text: ( function () {
  
  	const _taskCache = new WeakMap();
  
  	class Rhino3dmLoader extends THREE.Loader {
  
  		constructor( manager ) {
  
  			super( manager );
  			this.libraryPath = '';
  			this.libraryPending = null;
  			this.libraryBinary = null;
  			this.libraryConfig = {};
  			this.url = '';
  			this.workerLimit = 4;
  			this.workerPool = [];
  			this.workerNextTaskID = 1;
  			this.workerSourceURL = '';
  			this.workerConfig = {};
  			this.materials = [];
  
  		}
  
  		setLibraryPath( path ) {
  
  			this.libraryPath = path;
  			return this;
  
  		}
  
  		setWorkerLimit( workerLimit ) {
  
  			this.workerLimit = workerLimit;
  			return this;
  
  		}
  
  		load( url, onLoad, onProgress, onError ) {
  
  			const loader = new THREE.FileLoader( this.manager );
  			loader.setPath( this.path );
  			loader.setResponseType( 'arraybuffer' );
  			loader.setRequestHeader( this.requestHeader );
  			this.url = url;
  			loader.load( url, buffer => {
  
  				// Check for an existing task using this buffer. A transferred buffer cannot be transferred
  				// again from this thread.
  				if ( _taskCache.has( buffer ) ) {
  
  					const cachedTask = _taskCache.get( buffer );
  
  					return cachedTask.promise.then( onLoad ).catch( onError );
  
  				}
  
  				this.decodeObjects( buffer, url ).then( onLoad ).catch( onError );
  
  			}, onProgress, onError );
  
  		}
  
  		debug() {
  
  			console.log( 'Task load: ', this.workerPool.map( worker => worker._taskLoad ) );
  
  		}
  
  		decodeObjects( buffer, url ) {
  
  			let worker;
  			let taskID;
  			const taskCost = buffer.byteLength;
  
  			const objectPending = this._getWorker( taskCost ).then( _worker => {
  
  				worker = _worker;
  				taskID = this.workerNextTaskID ++; //hmmm
  
  				return new Promise( ( resolve, reject ) => {
  
  					worker._callbacks[ taskID ] = {
  						resolve,
  						reject
  					};
  					worker.postMessage( {
  						type: 'decode',
  						id: taskID,
  						buffer
  					}, [ buffer ] ); //this.debug();
  
  				} );
  
  			} ).then( message => this._createGeometry( message.data ) ); // Remove task from the task list.
  			// Note: replaced '.finally()' with '.catch().then()' block - iOS 11 support (#19416)
  
  
  			objectPending.catch( () => true ).then( () => {
  
  				if ( worker && taskID ) {
  
  					this._releaseTask( worker, taskID ); //this.debug();
  
  				}
  
  			} ); // Cache the task result.
  
  			_taskCache.set( buffer, {
  				url: url,
  				promise: objectPending
  			} );
  
  			return objectPending;
  
  		}
  
  		parse( data, onLoad, onError ) {
  
  			this.decodeObjects( data, '' ).then( onLoad ).catch( onError );
  
  		}
  
  		_compareMaterials( material ) {
  
  			const mat = {};
  			mat.name = material.name;
  			mat.color = {};
  			mat.color.r = material.color.r;
  			mat.color.g = material.color.g;
  			mat.color.b = material.color.b;
  			mat.type = material.type;
  
  			for ( let i = 0; i < this.materials.length; i ++ ) {
  
  				const m = this.materials[ i ];
  				const _mat = {};
  				_mat.name = m.name;
  				_mat.color = {};
  				_mat.color.r = m.color.r;
  				_mat.color.g = m.color.g;
  				_mat.color.b = m.color.b;
  				_mat.type = m.type;
  
  				if ( JSON.stringify( mat ) === JSON.stringify( _mat ) ) {
  
  					return m;
  
  				}
  
  			}
  
  			this.materials.push( material );
  			return material;
  
  		}
  
  		_createMaterial( material ) {
  
  			if ( material === undefined ) {
  
  				return new THREE.MeshStandardMaterial( {
  					color: new THREE.Color( 1, 1, 1 ),
  					metalness: 0.8,
  					name: 'default',
  					side: 2
  				} );
  
  			}
  
  			const _diffuseColor = material.diffuseColor;
  			const diffusecolor = new THREE.Color( _diffuseColor.r / 255.0, _diffuseColor.g / 255.0, _diffuseColor.b / 255.0 );
  
  			if ( _diffuseColor.r === 0 && _diffuseColor.g === 0 && _diffuseColor.b === 0 ) {
  
  				diffusecolor.r = 1;
  				diffusecolor.g = 1;
  				diffusecolor.b = 1;
  
