNode, dim ) {
+
+	const queue = [];
+	let i, len, start, end, list;
+
+	for ( i = 0, len = holeIndices.length; i < len; i ++ ) {
+
+		start = holeIndices[ i ] * dim;
+		end = i < len - 1 ? holeIndices[ i + 1 ] * dim : data.length;
+		list = linkedList( data, start, end, dim, false );
+		if ( list === list.next ) list.steiner = true;
+		queue.push( getLeftmost( list ) );
+
+	}
+
+	queue.sort( compareX );
+
+	// process holes from left to right
+	for ( i = 0; i < queue.length; i ++ ) {
+
+		outerNode = eliminateHole( queue[ i ], outerNode );
+
+	}
+
+	return outerNode;
+
+}
+
+function compareX( a, b ) {
+
+	return a.x - b.x;
+
+}
+
+// find a bridge between vertices that connects hole with an outer ring and link it
+function eliminateHole( hole, outerNode ) {
+
+	const bridge = findHoleBridge( hole, outerNode );
+	if ( ! bridge ) {
+
+		return outerNode;
+
+	}
+
+	const bridgeReverse = splitPolygon( bridge, hole );
+
+	// filter collinear points around the cuts
+	filterPoints( bridgeReverse, bridgeReverse.next );
+	return filterPoints( bridge, bridge.next );
+
+}
+
+// David Eberly's algorithm for finding a bridge between hole and outer polygon
+function findHoleBridge( hole, outerNode ) {
+
+	let p = outerNode,
+		qx = - Infinity,
+		m;
+
+	const hx = hole.x, hy = hole.y;
+
+	// find a segment intersected by a ray from the hole's leftmost point to the left;
+	// segment's endpoint with lesser x will be potential connection point
+	do {
+
+		if ( hy <= p.y && hy >= p.next.y && p.next.y !== p.y ) {
+
+			const x = p.x + ( hy - p.y ) * ( p.next.x - p.x ) / ( p.next.y - p.y );
+			if ( x <= hx && x > qx ) {
+
+				qx = x;
+				m = p.x < p.next.x ? p : p.next;
+				if ( x === hx ) return m; // hole touches outer segment; pick leftmost endpoint
+
+			}
+
+		}
+
+		p = p.next;
+
+	} while ( p !== outerNode );
+
+	if ( ! m ) return null;
+
+	// look for points inside the triangle of hole point, segment intersection and endpoint;
+	// if there are no points found, we have a valid connection;
+	// otherwise choose the point of the minimum angle with the ray as connection point
+
+	const stop = m,
+		mx = m.x,
+		my = m.y;
+	let tanMin = Infinity, tan;
+
+	p = m;
+
+	do {
+
+		if ( hx >= p.x && p.x >= mx && hx !== p.x &&
+				pointInTriangle( hy < my ? hx : qx, hy, mx, my, hy < my ? qx : hx, hy, p.x, p.y ) ) {
+
+			tan = Math.abs( hy - p.y ) / ( hx - p.x ); // tangential
+
+			if ( locallyInside( p, hole ) && ( tan < tanMin || ( tan === tanMin && ( p.x > m.x || ( p.x === m.x && sectorContainsSector( m, p ) ) ) ) ) ) {
+
+				m = p;
+				tanMin = tan;
+
+			}
+
+		}
+
+		p = p.next;
+
+	} while ( p !== stop );
+
+	return m;
+
+}
+
+// whether sector in vertex m contains sector in vertex p in the same coordinates
+function sectorContainsSector( m, p ) {
+
+	return area( m.prev, m, p.prev ) < 0 && area( p.next, m, m.next ) < 0;
+
+}
+
+// interlink polygon nodes in z-order
+function indexCurve( start, minX, minY, invSize ) {
+
+	let p = start;
+	do {
+
+		if ( p.z === 0 ) p.z = zOrder( p.x, p.y, minX, minY, invSize );
+		p.prevZ = p.prev;
+		p.nextZ = p.next;
+		p = p.next;
+
+	} while ( p !== start );
+
+	p.prevZ.nextZ = null;
+	p.prevZ = null;
+
+	sortLinked( p );
+
+}
+
+// Simon Tatham's linked list merge sort algorithm
+// http://www.chiark.greenend.org.uk/~sgtatham/algorithms/listsort.html
+function sortLinked( list ) {
+
+	let i, p, q, e, tail, numMerges, pSize, qSize,
+		inSize = 1;
+
+	do {
+
+		p = list;
+		list = null;
+		tail = null;
+		numMerges = 0;
+
+		while ( p ) {
+
+			numMerges ++;
+			q = p;
+			pSize = 0;
+			for ( i = 0; i < inSize; i ++ ) {
+
+				pSize ++;
+				q = q.nextZ;
+				if ( ! q ) break;
+
+			}
+
+			qSize = inSize;
+
+			while ( pSize > 0 || ( qSize > 0 && q ) ) {
+
+				if ( pSize !== 0 && ( qSize === 0 || ! q || p.z <= q.z ) ) {
+
+					e = p;
+					p = p.nextZ;
+					pSize --;
+
+				} else {
+
+					e = q;
+					q = q.nextZ;
+					qSize --;
+
+				}
+
+				if ( tail ) tail.nextZ = e;
+				else list = e;
+
+				e.prevZ = tail;
+				tail = e;
+
+			}
+
+			p = q;
+
+		}
+
+		tail.nextZ = null;
+		inSize *= 2;
+
+	} while ( numMerges > 1 );
+
+	return list;
+
+}
+
+// z-order of a point given coords and inverse of the longer side of data bbox
+function zOrder( x, y, minX, minY, invSize ) {
+
+	// coords are transformed into non-negative 15-bit integer range
+	x = ( x - minX ) * invSize | 0;
+	y = ( y - minY ) * invSize | 0;
+
+	x = ( x | ( x << 8 ) ) & 0x00FF00FF;
+	x = ( x | ( x << 4 ) ) & 0x0F0F0F0F;
+	x = ( x | ( x << 2 ) ) & 0x33333333;
+	x = ( x | ( x << 1 ) ) & 0x55555555;
+
+	y = ( y | ( y << 8 ) ) & 0x00FF00FF;
+	y = ( y | ( y << 4 ) ) & 0x0F0F0F0F;
+	y = ( y | ( y << 2 ) ) & 0x33333333;
+	y = ( y | ( y << 1 ) ) & 0x55555555;
+
+	return x | ( y << 1 );
+
+}
+
+// find the leftmost node of a polygon ring
+function getLeftmost( start ) {
+
+	let p = start,
+		leftmost = start;
+	do {
+
+		if ( p.x < leftmost.x || ( p.x === leftmost.x && p.y < leftmost.y ) ) leftmost = p;
+		p = p.next;
+
+	} while ( p !== start );
+
+	return leftmost;
+
+}
+
+// check if a point lies within a convex triangle
+function pointInTriangle( ax, ay, bx, by, cx, cy, px, py ) {
+
+	return ( cx - px ) * ( ay - py ) >= ( ax - px ) * ( cy - py ) &&
+           ( ax - px ) * ( by - py ) >= ( bx - px ) * ( ay - py ) &&
+           ( bx - px ) * ( cy - py ) >= ( cx - px ) * ( by - py );
+
+}
+
+// check if a diagonal between two polygon nodes is valid (lies in polygon interior)
+function isValidDiagonal( a, b ) {
+
+	return a.next.i !== b.i && a.prev.i !== b.i && ! intersectsPolygon( a, b ) && // dones't intersect other edges
+           ( locallyInside( a, b ) && locallyInside( b, a ) && middleInside( a, b ) && // locally visible
+            ( area( a.prev, a, b.prev ) || area( a, b.prev, b ) ) || // does not create opposite-facing sectors
+            equals( a, b ) && area( a.prev, a, a.next ) > 0 && area( b.prev, b, b.next ) > 0 ); // special zero-length case
+
+}
+
+// signed area of a triangle
+function area( p, q, r ) {
+
+	return ( q.y - p.y ) * ( r.x - q.x ) - ( q.x - p.x ) * ( r.y - q.y );
+
+}
+
+// check if two points are equal
+function equals( p1, p2 ) {
+
+	return p1.x === p2.x && p1.y === p2.y;
+
+}
+
+// check if two segments intersect
+function intersects( p1, q1, p2, q2 ) {
+
+	const o1 = sign( area( p1, q1, p2 ) );
+	const o2 = sign( area( p1, q1, q2 ) );
+	const o3 = sign( area( p2, q2, p1 ) );
+	const o4 = sign( area( p2, q2, q1 ) );
+
+	if ( o1 !== o2 && o3 !== o4 ) return true; // general case
+
+	if ( o1 === 0 && onSegment( p1, p2, q1 ) ) return true; // p1, q1 and p2 are collinear and p2 lies on p1q1
+	if ( o2 === 0 && onSegment( p1, q2, q1 ) ) return true; // p1, q1 and q2 are collinear and q2 lies on p1q1
+	if ( o3 === 0 && onSegment( p2, p1, q2 ) ) return true; // p2, q2 and p1 are collinear and p1 lies on p2q2
+	if ( o4 === 0 && onSegment( p2, q1, q2 ) ) return true; // p2, q2 and q1 are collinear and q1 lies on p2q2
+
+	return false;
+
+}
+
+// for collinear points p, q, r, check if point q lies on segment pr
+function onSegment( p, q, r ) {
+
+	return q.x <= Math.max( p.x, r.x ) && q.x >= Math.min( p.x, r.x ) && q.y <= Math.max( p.y, r.y ) && q.y >= Math.min( p.y, r.y );
+
+}
+
+function sign( num ) {
+
+	return num > 0 ? 1 : num < 0 ? - 1 : 0;
+
+}
+
+// check if a polygon diagonal intersects any polygon segments
+function intersectsPolygon( a, b ) {
+
+	let p = a;
+	do {
+
+		if ( p.i !== a.i && p.next.i !== a.i && p.i !== b.i && p.next.i !== b.i &&
+			intersects( p, p.next, a, b ) ) return true;
+		p = p.next;
+
+	} while ( p !== a );
+
+	return false;
+
+}
+
+// check if a polygon diagonal is locally inside the polygon
+function locallyInside( a, b ) {
+
+	return area( a.prev, a, a.next ) < 0 ?
+		area( a, b, a.next ) >= 0 && area( a, a.prev, b ) >= 0 :
+		area( a, b, a.prev ) < 0 || area( a, a.next, b ) < 0;
+
+}
+
+// check if the middle point of a polygon diagonal is inside the polygon
+function middleInside( a, b ) {
+
+	let p = a,
+		inside = false;
+	const px = ( a.x + b.x ) / 2,
+		py = ( a.y + b.y ) / 2;
+	do {
+
+		if ( ( ( p.y > py ) !== ( p.next.y > py ) ) && p.next.y !== p.y &&
+			( px < ( p.next.x - p.x ) * ( py - p.y ) / ( p.next.y - p.y ) + p.x ) )
+			inside = ! inside;
+		p = p.next;
+
+	} while ( p !== a );
+
+	return inside;
+
+}
+
+// link two polygon vertices with a bridge; if the vertices belong to the same ring, it splits polygon into two;
+// if one belongs to the outer ring and another to a hole, it merges it into a single ring
+function splitPolygon( a, b ) {
+
+	const a2 = new Node( a.i, a.x, a.y ),
+		b2 = new Node( b.i, b.x, b.y ),
+		an = a.next,
+		bp = b.prev;
+
+	a.next = b;
+	b.prev = a;
+
+	a2.next = an;
+	an.prev = a2;
+
+	b2.next = a2;
+	a2.prev = b2;
+
+	bp.next = b2;
+	b2.prev = bp;
+
+	return b2;
+
+}
+
+// create a node and optionally link it with previous one (in a circular doubly linked list)
+function insertNode( i, x, y, last ) {
+
+	const p = new Node( i, x, y );
+
+	if ( ! last ) {
+
+		p.prev = p;
+		p.next = p;
+
+	} else {
+
+		p.next = last.next;
+		p.prev = last;
+		last.next.prev = p;
+		last.next = p;
+
+	}
+
+	return p;
+
+}
+
+function removeNode( p ) {
+
+	p.next.prev = p.prev;
+	p.prev.next = p.next;
+
+	if ( p.prevZ ) p.prevZ.nextZ = p.nextZ;
+	if ( p.nextZ ) p.nextZ.prevZ = p.prevZ;
+
+}
+
+function Node( i, x, y ) {
+
+	// vertex index in coordinates array
+	this.i = i;
+
+	// vertex coordinates
+	this.x = x;
+	this.y = y;
+
+	// previous and next vertex nodes in a polygon ring
+	this.prev = null;
+	this.next = null;
+
+	// z-order curve value
+	this.z = 0;
+
+	// previous and next nodes in z-order
+	this.prevZ = null;
+	this.nextZ = null;
+
+	// indicates whether this is a steiner point
+	this.steiner = false;
+
+}
+
+function signedArea( data, start, end, dim ) {
+
+	let sum = 0;
+	for ( let i = start, j = end - dim; i < end; i += dim ) {
+
+		sum += ( data[ j ] - data[ i ] ) * ( data[ i + 1 ] + data[ j + 1 ] );
+		j = i;
+
+	}
+
+	return sum;
+
+}
+
+class ShapeUtils {
+
+	// calculate area of the contour polygon
+
+	static area( contour ) {
+
+		const n = contour.length;
+		let a = 0.0;
+
+		for ( let p = n - 1, q = 0; q < n; p = q ++ ) {
+
+			a += contour[ p ].x * contour[ q ].y - contour[ q ].x * contour[ p ].y;
+
+		}
+
+		return a * 0.5;
+
+	}
+
+	static isClockWise( pts ) {
+
+		return ShapeUtils.area( pts ) < 0;
+
+	}
+
+	static triangulateShape( contour, holes ) {
+
+		const vertices = []; // flat array of vertices like [ x0,y0, x1,y1, x2,y2, ... ]
+		const holeIndices = []; // array of hole indices
+		const faces = []; // final array of vertex indices like [ [ a,b,d ], [ b,c,d ] ]
+
+		removeDupEndPts( contour );
+		addContour( vertices, contour );
+
+		//
+
+		let holeIndex = contour.length;
+
+		holes.forEach( removeDupEndPts );
+
+		for ( let i = 0; i < holes.length; i ++ ) {
+
+			holeIndices.push( holeIndex );
+			holeIndex += holes[ i ].length;
+			addContour( vertices, holes[ i ] );
+
+		}
+
+		//
+
+		const triangles = Earcut.triangulate( vertices, holeIndices );
+
+		//
+
+		for ( let i = 0; i < triangles.length; i += 3 ) {
+
+			faces.push( triangles.slice( i, i + 3 ) );
+
+		}
+
+		return faces;
+
+	}
+
+}
+
+function removeDupEndPts( points ) {
+
+	const l = points.length;
+
+	if ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {
+
+		points.pop();
+
+	}
+
+}
+
+function addContour( vertices, contour ) {
+
+	for ( let i = 0; i < contour.length; i ++ ) {
+
+		vertices.push( contour[ i ].x );
+		vertices.push( contour[ i ].y );
+
+	}
+
+}
+
+/**
+ * Creates extruded geometry from a path shape.
+ *
+ * parameters = {
+ *
+ *  curveSegments: <int>, // number of points on the curves
+ *  steps: <int>, // number of points for z-side extrusions / used for subdividing segments of extrude spline too
+ *  depth: <float>, // Depth to extrude the shape
+ *
+ *  bevelEnabled: <bool>, // turn on bevel
+ *  bevelThickness: <float>, // how deep into the original shape bevel goes
+ *  bevelSize: <float>, // how far from shape outline (including bevelOffset) is bevel
+ *  bevelOffset: <float>, // how far from shape outline does bevel start
+ *  bevelSegments: <int>, // number of bevel layers
+ *
+ *  extrudePath: <THREE.Curve> // curve to extrude shape along
+ *
+ *  UVGenerator: <Object> // object that provides UV generator functions
+ *
+ * }
+ */
+
+
+class ExtrudeGeometry extends BufferGeometry {
+
+	constructor( shapes = new Shape( [ new Vector2( 0.5, 0.5 ), new Vector2( - 0.5, 0.5 ), new Vector2( - 0.5, - 0.5 ), new Vector2( 0.5, - 0.5 ) ] ), options = {} ) {
+
+		super();
+
+		this.type = 'ExtrudeGeometry';
+
+		this.parameters = {
+			shapes: shapes,
+			options: options
+		};
+
+		shapes = Array.isArray( shapes ) ? shapes : [ shapes ];
+
+		const scope = this;
+
+		const verticesArray = [];
+		const uvArray = [];
+
+		for ( let i = 0, l = shapes.length; i < l; i ++ ) {
+
+			const shape = shapes[ i ];
+			addShape( shape );
+
+		}
+
+		// build geometry
+
+		this.setAttribute( 'position', new Float32BufferAttribute( verticesArray, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvArray, 2 ) );
+
+		this.computeVertexNormals();
+
+		// functions
+
+		function addShape( shape ) {
+
+			const placeholder = [];
+
+			// options
+
+			const curveSegments = options.curveSegments !== undefined ? options.curveSegments : 12;
+			const steps = options.steps !== undefined ? options.steps : 1;
+			const depth = options.depth !== undefined ? options.depth : 1;
+
+			let bevelEnabled = options.bevelEnabled !== undefined ? options.bevelEnabled : true;
+			let bevelThickness = options.bevelThickness !== undefined ? options.bevelThickness : 0.2;
+			let bevelSize = options.bevelSize !== undefined ? options.bevelSize : bevelThickness - 0.1;
+			let bevelOffset = options.bevelOffset !== undefined ? options.bevelOffset : 0;
+			let bevelSegments = options.bevelSegments !== undefined ? options.bevelSegments : 3;
+
+			const extrudePath = options.extrudePath;
+
+			const uvgen = options.UVGenerator !== undefined ? options.UVGenerator : WorldUVGenerator;
+
+			//
+
+			let extrudePts, extrudeByPath = false;
+			let splineTube, binormal, normal, position2;
+
+			if ( extrudePath ) {
+
+				extrudePts = extrudePath.getSpacedPoints( steps );
+
+				extrudeByPath = true;
+				bevelEnabled = false; // bevels not supported for path extrusion
+
+				// SETUP TNB variables
+
+				// TODO1 - have a .isClosed in spline?
+
+				splineTube = extrudePath.computeFrenetFrames( steps, false );
+
+				// console.log(splineTube, 'splineTube', splineTube.normals.length, 'steps', steps, 'extrudePts', extrudePts.length);
+
+				binormal = new Vector3();
+				normal = new Vector3();
+				position2 = new Vector3();
+
+			}
+
+			// Safeguards if bevels are not enabled
+
+			if ( ! bevelEnabled ) {
+
+				bevelSegments = 0;
+				bevelThickness = 0;
+				bevelSize = 0;
+				bevelOffset = 0;
+
+			}
+
+			// Variables initialization
+
+			const shapePoints = shape.extractPoints( curveSegments );
+
+			let vertices = shapePoints.shape;
+			const holes = shapePoints.holes;
+
+			const reverse = ! ShapeUtils.isClockWise( vertices );
+
+			if ( reverse ) {
+
+				vertices = vertices.reverse();
+
+				// Maybe we should also check if holes are in the opposite direction, just to be safe ...
+
+				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
+
+					const ahole = holes[ h ];
+
+					if ( ShapeUtils.isClockWise( ahole ) ) {
+
+						holes[ h ] = ahole.reverse();
+
+					}
+
+				}
+
+			}
+
+
+			const faces = ShapeUtils.triangulateShape( vertices, holes );
+
+			/* Vertices */
+
+			const contour = vertices; // vertices has all points but contour has only points of circumference
+
+			for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
+
+				const ahole = holes[ h ];
+
+				vertices = vertices.concat( ahole );
+
+			}
+
+
+			function scalePt2( pt, vec, size ) {
+
+				if ( ! vec ) console.error( 'THREE.ExtrudeGeometry: vec does not exist' );
+
+				return pt.clone().addScaledVector( vec, size );
+
+			}
+
+			const vlen = vertices.length, flen = faces.length;
+
+
+			// Find directions for point movement
+
+
+			function getBevelVec( inPt, inPrev, inNext ) {
+
+				// computes for inPt the corresponding point inPt' on a new contour
+				//   shifted by 1 unit (length of normalized vector) to the left
+				// if we walk along contour clockwise, this new contour is outside the old one
+				//
+				// inPt' is the intersection of the two lines parallel to the two
+				//  adjacent edges of inPt at a distance of 1 unit on the left side.
+
+				let v_trans_x, v_trans_y, shrink_by; // resulting translation vector for inPt
+
+				// good reading for geometry algorithms (here: line-line intersection)
+				// http://geomalgorithms.com/a05-_intersect-1.html
+
+				const v_prev_x = inPt.x - inPrev.x,
+					v_prev_y = inPt.y - inPrev.y;
+				const v_next_x = inNext.x - inPt.x,
+					v_next_y = inNext.y - inPt.y;
+
+				const v_prev_lensq = ( v_prev_x * v_prev_x + v_prev_y * v_prev_y );
+
+				// check for collinear edges
+				const collinear0 = ( v_prev_x * v_next_y - v_prev_y * v_next_x );
+
+				if ( Math.abs( collinear0 ) > Number.EPSILON ) {
+
+					// not collinear
+
+					// length of vectors for normalizing
+
+					const v_prev_len = Math.sqrt( v_prev_lensq );
+					const v_next_len = Math.sqrt( v_next_x * v_next_x + v_next_y * v_next_y );
+
+					// shift adjacent points by unit vectors to the left
+
+					const ptPrevShift_x = ( inPrev.x - v_prev_y / v_prev_len );
+					const ptPrevShift_y = ( inPrev.y + v_prev_x / v_prev_len );
+
+					const ptNextShift_x = ( inNext.x - v_next_y / v_next_len );
+					const ptNextShift_y = ( inNext.y + v_next_x / v_next_len );
+
+					// scaling factor for v_prev to intersection point
+
+					const sf = ( ( ptNextShift_x - ptPrevShift_x ) * v_next_y -
+							( ptNextShift_y - ptPrevShift_y ) * v_next_x ) /
+						( v_prev_x * v_next_y - v_prev_y * v_next_x );
+
+					// vector from inPt to intersection point
+
+					v_trans_x = ( ptPrevShift_x + v_prev_x * sf - inPt.x );
+					v_trans_y = ( ptPrevShift_y + v_prev_y * sf - inPt.y );
+
+					// Don't normalize!, otherwise sharp corners become ugly
+					//  but prevent crazy spikes
+					const v_trans_lensq = ( v_trans_x * v_trans_x + v_trans_y * v_trans_y );
+					if ( v_trans_lensq <= 2 ) {
+
+						return new Vector2( v_trans_x, v_trans_y );
+
+					} else {
+
+						shrink_by = Math.sqrt( v_trans_lensq / 2 );
+
+					}
+
+				} else {
+
+					// handle special case of collinear edges
+
+					let direction_eq = false; // assumes: opposite
+
+					if ( v_prev_x > Number.EPSILON ) {
+
+						if ( v_next_x > Number.EPSILON ) {
+
+							direction_eq = true;
+
+						}
+
+					} else {
+
+						if ( v_prev_x < - Number.EPSILON ) {
+
+							if ( v_next_x < - Number.EPSILON ) {
+
+								direction_eq = true;
+
+							}
+
+						} else {
+
+							if ( Math.sign( v_prev_y ) === Math.sign( v_next_y ) ) {
+
+								direction_eq = true;
+
+							}
+
+						}
+
+					}
+
+					if ( direction_eq ) {
+
+						// console.log("Warning: lines are a straight sequence");
+						v_trans_x = - v_prev_y;
+						v_trans_y = v_prev_x;
+						shrink_by = Math.sqrt( v_prev_lensq );
+
+					} else {
+
+						// console.log("Warning: lines are a straight spike");
+						v_trans_x = v_prev_x;
+						v_trans_y = v_prev_y;
+						shrink_by = Math.sqrt( v_prev_lensq / 2 );
+
+					}
+
+				}
+
+				return new Vector2( v_trans_x / shrink_by, v_trans_y / shrink_by );
+
+			}
+
+
+			const contourMovements = [];
+
+			for ( let i = 0, il = contour.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {
+
+				if ( j === il ) j = 0;
+				if ( k === il ) k = 0;
+
+				//  (j)---(i)---(k)
+				// console.log('i,j,k', i, j , k)
+
+				contourMovements[ i ] = getBevelVec( contour[ i ], contour[ j ], contour[ k ] );
+
+			}
+
+			const holesMovements = [];
+			let oneHoleMovements, verticesMovements = contourMovements.concat();
+
+			for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
+
+				const ahole = holes[ h ];
+
+				oneHoleMovements = [];
+
+				for ( let i = 0, il = ahole.length, j = il - 1, k = i + 1; i < il; i ++, j ++, k ++ ) {
+
+					if ( j === il ) j = 0;
+					if ( k === il ) k = 0;
+
+					//  (j)---(i)---(k)
+					oneHoleMovements[ i ] = getBevelVec( ahole[ i ], ahole[ j ], ahole[ k ] );
+
+				}
+
+				holesMovements.push( oneHoleMovements );
+				verticesMovements = verticesMovements.concat( oneHoleMovements );
+
+			}
+
+
+			// Loop bevelSegments, 1 for the front, 1 for the back
+
+			for ( let b = 0; b < bevelSegments; b ++ ) {
+
+				//for ( b = bevelSegments; b > 0; b -- ) {
+
+				const t = b / bevelSegments;
+				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
+				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;
+
+				// contract shape
+
+				for ( let i = 0, il = contour.length; i < il; i ++ ) {
+
+					const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
+
+					v( vert.x, vert.y, - z );
+
+				}
+
+				// expand holes
+
+				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
+
+					const ahole = holes[ h ];
+					oneHoleMovements = holesMovements[ h ];
+
+					for ( let i = 0, il = ahole.length; i < il; i ++ ) {
+
+						const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );
+
+						v( vert.x, vert.y, - z );
+
+					}
+
+				}
+
+			}
+
+			const bs = bevelSize + bevelOffset;
+
+			// Back facing vertices
+
+			for ( let i = 0; i < vlen; i ++ ) {
+
+				const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];
+
+				if ( ! extrudeByPath ) {
+
+					v( vert.x, vert.y, 0 );
+
+				} else {
+
+					// v( vert.x, vert.y + extrudePts[ 0 ].y, extrudePts[ 0 ].x );
+
+					normal.copy( splineTube.normals[ 0 ] ).multiplyScalar( vert.x );
+					binormal.copy( splineTube.binormals[ 0 ] ).multiplyScalar( vert.y );
+
+					position2.copy( extrudePts[ 0 ] ).add( normal ).add( binormal );
+
+					v( position2.x, position2.y, position2.z );
+
+				}
+
+			}
+
+			// Add stepped vertices...
+			// Including front facing vertices
+
+			for ( let s = 1; s <= steps; s ++ ) {
+
+				for ( let i = 0; i < vlen; i ++ ) {
+
+					const vert = bevelEnabled ? scalePt2( vertices[ i ], verticesMovements[ i ], bs ) : vertices[ i ];
+
+					if ( ! extrudeByPath ) {
+
+						v( vert.x, vert.y, depth / steps * s );
+
+					} else {
+
+						// v( vert.x, vert.y + extrudePts[ s - 1 ].y, extrudePts[ s - 1 ].x );
+
+						normal.copy( splineTube.normals[ s ] ).multiplyScalar( vert.x );
+						binormal.copy( splineTube.binormals[ s ] ).multiplyScalar( vert.y );
+
+						position2.copy( extrudePts[ s ] ).add( normal ).add( binormal );
+
+						v( position2.x, position2.y, position2.z );
+
+					}
+
+				}
+
+			}
+
+
+			// Add bevel segments planes
+
+			//for ( b = 1; b <= bevelSegments; b ++ ) {
+			for ( let b = bevelSegments - 1; b >= 0; b -- ) {
+
+				const t = b / bevelSegments;
+				const z = bevelThickness * Math.cos( t * Math.PI / 2 );
+				const bs = bevelSize * Math.sin( t * Math.PI / 2 ) + bevelOffset;
+
+				// contract shape
+
+				for ( let i = 0, il = contour.length; i < il; i ++ ) {
+
+					const vert = scalePt2( contour[ i ], contourMovements[ i ], bs );
+					v( vert.x, vert.y, depth + z );
+
+				}
+
+				// expand holes
+
+				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
+
+					const ahole = holes[ h ];
+					oneHoleMovements = holesMovements[ h ];
+
+					for ( let i = 0, il = ahole.length; i < il; i ++ ) {
+
+						const vert = scalePt2( ahole[ i ], oneHoleMovements[ i ], bs );
+
+						if ( ! extrudeByPath ) {
+
+							v( vert.x, vert.y, depth + z );
+
+						} else {
+
+							v( vert.x, vert.y + extrudePts[ steps - 1 ].y, extrudePts[ steps - 1 ].x + z );
+
+						}
+
+					}
+
+				}
+
+			}
+
+			/* Faces */
+
+			// Top and bottom faces
+
+			buildLidFaces();
+
+			// Sides faces
+
+			buildSideFaces();
+
+
+			/////  Internal functions
+
+			function buildLidFaces() {
+
+				const start = verticesArray.length / 3;
+
+				if ( bevelEnabled ) {
+
+					let layer = 0; // steps + 1
+					let offset = vlen * layer;
+
+					// Bottom faces
+
+					for ( let i = 0; i < flen; i ++ ) {
+
+						const face = faces[ i ];
+						f3( face[ 2 ] + offset, face[ 1 ] + offset, face[ 0 ] + offset );
+
+					}
+
+					layer = steps + bevelSegments * 2;
+					offset = vlen * layer;
+
+					// Top faces
+
+					for ( let i = 0; i < flen; i ++ ) {
+
+						const face = faces[ i ];
+						f3( face[ 0 ] + offset, face[ 1 ] + offset, face[ 2 ] + offset );
+
+					}
+
+				} else {
+
+					// Bottom faces
+
+					for ( let i = 0; i < flen; i ++ ) {
+
+						const face = faces[ i ];
+						f3( face[ 2 ], face[ 1 ], face[ 0 ] );
+
+					}
+
+					// Top faces
+
+					for ( let i = 0; i < flen; i ++ ) {
+
+						const face = faces[ i ];
+						f3( face[ 0 ] + vlen * steps, face[ 1 ] + vlen * steps, face[ 2 ] + vlen * steps );
+
+					}
+
+				}
+
+				scope.addGroup( start, verticesArray.length / 3 - start, 0 );
+
+			}
+
+			// Create faces for the z-sides of the shape
+
+			function buildSideFaces() {
+
+				const start = verticesArray.length / 3;
+				let layeroffset = 0;
+				sidewalls( contour, layeroffset );
+				layeroffset += contour.length;
+
+				for ( let h = 0, hl = holes.length; h < hl; h ++ ) {
+
+					const ahole = holes[ h ];
+					sidewalls( ahole, layeroffset );
+
+					//, true
+					layeroffset += ahole.length;
+
+				}
+
+
+				scope.addGroup( start, verticesArray.length / 3 - start, 1 );
+
+
+			}
+
+			function sidewalls( contour, layeroffset ) {
+
+				let i = contour.length;
+
+				while ( -- i >= 0 ) {
+
+					const j = i;
+					let k = i - 1;
+					if ( k < 0 ) k = contour.length - 1;
+
+					//console.log('b', i,j, i-1, k,vertices.length);
+
+					for ( let s = 0, sl = ( steps + bevelSegments * 2 ); s < sl; s ++ ) {
+
+						const slen1 = vlen * s;
+						const slen2 = vlen * ( s + 1 );
+
+						const a = layeroffset + j + slen1,
+							b = layeroffset + k + slen1,
+							c = layeroffset + k + slen2,
+							d = layeroffset + j + slen2;
+
+						f4( a, b, c, d );
+
+					}
+
+				}
+
+			}
+
+			function v( x, y, z ) {
+
+				placeholder.push( x );
+				placeholder.push( y );
+				placeholder.push( z );
+
+			}
+
+
+			function f3( a, b, c ) {
+
+				addVertex( a );
+				addVertex( b );
+				addVertex( c );
+
+				const nextIndex = verticesArray.length / 3;
+				const uvs = uvgen.generateTopUV( scope, verticesArray, nextIndex - 3, nextIndex - 2, nextIndex - 1 );
+
+				addUV( uvs[ 0 ] );
+				addUV( uvs[ 1 ] );
+				addUV( uvs[ 2 ] );
+
+			}
+
+			function f4( a, b, c, d ) {
+
+				addVertex( a );
+				addVertex( b );
+				addVertex( d );
+
+				addVertex( b );
+				addVertex( c );
+				addVertex( d );
+
+
+				const nextIndex = verticesArray.length / 3;
+				const uvs = uvgen.generateSideWallUV( scope, verticesArray, nextIndex - 6, nextIndex - 3, nextIndex - 2, nextIndex - 1 );
+
+				addUV( uvs[ 0 ] );
+				addUV( uvs[ 1 ] );
+				addUV( uvs[ 3 ] );
+
+				addUV( uvs[ 1 ] );
+				addUV( uvs[ 2 ] );
+				addUV( uvs[ 3 ] );
+
+			}
+
+			function addVertex( index ) {
+
+				verticesArray.push( placeholder[ index * 3 + 0 ] );
+				verticesArray.push( placeholder[ index * 3 + 1 ] );
+				verticesArray.push( placeholder[ index * 3 + 2 ] );
+
+			}
+
+
+			function addUV( vector2 ) {
+
+				uvArray.push( vector2.x );
+				uvArray.push( vector2.y );
+
+			}
+
+		}
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		const shapes = this.parameters.shapes;
+		const options = this.parameters.options;
+
+		return toJSON$1( shapes, options, data );
+
+	}
+
+	static fromJSON( data, shapes ) {
+
+		const geometryShapes = [];
+
+		for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {
+
+			const shape = shapes[ data.shapes[ j ] ];
+
+			geometryShapes.push( shape );
+
+		}
+
+		const extrudePath = data.options.extrudePath;
+
+		if ( extrudePath !== undefined ) {
+
+			data.options.extrudePath = new Curves[ extrudePath.type ]().fromJSON( extrudePath );
+
+		}
+
+		return new ExtrudeGeometry( geometryShapes, data.options );
+
+	}
+
+}
+
+const WorldUVGenerator = {
+
+	generateTopUV: function ( geometry, vertices, indexA, indexB, indexC ) {
+
+		const a_x = vertices[ indexA * 3 ];
+		const a_y = vertices[ indexA * 3 + 1 ];
+		const b_x = vertices[ indexB * 3 ];
+		const b_y = vertices[ indexB * 3 + 1 ];
+		const c_x = vertices[ indexC * 3 ];
+		const c_y = vertices[ indexC * 3 + 1 ];
+
+		return [
+			new Vector2( a_x, a_y ),
+			new Vector2( b_x, b_y ),
+			new Vector2( c_x, c_y )
+		];
+
+	},
+
+	generateSideWallUV: function ( geometry, vertices, indexA, indexB, indexC, indexD ) {
+
+		const a_x = vertices[ indexA * 3 ];
+		const a_y = vertices[ indexA * 3 + 1 ];
+		const a_z = vertices[ indexA * 3 + 2 ];
+		const b_x = vertices[ indexB * 3 ];
+		const b_y = vertices[ indexB * 3 + 1 ];
+		const b_z = vertices[ indexB * 3 + 2 ];
+		const c_x = vertices[ indexC * 3 ];
+		const c_y = vertices[ indexC * 3 + 1 ];
+		const c_z = vertices[ indexC * 3 + 2 ];
+		const d_x = vertices[ indexD * 3 ];
+		const d_y = vertices[ indexD * 3 + 1 ];
+		const d_z = vertices[ indexD * 3 + 2 ];
+
+		if ( Math.abs( a_y - b_y ) < Math.abs( a_x - b_x ) ) {
+
+			return [
+				new Vector2( a_x, 1 - a_z ),
+				new Vector2( b_x, 1 - b_z ),
+				new Vector2( c_x, 1 - c_z ),
+				new Vector2( d_x, 1 - d_z )
+			];
+
+		} else {
+
+			return [
+				new Vector2( a_y, 1 - a_z ),
+				new Vector2( b_y, 1 - b_z ),
+				new Vector2( c_y, 1 - c_z ),
+				new Vector2( d_y, 1 - d_z )
+			];
+
+		}
+
+	}
+
+};
+
+function toJSON$1( shapes, options, data ) {
+
+	data.shapes = [];
+
+	if ( Array.isArray( shapes ) ) {
+
+		for ( let i = 0, l = shapes.length; i < l; i ++ ) {
+
+			const shape = shapes[ i ];
+
+			data.shapes.push( shape.uuid );
+
+		}
+
+	} else {
+
+		data.shapes.push( shapes.uuid );
+
+	}
+
+	data.options = Object.assign( {}, options );
+
+	if ( options.extrudePath !== undefined ) data.options.extrudePath = options.extrudePath.toJSON();
+
+	return data;
+
+}
+
+class IcosahedronGeometry extends PolyhedronGeometry {
+
+	constructor( radius = 1, detail = 0 ) {
+
+		const t = ( 1 + Math.sqrt( 5 ) ) / 2;
+
+		const vertices = [
+			- 1, t, 0, 	1, t, 0, 	- 1, - t, 0, 	1, - t, 0,
+			0, - 1, t, 	0, 1, t,	0, - 1, - t, 	0, 1, - t,
+			t, 0, - 1, 	t, 0, 1, 	- t, 0, - 1, 	- t, 0, 1
+		];
+
+		const indices = [
+			0, 11, 5, 	0, 5, 1, 	0, 1, 7, 	0, 7, 10, 	0, 10, 11,
+			1, 5, 9, 	5, 11, 4,	11, 10, 2,	10, 7, 6,	7, 1, 8,
+			3, 9, 4, 	3, 4, 2,	3, 2, 6,	3, 6, 8,	3, 8, 9,
+			4, 9, 5, 	2, 4, 11,	6, 2, 10,	8, 6, 7,	9, 8, 1
+		];
+
+		super( vertices, indices, radius, detail );
+
+		this.type = 'IcosahedronGeometry';
+
+		this.parameters = {
+			radius: radius,
+			detail: detail
+		};
+
+	}
+
+	static fromJSON( data ) {
+
+		return new IcosahedronGeometry( data.radius, data.detail );
+
+	}
+
+}
+
+class OctahedronGeometry extends PolyhedronGeometry {
+
+	constructor( radius = 1, detail = 0 ) {
+
+		const vertices = [
+			1, 0, 0, 	- 1, 0, 0,	0, 1, 0,
+			0, - 1, 0, 	0, 0, 1,	0, 0, - 1
+		];
+
+		const indices = [
+			0, 2, 4,	0, 4, 3,	0, 3, 5,
+			0, 5, 2,	1, 2, 5,	1, 5, 3,
+			1, 3, 4,	1, 4, 2
+		];
+
+		super( vertices, indices, radius, detail );
+
+		this.type = 'OctahedronGeometry';
+
+		this.parameters = {
+			radius: radius,
+			detail: detail
+		};
+
+	}
+
+	static fromJSON( data ) {
+
+		return new OctahedronGeometry( data.radius, data.detail );
+
+	}
+
+}
+
+class RingGeometry extends BufferGeometry {
+
+	constructor( innerRadius = 0.5, outerRadius = 1, thetaSegments = 32, phiSegments = 1, thetaStart = 0, thetaLength = Math.PI * 2 ) {
+
+		super();
+
+		this.type = 'RingGeometry';
+
+		this.parameters = {
+			innerRadius: innerRadius,
+			outerRadius: outerRadius,
+			thetaSegments: thetaSegments,
+			phiSegments: phiSegments,
+			thetaStart: thetaStart,
+			thetaLength: thetaLength
+		};
+
+		thetaSegments = Math.max( 3, thetaSegments );
+		phiSegments = Math.max( 1, phiSegments );
+
+		// buffers
+
+		const indices = [];
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+
+		// some helper variables
+
+		let radius = innerRadius;
+		const radiusStep = ( ( outerRadius - innerRadius ) / phiSegments );
+		const vertex = new Vector3();
+		const uv = new Vector2();
+
+		// generate vertices, normals and uvs
+
+		for ( let j = 0; j <= phiSegments; j ++ ) {
+
+			for ( let i = 0; i <= thetaSegments; i ++ ) {
+
+				// values are generate from the inside of the ring to the outside
+
+				const segment = thetaStart + i / thetaSegments * thetaLength;
+
+				// vertex
+
+				vertex.x = radius * Math.cos( segment );
+				vertex.y = radius * Math.sin( segment );
+
+				vertices.push( vertex.x, vertex.y, vertex.z );
+
+				// normal
+
+				normals.push( 0, 0, 1 );
+
+				// uv
+
+				uv.x = ( vertex.x / outerRadius + 1 ) / 2;
+				uv.y = ( vertex.y / outerRadius + 1 ) / 2;
+
+				uvs.push( uv.x, uv.y );
+
+			}
+
+			// increase the radius for next row of vertices
+
+			radius += radiusStep;
+
+		}
+
+		// indices
+
+		for ( let j = 0; j < phiSegments; j ++ ) {
+
+			const thetaSegmentLevel = j * ( thetaSegments + 1 );
+
+			for ( let i = 0; i < thetaSegments; i ++ ) {
+
+				const segment = i + thetaSegmentLevel;
+
+				const a = segment;
+				const b = segment + thetaSegments + 1;
+				const c = segment + thetaSegments + 2;
+				const d = segment + 1;
+
+				// faces
+
+				indices.push( a, b, d );
+				indices.push( b, c, d );
+
+			}
+
+		}
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	static fromJSON( data ) {
+
+		return new RingGeometry( data.innerRadius, data.outerRadius, data.thetaSegments, data.phiSegments, data.thetaStart, data.thetaLength );
+
+	}
+
+}
+
+class ShapeGeometry extends BufferGeometry {
+
+	constructor( shapes = new Shape( [ new Vector2( 0, 0.5 ), new Vector2( - 0.5, - 0.5 ), new Vector2( 0.5, - 0.5 ) ] ), curveSegments = 12 ) {
+
+		super();
+
+		this.type = 'ShapeGeometry';
+
+		this.parameters = {
+			shapes: shapes,
+			curveSegments: curveSegments
+		};
+
+		// buffers
+
+		const indices = [];
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+
+		// helper variables
+
+		let groupStart = 0;
+		let groupCount = 0;
+
+		// allow single and array values for "shapes" parameter
+
+		if ( Array.isArray( shapes ) === false ) {
+
+			addShape( shapes );
+
+		} else {
+
+			for ( let i = 0; i < shapes.length; i ++ ) {
+
+				addShape( shapes[ i ] );
+
+				this.addGroup( groupStart, groupCount, i ); // enables MultiMaterial support
+
+				groupStart += groupCount;
+				groupCount = 0;
+
+			}
+
+		}
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+
+		// helper functions
+
+		function addShape( shape ) {
+
+			const indexOffset = vertices.length / 3;
+			const points = shape.extractPoints( curveSegments );
+
+			let shapeVertices = points.shape;
+			const shapeHoles = points.holes;
+
+			// check direction of vertices
+
+			if ( ShapeUtils.isClockWise( shapeVertices ) === false ) {
+
+				shapeVertices = shapeVertices.reverse();
+
+			}
+
+			for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {
+
+				const shapeHole = shapeHoles[ i ];
+
+				if ( ShapeUtils.isClockWise( shapeHole ) === true ) {
+
+					shapeHoles[ i ] = shapeHole.reverse();
+
+				}
+
+			}
+
+			const faces = ShapeUtils.triangulateShape( shapeVertices, shapeHoles );
+
+			// join vertices of inner and outer paths to a single array
+
+			for ( let i = 0, l = shapeHoles.length; i < l; i ++ ) {
+
+				const shapeHole = shapeHoles[ i ];
+				shapeVertices = shapeVertices.concat( shapeHole );
+
+			}
+
+			// vertices, normals, uvs
+
+			for ( let i = 0, l = shapeVertices.length; i < l; i ++ ) {
+
+				const vertex = shapeVertices[ i ];
+
+				vertices.push( vertex.x, vertex.y, 0 );
+				normals.push( 0, 0, 1 );
+				uvs.push( vertex.x, vertex.y ); // world uvs
+
+			}
+
+			// indices
+
+			for ( let i = 0, l = faces.length; i < l; i ++ ) {
+
+				const face = faces[ i ];
+
+				const a = face[ 0 ] + indexOffset;
+				const b = face[ 1 ] + indexOffset;
+				const c = face[ 2 ] + indexOffset;
+
+				indices.push( a, b, c );
+				groupCount += 3;
+
+			}
+
+		}
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		const shapes = this.parameters.shapes;
+
+		return toJSON( shapes, data );
+
+	}
+
+	static fromJSON( data, shapes ) {
+
+		const geometryShapes = [];
+
+		for ( let j = 0, jl = data.shapes.length; j < jl; j ++ ) {
+
+			const shape = shapes[ data.shapes[ j ] ];
+
+			geometryShapes.push( shape );
+
+		}
+
+		return new ShapeGeometry( geometryShapes, data.curveSegments );
+
+	}
+
+}
+
+function toJSON( shapes, data ) {
+
+	data.shapes = [];
+
+	if ( Array.isArray( shapes ) ) {
+
+		for ( let i = 0, l = shapes.length; i < l; i ++ ) {
+
+			const shape = shapes[ i ];
+
+			data.shapes.push( shape.uuid );
+
+		}
+
+	} else {
+
+		data.shapes.push( shapes.uuid );
+
+	}
+
+	return data;
+
+}
+
+class SphereGeometry extends BufferGeometry {
+
+	constructor( radius = 1, widthSegments = 32, heightSegments = 16, phiStart = 0, phiLength = Math.PI * 2, thetaStart = 0, thetaLength = Math.PI ) {
+
+		super();
+
+		this.type = 'SphereGeometry';
+
+		this.parameters = {
+			radius: radius,
+			widthSegments: widthSegments,
+			heightSegments: heightSegments,
+			phiStart: phiStart,
+			phiLength: phiLength,
+			thetaStart: thetaStart,
+			thetaLength: thetaLength
+		};
+
+		widthSegments = Math.max( 3, Math.floor( widthSegments ) );
+		heightSegments = Math.max( 2, Math.floor( heightSegments ) );
+
+		const thetaEnd = Math.min( thetaStart + thetaLength, Math.PI );
+
+		let index = 0;
+		const grid = [];
+
+		const vertex = new Vector3();
+		const normal = new Vector3();
+
+		// buffers
+
+		const indices = [];
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+
+		// generate vertices, normals and uvs
+
+		for ( let iy = 0; iy <= heightSegments; iy ++ ) {
+
+			const verticesRow = [];
+
+			const v = iy / heightSegments;
+
+			// special case for the poles
+
+			let uOffset = 0;
+
+			if ( iy === 0 && thetaStart === 0 ) {
+
+				uOffset = 0.5 / widthSegments;
+
+			} else if ( iy === heightSegments && thetaEnd === Math.PI ) {
+
+				uOffset = - 0.5 / widthSegments;
+
+			}
+
+			for ( let ix = 0; ix <= widthSegments; ix ++ ) {
+
+				const u = ix / widthSegments;
+
+				// vertex
+
+				vertex.x = - radius * Math.cos( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
+				vertex.y = radius * Math.cos( thetaStart + v * thetaLength );
+				vertex.z = radius * Math.sin( phiStart + u * phiLength ) * Math.sin( thetaStart + v * thetaLength );
+
+				vertices.push( vertex.x, vertex.y, vertex.z );
+
+				// normal
+
+				normal.copy( vertex ).normalize();
+				normals.push( normal.x, normal.y, normal.z );
+
+				// uv
+
+				uvs.push( u + uOffset, 1 - v );
+
+				verticesRow.push( index ++ );
+
+			}
+
+			grid.push( verticesRow );
+
+		}
+
+		// indices
+
+		for ( let iy = 0; iy < heightSegments; iy ++ ) {
+
+			for ( let ix = 0; ix < widthSegments; ix ++ ) {
+
+				const a = grid[ iy ][ ix + 1 ];
+				const b = grid[ iy ][ ix ];
+				const c = grid[ iy + 1 ][ ix ];
+				const d = grid[ iy + 1 ][ ix + 1 ];
+
+				if ( iy !== 0 || thetaStart > 0 ) indices.push( a, b, d );
+				if ( iy !== heightSegments - 1 || thetaEnd < Math.PI ) indices.push( b, c, d );
+
+			}
+
+		}
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	static fromJSON( data ) {
+
+		return new SphereGeometry( data.radius, data.widthSegments, data.heightSegments, data.phiStart, data.phiLength, data.thetaStart, data.thetaLength );
+
+	}
+
+}
+
+class TetrahedronGeometry extends PolyhedronGeometry {
+
+	constructor( radius = 1, detail = 0 ) {
+
+		const vertices = [
+			1, 1, 1, 	- 1, - 1, 1, 	- 1, 1, - 1, 	1, - 1, - 1
+		];
+
+		const indices = [
+			2, 1, 0, 	0, 3, 2,	1, 3, 0,	2, 3, 1
+		];
+
+		super( vertices, indices, radius, detail );
+
+		this.type = 'TetrahedronGeometry';
+
+		this.parameters = {
+			radius: radius,
+			detail: detail
+		};
+
+	}
+
+	static fromJSON( data ) {
+
+		return new TetrahedronGeometry( data.radius, data.detail );
+
+	}
+
+}
+
+class TorusGeometry extends BufferGeometry {
+
+	constructor( radius = 1, tube = 0.4, radialSegments = 12, tubularSegments = 48, arc = Math.PI * 2 ) {
+
+		super();
+
+		this.type = 'TorusGeometry';
+
+		this.parameters = {
+			radius: radius,
+			tube: tube,
+			radialSegments: radialSegments,
+			tubularSegments: tubularSegments,
+			arc: arc
+		};
+
+		radialSegments = Math.floor( radialSegments );
+		tubularSegments = Math.floor( tubularSegments );
+
+		// buffers
+
+		const indices = [];
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+
+		// helper variables
+
+		const center = new Vector3();
+		const vertex = new Vector3();
+		const normal = new Vector3();
+
+		// generate vertices, normals and uvs
+
+		for ( let j = 0; j <= radialSegments; j ++ ) {
+
+			for ( let i = 0; i <= tubularSegments; i ++ ) {
+
+				const u = i / tubularSegments * arc;
+				const v = j / radialSegments * Math.PI * 2;
+
+				// vertex
+
+				vertex.x = ( radius + tube * Math.cos( v ) ) * Math.cos( u );
+				vertex.y = ( radius + tube * Math.cos( v ) ) * Math.sin( u );
+				vertex.z = tube * Math.sin( v );
+
+				vertices.push( vertex.x, vertex.y, vertex.z );
+
+				// normal
+
+				center.x = radius * Math.cos( u );
+				center.y = radius * Math.sin( u );
+				normal.subVectors( vertex, center ).normalize();
+
+				normals.push( normal.x, normal.y, normal.z );
+
+				// uv
+
+				uvs.push( i / tubularSegments );
+				uvs.push( j / radialSegments );
+
+			}
+
+		}
+
+		// generate indices
+
+		for ( let j = 1; j <= radialSegments; j ++ ) {
+
+			for ( let i = 1; i <= tubularSegments; i ++ ) {
+
+				// indices
+
+				const a = ( tubularSegments + 1 ) * j + i - 1;
+				const b = ( tubularSegments + 1 ) * ( j - 1 ) + i - 1;
+				const c = ( tubularSegments + 1 ) * ( j - 1 ) + i;
+				const d = ( tubularSegments + 1 ) * j + i;
+
+				// faces
+
+				indices.push( a, b, d );
+				indices.push( b, c, d );
+
+			}
+
+		}
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	static fromJSON( data ) {
+
+		return new TorusGeometry( data.radius, data.tube, data.radialSegments, data.tubularSegments, data.arc );
+
+	}
+
+}
+
+class TorusKnotGeometry extends BufferGeometry {
+
+	constructor( radius = 1, tube = 0.4, tubularSegments = 64, radialSegments = 8, p = 2, q = 3 ) {
+
+		super();
+
+		this.type = 'TorusKnotGeometry';
+
+		this.parameters = {
+			radius: radius,
+			tube: tube,
+			tubularSegments: tubularSegments,
+			radialSegments: radialSegments,
+			p: p,
+			q: q
+		};
+
+		tubularSegments = Math.floor( tubularSegments );
+		radialSegments = Math.floor( radialSegments );
+
+		// buffers
+
+		const indices = [];
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+
+		// helper variables
+
+		const vertex = new Vector3();
+		const normal = new Vector3();
+
+		const P1 = new Vector3();
+		const P2 = new Vector3();
+
+		const B = new Vector3();
+		const T = new Vector3();
+		const N = new Vector3();
+
+		// generate vertices, normals and uvs
+
+		for ( let i = 0; i <= tubularSegments; ++ i ) {
+
+			// the radian "u" is used to calculate the position on the torus curve of the current tubular segment
+
+			const u = i / tubularSegments * p * Math.PI * 2;
+
+			// now we calculate two points. P1 is our current position on the curve, P2 is a little farther ahead.
+			// these points are used to create a special "coordinate space", which is necessary to calculate the correct vertex positions
+
+			calculatePositionOnCurve( u, p, q, radius, P1 );
+			calculatePositionOnCurve( u + 0.01, p, q, radius, P2 );
+
+			// calculate orthonormal basis
+
+			T.subVectors( P2, P1 );
+			N.addVectors( P2, P1 );
+			B.crossVectors( T, N );
+			N.crossVectors( B, T );
+
+			// normalize B, N. T can be ignored, we don't use it
+
+			B.normalize();
+			N.normalize();
+
+			for ( let j = 0; j <= radialSegments; ++ j ) {
+
+				// now calculate the vertices. they are nothing more than an extrusion of the torus curve.
+				// because we extrude a shape in the xy-plane, there is no need to calculate a z-value.
+
+				const v = j / radialSegments * Math.PI * 2;
+				const cx = - tube * Math.cos( v );
+				const cy = tube * Math.sin( v );
+
+				// now calculate the final vertex position.
+				// first we orient the extrusion with our basis vectors, then we add it to the current position on the curve
+
+				vertex.x = P1.x + ( cx * N.x + cy * B.x );
+				vertex.y = P1.y + ( cx * N.y + cy * B.y );
+				vertex.z = P1.z + ( cx * N.z + cy * B.z );
+
+				vertices.push( vertex.x, vertex.y, vertex.z );
+
+				// normal (P1 is always the center/origin of the extrusion, thus we can use it to calculate the normal)
+
+				normal.subVectors( vertex, P1 ).normalize();
+
+				normals.push( normal.x, normal.y, normal.z );
+
+				// uv
+
+				uvs.push( i / tubularSegments );
+				uvs.push( j / radialSegments );
+
+			}
+
+		}
+
+		// generate indices
+
+		for ( let j = 1; j <= tubularSegments; j ++ ) {
+
+			for ( let i = 1; i <= radialSegments; i ++ ) {
+
+				// indices
+
+				const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
+				const b = ( radialSegments + 1 ) * j + ( i - 1 );
+				const c = ( radialSegments + 1 ) * j + i;
+				const d = ( radialSegments + 1 ) * ( j - 1 ) + i;
+
+				// faces
+
+				indices.push( a, b, d );
+				indices.push( b, c, d );
+
+			}
+
+		}
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+		// this function calculates the current position on the torus curve
+
+		function calculatePositionOnCurve( u, p, q, radius, position ) {
+
+			const cu = Math.cos( u );
+			const su = Math.sin( u );
+			const quOverP = q / p * u;
+			const cs = Math.cos( quOverP );
+
+			position.x = radius * ( 2 + cs ) * 0.5 * cu;
+			position.y = radius * ( 2 + cs ) * su * 0.5;
+			position.z = radius * Math.sin( quOverP ) * 0.5;
+
+		}
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	static fromJSON( data ) {
+
+		return new TorusKnotGeometry( data.radius, data.tube, data.tubularSegments, data.radialSegments, data.p, data.q );
+
+	}
+
+}
+
+class TubeGeometry extends BufferGeometry {
+
+	constructor( path = new QuadraticBezierCurve3( new Vector3( - 1, - 1, 0 ), new Vector3( - 1, 1, 0 ), new Vector3( 1, 1, 0 ) ), tubularSegments = 64, radius = 1, radialSegments = 8, closed = false ) {
+
+		super();
+
+		this.type = 'TubeGeometry';
+
+		this.parameters = {
+			path: path,
+			tubularSegments: tubularSegments,
+			radius: radius,
+			radialSegments: radialSegments,
+			closed: closed
+		};
+
+		const frames = path.computeFrenetFrames( tubularSegments, closed );
+
+		// expose internals
+
+		this.tangents = frames.tangents;
+		this.normals = frames.normals;
+		this.binormals = frames.binormals;
+
+		// helper variables
+
+		const vertex = new Vector3();
+		const normal = new Vector3();
+		const uv = new Vector2();
+		let P = new Vector3();
+
+		// buffer
+
+		const vertices = [];
+		const normals = [];
+		const uvs = [];
+		const indices = [];
+
+		// create buffer data
+
+		generateBufferData();
+
+		// build geometry
+
+		this.setIndex( indices );
+		this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		this.setAttribute( 'normal', new Float32BufferAttribute( normals, 3 ) );
+		this.setAttribute( 'uv', new Float32BufferAttribute( uvs, 2 ) );
+
+		// functions
+
+		function generateBufferData() {
+
+			for ( let i = 0; i < tubularSegments; i ++ ) {
+
+				generateSegment( i );
+
+			}
+
+			// if the geometry is not closed, generate the last row of vertices and normals
+			// at the regular position on the given path
+			//
+			// if the geometry is closed, duplicate the first row of vertices and normals (uvs will differ)
+
+			generateSegment( ( closed === false ) ? tubularSegments : 0 );
+
+			// uvs are generated in a separate function.
+			// this makes it easy compute correct values for closed geometries
+
+			generateUVs();
+
+			// finally create faces
+
+			generateIndices();
+
+		}
+
+		function generateSegment( i ) {
+
+			// we use getPointAt to sample evenly distributed points from the given path
+
+			P = path.getPointAt( i / tubularSegments, P );
+
+			// retrieve corresponding normal and binormal
+
+			const N = frames.normals[ i ];
+			const B = frames.binormals[ i ];
+
+			// generate normals and vertices for the current segment
+
+			for ( let j = 0; j <= radialSegments; j ++ ) {
+
+				const v = j / radialSegments * Math.PI * 2;
+
+				const sin = Math.sin( v );
+				const cos = - Math.cos( v );
+
+				// normal
+
+				normal.x = ( cos * N.x + sin * B.x );
+				normal.y = ( cos * N.y + sin * B.y );
+				normal.z = ( cos * N.z + sin * B.z );
+				normal.normalize();
+
+				normals.push( normal.x, normal.y, normal.z );
+
+				// vertex
+
+				vertex.x = P.x + radius * normal.x;
+				vertex.y = P.y + radius * normal.y;
+				vertex.z = P.z + radius * normal.z;
+
+				vertices.push( vertex.x, vertex.y, vertex.z );
+
+			}
+
+		}
+
+		function generateIndices() {
+
+			for ( let j = 1; j <= tubularSegments; j ++ ) {
+
+				for ( let i = 1; i <= radialSegments; i ++ ) {
+
+					const a = ( radialSegments + 1 ) * ( j - 1 ) + ( i - 1 );
+					const b = ( radialSegments + 1 ) * j + ( i - 1 );
+					const c = ( radialSegments + 1 ) * j + i;
+					const d = ( radialSegments + 1 ) * ( j - 1 ) + i;
+
+					// faces
+
+					indices.push( a, b, d );
+					indices.push( b, c, d );
+
+				}
+
+			}
+
+		}
+
+		function generateUVs() {
+
+			for ( let i = 0; i <= tubularSegments; i ++ ) {
+
+				for ( let j = 0; j <= radialSegments; j ++ ) {
+
+					uv.x = i / tubularSegments;
+					uv.y = j / radialSegments;
+
+					uvs.push( uv.x, uv.y );
+
+				}
+
+			}
+
+		}
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.path = this.parameters.path.toJSON();
+
+		return data;
+
+	}
+
+	static fromJSON( data ) {
+
+		// This only works for built-in curves (e.g. CatmullRomCurve3).
+		// User defined curves or instances of CurvePath will not be deserialized.
