updating project to use latest threejs; switch to npm package management; switching to use vite

.gitignore

@@ -1,2 +1,2 @@
-.DS_Store
-threejs/
+node_modules/
+dist/

js/Bee.js

@@ -1,4 +1,4 @@
-import * as THREE from '../threejs/build/three.module.js';
+import * as THREE from 'three';
 import { Hive } from '../js/Hive.js';
 
 export class Bee {
@@ -18,7 +18,7 @@ export class Bee {
         this.swarm = 0;
     }
     static async loadGeo() {
-        return new THREE.IcosahedronBufferGeometry(3, 0);
+        return new THREE.IcosahedronGeometry(3, 0);
     }
     static async loadMat() {
         return new THREE.MeshPhongMaterial({ color: 0xcccc00 });

js/Flower.js

@@ -1,5 +1,5 @@
-import * as THREE from '../threejs/build/three.module.js';
-import { GLTFLoader } from '../threejs/examples/jsm/loaders/GLTFLoader.js';
+import * as THREE from 'three';
+import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';
 export class Flower {
 
     static collection = [];
@@ -35,7 +35,7 @@ export class Flower {
         this.model.traverse(function (node) {
             if (node.isMesh) { node.castShadow = true; node.receiveShadow = true; }
         });
-
+        
         this.position.z = 100;
     }
 

js/Hive.js

@@ -1,5 +1,5 @@
-import * as THREE from '../threejs/build/three.module.js';
-import { GLTFLoader } from '../threejs/examples/jsm/loaders/GLTFLoader.js';
+import * as THREE from 'three';
+import { GLTFLoader } from 'three/examples/jsm/loaders/GLTFLoader.js';
 import { Bee } from './Bee.js';
 import { Waypoint } from './Waypoint.js';
 

js/Waypoint.js

@@ -1,9 +1,9 @@
-import * as THREE from '../threejs/build/three.module.js';
+import * as THREE from 'three';
 import { Hive } from './Hive.js';
 
-import { LineMaterial } from '../threejs/examples/jsm/lines/LineMaterial.js';
-import { LineGeometry } from '../threejs/examples/jsm/lines/LineGeometry.js';
-import { Line2 } from '../threejs/examples/jsm/lines/Line2.js';
+import { LineMaterial } from 'three/examples/jsm/lines/LineMaterial.js';
+import { LineGeometry } from 'three/examples/jsm/lines/LineGeometry.js';
+import { Line2 } from 'three/examples/jsm/lines/Line2.js';
 
 export class Waypoint {
 

js/main.js

@@ -1,4 +1,4 @@
-import * as THREE from '../threejs/build/three.module.js';
+import * as THREE from 'three';
 import { KeyCode } from './KeyCode.js';
 import { Bee } from './Bee.js';
 import { Hive } from './Hive.js';
@@ -38,12 +38,15 @@ function init() {
     intersects = [];
 
     // renderer
-    renderer = new THREE.WebGLRenderer();
+    renderer = new THREE.WebGLRenderer({
+        antialias: true,
+    });
     renderer.setPixelRatio(window.devicePixelRatio);
     renderer.setSize(WIDTH, HEIGHT);
     renderer.shadowMap.enabled = true;
     renderer.shadowMap.type = THREE.PCFSoftShadowMap;
-    renderer.outputEncoding = THREE.sRGBEncoding;
+    renderer.outputColorSpace = THREE.SRGBColorSpace;
+    renderer.alias
 
     // scene
     scene = new THREE.Scene();
@@ -79,7 +82,7 @@ function fillScene() {
     //ground
     let textureLoader = new THREE.TextureLoader();
     let lawnTex = textureLoader.load("textures/lawn.jpg");
-    var planeGeo = new THREE.PlaneBufferGeometry(1000, 1000, 32, 32);
+    var planeGeo = new THREE.PlaneGeometry(1000, 1000, 32, 32);
     let floorMat = new THREE.MeshPhongMaterial({ map: lawnTex });
     floorMat.flatShading = true;
     floorMat.shininess = 0;
@@ -92,19 +95,28 @@ function fillScene() {
 
     // lights
 
-    var sunlight = new THREE.PointLight(0xffffff, 0.8, 0, 2);
+    var sunlight = new THREE.DirectionalLight(0xffffff, 2.8, 0, 2);
     sunlight.position.x = 400;
     sunlight.position.y = 400;
     sunlight.position.z = 100;
-    sunlight.castShadow = true;
-    sunlight.shadow.camera.far = 1600;
+    const shadowSize = 1000
+    sunlight.castShadow = true
+    sunlight.shadow.camera.left = -shadowSize
+    sunlight.shadow.camera.right = shadowSize
+    sunlight.shadow.camera.top = -shadowSize
+    sunlight.shadow.camera.bottom = shadowSize
+    sunlight.shadow.camera.far = 800
+    sunlight.shadow.mapSize.width = Math.min(renderer.capabilities.maxTextureSize, 2048)
+    sunlight.shadow.mapSize.height = Math.min(renderer.capabilities.maxTextureSize, 2048)
+    sunlight.shadow.bias = -0.005
+    sunlight.shadow.radius = 6
+    //sunlight.shadow.camera.far = 1600;
     scene.add(sunlight);
 
     var mainLight = new THREE.HemisphereLight(0xB1E1FF, 0xB97A20, 0.6);
     mainLight.position.x = 1;
     mainLight.position.y = 1;
     mainLight.position.z = 1;
-    // mainLight.castShadow = true;
     mainLight.lookAt(0, 0, 0);
     scene.add(mainLight);
 
@@ -171,7 +183,7 @@ function render() {
 
 function update() {
 
-    requestAnimationFrame(update);
+    window.requestAnimationFrame(update);
 
     var delta = clock.getDelta();
     var timer = Date.now();
@@ -209,7 +221,8 @@ function update() {
         camera.focusTarget.add(vector);
     }
 
-    var rotation = THREE.Math.degToRad(6);
+    
+    var rotation = (6/180) * Math.PI
 
     let cameraOffset = new THREE.Vector3(camera.offset.x, camera.offset.y, camera.offset.z);
     if (keys[KeyCode.Q]) {

package-lock.json

@@ -0,0 +1,789 @@
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+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "honeycomb",
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "three": "^0.170.0",
+        "vite": "^5.4.11"
+      }
+    },
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+      ],
+      "optional": true,
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+        "aix"
+      ],
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+}

package.json

@@ -0,0 +1,17 @@
+{
+  "name": "honeycomb",
+  "version": "1.0.0",
+  "description": "=====\r A cute simplified 4x conquest game about bees",
+  "main": "index.js",
+  "scripts": {
+    "start": "vite",
+    "build": "vite build",
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "three": "^0.170.0",
+    "vite": "^5.4.11"
+  }
+}