  			} // console.log( material );
  
  
  			const mat = new THREE.MeshStandardMaterial( {
  				color: diffusecolor,
  				name: material.name,
  				side: 2,
  				transparent: material.transparency > 0 ? true : false,
  				opacity: 1.0 - material.transparency
  			} );
  			const textureLoader = new THREE.TextureLoader();
  
  			for ( let i = 0; i < material.textures.length; i ++ ) {
  
  				const texture = material.textures[ i ];
  
  				if ( texture.image !== null ) {
  
  					const map = textureLoader.load( texture.image );
  
  					switch ( texture.type ) {
  
  						case 'Diffuse':
  							mat.map = map;
  							break;
  
  						case 'Bump':
  							mat.bumpMap = map;
  							break;
  
  						case 'Transparency':
  							mat.alphaMap = map;
  							mat.transparent = true;
  							break;
  
  						case 'Emap':
  							mat.envMap = map;
  							break;
  
  					}
  
  				}
  
  			}
  
  			return mat;
  
  		}
  
  		_createGeometry( data ) {
  
  			// console.log(data);
  			const object = new THREE.Object3D();
  			const instanceDefinitionObjects = [];
  			const instanceDefinitions = [];
  			const instanceReferences = [];
  			object.userData[ 'layers' ] = data.layers;
  			object.userData[ 'groups' ] = data.groups;
  			object.userData[ 'settings' ] = data.settings;
  			object.userData[ 'objectType' ] = 'File3dm';
  			object.userData[ 'materials' ] = null;
  			object.name = this.url;
  			let objects = data.objects;
  			const materials = data.materials;
  
  			for ( let i = 0; i < objects.length; i ++ ) {
  
  				const obj = objects[ i ];
  				const attributes = obj.attributes;
  
  				switch ( obj.objectType ) {
  
  					case 'InstanceDefinition':
  						instanceDefinitions.push( obj );
  						break;
  
  					case 'InstanceReference':
  						instanceReferences.push( obj );
  						break;
  
  					default:
  						let _object;
  
  						if ( attributes.materialIndex >= 0 ) {
  
  							const rMaterial = materials[ attributes.materialIndex ];
  
  							let material = this._createMaterial( rMaterial );
  
  							material = this._compareMaterials( material );
  							_object = this._createObject( obj, material );
  
  						} else {
  
  							const material = this._createMaterial();
  
  							_object = this._createObject( obj, material );
  
  						}
  
  						if ( _object === undefined ) {
  
  							continue;
  
  						}
  
  						const layer = data.layers[ attributes.layerIndex ];
  						_object.visible = layer ? data.layers[ attributes.layerIndex ].visible : true;
  
  						if ( attributes.isInstanceDefinitionObject ) {
  
  							instanceDefinitionObjects.push( _object );
  
  						} else {
  
  							object.add( _object );
  
  						}
  
  						break;
  
  				}
  
  			}
  
  			for ( let i = 0; i < instanceDefinitions.length; i ++ ) {
  
  				const iDef = instanceDefinitions[ i ];
  				objects = [];
  
  				for ( let j = 0; j < iDef.attributes.objectIds.length; j ++ ) {
  
  					const objId = iDef.attributes.objectIds[ j ];
  
  					for ( let p = 0; p < instanceDefinitionObjects.length; p ++ ) {
  
  						const idoId = instanceDefinitionObjects[ p ].userData.attributes.id;
  
  						if ( objId === idoId ) {
  
  							objects.push( instanceDefinitionObjects[ p ] );
  
  						}
  
  					}
  
  				} // Currently clones geometry and does not take advantage of instancing
  
  
  				for ( let j = 0; j < instanceReferences.length; j ++ ) {
  
  					const iRef = instanceReferences[ j ];
  
  					if ( iRef.geometry.parentIdefId === iDef.attributes.id ) {
  
  						const iRefObject = new THREE.Object3D();
  						const xf = iRef.geometry.xform.array;
  						const matrix = new THREE.Matrix4();
  						matrix.set( xf[ 0 ], xf[ 1 ], xf[ 2 ], xf[ 3 ], xf[ 4 ], xf[ 5 ], xf[ 6 ], xf[ 7 ], xf[ 8 ], xf[ 9 ], xf[ 10 ], xf[ 11 ], xf[ 12 ], xf[ 13 ], xf[ 14 ], xf[ 15 ] );
  						iRefObject.applyMatrix4( matrix );
  
  						for ( let p = 0; p < objects.length; p ++ ) {
  
  							iRefObject.add( objects[ p ].clone( true ) );
  