+		return new TubeGeometry(
+			new Curves[ data.path.type ]().fromJSON( data.path ),
+			data.tubularSegments,
+			data.radius,
+			data.radialSegments,
+			data.closed
+		);
+
+	}
+
+}
+
+class WireframeGeometry extends BufferGeometry {
+
+	constructor( geometry = null ) {
+
+		super();
+
+		this.type = 'WireframeGeometry';
+
+		this.parameters = {
+			geometry: geometry
+		};
+
+		if ( geometry !== null ) {
+
+			// buffer
+
+			const vertices = [];
+			const edges = new Set();
+
+			// helper variables
+
+			const start = new Vector3();
+			const end = new Vector3();
+
+			if ( geometry.index !== null ) {
+
+				// indexed BufferGeometry
+
+				const position = geometry.attributes.position;
+				const indices = geometry.index;
+				let groups = geometry.groups;
+
+				if ( groups.length === 0 ) {
+
+					groups = [ { start: 0, count: indices.count, materialIndex: 0 } ];
+
+				}
+
+				// create a data structure that contains all edges without duplicates
+
+				for ( let o = 0, ol = groups.length; o < ol; ++ o ) {
+
+					const group = groups[ o ];
+
+					const groupStart = group.start;
+					const groupCount = group.count;
+
+					for ( let i = groupStart, l = ( groupStart + groupCount ); i < l; i += 3 ) {
+
+						for ( let j = 0; j < 3; j ++ ) {
+
+							const index1 = indices.getX( i + j );
+							const index2 = indices.getX( i + ( j + 1 ) % 3 );
+
+							start.fromBufferAttribute( position, index1 );
+							end.fromBufferAttribute( position, index2 );
+
+							if ( isUniqueEdge( start, end, edges ) === true ) {
+
+								vertices.push( start.x, start.y, start.z );
+								vertices.push( end.x, end.y, end.z );
+
+							}
+
+						}
+
+					}
+
+				}
+
+			} else {
+
+				// non-indexed BufferGeometry
+
+				const position = geometry.attributes.position;
+
+				for ( let i = 0, l = ( position.count / 3 ); i < l; i ++ ) {
+
+					for ( let j = 0; j < 3; j ++ ) {
+
+						// three edges per triangle, an edge is represented as (index1, index2)
+						// e.g. the first triangle has the following edges: (0,1),(1,2),(2,0)
+
+						const index1 = 3 * i + j;
+						const index2 = 3 * i + ( ( j + 1 ) % 3 );
+
+						start.fromBufferAttribute( position, index1 );
+						end.fromBufferAttribute( position, index2 );
+
+						if ( isUniqueEdge( start, end, edges ) === true ) {
+
+							vertices.push( start.x, start.y, start.z );
+							vertices.push( end.x, end.y, end.z );
+
+						}
+
+					}
+
+				}
+
+			}
+
+			// build geometry
+
+			this.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+
+		}
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.parameters = Object.assign( {}, source.parameters );
+
+		return this;
+
+	}
+
+}
+
+function isUniqueEdge( start, end, edges ) {
+
+	const hash1 = `${start.x},${start.y},${start.z}-${end.x},${end.y},${end.z}`;
+	const hash2 = `${end.x},${end.y},${end.z}-${start.x},${start.y},${start.z}`; // coincident edge
+
+	if ( edges.has( hash1 ) === true || edges.has( hash2 ) === true ) {
+
+		return false;
+
+	} else {
+
+		edges.add( hash1 );
+		edges.add( hash2 );
+		return true;
+
+	}
+
+}
+
+var Geometries = /*#__PURE__*/Object.freeze({
+	__proto__: null,
+	BoxGeometry: BoxGeometry,
+	CapsuleGeometry: CapsuleGeometry,
+	CircleGeometry: CircleGeometry,
+	ConeGeometry: ConeGeometry,
+	CylinderGeometry: CylinderGeometry,
+	DodecahedronGeometry: DodecahedronGeometry,
+	EdgesGeometry: EdgesGeometry,
+	ExtrudeGeometry: ExtrudeGeometry,
+	IcosahedronGeometry: IcosahedronGeometry,
+	LatheGeometry: LatheGeometry,
+	OctahedronGeometry: OctahedronGeometry,
+	PlaneGeometry: PlaneGeometry,
+	PolyhedronGeometry: PolyhedronGeometry,
+	RingGeometry: RingGeometry,
+	ShapeGeometry: ShapeGeometry,
+	SphereGeometry: SphereGeometry,
+	TetrahedronGeometry: TetrahedronGeometry,
+	TorusGeometry: TorusGeometry,
+	TorusKnotGeometry: TorusKnotGeometry,
+	TubeGeometry: TubeGeometry,
+	WireframeGeometry: WireframeGeometry
+});
+
+class ShadowMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isShadowMaterial = true;
+
+		this.type = 'ShadowMaterial';
+
+		this.color = new Color( 0x000000 );
+		this.transparent = true;
+
+		this.fog = true;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.color.copy( source.color );
+
+		this.fog = source.fog;
+
+		return this;
+
+	}
+
+}
+
+class RawShaderMaterial extends ShaderMaterial {
+
+	constructor( parameters ) {
+
+		super( parameters );
+
+		this.isRawShaderMaterial = true;
+
+		this.type = 'RawShaderMaterial';
+
+	}
+
+}
+
+class MeshStandardMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshStandardMaterial = true;
+
+		this.defines = { 'STANDARD': '' };
+
+		this.type = 'MeshStandardMaterial';
+
+		this.color = new Color( 0xffffff ); // diffuse
+		this.roughness = 1.0;
+		this.metalness = 0.0;
+
+		this.map = null;
+
+		this.lightMap = null;
+		this.lightMapIntensity = 1.0;
+
+		this.aoMap = null;
+		this.aoMapIntensity = 1.0;
+
+		this.emissive = new Color( 0x000000 );
+		this.emissiveIntensity = 1.0;
+		this.emissiveMap = null;
+
+		this.bumpMap = null;
+		this.bumpScale = 1;
+
+		this.normalMap = null;
+		this.normalMapType = TangentSpaceNormalMap;
+		this.normalScale = new Vector2( 1, 1 );
+
+		this.displacementMap = null;
+		this.displacementScale = 1;
+		this.displacementBias = 0;
+
+		this.roughnessMap = null;
+
+		this.metalnessMap = null;
+
+		this.alphaMap = null;
+
+		this.envMap = null;
+		this.envMapRotation = new Euler();
+		this.envMapIntensity = 1.0;
+
+		this.wireframe = false;
+		this.wireframeLinewidth = 1;
+		this.wireframeLinecap = 'round';
+		this.wireframeLinejoin = 'round';
+
+		this.flatShading = false;
+
+		this.fog = true;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.defines = { 'STANDARD': '' };
+
+		this.color.copy( source.color );
+		this.roughness = source.roughness;
+		this.metalness = source.metalness;
+
+		this.map = source.map;
+
+		this.lightMap = source.lightMap;
+		this.lightMapIntensity = source.lightMapIntensity;
+
+		this.aoMap = source.aoMap;
+		this.aoMapIntensity = source.aoMapIntensity;
+
+		this.emissive.copy( source.emissive );
+		this.emissiveMap = source.emissiveMap;
+		this.emissiveIntensity = source.emissiveIntensity;
+
+		this.bumpMap = source.bumpMap;
+		this.bumpScale = source.bumpScale;
+
+		this.normalMap = source.normalMap;
+		this.normalMapType = source.normalMapType;
+		this.normalScale.copy( source.normalScale );
+
+		this.displacementMap = source.displacementMap;
+		this.displacementScale = source.displacementScale;
+		this.displacementBias = source.displacementBias;
+
+		this.roughnessMap = source.roughnessMap;
+
+		this.metalnessMap = source.metalnessMap;
+
+		this.alphaMap = source.alphaMap;
+
+		this.envMap = source.envMap;
+		this.envMapRotation.copy( source.envMapRotation );
+		this.envMapIntensity = source.envMapIntensity;
+
+		this.wireframe = source.wireframe;
+		this.wireframeLinewidth = source.wireframeLinewidth;
+		this.wireframeLinecap = source.wireframeLinecap;
+		this.wireframeLinejoin = source.wireframeLinejoin;
+
+		this.flatShading = source.flatShading;
+
+		this.fog = source.fog;
+
+		return this;
+
+	}
+
+}
+
+class MeshPhysicalMaterial extends MeshStandardMaterial {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshPhysicalMaterial = true;
+
+		this.defines = {
+
+			'STANDARD': '',
+			'PHYSICAL': ''
+
+		};
+
+		this.type = 'MeshPhysicalMaterial';
+
+		this.anisotropyRotation = 0;
+		this.anisotropyMap = null;
+
+		this.clearcoatMap = null;
+		this.clearcoatRoughness = 0.0;
+		this.clearcoatRoughnessMap = null;
+		this.clearcoatNormalScale = new Vector2( 1, 1 );
+		this.clearcoatNormalMap = null;
+
+		this.ior = 1.5;
+
+		Object.defineProperty( this, 'reflectivity', {
+			get: function () {
+
+				return ( clamp( 2.5 * ( this.ior - 1 ) / ( this.ior + 1 ), 0, 1 ) );
+
+			},
+			set: function ( reflectivity ) {
+
+				this.ior = ( 1 + 0.4 * reflectivity ) / ( 1 - 0.4 * reflectivity );
+
+			}
+		} );
+
+		this.iridescenceMap = null;
+		this.iridescenceIOR = 1.3;
+		this.iridescenceThicknessRange = [ 100, 400 ];
+		this.iridescenceThicknessMap = null;
+
+		this.sheenColor = new Color( 0x000000 );
+		this.sheenColorMap = null;
+		this.sheenRoughness = 1.0;
+		this.sheenRoughnessMap = null;
+
+		this.transmissionMap = null;
+
+		this.thickness = 0;
+		this.thicknessMap = null;
+		this.attenuationDistance = Infinity;
+		this.attenuationColor = new Color( 1, 1, 1 );
+
+		this.specularIntensity = 1.0;
+		this.specularIntensityMap = null;
+		this.specularColor = new Color( 1, 1, 1 );
+		this.specularColorMap = null;
+
+		this._anisotropy = 0;
+		this._clearcoat = 0;
+		this._dispersion = 0;
+		this._iridescence = 0;
+		this._sheen = 0.0;
+		this._transmission = 0;
+
+		this.setValues( parameters );
+
+	}
+
+	get anisotropy() {
+
+		return this._anisotropy;
+
+	}
+
+	set anisotropy( value ) {
+
+		if ( this._anisotropy > 0 !== value > 0 ) {
+
+			this.version ++;
+
+		}
+
+		this._anisotropy = value;
+
+	}
+
+	get clearcoat() {
+
+		return this._clearcoat;
+
+	}
+
+	set clearcoat( value ) {
+
+		if ( this._clearcoat > 0 !== value > 0 ) {
+
+			this.version ++;
+
+		}
+
+		this._clearcoat = value;
+
+	}
+
+	get iridescence() {
+
+		return this._iridescence;
+
+	}
+
+	set iridescence( value ) {
+
+		if ( this._iridescence > 0 !== value > 0 ) {
+
+			this.version ++;
+
+		}
+
+		this._iridescence = value;
+
+	}
+
+	get dispersion() {
+
+		return this._dispersion;
+
+	}
+
+	set dispersion( value ) {
+
+		if ( this._dispersion > 0 !== value > 0 ) {
+
+			this.version ++;
+
+		}
+
+		this._dispersion = value;
+
+	}
+
+	get sheen() {
+
+		return this._sheen;
+
+	}
+
+	set sheen( value ) {
+
+		if ( this._sheen > 0 !== value > 0 ) {
+
+			this.version ++;
+
+		}
+
+		this._sheen = value;
+
+	}
+
+	get transmission() {
+
+		return this._transmission;
+
+	}
+
+	set transmission( value ) {
+
+		if ( this._transmission > 0 !== value > 0 ) {
+
+			this.version ++;
+
+		}
+
+		this._transmission = value;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.defines = {
+
+			'STANDARD': '',
+			'PHYSICAL': ''
+
+		};
+
+		this.anisotropy = source.anisotropy;
+		this.anisotropyRotation = source.anisotropyRotation;
+		this.anisotropyMap = source.anisotropyMap;
+
+		this.clearcoat = source.clearcoat;
+		this.clearcoatMap = source.clearcoatMap;
+		this.clearcoatRoughness = source.clearcoatRoughness;
+		this.clearcoatRoughnessMap = source.clearcoatRoughnessMap;
+		this.clearcoatNormalMap = source.clearcoatNormalMap;
+		this.clearcoatNormalScale.copy( source.clearcoatNormalScale );
+
+		this.dispersion = source.dispersion;
+		this.ior = source.ior;
+
+		this.iridescence = source.iridescence;
+		this.iridescenceMap = source.iridescenceMap;
+		this.iridescenceIOR = source.iridescenceIOR;
+		this.iridescenceThicknessRange = [ ...source.iridescenceThicknessRange ];
+		this.iridescenceThicknessMap = source.iridescenceThicknessMap;
+
+		this.sheen = source.sheen;
+		this.sheenColor.copy( source.sheenColor );
+		this.sheenColorMap = source.sheenColorMap;
+		this.sheenRoughness = source.sheenRoughness;
+		this.sheenRoughnessMap = source.sheenRoughnessMap;
+
+		this.transmission = source.transmission;
+		this.transmissionMap = source.transmissionMap;
+
+		this.thickness = source.thickness;
+		this.thicknessMap = source.thicknessMap;
+		this.attenuationDistance = source.attenuationDistance;
+		this.attenuationColor.copy( source.attenuationColor );
+
+		this.specularIntensity = source.specularIntensity;
+		this.specularIntensityMap = source.specularIntensityMap;
+		this.specularColor.copy( source.specularColor );
+		this.specularColorMap = source.specularColorMap;
+
+		return this;
+
+	}
+
+}
+
+class MeshPhongMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshPhongMaterial = true;
+
+		this.type = 'MeshPhongMaterial';
+
+		this.color = new Color( 0xffffff ); // diffuse
+		this.specular = new Color( 0x111111 );
+		this.shininess = 30;
+
+		this.map = null;
+
+		this.lightMap = null;
+		this.lightMapIntensity = 1.0;
+
+		this.aoMap = null;
+		this.aoMapIntensity = 1.0;
+
+		this.emissive = new Color( 0x000000 );
+		this.emissiveIntensity = 1.0;
+		this.emissiveMap = null;
+
+		this.bumpMap = null;
+		this.bumpScale = 1;
+
+		this.normalMap = null;
+		this.normalMapType = TangentSpaceNormalMap;
+		this.normalScale = new Vector2( 1, 1 );
+
+		this.displacementMap = null;
+		this.displacementScale = 1;
+		this.displacementBias = 0;
+
+		this.specularMap = null;
+
+		this.alphaMap = null;
+
+		this.envMap = null;
+		this.envMapRotation = new Euler();
+		this.combine = MultiplyOperation;
+		this.reflectivity = 1;
+		this.refractionRatio = 0.98;
+
+		this.wireframe = false;
+		this.wireframeLinewidth = 1;
+		this.wireframeLinecap = 'round';
+		this.wireframeLinejoin = 'round';
+
+		this.flatShading = false;
+
+		this.fog = true;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.color.copy( source.color );
+		this.specular.copy( source.specular );
+		this.shininess = source.shininess;
+
+		this.map = source.map;
+
+		this.lightMap = source.lightMap;
+		this.lightMapIntensity = source.lightMapIntensity;
+
+		this.aoMap = source.aoMap;
+		this.aoMapIntensity = source.aoMapIntensity;
+
+		this.emissive.copy( source.emissive );
+		this.emissiveMap = source.emissiveMap;
+		this.emissiveIntensity = source.emissiveIntensity;
+
+		this.bumpMap = source.bumpMap;
+		this.bumpScale = source.bumpScale;
+
+		this.normalMap = source.normalMap;
+		this.normalMapType = source.normalMapType;
+		this.normalScale.copy( source.normalScale );
+
+		this.displacementMap = source.displacementMap;
+		this.displacementScale = source.displacementScale;
+		this.displacementBias = source.displacementBias;
+
+		this.specularMap = source.specularMap;
+
+		this.alphaMap = source.alphaMap;
+
+		this.envMap = source.envMap;
+		this.envMapRotation.copy( source.envMapRotation );
+		this.combine = source.combine;
+		this.reflectivity = source.reflectivity;
+		this.refractionRatio = source.refractionRatio;
+
+		this.wireframe = source.wireframe;
+		this.wireframeLinewidth = source.wireframeLinewidth;
+		this.wireframeLinecap = source.wireframeLinecap;
+		this.wireframeLinejoin = source.wireframeLinejoin;
+
+		this.flatShading = source.flatShading;
+
+		this.fog = source.fog;
+
+		return this;
+
+	}
+
+}
+
+class MeshToonMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshToonMaterial = true;
+
+		this.defines = { 'TOON': '' };
+
+		this.type = 'MeshToonMaterial';
+
+		this.color = new Color( 0xffffff );
+
+		this.map = null;
+		this.gradientMap = null;
+
+		this.lightMap = null;
+		this.lightMapIntensity = 1.0;
+
+		this.aoMap = null;
+		this.aoMapIntensity = 1.0;
+
+		this.emissive = new Color( 0x000000 );
+		this.emissiveIntensity = 1.0;
+		this.emissiveMap = null;
+
+		this.bumpMap = null;
+		this.bumpScale = 1;
+
+		this.normalMap = null;
+		this.normalMapType = TangentSpaceNormalMap;
+		this.normalScale = new Vector2( 1, 1 );
+
+		this.displacementMap = null;
+		this.displacementScale = 1;
+		this.displacementBias = 0;
+
+		this.alphaMap = null;
+
+		this.wireframe = false;
+		this.wireframeLinewidth = 1;
+		this.wireframeLinecap = 'round';
+		this.wireframeLinejoin = 'round';
+
+		this.fog = true;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.color.copy( source.color );
+
+		this.map = source.map;
+		this.gradientMap = source.gradientMap;
+
+		this.lightMap = source.lightMap;
+		this.lightMapIntensity = source.lightMapIntensity;
+
+		this.aoMap = source.aoMap;
+		this.aoMapIntensity = source.aoMapIntensity;
+
+		this.emissive.copy( source.emissive );
+		this.emissiveMap = source.emissiveMap;
+		this.emissiveIntensity = source.emissiveIntensity;
+
+		this.bumpMap = source.bumpMap;
+		this.bumpScale = source.bumpScale;
+
+		this.normalMap = source.normalMap;
+		this.normalMapType = source.normalMapType;
+		this.normalScale.copy( source.normalScale );
+
+		this.displacementMap = source.displacementMap;
+		this.displacementScale = source.displacementScale;
+		this.displacementBias = source.displacementBias;
+
+		this.alphaMap = source.alphaMap;
+
+		this.wireframe = source.wireframe;
+		this.wireframeLinewidth = source.wireframeLinewidth;
+		this.wireframeLinecap = source.wireframeLinecap;
+		this.wireframeLinejoin = source.wireframeLinejoin;
+
+		this.fog = source.fog;
+
+		return this;
+
+	}
+
+}
+
+class MeshNormalMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshNormalMaterial = true;
+
+		this.type = 'MeshNormalMaterial';
+
+		this.bumpMap = null;
+		this.bumpScale = 1;
+
+		this.normalMap = null;
+		this.normalMapType = TangentSpaceNormalMap;
+		this.normalScale = new Vector2( 1, 1 );
+
+		this.displacementMap = null;
+		this.displacementScale = 1;
+		this.displacementBias = 0;
+
+		this.wireframe = false;
+		this.wireframeLinewidth = 1;
+
+		this.flatShading = false;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.bumpMap = source.bumpMap;
+		this.bumpScale = source.bumpScale;
+
+		this.normalMap = source.normalMap;
+		this.normalMapType = source.normalMapType;
+		this.normalScale.copy( source.normalScale );
+
+		this.displacementMap = source.displacementMap;
+		this.displacementScale = source.displacementScale;
+		this.displacementBias = source.displacementBias;
+
+		this.wireframe = source.wireframe;
+		this.wireframeLinewidth = source.wireframeLinewidth;
+
+		this.flatShading = source.flatShading;
+
+		return this;
+
+	}
+
+}
+
+class MeshLambertMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshLambertMaterial = true;
+
+		this.type = 'MeshLambertMaterial';
+
+		this.color = new Color( 0xffffff ); // diffuse
+
+		this.map = null;
+
+		this.lightMap = null;
+		this.lightMapIntensity = 1.0;
+
+		this.aoMap = null;
+		this.aoMapIntensity = 1.0;
+
+		this.emissive = new Color( 0x000000 );
+		this.emissiveIntensity = 1.0;
+		this.emissiveMap = null;
+
+		this.bumpMap = null;
+		this.bumpScale = 1;
+
+		this.normalMap = null;
+		this.normalMapType = TangentSpaceNormalMap;
+		this.normalScale = new Vector2( 1, 1 );
+
+		this.displacementMap = null;
+		this.displacementScale = 1;
+		this.displacementBias = 0;
+
+		this.specularMap = null;
+
+		this.alphaMap = null;
+
+		this.envMap = null;
+		this.envMapRotation = new Euler();
+		this.combine = MultiplyOperation;
+		this.reflectivity = 1;
+		this.refractionRatio = 0.98;
+
+		this.wireframe = false;
+		this.wireframeLinewidth = 1;
+		this.wireframeLinecap = 'round';
+		this.wireframeLinejoin = 'round';
+
+		this.flatShading = false;
+
+		this.fog = true;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.color.copy( source.color );
+
+		this.map = source.map;
+
+		this.lightMap = source.lightMap;
+		this.lightMapIntensity = source.lightMapIntensity;
+
+		this.aoMap = source.aoMap;
+		this.aoMapIntensity = source.aoMapIntensity;
+
+		this.emissive.copy( source.emissive );
+		this.emissiveMap = source.emissiveMap;
+		this.emissiveIntensity = source.emissiveIntensity;
+
+		this.bumpMap = source.bumpMap;
+		this.bumpScale = source.bumpScale;
+
+		this.normalMap = source.normalMap;
+		this.normalMapType = source.normalMapType;
+		this.normalScale.copy( source.normalScale );
+
+		this.displacementMap = source.displacementMap;
+		this.displacementScale = source.displacementScale;
+		this.displacementBias = source.displacementBias;
+
+		this.specularMap = source.specularMap;
+
+		this.alphaMap = source.alphaMap;
+
+		this.envMap = source.envMap;
+		this.envMapRotation.copy( source.envMapRotation );
+		this.combine = source.combine;
+		this.reflectivity = source.reflectivity;
+		this.refractionRatio = source.refractionRatio;
+
+		this.wireframe = source.wireframe;
+		this.wireframeLinewidth = source.wireframeLinewidth;
+		this.wireframeLinecap = source.wireframeLinecap;
+		this.wireframeLinejoin = source.wireframeLinejoin;
+
+		this.flatShading = source.flatShading;
+
+		this.fog = source.fog;
+
+		return this;
+
+	}
+
+}
+
+class MeshMatcapMaterial extends Material {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isMeshMatcapMaterial = true;
+
+		this.defines = { 'MATCAP': '' };
+
+		this.type = 'MeshMatcapMaterial';
+
+		this.color = new Color( 0xffffff ); // diffuse
+
+		this.matcap = null;
+
+		this.map = null;
+
+		this.bumpMap = null;
+		this.bumpScale = 1;
+
+		this.normalMap = null;
+		this.normalMapType = TangentSpaceNormalMap;
+		this.normalScale = new Vector2( 1, 1 );
+
+		this.displacementMap = null;
+		this.displacementScale = 1;
+		this.displacementBias = 0;
+
+		this.alphaMap = null;
+
+		this.flatShading = false;
+
+		this.fog = true;
+
+		this.setValues( parameters );
+
+	}
+
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.defines = { 'MATCAP': '' };
+
+		this.color.copy( source.color );
+
+		this.matcap = source.matcap;
+
+		this.map = source.map;
+
+		this.bumpMap = source.bumpMap;
+		this.bumpScale = source.bumpScale;
+
+		this.normalMap = source.normalMap;
+		this.normalMapType = source.normalMapType;
+		this.normalScale.copy( source.normalScale );
+
+		this.displacementMap = source.displacementMap;
+		this.displacementScale = source.displacementScale;
+		this.displacementBias = source.displacementBias;
+
+		this.alphaMap = source.alphaMap;
+
+		this.flatShading = source.flatShading;
+
+		this.fog = source.fog;
+
+		return this;
+
+	}
+
+}
+
+class LineDashedMaterial extends LineBasicMaterial {
+
+	constructor( parameters ) {
+
+		super();
+
+		this.isLineDashedMaterial = true;
+
+		this.type = 'LineDashedMaterial';
+
+		this.scale = 1;
+		this.dashSize = 3;
+		this.gapSize = 1;
+
+		this.setValues( parameters );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.scale = source.scale;
+		this.dashSize = source.dashSize;
+		this.gapSize = source.gapSize;
+
+		return this;
+
+	}
+
+}
+
+// converts an array to a specific type
+function convertArray( array, type, forceClone ) {
+
+	if ( ! array || // let 'undefined' and 'null' pass
+		! forceClone && array.constructor === type ) return array;
+
+	if ( typeof type.BYTES_PER_ELEMENT === 'number' ) {
+
+		return new type( array ); // create typed array
+
+	}
+
+	return Array.prototype.slice.call( array ); // create Array
+
+}
+
+function isTypedArray( object ) {
+
+	return ArrayBuffer.isView( object ) &&
+		! ( object instanceof DataView );
+
+}
+
+// returns an array by which times and values can be sorted
+function getKeyframeOrder( times ) {
+
+	function compareTime( i, j ) {
+
+		return times[ i ] - times[ j ];
+
+	}
+
+	const n = times.length;
+	const result = new Array( n );
+	for ( let i = 0; i !== n; ++ i ) result[ i ] = i;
+
+	result.sort( compareTime );
+
+	return result;
+
+}
+
+// uses the array previously returned by 'getKeyframeOrder' to sort data
+function sortedArray( values, stride, order ) {
+
+	const nValues = values.length;
+	const result = new values.constructor( nValues );
+
+	for ( let i = 0, dstOffset = 0; dstOffset !== nValues; ++ i ) {
+
+		const srcOffset = order[ i ] * stride;
+
+		for ( let j = 0; j !== stride; ++ j ) {
+
+			result[ dstOffset ++ ] = values[ srcOffset + j ];
+
+		}
+
+	}
+
+	return result;
+
+}
+
+// function for parsing AOS keyframe formats
+function flattenJSON( jsonKeys, times, values, valuePropertyName ) {
+
+	let i = 1, key = jsonKeys[ 0 ];
+
+	while ( key !== undefined && key[ valuePropertyName ] === undefined ) {
+
+		key = jsonKeys[ i ++ ];
+
+	}
+
+	if ( key === undefined ) return; // no data
+
+	let value = key[ valuePropertyName ];
+	if ( value === undefined ) return; // no data
+
+	if ( Array.isArray( value ) ) {
+
+		do {
+
+			value = key[ valuePropertyName ];
+
+			if ( value !== undefined ) {
+
+				times.push( key.time );
+				values.push.apply( values, value ); // push all elements
+
+			}
+
+			key = jsonKeys[ i ++ ];
+
+		} while ( key !== undefined );
+
+	} else if ( value.toArray !== undefined ) {
+
+		// ...assume THREE.Math-ish
+
+		do {
+
+			value = key[ valuePropertyName ];
+
+			if ( value !== undefined ) {
+
+				times.push( key.time );
+				value.toArray( values, values.length );
+
+			}
+
+			key = jsonKeys[ i ++ ];
+
+		} while ( key !== undefined );
+
+	} else {
+
+		// otherwise push as-is
+
+		do {
+
+			value = key[ valuePropertyName ];
+
+			if ( value !== undefined ) {
+
+				times.push( key.time );
+				values.push( value );
+
+			}
+
+			key = jsonKeys[ i ++ ];
+
+		} while ( key !== undefined );
+
+	}
+
+}
+
+function subclip( sourceClip, name, startFrame, endFrame, fps = 30 ) {
+
+	const clip = sourceClip.clone();
+
+	clip.name = name;
+
+	const tracks = [];
+
+	for ( let i = 0; i < clip.tracks.length; ++ i ) {
+
+		const track = clip.tracks[ i ];
+		const valueSize = track.getValueSize();
+
+		const times = [];
+		const values = [];
+
+		for ( let j = 0; j < track.times.length; ++ j ) {
+
+			const frame = track.times[ j ] * fps;
+
+			if ( frame < startFrame || frame >= endFrame ) continue;
+
+			times.push( track.times[ j ] );
+
+			for ( let k = 0; k < valueSize; ++ k ) {
+
+				values.push( track.values[ j * valueSize + k ] );
+
+			}
+
+		}
+
+		if ( times.length === 0 ) continue;
+
+		track.times = convertArray( times, track.times.constructor );
+		track.values = convertArray( values, track.values.constructor );
+
+		tracks.push( track );
+
+	}
+
+	clip.tracks = tracks;
+
+	// find minimum .times value across all tracks in the trimmed clip
+
+	let minStartTime = Infinity;
+
+	for ( let i = 0; i < clip.tracks.length; ++ i ) {
+
+		if ( minStartTime > clip.tracks[ i ].times[ 0 ] ) {
+
+			minStartTime = clip.tracks[ i ].times[ 0 ];
+
+		}
+
+	}
+
+	// shift all tracks such that clip begins at t=0
+
+	for ( let i = 0; i < clip.tracks.length; ++ i ) {
+
+		clip.tracks[ i ].shift( - 1 * minStartTime );
+
+	}
+
+	clip.resetDuration();
+
+	return clip;
+
+}
+
+function makeClipAdditive( targetClip, referenceFrame = 0, referenceClip = targetClip, fps = 30 ) {
+
+	if ( fps <= 0 ) fps = 30;
+
+	const numTracks = referenceClip.tracks.length;
+	const referenceTime = referenceFrame / fps;
+
+	// Make each track's values relative to the values at the reference frame
+	for ( let i = 0; i < numTracks; ++ i ) {
+
+		const referenceTrack = referenceClip.tracks[ i ];
+		const referenceTrackType = referenceTrack.ValueTypeName;
+
+		// Skip this track if it's non-numeric
+		if ( referenceTrackType === 'bool' || referenceTrackType === 'string' ) continue;
+
+		// Find the track in the target clip whose name and type matches the reference track
+		const targetTrack = targetClip.tracks.find( function ( track ) {
+
+			return track.name === referenceTrack.name
+				&& track.ValueTypeName === referenceTrackType;
+
+		} );
+
+		if ( targetTrack === undefined ) continue;
+
+		let referenceOffset = 0;
+		const referenceValueSize = referenceTrack.getValueSize();
+
+		if ( referenceTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {
+
+			referenceOffset = referenceValueSize / 3;
+
+		}
+
+		let targetOffset = 0;
+		const targetValueSize = targetTrack.getValueSize();
+
+		if ( targetTrack.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline ) {
+
+			targetOffset = targetValueSize / 3;
+
+		}
+
+		const lastIndex = referenceTrack.times.length - 1;
+		let referenceValue;
+
+		// Find the value to subtract out of the track
+		if ( referenceTime <= referenceTrack.times[ 0 ] ) {
+
+			// Reference frame is earlier than the first keyframe, so just use the first keyframe
+			const startIndex = referenceOffset;
+			const endIndex = referenceValueSize - referenceOffset;
+			referenceValue = referenceTrack.values.slice( startIndex, endIndex );
+
+		} else if ( referenceTime >= referenceTrack.times[ lastIndex ] ) {
+
+			// Reference frame is after the last keyframe, so just use the last keyframe
+			const startIndex = lastIndex * referenceValueSize + referenceOffset;
+			const endIndex = startIndex + referenceValueSize - referenceOffset;
+			referenceValue = referenceTrack.values.slice( startIndex, endIndex );
+
+		} else {
+
+			// Interpolate to the reference value
+			const interpolant = referenceTrack.createInterpolant();
+			const startIndex = referenceOffset;
+			const endIndex = referenceValueSize - referenceOffset;
+			interpolant.evaluate( referenceTime );
+			referenceValue = interpolant.resultBuffer.slice( startIndex, endIndex );
+
+		}
+
+		// Conjugate the quaternion
+		if ( referenceTrackType === 'quaternion' ) {
+
+			const referenceQuat = new Quaternion().fromArray( referenceValue ).normalize().conjugate();
+			referenceQuat.toArray( referenceValue );
+
+		}
+
+		// Subtract the reference value from all of the track values
+
+		const numTimes = targetTrack.times.length;
+		for ( let j = 0; j < numTimes; ++ j ) {
+
+			const valueStart = j * targetValueSize + targetOffset;
+
+			if ( referenceTrackType === 'quaternion' ) {
+
+				// Multiply the conjugate for quaternion track types
+				Quaternion.multiplyQuaternionsFlat(
+					targetTrack.values,
+					valueStart,
+					referenceValue,
+					0,
+					targetTrack.values,
+					valueStart
+				);
+
+			} else {
+
+				const valueEnd = targetValueSize - targetOffset * 2;
+
+				// Subtract each value for all other numeric track types
+				for ( let k = 0; k < valueEnd; ++ k ) {
+
+					targetTrack.values[ valueStart + k ] -= referenceValue[ k ];
+
+				}
+
+			}
+
+		}
+
+	}
+
+	targetClip.blendMode = AdditiveAnimationBlendMode;
+
+	return targetClip;
+
+}
+
+const AnimationUtils = {
+	convertArray: convertArray,
+	isTypedArray: isTypedArray,
+	getKeyframeOrder: getKeyframeOrder,
+	sortedArray: sortedArray,
+	flattenJSON: flattenJSON,
+	subclip: subclip,
+	makeClipAdditive: makeClipAdditive
+};
+
+/**
+ * Abstract base class of interpolants over parametric samples.
+ *
+ * The parameter domain is one dimensional, typically the time or a path
+ * along a curve defined by the data.
+ *
+ * The sample values can have any dimensionality and derived classes may
+ * apply special interpretations to the data.
+ *
+ * This class provides the interval seek in a Template Method, deferring
+ * the actual interpolation to derived classes.
+ *
+ * Time complexity is O(1) for linear access crossing at most two points
+ * and O(log N) for random access, where N is the number of positions.
+ *
+ * References:
+ *
+ * 		http://www.oodesign.com/template-method-pattern.html
+ *
+ */
+
+class Interpolant {
+
+	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
+
+		this.parameterPositions = parameterPositions;
+		this._cachedIndex = 0;
+
+		this.resultBuffer = resultBuffer !== undefined ?
+			resultBuffer : new sampleValues.constructor( sampleSize );
+		this.sampleValues = sampleValues;
+		this.valueSize = sampleSize;
+
+		this.settings = null;
+		this.DefaultSettings_ = {};
+
+	}
+
+	evaluate( t ) {
+
+		const pp = this.parameterPositions;
+		let i1 = this._cachedIndex,
+			t1 = pp[ i1 ],
+			t0 = pp[ i1 - 1 ];
+
+		validate_interval: {
+
+			seek: {
+
+				let right;
+
+				linear_scan: {
+
+					//- See http://jsperf.com/comparison-to-undefined/3
+					//- slower code:
+					//-
+					//- 				if ( t >= t1 || t1 === undefined ) {
+					forward_scan: if ( ! ( t < t1 ) ) {
+
+						for ( let giveUpAt = i1 + 2; ; ) {
+
+							if ( t1 === undefined ) {
+
+								if ( t < t0 ) break forward_scan;
+
+								// after end
+
+								i1 = pp.length;
+								this._cachedIndex = i1;
+								return this.copySampleValue_( i1 - 1 );
+
+							}
+
+							if ( i1 === giveUpAt ) break; // this loop
+
+							t0 = t1;
+							t1 = pp[ ++ i1 ];
+
+							if ( t < t1 ) {
+
+								// we have arrived at the sought interval
+								break seek;
+
+							}
+
+						}
+
+						// prepare binary search on the right side of the index
+						right = pp.length;
+						break linear_scan;
+
+					}
+
+					//- slower code:
+					//-					if ( t < t0 || t0 === undefined ) {
+					if ( ! ( t >= t0 ) ) {
+
+						// looping?
+
+						const t1global = pp[ 1 ];
+
+						if ( t < t1global ) {
+
+							i1 = 2; // + 1, using the scan for the details
+							t0 = t1global;
+
+						}
+
+						// linear reverse scan
+
+						for ( let giveUpAt = i1 - 2; ; ) {
+
+							if ( t0 === undefined ) {
+
+								// before start
+
+								this._cachedIndex = 0;
+								return this.copySampleValue_( 0 );
+
+							}
+
+							if ( i1 === giveUpAt ) break; // this loop
+
+							t1 = t0;
+							t0 = pp[ -- i1 - 1 ];
+
+							if ( t >= t0 ) {
+
+								// we have arrived at the sought interval
+								break seek;
+
+							}
+
+						}
+
+						// prepare binary search on the left side of the index
+						right = i1;
+						i1 = 0;
+						break linear_scan;
+
+					}
+
+					// the interval is valid
+
+					break validate_interval;
+
+				} // linear scan
+
+				// binary search
+
+				while ( i1 < right ) {
+
+					const mid = ( i1 + right ) >>> 1;
+
+					if ( t < pp[ mid ] ) {
+
+						right = mid;
+
+					} else {
+
+						i1 = mid + 1;
+
+					}
+
+				}
+
+				t1 = pp[ i1 ];
+				t0 = pp[ i1 - 1 ];
+
+				// check boundary cases, again
+
+				if ( t0 === undefined ) {
+
+					this._cachedIndex = 0;
+					return this.copySampleValue_( 0 );
+
+				}
+
+				if ( t1 === undefined ) {
+
+					i1 = pp.length;
+					this._cachedIndex = i1;
+					return this.copySampleValue_( i1 - 1 );
+
+				}
+
+			} // seek
+
+			this._cachedIndex = i1;
+
+			this.intervalChanged_( i1, t0, t1 );
+
+		} // validate_interval
+
+		return this.interpolate_( i1, t0, t, t1 );
+
+	}
+
+	getSettings_() {
+
+		return this.settings || this.DefaultSettings_;
+
+	}
+
+	copySampleValue_( index ) {
+
+		// copies a sample value to the result buffer
+
+		const result = this.resultBuffer,
+			values = this.sampleValues,
+			stride = this.valueSize,
+			offset = index * stride;
+
+		for ( let i = 0; i !== stride; ++ i ) {
+
+			result[ i ] = values[ offset + i ];
+
+		}
+
+		return result;
+
+	}
+
+	// Template methods for derived classes:
+
+	interpolate_( /* i1, t0, t, t1 */ ) {
+
+		throw new Error( 'call to abstract method' );
+		// implementations shall return this.resultBuffer
+
+	}
+
+	intervalChanged_( /* i1, t0, t1 */ ) {
+
+		// empty
+
+	}
+
+}
+
+/**
+ * Fast and simple cubic spline interpolant.
+ *
+ * It was derived from a Hermitian construction setting the first derivative
+ * at each sample position to the linear slope between neighboring positions
+ * over their parameter interval.
+ */
+
+class CubicInterpolant extends Interpolant {
+
+	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
+
+		super( parameterPositions, sampleValues, sampleSize, resultBuffer );
+
+		this._weightPrev = - 0;
+		this._offsetPrev = - 0;
+		this._weightNext = - 0;
+		this._offsetNext = - 0;
+
+		this.DefaultSettings_ = {
+
+			endingStart: ZeroCurvatureEnding,
+			endingEnd: ZeroCurvatureEnding
+
+		};
+
+	}
+
+	intervalChanged_( i1, t0, t1 ) {
+
+		const pp = this.parameterPositions;
+		let iPrev = i1 - 2,
+			iNext = i1 + 1,
+
+			tPrev = pp[ iPrev ],
+			tNext = pp[ iNext ];
+
+		if ( tPrev === undefined ) {
+
+			switch ( this.getSettings_().endingStart ) {
+
+				case ZeroSlopeEnding:
+
+					// f'(t0) = 0
+					iPrev = i1;
+					tPrev = 2 * t0 - t1;
+
+					break;
+
+				case WrapAroundEnding:
+
+					// use the other end of the curve
+					iPrev = pp.length - 2;
+					tPrev = t0 + pp[ iPrev ] - pp[ iPrev + 1 ];
+
+					break;
+
+				default: // ZeroCurvatureEnding
+
+					// f''(t0) = 0 a.k.a. Natural Spline
+					iPrev = i1;
+					tPrev = t1;
+
+			}
+
+		}
+
+		if ( tNext === undefined ) {
+
+			switch ( this.getSettings_().endingEnd ) {
+
+				case ZeroSlopeEnding:
+
+					// f'(tN) = 0
+					iNext = i1;
+					tNext = 2 * t1 - t0;
+
+					break;
+
+				case WrapAroundEnding:
+
+					// use the other end of the curve
+					iNext = 1;
+					tNext = t1 + pp[ 1 ] - pp[ 0 ];
+
+					break;
+
+				default: // ZeroCurvatureEnding
+
+					// f''(tN) = 0, a.k.a. Natural Spline
+					iNext = i1 - 1;
+					tNext = t0;
+
+			}
+
+		}
+
+		const halfDt = ( t1 - t0 ) * 0.5,
+			stride = this.valueSize;
+
+		this._weightPrev = halfDt / ( t0 - tPrev );
+		this._weightNext = halfDt / ( tNext - t1 );
+		this._offsetPrev = iPrev * stride;
+		this._offsetNext = iNext * stride;
+
+	}
+
+	interpolate_( i1, t0, t, t1 ) {
+
+		const result = this.resultBuffer,
+			values = this.sampleValues,
+			stride = this.valueSize,
+
+			o1 = i1 * stride,		o0 = o1 - stride,
+			oP = this._offsetPrev, 	oN = this._offsetNext,
+			wP = this._weightPrev,	wN = this._weightNext,
+
+			p = ( t - t0 ) / ( t1 - t0 ),
+			pp = p * p,
+			ppp = pp * p;
+
+		// evaluate polynomials
+
+		const sP = - wP * ppp + 2 * wP * pp - wP * p;
+		const s0 = ( 1 + wP ) * ppp + ( - 1.5 - 2 * wP ) * pp + ( - 0.5 + wP ) * p + 1;
+		const s1 = ( - 1 - wN ) * ppp + ( 1.5 + wN ) * pp + 0.5 * p;
+		const sN = wN * ppp - wN * pp;
+
+		// combine data linearly
+
+		for ( let i = 0; i !== stride; ++ i ) {
+
+			result[ i ] =
+					sP * values[ oP + i ] +
+					s0 * values[ o0 + i ] +
+					s1 * values[ o1 + i ] +
+					sN * values[ oN + i ];
+
+		}
+
+		return result;
+
+	}
+
+}
+
+class LinearInterpolant extends Interpolant {
+
+	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
+
+		super( parameterPositions, sampleValues, sampleSize, resultBuffer );
+
+	}
+
+	interpolate_( i1, t0, t, t1 ) {
+
+		const result = this.resultBuffer,
+			values = this.sampleValues,
+			stride = this.valueSize,
+
+			offset1 = i1 * stride,
+			offset0 = offset1 - stride,
+
+			weight1 = ( t - t0 ) / ( t1 - t0 ),
+			weight0 = 1 - weight1;
+
+		for ( let i = 0; i !== stride; ++ i ) {
+
+			result[ i ] =
+					values[ offset0 + i ] * weight0 +
+					values[ offset1 + i ] * weight1;
+
+		}
+
+		return result;
+
+	}
+
+}
+
+/**
+ *
+ * Interpolant that evaluates to the sample value at the position preceding
+ * the parameter.
+ */
+
+class DiscreteInterpolant extends Interpolant {
+
+	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
+
+		super( parameterPositions, sampleValues, sampleSize, resultBuffer );
+
+	}
+
+	interpolate_( i1 /*, t0, t, t1 */ ) {
+
+		return this.copySampleValue_( i1 - 1 );
+
+	}
+
+}
+
+class KeyframeTrack {
+
+	constructor( name, times, values, interpolation ) {
+
+		if ( name === undefined ) throw new Error( 'THREE.KeyframeTrack: track name is undefined' );
+		if ( times === undefined || times.length === 0 ) throw new Error( 'THREE.KeyframeTrack: no keyframes in track named ' + name );
+
+		this.name = name;
+
+		this.times = convertArray( times, this.TimeBufferType );
+		this.values = convertArray( values, this.ValueBufferType );
+
+		this.setInterpolation( interpolation || this.DefaultInterpolation );
+
+	}
+
+	// Serialization (in static context, because of constructor invocation
+	// and automatic invocation of .toJSON):
+
+	static toJSON( track ) {
+
+		const trackType = track.constructor;
+
+		let json;
+
+		// derived classes can define a static toJSON method
+		if ( trackType.toJSON !== this.toJSON ) {
+
+			json = trackType.toJSON( track );
+
+		} else {
+
+			// by default, we assume the data can be serialized as-is
+			json = {
+
+				'name': track.name,
+				'times': convertArray( track.times, Array ),
+				'values': convertArray( track.values, Array )
+
+			};
+
+			const interpolation = track.getInterpolation();
+
+			if ( interpolation !== track.DefaultInterpolation ) {
+
+				json.interpolation = interpolation;
+
+			}
+
+		}
+
+		json.type = track.ValueTypeName; // mandatory
+
+		return json;
+
+	}
+
+	InterpolantFactoryMethodDiscrete( result ) {
+
+		return new DiscreteInterpolant( this.times, this.values, this.getValueSize(), result );
+
+	}
+
+	InterpolantFactoryMethodLinear( result ) {
+
+		return new LinearInterpolant( this.times, this.values, this.getValueSize(), result );
+
+	}
+
+	InterpolantFactoryMethodSmooth( result ) {
+
+		return new CubicInterpolant( this.times, this.values, this.getValueSize(), result );
+
+	}
+
+	setInterpolation( interpolation ) {
+
+		let factoryMethod;
+
+		switch ( interpolation ) {
+
+			case InterpolateDiscrete:
+
+				factoryMethod = this.InterpolantFactoryMethodDiscrete;
+
+				break;
+
+			case InterpolateLinear:
+
+				factoryMethod = this.InterpolantFactoryMethodLinear;
+
+				break;
+
+			case InterpolateSmooth:
+
+				factoryMethod = this.InterpolantFactoryMethodSmooth;
+
+				break;
+
+		}
+
+		if ( factoryMethod === undefined ) {
+
+			const message = 'unsupported interpolation for ' +
+				this.ValueTypeName + ' keyframe track named ' + this.name;
+
+			if ( this.createInterpolant === undefined ) {
+
+				// fall back to default, unless the default itself is messed up
+				if ( interpolation !== this.DefaultInterpolation ) {
+
+					this.setInterpolation( this.DefaultInterpolation );
+
+				} else {
+
+					throw new Error( message ); // fatal, in this case
+
+				}
+
+			}
+
+			console.warn( 'THREE.KeyframeTrack:', message );
+			return this;
+
+		}
+
+		this.createInterpolant = factoryMethod;
+
+		return this;
+
+	}
+
+	getInterpolation() {
+
+		switch ( this.createInterpolant ) {
+
+			case this.InterpolantFactoryMethodDiscrete:
+
+				return InterpolateDiscrete;
+
+			case this.InterpolantFactoryMethodLinear:
+
+				return InterpolateLinear;
+
+			case this.InterpolantFactoryMethodSmooth:
+
+				return InterpolateSmooth;
+
+		}
+
+	}
+
+	getValueSize() {
+
+		return this.values.length / this.times.length;
+
+	}
+
+	// move all keyframes either forwards or backwards in time
+	shift( timeOffset ) {
+
+		if ( timeOffset !== 0.0 ) {
+
+			const times = this.times;
+
+			for ( let i = 0, n = times.length; i !== n; ++ i ) {
+
+				times[ i ] += timeOffset;
+
+			}
+
+		}
+
+		return this;
+
+	}
+
+	// scale all keyframe times by a factor (useful for frame <-> seconds conversions)
+	scale( timeScale ) {
+
+		if ( timeScale !== 1.0 ) {
+
+			const times = this.times;
+
+			for ( let i = 0, n = times.length; i !== n; ++ i ) {
+
+				times[ i ] *= timeScale;
+
+			}
+
+		}
+
+		return this;
+
+	}
+
+	// removes keyframes before and after animation without changing any values within the range [startTime, endTime].
+	// IMPORTANT: We do not shift around keys to the start of the track time, because for interpolated keys this will change their values
+	trim( startTime, endTime ) {
+
+		const times = this.times,
+			nKeys = times.length;
+
+		let from = 0,
+			to = nKeys - 1;
+
+		while ( from !== nKeys && times[ from ] < startTime ) {
+
+			++ from;
+
+		}
+
+		while ( to !== - 1 && times[ to ] > endTime ) {
+
+			-- to;
+
+		}
+
+		++ to; // inclusive -> exclusive bound
+
+		if ( from !== 0 || to !== nKeys ) {
+
+			// empty tracks are forbidden, so keep at least one keyframe
+			if ( from >= to ) {
+
+				to = Math.max( to, 1 );
+				from = to - 1;
+
+			}
+
+			const stride = this.getValueSize();
+			this.times = times.slice( from, to );
+			this.values = this.values.slice( from * stride, to * stride );
+
+		}
+
+		return this;
+
+	}
+
+	// ensure we do not get a GarbageInGarbageOut situation, make sure tracks are at least minimally viable
+	validate() {
+
+		let valid = true;
+
+		const valueSize = this.getValueSize();
+		if ( valueSize - Math.floor( valueSize ) !== 0 ) {
+
+			console.error( 'THREE.KeyframeTrack: Invalid value size in track.', this );
+			valid = false;
+
+		}
+
+		const times = this.times,
+			values = this.values,
+
+			nKeys = times.length;
+
+		if ( nKeys === 0 ) {
+
+			console.error( 'THREE.KeyframeTrack: Track is empty.', this );
+			valid = false;
+
+		}
+
+		let prevTime = null;
+
+		for ( let i = 0; i !== nKeys; i ++ ) {
+
+			const currTime = times[ i ];
+
+			if ( typeof currTime === 'number' && isNaN( currTime ) ) {
+
+				console.error( 'THREE.KeyframeTrack: Time is not a valid number.', this, i, currTime );
+				valid = false;
+				break;
+
+			}
+
+			if ( prevTime !== null && prevTime > currTime ) {
+
+				console.error( 'THREE.KeyframeTrack: Out of order keys.', this, i, currTime, prevTime );
+				valid = false;
+				break;
+
+			}
+
+			prevTime = currTime;
+
+		}
+
+		if ( values !== undefined ) {
+
+			if ( isTypedArray( values ) ) {
+
+				for ( let i = 0, n = values.length; i !== n; ++ i ) {
+
+					const value = values[ i ];
+
+					if ( isNaN( value ) ) {
+
+						console.error( 'THREE.KeyframeTrack: Value is not a valid number.', this, i, value );
+						valid = false;
+						break;
+
+					}
+
+				}
+
+			}
+
+		}
+
+		return valid;
+
+	}
+
+	// removes equivalent sequential keys as common in morph target sequences
+	// (0,0,0,0,1,1,1,0,0,0,0,0,0,0) --> (0,0,1,1,0,0)
+	optimize() {
+
+		// times or values may be shared with other tracks, so overwriting is unsafe
+		const times = this.times.slice(),
+			values = this.values.slice(),
+			stride = this.getValueSize(),
+
+			smoothInterpolation = this.getInterpolation() === InterpolateSmooth,
+
+			lastIndex = times.length - 1;
+
+		let writeIndex = 1;
+
+		for ( let i = 1; i < lastIndex; ++ i ) {
+
+			let keep = false;
+
+			const time = times[ i ];
+			const timeNext = times[ i + 1 ];
+
+			// remove adjacent keyframes scheduled at the same time
+
+			if ( time !== timeNext && ( i !== 1 || time !== times[ 0 ] ) ) {
+
+				if ( ! smoothInterpolation ) {
+
+					// remove unnecessary keyframes same as their neighbors
+
+					const offset = i * stride,
+						offsetP = offset - stride,
+						offsetN = offset + stride;
+
+					for ( let j = 0; j !== stride; ++ j ) {
+
+						const value = values[ offset + j ];
+
+						if ( value !== values[ offsetP + j ] ||
+							value !== values[ offsetN + j ] ) {
+
+							keep = true;
+							break;
+
+						}
+
+					}
+
+				} else {
+
+					keep = true;
+
+				}
+
+			}
+
+			// in-place compaction
+
+			if ( keep ) {
+
+				if ( i !== writeIndex ) {
+
+					times[ writeIndex ] = times[ i ];
+
+					const readOffset = i * stride,
+						writeOffset = writeIndex * stride;
+
+					for ( let j = 0; j !== stride; ++ j ) {
+
+						values[ writeOffset + j ] = values[ readOffset + j ];
+
+					}
+
+				}
+
+				++ writeIndex;
+
+			}
+
+		}
+
+		// flush last keyframe (compaction looks ahead)
+
+		if ( lastIndex > 0 ) {
+
+			times[ writeIndex ] = times[ lastIndex ];
+
+			for ( let readOffset = lastIndex * stride, writeOffset = writeIndex * stride, j = 0; j !== stride; ++ j ) {
+
+				values[ writeOffset + j ] = values[ readOffset + j ];
+
+			}
+
+			++ writeIndex;
+
+		}
+
+		if ( writeIndex !== times.length ) {
+
+			this.times = times.slice( 0, writeIndex );
+			this.values = values.slice( 0, writeIndex * stride );
+
+		} else {
+
+			this.times = times;
+			this.values = values;
+
+		}
+
+		return this;
+
+	}
+
+	clone() {
+
+		const times = this.times.slice();
+		const values = this.values.slice();
+
+		const TypedKeyframeTrack = this.constructor;
+		const track = new TypedKeyframeTrack( this.name, times, values );
+
+		// Interpolant argument to constructor is not saved, so copy the factory method directly.
+		track.createInterpolant = this.createInterpolant;
+
+		return track;
+
+	}
+
+}
+
+KeyframeTrack.prototype.TimeBufferType = Float32Array;
+KeyframeTrack.prototype.ValueBufferType = Float32Array;
+KeyframeTrack.prototype.DefaultInterpolation = InterpolateLinear;
+
+/**
+ * A Track of Boolean keyframe values.
+ */
+class BooleanKeyframeTrack extends KeyframeTrack {
+
+	// No interpolation parameter because only InterpolateDiscrete is valid.
+	constructor( name, times, values ) {
+
+		super( name, times, values );
+
+	}
+
+}
+
+BooleanKeyframeTrack.prototype.ValueTypeName = 'bool';
+BooleanKeyframeTrack.prototype.ValueBufferType = Array;
+BooleanKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
+BooleanKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
+BooleanKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;
+
+/**
+ * A Track of keyframe values that represent color.
+ */
+class ColorKeyframeTrack extends KeyframeTrack {}
+
+ColorKeyframeTrack.prototype.ValueTypeName = 'color';
+
+/**
+ * A Track of numeric keyframe values.
+ */
+class NumberKeyframeTrack extends KeyframeTrack {}
+
+NumberKeyframeTrack.prototype.ValueTypeName = 'number';
+
+/**
+ * Spherical linear unit quaternion interpolant.
+ */
+
+class QuaternionLinearInterpolant extends Interpolant {
+
+	constructor( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
+
+		super( parameterPositions, sampleValues, sampleSize, resultBuffer );
+
+	}
+
+	interpolate_( i1, t0, t, t1 ) {
+
+		const result = this.resultBuffer,
+			values = this.sampleValues,
+			stride = this.valueSize,
+
+			alpha = ( t - t0 ) / ( t1 - t0 );
+
+		let offset = i1 * stride;
+
+		for ( let end = offset + stride; offset !== end; offset += 4 ) {
+
+			Quaternion.slerpFlat( result, 0, values, offset - stride, values, offset, alpha );
+
+		}
+
+		return result;
+
+	}
+
+}
+
+/**
+ * A Track of quaternion keyframe values.
+ */
+class QuaternionKeyframeTrack extends KeyframeTrack {
+
+	InterpolantFactoryMethodLinear( result ) {
+
+		return new QuaternionLinearInterpolant( this.times, this.values, this.getValueSize(), result );
+
+	}
+
+}
+
+QuaternionKeyframeTrack.prototype.ValueTypeName = 'quaternion';
+// ValueBufferType is inherited
+// DefaultInterpolation is inherited;
+QuaternionKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;
+
+/**
+ * A Track that interpolates Strings
+ */
+class StringKeyframeTrack extends KeyframeTrack {
+
+	// No interpolation parameter because only InterpolateDiscrete is valid.
+	constructor( name, times, values ) {
+
+		super( name, times, values );
+
+	}
+
+}
+
+StringKeyframeTrack.prototype.ValueTypeName = 'string';
+StringKeyframeTrack.prototype.ValueBufferType = Array;
+StringKeyframeTrack.prototype.DefaultInterpolation = InterpolateDiscrete;
+StringKeyframeTrack.prototype.InterpolantFactoryMethodLinear = undefined;
+StringKeyframeTrack.prototype.InterpolantFactoryMethodSmooth = undefined;
+
+/**
+ * A Track of vectored keyframe values.
+ */
+class VectorKeyframeTrack extends KeyframeTrack {}
+
+VectorKeyframeTrack.prototype.ValueTypeName = 'vector';
+
+class AnimationClip {
+
+	constructor( name = '', duration = - 1, tracks = [], blendMode = NormalAnimationBlendMode ) {
+
+		this.name = name;
+		this.tracks = tracks;
+		this.duration = duration;
+		this.blendMode = blendMode;
+
+		this.uuid = generateUUID();
+
+		// this means it should figure out its duration by scanning the tracks
+		if ( this.duration < 0 ) {
+
+			this.resetDuration();
+
+		}
+
+	}
+
+
+	static parse( json ) {
+
+		const tracks = [],
+			jsonTracks = json.tracks,
+			frameTime = 1.0 / ( json.fps || 1.0 );
+
+		for ( let i = 0, n = jsonTracks.length; i !== n; ++ i ) {
+
+			tracks.push( parseKeyframeTrack( jsonTracks[ i ] ).scale( frameTime ) );
+
+		}
+
+		const clip = new this( json.name, json.duration, tracks, json.blendMode );
+		clip.uuid = json.uuid;
+
+		return clip;
+
+	}
+
+	static toJSON( clip ) {
+
+		const tracks = [],
+			clipTracks = clip.tracks;
+
+		const json = {
+
+			'name': clip.name,
+			'duration': clip.duration,
+			'tracks': tracks,
+			'uuid': clip.uuid,
+			'blendMode': clip.blendMode
+
+		};
+
+		for ( let i = 0, n = clipTracks.length; i !== n; ++ i ) {
+
+			tracks.push( KeyframeTrack.toJSON( clipTracks[ i ] ) );
+
+		}
+
+		return json;
+
+	}
+
+	static CreateFromMorphTargetSequence( name, morphTargetSequence, fps, noLoop ) {
+
+		const numMorphTargets = morphTargetSequence.length;
+		const tracks = [];
+
+		for ( let i = 0; i < numMorphTargets; i ++ ) {
+
+			let times = [];
+			let values = [];
+
+			times.push(
+				( i + numMorphTargets - 1 ) % numMorphTargets,
+				i,
+				( i + 1 ) % numMorphTargets );
+
+			values.push( 0, 1, 0 );
+
+			const order = getKeyframeOrder( times );
+			times = sortedArray( times, 1, order );
+			values = sortedArray( values, 1, order );
+
+			// if there is a key at the first frame, duplicate it as the
+			// last frame as well for perfect loop.
+			if ( ! noLoop && times[ 0 ] === 0 ) {
+
+				times.push( numMorphTargets );
+				values.push( values[ 0 ] );
+
+			}
+
+			tracks.push(
+				new NumberKeyframeTrack(
+					'.morphTargetInfluences[' + morphTargetSequence[ i ].name + ']',
+					times, values
+				).scale( 1.0 / fps ) );
+
+		}
+
+		return new this( name, - 1, tracks );
+
+	}
+
+	static findByName( objectOrClipArray, name ) {
+
+		let clipArray = objectOrClipArray;
+
+		if ( ! Array.isArray( objectOrClipArray ) ) {
+
+			const o = objectOrClipArray;
+			clipArray = o.geometry && o.geometry.animations || o.animations;
+
+		}
+
+		for ( let i = 0; i < clipArray.length; i ++ ) {
+
+			if ( clipArray[ i ].name === name ) {
+
+				return clipArray[ i ];
+
+			}
+
+		}
+
+		return null;
+
+	}
+
+	static CreateClipsFromMorphTargetSequences( morphTargets, fps, noLoop ) {
+
+		const animationToMorphTargets = {};
+
+		// tested with https://regex101.com/ on trick sequences
+		// such flamingo_flyA_003, flamingo_run1_003, crdeath0059
+		const pattern = /^([\w-]*?)([\d]+)$/;
+
+		// sort morph target names into animation groups based
+		// patterns like Walk_001, Walk_002, Run_001, Run_002
+		for ( let i = 0, il = morphTargets.length; i < il; i ++ ) {
+
+			const morphTarget = morphTargets[ i ];
+			const parts = morphTarget.name.match( pattern );
+
+			if ( parts && parts.length > 1 ) {
+
+				const name = parts[ 1 ];
+
+				let animationMorphTargets = animationToMorphTargets[ name ];
+
+				if ( ! animationMorphTargets ) {
+
+					animationToMorphTargets[ name ] = animationMorphTargets = [];
+
+				}
+
+				animationMorphTargets.push( morphTarget );
+
+			}
+
+		}
+
+		const clips = [];
+
+		for ( const name in animationToMorphTargets ) {
+
+			clips.push( this.CreateFromMorphTargetSequence( name, animationToMorphTargets[ name ], fps, noLoop ) );
+
+		}
+
+		return clips;
+
+	}
+
+	// parse the animation.hierarchy format
+	static parseAnimation( animation, bones ) {
+
+		if ( ! animation ) {
+
+			console.error( 'THREE.AnimationClip: No animation in JSONLoader data.' );
+			return null;
+
+		}
+
+		const addNonemptyTrack = function ( trackType, trackName, animationKeys, propertyName, destTracks ) {
+
+			// only return track if there are actually keys.
+			if ( animationKeys.length !== 0 ) {
+
+				const times = [];
+				const values = [];
+
+				flattenJSON( animationKeys, times, values, propertyName );
+
+				// empty keys are filtered out, so check again
+				if ( times.length !== 0 ) {
+
+					destTracks.push( new trackType( trackName, times, values ) );
+
+				}
+
+			}
+
+		};
+
+		const tracks = [];
+
+		const clipName = animation.name || 'default';
+		const fps = animation.fps || 30;
+		const blendMode = animation.blendMode;
+
+		// automatic length determination in AnimationClip.
+		let duration = animation.length || - 1;
+
+		const hierarchyTracks = animation.hierarchy || [];
+
+		for ( let h = 0; h < hierarchyTracks.length; h ++ ) {
+
+			const animationKeys = hierarchyTracks[ h ].keys;
+
+			// skip empty tracks
+			if ( ! animationKeys || animationKeys.length === 0 ) continue;
+
+			// process morph targets
+			if ( animationKeys[ 0 ].morphTargets ) {
+
+				// figure out all morph targets used in this track
+				const morphTargetNames = {};
+
+				let k;
+
+				for ( k = 0; k < animationKeys.length; k ++ ) {
+
+					if ( animationKeys[ k ].morphTargets ) {
+
+						for ( let m = 0; m < animationKeys[ k ].morphTargets.length; m ++ ) {
+
+							morphTargetNames[ animationKeys[ k ].morphTargets[ m ] ] = - 1;
+
+						}
+
+					}
+
+				}
+
+				// create a track for each morph target with all zero
+				// morphTargetInfluences except for the keys in which
+				// the morphTarget is named.
+				for ( const morphTargetName in morphTargetNames ) {
+
+					const times = [];
+					const values = [];
+
+					for ( let m = 0; m !== animationKeys[ k ].morphTargets.length; ++ m ) {
+
+						const animationKey = animationKeys[ k ];
+
+						times.push( animationKey.time );
+						values.push( ( animationKey.morphTarget === morphTargetName ) ? 1 : 0 );
+
+					}
+
+					tracks.push( new NumberKeyframeTrack( '.morphTargetInfluence[' + morphTargetName + ']', times, values ) );
+
+				}
+
+				duration = morphTargetNames.length * fps;
+
+			} else {
+
+				// ...assume skeletal animation
+
+				const boneName = '.bones[' + bones[ h ].name + ']';
+
+				addNonemptyTrack(
+					VectorKeyframeTrack, boneName + '.position',
+					animationKeys, 'pos', tracks );
+
+				addNonemptyTrack(
+					QuaternionKeyframeTrack, boneName + '.quaternion',
+					animationKeys, 'rot', tracks );
+
+				addNonemptyTrack(
+					VectorKeyframeTrack, boneName + '.scale',
+					animationKeys, 'scl', tracks );
+
+			}
+
+		}
+
+		if ( tracks.length === 0 ) {
+
+			return null;
+
+		}
+
+		const clip = new this( clipName, duration, tracks, blendMode );
+
+		return clip;
+
+	}
+
+	resetDuration() {
+
+		const tracks = this.tracks;
+		let duration = 0;
+
+		for ( let i = 0, n = tracks.length; i !== n; ++ i ) {
+
+			const track = this.tracks[ i ];
+
+			duration = Math.max( duration, track.times[ track.times.length - 1 ] );
+
+		}
+
+		this.duration = duration;
+
+		return this;
+
+	}
+
+	trim() {
+
+		for ( let i = 0; i < this.tracks.length; i ++ ) {
+
+			this.tracks[ i ].trim( 0, this.duration );
+
+		}
+
+		return this;
+
+	}
+
+	validate() {
+
+		let valid = true;
+
+		for ( let i = 0; i < this.tracks.length; i ++ ) {
+
+			valid = valid && this.tracks[ i ].validate();
+
+		}
+
+		return valid;
+
+	}
+
+	optimize() {
+
+		for ( let i = 0; i < this.tracks.length; i ++ ) {
+
+			this.tracks[ i ].optimize();
+
+		}
+
+		return this;
+
+	}
+
+	clone() {
+
+		const tracks = [];
+
+		for ( let i = 0; i < this.tracks.length; i ++ ) {
+
+			tracks.push( this.tracks[ i ].clone() );
+
+		}
+
+		return new this.constructor( this.name, this.duration, tracks, this.blendMode );
+
+	}
+
+	toJSON() {
+
+		return this.constructor.toJSON( this );
+
+	}
+
+}
+
+function getTrackTypeForValueTypeName( typeName ) {
+
+	switch ( typeName.toLowerCase() ) {
+
+		case 'scalar':
+		case 'double':
+		case 'float':
+		case 'number':
+		case 'integer':
+
+			return NumberKeyframeTrack;
+
+		case 'vector':
+		case 'vector2':
+		case 'vector3':
+		case 'vector4':
+
+			return VectorKeyframeTrack;
+
+		case 'color':
+
+			return ColorKeyframeTrack;
+
+		case 'quaternion':
+
+			return QuaternionKeyframeTrack;
+
+		case 'bool':
+		case 'boolean':
+
+			return BooleanKeyframeTrack;
+
+		case 'string':
+
+			return StringKeyframeTrack;
+
+	}
+
+	throw new Error( 'THREE.KeyframeTrack: Unsupported typeName: ' + typeName );
+
+}
+
+function parseKeyframeTrack( json ) {
+
+	if ( json.type === undefined ) {
+
+		throw new Error( 'THREE.KeyframeTrack: track type undefined, can not parse' );
+
+	}
+
+	const trackType = getTrackTypeForValueTypeName( json.type );
+
+	if ( json.times === undefined ) {
+
+		const times = [], values = [];
+
+		flattenJSON( json.keys, times, values, 'value' );
+
+		json.times = times;
+		json.values = values;
+
+	}
+
+	// derived classes can define a static parse method
+	if ( trackType.parse !== undefined ) {
+
+		return trackType.parse( json );
+
+	} else {
+
+		// by default, we assume a constructor compatible with the base
+		return new trackType( json.name, json.times, json.values, json.interpolation );
+
+	}
+
+}
+
+const Cache = {
+
+	enabled: false,
+
+	files: {},
+
+	add: function ( key, file ) {
+
+		if ( this.enabled === false ) return;
+
+		// console.log( 'THREE.Cache', 'Adding key:', key );
+
+		this.files[ key ] = file;
+
+	},
+
+	get: function ( key ) {
+
+		if ( this.enabled === false ) return;
+
+		// console.log( 'THREE.Cache', 'Checking key:', key );
+
+		return this.files[ key ];
+
+	},
+
+	remove: function ( key ) {
+
+		delete this.files[ key ];
+
+	},
+
+	clear: function () {
+
+		this.files = {};
+
+	}
+
+};
+
+class LoadingManager {
+
+	constructor( onLoad, onProgress, onError ) {
+
+		const scope = this;
+
+		let isLoading = false;
+		let itemsLoaded = 0;
+		let itemsTotal = 0;
+		let urlModifier = undefined;
+		const handlers = [];
+
+		// Refer to #5689 for the reason why we don't set .onStart
+		// in the constructor
+
+		this.onStart = undefined;
+		this.onLoad = onLoad;
+		this.onProgress = onProgress;
+		this.onError = onError;
+
+		this.itemStart = function ( url ) {
+
+			itemsTotal ++;
+
+			if ( isLoading === false ) {
+
+				if ( scope.onStart !== undefined ) {
+
+					scope.onStart( url, itemsLoaded, itemsTotal );
+
+				}
+
+			}
+
+			isLoading = true;
+
+		};
+
+		this.itemEnd = function ( url ) {
+
+			itemsLoaded ++;
+
+			if ( scope.onProgress !== undefined ) {
+
+				scope.onProgress( url, itemsLoaded, itemsTotal );
+
+			}
+
+			if ( itemsLoaded === itemsTotal ) {
+
+				isLoading = false;
+
+				if ( scope.onLoad !== undefined ) {
+
+					scope.onLoad();
+
+				}
+
+			}
+
+		};
+
+		this.itemError = function ( url ) {
+
+			if ( scope.onError !== undefined ) {
+
+				scope.onError( url );
+
+			}
+
+		};
+
+		this.resolveURL = function ( url ) {
+
+			if ( urlModifier ) {
+
+				return urlModifier( url );
+
+			}
+
+			return url;
+
+		};
+
+		this.setURLModifier = function ( transform ) {
+
+			urlModifier = transform;
+
+			return this;
+
+		};
+
+		this.addHandler = function ( regex, loader ) {
+
+			handlers.push( regex, loader );
+
+			return this;
+
+		};
+
+		this.removeHandler = function ( regex ) {
+
+			const index = handlers.indexOf( regex );
+
+			if ( index !== - 1 ) {
+
+				handlers.splice( index, 2 );
+
+			}
+
+			return this;
+
+		};
+
+		this.getHandler = function ( file ) {
+
+			for ( let i = 0, l = handlers.length; i < l; i += 2 ) {
+
+				const regex = handlers[ i ];
+				const loader = handlers[ i + 1 ];
+
+				if ( regex.global ) regex.lastIndex = 0; // see #17920
+
+				if ( regex.test( file ) ) {
+
+					return loader;
+
+				}
+
+			}
+
+			return null;
+
+		};
+
+	}
+
+}
+
+const DefaultLoadingManager = /*@__PURE__*/ new LoadingManager();
+
+class Loader {
+
+	constructor( manager ) {
+
+		this.manager = ( manager !== undefined ) ? manager : DefaultLoadingManager;
+
+		this.crossOrigin = 'anonymous';
+		this.withCredentials = false;
+		this.path = '';
+		this.resourcePath = '';
+		this.requestHeader = {};
+
+	}
+
+	load( /* url, onLoad, onProgress, onError */ ) {}
+
+	loadAsync( url, onProgress ) {
+
+		const scope = this;
+
+		return new Promise( function ( resolve, reject ) {
+
+			scope.load( url, resolve, onProgress, reject );
+
+		} );
+
+	}
+
+	parse( /* data */ ) {}
+
+	setCrossOrigin( crossOrigin ) {
+
+		this.crossOrigin = crossOrigin;
+		return this;
+
+	}
+
+	setWithCredentials( value ) {
+
+		this.withCredentials = value;
+		return this;
+
+	}
+
+	setPath( path ) {
+
+		this.path = path;
+		return this;
+
+	}
+
+	setResourcePath( resourcePath ) {
+
+		this.resourcePath = resourcePath;
+		return this;
+
+	}
+
+	setRequestHeader( requestHeader ) {
+
+		this.requestHeader = requestHeader;
+		return this;
+
+	}
+
+}
+
+Loader.DEFAULT_MATERIAL_NAME = '__DEFAULT';
+
+const loading = {};
+
+class HttpError extends Error {
+
+	constructor( message, response ) {
+
+		super( message );
+		this.response = response;
+
+	}
+
+}
+
+class FileLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		if ( url === undefined ) url = '';
+
+		if ( this.path !== undefined ) url = this.path + url;
+
+		url = this.manager.resolveURL( url );
+
+		const cached = Cache.get( url );
+
+		if ( cached !== undefined ) {
+
+			this.manager.itemStart( url );
+
+			setTimeout( () => {
+
+				if ( onLoad ) onLoad( cached );
+
+				this.manager.itemEnd( url );
+
+			}, 0 );
+
+			return cached;
+
+		}
+
+		// Check if request is duplicate
+
+		if ( loading[ url ] !== undefined ) {
+
+			loading[ url ].push( {
+
+				onLoad: onLoad,
+				onProgress: onProgress,
+				onError: onError
+
+			} );
+
+			return;
+
+		}
+
+		// Initialise array for duplicate requests
+		loading[ url ] = [];
+
+		loading[ url ].push( {
+			onLoad: onLoad,
+			onProgress: onProgress,
+			onError: onError,
+		} );
+
+		// create request
+		const req = new Request( url, {
+			headers: new Headers( this.requestHeader ),
+			credentials: this.withCredentials ? 'include' : 'same-origin',
+			// An abort controller could be added within a future PR
+		} );
+
+		// record states ( avoid data race )
+		const mimeType = this.mimeType;
+		const responseType = this.responseType;
+
+		// start the fetch
+		fetch( req )
+			.then( response => {
+
+				if ( response.status === 200 || response.status === 0 ) {
+
+					// Some browsers return HTTP Status 0 when using non-http protocol
+					// e.g. 'file://' or 'data://'. Handle as success.
+
+					if ( response.status === 0 ) {
+
+						console.warn( 'THREE.FileLoader: HTTP Status 0 received.' );
+
+					}
+
+					// Workaround: Checking if response.body === undefined for Alipay browser #23548
+
+					if ( typeof ReadableStream === 'undefined' || response.body === undefined || response.body.getReader === undefined ) {
+
+						return response;
+
+					}
+
+					const callbacks = loading[ url ];
+					const reader = response.body.getReader();
+
+					// Nginx needs X-File-Size check
+					// https://serverfault.com/questions/482875/why-does-nginx-remove-content-length-header-for-chunked-content
+					const contentLength = response.headers.get( 'X-File-Size' ) || response.headers.get( 'Content-Length' );
+					const total = contentLength ? parseInt( contentLength ) : 0;
+					const lengthComputable = total !== 0;
+					let loaded = 0;
+
+					// periodically read data into the new stream tracking while download progress
+					const stream = new ReadableStream( {
+						start( controller ) {
+
+							readData();
+
+							function readData() {
+
+								reader.read().then( ( { done, value } ) => {
+
+									if ( done ) {
+
+										controller.close();
+
+									} else {
+
+										loaded += value.byteLength;
+
+										const event = new ProgressEvent( 'progress', { lengthComputable, loaded, total } );
+										for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
+
+											const callback = callbacks[ i ];
+											if ( callback.onProgress ) callback.onProgress( event );
+
+										}
+
+										controller.enqueue( value );
+										readData();
+
+									}
+
+								}, ( e ) => {
+
+									controller.error( e );
+
+								} );
+
+							}
+
+						}
+
+					} );
+
+					return new Response( stream );
+
+				} else {
+
+					throw new HttpError( `fetch for "${response.url}" responded with ${response.status}: ${response.statusText}`, response );
+
+				}
+
+			} )
+			.then( response => {
+
+				switch ( responseType ) {
+
+					case 'arraybuffer':
+
+						return response.arrayBuffer();
+
+					case 'blob':
+
+						return response.blob();
+
+					case 'document':
+
+						return response.text()
+							.then( text => {
+
+								const parser = new DOMParser();
+								return parser.parseFromString( text, mimeType );
+
+							} );
+
+					case 'json':
+
+						return response.json();
+
+					default:
+
+						if ( mimeType === undefined ) {
+
+							return response.text();
+
+						} else {
+
+							// sniff encoding
+							const re = /charset="?([^;"\s]*)"?/i;
+							const exec = re.exec( mimeType );
+							const label = exec && exec[ 1 ] ? exec[ 1 ].toLowerCase() : undefined;
+							const decoder = new TextDecoder( label );
+							return response.arrayBuffer().then( ab => decoder.decode( ab ) );
+
+						}
+
+				}
+
+			} )
+			.then( data => {
+
+				// Add to cache only on HTTP success, so that we do not cache
+				// error response bodies as proper responses to requests.
+				Cache.add( url, data );
+
+				const callbacks = loading[ url ];
+				delete loading[ url ];
+
+				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
+
+					const callback = callbacks[ i ];
+					if ( callback.onLoad ) callback.onLoad( data );
+
+				}
+
+			} )
+			.catch( err => {
+
+				// Abort errors and other errors are handled the same
+
+				const callbacks = loading[ url ];
+
+				if ( callbacks === undefined ) {
+
+					// When onLoad was called and url was deleted in `loading`
+					this.manager.itemError( url );
+					throw err;
+
+				}
+
+				delete loading[ url ];
+
+				for ( let i = 0, il = callbacks.length; i < il; i ++ ) {
+
+					const callback = callbacks[ i ];
+					if ( callback.onError ) callback.onError( err );
+
+				}
+
+				this.manager.itemError( url );
+
+			} )
+			.finally( () => {
+
+				this.manager.itemEnd( url );
+
+			} );
+
+		this.manager.itemStart( url );
+
+	}
+
+	setResponseType( value ) {
+
+		this.responseType = value;
+		return this;
+
+	}
+
+	setMimeType( value ) {
+
+		this.mimeType = value;
+		return this;
+
+	}
+
+}
+
+class AnimationLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		const scope = this;
+
+		const loader = new FileLoader( this.manager );
+		loader.setPath( this.path );
+		loader.setRequestHeader( this.requestHeader );
+		loader.setWithCredentials( this.withCredentials );
+		loader.load( url, function ( text ) {
+
+			try {
+
+				onLoad( scope.parse( JSON.parse( text ) ) );
+
+			} catch ( e ) {
+
+				if ( onError ) {
+
+					onError( e );
+
+				} else {
+
+					console.error( e );
+
+				}
+
+				scope.manager.itemError( url );
+
+			}
+
+		}, onProgress, onError );
+
+	}
+
+	parse( json ) {
+
+		const animations = [];
+
+		for ( let i = 0; i < json.length; i ++ ) {
+
+			const clip = AnimationClip.parse( json[ i ] );
+
+			animations.push( clip );
+
+		}
+
+		return animations;
+
+	}
+
+}
+
+/**
+ * Abstract Base class to block based textures loader (dds, pvr, ...)
+ *
+ * Sub classes have to implement the parse() method which will be used in load().
+ */
+
+class CompressedTextureLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		const scope = this;
+
+		const images = [];
+
+		const texture = new CompressedTexture();
+
+		const loader = new FileLoader( this.manager );
+		loader.setPath( this.path );
+		loader.setResponseType( 'arraybuffer' );
+		loader.setRequestHeader( this.requestHeader );
+		loader.setWithCredentials( scope.withCredentials );
+
+		let loaded = 0;
+
+		function loadTexture( i ) {
+
+			loader.load( url[ i ], function ( buffer ) {
+
+				const texDatas = scope.parse( buffer, true );
+
+				images[ i ] = {
+					width: texDatas.width,
+					height: texDatas.height,
+					format: texDatas.format,
+					mipmaps: texDatas.mipmaps
+				};
+
+				loaded += 1;
+
+				if ( loaded === 6 ) {
+
+					if ( texDatas.mipmapCount === 1 ) texture.minFilter = LinearFilter;
+
+					texture.image = images;
+					texture.format = texDatas.format;
+					texture.needsUpdate = true;
+
+					if ( onLoad ) onLoad( texture );
+
+				}
+
+			}, onProgress, onError );
+
+		}
+
+		if ( Array.isArray( url ) ) {
+
+			for ( let i = 0, il = url.length; i < il; ++ i ) {
+
+				loadTexture( i );
+
+			}
+
+		} else {
+
+			// compressed cubemap texture stored in a single DDS file
+
+			loader.load( url, function ( buffer ) {
+
+				const texDatas = scope.parse( buffer, true );
+
+				if ( texDatas.isCubemap ) {
+
+					const faces = texDatas.mipmaps.length / texDatas.mipmapCount;
+
+					for ( let f = 0; f < faces; f ++ ) {
+
+						images[ f ] = { mipmaps: [] };
+
+						for ( let i = 0; i < texDatas.mipmapCount; i ++ ) {
+
+							images[ f ].mipmaps.push( texDatas.mipmaps[ f * texDatas.mipmapCount + i ] );
+							images[ f ].format = texDatas.format;
+							images[ f ].width = texDatas.width;
+							images[ f ].height = texDatas.height;
+
+						}
+
+					}
+
+					texture.image = images;
+
+				} else {
+
+					texture.image.width = texDatas.width;
+					texture.image.height = texDatas.height;
+					texture.mipmaps = texDatas.mipmaps;
+
+				}
+
+				if ( texDatas.mipmapCount === 1 ) {
+
+					texture.minFilter = LinearFilter;
+
+				}
+
+				texture.format = texDatas.format;
+				texture.needsUpdate = true;
+
+				if ( onLoad ) onLoad( texture );
+
+			}, onProgress, onError );
+
+		}
+
+		return texture;
+
+	}
+
+}
+
+class ImageLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		if ( this.path !== undefined ) url = this.path + url;
+
+		url = this.manager.resolveURL( url );
+
+		const scope = this;
+
+		const cached = Cache.get( url );
+
+		if ( cached !== undefined ) {
+
+			scope.manager.itemStart( url );
+
+			setTimeout( function () {
+
+				if ( onLoad ) onLoad( cached );
+
+				scope.manager.itemEnd( url );
+
+			}, 0 );
+
+			return cached;
+
+		}
+
+		const image = createElementNS( 'img' );
+
+		function onImageLoad() {
+
+			removeEventListeners();
+
+			Cache.add( url, this );
+
+			if ( onLoad ) onLoad( this );
+
+			scope.manager.itemEnd( url );
+
+		}
+
+		function onImageError( event ) {
+
+			removeEventListeners();
+
+			if ( onError ) onError( event );
+
+			scope.manager.itemError( url );
+			scope.manager.itemEnd( url );
+
+		}
+
+		function removeEventListeners() {
+
+			image.removeEventListener( 'load', onImageLoad, false );
+			image.removeEventListener( 'error', onImageError, false );
+
+		}
+
+		image.addEventListener( 'load', onImageLoad, false );
+		image.addEventListener( 'error', onImageError, false );
+
+		if ( url.slice( 0, 5 ) !== 'data:' ) {
+
+			if ( this.crossOrigin !== undefined ) image.crossOrigin = this.crossOrigin;
+
+		}
+
+		scope.manager.itemStart( url );
+
+		image.src = url;
+
+		return image;
+
+	}
+
+}
+
+class CubeTextureLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+	}
+
+	load( urls, onLoad, onProgress, onError ) {
+
+		const texture = new CubeTexture();
+		texture.colorSpace = SRGBColorSpace;
+
+		const loader = new ImageLoader( this.manager );
+		loader.setCrossOrigin( this.crossOrigin );
+		loader.setPath( this.path );
+
+		let loaded = 0;
+
+		function loadTexture( i ) {
+
+			loader.load( urls[ i ], function ( image ) {
+
+				texture.images[ i ] = image;
+
+				loaded ++;
+
+				if ( loaded === 6 ) {
+
+					texture.needsUpdate = true;
+
+					if ( onLoad ) onLoad( texture );
+
+				}
+
+			}, undefined, onError );
+
+		}
+
+		for ( let i = 0; i < urls.length; ++ i ) {
+
+			loadTexture( i );
+
+		}
+
+		return texture;
+
+	}
+
+}
+
+/**
+ * Abstract Base class to load generic binary textures formats (rgbe, hdr, ...)