threejs/examples/jsm/controls/OrbitControls.js

@@ -1,1229 +0,0 @@
-import {
-	EventDispatcher,
-	MOUSE,
-	Quaternion,
-	Spherical,
-	TOUCH,
-	Vector2,
-	Vector3
-} from "../../../build/three.module.js";
-
-// This set of controls performs orbiting, dollying (zooming), and panning.
-// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
-//
-//    Orbit - left mouse / touch: one-finger move
-//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
-//    Pan - right mouse, or left mouse + ctrl/meta/shiftKey, or arrow keys / touch: two-finger move
-
-var OrbitControls = function ( object, domElement ) {
-
-	if ( domElement === undefined ) console.warn( 'THREE.OrbitControls: The second parameter "domElement" is now mandatory.' );
-	if ( domElement === document ) console.error( 'THREE.OrbitControls: "document" should not be used as the target "domElement". Please use "renderer.domElement" instead.' );
-
-	this.object = object;
-	this.domElement = domElement;
-
-	// Set to false to disable this control
-	this.enabled = true;
-
-	// "target" sets the location of focus, where the object orbits around
-	this.target = new Vector3();
-
-	// How far you can dolly in and out ( PerspectiveCamera only )
-	this.minDistance = 0;
-	this.maxDistance = Infinity;
-
-	// How far you can zoom in and out ( OrthographicCamera only )
-	this.minZoom = 0;
-	this.maxZoom = Infinity;
-
-	// How far you can orbit vertically, upper and lower limits.
-	// Range is 0 to Math.PI radians.
-	this.minPolarAngle = 0; // radians
-	this.maxPolarAngle = Math.PI; // radians
-
-	// How far you can orbit horizontally, upper and lower limits.
-	// If set, the interval [ min, max ] must be a sub-interval of [ - 2 PI, 2 PI ], with ( max - min < 2 PI )
-	this.minAzimuthAngle = - Infinity; // radians
-	this.maxAzimuthAngle = Infinity; // radians
-
-	// Set to true to enable damping (inertia)
-	// If damping is enabled, you must call controls.update() in your animation loop
-	this.enableDamping = false;
-	this.dampingFactor = 0.05;
-
-	// This option actually enables dollying in and out; left as "zoom" for backwards compatibility.
-	// Set to false to disable zooming
-	this.enableZoom = true;
-	this.zoomSpeed = 1.0;
-
-	// Set to false to disable rotating
-	this.enableRotate = true;
-	this.rotateSpeed = 1.0;
-
-	// Set to false to disable panning
-	this.enablePan = true;
-	this.panSpeed = 1.0;
-	this.screenSpacePanning = true; // if false, pan orthogonal to world-space direction camera.up
-	this.keyPanSpeed = 7.0;	// pixels moved per arrow key push
-
-	// Set to true to automatically rotate around the target
-	// If auto-rotate is enabled, you must call controls.update() in your animation loop
-	this.autoRotate = false;
-	this.autoRotateSpeed = 2.0; // 30 seconds per round when fps is 60
-
-	// Set to false to disable use of the keys
-	this.enableKeys = true;
-
-	// The four arrow keys
-	this.keys = { LEFT: 37, UP: 38, RIGHT: 39, BOTTOM: 40 };
-
-	// Mouse buttons
-	this.mouseButtons = { LEFT: MOUSE.ROTATE, MIDDLE: MOUSE.DOLLY, RIGHT: MOUSE.PAN };
-
-	// Touch fingers
-	this.touches = { ONE: TOUCH.ROTATE, TWO: TOUCH.DOLLY_PAN };
-
-	// for reset
-	this.target0 = this.target.clone();
-	this.position0 = this.object.position.clone();
-	this.zoom0 = this.object.zoom;
-
-	//
-	// public methods
-	//
-
-	this.getPolarAngle = function () {
-
-		return spherical.phi;
-
-	};
-
-	this.getAzimuthalAngle = function () {
-
-		return spherical.theta;
-
-	};
-
-	this.saveState = function () {
-
-		scope.target0.copy( scope.target );
-		scope.position0.copy( scope.object.position );
-		scope.zoom0 = scope.object.zoom;
-
-	};
-
-	this.reset = function () {
-
-		scope.target.copy( scope.target0 );
-		scope.object.position.copy( scope.position0 );
-		scope.object.zoom = scope.zoom0;
-
-		scope.object.updateProjectionMatrix();
-		scope.dispatchEvent( changeEvent );
-
-		scope.update();
-
-		state = STATE.NONE;
-
-	};
-
-	// this method is exposed, but perhaps it would be better if we can make it private...
-	this.update = function () {
-
-		var offset = new Vector3();
-
-		// so camera.up is the orbit axis
-		var quat = new Quaternion().setFromUnitVectors( object.up, new Vector3( 0, 1, 0 ) );
-		var quatInverse = quat.clone().inverse();
-
-		var lastPosition = new Vector3();
-		var lastQuaternion = new Quaternion();
-
-		var twoPI = 2 * Math.PI;
-
-		return function update() {
-
-			var position = scope.object.position;
-
-			offset.copy( position ).sub( scope.target );
-
-			// rotate offset to "y-axis-is-up" space
-			offset.applyQuaternion( quat );
-
-			// angle from z-axis around y-axis
-			spherical.setFromVector3( offset );
-
-			if ( scope.autoRotate && state === STATE.NONE ) {
-
-				rotateLeft( getAutoRotationAngle() );
-
-			}
-
-			if ( scope.enableDamping ) {
-
-				spherical.theta += sphericalDelta.theta * scope.dampingFactor;
-				spherical.phi += sphericalDelta.phi * scope.dampingFactor;
-
-			} else {
-
-				spherical.theta += sphericalDelta.theta;
-				spherical.phi += sphericalDelta.phi;
-
-			}
-
-			// restrict theta to be between desired limits
-
-			var min = scope.minAzimuthAngle;
-			var max = scope.maxAzimuthAngle;
-
-			if ( isFinite( min ) && isFinite( max ) ) {
-
-				if ( min < - Math.PI ) min += twoPI; else if ( min > Math.PI ) min -= twoPI;
-
-				if ( max < - Math.PI ) max += twoPI; else if ( max > Math.PI ) max -= twoPI;
-
-				if ( min < max ) {
-
-					spherical.theta = Math.max( min, Math.min( max, spherical.theta ) );
-
-				} else {
-
-					spherical.theta = ( spherical.theta > ( min + max ) / 2 ) ?
-						Math.max( min, spherical.theta ) :
-						Math.min( max, spherical.theta );
-
-				}
-
-			}
-
-			// restrict phi to be between desired limits
-			spherical.phi = Math.max( scope.minPolarAngle, Math.min( scope.maxPolarAngle, spherical.phi ) );
-
-			spherical.makeSafe();
-
-
-			spherical.radius *= scale;
-
-			// restrict radius to be between desired limits
-			spherical.radius = Math.max( scope.minDistance, Math.min( scope.maxDistance, spherical.radius ) );
-
-			// move target to panned location
-
-			if ( scope.enableDamping === true ) {
-
-				scope.target.addScaledVector( panOffset, scope.dampingFactor );
-
-			} else {
-
-				scope.target.add( panOffset );
-
-			}
-
-			offset.setFromSpherical( spherical );
-
-			// rotate offset back to "camera-up-vector-is-up" space
-			offset.applyQuaternion( quatInverse );
-
-			position.copy( scope.target ).add( offset );
-
-			scope.object.lookAt( scope.target );
-
-			if ( scope.enableDamping === true ) {
-
-				sphericalDelta.theta *= ( 1 - scope.dampingFactor );
-				sphericalDelta.phi *= ( 1 - scope.dampingFactor );
-
-				panOffset.multiplyScalar( 1 - scope.dampingFactor );
-
-			} else {
-
-				sphericalDelta.set( 0, 0, 0 );
-
-				panOffset.set( 0, 0, 0 );
-
-			}
-
-			scale = 1;
-
-			// update condition is:
-			// min(camera displacement, camera rotation in radians)^2 > EPS
-			// using small-angle approximation cos(x/2) = 1 - x^2 / 8
-
-			if ( zoomChanged ||
-				lastPosition.distanceToSquared( scope.object.position ) > EPS ||
-				8 * ( 1 - lastQuaternion.dot( scope.object.quaternion ) ) > EPS ) {
-
-				scope.dispatchEvent( changeEvent );
-
-				lastPosition.copy( scope.object.position );
-				lastQuaternion.copy( scope.object.quaternion );
-				zoomChanged = false;
-
-				return true;
-
-			}
-
-			return false;
-
-		};
-
-	}();
-
-	this.dispose = function () {
-
-		scope.domElement.removeEventListener( 'contextmenu', onContextMenu, false );
-
-		scope.domElement.removeEventListener( 'pointerdown', onPointerDown, false );
-		scope.domElement.removeEventListener( 'wheel', onMouseWheel, false );
-
-		scope.domElement.removeEventListener( 'touchstart', onTouchStart, false );
-		scope.domElement.removeEventListener( 'touchend', onTouchEnd, false );
-		scope.domElement.removeEventListener( 'touchmove', onTouchMove, false );
-
-		scope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );
-		scope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp, false );
-
-		scope.domElement.removeEventListener( 'keydown', onKeyDown, false );
-
-		//scope.dispatchEvent( { type: 'dispose' } ); // should this be added here?
-
-	};
-
-	//
-	// internals
-	//
-
-	var scope = this;
-
-	var changeEvent = { type: 'change' };
-	var startEvent = { type: 'start' };
-	var endEvent = { type: 'end' };
-
-	var STATE = {
-		NONE: - 1,
-		ROTATE: 0,
-		DOLLY: 1,
-		PAN: 2,
-		TOUCH_ROTATE: 3,
-		TOUCH_PAN: 4,
-		TOUCH_DOLLY_PAN: 5,
-		TOUCH_DOLLY_ROTATE: 6
-	};
-
-	var state = STATE.NONE;
-
-	var EPS = 0.000001;
-
-	// current position in spherical coordinates
-	var spherical = new Spherical();
-	var sphericalDelta = new Spherical();
-
-	var scale = 1;
-	var panOffset = new Vector3();
-	var zoomChanged = false;
-
-	var rotateStart = new Vector2();
-	var rotateEnd = new Vector2();
-	var rotateDelta = new Vector2();
-
-	var panStart = new Vector2();
-	var panEnd = new Vector2();
-	var panDelta = new Vector2();
-
-	var dollyStart = new Vector2();
-	var dollyEnd = new Vector2();
-	var dollyDelta = new Vector2();
-
-	function getAutoRotationAngle() {
-
-		return 2 * Math.PI / 60 / 60 * scope.autoRotateSpeed;
-
-	}
-
-	function getZoomScale() {
-
-		return Math.pow( 0.95, scope.zoomSpeed );
-
-	}
-
-	function rotateLeft( angle ) {
-
-		sphericalDelta.theta -= angle;
-
-	}
-
-	function rotateUp( angle ) {
-
-		sphericalDelta.phi -= angle;
-
-	}
-
-	var panLeft = function () {
-
-		var v = new Vector3();
-
-		return function panLeft( distance, objectMatrix ) {
-
-			v.setFromMatrixColumn( objectMatrix, 0 ); // get X column of objectMatrix
-			v.multiplyScalar( - distance );
-
-			panOffset.add( v );
-
-		};
-
-	}();
-
-	var panUp = function () {
-
-		var v = new Vector3();
-
-		return function panUp( distance, objectMatrix ) {
-
-			if ( scope.screenSpacePanning === true ) {
-
-				v.setFromMatrixColumn( objectMatrix, 1 );
-
-			} else {
-
-				v.setFromMatrixColumn( objectMatrix, 0 );
-				v.crossVectors( scope.object.up, v );
-
-			}
-
-			v.multiplyScalar( distance );
-
-			panOffset.add( v );
-
-		};
-
-	}();
-
-	// deltaX and deltaY are in pixels; right and down are positive
-	var pan = function () {
-
-		var offset = new Vector3();
-
-		return function pan( deltaX, deltaY ) {
-
-			var element = scope.domElement;
-
-			if ( scope.object.isPerspectiveCamera ) {
-
-				// perspective
-				var position = scope.object.position;
-				offset.copy( position ).sub( scope.target );
-				var targetDistance = offset.length();
-
-				// half of the fov is center to top of screen
-				targetDistance *= Math.tan( ( scope.object.fov / 2 ) * Math.PI / 180.0 );
-
-				// we use only clientHeight here so aspect ratio does not distort speed
-				panLeft( 2 * deltaX * targetDistance / element.clientHeight, scope.object.matrix );
-				panUp( 2 * deltaY * targetDistance / element.clientHeight, scope.object.matrix );
-
-			} else if ( scope.object.isOrthographicCamera ) {
-
-				// orthographic
-				panLeft( deltaX * ( scope.object.right - scope.object.left ) / scope.object.zoom / element.clientWidth, scope.object.matrix );
-				panUp( deltaY * ( scope.object.top - scope.object.bottom ) / scope.object.zoom / element.clientHeight, scope.object.matrix );
-
-			} else {
-
-				// camera neither orthographic nor perspective
-				console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - pan disabled.' );
-				scope.enablePan = false;
-
-			}
-
-		};
-
-	}();
-
-	function dollyOut( dollyScale ) {
-
-		if ( scope.object.isPerspectiveCamera ) {
-
-			scale /= dollyScale;
-
-		} else if ( scope.object.isOrthographicCamera ) {
-
-			scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom * dollyScale ) );
-			scope.object.updateProjectionMatrix();
-			zoomChanged = true;
-
-		} else {
-
-			console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
-			scope.enableZoom = false;
-
-		}
-
-	}
-
-	function dollyIn( dollyScale ) {
-
-		if ( scope.object.isPerspectiveCamera ) {
-
-			scale *= dollyScale;
-
-		} else if ( scope.object.isOrthographicCamera ) {
-
-			scope.object.zoom = Math.max( scope.minZoom, Math.min( scope.maxZoom, scope.object.zoom / dollyScale ) );
-			scope.object.updateProjectionMatrix();
-			zoomChanged = true;
-
-		} else {
-
-			console.warn( 'WARNING: OrbitControls.js encountered an unknown camera type - dolly/zoom disabled.' );
-			scope.enableZoom = false;
-
-		}
-
-	}
-
-	//
-	// event callbacks - update the object state
-	//
-
-	function handleMouseDownRotate( event ) {
-
-		rotateStart.set( event.clientX, event.clientY );
-
-	}
-
-	function handleMouseDownDolly( event ) {
-
-		dollyStart.set( event.clientX, event.clientY );
-
-	}
-
-	function handleMouseDownPan( event ) {
-
-		panStart.set( event.clientX, event.clientY );
-
-	}
-
-	function handleMouseMoveRotate( event ) {
-
-		rotateEnd.set( event.clientX, event.clientY );
-
-		rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );
-
-		var element = scope.domElement;
-
-		rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height
-
-		rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );
-
-		rotateStart.copy( rotateEnd );
-
-		scope.update();
-
-	}
-