  						}
  
  						object.add( iRefObject );
  
  					}
  
  				}
  
  			}
  
  			object.userData[ 'materials' ] = this.materials;
  			return object;
  
  		}
  
  		_createObject( obj, mat ) {
  
  			const loader = new THREE.BufferGeometryLoader();
  			const attributes = obj.attributes;
  
  			let geometry, material, _color, color;
  
  			switch ( obj.objectType ) {
  
  				case 'Point':
  				case 'PointSet':
  					geometry = loader.parse( obj.geometry );
  
  					if ( geometry.attributes.hasOwnProperty( 'color' ) ) {
  
  						material = new THREE.PointsMaterial( {
  							vertexColors: true,
  							sizeAttenuation: false,
  							size: 2
  						} );
  
  					} else {
  
  						_color = attributes.drawColor;
  						color = new THREE.Color( _color.r / 255.0, _color.g / 255.0, _color.b / 255.0 );
  						material = new THREE.PointsMaterial( {
  							color: color,
  							sizeAttenuation: false,
  							size: 2
  						} );
  
  					}
  
  					material = this._compareMaterials( material );
  					const points = new THREE.Points( geometry, material );
  					points.userData[ 'attributes' ] = attributes;
  					points.userData[ 'objectType' ] = obj.objectType;
  
  					if ( attributes.name ) {
  
  						points.name = attributes.name;
  
  					}
  
  					return points;
  
  				case 'Mesh':
  				case 'Extrusion':
  				case 'SubD':
  				case 'Brep':
  					if ( obj.geometry === null ) return;
  					geometry = loader.parse( obj.geometry );
  
  					if ( geometry.attributes.hasOwnProperty( 'color' ) ) {
  
  						mat.vertexColors = true;
  
  					}
  
  					if ( mat === null ) {
  
  						mat = this._createMaterial();
  						mat = this._compareMaterials( mat );
  
  					}
  
  					const mesh = new THREE.Mesh( geometry, mat );
  					mesh.castShadow = attributes.castsShadows;
  					mesh.receiveShadow = attributes.receivesShadows;
  					mesh.userData[ 'attributes' ] = attributes;
  					mesh.userData[ 'objectType' ] = obj.objectType;
  
  					if ( attributes.name ) {
  
  						mesh.name = attributes.name;
  
  					}
  
  					return mesh;
  
  				case 'Curve':
  					geometry = loader.parse( obj.geometry );
  					_color = attributes.drawColor;
  					color = new THREE.Color( _color.r / 255.0, _color.g / 255.0, _color.b / 255.0 );
  					material = new THREE.LineBasicMaterial( {
  						color: color
  					} );
  					material = this._compareMaterials( material );
  					const lines = new THREE.Line( geometry, material );
  					lines.userData[ 'attributes' ] = attributes;
  					lines.userData[ 'objectType' ] = obj.objectType;
  
  					if ( attributes.name ) {
  
  						lines.name = attributes.name;
  
  					}
  
  					return lines;
  
  				case 'TextDot':
  					geometry = obj.geometry;
  					const ctx = document.createElement( 'canvas' ).getContext( '2d' );
  					const font = `${geometry.fontHeight}px ${geometry.fontFace}`;
  					ctx.font = font;
  					const width = ctx.measureText( geometry.text ).width + 10;
  					const height = geometry.fontHeight + 10;
  					const r = window.devicePixelRatio;
  					ctx.canvas.width = width * r;
  					ctx.canvas.height = height * r;
  					ctx.canvas.style.width = width + 'px';
  					ctx.canvas.style.height = height + 'px';
  					ctx.setTransform( r, 0, 0, r, 0, 0 );
  					ctx.font = font;
  					ctx.textBaseline = 'middle';
  					ctx.textAlign = 'center';
  					color = attributes.drawColor;
  					ctx.fillStyle = `rgba(${color.r},${color.g},${color.b},${color.a})`;
  					ctx.fillRect( 0, 0, width, height );
  					ctx.fillStyle = 'white';
  					ctx.fillText( geometry.text, width / 2, height / 2 );
  					const texture = new THREE.CanvasTexture( ctx.canvas );
  					texture.minFilter = THREE.LinearFilter;
  					texture.wrapS = THREE.ClampToEdgeWrapping;
  					texture.wrapT = THREE.ClampToEdgeWrapping;
  					material = new THREE.SpriteMaterial( {
  						map: texture,
  						depthTest: false
  					} );
  					const sprite = new THREE.Sprite( material );
  					sprite.position.set( geometry.point[ 0 ], geometry.point[ 1 ], geometry.point[ 2 ] );
  					sprite.scale.set( width / 10, height / 10, 1.0 );
  					sprite.userData[ 'attributes' ] = attributes;
  					sprite.userData[ 'objectType' ] = obj.objectType;
  
  					if ( attributes.name ) {
  
  						sprite.name = attributes.name;
  