+ *
+ * Sub classes have to implement the parse() method which will be used in load().
+ */
+
+class DataTextureLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		const scope = this;
+
+		const texture = new DataTexture();
+
+		const loader = new FileLoader( this.manager );
+		loader.setResponseType( 'arraybuffer' );
+		loader.setRequestHeader( this.requestHeader );
+		loader.setPath( this.path );
+		loader.setWithCredentials( scope.withCredentials );
+		loader.load( url, function ( buffer ) {
+
+			let texData;
+
+			try {
+
+				texData = scope.parse( buffer );
+
+			} catch ( error ) {
+
+				if ( onError !== undefined ) {
+
+					onError( error );
+
+				} else {
+
+					console.error( error );
+					return;
+
+				}
+
+			}
+
+			if ( texData.image !== undefined ) {
+
+				texture.image = texData.image;
+
+			} else if ( texData.data !== undefined ) {
+
+				texture.image.width = texData.width;
+				texture.image.height = texData.height;
+				texture.image.data = texData.data;
+
+			}
+
+			texture.wrapS = texData.wrapS !== undefined ? texData.wrapS : ClampToEdgeWrapping;
+			texture.wrapT = texData.wrapT !== undefined ? texData.wrapT : ClampToEdgeWrapping;
+
+			texture.magFilter = texData.magFilter !== undefined ? texData.magFilter : LinearFilter;
+			texture.minFilter = texData.minFilter !== undefined ? texData.minFilter : LinearFilter;
+
+			texture.anisotropy = texData.anisotropy !== undefined ? texData.anisotropy : 1;
+
+			if ( texData.colorSpace !== undefined ) {
+
+				texture.colorSpace = texData.colorSpace;
+
+			}
+
+			if ( texData.flipY !== undefined ) {
+
+				texture.flipY = texData.flipY;
+
+			}
+
+			if ( texData.format !== undefined ) {
+
+				texture.format = texData.format;
+
+			}
+
+			if ( texData.type !== undefined ) {
+
+				texture.type = texData.type;
+
+			}
+
+			if ( texData.mipmaps !== undefined ) {
+
+				texture.mipmaps = texData.mipmaps;
+				texture.minFilter = LinearMipmapLinearFilter; // presumably...
+
+			}
+
+			if ( texData.mipmapCount === 1 ) {
+
+				texture.minFilter = LinearFilter;
+
+			}
+
+			if ( texData.generateMipmaps !== undefined ) {
+
+				texture.generateMipmaps = texData.generateMipmaps;
+
+			}
+
+			texture.needsUpdate = true;
+
+			if ( onLoad ) onLoad( texture, texData );
+
+		}, onProgress, onError );
+
+
+		return texture;
+
+	}
+
+}
+
+class TextureLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		const texture = new Texture();
+
+		const loader = new ImageLoader( this.manager );
+		loader.setCrossOrigin( this.crossOrigin );
+		loader.setPath( this.path );
+
+		loader.load( url, function ( image ) {
+
+			texture.image = image;
+			texture.needsUpdate = true;
+
+			if ( onLoad !== undefined ) {
+
+				onLoad( texture );
+
+			}
+
+		}, onProgress, onError );
+
+		return texture;
+
+	}
+
+}
+
+class Light extends Object3D {
+
+	constructor( color, intensity = 1 ) {
+
+		super();
+
+		this.isLight = true;
+
+		this.type = 'Light';
+
+		this.color = new Color( color );
+		this.intensity = intensity;
+
+	}
+
+	dispose() {
+
+		// Empty here in base class; some subclasses override.
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.color.copy( source.color );
+		this.intensity = source.intensity;
+
+		return this;
+
+	}
+
+	toJSON( meta ) {
+
+		const data = super.toJSON( meta );
+
+		data.object.color = this.color.getHex();
+		data.object.intensity = this.intensity;
+
+		if ( this.groundColor !== undefined ) data.object.groundColor = this.groundColor.getHex();
+
+		if ( this.distance !== undefined ) data.object.distance = this.distance;
+		if ( this.angle !== undefined ) data.object.angle = this.angle;
+		if ( this.decay !== undefined ) data.object.decay = this.decay;
+		if ( this.penumbra !== undefined ) data.object.penumbra = this.penumbra;
+
+		if ( this.shadow !== undefined ) data.object.shadow = this.shadow.toJSON();
+		if ( this.target !== undefined ) data.object.target = this.target.uuid;
+
+		return data;
+
+	}
+
+}
+
+class HemisphereLight extends Light {
+
+	constructor( skyColor, groundColor, intensity ) {
+
+		super( skyColor, intensity );
+
+		this.isHemisphereLight = true;
+
+		this.type = 'HemisphereLight';
+
+		this.position.copy( Object3D.DEFAULT_UP );
+		this.updateMatrix();
+
+		this.groundColor = new Color( groundColor );
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.groundColor.copy( source.groundColor );
+
+		return this;
+
+	}
+
+}
+
+const _projScreenMatrix$1 = /*@__PURE__*/ new Matrix4();
+const _lightPositionWorld$1 = /*@__PURE__*/ new Vector3();
+const _lookTarget$1 = /*@__PURE__*/ new Vector3();
+
+class LightShadow {
+
+	constructor( camera ) {
+
+		this.camera = camera;
+
+		this.intensity = 1;
+
+		this.bias = 0;
+		this.normalBias = 0;
+		this.radius = 1;
+		this.blurSamples = 8;
+
+		this.mapSize = new Vector2( 512, 512 );
+
+		this.map = null;
+		this.mapPass = null;
+		this.matrix = new Matrix4();
+
+		this.autoUpdate = true;
+		this.needsUpdate = false;
+
+		this._frustum = new Frustum();
+		this._frameExtents = new Vector2( 1, 1 );
+
+		this._viewportCount = 1;
+
+		this._viewports = [
+
+			new Vector4( 0, 0, 1, 1 )
+
+		];
+
+	}
+
+	getViewportCount() {
+
+		return this._viewportCount;
+
+	}
+
+	getFrustum() {
+
+		return this._frustum;
+
+	}
+
+	updateMatrices( light ) {
+
+		const shadowCamera = this.camera;
+		const shadowMatrix = this.matrix;
+
+		_lightPositionWorld$1.setFromMatrixPosition( light.matrixWorld );
+		shadowCamera.position.copy( _lightPositionWorld$1 );
+
+		_lookTarget$1.setFromMatrixPosition( light.target.matrixWorld );
+		shadowCamera.lookAt( _lookTarget$1 );
+		shadowCamera.updateMatrixWorld();
+
+		_projScreenMatrix$1.multiplyMatrices( shadowCamera.projectionMatrix, shadowCamera.matrixWorldInverse );
+		this._frustum.setFromProjectionMatrix( _projScreenMatrix$1 );
+
+		shadowMatrix.set(
+			0.5, 0.0, 0.0, 0.5,
+			0.0, 0.5, 0.0, 0.5,
+			0.0, 0.0, 0.5, 0.5,
+			0.0, 0.0, 0.0, 1.0
+		);
+
+		shadowMatrix.multiply( _projScreenMatrix$1 );
+
+	}
+
+	getViewport( viewportIndex ) {
+
+		return this._viewports[ viewportIndex ];
+
+	}
+
+	getFrameExtents() {
+
+		return this._frameExtents;
+
+	}
+
+	dispose() {
+
+		if ( this.map ) {
+
+			this.map.dispose();
+
+		}
+
+		if ( this.mapPass ) {
+
+			this.mapPass.dispose();
+
+		}
+
+	}
+
+	copy( source ) {
+
+		this.camera = source.camera.clone();
+
+		this.intensity = source.intensity;
+
+		this.bias = source.bias;
+		this.radius = source.radius;
+
+		this.mapSize.copy( source.mapSize );
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+	toJSON() {
+
+		const object = {};
+
+		if ( this.intensity !== 1 ) object.intensity = this.intensity;
+		if ( this.bias !== 0 ) object.bias = this.bias;
+		if ( this.normalBias !== 0 ) object.normalBias = this.normalBias;
+		if ( this.radius !== 1 ) object.radius = this.radius;
+		if ( this.mapSize.x !== 512 || this.mapSize.y !== 512 ) object.mapSize = this.mapSize.toArray();
+
+		object.camera = this.camera.toJSON( false ).object;
+		delete object.camera.matrix;
+
+		return object;
+
+	}
+
+}
+
+class SpotLightShadow extends LightShadow {
+
+	constructor() {
+
+		super( new PerspectiveCamera( 50, 1, 0.5, 500 ) );
+
+		this.isSpotLightShadow = true;
+
+		this.focus = 1;
+
+	}
+
+	updateMatrices( light ) {
+
+		const camera = this.camera;
+
+		const fov = RAD2DEG * 2 * light.angle * this.focus;
+		const aspect = this.mapSize.width / this.mapSize.height;
+		const far = light.distance || camera.far;
+
+		if ( fov !== camera.fov || aspect !== camera.aspect || far !== camera.far ) {
+
+			camera.fov = fov;
+			camera.aspect = aspect;
+			camera.far = far;
+			camera.updateProjectionMatrix();
+
+		}
+
+		super.updateMatrices( light );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.focus = source.focus;
+
+		return this;
+
+	}
+
+}
+
+class SpotLight extends Light {
+
+	constructor( color, intensity, distance = 0, angle = Math.PI / 3, penumbra = 0, decay = 2 ) {
+
+		super( color, intensity );
+
+		this.isSpotLight = true;
+
+		this.type = 'SpotLight';
+
+		this.position.copy( Object3D.DEFAULT_UP );
+		this.updateMatrix();
+
+		this.target = new Object3D();
+
+		this.distance = distance;
+		this.angle = angle;
+		this.penumbra = penumbra;
+		this.decay = decay;
+
+		this.map = null;
+
+		this.shadow = new SpotLightShadow();
+
+	}
+
+	get power() {
+
+		// compute the light's luminous power (in lumens) from its intensity (in candela)
+		// by convention for a spotlight, luminous power (lm) = π * luminous intensity (cd)
+		return this.intensity * Math.PI;
+
+	}
+
+	set power( power ) {
+
+		// set the light's intensity (in candela) from the desired luminous power (in lumens)
+		this.intensity = power / Math.PI;
+
+	}
+
+	dispose() {
+
+		this.shadow.dispose();
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.distance = source.distance;
+		this.angle = source.angle;
+		this.penumbra = source.penumbra;
+		this.decay = source.decay;
+
+		this.target = source.target.clone();
+
+		this.shadow = source.shadow.clone();
+
+		return this;
+
+	}
+
+}
+
+const _projScreenMatrix = /*@__PURE__*/ new Matrix4();
+const _lightPositionWorld = /*@__PURE__*/ new Vector3();
+const _lookTarget = /*@__PURE__*/ new Vector3();
+
+class PointLightShadow extends LightShadow {
+
+	constructor() {
+
+		super( new PerspectiveCamera( 90, 1, 0.5, 500 ) );
+
+		this.isPointLightShadow = true;
+
+		this._frameExtents = new Vector2( 4, 2 );
+
+		this._viewportCount = 6;
+
+		this._viewports = [
+			// These viewports map a cube-map onto a 2D texture with the
+			// following orientation:
+			//
+			//  xzXZ
+			//   y Y
+			//
+			// X - Positive x direction
+			// x - Negative x direction
+			// Y - Positive y direction
+			// y - Negative y direction
+			// Z - Positive z direction
+			// z - Negative z direction
+
+			// positive X
+			new Vector4( 2, 1, 1, 1 ),
+			// negative X
+			new Vector4( 0, 1, 1, 1 ),
+			// positive Z
+			new Vector4( 3, 1, 1, 1 ),
+			// negative Z
+			new Vector4( 1, 1, 1, 1 ),
+			// positive Y
+			new Vector4( 3, 0, 1, 1 ),
+			// negative Y
+			new Vector4( 1, 0, 1, 1 )
+		];
+
+		this._cubeDirections = [
+			new Vector3( 1, 0, 0 ), new Vector3( - 1, 0, 0 ), new Vector3( 0, 0, 1 ),
+			new Vector3( 0, 0, - 1 ), new Vector3( 0, 1, 0 ), new Vector3( 0, - 1, 0 )
+		];
+
+		this._cubeUps = [
+			new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ), new Vector3( 0, 1, 0 ),
+			new Vector3( 0, 1, 0 ), new Vector3( 0, 0, 1 ),	new Vector3( 0, 0, - 1 )
+		];
+
+	}
+
+	updateMatrices( light, viewportIndex = 0 ) {
+
+		const camera = this.camera;
+		const shadowMatrix = this.matrix;
+
+		const far = light.distance || camera.far;
+
+		if ( far !== camera.far ) {
+
+			camera.far = far;
+			camera.updateProjectionMatrix();
+
+		}
+
+		_lightPositionWorld.setFromMatrixPosition( light.matrixWorld );
+		camera.position.copy( _lightPositionWorld );
+
+		_lookTarget.copy( camera.position );
+		_lookTarget.add( this._cubeDirections[ viewportIndex ] );
+		camera.up.copy( this._cubeUps[ viewportIndex ] );
+		camera.lookAt( _lookTarget );
+		camera.updateMatrixWorld();
+
+		shadowMatrix.makeTranslation( - _lightPositionWorld.x, - _lightPositionWorld.y, - _lightPositionWorld.z );
+
+		_projScreenMatrix.multiplyMatrices( camera.projectionMatrix, camera.matrixWorldInverse );
+		this._frustum.setFromProjectionMatrix( _projScreenMatrix );
+
+	}
+
+}
+
+class PointLight extends Light {
+
+	constructor( color, intensity, distance = 0, decay = 2 ) {
+
+		super( color, intensity );
+
+		this.isPointLight = true;
+
+		this.type = 'PointLight';
+
+		this.distance = distance;
+		this.decay = decay;
+
+		this.shadow = new PointLightShadow();
+
+	}
+
+	get power() {
+
+		// compute the light's luminous power (in lumens) from its intensity (in candela)
+		// for an isotropic light source, luminous power (lm) = 4 π luminous intensity (cd)
+		return this.intensity * 4 * Math.PI;
+
+	}
+
+	set power( power ) {
+
+		// set the light's intensity (in candela) from the desired luminous power (in lumens)
+		this.intensity = power / ( 4 * Math.PI );
+
+	}
+
+	dispose() {
+
+		this.shadow.dispose();
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.distance = source.distance;
+		this.decay = source.decay;
+
+		this.shadow = source.shadow.clone();
+
+		return this;
+
+	}
+
+}
+
+class DirectionalLightShadow extends LightShadow {
+
+	constructor() {
+
+		super( new OrthographicCamera( - 5, 5, 5, - 5, 0.5, 500 ) );
+
+		this.isDirectionalLightShadow = true;
+
+	}
+
+}
+
+class DirectionalLight extends Light {
+
+	constructor( color, intensity ) {
+
+		super( color, intensity );
+
+		this.isDirectionalLight = true;
+
+		this.type = 'DirectionalLight';
+
+		this.position.copy( Object3D.DEFAULT_UP );
+		this.updateMatrix();
+
+		this.target = new Object3D();
+
+		this.shadow = new DirectionalLightShadow();
+
+	}
+
+	dispose() {
+
+		this.shadow.dispose();
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.target = source.target.clone();
+		this.shadow = source.shadow.clone();
+
+		return this;
+
+	}
+
+}
+
+class AmbientLight extends Light {
+
+	constructor( color, intensity ) {
+
+		super( color, intensity );
+
+		this.isAmbientLight = true;
+
+		this.type = 'AmbientLight';
+
+	}
+
+}
+
+class RectAreaLight extends Light {
+
+	constructor( color, intensity, width = 10, height = 10 ) {
+
+		super( color, intensity );
+
+		this.isRectAreaLight = true;
+
+		this.type = 'RectAreaLight';
+
+		this.width = width;
+		this.height = height;
+
+	}
+
+	get power() {
+
+		// compute the light's luminous power (in lumens) from its intensity (in nits)
+		return this.intensity * this.width * this.height * Math.PI;
+
+	}
+
+	set power( power ) {
+
+		// set the light's intensity (in nits) from the desired luminous power (in lumens)
+		this.intensity = power / ( this.width * this.height * Math.PI );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.width = source.width;
+		this.height = source.height;
+
+		return this;
+
+	}
+
+	toJSON( meta ) {
+
+		const data = super.toJSON( meta );
+
+		data.object.width = this.width;
+		data.object.height = this.height;
+
+		return data;
+
+	}
+
+}
+
+/**
+ * Primary reference:
+ *   https://graphics.stanford.edu/papers/envmap/envmap.pdf
+ *
+ * Secondary reference:
+ *   https://www.ppsloan.org/publications/StupidSH36.pdf
+ */
+
+// 3-band SH defined by 9 coefficients
+
+class SphericalHarmonics3 {
+
+	constructor() {
+
+		this.isSphericalHarmonics3 = true;
+
+		this.coefficients = [];
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			this.coefficients.push( new Vector3() );
+
+		}
+
+	}
+
+	set( coefficients ) {
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			this.coefficients[ i ].copy( coefficients[ i ] );
+
+		}
+
+		return this;
+
+	}
+
+	zero() {
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			this.coefficients[ i ].set( 0, 0, 0 );
+
+		}
+
+		return this;
+
+	}
+
+	// get the radiance in the direction of the normal
+	// target is a Vector3
+	getAt( normal, target ) {
+
+		// normal is assumed to be unit length
+
+		const x = normal.x, y = normal.y, z = normal.z;
+
+		const coeff = this.coefficients;
+
+		// band 0
+		target.copy( coeff[ 0 ] ).multiplyScalar( 0.282095 );
+
+		// band 1
+		target.addScaledVector( coeff[ 1 ], 0.488603 * y );
+		target.addScaledVector( coeff[ 2 ], 0.488603 * z );
+		target.addScaledVector( coeff[ 3 ], 0.488603 * x );
+
+		// band 2
+		target.addScaledVector( coeff[ 4 ], 1.092548 * ( x * y ) );
+		target.addScaledVector( coeff[ 5 ], 1.092548 * ( y * z ) );
+		target.addScaledVector( coeff[ 6 ], 0.315392 * ( 3.0 * z * z - 1.0 ) );
+		target.addScaledVector( coeff[ 7 ], 1.092548 * ( x * z ) );
+		target.addScaledVector( coeff[ 8 ], 0.546274 * ( x * x - y * y ) );
+
+		return target;
+
+	}
+
+	// get the irradiance (radiance convolved with cosine lobe) in the direction of the normal
+	// target is a Vector3
+	// https://graphics.stanford.edu/papers/envmap/envmap.pdf
+	getIrradianceAt( normal, target ) {
+
+		// normal is assumed to be unit length
+
+		const x = normal.x, y = normal.y, z = normal.z;
+
+		const coeff = this.coefficients;
+
+		// band 0
+		target.copy( coeff[ 0 ] ).multiplyScalar( 0.886227 ); // π * 0.282095
+
+		// band 1
+		target.addScaledVector( coeff[ 1 ], 2.0 * 0.511664 * y ); // ( 2 * π / 3 ) * 0.488603
+		target.addScaledVector( coeff[ 2 ], 2.0 * 0.511664 * z );
+		target.addScaledVector( coeff[ 3 ], 2.0 * 0.511664 * x );
+
+		// band 2
+		target.addScaledVector( coeff[ 4 ], 2.0 * 0.429043 * x * y ); // ( π / 4 ) * 1.092548
+		target.addScaledVector( coeff[ 5 ], 2.0 * 0.429043 * y * z );
+		target.addScaledVector( coeff[ 6 ], 0.743125 * z * z - 0.247708 ); // ( π / 4 ) * 0.315392 * 3
+		target.addScaledVector( coeff[ 7 ], 2.0 * 0.429043 * x * z );
+		target.addScaledVector( coeff[ 8 ], 0.429043 * ( x * x - y * y ) ); // ( π / 4 ) * 0.546274
+
+		return target;
+
+	}
+
+	add( sh ) {
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			this.coefficients[ i ].add( sh.coefficients[ i ] );
+
+		}
+
+		return this;
+
+	}
+
+	addScaledSH( sh, s ) {
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			this.coefficients[ i ].addScaledVector( sh.coefficients[ i ], s );
+
+		}
+
+		return this;
+
+	}
+
+	scale( s ) {
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			this.coefficients[ i ].multiplyScalar( s );
+
+		}
+
+		return this;
+
+	}
+
+	lerp( sh, alpha ) {
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			this.coefficients[ i ].lerp( sh.coefficients[ i ], alpha );
+
+		}
+
+		return this;
+
+	}
+
+	equals( sh ) {
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			if ( ! this.coefficients[ i ].equals( sh.coefficients[ i ] ) ) {
+
+				return false;
+
+			}
+
+		}
+
+		return true;
+
+	}
+
+	copy( sh ) {
+
+		return this.set( sh.coefficients );
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+	fromArray( array, offset = 0 ) {
+
+		const coefficients = this.coefficients;
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			coefficients[ i ].fromArray( array, offset + ( i * 3 ) );
+
+		}
+
+		return this;
+
+	}
+
+	toArray( array = [], offset = 0 ) {
+
+		const coefficients = this.coefficients;
+
+		for ( let i = 0; i < 9; i ++ ) {
+
+			coefficients[ i ].toArray( array, offset + ( i * 3 ) );
+
+		}
+
+		return array;
+
+	}
+
+	// evaluate the basis functions
+	// shBasis is an Array[ 9 ]
+	static getBasisAt( normal, shBasis ) {
+
+		// normal is assumed to be unit length
+
+		const x = normal.x, y = normal.y, z = normal.z;
+
+		// band 0
+		shBasis[ 0 ] = 0.282095;
+
+		// band 1
+		shBasis[ 1 ] = 0.488603 * y;
+		shBasis[ 2 ] = 0.488603 * z;
+		shBasis[ 3 ] = 0.488603 * x;
+
+		// band 2
+		shBasis[ 4 ] = 1.092548 * x * y;
+		shBasis[ 5 ] = 1.092548 * y * z;
+		shBasis[ 6 ] = 0.315392 * ( 3 * z * z - 1 );
+		shBasis[ 7 ] = 1.092548 * x * z;
+		shBasis[ 8 ] = 0.546274 * ( x * x - y * y );
+
+	}
+
+}
+
+class LightProbe extends Light {
+
+	constructor( sh = new SphericalHarmonics3(), intensity = 1 ) {
+
+		super( undefined, intensity );
+
+		this.isLightProbe = true;
+
+		this.sh = sh;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.sh.copy( source.sh );
+
+		return this;
+
+	}
+
+	fromJSON( json ) {
+
+		this.intensity = json.intensity; // TODO: Move this bit to Light.fromJSON();
+		this.sh.fromArray( json.sh );
+
+		return this;
+
+	}
+
+	toJSON( meta ) {
+
+		const data = super.toJSON( meta );
+
+		data.object.sh = this.sh.toArray();
+
+		return data;
+
+	}
+
+}
+
+class MaterialLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+		this.textures = {};
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		const scope = this;
+
+		const loader = new FileLoader( scope.manager );
+		loader.setPath( scope.path );
+		loader.setRequestHeader( scope.requestHeader );
+		loader.setWithCredentials( scope.withCredentials );
+		loader.load( url, function ( text ) {
+
+			try {
+
+				onLoad( scope.parse( JSON.parse( text ) ) );
+
+			} catch ( e ) {
+
+				if ( onError ) {
+
+					onError( e );
+
+				} else {
+
+					console.error( e );
+
+				}
+
+				scope.manager.itemError( url );
+
+			}
+
+		}, onProgress, onError );
+
+	}
+
+	parse( json ) {
+
+		const textures = this.textures;
+
+		function getTexture( name ) {
+
+			if ( textures[ name ] === undefined ) {
+
+				console.warn( 'THREE.MaterialLoader: Undefined texture', name );
+
+			}
+
+			return textures[ name ];
+
+		}
+
+		const material = MaterialLoader.createMaterialFromType( json.type );
+
+		if ( json.uuid !== undefined ) material.uuid = json.uuid;
+		if ( json.name !== undefined ) material.name = json.name;
+		if ( json.color !== undefined && material.color !== undefined ) material.color.setHex( json.color );
+		if ( json.roughness !== undefined ) material.roughness = json.roughness;
+		if ( json.metalness !== undefined ) material.metalness = json.metalness;
+		if ( json.sheen !== undefined ) material.sheen = json.sheen;
+		if ( json.sheenColor !== undefined ) material.sheenColor = new Color().setHex( json.sheenColor );
+		if ( json.sheenRoughness !== undefined ) material.sheenRoughness = json.sheenRoughness;
+		if ( json.emissive !== undefined && material.emissive !== undefined ) material.emissive.setHex( json.emissive );
+		if ( json.specular !== undefined && material.specular !== undefined ) material.specular.setHex( json.specular );
+		if ( json.specularIntensity !== undefined ) material.specularIntensity = json.specularIntensity;
+		if ( json.specularColor !== undefined && material.specularColor !== undefined ) material.specularColor.setHex( json.specularColor );
+		if ( json.shininess !== undefined ) material.shininess = json.shininess;
+		if ( json.clearcoat !== undefined ) material.clearcoat = json.clearcoat;
+		if ( json.clearcoatRoughness !== undefined ) material.clearcoatRoughness = json.clearcoatRoughness;
+		if ( json.dispersion !== undefined ) material.dispersion = json.dispersion;
+		if ( json.iridescence !== undefined ) material.iridescence = json.iridescence;
+		if ( json.iridescenceIOR !== undefined ) material.iridescenceIOR = json.iridescenceIOR;
+		if ( json.iridescenceThicknessRange !== undefined ) material.iridescenceThicknessRange = json.iridescenceThicknessRange;
+		if ( json.transmission !== undefined ) material.transmission = json.transmission;
+		if ( json.thickness !== undefined ) material.thickness = json.thickness;
+		if ( json.attenuationDistance !== undefined ) material.attenuationDistance = json.attenuationDistance;
+		if ( json.attenuationColor !== undefined && material.attenuationColor !== undefined ) material.attenuationColor.setHex( json.attenuationColor );
+		if ( json.anisotropy !== undefined ) material.anisotropy = json.anisotropy;
+		if ( json.anisotropyRotation !== undefined ) material.anisotropyRotation = json.anisotropyRotation;
+		if ( json.fog !== undefined ) material.fog = json.fog;
+		if ( json.flatShading !== undefined ) material.flatShading = json.flatShading;
+		if ( json.blending !== undefined ) material.blending = json.blending;
+		if ( json.combine !== undefined ) material.combine = json.combine;
+		if ( json.side !== undefined ) material.side = json.side;
+		if ( json.shadowSide !== undefined ) material.shadowSide = json.shadowSide;
+		if ( json.opacity !== undefined ) material.opacity = json.opacity;
+		if ( json.transparent !== undefined ) material.transparent = json.transparent;
+		if ( json.alphaTest !== undefined ) material.alphaTest = json.alphaTest;
+		if ( json.alphaHash !== undefined ) material.alphaHash = json.alphaHash;
+		if ( json.depthFunc !== undefined ) material.depthFunc = json.depthFunc;
+		if ( json.depthTest !== undefined ) material.depthTest = json.depthTest;
+		if ( json.depthWrite !== undefined ) material.depthWrite = json.depthWrite;
+		if ( json.colorWrite !== undefined ) material.colorWrite = json.colorWrite;
+		if ( json.blendSrc !== undefined ) material.blendSrc = json.blendSrc;
+		if ( json.blendDst !== undefined ) material.blendDst = json.blendDst;
+		if ( json.blendEquation !== undefined ) material.blendEquation = json.blendEquation;
+		if ( json.blendSrcAlpha !== undefined ) material.blendSrcAlpha = json.blendSrcAlpha;
+		if ( json.blendDstAlpha !== undefined ) material.blendDstAlpha = json.blendDstAlpha;
+		if ( json.blendEquationAlpha !== undefined ) material.blendEquationAlpha = json.blendEquationAlpha;
+		if ( json.blendColor !== undefined && material.blendColor !== undefined ) material.blendColor.setHex( json.blendColor );
+		if ( json.blendAlpha !== undefined ) material.blendAlpha = json.blendAlpha;
+		if ( json.stencilWriteMask !== undefined ) material.stencilWriteMask = json.stencilWriteMask;
+		if ( json.stencilFunc !== undefined ) material.stencilFunc = json.stencilFunc;
+		if ( json.stencilRef !== undefined ) material.stencilRef = json.stencilRef;
+		if ( json.stencilFuncMask !== undefined ) material.stencilFuncMask = json.stencilFuncMask;
+		if ( json.stencilFail !== undefined ) material.stencilFail = json.stencilFail;
+		if ( json.stencilZFail !== undefined ) material.stencilZFail = json.stencilZFail;
+		if ( json.stencilZPass !== undefined ) material.stencilZPass = json.stencilZPass;
+		if ( json.stencilWrite !== undefined ) material.stencilWrite = json.stencilWrite;
+
+		if ( json.wireframe !== undefined ) material.wireframe = json.wireframe;
+		if ( json.wireframeLinewidth !== undefined ) material.wireframeLinewidth = json.wireframeLinewidth;
+		if ( json.wireframeLinecap !== undefined ) material.wireframeLinecap = json.wireframeLinecap;
+		if ( json.wireframeLinejoin !== undefined ) material.wireframeLinejoin = json.wireframeLinejoin;
+
+		if ( json.rotation !== undefined ) material.rotation = json.rotation;
+
+		if ( json.linewidth !== undefined ) material.linewidth = json.linewidth;
+		if ( json.dashSize !== undefined ) material.dashSize = json.dashSize;
+		if ( json.gapSize !== undefined ) material.gapSize = json.gapSize;
+		if ( json.scale !== undefined ) material.scale = json.scale;
+
+		if ( json.polygonOffset !== undefined ) material.polygonOffset = json.polygonOffset;
+		if ( json.polygonOffsetFactor !== undefined ) material.polygonOffsetFactor = json.polygonOffsetFactor;
+		if ( json.polygonOffsetUnits !== undefined ) material.polygonOffsetUnits = json.polygonOffsetUnits;
+
+		if ( json.dithering !== undefined ) material.dithering = json.dithering;
+
+		if ( json.alphaToCoverage !== undefined ) material.alphaToCoverage = json.alphaToCoverage;
+		if ( json.premultipliedAlpha !== undefined ) material.premultipliedAlpha = json.premultipliedAlpha;
+		if ( json.forceSinglePass !== undefined ) material.forceSinglePass = json.forceSinglePass;
+
+		if ( json.visible !== undefined ) material.visible = json.visible;
+
+		if ( json.toneMapped !== undefined ) material.toneMapped = json.toneMapped;
+
+		if ( json.userData !== undefined ) material.userData = json.userData;
+
+		if ( json.vertexColors !== undefined ) {
+
+			if ( typeof json.vertexColors === 'number' ) {
+
+				material.vertexColors = ( json.vertexColors > 0 ) ? true : false;
+
+			} else {
+
+				material.vertexColors = json.vertexColors;
+
+			}
+
+		}
+
+		// Shader Material
+
+		if ( json.uniforms !== undefined ) {
+
+			for ( const name in json.uniforms ) {
+
+				const uniform = json.uniforms[ name ];
+
+				material.uniforms[ name ] = {};
+
+				switch ( uniform.type ) {
+
+					case 't':
+						material.uniforms[ name ].value = getTexture( uniform.value );
+						break;
+
+					case 'c':
+						material.uniforms[ name ].value = new Color().setHex( uniform.value );
+						break;
+
+					case 'v2':
+						material.uniforms[ name ].value = new Vector2().fromArray( uniform.value );
+						break;
+
+					case 'v3':
+						material.uniforms[ name ].value = new Vector3().fromArray( uniform.value );
+						break;
+
+					case 'v4':
+						material.uniforms[ name ].value = new Vector4().fromArray( uniform.value );
+						break;
+
+					case 'm3':
+						material.uniforms[ name ].value = new Matrix3().fromArray( uniform.value );
+						break;
+
+					case 'm4':
+						material.uniforms[ name ].value = new Matrix4().fromArray( uniform.value );
+						break;
+
+					default:
+						material.uniforms[ name ].value = uniform.value;
+
+				}
+
+			}
+
+		}
+
+		if ( json.defines !== undefined ) material.defines = json.defines;
+		if ( json.vertexShader !== undefined ) material.vertexShader = json.vertexShader;
+		if ( json.fragmentShader !== undefined ) material.fragmentShader = json.fragmentShader;
+		if ( json.glslVersion !== undefined ) material.glslVersion = json.glslVersion;
+
+		if ( json.extensions !== undefined ) {
+
+			for ( const key in json.extensions ) {
+
+				material.extensions[ key ] = json.extensions[ key ];
+
+			}
+
+		}
+
+		if ( json.lights !== undefined ) material.lights = json.lights;
+		if ( json.clipping !== undefined ) material.clipping = json.clipping;
+
+		// for PointsMaterial
+
+		if ( json.size !== undefined ) material.size = json.size;
+		if ( json.sizeAttenuation !== undefined ) material.sizeAttenuation = json.sizeAttenuation;
+
+		// maps
+
+		if ( json.map !== undefined ) material.map = getTexture( json.map );
+		if ( json.matcap !== undefined ) material.matcap = getTexture( json.matcap );
+
+		if ( json.alphaMap !== undefined ) material.alphaMap = getTexture( json.alphaMap );
+
+		if ( json.bumpMap !== undefined ) material.bumpMap = getTexture( json.bumpMap );
+		if ( json.bumpScale !== undefined ) material.bumpScale = json.bumpScale;
+
+		if ( json.normalMap !== undefined ) material.normalMap = getTexture( json.normalMap );
+		if ( json.normalMapType !== undefined ) material.normalMapType = json.normalMapType;
+		if ( json.normalScale !== undefined ) {
+
+			let normalScale = json.normalScale;
+
+			if ( Array.isArray( normalScale ) === false ) {
+
+				// Blender exporter used to export a scalar. See #7459
+
+				normalScale = [ normalScale, normalScale ];
+
+			}
+
+			material.normalScale = new Vector2().fromArray( normalScale );
+
+		}
+
+		if ( json.displacementMap !== undefined ) material.displacementMap = getTexture( json.displacementMap );
+		if ( json.displacementScale !== undefined ) material.displacementScale = json.displacementScale;
+		if ( json.displacementBias !== undefined ) material.displacementBias = json.displacementBias;
+
+		if ( json.roughnessMap !== undefined ) material.roughnessMap = getTexture( json.roughnessMap );
+		if ( json.metalnessMap !== undefined ) material.metalnessMap = getTexture( json.metalnessMap );
+
+		if ( json.emissiveMap !== undefined ) material.emissiveMap = getTexture( json.emissiveMap );
+		if ( json.emissiveIntensity !== undefined ) material.emissiveIntensity = json.emissiveIntensity;
+
+		if ( json.specularMap !== undefined ) material.specularMap = getTexture( json.specularMap );
+		if ( json.specularIntensityMap !== undefined ) material.specularIntensityMap = getTexture( json.specularIntensityMap );
+		if ( json.specularColorMap !== undefined ) material.specularColorMap = getTexture( json.specularColorMap );
+
+		if ( json.envMap !== undefined ) material.envMap = getTexture( json.envMap );
+		if ( json.envMapRotation !== undefined ) material.envMapRotation.fromArray( json.envMapRotation );
+		if ( json.envMapIntensity !== undefined ) material.envMapIntensity = json.envMapIntensity;
+
+		if ( json.reflectivity !== undefined ) material.reflectivity = json.reflectivity;
+		if ( json.refractionRatio !== undefined ) material.refractionRatio = json.refractionRatio;
+
+		if ( json.lightMap !== undefined ) material.lightMap = getTexture( json.lightMap );
+		if ( json.lightMapIntensity !== undefined ) material.lightMapIntensity = json.lightMapIntensity;
+
+		if ( json.aoMap !== undefined ) material.aoMap = getTexture( json.aoMap );
+		if ( json.aoMapIntensity !== undefined ) material.aoMapIntensity = json.aoMapIntensity;
+
+		if ( json.gradientMap !== undefined ) material.gradientMap = getTexture( json.gradientMap );
+
+		if ( json.clearcoatMap !== undefined ) material.clearcoatMap = getTexture( json.clearcoatMap );
+		if ( json.clearcoatRoughnessMap !== undefined ) material.clearcoatRoughnessMap = getTexture( json.clearcoatRoughnessMap );
+		if ( json.clearcoatNormalMap !== undefined ) material.clearcoatNormalMap = getTexture( json.clearcoatNormalMap );
+		if ( json.clearcoatNormalScale !== undefined ) material.clearcoatNormalScale = new Vector2().fromArray( json.clearcoatNormalScale );
+
+		if ( json.iridescenceMap !== undefined ) material.iridescenceMap = getTexture( json.iridescenceMap );
+		if ( json.iridescenceThicknessMap !== undefined ) material.iridescenceThicknessMap = getTexture( json.iridescenceThicknessMap );
+
+		if ( json.transmissionMap !== undefined ) material.transmissionMap = getTexture( json.transmissionMap );
+		if ( json.thicknessMap !== undefined ) material.thicknessMap = getTexture( json.thicknessMap );
+
+		if ( json.anisotropyMap !== undefined ) material.anisotropyMap = getTexture( json.anisotropyMap );
+
+		if ( json.sheenColorMap !== undefined ) material.sheenColorMap = getTexture( json.sheenColorMap );
+		if ( json.sheenRoughnessMap !== undefined ) material.sheenRoughnessMap = getTexture( json.sheenRoughnessMap );
+
+		return material;
+
+	}
+
+	setTextures( value ) {
+
+		this.textures = value;
+		return this;
+
+	}
+
+	static createMaterialFromType( type ) {
+
+		const materialLib = {
+			ShadowMaterial,
+			SpriteMaterial,
+			RawShaderMaterial,
+			ShaderMaterial,
+			PointsMaterial,
+			MeshPhysicalMaterial,
+			MeshStandardMaterial,
+			MeshPhongMaterial,
+			MeshToonMaterial,
+			MeshNormalMaterial,
+			MeshLambertMaterial,
+			MeshDepthMaterial,
+			MeshDistanceMaterial,
+			MeshBasicMaterial,
+			MeshMatcapMaterial,
+			LineDashedMaterial,
+			LineBasicMaterial,
+			Material
+		};
+
+		return new materialLib[ type ]();
+
+	}
+
+}
+
+class LoaderUtils {
+
+	static decodeText( array ) { // @deprecated, r165
+
+		console.warn( 'THREE.LoaderUtils: decodeText() has been deprecated with r165 and will be removed with r175. Use TextDecoder instead.' );
+
+		if ( typeof TextDecoder !== 'undefined' ) {
+
+			return new TextDecoder().decode( array );
+
+		}
+
+		// Avoid the String.fromCharCode.apply(null, array) shortcut, which
+		// throws a "maximum call stack size exceeded" error for large arrays.
+
+		let s = '';
+
+		for ( let i = 0, il = array.length; i < il; i ++ ) {
+
+			// Implicitly assumes little-endian.
+			s += String.fromCharCode( array[ i ] );
+
+		}
+
+		try {
+
+			// merges multi-byte utf-8 characters.
+
+			return decodeURIComponent( escape( s ) );
+
+		} catch ( e ) { // see #16358
+
+			return s;
+
+		}
+
+	}
+
+	static extractUrlBase( url ) {
+
+		const index = url.lastIndexOf( '/' );
+
+		if ( index === - 1 ) return './';
+
+		return url.slice( 0, index + 1 );
+
+	}
+
+	static resolveURL( url, path ) {
+
+		// Invalid URL
+		if ( typeof url !== 'string' || url === '' ) return '';
+
+		// Host Relative URL
+		if ( /^https?:\/\//i.test( path ) && /^\//.test( url ) ) {
+
+			path = path.replace( /(^https?:\/\/[^\/]+).*/i, '$1' );
+
+		}
+
+		// Absolute URL http://,https://,//
+		if ( /^(https?:)?\/\//i.test( url ) ) return url;
+
+		// Data URI
+		if ( /^data:.*,.*$/i.test( url ) ) return url;
+
+		// Blob URL
+		if ( /^blob:.*$/i.test( url ) ) return url;
+
+		// Relative URL
+		return path + url;
+
+	}
+
+}
+
+class InstancedBufferGeometry extends BufferGeometry {
+
+	constructor() {
+
+		super();
+
+		this.isInstancedBufferGeometry = true;
+
+		this.type = 'InstancedBufferGeometry';
+		this.instanceCount = Infinity;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.instanceCount = source.instanceCount;
+
+		return this;
+
+	}
+
+	toJSON() {
+
+		const data = super.toJSON();
+
+		data.instanceCount = this.instanceCount;
+
+		data.isInstancedBufferGeometry = true;
+
+		return data;
+
+	}
+
+}
+
+class BufferGeometryLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		const scope = this;
+
+		const loader = new FileLoader( scope.manager );
+		loader.setPath( scope.path );
+		loader.setRequestHeader( scope.requestHeader );
+		loader.setWithCredentials( scope.withCredentials );
+		loader.load( url, function ( text ) {
+
+			try {
+
+				onLoad( scope.parse( JSON.parse( text ) ) );
+
+			} catch ( e ) {
+
+				if ( onError ) {
+
+					onError( e );
+
+				} else {
+
+					console.error( e );
+
+				}
+
+				scope.manager.itemError( url );
+
+			}
+
+		}, onProgress, onError );
+
+	}
+
+	parse( json ) {
+
+		const interleavedBufferMap = {};
+		const arrayBufferMap = {};
+
+		function getInterleavedBuffer( json, uuid ) {
+
+			if ( interleavedBufferMap[ uuid ] !== undefined ) return interleavedBufferMap[ uuid ];
+
+			const interleavedBuffers = json.interleavedBuffers;
+			const interleavedBuffer = interleavedBuffers[ uuid ];
+
+			const buffer = getArrayBuffer( json, interleavedBuffer.buffer );
+
+			const array = getTypedArray( interleavedBuffer.type, buffer );
+			const ib = new InterleavedBuffer( array, interleavedBuffer.stride );
+			ib.uuid = interleavedBuffer.uuid;
+
+			interleavedBufferMap[ uuid ] = ib;
+
+			return ib;
+
+		}
+
+		function getArrayBuffer( json, uuid ) {
+
+			if ( arrayBufferMap[ uuid ] !== undefined ) return arrayBufferMap[ uuid ];
+
+			const arrayBuffers = json.arrayBuffers;
+			const arrayBuffer = arrayBuffers[ uuid ];
+
+			const ab = new Uint32Array( arrayBuffer ).buffer;
+
+			arrayBufferMap[ uuid ] = ab;
+
+			return ab;
+
+		}
+
+		const geometry = json.isInstancedBufferGeometry ? new InstancedBufferGeometry() : new BufferGeometry();
+
+		const index = json.data.index;
+
+		if ( index !== undefined ) {
+
+			const typedArray = getTypedArray( index.type, index.array );
+			geometry.setIndex( new BufferAttribute( typedArray, 1 ) );
+
+		}
+
+		const attributes = json.data.attributes;
+
+		for ( const key in attributes ) {
+
+			const attribute = attributes[ key ];
+			let bufferAttribute;
+
+			if ( attribute.isInterleavedBufferAttribute ) {
+
+				const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
+				bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );
+
+			} else {
+
+				const typedArray = getTypedArray( attribute.type, attribute.array );
+				const bufferAttributeConstr = attribute.isInstancedBufferAttribute ? InstancedBufferAttribute : BufferAttribute;
+				bufferAttribute = new bufferAttributeConstr( typedArray, attribute.itemSize, attribute.normalized );
+
+			}
+
+			if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
+			if ( attribute.usage !== undefined ) bufferAttribute.setUsage( attribute.usage );
+
+			geometry.setAttribute( key, bufferAttribute );
+
+		}
+
+		const morphAttributes = json.data.morphAttributes;
+
+		if ( morphAttributes ) {
+
+			for ( const key in morphAttributes ) {
+
+				const attributeArray = morphAttributes[ key ];
+
+				const array = [];
+
+				for ( let i = 0, il = attributeArray.length; i < il; i ++ ) {
+
+					const attribute = attributeArray[ i ];
+					let bufferAttribute;
+
+					if ( attribute.isInterleavedBufferAttribute ) {
+
+						const interleavedBuffer = getInterleavedBuffer( json.data, attribute.data );
+						bufferAttribute = new InterleavedBufferAttribute( interleavedBuffer, attribute.itemSize, attribute.offset, attribute.normalized );
+
+					} else {
+
+						const typedArray = getTypedArray( attribute.type, attribute.array );
+						bufferAttribute = new BufferAttribute( typedArray, attribute.itemSize, attribute.normalized );
+
+					}
+
+					if ( attribute.name !== undefined ) bufferAttribute.name = attribute.name;
+					array.push( bufferAttribute );
+
+				}
+
+				geometry.morphAttributes[ key ] = array;
+
+			}
+
+		}
+
+		const morphTargetsRelative = json.data.morphTargetsRelative;
+
+		if ( morphTargetsRelative ) {
+
+			geometry.morphTargetsRelative = true;
+
+		}
+
+		const groups = json.data.groups || json.data.drawcalls || json.data.offsets;
+
+		if ( groups !== undefined ) {
+
+			for ( let i = 0, n = groups.length; i !== n; ++ i ) {
+
+				const group = groups[ i ];
+
+				geometry.addGroup( group.start, group.count, group.materialIndex );
+
+			}
+
+		}
+
+		const boundingSphere = json.data.boundingSphere;
+
+		if ( boundingSphere !== undefined ) {
+
+			const center = new Vector3();
+
+			if ( boundingSphere.center !== undefined ) {
+
+				center.fromArray( boundingSphere.center );
+
+			}
+
+			geometry.boundingSphere = new Sphere( center, boundingSphere.radius );
+
+		}
+
+		if ( json.name ) geometry.name = json.name;
+		if ( json.userData ) geometry.userData = json.userData;
+
+		return geometry;
+
+	}
+
+}
+
+class ObjectLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		const scope = this;
+
+		const path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;
+		this.resourcePath = this.resourcePath || path;
+
+		const loader = new FileLoader( this.manager );
+		loader.setPath( this.path );
+		loader.setRequestHeader( this.requestHeader );
+		loader.setWithCredentials( this.withCredentials );
+		loader.load( url, function ( text ) {
+
+			let json = null;
+
+			try {
+
+				json = JSON.parse( text );
+
+			} catch ( error ) {
+
+				if ( onError !== undefined ) onError( error );
+
+				console.error( 'THREE:ObjectLoader: Can\'t parse ' + url + '.', error.message );
+
+				return;
+
+			}
+
+			const metadata = json.metadata;
+
+			if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {
+
+				if ( onError !== undefined ) onError( new Error( 'THREE.ObjectLoader: Can\'t load ' + url ) );
+
+				console.error( 'THREE.ObjectLoader: Can\'t load ' + url );
+				return;
+
+			}
+
+			scope.parse( json, onLoad );
+
+		}, onProgress, onError );
+
+	}
+
+	async loadAsync( url, onProgress ) {
+
+		const scope = this;
+
+		const path = ( this.path === '' ) ? LoaderUtils.extractUrlBase( url ) : this.path;
+		this.resourcePath = this.resourcePath || path;
+
+		const loader = new FileLoader( this.manager );
+		loader.setPath( this.path );
+		loader.setRequestHeader( this.requestHeader );
+		loader.setWithCredentials( this.withCredentials );
+
+		const text = await loader.loadAsync( url, onProgress );
+
+		const json = JSON.parse( text );
+
+		const metadata = json.metadata;
+
+		if ( metadata === undefined || metadata.type === undefined || metadata.type.toLowerCase() === 'geometry' ) {
+
+			throw new Error( 'THREE.ObjectLoader: Can\'t load ' + url );
+
+		}
+
+		return await scope.parseAsync( json );
+
+	}
+
+	parse( json, onLoad ) {
+
+		const animations = this.parseAnimations( json.animations );
+		const shapes = this.parseShapes( json.shapes );
+		const geometries = this.parseGeometries( json.geometries, shapes );
+
+		const images = this.parseImages( json.images, function () {
+
+			if ( onLoad !== undefined ) onLoad( object );
+
+		} );
+
+		const textures = this.parseTextures( json.textures, images );
+		const materials = this.parseMaterials( json.materials, textures );
+
+		const object = this.parseObject( json.object, geometries, materials, textures, animations );
+		const skeletons = this.parseSkeletons( json.skeletons, object );
+
+		this.bindSkeletons( object, skeletons );
+		this.bindLightTargets( object );
+
+		//
+
+		if ( onLoad !== undefined ) {
+
+			let hasImages = false;
+
+			for ( const uuid in images ) {
+
+				if ( images[ uuid ].data instanceof HTMLImageElement ) {
+
+					hasImages = true;
+					break;
+
+				}
+
+			}
+
+			if ( hasImages === false ) onLoad( object );
+
+		}
+
+		return object;
+
+	}
+
+	async parseAsync( json ) {
+
+		const animations = this.parseAnimations( json.animations );
+		const shapes = this.parseShapes( json.shapes );
+		const geometries = this.parseGeometries( json.geometries, shapes );
+
+		const images = await this.parseImagesAsync( json.images );
+
+		const textures = this.parseTextures( json.textures, images );
+		const materials = this.parseMaterials( json.materials, textures );
+
+		const object = this.parseObject( json.object, geometries, materials, textures, animations );
+		const skeletons = this.parseSkeletons( json.skeletons, object );
+
+		this.bindSkeletons( object, skeletons );
+		this.bindLightTargets( object );
+
+		return object;
+
+	}
+
+	parseShapes( json ) {
+
+		const shapes = {};
+
+		if ( json !== undefined ) {
+
+			for ( let i = 0, l = json.length; i < l; i ++ ) {
+
+				const shape = new Shape().fromJSON( json[ i ] );
+
+				shapes[ shape.uuid ] = shape;
+
+			}
+
+		}
+
+		return shapes;
+
+	}
+
+	parseSkeletons( json, object ) {
+
+		const skeletons = {};
+		const bones = {};
+
+		// generate bone lookup table
+
+		object.traverse( function ( child ) {
+
+			if ( child.isBone ) bones[ child.uuid ] = child;
+
+		} );
+
+		// create skeletons
+
+		if ( json !== undefined ) {
+
+			for ( let i = 0, l = json.length; i < l; i ++ ) {
+
+				const skeleton = new Skeleton().fromJSON( json[ i ], bones );
+
+				skeletons[ skeleton.uuid ] = skeleton;
+
+			}
+
+		}
+
+		return skeletons;
+
+	}
+
+	parseGeometries( json, shapes ) {
+
+		const geometries = {};
+
+		if ( json !== undefined ) {
+
+			const bufferGeometryLoader = new BufferGeometryLoader();
+
+			for ( let i = 0, l = json.length; i < l; i ++ ) {
+
+				let geometry;
+				const data = json[ i ];
+
+				switch ( data.type ) {
+
+					case 'BufferGeometry':
+					case 'InstancedBufferGeometry':
+
+						geometry = bufferGeometryLoader.parse( data );
+						break;
+
+					default:
+
+						if ( data.type in Geometries ) {
+
+							geometry = Geometries[ data.type ].fromJSON( data, shapes );
+
+						} else {
+
+							console.warn( `THREE.ObjectLoader: Unsupported geometry type "${ data.type }"` );
+
+						}
+
+				}
+
+				geometry.uuid = data.uuid;
+
+				if ( data.name !== undefined ) geometry.name = data.name;
+				if ( data.userData !== undefined ) geometry.userData = data.userData;
+
+				geometries[ data.uuid ] = geometry;
+
+			}
+
+		}
+
+		return geometries;
+
+	}
+
+	parseMaterials( json, textures ) {
+
+		const cache = {}; // MultiMaterial
+		const materials = {};
+
+		if ( json !== undefined ) {
+
+			const loader = new MaterialLoader();
+			loader.setTextures( textures );
+
+			for ( let i = 0, l = json.length; i < l; i ++ ) {
+
+				const data = json[ i ];
+
+				if ( cache[ data.uuid ] === undefined ) {
+
+					cache[ data.uuid ] = loader.parse( data );
+
+				}
+
+				materials[ data.uuid ] = cache[ data.uuid ];
+
+			}
+
+		}
+
+		return materials;
+
+	}
+
+	parseAnimations( json ) {
+
+		const animations = {};
+
+		if ( json !== undefined ) {
+
+			for ( let i = 0; i < json.length; i ++ ) {
+
+				const data = json[ i ];
+
+				const clip = AnimationClip.parse( data );
+
+				animations[ clip.uuid ] = clip;
+
+			}
+
+		}
+
+		return animations;
+
+	}
+
+	parseImages( json, onLoad ) {
+
+		const scope = this;
+		const images = {};
+
+		let loader;
+
+		function loadImage( url ) {
+
+			scope.manager.itemStart( url );
+
+			return loader.load( url, function () {
+
+				scope.manager.itemEnd( url );
+
+			}, undefined, function () {
+
+				scope.manager.itemError( url );
+				scope.manager.itemEnd( url );
+
+			} );
+
+		}
+
+		function deserializeImage( image ) {
+
+			if ( typeof image === 'string' ) {
+
+				const url = image;
+
+				const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( url ) ? url : scope.resourcePath + url;
+
+				return loadImage( path );
+
+			} else {
+
+				if ( image.data ) {
+
+					return {
+						data: getTypedArray( image.type, image.data ),
+						width: image.width,
+						height: image.height
+					};
+
+				} else {
+
+					return null;
+
+				}
+
+			}
+
+		}
+
+		if ( json !== undefined && json.length > 0 ) {
+
+			const manager = new LoadingManager( onLoad );
+
+			loader = new ImageLoader( manager );
+			loader.setCrossOrigin( this.crossOrigin );
+
+			for ( let i = 0, il = json.length; i < il; i ++ ) {
+
+				const image = json[ i ];
+				const url = image.url;
+
+				if ( Array.isArray( url ) ) {
+
+					// load array of images e.g CubeTexture
+
+					const imageArray = [];
+
+					for ( let j = 0, jl = url.length; j < jl; j ++ ) {
+
+						const currentUrl = url[ j ];
+
+						const deserializedImage = deserializeImage( currentUrl );
+
+						if ( deserializedImage !== null ) {
+
+							if ( deserializedImage instanceof HTMLImageElement ) {
+
+								imageArray.push( deserializedImage );
+
+							} else {
+
+								// special case: handle array of data textures for cube textures
+
+								imageArray.push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );
+
+							}
+
+						}
+
+					}
+
+					images[ image.uuid ] = new Source( imageArray );
+
+				} else {
+
+					// load single image
+
+					const deserializedImage = deserializeImage( image.url );
+					images[ image.uuid ] = new Source( deserializedImage );
+
+
+				}
+
+			}
+
+		}
+
+		return images;
+
+	}
+
+	async parseImagesAsync( json ) {
+
+		const scope = this;
+		const images = {};
+
+		let loader;
+
+		async function deserializeImage( image ) {
+
+			if ( typeof image === 'string' ) {
+
+				const url = image;
+
+				const path = /^(\/\/)|([a-z]+:(\/\/)?)/i.test( url ) ? url : scope.resourcePath + url;
+
+				return await loader.loadAsync( path );
+
+			} else {
+
+				if ( image.data ) {
+
+					return {
+						data: getTypedArray( image.type, image.data ),
+						width: image.width,
+						height: image.height
+					};
+
+				} else {
+
+					return null;
+
+				}
+
+			}
+
+		}
+
+		if ( json !== undefined && json.length > 0 ) {
+
+			loader = new ImageLoader( this.manager );
+			loader.setCrossOrigin( this.crossOrigin );
+
+			for ( let i = 0, il = json.length; i < il; i ++ ) {
+
+				const image = json[ i ];
+				const url = image.url;
+
+				if ( Array.isArray( url ) ) {
+
+					// load array of images e.g CubeTexture
+
+					const imageArray = [];
+
+					for ( let j = 0, jl = url.length; j < jl; j ++ ) {
+
+						const currentUrl = url[ j ];
+
+						const deserializedImage = await deserializeImage( currentUrl );
+
+						if ( deserializedImage !== null ) {
+
+							if ( deserializedImage instanceof HTMLImageElement ) {
+
+								imageArray.push( deserializedImage );
+
+							} else {
+
+								// special case: handle array of data textures for cube textures
+
+								imageArray.push( new DataTexture( deserializedImage.data, deserializedImage.width, deserializedImage.height ) );
+
+							}
+
+						}
+
+					}
+
+					images[ image.uuid ] = new Source( imageArray );
+
+				} else {
+
+					// load single image
+
+					const deserializedImage = await deserializeImage( image.url );
+					images[ image.uuid ] = new Source( deserializedImage );
+
+				}
+
+			}
+
+		}
+
+		return images;
+
+	}
+
+	parseTextures( json, images ) {
+
+		function parseConstant( value, type ) {
+
+			if ( typeof value === 'number' ) return value;
+
+			console.warn( 'THREE.ObjectLoader.parseTexture: Constant should be in numeric form.', value );
+
+			return type[ value ];
+
+		}
+
+		const textures = {};
+
+		if ( json !== undefined ) {
+
+			for ( let i = 0, l = json.length; i < l; i ++ ) {
+
+				const data = json[ i ];
+
+				if ( data.image === undefined ) {
+
+					console.warn( 'THREE.ObjectLoader: No "image" specified for', data.uuid );
+
+				}
+
+				if ( images[ data.image ] === undefined ) {
+
+					console.warn( 'THREE.ObjectLoader: Undefined image', data.image );
+
+				}
+
+				const source = images[ data.image ];
+				const image = source.data;
+
+				let texture;
+
+				if ( Array.isArray( image ) ) {
+
+					texture = new CubeTexture();
+
+					if ( image.length === 6 ) texture.needsUpdate = true;
+
+				} else {
+
+					if ( image && image.data ) {
+
+						texture = new DataTexture();
+
+					} else {
+
+						texture = new Texture();
+
+					}
+
+					if ( image ) texture.needsUpdate = true; // textures can have undefined image data
+
+				}
+
+				texture.source = source;
+
+				texture.uuid = data.uuid;
+
+				if ( data.name !== undefined ) texture.name = data.name;
+
+				if ( data.mapping !== undefined ) texture.mapping = parseConstant( data.mapping, TEXTURE_MAPPING );
+				if ( data.channel !== undefined ) texture.channel = data.channel;
+
+				if ( data.offset !== undefined ) texture.offset.fromArray( data.offset );
+				if ( data.repeat !== undefined ) texture.repeat.fromArray( data.repeat );
+				if ( data.center !== undefined ) texture.center.fromArray( data.center );
+				if ( data.rotation !== undefined ) texture.rotation = data.rotation;
+
+				if ( data.wrap !== undefined ) {
+
+					texture.wrapS = parseConstant( data.wrap[ 0 ], TEXTURE_WRAPPING );
+					texture.wrapT = parseConstant( data.wrap[ 1 ], TEXTURE_WRAPPING );
+
+				}
+
+				if ( data.format !== undefined ) texture.format = data.format;
+				if ( data.internalFormat !== undefined ) texture.internalFormat = data.internalFormat;
+				if ( data.type !== undefined ) texture.type = data.type;
+				if ( data.colorSpace !== undefined ) texture.colorSpace = data.colorSpace;
+
+				if ( data.minFilter !== undefined ) texture.minFilter = parseConstant( data.minFilter, TEXTURE_FILTER );
+				if ( data.magFilter !== undefined ) texture.magFilter = parseConstant( data.magFilter, TEXTURE_FILTER );
+				if ( data.anisotropy !== undefined ) texture.anisotropy = data.anisotropy;
+
+				if ( data.flipY !== undefined ) texture.flipY = data.flipY;
+
+				if ( data.generateMipmaps !== undefined ) texture.generateMipmaps = data.generateMipmaps;
+				if ( data.premultiplyAlpha !== undefined ) texture.premultiplyAlpha = data.premultiplyAlpha;
+				if ( data.unpackAlignment !== undefined ) texture.unpackAlignment = data.unpackAlignment;
+				if ( data.compareFunction !== undefined ) texture.compareFunction = data.compareFunction;
+
+				if ( data.userData !== undefined ) texture.userData = data.userData;
+
+				textures[ data.uuid ] = texture;
+
+			}
+
+		}
+
+		return textures;
+
+	}
+
+	parseObject( data, geometries, materials, textures, animations ) {
+
+		let object;
+
+		function getGeometry( name ) {
+
+			if ( geometries[ name ] === undefined ) {
+
+				console.warn( 'THREE.ObjectLoader: Undefined geometry', name );
+
+			}
+
+			return geometries[ name ];
+
+		}
+
+		function getMaterial( name ) {
+
+			if ( name === undefined ) return undefined;
+
+			if ( Array.isArray( name ) ) {
+
+				const array = [];
+
+				for ( let i = 0, l = name.length; i < l; i ++ ) {
+
+					const uuid = name[ i ];
+
+					if ( materials[ uuid ] === undefined ) {
+
+						console.warn( 'THREE.ObjectLoader: Undefined material', uuid );
+
+					}
+
+					array.push( materials[ uuid ] );
+
+				}
+
+				return array;
+
+			}
+
+			if ( materials[ name ] === undefined ) {
+
+				console.warn( 'THREE.ObjectLoader: Undefined material', name );
+
+			}
+
+			return materials[ name ];
+
+		}
+
+		function getTexture( uuid ) {
+
+			if ( textures[ uuid ] === undefined ) {
+
+				console.warn( 'THREE.ObjectLoader: Undefined texture', uuid );
+
+			}
+
+			return textures[ uuid ];
+
+		}
+
+		let geometry, material;
+
+		switch ( data.type ) {
+
+			case 'Scene':
+
+				object = new Scene();
+
+				if ( data.background !== undefined ) {
+
+					if ( Number.isInteger( data.background ) ) {
+
+						object.background = new Color( data.background );
+
+					} else {
+
+						object.background = getTexture( data.background );
+
+					}
+
+				}
+
+				if ( data.environment !== undefined ) {
+
+					object.environment = getTexture( data.environment );
+
+				}
+
+				if ( data.fog !== undefined ) {
+
+					if ( data.fog.type === 'Fog' ) {
+
+						object.fog = new Fog( data.fog.color, data.fog.near, data.fog.far );
+
+					} else if ( data.fog.type === 'FogExp2' ) {
+
+						object.fog = new FogExp2( data.fog.color, data.fog.density );
+
+					}
+
+					if ( data.fog.name !== '' ) {
+
+						object.fog.name = data.fog.name;
+
+					}
+
+				}
+
+				if ( data.backgroundBlurriness !== undefined ) object.backgroundBlurriness = data.backgroundBlurriness;
+				if ( data.backgroundIntensity !== undefined ) object.backgroundIntensity = data.backgroundIntensity;
+				if ( data.backgroundRotation !== undefined ) object.backgroundRotation.fromArray( data.backgroundRotation );
+
+				if ( data.environmentIntensity !== undefined ) object.environmentIntensity = data.environmentIntensity;
+				if ( data.environmentRotation !== undefined ) object.environmentRotation.fromArray( data.environmentRotation );
+
+				break;
+
+			case 'PerspectiveCamera':
+
+				object = new PerspectiveCamera( data.fov, data.aspect, data.near, data.far );
+
+				if ( data.focus !== undefined ) object.focus = data.focus;
+				if ( data.zoom !== undefined ) object.zoom = data.zoom;
+				if ( data.filmGauge !== undefined ) object.filmGauge = data.filmGauge;
+				if ( data.filmOffset !== undefined ) object.filmOffset = data.filmOffset;
+				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );
+
+				break;
+
+			case 'OrthographicCamera':
+
+				object = new OrthographicCamera( data.left, data.right, data.top, data.bottom, data.near, data.far );
+
+				if ( data.zoom !== undefined ) object.zoom = data.zoom;
+				if ( data.view !== undefined ) object.view = Object.assign( {}, data.view );
+
+				break;
+
+			case 'AmbientLight':
+
+				object = new AmbientLight( data.color, data.intensity );
+
+				break;
+
+			case 'DirectionalLight':
+
+				object = new DirectionalLight( data.color, data.intensity );
+				object.target = data.target || '';
+
+				break;
+
+			case 'PointLight':
+
+				object = new PointLight( data.color, data.intensity, data.distance, data.decay );
+
+				break;
+
+			case 'RectAreaLight':
+
+				object = new RectAreaLight( data.color, data.intensity, data.width, data.height );
+
+				break;
+
+			case 'SpotLight':
+
+				object = new SpotLight( data.color, data.intensity, data.distance, data.angle, data.penumbra, data.decay );
+				object.target = data.target || '';
+
+				break;
+
+			case 'HemisphereLight':
+
+				object = new HemisphereLight( data.color, data.groundColor, data.intensity );
+
+				break;
+
+			case 'LightProbe':
+
+				object = new LightProbe().fromJSON( data );
+
+				break;
+
+			case 'SkinnedMesh':
+
+				geometry = getGeometry( data.geometry );
+			 	material = getMaterial( data.material );
+
+				object = new SkinnedMesh( geometry, material );
+
+				if ( data.bindMode !== undefined ) object.bindMode = data.bindMode;
+				if ( data.bindMatrix !== undefined ) object.bindMatrix.fromArray( data.bindMatrix );
+				if ( data.skeleton !== undefined ) object.skeleton = data.skeleton;
+
+				break;
+
+			case 'Mesh':
+
+				geometry = getGeometry( data.geometry );
+				material = getMaterial( data.material );
+
+				object = new Mesh( geometry, material );
+
+				break;
+
+			case 'InstancedMesh':
+
+				geometry = getGeometry( data.geometry );
+				material = getMaterial( data.material );
+				const count = data.count;
+				const instanceMatrix = data.instanceMatrix;
+				const instanceColor = data.instanceColor;
+
+				object = new InstancedMesh( geometry, material, count );
+				object.instanceMatrix = new InstancedBufferAttribute( new Float32Array( instanceMatrix.array ), 16 );
+				if ( instanceColor !== undefined ) object.instanceColor = new InstancedBufferAttribute( new Float32Array( instanceColor.array ), instanceColor.itemSize );
+
+				break;
+
+			case 'BatchedMesh':
+
+				geometry = getGeometry( data.geometry );
+				material = getMaterial( data.material );
+
+				object = new BatchedMesh( data.maxInstanceCount, data.maxVertexCount, data.maxIndexCount, material );
+				object.geometry = geometry;
+				object.perObjectFrustumCulled = data.perObjectFrustumCulled;
+				object.sortObjects = data.sortObjects;
+
+				object._drawRanges = data.drawRanges;
+				object._reservedRanges = data.reservedRanges;
+
+				object._visibility = data.visibility;
+				object._active = data.active;
+				object._bounds = data.bounds.map( bound => {
+
+					const box = new Box3();
+					box.min.fromArray( bound.boxMin );
+					box.max.fromArray( bound.boxMax );
+
+					const sphere = new Sphere();
+					sphere.radius = bound.sphereRadius;
+					sphere.center.fromArray( bound.sphereCenter );
+
+					return {
+						boxInitialized: bound.boxInitialized,
+						box: box,
+
+						sphereInitialized: bound.sphereInitialized,
+						sphere: sphere
+					};
+
+				} );
+
+				object._maxInstanceCount = data.maxInstanceCount;
+				object._maxVertexCount = data.maxVertexCount;
+				object._maxIndexCount = data.maxIndexCount;
+
+				object._geometryInitialized = data.geometryInitialized;
+				object._geometryCount = data.geometryCount;
+
+				object._matricesTexture = getTexture( data.matricesTexture.uuid );
+				if ( data.colorsTexture !== undefined ) object._colorsTexture = getTexture( data.colorsTexture.uuid );
+
+				break;
+
+			case 'LOD':
+
+				object = new LOD();
+
+				break;
+
+			case 'Line':
+
+				object = new Line( getGeometry( data.geometry ), getMaterial( data.material ) );
+
+				break;
+
+			case 'LineLoop':
+
+				object = new LineLoop( getGeometry( data.geometry ), getMaterial( data.material ) );
+
+				break;
+
+			case 'LineSegments':
+
+				object = new LineSegments( getGeometry( data.geometry ), getMaterial( data.material ) );
+
+				break;
+
+			case 'PointCloud':
+			case 'Points':
+
+				object = new Points( getGeometry( data.geometry ), getMaterial( data.material ) );
+
+				break;
+
+			case 'Sprite':
+
+				object = new Sprite( getMaterial( data.material ) );
+
+				break;
+
+			case 'Group':
+
+				object = new Group();
+
+				break;
+
+			case 'Bone':
+
+				object = new Bone();
+
+				break;
+
+			default:
+
+				object = new Object3D();
+
+		}
+
+		object.uuid = data.uuid;
+
+		if ( data.name !== undefined ) object.name = data.name;
+
+		if ( data.matrix !== undefined ) {
+
+			object.matrix.fromArray( data.matrix );
+
+			if ( data.matrixAutoUpdate !== undefined ) object.matrixAutoUpdate = data.matrixAutoUpdate;
+			if ( object.matrixAutoUpdate ) object.matrix.decompose( object.position, object.quaternion, object.scale );
+
+		} else {
+
+			if ( data.position !== undefined ) object.position.fromArray( data.position );
+			if ( data.rotation !== undefined ) object.rotation.fromArray( data.rotation );
+			if ( data.quaternion !== undefined ) object.quaternion.fromArray( data.quaternion );
+			if ( data.scale !== undefined ) object.scale.fromArray( data.scale );
+
+		}
+
+		if ( data.up !== undefined ) object.up.fromArray( data.up );
+
+		if ( data.castShadow !== undefined ) object.castShadow = data.castShadow;
+		if ( data.receiveShadow !== undefined ) object.receiveShadow = data.receiveShadow;
+
+		if ( data.shadow ) {
+
+			if ( data.shadow.intensity !== undefined ) object.shadow.intensity = data.shadow.intensity;
+			if ( data.shadow.bias !== undefined ) object.shadow.bias = data.shadow.bias;
+			if ( data.shadow.normalBias !== undefined ) object.shadow.normalBias = data.shadow.normalBias;
+			if ( data.shadow.radius !== undefined ) object.shadow.radius = data.shadow.radius;
+			if ( data.shadow.mapSize !== undefined ) object.shadow.mapSize.fromArray( data.shadow.mapSize );
+			if ( data.shadow.camera !== undefined ) object.shadow.camera = this.parseObject( data.shadow.camera );
+
+		}
+
+		if ( data.visible !== undefined ) object.visible = data.visible;
+		if ( data.frustumCulled !== undefined ) object.frustumCulled = data.frustumCulled;
+		if ( data.renderOrder !== undefined ) object.renderOrder = data.renderOrder;
+		if ( data.userData !== undefined ) object.userData = data.userData;
+		if ( data.layers !== undefined ) object.layers.mask = data.layers;
+
+		if ( data.children !== undefined ) {
+
+			const children = data.children;
+
+			for ( let i = 0; i < children.length; i ++ ) {
+
+				object.add( this.parseObject( children[ i ], geometries, materials, textures, animations ) );
+
+			}
+
+		}
+
+		if ( data.animations !== undefined ) {
+
+			const objectAnimations = data.animations;
+
+			for ( let i = 0; i < objectAnimations.length; i ++ ) {
+
+				const uuid = objectAnimations[ i ];
+
+				object.animations.push( animations[ uuid ] );
+
+			}
+
+		}
+
+		if ( data.type === 'LOD' ) {
+
+			if ( data.autoUpdate !== undefined ) object.autoUpdate = data.autoUpdate;
+
+			const levels = data.levels;
+
+			for ( let l = 0; l < levels.length; l ++ ) {
+
+				const level = levels[ l ];
+				const child = object.getObjectByProperty( 'uuid', level.object );
+
+				if ( child !== undefined ) {
+
+					object.addLevel( child, level.distance, level.hysteresis );
+
+				}
+
+			}
+
+		}
+
+		return object;
+
+	}
+
+	bindSkeletons( object, skeletons ) {
+
+		if ( Object.keys( skeletons ).length === 0 ) return;
+
+		object.traverse( function ( child ) {
+
+			if ( child.isSkinnedMesh === true && child.skeleton !== undefined ) {
+
+				const skeleton = skeletons[ child.skeleton ];
+
+				if ( skeleton === undefined ) {
+
+					console.warn( 'THREE.ObjectLoader: No skeleton found with UUID:', child.skeleton );
+
+				} else {
+
+					child.bind( skeleton, child.bindMatrix );
+
+				}
+
+			}
+
+		} );
+
+	}
+
+	bindLightTargets( object ) {
+
+		object.traverse( function ( child ) {
+
+			if ( child.isDirectionalLight || child.isSpotLight ) {
+
+				const uuid = child.target;
+
+				const target = object.getObjectByProperty( 'uuid', uuid );
+
+				if ( target !== undefined ) {
+
+					child.target = target;
+
+				} else {
+
+					child.target = new Object3D();
+
+				}
+
+			}
+
+		} );
+
+	}
+
+}
+
+const TEXTURE_MAPPING = {
+	UVMapping: UVMapping,
+	CubeReflectionMapping: CubeReflectionMapping,
+	CubeRefractionMapping: CubeRefractionMapping,
+	EquirectangularReflectionMapping: EquirectangularReflectionMapping,
+	EquirectangularRefractionMapping: EquirectangularRefractionMapping,
+	CubeUVReflectionMapping: CubeUVReflectionMapping
+};
+
+const TEXTURE_WRAPPING = {
+	RepeatWrapping: RepeatWrapping,
+	ClampToEdgeWrapping: ClampToEdgeWrapping,
+	MirroredRepeatWrapping: MirroredRepeatWrapping
+};
+
+const TEXTURE_FILTER = {
+	NearestFilter: NearestFilter,
+	NearestMipmapNearestFilter: NearestMipmapNearestFilter,
+	NearestMipmapLinearFilter: NearestMipmapLinearFilter,
+	LinearFilter: LinearFilter,
+	LinearMipmapNearestFilter: LinearMipmapNearestFilter,
+	LinearMipmapLinearFilter: LinearMipmapLinearFilter
+};
+
+class ImageBitmapLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+		this.isImageBitmapLoader = true;
+
+		if ( typeof createImageBitmap === 'undefined' ) {
+
+			console.warn( 'THREE.ImageBitmapLoader: createImageBitmap() not supported.' );
+
+		}
+
+		if ( typeof fetch === 'undefined' ) {
+
+			console.warn( 'THREE.ImageBitmapLoader: fetch() not supported.' );
+
+		}
+
+		this.options = { premultiplyAlpha: 'none' };
+
+	}
+
+	setOptions( options ) {
+
+		this.options = options;
+
+		return this;
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		if ( url === undefined ) url = '';
+
+		if ( this.path !== undefined ) url = this.path + url;
+
+		url = this.manager.resolveURL( url );
+
+		const scope = this;
+
+		const cached = Cache.get( url );
+
+		if ( cached !== undefined ) {
+
+			scope.manager.itemStart( url );
+
+			// If cached is a promise, wait for it to resolve
+			if ( cached.then ) {
+
+				cached.then( imageBitmap => {
+
+					if ( onLoad ) onLoad( imageBitmap );
+
+					scope.manager.itemEnd( url );
+
+				} ).catch( e => {
+
+					if ( onError ) onError( e );
+
+				} );
+				return;
+
+			}
+
+			// If cached is not a promise (i.e., it's already an imageBitmap)
+			setTimeout( function () {
+
+				if ( onLoad ) onLoad( cached );
+
+				scope.manager.itemEnd( url );
+
+			}, 0 );
+
+			return cached;
+
+		}
+
+		const fetchOptions = {};
+		fetchOptions.credentials = ( this.crossOrigin === 'anonymous' ) ? 'same-origin' : 'include';
+		fetchOptions.headers = this.requestHeader;
+
+		const promise = fetch( url, fetchOptions ).then( function ( res ) {
+
+			return res.blob();
+
+		} ).then( function ( blob ) {
+
+			return createImageBitmap( blob, Object.assign( scope.options, { colorSpaceConversion: 'none' } ) );
+
+		} ).then( function ( imageBitmap ) {
+
+			Cache.add( url, imageBitmap );
+
+			if ( onLoad ) onLoad( imageBitmap );
+
+			scope.manager.itemEnd( url );
+
+			return imageBitmap;
+
+		} ).catch( function ( e ) {
+
+			if ( onError ) onError( e );
+
+			Cache.remove( url );
+
+			scope.manager.itemError( url );
+			scope.manager.itemEnd( url );
+
+		} );
+
+		Cache.add( url, promise );
+		scope.manager.itemStart( url );
+
+	}
+
+}
+
+let _context;
+
+class AudioContext {
+
+	static getContext() {
+
+		if ( _context === undefined ) {
+
+			_context = new ( window.AudioContext || window.webkitAudioContext )();
+
+		}
+
+		return _context;
+
+	}
+
+	static setContext( value ) {
+
+		_context = value;
+
+	}
+
+}
+
+class AudioLoader extends Loader {
+
+	constructor( manager ) {
+
+		super( manager );
+
+	}
+
+	load( url, onLoad, onProgress, onError ) {
+
+		const scope = this;
+
+		const loader = new FileLoader( this.manager );
+		loader.setResponseType( 'arraybuffer' );
+		loader.setPath( this.path );
+		loader.setRequestHeader( this.requestHeader );
+		loader.setWithCredentials( this.withCredentials );
+		loader.load( url, function ( buffer ) {
+
+			try {
+
+				// Create a copy of the buffer. The `decodeAudioData` method
+				// detaches the buffer when complete, preventing reuse.