-	function handleMouseMoveDolly( event ) {
-
-		dollyEnd.set( event.clientX, event.clientY );
-
-		dollyDelta.subVectors( dollyEnd, dollyStart );
-
-		if ( dollyDelta.y > 0 ) {
-
-			dollyOut( getZoomScale() );
-
-		} else if ( dollyDelta.y < 0 ) {
-
-			dollyIn( getZoomScale() );
-
-		}
-
-		dollyStart.copy( dollyEnd );
-
-		scope.update();
-
-	}
-
-	function handleMouseMovePan( event ) {
-
-		panEnd.set( event.clientX, event.clientY );
-
-		panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );
-
-		pan( panDelta.x, panDelta.y );
-
-		panStart.copy( panEnd );
-
-		scope.update();
-
-	}
-
-	function handleMouseUp( /*event*/ ) {
-
-		// no-op
-
-	}
-
-	function handleMouseWheel( event ) {
-
-		if ( event.deltaY < 0 ) {
-
-			dollyIn( getZoomScale() );
-
-		} else if ( event.deltaY > 0 ) {
-
-			dollyOut( getZoomScale() );
-
-		}
-
-		scope.update();
-
-	}
-
-	function handleKeyDown( event ) {
-
-		var needsUpdate = false;
-
-		switch ( event.keyCode ) {
-
-			case scope.keys.UP:
-				pan( 0, scope.keyPanSpeed );
-				needsUpdate = true;
-				break;
-
-			case scope.keys.BOTTOM:
-				pan( 0, - scope.keyPanSpeed );
-				needsUpdate = true;
-				break;
-
-			case scope.keys.LEFT:
-				pan( scope.keyPanSpeed, 0 );
-				needsUpdate = true;
-				break;
-
-			case scope.keys.RIGHT:
-				pan( - scope.keyPanSpeed, 0 );
-				needsUpdate = true;
-				break;
-
-		}
-
-		if ( needsUpdate ) {
-
-			// prevent the browser from scrolling on cursor keys
-			event.preventDefault();
-
-			scope.update();
-
-		}
-
-
-	}
-
-	function handleTouchStartRotate( event ) {
-
-		if ( event.touches.length == 1 ) {
-
-			rotateStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
-
-		} else {
-
-			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
-			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
-
-			rotateStart.set( x, y );
-
-		}
-
-	}
-
-	function handleTouchStartPan( event ) {
-
-		if ( event.touches.length == 1 ) {
-
-			panStart.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
-
-		} else {
-
-			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
-			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
-
-			panStart.set( x, y );
-
-		}
-
-	}
-
-	function handleTouchStartDolly( event ) {
-
-		var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
-		var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
-
-		var distance = Math.sqrt( dx * dx + dy * dy );
-
-		dollyStart.set( 0, distance );
-
-	}
-
-	function handleTouchStartDollyPan( event ) {
-
-		if ( scope.enableZoom ) handleTouchStartDolly( event );
-
-		if ( scope.enablePan ) handleTouchStartPan( event );
-
-	}
-
-	function handleTouchStartDollyRotate( event ) {
-
-		if ( scope.enableZoom ) handleTouchStartDolly( event );
-
-		if ( scope.enableRotate ) handleTouchStartRotate( event );
-
-	}
-
-	function handleTouchMoveRotate( event ) {
-
-		if ( event.touches.length == 1 ) {
-
-			rotateEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
-
-		} else {
-
-			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
-			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
-
-			rotateEnd.set( x, y );
-
-		}
-
-		rotateDelta.subVectors( rotateEnd, rotateStart ).multiplyScalar( scope.rotateSpeed );
-
-		var element = scope.domElement;
-
-		rotateLeft( 2 * Math.PI * rotateDelta.x / element.clientHeight ); // yes, height
-
-		rotateUp( 2 * Math.PI * rotateDelta.y / element.clientHeight );
-
-		rotateStart.copy( rotateEnd );
-
-	}
-
-	function handleTouchMovePan( event ) {
-
-		if ( event.touches.length == 1 ) {
-
-			panEnd.set( event.touches[ 0 ].pageX, event.touches[ 0 ].pageY );
-
-		} else {
-
-			var x = 0.5 * ( event.touches[ 0 ].pageX + event.touches[ 1 ].pageX );
-			var y = 0.5 * ( event.touches[ 0 ].pageY + event.touches[ 1 ].pageY );
-
-			panEnd.set( x, y );
-
-		}
-
-		panDelta.subVectors( panEnd, panStart ).multiplyScalar( scope.panSpeed );
-
-		pan( panDelta.x, panDelta.y );
-
-		panStart.copy( panEnd );
-
-	}
-
-	function handleTouchMoveDolly( event ) {
-
-		var dx = event.touches[ 0 ].pageX - event.touches[ 1 ].pageX;
-		var dy = event.touches[ 0 ].pageY - event.touches[ 1 ].pageY;
-
-		var distance = Math.sqrt( dx * dx + dy * dy );
-
-		dollyEnd.set( 0, distance );
-
-		dollyDelta.set( 0, Math.pow( dollyEnd.y / dollyStart.y, scope.zoomSpeed ) );
-
-		dollyOut( dollyDelta.y );
-
-		dollyStart.copy( dollyEnd );
-
-	}
-
-	function handleTouchMoveDollyPan( event ) {
-
-		if ( scope.enableZoom ) handleTouchMoveDolly( event );
-
-		if ( scope.enablePan ) handleTouchMovePan( event );
-
-	}
-
-	function handleTouchMoveDollyRotate( event ) {
-
-		if ( scope.enableZoom ) handleTouchMoveDolly( event );
-
-		if ( scope.enableRotate ) handleTouchMoveRotate( event );
-
-	}
-
-	function handleTouchEnd( /*event*/ ) {
-
-		// no-op
-
-	}
-
-	//
-	// event handlers - FSM: listen for events and reset state
-	//
-
-	function onPointerDown( event ) {
-
-		if ( scope.enabled === false ) return;
-
-		switch ( event.pointerType ) {
-
-			case 'mouse':
-			case 'pen':
-				onMouseDown( event );
-				break;
-
-			// TODO touch
-
-		}
-
-	}
-
-	function onPointerMove( event ) {
-
-		if ( scope.enabled === false ) return;
-
-		switch ( event.pointerType ) {
-
-			case 'mouse':
-			case 'pen':
-				onMouseMove( event );
-				break;
-
-			// TODO touch
-
-		}
-
-	}
-
-	function onPointerUp( event ) {
-
-		if ( scope.enabled === false ) return;
-
-		switch ( event.pointerType ) {
-
-			case 'mouse':
-			case 'pen':
-				onMouseUp( event );
-				break;
-
-			// TODO touch
-
-		}
-
-	}
-
-	function onMouseDown( event ) {
-
-		// Prevent the browser from scrolling.
-		event.preventDefault();
-
-		// Manually set the focus since calling preventDefault above
-		// prevents the browser from setting it automatically.
-
-		scope.domElement.focus ? scope.domElement.focus() : window.focus();
-
-		var mouseAction;
-
-		switch ( event.button ) {
-
-			case 0:
-
-				mouseAction = scope.mouseButtons.LEFT;
-				break;
-
-			case 1:
-
-				mouseAction = scope.mouseButtons.MIDDLE;
-				break;
-
-			case 2:
-
-				mouseAction = scope.mouseButtons.RIGHT;
-				break;
-
-			default:
-
-				mouseAction = - 1;
-
-		}
-
-		switch ( mouseAction ) {
-
-			case MOUSE.DOLLY:
-
-				if ( scope.enableZoom === false ) return;
-
-				handleMouseDownDolly( event );
-
-				state = STATE.DOLLY;
-
-				break;
-
-			case MOUSE.ROTATE:
-
-				if ( event.ctrlKey || event.metaKey || event.shiftKey ) {
-
-					if ( scope.enablePan === false ) return;
-
-					handleMouseDownPan( event );
-
-					state = STATE.PAN;
-
-				} else {
-
-					if ( scope.enableRotate === false ) return;
-
-					handleMouseDownRotate( event );
-
-					state = STATE.ROTATE;
-
-				}
-
-				break;
-
-			case MOUSE.PAN:
-
-				if ( event.ctrlKey || event.metaKey || event.shiftKey ) {
-
-					if ( scope.enableRotate === false ) return;
-
-					handleMouseDownRotate( event );
-
-					state = STATE.ROTATE;
-
-				} else {
-
-					if ( scope.enablePan === false ) return;
-
-					handleMouseDownPan( event );
-
-					state = STATE.PAN;
-
-				}
-
-				break;
-
-			default:
-
-				state = STATE.NONE;
-
-		}
-
-		if ( state !== STATE.NONE ) {
-
-			scope.domElement.ownerDocument.addEventListener( 'pointermove', onPointerMove, false );
-			scope.domElement.ownerDocument.addEventListener( 'pointerup', onPointerUp, false );
-
-			scope.dispatchEvent( startEvent );
-
-		}
-
-	}
-
-	function onMouseMove( event ) {
-
-		if ( scope.enabled === false ) return;
-
-		event.preventDefault();
-
-		switch ( state ) {
-
-			case STATE.ROTATE:
-
-				if ( scope.enableRotate === false ) return;
-
-				handleMouseMoveRotate( event );
-
-				break;
-
-			case STATE.DOLLY:
-
-				if ( scope.enableZoom === false ) return;
-
-				handleMouseMoveDolly( event );
-
-				break;
-
-			case STATE.PAN:
-
-				if ( scope.enablePan === false ) return;
-
-				handleMouseMovePan( event );
-
-				break;
-
-		}
-
-	}
-
-	function onMouseUp( event ) {
-
-		if ( scope.enabled === false ) return;
-
-		handleMouseUp( event );
-
-		scope.domElement.ownerDocument.removeEventListener( 'pointermove', onPointerMove, false );
-		scope.domElement.ownerDocument.removeEventListener( 'pointerup', onPointerUp, false );
-
-		scope.dispatchEvent( endEvent );
-
-		state = STATE.NONE;
-
-	}
-
-	function onMouseWheel( event ) {
-
-		if ( scope.enabled === false || scope.enableZoom === false || ( state !== STATE.NONE && state !== STATE.ROTATE ) ) return;
-
-		event.preventDefault();
-		event.stopPropagation();
-
-		scope.dispatchEvent( startEvent );
-
-		handleMouseWheel( event );
-
-		scope.dispatchEvent( endEvent );
-
-	}
-
-	function onKeyDown( event ) {
-
-		if ( scope.enabled === false || scope.enableKeys === false || scope.enablePan === false ) return;
-
-		handleKeyDown( event );
-
-	}
-
-	function onTouchStart( event ) {
-
-		if ( scope.enabled === false ) return;
-
-		event.preventDefault(); // prevent scrolling
-
-		switch ( event.touches.length ) {
-
-			case 1:
-
-				switch ( scope.touches.ONE ) {
-
-					case TOUCH.ROTATE:
-
-						if ( scope.enableRotate === false ) return;
-
-						handleTouchStartRotate( event );
-
-						state = STATE.TOUCH_ROTATE;
-
-						break;
-
-					case TOUCH.PAN:
-
-						if ( scope.enablePan === false ) return;
-
-						handleTouchStartPan( event );
-
-						state = STATE.TOUCH_PAN;
-
-						break;
-
-					default:
-
-						state = STATE.NONE;
-
-				}
-
-				break;
-
-			case 2:
-
-				switch ( scope.touches.TWO ) {
-
-					case TOUCH.DOLLY_PAN:
-
-						if ( scope.enableZoom === false && scope.enablePan === false ) return;
-
-						handleTouchStartDollyPan( event );
-
-						state = STATE.TOUCH_DOLLY_PAN;
-
-						break;
-
-					case TOUCH.DOLLY_ROTATE:
-
-						if ( scope.enableZoom === false && scope.enableRotate === false ) return;
-
-						handleTouchStartDollyRotate( event );
-
-						state = STATE.TOUCH_DOLLY_ROTATE;
-
-						break;
-
-					default:
-
-						state = STATE.NONE;
-
-				}
-
-				break;
-
-			default:
-
-				state = STATE.NONE;
-
-		}
-
-		if ( state !== STATE.NONE ) {
-
-			scope.dispatchEvent( startEvent );
-
-		}
-
-	}
-
-	function onTouchMove( event ) {
-
-		if ( scope.enabled === false ) return;
-
-		event.preventDefault(); // prevent scrolling
-		event.stopPropagation();
-
-		switch ( state ) {
-
-			case STATE.TOUCH_ROTATE:
-
-				if ( scope.enableRotate === false ) return;
-
-				handleTouchMoveRotate( event );
-
-				scope.update();
-
-				break;
-
-			case STATE.TOUCH_PAN:
-
-				if ( scope.enablePan === false ) return;
-
-				handleTouchMovePan( event );
-
-				scope.update();
-
-				break;
-
-			case STATE.TOUCH_DOLLY_PAN:
-
-				if ( scope.enableZoom === false && scope.enablePan === false ) return;
-
-				handleTouchMoveDollyPan( event );
-
-				scope.update();
-
-				break;
-
-			case STATE.TOUCH_DOLLY_ROTATE:
-
-				if ( scope.enableZoom === false && scope.enableRotate === false ) return;
-
-				handleTouchMoveDollyRotate( event );
-
-				scope.update();
-
-				break;
-
-			default:
-
-				state = STATE.NONE;
-
-		}
-
-	}
-
-	function onTouchEnd( event ) {
-
-		if ( scope.enabled === false ) return;
-
-		handleTouchEnd( event );
-
-		scope.dispatchEvent( endEvent );
-
-		state = STATE.NONE;
-
-	}
-
-	function onContextMenu( event ) {
-
-		if ( scope.enabled === false ) return;
-
-		event.preventDefault();
-
-	}
-
-	//
-
-	scope.domElement.addEventListener( 'contextmenu', onContextMenu, false );
-
-	scope.domElement.addEventListener( 'pointerdown', onPointerDown, false );
-	scope.domElement.addEventListener( 'wheel', onMouseWheel, false );
-
-	scope.domElement.addEventListener( 'touchstart', onTouchStart, false );
-	scope.domElement.addEventListener( 'touchend', onTouchEnd, false );
-	scope.domElement.addEventListener( 'touchmove', onTouchMove, false );
-
-	scope.domElement.addEventListener( 'keydown', onKeyDown, false );
-
-	// make sure element can receive keys.
-
-	if ( scope.domElement.tabIndex === - 1 ) {
-
-		scope.domElement.tabIndex = 0;
-
-	}
-
-	// force an update at start
-
-	this.update();
-
-};
-
-OrbitControls.prototype = Object.create( EventDispatcher.prototype );
-OrbitControls.prototype.constructor = OrbitControls;
-
-
-// This set of controls performs orbiting, dollying (zooming), and panning.
-// Unlike TrackballControls, it maintains the "up" direction object.up (+Y by default).
-// This is very similar to OrbitControls, another set of touch behavior
-//
-//    Orbit - right mouse, or left mouse + ctrl/meta/shiftKey / touch: two-finger rotate
-//    Zoom - middle mouse, or mousewheel / touch: two-finger spread or squish
-//    Pan - left mouse, or arrow keys / touch: one-finger move
-
-var MapControls = function ( object, domElement ) {
-
-	OrbitControls.call( this, object, domElement );
-
-	this.screenSpacePanning = false; // pan orthogonal to world-space direction camera.up
-
-	this.mouseButtons.LEFT = MOUSE.PAN;
-	this.mouseButtons.RIGHT = MOUSE.ROTATE;
-
-	this.touches.ONE = TOUCH.PAN;
-	this.touches.TWO = TOUCH.DOLLY_ROTATE;
-
-};
-
-MapControls.prototype = Object.create( EventDispatcher.prototype );
-MapControls.prototype.constructor = MapControls;
-
-export { OrbitControls, MapControls };