  					}
  
  					return sprite;
  
  				case 'Light':
  					geometry = obj.geometry;
  					let light;
  
  					if ( geometry.isDirectionalLight ) {
  
  						light = new THREE.DirectionalLight();
  						light.castShadow = attributes.castsShadows;
  						light.position.set( geometry.location[ 0 ], geometry.location[ 1 ], geometry.location[ 2 ] );
  						light.target.position.set( geometry.direction[ 0 ], geometry.direction[ 1 ], geometry.direction[ 2 ] );
  						light.shadow.normalBias = 0.1;
  
  					} else if ( geometry.isPointLight ) {
  
  						light = new THREE.PointLight();
  						light.castShadow = attributes.castsShadows;
  						light.position.set( geometry.location[ 0 ], geometry.location[ 1 ], geometry.location[ 2 ] );
  						light.shadow.normalBias = 0.1;
  
  					} else if ( geometry.isRectangularLight ) {
  
  						light = new THREE.RectAreaLight();
  						const width = Math.abs( geometry.width[ 2 ] );
  						const height = Math.abs( geometry.length[ 0 ] );
  						light.position.set( geometry.location[ 0 ] - height / 2, geometry.location[ 1 ], geometry.location[ 2 ] - width / 2 );
  						light.height = height;
  						light.width = width;
  						light.lookAt( new THREE.Vector3( geometry.direction[ 0 ], geometry.direction[ 1 ], geometry.direction[ 2 ] ) );
  
  					} else if ( geometry.isSpotLight ) {
  
  						light = new THREE.SpotLight();
  						light.castShadow = attributes.castsShadows;
  						light.position.set( geometry.location[ 0 ], geometry.location[ 1 ], geometry.location[ 2 ] );
  						light.target.position.set( geometry.direction[ 0 ], geometry.direction[ 1 ], geometry.direction[ 2 ] );
  						light.angle = geometry.spotAngleRadians;
  						light.shadow.normalBias = 0.1;
  
  					} else if ( geometry.isLinearLight ) {
  
  						console.warn( 'THREE.3DMLoader:  No conversion exists for linear lights.' );
  						return;
  
  					}
  
  					if ( light ) {
  
  						light.intensity = geometry.intensity;
  						_color = geometry.diffuse;
  						color = new THREE.Color( _color.r / 255.0, _color.g / 255.0, _color.b / 255.0 );
  						light.color = color;
  						light.userData[ 'attributes' ] = attributes;
  						light.userData[ 'objectType' ] = obj.objectType;
  
  					}
  
  					return light;
  
  			}
  
  		}
  
  		_initLibrary() {
  
  			if ( ! this.libraryPending ) {
  
  				// Load rhino3dm wrapper.
  				const jsLoader = new THREE.FileLoader( this.manager );
  				jsLoader.setPath( this.libraryPath );
  				const jsContent = new Promise( ( resolve, reject ) => {
  
  					jsLoader.load( 'rhino3dm.js', resolve, undefined, reject );
  
  				} ); // Load rhino3dm WASM binary.
  
  				const binaryLoader = new THREE.FileLoader( this.manager );
  				binaryLoader.setPath( this.libraryPath );
  				binaryLoader.setResponseType( 'arraybuffer' );
  				const binaryContent = new Promise( ( resolve, reject ) => {
  
  					binaryLoader.load( 'rhino3dm.wasm', resolve, undefined, reject );
  
  				} );
  				this.libraryPending = Promise.all( [ jsContent, binaryContent ] ).then( ( [ jsContent, binaryContent ] ) => {
  
  					//this.libraryBinary = binaryContent;
  					this.libraryConfig.wasmBinary = binaryContent;
  					const fn = Rhino3dmWorker.toString();
  					const body = [ '/* rhino3dm.js */', jsContent, '/* worker */', fn.substring( fn.indexOf( '{' ) + 1, fn.lastIndexOf( '}' ) ) ].join( '\n' );
  					this.workerSourceURL = URL.createObjectURL( new Blob( [ body ] ) );
  
  				} );
  
  			}
  
  			return this.libraryPending;
  