+				const bufferCopy = buffer.slice( 0 );
+
+				const context = AudioContext.getContext();
+				context.decodeAudioData( bufferCopy, function ( audioBuffer ) {
+
+					onLoad( audioBuffer );
+
+				} ).catch( handleError );
+
+			} catch ( e ) {
+
+				handleError( e );
+
+			}
+
+		}, onProgress, onError );
+
+		function handleError( e ) {
+
+			if ( onError ) {
+
+				onError( e );
+
+			} else {
+
+				console.error( e );
+
+			}
+
+			scope.manager.itemError( url );
+
+		}
+
+	}
+
+}
+
+const _eyeRight = /*@__PURE__*/ new Matrix4();
+const _eyeLeft = /*@__PURE__*/ new Matrix4();
+const _projectionMatrix = /*@__PURE__*/ new Matrix4();
+
+class StereoCamera {
+
+	constructor() {
+
+		this.type = 'StereoCamera';
+
+		this.aspect = 1;
+
+		this.eyeSep = 0.064;
+
+		this.cameraL = new PerspectiveCamera();
+		this.cameraL.layers.enable( 1 );
+		this.cameraL.matrixAutoUpdate = false;
+
+		this.cameraR = new PerspectiveCamera();
+		this.cameraR.layers.enable( 2 );
+		this.cameraR.matrixAutoUpdate = false;
+
+		this._cache = {
+			focus: null,
+			fov: null,
+			aspect: null,
+			near: null,
+			far: null,
+			zoom: null,
+			eyeSep: null
+		};
+
+	}
+
+	update( camera ) {
+
+		const cache = this._cache;
+
+		const needsUpdate = cache.focus !== camera.focus || cache.fov !== camera.fov ||
+			cache.aspect !== camera.aspect * this.aspect || cache.near !== camera.near ||
+			cache.far !== camera.far || cache.zoom !== camera.zoom || cache.eyeSep !== this.eyeSep;
+
+		if ( needsUpdate ) {
+
+			cache.focus = camera.focus;
+			cache.fov = camera.fov;
+			cache.aspect = camera.aspect * this.aspect;
+			cache.near = camera.near;
+			cache.far = camera.far;
+			cache.zoom = camera.zoom;
+			cache.eyeSep = this.eyeSep;
+
+			// Off-axis stereoscopic effect based on
+			// http://paulbourke.net/stereographics/stereorender/
+
+			_projectionMatrix.copy( camera.projectionMatrix );
+			const eyeSepHalf = cache.eyeSep / 2;
+			const eyeSepOnProjection = eyeSepHalf * cache.near / cache.focus;
+			const ymax = ( cache.near * Math.tan( DEG2RAD * cache.fov * 0.5 ) ) / cache.zoom;
+			let xmin, xmax;
+
+			// translate xOffset
+
+			_eyeLeft.elements[ 12 ] = - eyeSepHalf;
+			_eyeRight.elements[ 12 ] = eyeSepHalf;
+
+			// for left eye
+
+			xmin = - ymax * cache.aspect + eyeSepOnProjection;
+			xmax = ymax * cache.aspect + eyeSepOnProjection;
+
+			_projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
+			_projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
+
+			this.cameraL.projectionMatrix.copy( _projectionMatrix );
+
+			// for right eye
+
+			xmin = - ymax * cache.aspect - eyeSepOnProjection;
+			xmax = ymax * cache.aspect - eyeSepOnProjection;
+
+			_projectionMatrix.elements[ 0 ] = 2 * cache.near / ( xmax - xmin );
+			_projectionMatrix.elements[ 8 ] = ( xmax + xmin ) / ( xmax - xmin );
+
+			this.cameraR.projectionMatrix.copy( _projectionMatrix );
+
+		}
+
+		this.cameraL.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeLeft );
+		this.cameraR.matrixWorld.copy( camera.matrixWorld ).multiply( _eyeRight );
+
+	}
+
+}
+
+class Clock {
+
+	constructor( autoStart = true ) {
+
+		this.autoStart = autoStart;
+
+		this.startTime = 0;
+		this.oldTime = 0;
+		this.elapsedTime = 0;
+
+		this.running = false;
+
+	}
+
+	start() {
+
+		this.startTime = now();
+
+		this.oldTime = this.startTime;
+		this.elapsedTime = 0;
+		this.running = true;
+
+	}
+
+	stop() {
+
+		this.getElapsedTime();
+		this.running = false;
+		this.autoStart = false;
+
+	}
+
+	getElapsedTime() {
+
+		this.getDelta();
+		return this.elapsedTime;
+
+	}
+
+	getDelta() {
+
+		let diff = 0;
+
+		if ( this.autoStart && ! this.running ) {
+
+			this.start();
+			return 0;
+
+		}
+
+		if ( this.running ) {
+
+			const newTime = now();
+
+			diff = ( newTime - this.oldTime ) / 1000;
+			this.oldTime = newTime;
+
+			this.elapsedTime += diff;
+
+		}
+
+		return diff;
+
+	}
+
+}
+
+function now() {
+
+	return ( typeof performance === 'undefined' ? Date : performance ).now(); // see #10732
+
+}
+
+const _position$1 = /*@__PURE__*/ new Vector3();
+const _quaternion$1 = /*@__PURE__*/ new Quaternion();
+const _scale$1 = /*@__PURE__*/ new Vector3();
+const _orientation$1 = /*@__PURE__*/ new Vector3();
+
+class AudioListener extends Object3D {
+
+	constructor() {
+
+		super();
+
+		this.type = 'AudioListener';
+
+		this.context = AudioContext.getContext();
+
+		this.gain = this.context.createGain();
+		this.gain.connect( this.context.destination );
+
+		this.filter = null;
+
+		this.timeDelta = 0;
+
+		// private
+
+		this._clock = new Clock();
+
+	}
+
+	getInput() {
+
+		return this.gain;
+
+	}
+
+	removeFilter() {
+
+		if ( this.filter !== null ) {
+
+			this.gain.disconnect( this.filter );
+			this.filter.disconnect( this.context.destination );
+			this.gain.connect( this.context.destination );
+			this.filter = null;
+
+		}
+
+		return this;
+
+	}
+
+	getFilter() {
+
+		return this.filter;
+
+	}
+
+	setFilter( value ) {
+
+		if ( this.filter !== null ) {
+
+			this.gain.disconnect( this.filter );
+			this.filter.disconnect( this.context.destination );
+
+		} else {
+
+			this.gain.disconnect( this.context.destination );
+
+		}
+
+		this.filter = value;
+		this.gain.connect( this.filter );
+		this.filter.connect( this.context.destination );
+
+		return this;
+
+	}
+
+	getMasterVolume() {
+
+		return this.gain.gain.value;
+
+	}
+
+	setMasterVolume( value ) {
+
+		this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );
+
+		return this;
+
+	}
+
+	updateMatrixWorld( force ) {
+
+		super.updateMatrixWorld( force );
+
+		const listener = this.context.listener;
+		const up = this.up;
+
+		this.timeDelta = this._clock.getDelta();
+
+		this.matrixWorld.decompose( _position$1, _quaternion$1, _scale$1 );
+
+		_orientation$1.set( 0, 0, - 1 ).applyQuaternion( _quaternion$1 );
+
+		if ( listener.positionX ) {
+
+			// code path for Chrome (see #14393)
+
+			const endTime = this.context.currentTime + this.timeDelta;
+
+			listener.positionX.linearRampToValueAtTime( _position$1.x, endTime );
+			listener.positionY.linearRampToValueAtTime( _position$1.y, endTime );
+			listener.positionZ.linearRampToValueAtTime( _position$1.z, endTime );
+			listener.forwardX.linearRampToValueAtTime( _orientation$1.x, endTime );
+			listener.forwardY.linearRampToValueAtTime( _orientation$1.y, endTime );
+			listener.forwardZ.linearRampToValueAtTime( _orientation$1.z, endTime );
+			listener.upX.linearRampToValueAtTime( up.x, endTime );
+			listener.upY.linearRampToValueAtTime( up.y, endTime );
+			listener.upZ.linearRampToValueAtTime( up.z, endTime );
+
+		} else {
+
+			listener.setPosition( _position$1.x, _position$1.y, _position$1.z );
+			listener.setOrientation( _orientation$1.x, _orientation$1.y, _orientation$1.z, up.x, up.y, up.z );
+
+		}
+
+	}
+
+}
+
+class Audio extends Object3D {
+
+	constructor( listener ) {
+
+		super();
+
+		this.type = 'Audio';
+
+		this.listener = listener;
+		this.context = listener.context;
+
+		this.gain = this.context.createGain();
+		this.gain.connect( listener.getInput() );
+
+		this.autoplay = false;
+
+		this.buffer = null;
+		this.detune = 0;
+		this.loop = false;
+		this.loopStart = 0;
+		this.loopEnd = 0;
+		this.offset = 0;
+		this.duration = undefined;
+		this.playbackRate = 1;
+		this.isPlaying = false;
+		this.hasPlaybackControl = true;
+		this.source = null;
+		this.sourceType = 'empty';
+
+		this._startedAt = 0;
+		this._progress = 0;
+		this._connected = false;
+
+		this.filters = [];
+
+	}
+
+	getOutput() {
+
+		return this.gain;
+
+	}
+
+	setNodeSource( audioNode ) {
+
+		this.hasPlaybackControl = false;
+		this.sourceType = 'audioNode';
+		this.source = audioNode;
+		this.connect();
+
+		return this;
+
+	}
+
+	setMediaElementSource( mediaElement ) {
+
+		this.hasPlaybackControl = false;
+		this.sourceType = 'mediaNode';
+		this.source = this.context.createMediaElementSource( mediaElement );
+		this.connect();
+
+		return this;
+
+	}
+
+	setMediaStreamSource( mediaStream ) {
+
+		this.hasPlaybackControl = false;
+		this.sourceType = 'mediaStreamNode';
+		this.source = this.context.createMediaStreamSource( mediaStream );
+		this.connect();
+
+		return this;
+
+	}
+
+	setBuffer( audioBuffer ) {
+
+		this.buffer = audioBuffer;
+		this.sourceType = 'buffer';
+
+		if ( this.autoplay ) this.play();
+
+		return this;
+
+	}
+
+	play( delay = 0 ) {
+
+		if ( this.isPlaying === true ) {
+
+			console.warn( 'THREE.Audio: Audio is already playing.' );
+			return;
+
+		}
+
+		if ( this.hasPlaybackControl === false ) {
+
+			console.warn( 'THREE.Audio: this Audio has no playback control.' );
+			return;
+
+		}
+
+		this._startedAt = this.context.currentTime + delay;
+
+		const source = this.context.createBufferSource();
+		source.buffer = this.buffer;
+		source.loop = this.loop;
+		source.loopStart = this.loopStart;
+		source.loopEnd = this.loopEnd;
+		source.onended = this.onEnded.bind( this );
+		source.start( this._startedAt, this._progress + this.offset, this.duration );
+
+		this.isPlaying = true;
+
+		this.source = source;
+
+		this.setDetune( this.detune );
+		this.setPlaybackRate( this.playbackRate );
+
+		return this.connect();
+
+	}
+
+	pause() {
+
+		if ( this.hasPlaybackControl === false ) {
+
+			console.warn( 'THREE.Audio: this Audio has no playback control.' );
+			return;
+
+		}
+
+		if ( this.isPlaying === true ) {
+
+			// update current progress
+
+			this._progress += Math.max( this.context.currentTime - this._startedAt, 0 ) * this.playbackRate;
+
+			if ( this.loop === true ) {
+
+				// ensure _progress does not exceed duration with looped audios
+
+				this._progress = this._progress % ( this.duration || this.buffer.duration );
+
+			}
+
+			this.source.stop();
+			this.source.onended = null;
+
+			this.isPlaying = false;
+
+		}
+
+		return this;
+
+	}
+
+	stop() {
+
+		if ( this.hasPlaybackControl === false ) {
+
+			console.warn( 'THREE.Audio: this Audio has no playback control.' );
+			return;
+
+		}
+
+		this._progress = 0;
+
+		if ( this.source !== null ) {
+
+			this.source.stop();
+			this.source.onended = null;
+
+		}
+
+		this.isPlaying = false;
+
+		return this;
+
+	}
+
+	connect() {
+
+		if ( this.filters.length > 0 ) {
+
+			this.source.connect( this.filters[ 0 ] );
+
+			for ( let i = 1, l = this.filters.length; i < l; i ++ ) {
+
+				this.filters[ i - 1 ].connect( this.filters[ i ] );
+
+			}
+
+			this.filters[ this.filters.length - 1 ].connect( this.getOutput() );
+
+		} else {
+
+			this.source.connect( this.getOutput() );
+
+		}
+
+		this._connected = true;
+
+		return this;
+
+	}
+
+	disconnect() {
+
+		if ( this._connected === false ) {
+
+			return;
+
+		}
+
+		if ( this.filters.length > 0 ) {
+
+			this.source.disconnect( this.filters[ 0 ] );
+
+			for ( let i = 1, l = this.filters.length; i < l; i ++ ) {
+
+				this.filters[ i - 1 ].disconnect( this.filters[ i ] );
+
+			}
+
+			this.filters[ this.filters.length - 1 ].disconnect( this.getOutput() );
+
+		} else {
+
+			this.source.disconnect( this.getOutput() );
+
+		}
+
+		this._connected = false;
+
+		return this;
+
+	}
+
+	getFilters() {
+
+		return this.filters;
+
+	}
+
+	setFilters( value ) {
+
+		if ( ! value ) value = [];
+
+		if ( this._connected === true ) {
+
+			this.disconnect();
+			this.filters = value.slice();
+			this.connect();
+
+		} else {
+
+			this.filters = value.slice();
+
+		}
+
+		return this;
+
+	}
+
+	setDetune( value ) {
+
+		this.detune = value;
+
+		if ( this.isPlaying === true && this.source.detune !== undefined ) {
+
+			this.source.detune.setTargetAtTime( this.detune, this.context.currentTime, 0.01 );
+
+		}
+
+		return this;
+
+	}
+
+	getDetune() {
+
+		return this.detune;
+
+	}
+
+	getFilter() {
+
+		return this.getFilters()[ 0 ];
+
+	}
+
+	setFilter( filter ) {
+
+		return this.setFilters( filter ? [ filter ] : [] );
+
+	}
+
+	setPlaybackRate( value ) {
+
+		if ( this.hasPlaybackControl === false ) {
+
+			console.warn( 'THREE.Audio: this Audio has no playback control.' );
+			return;
+
+		}
+
+		this.playbackRate = value;
+
+		if ( this.isPlaying === true ) {
+
+			this.source.playbackRate.setTargetAtTime( this.playbackRate, this.context.currentTime, 0.01 );
+
+		}
+
+		return this;
+
+	}
+
+	getPlaybackRate() {
+
+		return this.playbackRate;
+
+	}
+
+	onEnded() {
+
+		this.isPlaying = false;
+
+	}
+
+	getLoop() {
+
+		if ( this.hasPlaybackControl === false ) {
+
+			console.warn( 'THREE.Audio: this Audio has no playback control.' );
+			return false;
+
+		}
+
+		return this.loop;
+
+	}
+
+	setLoop( value ) {
+
+		if ( this.hasPlaybackControl === false ) {
+
+			console.warn( 'THREE.Audio: this Audio has no playback control.' );
+			return;
+
+		}
+
+		this.loop = value;
+
+		if ( this.isPlaying === true ) {
+
+			this.source.loop = this.loop;
+
+		}
+
+		return this;
+
+	}
+
+	setLoopStart( value ) {
+
+		this.loopStart = value;
+
+		return this;
+
+	}
+
+	setLoopEnd( value ) {
+
+		this.loopEnd = value;
+
+		return this;
+
+	}
+
+	getVolume() {
+
+		return this.gain.gain.value;
+
+	}
+
+	setVolume( value ) {
+
+		this.gain.gain.setTargetAtTime( value, this.context.currentTime, 0.01 );
+
+		return this;
+
+	}
+
+}
+
+const _position = /*@__PURE__*/ new Vector3();
+const _quaternion = /*@__PURE__*/ new Quaternion();
+const _scale = /*@__PURE__*/ new Vector3();
+const _orientation = /*@__PURE__*/ new Vector3();
+
+class PositionalAudio extends Audio {
+
+	constructor( listener ) {
+
+		super( listener );
+
+		this.panner = this.context.createPanner();
+		this.panner.panningModel = 'HRTF';
+		this.panner.connect( this.gain );
+
+	}
+
+	connect() {
+
+		super.connect();
+
+		this.panner.connect( this.gain );
+
+	}
+
+	disconnect() {
+
+		super.disconnect();
+
+		this.panner.disconnect( this.gain );
+
+	}
+
+	getOutput() {
+
+		return this.panner;
+
+	}
+
+	getRefDistance() {
+
+		return this.panner.refDistance;
+
+	}
+
+	setRefDistance( value ) {
+
+		this.panner.refDistance = value;
+
+		return this;
+
+	}
+
+	getRolloffFactor() {
+
+		return this.panner.rolloffFactor;
+
+	}
+
+	setRolloffFactor( value ) {
+
+		this.panner.rolloffFactor = value;
+
+		return this;
+
+	}
+
+	getDistanceModel() {
+
+		return this.panner.distanceModel;
+
+	}
+
+	setDistanceModel( value ) {
+
+		this.panner.distanceModel = value;
+
+		return this;
+
+	}
+
+	getMaxDistance() {
+
+		return this.panner.maxDistance;
+
+	}
+
+	setMaxDistance( value ) {
+
+		this.panner.maxDistance = value;
+
+		return this;
+
+	}
+
+	setDirectionalCone( coneInnerAngle, coneOuterAngle, coneOuterGain ) {
+
+		this.panner.coneInnerAngle = coneInnerAngle;
+		this.panner.coneOuterAngle = coneOuterAngle;
+		this.panner.coneOuterGain = coneOuterGain;
+
+		return this;
+
+	}
+
+	updateMatrixWorld( force ) {
+
+		super.updateMatrixWorld( force );
+
+		if ( this.hasPlaybackControl === true && this.isPlaying === false ) return;
+
+		this.matrixWorld.decompose( _position, _quaternion, _scale );
+
+		_orientation.set( 0, 0, 1 ).applyQuaternion( _quaternion );
+
+		const panner = this.panner;
+
+		if ( panner.positionX ) {
+
+			// code path for Chrome and Firefox (see #14393)
+
+			const endTime = this.context.currentTime + this.listener.timeDelta;
+
+			panner.positionX.linearRampToValueAtTime( _position.x, endTime );
+			panner.positionY.linearRampToValueAtTime( _position.y, endTime );
+			panner.positionZ.linearRampToValueAtTime( _position.z, endTime );
+			panner.orientationX.linearRampToValueAtTime( _orientation.x, endTime );
+			panner.orientationY.linearRampToValueAtTime( _orientation.y, endTime );
+			panner.orientationZ.linearRampToValueAtTime( _orientation.z, endTime );
+
+		} else {
+
+			panner.setPosition( _position.x, _position.y, _position.z );
+			panner.setOrientation( _orientation.x, _orientation.y, _orientation.z );
+
+		}
+
+	}
+
+}
+
+class AudioAnalyser {
+
+	constructor( audio, fftSize = 2048 ) {
+
+		this.analyser = audio.context.createAnalyser();
+		this.analyser.fftSize = fftSize;
+
+		this.data = new Uint8Array( this.analyser.frequencyBinCount );
+
+		audio.getOutput().connect( this.analyser );
+
+	}
+
+
+	getFrequencyData() {
+
+		this.analyser.getByteFrequencyData( this.data );
+
+		return this.data;
+
+	}
+
+	getAverageFrequency() {
+
+		let value = 0;
+		const data = this.getFrequencyData();
+
+		for ( let i = 0; i < data.length; i ++ ) {
+
+			value += data[ i ];
+
+		}
+
+		return value / data.length;
+
+	}
+
+}
+
+class PropertyMixer {
+
+	constructor( binding, typeName, valueSize ) {
+
+		this.binding = binding;
+		this.valueSize = valueSize;
+
+		let mixFunction,
+			mixFunctionAdditive,
+			setIdentity;
+
+		// buffer layout: [ incoming | accu0 | accu1 | orig | addAccu | (optional work) ]
+		//
+		// interpolators can use .buffer as their .result
+		// the data then goes to 'incoming'
+		//
+		// 'accu0' and 'accu1' are used frame-interleaved for
+		// the cumulative result and are compared to detect
+		// changes
+		//
+		// 'orig' stores the original state of the property
+		//
+		// 'add' is used for additive cumulative results
+		//
+		// 'work' is optional and is only present for quaternion types. It is used
+		// to store intermediate quaternion multiplication results
+
+		switch ( typeName ) {
+
+			case 'quaternion':
+				mixFunction = this._slerp;
+				mixFunctionAdditive = this._slerpAdditive;
+				setIdentity = this._setAdditiveIdentityQuaternion;
+
+				this.buffer = new Float64Array( valueSize * 6 );
+				this._workIndex = 5;
+				break;
+
+			case 'string':
+			case 'bool':
+				mixFunction = this._select;
+
+				// Use the regular mix function and for additive on these types,
+				// additive is not relevant for non-numeric types
+				mixFunctionAdditive = this._select;
+
+				setIdentity = this._setAdditiveIdentityOther;
+
+				this.buffer = new Array( valueSize * 5 );
+				break;
+
+			default:
+				mixFunction = this._lerp;
+				mixFunctionAdditive = this._lerpAdditive;
+				setIdentity = this._setAdditiveIdentityNumeric;
+
+				this.buffer = new Float64Array( valueSize * 5 );
+
+		}
+
+		this._mixBufferRegion = mixFunction;
+		this._mixBufferRegionAdditive = mixFunctionAdditive;
+		this._setIdentity = setIdentity;
+		this._origIndex = 3;
+		this._addIndex = 4;
+
+		this.cumulativeWeight = 0;
+		this.cumulativeWeightAdditive = 0;
+
+		this.useCount = 0;
+		this.referenceCount = 0;
+
+	}
+
+	// accumulate data in the 'incoming' region into 'accu<i>'
+	accumulate( accuIndex, weight ) {
+
+		// note: happily accumulating nothing when weight = 0, the caller knows
+		// the weight and shouldn't have made the call in the first place
+
+		const buffer = this.buffer,
+			stride = this.valueSize,
+			offset = accuIndex * stride + stride;
+
+		let currentWeight = this.cumulativeWeight;
+
+		if ( currentWeight === 0 ) {
+
+			// accuN := incoming * weight
+
+			for ( let i = 0; i !== stride; ++ i ) {
+
+				buffer[ offset + i ] = buffer[ i ];
+
+			}
+
+			currentWeight = weight;
+
+		} else {
+
+			// accuN := accuN + incoming * weight
+
+			currentWeight += weight;
+			const mix = weight / currentWeight;
+			this._mixBufferRegion( buffer, offset, 0, mix, stride );
+
+		}
+
+		this.cumulativeWeight = currentWeight;
+
+	}
+
+	// accumulate data in the 'incoming' region into 'add'
+	accumulateAdditive( weight ) {
+
+		const buffer = this.buffer,
+			stride = this.valueSize,
+			offset = stride * this._addIndex;
+
+		if ( this.cumulativeWeightAdditive === 0 ) {
+
+			// add = identity
+
+			this._setIdentity();
+
+		}
+
+		// add := add + incoming * weight
+
+		this._mixBufferRegionAdditive( buffer, offset, 0, weight, stride );
+		this.cumulativeWeightAdditive += weight;
+
+	}
+
+	// apply the state of 'accu<i>' to the binding when accus differ
+	apply( accuIndex ) {
+
+		const stride = this.valueSize,
+			buffer = this.buffer,
+			offset = accuIndex * stride + stride,
+
+			weight = this.cumulativeWeight,
+			weightAdditive = this.cumulativeWeightAdditive,
+
+			binding = this.binding;
+
+		this.cumulativeWeight = 0;
+		this.cumulativeWeightAdditive = 0;
+
+		if ( weight < 1 ) {
+
+			// accuN := accuN + original * ( 1 - cumulativeWeight )
+
+			const originalValueOffset = stride * this._origIndex;
+
+			this._mixBufferRegion(
+				buffer, offset, originalValueOffset, 1 - weight, stride );
+
+		}
+
+		if ( weightAdditive > 0 ) {
+
+			// accuN := accuN + additive accuN
+
+			this._mixBufferRegionAdditive( buffer, offset, this._addIndex * stride, 1, stride );
+
+		}
+
+		for ( let i = stride, e = stride + stride; i !== e; ++ i ) {
+
+			if ( buffer[ i ] !== buffer[ i + stride ] ) {
+
+				// value has changed -> update scene graph
+
+				binding.setValue( buffer, offset );
+				break;
+
+			}
+
+		}
+
+	}
+
+	// remember the state of the bound property and copy it to both accus
+	saveOriginalState() {
+
+		const binding = this.binding;
+
+		const buffer = this.buffer,
+			stride = this.valueSize,
+
+			originalValueOffset = stride * this._origIndex;
+
+		binding.getValue( buffer, originalValueOffset );
+
+		// accu[0..1] := orig -- initially detect changes against the original
+		for ( let i = stride, e = originalValueOffset; i !== e; ++ i ) {
+
+			buffer[ i ] = buffer[ originalValueOffset + ( i % stride ) ];
+
+		}
+
+		// Add to identity for additive
+		this._setIdentity();
+
+		this.cumulativeWeight = 0;
+		this.cumulativeWeightAdditive = 0;
+
+	}
+
+	// apply the state previously taken via 'saveOriginalState' to the binding
+	restoreOriginalState() {
+
+		const originalValueOffset = this.valueSize * 3;
+		this.binding.setValue( this.buffer, originalValueOffset );
+
+	}
+
+	_setAdditiveIdentityNumeric() {
+
+		const startIndex = this._addIndex * this.valueSize;
+		const endIndex = startIndex + this.valueSize;
+
+		for ( let i = startIndex; i < endIndex; i ++ ) {
+
+			this.buffer[ i ] = 0;
+
+		}
+
+	}
+
+	_setAdditiveIdentityQuaternion() {
+
+		this._setAdditiveIdentityNumeric();
+		this.buffer[ this._addIndex * this.valueSize + 3 ] = 1;
+
+	}
+
+	_setAdditiveIdentityOther() {
+
+		const startIndex = this._origIndex * this.valueSize;
+		const targetIndex = this._addIndex * this.valueSize;
+
+		for ( let i = 0; i < this.valueSize; i ++ ) {
+
+			this.buffer[ targetIndex + i ] = this.buffer[ startIndex + i ];
+
+		}
+
+	}
+
+
+	// mix functions
+
+	_select( buffer, dstOffset, srcOffset, t, stride ) {
+
+		if ( t >= 0.5 ) {
+
+			for ( let i = 0; i !== stride; ++ i ) {
+
+				buffer[ dstOffset + i ] = buffer[ srcOffset + i ];
+
+			}
+
+		}
+
+	}
+
+	_slerp( buffer, dstOffset, srcOffset, t ) {
+
+		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, srcOffset, t );
+
+	}
+
+	_slerpAdditive( buffer, dstOffset, srcOffset, t, stride ) {
+
+		const workOffset = this._workIndex * stride;
+
+		// Store result in intermediate buffer offset
+		Quaternion.multiplyQuaternionsFlat( buffer, workOffset, buffer, dstOffset, buffer, srcOffset );
+
+		// Slerp to the intermediate result
+		Quaternion.slerpFlat( buffer, dstOffset, buffer, dstOffset, buffer, workOffset, t );
+
+	}
+
+	_lerp( buffer, dstOffset, srcOffset, t, stride ) {
+
+		const s = 1 - t;
+
+		for ( let i = 0; i !== stride; ++ i ) {
+
+			const j = dstOffset + i;
+
+			buffer[ j ] = buffer[ j ] * s + buffer[ srcOffset + i ] * t;
+
+		}
+
+	}
+
+	_lerpAdditive( buffer, dstOffset, srcOffset, t, stride ) {
+
+		for ( let i = 0; i !== stride; ++ i ) {
+
+			const j = dstOffset + i;
+
+			buffer[ j ] = buffer[ j ] + buffer[ srcOffset + i ] * t;
+
+		}
+
+	}
+
+}
+
+// Characters [].:/ are reserved for track binding syntax.
+const _RESERVED_CHARS_RE = '\\[\\]\\.:\\/';
+const _reservedRe = new RegExp( '[' + _RESERVED_CHARS_RE + ']', 'g' );
+
+// Attempts to allow node names from any language. ES5's `\w` regexp matches
+// only latin characters, and the unicode \p{L} is not yet supported. So
+// instead, we exclude reserved characters and match everything else.
+const _wordChar = '[^' + _RESERVED_CHARS_RE + ']';
+const _wordCharOrDot = '[^' + _RESERVED_CHARS_RE.replace( '\\.', '' ) + ']';
+
+// Parent directories, delimited by '/' or ':'. Currently unused, but must
+// be matched to parse the rest of the track name.
+const _directoryRe = /*@__PURE__*/ /((?:WC+[\/:])*)/.source.replace( 'WC', _wordChar );
+
+// Target node. May contain word characters (a-zA-Z0-9_) and '.' or '-'.
+const _nodeRe = /*@__PURE__*/ /(WCOD+)?/.source.replace( 'WCOD', _wordCharOrDot );
+
+// Object on target node, and accessor. May not contain reserved
+// characters. Accessor may contain any character except closing bracket.
+const _objectRe = /*@__PURE__*/ /(?:\.(WC+)(?:\[(.+)\])?)?/.source.replace( 'WC', _wordChar );
+
+// Property and accessor. May not contain reserved characters. Accessor may
+// contain any non-bracket characters.
+const _propertyRe = /*@__PURE__*/ /\.(WC+)(?:\[(.+)\])?/.source.replace( 'WC', _wordChar );
+
+const _trackRe = new RegExp( ''
+	+ '^'
+	+ _directoryRe
+	+ _nodeRe
+	+ _objectRe
+	+ _propertyRe
+	+ '$'
+);
+
+const _supportedObjectNames = [ 'material', 'materials', 'bones', 'map' ];
+
+class Composite {
+
+	constructor( targetGroup, path, optionalParsedPath ) {
+
+		const parsedPath = optionalParsedPath || PropertyBinding.parseTrackName( path );
+
+		this._targetGroup = targetGroup;
+		this._bindings = targetGroup.subscribe_( path, parsedPath );
+
+	}
+
+	getValue( array, offset ) {
+
+		this.bind(); // bind all binding
+
+		const firstValidIndex = this._targetGroup.nCachedObjects_,
+			binding = this._bindings[ firstValidIndex ];
+
+		// and only call .getValue on the first
+		if ( binding !== undefined ) binding.getValue( array, offset );
+
+	}
+
+	setValue( array, offset ) {
+
+		const bindings = this._bindings;
+
+		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {
+
+			bindings[ i ].setValue( array, offset );
+
+		}
+
+	}
+
+	bind() {
+
+		const bindings = this._bindings;
+
+		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {
+
+			bindings[ i ].bind();
+
+		}
+
+	}
+
+	unbind() {
+
+		const bindings = this._bindings;
+
+		for ( let i = this._targetGroup.nCachedObjects_, n = bindings.length; i !== n; ++ i ) {
+
+			bindings[ i ].unbind();
+
+		}
+
+	}
+
+}
+
+// Note: This class uses a State pattern on a per-method basis:
+// 'bind' sets 'this.getValue' / 'setValue' and shadows the
+// prototype version of these methods with one that represents
+// the bound state. When the property is not found, the methods
+// become no-ops.
+class PropertyBinding {
+
+	constructor( rootNode, path, parsedPath ) {
+
+		this.path = path;
+		this.parsedPath = parsedPath || PropertyBinding.parseTrackName( path );
+
+		this.node = PropertyBinding.findNode( rootNode, this.parsedPath.nodeName );
+
+		this.rootNode = rootNode;
+
+		// initial state of these methods that calls 'bind'
+		this.getValue = this._getValue_unbound;
+		this.setValue = this._setValue_unbound;
+
+	}
+
+
+	static create( root, path, parsedPath ) {
+
+		if ( ! ( root && root.isAnimationObjectGroup ) ) {
+
+			return new PropertyBinding( root, path, parsedPath );
+
+		} else {
+
+			return new PropertyBinding.Composite( root, path, parsedPath );
+
+		}
+
+	}
+
+	/**
+	 * Replaces spaces with underscores and removes unsupported characters from
+	 * node names, to ensure compatibility with parseTrackName().
+	 *
+	 * @param {string} name Node name to be sanitized.
+	 * @return {string}
+	 */
+	static sanitizeNodeName( name ) {
+
+		return name.replace( /\s/g, '_' ).replace( _reservedRe, '' );
+
+	}
+
+	static parseTrackName( trackName ) {
+
+		const matches = _trackRe.exec( trackName );
+
+		if ( matches === null ) {
+
+			throw new Error( 'PropertyBinding: Cannot parse trackName: ' + trackName );
+
+		}
+
+		const results = {
+			// directoryName: matches[ 1 ], // (tschw) currently unused
+			nodeName: matches[ 2 ],
+			objectName: matches[ 3 ],
+			objectIndex: matches[ 4 ],
+			propertyName: matches[ 5 ], // required
+			propertyIndex: matches[ 6 ]
+		};
+
+		const lastDot = results.nodeName && results.nodeName.lastIndexOf( '.' );
+
+		if ( lastDot !== undefined && lastDot !== - 1 ) {
+
+			const objectName = results.nodeName.substring( lastDot + 1 );
+
+			// Object names must be checked against an allowlist. Otherwise, there
+			// is no way to parse 'foo.bar.baz': 'baz' must be a property, but
+			// 'bar' could be the objectName, or part of a nodeName (which can
+			// include '.' characters).
+			if ( _supportedObjectNames.indexOf( objectName ) !== - 1 ) {
+
+				results.nodeName = results.nodeName.substring( 0, lastDot );
+				results.objectName = objectName;
+
+			}
+
+		}
+
+		if ( results.propertyName === null || results.propertyName.length === 0 ) {
+
+			throw new Error( 'PropertyBinding: can not parse propertyName from trackName: ' + trackName );
+
+		}
+
+		return results;
+
+	}
+
+	static findNode( root, nodeName ) {
+
+		if ( nodeName === undefined || nodeName === '' || nodeName === '.' || nodeName === - 1 || nodeName === root.name || nodeName === root.uuid ) {
+
+			return root;
+
+		}
+
+		// search into skeleton bones.
+		if ( root.skeleton ) {
+
+			const bone = root.skeleton.getBoneByName( nodeName );
+
+			if ( bone !== undefined ) {
+
+				return bone;
+
+			}
+
+		}
+
+		// search into node subtree.
+		if ( root.children ) {
+
+			const searchNodeSubtree = function ( children ) {
+
+				for ( let i = 0; i < children.length; i ++ ) {
+
+					const childNode = children[ i ];
+
+					if ( childNode.name === nodeName || childNode.uuid === nodeName ) {
+
+						return childNode;
+
+					}
+
+					const result = searchNodeSubtree( childNode.children );
+
+					if ( result ) return result;
+
+				}
+
+				return null;
+
+			};
+
+			const subTreeNode = searchNodeSubtree( root.children );
+
+			if ( subTreeNode ) {
+
+				return subTreeNode;
+
+			}
+
+		}
+
+		return null;
+
+	}
+
+	// these are used to "bind" a nonexistent property
+	_getValue_unavailable() {}
+	_setValue_unavailable() {}
+
+	// Getters
+
+	_getValue_direct( buffer, offset ) {
+
+		buffer[ offset ] = this.targetObject[ this.propertyName ];
+
+	}
+
+	_getValue_array( buffer, offset ) {
+
+		const source = this.resolvedProperty;
+
+		for ( let i = 0, n = source.length; i !== n; ++ i ) {
+
+			buffer[ offset ++ ] = source[ i ];
+
+		}
+
+	}
+
+	_getValue_arrayElement( buffer, offset ) {
+
+		buffer[ offset ] = this.resolvedProperty[ this.propertyIndex ];
+
+	}
+
+	_getValue_toArray( buffer, offset ) {
+
+		this.resolvedProperty.toArray( buffer, offset );
+
+	}
+
+	// Direct
+
+	_setValue_direct( buffer, offset ) {
+
+		this.targetObject[ this.propertyName ] = buffer[ offset ];
+
+	}
+
+	_setValue_direct_setNeedsUpdate( buffer, offset ) {
+
+		this.targetObject[ this.propertyName ] = buffer[ offset ];
+		this.targetObject.needsUpdate = true;
+
+	}
+
+	_setValue_direct_setMatrixWorldNeedsUpdate( buffer, offset ) {
+
+		this.targetObject[ this.propertyName ] = buffer[ offset ];
+		this.targetObject.matrixWorldNeedsUpdate = true;
+
+	}
+
+	// EntireArray
+
+	_setValue_array( buffer, offset ) {
+
+		const dest = this.resolvedProperty;
+
+		for ( let i = 0, n = dest.length; i !== n; ++ i ) {
+
+			dest[ i ] = buffer[ offset ++ ];
+
+		}
+
+	}
+
+	_setValue_array_setNeedsUpdate( buffer, offset ) {
+
+		const dest = this.resolvedProperty;
+
+		for ( let i = 0, n = dest.length; i !== n; ++ i ) {
+
+			dest[ i ] = buffer[ offset ++ ];
+
+		}
+
+		this.targetObject.needsUpdate = true;
+
+	}
+
+	_setValue_array_setMatrixWorldNeedsUpdate( buffer, offset ) {
+
+		const dest = this.resolvedProperty;
+
+		for ( let i = 0, n = dest.length; i !== n; ++ i ) {
+
+			dest[ i ] = buffer[ offset ++ ];
+
+		}
+
+		this.targetObject.matrixWorldNeedsUpdate = true;
+
+	}
+
+	// ArrayElement
+
+	_setValue_arrayElement( buffer, offset ) {
+
+		this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
+
+	}
+
+	_setValue_arrayElement_setNeedsUpdate( buffer, offset ) {
+
+		this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
+		this.targetObject.needsUpdate = true;
+
+	}
+
+	_setValue_arrayElement_setMatrixWorldNeedsUpdate( buffer, offset ) {
+
+		this.resolvedProperty[ this.propertyIndex ] = buffer[ offset ];
+		this.targetObject.matrixWorldNeedsUpdate = true;
+
+	}
+
+	// HasToFromArray
+
+	_setValue_fromArray( buffer, offset ) {
+
+		this.resolvedProperty.fromArray( buffer, offset );
+
+	}
+
+	_setValue_fromArray_setNeedsUpdate( buffer, offset ) {
+
+		this.resolvedProperty.fromArray( buffer, offset );
+		this.targetObject.needsUpdate = true;
+
+	}
+
+	_setValue_fromArray_setMatrixWorldNeedsUpdate( buffer, offset ) {
+
+		this.resolvedProperty.fromArray( buffer, offset );
+		this.targetObject.matrixWorldNeedsUpdate = true;
+
+	}
+
+	_getValue_unbound( targetArray, offset ) {
+
+		this.bind();
+		this.getValue( targetArray, offset );
+
+	}
+
+	_setValue_unbound( sourceArray, offset ) {
+
+		this.bind();
+		this.setValue( sourceArray, offset );
+
+	}
+
+	// create getter / setter pair for a property in the scene graph
+	bind() {
+
+		let targetObject = this.node;
+		const parsedPath = this.parsedPath;
+
+		const objectName = parsedPath.objectName;
+		const propertyName = parsedPath.propertyName;
+		let propertyIndex = parsedPath.propertyIndex;
+
+		if ( ! targetObject ) {
+
+			targetObject = PropertyBinding.findNode( this.rootNode, parsedPath.nodeName );
+
+			this.node = targetObject;
+
+		}
+
+		// set fail state so we can just 'return' on error
+		this.getValue = this._getValue_unavailable;
+		this.setValue = this._setValue_unavailable;
+
+		// ensure there is a value node
+		if ( ! targetObject ) {
+
+			console.warn( 'THREE.PropertyBinding: No target node found for track: ' + this.path + '.' );
+			return;
+
+		}
+
+		if ( objectName ) {
+
+			let objectIndex = parsedPath.objectIndex;
+
+			// special cases were we need to reach deeper into the hierarchy to get the face materials....
+			switch ( objectName ) {
+
+				case 'materials':
+
+					if ( ! targetObject.material ) {
+
+						console.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );
+						return;
+
+					}
+
+					if ( ! targetObject.material.materials ) {
+
+						console.error( 'THREE.PropertyBinding: Can not bind to material.materials as node.material does not have a materials array.', this );
+						return;
+
+					}
+
+					targetObject = targetObject.material.materials;
+
+					break;
+
+				case 'bones':
+
+					if ( ! targetObject.skeleton ) {
+
+						console.error( 'THREE.PropertyBinding: Can not bind to bones as node does not have a skeleton.', this );
+						return;
+
+					}
+
+					// potential future optimization: skip this if propertyIndex is already an integer
+					// and convert the integer string to a true integer.
+
+					targetObject = targetObject.skeleton.bones;
+
+					// support resolving morphTarget names into indices.
+					for ( let i = 0; i < targetObject.length; i ++ ) {
+
+						if ( targetObject[ i ].name === objectIndex ) {
+
+							objectIndex = i;
+							break;
+
+						}
+
+					}
+
+					break;
+
+				case 'map':
+
+					if ( 'map' in targetObject ) {
+
+						targetObject = targetObject.map;
+						break;
+
+					}
+
+					if ( ! targetObject.material ) {
+
+						console.error( 'THREE.PropertyBinding: Can not bind to material as node does not have a material.', this );
+						return;
+
+					}
+
+					if ( ! targetObject.material.map ) {
+
+						console.error( 'THREE.PropertyBinding: Can not bind to material.map as node.material does not have a map.', this );
+						return;
+
+					}
+
+					targetObject = targetObject.material.map;
+					break;
+
+				default:
+
+					if ( targetObject[ objectName ] === undefined ) {
+
+						console.error( 'THREE.PropertyBinding: Can not bind to objectName of node undefined.', this );
+						return;
+
+					}
+
+					targetObject = targetObject[ objectName ];
+
+			}
+
+
+			if ( objectIndex !== undefined ) {
+
+				if ( targetObject[ objectIndex ] === undefined ) {
+
+					console.error( 'THREE.PropertyBinding: Trying to bind to objectIndex of objectName, but is undefined.', this, targetObject );
+					return;
+
+				}
+
+				targetObject = targetObject[ objectIndex ];
+
+			}
+
+		}
+
+		// resolve property
+		const nodeProperty = targetObject[ propertyName ];
+
+		if ( nodeProperty === undefined ) {
+
+			const nodeName = parsedPath.nodeName;
+
+			console.error( 'THREE.PropertyBinding: Trying to update property for track: ' + nodeName +
+				'.' + propertyName + ' but it wasn\'t found.', targetObject );
+			return;
+
+		}
+
+		// determine versioning scheme
+		let versioning = this.Versioning.None;
+
+		this.targetObject = targetObject;
+
+		if ( targetObject.needsUpdate !== undefined ) { // material
+
+			versioning = this.Versioning.NeedsUpdate;
+
+		} else if ( targetObject.matrixWorldNeedsUpdate !== undefined ) { // node transform
+
+			versioning = this.Versioning.MatrixWorldNeedsUpdate;
+
+		}
+
+		// determine how the property gets bound
+		let bindingType = this.BindingType.Direct;
+
+		if ( propertyIndex !== undefined ) {
+
+			// access a sub element of the property array (only primitives are supported right now)
+
+			if ( propertyName === 'morphTargetInfluences' ) {
+
+				// potential optimization, skip this if propertyIndex is already an integer, and convert the integer string to a true integer.
+
+				// support resolving morphTarget names into indices.
+				if ( ! targetObject.geometry ) {
+
+					console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.', this );
+					return;
+
+				}
+
+				if ( ! targetObject.geometry.morphAttributes ) {
+
+					console.error( 'THREE.PropertyBinding: Can not bind to morphTargetInfluences because node does not have a geometry.morphAttributes.', this );
+					return;
+
+				}
+
+				if ( targetObject.morphTargetDictionary[ propertyIndex ] !== undefined ) {
+
+					propertyIndex = targetObject.morphTargetDictionary[ propertyIndex ];
+
+				}
+
+			}
+
+			bindingType = this.BindingType.ArrayElement;
+
+			this.resolvedProperty = nodeProperty;
+			this.propertyIndex = propertyIndex;
+
+		} else if ( nodeProperty.fromArray !== undefined && nodeProperty.toArray !== undefined ) {
+
+			// must use copy for Object3D.Euler/Quaternion
+
+			bindingType = this.BindingType.HasFromToArray;
+
+			this.resolvedProperty = nodeProperty;
+
+		} else if ( Array.isArray( nodeProperty ) ) {
+
+			bindingType = this.BindingType.EntireArray;
+
+			this.resolvedProperty = nodeProperty;
+
+		} else {
+
+			this.propertyName = propertyName;
+
+		}
+
+		// select getter / setter
+		this.getValue = this.GetterByBindingType[ bindingType ];
+		this.setValue = this.SetterByBindingTypeAndVersioning[ bindingType ][ versioning ];
+
+	}
+
+	unbind() {
+
+		this.node = null;
+
+		// back to the prototype version of getValue / setValue
+		// note: avoiding to mutate the shape of 'this' via 'delete'
+		this.getValue = this._getValue_unbound;
+		this.setValue = this._setValue_unbound;
+
+	}
+
+}
+
+PropertyBinding.Composite = Composite;
+
+PropertyBinding.prototype.BindingType = {
+	Direct: 0,
+	EntireArray: 1,
+	ArrayElement: 2,
+	HasFromToArray: 3
+};
+
+PropertyBinding.prototype.Versioning = {
+	None: 0,
+	NeedsUpdate: 1,
+	MatrixWorldNeedsUpdate: 2
+};
+
+PropertyBinding.prototype.GetterByBindingType = [
+
+	PropertyBinding.prototype._getValue_direct,
+	PropertyBinding.prototype._getValue_array,
+	PropertyBinding.prototype._getValue_arrayElement,
+	PropertyBinding.prototype._getValue_toArray,
+
+];
+
+PropertyBinding.prototype.SetterByBindingTypeAndVersioning = [
+
+	[
+		// Direct
+		PropertyBinding.prototype._setValue_direct,
+		PropertyBinding.prototype._setValue_direct_setNeedsUpdate,
+		PropertyBinding.prototype._setValue_direct_setMatrixWorldNeedsUpdate,
+
+	], [
+
+		// EntireArray
+
+		PropertyBinding.prototype._setValue_array,
+		PropertyBinding.prototype._setValue_array_setNeedsUpdate,
+		PropertyBinding.prototype._setValue_array_setMatrixWorldNeedsUpdate,
+
+	], [
+
+		// ArrayElement
+		PropertyBinding.prototype._setValue_arrayElement,
+		PropertyBinding.prototype._setValue_arrayElement_setNeedsUpdate,
+		PropertyBinding.prototype._setValue_arrayElement_setMatrixWorldNeedsUpdate,
+
+	], [
+
+		// HasToFromArray
+		PropertyBinding.prototype._setValue_fromArray,
+		PropertyBinding.prototype._setValue_fromArray_setNeedsUpdate,
+		PropertyBinding.prototype._setValue_fromArray_setMatrixWorldNeedsUpdate,
+
+	]
+
+];
+
+/**
+ *
+ * A group of objects that receives a shared animation state.
+ *
+ * Usage:
+ *
+ *  - Add objects you would otherwise pass as 'root' to the
+ *    constructor or the .clipAction method of AnimationMixer.
+ *
+ *  - Instead pass this object as 'root'.
+ *
+ *  - You can also add and remove objects later when the mixer
+ *    is running.
+ *
+ * Note:
+ *
+ *    Objects of this class appear as one object to the mixer,
+ *    so cache control of the individual objects must be done
+ *    on the group.
+ *
+ * Limitation:
+ *
+ *  - The animated properties must be compatible among the
+ *    all objects in the group.
+ *
+ *  - A single property can either be controlled through a
+ *    target group or directly, but not both.
+ */
+
+class AnimationObjectGroup {
+
+	constructor() {
+
+		this.isAnimationObjectGroup = true;
+
+		this.uuid = generateUUID();
+
+		// cached objects followed by the active ones
+		this._objects = Array.prototype.slice.call( arguments );
+
+		this.nCachedObjects_ = 0; // threshold
+		// note: read by PropertyBinding.Composite
+
+		const indices = {};
+		this._indicesByUUID = indices; // for bookkeeping
+
+		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
+
+			indices[ arguments[ i ].uuid ] = i;
+
+		}
+
+		this._paths = []; // inside: string
+		this._parsedPaths = []; // inside: { we don't care, here }
+		this._bindings = []; // inside: Array< PropertyBinding >
+		this._bindingsIndicesByPath = {}; // inside: indices in these arrays
+
+		const scope = this;
+
+		this.stats = {
+
+			objects: {
+				get total() {
+
+					return scope._objects.length;
+
+				},
+				get inUse() {
+
+					return this.total - scope.nCachedObjects_;
+
+				}
+			},
+			get bindingsPerObject() {
+
+				return scope._bindings.length;
+
+			}
+
+		};
+
+	}
+
+	add() {
+
+		const objects = this._objects,
+			indicesByUUID = this._indicesByUUID,
+			paths = this._paths,
+			parsedPaths = this._parsedPaths,
+			bindings = this._bindings,
+			nBindings = bindings.length;
+
+		let knownObject = undefined,
+			nObjects = objects.length,
+			nCachedObjects = this.nCachedObjects_;
+
+		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
+
+			const object = arguments[ i ],
+				uuid = object.uuid;
+			let index = indicesByUUID[ uuid ];
+
+			if ( index === undefined ) {
+
+				// unknown object -> add it to the ACTIVE region
+
+				index = nObjects ++;
+				indicesByUUID[ uuid ] = index;
+				objects.push( object );
+
+				// accounting is done, now do the same for all bindings
+
+				for ( let j = 0, m = nBindings; j !== m; ++ j ) {
+
+					bindings[ j ].push( new PropertyBinding( object, paths[ j ], parsedPaths[ j ] ) );
+
+				}
+
+			} else if ( index < nCachedObjects ) {
+
+				knownObject = objects[ index ];
+
+				// move existing object to the ACTIVE region
+
+				const firstActiveIndex = -- nCachedObjects,
+					lastCachedObject = objects[ firstActiveIndex ];
+
+				indicesByUUID[ lastCachedObject.uuid ] = index;
+				objects[ index ] = lastCachedObject;
+
+				indicesByUUID[ uuid ] = firstActiveIndex;
+				objects[ firstActiveIndex ] = object;
+
+				// accounting is done, now do the same for all bindings
+
+				for ( let j = 0, m = nBindings; j !== m; ++ j ) {
+
+					const bindingsForPath = bindings[ j ],
+						lastCached = bindingsForPath[ firstActiveIndex ];
+
+					let binding = bindingsForPath[ index ];
+
+					bindingsForPath[ index ] = lastCached;
+
+					if ( binding === undefined ) {
+
+						// since we do not bother to create new bindings
+						// for objects that are cached, the binding may
+						// or may not exist
+
+						binding = new PropertyBinding( object, paths[ j ], parsedPaths[ j ] );
+
+					}
+
+					bindingsForPath[ firstActiveIndex ] = binding;
+
+				}
+
+			} else if ( objects[ index ] !== knownObject ) {
+
+				console.error( 'THREE.AnimationObjectGroup: Different objects with the same UUID ' +
+					'detected. Clean the caches or recreate your infrastructure when reloading scenes.' );
+
+			} // else the object is already where we want it to be
+
+		} // for arguments
+
+		this.nCachedObjects_ = nCachedObjects;
+
+	}
+
+	remove() {
+
+		const objects = this._objects,
+			indicesByUUID = this._indicesByUUID,
+			bindings = this._bindings,
+			nBindings = bindings.length;
+
+		let nCachedObjects = this.nCachedObjects_;
+
+		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
+
+			const object = arguments[ i ],
+				uuid = object.uuid,
+				index = indicesByUUID[ uuid ];
+
+			if ( index !== undefined && index >= nCachedObjects ) {
+
+				// move existing object into the CACHED region
+
+				const lastCachedIndex = nCachedObjects ++,
+					firstActiveObject = objects[ lastCachedIndex ];
+
+				indicesByUUID[ firstActiveObject.uuid ] = index;
+				objects[ index ] = firstActiveObject;
+
+				indicesByUUID[ uuid ] = lastCachedIndex;
+				objects[ lastCachedIndex ] = object;
+
+				// accounting is done, now do the same for all bindings
+
+				for ( let j = 0, m = nBindings; j !== m; ++ j ) {
+
+					const bindingsForPath = bindings[ j ],
+						firstActive = bindingsForPath[ lastCachedIndex ],
+						binding = bindingsForPath[ index ];
+
+					bindingsForPath[ index ] = firstActive;
+					bindingsForPath[ lastCachedIndex ] = binding;
+
+				}
+
+			}
+
+		} // for arguments
+
+		this.nCachedObjects_ = nCachedObjects;
+
+	}
+
+	// remove & forget
+	uncache() {
+
+		const objects = this._objects,
+			indicesByUUID = this._indicesByUUID,
+			bindings = this._bindings,
+			nBindings = bindings.length;
+
+		let nCachedObjects = this.nCachedObjects_,
+			nObjects = objects.length;
+
+		for ( let i = 0, n = arguments.length; i !== n; ++ i ) {
+
+			const object = arguments[ i ],
+				uuid = object.uuid,
+				index = indicesByUUID[ uuid ];
+
+			if ( index !== undefined ) {
+
+				delete indicesByUUID[ uuid ];
+
+				if ( index < nCachedObjects ) {
+
+					// object is cached, shrink the CACHED region
+
+					const firstActiveIndex = -- nCachedObjects,
+						lastCachedObject = objects[ firstActiveIndex ],
+						lastIndex = -- nObjects,
+						lastObject = objects[ lastIndex ];
+
+					// last cached object takes this object's place
+					indicesByUUID[ lastCachedObject.uuid ] = index;
+					objects[ index ] = lastCachedObject;
+
+					// last object goes to the activated slot and pop
+					indicesByUUID[ lastObject.uuid ] = firstActiveIndex;
+					objects[ firstActiveIndex ] = lastObject;
+					objects.pop();
+
+					// accounting is done, now do the same for all bindings
+
+					for ( let j = 0, m = nBindings; j !== m; ++ j ) {
+
+						const bindingsForPath = bindings[ j ],
+							lastCached = bindingsForPath[ firstActiveIndex ],
+							last = bindingsForPath[ lastIndex ];
+
+						bindingsForPath[ index ] = lastCached;
+						bindingsForPath[ firstActiveIndex ] = last;
+						bindingsForPath.pop();
+
+					}
+
+				} else {
+
+					// object is active, just swap with the last and pop
+
+					const lastIndex = -- nObjects,
+						lastObject = objects[ lastIndex ];
+
+					if ( lastIndex > 0 ) {
+
+						indicesByUUID[ lastObject.uuid ] = index;
+
+					}
+
+					objects[ index ] = lastObject;
+					objects.pop();
+
+					// accounting is done, now do the same for all bindings
+
+					for ( let j = 0, m = nBindings; j !== m; ++ j ) {
+
+						const bindingsForPath = bindings[ j ];
+
+						bindingsForPath[ index ] = bindingsForPath[ lastIndex ];
+						bindingsForPath.pop();
+
+					}
+
+				} // cached or active
+
+			} // if object is known
+
+		} // for arguments
+
+		this.nCachedObjects_ = nCachedObjects;
+
+	}
+
+	// Internal interface used by befriended PropertyBinding.Composite:
+
+	subscribe_( path, parsedPath ) {
+
+		// returns an array of bindings for the given path that is changed
+		// according to the contained objects in the group
+
+		const indicesByPath = this._bindingsIndicesByPath;
+		let index = indicesByPath[ path ];
+		const bindings = this._bindings;
+
+		if ( index !== undefined ) return bindings[ index ];
+
+		const paths = this._paths,
+			parsedPaths = this._parsedPaths,
+			objects = this._objects,
+			nObjects = objects.length,
+			nCachedObjects = this.nCachedObjects_,
+			bindingsForPath = new Array( nObjects );
+
+		index = bindings.length;
+
+		indicesByPath[ path ] = index;
+
+		paths.push( path );
+		parsedPaths.push( parsedPath );
+		bindings.push( bindingsForPath );
+
+		for ( let i = nCachedObjects, n = objects.length; i !== n; ++ i ) {
+
+			const object = objects[ i ];
+			bindingsForPath[ i ] = new PropertyBinding( object, path, parsedPath );
+
+		}
+
+		return bindingsForPath;
+
+	}
+
+	unsubscribe_( path ) {
+
+		// tells the group to forget about a property path and no longer
+		// update the array previously obtained with 'subscribe_'
+
+		const indicesByPath = this._bindingsIndicesByPath,
+			index = indicesByPath[ path ];
+
+		if ( index !== undefined ) {
+
+			const paths = this._paths,
+				parsedPaths = this._parsedPaths,
+				bindings = this._bindings,
+				lastBindingsIndex = bindings.length - 1,
+				lastBindings = bindings[ lastBindingsIndex ],
+				lastBindingsPath = path[ lastBindingsIndex ];
+
+			indicesByPath[ lastBindingsPath ] = index;
+
+			bindings[ index ] = lastBindings;
+			bindings.pop();
+
+			parsedPaths[ index ] = parsedPaths[ lastBindingsIndex ];
+			parsedPaths.pop();
+
+			paths[ index ] = paths[ lastBindingsIndex ];
+			paths.pop();
+
+		}
+
+	}
+
+}
+
+class AnimationAction {
+
+	constructor( mixer, clip, localRoot = null, blendMode = clip.blendMode ) {
+
+		this._mixer = mixer;
+		this._clip = clip;
+		this._localRoot = localRoot;
+		this.blendMode = blendMode;
+
+		const tracks = clip.tracks,
+			nTracks = tracks.length,
+			interpolants = new Array( nTracks );
+
+		const interpolantSettings = {
+			endingStart: ZeroCurvatureEnding,
+			endingEnd: ZeroCurvatureEnding
+		};
+
+		for ( let i = 0; i !== nTracks; ++ i ) {
+
+			const interpolant = tracks[ i ].createInterpolant( null );
+			interpolants[ i ] = interpolant;
+			interpolant.settings = interpolantSettings;
+
+		}
+
+		this._interpolantSettings = interpolantSettings;
+
+		this._interpolants = interpolants; // bound by the mixer
+
+		// inside: PropertyMixer (managed by the mixer)
+		this._propertyBindings = new Array( nTracks );
+
+		this._cacheIndex = null; // for the memory manager
+		this._byClipCacheIndex = null; // for the memory manager
+
+		this._timeScaleInterpolant = null;
+		this._weightInterpolant = null;
+
+		this.loop = LoopRepeat;
+		this._loopCount = - 1;
+
+		// global mixer time when the action is to be started
+		// it's set back to 'null' upon start of the action
+		this._startTime = null;
+
+		// scaled local time of the action
+		// gets clamped or wrapped to 0..clip.duration according to loop
+		this.time = 0;
+
+		this.timeScale = 1;
+		this._effectiveTimeScale = 1;
+
+		this.weight = 1;
+		this._effectiveWeight = 1;
+
+		this.repetitions = Infinity; // no. of repetitions when looping
+
+		this.paused = false; // true -> zero effective time scale
+		this.enabled = true; // false -> zero effective weight
+
+		this.clampWhenFinished = false;// keep feeding the last frame?
+
+		this.zeroSlopeAtStart = true;// for smooth interpolation w/o separate
+		this.zeroSlopeAtEnd = true;// clips for start, loop and end
+
+	}
+
+	// State & Scheduling
+
+	play() {
+
+		this._mixer._activateAction( this );
+
+		return this;
+
+	}
+
+	stop() {
+
+		this._mixer._deactivateAction( this );
+
+		return this.reset();
+
+	}
+
+	reset() {
+
+		this.paused = false;
+		this.enabled = true;
+
+		this.time = 0; // restart clip
+		this._loopCount = - 1;// forget previous loops
+		this._startTime = null;// forget scheduling
+
+		return this.stopFading().stopWarping();
+
+	}
+
+	isRunning() {
+
+		return this.enabled && ! this.paused && this.timeScale !== 0 &&
+			this._startTime === null && this._mixer._isActiveAction( this );
+
+	}
+
+	// return true when play has been called
+	isScheduled() {
+
+		return this._mixer._isActiveAction( this );
+
+	}
+
+	startAt( time ) {
+
+		this._startTime = time;
+
+		return this;
+
+	}
+
+	setLoop( mode, repetitions ) {
+
+		this.loop = mode;
+		this.repetitions = repetitions;
+
+		return this;
+
+	}
+
+	// Weight
+
+	// set the weight stopping any scheduled fading
+	// although .enabled = false yields an effective weight of zero, this
+	// method does *not* change .enabled, because it would be confusing
+	setEffectiveWeight( weight ) {
+
+		this.weight = weight;
+
+		// note: same logic as when updated at runtime
+		this._effectiveWeight = this.enabled ? weight : 0;
+
+		return this.stopFading();
+
+	}
+
+	// return the weight considering fading and .enabled
+	getEffectiveWeight() {
+
+		return this._effectiveWeight;
+
+	}
+
+	fadeIn( duration ) {
+
+		return this._scheduleFading( duration, 0, 1 );
+
+	}
+
+	fadeOut( duration ) {
+
+		return this._scheduleFading( duration, 1, 0 );
+
+	}
+
+	crossFadeFrom( fadeOutAction, duration, warp ) {
+
+		fadeOutAction.fadeOut( duration );
+		this.fadeIn( duration );
+
+		if ( warp ) {
+
+			const fadeInDuration = this._clip.duration,
+				fadeOutDuration = fadeOutAction._clip.duration,
+
+				startEndRatio = fadeOutDuration / fadeInDuration,
+				endStartRatio = fadeInDuration / fadeOutDuration;
+
+			fadeOutAction.warp( 1.0, startEndRatio, duration );
+			this.warp( endStartRatio, 1.0, duration );
+
+		}
+
+		return this;
+
+	}
+
+	crossFadeTo( fadeInAction, duration, warp ) {
+
+		return fadeInAction.crossFadeFrom( this, duration, warp );
+
+	}
+
+	stopFading() {
+
+		const weightInterpolant = this._weightInterpolant;
+
+		if ( weightInterpolant !== null ) {
+
+			this._weightInterpolant = null;
+			this._mixer._takeBackControlInterpolant( weightInterpolant );
+
+		}
+
+		return this;
+
+	}
+
+	// Time Scale Control
+
+	// set the time scale stopping any scheduled warping
+	// although .paused = true yields an effective time scale of zero, this
+	// method does *not* change .paused, because it would be confusing
+	setEffectiveTimeScale( timeScale ) {
+
+		this.timeScale = timeScale;
+		this._effectiveTimeScale = this.paused ? 0 : timeScale;
+
+		return this.stopWarping();
+
+	}
+
+	// return the time scale considering warping and .paused
+	getEffectiveTimeScale() {
+
+		return this._effectiveTimeScale;
+
+	}
+
+	setDuration( duration ) {
+
+		this.timeScale = this._clip.duration / duration;
+
+		return this.stopWarping();
+
+	}
+
+	syncWith( action ) {
+
+		this.time = action.time;
+		this.timeScale = action.timeScale;
+
+		return this.stopWarping();
+
+	}
+
+	halt( duration ) {
+
+		return this.warp( this._effectiveTimeScale, 0, duration );
+
+	}
+
+	warp( startTimeScale, endTimeScale, duration ) {
+
+		const mixer = this._mixer,
+			now = mixer.time,
+			timeScale = this.timeScale;
+
+		let interpolant = this._timeScaleInterpolant;
+
+		if ( interpolant === null ) {
+
+			interpolant = mixer._lendControlInterpolant();
+			this._timeScaleInterpolant = interpolant;
+
+		}
+
+		const times = interpolant.parameterPositions,
+			values = interpolant.sampleValues;
+
+		times[ 0 ] = now;
+		times[ 1 ] = now + duration;
+
+		values[ 0 ] = startTimeScale / timeScale;
+		values[ 1 ] = endTimeScale / timeScale;
+
+		return this;
+
+	}
+
+	stopWarping() {
+
+		const timeScaleInterpolant = this._timeScaleInterpolant;
+
+		if ( timeScaleInterpolant !== null ) {
+
+			this._timeScaleInterpolant = null;
+			this._mixer._takeBackControlInterpolant( timeScaleInterpolant );
+
+		}
+
+		return this;
+
+	}
+
+	// Object Accessors
+
+	getMixer() {
+
+		return this._mixer;
+
+	}
+
+	getClip() {
+
+		return this._clip;
+
+	}
+
+	getRoot() {
+
+		return this._localRoot || this._mixer._root;
+
+	}
+
+	// Interna
+
+	_update( time, deltaTime, timeDirection, accuIndex ) {
+
+		// called by the mixer
+
+		if ( ! this.enabled ) {
+
+			// call ._updateWeight() to update ._effectiveWeight
+
+			this._updateWeight( time );
+			return;
+
+		}
+
+		const startTime = this._startTime;
+
+		if ( startTime !== null ) {
+
+			// check for scheduled start of action
+
+			const timeRunning = ( time - startTime ) * timeDirection;
+			if ( timeRunning < 0 || timeDirection === 0 ) {
+
+				deltaTime = 0;
+
+			} else {
+
+
+				this._startTime = null; // unschedule
+				deltaTime = timeDirection * timeRunning;
+
+			}
+
+		}
+
+		// apply time scale and advance time
+
+		deltaTime *= this._updateTimeScale( time );
+		const clipTime = this._updateTime( deltaTime );
+
+		// note: _updateTime may disable the action resulting in
+		// an effective weight of 0
+
+		const weight = this._updateWeight( time );
+
+		if ( weight > 0 ) {
+
+			const interpolants = this._interpolants;
+			const propertyMixers = this._propertyBindings;
+
+			switch ( this.blendMode ) {
+
+				case AdditiveAnimationBlendMode:
+
+					for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {
+
+						interpolants[ j ].evaluate( clipTime );
+						propertyMixers[ j ].accumulateAdditive( weight );
+
+					}
+
+					break;
+
+				case NormalAnimationBlendMode:
+				default:
+
+					for ( let j = 0, m = interpolants.length; j !== m; ++ j ) {
+
+						interpolants[ j ].evaluate( clipTime );
+						propertyMixers[ j ].accumulate( accuIndex, weight );
+
+					}
+
+			}
+
+		}
+
+	}
+
+	_updateWeight( time ) {
+
+		let weight = 0;
+
+		if ( this.enabled ) {
+
+			weight = this.weight;
+			const interpolant = this._weightInterpolant;
+
+			if ( interpolant !== null ) {
+
+				const interpolantValue = interpolant.evaluate( time )[ 0 ];
+
+				weight *= interpolantValue;
+
+				if ( time > interpolant.parameterPositions[ 1 ] ) {
+
+					this.stopFading();
+
+					if ( interpolantValue === 0 ) {
+
+						// faded out, disable
+						this.enabled = false;
+
+					}
+
+				}
+
+			}
+
+		}
+
+		this._effectiveWeight = weight;
+		return weight;
+
+	}
+
+	_updateTimeScale( time ) {
+
+		let timeScale = 0;
+
+		if ( ! this.paused ) {
+
+			timeScale = this.timeScale;
+
+			const interpolant = this._timeScaleInterpolant;
+
+			if ( interpolant !== null ) {
+
+				const interpolantValue = interpolant.evaluate( time )[ 0 ];
+
+				timeScale *= interpolantValue;
+
+				if ( time > interpolant.parameterPositions[ 1 ] ) {
+
+					this.stopWarping();
+
+					if ( timeScale === 0 ) {
+
+						// motion has halted, pause
+						this.paused = true;
+
+					} else {
+
+						// warp done - apply final time scale
+						this.timeScale = timeScale;
+
+					}
+
+				}
+
+			}
+
+		}
+
+		this._effectiveTimeScale = timeScale;
+		return timeScale;
+
+	}
+
+	_updateTime( deltaTime ) {
+
+		const duration = this._clip.duration;
+		const loop = this.loop;
+
+		let time = this.time + deltaTime;
+		let loopCount = this._loopCount;
+
+		const pingPong = ( loop === LoopPingPong );
+
+		if ( deltaTime === 0 ) {
+
+			if ( loopCount === - 1 ) return time;
+
+			return ( pingPong && ( loopCount & 1 ) === 1 ) ? duration - time : time;
+
+		}
+
+		if ( loop === LoopOnce ) {
+
+			if ( loopCount === - 1 ) {
+
+				// just started
+
+				this._loopCount = 0;
+				this._setEndings( true, true, false );
+
+			}
+
+			handle_stop: {
+
+				if ( time >= duration ) {
+
+					time = duration;
+
+				} else if ( time < 0 ) {
+
+					time = 0;
+
+				} else {
+
+					this.time = time;
+
+					break handle_stop;
+
+				}
+
+				if ( this.clampWhenFinished ) this.paused = true;
+				else this.enabled = false;
+
+				this.time = time;
+
+				this._mixer.dispatchEvent( {
+					type: 'finished', action: this,
+					direction: deltaTime < 0 ? - 1 : 1
+				} );
+
+			}
+
+		} else { // repetitive Repeat or PingPong
+
+			if ( loopCount === - 1 ) {
+
+				// just started
+
+				if ( deltaTime >= 0 ) {
+
+					loopCount = 0;
+
+					this._setEndings( true, this.repetitions === 0, pingPong );
+
+				} else {
+
+					// when looping in reverse direction, the initial
+					// transition through zero counts as a repetition,
+					// so leave loopCount at -1
+
+					this._setEndings( this.repetitions === 0, true, pingPong );
+
+				}
+
+			}
+
+			if ( time >= duration || time < 0 ) {
+
+				// wrap around
+
+				const loopDelta = Math.floor( time / duration ); // signed
+				time -= duration * loopDelta;
+
+				loopCount += Math.abs( loopDelta );
+
+				const pending = this.repetitions - loopCount;
+
+				if ( pending <= 0 ) {
+
+					// have to stop (switch state, clamp time, fire event)
+
+					if ( this.clampWhenFinished ) this.paused = true;
+					else this.enabled = false;
+
+					time = deltaTime > 0 ? duration : 0;
+
+					this.time = time;
+
+					this._mixer.dispatchEvent( {
+						type: 'finished', action: this,
+						direction: deltaTime > 0 ? 1 : - 1
+					} );
+
+				} else {
+
+					// keep running
+
+					if ( pending === 1 ) {
+
+						// entering the last round
+
+						const atStart = deltaTime < 0;
+						this._setEndings( atStart, ! atStart, pingPong );
+
+					} else {
+
+						this._setEndings( false, false, pingPong );
+
+					}
+
+					this._loopCount = loopCount;
+
+					this.time = time;
+
+					this._mixer.dispatchEvent( {
+						type: 'loop', action: this, loopDelta: loopDelta
+					} );
+
+				}
+
+			} else {
+
+				this.time = time;
+
+			}
+
+			if ( pingPong && ( loopCount & 1 ) === 1 ) {
+
+				// invert time for the "pong round"
+
+				return duration - time;
+
+			}
+
+		}
+
+		return time;
+
+	}
+
+	_setEndings( atStart, atEnd, pingPong ) {
+
+		const settings = this._interpolantSettings;
+
+		if ( pingPong ) {
+
+			settings.endingStart = ZeroSlopeEnding;
+			settings.endingEnd = ZeroSlopeEnding;
+
+		} else {
+
+			// assuming for LoopOnce atStart == atEnd == true
+
+			if ( atStart ) {
+
+				settings.endingStart = this.zeroSlopeAtStart ? ZeroSlopeEnding : ZeroCurvatureEnding;
+
+			} else {
+
+				settings.endingStart = WrapAroundEnding;
+
+			}
+
+			if ( atEnd ) {
+
+				settings.endingEnd = this.zeroSlopeAtEnd ? ZeroSlopeEnding : ZeroCurvatureEnding;
+
+			} else {
+
+				settings.endingEnd 	 = WrapAroundEnding;
+
+			}
+
+		}
+
+	}
+
+	_scheduleFading( duration, weightNow, weightThen ) {
+
+		const mixer = this._mixer, now = mixer.time;
+		let interpolant = this._weightInterpolant;
+
+		if ( interpolant === null ) {
+
+			interpolant = mixer._lendControlInterpolant();
+			this._weightInterpolant = interpolant;
+
+		}
+
+		const times = interpolant.parameterPositions,
+			values = interpolant.sampleValues;
+
+		times[ 0 ] = now;
+		values[ 0 ] = weightNow;
+		times[ 1 ] = now + duration;
+		values[ 1 ] = weightThen;
+
+		return this;
+
+	}
+
+}
+
+const _controlInterpolantsResultBuffer = new Float32Array( 1 );
+
+
+class AnimationMixer extends EventDispatcher {
+
+	constructor( root ) {
+
+		super();
+
+		this._root = root;
+		this._initMemoryManager();
+		this._accuIndex = 0;
+		this.time = 0;
+		this.timeScale = 1.0;
+
+	}
+
+	_bindAction( action, prototypeAction ) {
+
+		const root = action._localRoot || this._root,
+			tracks = action._clip.tracks,
+			nTracks = tracks.length,
+			bindings = action._propertyBindings,
+			interpolants = action._interpolants,
+			rootUuid = root.uuid,
+			bindingsByRoot = this._bindingsByRootAndName;
+
+		let bindingsByName = bindingsByRoot[ rootUuid ];
+
+		if ( bindingsByName === undefined ) {
+
+			bindingsByName = {};
+			bindingsByRoot[ rootUuid ] = bindingsByName;
+
+		}
+
+		for ( let i = 0; i !== nTracks; ++ i ) {
+
+			const track = tracks[ i ],
+				trackName = track.name;
+
+			let binding = bindingsByName[ trackName ];
+
+			if ( binding !== undefined ) {
+
+				++ binding.referenceCount;
+				bindings[ i ] = binding;
+
+			} else {
+
+				binding = bindings[ i ];
+
+				if ( binding !== undefined ) {
+
+					// existing binding, make sure the cache knows
+
+					if ( binding._cacheIndex === null ) {
+
+						++ binding.referenceCount;
+						this._addInactiveBinding( binding, rootUuid, trackName );
+
+					}
+
+					continue;
+
+				}
+
+				const path = prototypeAction && prototypeAction.