threejs/examples/jsm/loaders/GLTFLoader.js

@@ -1,3768 +0,0 @@
-import {
-	AnimationClip,
-	Bone,
-	Box3,
-	BufferAttribute,
-	BufferGeometry,
-	CanvasTexture,
-	ClampToEdgeWrapping,
-	Color,
-	DirectionalLight,
-	DoubleSide,
-	FileLoader,
-	FrontSide,
-	Group,
-	ImageBitmapLoader,
-	InterleavedBuffer,
-	InterleavedBufferAttribute,
-	Interpolant,
-	InterpolateDiscrete,
-	InterpolateLinear,
-	Line,
-	LineBasicMaterial,
-	LineLoop,
-	LineSegments,
-	LinearFilter,
-	LinearMipmapLinearFilter,
-	LinearMipmapNearestFilter,
-	Loader,
-	LoaderUtils,
-	Material,
-	MathUtils,
-	Matrix4,
-	Mesh,
-	MeshBasicMaterial,
-	MeshPhysicalMaterial,
-	MeshStandardMaterial,
-	MirroredRepeatWrapping,
-	NearestFilter,
-	NearestMipmapLinearFilter,
-	NearestMipmapNearestFilter,
-	NumberKeyframeTrack,
-	Object3D,
-	OrthographicCamera,
-	PerspectiveCamera,
-	PointLight,
-	Points,
-	PointsMaterial,
-	PropertyBinding,
-	QuaternionKeyframeTrack,
-	RGBFormat,
-	RepeatWrapping,
-	Skeleton,
-	SkinnedMesh,
-	Sphere,
-	SpotLight,
-	TangentSpaceNormalMap,
-	TextureLoader,
-	TriangleFanDrawMode,
-	TriangleStripDrawMode,
-	Vector2,
-	Vector3,
-	VectorKeyframeTrack,
-	sRGBEncoding
-} from "../../../build/three.module.js";
-
-var GLTFLoader = ( function () {
-
-	function GLTFLoader( manager ) {
-
-		Loader.call( this, manager );
-
-		this.dracoLoader = null;
-		this.ddsLoader = null;
-		this.ktx2Loader = null;
-
-		this.pluginCallbacks = [];
-
-		this.register( function ( parser ) {
-
-			return new GLTFMaterialsClearcoatExtension( parser );
-
-		} );
-
-		this.register( function ( parser ) {
-
-			return new GLTFTextureBasisUExtension( parser );
-
-		} );
-
-		this.register( function ( parser ) {
-
-			return new GLTFMaterialsTransmissionExtension( parser );
-
-		} );
-
-		this.register( function ( parser ) {
-
-			return new GLTFLightsExtension( parser );
-
-		} );
-
-	}
-
-	GLTFLoader.prototype = Object.assign( Object.create( Loader.prototype ), {
-
-		constructor: GLTFLoader,
-
-		load: function ( url, onLoad, onProgress, onError ) {
-
-			var scope = this;
-
-			var resourcePath;
-
-			if ( this.resourcePath !== '' ) {
-
-				resourcePath = this.resourcePath;
-
-			} else if ( this.path !== '' ) {
-
-				resourcePath = 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 );
-
-			var _onError = function ( e ) {
-
-				if ( onError ) {
-
-					onError( e );
-
-				} else {
-
-					console.error( e );
-
-				}
-
-				scope.manager.itemError( url );
-				scope.manager.itemEnd( url );
-
-			};
-
-			var 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: function ( dracoLoader ) {
-
-			this.dracoLoader = dracoLoader;
-			return this;
-
-		},
-
-		setDDSLoader: function ( ddsLoader ) {
-
-			this.ddsLoader = ddsLoader;
-			return this;
-
-		},
-
-		setKTX2Loader: function ( ktx2Loader ) {
-
-			this.ktx2Loader = ktx2Loader;
-			return this;
-
-		},
-
-		register: function ( callback ) {
-
-			if ( this.pluginCallbacks.indexOf( callback ) === - 1 ) {
-
-				this.pluginCallbacks.push( callback );
-
-			}
-
-			return this;
-
-		},
-
-		unregister: function ( callback ) {
-
-			if ( this.pluginCallbacks.indexOf( callback ) !== - 1 ) {
-
-				this.pluginCallbacks.splice( this.pluginCallbacks.indexOf( callback ), 1 );
-
-			}
-
-			return this;
-
-		},
-
-		parse: function ( data, path, onLoad, onError ) {
-
-			var content;
-			var extensions = {};
-			var plugins = {};
-
-			if ( typeof data === 'string' ) {
-
-				content = data;
-
-			} else {
-
-				var magic = LoaderUtils.decodeText( 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;
-
-					}
-
-					content = extensions[ EXTENSIONS.KHR_BINARY_GLTF ].content;
-
-				} else {
-
-					content = LoaderUtils.decodeText( new Uint8Array( data ) );
-
-				}
-
-			}
-
-			var json = JSON.parse( content );
-
-			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;
-
-			}
-
-			var parser = new GLTFParser( json, {
-
-				path: path || this.resourcePath || '',
-				crossOrigin: this.crossOrigin,
-				manager: this.manager,
-				ktx2Loader: this.ktx2Loader
-
-			} );
-
-			parser.fileLoader.setRequestHeader( this.requestHeader );
-
-			for ( var i = 0; i < this.pluginCallbacks.length; i ++ ) {
-
-				var plugin = this.pluginCallbacks[ i ]( parser );
-				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 ( var i = 0; i < json.extensionsUsed.length; ++ i ) {
-
-					var extensionName = json.extensionsUsed[ i ];
-					var extensionsRequired = json.extensionsRequired || [];
-
-					switch ( extensionName ) {
-
-						case EXTENSIONS.KHR_MATERIALS_UNLIT:
-							extensions[ extensionName ] = new GLTFMaterialsUnlitExtension();
-							break;
-
-						case EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS:
-							extensions[ extensionName ] = new GLTFMaterialsPbrSpecularGlossinessExtension();
-							break;
-
-						case EXTENSIONS.KHR_DRACO_MESH_COMPRESSION:
-							extensions[ extensionName ] = new GLTFDracoMeshCompressionExtension( json, this.dracoLoader );
-							break;
-
-						case EXTENSIONS.MSFT_TEXTURE_DDS:
-							extensions[ extensionName ] = new GLTFTextureDDSExtension( this.ddsLoader );
-							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 );
-
-		}
-
-	} );
-
-	/* GLTFREGISTRY */
-
-	function GLTFRegistry() {
-
-		var 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 ***********/
-	/*********************************/
-
-	var 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_PBR_SPECULAR_GLOSSINESS: 'KHR_materials_pbrSpecularGlossiness',
-		KHR_MATERIALS_TRANSMISSION: 'KHR_materials_transmission',
-		KHR_MATERIALS_UNLIT: 'KHR_materials_unlit',
-		KHR_TEXTURE_BASISU: 'KHR_texture_basisu',
-		KHR_TEXTURE_TRANSFORM: 'KHR_texture_transform',
-		KHR_MESH_QUANTIZATION: 'KHR_mesh_quantization',
-		MSFT_TEXTURE_DDS: 'MSFT_texture_dds'
-	};
-
-	/**
-	 * DDS Texture Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Vendor/MSFT_texture_dds
-	 *
-	 */
-	function GLTFTextureDDSExtension( ddsLoader ) {
-
-		if ( ! ddsLoader ) {
-
-			throw new Error( 'THREE.GLTFLoader: Attempting to load .dds texture without importing DDSLoader' );
-
-		}
-
-		this.name = EXTENSIONS.MSFT_TEXTURE_DDS;
-		this.ddsLoader = ddsLoader;
-
-	}
-
-	/**
-	 * Punctual Lights Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_lights_punctual
-	 */
-	function GLTFLightsExtension( parser ) {
-
-		this.parser = parser;
-		this.name = EXTENSIONS.KHR_LIGHTS_PUNCTUAL;
-
-		// Object3D instance caches
-		this.cache = { refs: {}, uses: {} };
-
-	}
-
-	GLTFLightsExtension.prototype._markDefs = function () {
-
-		var parser = this.parser;
-		var nodeDefs = this.parser.json.nodes || [];
-
-		for ( var nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {
-
-			var 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 );
-
-			}
-
-		}
-
-	};
-
-	GLTFLightsExtension.prototype._loadLight = function ( lightIndex ) {
-
-		var parser = this.parser;
-		var cacheKey = 'light:' + lightIndex;
-		var dependency = parser.cache.get( cacheKey );
-
-		if ( dependency ) return dependency;
-
-		var json = parser.json;
-		var extensions = ( json.extensions && json.extensions[ this.name ] ) || {};
-		var lightDefs = extensions.lights || [];
-		var lightDef = lightDefs[ lightIndex ];
-		var lightNode;
-
-		var color = new Color( 0xffffff );
-
-		if ( lightDef.color !== undefined ) color.fromArray( lightDef.color );
-
-		var 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;
-
-		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;
-
-	};
-
-	GLTFLightsExtension.prototype.createNodeAttachment = function ( nodeIndex ) {
-
-		var self = this;
-		var parser = this.parser;
-		var json = parser.json;
-		var nodeDef = json.nodes[ nodeIndex ];
-		var lightDef = ( nodeDef.extensions && nodeDef.extensions[ this.name ] ) || {};
-		var 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
-	 */
-	function GLTFMaterialsUnlitExtension() {
-
-		this.name = EXTENSIONS.KHR_MATERIALS_UNLIT;
-
-	}
-
-	GLTFMaterialsUnlitExtension.prototype.getMaterialType = function () {
-
-		return MeshBasicMaterial;
-
-	};
-
-	GLTFMaterialsUnlitExtension.prototype.extendParams = function ( materialParams, materialDef, parser ) {
-
-		var pending = [];
-
-		materialParams.color = new Color( 1.0, 1.0, 1.0 );
-		materialParams.opacity = 1.0;
-
-		var metallicRoughness = materialDef.pbrMetallicRoughness;
-
-		if ( metallicRoughness ) {
-
-			if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
-
-				var array = metallicRoughness.baseColorFactor;
-
-				materialParams.color.fromArray( array );
-				materialParams.opacity = array[ 3 ];
-
-			}
-
-			if ( metallicRoughness.baseColorTexture !== undefined ) {
-
-				pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture ) );
-
-			}
-
-		}
-
-		return Promise.all( pending );
-
-	};
-
-	/**
-	 * Clearcoat Materials Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_clearcoat
-	 */
-	function GLTFMaterialsClearcoatExtension( parser ) {
-
-		this.parser = parser;
-		this.name = EXTENSIONS.KHR_MATERIALS_CLEARCOAT;
-
-	}
-
-	GLTFMaterialsClearcoatExtension.prototype.getMaterialType = function ( materialIndex ) {
-
-		var parser = this.parser;
-		var materialDef = parser.json.materials[ materialIndex ];
-
-		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
-
-		return MeshPhysicalMaterial;
-
-	};
-
-	GLTFMaterialsClearcoatExtension.prototype.extendMaterialParams = function ( materialIndex, materialParams ) {
-
-		var parser = this.parser;
-		var materialDef = parser.json.materials[ materialIndex ];
-
-		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
-
-			return Promise.resolve();
-
-		}
-
-		var pending = [];
-
-		var 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 ) {
-
-				var scale = extension.clearcoatNormalTexture.scale;
-
-				materialParams.clearcoatNormalScale = new Vector2( scale, scale );
-
-			}
-
-		}
-
-		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
-	 */
-	function GLTFMaterialsTransmissionExtension( parser ) {
-
-		this.parser = parser;
-		this.name = EXTENSIONS.KHR_MATERIALS_TRANSMISSION;
-
-	}
-
-	GLTFMaterialsTransmissionExtension.prototype.getMaterialType = function ( materialIndex ) {
-
-		var parser = this.parser;
-		var materialDef = parser.json.materials[ materialIndex ];
-
-		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) return null;
-
-		return MeshPhysicalMaterial;
-
-	};
-
-	GLTFMaterialsTransmissionExtension.prototype.extendMaterialParams = function ( materialIndex, materialParams ) {
-
-		var parser = this.parser;
-		var materialDef = parser.json.materials[ materialIndex ];
-
-		if ( ! materialDef.extensions || ! materialDef.extensions[ this.name ] ) {
-
-			return Promise.resolve();
-
-		}
-
-		var pending = [];
-
-		var 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 );
-
-	};
-
-	/**
-	 * BasisU Texture Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_basisu
-	 * (draft PR https://github.com/KhronosGroup/glTF/pull/1751)
-	 */
-	function GLTFTextureBasisUExtension( parser ) {
-
-		this.parser = parser;
-		this.name = EXTENSIONS.KHR_TEXTURE_BASISU;
-
-	}
-
-	GLTFTextureBasisUExtension.prototype.loadTexture = function ( textureIndex ) {
-
-		var parser = this.parser;
-		var json = parser.json;
-
-		var textureDef = json.textures[ textureIndex ];
-
-		if ( ! textureDef.extensions || ! textureDef.extensions[ this.name ] ) {
-
-			return null;
-
-		}
-
-		var extension = textureDef.extensions[ this.name ];
-		var source = json.images[ extension.source ];
-		var loader = parser.options.ktx2Loader;
-
-		if ( ! loader ) {
-
-			throw new Error( 'THREE.GLTFLoader: setKTX2Loader must be called before loading KTX2 textures' );
-
-		}
-
-		return parser.loadTextureImage( textureIndex, source, loader );
-
-	};
-
-	/* BINARY EXTENSION */
-	var BINARY_EXTENSION_HEADER_MAGIC = 'glTF';
-	var BINARY_EXTENSION_HEADER_LENGTH = 12;
-	var BINARY_EXTENSION_CHUNK_TYPES = { JSON: 0x4E4F534A, BIN: 0x004E4942 };
-
-	function GLTFBinaryExtension( data ) {
-
-		this.name = EXTENSIONS.KHR_BINARY_GLTF;
-		this.content = null;
-		this.body = null;
-
-		var headerView = new DataView( data, 0, BINARY_EXTENSION_HEADER_LENGTH );
-
-		this.header = {
-			magic: LoaderUtils.decodeText( 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.' );
-
-		}
-
-		var chunkView = new DataView( data, BINARY_EXTENSION_HEADER_LENGTH );
-		var chunkIndex = 0;
-
-		while ( chunkIndex < chunkView.byteLength ) {
-
-			var chunkLength = chunkView.getUint32( chunkIndex, true );
-			chunkIndex += 4;
-
-			var chunkType = chunkView.getUint32( chunkIndex, true );
-			chunkIndex += 4;
-
-			if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.JSON ) {
-
-				var contentArray = new Uint8Array( data, BINARY_EXTENSION_HEADER_LENGTH + chunkIndex, chunkLength );
-				this.content = LoaderUtils.decodeText( contentArray );
-
-			} else if ( chunkType === BINARY_EXTENSION_CHUNK_TYPES.BIN ) {
-
-				var 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
-	 */
-	function GLTFDracoMeshCompressionExtension( 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();
-
-	}
-
-	GLTFDracoMeshCompressionExtension.prototype.decodePrimitive = function ( primitive, parser ) {
