添加关照、全局等高线、修改图层问题

dist/electron/static/sdk/three/jsm/exporters/DRACOExporter.js

@@ -0,0 +1,267 @@
+import { Color } from 'three';
+
+/**
+ * Export draco compressed files from threejs geometry objects.
+ *
+ * Draco files are compressed and usually are smaller than conventional 3D file formats.
+ *
+ * The exporter receives a options object containing
+ *  - decodeSpeed, indicates how to tune the encoder regarding decode speed (0 gives better speed but worst quality)
+ *  - encodeSpeed, indicates how to tune the encoder parameters (0 gives better speed but worst quality)
+ *  - encoderMethod
+ *  - quantization, indicates the presision of each type of data stored in the draco file in the order (POSITION, NORMAL, COLOR, TEX_COORD, GENERIC)
+ *  - exportUvs
+ *  - exportNormals
+ *  - exportColor
+ */
+
+/* global DracoEncoderModule */
+
+class DRACOExporter {
+
+	parse( object, options = {} ) {
+
+		options = Object.assign( {
+			decodeSpeed: 5,
+			encodeSpeed: 5,
+			encoderMethod: DRACOExporter.MESH_EDGEBREAKER_ENCODING,
+			quantization: [ 16, 8, 8, 8, 8 ],
+			exportUvs: true,
+			exportNormals: true,
+			exportColor: false,
+		}, options );
+
+		if ( DracoEncoderModule === undefined ) {
+
+			throw new Error( 'THREE.DRACOExporter: required the draco_encoder to work.' );
+
+		}
+
+		const geometry = object.geometry;
+
+		const dracoEncoder = DracoEncoderModule();
+		const encoder = new dracoEncoder.Encoder();
+		let builder;
+		let dracoObject;
+
+		if ( object.isMesh === true ) {
+
+			builder = new dracoEncoder.MeshBuilder();
+			dracoObject = new dracoEncoder.Mesh();
+
+			const vertices = geometry.getAttribute( 'position' );
+			builder.AddFloatAttributeToMesh( dracoObject, dracoEncoder.POSITION, vertices.count, vertices.itemSize, vertices.array );
+
+			const faces = geometry.getIndex();
+
+			if ( faces !== null ) {
+
+				builder.AddFacesToMesh( dracoObject, faces.count / 3, faces.array );
+
+			} else {
+
+				const faces = new ( vertices.count > 65535 ? Uint32Array : Uint16Array )( vertices.count );
+
+				for ( let i = 0; i < faces.length; i ++ ) {
+
+					faces[ i ] = i;
+
+				}
+
+				builder.AddFacesToMesh( dracoObject, vertices.count, faces );
+
+			}
+
+			if ( options.exportNormals === true ) {
+
+				const normals = geometry.getAttribute( 'normal' );
+
+				if ( normals !== undefined ) {
+
+					builder.AddFloatAttributeToMesh( dracoObject, dracoEncoder.NORMAL, normals.count, normals.itemSize, normals.array );
+
+				}
+
+			}
+
+			if ( options.exportUvs === true ) {
+
+				const uvs = geometry.getAttribute( 'uv' );
+
+				if ( uvs !== undefined ) {
+
+					builder.AddFloatAttributeToMesh( dracoObject, dracoEncoder.TEX_COORD, uvs.count, uvs.itemSize, uvs.array );
+
+				}
+
+			}
+
+			if ( options.exportColor === true ) {
+
+				const colors = geometry.getAttribute( 'color' );
+
+				if ( colors !== undefined ) {
+
+					const array = createVertexColorSRGBArray( colors );
+
+					builder.AddFloatAttributeToMesh( dracoObject, dracoEncoder.COLOR, colors.count, colors.itemSize, array );
+
+				}
+
+			}
+
+		} else if ( object.isPoints === true ) {
+
+			builder = new dracoEncoder.PointCloudBuilder();
+			dracoObject = new dracoEncoder.PointCloud();
+
+			const vertices = geometry.getAttribute( 'position' );
+			builder.AddFloatAttribute( dracoObject, dracoEncoder.POSITION, vertices.count, vertices.itemSize, vertices.array );
+
+			if ( options.exportColor === true ) {
+
+				const colors = geometry.getAttribute( 'color' );
+
+				if ( colors !== undefined ) {
+
+					const array = createVertexColorSRGBArray( colors );
+
+					builder.AddFloatAttribute( dracoObject, dracoEncoder.COLOR, colors.count, colors.itemSize, array );
+
+				}
+
+			}
+
+		} else {
+
+			throw new Error( 'DRACOExporter: Unsupported object type.' );
+
+		}
+
+		//Compress using draco encoder
+
+		const encodedData = new dracoEncoder.DracoInt8Array();
+
+		//Sets the desired encoding and decoding speed for the given options from 0 (slowest speed, but the best compression) to 10 (fastest, but the worst compression).