+					_propertyBindings[ i ].binding.parsedPath;
+
+				binding = new PropertyMixer(
+					PropertyBinding.create( root, trackName, path ),
+					track.ValueTypeName, track.getValueSize() );
+
+				++ binding.referenceCount;
+				this._addInactiveBinding( binding, rootUuid, trackName );
+
+				bindings[ i ] = binding;
+
+			}
+
+			interpolants[ i ].resultBuffer = binding.buffer;
+
+		}
+
+	}
+
+	_activateAction( action ) {
+
+		if ( ! this._isActiveAction( action ) ) {
+
+			if ( action._cacheIndex === null ) {
+
+				// this action has been forgotten by the cache, but the user
+				// appears to be still using it -> rebind
+
+				const rootUuid = ( action._localRoot || this._root ).uuid,
+					clipUuid = action._clip.uuid,
+					actionsForClip = this._actionsByClip[ clipUuid ];
+
+				this._bindAction( action,
+					actionsForClip && actionsForClip.knownActions[ 0 ] );
+
+				this._addInactiveAction( action, clipUuid, rootUuid );
+
+			}
+
+			const bindings = action._propertyBindings;
+
+			// increment reference counts / sort out state
+			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {
+
+				const binding = bindings[ i ];
+
+				if ( binding.useCount ++ === 0 ) {
+
+					this._lendBinding( binding );
+					binding.saveOriginalState();
+
+				}
+
+			}
+
+			this._lendAction( action );
+
+		}
+
+	}
+
+	_deactivateAction( action ) {
+
+		if ( this._isActiveAction( action ) ) {
+
+			const bindings = action._propertyBindings;
+
+			// decrement reference counts / sort out state
+			for ( let i = 0, n = bindings.length; i !== n; ++ i ) {
+
+				const binding = bindings[ i ];
+
+				if ( -- binding.useCount === 0 ) {
+
+					binding.restoreOriginalState();
+					this._takeBackBinding( binding );
+
+				}
+
+			}
+
+			this._takeBackAction( action );
+
+		}
+
+	}
+
+	// Memory manager
+
+	_initMemoryManager() {
+
+		this._actions = []; // 'nActiveActions' followed by inactive ones
+		this._nActiveActions = 0;
+
+		this._actionsByClip = {};
+		// inside:
+		// {
+		// 	knownActions: Array< AnimationAction > - used as prototypes
+		// 	actionByRoot: AnimationAction - lookup
+		// }
+
+
+		this._bindings = []; // 'nActiveBindings' followed by inactive ones
+		this._nActiveBindings = 0;
+
+		this._bindingsByRootAndName = {}; // inside: Map< name, PropertyMixer >
+
+
+		this._controlInterpolants = []; // same game as above
+		this._nActiveControlInterpolants = 0;
+
+		const scope = this;
+
+		this.stats = {
+
+			actions: {
+				get total() {
+
+					return scope._actions.length;
+
+				},
+				get inUse() {
+
+					return scope._nActiveActions;
+
+				}
+			},
+			bindings: {
+				get total() {
+
+					return scope._bindings.length;
+
+				},
+				get inUse() {
+
+					return scope._nActiveBindings;
+
+				}
+			},
+			controlInterpolants: {
+				get total() {
+
+					return scope._controlInterpolants.length;
+
+				},
+				get inUse() {
+
+					return scope._nActiveControlInterpolants;
+
+				}
+			}
+
+		};
+
+	}
+
+	// Memory management for AnimationAction objects
+
+	_isActiveAction( action ) {
+
+		const index = action._cacheIndex;
+		return index !== null && index < this._nActiveActions;
+
+	}
+
+	_addInactiveAction( action, clipUuid, rootUuid ) {
+
+		const actions = this._actions,
+			actionsByClip = this._actionsByClip;
+
+		let actionsForClip = actionsByClip[ clipUuid ];
+
+		if ( actionsForClip === undefined ) {
+
+			actionsForClip = {
+
+				knownActions: [ action ],
+				actionByRoot: {}
+
+			};
+
+			action._byClipCacheIndex = 0;
+
+			actionsByClip[ clipUuid ] = actionsForClip;
+
+		} else {
+
+			const knownActions = actionsForClip.knownActions;
+
+			action._byClipCacheIndex = knownActions.length;
+			knownActions.push( action );
+
+		}
+
+		action._cacheIndex = actions.length;
+		actions.push( action );
+
+		actionsForClip.actionByRoot[ rootUuid ] = action;
+
+	}
+
+	_removeInactiveAction( action ) {
+
+		const actions = this._actions,
+			lastInactiveAction = actions[ actions.length - 1 ],
+			cacheIndex = action._cacheIndex;
+
+		lastInactiveAction._cacheIndex = cacheIndex;
+		actions[ cacheIndex ] = lastInactiveAction;
+		actions.pop();
+
+		action._cacheIndex = null;
+
+
+		const clipUuid = action._clip.uuid,
+			actionsByClip = this._actionsByClip,
+			actionsForClip = actionsByClip[ clipUuid ],
+			knownActionsForClip = actionsForClip.knownActions,
+
+			lastKnownAction =
+				knownActionsForClip[ knownActionsForClip.length - 1 ],
+
+			byClipCacheIndex = action._byClipCacheIndex;
+
+		lastKnownAction._byClipCacheIndex = byClipCacheIndex;
+		knownActionsForClip[ byClipCacheIndex ] = lastKnownAction;
+		knownActionsForClip.pop();
+
+		action._byClipCacheIndex = null;
+
+
+		const actionByRoot = actionsForClip.actionByRoot,
+			rootUuid = ( action._localRoot || this._root ).uuid;
+
+		delete actionByRoot[ rootUuid ];
+
+		if ( knownActionsForClip.length === 0 ) {
+
+			delete actionsByClip[ clipUuid ];
+
+		}
+
+		this._removeInactiveBindingsForAction( action );
+
+	}
+
+	_removeInactiveBindingsForAction( action ) {
+
+		const bindings = action._propertyBindings;
+
+		for ( let i = 0, n = bindings.length; i !== n; ++ i ) {
+
+			const binding = bindings[ i ];
+
+			if ( -- binding.referenceCount === 0 ) {
+
+				this._removeInactiveBinding( binding );
+
+			}
+
+		}
+
+	}
+
+	_lendAction( action ) {
+
+		// [ active actions |  inactive actions  ]
+		// [  active actions >| inactive actions ]
+		//                 s        a
+		//                  <-swap->
+		//                 a        s
+
+		const actions = this._actions,
+			prevIndex = action._cacheIndex,
+
+			lastActiveIndex = this._nActiveActions ++,
+
+			firstInactiveAction = actions[ lastActiveIndex ];
+
+		action._cacheIndex = lastActiveIndex;
+		actions[ lastActiveIndex ] = action;
+
+		firstInactiveAction._cacheIndex = prevIndex;
+		actions[ prevIndex ] = firstInactiveAction;
+
+	}
+
+	_takeBackAction( action ) {
+
+		// [  active actions  | inactive actions ]
+		// [ active actions |< inactive actions  ]
+		//        a        s
+		//         <-swap->
+		//        s        a
+
+		const actions = this._actions,
+			prevIndex = action._cacheIndex,
+
+			firstInactiveIndex = -- this._nActiveActions,
+
+			lastActiveAction = actions[ firstInactiveIndex ];
+
+		action._cacheIndex = firstInactiveIndex;
+		actions[ firstInactiveIndex ] = action;
+
+		lastActiveAction._cacheIndex = prevIndex;
+		actions[ prevIndex ] = lastActiveAction;
+
+	}
+
+	// Memory management for PropertyMixer objects
+
+	_addInactiveBinding( binding, rootUuid, trackName ) {
+
+		const bindingsByRoot = this._bindingsByRootAndName,
+			bindings = this._bindings;
+
+		let bindingByName = bindingsByRoot[ rootUuid ];
+
+		if ( bindingByName === undefined ) {
+
+			bindingByName = {};
+			bindingsByRoot[ rootUuid ] = bindingByName;
+
+		}
+
+		bindingByName[ trackName ] = binding;
+
+		binding._cacheIndex = bindings.length;
+		bindings.push( binding );
+
+	}
+
+	_removeInactiveBinding( binding ) {
+
+		const bindings = this._bindings,
+			propBinding = binding.binding,
+			rootUuid = propBinding.rootNode.uuid,
+			trackName = propBinding.path,
+			bindingsByRoot = this._bindingsByRootAndName,
+			bindingByName = bindingsByRoot[ rootUuid ],
+
+			lastInactiveBinding = bindings[ bindings.length - 1 ],
+			cacheIndex = binding._cacheIndex;
+
+		lastInactiveBinding._cacheIndex = cacheIndex;
+		bindings[ cacheIndex ] = lastInactiveBinding;
+		bindings.pop();
+
+		delete bindingByName[ trackName ];
+
+		if ( Object.keys( bindingByName ).length === 0 ) {
+
+			delete bindingsByRoot[ rootUuid ];
+
+		}
+
+	}
+
+	_lendBinding( binding ) {
+
+		const bindings = this._bindings,
+			prevIndex = binding._cacheIndex,
+
+			lastActiveIndex = this._nActiveBindings ++,
+
+			firstInactiveBinding = bindings[ lastActiveIndex ];
+
+		binding._cacheIndex = lastActiveIndex;
+		bindings[ lastActiveIndex ] = binding;
+
+		firstInactiveBinding._cacheIndex = prevIndex;
+		bindings[ prevIndex ] = firstInactiveBinding;
+
+	}
+
+	_takeBackBinding( binding ) {
+
+		const bindings = this._bindings,
+			prevIndex = binding._cacheIndex,
+
+			firstInactiveIndex = -- this._nActiveBindings,
+
+			lastActiveBinding = bindings[ firstInactiveIndex ];
+
+		binding._cacheIndex = firstInactiveIndex;
+		bindings[ firstInactiveIndex ] = binding;
+
+		lastActiveBinding._cacheIndex = prevIndex;
+		bindings[ prevIndex ] = lastActiveBinding;
+
+	}
+
+
+	// Memory management of Interpolants for weight and time scale
+
+	_lendControlInterpolant() {
+
+		const interpolants = this._controlInterpolants,
+			lastActiveIndex = this._nActiveControlInterpolants ++;
+
+		let interpolant = interpolants[ lastActiveIndex ];
+
+		if ( interpolant === undefined ) {
+
+			interpolant = new LinearInterpolant(
+				new Float32Array( 2 ), new Float32Array( 2 ),
+				1, _controlInterpolantsResultBuffer );
+
+			interpolant.__cacheIndex = lastActiveIndex;
+			interpolants[ lastActiveIndex ] = interpolant;
+
+		}
+
+		return interpolant;
+
+	}
+
+	_takeBackControlInterpolant( interpolant ) {
+
+		const interpolants = this._controlInterpolants,
+			prevIndex = interpolant.__cacheIndex,
+
+			firstInactiveIndex = -- this._nActiveControlInterpolants,
+
+			lastActiveInterpolant = interpolants[ firstInactiveIndex ];
+
+		interpolant.__cacheIndex = firstInactiveIndex;
+		interpolants[ firstInactiveIndex ] = interpolant;
+
+		lastActiveInterpolant.__cacheIndex = prevIndex;
+		interpolants[ prevIndex ] = lastActiveInterpolant;
+
+	}
+
+	// return an action for a clip optionally using a custom root target
+	// object (this method allocates a lot of dynamic memory in case a
+	// previously unknown clip/root combination is specified)
+	clipAction( clip, optionalRoot, blendMode ) {
+
+		const root = optionalRoot || this._root,
+			rootUuid = root.uuid;
+
+		let clipObject = typeof clip === 'string' ? AnimationClip.findByName( root, clip ) : clip;
+
+		const clipUuid = clipObject !== null ? clipObject.uuid : clip;
+
+		const actionsForClip = this._actionsByClip[ clipUuid ];
+		let prototypeAction = null;
+
+		if ( blendMode === undefined ) {
+
+			if ( clipObject !== null ) {
+
+				blendMode = clipObject.blendMode;
+
+			} else {
+
+				blendMode = NormalAnimationBlendMode;
+
+			}
+
+		}
+
+		if ( actionsForClip !== undefined ) {
+
+			const existingAction = actionsForClip.actionByRoot[ rootUuid ];
+
+			if ( existingAction !== undefined && existingAction.blendMode === blendMode ) {
+
+				return existingAction;
+
+			}
+
+			// we know the clip, so we don't have to parse all
+			// the bindings again but can just copy
+			prototypeAction = actionsForClip.knownActions[ 0 ];
+
+			// also, take the clip from the prototype action
+			if ( clipObject === null )
+				clipObject = prototypeAction._clip;
+
+		}
+
+		// clip must be known when specified via string
+		if ( clipObject === null ) return null;
+
+		// allocate all resources required to run it
+		const newAction = new AnimationAction( this, clipObject, optionalRoot, blendMode );
+
+		this._bindAction( newAction, prototypeAction );
+
+		// and make the action known to the memory manager
+		this._addInactiveAction( newAction, clipUuid, rootUuid );
+
+		return newAction;
+
+	}
+
+	// get an existing action
+	existingAction( clip, optionalRoot ) {
+
+		const root = optionalRoot || this._root,
+			rootUuid = root.uuid,
+
+			clipObject = typeof clip === 'string' ?
+				AnimationClip.findByName( root, clip ) : clip,
+
+			clipUuid = clipObject ? clipObject.uuid : clip,
+
+			actionsForClip = this._actionsByClip[ clipUuid ];
+
+		if ( actionsForClip !== undefined ) {
+
+			return actionsForClip.actionByRoot[ rootUuid ] || null;
+
+		}
+
+		return null;
+
+	}
+
+	// deactivates all previously scheduled actions
+	stopAllAction() {
+
+		const actions = this._actions,
+			nActions = this._nActiveActions;
+
+		for ( let i = nActions - 1; i >= 0; -- i ) {
+
+			actions[ i ].stop();
+
+		}
+
+		return this;
+
+	}
+
+	// advance the time and update apply the animation
+	update( deltaTime ) {
+
+		deltaTime *= this.timeScale;
+
+		const actions = this._actions,
+			nActions = this._nActiveActions,
+
+			time = this.time += deltaTime,
+			timeDirection = Math.sign( deltaTime ),
+
+			accuIndex = this._accuIndex ^= 1;
+
+		// run active actions
+
+		for ( let i = 0; i !== nActions; ++ i ) {
+
+			const action = actions[ i ];
+
+			action._update( time, deltaTime, timeDirection, accuIndex );
+
+		}
+
+		// update scene graph
+
+		const bindings = this._bindings,
+			nBindings = this._nActiveBindings;
+
+		for ( let i = 0; i !== nBindings; ++ i ) {
+
+			bindings[ i ].apply( accuIndex );
+
+		}
+
+		return this;
+
+	}
+
+	// Allows you to seek to a specific time in an animation.
+	setTime( timeInSeconds ) {
+
+		this.time = 0; // Zero out time attribute for AnimationMixer object;
+		for ( let i = 0; i < this._actions.length; i ++ ) {
+
+			this._actions[ i ].time = 0; // Zero out time attribute for all associated AnimationAction objects.
+
+		}
+
+		return this.update( timeInSeconds ); // Update used to set exact time. Returns "this" AnimationMixer object.
+
+	}
+
+	// return this mixer's root target object
+	getRoot() {
+
+		return this._root;
+
+	}
+
+	// free all resources specific to a particular clip
+	uncacheClip( clip ) {
+
+		const actions = this._actions,
+			clipUuid = clip.uuid,
+			actionsByClip = this._actionsByClip,
+			actionsForClip = actionsByClip[ clipUuid ];
+
+		if ( actionsForClip !== undefined ) {
+
+			// note: just calling _removeInactiveAction would mess up the
+			// iteration state and also require updating the state we can
+			// just throw away
+
+			const actionsToRemove = actionsForClip.knownActions;
+
+			for ( let i = 0, n = actionsToRemove.length; i !== n; ++ i ) {
+
+				const action = actionsToRemove[ i ];
+
+				this._deactivateAction( action );
+
+				const cacheIndex = action._cacheIndex,
+					lastInactiveAction = actions[ actions.length - 1 ];
+
+				action._cacheIndex = null;
+				action._byClipCacheIndex = null;
+
+				lastInactiveAction._cacheIndex = cacheIndex;
+				actions[ cacheIndex ] = lastInactiveAction;
+				actions.pop();
+
+				this._removeInactiveBindingsForAction( action );
+
+			}
+
+			delete actionsByClip[ clipUuid ];
+
+		}
+
+	}
+
+	// free all resources specific to a particular root target object
+	uncacheRoot( root ) {
+
+		const rootUuid = root.uuid,
+			actionsByClip = this._actionsByClip;
+
+		for ( const clipUuid in actionsByClip ) {
+
+			const actionByRoot = actionsByClip[ clipUuid ].actionByRoot,
+				action = actionByRoot[ rootUuid ];
+
+			if ( action !== undefined ) {
+
+				this._deactivateAction( action );
+				this._removeInactiveAction( action );
+
+			}
+
+		}
+
+		const bindingsByRoot = this._bindingsByRootAndName,
+			bindingByName = bindingsByRoot[ rootUuid ];
+
+		if ( bindingByName !== undefined ) {
+
+			for ( const trackName in bindingByName ) {
+
+				const binding = bindingByName[ trackName ];
+				binding.restoreOriginalState();
+				this._removeInactiveBinding( binding );
+
+			}
+
+		}
+
+	}
+
+	// remove a targeted clip from the cache
+	uncacheAction( clip, optionalRoot ) {
+
+		const action = this.existingAction( clip, optionalRoot );
+
+		if ( action !== null ) {
+
+			this._deactivateAction( action );
+			this._removeInactiveAction( action );
+
+		}
+
+	}
+
+}
+
+class Uniform {
+
+	constructor( value ) {
+
+		this.value = value;
+
+	}
+
+	clone() {
+
+		return new Uniform( this.value.clone === undefined ? this.value : this.value.clone() );
+
+	}
+
+}
+
+let _id = 0;
+
+class UniformsGroup extends EventDispatcher {
+
+	constructor() {
+
+		super();
+
+		this.isUniformsGroup = true;
+
+		Object.defineProperty( this, 'id', { value: _id ++ } );
+
+		this.name = '';
+
+		this.usage = StaticDrawUsage;
+		this.uniforms = [];
+
+	}
+
+	add( uniform ) {
+
+		this.uniforms.push( uniform );
+
+		return this;
+
+	}
+
+	remove( uniform ) {
+
+		const index = this.uniforms.indexOf( uniform );
+
+		if ( index !== - 1 ) this.uniforms.splice( index, 1 );
+
+		return this;
+
+	}
+
+	setName( name ) {
+
+		this.name = name;
+
+		return this;
+
+	}
+
+	setUsage( value ) {
+
+		this.usage = value;
+
+		return this;
+
+	}
+
+	dispose() {
+
+		this.dispatchEvent( { type: 'dispose' } );
+
+		return this;
+
+	}
+
+	copy( source ) {
+
+		this.name = source.name;
+		this.usage = source.usage;
+
+		const uniformsSource = source.uniforms;
+
+		this.uniforms.length = 0;
+
+		for ( let i = 0, l = uniformsSource.length; i < l; i ++ ) {
+
+			const uniforms = Array.isArray( uniformsSource[ i ] ) ? uniformsSource[ i ] : [ uniformsSource[ i ] ];
+
+			for ( let j = 0; j < uniforms.length; j ++ ) {
+
+				this.uniforms.push( uniforms[ j ].clone() );
+
+			}
+
+		}
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+}
+
+class InstancedInterleavedBuffer extends InterleavedBuffer {
+
+	constructor( array, stride, meshPerAttribute = 1 ) {
+
+		super( array, stride );
+
+		this.isInstancedInterleavedBuffer = true;
+
+		this.meshPerAttribute = meshPerAttribute;
+
+	}
+
+	copy( source ) {
+
+		super.copy( source );
+
+		this.meshPerAttribute = source.meshPerAttribute;
+
+		return this;
+
+	}
+
+	clone( data ) {
+
+		const ib = super.clone( data );
+
+		ib.meshPerAttribute = this.meshPerAttribute;
+
+		return ib;
+
+	}
+
+	toJSON( data ) {
+
+		const json = super.toJSON( data );
+
+		json.isInstancedInterleavedBuffer = true;
+		json.meshPerAttribute = this.meshPerAttribute;
+
+		return json;
+
+	}
+
+}
+
+class GLBufferAttribute {
+
+	constructor( buffer, type, itemSize, elementSize, count ) {
+
+		this.isGLBufferAttribute = true;
+
+		this.name = '';
+
+		this.buffer = buffer;
+		this.type = type;
+		this.itemSize = itemSize;
+		this.elementSize = elementSize;
+		this.count = count;
+
+		this.version = 0;
+
+	}
+
+	set needsUpdate( value ) {
+
+		if ( value === true ) this.version ++;
+
+	}
+
+	setBuffer( buffer ) {
+
+		this.buffer = buffer;
+
+		return this;
+
+	}
+
+	setType( type, elementSize ) {
+
+		this.type = type;
+		this.elementSize = elementSize;
+
+		return this;
+
+	}
+
+	setItemSize( itemSize ) {
+
+		this.itemSize = itemSize;
+
+		return this;
+
+	}
+
+	setCount( count ) {
+
+		this.count = count;
+
+		return this;
+
+	}
+
+}
+
+const _matrix = /*@__PURE__*/ new Matrix4();
+
+class Raycaster {
+
+	constructor( origin, direction, near = 0, far = Infinity ) {
+
+		this.ray = new Ray( origin, direction );
+		// direction is assumed to be normalized (for accurate distance calculations)
+
+		this.near = near;
+		this.far = far;
+		this.camera = null;
+		this.layers = new Layers();
+
+		this.params = {
+			Mesh: {},
+			Line: { threshold: 1 },
+			LOD: {},
+			Points: { threshold: 1 },
+			Sprite: {}
+		};
+
+	}
+
+	set( origin, direction ) {
+
+		// direction is assumed to be normalized (for accurate distance calculations)
+
+		this.ray.set( origin, direction );
+
+	}
+
+	setFromCamera( coords, camera ) {
+
+		if ( camera.isPerspectiveCamera ) {
+
+			this.ray.origin.setFromMatrixPosition( camera.matrixWorld );
+			this.ray.direction.set( coords.x, coords.y, 0.5 ).unproject( camera ).sub( this.ray.origin ).normalize();
+			this.camera = camera;
+
+		} else if ( camera.isOrthographicCamera ) {
+
+			this.ray.origin.set( coords.x, coords.y, ( camera.near + camera.far ) / ( camera.near - camera.far ) ).unproject( camera ); // set origin in plane of camera
+			this.ray.direction.set( 0, 0, - 1 ).transformDirection( camera.matrixWorld );
+			this.camera = camera;
+
+		} else {
+
+			console.error( 'THREE.Raycaster: Unsupported camera type: ' + camera.type );
+
+		}
+
+	}
+
+	setFromXRController( controller ) {
+
+		_matrix.identity().extractRotation( controller.matrixWorld );
+
+		this.ray.origin.setFromMatrixPosition( controller.matrixWorld );
+		this.ray.direction.set( 0, 0, - 1 ).applyMatrix4( _matrix );
+
+		return this;
+
+	}
+
+	intersectObject( object, recursive = true, intersects = [] ) {
+
+		intersect( object, this, intersects, recursive );
+
+		intersects.sort( ascSort );
+
+		return intersects;
+
+	}
+
+	intersectObjects( objects, recursive = true, intersects = [] ) {
+
+		for ( let i = 0, l = objects.length; i < l; i ++ ) {
+
+			intersect( objects[ i ], this, intersects, recursive );
+
+		}
+
+		intersects.sort( ascSort );
+
+		return intersects;
+
+	}
+
+}
+
+function ascSort( a, b ) {
+
+	return a.distance - b.distance;
+
+}
+
+function intersect( object, raycaster, intersects, recursive ) {
+
+	let propagate = true;
+
+	if ( object.layers.test( raycaster.layers ) ) {
+
+		const result = object.raycast( raycaster, intersects );
+
+		if ( result === false ) propagate = false;
+
+	}
+
+	if ( propagate === true && recursive === true ) {
+
+		const children = object.children;
+
+		for ( let i = 0, l = children.length; i < l; i ++ ) {
+
+			intersect( children[ i ], raycaster, intersects, true );
+
+		}
+
+	}
+
+}
+
+/**
+ * Ref: https://en.wikipedia.org/wiki/Spherical_coordinate_system
+ *
+ * phi (the polar angle) is measured from the positive y-axis. The positive y-axis is up.
+ * theta (the azimuthal angle) is measured from the positive z-axis.
+ */
+class Spherical {
+
+	constructor( radius = 1, phi = 0, theta = 0 ) {
+
+		this.radius = radius;
+		this.phi = phi; // polar angle
+		this.theta = theta; // azimuthal angle
+
+		return this;
+
+	}
+
+	set( radius, phi, theta ) {
+
+		this.radius = radius;
+		this.phi = phi;
+		this.theta = theta;
+
+		return this;
+
+	}
+
+	copy( other ) {
+
+		this.radius = other.radius;
+		this.phi = other.phi;
+		this.theta = other.theta;
+
+		return this;
+
+	}
+
+	// restrict phi to be between EPS and PI-EPS
+	makeSafe() {
+
+		const EPS = 0.000001;
+		this.phi = Math.max( EPS, Math.min( Math.PI - EPS, this.phi ) );
+
+		return this;
+
+	}
+
+	setFromVector3( v ) {
+
+		return this.setFromCartesianCoords( v.x, v.y, v.z );
+
+	}
+
+	setFromCartesianCoords( x, y, z ) {
+
+		this.radius = Math.sqrt( x * x + y * y + z * z );
+
+		if ( this.radius === 0 ) {
+
+			this.theta = 0;
+			this.phi = 0;
+
+		} else {
+
+			this.theta = Math.atan2( x, z );
+			this.phi = Math.acos( clamp( y / this.radius, - 1, 1 ) );
+
+		}
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+}
+
+/**
+ * Ref: https://en.wikipedia.org/wiki/Cylindrical_coordinate_system
+ */
+
+class Cylindrical {
+
+	constructor( radius = 1, theta = 0, y = 0 ) {
+
+		this.radius = radius; // distance from the origin to a point in the x-z plane
+		this.theta = theta; // counterclockwise angle in the x-z plane measured in radians from the positive z-axis
+		this.y = y; // height above the x-z plane
+
+		return this;
+
+	}
+
+	set( radius, theta, y ) {
+
+		this.radius = radius;
+		this.theta = theta;
+		this.y = y;
+
+		return this;
+
+	}
+
+	copy( other ) {
+
+		this.radius = other.radius;
+		this.theta = other.theta;
+		this.y = other.y;
+
+		return this;
+
+	}
+
+	setFromVector3( v ) {
+
+		return this.setFromCartesianCoords( v.x, v.y, v.z );
+
+	}
+
+	setFromCartesianCoords( x, y, z ) {
+
+		this.radius = Math.sqrt( x * x + z * z );
+		this.theta = Math.atan2( x, z );
+		this.y = y;
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+}
+
+class Matrix2 {
+
+	constructor( n11, n12, n21, n22 ) {
+
+		Matrix2.prototype.isMatrix2 = true;
+
+		this.elements = [
+			1, 0,
+			0, 1,
+		];
+
+		if ( n11 !== undefined ) {
+
+			this.set( n11, n12, n21, n22 );
+
+		}
+
+	}
+
+	identity() {
+
+		this.set(
+			1, 0,
+			0, 1,
+		);
+
+		return this;
+
+	}
+
+	fromArray( array, offset = 0 ) {
+
+		for ( let i = 0; i < 4; i ++ ) {
+
+			this.elements[ i ] = array[ i + offset ];
+
+		}
+
+		return this;
+
+	}
+
+	set( n11, n12, n21, n22 ) {
+
+		const te = this.elements;
+
+		te[ 0 ] = n11; te[ 2 ] = n12;
+		te[ 1 ] = n21; te[ 3 ] = n22;
+
+		return this;
+
+	}
+
+}
+
+const _vector$4 = /*@__PURE__*/ new Vector2();
+
+class Box2 {
+
+	constructor( min = new Vector2( + Infinity, + Infinity ), max = new Vector2( - Infinity, - Infinity ) ) {
+
+		this.isBox2 = true;
+
+		this.min = min;
+		this.max = max;
+
+	}
+
+	set( min, max ) {
+
+		this.min.copy( min );
+		this.max.copy( max );
+
+		return this;
+
+	}
+
+	setFromPoints( points ) {
+
+		this.makeEmpty();
+
+		for ( let i = 0, il = points.length; i < il; i ++ ) {
+
+			this.expandByPoint( points[ i ] );
+
+		}
+
+		return this;
+
+	}
+
+	setFromCenterAndSize( center, size ) {
+
+		const halfSize = _vector$4.copy( size ).multiplyScalar( 0.5 );
+		this.min.copy( center ).sub( halfSize );
+		this.max.copy( center ).add( halfSize );
+
+		return this;
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+	copy( box ) {
+
+		this.min.copy( box.min );
+		this.max.copy( box.max );
+
+		return this;
+
+	}
+
+	makeEmpty() {
+
+		this.min.x = this.min.y = + Infinity;
+		this.max.x = this.max.y = - Infinity;
+
+		return this;
+
+	}
+
+	isEmpty() {
+
+		// this is a more robust check for empty than ( volume <= 0 ) because volume can get positive with two negative axes
+
+		return ( this.max.x < this.min.x ) || ( this.max.y < this.min.y );
+
+	}
+
+	getCenter( target ) {
+
+		return this.isEmpty() ? target.set( 0, 0 ) : target.addVectors( this.min, this.max ).multiplyScalar( 0.5 );
+
+	}
+
+	getSize( target ) {
+
+		return this.isEmpty() ? target.set( 0, 0 ) : target.subVectors( this.max, this.min );
+
+	}
+
+	expandByPoint( point ) {
+
+		this.min.min( point );
+		this.max.max( point );
+
+		return this;
+
+	}
+
+	expandByVector( vector ) {
+
+		this.min.sub( vector );
+		this.max.add( vector );
+
+		return this;
+
+	}
+
+	expandByScalar( scalar ) {
+
+		this.min.addScalar( - scalar );
+		this.max.addScalar( scalar );
+
+		return this;
+
+	}
+
+	containsPoint( point ) {
+
+		return point.x >= this.min.x && point.x <= this.max.x &&
+			point.y >= this.min.y && point.y <= this.max.y;
+
+	}
+
+	containsBox( box ) {
+
+		return this.min.x <= box.min.x && box.max.x <= this.max.x &&
+			this.min.y <= box.min.y && box.max.y <= this.max.y;
+
+	}
+
+	getParameter( point, target ) {
+
+		// This can potentially have a divide by zero if the box
+		// has a size dimension of 0.
+
+		return target.set(
+			( point.x - this.min.x ) / ( this.max.x - this.min.x ),
+			( point.y - this.min.y ) / ( this.max.y - this.min.y )
+		);
+
+	}
+
+	intersectsBox( box ) {
+
+		// using 4 splitting planes to rule out intersections
+
+		return box.max.x >= this.min.x && box.min.x <= this.max.x &&
+			box.max.y >= this.min.y && box.min.y <= this.max.y;
+
+	}
+
+	clampPoint( point, target ) {
+
+		return target.copy( point ).clamp( this.min, this.max );
+
+	}
+
+	distanceToPoint( point ) {
+
+		return this.clampPoint( point, _vector$4 ).distanceTo( point );
+
+	}
+
+	intersect( box ) {
+
+		this.min.max( box.min );
+		this.max.min( box.max );
+
+		if ( this.isEmpty() ) this.makeEmpty();
+
+		return this;
+
+	}
+
+	union( box ) {
+
+		this.min.min( box.min );
+		this.max.max( box.max );
+
+		return this;
+
+	}
+
+	translate( offset ) {
+
+		this.min.add( offset );
+		this.max.add( offset );
+
+		return this;
+
+	}
+
+	equals( box ) {
+
+		return box.min.equals( this.min ) && box.max.equals( this.max );
+
+	}
+
+}
+
+const _startP = /*@__PURE__*/ new Vector3();
+const _startEnd = /*@__PURE__*/ new Vector3();
+
+class Line3 {
+
+	constructor( start = new Vector3(), end = new Vector3() ) {
+
+		this.start = start;
+		this.end = end;
+
+	}
+
+	set( start, end ) {
+
+		this.start.copy( start );
+		this.end.copy( end );
+
+		return this;
+
+	}
+
+	copy( line ) {
+
+		this.start.copy( line.start );
+		this.end.copy( line.end );
+
+		return this;
+
+	}
+
+	getCenter( target ) {
+
+		return target.addVectors( this.start, this.end ).multiplyScalar( 0.5 );
+
+	}
+
+	delta( target ) {
+
+		return target.subVectors( this.end, this.start );
+
+	}
+
+	distanceSq() {
+
+		return this.start.distanceToSquared( this.end );
+
+	}
+
+	distance() {
+
+		return this.start.distanceTo( this.end );
+
+	}
+
+	at( t, target ) {
+
+		return this.delta( target ).multiplyScalar( t ).add( this.start );
+
+	}
+
+	closestPointToPointParameter( point, clampToLine ) {
+
+		_startP.subVectors( point, this.start );
+		_startEnd.subVectors( this.end, this.start );
+
+		const startEnd2 = _startEnd.dot( _startEnd );
+		const startEnd_startP = _startEnd.dot( _startP );
+
+		let t = startEnd_startP / startEnd2;
+
+		if ( clampToLine ) {
+
+			t = clamp( t, 0, 1 );
+
+		}
+
+		return t;
+
+	}
+
+	closestPointToPoint( point, clampToLine, target ) {
+
+		const t = this.closestPointToPointParameter( point, clampToLine );
+
+		return this.delta( target ).multiplyScalar( t ).add( this.start );
+
+	}
+
+	applyMatrix4( matrix ) {
+
+		this.start.applyMatrix4( matrix );
+		this.end.applyMatrix4( matrix );
+
+		return this;
+
+	}
+
+	equals( line ) {
+
+		return line.start.equals( this.start ) && line.end.equals( this.end );
+
+	}
+
+	clone() {
+
+		return new this.constructor().copy( this );
+
+	}
+
+}
+
+const _vector$3 = /*@__PURE__*/ new Vector3();
+
+class SpotLightHelper extends Object3D {
+
+	constructor( light, color ) {
+
+		super();
+
+		this.light = light;
+
+		this.matrixAutoUpdate = false;
+
+		this.color = color;
+
+		this.type = 'SpotLightHelper';
+
+		const geometry = new BufferGeometry();
+
+		const positions = [
+			0, 0, 0, 	0, 0, 1,
+			0, 0, 0, 	1, 0, 1,
+			0, 0, 0,	- 1, 0, 1,
+			0, 0, 0, 	0, 1, 1,
+			0, 0, 0, 	0, - 1, 1
+		];
+
+		for ( let i = 0, j = 1, l = 32; i < l; i ++, j ++ ) {
+
+			const p1 = ( i / l ) * Math.PI * 2;
+			const p2 = ( j / l ) * Math.PI * 2;
+
+			positions.push(
+				Math.cos( p1 ), Math.sin( p1 ), 1,
+				Math.cos( p2 ), Math.sin( p2 ), 1
+			);
+
+		}
+
+		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
+
+		const material = new LineBasicMaterial( { fog: false, toneMapped: false } );
+
+		this.cone = new LineSegments( geometry, material );
+		this.add( this.cone );
+
+		this.update();
+
+	}
+
+	dispose() {
+
+		this.cone.geometry.dispose();
+		this.cone.material.dispose();
+
+	}
+
+	update() {
+
+		this.light.updateWorldMatrix( true, false );
+		this.light.target.updateWorldMatrix( true, false );
+
+		// update the local matrix based on the parent and light target transforms
+		if ( this.parent ) {
+
+			this.parent.updateWorldMatrix( true );
+
+			this.matrix
+				.copy( this.parent.matrixWorld )
+				.invert()
+				.multiply( this.light.matrixWorld );
+
+		} else {
+
+			this.matrix.copy( this.light.matrixWorld );
+
+		}
+
+		this.matrixWorld.copy( this.light.matrixWorld );
+
+		const coneLength = this.light.distance ? this.light.distance : 1000;
+		const coneWidth = coneLength * Math.tan( this.light.angle );
+
+		this.cone.scale.set( coneWidth, coneWidth, coneLength );
+
+		_vector$3.setFromMatrixPosition( this.light.target.matrixWorld );
+
+		this.cone.lookAt( _vector$3 );
+
+		if ( this.color !== undefined ) {
+
+			this.cone.material.color.set( this.color );
+
+		} else {
+
+			this.cone.material.color.copy( this.light.color );
+
+		}
+
+	}
+
+}
+
+const _vector$2 = /*@__PURE__*/ new Vector3();
+const _boneMatrix = /*@__PURE__*/ new Matrix4();
+const _matrixWorldInv = /*@__PURE__*/ new Matrix4();
+
+
+class SkeletonHelper extends LineSegments {
+
+	constructor( object ) {
+
+		const bones = getBoneList( object );
+
+		const geometry = new BufferGeometry();
+
+		const vertices = [];
+		const colors = [];
+
+		const color1 = new Color( 0, 0, 1 );
+		const color2 = new Color( 0, 1, 0 );
+
+		for ( let i = 0; i < bones.length; i ++ ) {
+
+			const bone = bones[ i ];
+
+			if ( bone.parent && bone.parent.isBone ) {
+
+				vertices.push( 0, 0, 0 );
+				vertices.push( 0, 0, 0 );
+				colors.push( color1.r, color1.g, color1.b );
+				colors.push( color2.r, color2.g, color2.b );
+
+			}
+
+		}
+
+		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
+
+		const material = new LineBasicMaterial( { vertexColors: true, depthTest: false, depthWrite: false, toneMapped: false, transparent: true } );
+
+		super( geometry, material );
+
+		this.isSkeletonHelper = true;
+
+		this.type = 'SkeletonHelper';
+
+		this.root = object;
+		this.bones = bones;
+
+		this.matrix = object.matrixWorld;
+		this.matrixAutoUpdate = false;
+
+	}
+
+	updateMatrixWorld( force ) {
+
+		const bones = this.bones;
+
+		const geometry = this.geometry;
+		const position = geometry.getAttribute( 'position' );
+
+		_matrixWorldInv.copy( this.root.matrixWorld ).invert();
+
+		for ( let i = 0, j = 0; i < bones.length; i ++ ) {
+
+			const bone = bones[ i ];
+
+			if ( bone.parent && bone.parent.isBone ) {
+
+				_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.matrixWorld );
+				_vector$2.setFromMatrixPosition( _boneMatrix );
+				position.setXYZ( j, _vector$2.x, _vector$2.y, _vector$2.z );
+
+				_boneMatrix.multiplyMatrices( _matrixWorldInv, bone.parent.matrixWorld );
+				_vector$2.setFromMatrixPosition( _boneMatrix );
+				position.setXYZ( j + 1, _vector$2.x, _vector$2.y, _vector$2.z );
+
+				j += 2;
+
+			}
+
+		}
+
+		geometry.getAttribute( 'position' ).needsUpdate = true;
+
+		super.updateMatrixWorld( force );
+
+	}
+
+	dispose() {
+
+		this.geometry.dispose();
+		this.material.dispose();
+
+	}
+
+}
+
+
+function getBoneList( object ) {
+
+	const boneList = [];
+
+	if ( object.isBone === true ) {
+
+		boneList.push( object );
+
+	}
+
+	for ( let i = 0; i < object.children.length; i ++ ) {
+
+		boneList.push.apply( boneList, getBoneList( object.children[ i ] ) );
+
+	}
+
+	return boneList;
+
+}
+
+class PointLightHelper extends Mesh {
+
+	constructor( light, sphereSize, color ) {
+
+		const geometry = new SphereGeometry( sphereSize, 4, 2 );
+		const material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );
+
+		super( geometry, material );
+
+		this.light = light;
+
+		this.color = color;
+
+		this.type = 'PointLightHelper';
+
+		this.matrix = this.light.matrixWorld;
+		this.matrixAutoUpdate = false;
+
+		this.update();
+
+
+		/*
+	// TODO: delete this comment?
+	const distanceGeometry = new THREE.IcosahedronGeometry( 1, 2 );
+	const distanceMaterial = new THREE.MeshBasicMaterial( { color: hexColor, fog: false, wireframe: true, opacity: 0.1, transparent: true } );
+
+	this.lightSphere = new THREE.Mesh( bulbGeometry, bulbMaterial );
+	this.lightDistance = new THREE.Mesh( distanceGeometry, distanceMaterial );
+
+	const d = light.distance;
+
+	if ( d === 0.0 ) {
+
+		this.lightDistance.visible = false;
+
+	} else {
+
+		this.lightDistance.scale.set( d, d, d );
+
+	}
+
+	this.add( this.lightDistance );
+	*/
+
+	}
+
+	dispose() {
+
+		this.geometry.dispose();
+		this.material.dispose();
+
+	}
+
+	update() {
+
+		this.light.updateWorldMatrix( true, false );
+
+		if ( this.color !== undefined ) {
+
+			this.material.color.set( this.color );
+
+		} else {
+
+			this.material.color.copy( this.light.color );
+
+		}
+
+		/*
+		const d = this.light.distance;
+
+		if ( d === 0.0 ) {
+
+			this.lightDistance.visible = false;
+
+		} else {
+
+			this.lightDistance.visible = true;
+			this.lightDistance.scale.set( d, d, d );
+
+		}
+		*/
+
+	}
+
+}
+
+const _vector$1 = /*@__PURE__*/ new Vector3();
+const _color1 = /*@__PURE__*/ new Color();
+const _color2 = /*@__PURE__*/ new Color();
+
+class HemisphereLightHelper extends Object3D {
+
+	constructor( light, size, color ) {
+
+		super();
+
+		this.light = light;
+
+		this.matrix = light.matrixWorld;
+		this.matrixAutoUpdate = false;
+
+		this.color = color;
+
+		this.type = 'HemisphereLightHelper';
+
+		const geometry = new OctahedronGeometry( size );
+		geometry.rotateY( Math.PI * 0.5 );
+
+		this.material = new MeshBasicMaterial( { wireframe: true, fog: false, toneMapped: false } );
+		if ( this.color === undefined ) this.material.vertexColors = true;
+
+		const position = geometry.getAttribute( 'position' );
+		const colors = new Float32Array( position.count * 3 );
+
+		geometry.setAttribute( 'color', new BufferAttribute( colors, 3 ) );
+
+		this.add( new Mesh( geometry, this.material ) );
+
+		this.update();
+
+	}
+
+	dispose() {
+
+		this.children[ 0 ].geometry.dispose();
+		this.children[ 0 ].material.dispose();
+
+	}
+
+	update() {
+
+		const mesh = this.children[ 0 ];
+
+		if ( this.color !== undefined ) {
+
+			this.material.color.set( this.color );
+
+		} else {
+
+			const colors = mesh.geometry.getAttribute( 'color' );
+
+			_color1.copy( this.light.color );
+			_color2.copy( this.light.groundColor );
+
+			for ( let i = 0, l = colors.count; i < l; i ++ ) {
+
+				const color = ( i < ( l / 2 ) ) ? _color1 : _color2;
+
+				colors.setXYZ( i, color.r, color.g, color.b );
+
+			}
+
+			colors.needsUpdate = true;
+
+		}
+
+		this.light.updateWorldMatrix( true, false );
+
+		mesh.lookAt( _vector$1.setFromMatrixPosition( this.light.matrixWorld ).negate() );
+
+	}
+
+}
+
+class GridHelper extends LineSegments {
+
+	constructor( size = 10, divisions = 10, color1 = 0x444444, color2 = 0x888888 ) {
+
+		color1 = new Color( color1 );
+		color2 = new Color( color2 );
+
+		const center = divisions / 2;
+		const step = size / divisions;
+		const halfSize = size / 2;
+
+		const vertices = [], colors = [];
+
+		for ( let i = 0, j = 0, k = - halfSize; i <= divisions; i ++, k += step ) {
+
+			vertices.push( - halfSize, 0, k, halfSize, 0, k );
+			vertices.push( k, 0, - halfSize, k, 0, halfSize );
+
+			const color = i === center ? color1 : color2;
+
+			color.toArray( colors, j ); j += 3;
+			color.toArray( colors, j ); j += 3;
+			color.toArray( colors, j ); j += 3;
+			color.toArray( colors, j ); j += 3;
+
+		}
+
+		const geometry = new BufferGeometry();
+		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
+
+		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );
+
+		super( geometry, material );
+
+		this.type = 'GridHelper';
+
+	}
+
+	dispose() {
+
+		this.geometry.dispose();
+		this.material.dispose();
+
+	}
+
+}
+
+class PolarGridHelper extends LineSegments {
+
+	constructor( radius = 10, sectors = 16, rings = 8, divisions = 64, color1 = 0x444444, color2 = 0x888888 ) {
+
+		color1 = new Color( color1 );
+		color2 = new Color( color2 );
+
+		const vertices = [];
+		const colors = [];
+
+		// create the sectors
+
+		if ( sectors > 1 ) {
+
+			for ( let i = 0; i < sectors; i ++ ) {
+
+				const v = ( i / sectors ) * ( Math.PI * 2 );
+
+				const x = Math.sin( v ) * radius;
+				const z = Math.cos( v ) * radius;
+
+				vertices.push( 0, 0, 0 );
+				vertices.push( x, 0, z );
+
+				const color = ( i & 1 ) ? color1 : color2;
+
+				colors.push( color.r, color.g, color.b );
+				colors.push( color.r, color.g, color.b );
+
+			}
+
+		}
+
+		// create the rings
+
+		for ( let i = 0; i < rings; i ++ ) {
+
+			const color = ( i & 1 ) ? color1 : color2;
+
+			const r = radius - ( radius / rings * i );
+
+			for ( let j = 0; j < divisions; j ++ ) {
+
+				// first vertex
+
+				let v = ( j / divisions ) * ( Math.PI * 2 );
+
+				let x = Math.sin( v ) * r;
+				let z = Math.cos( v ) * r;
+
+				vertices.push( x, 0, z );
+				colors.push( color.r, color.g, color.b );
+
+				// second vertex
+
+				v = ( ( j + 1 ) / divisions ) * ( Math.PI * 2 );
+
+				x = Math.sin( v ) * r;
+				z = Math.cos( v ) * r;
+
+				vertices.push( x, 0, z );
+				colors.push( color.r, color.g, color.b );
+
+			}
+
+		}
+
+		const geometry = new BufferGeometry();
+		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
+
+		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );
+
+		super( geometry, material );
+
+		this.type = 'PolarGridHelper';
+
+	}
+
+	dispose() {
+
+		this.geometry.dispose();
+		this.material.dispose();
+
+	}
+
+}
+
+const _v1 = /*@__PURE__*/ new Vector3();
+const _v2 = /*@__PURE__*/ new Vector3();
+const _v3 = /*@__PURE__*/ new Vector3();
+
+class DirectionalLightHelper extends Object3D {
+
+	constructor( light, size, color ) {
+
+		super();
+
+		this.light = light;
+
+		this.matrix = light.matrixWorld;
+		this.matrixAutoUpdate = false;
+
+		this.color = color;
+
+		this.type = 'DirectionalLightHelper';
+
+		if ( size === undefined ) size = 1;
+
+		let geometry = new BufferGeometry();
+		geometry.setAttribute( 'position', new Float32BufferAttribute( [
+			- size, size, 0,
+			size, size, 0,
+			size, - size, 0,
+			- size, - size, 0,
+			- size, size, 0
+		], 3 ) );
+
+		const material = new LineBasicMaterial( { fog: false, toneMapped: false } );
+
+		this.lightPlane = new Line( geometry, material );
+		this.add( this.lightPlane );
+
+		geometry = new BufferGeometry();
+		geometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 0, 1 ], 3 ) );
+
+		this.targetLine = new Line( geometry, material );
+		this.add( this.targetLine );
+
+		this.update();
+
+	}
+
+	dispose() {
+
+		this.lightPlane.geometry.dispose();
+		this.lightPlane.material.dispose();
+		this.targetLine.geometry.dispose();
+		this.targetLine.material.dispose();
+
+	}
+
+	update() {
+
+		this.light.updateWorldMatrix( true, false );
+		this.light.target.updateWorldMatrix( true, false );
+
+		_v1.setFromMatrixPosition( this.light.matrixWorld );
+		_v2.setFromMatrixPosition( this.light.target.matrixWorld );
+		_v3.subVectors( _v2, _v1 );
+
+		this.lightPlane.lookAt( _v2 );
+
+		if ( this.color !== undefined ) {
+
+			this.lightPlane.material.color.set( this.color );
+			this.targetLine.material.color.set( this.color );
+
+		} else {
+
+			this.lightPlane.material.color.copy( this.light.color );
+			this.targetLine.material.color.copy( this.light.color );
+
+		}
+
+		this.targetLine.lookAt( _v2 );
+		this.targetLine.scale.z = _v3.length();
+
+	}
+
+}
+
+const _vector = /*@__PURE__*/ new Vector3();
+const _camera = /*@__PURE__*/ new Camera();
+
+/**
+ *	- shows frustum, line of sight and up of the camera
+ *	- suitable for fast updates
+ * 	- based on frustum visualization in lightgl.js shadowmap example
+ *		https://github.com/evanw/lightgl.js/blob/master/tests/shadowmap.html
+ */
+
+class CameraHelper extends LineSegments {
+
+	constructor( camera ) {
+
+		const geometry = new BufferGeometry();
+		const material = new LineBasicMaterial( { color: 0xffffff, vertexColors: true, toneMapped: false } );
+
+		const vertices = [];
+		const colors = [];
+
+		const pointMap = {};
+
+		// near
+
+		addLine( 'n1', 'n2' );
+		addLine( 'n2', 'n4' );
+		addLine( 'n4', 'n3' );
+		addLine( 'n3', 'n1' );
+
+		// far
+
+		addLine( 'f1', 'f2' );
+		addLine( 'f2', 'f4' );
+		addLine( 'f4', 'f3' );
+		addLine( 'f3', 'f1' );
+
+		// sides
+
+		addLine( 'n1', 'f1' );
+		addLine( 'n2', 'f2' );
+		addLine( 'n3', 'f3' );
+		addLine( 'n4', 'f4' );
+
+		// cone
+
+		addLine( 'p', 'n1' );
+		addLine( 'p', 'n2' );
+		addLine( 'p', 'n3' );
+		addLine( 'p', 'n4' );
+
+		// up
+
+		addLine( 'u1', 'u2' );
+		addLine( 'u2', 'u3' );
+		addLine( 'u3', 'u1' );
+
+		// target
+
+		addLine( 'c', 't' );
+		addLine( 'p', 'c' );
+
+		// cross
+
+		addLine( 'cn1', 'cn2' );
+		addLine( 'cn3', 'cn4' );
+
+		addLine( 'cf1', 'cf2' );
+		addLine( 'cf3', 'cf4' );
+
+		function addLine( a, b ) {
+
+			addPoint( a );
+			addPoint( b );
+
+		}
+
+		function addPoint( id ) {
+
+			vertices.push( 0, 0, 0 );
+			colors.push( 0, 0, 0 );
+
+			if ( pointMap[ id ] === undefined ) {
+
+				pointMap[ id ] = [];
+
+			}
+
+			pointMap[ id ].push( ( vertices.length / 3 ) - 1 );
+
+		}
+
+		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
+
+		super( geometry, material );
+
+		this.type = 'CameraHelper';
+
+		this.camera = camera;
+		if ( this.camera.updateProjectionMatrix ) this.camera.updateProjectionMatrix();
+
+		this.matrix = camera.matrixWorld;
+		this.matrixAutoUpdate = false;
+
+		this.pointMap = pointMap;
+
+		this.update();
+
+		// colors
+
+		const colorFrustum = new Color( 0xffaa00 );
+		const colorCone = new Color( 0xff0000 );
+		const colorUp = new Color( 0x00aaff );
+		const colorTarget = new Color( 0xffffff );
+		const colorCross = new Color( 0x333333 );
+
+		this.setColors( colorFrustum, colorCone, colorUp, colorTarget, colorCross );
+
+	}
+
+	setColors( frustum, cone, up, target, cross ) {
+
+		const geometry = this.geometry;
+
+		const colorAttribute = geometry.getAttribute( 'color' );
+
+		// near
+
+		colorAttribute.setXYZ( 0, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 1, frustum.r, frustum.g, frustum.b ); // n1, n2
+		colorAttribute.setXYZ( 2, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 3, frustum.r, frustum.g, frustum.b ); // n2, n4
+		colorAttribute.setXYZ( 4, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 5, frustum.r, frustum.g, frustum.b ); // n4, n3
+		colorAttribute.setXYZ( 6, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 7, frustum.r, frustum.g, frustum.b ); // n3, n1
+
+		// far
+
+		colorAttribute.setXYZ( 8, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 9, frustum.r, frustum.g, frustum.b ); // f1, f2
+		colorAttribute.setXYZ( 10, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 11, frustum.r, frustum.g, frustum.b ); // f2, f4
+		colorAttribute.setXYZ( 12, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 13, frustum.r, frustum.g, frustum.b ); // f4, f3
+		colorAttribute.setXYZ( 14, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 15, frustum.r, frustum.g, frustum.b ); // f3, f1
+
+		// sides
+
+		colorAttribute.setXYZ( 16, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 17, frustum.r, frustum.g, frustum.b ); // n1, f1
+		colorAttribute.setXYZ( 18, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 19, frustum.r, frustum.g, frustum.b ); // n2, f2
+		colorAttribute.setXYZ( 20, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 21, frustum.r, frustum.g, frustum.b ); // n3, f3
+		colorAttribute.setXYZ( 22, frustum.r, frustum.g, frustum.b ); colorAttribute.setXYZ( 23, frustum.r, frustum.g, frustum.b ); // n4, f4
+
+		// cone
+
+		colorAttribute.setXYZ( 24, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 25, cone.r, cone.g, cone.b ); // p, n1
+		colorAttribute.setXYZ( 26, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 27, cone.r, cone.g, cone.b ); // p, n2
+		colorAttribute.setXYZ( 28, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 29, cone.r, cone.g, cone.b ); // p, n3
+		colorAttribute.setXYZ( 30, cone.r, cone.g, cone.b ); colorAttribute.setXYZ( 31, cone.r, cone.g, cone.b ); // p, n4
+
+		// up
+
+		colorAttribute.setXYZ( 32, up.r, up.g, up.b ); colorAttribute.setXYZ( 33, up.r, up.g, up.b ); // u1, u2
+		colorAttribute.setXYZ( 34, up.r, up.g, up.b ); colorAttribute.setXYZ( 35, up.r, up.g, up.b ); // u2, u3
+		colorAttribute.setXYZ( 36, up.r, up.g, up.b ); colorAttribute.setXYZ( 37, up.r, up.g, up.b ); // u3, u1
+
+		// target
+
+		colorAttribute.setXYZ( 38, target.r, target.g, target.b ); colorAttribute.setXYZ( 39, target.r, target.g, target.b ); // c, t
+		colorAttribute.setXYZ( 40, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 41, cross.r, cross.g, cross.b ); // p, c
+
+		// cross
+
+		colorAttribute.setXYZ( 42, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 43, cross.r, cross.g, cross.b ); // cn1, cn2
+		colorAttribute.setXYZ( 44, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 45, cross.r, cross.g, cross.b ); // cn3, cn4
+
+		colorAttribute.setXYZ( 46, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 47, cross.r, cross.g, cross.b ); // cf1, cf2
+		colorAttribute.setXYZ( 48, cross.r, cross.g, cross.b ); colorAttribute.setXYZ( 49, cross.r, cross.g, cross.b ); // cf3, cf4
+
+		colorAttribute.needsUpdate = true;
+
+	}
+
+	update() {
+
+		const geometry = this.geometry;
+		const pointMap = this.pointMap;
+
+		const w = 1, h = 1;
+
+		// we need just camera projection matrix inverse
+		// world matrix must be identity
+
+		_camera.projectionMatrixInverse.copy( this.camera.projectionMatrixInverse );
+
+		// center / target
+
+		setPoint( 'c', pointMap, geometry, _camera, 0, 0, - 1 );
+		setPoint( 't', pointMap, geometry, _camera, 0, 0, 1 );
+
+		// near
+
+		setPoint( 'n1', pointMap, geometry, _camera, - w, - h, - 1 );
+		setPoint( 'n2', pointMap, geometry, _camera, w, - h, - 1 );
+		setPoint( 'n3', pointMap, geometry, _camera, - w, h, - 1 );
+		setPoint( 'n4', pointMap, geometry, _camera, w, h, - 1 );
+
+		// far
+
+		setPoint( 'f1', pointMap, geometry, _camera, - w, - h, 1 );
+		setPoint( 'f2', pointMap, geometry, _camera, w, - h, 1 );
+		setPoint( 'f3', pointMap, geometry, _camera, - w, h, 1 );
+		setPoint( 'f4', pointMap, geometry, _camera, w, h, 1 );
+
+		// up
+
+		setPoint( 'u1', pointMap, geometry, _camera, w * 0.7, h * 1.1, - 1 );
+		setPoint( 'u2', pointMap, geometry, _camera, - w * 0.7, h * 1.1, - 1 );
+		setPoint( 'u3', pointMap, geometry, _camera, 0, h * 2, - 1 );
+
+		// cross
+
+		setPoint( 'cf1', pointMap, geometry, _camera, - w, 0, 1 );
+		setPoint( 'cf2', pointMap, geometry, _camera, w, 0, 1 );
+		setPoint( 'cf3', pointMap, geometry, _camera, 0, - h, 1 );
+		setPoint( 'cf4', pointMap, geometry, _camera, 0, h, 1 );
+
+		setPoint( 'cn1', pointMap, geometry, _camera, - w, 0, - 1 );
+		setPoint( 'cn2', pointMap, geometry, _camera, w, 0, - 1 );
+		setPoint( 'cn3', pointMap, geometry, _camera, 0, - h, - 1 );
+		setPoint( 'cn4', pointMap, geometry, _camera, 0, h, - 1 );
+
+		geometry.getAttribute( 'position' ).needsUpdate = true;
+
+	}
+
+	dispose() {
+
+		this.geometry.dispose();
+		this.material.dispose();
+
+	}
+
+}
+
+
+function setPoint( point, pointMap, geometry, camera, x, y, z ) {
+
+	_vector.set( x, y, z ).unproject( camera );
+
+	const points = pointMap[ point ];
+
+	if ( points !== undefined ) {
+
+		const position = geometry.getAttribute( 'position' );
+
+		for ( let i = 0, l = points.length; i < l; i ++ ) {
+
+			position.setXYZ( points[ i ], _vector.x, _vector.y, _vector.z );
+
+		}
+
+	}
+
+}
+
+const _box = /*@__PURE__*/ new Box3();
+
+class BoxHelper extends LineSegments {
+
+	constructor( object, color = 0xffff00 ) {
+
+		const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
+		const positions = new Float32Array( 8 * 3 );
+
+		const geometry = new BufferGeometry();
+		geometry.setIndex( new BufferAttribute( indices, 1 ) );
+		geometry.setAttribute( 'position', new BufferAttribute( positions, 3 ) );
+
+		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
+
+		this.object = object;
+		this.type = 'BoxHelper';
+
+		this.matrixAutoUpdate = false;
+
+		this.update();
+
+	}
+
+	update( object ) {
+
+		if ( object !== undefined ) {
+
+			console.warn( 'THREE.BoxHelper: .update() has no longer arguments.' );
+
+		}
+
+		if ( this.object !== undefined ) {
+
+			_box.setFromObject( this.object );
+
+		}
+
+		if ( _box.isEmpty() ) return;
+
+		const min = _box.min;
+		const max = _box.max;
+
+		/*
+			5____4
+		1/___0/|
+		| 6__|_7
+		2/___3/
+
+		0: max.x, max.y, max.z
+		1: min.x, max.y, max.z
+		2: min.x, min.y, max.z
+		3: max.x, min.y, max.z
+		4: max.x, max.y, min.z
+		5: min.x, max.y, min.z
+		6: min.x, min.y, min.z
+		7: max.x, min.y, min.z
+		*/
+
+		const position = this.geometry.attributes.position;
+		const array = position.array;
+
+		array[ 0 ] = max.x; array[ 1 ] = max.y; array[ 2 ] = max.z;
+		array[ 3 ] = min.x; array[ 4 ] = max.y; array[ 5 ] = max.z;
+		array[ 6 ] = min.x; array[ 7 ] = min.y; array[ 8 ] = max.z;
+		array[ 9 ] = max.x; array[ 10 ] = min.y; array[ 11 ] = max.z;
+		array[ 12 ] = max.x; array[ 13 ] = max.y; array[ 14 ] = min.z;
+		array[ 15 ] = min.x; array[ 16 ] = max.y; array[ 17 ] = min.z;
+		array[ 18 ] = min.x; array[ 19 ] = min.y; array[ 20 ] = min.z;
+		array[ 21 ] = max.x; array[ 22 ] = min.y; array[ 23 ] = min.z;
+
+		position.needsUpdate = true;
+
+		this.geometry.computeBoundingSphere();
+
+	}
+
+	setFromObject( object ) {
+
+		this.object = object;
+		this.update();
+
+		return this;
+
+	}
+
+	copy( source, recursive ) {
+
+		super.copy( source, recursive );
+
+		this.object = source.object;
+
+		return this;
+
+	}
+
+	dispose() {
+
+		this.geometry.dispose();
+		this.material.dispose();
+
+	}
+
+}
+
+class Box3Helper extends LineSegments {
+
+	constructor( box, color = 0xffff00 ) {
+
+		const indices = new Uint16Array( [ 0, 1, 1, 2, 2, 3, 3, 0, 4, 5, 5, 6, 6, 7, 7, 4, 0, 4, 1, 5, 2, 6, 3, 7 ] );
+
+		const positions = [ 1, 1, 1, - 1, 1, 1, - 1, - 1, 1, 1, - 1, 1, 1, 1, - 1, - 1, 1, - 1, - 1, - 1, - 1, 1, - 1, - 1 ];
+
+		const geometry = new BufferGeometry();
+
+		geometry.setIndex( new BufferAttribute( indices, 1 ) );
+
+		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
+
+		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
+
+		this.box = box;
+
+		this.type = 'Box3Helper';
+
+		this.geometry.computeBoundingSphere();
+
+	}
+
+	updateMatrixWorld( force ) {
+
+		const box = this.box;
+
+		if ( box.isEmpty() ) return;
+
+		box.getCenter( this.position );
+
+		box.getSize( this.scale );
+
+		this.scale.multiplyScalar( 0.5 );
+
+		super.updateMatrixWorld( force );
+
+	}
+
+	dispose() {
+
+		this.geometry.dispose();
+		this.material.dispose();
+
+	}
+
+}
+
+class PlaneHelper extends Line {
+
+	constructor( plane, size = 1, hex = 0xffff00 ) {
+
+		const color = hex;
+
+		const positions = [ 1, - 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, - 1, 0, 1, 1, 0 ];
+
+		const geometry = new BufferGeometry();
+		geometry.setAttribute( 'position', new Float32BufferAttribute( positions, 3 ) );
+		geometry.computeBoundingSphere();
+
+		super( geometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
+
+		this.type = 'PlaneHelper';
+
+		this.plane = plane;
+
+		this.size = size;
+
+		const positions2 = [ 1, 1, 0, - 1, 1, 0, - 1, - 1, 0, 1, 1, 0, - 1, - 1, 0, 1, - 1, 0 ];
+
+		const geometry2 = new BufferGeometry();
+		geometry2.setAttribute( 'position', new Float32BufferAttribute( positions2, 3 ) );
+		geometry2.computeBoundingSphere();
+
+		this.add( new Mesh( geometry2, new MeshBasicMaterial( { color: color, opacity: 0.2, transparent: true, depthWrite: false, toneMapped: false } ) ) );
+
+	}
+
+	updateMatrixWorld( force ) {
+
+		this.position.set( 0, 0, 0 );
+
+		this.scale.set( 0.5 * this.size, 0.5 * this.size, 1 );
+
+		this.lookAt( this.plane.normal );
+
+		this.translateZ( - this.plane.constant );
+
+		super.updateMatrixWorld( force );
+
+	}
+
+	dispose() {
+
+		this.geometry.dispose();
+		this.material.dispose();
+		this.children[ 0 ].geometry.dispose();
+		this.children[ 0 ].material.dispose();
+
+	}
+
+}
+
+const _axis = /*@__PURE__*/ new Vector3();
+let _lineGeometry, _coneGeometry;
+
+class ArrowHelper extends Object3D {
+
+	// dir is assumed to be normalized
+
+	constructor( dir = new Vector3( 0, 0, 1 ), origin = new Vector3( 0, 0, 0 ), length = 1, color = 0xffff00, headLength = length * 0.2, headWidth = headLength * 0.2 ) {
+
+		super();
+
+		this.type = 'ArrowHelper';
+
+		if ( _lineGeometry === undefined ) {
+
+			_lineGeometry = new BufferGeometry();
+			_lineGeometry.setAttribute( 'position', new Float32BufferAttribute( [ 0, 0, 0, 0, 1, 0 ], 3 ) );
+
+			_coneGeometry = new CylinderGeometry( 0, 0.5, 1, 5, 1 );
+			_coneGeometry.translate( 0, - 0.5, 0 );
+
+		}
+
+		this.position.copy( origin );
+
+		this.line = new Line( _lineGeometry, new LineBasicMaterial( { color: color, toneMapped: false } ) );
+		this.line.matrixAutoUpdate = false;
+		this.add( this.line );
+
+		this.cone = new Mesh( _coneGeometry, new MeshBasicMaterial( { color: color, toneMapped: false } ) );
+		this.cone.matrixAutoUpdate = false;
+		this.add( this.cone );
+
+		this.setDirection( dir );
+		this.setLength( length, headLength, headWidth );
+
+	}
+
+	setDirection( dir ) {
+
+		// dir is assumed to be normalized
+
+		if ( dir.y > 0.99999 ) {
+
+			this.quaternion.set( 0, 0, 0, 1 );
+
+		} else if ( dir.y < - 0.99999 ) {
+
+			this.quaternion.set( 1, 0, 0, 0 );
+
+		} else {
+
+			_axis.set( dir.z, 0, - dir.x ).normalize();
+
+			const radians = Math.acos( dir.y );
+
+			this.quaternion.setFromAxisAngle( _axis, radians );
+
+		}
+
+	}
+
+	setLength( length, headLength = length * 0.2, headWidth = headLength * 0.2 ) {
+
+		this.line.scale.set( 1, Math.max( 0.0001, length - headLength ), 1 ); // see #17458
+		this.line.updateMatrix();
+
+		this.cone.scale.set( headWidth, headLength, headWidth );
+		this.cone.position.y = length;
+		this.cone.updateMatrix();
+
+	}
+
+	setColor( color ) {
+
+		this.line.material.color.set( color );
+		this.cone.material.color.set( color );
+
+	}
+
+	copy( source ) {
+
+		super.copy( source, false );
+
+		this.line.copy( source.line );
+		this.cone.copy( source.cone );
+
+		return this;
+
+	}
+
+	dispose() {
+
+		this.line.geometry.dispose();
+		this.line.material.dispose();
+		this.cone.geometry.dispose();
+		this.cone.material.dispose();
+
+	}
+
+}
+
+class AxesHelper extends LineSegments {
+
+	constructor( size = 1 ) {
+
+		const vertices = [
+			0, 0, 0,	size, 0, 0,
+			0, 0, 0,	0, size, 0,
+			0, 0, 0,	0, 0, size
+		];
+
+		const colors = [
+			1, 0, 0,	1, 0.6, 0,
+			0, 1, 0,	0.6, 1, 0,
+			0, 0, 1,	0, 0.6, 1
+		];
+
+		const geometry = new BufferGeometry();
+		geometry.setAttribute( 'position', new Float32BufferAttribute( vertices, 3 ) );
+		geometry.setAttribute( 'color', new Float32BufferAttribute( colors, 3 ) );
+
+		const material = new LineBasicMaterial( { vertexColors: true, toneMapped: false } );
+
+		super( geometry, material );
+
+		this.type = 'AxesHelper';
+
+	}
+
+	setColors( xAxisColor, yAxisColor, zAxisColor ) {
+
+		const color = new Color();
+		const array = this.geometry.attributes.color.array;
+
+		color.set( xAxisColor );
+		color.toArray( array, 0 );
+		color.toArray( array, 3 );
+
+		color.set( yAxisColor );
+		color.toArray( array, 6 );
+		color.toArray( array, 9 );
+
+		color.set( zAxisColor );
+		color.toArray( array, 12 );
+		color.toArray( array, 15 );
+
+		this.geometry.attributes.color.needsUpdate = true;
+
+		return this;
+
+	}
+
+	dispose() {
+
+		this.geometry.dispose();
+		this.material.dispose();
+
+	}
+
+}
+
+class ShapePath {
+
+	constructor() {
+
+		this.type = 'ShapePath';
+
+		this.color = new Color();
+
+		this.subPaths = [];
+		this.currentPath = null;
+
+	}
+
+	moveTo( x, y ) {
+
+		this.currentPath = new Path();
+		this.subPaths.push( this.currentPath );
+		this.currentPath.moveTo( x, y );
+
+		return this;
+
+	}
+
+	lineTo( x, y ) {
+
+		this.currentPath.lineTo( x, y );
+
+		return this;
+
+	}
+
+	quadraticCurveTo( aCPx, aCPy, aX, aY ) {
+
+		this.currentPath.quadraticCurveTo( aCPx, aCPy, aX, aY );
+
+		return this;
+
+	}
+
+	bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY ) {
+
+		this.currentPath.bezierCurveTo( aCP1x, aCP1y, aCP2x, aCP2y, aX, aY );
+
+		return this;
+
+	}
+
+	splineThru( pts ) {
+
+		this.currentPath.splineThru( pts );
+
+		return this;
+
+	}
+
+	toShapes( isCCW ) {
+
+		function toShapesNoHoles( inSubpaths ) {
+
+			const shapes = [];
+
+			for ( let i = 0, l = inSubpaths.length; i < l; i ++ ) {
+
+				const tmpPath = inSubpaths[ i ];
+
+				const tmpShape = new Shape();
+				tmpShape.curves = tmpPath.curves;
+
+				shapes.push( tmpShape );
+
+			}
+
+			return shapes;
+
+		}
+
+		function isPointInsidePolygon( inPt, inPolygon ) {
+
+			const polyLen = inPolygon.length;
+
+			// inPt on polygon contour => immediate success    or
+			// toggling of inside/outside at every single! intersection point of an edge
+			//  with the horizontal line through inPt, left of inPt
+			//  not counting lowerY endpoints of edges and whole edges on that line
+			let inside = false;
+			for ( let p = polyLen - 1, q = 0; q < polyLen; p = q ++ ) {
+
+				let edgeLowPt = inPolygon[ p ];
+				let edgeHighPt = inPolygon[ q ];
+
+				let edgeDx = edgeHighPt.x - edgeLowPt.x;
+				let edgeDy = edgeHighPt.y - edgeLowPt.y;
+
+				if ( Math.abs( edgeDy ) > Number.EPSILON ) {
+
+					// not parallel
+					if ( edgeDy < 0 ) {
+
+						edgeLowPt = inPolygon[ q ]; edgeDx = - edgeDx;
+						edgeHighPt = inPolygon[ p ]; edgeDy = - edgeDy;
+
+					}
+
+					if ( ( inPt.y < edgeLowPt.y ) || ( inPt.y > edgeHighPt.y ) ) 		continue;
+
+					if ( inPt.y === edgeLowPt.y ) {
+
+						if ( inPt.x === edgeLowPt.x )		return	true;		// inPt is on contour ?