-
-		var json = this.json;
-		var dracoLoader = this.dracoLoader;
-		var bufferViewIndex = primitive.extensions[ this.name ].bufferView;
-		var gltfAttributeMap = primitive.extensions[ this.name ].attributes;
-		var threeAttributeMap = {};
-		var attributeNormalizedMap = {};
-		var attributeTypeMap = {};
-
-		for ( var attributeName in gltfAttributeMap ) {
-
-			var threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
-
-			threeAttributeMap[ threeAttributeName ] = gltfAttributeMap[ attributeName ];
-
-		}
-
-		for ( attributeName in primitive.attributes ) {
-
-			var threeAttributeName = ATTRIBUTES[ attributeName ] || attributeName.toLowerCase();
-
-			if ( gltfAttributeMap[ attributeName ] !== undefined ) {
-
-				var accessorDef = json.accessors[ primitive.attributes[ attributeName ] ];
-				var componentType = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
-
-				attributeTypeMap[ threeAttributeName ] = componentType;
-				attributeNormalizedMap[ threeAttributeName ] = accessorDef.normalized === true;
-
-			}
-
-		}
-
-		return parser.getDependency( 'bufferView', bufferViewIndex ).then( function ( bufferView ) {
-
-			return new Promise( function ( resolve ) {
-
-				dracoLoader.decodeDracoFile( bufferView, function ( geometry ) {
-
-					for ( var attributeName in geometry.attributes ) {
-
-						var attribute = geometry.attributes[ attributeName ];
-						var normalized = attributeNormalizedMap[ attributeName ];
-
-						if ( normalized !== undefined ) attribute.normalized = normalized;
-
-					}
-
-					resolve( geometry );
-
-				}, threeAttributeMap, attributeTypeMap );
-
-			} );
-
-		} );
-
-	};
-
-	/**
-	 * Texture Transform Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_texture_transform
-	 */
-	function GLTFTextureTransformExtension() {
-
-		this.name = EXTENSIONS.KHR_TEXTURE_TRANSFORM;
-
-	}
-
-	GLTFTextureTransformExtension.prototype.extendTexture = function ( texture, transform ) {
-
-		texture = texture.clone();
-
-		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 );
-
-		}
-
-		if ( transform.texCoord !== undefined ) {
-
-			console.warn( 'THREE.GLTFLoader: Custom UV sets in "' + this.name + '" extension not yet supported.' );
-
-		}
-
-		texture.needsUpdate = true;
-
-		return texture;
-
-	};
-
-	/**
-	 * Specular-Glossiness Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_materials_pbrSpecularGlossiness
-	 */
-
-	/**
-	 * A sub class of StandardMaterial with some of the functionality
-	 * changed via the `onBeforeCompile` callback
-	 * @pailhead
-	 */
-
-	function GLTFMeshStandardSGMaterial( params ) {
-
-		MeshStandardMaterial.call( this );
-
-		this.isGLTFSpecularGlossinessMaterial = true;
-
-		//various chunks that need replacing
-		var specularMapParsFragmentChunk = [
-			'#ifdef USE_SPECULARMAP',
-			'	uniform sampler2D specularMap;',
-			'#endif'
-		].join( '\n' );
-
-		var glossinessMapParsFragmentChunk = [
-			'#ifdef USE_GLOSSINESSMAP',
-			'	uniform sampler2D glossinessMap;',
-			'#endif'
-		].join( '\n' );
-
-		var specularMapFragmentChunk = [
-			'vec3 specularFactor = specular;',
-			'#ifdef USE_SPECULARMAP',
-			'	vec4 texelSpecular = texture2D( specularMap, vUv );',
-			'	texelSpecular = sRGBToLinear( texelSpecular );',
-			'	// reads channel RGB, compatible with a glTF Specular-Glossiness (RGBA) texture',
-			'	specularFactor *= texelSpecular.rgb;',
-			'#endif'
-		].join( '\n' );
-
-		var glossinessMapFragmentChunk = [
-			'float glossinessFactor = glossiness;',
-			'#ifdef USE_GLOSSINESSMAP',
-			'	vec4 texelGlossiness = texture2D( glossinessMap, vUv );',
-			'	// reads channel A, compatible with a glTF Specular-Glossiness (RGBA) texture',
-			'	glossinessFactor *= texelGlossiness.a;',
-			'#endif'
-		].join( '\n' );
-
-		var lightPhysicalFragmentChunk = [
-			'PhysicalMaterial material;',
-			'material.diffuseColor = diffuseColor.rgb * ( 1. - max( specularFactor.r, max( specularFactor.g, specularFactor.b ) ) );',
-			'vec3 dxy = max( abs( dFdx( geometryNormal ) ), abs( dFdy( geometryNormal ) ) );',
-			'float geometryRoughness = max( max( dxy.x, dxy.y ), dxy.z );',
-			'material.specularRoughness = max( 1.0 - glossinessFactor, 0.0525 ); // 0.0525 corresponds to the base mip of a 256 cubemap.',
-			'material.specularRoughness += geometryRoughness;',
-			'material.specularRoughness = min( material.specularRoughness, 1.0 );',
-			'material.specularColor = specularFactor;',
-		].join( '\n' );
-
-		var uniforms = {
-			specular: { value: new Color().setHex( 0xffffff ) },
-			glossiness: { value: 1 },
-			specularMap: { value: null },
-			glossinessMap: { value: null }
-		};
-
-		this._extraUniforms = uniforms;
-
-		this.onBeforeCompile = function ( shader ) {
-
-			for ( var uniformName in uniforms ) {
-
-				shader.uniforms[ uniformName ] = uniforms[ uniformName ];
-
-			}
-
-			shader.fragmentShader = shader.fragmentShader
-				.replace( 'uniform float roughness;', 'uniform vec3 specular;' )
-				.replace( 'uniform float metalness;', 'uniform float glossiness;' )
-				.replace( '#include <roughnessmap_pars_fragment>', specularMapParsFragmentChunk )
-				.replace( '#include <metalnessmap_pars_fragment>', glossinessMapParsFragmentChunk )
-				.replace( '#include <roughnessmap_fragment>', specularMapFragmentChunk )
-				.replace( '#include <metalnessmap_fragment>', glossinessMapFragmentChunk )
-				.replace( '#include <lights_physical_fragment>', lightPhysicalFragmentChunk );
-
-		};
-
-		Object.defineProperties( this, {
-
-			specular: {
-				get: function () {
-
-					return uniforms.specular.value;
-
-				},
-				set: function ( v ) {
-
-					uniforms.specular.value = v;
-
-				}
-			},
-
-			specularMap: {
-				get: function () {
-
-					return uniforms.specularMap.value;
-
-				},
-				set: function ( v ) {
-
-					uniforms.specularMap.value = v;
-
-					if ( v ) {
-
-						this.defines.USE_SPECULARMAP = ''; // USE_UV is set by the renderer for specular maps
-
-					} else {
-
-						delete this.defines.USE_SPECULARMAP;
-
-					}
-
-				}
-			},
-
-			glossiness: {
-				get: function () {
-
-					return uniforms.glossiness.value;
-
-				},
-				set: function ( v ) {
-
-					uniforms.glossiness.value = v;
-
-				}
-			},
-
-			glossinessMap: {
-				get: function () {
-
-					return uniforms.glossinessMap.value;
-
-				},
-				set: function ( v ) {
-
-					uniforms.glossinessMap.value = v;
-
-					if ( v ) {
-
-						this.defines.USE_GLOSSINESSMAP = '';
-						this.defines.USE_UV = '';
-
-					} else {
-
-						delete this.defines.USE_GLOSSINESSMAP;
-						delete this.defines.USE_UV;
-
-					}
-
-				}
-			}
-
-		} );
-
-		delete this.metalness;
-		delete this.roughness;
-		delete this.metalnessMap;
-		delete this.roughnessMap;
-
-		this.setValues( params );
-
-	}
-
-	GLTFMeshStandardSGMaterial.prototype = Object.create( MeshStandardMaterial.prototype );
-	GLTFMeshStandardSGMaterial.prototype.constructor = GLTFMeshStandardSGMaterial;
-
-	GLTFMeshStandardSGMaterial.prototype.copy = function ( source ) {
-
-		MeshStandardMaterial.prototype.copy.call( this, source );
-		this.specularMap = source.specularMap;
-		this.specular.copy( source.specular );
-		this.glossinessMap = source.glossinessMap;
-		this.glossiness = source.glossiness;
-		delete this.metalness;
-		delete this.roughness;
-		delete this.metalnessMap;
-		delete this.roughnessMap;
-		return this;
-
-	};
-
-	function GLTFMaterialsPbrSpecularGlossinessExtension() {
-
-		return {
-
-			name: EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS,
-
-			specularGlossinessParams: [
-				'color',
-				'map',
-				'lightMap',
-				'lightMapIntensity',
-				'aoMap',
-				'aoMapIntensity',
-				'emissive',
-				'emissiveIntensity',
-				'emissiveMap',
-				'bumpMap',
-				'bumpScale',
-				'normalMap',
-				'normalMapType',
-				'displacementMap',
-				'displacementScale',
-				'displacementBias',
-				'specularMap',
-				'specular',
-				'glossinessMap',
-				'glossiness',
-				'alphaMap',
-				'envMap',
-				'envMapIntensity',
-				'refractionRatio',
-			],
-
-			getMaterialType: function () {
-
-				return GLTFMeshStandardSGMaterial;
-
-			},
-
-			extendParams: function ( materialParams, materialDef, parser ) {
-
-				var pbrSpecularGlossiness = materialDef.extensions[ this.name ];
-
-				materialParams.color = new Color( 1.0, 1.0, 1.0 );
-				materialParams.opacity = 1.0;
-
-				var pending = [];
-
-				if ( Array.isArray( pbrSpecularGlossiness.diffuseFactor ) ) {
-
-					var array = pbrSpecularGlossiness.diffuseFactor;
-
-					materialParams.color.fromArray( array );
-					materialParams.opacity = array[ 3 ];
-
-				}
-
-				if ( pbrSpecularGlossiness.diffuseTexture !== undefined ) {
-
-					pending.push( parser.assignTexture( materialParams, 'map', pbrSpecularGlossiness.diffuseTexture ) );
-
-				}
-
-				materialParams.emissive = new Color( 0.0, 0.0, 0.0 );
-				materialParams.glossiness = pbrSpecularGlossiness.glossinessFactor !== undefined ? pbrSpecularGlossiness.glossinessFactor : 1.0;
-				materialParams.specular = new Color( 1.0, 1.0, 1.0 );
-
-				if ( Array.isArray( pbrSpecularGlossiness.specularFactor ) ) {
-
-					materialParams.specular.fromArray( pbrSpecularGlossiness.specularFactor );
-
-				}
-
-				if ( pbrSpecularGlossiness.specularGlossinessTexture !== undefined ) {
-
-					var specGlossMapDef = pbrSpecularGlossiness.specularGlossinessTexture;
-					pending.push( parser.assignTexture( materialParams, 'glossinessMap', specGlossMapDef ) );
-					pending.push( parser.assignTexture( materialParams, 'specularMap', specGlossMapDef ) );
-
-				}
-
-				return Promise.all( pending );
-
-			},
-
-			createMaterial: function ( materialParams ) {
-
-				var material = new GLTFMeshStandardSGMaterial( materialParams );
-				material.fog = true;
-
-				material.color = materialParams.color;
-
-				material.map = materialParams.map === undefined ? null : materialParams.map;
-
-				material.lightMap = null;
-				material.lightMapIntensity = 1.0;
-
-				material.aoMap = materialParams.aoMap === undefined ? null : materialParams.aoMap;
-				material.aoMapIntensity = 1.0;
-
-				material.emissive = materialParams.emissive;
-				material.emissiveIntensity = 1.0;
-				material.emissiveMap = materialParams.emissiveMap === undefined ? null : materialParams.emissiveMap;
-
-				material.bumpMap = materialParams.bumpMap === undefined ? null : materialParams.bumpMap;
-				material.bumpScale = 1;
-
-				material.normalMap = materialParams.normalMap === undefined ? null : materialParams.normalMap;
-				material.normalMapType = TangentSpaceNormalMap;
-
-				if ( materialParams.normalScale ) material.normalScale = materialParams.normalScale;
-
-				material.displacementMap = null;
-				material.displacementScale = 1;
-				material.displacementBias = 0;
-
-				material.specularMap = materialParams.specularMap === undefined ? null : materialParams.specularMap;
-				material.specular = materialParams.specular;
-
-				material.glossinessMap = materialParams.glossinessMap === undefined ? null : materialParams.glossinessMap;
-				material.glossiness = materialParams.glossiness;
-
-				material.alphaMap = null;
-
-				material.envMap = materialParams.envMap === undefined ? null : materialParams.envMap;
-				material.envMapIntensity = 1.0;
-
-				material.refractionRatio = 0.98;
-
-				return material;
-
-			},
-
-		};
-
-	}
-
-	/**
-	 * Mesh Quantization Extension
-	 *
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/extensions/2.0/Khronos/KHR_mesh_quantization
-	 */
-	function GLTFMeshQuantizationExtension() {
-
-		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
-	function GLTFCubicSplineInterpolant( parameterPositions, sampleValues, sampleSize, resultBuffer ) {
-
-		Interpolant.call( this, parameterPositions, sampleValues, sampleSize, resultBuffer );
-
-	}
-
-	GLTFCubicSplineInterpolant.prototype = Object.create( Interpolant.prototype );
-	GLTFCubicSplineInterpolant.prototype.constructor = GLTFCubicSplineInterpolant;
-
-	GLTFCubicSplineInterpolant.prototype.copySampleValue_ = function ( index ) {
-
-		// Copies a sample value to the result buffer. See description of glTF
-		// CUBICSPLINE values layout in interpolate_() function below.
-
-		var result = this.resultBuffer,
-			values = this.sampleValues,
-			valueSize = this.valueSize,
-			offset = index * valueSize * 3 + valueSize;
-
-		for ( var i = 0; i !== valueSize; i ++ ) {
-
-			result[ i ] = values[ offset + i ];
-
-		}
-
-		return result;
-
-	};
-
-	GLTFCubicSplineInterpolant.prototype.beforeStart_ = GLTFCubicSplineInterpolant.prototype.copySampleValue_;
-
-	GLTFCubicSplineInterpolant.prototype.afterEnd_ = GLTFCubicSplineInterpolant.prototype.copySampleValue_;
-
-	GLTFCubicSplineInterpolant.prototype.interpolate_ = function ( i1, t0, t, t1 ) {
-
-		var result = this.resultBuffer;
-		var values = this.sampleValues;
-		var stride = this.valueSize;
-
-		var stride2 = stride * 2;
-		var stride3 = stride * 3;
-
-		var td = t1 - t0;
-
-		var p = ( t - t0 ) / td;
-		var pp = p * p;
-		var ppp = pp * p;
-
-		var offset1 = i1 * stride3;
-		var offset0 = offset1 - stride3;
-
-		var s2 = - 2 * ppp + 3 * pp;