+
+		const encodeSpeed = ( options.encodeSpeed !== undefined ) ? options.encodeSpeed : 5;
+		const decodeSpeed = ( options.decodeSpeed !== undefined ) ? options.decodeSpeed : 5;
+
+		encoder.SetSpeedOptions( encodeSpeed, decodeSpeed );
+
+		// Sets the desired encoding method for a given geometry.
+
+		if ( options.encoderMethod !== undefined ) {
+
+			encoder.SetEncodingMethod( options.encoderMethod );
+
+		}
+
+		// Sets the quantization (number of bits used to represent) compression options for a named attribute.
+		// The attribute values will be quantized in a box defined by the maximum extent of the attribute values.
+		if ( options.quantization !== undefined ) {
+
+			for ( let i = 0; i < 5; i ++ ) {
+
+				if ( options.quantization[ i ] !== undefined ) {
+
+					encoder.SetAttributeQuantization( i, options.quantization[ i ] );
+
+				}
+
+			}
+
+		}
+
+		let length;
+
+		if ( object.isMesh === true ) {
+
+			length = encoder.EncodeMeshToDracoBuffer( dracoObject, encodedData );
+
+		} else {
+
+			length = encoder.EncodePointCloudToDracoBuffer( dracoObject, true, encodedData );
+
+		}
+
+		dracoEncoder.destroy( dracoObject );
+
+		if ( length === 0 ) {
+
+			throw new Error( 'THREE.DRACOExporter: Draco encoding failed.' );
+
+		}
+
+		//Copy encoded data to buffer.
+		const outputData = new Int8Array( new ArrayBuffer( length ) );
+
+		for ( let i = 0; i < length; i ++ ) {
+
+			outputData[ i ] = encodedData.GetValue( i );
+
+		}
+
+		dracoEncoder.destroy( encodedData );
+		dracoEncoder.destroy( encoder );
+		dracoEncoder.destroy( builder );
+
+		return outputData;
+
+	}
+
+}
+
+function createVertexColorSRGBArray( attribute ) {
+
+	// While .drc files do not specify colorspace, the only 'official' tooling
+	// is PLY and OBJ converters, which use sRGB. We'll assume sRGB is expected
+	// for .drc files, but note that Draco buffers embedded in glTF files will
+	// be Linear-sRGB instead.
+
+	const _color = new Color();
+
+	const count = attribute.count;
+	const itemSize = attribute.itemSize;
+	const array = new Float32Array( count * itemSize );
+
+	for ( let i = 0, il = count; i < il; i ++ ) {
+
+		_color.fromBufferAttribute( attribute, i ).convertLinearToSRGB();
+
+		array[ i * itemSize ] = _color.r;
+		array[ i * itemSize + 1 ] = _color.g;
+		array[ i * itemSize + 2 ] = _color.b;
+
+		if ( itemSize === 4 ) {
+
+			array[ i * itemSize + 3 ] = attribute.getW( i );
+
+		}
+
+	}
+
+	return array;
+
+}
+
+// Encoder methods
+
+DRACOExporter.MESH_EDGEBREAKER_ENCODING = 1;
+DRACOExporter.MESH_SEQUENTIAL_ENCODING = 0;
+
+// Geometry type
+
+DRACOExporter.POINT_CLOUD = 0;
+DRACOExporter.TRIANGULAR_MESH = 1;
+
+// Attribute type
+
+DRACOExporter.INVALID = - 1;
+DRACOExporter.POSITION = 0;
+DRACOExporter.NORMAL = 1;
+DRACOExporter.COLOR = 2;
+DRACOExporter.TEX_COORD = 3;
+DRACOExporter.GENERIC = 4;
+
+export { DRACOExporter };

dist/electron/static/sdk/three/jsm/exporters/EXRExporter.js

@@ -0,0 +1,579 @@
+/**
+ * @author sciecode / https://github.com/sciecode
+ *
+ * EXR format references:
+ * 	https://www.openexr.com/documentation/openexrfilelayout.pdf
+ */
+
+import {
+	FloatType,
+	HalfFloatType,
+	RGBAFormat,
+	DataUtils,
+} from 'three';
+import * as fflate from '../libs/fflate.module.js';
+
+const textEncoder = new TextEncoder();
+
+const NO_COMPRESSION = 0;
+const ZIPS_COMPRESSION = 2;
+const ZIP_COMPRESSION = 3;
+
+class EXRExporter {