+						// continue;				// no intersection or edgeLowPt => doesn't count !!!
+
+					} else {
+
+						const perpEdge = edgeDy * ( inPt.x - edgeLowPt.x ) - edgeDx * ( inPt.y - edgeLowPt.y );
+						if ( perpEdge === 0 )				return	true;		// inPt is on contour ?
+						if ( perpEdge < 0 ) 				continue;
+						inside = ! inside;		// true intersection left of inPt
+
+					}
+
+				} else {
+
+					// parallel or collinear
+					if ( inPt.y !== edgeLowPt.y ) 		continue;			// parallel
+					// edge lies on the same horizontal line as inPt
+					if ( ( ( edgeHighPt.x <= inPt.x ) && ( inPt.x <= edgeLowPt.x ) ) ||
+						 ( ( edgeLowPt.x <= inPt.x ) && ( inPt.x <= edgeHighPt.x ) ) )		return	true;	// inPt: Point on contour !
+					// continue;
+
+				}
+
+			}
+
+			return	inside;
+
+		}
+
+		const isClockWise = ShapeUtils.isClockWise;
+
+		const subPaths = this.subPaths;
+		if ( subPaths.length === 0 ) return [];
+
+		let solid, tmpPath, tmpShape;
+		const shapes = [];
+
+		if ( subPaths.length === 1 ) {
+
+			tmpPath = subPaths[ 0 ];
+			tmpShape = new Shape();
+			tmpShape.curves = tmpPath.curves;
+			shapes.push( tmpShape );
+			return shapes;
+
+		}
+
+		let holesFirst = ! isClockWise( subPaths[ 0 ].getPoints() );
+		holesFirst = isCCW ? ! holesFirst : holesFirst;
+
+		// console.log("Holes first", holesFirst);
+
+		const betterShapeHoles = [];
+		const newShapes = [];
+		let newShapeHoles = [];
+		let mainIdx = 0;
+		let tmpPoints;
+
+		newShapes[ mainIdx ] = undefined;
+		newShapeHoles[ mainIdx ] = [];
+
+		for ( let i = 0, l = subPaths.length; i < l; i ++ ) {
+
+			tmpPath = subPaths[ i ];
+			tmpPoints = tmpPath.getPoints();
+			solid = isClockWise( tmpPoints );
+			solid = isCCW ? ! solid : solid;
+
+			if ( solid ) {
+
+				if ( ( ! holesFirst ) && ( newShapes[ mainIdx ] ) )	mainIdx ++;
+
+				newShapes[ mainIdx ] = { s: new Shape(), p: tmpPoints };
+				newShapes[ mainIdx ].s.curves = tmpPath.curves;
+
+				if ( holesFirst )	mainIdx ++;
+				newShapeHoles[ mainIdx ] = [];
+
+				//console.log('cw', i);
+
+			} else {
+
+				newShapeHoles[ mainIdx ].push( { h: tmpPath, p: tmpPoints[ 0 ] } );
+
+				//console.log('ccw', i);
+
+			}
+
+		}
+
+		// only Holes? -> probably all Shapes with wrong orientation
+		if ( ! newShapes[ 0 ] )	return	toShapesNoHoles( subPaths );
+
+
+		if ( newShapes.length > 1 ) {
+
+			let ambiguous = false;
+			let toChange = 0;
+
+			for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {
+
+				betterShapeHoles[ sIdx ] = [];
+
+			}
+
+			for ( let sIdx = 0, sLen = newShapes.length; sIdx < sLen; sIdx ++ ) {
+
+				const sho = newShapeHoles[ sIdx ];
+
+				for ( let hIdx = 0; hIdx < sho.length; hIdx ++ ) {
+
+					const ho = sho[ hIdx ];
+					let hole_unassigned = true;
+
+					for ( let s2Idx = 0; s2Idx < newShapes.length; s2Idx ++ ) {
+
+						if ( isPointInsidePolygon( ho.p, newShapes[ s2Idx ].p ) ) {
+
+							if ( sIdx !== s2Idx )	toChange ++;
+
+							if ( hole_unassigned ) {
+
+								hole_unassigned = false;
+								betterShapeHoles[ s2Idx ].push( ho );
+
+							} else {
+
+								ambiguous = true;
+
+							}
+
+						}
+
+					}
+
+					if ( hole_unassigned ) {
+
+						betterShapeHoles[ sIdx ].push( ho );
+
+					}
+
+				}
+
+			}
+
+			if ( toChange > 0 && ambiguous === false ) {
+
+				newShapeHoles = betterShapeHoles;
+
+			}
+
+		}
+
+		let tmpHoles;
+
+		for ( let i = 0, il = newShapes.length; i < il; i ++ ) {
+
+			tmpShape = newShapes[ i ].s;
+			shapes.push( tmpShape );
+			tmpHoles = newShapeHoles[ i ];
+
+			for ( let j = 0, jl = tmpHoles.length; j < jl; j ++ ) {
+
+				tmpShape.holes.push( tmpHoles[ j ].h );
+
+			}
+
+		}
+
+		//console.log("shape", shapes);
+
+		return shapes;
+
+	}
+
+}
+
+class Controls extends EventDispatcher {
+
+	constructor( object, domElement ) {
+
+		super();
+
+		this.object = object;
+		this.domElement = domElement;
+
+		this.enabled = true;
+
+		this.state = - 1;
+
+		this.keys = {};
+		this.mouseButtons = { LEFT: null, MIDDLE: null, RIGHT: null };
+		this.touches = { ONE: null, TWO: null };
+
+	}
+
+	connect() {}
+
+	disconnect() {}
+
+	dispose() {}
+
+	update( /* delta */ ) {}
+
+}
+
+class WebGLMultipleRenderTargets extends WebGLRenderTarget { // @deprecated, r162
+
+	constructor( width = 1, height = 1, count = 1, options = {} ) {
+
+		console.warn( 'THREE.WebGLMultipleRenderTargets has been deprecated and will be removed in r172. Use THREE.WebGLRenderTarget and set the "count" parameter to enable MRT.' );
+
+		super( width, height, { ...options, count } );
+
+		this.isWebGLMultipleRenderTargets = true;
+
+	}
+
+	get texture() {
+
+		return this.textures;
+
+	}
+
+}
+
+if ( typeof __THREE_DEVTOOLS__ !== 'undefined' ) {
+
+	__THREE_DEVTOOLS__.dispatchEvent( new CustomEvent( 'register', { detail: {
+		revision: REVISION,
+	} } ) );
+
+}
+
+if ( typeof window !== 'undefined' ) {
+
+	if ( window.__THREE__ ) {
+
+		console.warn( 'WARNING: Multiple instances of Three.js being imported.' );
+
+	} else {
+
+		window.__THREE__ = REVISION;
+
+	}
+
+}
+
+export { ACESFilmicToneMapping, AddEquation, AddOperation, AdditiveAnimationBlendMode, AdditiveBlending, AgXToneMapping, AlphaFormat, AlwaysCompare, AlwaysDepth, AlwaysStencilFunc, AmbientLight, AnimationAction, AnimationClip, AnimationLoader, AnimationMixer, AnimationObjectGroup, AnimationUtils, ArcCurve, ArrayCamera, ArrowHelper, AttachedBindMode, Audio, AudioAnalyser, AudioContext, AudioListener, AudioLoader, AxesHelper, BackSide, BasicDepthPacking, BasicShadowMap, BatchedMesh, Bone, BooleanKeyframeTrack, Box2, Box3, Box3Helper, BoxGeometry, BoxHelper, BufferAttribute, BufferGeometry, BufferGeometryLoader, ByteType, Cache, Camera, CameraHelper, CanvasTexture, CapsuleGeometry, CatmullRomCurve3, CineonToneMapping, CircleGeometry, ClampToEdgeWrapping, Clock, Color, ColorKeyframeTrack, ColorManagement, CompressedArrayTexture, CompressedCubeTexture, CompressedTexture, CompressedTextureLoader, ConeGeometry, ConstantAlphaFactor, ConstantColorFactor, Controls, CubeCamera, CubeReflectionMapping, CubeRefractionMapping, CubeTexture, CubeTextureLoader, CubeUVReflectionMapping, CubicBezierCurve, CubicBezierCurve3, CubicInterpolant, CullFaceBack, CullFaceFront, CullFaceFrontBack, CullFaceNone, Curve, CurvePath, CustomBlending, CustomToneMapping, CylinderGeometry, Cylindrical, Data3DTexture, DataArrayTexture, DataTexture, DataTextureLoader, DataUtils, DecrementStencilOp, DecrementWrapStencilOp, DefaultLoadingManager, DepthFormat, DepthStencilFormat, DepthTexture, DetachedBindMode, DirectionalLight, DirectionalLightHelper, DiscreteInterpolant, DisplayP3ColorSpace, DodecahedronGeometry, DoubleSide, DstAlphaFactor, DstColorFactor, DynamicCopyUsage, DynamicDrawUsage, DynamicReadUsage, EdgesGeometry, EllipseCurve, EqualCompare, EqualDepth, EqualStencilFunc, EquirectangularReflectionMapping, EquirectangularRefractionMapping, Euler, EventDispatcher, ExtrudeGeometry, FileLoader, Float16BufferAttribute, Float32BufferAttribute, FloatType, Fog, FogExp2, FramebufferTexture, FrontSide, Frustum, GLBufferAttribute, GLSL1, GLSL3, GreaterCompare, GreaterDepth, GreaterEqualCompare, GreaterEqualDepth, GreaterEqualStencilFunc, GreaterStencilFunc, GridHelper, Group, HalfFloatType, HemisphereLight, HemisphereLightHelper, IcosahedronGeometry, ImageBitmapLoader, ImageLoader, ImageUtils, IncrementStencilOp, IncrementWrapStencilOp, InstancedBufferAttribute, InstancedBufferGeometry, InstancedInterleavedBuffer, InstancedMesh, Int16BufferAttribute, Int32BufferAttribute, Int8BufferAttribute, IntType, InterleavedBuffer, InterleavedBufferAttribute, Interpolant, InterpolateDiscrete, InterpolateLinear, InterpolateSmooth, InvertStencilOp, KeepStencilOp, KeyframeTrack, LOD, LatheGeometry, Layers, LessCompare, LessDepth, LessEqualCompare, LessEqualDepth, LessEqualStencilFunc, LessStencilFunc, Light, LightProbe, Line, Line3, LineBasicMaterial, LineCurve, LineCurve3, LineDashedMaterial, LineLoop, LineSegments, LinearDisplayP3ColorSpace, LinearFilter, LinearInterpolant, LinearMipMapLinearFilter, LinearMipMapNearestFilter, LinearMipmapLinearFilter, LinearMipmapNearestFilter, LinearSRGBColorSpace, LinearToneMapping, LinearTransfer, Loader, LoaderUtils, LoadingManager, LoopOnce, LoopPingPong, LoopRepeat, LuminanceAlphaFormat, LuminanceFormat, MOUSE, Material, MaterialLoader, MathUtils, Matrix2, Matrix3, Matrix4, MaxEquation, Mesh, MeshBasicMaterial, MeshDepthMaterial, MeshDistanceMaterial, MeshLambertMaterial, MeshMatcapMaterial, MeshNormalMaterial, MeshPhongMaterial, MeshPhysicalMaterial, MeshStandardMaterial, MeshToonMaterial, MinEquation, MirroredRepeatWrapping, MixOperation, MultiplyBlending, MultiplyOperation, NearestFilter, NearestMipMapLinearFilter, NearestMipMapNearestFilter, NearestMipmapLinearFilter, NearestMipmapNearestFilter, NeutralToneMapping, NeverCompare, NeverDepth, NeverStencilFunc, NoBlending, NoColorSpace, NoToneMapping, NormalAnimationBlendMode, NormalBlending, NotEqualCompare, NotEqualDepth, NotEqualStencilFunc, NumberKeyframeTrack, Object3D, ObjectLoader, ObjectSpaceNormalMap, OctahedronGeometry, OneFactor, OneMinusConstantAlphaFactor, OneMinusConstantColorFactor, OneMinusDstAlphaFactor, OneMinusDstColorFactor, OneMinusSrcAlphaFactor, OneMinusSrcColorFactor, OrthographicCamera, P3Primaries, PCFShadowMap, PCFSoftShadowMap, PMREMGenerator, Path, PerspectiveCamera, Plane, PlaneGeometry, PlaneHelper, PointLight, PointLightHelper, Points, PointsMaterial, PolarGridHelper, PolyhedronGeometry, PositionalAudio, PropertyBinding, PropertyMixer, QuadraticBezierCurve, QuadraticBezierCurve3, Quaternion, QuaternionKeyframeTrack, QuaternionLinearInterpolant, RED_GREEN_RGTC2_Format, RED_RGTC1_Format, REVISION, RGBADepthPacking, RGBAFormat, RGBAIntegerFormat, RGBA_ASTC_10x10_Format, RGBA_ASTC_10x5_Format, RGBA_ASTC_10x6_Format, RGBA_ASTC_10x8_Format, RGBA_ASTC_12x10_Format, RGBA_ASTC_12x12_Format, RGBA_ASTC_4x4_Format, RGBA_ASTC_5x4_Format, RGBA_ASTC_5x5_Format, RGBA_ASTC_6x5_Format, RGBA_ASTC_6x6_Format, 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diff --git a/web/vendor/vue/vue.global.prod.js b/web/vendor/vue/vue.global.prod.js
new file mode 100644
index 0000000..b2cd5c3
--- /dev/null
+++ b/web/vendor/vue/vue.global.prod.js
@@ -0,0 +1,9 @@
+/**
+* vue v3.5.13
+* (c) 2018-present Yuxi (Evan) You and Vue contributors
+* @license MIT
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diff --git a/web/vendor/vuetify/vuetify.min.css b/web/vendor/vuetify/vuetify.min.css
new file mode 100644
index 0000000..29d6b36
--- /dev/null
+++ b/web/vendor/vuetify/vuetify.min.css
@@ -0,0 +1,12 @@
+/*!
+* Vuetify v3.7.7
+* Forged by John Leider
+* Released under the MIT License.
+*/
+@keyframes 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+
+/*!
+ * ress.css • v2.0.4
+ * MIT License
+ * github.com/filipelinhares/ress
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new file mode 100644
index 0000000..4000d96
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+return Nt({VBtn:{variant:"text"}}),$t((()=>{const a=!(!e.title&&!l.title),m=!(!l.image&&!e.image),g=l.extension?.()
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+function Cl(){const e=t.shallowRef(!1)
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+let o=0,n=0
+const r=t.ref(null),i=t.shallowRef(0),s=t.shallowRef(0),u=t.shallowRef(0),c=t.shallowRef(!1),d=t.shallowRef(!1),v=t.computed((()=>Number(e.scrollThreshold))),p=t.computed((()=>R((v.value-i.value)/v.value||0))),f=()=>{const e=r.value
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+return $t((()=>{const a=xl.filterProps(e)
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+function Ll(e,a){let l=!(arguments.length>2&&void 0!==arguments[2])||arguments[2]
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+const n=St()
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+const r=t.inject(a,null)
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+function ql(e){let t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:bt()
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+const n=t.ref(),{themeClasses:r}=ka(e),{iconData:i}=(e=>{const a=t.inject(Ot)
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+return{iconData:t.computed((()=>{const l=t.unref(e)
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+return $t((()=>{const a=x(Qo.filterProps(e),["modelValue"])
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+return $t((()=>{const[a,u]=B(l),d=pn.filterProps(e),v=en.filterProps(e)
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+return t.provide(Qn,f),f.root},ar=(e,a)=>{const l=t.inject(Qn,Jn),o=Symbol(St()),n=t.computed((()=>void 0!==e.value?e.value:o)),r={...l,id:n,open:(e,t)=>l.root.open(n.value,e,t),openOnSelect:(e,t)=>l.root.openOnSelect(n.value,e,t),isOpen:t.computed((()=>l.root.opened.value.has(n.value))),parent:t.computed((()=>l.root.parents.value.get(n.value))),activate:(e,t)=>l.root.activate(n.value,e,t),isActivated:t.computed((()=>l.root.activated.value.has(t.toRaw(n.value)))),select:(e,t)=>l.root.select(n.value,e,t),isSelected:t.computed((()=>"on"===l.root.selected.value.get(t.toRaw(n.value)))),isIndeterminate:t.computed((()=>"indeterminate"===l.root.selected.value.get(t.toRaw(n.value)))),isLeaf:t.computed((()=>!l.root.children.value.get(n.value))),isGroupActivator:l.isGroupActivator}
+return t.onBeforeMount((()=>{!l.isGroupActivator&&l.root.register(n.value,l.id.value,a)})),t.onBeforeUnmount((()=>{!l.isGroupActivator&&l.root.unregister(n.value)})),a&&t.provide(Qn,r),r},lr=_t({name:"VListGroupActivator",setup(e,a){let{slots:l}=a
+return(()=>{const e=t.inject(Qn,Jn)
+t.provide(Qn,{...e,isGroupActivator:!0})})(),()=>l.default?.()}}),or=gt({activeColor:String,baseColor:String,color:String,collapseIcon:{type:Mt,default:"$collapse"},expandIcon:{type:Mt,default:"$expand"},prependIcon:Mt,appendIcon:Mt,fluid:Boolean,subgroup:Boolean,title:String,value:null,...ht(),...Pa()},"VListGroup"),nr=It()({name:"VListGroup",props:or(),setup(e,a){let{slots:l}=a
+const{isOpen:o,open:n,id:r}=ar(t.toRef(e,"value"),!0),i=t.computed((()=>`v-list-group--id-${String(r.value)}`)),s=Wn(),{isBooted:u}=Cl()
+function c(e){e.stopPropagation(),n(!o.value,e)}const d=t.computed((()=>({onClick:c,class:"v-list-group__header",id:i.value}))),v=t.computed((()=>o.value?e.collapseIcon:e.expandIcon)),p=t.computed((()=>({VListItem:{active:o.value,activeColor:e.activeColor,baseColor:e.baseColor,color:e.color,prependIcon:e.prependIcon||e.subgroup&&v.value,appendIcon:e.appendIcon||!e.subgroup&&v.value,title:e.title,value:e.value}})))
+return $t((()=>t.createVNode(e.tag,{class:["v-list-group",{"v-list-group--prepend":s?.hasPrepend.value,"v-list-group--fluid":e.fluid,"v-list-group--subgroup":e.subgroup,"v-list-group--open":o.value},e.class],style:e.style},{default:()=>[l.activator&&t.createVNode(al,{defaults:p.value},{default:()=>[t.createVNode(lr,null,{default:()=>[l.activator({props:d.value,isOpen:o.value})]})]}),t.createVNode(pl,{transition:{component:Ja},disabled:!u.value},{default:()=>[t.withDirectives(t.createVNode("div",{class:"v-list-group__items",role:"group","aria-labelledby":i.value},[l.default?.()]),[[t.vShow,o.value]])]})]}))),{isOpen:o}}}),rr=gt({opacity:[Number,String],...ht(),...Pa()},"VListItemSubtitle"),ir=It()({name:"VListItemSubtitle",props:rr(),setup(e,a){let{slots:l}=a
+return $t((()=>t.createVNode(e.tag,{class:["v-list-item-subtitle",e.class],style:[{"--v-list-item-subtitle-opacity":e.opacity},e.style]},l))),{}}}),sr=Pt("v-list-item-title"),ur=gt({active:{type:Boolean,default:void 0},activeClass:String,activeColor:String,appendAvatar:String,appendIcon:Mt,baseColor:String,disabled:Boolean,lines:[Boolean,String],link:{type:Boolean,default:void 0},nav:Boolean,prependAvatar:String,prependIcon:Mt,ripple:{type:[Boolean,Object],default:!0},slim:Boolean,subtitle:[String,Number],title:[String,Number],value:null,onClick:G(),onClickOnce:G(),...yl(),...ht(),...Bl(),...ll(),...Vl(),...cl(),...fo(),...Pa(),...wa(),...Dl({variant:"text"})},"VListItem"),cr=It()({name:"VListItem",directives:{Ripple:To},props:ur(),emits:{click:e=>!0},setup(e,a){let{attrs:l,slots:o,emit:n}=a
+const r=po(e,l),i=t.computed((()=>void 0===e.value?r.href.value:e.value)),{activate:s,isActivated:u,select:c,isOpen:d,isSelected:v,isIndeterminate:p,isGroupActivator:f,root:m,parent:g,openOnSelect:h,id:y}=ar(i,!1),b=Wn(),V=t.computed((()=>!1!==e.active&&(e.active||r.isActive?.value||(m.activatable.value?u.value:v.value)))),w=t.computed((()=>!1!==e.link&&r.isLink.value)),S=t.computed((()=>!!b&&(m.selectable.value||m.activatable.value||null!=e.value))),k=t.computed((()=>!e.disabled&&!1!==e.link&&(e.link||r.isClickable.value||S.value))),x=t.computed((()=>e.rounded||e.nav)),N=t.computed((()=>e.color??e.activeColor)),C=t.computed((()=>({color:V.value?N.value??e.baseColor:e.baseColor,variant:e.variant})))
+function _(){null!=g.value&&m.open(g.value,!0),h(!0)}t.watch((()=>r.isActive?.value),(e=>{e&&_()})),t.onBeforeMount((()=>{r.isActive?.value&&_()}))
+const{themeClasses:I}=ka(e),{borderClasses:P}=bl(e),{colorClasses:B,colorStyles:A,variantClasses:R}=El(C),{densityClasses:T}=Al(e),{dimensionStyles:D}=ol(e),{elevationClasses:E}=wl(e),{roundedClasses:F}=dl(x),$=t.computed((()=>e.lines?`v-list-item--${e.lines}-line`:void 0)),M=t.computed((()=>({isActive:V.value,select:c,isOpen:d.value,isSelected:v.value,isIndeterminate:p.value})))
+function O(t){n("click",t),k.value&&(r.navigate?.(t),f||(m.activatable.value?s(!u.value,t):(m.selectable.value||null!=e.value)&&c(!v.value,t)))}function L(e){"Enter"!==e.key&&" "!==e.key||(e.preventDefault(),e.target.dispatchEvent(new MouseEvent("click",e)))}return $t((()=>{const a=w.value?"a":e.tag,l=o.title||null!=e.title,n=o.subtitle||null!=e.subtitle,i=!(!e.appendAvatar&&!e.appendIcon),s=!(!i&&!o.append),c=!(!e.prependAvatar&&!e.prependIcon),d=!(!c&&!o.prepend)
+var p,f
+return b?.updateHasPrepend(d),e.activeColor&&(p="active-color",f=["color","base-color"],f=Array.isArray(f)?f.slice(0,-1).map((e=>`'${e}'`)).join(", ")+` or '${f.at(-1)}'`:`'${f}'`,t.warn(`[Vuetify UPGRADE] '${p}' is deprecated, use ${f} instead.`)),t.withDirectives(t.createVNode(a,t.mergeProps({class:["v-list-item",{"v-list-item--active":V.value,"v-list-item--disabled":e.disabled,"v-list-item--link":k.value,"v-list-item--nav":e.nav,"v-list-item--prepend":!d&&b?.hasPrepend.value,"v-list-item--slim":e.slim,[`${e.activeClass}`]:e.activeClass&&V.value},I.value,P.value,B.value,T.value,E.value,$.value,F.value,R.value,e.class],style:[A.value,D.value,e.style],tabindex:k.value?b?-2:0:void 0,"aria-selected":S.value?m.activatable.value?u.value:m.selectable.value?v.value:V.value:void 0,onClick:O,onKeydown:k.value&&!w.value&&L},r.linkProps),{default:()=>[Tl(k.value||V.value,"v-list-item"),d&&t.createVNode("div",{key:"prepend",class:"v-list-item__prepend"},[o.prepend?t.createVNode(al,{key:"prepend-defaults",disabled:!c,defaults:{VAvatar:{density:e.density,image:e.prependAvatar},VIcon:{density:e.density,icon:e.prependIcon},VListItemAction:{start:!0}}},{default:()=>[o.prepend?.(M.value)]}):t.createVNode(t.Fragment,null,[e.prependAvatar&&t.createVNode(Wo,{key:"prepend-avatar",density:e.density,image:e.prependAvatar},null),e.prependIcon&&t.createVNode(Xl,{key:"prepend-icon",density:e.density,icon:e.prependIcon},null)]),t.createVNode("div",{class:"v-list-item__spacer"},null)]),t.createVNode("div",{class:"v-list-item__content","data-no-activator":""},[l&&t.createVNode(sr,{key:"title"},{default:()=>[o.title?.({title:e.title})??e.title]}),n&&t.createVNode(ir,{key:"subtitle"},{default:()=>[o.subtitle?.({subtitle:e.subtitle})??e.subtitle]}),o.default?.(M.value)]),s&&t.createVNode("div",{key:"append",class:"v-list-item__append"},[o.append?t.createVNode(al,{key:"append-defaults",disabled:!i,defaults:{VAvatar:{density:e.density,image:e.appendAvatar},VIcon:{density:e.density,icon:e.appendIcon},VListItemAction:{end:!0}}},{default:()=>[o.append?.(M.value)]}):t.createVNode(t.Fragment,null,[e.appendIcon&&t.createVNode(Xl,{key:"append-icon",density:e.density,icon:e.appendIcon},null),e.appendAvatar&&t.createVNode(Wo,{key:"append-avatar",density:e.density,image:e.appendAvatar},null)]),t.createVNode("div",{class:"v-list-item__spacer"},null)])]}),[[t.resolveDirective("ripple"),k.value&&e.ripple]])})),{activate:s,isActivated:u,isGroupActivator:f,isSelected:v,list:b,select:c,root:m,id:y}}}),dr=gt({color:String,inset:Boolean,sticky:Boolean,title:String,...ht(),...Pa()},"VListSubheader"),vr=It()({name:"VListSubheader",props:dr(),setup(e,a){let{slots:l}=a
+const{textColorClasses:o,textColorStyles:n}=sl(t.toRef(e,"color"))
+return $t((()=>{const a=!(!l.default&&!e.title)
+return t.createVNode(e.tag,{class:["v-list-subheader",{"v-list-subheader--inset":e.inset,"v-list-subheader--sticky":e.sticky},o.value,e.class],style:[{textColorStyles:n},e.style]},{default:()=>[a&&t.createVNode("div",{class:"v-list-subheader__text"},[l.default?.()??e.title])]})})),{}}}),pr=gt({color:String,inset:Boolean,length:[Number,String],opacity:[Number,String],thickness:[Number,String],vertical:Boolean,...ht(),...wa()},"VDivider"),fr=It()({name:"VDivider",props:pr(),setup(e,a){let{attrs:l,slots:o}=a
+const{themeClasses:n}=ka(e),{textColorClasses:r,textColorStyles:i}=sl(t.toRef(e,"color")),s=t.computed((()=>{const t={}
+return e.length&&(t[e.vertical?"height":"width"]=f(e.length)),e.thickness&&(t[e.vertical?"borderRightWidth":"borderTopWidth"]=f(e.thickness)),t}))
+return $t((()=>{const a=t.createVNode("hr",{class:[{"v-divider":!0,"v-divider--inset":e.inset,"v-divider--vertical":e.vertical},n.value,r.value,e.class],style:[s.value,i.value,{"--v-border-opacity":e.opacity},e.style],"aria-orientation":l.role&&"separator"!==l.role?void 0:e.vertical?"vertical":"horizontal",role:`${l.role||"separator"}`},null)
+return o.default?t.createVNode("div",{class:["v-divider__wrapper",{"v-divider__wrapper--vertical":e.vertical,"v-divider__wrapper--inset":e.inset}]},[a,t.createVNode("div",{class:"v-divider__content"},[o.default()]),a]):a})),{}}}),mr=gt({items:Array,returnObject:Boolean},"VListChildren"),gr=It()({name:"VListChildren",props:mr(),setup(e,a){let{slots:l}=a
+return Hn(),()=>l.default?.()??e.items?.map((a=>{let{children:o,props:n,type:r,raw:i}=a
+if("divider"===r)return l.divider?.({props:n})??t.createVNode(fr,n,null)
+if("subheader"===r)return l.subheader?.({props:n})??t.createVNode(vr,n,null)
+const s={subtitle:l.subtitle?e=>l.subtitle?.({...e,item:i}):void 0,prepend:l.prepend?e=>l.prepend?.({...e,item:i}):void 0,append:l.append?e=>l.append?.({...e,item:i}):void 0,title:l.title?e=>l.title?.({...e,item:i}):void 0},u=nr.filterProps(n)
+return o?t.createVNode(nr,t.mergeProps({value:n?.value},u),{activator:a=>{let{props:o}=a
+const r={...n,...o,value:e.returnObject?i:n.value}
+return l.header?l.header({props:r}):t.createVNode(cr,r,s)},default:()=>t.createVNode(gr,{items:o,returnObject:e.returnObject},l)}):l.item?l.item({props:n}):t.createVNode(cr,t.mergeProps(n,{value:e.returnObject?i:n.value}),s)}))}}),hr=gt({items:{type:Array,default:()=>[]},itemTitle:{type:[String,Array,Function],default:"title"},itemValue:{type:[String,Array,Function],default:"value"},itemChildren:{type:[Boolean,String,Array,Function],default:"children"},itemProps:{type:[Boolean,String,Array,Function],default:"props"},returnObject:Boolean,valueComparator:{type:Function,default:c}},"list-items")
+function yr(e,t){const a=v(t,e.itemTitle,t),l=v(t,e.itemValue,a),o=v(t,e.itemChildren),n={title:a,value:l,...!0===e.itemProps?"object"!=typeof t||null==t||Array.isArray(t)?void 0:"children"in t?x(t,["children"]):t:v(t,e.itemProps)}
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+return a}function Vr(e){const a=t.computed((()=>br(e,e.items))),l=t.computed((()=>a.value.some((e=>null===e.value))))
+return{items:a,transformIn:function(t){return l.value||(t=t.filter((e=>null!==e))),t.map((t=>e.returnObject&&"string"==typeof t?yr(e,t):a.value.find((a=>e.valueComparator(t,a.value)))||yr(e,t)))},transformOut:function(t){return e.returnObject?t.map((e=>{let{raw:t}=e
+return t})):t.map((e=>{let{value:t}=e
+return t}))}}}function wr(e,t){const a=v(t,e.itemType,"item"),l=function(e){return"string"==typeof e||"number"==typeof e||"boolean"==typeof e}(t)?t:v(t,e.itemTitle),o=v(t,e.itemValue,void 0),n=v(t,e.itemChildren),r={title:l,value:o,...!0===e.itemProps?x(t,["children"]):v(t,e.itemProps)}
+return{type:a,title:r.title,value:r.value,props:r,children:"item"===a&&n?Sr(e,n):void 0,raw:t}}function Sr(e,t){const a=[]
+for(const l of t)a.push(wr(e,l))
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+Hn(),Nt({VListGroup:{activeColor:b,baseColor:V,color:w,expandIcon:t.toRef(e,"expandIcon"),collapseIcon:t.toRef(e,"collapseIcon")},VListItem:{activeClass:t.toRef(e,"activeClass"),activeColor:b,baseColor:V,color:w,density:t.toRef(e,"density"),disabled:t.toRef(e,"disabled"),lines:t.toRef(e,"lines"),nav:t.toRef(e,"nav"),slim:t.toRef(e,"slim"),variant:t.toRef(e,"variant")}})
+const S=t.shallowRef(!1),k=t.ref()
+function x(e){S.value=!0}function N(e){S.value=!1}function C(e){S.value||e.relatedTarget&&k.value?.contains(e.relatedTarget)||P()}function _(e){const t=e.target
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+else if("Home"===e.key)P("first")
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+return $t((()=>t.createVNode(e.tag,{class:["v-list-item-media",{"v-list-item-media--start":e.start,"v-list-item-media--end":e.end},e.class],style:e.style},l))),{}}})
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+return Nt({VBtn:{color:e.color,density:e.density,slim:!0,variant:"text"}}),$t((()=>t.createVNode("div",{class:["v-banner-actions",e.class],style:e.style},[l.default?.()]))),{}}}),Wi=Pt("v-banner-text"),Ui=gt({avatar:String,bgColor:String,color:String,icon:Mt,lines:String,stacked:Boolean,sticky:Boolean,text:String,...yl(),...ht(),...Bl(),...ll(),...kn({mobile:null}),...Vl(),...to(),...uo(),...cl(),...Pa(),...wa()},"VBanner"),Yi=It()({name:"VBanner",props:Ui(),setup(e,a){let{slots:l}=a
+const{backgroundColorClasses:o,backgroundColorStyles:n}=ul(e,"bgColor"),{borderClasses:r}=bl(e),{densityClasses:i}=Al(e),{displayClasses:s,mobile:u}=xn(e),{dimensionStyles:c}=ol(e),{elevationClasses:d}=wl(e),{locationStyles:v}=ao(e),{positionClasses:p}=co(e),{roundedClasses:f}=dl(e),{themeClasses:m}=ka(e),g=t.toRef(e,"color"),h=t.toRef(e,"density")
+Nt({VBannerActions:{color:g,density:h}}),$t((()=>{const a=!(!e.text&&!l.text),y=!(!e.avatar&&!e.icon),b=!(!y&&!l.prepend)
+return t.createVNode(e.tag,{class:["v-banner",{"v-banner--stacked":e.stacked||u.value,"v-banner--sticky":e.sticky,[`v-banner--${e.lines}-line`]:!!e.lines},m.value,o.value,r.value,i.value,s.value,d.value,p.value,f.value,e.class],style:[n.value,c.value,v.value,e.style],role:"banner"},{default:()=>[b&&t.createVNode("div",{key:"prepend",class:"v-banner__prepend"},[l.prepend?t.createVNode(al,{key:"prepend-defaults",disabled:!y,defaults:{VAvatar:{color:g.value,density:h.value,icon:e.icon,image:e.avatar}}},l.prepend):t.createVNode(Wo,{key:"prepend-avatar",color:g.value,density:h.value,icon:e.icon,image:e.avatar},null)]),t.createVNode("div",{class:"v-banner__content"},[a&&t.createVNode(Wi,{key:"text"},{default:()=>[l.text?.()??e.text]}),l.default?.()]),l.actions&&t.createVNode(Hi,{key:"actions"},l.actions)]})}))}}),Gi=gt({baseColor:String,bgColor:String,color:String,grow:Boolean,mode:{type:String,validator:e=>!e||["horizontal","shift"].includes(e)},height:{type:[Number,String],default:56},active:{type:Boolean,default:!0},...yl(),...ht(),...Bl(),...Vl(),...cl(),...aa({name:"bottom-navigation"}),...Pa({tag:"header"}),...Ml({selectedClass:"v-btn--selected"}),...wa()},"VBottomNavigation"),qi=It()({name:"VBottomNavigation",props:Gi(),emits:{"update:active":e=>!0,"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const{themeClasses:o}=xa(),{borderClasses:n}=bl(e),{backgroundColorClasses:r,backgroundColorStyles:i}=ul(t.toRef(e,"bgColor")),{densityClasses:s}=Al(e),{elevationClasses:u}=wl(e),{roundedClasses:c}=dl(e),{ssrBootStyles:d}=Cl(),v=t.computed((()=>Number(e.height)-("comfortable"===e.density?8:0)-("compact"===e.density?16:0))),p=ia(e,"active",e.active),{layoutItemStyles:m}=oa({id:e.name,order:t.computed((()=>parseInt(e.order,10))),position:t.computed((()=>"bottom")),layoutSize:t.computed((()=>p.value?v.value:0)),elementSize:v,active:p,absolute:t.toRef(e,"absolute")})
+return zl(e,Hl),Nt({VBtn:{baseColor:t.toRef(e,"baseColor"),color:t.toRef(e,"color"),density:t.toRef(e,"density"),stacked:t.computed((()=>"horizontal"!==e.mode)),variant:"text"}},{scoped:!0}),$t((()=>t.createVNode(e.tag,{class:["v-bottom-navigation",{"v-bottom-navigation--active":p.value,"v-bottom-navigation--grow":e.grow,"v-bottom-navigation--shift":"shift"===e.mode},o.value,r.value,n.value,s.value,u.value,c.value,e.class],style:[i.value,m.value,{height:f(v.value)},d.value,e.style]},{default:()=>[l.default&&t.createVNode("div",{class:"v-bottom-navigation__content"},[l.default()])]}))),{}}}),Ki=gt({fullscreen:Boolean,retainFocus:{type:Boolean,default:!0},scrollable:Boolean,...ii({origin:"center center",scrollStrategy:"block",transition:{component:$a},zIndex:2400})},"VDialog"),Xi=It()({name:"VDialog",props:Ki(),emits:{"update:modelValue":e=>!0,afterEnter:()=>!0,afterLeave:()=>!0},setup(e,l){let{emit:o,slots:n}=l
+const r=ia(e,"modelValue"),{scopeId:i}=Qr(),s=t.ref()
+function u(e){const t=e.relatedTarget,a=e.target
+if(t!==a&&s.value?.contentEl&&s.value?.globalTop&&![document,s.value.contentEl].includes(a)&&!s.value.contentEl.contains(a)){const e=X(s.value.contentEl)
+if(!e.length)return
+const a=e[0],l=e[e.length-1]
+t===a?l.focus():a.focus()}}function c(){o("afterEnter"),s.value?.contentEl&&!s.value.contentEl.contains(document.activeElement)&&s.value.contentEl.focus({preventScroll:!0})}function d(){o("afterLeave")}return t.onBeforeUnmount((()=>{document.removeEventListener("focusin",u)})),a&&t.watch((()=>r.value&&e.retainFocus),(e=>{e?document.addEventListener("focusin",u):document.removeEventListener("focusin",u)}),{immediate:!0}),t.watch(r,(async e=>{e||(await t.nextTick(),s.value.activatorEl?.focus({preventScroll:!0}))})),$t((()=>{const a=si.filterProps(e),l=t.mergeProps({"aria-haspopup":"dialog"},e.activatorProps),o=t.mergeProps({tabindex:-1},e.contentProps)
+return t.createVNode(si,t.mergeProps({ref:s,class:["v-dialog",{"v-dialog--fullscreen":e.fullscreen,"v-dialog--scrollable":e.scrollable},e.class],style:e.style},a,{modelValue:r.value,"onUpdate:modelValue":e=>r.value=e,"aria-modal":"true",activatorProps:l,contentProps:o,height:e.fullscreen?void 0:e.height,width:e.fullscreen?void 0:e.width,maxHeight:e.fullscreen?void 0:e.maxHeight,maxWidth:e.fullscreen?void 0:e.maxWidth,role:"dialog",onAfterEnter:c,onAfterLeave:d},i),{activator:n.activator,default:function(){for(var e=arguments.length,a=new Array(e),l=0;l<e;l++)a[l]=arguments[l]
+return t.createVNode(al,{root:"VDialog"},{default:()=>[n.default?.(...a)]})}})})),di({},s)}}),Zi=gt({inset:Boolean,...Ki({transition:"bottom-sheet-transition"})},"VBottomSheet"),Qi=It()({name:"VBottomSheet",props:Zi(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const o=ia(e,"modelValue")
+return $t((()=>{const a=Xi.filterProps(e)
+return t.createVNode(Xi,t.mergeProps(a,{contentClass:["v-bottom-sheet__content",e.contentClass],modelValue:o.value,"onUpdate:modelValue":e=>o.value=e,class:["v-bottom-sheet",{"v-bottom-sheet--inset":e.inset},e.class],style:e.style}),l)})),{}}}),Ji=gt({divider:[Number,String],...ht()},"VBreadcrumbsDivider"),es=It()({name:"VBreadcrumbsDivider",props:Ji(),setup(e,a){let{slots:l}=a
+return $t((()=>t.createVNode("li",{class:["v-breadcrumbs-divider",e.class],style:e.style},[l?.default?.()??e.divider]))),{}}}),ts=gt({active:Boolean,activeClass:String,activeColor:String,color:String,disabled:Boolean,title:String,...ht(),...fo(),...Pa({tag:"li"})},"VBreadcrumbsItem"),as=It()({name:"VBreadcrumbsItem",props:ts(),setup(e,a){let{slots:l,attrs:o}=a
+const n=po(e,o),r=t.computed((()=>e.active||n.isActive?.value)),i=t.computed((()=>r.value?e.activeColor:e.color)),{textColorClasses:s,textColorStyles:u}=sl(i)
+return $t((()=>t.createVNode(e.tag,{class:["v-breadcrumbs-item",{"v-breadcrumbs-item--active":r.value,"v-breadcrumbs-item--disabled":e.disabled,[`${e.activeClass}`]:r.value&&e.activeClass},s.value,e.class],style:[u.value,e.style],"aria-current":r.value?"page":void 0},{default:()=>[n.isLink.value?t.createVNode("a",t.mergeProps({class:"v-breadcrumbs-item--link",onClick:n.navigate},n.linkProps),[l.default?.()??e.title]):l.default?.()??e.title]}))),{}}}),ls=gt({activeClass:String,activeColor:String,bgColor:String,color:String,disabled:Boolean,divider:{type:String,default:"/"},icon:Mt,items:{type:Array,default:()=>[]},...ht(),...Bl(),...cl(),...Pa({tag:"ul"})},"VBreadcrumbs"),os=It()({name:"VBreadcrumbs",props:ls(),setup(e,a){let{slots:l}=a
+const{backgroundColorClasses:o,backgroundColorStyles:n}=ul(t.toRef(e,"bgColor")),{densityClasses:r}=Al(e),{roundedClasses:i}=dl(e)
+Nt({VBreadcrumbsDivider:{divider:t.toRef(e,"divider")},VBreadcrumbsItem:{activeClass:t.toRef(e,"activeClass"),activeColor:t.toRef(e,"activeColor"),color:t.toRef(e,"color"),disabled:t.toRef(e,"disabled")}})
+const s=t.computed((()=>e.items.map((e=>"string"==typeof e?{item:{title:e},raw:e}:{item:e,raw:e}))))
+return $t((()=>{const a=!(!l.prepend&&!e.icon)
+return t.createVNode(e.tag,{class:["v-breadcrumbs",o.value,r.value,i.value,e.class],style:[n.value,e.style]},{default:()=>[a&&t.createVNode("li",{key:"prepend",class:"v-breadcrumbs__prepend"},[l.prepend?t.createVNode(al,{key:"prepend-defaults",disabled:!e.icon,defaults:{VIcon:{icon:e.icon,start:!0}}},l.prepend):t.createVNode(Xl,{key:"prepend-icon",start:!0,icon:e.icon},null)]),s.value.map(((e,a,o)=>{let{item:n,raw:r}=e
+return t.createVNode(t.Fragment,null,[l.item?.({item:n,index:a})??t.createVNode(as,t.mergeProps({key:a,disabled:a>=o.length-1},"string"==typeof n?{title:n}:n),{default:l.title?()=>l.title?.({item:n,index:a}):void 0}),a<o.length-1&&t.createVNode(es,null,{default:l.divider?()=>l.divider?.({item:r,index:a}):void 0})])})),l.default?.()]})})),{}}}),ns=It()({name:"VCardActions",props:ht(),setup(e,a){let{slots:l}=a
+return Nt({VBtn:{slim:!0,variant:"text"}}),$t((()=>t.createVNode("div",{class:["v-card-actions",e.class],style:e.style},[l.default?.()]))),{}}}),rs=gt({opacity:[Number,String],...ht(),...Pa()},"VCardSubtitle"),is=It()({name:"VCardSubtitle",props:rs(),setup(e,a){let{slots:l}=a
+return $t((()=>t.createVNode(e.tag,{class:["v-card-subtitle",e.class],style:[{"--v-card-subtitle-opacity":e.opacity},e.style]},l))),{}}}),ss=Pt("v-card-title"),us=gt({appendAvatar:String,appendIcon:Mt,prependAvatar:String,prependIcon:Mt,subtitle:[String,Number],title:[String,Number],...ht(),...Bl()},"VCardItem"),cs=It()({name:"VCardItem",props:us(),setup(e,a){let{slots:l}=a
+return $t((()=>{const a=!(!e.prependAvatar&&!e.prependIcon),o=!(!a&&!l.prepend),n=!(!e.appendAvatar&&!e.appendIcon),r=!(!n&&!l.append),i=!(null==e.title&&!l.title),s=!(null==e.subtitle&&!l.subtitle)
+return t.createVNode("div",{class:["v-card-item",e.class],style:e.style},[o&&t.createVNode("div",{key:"prepend",class:"v-card-item__prepend"},[l.prepend?t.createVNode(al,{key:"prepend-defaults",disabled:!a,defaults:{VAvatar:{density:e.density,image:e.prependAvatar},VIcon:{density:e.density,icon:e.prependIcon}}},l.prepend):t.createVNode(t.Fragment,null,[e.prependAvatar&&t.createVNode(Wo,{key:"prepend-avatar",density:e.density,image:e.prependAvatar},null),e.prependIcon&&t.createVNode(Xl,{key:"prepend-icon",density:e.density,icon:e.prependIcon},null)])]),t.createVNode("div",{class:"v-card-item__content"},[i&&t.createVNode(ss,{key:"title"},{default:()=>[l.title?.()??e.title]}),s&&t.createVNode(is,{key:"subtitle"},{default:()=>[l.subtitle?.()??e.subtitle]}),l.default?.()]),r&&t.createVNode("div",{key:"append",class:"v-card-item__append"},[l.append?t.createVNode(al,{key:"append-defaults",disabled:!n,defaults:{VAvatar:{density:e.density,image:e.appendAvatar},VIcon:{density:e.density,icon:e.appendIcon}}},l.append):t.createVNode(t.Fragment,null,[e.appendIcon&&t.createVNode(Xl,{key:"append-icon",density:e.density,icon:e.appendIcon},null),e.appendAvatar&&t.createVNode(Wo,{key:"append-avatar",density:e.density,image:e.appendAvatar},null)])])])})),{}}}),ds=gt({opacity:[Number,String],...ht(),...Pa()},"VCardText"),vs=It()({name:"VCardText",props:ds(),setup(e,a){let{slots:l}=a
+return $t((()=>t.createVNode(e.tag,{class:["v-card-text",e.class],style:[{"--v-card-text-opacity":e.opacity},e.style]},l))),{}}}),ps=gt({appendAvatar:String,appendIcon:Mt,disabled:Boolean,flat:Boolean,hover:Boolean,image:String,link:{type:Boolean,default:void 0},prependAvatar:String,prependIcon:Mt,ripple:{type:[Boolean,Object],default:!0},subtitle:[String,Number],text:[String,Number],title:[String,Number],...yl(),...ht(),...Bl(),...ll(),...Vl(),...no(),...to(),...uo(),...cl(),...fo(),...Pa(),...wa(),...Dl({variant:"elevated"})},"VCard"),fs=It()({name:"VCard",directives:{Ripple:To},props:ps(),setup(e,a){let{attrs:l,slots:o}=a
+const{themeClasses:n}=ka(e),{borderClasses:r}=bl(e),{colorClasses:i,colorStyles:s,variantClasses:u}=El(e),{densityClasses:c}=Al(e),{dimensionStyles:d}=ol(e),{elevationClasses:v}=wl(e),{loaderClasses:p}=ro(e),{locationStyles:f}=ao(e),{positionClasses:m}=co(e),{roundedClasses:g}=dl(e),h=po(e,l),y=t.computed((()=>!1!==e.link&&h.isLink.value)),b=t.computed((()=>!e.disabled&&!1!==e.link&&(e.link||h.isClickable.value)))
+return $t((()=>{const a=y.value?"a":e.tag,l=!(!o.title&&null==e.title),V=!(!o.subtitle&&null==e.subtitle),w=l||V,S=!!(o.append||e.appendAvatar||e.appendIcon),k=!!(o.prepend||e.prependAvatar||e.prependIcon),x=!(!o.image&&!e.image),N=w||k||S,C=!(!o.text&&null==e.text)
+return t.withDirectives(t.createVNode(a,t.mergeProps({class:["v-card",{"v-card--disabled":e.disabled,"v-card--flat":e.flat,"v-card--hover":e.hover&&!(e.disabled||e.flat),"v-card--link":b.value},n.value,r.value,i.value,c.value,v.value,p.value,m.value,g.value,u.value,e.class],style:[s.value,d.value,f.value,e.style],onClick:b.value&&h.navigate,tabindex:e.disabled?-1:void 0},h.linkProps),{default:()=>[x&&t.createVNode("div",{key:"image",class:"v-card__image"},[o.image?t.createVNode(al,{key:"image-defaults",disabled:!e.image,defaults:{VImg:{cover:!0,src:e.image}}},o.image):t.createVNode(hl,{key:"image-img",cover:!0,src:e.image},null)]),t.createVNode(io,{name:"v-card",active:!!e.loading,color:"boolean"==typeof e.loading?void 0:e.loading},{default:o.loader}),N&&t.createVNode(cs,{key:"item",prependAvatar:e.prependAvatar,prependIcon:e.prependIcon,title:e.title,subtitle:e.subtitle,appendAvatar:e.appendAvatar,appendIcon:e.appendIcon},{default:o.item,prepend:o.prepend,title:o.title,subtitle:o.subtitle,append:o.append}),C&&t.createVNode(vs,{key:"text"},{default:()=>[o.text?.()??e.text]}),o.default?.(),o.actions&&t.createVNode(ns,null,{default:o.actions}),Tl(b.value,"v-card")]}),[[t.resolveDirective("ripple"),b.value&&e.ripple]])})),{}}}),ms=e=>{const{touchstartX:t,touchendX:a,touchstartY:l,touchendY:o}=e
+e.offsetX=a-t,e.offsetY=o-l,Math.abs(e.offsetY)<.5*Math.abs(e.offsetX)&&(e.left&&a<t-16&&e.left(e),e.right&&a>t+16&&e.right(e)),Math.abs(e.offsetX)<.5*Math.abs(e.offsetY)&&(e.up&&o<l-16&&e.up(e),e.down&&o>l+16&&e.down(e))}
+function gs(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{}
+const t={touchstartX:0,touchstartY:0,touchendX:0,touchendY:0,touchmoveX:0,touchmoveY:0,offsetX:0,offsetY:0,left:e.left,right:e.right,up:e.up,down:e.down,start:e.start,move:e.move,end:e.end}
+return{touchstart:e=>function(e,t){const a=e.changedTouches[0]
+t.touchstartX=a.clientX,t.touchstartY=a.clientY,t.start?.({originalEvent:e,...t})}(e,t),touchend:e=>function(e,t){const a=e.changedTouches[0]
+t.touchendX=a.clientX,t.touchendY=a.clientY,t.end?.({originalEvent:e,...t}),ms(t)}(e,t),touchmove:e=>function(e,t){const a=e.changedTouches[0]
+t.touchmoveX=a.clientX,t.touchmoveY=a.clientY,t.move?.({originalEvent:e,...t})}(e,t)}}const hs={mounted:function(e,t){const a=t.value,l=a?.parent?e.parentElement:e,o=a?.options??{passive:!0},n=t.instance?.$.uid
+if(!l||!n)return
+const r=gs(t.value)
+l._touchHandlers=l._touchHandlers??Object.create(null),l._touchHandlers[n]=r,V(r).forEach((e=>{l.addEventListener(e,r[e],o)}))},unmounted:function(e,t){const a=t.value?.parent?e.parentElement:e,l=t.instance?.$.uid
+if(!a?._touchHandlers||!l)return
+const o=a._touchHandlers[l]
+V(o).forEach((e=>{a.removeEventListener(e,o[e])})),delete a._touchHandlers[l]}},ys=Symbol.for("vuetify:v-window"),bs=Symbol.for("vuetify:v-window-group"),Vs=gt({continuous:Boolean,nextIcon:{type:[Boolean,String,Function,Object],default:"$next"},prevIcon:{type:[Boolean,String,Function,Object],default:"$prev"},reverse:Boolean,showArrows:{type:[Boolean,String],validator:e=>"boolean"==typeof e||"hover"===e},touch:{type:[Object,Boolean],default:void 0},direction:{type:String,default:"horizontal"},modelValue:null,disabled:Boolean,selectedClass:{type:String,default:"v-window-item--active"},mandatory:{type:[Boolean,String],default:"force"},...ht(),...Pa(),...wa()},"VWindow"),ws=It()({name:"VWindow",directives:{Touch:hs},props:Vs(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const{themeClasses:o}=ka(e),{isRtl:n}=ba(),{t:r}=ha(),i=zl(e,bs),s=t.ref(),u=t.computed((()=>n.value?!e.reverse:e.reverse)),c=t.shallowRef(!1),d=t.computed((()=>`v-window-${"vertical"===e.direction?"y":"x"}${(u.value?!c.value:c.value)?"-reverse":""}-transition`)),v=t.shallowRef(0),p=t.ref(void 0),f=t.computed((()=>i.items.value.findIndex((e=>i.selected.value.includes(e.id)))))
+t.watch(f,((e,t)=>{const a=i.items.value.length,l=a-1
+c.value=a<=2?e<t:e===l&&0===t||(0!==e||t!==l)&&e<t})),t.provide(ys,{transition:d,isReversed:c,transitionCount:v,transitionHeight:p,rootRef:s})
+const m=t.computed((()=>e.continuous||0!==f.value)),g=t.computed((()=>e.continuous||f.value!==i.items.value.length-1))
+function h(){m.value&&i.prev()}function y(){g.value&&i.next()}const b=t.computed((()=>{const a=[],o={icon:n.value?e.nextIcon:e.prevIcon,class:"v-window__"+(u.value?"right":"left"),onClick:i.prev,"aria-label":r("$vuetify.carousel.prev")}
+a.push(m.value?l.prev?l.prev({props:o}):t.createVNode(Eo,o,null):t.createVNode("div",null,null))
+const s={icon:n.value?e.prevIcon:e.nextIcon,class:"v-window__"+(u.value?"left":"right"),onClick:i.next,"aria-label":r("$vuetify.carousel.next")}
+return a.push(g.value?l.next?l.next({props:s}):t.createVNode(Eo,s,null):t.createVNode("div",null,null)),a})),V=t.computed((()=>{if(!1===e.touch)return e.touch
+return{...{left:()=>{u.value?h():y()},right:()=>{u.value?y():h()},start:e=>{let{originalEvent:t}=e
+t.stopPropagation()}},...!0===e.touch?{}:e.touch}}))
+return $t((()=>t.withDirectives(t.createVNode(e.tag,{ref:s,class:["v-window",{"v-window--show-arrows-on-hover":"hover"===e.showArrows},o.value,e.class],style:e.style},{default:()=>[t.createVNode("div",{class:"v-window__container",style:{height:p.value}},[l.default?.({group:i}),!1!==e.showArrows&&t.createVNode("div",{class:"v-window__controls"},[b.value])]),l.additional?.({group:i})]}),[[t.resolveDirective("touch"),V.value]]))),{group:i}}}),Ss=gt({color:String,cycle:Boolean,delimiterIcon:{type:Mt,default:"$delimiter"},height:{type:[Number,String],default:500},hideDelimiters:Boolean,hideDelimiterBackground:Boolean,interval:{type:[Number,String],default:6e3,validator:e=>Number(e)>0},progress:[Boolean,String],verticalDelimiters:[Boolean,String],...Vs({continuous:!0,mandatory:"force",showArrows:!0})},"VCarousel"),ks=It()({name:"VCarousel",props:Ss(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const o=ia(e,"modelValue"),{t:n}=ha(),r=t.ref()
+let i=-1
+function s(){e.cycle&&r.value&&(i=window.setTimeout(r.value.group.next,+e.interval>0?+e.interval:6e3))}function u(){window.clearTimeout(i),window.requestAnimationFrame(s)}return t.watch(o,u),t.watch((()=>e.interval),u),t.watch((()=>e.cycle),(e=>{e?u():window.clearTimeout(i)})),t.onMounted(s),$t((()=>{const a=ws.filterProps(e)
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+return t.createVNode(t.Fragment,null,[!e.hideDelimiters&&t.createVNode("div",{class:"v-carousel__controls",style:{left:"left"===e.verticalDelimiters&&e.verticalDelimiters?0:"auto",right:"right"===e.verticalDelimiters?0:"auto"}},[r.items.value.length>0&&t.createVNode(al,{defaults:{VBtn:{color:e.color,icon:e.delimiterIcon,size:"x-small",variant:"text"}},scoped:!0},{default:()=>[r.items.value.map(((e,a)=>{const o={id:`carousel-item-${e.id}`,"aria-label":n("$vuetify.carousel.ariaLabel.delimiter",a+1,r.items.value.length),class:["v-carousel__controls__item",r.isSelected(e.id)&&"v-btn--active"],onClick:()=>r.select(e.id,!0)}
+return l.item?l.item({props:o,item:e}):t.createVNode(Eo,t.mergeProps(e,o),null)}))]})]),e.progress&&t.createVNode(oo,{class:"v-carousel__progress",color:"string"==typeof e.progress?e.progress:void 0,modelValue:(r.getItemIndex(o.value)+1)/r.items.value.length*100},null)])},prev:l.prev,next:l.next})})),{}}}),xs=gt({reverseTransition:{type:[Boolean,String],default:void 0},transition:{type:[Boolean,String],default:void 0},...ht(),...Ol(),...Xr()},"VWindowItem"),Ns=It()({name:"VWindowItem",directives:{Touch:hs},props:xs(),emits:{"group:selected":e=>!0},setup(e,a){let{slots:l}=a
+const o=t.inject(ys),n=Ll(e,bs),{isBooted:r}=Cl()
+if(!o||!n)throw new Error("[Vuetify] VWindowItem must be used inside VWindow")
+const i=t.shallowRef(!1),s=t.computed((()=>r.value&&(o.isReversed.value?!1!==e.reverseTransition:!1!==e.transition)))
+function u(){i.value&&o&&(i.value=!1,o.transitionCount.value>0&&(o.transitionCount.value-=1,0===o.transitionCount.value&&(o.transitionHeight.value=void 0)))}function c(){!i.value&&o&&(i.value=!0,0===o.transitionCount.value&&(o.transitionHeight.value=f(o.rootRef.value?.clientHeight)),o.transitionCount.value+=1)}function d(){u()}function v(e){i.value&&t.nextTick((()=>{s.value&&i.value&&o&&(o.transitionHeight.value=f(e.clientHeight))}))}const p=t.computed((()=>{const t=o.isReversed.value?e.reverseTransition:e.transition
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+return $t((()=>t.createVNode(pl,{transition:p.value,disabled:!r.value},{default:()=>[t.withDirectives(t.createVNode("div",{class:["v-window-item",n.selectedClass.value,e.class],style:e.style},[m.value&&l.default?.()]),[[t.vShow,n.isSelected.value]])]}))),{groupItem:n}}}),Cs=gt({...gl(),...xs()},"VCarouselItem"),_s=It()({name:"VCarouselItem",inheritAttrs:!1,props:Cs(),setup(e,a){let{slots:l,attrs:o}=a
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+const o=t.shallowRef(!1),n=t.ref(),r=t.shallowRef(parseFloat(e.width)),i=t.shallowRef(parseFloat(e.height)),s=t.ref({x:0,y:0}),u=t.computed({get:()=>s.value,set(t){if(!n.value)return
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+const t=n.value,a=t.getContext("2d")
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+const Bs={h:0,s:0,v:0,a:1},As={inputProps:{type:"number",min:0},inputs:[{label:"R",max:255,step:1,getValue:e=>Math.round(e.r),getColor:(e,t)=>({...e,r:Number(t)})},{label:"G",max:255,step:1,getValue:e=>Math.round(e.g),getColor:(e,t)=>({...e,g:Number(t)})},{label:"B",max:255,step:1,getValue:e=>Math.round(e.b),getColor:(e,t)=>({...e,b:Number(t)})},{label:"A",max:1,step:.01,getValue:e=>{let{a:t}=e
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+return null!=t?Math.round(100*t)/100:1},getColor:(e,t)=>({...e,a:Number(t)})}],to:lt,from:ot},Ts={inputProps:{type:"text"},inputs:[{label:"HEXA",getValue:e=>e,getColor:(e,t)=>t}],to:ct,from:function(e){return at(ut(e))}},Ds={rgb:{...As,inputs:As.inputs?.slice(0,3)},rgba:As,hsl:{...Rs,inputs:Rs.inputs.slice(0,3)},hsla:Rs,hex:{...Ts,inputs:[{label:"HEX",getValue:e=>e.slice(0,7),getColor:(e,t)=>t}]},hexa:Ts},Es=e=>{let{label:a,...l}=e
+return t.createVNode("div",{class:"v-color-picker-edit__input"},[t.createVNode("input",l,null),t.createVNode("span",null,[a])])},Fs=_t({name:"VColorPickerEdit",props:gt({color:Object,disabled:Boolean,mode:{type:String,default:"rgba",validator:e=>Object.keys(Ds).includes(e)},modes:{type:Array,default:()=>Object.keys(Ds),validator:e=>Array.isArray(e)&&e.every((e=>Object.keys(Ds).includes(e)))},...ht()},"VColorPickerEdit")(),emits:{"update:color":e=>!0,"update:mode":e=>!0},setup(e,a){let{emit:l}=a
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+if(!t)return[]
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+return $t((()=>t.createVNode("div",{class:["v-color-picker-edit",e.class],style:e.style},[n.value?.map((e=>t.createVNode(Es,e,null))),o.value.length>1&&t.createVNode(Eo,{icon:"$unfold",size:"x-small",variant:"plain",onClick:()=>{const t=o.value.findIndex((t=>t.name===e.mode))
+l("update:mode",o.value[(t+1)%o.value.length].name)}},null)]))),{}}}),$s=Symbol.for("vuetify:v-slider")
+function Ms(e,t,a){const l="vertical"===a,o=t.getBoundingClientRect(),n="touches"in e?e.touches[0]:e
+return l?n.clientY-(o.top+o.height/2):n.clientX-(o.left+o.width/2)}const Os=gt({disabled:{type:Boolean,default:null},error:Boolean,readonly:{type:Boolean,default:null},max:{type:[Number,String],default:100},min:{type:[Number,String],default:0},step:{type:[Number,String],default:0},thumbColor:String,thumbLabel:{type:[Boolean,String],default:void 0,validator:e=>"boolean"==typeof e||"always"===e},thumbSize:{type:[Number,String],default:20},showTicks:{type:[Boolean,String],default:!1,validator:e=>"boolean"==typeof e||"always"===e},ticks:{type:[Array,Object]},tickSize:{type:[Number,String],default:2},color:String,trackColor:String,trackFillColor:String,trackSize:{type:[Number,String],default:4},direction:{type:String,default:"horizontal",validator:e=>["vertical","horizontal"].includes(e)},reverse:Boolean,...cl(),...Vl({elevation:2}),ripple:{type:Boolean,default:!0}},"Slider"),Ls=e=>{const a=t.computed((()=>parseFloat(e.min))),l=t.computed((()=>parseFloat(e.max))),o=t.computed((()=>+e.step>0?parseFloat(e.step):0)),n=t.computed((()=>Math.max(T(o.value),T(a.value))))
+return{min:a,max:l,step:o,decimals:n,roundValue:function(e){if(e=parseFloat(e),o.value<=0)return e
+const t=R(e,a.value,l.value),r=a.value%o.value,i=Math.round((t-r)/o.value)*o.value+r
+return parseFloat(Math.min(i,l.value).toFixed(n.value))}}},zs=e=>{let{props:a,steps:l,onSliderStart:o,onSliderMove:n,onSliderEnd:r,getActiveThumb:i}=e
+const{isRtl:s}=ba(),u=t.toRef(a,"reverse"),c=t.computed((()=>"vertical"===a.direction)),d=t.computed((()=>c.value!==u.value)),{min:v,max:f,step:m,decimals:g,roundValue:h}=l,y=t.computed((()=>parseInt(a.thumbSize,10))),b=t.computed((()=>parseInt(a.tickSize,10))),V=t.computed((()=>parseInt(a.trackSize,10))),w=t.computed((()=>(f.value-v.value)/m.value)),S=t.toRef(a,"disabled"),k=t.computed((()=>a.error||a.disabled?void 0:a.thumbColor??a.color)),x=t.computed((()=>a.error||a.disabled?void 0:a.trackColor??a.color)),N=t.computed((()=>a.error||a.disabled?void 0:a.trackFillColor??a.color)),C=t.shallowRef(!1),_=t.shallowRef(0),I=t.ref(),P=t.ref()
+function B(e){const t="vertical"===a.direction,l=t?"top":"left",o=t?"height":"width",n=t?"clientY":"clientX",{[l]:r,[o]:i}=I.value?.$el.getBoundingClientRect(),u=function(e,t){return"touches"in e&&e.touches.length?e.touches[0][t]:"changedTouches"in e&&e.changedTouches.length?e.changedTouches[0][t]:e[t]}(e,n)
+let c=Math.min(Math.max((u-r-_.value)/i,0),1)||0
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+return R(isNaN(t)?0:t,0,100)},O=t.toRef(a,"showTicks"),L=t.computed((()=>O.value?a.ticks?Array.isArray(a.ticks)?a.ticks.map((e=>({value:e,position:M(e),label:e.toString()}))):Object.keys(a.ticks).map((e=>({value:parseFloat(e),position:M(parseFloat(e)),label:a.ticks[e]}))):w.value!==1/0?p(w.value+1).map((e=>{const t=v.value+e*m.value
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+return t.provide($s,j),j},js=gt({focused:Boolean,max:{type:Number,required:!0},min:{type:Number,required:!0},modelValue:{type:Number,required:!0},position:{type:Number,required:!0},ripple:{type:[Boolean,Object],default:!0},name:String,...ht()},"VSliderThumb"),Hs=It()({name:"VSliderThumb",directives:{Ripple:To},props:js(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l,emit:o}=a
+const n=t.inject($s),{isRtl:r,rtlClasses:i}=ba()
+if(!n)throw new Error("[Vuetify] v-slider-thumb must be used inside v-slider or v-range-slider")
+const{thumbColor:s,step:u,disabled:c,thumbSize:d,thumbLabel:v,direction:p,isReversed:m,vertical:g,readonly:h,elevation:y,mousePressed:V,decimals:w,indexFromEnd:S}=n,k=t.computed((()=>c.value?void 0:y.value)),{elevationClasses:x}=wl(k),{textColorClasses:N,textColorStyles:C}=sl(s),{pageup:_,pagedown:I,end:P,home:B,left:A,right:R,down:T,up:D}=b,E=[_,I,P,B,A,R,T,D],F=t.computed((()=>u.value?[1,2,3]:[1,5,10]))
+function $(t){const a=function(t,a){if(!E.includes(t.key))return
+t.preventDefault()
+const l=u.value||.1,o=(e.max-e.min)/l
+if([A,R,T,D].includes(t.key)){const e=(g.value?[r.value?A:R,m.value?T:D]:S.value!==r.value?[A,D]:[R,D]).includes(t.key)?1:-1,o=t.shiftKey?2:t.ctrlKey?1:0
+a+=e*l*F.value[o]}else t.key===B?a=e.min:t.key===P?a=e.max:a-=(t.key===I?1:-1)*l*(o>100?o/10:10)
+return Math.max(e.min,Math.min(e.max,a))}(t,e.modelValue)
+null!=a&&o("update:modelValue",a)}return $t((()=>{const a=f(S.value?100-e.position:e.position,"%")
+return t.createVNode("div",{class:["v-slider-thumb",{"v-slider-thumb--focused":e.focused,"v-slider-thumb--pressed":e.focused&&V.value},e.class,i.value],style:[{"--v-slider-thumb-position":a,"--v-slider-thumb-size":f(d.value)},e.style],role:"slider",tabindex:c.value?-1:0,"aria-label":e.name,"aria-valuemin":e.min,"aria-valuemax":e.max,"aria-valuenow":e.modelValue,"aria-readonly":!!h.value,"aria-orientation":p.value,onKeydown:h.value?void 0:$},[t.createVNode("div",{class:["v-slider-thumb__surface",N.value,x.value],style:{...C.value}},null),t.withDirectives(t.createVNode("div",{class:["v-slider-thumb__ripple",N.value],style:C.value},null),[[t.resolveDirective("ripple"),e.ripple,null,{circle:!0,center:!0}]]),t.createVNode(Wa,{origin:"bottom center"},{default:()=>[t.withDirectives(t.createVNode("div",{class:"v-slider-thumb__label-container"},[t.createVNode("div",{class:["v-slider-thumb__label"]},[t.createVNode("div",null,[l["thumb-label"]?.({modelValue:e.modelValue})??e.modelValue.toFixed(u.value?w.value:1)])])]),[[t.vShow,v.value&&e.focused||"always"===v.value]])]})])})),{}}}),Ws=gt({start:{type:Number,required:!0},stop:{type:Number,required:!0},...ht()},"VSliderTrack"),Us=It()({name:"VSliderTrack",props:Ws(),emits:{},setup(e,a){let{slots:l}=a