  		}
  
  		_getWorker( taskCost ) {
  
  			return this._initLibrary().then( () => {
  
  				if ( this.workerPool.length < this.workerLimit ) {
  
  					const worker = new Worker( this.workerSourceURL );
  					worker._callbacks = {};
  					worker._taskCosts = {};
  					worker._taskLoad = 0;
  					worker.postMessage( {
  						type: 'init',
  						libraryConfig: this.libraryConfig
  					} );
  
  					worker.onmessage = function ( e ) {
  
  						const message = e.data;
  
  						switch ( message.type ) {
  
  							case 'decode':
  								worker._callbacks[ message.id ].resolve( message );
  
  								break;
  
  							case 'error':
  								worker._callbacks[ message.id ].reject( message );
  
  								break;
  
  							default:
  								console.error( 'THREE.Rhino3dmLoader: Unexpected message, "' + message.type + '"' );
  
  						}
  
  					};
  
  					this.workerPool.push( worker );
  
  				} else {
  
  					this.workerPool.sort( function ( a, b ) {
  
  						return a._taskLoad > b._taskLoad ? - 1 : 1;
  
  					} );
  
  				}
  
  				const worker = this.workerPool[ this.workerPool.length - 1 ];
  				worker._taskLoad += taskCost;
  				return worker;
  
  			} );
  
  		}
  
  		_releaseTask( worker, taskID ) {
  
  			worker._taskLoad -= worker._taskCosts[ taskID ];
  			delete worker._callbacks[ taskID ];
  			delete worker._taskCosts[ taskID ];
  
  		}
  
  		dispose() {
  
  			for ( let i = 0; i < this.workerPool.length; ++ i ) {
  
  				this.workerPool[ i ].terminate();
  
  			}
  
  			this.workerPool.length = 0;
  			return this;
  
  		}
  
  	}
  	/* WEB WORKER */
  
  
  	function Rhino3dmWorker() {
  
  		let libraryPending;
  		let libraryConfig;
  		let rhino;
  
  		onmessage = function ( e ) {
  
  			const message = e.data;
  
  			switch ( message.type ) {
  
  				case 'init':
  					libraryConfig = message.libraryConfig;
  					const wasmBinary = libraryConfig.wasmBinary;
  					let RhinoModule;
  					libraryPending = new Promise( function ( resolve ) {
  
  						/* Like Basis THREE.Loader */
  						RhinoModule = {
  							wasmBinary,
  							onRuntimeInitialized: resolve
  						};
  						rhino3dm( RhinoModule ); // eslint-disable-line no-undef
  
  					} ).then( () => {
  
  						rhino = RhinoModule;
  
  					} );
  					break;
  
  				case 'decode':
  					const buffer = message.buffer;
  					libraryPending.then( () => {
  
  						const data = decodeObjects( rhino, buffer );
  						self.postMessage( {
  							type: 'decode',
  							id: message.id,
  							data
  						} );
  
  					} );
  					break;
  
  			}
  
  		};
  
  		function decodeObjects( rhino, buffer ) {
  
  			const arr = new Uint8Array( buffer );
  			const doc = rhino.File3dm.fromByteArray( arr );
  			const objects = [];
  			const materials = [];
  			const layers = [];
  			const views = [];
  			const namedViews = [];
  			const groups = []; //Handle objects
  
  			const objs = doc.objects();
  			const cnt = objs.count;
  
  			for ( let i = 0; i < cnt; i ++ ) {
  
  				const _object = objs.get( i );
  
  				const object = extractObjectData( _object, doc );
  
  				_object.delete();
  
  				if ( object ) {
  
  					objects.push( object );
  
  				}
  
  			} // Handle instance definitions
  			// console.log( `Instance Definitions Count: ${doc.instanceDefinitions().count()}` );
  
  
  			for ( let i = 0; i < doc.instanceDefinitions().count(); i ++ ) {
  
  				const idef = doc.instanceDefinitions().get( i );
  				const idefAttributes = extractProperties( idef );
  				idefAttributes.objectIds = idef.getObjectIds();
  				objects.push( {
  					geometry: null,
  					attributes: idefAttributes,
  					objectType: 'InstanceDefinition'
  				} );
  
  			} // Handle materials
  
  
  			const textureTypes = [// rhino.TextureType.Bitmap,
  				rhino.TextureType.Diffuse, rhino.TextureType.Bump, rhino.TextureType.Transparency, rhino.TextureType.Opacity, rhino.TextureType.Emap ];
  			const pbrTextureTypes = [ rhino.TextureType.PBR_BaseColor, rhino.TextureType.PBR_Subsurface, rhino.TextureType.PBR_SubsurfaceScattering, rhino.TextureType.PBR_SubsurfaceScatteringRadius, rhino.TextureType.PBR_Metallic, rhino.TextureType.PBR_Specular, rhino.TextureType.PBR_SpecularTint, rhino.TextureType.PBR_Roughness, rhino.TextureType.PBR_Anisotropic, rhino.TextureType.PBR_Anisotropic_Rotation, rhino.TextureType.PBR_Sheen, rhino.TextureType.PBR_SheenTint, rhino.TextureType.PBR_Clearcoat, rhino.TextureType.PBR_ClearcoatBump, rhino.TextureType.PBR_ClearcoatRoughness, rhino.TextureType.PBR_OpacityIor, rhino.TextureType.PBR_OpacityRoughness, rhino.TextureType.PBR_Emission, rhino.TextureType.PBR_AmbientOcclusion, rhino.TextureType.PBR_Displacement ];
  