+
+	parse( arg1, arg2, arg3 ) {
+
+		if ( ! arg1 || ! ( arg1.isWebGLRenderer || arg1.isDataTexture ) ) {
+
+			throw Error( 'EXRExporter.parse: Unsupported first parameter, expected instance of WebGLRenderer or DataTexture.' );
+
+		} else if ( arg1.isWebGLRenderer ) {
+
+			const renderer = arg1, renderTarget = arg2, options = arg3;
+
+			supportedRTT( renderTarget );
+
+			const info = buildInfoRTT( renderTarget, options ),
+				dataBuffer = getPixelData( renderer, renderTarget, info ),
+				rawContentBuffer = reorganizeDataBuffer( dataBuffer, info ),
+				chunks = compressData( rawContentBuffer, info );
+
+			return fillData( chunks, info );
+
+		} else if ( arg1.isDataTexture ) {
+
+			const texture = arg1, options = arg2;
+
+			supportedDT( texture );
+
+			const info = buildInfoDT( texture, options ),
+				dataBuffer = texture.image.data,
+				rawContentBuffer = reorganizeDataBuffer( dataBuffer, info ),
+				chunks = compressData( rawContentBuffer, info );
+
+			return fillData( chunks, info );
+
+		}
+
+	}
+
+}
+
+function supportedRTT( renderTarget ) {
+
+	if ( ! renderTarget || ! renderTarget.isWebGLRenderTarget ) {
+
+		throw Error( 'EXRExporter.parse: Unsupported second parameter, expected instance of WebGLRenderTarget.' );
+
+	}
+
+	if ( renderTarget.isWebGLCubeRenderTarget || renderTarget.isWebGL3DRenderTarget || renderTarget.isWebGLArrayRenderTarget ) {
+
+		throw Error( 'EXRExporter.parse: Unsupported render target type, expected instance of WebGLRenderTarget.' );
+
+	}
+
+	if ( renderTarget.texture.type !== FloatType && renderTarget.texture.type !== HalfFloatType ) {
+
+		throw Error( 'EXRExporter.parse: Unsupported WebGLRenderTarget texture type.' );
+
+	}
+
+	if ( renderTarget.texture.format !== RGBAFormat ) {
+
+		throw Error( 'EXRExporter.parse: Unsupported WebGLRenderTarget texture format, expected RGBAFormat.' );
+
+	}
+
+}
+
+function supportedDT( texture ) {
+
+	if ( texture.type !== FloatType && texture.type !== HalfFloatType ) {
+
+		throw Error( 'EXRExporter.parse: Unsupported DataTexture texture type.' );
+
+	}
+
+	if ( texture.format !== RGBAFormat ) {
+
+		throw Error( 'EXRExporter.parse: Unsupported DataTexture texture format, expected RGBAFormat.' );
+
+	}
+
+	if ( ! texture.image.data ) {
+
+		throw Error( 'EXRExporter.parse: Invalid DataTexture image data.' );
+
+	}
+
+	if ( texture.type === FloatType && texture.image.data.constructor.name !== 'Float32Array' ) {
+
+		throw Error( 'EXRExporter.parse: DataTexture image data doesn\'t match type, expected \'Float32Array\'.' );
+
+	}
+
+	if ( texture.type === HalfFloatType && texture.image.data.constructor.name !== 'Uint16Array' ) {
+
+		throw Error( 'EXRExporter.parse: DataTexture image data doesn\'t match type, expected \'Uint16Array\'.' );
+
+	}
+
+}
+
+function buildInfoRTT( renderTarget, options = {} ) {
+
+	const compressionSizes = {
+		0: 1,
+		2: 1,
+		3: 16
+	};
+
+	const WIDTH = renderTarget.width,
+		HEIGHT = renderTarget.height,
+		TYPE = renderTarget.texture.type,
+		FORMAT = renderTarget.texture.format,
+		COMPRESSION = ( options.compression !== undefined ) ? options.compression : ZIP_COMPRESSION,
+		EXPORTER_TYPE = ( options.type !== undefined ) ? options.type : HalfFloatType,
+		OUT_TYPE = ( EXPORTER_TYPE === FloatType ) ? 2 : 1,
+		COMPRESSION_SIZE = compressionSizes[ COMPRESSION ],
+		NUM_CHANNELS = 4;
+
+	return {
+		width: WIDTH,