+const o=t.inject($s)
+if(!o)throw new Error("[Vuetify] v-slider-track must be inside v-slider or v-range-slider")
+const{color:n,parsedTicks:r,rounded:i,showTicks:s,tickSize:u,trackColor:c,trackFillColor:d,trackSize:v,vertical:p,min:m,max:g,indexFromEnd:h}=o,{roundedClasses:y}=dl(i),{backgroundColorClasses:b,backgroundColorStyles:V}=ul(d),{backgroundColorClasses:w,backgroundColorStyles:S}=ul(c),k=t.computed((()=>`inset-${p.value?"block":"inline"}-${h.value?"end":"start"}`)),x=t.computed((()=>p.value?"height":"width")),N=t.computed((()=>({[k.value]:"0%",[x.value]:"100%"}))),C=t.computed((()=>e.stop-e.start)),_=t.computed((()=>({[k.value]:f(e.start,"%"),[x.value]:f(C.value,"%")}))),I=t.computed((()=>{if(!s.value)return[]
+return(p.value?r.value.slice().reverse():r.value).map(((a,o)=>{const n=a.value!==m.value&&a.value!==g.value?f(a.position,"%"):void 0
+return t.createVNode("div",{key:a.value,class:["v-slider-track__tick",{"v-slider-track__tick--filled":a.position>=e.start&&a.position<=e.stop,"v-slider-track__tick--first":a.value===m.value,"v-slider-track__tick--last":a.value===g.value}],style:{[k.value]:n}},[(a.label||l["tick-label"])&&t.createVNode("div",{class:"v-slider-track__tick-label"},[l["tick-label"]?.({tick:a,index:o})??a.label])])}))}))
+return $t((()=>t.createVNode("div",{class:["v-slider-track",y.value,e.class],style:[{"--v-slider-track-size":f(v.value),"--v-slider-tick-size":f(u.value)},e.style]},[t.createVNode("div",{class:["v-slider-track__background",w.value,{"v-slider-track__background--opacity":!!n.value||!d.value}],style:{...N.value,...S.value}},null),t.createVNode("div",{class:["v-slider-track__fill",b.value],style:{..._.value,...V.value}},null),s.value&&t.createVNode("div",{class:["v-slider-track__ticks",{"v-slider-track__ticks--always-show":"always"===s.value}]},[I.value])]))),{}}}),Ys=gt({...on(),...Os(),...vn(),modelValue:{type:[Number,String],default:0}},"VSlider"),Gs=It()({name:"VSlider",props:Ys(),emits:{"update:focused":e=>!0,"update:modelValue":e=>!0,start:e=>!0,end:e=>!0},setup(e,a){let{slots:l,emit:o}=a
+const n=t.ref(),{rtlClasses:r}=ba(),i=Ls(e),s=ia(e,"modelValue",void 0,(e=>i.roundValue(null==e?i.min.value:e))),{min:u,max:c,mousePressed:d,roundValue:v,onSliderMousedown:p,onSliderTouchstart:f,trackContainerRef:m,position:g,hasLabels:h,readonly:y}=zs({props:e,steps:i,onSliderStart:()=>{o("start",s.value)},onSliderEnd:e=>{let{value:t}=e
+const a=v(t)
+s.value=a,o("end",a)},onSliderMove:e=>{let{value:t}=e
+return s.value=v(t)},getActiveThumb:()=>n.value?.$el}),{isFocused:b,focus:V,blur:w}=nn(e),S=t.computed((()=>g(s.value)))
+return $t((()=>{const a=pn.filterProps(e),o=!!(e.label||l.label||l.prepend)
+return t.createVNode(pn,t.mergeProps({class:["v-slider",{"v-slider--has-labels":!!l["tick-label"]||h.value,"v-slider--focused":b.value,"v-slider--pressed":d.value,"v-slider--disabled":e.disabled},r.value,e.class],style:e.style},a,{focused:b.value}),{...l,prepend:o?a=>t.createVNode(t.Fragment,null,[l.label?.(a)??(e.label?t.createVNode(Yo,{id:a.id.value,class:"v-slider__label",text:e.label},null):void 0),l.prepend?.(a)]):void 0,default:a=>{let{id:o,messagesId:r}=a
+return t.createVNode("div",{class:"v-slider__container",onMousedown:y.value?void 0:p,onTouchstartPassive:y.value?void 0:f},[t.createVNode("input",{id:o.value,name:e.name||o.value,disabled:!!e.disabled,readonly:!!e.readonly,tabindex:"-1",value:s.value},null),t.createVNode(Us,{ref:m,start:0,stop:S.value},{"tick-label":l["tick-label"]}),t.createVNode(Hs,{ref:n,"aria-describedby":r.value,focused:b.value,min:u.value,max:c.value,modelValue:s.value,"onUpdate:modelValue":e=>s.value=e,position:S.value,elevation:e.elevation,onFocus:V,onBlur:w,ripple:e.ripple,name:e.name},{"thumb-label":l["thumb-label"]})])}})})),{}}}),qs=_t({name:"VColorPickerPreview",props:gt({color:{type:Object},disabled:Boolean,hideAlpha:Boolean,...ht()},"VColorPickerPreview")(),emits:{"update:color":e=>!0},setup(e,a){let{emit:l}=a
+const o=new AbortController
+async function r(){if(!n)return
+const t=new window.EyeDropper
+try{const a=at(Je((await t.open({signal:o.signal})).sRGBHex))
+l("update:color",{...e.color??Bs,...a})}catch(e){}}return t.onUnmounted((()=>o.abort())),$t((()=>t.createVNode("div",{class:["v-color-picker-preview",{"v-color-picker-preview--hide-alpha":e.hideAlpha},e.class],style:e.style},[n&&t.createVNode("div",{class:"v-color-picker-preview__eye-dropper",key:"eyeDropper"},[t.createVNode(Eo,{onClick:r,icon:"$eyeDropper",variant:"plain",density:"comfortable"},null)]),t.createVNode("div",{class:"v-color-picker-preview__dot"},[t.createVNode("div",{style:{background:rt(e.color??Bs)}},null)]),t.createVNode("div",{class:"v-color-picker-preview__sliders"},[t.createVNode(Gs,{class:"v-color-picker-preview__track v-color-picker-preview__hue",modelValue:e.color?.h,"onUpdate:modelValue":t=>l("update:color",{...e.color??Bs,h:t}),step:0,min:0,max:360,disabled:e.disabled,thumbSize:14,trackSize:8,trackFillColor:"white",hideDetails:!0},null),!e.hideAlpha&&t.createVNode(Gs,{class:"v-color-picker-preview__track v-color-picker-preview__alpha",modelValue:e.color?.a??1,"onUpdate:modelValue":t=>l("update:color",{...e.color??Bs,a:t}),step:1/256,min:0,max:1,disabled:e.disabled,thumbSize:14,trackSize:8,trackFillColor:"white",hideDetails:!0},null)])]))),{}}})
+var Ks={red:{base:"#f44336",lighten5:"#ffebee",lighten4:"#ffcdd2",lighten3:"#ef9a9a",lighten2:"#e57373",lighten1:"#ef5350",darken1:"#e53935",darken2:"#d32f2f",darken3:"#c62828",darken4:"#b71c1c",accent1:"#ff8a80",accent2:"#ff5252",accent3:"#ff1744",accent4:"#d50000"},pink:{base:"#e91e63",lighten5:"#fce4ec",lighten4:"#f8bbd0",lighten3:"#f48fb1",lighten2:"#f06292",lighten1:"#ec407a",darken1:"#d81b60",darken2:"#c2185b",darken3:"#ad1457",darken4:"#880e4f",accent1:"#ff80ab",accent2:"#ff4081",accent3:"#f50057",accent4:"#c51162"},purple:{base:"#9c27b0",lighten5:"#f3e5f5",lighten4:"#e1bee7",lighten3:"#ce93d8",lighten2:"#ba68c8",lighten1:"#ab47bc",darken1:"#8e24aa",darken2:"#7b1fa2",darken3:"#6a1b9a",darken4:"#4a148c",accent1:"#ea80fc",accent2:"#e040fb",accent3:"#d500f9",accent4:"#aa00ff"},deepPurple:{base:"#673ab7",lighten5:"#ede7f6",lighten4:"#d1c4e9",lighten3:"#b39ddb",lighten2:"#9575cd",lighten1:"#7e57c2",darken1:"#5e35b1",darken2:"#512da8",darken3:"#4527a0",darken4:"#311b92",accent1:"#b388ff",accent2:"#7c4dff",accent3:"#651fff",accent4:"#6200ea"},indigo:{base:"#3f51b5",lighten5:"#e8eaf6",lighten4:"#c5cae9",lighten3:"#9fa8da",lighten2:"#7986cb",lighten1:"#5c6bc0",darken1:"#3949ab",darken2:"#303f9f",darken3:"#283593",darken4:"#1a237e",accent1:"#8c9eff",accent2:"#536dfe",accent3:"#3d5afe",accent4:"#304ffe"},blue:{base:"#2196f3",lighten5:"#e3f2fd",lighten4:"#bbdefb",lighten3:"#90caf9",lighten2:"#64b5f6",lighten1:"#42a5f5",darken1:"#1e88e5",darken2:"#1976d2",darken3:"#1565c0",darken4:"#0d47a1",accent1:"#82b1ff",accent2:"#448aff",accent3:"#2979ff",accent4:"#2962ff"},lightBlue:{base:"#03a9f4",lighten5:"#e1f5fe",lighten4:"#b3e5fc",lighten3:"#81d4fa",lighten2:"#4fc3f7",lighten1:"#29b6f6",darken1:"#039be5",darken2:"#0288d1",darken3:"#0277bd",darken4:"#01579b",accent1:"#80d8ff",accent2:"#40c4ff",accent3:"#00b0ff",accent4:"#0091ea"},cyan:{base:"#00bcd4",lighten5:"#e0f7fa",lighten4:"#b2ebf2",lighten3:"#80deea",lighten2:"#4dd0e1",lighten1:"#26c6da",darken1:"#00acc1",darken2:"#0097a7",darken3:"#00838f",darken4:"#006064",accent1:"#84ffff",accent2:"#18ffff",accent3:"#00e5ff",accent4:"#00b8d4"},teal:{base:"#009688",lighten5:"#e0f2f1",lighten4:"#b2dfdb",lighten3:"#80cbc4",lighten2:"#4db6ac",lighten1:"#26a69a",darken1:"#00897b",darken2:"#00796b",darken3:"#00695c",darken4:"#004d40",accent1:"#a7ffeb",accent2:"#64ffda",accent3:"#1de9b6",accent4:"#00bfa5"},green:{base:"#4caf50",lighten5:"#e8f5e9",lighten4:"#c8e6c9",lighten3:"#a5d6a7",lighten2:"#81c784",lighten1:"#66bb6a",darken1:"#43a047",darken2:"#388e3c",darken3:"#2e7d32",darken4:"#1b5e20",accent1:"#b9f6ca",accent2:"#69f0ae",accent3:"#00e676",accent4:"#00c853"},lightGreen:{base:"#8bc34a",lighten5:"#f1f8e9",lighten4:"#dcedc8",lighten3:"#c5e1a5",lighten2:"#aed581",lighten1:"#9ccc65",darken1:"#7cb342",darken2:"#689f38",darken3:"#558b2f",darken4:"#33691e",accent1:"#ccff90",accent2:"#b2ff59",accent3:"#76ff03",accent4:"#64dd17"},lime:{base:"#cddc39",lighten5:"#f9fbe7",lighten4:"#f0f4c3",lighten3:"#e6ee9c",lighten2:"#dce775",lighten1:"#d4e157",darken1:"#c0ca33",darken2:"#afb42b",darken3:"#9e9d24",darken4:"#827717",accent1:"#f4ff81",accent2:"#eeff41",accent3:"#c6ff00",accent4:"#aeea00"},yellow:{base:"#ffeb3b",lighten5:"#fffde7",lighten4:"#fff9c4",lighten3:"#fff59d",lighten2:"#fff176",lighten1:"#ffee58",darken1:"#fdd835",darken2:"#fbc02d",darken3:"#f9a825",darken4:"#f57f17",accent1:"#ffff8d",accent2:"#ffff00",accent3:"#ffea00",accent4:"#ffd600"},amber:{base:"#ffc107",lighten5:"#fff8e1",lighten4:"#ffecb3",lighten3:"#ffe082",lighten2:"#ffd54f",lighten1:"#ffca28",darken1:"#ffb300",darken2:"#ffa000",darken3:"#ff8f00",darken4:"#ff6f00",accent1:"#ffe57f",accent2:"#ffd740",accent3:"#ffc400",accent4:"#ffab00"},orange:{base:"#ff9800",lighten5:"#fff3e0",lighten4:"#ffe0b2",lighten3:"#ffcc80",lighten2:"#ffb74d",lighten1:"#ffa726",darken1:"#fb8c00",darken2:"#f57c00",darken3:"#ef6c00",darken4:"#e65100",accent1:"#ffd180",accent2:"#ffab40",accent3:"#ff9100",accent4:"#ff6d00"},deepOrange:{base:"#ff5722",lighten5:"#fbe9e7",lighten4:"#ffccbc",lighten3:"#ffab91",lighten2:"#ff8a65",lighten1:"#ff7043",darken1:"#f4511e",darken2:"#e64a19",darken3:"#d84315",darken4:"#bf360c",accent1:"#ff9e80",accent2:"#ff6e40",accent3:"#ff3d00",accent4:"#dd2c00"},brown:{base:"#795548",lighten5:"#efebe9",lighten4:"#d7ccc8",lighten3:"#bcaaa4",lighten2:"#a1887f",lighten1:"#8d6e63",darken1:"#6d4c41",darken2:"#5d4037",darken3:"#4e342e",darken4:"#3e2723"},blueGrey:{base:"#607d8b",lighten5:"#eceff1",lighten4:"#cfd8dc",lighten3:"#b0bec5",lighten2:"#90a4ae",lighten1:"#78909c",darken1:"#546e7a",darken2:"#455a64",darken3:"#37474f",darken4:"#263238"},grey:{base:"#9e9e9e",lighten5:"#fafafa",lighten4:"#f5f5f5",lighten3:"#eeeeee",lighten2:"#e0e0e0",lighten1:"#bdbdbd",darken1:"#757575",darken2:"#616161",darken3:"#424242",darken4:"#212121"},shades:{black:"#000000",white:"#ffffff",transparent:"#ffffff00"}}
+const Xs=gt({swatches:{type:Array,default:()=>function(e){return Object.keys(e).map((t=>{const a=e[t]
+return a.base?[a.base,a.darken4,a.darken3,a.darken2,a.darken1,a.lighten1,a.lighten2,a.lighten3,a.lighten4,a.lighten5]:[a.black,a.white,a.transparent]}))}(Ks)},disabled:Boolean,color:Object,maxHeight:[Number,String],...ht()},"VColorPickerSwatches")
+const Zs=_t({name:"VColorPickerSwatches",props:Xs(),emits:{"update:color":e=>!0},setup(e,a){let{emit:l}=a
+return $t((()=>t.createVNode("div",{class:["v-color-picker-swatches",e.class],style:[{maxHeight:f(e.maxHeight)},e.style]},[t.createVNode("div",null,[e.swatches.map((a=>t.createVNode("div",{class:"v-color-picker-swatches__swatch"},[a.map((a=>{const o=Je(a),n=at(o),r=nt(o)
+return t.createVNode("div",{class:"v-color-picker-swatches__color",onClick:()=>n&&l("update:color",n)},[t.createVNode("div",{style:{background:r}},[e.color&&c(e.color,n)?t.createVNode(Xl,{size:"x-small",icon:"$success",color:ft(a,"#FFFFFF")>2?"white":"black"},null):void 0])])}))])))])]))),{}}}),Qs=gt({color:String,...yl(),...ht(),...ll(),...Vl(),...to(),...uo(),...cl(),...Pa(),...wa()},"VSheet"),Js=It()({name:"VSheet",props:Qs(),setup(e,a){let{slots:l}=a
+const{themeClasses:o}=ka(e),{backgroundColorClasses:n,backgroundColorStyles:r}=ul(t.toRef(e,"color")),{borderClasses:i}=bl(e),{dimensionStyles:s}=ol(e),{elevationClasses:u}=wl(e),{locationStyles:c}=ao(e),{positionClasses:d}=co(e),{roundedClasses:v}=dl(e)
+return $t((()=>t.createVNode(e.tag,{class:["v-sheet",o.value,n.value,i.value,u.value,d.value,v.value,e.class],style:[r.value,s.value,c.value,e.style]},l))),{}}}),eu=_t({name:"VColorPicker",props:gt({canvasHeight:{type:[String,Number],default:150},disabled:Boolean,dotSize:{type:[Number,String],default:10},hideCanvas:Boolean,hideSliders:Boolean,hideInputs:Boolean,mode:{type:String,default:"rgba",validator:e=>Object.keys(Ds).includes(e)},modes:{type:Array,default:()=>Object.keys(Ds),validator:e=>Array.isArray(e)&&e.every((e=>Object.keys(Ds).includes(e)))},showSwatches:Boolean,swatches:Array,swatchesMaxHeight:{type:[Number,String],default:150},modelValue:{type:[Object,String]},...x(Qs({width:300}),["height","location","minHeight","maxHeight","minWidth","maxWidth"])},"VColorPicker")(),emits:{"update:modelValue":e=>!0,"update:mode":e=>!0},setup(e){const a=ia(e,"mode"),l=t.ref(null),o=ia(e,"modelValue",void 0,(e=>{if(null==e||""===e)return null
+let t
+try{t=at(Je(e))}catch(e){return $e(e),null}return t}),(t=>t?function(e,t){if(null==t||"string"==typeof t){const t=ct(e)
+return 1===e.a?t.slice(0,7):t}if("object"==typeof t){let a
+return w(t,["r","g","b"])?a=et(e):w(t,["h","s","l"])?a=lt(e):w(t,["h","s","v"])&&(a=e),function(e,t){if(t){const{a:t,...a}=e
+return a}return e}(a,!w(t,["a"])&&1===e.a)}return e}(t,e.modelValue):null)),n=t.computed((()=>o.value?{...o.value,h:l.value??o.value.h}:null)),{rtlClasses:r}=ba()
+let i=!0
+t.watch(o,(e=>{i?e&&(l.value=e.h):i=!0}),{immediate:!0})
+const s=e=>{i=!1,l.value=e.h,o.value=e}
+return t.onBeforeMount((()=>{e.modes.includes(a.value)||(a.value=e.modes[0])})),Nt({VSlider:{color:void 0,trackColor:void 0,trackFillColor:void 0}}),$t((()=>{const l=Js.filterProps(e)
+return t.createVNode(Js,t.mergeProps({rounded:e.rounded,elevation:e.elevation,theme:e.theme,class:["v-color-picker",r.value,e.class],style:[{"--v-color-picker-color-hsv":rt({...n.value??Bs,a:1})},e.style]},l,{maxWidth:e.width}),{default:()=>[!e.hideCanvas&&t.createVNode(Ps,{key:"canvas",color:n.value,"onUpdate:color":s,disabled:e.disabled,dotSize:e.dotSize,width:e.width,height:e.canvasHeight},null),(!e.hideSliders||!e.hideInputs)&&t.createVNode("div",{key:"controls",class:"v-color-picker__controls"},[!e.hideSliders&&t.createVNode(qs,{key:"preview",color:n.value,"onUpdate:color":s,hideAlpha:!a.value.endsWith("a"),disabled:e.disabled},null),!e.hideInputs&&t.createVNode(Fs,{key:"edit",modes:e.modes,mode:a.value,"onUpdate:mode":e=>a.value=e,color:n.value,"onUpdate:color":s,disabled:e.disabled},null)]),e.showSwatches&&t.createVNode(Zs,{key:"swatches",color:n.value,"onUpdate:color":s,maxHeight:e.swatchesMaxHeight,swatches:e.swatches,disabled:e.disabled},null)]})})),{}}})
+const tu=gt({autoSelectFirst:{type:[Boolean,String]},clearOnSelect:{type:Boolean,default:!0},delimiters:Array,...Fi({filterKeys:["title"]}),...Ri({hideNoData:!0,returnObject:!0}),...x(ki({modelValue:null,role:"combobox"}),["validationValue","dirty","appendInnerIcon"]),...vl({transition:!1})},"VCombobox"),au=It()({name:"VCombobox",props:tu(),emits:{"update:focused":e=>!0,"update:modelValue":e=>!0,"update:search":e=>!0,"update:menu":e=>!0},setup(e,l){let{emit:o,slots:n}=l
+const{t:r}=ha(),i=t.ref(),s=t.shallowRef(!1),u=t.shallowRef(!0),c=t.shallowRef(!1),d=t.ref(),v=t.ref(),p=ia(e,"menu"),f=t.computed({get:()=>p.value,set:e=>{p.value&&!e&&d.value?.ΨopenChildren.size||(p.value=e)}}),m=t.shallowRef(-1)
+let g=!1
+const h=t.computed((()=>i.value?.color)),y=t.computed((()=>f.value?e.closeText:e.openText)),{items:b,transformIn:V,transformOut:w}=Vr(e),{textColorClasses:S,textColorStyles:k}=sl(h),x=ia(e,"modelValue",[],(e=>V(A(e))),(t=>{const a=w(t)
+return e.multiple?a:a[0]??null})),N=un(e),C=t.computed((()=>!(!e.chips&&!n.chip))),_=t.computed((()=>C.value||!!n.selection)),I=t.shallowRef(e.multiple||_.value?"":x.value[0]?.title??""),B=t.computed({get:()=>I.value,set:t=>{if(I.value=t??"",e.multiple||_.value||(x.value=[yr(e,t)]),t&&e.multiple&&e.delimiters?.length){const a=t.split(new RegExp(`(?:${e.delimiters.join("|")})+`))
+a.length>1&&(a.forEach((t=>{(t=t.trim())&&q(yr(e,t))})),I.value="")}t||(m.value=-1),u.value=!t}}),R=t.computed((()=>"function"==typeof e.counterValue?e.counterValue(x.value):"number"==typeof e.counterValue?e.counterValue:e.multiple?x.value.length:B.value.length))
+t.watch(I,(e=>{g?t.nextTick((()=>g=!1)):s.value&&!f.value&&(f.value=!0),o("update:search",e)})),t.watch(x,(t=>{e.multiple||_.value||(I.value=t[0]?.title??"")}))
+const{filteredItems:T,getMatches:D}=$i(e,b,(()=>u.value?"":B.value)),E=t.computed((()=>e.hideSelected?T.value.filter((e=>!x.value.some((t=>t.value===e.value)))):T.value)),F=t.computed((()=>x.value.map((e=>e.value)))),$=t.computed((()=>(!0===e.autoSelectFirst||"exact"===e.autoSelectFirst&&B.value===E.value[0]?.title)&&E.value.length>0&&!u.value&&!c.value)),M=t.computed((()=>e.hideNoData&&!E.value.length||N.isReadonly.value||N.isDisabled.value)),O=t.ref(),L=Ai(O,i)
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+if(["Enter","ArrowDown","ArrowUp"].includes(t.key)&&t.preventDefault(),["Enter","ArrowDown"].includes(t.key)&&(f.value=!0),["Escape"].includes(t.key)&&(f.value=!1),["Enter","Escape","Tab"].includes(t.key)&&($.value&&["Enter","Tab"].includes(t.key)&&!x.value.some((e=>{let{value:t}=e
+return t===E.value[0].value}))&&q(T.value[0]),u.value=!0),"ArrowDown"===t.key&&$.value&&O.value?.focus("next"),"Enter"===t.key&&B.value&&(q(yr(e,B.value)),_.value&&(I.value="")),["Backspace","Delete"].includes(t.key)){if(!e.multiple&&_.value&&x.value.length>0&&!B.value)return q(x.value[0],!1)
+if(~m.value){t.preventDefault()
+const e=m.value
+q(x.value[m.value],!1),m.value=e>=l-1?l-2:e}else"Backspace"!==t.key||B.value||(m.value=l-1)}else if(e.multiple)if("ArrowLeft"===t.key){if(m.value<0&&a>0)return
+const e=m.value>-1?m.value-1:l-1
+x.value[e]?m.value=e:(m.value=-1,i.value.setSelectionRange(B.value.length,B.value.length))}else if("ArrowRight"===t.key){if(m.value<0)return
+const e=m.value+1
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+if(a&&!a.props.disabled)if(e.multiple){const t=x.value.findIndex((t=>e.valueComparator(t.value,a.value))),o=null==l?!~t:l
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+if(!_.value)return
+x.value.some((e=>{let{title:t}=e
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+function g(t,a){if(e.sticky||t.fixed)return{position:"sticky",left:t.fixed?f(t.fixedOffset):void 0,top:e.sticky?`calc(var(--v-table-header-height) * ${a})`:void 0}}function h(t){const a=r.value.find((e=>e.key===t.key))
+return a?"asc"===a.order?e.sortAscIcon:e.sortDescIcon:e.sortAscIcon}const{backgroundColorClasses:y,backgroundColorStyles:b}=ul(e,"color"),{displayClasses:V,mobile:w}=xn(e),S=t.computed((()=>({headers:p.value,columns:v.value,toggleSort:n,isSorted:i,sortBy:r.value,someSelected:s.value,allSelected:u.value,selectAll:c,getSortIcon:h}))),k=t.computed((()=>["v-data-table__th",{"v-data-table__th--sticky":e.sticky},V.value,m.value])),x=a=>{let{column:o,x:v,y:p}=a
+const m="data-table-select"===o.key||"data-table-expand"===o.key,V=t.mergeProps(e.headerProps??{},o.headerProps??{})
+return t.createVNode(rc,t.mergeProps({tag:"th",align:o.align,class:[{"v-data-table__th--sortable":o.sortable&&!e.disableSort,"v-data-table__th--sorted":i(o),"v-data-table__th--fixed":o.fixed},...k.value],style:{width:f(o.width),minWidth:f(o.minWidth),maxWidth:f(o.maxWidth),...g(o,p)},colspan:o.colspan,rowspan:o.rowspan,onClick:o.sortable?()=>n(o):void 0,fixed:o.fixed,nowrap:o.nowrap,lastFixed:o.lastFixed,noPadding:m},V),{default:()=>{const a=`header.${o.key}`,v={column:o,selectAll:c,isSorted:i,toggleSort:n,sortBy:r.value,someSelected:s.value,allSelected:u.value,getSortIcon:h}
+return l[a]?l[a](v):"data-table-select"===o.key?l["header.data-table-select"]?.(v)??(d.value&&t.createVNode(en,{modelValue:u.value,indeterminate:s.value&&!u.value,"onUpdate:modelValue":c},null)):t.createVNode("div",{class:"v-data-table-header__content"},[t.createVNode("span",null,[o.title]),o.sortable&&!e.disableSort&&t.createVNode(Xl,{key:"icon",class:"v-data-table-header__sort-icon",icon:h(o)},null),e.multiSort&&i(o)&&t.createVNode("div",{key:"badge",class:["v-data-table-header__sort-badge",...y.value],style:b.value},[r.value.findIndex((e=>e.key===o.key))+1])])}})},N=()=>{const a=t.mergeProps(e.headerProps??{}??{}),d=t.computed((()=>v.value.filter((t=>t?.sortable&&!e.disableSort)))),f=t.computed((()=>{if(null!=v.value.find((e=>"data-table-select"===e.key)))return u.value?"$checkboxOn":s.value?"$checkboxIndeterminate":"$checkboxOff"}))
+return t.createVNode(rc,t.mergeProps({tag:"th",class:[...k.value],colspan:p.value.length+1},a),{default:()=>[t.createVNode("div",{class:"v-data-table-header__content"},[t.createVNode(Di,{chips:!0,class:"v-data-table__td-sort-select",clearable:!0,density:"default",items:d.value,label:o("$vuetify.dataTable.sortBy"),multiple:e.multiSort,variant:"underlined","onClick:clear":()=>r.value=[],appendIcon:f.value,"onClick:append":()=>c(!u.value)},{...l,chip:e=>t.createVNode(zn,{onClick:e.item.raw?.sortable?()=>n(e.item.raw):void 0,onMousedown:e=>{e.preventDefault(),e.stopPropagation()}},{default:()=>[e.item.title,t.createVNode(Xl,{class:["v-data-table__td-sort-icon",i(e.item.raw)&&"v-data-table__td-sort-icon-active"],icon:h(e.item.raw),size:"small"},null)]})})])]})}
+$t((()=>w.value?t.createVNode("tr",null,[t.createVNode(N,null,null)]):t.createVNode(t.Fragment,null,[l.headers?l.headers(S.value):p.value.map(((e,a)=>t.createVNode("tr",null,[e.map(((e,l)=>t.createVNode(x,{column:e,x:l,y:a},null)))]))),e.loading&&t.createVNode("tr",{class:"v-data-table-progress"},[t.createVNode("th",{colspan:v.value.length},[t.createVNode(io,{name:"v-data-table-progress",absolute:!0,active:!0,color:"boolean"==typeof e.loading?void 0:e.loading,indeterminate:!0},{default:l.loader})])])])))}}),kc=gt({item:{type:Object,required:!0}},"VDataTableGroupHeaderRow"),xc=It()({name:"VDataTableGroupHeaderRow",props:kc(),setup(e,a){let{slots:l}=a
+const{isGroupOpen:o,toggleGroup:n,extractRows:r}=Iu(),{isSelected:i,isSomeSelected:s,select:u}=Wu(),{columns:c}=Vc(),d=t.computed((()=>r([e.item])))
+return()=>t.createVNode("tr",{class:"v-data-table-group-header-row",style:{"--v-data-table-group-header-row-depth":e.item.depth}},[c.value.map((a=>{if("data-table-group"===a.key){const a=o(e.item)?"$expand":"$next",r=()=>n(e.item)
+return l["data-table-group"]?.({item:e.item,count:d.value.length,props:{icon:a,onClick:r}})??t.createVNode(rc,{class:"v-data-table-group-header-row__column"},{default:()=>[t.createVNode(Eo,{size:"small",variant:"text",icon:a,onClick:r},null),t.createVNode("span",null,[e.item.value]),t.createVNode("span",null,[t.createTextVNode("("),d.value.length,t.createTextVNode(")")])]})}if("data-table-select"===a.key){const e=i(d.value),a=s(d.value)&&!e,o=e=>u(d.value,e)
+return l["data-table-select"]?.({props:{modelValue:e,indeterminate:a,"onUpdate:modelValue":o}})??t.createVNode("td",null,[t.createVNode(en,{modelValue:e,indeterminate:a,"onUpdate:modelValue":o},null)])}return t.createVNode("td",null,null)}))])}}),Nc=gt({index:Number,item:Object,cellProps:[Object,Function],onClick:G(),onContextmenu:G(),onDblclick:G(),...kn()},"VDataTableRow"),Cc=It()({name:"VDataTableRow",props:Nc(),setup(e,a){let{slots:l}=a
+const{displayClasses:o,mobile:n}=xn(e,"v-data-table__tr"),{isSelected:r,toggleSelect:i,someSelected:s,allSelected:u,selectAll:c}=Wu(),{isExpanded:v,toggleExpand:p}=ku(),{toggleSort:f,sortBy:m,isSorted:g}=Ku(),{columns:h}=Vc()
+$t((()=>t.createVNode("tr",{class:["v-data-table__tr",{"v-data-table__tr--clickable":!!(e.onClick||e.onContextmenu||e.onDblclick)},o.value],onClick:e.onClick,onContextmenu:e.onContextmenu,onDblclick:e.onDblclick},[e.item&&h.value.map(((a,o)=>{const h=e.item,y=`item.${a.key}`,b=`header.${a.key}`,V={index:e.index,item:h.raw,internalItem:h,value:d(h.columns,a.key),column:a,isSelected:r,toggleSelect:i,isExpanded:v,toggleExpand:p},w={column:a,selectAll:c,isSorted:g,toggleSort:f,sortBy:m.value,someSelected:s.value,allSelected:u.value,getSortIcon:()=>""},S="function"==typeof e.cellProps?e.cellProps({index:V.index,item:V.item,internalItem:V.internalItem,value:V.value,column:a}):e.cellProps,k="function"==typeof a.cellProps?a.cellProps({index:V.index,item:V.item,internalItem:V.internalItem,value:V.value}):a.cellProps
+return t.createVNode(rc,t.mergeProps({align:a.align,class:{"v-data-table__td--expanded-row":"data-table-expand"===a.key,"v-data-table__td--select-row":"data-table-select"===a.key},fixed:a.fixed,fixedOffset:a.fixedOffset,lastFixed:a.lastFixed,maxWidth:n.value?void 0:a.maxWidth,noPadding:"data-table-select"===a.key||"data-table-expand"===a.key,nowrap:a.nowrap,width:n.value?void 0:a.width},S,k),{default:()=>{if(l[y]&&!n.value)return l[y]?.(V)
+if("data-table-select"===a.key)return l["item.data-table-select"]?.(V)??t.createVNode(en,{disabled:!h.selectable,modelValue:r([h]),onClick:t.withModifiers((()=>i(h)),["stop"])},null)
+if("data-table-expand"===a.key)return l["item.data-table-expand"]?.(V)??t.createVNode(Eo,{icon:v(h)?"$collapse":"$expand",size:"small",variant:"text",onClick:t.withModifiers((()=>p(h)),["stop"])},null)
+const e=t.toDisplayString(V.value)
+return n.value?t.createVNode(t.Fragment,null,[t.createVNode("div",{class:"v-data-table__td-title"},[l[b]?.(w)??a.title]),t.createVNode("div",{class:"v-data-table__td-value"},[l[y]?.(V)??e])]):e}})}))])))}}),_c=gt({loading:[Boolean,String],loadingText:{type:String,default:"$vuetify.dataIterator.loadingText"},hideNoData:Boolean,items:{type:Array,default:()=>[]},noDataText:{type:String,default:"$vuetify.noDataText"},rowProps:[Object,Function],cellProps:[Object,Function],...kn()},"VDataTableRows"),Ic=It()({name:"VDataTableRows",inheritAttrs:!1,props:_c(),setup(e,a){let{attrs:l,slots:o}=a
+const{columns:n}=Vc(),{expandOnClick:r,toggleExpand:i,isExpanded:s}=ku(),{isSelected:u,toggleSelect:c}=Wu(),{toggleGroup:d,isGroupOpen:v}=Iu(),{t:p}=ha(),{mobile:f}=xn(e)
+return $t((()=>!e.loading||e.items.length&&!o.loading?e.loading||e.items.length||e.hideNoData?t.createVNode(t.Fragment,null,[e.items.map(((a,p)=>{if("group"===a.type){const e={index:p,item:a,columns:n.value,isExpanded:s,toggleExpand:i,isSelected:u,toggleSelect:c,toggleGroup:d,isGroupOpen:v}
+return o["group-header"]?o["group-header"](e):t.createVNode(xc,t.mergeProps({key:`group-header_${a.id}`,item:a},Rt(l,":group-header",(()=>e))),o)}const m={index:p,item:a.raw,internalItem:a,columns:n.value,isExpanded:s,toggleExpand:i,isSelected:u,toggleSelect:c},g={...m,props:t.mergeProps({key:`item_${a.key??a.index}`,onClick:r.value?()=>{i(a)}:void 0,index:p,item:a,cellProps:e.cellProps,mobile:f.value},Rt(l,":row",(()=>m)),"function"==typeof e.rowProps?e.rowProps({item:m.item,index:m.index,internalItem:m.internalItem}):e.rowProps)}
+return t.createVNode(t.Fragment,{key:g.props.key},[o.item?o.item(g):t.createVNode(Cc,g.props,o),s(a)&&o["expanded-row"]?.(m)])}))]):t.createVNode("tr",{class:"v-data-table-rows-no-data",key:"no-data"},[t.createVNode("td",{colspan:n.value.length},[o["no-data"]?.()??p(e.noDataText)])]):t.createVNode("tr",{class:"v-data-table-rows-loading",key:"loading"},[t.createVNode("td",{colspan:n.value.length},[o.loading?.()??p(e.loadingText)])]))),{}}}),Pc=gt({fixedHeader:Boolean,fixedFooter:Boolean,height:[Number,String],hover:Boolean,...ht(),...Bl(),...Pa(),...wa()},"VTable"),Bc=It()({name:"VTable",props:Pc(),setup(e,a){let{slots:l,emit:o}=a
+const{themeClasses:n}=ka(e),{densityClasses:r}=Al(e)
+return $t((()=>t.createVNode(e.tag,{class:["v-table",{"v-table--fixed-height":!!e.height,"v-table--fixed-header":e.fixedHeader,"v-table--fixed-footer":e.fixedFooter,"v-table--has-top":!!l.top,"v-table--has-bottom":!!l.bottom,"v-table--hover":e.hover},n.value,r.value,e.class],style:e.style},{default:()=>[l.top?.(),l.default?t.createVNode("div",{class:"v-table__wrapper",style:{height:f(e.height)}},[t.createVNode("table",null,[l.default()])]):l.wrapper?.(),l.bottom?.()]}))),{}}}),Ac=gt({items:{type:Array,default:()=>[]},itemValue:{type:[String,Array,Function],default:"id"},itemSelectable:{type:[String,Array,Function],default:null},rowProps:[Object,Function],cellProps:[Object,Function],returnObject:Boolean},"DataTable-items")
+function Rc(e,t,a){return t.map(((t,l)=>function(e,t,a,l){const o=e.returnObject?t:v(t,e.itemValue),n=v(t,e.itemSelectable,!0),r=l.reduce(((e,a)=>(null!=a.key&&(e[a.key]=v(t,a.value)),e)),{})
+return{type:"item",key:e.returnObject?v(t,e.itemValue):o,index:a,value:o,selectable:n,columns:r,raw:t}}(e,t,l,a)))}function Tc(e,a){return{items:t.computed((()=>Rc(e,e.items,a.value)))}}const Dc=gt({..._c(),hideDefaultBody:Boolean,hideDefaultFooter:Boolean,hideDefaultHeader:Boolean,width:[String,Number],search:String,...Vu(),...xu(),...uc(),...Ac(),...zu(),...Uu(),...wc(),...Pc()},"DataTable"),Ec=gt({...Tu(),...Dc(),...Fi(),...oc()},"VDataTable"),Fc=It()({name:"VDataTable",props:Ec(),emits:{"update:modelValue":e=>!0,"update:page":e=>!0,"update:itemsPerPage":e=>!0,"update:sortBy":e=>!0,"update:options":e=>!0,"update:groupBy":e=>!0,"update:expanded":e=>!0,"update:currentItems":e=>!0},setup(e,a){let{attrs:l,slots:o}=a
+const{groupBy:n}=Cu(e),{sortBy:r,multiSort:i,mustSort:s}=Gu(e),{page:u,itemsPerPage:c}=Eu(e),{disableSort:d}=t.toRefs(e),{columns:v,headers:p,sortFunctions:f,sortRawFunctions:m,filterFunctions:g}=bc(e,{groupBy:n,showSelect:t.toRef(e,"showSelect"),showExpand:t.toRef(e,"showExpand")}),{items:h}=Tc(e,v),y=t.toRef(e,"search"),{filteredItems:b}=$i(e,h,y,{transform:e=>e.columns,customKeyFilter:g}),{toggleSort:V}=qu({sortBy:r,multiSort:i,mustSort:s,page:u}),{sortByWithGroups:w,opened:S,extractRows:k,isGroupOpen:x,toggleGroup:N}=_u({groupBy:n,sortBy:r,disableSort:d}),{sortedItems:C}=Xu(e,b,w,{transform:e=>({...e.raw,...e.columns}),sortFunctions:f,sortRawFunctions:m}),{flatItems:_}=Au(C,n,S),I=t.computed((()=>_.value.length)),{startIndex:P,stopIndex:B,pageCount:A,setItemsPerPage:R}=Fu({page:u,itemsPerPage:c,itemsLength:I}),{paginatedItems:T}=$u({items:_,startIndex:P,stopIndex:B,itemsPerPage:c}),D=t.computed((()=>k(T.value))),{isSelected:E,select:F,selectAll:$,toggleSelect:M,someSelected:O,allSelected:L}=Hu(e,{allItems:h,currentPage:D}),{isExpanded:z,toggleExpand:j}=Su(e)
+Ru({page:u,itemsPerPage:c,sortBy:r,groupBy:n,search:y}),Nt({VDataTableRows:{hideNoData:t.toRef(e,"hideNoData"),noDataText:t.toRef(e,"noDataText"),loading:t.toRef(e,"loading"),loadingText:t.toRef(e,"loadingText")}})
+const H=t.computed((()=>({page:u.value,itemsPerPage:c.value,sortBy:r.value,pageCount:A.value,toggleSort:V,setItemsPerPage:R,someSelected:O.value,allSelected:L.value,isSelected:E,select:F,selectAll:$,toggleSelect:M,isExpanded:z,toggleExpand:j,isGroupOpen:x,toggleGroup:N,items:D.value.map((e=>e.raw)),internalItems:D.value,groupedItems:T.value,columns:v.value,headers:p.value})))
+return $t((()=>{const a=nc.filterProps(e),n=Sc.filterProps(e),r=Ic.filterProps(e),i=Bc.filterProps(e)
+return t.createVNode(Bc,t.mergeProps({class:["v-data-table",{"v-data-table--show-select":e.showSelect,"v-data-table--loading":e.loading},e.class],style:e.style},i),{top:()=>o.top?.(H.value),default:()=>o.default?o.default(H.value):t.createVNode(t.Fragment,null,[o.colgroup?.(H.value),!e.hideDefaultHeader&&t.createVNode("thead",{key:"thead"},[t.createVNode(Sc,n,o)]),o.thead?.(H.value),!e.hideDefaultBody&&t.createVNode("tbody",null,[o["body.prepend"]?.(H.value),o.body?o.body(H.value):t.createVNode(Ic,t.mergeProps(l,r,{items:T.value}),o),o["body.append"]?.(H.value)]),o.tbody?.(H.value),o.tfoot?.(H.value)]),bottom:()=>o.bottom?o.bottom(H.value):!e.hideDefaultFooter&&t.createVNode(t.Fragment,null,[t.createVNode(fr,null,null),t.createVNode(nc,a,{prepend:o["footer.prepend"]})])})})),{}}}),$c=gt({...Dc(),...xu(),..._i(),...Fi()},"VDataTableVirtual"),Mc=It()({name:"VDataTableVirtual",props:$c(),emits:{"update:modelValue":e=>!0,"update:sortBy":e=>!0,"update:options":e=>!0,"update:groupBy":e=>!0,"update:expanded":e=>!0},setup(e,a){let{attrs:l,slots:o}=a
+const{groupBy:n}=Cu(e),{sortBy:r,multiSort:i,mustSort:s}=Gu(e),{disableSort:u}=t.toRefs(e),{columns:c,headers:d,filterFunctions:v,sortFunctions:p,sortRawFunctions:m}=bc(e,{groupBy:n,showSelect:t.toRef(e,"showSelect"),showExpand:t.toRef(e,"showExpand")}),{items:g}=Tc(e,c),h=t.toRef(e,"search"),{filteredItems:y}=$i(e,g,h,{transform:e=>e.columns,customKeyFilter:v}),{toggleSort:b}=qu({sortBy:r,multiSort:i,mustSort:s}),{sortByWithGroups:V,opened:w,extractRows:S,isGroupOpen:k,toggleGroup:x}=_u({groupBy:n,sortBy:r,disableSort:u}),{sortedItems:N}=Xu(e,y,V,{transform:e=>({...e.raw,...e.columns}),sortFunctions:p,sortRawFunctions:m}),{flatItems:C}=Au(N,n,w),_=t.computed((()=>S(C.value))),{isSelected:I,select:P,selectAll:B,toggleSelect:A,someSelected:R,allSelected:T}=Hu(e,{allItems:_,currentPage:_}),{isExpanded:D,toggleExpand:E}=Su(e),{containerRef:F,markerRef:$,paddingTop:M,paddingBottom:O,computedItems:L,handleItemResize:z,handleScroll:j,handleScrollend:H}=Ii(e,C),W=t.computed((()=>L.value.map((e=>e.raw))))
+Ru({sortBy:r,page:t.shallowRef(1),itemsPerPage:t.shallowRef(-1),groupBy:n,search:h}),Nt({VDataTableRows:{hideNoData:t.toRef(e,"hideNoData"),noDataText:t.toRef(e,"noDataText"),loading:t.toRef(e,"loading"),loadingText:t.toRef(e,"loadingText")}})
+const U=t.computed((()=>({sortBy:r.value,toggleSort:b,someSelected:R.value,allSelected:T.value,isSelected:I,select:P,selectAll:B,toggleSelect:A,isExpanded:D,toggleExpand:E,isGroupOpen:k,toggleGroup:x,items:_.value.map((e=>e.raw)),internalItems:_.value,groupedItems:C.value,columns:c.value,headers:d.value})))
+$t((()=>{const a=Sc.filterProps(e),n=Ic.filterProps(e),r=Bc.filterProps(e)
+return t.createVNode(Bc,t.mergeProps({class:["v-data-table",{"v-data-table--loading":e.loading},e.class],style:e.style},r),{top:()=>o.top?.(U.value),wrapper:()=>t.createVNode("div",{ref:F,onScrollPassive:j,onScrollend:H,class:"v-table__wrapper",style:{height:f(e.height)}},[t.createVNode("table",null,[o.colgroup?.(U.value),!e.hideDefaultHeader&&t.createVNode("thead",{key:"thead"},[t.createVNode(Sc,t.mergeProps(a,{sticky:e.fixedHeader}),o)]),!e.hideDefaultBody&&t.createVNode("tbody",null,[t.createVNode("tr",{ref:$,style:{height:f(M.value),border:0}},[t.createVNode("td",{colspan:c.value.length,style:{height:0,border:0}},null)]),o["body.prepend"]?.(U.value),t.createVNode(Ic,t.mergeProps(l,n,{items:W.value}),{...o,item:e=>t.createVNode(Ci,{key:e.internalItem.index,renderless:!0,"onUpdate:height":t=>z(e.internalItem.index,t)},{default:a=>{let{itemRef:l}=a
+return o.item?.({...e,itemRef:l})??t.createVNode(Cc,t.mergeProps(e.props,{ref:l,key:e.internalItem.index,index:e.internalItem.index}),o)}})}),o["body.append"]?.(U.value),t.createVNode("tr",{style:{height:f(O.value),border:0}},[t.createVNode("td",{colspan:c.value.length,style:{height:0,border:0}},null)])])])]),bottom:()=>o.bottom?.(U.value)})}))}}),Oc=gt({itemsLength:{type:[Number,String],required:!0},...Tu(),...Dc(),...oc()},"VDataTableServer"),Lc=It()({name:"VDataTableServer",props:Oc(),emits:{"update:modelValue":e=>!0,"update:page":e=>!0,"update:itemsPerPage":e=>!0,"update:sortBy":e=>!0,"update:options":e=>!0,"update:expanded":e=>!0,"update:groupBy":e=>!0},setup(e,a){let{attrs:l,slots:o}=a
+const{groupBy:n}=Cu(e),{sortBy:r,multiSort:i,mustSort:s}=Gu(e),{page:u,itemsPerPage:c}=Eu(e),{disableSort:d}=t.toRefs(e),v=t.computed((()=>parseInt(e.itemsLength,10))),{columns:p,headers:f}=bc(e,{groupBy:n,showSelect:t.toRef(e,"showSelect"),showExpand:t.toRef(e,"showExpand")}),{items:m}=Tc(e,p),{toggleSort:g}=qu({sortBy:r,multiSort:i,mustSort:s,page:u}),{opened:h,isGroupOpen:y,toggleGroup:b,extractRows:V}=_u({groupBy:n,sortBy:r,disableSort:d}),{pageCount:w,setItemsPerPage:S}=Fu({page:u,itemsPerPage:c,itemsLength:v}),{flatItems:k}=Au(m,n,h),{isSelected:x,select:N,selectAll:C,toggleSelect:_,someSelected:I,allSelected:P}=Hu(e,{allItems:m,currentPage:m}),{isExpanded:B,toggleExpand:A}=Su(e),R=t.computed((()=>V(m.value)))
+Ru({page:u,itemsPerPage:c,sortBy:r,groupBy:n,search:t.toRef(e,"search")}),t.provide("v-data-table",{toggleSort:g,sortBy:r}),Nt({VDataTableRows:{hideNoData:t.toRef(e,"hideNoData"),noDataText:t.toRef(e,"noDataText"),loading:t.toRef(e,"loading"),loadingText:t.toRef(e,"loadingText")}})
+const T=t.computed((()=>({page:u.value,itemsPerPage:c.value,sortBy:r.value,pageCount:w.value,toggleSort:g,setItemsPerPage:S,someSelected:I.value,allSelected:P.value,isSelected:x,select:N,selectAll:C,toggleSelect:_,isExpanded:B,toggleExpand:A,isGroupOpen:y,toggleGroup:b,items:R.value.map((e=>e.raw)),internalItems:R.value,groupedItems:k.value,columns:p.value,headers:f.value})))
+$t((()=>{const a=nc.filterProps(e),n=Sc.filterProps(e),r=Ic.filterProps(e),i=Bc.filterProps(e)
+return t.createVNode(Bc,t.mergeProps({class:["v-data-table",{"v-data-table--loading":e.loading},e.class],style:e.style},i),{top:()=>o.top?.(T.value),default:()=>o.default?o.default(T.value):t.createVNode(t.Fragment,null,[o.colgroup?.(T.value),!e.hideDefaultHeader&&t.createVNode("thead",{key:"thead",class:"v-data-table__thead",role:"rowgroup"},[t.createVNode(Sc,t.mergeProps(n,{sticky:e.fixedHeader}),o)]),o.thead?.(T.value),!e.hideDefaultBody&&t.createVNode("tbody",{class:"v-data-table__tbody",role:"rowgroup"},[o["body.prepend"]?.(T.value),o.body?o.body(T.value):t.createVNode(Ic,t.mergeProps(l,r,{items:k.value}),o),o["body.append"]?.(T.value)]),o.tbody?.(T.value),o.tfoot?.(T.value)]),bottom:()=>o.bottom?o.bottom(T.value):!e.hideDefaultFooter&&t.createVNode(t.Fragment,null,[t.createVNode(fr,null,null),t.createVNode(nc,a,{prepend:o["footer.prepend"]})])})}))}}),zc=gt({fluid:{type:Boolean,default:!1},...ht(),...ll(),...Pa()},"VContainer"),jc=It()({name:"VContainer",props:zc(),setup(e,a){let{slots:l}=a
+const{rtlClasses:o}=ba(),{dimensionStyles:n}=ol(e)
+return $t((()=>t.createVNode(e.tag,{class:["v-container",{"v-container--fluid":e.fluid},o.value,e.class],style:[n.value,e.style]},l))),{}}}),Hc=gn.reduce(((e,t)=>(e[t]={type:[Boolean,String,Number],default:!1},e)),{}),Wc=gn.reduce(((e,a)=>(e["offset"+t.capitalize(a)]={type:[String,Number],default:null},e)),{}),Uc=gn.reduce(((e,a)=>(e["order"+t.capitalize(a)]={type:[String,Number],default:null},e)),{}),Yc={col:Object.keys(Hc),offset:Object.keys(Wc),order:Object.keys(Uc)}
+function Gc(e,t,a){let l=e
+if(null!=a&&!1!==a){if(t){l+=`-${t.replace(e,"")}`}return"col"===e&&(l="v-"+l),"col"!==e||""!==a&&!0!==a?(l+=`-${a}`,l.toLowerCase()):l.toLowerCase()}}const qc=["auto","start","end","center","baseline","stretch"],Kc=gt({cols:{type:[Boolean,String,Number],default:!1},...Hc,offset:{type:[String,Number],default:null},...Wc,order:{type:[String,Number],default:null},...Uc,alignSelf:{type:String,default:null,validator:e=>qc.includes(e)},...ht(),...Pa()},"VCol"),Xc=It()({name:"VCol",props:Kc(),setup(e,a){let{slots:l}=a
+const o=t.computed((()=>{const t=[]
+let a
+for(a in Yc)Yc[a].forEach((l=>{const o=e[l],n=Gc(a,l,o)
+n&&t.push(n)}))
+const l=t.some((e=>e.startsWith("v-col-")))
+return t.push({"v-col":!l||!e.cols,[`v-col-${e.cols}`]:e.cols,[`offset-${e.offset}`]:e.offset,[`order-${e.order}`]:e.order,[`align-self-${e.alignSelf}`]:e.alignSelf}),t}))
+return()=>t.h(e.tag,{class:[o.value,e.class],style:e.style},l.default?.())}}),Zc=["start","end","center"],Qc=["space-between","space-around","space-evenly"]
+function Jc(e,a){return gn.reduce(((l,o)=>(l[e+t.capitalize(o)]=a(),l)),{})}const ed=[...Zc,"baseline","stretch"],td=e=>ed.includes(e),ad=Jc("align",(()=>({type:String,default:null,validator:td}))),ld=[...Zc,...Qc],od=e=>ld.includes(e),nd=Jc("justify",(()=>({type:String,default:null,validator:od}))),rd=[...Zc,...Qc,"stretch"],id=e=>rd.includes(e),sd=Jc("alignContent",(()=>({type:String,default:null,validator:id}))),ud={align:Object.keys(ad),justify:Object.keys(nd),alignContent:Object.keys(sd)},cd={align:"align",justify:"justify",alignContent:"align-content"}
+function dd(e,t,a){let l=cd[e]
+if(null!=a){if(t){l+=`-${t.replace(e,"")}`}return l+=`-${a}`,l.toLowerCase()}}const vd=gt({dense:Boolean,noGutters:Boolean,align:{type:String,default:null,validator:td},...ad,justify:{type:String,default:null,validator:od},...nd,alignContent:{type:String,default:null,validator:id},...sd,...ht(),...Pa()},"VRow"),pd=It()({name:"VRow",props:vd(),setup(e,a){let{slots:l}=a
+const o=t.computed((()=>{const t=[]
+let a
+for(a in ud)ud[a].forEach((l=>{const o=e[l],n=dd(a,l,o)
+n&&t.push(n)}))
+return t.push({"v-row--no-gutters":e.noGutters,"v-row--dense":e.dense,[`align-${e.align}`]:e.align,[`justify-${e.justify}`]:e.justify,[`align-content-${e.alignContent}`]:e.alignContent}),t}))
+return()=>t.h(e.tag,{class:["v-row",o.value,e.class],style:e.style},l.default?.())}}),fd=Pt("v-spacer","div","VSpacer"),md=gt({active:{type:[String,Array],default:void 0},disabled:{type:[Boolean,String,Array],default:!1},nextIcon:{type:Mt,default:"$next"},prevIcon:{type:Mt,default:"$prev"},modeIcon:{type:Mt,default:"$subgroup"},text:String,viewMode:{type:String,default:"month"}},"VDatePickerControls"),gd=It()({name:"VDatePickerControls",props:md(),emits:{"click:year":()=>!0,"click:month":()=>!0,"click:prev":()=>!0,"click:next":()=>!0,"click:text":()=>!0},setup(e,a){let{emit:l}=a
+const o=t.computed((()=>Array.isArray(e.disabled)?e.disabled.includes("text"):!!e.disabled)),n=t.computed((()=>Array.isArray(e.disabled)?e.disabled.includes("mode"):!!e.disabled)),r=t.computed((()=>Array.isArray(e.disabled)?e.disabled.includes("prev"):!!e.disabled)),i=t.computed((()=>Array.isArray(e.disabled)?e.disabled.includes("next"):!!e.disabled))
+function s(){l("click:prev")}function u(){l("click:next")}function c(){l("click:year")}function d(){l("click:month")}return $t((()=>t.createVNode("div",{class:["v-date-picker-controls"]},[t.createVNode(Eo,{class:"v-date-picker-controls__month-btn",disabled:o.value,text:e.text,variant:"text",rounded:!0,onClick:d},null),t.createVNode(Eo,{key:"mode-btn",class:"v-date-picker-controls__mode-btn",disabled:n.value,density:"comfortable",icon:e.modeIcon,variant:"text",onClick:c},null),t.createVNode(fd,{key:"mode-spacer"},null),t.createVNode("div",{key:"month-buttons",class:"v-date-picker-controls__month"},[t.createVNode(Eo,{disabled:r.value,icon:e.prevIcon,variant:"text",onClick:s},null),t.createVNode(Eo,{disabled:i.value,icon:e.nextIcon,variant:"text",onClick:u},null)])]))),{}}}),hd=gt({appendIcon:Mt,color:String,header:String,transition:String,onClick:G()},"VDatePickerHeader"),yd=It()({name:"VDatePickerHeader",props:hd(),emits:{click:()=>!0,"click:append":()=>!0},setup(e,a){let{emit:l,slots:o}=a
+const{backgroundColorClasses:n,backgroundColorStyles:r}=ul(e,"color")
+function i(){l("click")}function s(){l("click:append")}return $t((()=>{const a=!(!o.default&&!e.header),l=!(!o.append&&!e.appendIcon)
+return t.createVNode("div",{class:["v-date-picker-header",{"v-date-picker-header--clickable":!!e.onClick},n.value],style:r.value,onClick:i},[o.prepend&&t.createVNode("div",{key:"prepend",class:"v-date-picker-header__prepend"},[o.prepend()]),a&&t.createVNode(pl,{key:"content",name:e.transition},{default:()=>[t.createVNode("div",{key:e.header,class:"v-date-picker-header__content"},[o.default?.()??e.header])]}),l&&t.createVNode("div",{class:"v-date-picker-header__append"},[o.append?t.createVNode(al,{key:"append-defaults",disabled:!e.appendIcon,defaults:{VBtn:{icon:e.appendIcon,variant:"text"}}},{default:()=>[o.append?.()]}):t.createVNode(Eo,{key:"append-btn",icon:e.appendIcon,variant:"text",onClick:s},null)])])})),{}}}),bd=gt({allowedDates:[Array,Function],disabled:Boolean,displayValue:null,modelValue:Array,month:[Number,String],max:null,min:null,showAdjacentMonths:Boolean,year:[Number,String],weekdays:{type:Array,default:()=>[0,1,2,3,4,5,6]},weeksInMonth:{type:String,default:"dynamic"},firstDayOfWeek:[Number,String]},"calendar")
+function Vd(e){const a=hu(),l=ia(e,"modelValue",[],(e=>A(e))),o=t.computed((()=>e.displayValue?a.date(e.displayValue):l.value.length>0?a.date(l.value[0]):e.min?a.date(e.min):Array.isArray(e.allowedDates)?a.date(e.allowedDates[0]):a.date())),n=ia(e,"year",void 0,(e=>{const t=null!=e?Number(e):a.getYear(o.value)
+return a.startOfYear(a.setYear(a.date(),t))}),(e=>a.getYear(e))),r=ia(e,"month",void 0,(e=>{const t=null!=e?Number(e):a.getMonth(o.value),l=a.setYear(a.startOfMonth(a.date()),a.getYear(n.value))
+return a.setMonth(l,t)}),(e=>a.getMonth(e))),i=t.computed((()=>{const t=Number(e.firstDayOfWeek??0)
+return e.weekdays.map((e=>(e+t)%7))})),s=t.computed((()=>{const t=a.getWeekArray(r.value,e.firstDayOfWeek),l=t.flat()
+if("static"===e.weeksInMonth&&l.length<42){const e=l[l.length-1]
+let o=[]
+for(let n=1;n<=42-l.length;n++)o.push(a.addDays(e,n)),n%7==0&&(t.push(o),o=[])}return t}))
+function u(t,o){return t.filter((e=>i.value.includes(a.toJsDate(e).getDay()))).map(((t,n)=>{const i=a.toISO(t),s=!a.isSameMonth(t,r.value),u=a.isSameDay(t,a.startOfMonth(r.value)),c=a.isSameDay(t,a.endOfMonth(r.value)),d=a.isSameDay(t,r.value)
+return{date:t,isoDate:i,formatted:a.format(t,"keyboardDate"),year:a.getYear(t),month:a.getMonth(t),isDisabled:p(t),isWeekStart:n%7==0,isWeekEnd:n%7==6,isToday:a.isSameDay(t,o),isAdjacent:s,isHidden:s&&!e.showAdjacentMonths,isStart:u,isSelected:l.value.some((e=>a.isSameDay(t,e))),isEnd:c,isSame:d,localized:a.format(t,"dayOfMonth")}}))}const c=t.computed((()=>{const t=a.startOfWeek(o.value,e.firstDayOfWeek),l=[]
+for(let e=0;e<=6;e++)l.push(a.addDays(t,e))
+return u(l,a.date())})),d=t.computed((()=>u(s.value.flat(),a.date()))),v=t.computed((()=>s.value.map((e=>e.length?function(e,t){const a=e.toJsDate(t)
+let l=a.getFullYear(),o=new Date(l,0,1)
+if(a<o)l-=1,o=new Date(l,0,1)
+else{const e=new Date(l+1,0,1)
+a>=e&&(l+=1,o=e)}const n=Math.abs(a.getTime()-o.getTime()),r=Math.ceil(n/864e5)
+return Math.floor(r/7)+1}(a,e[0]):null))))
+function p(t){if(e.disabled)return!0
+const l=a.date(t)
+return!(!e.min||!a.isAfter(a.date(e.min),l))||(!(!e.max||!a.isAfter(l,a.date(e.max)))||(Array.isArray(e.allowedDates)&&e.allowedDates.length>0?!e.allowedDates.some((e=>a.isSameDay(a.date(e),l))):"function"==typeof e.allowedDates&&!e.allowedDates(l)))}return{displayValue:o,daysInMonth:d,daysInWeek:c,genDays:u,model:l,weeksInMonth:s,weekDays:i,weekNumbers:v}}const wd=gt({color:String,hideWeekdays:Boolean,multiple:[Boolean,Number,String],showWeek:Boolean,transition:{type:String,default:"picker-transition"},reverseTransition:{type:String,default:"picker-reverse-transition"},...bd()},"VDatePickerMonth"),Sd=It()({name:"VDatePickerMonth",props:wd(),emits:{"update:modelValue":e=>!0,"update:month":e=>!0,"update:year":e=>!0},setup(e,a){let{emit:l,slots:o}=a
+const n=t.ref(),{daysInMonth:r,model:i,weekNumbers:s}=Vd(e),u=hu(),c=t.shallowRef(),d=t.shallowRef(),v=t.shallowRef(!1),p=t.computed((()=>v.value?e.reverseTransition:e.transition))
+"range"===e.multiple&&i.value.length>0&&(c.value=i.value[0],i.value.length>1&&(d.value=i.value[i.value.length-1]))
+const f=t.computed((()=>{const t=["number","string"].includes(typeof e.multiple)?Number(e.multiple):1/0
+return i.value.length>=t}))
+function m(t){"range"===e.multiple?function(e){const t=u.startOfDay(e)
+if(0===i.value.length?c.value=void 0:1===i.value.length&&(c.value=i.value[0],d.value=void 0),c.value)if(d.value)c.value=e,d.value=void 0,i.value=[c.value]
+else{if(u.isSameDay(t,c.value))return c.value=void 0,void(i.value=[])
+u.isBefore(t,c.value)?(d.value=u.endOfDay(c.value),c.value=t):d.value=u.endOfDay(t)
+const e=u.getDiff(d.value,c.value,"days"),a=[c.value]
+for(let t=1;t<e;t++){const e=u.addDays(c.value,t)
+a.push(e)}a.push(d.value),i.value=a}else c.value=t,i.value=[c.value]}(t):e.multiple?function(e){const t=i.value.findIndex((t=>u.isSameDay(t,e)))
+if(-1===t)i.value=[...i.value,e]
+else{const e=[...i.value]
+e.splice(t,1),i.value=e}}(t):i.value=[t]}return t.watch(r,((e,t)=>{t&&(v.value=u.isBefore(e[0].date,t[0].date))})),()=>t.createVNode("div",{class:"v-date-picker-month"},[e.showWeek&&t.createVNode("div",{key:"weeks",class:"v-date-picker-month__weeks"},[!e.hideWeekdays&&t.createVNode("div",{key:"hide-week-days",class:"v-date-picker-month__day"},[t.createTextVNode(" ")]),s.value.map((e=>t.createVNode("div",{class:["v-date-picker-month__day","v-date-picker-month__day--adjacent"]},[e])))]),t.createVNode(pl,{name:p.value},{default:()=>[t.createVNode("div",{ref:n,key:r.value[0].date?.toString(),class:"v-date-picker-month__days"},[!e.hideWeekdays&&u.getWeekdays(e.firstDayOfWeek).map((e=>t.createVNode("div",{class:["v-date-picker-month__day","v-date-picker-month__weekday"]},[e]))),r.value.map(((a,l)=>{const n={props:{onClick:()=>m(a.date)},item:a,i:l}
+return f.value&&!a.isSelected&&(a.isDisabled=!0),t.createVNode("div",{class:["v-date-picker-month__day",{"v-date-picker-month__day--adjacent":a.isAdjacent,"v-date-picker-month__day--hide-adjacent":a.isHidden,"v-date-picker-month__day--selected":a.isSelected,"v-date-picker-month__day--week-end":a.isWeekEnd,"v-date-picker-month__day--week-start":a.isWeekStart}],"data-v-date":a.isDisabled?void 0:a.isoDate},[(e.showAdjacentMonths||!a.isAdjacent)&&t.createVNode(al,{defaults:{VBtn:{class:"v-date-picker-month__day-btn",color:!a.isSelected&&!a.isToday||a.isDisabled?void 0:e.color,disabled:a.isDisabled,icon:!0,ripple:!1,text:a.localized,variant:a.isDisabled?a.isToday?"outlined":"text":a.isToday&&!a.isSelected?"outlined":"flat",onClick:()=>m(a.date)}}},{default:()=>[o.day?.(n)??t.createVNode(Eo,n.props,null)]})])}))])]})])}}),kd=gt({color:String,height:[String,Number],min:null,max:null,modelValue:Number,year:Number},"VDatePickerMonths"),xd=It()({name:"VDatePickerMonths",props:kd(),emits:{"update:modelValue":e=>!0},setup(e,a){let{emit:l,slots:o}=a
+const n=hu(),r=ia(e,"modelValue"),i=t.computed((()=>{let t=n.startOfYear(n.date())
+return e.year&&(t=n.setYear(t,e.year)),p(12).map((a=>{const l=n.format(t,"monthShort"),o=!!(e.min&&n.isAfter(n.startOfMonth(n.date(e.min)),t)||e.max&&n.isAfter(t,n.startOfMonth(n.date(e.max))))
+return t=n.getNextMonth(t),{isDisabled:o,text:l,value:a}}))}))
+return t.watchEffect((()=>{r.value=r.value??n.getMonth(n.date())})),$t((()=>t.createVNode("div",{class:"v-date-picker-months",style:{height:f(e.height)}},[t.createVNode("div",{class:"v-date-picker-months__content"},[i.value.map(((a,n)=>{const i={active:r.value===n,color:r.value===n?e.color:void 0,disabled:a.isDisabled,rounded:!0,text:a.text,variant:r.value===a.value?"flat":"text",onClick:()=>function(e){if(r.value===e)return void l("update:modelValue",r.value)
+r.value=e}(n)}
+return o.month?.({month:a,i:n,props:i})??t.createVNode(Eo,t.mergeProps({key:"month"},i),null)}))])]))),{}}}),Nd=gt({color:String,height:[String,Number],min:null,max:null,modelValue:Number},"VDatePickerYears"),Cd=It()({name:"VDatePickerYears",props:Nd(),emits:{"update:modelValue":e=>!0},setup(e,a){let{emit:l,slots:o}=a
+const n=hu(),r=ia(e,"modelValue"),i=t.computed((()=>{const t=n.getYear(n.date())
+let a=t-100,l=t+52
+e.min&&(a=n.getYear(n.date(e.min))),e.max&&(l=n.getYear(n.date(e.max)))
+let o=n.startOfYear(n.date())
+return o=n.setYear(o,a),p(l-a+1,a).map((e=>{const t=n.format(o,"year")
+return o=n.setYear(o,n.getYear(o)+1),{text:t,value:e}}))}))
+t.watchEffect((()=>{r.value=r.value??n.getYear(n.date())}))
+const s=le()
+return t.onMounted((async()=>{await t.nextTick(),s.el?.scrollIntoView({block:"center"})})),$t((()=>t.createVNode("div",{class:"v-date-picker-years",style:{height:f(e.height)}},[t.createVNode("div",{class:"v-date-picker-years__content"},[i.value.map(((a,n)=>{const i={ref:r.value===a.value?s:void 0,active:r.value===a.value,color:r.value===a.value?e.color:void 0,rounded:!0,text:a.text,variant:r.value===a.value?"flat":"text",onClick:()=>{r.value!==a.value?r.value=a.value:l("update:modelValue",r.value)}}
+return o.year?.({year:a,i:n,props:i})??t.createVNode(Eo,t.mergeProps({key:"month"},i),null)}))])]))),{}}}),_d=Pt("v-picker-title"),Id=gt({bgColor:String,landscape:Boolean,title:String,hideHeader:Boolean,...Qs()},"VPicker"),Pd=It()({name:"VPicker",props:Id(),setup(e,a){let{slots:l}=a
+const{backgroundColorClasses:o,backgroundColorStyles:n}=ul(t.toRef(e,"color"))
+return $t((()=>{const a=Js.filterProps(e),r=!(!e.title&&!l.title)
+return t.createVNode(Js,t.mergeProps(a,{color:e.bgColor,class:["v-picker",{"v-picker--landscape":e.landscape,"v-picker--with-actions":!!l.actions},e.class],style:e.style}),{default:()=>[!e.hideHeader&&t.createVNode("div",{key:"header",class:[o.value],style:[n.value]},[r&&t.createVNode(_d,{key:"picker-title"},{default:()=>[l.title?.()??e.title]}),l.header&&t.createVNode("div",{class:"v-picker__header"},[l.header()])]),t.createVNode("div",{class:"v-picker__body"},[l.default?.()]),l.actions&&t.createVNode(al,{defaults:{VBtn:{slim:!0,variant:"text"}}},{default:()=>[t.createVNode("div",{class:"v-picker__actions"},[l.actions()])]})]})})),{}}}),Bd=gt({header:{type:String,default:"$vuetify.datePicker.header"},...md(),...wd({weeksInMonth:"static"}),...x(kd(),["modelValue"]),...x(Nd(),["modelValue"]),...Id({title:"$vuetify.datePicker.title"}),modelValue:null},"VDatePicker"),Ad=It()({name:"VDatePicker",props:Bd(),emits:{"update:modelValue":e=>!0,"update:month":e=>!0,"update:year":e=>!0,"update:viewMode":e=>!0},setup(e,a){let{emit:l,slots:o}=a
+const n=hu(),{t:r}=ha(),i=ia(e,"modelValue",void 0,(e=>A(e)),(t=>e.multiple?t:t[0])),s=ia(e,"viewMode"),u=t.computed((()=>{const e=n.date(i.value?.[0])
+return e&&n.isValid(e)?e:n.date()})),c=t.ref(Number(e.month??n.getMonth(n.startOfMonth(u.value)))),d=t.ref(Number(e.year??n.getYear(n.startOfYear(n.setMonth(u.value,c.value))))),v=t.shallowRef(!1),p=t.computed((()=>e.multiple&&i.value.length>1?r("$vuetify.datePicker.itemsSelected",i.value.length):i.value[0]&&n.isValid(i.value[0])?n.format(n.date(i.value[0]),"normalDateWithWeekday"):r(e.header))),f=t.computed((()=>{let e=n.date()
+return e=n.setDate(e,1),e=n.setMonth(e,c.value),e=n.setYear(e,d.value),n.format(e,"monthAndYear")})),m=t.computed((()=>`date-picker-header${v.value?"-reverse":""}-transition`)),g=t.computed((()=>{const t=n.date(e.min)
+return e.min&&n.isValid(t)?t:null})),h=t.computed((()=>{const t=n.date(e.max)
+return e.max&&n.isValid(t)?t:null})),y=t.computed((()=>{if(e.disabled)return!0
+const t=[]
+if("month"!==s.value)t.push("prev","next")
+else{let e=n.date()
+if(e=n.setYear(e,d.value),e=n.setMonth(e,c.value),g.value){const a=n.addDays(n.startOfMonth(e),-1)
+n.isAfter(g.value,a)&&t.push("prev")}if(h.value){const a=n.addDays(n.endOfMonth(e),1)
+n.isAfter(a,h.value)&&t.push("next")}}return t}))
+function b(){c.value<11?c.value++:(d.value++,c.value=0,C(d.value)),N(c.value)}function V(){c.value>0?c.value--:(d.value--,c.value=11,C(d.value)),N(c.value)}function w(){s.value="month"}function S(){s.value="months"===s.value?"month":"months"}function k(){s.value="year"===s.value?"month":"year"}function N(e){"months"===s.value&&S(),l("update:month",e)}function C(e){"year"===s.value&&k(),l("update:year",e)}return t.watch(i,((e,t)=>{const a=A(t),l=A(e)