  			for ( let i = 0; i < doc.materials().count(); i ++ ) {
  
  				const _material = doc.materials().get( i );
  
  				const _pbrMaterial = _material.physicallyBased();
  
  				let material = extractProperties( _material );
  				const textures = [];
  
  				for ( let j = 0; j < textureTypes.length; j ++ ) {
  
  					const _texture = _material.getTexture( textureTypes[ j ] );
  
  					if ( _texture ) {
  
  						let textureType = textureTypes[ j ].constructor.name;
  						textureType = textureType.substring( 12, textureType.length );
  						const texture = {
  							type: textureType
  						};
  						const image = doc.getEmbeddedFileAsBase64( _texture.fileName );
  
  						if ( image ) {
  
  							texture.image = 'data:image/png;base64,' + image;
  
  						} else {
  
  							console.warn( `THREE.3DMLoader: Image for ${textureType} texture not embedded in file.` );
  							texture.image = null;
  
  						}
  
  						textures.push( texture );
  
  						_texture.delete();
  
  					}
  
  				}
  
  				material.textures = textures;
  
  				if ( _pbrMaterial.supported ) {
  
  					console.log( 'pbr true' );
  
  					for ( let j = 0; j < pbrTextureTypes.length; j ++ ) {
  
  						const _texture = _material.getTexture( textureTypes[ j ] );
  
  						if ( _texture ) {
  
  							const image = doc.getEmbeddedFileAsBase64( _texture.fileName );
  							let textureType = textureTypes[ j ].constructor.name;
  							textureType = textureType.substring( 12, textureType.length );
  							const texture = {
  								type: textureType,
  								image: 'data:image/png;base64,' + image
  							};
  							textures.push( texture );
  
  							_texture.delete();
  
  						}
  
  					}
  
  					const pbMaterialProperties = extractProperties( _material.physicallyBased() );
  					material = Object.assign( pbMaterialProperties, material );
  
  				}
  
  				materials.push( material );
  
  				_material.delete();
  
  				_pbrMaterial.delete();
  
  			} // Handle layers
  
  
  			for ( let i = 0; i < doc.layers().count(); i ++ ) {
  
  				const _layer = doc.layers().get( i );
  
  				const layer = extractProperties( _layer );
  				layers.push( layer );
  
  				_layer.delete();
  
  			} // Handle views
  
  
  			for ( let i = 0; i < doc.views().count(); i ++ ) {
  
  				const _view = doc.views().get( i );
  
  				const view = extractProperties( _view );
  				views.push( view );
  
  				_view.delete();
  
  			} // Handle named views
  
  
  			for ( let i = 0; i < doc.namedViews().count(); i ++ ) {
  
  				const _namedView = doc.namedViews().get( i );
  
  				const namedView = extractProperties( _namedView );
  				namedViews.push( namedView );
  
  				_namedView.delete();
  
  			} // Handle groups
  
  
  			for ( let i = 0; i < doc.groups().count(); i ++ ) {
  
  				const _group = doc.groups().get( i );
  
  				const group = extractProperties( _group );
  				groups.push( group );
  
  				_group.delete();
  
  			} // Handle settings
  
  
  			const settings = extractProperties( doc.settings() ); //TODO: Handle other document stuff like dimstyles, instance definitions, bitmaps etc.
  			// Handle dimstyles
  			// console.log( `Dimstyle Count: ${doc.dimstyles().count()}` );
  			// Handle bitmaps
  			// console.log( `Bitmap Count: ${doc.bitmaps().count()}` );
  			// Handle strings -- this seems to be broken at the moment in rhino3dm
  			// console.log( `Document Strings Count: ${doc.strings().count()}` );
  
  			/*
      for( var i = 0; i < doc.strings().count(); i++ ){
      		var _string= doc.strings().get( i );
      		console.log(_string);
      	var string = extractProperties( _group );
      		strings.push( string );
      		_string.delete();
      	}
      */
  
  			doc.delete();
  			return {
  				objects,
  				materials,
  				layers,
  				views,
  				namedViews,
  				groups,
  				settings
  			};
  