-		var s3 = ppp - pp;
-		var s0 = 1 - s2;
-		var s1 = s3 - pp + p;
-
-		// Layout of keyframe output values for CUBICSPLINE animations:
-		//   [ inTangent_1, splineVertex_1, outTangent_1, inTangent_2, splineVertex_2, ... ]
-		for ( var i = 0; i !== stride; i ++ ) {
-
-			var p0 = values[ offset0 + i + stride ]; // splineVertex_k
-			var m0 = values[ offset0 + i + stride2 ] * td; // outTangent_k * (t_k+1 - t_k)
-			var p1 = values[ offset1 + i + stride ]; // splineVertex_k+1
-			var 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;
-
-	};
-
-	/*********************************/
-	/********** INTERNALS ************/
-	/*********************************/
-
-	/* CONSTANTS */
-
-	var 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
-	};
-
-	var WEBGL_COMPONENT_TYPES = {
-		5120: Int8Array,
-		5121: Uint8Array,
-		5122: Int16Array,
-		5123: Uint16Array,
-		5125: Uint32Array,
-		5126: Float32Array
-	};
-
-	var WEBGL_FILTERS = {
-		9728: NearestFilter,
-		9729: LinearFilter,
-		9984: NearestMipmapNearestFilter,
-		9985: LinearMipmapNearestFilter,
-		9986: NearestMipmapLinearFilter,
-		9987: LinearMipmapLinearFilter
-	};
-
-	var WEBGL_WRAPPINGS = {
-		33071: ClampToEdgeWrapping,
-		33648: MirroredRepeatWrapping,
-		10497: RepeatWrapping
-	};
-
-	var WEBGL_TYPE_SIZES = {
-		'SCALAR': 1,
-		'VEC2': 2,
-		'VEC3': 3,
-		'VEC4': 4,
-		'MAT2': 4,
-		'MAT3': 9,
-		'MAT4': 16
-	};
-
-	var ATTRIBUTES = {
-		POSITION: 'position',
-		NORMAL: 'normal',
-		TANGENT: 'tangent',
-		TEXCOORD_0: 'uv',
-		TEXCOORD_1: 'uv2',
-		COLOR_0: 'color',
-		WEIGHTS_0: 'skinWeight',
-		JOINTS_0: 'skinIndex',
-	};
-
-	var PATH_PROPERTIES = {
-		scale: 'scale',
-		translation: 'position',
-		rotation: 'quaternion',
-		weights: 'morphTargetInfluences'
-	};
-
-	var 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
-	};
-
-	var ALPHA_MODES = {
-		OPAQUE: 'OPAQUE',
-		MASK: 'MASK',
-		BLEND: 'BLEND'
-	};
-
-	/* UTILITY FUNCTIONS */
-
-	function 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;
-
-	}
-
-	/**
-	 * 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 ( var 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 ) {
-
-		var hasMorphPosition = false;
-		var hasMorphNormal = false;
-
-		for ( var i = 0, il = targets.length; i < il; i ++ ) {
-
-			var target = targets[ i ];
-
-			if ( target.POSITION !== undefined ) hasMorphPosition = true;
-			if ( target.NORMAL !== undefined ) hasMorphNormal = true;
-
-			if ( hasMorphPosition && hasMorphNormal ) break;
-
-		}
-
-		if ( ! hasMorphPosition && ! hasMorphNormal ) return Promise.resolve( geometry );
-
-		var pendingPositionAccessors = [];
-		var pendingNormalAccessors = [];
-
-		for ( var i = 0, il = targets.length; i < il; i ++ ) {
-
-			var target = targets[ i ];
-
-			if ( hasMorphPosition ) {
-
-				var pendingAccessor = target.POSITION !== undefined
-					? parser.getDependency( 'accessor', target.POSITION )
-					: geometry.attributes.position;
-
-				pendingPositionAccessors.push( pendingAccessor );
-
-			}
-
-			if ( hasMorphNormal ) {
-
-				var pendingAccessor = target.NORMAL !== undefined
-					? parser.getDependency( 'accessor', target.NORMAL )
-					: geometry.attributes.normal;
-
-				pendingNormalAccessors.push( pendingAccessor );
-
-			}
-
-		}
-
-		return Promise.all( [
-			Promise.all( pendingPositionAccessors ),
-			Promise.all( pendingNormalAccessors )
-		] ).then( function ( accessors ) {
-
-			var morphPositions = accessors[ 0 ];
-			var morphNormals = accessors[ 1 ];
-
-			if ( hasMorphPosition ) geometry.morphAttributes.position = morphPositions;
-			if ( hasMorphNormal ) geometry.morphAttributes.normal = morphNormals;
-			geometry.morphTargetsRelative = true;
-
-			return geometry;
-
-		} );
-
-	}
-
-	/**
-	 * @param {Mesh} mesh
-	 * @param {GLTF.Mesh} meshDef
-	 */
-	function updateMorphTargets( mesh, meshDef ) {
-
-		mesh.updateMorphTargets();
-
-		if ( meshDef.weights !== undefined ) {
-
-			for ( var 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 ) ) {
-
-			var targetNames = meshDef.extras.targetNames;
-
-			if ( mesh.morphTargetInfluences.length === targetNames.length ) {
-
-				mesh.morphTargetDictionary = {};
-
-				for ( var 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 ) {
-
-		var dracoExtension = primitiveDef.extensions && primitiveDef.extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ];
-		var geometryKey;
-
-		if ( dracoExtension ) {
-
-			geometryKey = 'draco:' + dracoExtension.bufferView
-				+ ':' + dracoExtension.indices
-				+ ':' + createAttributesKey( dracoExtension.attributes );
-
-		} else {
-
-			geometryKey = primitiveDef.indices + ':' + createAttributesKey( primitiveDef.attributes ) + ':' + primitiveDef.mode;
-
-		}
-
-		return geometryKey;
-
-	}
-
-	function createAttributesKey( attributes ) {
-
-		var attributesKey = '';
-
-		var keys = Object.keys( attributes ).sort();
-
-		for ( var i = 0, il = keys.length; i < il; i ++ ) {
-
-			attributesKey += keys[ i ] + ':' + attributes[ keys[ i ] ] + ';';
-
-		}
-
-		return attributesKey;
-
-	}
-
-	/* GLTF PARSER */
-
-	function GLTFParser( 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 = {};
-
-		// Object3D instance caches
-		this.meshCache = { refs: {}, uses: {} };
-		this.cameraCache = { refs: {}, uses: {} };
-		this.lightCache = { refs: {}, uses: {} };
-
-		// 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.
-		if ( typeof createImageBitmap !== 'undefined' && /Firefox/.test( navigator.userAgent ) === false ) {
-
-			this.textureLoader = new ImageBitmapLoader( this.options.manager );
-
-		} else {
-
-			this.textureLoader = new TextureLoader( this.options.manager );
-
-		}
-
-		this.textureLoader.setCrossOrigin( this.options.crossOrigin );
-
-		this.fileLoader = new FileLoader( this.options.manager );
-		this.fileLoader.setResponseType( 'arraybuffer' );
-
-		if ( this.options.crossOrigin === 'use-credentials' ) {
-
-			this.fileLoader.setWithCredentials( true );
-
-		}
-
-	}
-
-	GLTFParser.prototype.setExtensions = function ( extensions ) {
-
-		this.extensions = extensions;
-
-	};
-
-	GLTFParser.prototype.setPlugins = function ( plugins ) {
-
-		this.plugins = plugins;
-
-	};
-
-	GLTFParser.prototype.parse = function ( onLoad, onError ) {
-
-		var parser = this;
-		var json = this.json;
-		var extensions = this.extensions;
-
-		// Clear the loader cache
-		this.cache.removeAll();
-
-		// Mark the special nodes/meshes in json for efficient parse
-		this._invokeAll( function ( ext ) {
-
-			return ext._markDefs && ext._markDefs();
-
-		} );
-
-		Promise.all( [
-
-			this.getDependencies( 'scene' ),
-			this.getDependencies( 'animation' ),
-			this.getDependencies( 'camera' ),
-
-		] ).then( function ( dependencies ) {
-
-			var 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 );
-
-			onLoad( result );
-
-		} ).catch( onError );
-
-	};
-
-	/**
-	 * Marks the special nodes/meshes in json for efficient parse.
-	 */
-	GLTFParser.prototype._markDefs = function () {
-
-		var nodeDefs = this.json.nodes || [];
-		var skinDefs = this.json.skins || [];
-		var 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 ( var skinIndex = 0, skinLength = skinDefs.length; skinIndex < skinLength; skinIndex ++ ) {
-
-			var joints = skinDefs[ skinIndex ].joints;
-
-			for ( var 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 ( var nodeIndex = 0, nodeLength = nodeDefs.length; nodeIndex < nodeLength; nodeIndex ++ ) {
-
-			var 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.
-	 */
-	GLTFParser.prototype._addNodeRef = function ( 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. */
-	GLTFParser.prototype._getNodeRef = function ( cache, index, object ) {
-
-		if ( cache.refs[ index ] <= 1 ) return object;
-
-		var ref = object.clone();
-
-		ref.name += '_instance_' + ( cache.uses[ index ] ++ );
-
-		return ref;
-
-	};
-
-	GLTFParser.prototype._invokeOne = function ( func ) {
-
-		var extensions = Object.values( this.plugins );
-		extensions.push( this );
-
-		for ( var i = 0; i < extensions.length; i ++ ) {
-
-			var result = func( extensions[ i ] );
-
-			if ( result ) return result;
-
-		}
-
-	};
-
-	GLTFParser.prototype._invokeAll = function ( func ) {
-
-		var extensions = Object.values( this.plugins );
-		extensions.unshift( this );
-
-		var pending = [];
-
-		for ( var i = 0; i < extensions.length; i ++ ) {
-
-			var 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>}
-	 */
-	GLTFParser.prototype.getDependency = function ( type, index ) {
-
-		var cacheKey = type + ':' + index;
-		var dependency = this.cache.get( cacheKey );
-
-		if ( ! dependency ) {
-
-			switch ( type ) {
-
-				case 'scene':
-					dependency = this.loadScene( index );
-					break;
-
-				case 'node':
-					dependency = this.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.loadAnimation( index );
-					break;
-
-				case 'camera':
-					dependency = this.loadCamera( index );
-					break;
-
-				default:
-					throw new Error( 'Unknown type: ' + type );
-
-			}
-
-			this.cache.add( cacheKey, dependency );
-
-		}
-
-		return dependency;
-
-	};
-
-	/**
-	 * Requests all dependencies of the specified type asynchronously, with caching.
-	 * @param {string} type
-	 * @return {Promise<Array<Object>>}
-	 */
-	GLTFParser.prototype.getDependencies = function ( type ) {
-
-		var dependencies = this.cache.get( type );
-
-		if ( ! dependencies ) {
-
-			var parser = this;
-			var 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>}
-	 */
-	GLTFParser.prototype.loadBuffer = function ( bufferIndex ) {
-
-		var bufferDef = this.json.buffers[ bufferIndex ];
-		var 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 );
-
-		}
-
-		var options = this.options;
-
-		return new Promise( function ( resolve, reject ) {
-
-			loader.load( 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>}
-	 */
-	GLTFParser.prototype.loadBufferView = function ( bufferViewIndex ) {
-
-		var bufferViewDef = this.json.bufferViews[ bufferViewIndex ];
-
-		return this.getDependency( 'buffer', bufferViewDef.buffer ).then( function ( buffer ) {
-
-			var byteLength = bufferViewDef.byteLength || 0;
-			var 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>}
-	 */
-	GLTFParser.prototype.loadAccessor = function ( accessorIndex ) {
-
-		var parser = this;
-		var json = this.json;
-
-		var accessorDef = this.json.accessors[ accessorIndex ];
-
-		if ( accessorDef.bufferView === undefined && accessorDef.sparse === undefined ) {
-
-			// Ignore empty accessors, which may be used to declare runtime
-			// information about attributes coming from another source (e.g. Draco
-			// compression extension).
-			return Promise.resolve( null );
-
-		}
-
-		var 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 ) {
-
-			var bufferView = bufferViews[ 0 ];
-
-			var itemSize = WEBGL_TYPE_SIZES[ accessorDef.type ];
-			var TypedArray = WEBGL_COMPONENT_TYPES[ accessorDef.componentType ];
-
-			// For VEC3: itemSize is 3, elementBytes is 4, itemBytes is 12.
-			var elementBytes = TypedArray.BYTES_PER_ELEMENT;
-			var itemBytes = elementBytes * itemSize;
-			var byteOffset = accessorDef.byteOffset || 0;
-			var byteStride = accessorDef.bufferView !== undefined ? json.bufferViews[ accessorDef.bufferView ].byteStride : undefined;
-			var normalized = accessorDef.normalized === true;
-			var 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
-				var ibSlice = Math.floor( byteOffset / byteStride );
-				var ibCacheKey = 'InterleavedBuffer:' + accessorDef.bufferView + ':' + accessorDef.componentType + ':' + ibSlice + ':' + accessorDef.count;
-				var 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 ) {
-
-				var itemSizeIndices = WEBGL_TYPE_SIZES.SCALAR;
-				var TypedArrayIndices = WEBGL_COMPONENT_TYPES[ accessorDef.sparse.indices.componentType ];
-
-				var byteOffsetIndices = accessorDef.sparse.indices.byteOffset || 0;
-				var byteOffsetValues = accessorDef.sparse.values.byteOffset || 0;
-
-				var sparseIndices = new TypedArrayIndices( bufferViews[ 1 ], byteOffsetIndices, accessorDef.sparse.count * itemSizeIndices );
-				var 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 ( var i = 0, il = sparseIndices.length; i < il; i ++ ) {
-
-					var 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>}
-	 */
-	GLTFParser.prototype.loadTexture = function ( textureIndex ) {
-
-		var parser = this;
-		var json = this.json;
-		var options = this.options;
-
-		var textureDef = json.textures[ textureIndex ];
-
-		var textureExtensions = textureDef.extensions || {};
-
-		var source;
-
-		if ( textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ] ) {
-
-			source = json.images[ textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ].source ];
-
-		} else {
-
-			source = json.images[ textureDef.source ];
-
-		}
-
-		var loader;
-
-		if ( source.uri ) {
-
-			loader = options.manager.getHandler( source.uri );
-
-		}
-
-		if ( ! loader ) {
-
-			loader = textureExtensions[ EXTENSIONS.MSFT_TEXTURE_DDS ]
-				? parser.extensions[ EXTENSIONS.MSFT_TEXTURE_DDS ].ddsLoader
-				: this.textureLoader;
-
-		}
-
-		return this.loadTextureImage( textureIndex, source, loader );
-
-	};
-