+if(!l.length)return
+const o=n.date(a[a.length-1]),r=n.date(l[l.length-1]),i=n.getMonth(r),s=n.getYear(r)
+i!==c.value&&(c.value=i,N(c.value)),s!==d.value&&(d.value=s,C(d.value)),v.value=n.isBefore(o,r)})),$t((()=>{const a=Pd.filterProps(e),l=gd.filterProps(e),n=yd.filterProps(e),u=Sd.filterProps(e),v=x(xd.filterProps(e),["modelValue"]),_=x(Cd.filterProps(e),["modelValue"]),I={header:p.value,transition:m.value}
+return t.createVNode(Pd,t.mergeProps(a,{class:["v-date-picker",`v-date-picker--${s.value}`,{"v-date-picker--show-week":e.showWeek},e.class],style:e.style}),{title:()=>o.title?.()??t.createVNode("div",{class:"v-date-picker__title"},[r(e.title)]),header:()=>o.header?t.createVNode(al,{defaults:{VDatePickerHeader:{...I}}},{default:()=>[o.header?.(I)]}):t.createVNode(yd,t.mergeProps({key:"header"},n,I,{onClick:"month"!==s.value?w:void 0}),{...o,default:void 0}),default:()=>t.createVNode(t.Fragment,null,[t.createVNode(gd,t.mergeProps(l,{disabled:y.value,text:f.value,"onClick:next":b,"onClick:prev":V,"onClick:month":S,"onClick:year":k}),null),t.createVNode(Ha,{hideOnLeave:!0},{default:()=>["months"===s.value?t.createVNode(xd,t.mergeProps({key:"date-picker-months"},v,{modelValue:c.value,"onUpdate:modelValue":[e=>c.value=e,N],min:g.value,max:h.value,year:d.value}),null):"year"===s.value?t.createVNode(Cd,t.mergeProps({key:"date-picker-years"},_,{modelValue:d.value,"onUpdate:modelValue":[e=>d.value=e,C],min:g.value,max:h.value}),null):t.createVNode(Sd,t.mergeProps({key:"date-picker-month"},u,{modelValue:i.value,"onUpdate:modelValue":e=>i.value=e,month:c.value,"onUpdate:month":[e=>c.value=e,N],year:d.value,"onUpdate:year":[e=>d.value=e,C],min:g.value,max:h.value}),null)]})]),actions:o.actions})})),{}}}),Rd=gt({actionText:String,bgColor:String,color:String,icon:Mt,image:String,justify:{type:String,default:"center"},headline:String,title:String,text:String,textWidth:{type:[Number,String],default:500},href:String,to:String,...ht(),...ll(),...Gl({size:void 0}),...wa()},"VEmptyState"),Td=It()({name:"VEmptyState",props:Rd(),emits:{"click:action":e=>!0},setup(e,a){let{emit:l,slots:o}=a
+const{themeClasses:n}=ka(e),{backgroundColorClasses:r,backgroundColorStyles:i}=ul(t.toRef(e,"bgColor")),{dimensionStyles:s}=ol(e),{displayClasses:u}=xn()
+function c(e){l("click:action",e)}return $t((()=>{const a=!(!o.actions&&!e.actionText),l=!(!o.headline&&!e.headline),d=!(!o.title&&!e.title),v=!(!o.text&&!e.text),p=!!(o.media||e.image||e.icon),m=e.size||(e.image?200:96)
+return t.createVNode("div",{class:["v-empty-state",{[`v-empty-state--${e.justify}`]:!0},n.value,r.value,u.value,e.class],style:[i.value,s.value,e.style]},[p&&t.createVNode("div",{key:"media",class:"v-empty-state__media"},[o.media?t.createVNode(al,{key:"media-defaults",defaults:{VImg:{src:e.image,height:m},VIcon:{size:m,icon:e.icon}}},{default:()=>[o.media()]}):t.createVNode(t.Fragment,null,[e.image?t.createVNode(hl,{key:"image",src:e.image,height:m},null):e.icon?t.createVNode(Xl,{key:"icon",color:e.color,size:m,icon:e.icon},null):void 0])]),l&&t.createVNode("div",{key:"headline",class:"v-empty-state__headline"},[o.headline?.()??e.headline]),d&&t.createVNode("div",{key:"title",class:"v-empty-state__title"},[o.title?.()??e.title]),v&&t.createVNode("div",{key:"text",class:"v-empty-state__text",style:{maxWidth:f(e.textWidth)}},[o.text?.()??e.text]),o.default&&t.createVNode("div",{key:"content",class:"v-empty-state__content"},[o.default()]),a&&t.createVNode("div",{key:"actions",class:"v-empty-state__actions"},[t.createVNode(al,{defaults:{VBtn:{class:"v-empty-state__action-btn",color:e.color??"surface-variant",text:e.actionText}}},{default:()=>[o.actions?.({props:{onClick:c}})??t.createVNode(Eo,{onClick:c},null)]})])])})),{}}}),Dd=Symbol.for("vuetify:v-expansion-panel"),Ed=gt({...ht(),...Xr()},"VExpansionPanelText"),Fd=It()({name:"VExpansionPanelText",props:Ed(),setup(e,a){let{slots:l}=a
+const o=t.inject(Dd)
+if(!o)throw new Error("[Vuetify] v-expansion-panel-text needs to be placed inside v-expansion-panel")
+const{hasContent:n,onAfterLeave:r}=Zr(e,o.isSelected)
+return $t((()=>t.createVNode(Ja,{onAfterLeave:r},{default:()=>[t.withDirectives(t.createVNode("div",{class:["v-expansion-panel-text",e.class],style:e.style},[l.default&&n.value&&t.createVNode("div",{class:"v-expansion-panel-text__wrapper"},[l.default?.()])]),[[t.vShow,o.isSelected.value]])]}))),{}}}),$d=gt({color:String,expandIcon:{type:Mt,default:"$expand"},collapseIcon:{type:Mt,default:"$collapse"},hideActions:Boolean,focusable:Boolean,static:Boolean,ripple:{type:[Boolean,Object],default:!1},readonly:Boolean,...ht(),...ll()},"VExpansionPanelTitle"),Md=It()({name:"VExpansionPanelTitle",directives:{Ripple:To},props:$d(),setup(e,a){let{slots:l}=a
+const o=t.inject(Dd)
+if(!o)throw new Error("[Vuetify] v-expansion-panel-title needs to be placed inside v-expansion-panel")
+const{backgroundColorClasses:n,backgroundColorStyles:r}=ul(e,"color"),{dimensionStyles:i}=ol(e),s=t.computed((()=>({collapseIcon:e.collapseIcon,disabled:o.disabled.value,expanded:o.isSelected.value,expandIcon:e.expandIcon,readonly:e.readonly}))),u=t.computed((()=>o.isSelected.value?e.collapseIcon:e.expandIcon))
+return $t((()=>t.withDirectives(t.createVNode("button",{class:["v-expansion-panel-title",{"v-expansion-panel-title--active":o.isSelected.value,"v-expansion-panel-title--focusable":e.focusable,"v-expansion-panel-title--static":e.static},n.value,e.class],style:[r.value,i.value,e.style],type:"button",tabindex:o.disabled.value?-1:void 0,disabled:o.disabled.value,"aria-expanded":o.isSelected.value,onClick:e.readonly?void 0:o.toggle},[t.createVNode("span",{class:"v-expansion-panel-title__overlay"},null),l.default?.(s.value),!e.hideActions&&t.createVNode(al,{defaults:{VIcon:{icon:u.value}}},{default:()=>[t.createVNode("span",{class:"v-expansion-panel-title__icon"},[l.actions?.(s.value)??t.createVNode(Xl,null,null)])]})]),[[t.resolveDirective("ripple"),e.ripple]]))),{}}}),Od=gt({title:String,text:String,bgColor:String,...Vl(),...Ol(),...cl(),...Pa(),...$d(),...Ed()},"VExpansionPanel"),Ld=It()({name:"VExpansionPanel",props:Od(),emits:{"group:selected":e=>!0},setup(e,a){let{slots:l}=a
+const o=Ll(e,Dd),{backgroundColorClasses:n,backgroundColorStyles:r}=ul(e,"bgColor"),{elevationClasses:i}=wl(e),{roundedClasses:s}=dl(e),u=t.computed((()=>o?.disabled.value||e.disabled)),c=t.computed((()=>o.group.items.value.reduce(((e,t,a)=>(o.group.selected.value.includes(t.id)&&e.push(a),e)),[]))),d=t.computed((()=>{const e=o.group.items.value.findIndex((e=>e.id===o.id))
+return!o.isSelected.value&&c.value.some((t=>t-e==1))})),v=t.computed((()=>{const e=o.group.items.value.findIndex((e=>e.id===o.id))
+return!o.isSelected.value&&c.value.some((t=>t-e==-1))}))
+return t.provide(Dd,o),$t((()=>{const a=!(!l.text&&!e.text),c=!(!l.title&&!e.title),p=Md.filterProps(e),f=Fd.filterProps(e)
+return t.createVNode(e.tag,{class:["v-expansion-panel",{"v-expansion-panel--active":o.isSelected.value,"v-expansion-panel--before-active":d.value,"v-expansion-panel--after-active":v.value,"v-expansion-panel--disabled":u.value},s.value,n.value,e.class],style:[r.value,e.style]},{default:()=>[t.createVNode("div",{class:["v-expansion-panel__shadow",...i.value]},null),t.createVNode(al,{defaults:{VExpansionPanelTitle:{...p},VExpansionPanelText:{...f}}},{default:()=>[c&&t.createVNode(Md,{key:"title"},{default:()=>[l.title?l.title():e.title]}),a&&t.createVNode(Fd,{key:"text"},{default:()=>[l.text?l.text():e.text]}),l.default?.()]})]})})),{groupItem:o}}}),zd=["default","accordion","inset","popout"],jd=gt({flat:Boolean,...Ml(),...S(Od(),["bgColor","collapseIcon","color","eager","elevation","expandIcon","focusable","hideActions","readonly","ripple","rounded","tile","static"]),...wa(),...ht(),...Pa(),variant:{type:String,default:"default",validator:e=>zd.includes(e)}},"VExpansionPanels"),Hd=It()({name:"VExpansionPanels",props:jd(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const{next:o,prev:n}=zl(e,Dd),{themeClasses:r}=ka(e),i=t.computed((()=>e.variant&&`v-expansion-panels--variant-${e.variant}`))
+return Nt({VExpansionPanel:{bgColor:t.toRef(e,"bgColor"),collapseIcon:t.toRef(e,"collapseIcon"),color:t.toRef(e,"color"),eager:t.toRef(e,"eager"),elevation:t.toRef(e,"elevation"),expandIcon:t.toRef(e,"expandIcon"),focusable:t.toRef(e,"focusable"),hideActions:t.toRef(e,"hideActions"),readonly:t.toRef(e,"readonly"),ripple:t.toRef(e,"ripple"),rounded:t.toRef(e,"rounded"),static:t.toRef(e,"static")}}),$t((()=>t.createVNode(e.tag,{class:["v-expansion-panels",{"v-expansion-panels--flat":e.flat,"v-expansion-panels--tile":e.tile},r.value,i.value,e.class],style:e.style},{default:()=>[l.default?.({prev:n,next:o})]}))),{next:o,prev:n}}}),Wd=gt({app:Boolean,appear:Boolean,extended:Boolean,layout:Boolean,offset:Boolean,modelValue:{type:Boolean,default:!0},...x(Do({active:!0}),["location"]),...aa(),...to(),...vl({transition:"fab-transition"})},"VFab"),Ud=It()({name:"VFab",props:Wd(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const o=ia(e,"modelValue"),n=t.shallowRef(56),r=t.ref(),{resizeRef:i}=Qt((e=>{e.length&&(n.value=e[0].target.clientHeight)})),s=t.computed((()=>e.app||e.absolute)),u=t.computed((()=>!!s.value&&(e.location?.split(" ").shift()??"bottom"))),c=t.computed((()=>!!s.value&&(e.location?.split(" ")[1]??"end")))
+ra((()=>e.app),(()=>{const a=oa({id:e.name,order:t.computed((()=>parseInt(e.order,10))),position:u,layoutSize:t.computed((()=>e.layout?n.value+24:0)),elementSize:t.computed((()=>n.value+24)),active:t.computed((()=>e.app&&o.value)),absolute:t.toRef(e,"absolute")})
+t.watchEffect((()=>{r.value=a.layoutItemStyles.value}))}))
+const d=t.ref()
+return $t((()=>{const a=Eo.filterProps(e)
+return t.createVNode("div",{ref:d,class:["v-fab",{"v-fab--absolute":e.absolute,"v-fab--app":!!e.app,"v-fab--extended":e.extended,"v-fab--offset":e.offset,[`v-fab--${u.value}`]:s.value,[`v-fab--${c.value}`]:s.value},e.class],style:[e.app?{...r.value}:{height:"inherit",width:void 0},e.style]},[t.createVNode("div",{class:"v-fab__container"},[t.createVNode(pl,{appear:e.appear,transition:e.transition},{default:()=>[t.withDirectives(t.createVNode(Eo,t.mergeProps({ref:i},a,{active:void 0,location:void 0}),l),[[t.vShow,e.active]])]})])])})),{}}}),Yd=gt({chips:Boolean,counter:Boolean,counterSizeString:{type:String,default:"$vuetify.fileInput.counterSize"},counterString:{type:String,default:"$vuetify.fileInput.counter"},hideInput:Boolean,multiple:Boolean,showSize:{type:[Boolean,Number,String],default:!1,validator:e=>"boolean"==typeof e||[1e3,1024].includes(Number(e))},...vn({prependIcon:"$file"}),modelValue:{type:[Array,Object],default:e=>e.multiple?[]:null,validator:e=>A(e).every((e=>null!=e&&"object"==typeof e))},...bi({clearable:!0})},"VFileInput"),Gd=It()({name:"VFileInput",inheritAttrs:!1,props:Yd(),emits:{"click:control":e=>!0,"mousedown:control":e=>!0,"update:focused":e=>!0,"update:modelValue":e=>!0},setup(e,a){let{attrs:l,emit:o,slots:n}=a
+const{t:r}=ha(),i=ia(e,"modelValue",e.modelValue,(e=>A(e)),(t=>!e.multiple&&Array.isArray(t)?t[0]:t)),{isFocused:s,focus:u,blur:c}=nn(e),d=t.computed((()=>"boolean"!=typeof e.showSize?e.showSize:void 0)),v=t.computed((()=>(i.value??[]).reduce(((e,t)=>{let{size:a=0}=t
+return e+a}),0))),p=t.computed((()=>F(v.value,d.value))),f=t.computed((()=>(i.value??[]).map((t=>{const{name:a="",size:l=0}=t
+return e.showSize?`${a} (${F(l,d.value)})`:a})))),m=t.computed((()=>{const t=i.value?.length??0
+return e.showSize?r(e.counterSizeString,t,p.value):r(e.counterString,t)})),g=t.ref(),h=t.ref(),y=t.ref(),b=t.computed((()=>s.value||e.active)),V=t.computed((()=>["plain","underlined"].includes(e.variant)))
+function w(){y.value!==document.activeElement&&y.value?.focus(),s.value||u()}function S(e){y.value?.click()}function k(e){o("mousedown:control",e)}function x(e){y.value?.click(),o("click:control",e)}function N(a){a.stopPropagation(),w(),t.nextTick((()=>{i.value=[],K(e["onClick:clear"],a)}))}return t.watch(i,(e=>{(!Array.isArray(e)||!e.length)&&y.value&&(y.value.value="")})),$t((()=>{const a=!(!n.counter&&!e.counter),o=!(!a&&!n.details),[r,u]=B(l),{modelValue:d,...C}=pn.filterProps(e),_=wi(e)
+return t.createVNode(pn,t.mergeProps({ref:g,modelValue:i.value,"onUpdate:modelValue":e=>i.value=e,class:["v-file-input",{"v-file-input--chips":!!e.chips,"v-file-input--hide":e.hideInput,"v-input--plain-underlined":V.value},e.class],style:e.style,"onClick:prepend":S},r,C,{centerAffix:!V.value,focused:s.value}),{...n,default:a=>{let{id:l,isDisabled:o,isDirty:r,isReadonly:d,isValid:m}=a
+return t.createVNode(Vi,t.mergeProps({ref:h,"prepend-icon":e.prependIcon,onMousedown:k,onClick:x,"onClick:clear":N,"onClick:prependInner":e["onClick:prependInner"],"onClick:appendInner":e["onClick:appendInner"]},_,{id:l.value,active:b.value||r.value,dirty:r.value||e.dirty,disabled:o.value,focused:s.value,error:!1===m.value}),{...n,default:a=>{let{props:{class:l,...r}}=a
+return t.createVNode(t.Fragment,null,[t.createVNode("input",t.mergeProps({ref:y,type:"file",readonly:d.value,disabled:o.value,multiple:e.multiple,name:e.name,onClick:e=>{e.stopPropagation(),d.value&&e.preventDefault(),w()},onChange:e=>{if(!e.target)return
+const t=e.target
+i.value=[...t.files??[]]},onFocus:w,onBlur:c},r,u),null),t.createVNode("div",{class:l},[!!i.value?.length&&!e.hideInput&&(n.selection?n.selection({fileNames:f.value,totalBytes:v.value,totalBytesReadable:p.value}):e.chips?f.value.map((e=>t.createVNode(zn,{key:e,size:"small",text:e},null))):f.value.join(", "))])])}})},details:o?l=>t.createVNode(t.Fragment,null,[n.details?.(l),a&&t.createVNode(t.Fragment,null,[t.createVNode("span",null,null),t.createVNode(mi,{active:!!i.value?.length,value:m.value,disabled:e.disabled},n.counter)])]):void 0})})),di({},g,h,y)}}),qd=gt({app:Boolean,color:String,height:{type:[Number,String],default:"auto"},...yl(),...ht(),...Vl(),...aa(),...cl(),...Pa({tag:"footer"}),...wa()},"VFooter"),Kd=It()({name:"VFooter",props:qd(),setup(e,a){let{slots:l}=a
+const o=t.ref(),{themeClasses:n}=ka(e),{backgroundColorClasses:r,backgroundColorStyles:i}=ul(t.toRef(e,"color")),{borderClasses:s}=bl(e),{elevationClasses:u}=wl(e),{roundedClasses:c}=dl(e),d=t.shallowRef(32),{resizeRef:v}=Qt((e=>{e.length&&(d.value=e[0].target.clientHeight)})),p=t.computed((()=>"auto"===e.height?d.value:parseInt(e.height,10)))
+return ra((()=>e.app),(()=>{const a=oa({id:e.name,order:t.computed((()=>parseInt(e.order,10))),position:t.computed((()=>"bottom")),layoutSize:p,elementSize:t.computed((()=>"auto"===e.height?void 0:p.value)),active:t.computed((()=>e.app)),absolute:t.toRef(e,"absolute")})
+t.watchEffect((()=>{o.value=a.layoutItemStyles.value}))})),$t((()=>t.createVNode(e.tag,{ref:v,class:["v-footer",n.value,r.value,s.value,u.value,c.value,e.class],style:[i.value,e.app?o.value:{height:f(e.height)},e.style]},l))),{}}}),Xd=gt({...ht(),...sn()},"VForm"),Zd=It()({name:"VForm",props:Xd(),emits:{"update:modelValue":e=>!0,submit:e=>!0},setup(e,a){let{slots:l,emit:o}=a
+const n=function(e){const a=ia(e,"modelValue"),l=t.computed((()=>e.disabled)),o=t.computed((()=>e.readonly)),n=t.shallowRef(!1),r=t.ref([]),i=t.ref([])
+return t.watch(r,(()=>{let e=0,t=0
+const l=[]
+for(const a of r.value)!1===a.isValid?(t++,l.push({id:a.id,errorMessages:a.errorMessages})):!0===a.isValid&&e++
+i.value=l,a.value=!(t>0)&&(e===r.value.length||null)}),{deep:!0,flush:"post"}),t.provide(rn,{register:e=>{let{id:a,vm:l,validate:o,reset:n,resetValidation:i}=e
+r.value.some((e=>e.id===a))&&$e(`Duplicate input name "${a}"`),r.value.push({id:a,validate:o,reset:n,resetValidation:i,vm:t.markRaw(l),isValid:null,errorMessages:[]})},unregister:e=>{r.value=r.value.filter((t=>t.id!==e))},update:(e,t,a)=>{const l=r.value.find((t=>t.id===e))
+l&&(l.isValid=t,l.errorMessages=a)},isDisabled:l,isReadonly:o,isValidating:n,isValid:a,items:r,validateOn:t.toRef(e,"validateOn")}),{errors:i,isDisabled:l,isReadonly:o,isValidating:n,isValid:a,items:r,validate:async function(){const t=[]
+let a=!0
+i.value=[],n.value=!0
+for(const l of r.value){const o=await l.validate()
+if(o.length>0&&(a=!1,t.push({id:l.id,errorMessages:o})),!a&&e.fastFail)break}return i.value=t,n.value=!1,{valid:a,errors:i.value}},reset:function(){r.value.forEach((e=>e.reset()))},resetValidation:function(){r.value.forEach((e=>e.resetValidation()))}}}(e),r=t.ref()
+function i(e){e.preventDefault(),n.reset()}function s(e){const t=e,a=n.validate()
+t.then=a.then.bind(a),t.catch=a.catch.bind(a),t.finally=a.finally.bind(a),o("submit",t),t.defaultPrevented||a.then((e=>{let{valid:t}=e
+t&&r.value?.submit()})),t.preventDefault()}return $t((()=>t.createVNode("form",{ref:r,class:["v-form",e.class],style:e.style,novalidate:!0,onReset:i,onSubmit:s},[l.default?.(n)]))),di(n,r)}}),Qd=gt({disabled:Boolean,modelValue:{type:Boolean,default:null},...Wr()},"VHover"),Jd=It()({name:"VHover",props:Qd(),emits:{"update:modelValue":e=>!0},setup(e,t){let{slots:a}=t
+const l=ia(e,"modelValue"),{runOpenDelay:o,runCloseDelay:n}=Ur(e,(t=>!e.disabled&&(l.value=t)))
+return()=>a.default?.({isHovering:l.value,props:{onMouseenter:o,onMouseleave:n}})}}),ev=gt({color:String,direction:{type:String,default:"vertical",validator:e=>["vertical","horizontal"].includes(e)},side:{type:String,default:"end",validator:e=>["start","end","both"].includes(e)},mode:{type:String,default:"intersect",validator:e=>["intersect","manual"].includes(e)},margin:[Number,String],loadMoreText:{type:String,default:"$vuetify.infiniteScroll.loadMore"},emptyText:{type:String,default:"$vuetify.infiniteScroll.empty"},...ll(),...Pa()},"VInfiniteScroll"),tv=_t({name:"VInfiniteScrollIntersect",props:{side:{type:String,required:!0},rootMargin:String},emits:{intersect:(e,t)=>!0},setup(e,a){let{emit:l}=a
+const{intersectionRef:o,isIntersecting:n}=Zl()
+return t.watch(n,(async t=>{l("intersect",e.side,t)})),$t((()=>t.createVNode("div",{class:"v-infinite-scroll-intersect",style:{"--v-infinite-margin-size":e.rootMargin},ref:o},[t.createTextVNode(" ")]))),{}}}),av=It()({name:"VInfiniteScroll",props:ev(),emits:{load:e=>!0},setup(e,a){let{slots:l,emit:o}=a
+const n=t.ref(),r=t.shallowRef("ok"),i=t.shallowRef("ok"),s=t.computed((()=>f(e.margin))),u=t.shallowRef(!1)
+function c(t){if(!n.value)return
+const a="vertical"===e.direction?"scrollTop":"scrollLeft"
+n.value[a]=t}function d(){if(!n.value)return 0
+const t="vertical"===e.direction?"scrollHeight":"scrollWidth"
+return n.value[t]}function v(e,t){"start"===e?r.value=t:"end"===e&&(i.value=t)}t.onMounted((()=>{n.value&&("start"===e.side?c(d()):"both"===e.side&&c(d()/2-function(){if(!n.value)return 0
+const t="vertical"===e.direction?"clientHeight":"clientWidth"
+return n.value[t]}()/2))}))
+let p=0
+function m(e,t){u.value=t,u.value&&g(e)}function g(a){if("manual"!==e.mode&&!u.value)return
+const l=function(e){return"start"===e?r.value:i.value}(a)
+n.value&&!["empty","loading"].includes(l)&&(p=d(),v(a,"loading"),o("load",{side:a,done:function(l){v(a,l),t.nextTick((()=>{"empty"!==l&&"error"!==l&&("ok"===l&&"start"===a&&c(d()-p+function(){if(!n.value)return 0
+const t="vertical"===e.direction?"scrollTop":"scrollLeft"
+return n.value[t]}()),"manual"!==e.mode&&t.nextTick((()=>{window.requestAnimationFrame((()=>{window.requestAnimationFrame((()=>{window.requestAnimationFrame((()=>{g(a)}))}))}))})))}))}}))}const{t:h}=ha()
+function y(a,o){if(e.side!==a&&"both"!==e.side)return
+const n=()=>g(a),r={side:a,props:{onClick:n,color:e.color}}
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+return $t((()=>t.createVNode("div",{ref:s,class:[o.value,e.class],style:[u.value,n.value,e.style]},[l.default?.()]))),{getLayoutItem:r,items:i}}}),cv=gt({position:{type:String,required:!0},size:{type:[Number,String],default:300},modelValue:Boolean,...ht(),...aa()},"VLayoutItem"),dv=It()({name:"VLayoutItem",props:cv(),setup(e,a){let{slots:l}=a
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+const{rtlClasses:o}=ya(e)
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+const o=St(),n=t.computed((()=>e.id||`trendline-${o}`)),r=t.computed((()=>Number(e.autoDrawDuration)||(e.fill?500:2e3))),i=t.ref(0),s=t.ref(null)
+function u(t,a){const{minX:l,maxX:o,minY:n,maxY:r}=a,i=t.length,s=null!=e.max?Number(e.max):Math.max(...t),u=null!=e.min?Number(e.min):Math.min(...t),c=(o-l)/(i-1),d=(r-n)/(s-u||1)
+return t.map(((e,t)=>({x:l+t*c,y:r-(e-u)*d,value:e})))}const c=t.computed((()=>Boolean(e.showLabels||e.labels.length>0||!!l?.label))),d=t.computed((()=>parseFloat(e.lineWidth)||4)),p=t.computed((()=>Number(e.width))),f=t.computed((()=>{const t=Number(e.padding)
+return{minX:t,maxX:p.value-t,minY:t,maxY:parseInt(e.height,10)-t}})),m=t.computed((()=>e.modelValue.map((t=>v(t,e.itemValue,t))))),g=t.computed((()=>{const t=[],a=u(m.value,f.value),l=a.length
+for(let o=0;t.length<l;o++){const l=a[o]
+let n=e.labels[o]
+n||(n="object"==typeof l?l.value:l),t.push({x:l.x,value:String(n)})}return t}))
+function h(t){const a="boolean"==typeof e.smooth?e.smooth?8:0:Number(e.smooth)
+return Jv(u(m.value,f.value),a,t,parseInt(e.height,10))}t.watch((()=>e.modelValue),(async()=>{if(await t.nextTick(),!e.autoDraw||!s.value)return
+const a=s.value,l=a.getTotalLength()
+e.fill?(a.style.transformOrigin="bottom center",a.style.transition="none",a.style.transform="scaleY(0)",a.getBoundingClientRect(),a.style.transition=`transform ${r.value}ms ${e.autoDrawEasing}`,a.style.transform="scaleY(1)"):(a.style.strokeDasharray=`${l}`,a.style.strokeDashoffset=`${l}`,a.getBoundingClientRect(),a.style.transition=`stroke-dashoffset ${r.value}ms ${e.autoDrawEasing}`,a.style.strokeDashoffset="0"),i.value=l}),{immediate:!0}),$t((()=>{const a=e.gradient.slice().length?e.gradient.slice().reverse():[""]
+return t.createVNode("svg",{display:"block","stroke-width":parseFloat(e.lineWidth)??4},[t.createVNode("defs",null,[t.createVNode("linearGradient",{id:n.value,gradientUnits:"userSpaceOnUse",x1:"left"===e.gradientDirection?"100%":"0",y1:"top"===e.gradientDirection?"100%":"0",x2:"right"===e.gradientDirection?"100%":"0",y2:"bottom"===e.gradientDirection?"100%":"0"},[a.map(((e,l)=>t.createVNode("stop",{offset:l/Math.max(a.length-1,1),"stop-color":e||"currentColor"},null)))])]),c.value&&t.createVNode("g",{key:"labels",style:{textAnchor:"middle",dominantBaseline:"mathematical",fill:"currentColor"}},[g.value.map(((a,o)=>t.createVNode("text",{x:a.x+d.value/2+d.value/2,y:parseInt(e.height,10)-4+(parseInt(e.labelSize,10)||5.25),"font-size":Number(e.labelSize)||7},[l.label?.({index:o,value:a.value})??a.value])))]),t.createVNode("path",{ref:s,d:h(e.fill),fill:e.fill?`url(#${n.value})`:"none",stroke:e.fill?"none":`url(#${n.value})`},null),e.fill&&t.createVNode("path",{d:h(!1),fill:"none",stroke:e.color??e.gradient?.[0]},null)])}))}}),np=gt({type:{type:String,default:"trend"},...Zv(),...lp()},"VSparkline"),rp=It()({name:"VSparkline",props:np(),setup(e,a){let{slots:l}=a
+const{textColorClasses:o,textColorStyles:n}=sl(t.toRef(e,"color")),r=t.computed((()=>Boolean(e.showLabels||e.labels.length>0||!!l?.label))),i=t.computed((()=>{let t=parseInt(e.height,10)
+return r.value&&(t+=1.5*parseInt(e.labelSize,10)),t}))
+$t((()=>{const a="trend"===e.type?op:Qv,r="trend"===e.type?op.filterProps(e):Qv.filterProps(e)
+return t.createVNode(a,t.mergeProps({key:e.type,class:o.value,style:n.value,viewBox:`0 0 ${e.width} ${parseInt(i.value,10)}`},r),l)}))}}),ip=gt({...ht(),...vi({offset:8,minWidth:0,openDelay:0,closeDelay:100,location:"top center",transition:"scale-transition"})},"VSpeedDial"),sp=It()({name:"VSpeedDial",props:ip(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const o=ia(e,"modelValue"),n=t.ref(),r=t.computed((()=>{const[t,a="center"]=e.location?.split(" ")??[]
+return`${t} ${a}`})),i=t.computed((()=>({[`v-speed-dial__content--${r.value.replace(" ","-")}`]:!0})))
+return $t((()=>{const a=pi.filterProps(e)
+return t.createVNode(pi,t.mergeProps(a,{modelValue:o.value,"onUpdate:modelValue":e=>o.value=e,class:e.class,style:e.style,contentClass:["v-speed-dial__content",i.value,e.contentClass],location:r.value,ref:n,transition:"fade-transition"}),{...l,default:a=>t.createVNode(al,{defaults:{VBtn:{size:"small"}}},{default:()=>[t.createVNode(pl,{appear:!0,group:!0,transition:e.transition},{default:()=>[l.default?.(a)]})]})})})),{}}}),up=Symbol.for("vuetify:v-stepper"),cp=gt({color:String,disabled:{type:[Boolean,String],default:!1},prevText:{type:String,default:"$vuetify.stepper.prev"},nextText:{type:String,default:"$vuetify.stepper.next"}},"VStepperActions"),dp=It()({name:"VStepperActions",props:cp(),emits:{"click:prev":()=>!0,"click:next":()=>!0},setup(e,a){let{emit:l,slots:o}=a
+const{t:n}=ha()
+function r(){l("click:prev")}function i(){l("click:next")}return $t((()=>{const a={onClick:r},l={onClick:i}
+return t.createVNode("div",{class:"v-stepper-actions"},[t.createVNode(al,{defaults:{VBtn:{disabled:["prev",!0].includes(e.disabled),text:n(e.prevText),variant:"text"}}},{default:()=>[o.prev?.({props:a})??t.createVNode(Eo,a,null)]}),t.createVNode(al,{defaults:{VBtn:{color:e.color,disabled:["next",!0].includes(e.disabled),text:n(e.nextText),variant:"tonal"}}},{default:()=>[o.next?.({props:l})??t.createVNode(Eo,l,null)]})])})),{}}}),vp=Pt("v-stepper-header"),pp=gt({color:String,title:String,subtitle:String,complete:Boolean,completeIcon:{type:Mt,default:"$complete"},editable:Boolean,editIcon:{type:Mt,default:"$edit"},error:Boolean,errorIcon:{type:Mt,default:"$error"},icon:Mt,ripple:{type:[Boolean,Object],default:!0},rules:{type:Array,default:()=>[]}},"StepperItem"),fp=gt({...pp(),...Ol()},"VStepperItem"),mp=It()({name:"VStepperItem",directives:{Ripple:To},props:fp(),emits:{"group:selected":e=>!0},setup(e,a){let{slots:l}=a
+const o=Ll(e,up,!0),n=t.computed((()=>o?.value.value??e.value)),r=t.computed((()=>e.rules.every((e=>!0===e())))),i=t.computed((()=>!e.disabled&&e.editable)),s=t.computed((()=>!e.disabled&&e.editable)),u=t.computed((()=>e.error||!r.value)),c=t.computed((()=>e.complete||e.rules.length>0&&r.value)),d=t.computed((()=>u.value?e.errorIcon:c.value?e.completeIcon:o.isSelected.value&&e.editable?e.editIcon:e.icon)),v=t.computed((()=>({canEdit:s.value,hasError:u.value,hasCompleted:c.value,title:e.title,subtitle:e.subtitle,step:n.value,value:e.value})))
+return $t((()=>{const a=(!o||o.isSelected.value||c.value||s.value)&&!u.value&&!e.disabled,r=!(null==e.title&&!l.title),p=!(null==e.subtitle&&!l.subtitle)
+return t.withDirectives(t.createVNode("button",{class:["v-stepper-item",{"v-stepper-item--complete":c.value,"v-stepper-item--disabled":e.disabled,"v-stepper-item--error":u.value},o?.selectedClass.value],disabled:!e.editable,type:"button",onClick:function(){o?.toggle()}},[i.value&&Tl(!0,"v-stepper-item"),t.createVNode(Wo,{key:"stepper-avatar",class:"v-stepper-item__avatar",color:a?e.color:void 0,size:24},{default:()=>[l.icon?.(v.value)??(d.value?t.createVNode(Xl,{icon:d.value},null):n.value)]}),t.createVNode("div",{class:"v-stepper-item__content"},[r&&t.createVNode("div",{key:"title",class:"v-stepper-item__title"},[l.title?.(v.value)??e.title]),p&&t.createVNode("div",{key:"subtitle",class:"v-stepper-item__subtitle"},[l.subtitle?.(v.value)??e.subtitle]),l.default?.(v.value)])]),[[t.resolveDirective("ripple"),e.ripple&&e.editable,null]])})),{}}}),gp=gt({...x(Vs(),["continuous","nextIcon","prevIcon","showArrows","touch","mandatory"])},"VStepperWindow"),hp=It()({name:"VStepperWindow",props:gp(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const o=t.inject(up,null),n=ia(e,"modelValue"),r=t.computed({get:()=>null==n.value&&o?o.items.value.find((e=>o.selected.value.includes(e.id)))?.value:n.value,set(e){n.value=e}})
+return $t((()=>{const a=ws.filterProps(e)
+return t.createVNode(ws,t.mergeProps({_as:"VStepperWindow"},a,{modelValue:r.value,"onUpdate:modelValue":e=>r.value=e,class:["v-stepper-window",e.class],style:e.style,mandatory:!1,touch:!1}),l)})),{}}}),yp=gt({...xs()},"VStepperWindowItem"),bp=It()({name:"VStepperWindowItem",props:yp(),setup(e,a){let{slots:l}=a
+return $t((()=>{const a=Ns.filterProps(e)
+return t.createVNode(Ns,t.mergeProps({_as:"VStepperWindowItem"},a,{class:["v-stepper-window-item",e.class],style:e.style}),l)})),{}}}),Vp=gt({altLabels:Boolean,bgColor:String,completeIcon:Mt,editIcon:Mt,editable:Boolean,errorIcon:Mt,hideActions:Boolean,items:{type:Array,default:()=>[]},itemTitle:{type:String,default:"title"},itemValue:{type:String,default:"value"},nonLinear:Boolean,flat:Boolean,...kn()},"Stepper"),wp=gt({...Vp(),...Ml({mandatory:"force",selectedClass:"v-stepper-item--selected"}),...Qs(),...N(cp(),["prevText","nextText"])},"VStepper"),Sp=It()({name:"VStepper",props:wp(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const{items:o,next:n,prev:r,selected:i}=zl(e,up),{displayClasses:s,mobile:u}=xn(e),{completeIcon:c,editIcon:d,errorIcon:p,color:f,editable:m,prevText:g,nextText:h}=t.toRefs(e),y=t.computed((()=>e.items.map(((t,a)=>({title:v(t,e.itemTitle,t),value:v(t,e.itemValue,a+1),raw:t}))))),b=t.computed((()=>o.value.findIndex((e=>i.value.includes(e.id)))))
+return Nt({VStepperItem:{editable:m,errorIcon:p,completeIcon:c,editIcon:d,prevText:g,nextText:h},VStepperActions:{color:f,disabled:t.computed((()=>e.disabled?e.disabled:0===b.value?"prev":b.value===o.value.length-1&&"next")),prevText:g,nextText:h}}),$t((()=>{const a=Js.filterProps(e),o=!(!l.header&&!e.items.length),i=e.items.length>0,c=!(e.hideActions||!i&&!l.actions)
+return t.createVNode(Js,t.mergeProps(a,{color:e.bgColor,class:["v-stepper",{"v-stepper--alt-labels":e.altLabels,"v-stepper--flat":e.flat,"v-stepper--non-linear":e.nonLinear,"v-stepper--mobile":u.value},s.value,e.class],style:e.style}),{default:()=>[o&&t.createVNode(vp,{key:"stepper-header"},{default:()=>[y.value.map(((e,a)=>{let{raw:o,...n}=e
+return t.createVNode(t.Fragment,null,[!!a&&t.createVNode(fr,null,null),t.createVNode(mp,n,{default:l[`header-item.${n.value}`]??l.header,icon:l.icon,title:l.title,subtitle:l.subtitle})])}))]}),i&&t.createVNode(hp,{key:"stepper-window"},{default:()=>[y.value.map((e=>t.createVNode(bp,{value:e.value},{default:()=>l[`item.${e.value}`]?.(e)??l.item?.(e)})))]}),l.default?.({prev:r,next:n}),c&&(l.actions?.({next:n,prev:r})??t.createVNode(dp,{key:"stepper-actions","onClick:prev":r,"onClick:next":n},l))]})})),{prev:r,next:n}}}),kp=gt({indeterminate:Boolean,inset:Boolean,flat:Boolean,loading:{type:[Boolean,String],default:!1},...vn(),...Zo()},"VSwitch"),xp=It()({name:"VSwitch",inheritAttrs:!1,props:kp(),emits:{"update:focused":e=>!0,"update:modelValue":e=>!0,"update:indeterminate":e=>!0},setup(e,l){let{attrs:o,slots:n}=l
+const r=ia(e,"indeterminate"),i=ia(e,"modelValue"),{loaderClasses:s}=ro(e),{isFocused:u,focus:c,blur:d}=nn(e),v=t.ref(),p=a&&window.matchMedia("(forced-colors: active)").matches,f=t.computed((()=>"string"==typeof e.loading&&""!==e.loading?e.loading:e.color)),m=St(),g=t.computed((()=>e.id||`switch-${m}`))
+function h(){r.value&&(r.value=!1)}function y(e){e.stopPropagation(),e.preventDefault(),v.value?.input?.click()}return $t((()=>{const[a,l]=B(o),m=pn.filterProps(e),b=Qo.filterProps(e)
+return t.createVNode(pn,t.mergeProps({class:["v-switch",{"v-switch--flat":e.flat},{"v-switch--inset":e.inset},{"v-switch--indeterminate":r.value},s.value,e.class]},a,m,{modelValue:i.value,"onUpdate:modelValue":e=>i.value=e,id:g.value,focused:u.value,style:e.style}),{...n,default:a=>{let{id:o,messagesId:s,isDisabled:u,isReadonly:m,isValid:g}=a
+const V={model:i,isValid:g}
+return t.createVNode(Qo,t.mergeProps({ref:v},b,{modelValue:i.value,"onUpdate:modelValue":[e=>i.value=e,h],id:o.value,"aria-describedby":s.value,type:"checkbox","aria-checked":r.value?"mixed":void 0,disabled:u.value,readonly:m.value,onFocus:c,onBlur:d},l),{...n,default:e=>{let{backgroundColorClasses:a,backgroundColorStyles:l}=e
+return t.createVNode("div",{class:["v-switch__track",p?void 0:a.value],style:l.value,onClick:y},[n["track-true"]&&t.createVNode("div",{key:"prepend",class:"v-switch__track-true"},[n["track-true"](V)]),n["track-false"]&&t.createVNode("div",{key:"append",class:"v-switch__track-false"},[n["track-false"](V)])])},input:a=>{let{inputNode:l,icon:o,backgroundColorClasses:r,backgroundColorStyles:i}=a
+return t.createVNode(t.Fragment,null,[l,t.createVNode("div",{class:["v-switch__thumb",{"v-switch__thumb--filled":o||e.loading},e.inset||p?void 0:r.value],style:e.inset?void 0:i.value},[n.thumb?t.createVNode(al,{defaults:{VIcon:{icon:o,size:"x-small"}}},{default:()=>[n.thumb({...V,icon:o})]}):t.createVNode(Wa,null,{default:()=>[e.loading?t.createVNode(io,{name:"v-switch",active:!0,color:!1===g.value?void 0:f.value},{default:e=>n.loader?n.loader(e):t.createVNode(Jl,{active:e.isActive,color:e.color,indeterminate:!0,size:"16",width:"2"},null)}):o&&t.createVNode(Xl,{key:String(o),icon:o,size:"x-small"},null)]})])])}})}})})),{}}}),Np=gt({color:String,height:[Number,String],window:Boolean,...ht(),...Vl(),...aa(),...cl(),...Pa(),...wa()},"VSystemBar"),Cp=It()({name:"VSystemBar",props:Np(),setup(e,a){let{slots:l}=a
+const{themeClasses:o}=ka(e),{backgroundColorClasses:n,backgroundColorStyles:r}=ul(t.toRef(e,"color")),{elevationClasses:i}=wl(e),{roundedClasses:s}=dl(e),{ssrBootStyles:u}=Cl(),c=t.computed((()=>e.height??(e.window?32:24))),{layoutItemStyles:d}=oa({id:e.name,order:t.computed((()=>parseInt(e.order,10))),position:t.shallowRef("top"),layoutSize:c,elementSize:c,active:t.computed((()=>!0)),absolute:t.toRef(e,"absolute")})
+return $t((()=>t.createVNode(e.tag,{class:["v-system-bar",{"v-system-bar--window":e.window},o.value,n.value,i.value,s.value,e.class],style:[r.value,d.value,u.value,e.style]},l))),{}}}),_p=Symbol.for("vuetify:v-tabs"),Ip=gt({fixed:Boolean,sliderColor:String,hideSlider:Boolean,direction:{type:String,default:"horizontal"},...x(Do({selectedClass:"v-tab--selected",variant:"text"}),["active","block","flat","location","position","symbol"])},"VTab"),Pp=It()({name:"VTab",props:Ip(),setup(e,a){let{slots:l,attrs:o}=a
+const{textColorClasses:n,textColorStyles:r}=sl(e,"sliderColor"),i=t.ref(),s=t.ref(),u=t.computed((()=>"horizontal"===e.direction)),c=t.computed((()=>i.value?.group?.isSelected.value??!1))
+function d(e){let{value:t}=e
+if(t){const e=i.value?.$el.parentElement?.querySelector(".v-tab--selected .v-tab__slider"),t=s.value
+if(!e||!t)return
+const a=getComputedStyle(e).color,l=e.getBoundingClientRect(),o=t.getBoundingClientRect(),n=u.value?"x":"y",r=u.value?"X":"Y",c=u.value?"right":"bottom",d=u.value?"width":"height",v=l[n]>o[n]?l[c]-o[c]:l[n]-o[n],p=Math.sign(v)>0?u.value?"right":"bottom":Math.sign(v)<0?u.value?"left":"top":"center",f=(Math.abs(v)+(Math.sign(v)<0?l[d]:o[d]))/Math.max(l[d],o[d])||0,m=1.5
+he(t,{backgroundColor:[a,"currentcolor"],transform:[`translate${r}(${v}px) scale${r}(${l[d]/o[d]||0})`,`translate${r}(${v/m}px) scale${r}(${(f-1)/m+1})`,"none"],transformOrigin:Array(3).fill(p)},{duration:225,easing:At})}}return $t((()=>{const a=Eo.filterProps(e)
+return t.createVNode(Eo,t.mergeProps({symbol:_p,ref:i,class:["v-tab",e.class],style:e.style,tabindex:c.value?0:-1,role:"tab","aria-selected":String(c.value),active:!1},a,o,{block:e.fixed,maxWidth:e.fixed?300:void 0,"onGroup:selected":d}),{...l,default:()=>t.createVNode(t.Fragment,null,[l.default?.()??e.text,!e.hideSlider&&t.createVNode("div",{ref:s,class:["v-tab__slider",n.value],style:r.value},null)])})})),di({},i)}}),Bp=gt({...x(Vs(),["continuous","nextIcon","prevIcon","showArrows","touch","mandatory"])},"VTabsWindow"),Ap=It()({name:"VTabsWindow",props:Bp(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const o=t.inject(_p,null),n=ia(e,"modelValue"),r=t.computed({get:()=>null==n.value&&o?o.items.value.find((e=>o.selected.value.includes(e.id)))?.value:n.value,set(e){n.value=e}})
+return $t((()=>{const a=ws.filterProps(e)
+return t.createVNode(ws,t.mergeProps({_as:"VTabsWindow"},a,{modelValue:r.value,"onUpdate:modelValue":e=>r.value=e,class:["v-tabs-window",e.class],style:e.style,mandatory:!1,touch:!1}),l)})),{}}}),Rp=gt({...xs()},"VTabsWindowItem"),Tp=It()({name:"VTabsWindowItem",props:Rp(),setup(e,a){let{slots:l}=a
+return $t((()=>{const a=Ns.filterProps(e)
+return t.createVNode(Ns,t.mergeProps({_as:"VTabsWindowItem"},a,{class:["v-tabs-window-item",e.class],style:e.style}),l)})),{}}})
+const Dp=gt({alignTabs:{type:String,default:"start"},color:String,fixedTabs:Boolean,items:{type:Array,default:()=>[]},stacked:Boolean,bgColor:String,grow:Boolean,height:{type:[Number,String],default:void 0},hideSlider:Boolean,sliderColor:String,...En({mandatory:"force",selectedClass:"v-tab-item--selected"}),...Bl(),...Pa()},"VTabs"),Ep=It()({name:"VTabs",props:Dp(),emits:{"update:modelValue":e=>!0},setup(e,a){let{attrs:l,slots:o}=a
+const n=ia(e,"modelValue"),r=t.computed((()=>function(e){return e?e.map((e=>m(e)?e:{text:e,value:e})):[]}(e.items))),{densityClasses:i}=Al(e),{backgroundColorClasses:s,backgroundColorStyles:u}=ul(t.toRef(e,"bgColor")),{scopeId:c}=Qr()
+return Nt({VTab:{color:t.toRef(e,"color"),direction:t.toRef(e,"direction"),stacked:t.toRef(e,"stacked"),fixed:t.toRef(e,"fixedTabs"),sliderColor:t.toRef(e,"sliderColor"),hideSlider:t.toRef(e,"hideSlider")}}),$t((()=>{const a=Fn.filterProps(e),d=!!(o.window||e.items.length>0)
+return t.createVNode(t.Fragment,null,[t.createVNode(Fn,t.mergeProps(a,{modelValue:n.value,"onUpdate:modelValue":e=>n.value=e,class:["v-tabs",`v-tabs--${e.direction}`,`v-tabs--align-tabs-${e.alignTabs}`,{"v-tabs--fixed-tabs":e.fixedTabs,"v-tabs--grow":e.grow,"v-tabs--stacked":e.stacked},i.value,s.value,e.class],style:[{"--v-tabs-height":f(e.height)},u.value,e.style],role:"tablist",symbol:_p},c,l),{default:()=>[o.default?.()??r.value.map((e=>o.tab?.({item:e})??t.createVNode(Pp,t.mergeProps(e,{key:e.text,value:e.value}),{default:o[`tab.${e.value}`]?()=>o[`tab.${e.value}`]?.({item:e}):void 0})))]}),d&&t.createVNode(Ap,t.mergeProps({modelValue:n.value,"onUpdate:modelValue":e=>n.value=e,key:"tabs-window"},c),{default:()=>[r.value.map((e=>o.item?.({item:e})??t.createVNode(Tp,{value:e.value},{default:()=>o[`item.${e.value}`]?.({item:e})}))),o.window?.()]})])})),{}}}),Fp=gt({autoGrow:Boolean,autofocus:Boolean,counter:[Boolean,Number,String],counterValue:Function,prefix:String,placeholder:String,persistentPlaceholder:Boolean,persistentCounter:Boolean,noResize:Boolean,rows:{type:[Number,String],default:5,validator:e=>!isNaN(parseFloat(e))},maxRows:{type:[Number,String],validator:e=>!isNaN(parseFloat(e))},suffix:String,modelModifiers:Object,...vn(),...bi()},"VTextarea"),$p=It()({name:"VTextarea",directives:{Intersect:ml},inheritAttrs:!1,props:Fp(),emits:{"click:control":e=>!0,"mousedown:control":e=>!0,"update:focused":e=>!0,"update:modelValue":e=>!0},setup(e,a){let{attrs:l,emit:o,slots:n}=a
+const r=ia(e,"modelValue"),{isFocused:i,focus:s,blur:u}=nn(e),c=t.computed((()=>"function"==typeof e.counterValue?e.counterValue(r.value):(r.value||"").toString().length)),d=t.computed((()=>l.maxlength?l.maxlength:!e.counter||"number"!=typeof e.counter&&"string"!=typeof e.counter?void 0:e.counter))
+function v(t,a){e.autofocus&&t&&a[0].target?.focus?.()}const p=t.ref(),m=t.ref(),g=t.shallowRef(""),h=t.ref(),y=t.computed((()=>e.persistentPlaceholder||i.value||e.active))
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+function _(){e.autoGrow&&t.nextTick((()=>{if(!x.value||!m.value)return
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+N.value=Math.floor((r-l)/n),g.value=f(r)}))}let I
+return t.watchEffect((()=>{e.autoGrow||(N.value=+e.rows)})),t.onMounted(_),t.watch(r,_),t.watch((()=>e.rows),_),t.watch((()=>e.maxRows),_),t.watch((()=>e.density),_),t.watch(x,(e=>{e?(I=new ResizeObserver(_),I.observe(x.value)):I?.disconnect()})),t.onBeforeUnmount((()=>{I?.disconnect()})),$t((()=>{const a=!!(n.counter||e.counter||e.counterValue),o=!(!a&&!n.details),[s,f]=B(l),{modelValue:_,...I}=pn.filterProps(e),P=wi(e)
+return t.createVNode(pn,t.mergeProps({ref:p,modelValue:r.value,"onUpdate:modelValue":e=>r.value=e,class:["v-textarea v-text-field",{"v-textarea--prefixed":e.prefix,"v-textarea--suffixed":e.suffix,"v-text-field--prefixed":e.prefix,"v-text-field--suffixed":e.suffix,"v-textarea--auto-grow":e.autoGrow,"v-textarea--no-resize":e.noResize||e.autoGrow,"v-input--plain-underlined":C.value},e.class],style:e.style},s,I,{centerAffix:1===N.value&&!C.value,focused:i.value}),{...n,default:a=>{let{id:l,isDisabled:o,isDirty:s,isReadonly:c,isValid:d}=a
+return t.createVNode(Vi,t.mergeProps({ref:m,style:{"--v-textarea-control-height":g.value},onClick:V,onMousedown:w,"onClick:clear":S,"onClick:prependInner":e["onClick:prependInner"],"onClick:appendInner":e["onClick:appendInner"]},P,{id:l.value,active:y.value||s.value,centerAffix:1===N.value&&!C.value,dirty:s.value||e.dirty,disabled:o.value,focused:i.value,error:!1===d.value}),{...n,default:a=>{let{props:{class:l,...n}}=a
+return t.createVNode(t.Fragment,null,[e.prefix&&t.createVNode("span",{class:"v-text-field__prefix"},[e.prefix]),t.withDirectives(t.createVNode("textarea",t.mergeProps({ref:h,class:l,value:r.value,onInput:k,autofocus:e.autofocus,readonly:c.value,disabled:o.value,placeholder:e.placeholder,rows:e.rows,name:e.name,onFocus:b,onBlur:u},n,f),null),[[t.resolveDirective("intersect"),{handler:v},null,{once:!0}]]),e.autoGrow&&t.withDirectives(t.createVNode("textarea",{class:[l,"v-textarea__sizer"],id:`${n.id}-sizer`,"onUpdate:modelValue":e=>r.value=e,ref:x,readonly:!0,"aria-hidden":"true"},null),[[t.vModelText,r.value]]),e.suffix&&t.createVNode("span",{class:"v-text-field__suffix"},[e.suffix])])}})},details:o?l=>t.createVNode(t.Fragment,null,[n.details?.(l),a&&t.createVNode(t.Fragment,null,[t.createVNode("span",null,null),t.createVNode(mi,{active:e.persistentCounter||i.value,value:c.value,max:d.value,disabled:e.disabled},n.counter)])]):void 0})})),di({},p,m,h)}}),Mp=gt({withBackground:Boolean,...ht(),...wa(),...Pa()},"VThemeProvider"),Op=It()({name:"VThemeProvider",props:Mp(),setup(e,a){let{slots:l}=a
+const{themeClasses:o}=ka(e)
+return()=>e.withBackground?t.createVNode(e.tag,{class:["v-theme-provider",o.value,e.class],style:e.style},{default:()=>[l.default?.()]}):l.default?.()}}),Lp=gt({dotColor:String,fillDot:Boolean,hideDot:Boolean,icon:Mt,iconColor:String,lineColor:String,...ht(),...cl(),...Gl(),...Vl()},"VTimelineDivider"),zp=It()({name:"VTimelineDivider",props:Lp(),setup(e,a){let{slots:l}=a
+const{sizeClasses:o,sizeStyles:n}=ql(e,"v-timeline-divider__dot"),{backgroundColorStyles:r,backgroundColorClasses:i}=ul(t.toRef(e,"dotColor")),{roundedClasses:s}=dl(e,"v-timeline-divider__dot"),{elevationClasses:u}=wl(e),{backgroundColorClasses:c,backgroundColorStyles:d}=ul(t.toRef(e,"lineColor"))
+return $t((()=>t.createVNode("div",{class:["v-timeline-divider",{"v-timeline-divider--fill-dot":e.fillDot},e.class],style:e.style},[t.createVNode("div",{class:["v-timeline-divider__before",c.value],style:d.value},null),!e.hideDot&&t.createVNode("div",{key:"dot",class:["v-timeline-divider__dot",u.value,s.value,o.value],style:n.value},[t.createVNode("div",{class:["v-timeline-divider__inner-dot",i.value,s.value],style:r.value},[l.default?t.createVNode(al,{key:"icon-defaults",disabled:!e.icon,defaults:{VIcon:{color:e.iconColor,icon:e.icon,size:e.size}}},l.default):t.createVNode(Xl,{key:"icon",color:e.iconColor,icon:e.icon,size:e.size},null)])]),t.createVNode("div",{class:["v-timeline-divider__after",c.value],style:d.value},null)]))),{}}}),jp=gt({density:String,dotColor:String,fillDot:Boolean,hideDot:Boolean,hideOpposite:{type:Boolean,default:void 0},icon:Mt,iconColor:String,lineInset:[Number,String],...ht(),...ll(),...Vl(),...cl(),...Gl(),...Pa()},"VTimelineItem"),Hp=It()({name:"VTimelineItem",props:jp(),setup(e,a){let{slots:l}=a
+const{dimensionStyles:o}=ol(e),n=t.shallowRef(0),r=t.ref()
+return t.watch(r,(e=>{e&&(n.value=e.$el.querySelector(".v-timeline-divider__dot")?.getBoundingClientRect().width??0)}),{flush:"post"}),$t((()=>t.createVNode("div",{class:["v-timeline-item",{"v-timeline-item--fill-dot":e.fillDot},e.class],style:[{"--v-timeline-dot-size":f(n.value),"--v-timeline-line-inset":e.lineInset?`calc(var(--v-timeline-dot-size) / 2 + ${f(e.lineInset)})`:f(0)},e.style]},[t.createVNode("div",{class:"v-timeline-item__body",style:o.value},[l.default?.()]),t.createVNode(zp,{ref:r,hideDot:e.hideDot,icon:e.icon,iconColor:e.iconColor,size:e.size,elevation:e.elevation,dotColor:e.dotColor,fillDot:e.fillDot,rounded:e.rounded},{default:l.icon}),"compact"!==e.density&&t.createVNode("div",{class:"v-timeline-item__opposite"},[!e.hideOpposite&&l.opposite?.()])]))),{}}}),Wp=gt({align:{type:String,default:"center",validator:e=>["center","start"].includes(e)},direction:{type:String,default:"vertical",validator:e=>["vertical","horizontal"].includes(e)},justify:{type:String,default:"auto",validator:e=>["auto","center"].includes(e)},side:{type:String,validator:e=>null==e||["start","end"].includes(e)},lineThickness:{type:[String,Number],default:2},lineColor:String,truncateLine:{type:String,validator:e=>["start","end","both"].includes(e)},...N(jp({lineInset:0}),["dotColor","fillDot","hideOpposite","iconColor","lineInset","size"]),...ht(),...Bl(),...Pa(),...wa()},"VTimeline"),Up=It()({name:"VTimeline",props:Wp(),setup(e,a){let{slots:l}=a
+const{themeClasses:o}=ka(e),{densityClasses:n}=Al(e),{rtlClasses:r}=ba()
+Nt({VTimelineDivider:{lineColor:t.toRef(e,"lineColor")},VTimelineItem:{density:t.toRef(e,"density"),dotColor:t.toRef(e,"dotColor"),fillDot:t.toRef(e,"fillDot"),hideOpposite:t.toRef(e,"hideOpposite"),iconColor:t.toRef(e,"iconColor"),lineColor:t.toRef(e,"lineColor"),lineInset:t.toRef(e,"lineInset"),size:t.toRef(e,"size")}})
+const i=t.computed((()=>{const t=e.side?e.side:"default"!==e.density?"end":null
+return t&&`v-timeline--side-${t}`})),s=t.computed((()=>{const t=["v-timeline--truncate-line-start","v-timeline--truncate-line-end"]
+switch(e.truncateLine){case"both":return t
+case"start":return t[0]
+case"end":return t[1]
+default:return null}}))
+return $t((()=>t.createVNode(e.tag,{class:["v-timeline",`v-timeline--${e.direction}`,`v-timeline--align-${e.align}`,`v-timeline--justify-${e.justify}`,s.value,{"v-timeline--inset-line":!!e.lineInset},o.value,n.value,i.value,r.value,e.class],style:[{"--v-timeline-line-thickness":f(e.lineThickness)},e.style]},l))),{}}}),Yp=gt({...ht(),...Dl({variant:"text"})},"VToolbarItems"),Gp=It()({name:"VToolbarItems",props:Yp(),setup(e,a){let{slots:l}=a
+return Nt({VBtn:{color:t.toRef(e,"color"),height:"inherit",variant:t.toRef(e,"variant")}}),$t((()=>t.createVNode("div",{class:["v-toolbar-items",e.class],style:e.style},[l.default?.()]))),{}}}),qp=gt({id:String,text:String,...x(ii({closeOnBack:!1,location:"end",locationStrategy:"connected",eager:!0,minWidth:0,offset:10,openOnClick:!1,openOnHover:!0,origin:"auto",scrim:!1,scrollStrategy:"reposition",transition:!1}),["absolute","persistent"])},"VTooltip"),Kp=It()({name:"VTooltip",props:qp(),emits:{"update:modelValue":e=>!0},setup(e,a){let{slots:l}=a
+const o=ia(e,"modelValue"),{scopeId:n}=Qr(),r=St(),i=t.computed((()=>e.id||`v-tooltip-${r}`)),s=t.ref(),u=t.computed((()=>e.location.split(" ").length>1?e.location:e.location+" center")),c=t.computed((()=>"auto"===e.origin||"overlap"===e.origin||e.origin.split(" ").length>1||e.location.split(" ").length>1?e.origin:e.origin+" center")),d=t.computed((()=>e.transition?e.transition:o.value?"scale-transition":"fade-transition")),v=t.computed((()=>t.mergeProps({"aria-describedby":i.value},e.activatorProps)))
+return $t((()=>{const a=si.filterProps(e)
+return t.createVNode(si,t.mergeProps({ref:s,class:["v-tooltip",e.class],style:e.style,id:i.value},a,{modelValue:o.value,"onUpdate:modelValue":e=>o.value=e,transition:d.value,absolute:!0,location:u.value,origin:c.value,persistent:!0,role:"tooltip",activatorProps:v.value,_disableGlobalStack:!0},n),{activator:l.activator,default:function(){for(var t=arguments.length,a=new Array(t),o=0;o<t;o++)a[o]=arguments[o]
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+const l=dn(e,"validation")
+return()=>a.default?.(l)}})
+var Zp=Object.freeze({__proto__:null,VAlert:jo,VAlertTitle:Oo,VApp:Ia,VAppBar:Il,VAppBarNavIcon:$o,VAppBarTitle:Mo,VAutocomplete:Oi,VAvatar:Wo,VBadge:zi,VBanner:Yi,VBannerActions:Hi,VBannerText:Wi,VBottomNavigation:qi,VBottomSheet:Qi,VBreadcrumbs:os,VBreadcrumbsDivider:es,VBreadcrumbsItem:as,VBtn:Eo,VBtnGroup:$l,VBtnToggle:Ul,VCard:fs,VCardActions:ns,VCardItem:cs,VCardSubtitle:is,VCardText:vs,VCardTitle:ss,VCarousel:ks,VCarouselItem:_s,VCheckbox:mn,VCheckboxBtn:en,VChip:zn,VChipGroup:On,VClassIcon:Wt,VCode:Is,VCol:Xc,VColorPicker:eu,VCombobox:au,VComponentIcon:zt,VConfirmEdit:bu,VContainer:jc,VCounter:mi,VDataIterator:tc,VDataTable:Fc,VDataTableFooter:nc,VDataTableHeaders:Sc,VDataTableRow:Cc,VDataTableRows:Ic,VDataTableServer:Lc,VDataTableVirtual:Mc,VDatePicker:Ad,VDatePickerControls:gd,VDatePickerHeader:yd,VDatePickerMonth:Sd,VDatePickerMonths:xd,VDatePickerYears:Cd,VDefaultsProvider:al,VDialog:Xi,VDialogBottomTransition:za,VDialogTopTransition:ja,VDialogTransition:$a,VDivider:fr,VEmptyState:Td,VExpandTransition:Ja,VExpandXTransition:el,VExpansionPanel:Ld,VExpansionPanelText:Fd,VExpansionPanelTitle:Md,VExpansionPanels:Hd,VFab:Ud,VFabTransition:La,VFadeTransition:Ha,VField:Vi,VFieldLabel:hi,VFileInput:Gd,VFooter:Kd,VForm:Zd,VHover:Jd,VIcon:Xl,VImg:hl,VInfiniteScroll:av,VInput:pn,VItem:rv,VItemGroup:nv,VKbd:iv,VLabel:Yo,VLayout:uv,VLayoutItem:dv,VLazy:pv,VLigatureIcon:Ht,VList:xr,VListGroup:nr,VListImg:Nr,VListItem:cr,VListItemAction:_r,VListItemMedia:Pr,VListItemSubtitle:ir,VListItemTitle:sr,VListSubheader:vr,VLocaleProvider:mv,VMain:hv,VMenu:pi,VMessages:ln,VNavigationDrawer:Cv,VNoSsr:_v,VOtpInput:Pv,VOverlay:si,VPagination:lc,VParallax:Av,VProgressCircular:Jl,VProgressLinear:oo,VRadio:Tv,VRadioGroup:Ev,VRangeSlider:$v,VRating:Ov,VResponsive:rl,VRow:pd,VScaleTransition:Wa,VScrollXReverseTransition:Ya,VScrollXTransition:Ua,VScrollYReverseTransition:qa,VScrollYTransition:Ga,VSelect:Di,VSelectionControl:Qo,VSelectionControlGroup:Xo,VSheet:Js,VSkeletonLoader:Yv,VSlideGroup:Fn,VSlideGroupItem:Gv,VSlideXReverseTransition:Xa,VSlideXTransition:Ka,VSlideYReverseTransition:Qa,VSlideYTransition:Za,VSlider:Gs,VSnackbar:Kv,VSpacer:fd,VSparkline:rp,VSpeedDial:sp,VStepper:Sp,VStepperActions:dp,VStepperHeader:vp,VStepperItem:mp,VStepperWindow:hp,VStepperWindowItem:bp,VSvgIcon:jt,VSwitch:xp,VSystemBar:Cp,VTab:Pp,VTable:Bc,VTabs:Ep,VTabsWindow:Ap,VTabsWindowItem:Tp,VTextField:xi,VTextarea:$p,VThemeProvider:Op,VTimeline:Up,VTimelineItem:Hp,VToolbar:xl,VToolbarItems:Gp,VToolbarTitle:Aa,VTooltip:Kp,VValidation:Xp,VVirtualScroll:Bi,VWindow:ws,VWindowItem:Ns})
+function Qp(e,t){e._mutate?.[t.instance.$.uid]&&(e._mutate[t.instance.$.uid].observer.disconnect(),delete e._mutate[t.instance.$.uid])}const Jp={mounted:function(e,t){const a=t.modifiers||{},l=t.value,{once:o,immediate:n,...r}=a,i=!Object.keys(r).length,{handler:s,options:u}="object"==typeof l?l:{handler:l,options:{attributes:r?.attr??i,characterData:r?.char??i,childList:r?.child??i,subtree:r?.sub??i}},c=new MutationObserver((function(){let a=arguments.length>0&&void 0!==arguments[0]?arguments[0]:[],l=arguments.length>1?arguments[1]:void 0
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+n&&s?.([],c),e._mutate=Object(e._mutate),e._mutate[t.instance.$.uid]={observer:c},c.observe(e,u)},unmounted:Qp}
+const ef={mounted:function(e,t){const a=t.value,l={passive:!t.modifiers?.active}
+window.addEventListener("resize",a,l),e._onResize=Object(e._onResize),e._onResize[t.instance.$.uid]={handler:a,options:l},t.modifiers?.quiet||a()},unmounted:function(e,t){if(!e._onResize?.[t.instance.$.uid])return
+const{handler:a,options:l}=e._onResize[t.instance.$.uid]
+window.removeEventListener("resize",a,l),delete e._onResize[t.instance.$.uid]}}
+function tf(e,t){const{self:a=!1}=t.modifiers??{},l=t.value,o="object"==typeof l&&l.options||{passive:!0},n="function"==typeof l||"handleEvent"in l?l:l.handler,r=a?e:t.arg?document.querySelector(t.arg):window
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+const{handler:a,options:l,target:o=e}=e._onScroll[t.instance.$.uid]
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+const of=function(e,a){const l=function(e,a){return function(l,o,n){const r="function"==typeof a?a(o):a,i=o.value?.text??o.value??r?.text,s=m(o.value)?o.value:{},u=()=>i??l.textContent,c=(n.ctx===o.instance.$?function(e,t){const a=new Set,l=t=>{for(const o of t){if(!o)continue
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+if(a.add(o),o.suspense?t=l([o.ssContent]):Array.isArray(o.children)?t=l(o.children):o.component?.vnode&&(t=l([o.component?.subTree])),t)return t
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+if(!l([t.subTree]))return Me("Could not find original vnode, component will not inherit provides"),t
+const o=Array.from(a).reverse()
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+var nf=Object.freeze({__proto__:null,ClickOutside:ni,Intersect:ml,Mutate:Jp,Resize:ef,Ripple:To,Scroll:lf,Tooltip:of,Touch:hs})
+function rf(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{}
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+return{install:e=>{for(const t in s)e.directive(t,s[t])
+for(const t in i)e.component(t,i[t])
+for(const t in r)e.component(t,_t({...r[t],name:t,aliasName:r[t].name}))
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+return t.nextTick((()=>c.update())),e.mount=a,l}}St.reset(),("boolean"!=typeof __VUE_OPTIONS_API__||__VUE_OPTIONS_API__)&&e.mixin({computed:{$vuetify(){return t.reactive({defaults:sf.call(this,kt),display:sf.call(this,hn),theme:sf.call(this,Va),icons:sf.call(this,Ot),locale:sf.call(this,ma),date:sf.call(this,mu)})}}})},defaults:u,display:c,theme:d,icons:v,locale:p,date:f,goTo:m}}function sf(e){const t=this.$,a=t.parent?.provides??t.vnode.appContext?.provides
+if(a&&e in a)return a[e]}rf.version="3.7.7"
+const uf=function(){return rf({components:Zp,directives:nf,...arguments.length>0&&void 0!==arguments[0]?arguments[0]:{}})},cf="3.7.7"
+uf.version=cf,e.blueprints=Zt,e.components=Zp,e.createVuetify=uf,e.directives=nf,e.useDate=hu,e.useDefaults=function(){let e=arguments.length>0&&void 0!==arguments[0]?arguments[0]:{},t=arguments.length>1?arguments[1]:void 0
+const{props:a,provideSubDefaults:l}=Ct(e,t)
+return l(),a},e.useDisplay=xn,e.useGoTo=Pn,e.useLayout=la,e.useLocale=ha,e.useRtl=ba,e.useTheme=xa,e.version=cf}))
+//# sourceMappingURL=vuetify.min.js.map