  		}
  
  		function extractObjectData( object, doc ) {
  
  			const _geometry = object.geometry();
  
  			const _attributes = object.attributes();
  
  			let objectType = _geometry.objectType;
  			let geometry, attributes, position, data, mesh; // skip instance definition objects
  			//if( _attributes.isInstanceDefinitionObject ) { continue; }
  			// TODO: handle other geometry types
  
  			switch ( objectType ) {
  
  				case rhino.ObjectType.Curve:
  					const pts = curveToPoints( _geometry, 100 );
  					position = {};
  					attributes = {};
  					data = {};
  					position.itemSize = 3;
  					position.type = 'Float32Array';
  					position.array = [];
  
  					for ( let j = 0; j < pts.length; j ++ ) {
  
  						position.array.push( pts[ j ][ 0 ] );
  						position.array.push( pts[ j ][ 1 ] );
  						position.array.push( pts[ j ][ 2 ] );
  
  					}
  
  					attributes.position = position;
  					data.attributes = attributes;
  					geometry = {
  						data
  					};
  					break;
  
  				case rhino.ObjectType.Point:
  					const pt = _geometry.location;
  					position = {};
  					const color = {};
  					attributes = {};
  					data = {};
  					position.itemSize = 3;
  					position.type = 'Float32Array';
  					position.array = [ pt[ 0 ], pt[ 1 ], pt[ 2 ] ];
  
  					const _color = _attributes.drawColor( doc );
  
  					color.itemSize = 3;
  					color.type = 'Float32Array';
  					color.array = [ _color.r / 255.0, _color.g / 255.0, _color.b / 255.0 ];
  					attributes.position = position;
  					attributes.color = color;
  					data.attributes = attributes;
  					geometry = {
  						data
  					};
  					break;
  
  				case rhino.ObjectType.PointSet:
  				case rhino.ObjectType.Mesh:
  					geometry = _geometry.toThreejsJSON();
  					break;
  
  				case rhino.ObjectType.Brep:
  					const faces = _geometry.faces();
  
  					mesh = new rhino.Mesh();
  
  					for ( let faceIndex = 0; faceIndex < faces.count; faceIndex ++ ) {
  
  						const face = faces.get( faceIndex );
  
  						const _mesh = face.getMesh( rhino.MeshType.Any );
  
  						if ( _mesh ) {
  
  							mesh.append( _mesh );
  
  							_mesh.delete();
  
  						}
  
  						face.delete();
  
  					}
  
  					if ( mesh.faces().count > 0 ) {
  
  						mesh.compact();
  						geometry = mesh.toThreejsJSON();
  						faces.delete();
  
  					}
  
  					mesh.delete();
  					break;
  
  				case rhino.ObjectType.Extrusion:
  					mesh = _geometry.getMesh( rhino.MeshType.Any );
  
  					if ( mesh ) {
  
  						geometry = mesh.toThreejsJSON();
  						mesh.delete();
  
  					}
  
  					break;
  
  				case rhino.ObjectType.TextDot:
  					geometry = extractProperties( _geometry );
  					break;
  
  				case rhino.ObjectType.Light:
  					geometry = extractProperties( _geometry );
  					break;
  
  				case rhino.ObjectType.InstanceReference:
  					geometry = extractProperties( _geometry );
  					geometry.xform = extractProperties( _geometry.xform );
  					geometry.xform.array = _geometry.xform.toFloatArray( true );
  					break;
  
  				case rhino.ObjectType.SubD:
  					// TODO: precalculate resulting vertices and faces and warn on excessive results
  					_geometry.subdivide( 3 );
  
  					mesh = rhino.Mesh.createFromSubDControlNet( _geometry );
  
  					if ( mesh ) {
  
  						geometry = mesh.toThreejsJSON();
  						mesh.delete();
  
  					}
  
  					break;
  
  					/*
        case rhino.ObjectType.Annotation:
        case rhino.ObjectType.Hatch:
        case rhino.ObjectType.ClipPlane:
        */
  
  				default:
  					console.warn( `THREE.3DMLoader: TODO: Implement ${objectType.constructor.name}` );
  					break;
  
  			}
  
  			if ( geometry ) {
  
  				attributes = extractProperties( _attributes );
  				attributes.geometry = extractProperties( _geometry );
  
  				if ( _attributes.groupCount > 0 ) {
  
  					attributes.groupIds = _attributes.getGroupList();
  
  				}
  
  				if ( _attributes.userStringCount > 0 ) {
  
  					attributes.userStrings = _attributes.getUserStrings();
  