-	GLTFParser.prototype.loadTextureImage = function ( textureIndex, source, loader ) {
-
-		var parser = this;
-		var json = this.json;
-		var options = this.options;
-
-		var textureDef = json.textures[ textureIndex ];
-
-		var URL = self.URL || self.webkitURL;
-
-		var sourceURI = source.uri;
-		var isObjectURL = false;
-		var hasAlpha = true;
-
-		if ( source.mimeType === 'image/jpeg' ) hasAlpha = false;
-
-		if ( source.bufferView !== undefined ) {
-
-			// Load binary image data from bufferView, if provided.
-
-			sourceURI = parser.getDependency( 'bufferView', source.bufferView ).then( function ( bufferView ) {
-
-				if ( source.mimeType === 'image/png' ) {
-
-					// Inspect the PNG 'IHDR' chunk to determine whether the image could have an
-					// alpha channel. This check is conservative — the image could have an alpha
-					// channel with all values == 1, and the indexed type (colorType == 3) only
-					// sometimes contains alpha.
-					//
-					// https://en.wikipedia.org/wiki/Portable_Network_Graphics#File_header
-					var colorType = new DataView( bufferView, 25, 1 ).getUint8( 0, false );
-					hasAlpha = colorType === 6 || colorType === 4 || colorType === 3;
-
-				}
-
-				isObjectURL = true;
-				var blob = new Blob( [ bufferView ], { type: source.mimeType } );
-				sourceURI = URL.createObjectURL( blob );
-				return sourceURI;
-
-			} );
-
-		}
-
-		return Promise.resolve( sourceURI ).then( function ( sourceURI ) {
-
-			return new Promise( function ( resolve, reject ) {
-
-				var onLoad = resolve;
-
-				if ( loader.isImageBitmapLoader === true ) {
-
-					onLoad = function ( imageBitmap ) {
-
-						resolve( new CanvasTexture( imageBitmap ) );
-
-					};
-
-				}
-
-				loader.load( resolveURL( sourceURI, options.path ), onLoad, undefined, reject );
-
-			} );
-
-		} ).then( function ( texture ) {
-
-			// Clean up resources and configure Texture.
-
-			if ( isObjectURL === true ) {
-
-				URL.revokeObjectURL( sourceURI );
-
-			}
-
-			texture.flipY = false;
-
-			if ( textureDef.name ) texture.name = textureDef.name;
-
-			// When there is definitely no alpha channel in the texture, set RGBFormat to save space.
-			if ( ! hasAlpha ) texture.format = RGBFormat;
-
-			var samplers = json.samplers || {};
-			var 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, {
-				type: 'textures',
-				index: textureIndex
-			} );
-
-			return texture;
-
-		} );
-
-	};
-
-	/**
-	 * Asynchronously assigns a texture to the given material parameters.
-	 * @param {Object} materialParams
-	 * @param {string} mapName
-	 * @param {Object} mapDef
-	 * @return {Promise}
-	 */
-	GLTFParser.prototype.assignTexture = function ( materialParams, mapName, mapDef ) {
-
-		var parser = this;
-
-		return this.getDependency( 'texture', mapDef.index ).then( function ( texture ) {
-
-			// Materials sample aoMap from UV set 1 and other maps from UV set 0 - this can't be configured
-			// However, we will copy UV set 0 to UV set 1 on demand for aoMap
-			if ( mapDef.texCoord !== undefined && mapDef.texCoord != 0 && ! ( mapName === 'aoMap' && mapDef.texCoord == 1 ) ) {
-
-				console.warn( 'THREE.GLTFLoader: Custom UV set ' + mapDef.texCoord + ' for texture ' + mapName + ' not yet supported.' );
-
-			}
-
-			if ( parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] ) {
-
-				var transform = mapDef.extensions !== undefined ? mapDef.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ] : undefined;
-
-				if ( transform ) {
-
-					var gltfReference = parser.associations.get( texture );
-					texture = parser.extensions[ EXTENSIONS.KHR_TEXTURE_TRANSFORM ].extendTexture( texture, transform );
-					parser.associations.set( texture, gltfReference );
-
-				}
-
-			}
-
-			materialParams[ mapName ] = 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 accomodate 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.
-	 */
-	GLTFParser.prototype.assignFinalMaterial = function ( mesh ) {
-
-		var geometry = mesh.geometry;
-		var material = mesh.material;
-
-		var useVertexTangents = geometry.attributes.tangent !== undefined;
-		var useVertexColors = geometry.attributes.color !== undefined;
-		var useFlatShading = geometry.attributes.normal === undefined;
-		var useSkinning = mesh.isSkinnedMesh === true;
-		var useMorphTargets = Object.keys( geometry.morphAttributes ).length > 0;
-		var useMorphNormals = useMorphTargets && geometry.morphAttributes.normal !== undefined;
-
-		if ( mesh.isPoints ) {
-
-			var cacheKey = 'PointsMaterial:' + material.uuid;
-
-			var 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 ) {
-
-			var cacheKey = 'LineBasicMaterial:' + material.uuid;
-
-			var lineMaterial = this.cache.get( cacheKey );
-
-			if ( ! lineMaterial ) {
-
-				lineMaterial = new LineBasicMaterial();
-				Material.prototype.copy.call( lineMaterial, material );
-				lineMaterial.color.copy( material.color );
-
-				this.cache.add( cacheKey, lineMaterial );
-
-			}
-
-			material = lineMaterial;
-
-		}
-
-		// Clone the material if it will be modified
-		if ( useVertexTangents || useVertexColors || useFlatShading || useSkinning || useMorphTargets ) {
-
-			var cacheKey = 'ClonedMaterial:' + material.uuid + ':';
-
-			if ( material.isGLTFSpecularGlossinessMaterial ) cacheKey += 'specular-glossiness:';
-			if ( useSkinning ) cacheKey += 'skinning:';
-			if ( useVertexTangents ) cacheKey += 'vertex-tangents:';
-			if ( useVertexColors ) cacheKey += 'vertex-colors:';
-			if ( useFlatShading ) cacheKey += 'flat-shading:';
-			if ( useMorphTargets ) cacheKey += 'morph-targets:';
-			if ( useMorphNormals ) cacheKey += 'morph-normals:';
-
-			var cachedMaterial = this.cache.get( cacheKey );
-
-			if ( ! cachedMaterial ) {
-
-				cachedMaterial = material.clone();
-
-				if ( useSkinning ) cachedMaterial.skinning = true;
-				if ( useVertexTangents ) cachedMaterial.vertexTangents = true;
-				if ( useVertexColors ) cachedMaterial.vertexColors = true;
-				if ( useFlatShading ) cachedMaterial.flatShading = true;
-				if ( useMorphTargets ) cachedMaterial.morphTargets = true;
-				if ( useMorphNormals ) cachedMaterial.morphNormals = true;
-
-				this.cache.add( cacheKey, cachedMaterial );
-
-				this.associations.set( cachedMaterial, this.associations.get( material ) );
-
-			}
-
-			material = cachedMaterial;
-
-		}
-
-		// workarounds for mesh and geometry
-
-		if ( material.aoMap && geometry.attributes.uv2 === undefined && geometry.attributes.uv !== undefined ) {
-
-			geometry.setAttribute( 'uv2', geometry.attributes.uv );
-
-		}
-
-		// https://github.com/mrdoob/three.js/issues/11438#issuecomment-507003995
-		if ( material.normalScale && ! useVertexTangents ) {
-
-			material.normalScale.y = - material.normalScale.y;
-
-		}
-
-		if ( material.clearcoatNormalScale && ! useVertexTangents ) {
-
-			material.clearcoatNormalScale.y = - material.clearcoatNormalScale.y;
-
-		}
-
-		mesh.material = material;
-
-	};
-
-	GLTFParser.prototype.getMaterialType = function ( /* materialIndex */ ) {
-
-		return MeshStandardMaterial;
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/blob/master/specification/2.0/README.md#materials
-	 * @param {number} materialIndex
-	 * @return {Promise<Material>}
-	 */
-	GLTFParser.prototype.loadMaterial = function ( materialIndex ) {
-
-		var parser = this;
-		var json = this.json;
-		var extensions = this.extensions;
-		var materialDef = json.materials[ materialIndex ];
-
-		var materialType;
-		var materialParams = {};
-		var materialExtensions = materialDef.extensions || {};
-
-		var pending = [];
-
-		if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ] ) {
-
-			var sgExtension = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ];
-			materialType = sgExtension.getMaterialType();
-			pending.push( sgExtension.extendParams( materialParams, materialDef, parser ) );
-
-		} else if ( materialExtensions[ EXTENSIONS.KHR_MATERIALS_UNLIT ] ) {
-
-			var 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
-
-			var metallicRoughness = materialDef.pbrMetallicRoughness || {};
-
-			materialParams.color = new Color( 1.0, 1.0, 1.0 );
-			materialParams.opacity = 1.0;
-
-			if ( Array.isArray( metallicRoughness.baseColorFactor ) ) {
-
-				var array = metallicRoughness.baseColorFactor;
-
-				materialParams.color.fromArray( array );
-				materialParams.opacity = array[ 3 ];
-
-			}
-
-			if ( metallicRoughness.baseColorTexture !== undefined ) {
-
-				pending.push( parser.assignTexture( materialParams, 'map', metallicRoughness.baseColorTexture ) );
-
-			}
-
-			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;
-
-		}
-
-		var 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 ) {
-
-				materialParams.normalScale.set( materialDef.normalTexture.scale, materialDef.normalTexture.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 ) {
-
-			materialParams.emissive = new Color().fromArray( materialDef.emissiveFactor );
-
-		}
-
-		if ( materialDef.emissiveTexture !== undefined && materialType !== MeshBasicMaterial ) {
-
-			pending.push( parser.assignTexture( materialParams, 'emissiveMap', materialDef.emissiveTexture ) );
-
-		}
-
-		return Promise.all( pending ).then( function () {
-
-			var material;
-
-			if ( materialType === GLTFMeshStandardSGMaterial ) {
-
-				material = extensions[ EXTENSIONS.KHR_MATERIALS_PBR_SPECULAR_GLOSSINESS ].createMaterial( materialParams );
-
-			} else {
-
-				material = new materialType( materialParams );
-
-			}
-
-			if ( materialDef.name ) material.name = materialDef.name;
-
-			// baseColorTexture, emissiveTexture, and specularGlossinessTexture use sRGB encoding.
-			if ( material.map ) material.map.encoding = sRGBEncoding;
-			if ( material.emissiveMap ) material.emissiveMap.encoding = sRGBEncoding;
-
-			assignExtrasToUserData( material, materialDef );
-
-			parser.associations.set( material, { type: 'materials', index: materialIndex } );
-
-			if ( materialDef.extensions ) addUnknownExtensionsToUserData( extensions, material, materialDef );
-
-			return material;
-
-		} );
-
-	};
-
-	/** When Object3D instances are targeted by animation, they need unique names. */
-	GLTFParser.prototype.createUniqueName = function ( originalName ) {
-
-		var name = PropertyBinding.sanitizeNodeName( originalName || '' );
-
-		for ( var i = 1; this.nodeNamesUsed[ name ]; ++ i ) {
-
-			name = originalName + '_' + i;
-
-		}
-
-		this.nodeNamesUsed[ name ] = true;
-
-		return name;
-
-	};
-
-	/**
-	 * @param {BufferGeometry} geometry
-	 * @param {GLTF.Primitive} primitiveDef
-	 * @param {GLTFParser} parser
-	 */
-	function computeBounds( geometry, primitiveDef, parser ) {
-
-		var attributes = primitiveDef.attributes;
-
-		var box = new Box3();
-
-		if ( attributes.POSITION !== undefined ) {
-
-			var accessor = parser.json.accessors[ attributes.POSITION ];
-
-			var min = accessor.min;
-			var 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 ] ) );
-
-			} else {
-
-				console.warn( 'THREE.GLTFLoader: Missing min/max properties for accessor POSITION.' );
-
-				return;
-
-			}
-
-		} else {
-
-			return;
-
-		}
-
-		var targets = primitiveDef.targets;
-
-		if ( targets !== undefined ) {
-
-			var maxDisplacement = new Vector3();
-			var vector = new Vector3();
-
-			for ( var i = 0, il = targets.length; i < il; i ++ ) {
-
-				var target = targets[ i ];
-
-				if ( target.POSITION !== undefined ) {
-
-					var accessor = parser.json.accessors[ target.POSITION ];
-					var min = accessor.min;
-					var 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 ] ) ) );
-
-						// 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;
-
-		var 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 ) {
-
-		var attributes = primitiveDef.attributes;
-
-		var pending = [];
-
-		function assignAttributeAccessor( accessorIndex, attributeName ) {
-
-			return parser.getDependency( 'accessor', accessorIndex )
-				.then( function ( accessor ) {
-
-					geometry.setAttribute( attributeName, accessor );
-
-				} );
-
-		}
-
-		for ( var gltfAttributeName in attributes ) {
-
-			var 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 ) {
-
-			var accessor = parser.getDependency( 'accessor', primitiveDef.indices ).then( function ( accessor ) {
-
-				geometry.setIndex( accessor );
-
-			} );
-
-			pending.push( accessor );
-
-		}
-
-		assignExtrasToUserData( geometry, primitiveDef );
-
-		computeBounds( geometry, primitiveDef, parser );
-
-		return Promise.all( pending ).then( function () {
-
-			return primitiveDef.targets !== undefined
-				? addMorphTargets( geometry, primitiveDef.targets, parser )
-				: geometry;
-
-		} );
-
-	}
-
-	/**
-	 * @param {BufferGeometry} geometry
-	 * @param {Number} drawMode
-	 * @return {BufferGeometry}
-	 */
-	function toTrianglesDrawMode( geometry, drawMode ) {
-
-		var index = geometry.getIndex();
-
-		// generate index if not present
-
-		if ( index === null ) {
-
-			var indices = [];
-
-			var position = geometry.getAttribute( 'position' );
-
-			if ( position !== undefined ) {
-
-				for ( var i = 0; i < position.count; i ++ ) {
-
-					indices.push( i );
-
-				}
-
-				geometry.setIndex( indices );