  				}
  
  				if ( _geometry.userStringCount > 0 ) {
  
  					attributes.geometry.userStrings = _geometry.getUserStrings();
  
  				}
  
  				attributes.drawColor = _attributes.drawColor( doc );
  				objectType = objectType.constructor.name;
  				objectType = objectType.substring( 11, objectType.length );
  				return {
  					geometry,
  					attributes,
  					objectType
  				};
  
  			} else {
  
  				console.warn( `THREE.3DMLoader: ${objectType.constructor.name} has no associated mesh geometry.` );
  
  			}
  
  		}
  
  		function extractProperties( object ) {
  
  			const result = {};
  
  			for ( const property in object ) {
  
  				const value = object[ property ];
  
  				if ( typeof value !== 'function' ) {
  
  					if ( typeof value === 'object' && value !== null && value.hasOwnProperty( 'constructor' ) ) {
  
  						result[ property ] = {
  							name: value.constructor.name,
  							value: value.value
  						};
  
  					} else {
  
  						result[ property ] = value;
  
  					}
  
  				} else { // these are functions that could be called to extract more data.
  					//console.log( `${property}: ${object[ property ].constructor.name}` );
  				}
  
  			}
  
  			return result;
  
  		}
  
  		function curveToPoints( curve, pointLimit ) {
  
  			let pointCount = pointLimit;
  			let rc = [];
  			const ts = [];
  
  			if ( curve instanceof rhino.LineCurve ) {
  
  				return [ curve.pointAtStart, curve.pointAtEnd ];
  
  			}
  
  			if ( curve instanceof rhino.PolylineCurve ) {
  
  				pointCount = curve.pointCount;
  
  				for ( let i = 0; i < pointCount; i ++ ) {
  
  					rc.push( curve.point( i ) );
  
  				}
  
  				return rc;
  
  			}
  
  			if ( curve instanceof rhino.PolyCurve ) {
  
  				const segmentCount = curve.segmentCount;
  
  				for ( let i = 0; i < segmentCount; i ++ ) {
  
  					const segment = curve.segmentCurve( i );
  					const segmentArray = curveToPoints( segment, pointCount );
  					rc = rc.concat( segmentArray );
  					segment.delete();
  
  				}
  
  				return rc;
  
  			}
  
  			if ( curve instanceof rhino.ArcCurve ) {
  
  				pointCount = Math.floor( curve.angleDegrees / 5 );
  				pointCount = pointCount < 2 ? 2 : pointCount; // alternative to this hardcoded version: https://stackoverflow.com/a/18499923/2179399
  
  			}
  
  			if ( curve instanceof rhino.NurbsCurve && curve.degree === 1 ) {
  
  				const pLine = curve.tryGetPolyline();
  
  				for ( let i = 0; i < pLine.count; i ++ ) {
  
  					rc.push( pLine.get( i ) );
  
  				}
  
  				pLine.delete();
  				return rc;
  
  			}
  
  			const domain = curve.domain;
  			const divisions = pointCount - 1.0;
  
  			for ( let j = 0; j < pointCount; j ++ ) {
  
  				const t = domain[ 0 ] + j / divisions * ( domain[ 1 ] - domain[ 0 ] );
  
  				if ( t === domain[ 0 ] || t === domain[ 1 ] ) {
  
  					ts.push( t );
  					continue;
  
  				}
  
  				const tan = curve.tangentAt( t );
  				const prevTan = curve.tangentAt( ts.slice( - 1 )[ 0 ] ); // Duplicated from THREE.Vector3
  				// How to pass imports to worker?
  
  				const tS = tan[ 0 ] * tan[ 0 ] + tan[ 1 ] * tan[ 1 ] + tan[ 2 ] * tan[ 2 ];
  				const ptS = prevTan[ 0 ] * prevTan[ 0 ] + prevTan[ 1 ] * prevTan[ 1 ] + prevTan[ 2 ] * prevTan[ 2 ];
  				const denominator = Math.sqrt( tS * ptS );
  				let angle;
  
  				if ( denominator === 0 ) {
  
  					angle = Math.PI / 2;
  
  				} else {
  
  					const theta = ( tan.x * prevTan.x + tan.y * prevTan.y + tan.z * prevTan.z ) / denominator;
  					angle = Math.acos( Math.max( - 1, Math.min( 1, theta ) ) );
  
  				}
  
  				if ( angle < 0.1 ) continue;
  				ts.push( t );
  
  			}
  
  			rc = ts.map( t => curve.pointAt( t ) );
  			return rc;
  
  		}
  
  	}
  
  	THREE.Rhino3dmLoader = Rhino3dmLoader;
  
  } )();
  