-				index = geometry.getIndex();
-
-			} else {
-
-				console.error( 'THREE.GLTFLoader.toTrianglesDrawMode(): Undefined position attribute. Processing not possible.' );
-				return geometry;
-
-			}
-
-		}
-
-		//
-
-		var numberOfTriangles = index.count - 2;
-		var newIndices = [];
-
-		if ( drawMode === TriangleFanDrawMode ) {
-
-			// gl.TRIANGLE_FAN
-
-			for ( var i = 1; i <= numberOfTriangles; i ++ ) {
-
-				newIndices.push( index.getX( 0 ) );
-				newIndices.push( index.getX( i ) );
-				newIndices.push( index.getX( i + 1 ) );
-
-			}
-
-		} else {
-
-			// gl.TRIANGLE_STRIP
-
-			for ( var i = 0; i < numberOfTriangles; i ++ ) {
-
-				if ( i % 2 === 0 ) {
-
-					newIndices.push( index.getX( i ) );
-					newIndices.push( index.getX( i + 1 ) );
-					newIndices.push( index.getX( i + 2 ) );
-
-
-				} else {
-
-					newIndices.push( index.getX( i + 2 ) );
-					newIndices.push( index.getX( i + 1 ) );
-					newIndices.push( index.getX( i ) );
-
-				}
-
-			}
-
-		}
-
-		if ( ( newIndices.length / 3 ) !== numberOfTriangles ) {
-
-			console.error( 'THREE.GLTFLoader.toTrianglesDrawMode(): Unable to generate correct amount of triangles.' );
-
-		}
-
-		// build final geometry
-
-		var newGeometry = geometry.clone();
-		newGeometry.setIndex( newIndices );
-
-		return newGeometry;
-
-	}
-
-	/**
-	 * 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>>}
-	 */
-	GLTFParser.prototype.loadGeometries = function ( primitives ) {
-
-		var parser = this;
-		var extensions = this.extensions;
-		var cache = this.primitiveCache;
-
-		function createDracoPrimitive( primitive ) {
-
-			return extensions[ EXTENSIONS.KHR_DRACO_MESH_COMPRESSION ]
-				.decodePrimitive( primitive, parser )
-				.then( function ( geometry ) {
-
-					return addPrimitiveAttributes( geometry, primitive, parser );
-
-				} );
-
-		}
-
-		var pending = [];
-
-		for ( var i = 0, il = primitives.length; i < il; i ++ ) {
-
-			var primitive = primitives[ i ];
-			var cacheKey = createPrimitiveKey( primitive );
-
-			// See if we've already created this geometry
-			var cached = cache[ cacheKey ];
-
-			if ( cached ) {
-
-				// Use the cached geometry if it exists
-				pending.push( cached.promise );
-
-			} else {
-
-				var 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>}
-	 */
-	GLTFParser.prototype.loadMesh = function ( meshIndex ) {
-
-		var parser = this;
-		var json = this.json;
-
-		var meshDef = json.meshes[ meshIndex ];
-		var primitives = meshDef.primitives;
-
-		var pending = [];
-
-		for ( var i = 0, il = primitives.length; i < il; i ++ ) {
-
-			var 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 ) {
-
-			var materials = results.slice( 0, results.length - 1 );
-			var geometries = results[ results.length - 1 ];
-
-			var meshes = [];
-
-			for ( var i = 0, il = geometries.length; i < il; i ++ ) {
-
-				var geometry = geometries[ i ];
-				var primitive = primitives[ i ];
-
-				// 1. create Mesh
-
-				var mesh;
-
-				var 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 && ! mesh.geometry.attributes.skinWeight.normalized ) {
-
-						// we normalize floating point skin weight array to fix malformed assets (see #15319)
-						// it's important to skip this for non-float32 data since normalizeSkinWeights assumes non-normalized inputs
-						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 ) );
-
-				if ( geometries.length > 1 ) mesh.name += '_' + i;
-
-				assignExtrasToUserData( mesh, meshDef );
-
-				parser.assignFinalMaterial( mesh );
-
-				meshes.push( mesh );
-
-			}
-
-			if ( meshes.length === 1 ) {
-
-				return meshes[ 0 ];
-
-			}
-
-			var group = new Group();
-
-			for ( var 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>}
-	 */
-	GLTFParser.prototype.loadCamera = function ( cameraIndex ) {
-
-		var camera;
-		var cameraDef = this.json.cameras[ cameraIndex ];
-		var 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<Object>}
-	 */
-	GLTFParser.prototype.loadSkin = function ( skinIndex ) {
-
-		var skinDef = this.json.skins[ skinIndex ];
-
-		var skinEntry = { joints: skinDef.joints };
-
-		if ( skinDef.inverseBindMatrices === undefined ) {
-
-			return Promise.resolve( skinEntry );
-
-		}
-
-		return this.getDependency( 'accessor', skinDef.inverseBindMatrices ).then( function ( accessor ) {
-
-			skinEntry.inverseBindMatrices = accessor;
-
-			return skinEntry;
-
-		} );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#animations
-	 * @param {number} animationIndex
-	 * @return {Promise<AnimationClip>}
-	 */
-	GLTFParser.prototype.loadAnimation = function ( animationIndex ) {
-
-		var json = this.json;
-
-		var animationDef = json.animations[ animationIndex ];
-
-		var pendingNodes = [];
-		var pendingInputAccessors = [];
-		var pendingOutputAccessors = [];
-		var pendingSamplers = [];
-		var pendingTargets = [];
-
-		for ( var i = 0, il = animationDef.channels.length; i < il; i ++ ) {
-
-			var channel = animationDef.channels[ i ];
-			var sampler = animationDef.samplers[ channel.sampler ];
-			var target = channel.target;
-			var name = target.node !== undefined ? target.node : target.id; // NOTE: target.id is deprecated.
-			var input = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.input ] : sampler.input;
-			var output = animationDef.parameters !== undefined ? animationDef.parameters[ sampler.output ] : sampler.output;
-
-			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 ) {
-
-			var nodes = dependencies[ 0 ];
-			var inputAccessors = dependencies[ 1 ];
-			var outputAccessors = dependencies[ 2 ];
-			var samplers = dependencies[ 3 ];
-			var targets = dependencies[ 4 ];
-
-			var tracks = [];
-
-			for ( var i = 0, il = nodes.length; i < il; i ++ ) {
-
-				var node = nodes[ i ];
-				var inputAccessor = inputAccessors[ i ];
-				var outputAccessor = outputAccessors[ i ];
-				var sampler = samplers[ i ];
-				var target = targets[ i ];
-
-				if ( node === undefined ) continue;
-
-				node.updateMatrix();
-				node.matrixAutoUpdate = true;
-
-				var 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:
-					default:
-
-						TypedKeyframeTrack = VectorKeyframeTrack;
-						break;
-
-				}
-
-				var targetName = node.name ? node.name : node.uuid;
-
-				var interpolation = sampler.interpolation !== undefined ? INTERPOLATION[ sampler.interpolation ] : InterpolateLinear;
-
-				var targetNames = [];
-
-				if ( PATH_PROPERTIES[ target.path ] === PATH_PROPERTIES.weights ) {
-
-					// Node may be a Group (glTF mesh with several primitives) or a Mesh.
-					node.traverse( function ( object ) {
-
-						if ( object.isMesh === true && object.morphTargetInfluences ) {
-
-							targetNames.push( object.name ? object.name : object.uuid );
-
-						}
-
-					} );
-
-				} else {
-
-					targetNames.push( targetName );
-
-				}
-
-				var outputArray = outputAccessor.array;
-
-				if ( outputAccessor.normalized ) {
-
-					var scale;
-
-					if ( outputArray.constructor === Int8Array ) {
-
-						scale = 1 / 127;
-
-					} else if ( outputArray.constructor === Uint8Array ) {
-
-						scale = 1 / 255;
-
-					} else if ( outputArray.constructor == Int16Array ) {
-
-						scale = 1 / 32767;
-
-					} else if ( outputArray.constructor === Uint16Array ) {
-
-						scale = 1 / 65535;
-
-					} else {
-
-						throw new Error( 'THREE.GLTFLoader: Unsupported output accessor component type.' );
-
-					}
-
-					var scaled = new Float32Array( outputArray.length );
-
-					for ( var j = 0, jl = outputArray.length; j < jl; j ++ ) {
-
-						scaled[ j ] = outputArray[ j ] * scale;
-
-					}
-
-					outputArray = scaled;
-
-				}
-
-				for ( var j = 0, jl = targetNames.length; j < jl; j ++ ) {
-
-					var track = new TypedKeyframeTrack(
-						targetNames[ j ] + '.' + PATH_PROPERTIES[ target.path ],
-						inputAccessor.array,
-						outputArray,
-						interpolation
-					);
-
-					// Override interpolation with custom factory method.
-					if ( sampler.interpolation === 'CUBICSPLINE' ) {
-
-						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.
-
-							return new GLTFCubicSplineInterpolant( this.times, this.values, this.getValueSize() / 3, result );
-
-						};
-
-						// Mark as CUBICSPLINE. `track.getInterpolation()` doesn't support custom interpolants.
-						track.createInterpolant.isInterpolantFactoryMethodGLTFCubicSpline = true;
-
-					}
-
-					tracks.push( track );
-
-				}
-
-			}
-
-			var name = animationDef.name ? animationDef.name : 'animation_' + animationIndex;
-
-			return new AnimationClip( name, undefined, tracks );
-
-		} );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#nodes-and-hierarchy
-	 * @param {number} nodeIndex
-	 * @return {Promise<Object3D>}
-	 */
-	GLTFParser.prototype.loadNode = function ( nodeIndex ) {
-
-		var json = this.json;
-		var extensions = this.extensions;
-		var parser = this;
-
-		var nodeDef = json.nodes[ nodeIndex ];
-
-		// reserve node's name before its dependencies, so the root has the intended name.
-		var nodeName = nodeDef.name ? parser.createUniqueName( nodeDef.name ) : '';
-
-		return ( function () {
-
-			var pending = [];
-
-			if ( nodeDef.mesh !== undefined ) {
-
-				pending.push( parser.getDependency( 'mesh', nodeDef.mesh ).then( function ( mesh ) {
-
-					var 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 ( var i = 0, il = nodeDef.weights.length; i < il; i ++ ) {
-
-								o.morphTargetInfluences[ i ] = nodeDef.weights[ i ];
-
-							}
-
-						} );
-
-					}
-
-					return node;
-
-				} ) );
-
-			}
-
-			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 );
-
-			} );
-
-			return Promise.all( pending );
-
-		}() ).then( function ( objects ) {
-
-			var 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 ( var 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 ) {
-
-				var 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 );
-
-				}
-
-			}
-
-			parser.associations.set( node, { type: 'nodes', index: nodeIndex } );
-
-			return node;
-
-		} );
-
-	};
-
-	/**
-	 * Specification: https://github.com/KhronosGroup/glTF/tree/master/specification/2.0#scenes
-	 * @param {number} sceneIndex
-	 * @return {Promise<Group>}
-	 */
-	GLTFParser.prototype.loadScene = function () {
-
-		// scene node hierachy builder
-
-		function buildNodeHierachy( nodeId, parentObject, json, parser ) {
-
-			var nodeDef = json.nodes[ nodeId ];
-
-			return parser.getDependency( 'node', nodeId ).then( function ( node ) {
-
-				if ( nodeDef.skin === undefined ) return node;
-
-				// build skeleton here as well
-
-				var skinEntry;
-
-				return parser.getDependency( 'skin', nodeDef.skin ).then( function ( skin ) {
-
-					skinEntry = skin;
-
-					var pendingJoints = [];
-
-					for ( var i = 0, il = skinEntry.joints.length; i < il; i ++ ) {
-
-						pendingJoints.push( parser.getDependency( 'node', skinEntry.joints[ i ] ) );
-
-					}
-
-					return Promise.all( pendingJoints );
-
-				} ).then( function ( jointNodes ) {
-
-					node.traverse( function ( mesh ) {
-
-						if ( ! mesh.isMesh ) return;
-
-						var bones = [];
-						var boneInverses = [];
-
-						for ( var j = 0, jl = jointNodes.length; j < jl; j ++ ) {
-
-							var jointNode = jointNodes[ j ];
-
-							if ( jointNode ) {
-
-								bones.push( jointNode );
-
-								var mat = new Matrix4();
-
-								if ( skinEntry.inverseBindMatrices !== undefined ) {
-
-									mat.fromArray( skinEntry.inverseBindMatrices.array, j * 16 );
-
-								}
-
-								boneInverses.push( mat );
-
-							} else {
-
-								console.warn( 'THREE.GLTFLoader: Joint "%s" could not be found.', skinEntry.joints[ j ] );
-
-							}
-
-						}
-
-						mesh.bind( new Skeleton( bones, boneInverses ), mesh.matrixWorld );
-
-					} );
-
-					return node;
-
-				} );
-
-			} ).then( function ( node ) {
-
-				// build node hierachy
-
-				parentObject.add( node );
-
-				var pending = [];
-
-				if ( nodeDef.children ) {
-
-					var children = nodeDef.children;
-
-					for ( var i = 0, il = children.length; i < il; i ++ ) {
-
-						var child = children[ i ];
-						pending.push( buildNodeHierachy( child, node, json, parser ) );
-
-					}
-
-				}
-
-				return Promise.all( pending );
-
-			} );
-
-		}
-
-		return function loadScene( sceneIndex ) {
-
-			var json = this.json;
-			var extensions = this.extensions;
-			var sceneDef = this.json.scenes[ sceneIndex ];
-			var parser = this;
-
-			// Loader returns Group, not Scene.
-			// See: https://github.com/mrdoob/three.js/issues/18342#issuecomment-578981172
-			var scene = new Group();
-			if ( sceneDef.name ) scene.name = parser.createUniqueName( sceneDef.name );
-
-			assignExtrasToUserData( scene, sceneDef );
-
-			if ( sceneDef.extensions ) addUnknownExtensionsToUserData( extensions, scene, sceneDef );
-
-			var nodeIds = sceneDef.nodes || [];
-
-			var pending = [];
-
-			for ( var i = 0, il = nodeIds.length; i < il; i ++ ) {
-
-				pending.push( buildNodeHierachy( nodeIds[ i ], scene, json, parser ) );
-
-			}
-
-			return Promise.all( pending ).then( function () {
-
-				return scene;
-
-			} );
-
-		};
-
-	}();
-
-	return GLTFLoader;
-
-} )();
-
-export { GLTFLoader };