+		height: HEIGHT,
+		type: TYPE,
+		format: FORMAT,
+		compression: COMPRESSION,
+		blockLines: COMPRESSION_SIZE,
+		dataType: OUT_TYPE,
+		dataSize: 2 * OUT_TYPE,
+		numBlocks: Math.ceil( HEIGHT / COMPRESSION_SIZE ),
+		numInputChannels: 4,
+		numOutputChannels: NUM_CHANNELS,
+	};
+
+}
+
+function buildInfoDT( texture, options = {} ) {
+
+	const compressionSizes = {
+		0: 1,
+		2: 1,
+		3: 16
+	};
+
+	const WIDTH = texture.image.width,
+		HEIGHT = texture.image.height,
+		TYPE = texture.type,
+		FORMAT = texture.format,
+		COMPRESSION = ( options.compression !== undefined ) ? options.compression : ZIP_COMPRESSION,
+		EXPORTER_TYPE = ( options.type !== undefined ) ? options.type : HalfFloatType,
+		OUT_TYPE = ( EXPORTER_TYPE === FloatType ) ? 2 : 1,
+		COMPRESSION_SIZE = compressionSizes[ COMPRESSION ],
+		NUM_CHANNELS = 4;
+
+	return {
+		width: WIDTH,
+		height: HEIGHT,
+		type: TYPE,
+		format: FORMAT,
+		compression: COMPRESSION,
+		blockLines: COMPRESSION_SIZE,
+		dataType: OUT_TYPE,
+		dataSize: 2 * OUT_TYPE,
+		numBlocks: Math.ceil( HEIGHT / COMPRESSION_SIZE ),
+		numInputChannels: 4,
+		numOutputChannels: NUM_CHANNELS,
+	};
+
+}
+
+function getPixelData( renderer, rtt, info ) {
+
+	let dataBuffer;
+
+	if ( info.type === FloatType ) {
+
+		dataBuffer = new Float32Array( info.width * info.height * info.numInputChannels );
+
+	} else {
+
+		dataBuffer = new Uint16Array( info.width * info.height * info.numInputChannels );
+
+	}
+
+	renderer.readRenderTargetPixels( rtt, 0, 0, info.width, info.height, dataBuffer );
+
+	return dataBuffer;
+
+}
+
+function reorganizeDataBuffer( inBuffer, info ) {
+
+	const w = info.width,
+		h = info.height,
+		dec = { r: 0, g: 0, b: 0, a: 0 },
+		offset = { value: 0 },
+		cOffset = ( info.numOutputChannels == 4 ) ? 1 : 0,
+		getValue = ( info.type == FloatType ) ? getFloat32 : getFloat16,
+		setValue = ( info.dataType == 1 ) ? setFloat16 : setFloat32,
+		outBuffer = new Uint8Array( info.width * info.height * info.numOutputChannels * info.dataSize ),
+		dv = new DataView( outBuffer.buffer );
+
+	for ( let y = 0; y < h; ++ y ) {
+
+		for ( let x = 0; x < w; ++ x ) {
+
+			const i = y * w * 4 + x * 4;
+
+			const r = getValue( inBuffer, i );
+			const g = getValue( inBuffer, i + 1 );
+			const b = getValue( inBuffer, i + 2 );
+			const a = getValue( inBuffer, i + 3 );
+
+			const line = ( h - y - 1 ) * w * ( 3 + cOffset ) * info.dataSize;
+
+			decodeLinear( dec, r, g, b, a );
+
+			offset.value = line + x * info.dataSize;
+			setValue( dv, dec.a, offset );
+
+			offset.value = line + ( cOffset ) * w * info.dataSize + x * info.dataSize;
+			setValue( dv, dec.b, offset );
+
+			offset.value = line + ( 1 + cOffset ) * w * info.dataSize + x * info.dataSize;
+			setValue( dv, dec.g, offset );
+
+			offset.value = line + ( 2 + cOffset ) * w * info.dataSize + x * info.dataSize;
+			setValue( dv, dec.r, offset );
+
+		}
+
+	}
+
+	return outBuffer;
+
+}
+
+function compressData( inBuffer, info ) {
+
+	let compress,
+		tmpBuffer,
+		sum = 0;
+
+	const chunks = { data: new Array(), totalSize: 0 },
+		size = info.width * info.numOutputChannels * info.blockLines * info.dataSize;
+
+	switch ( info.compression ) {
+
+		case 0:
+			compress = compressNONE;
+			break;
+
+		case 2:
+		case 3:
+			compress = compressZIP;
+			break;
+
+	}
+
+	if ( info.compression !== 0 ) {
+
+		tmpBuffer = new Uint8Array( size );
+
+	}
+
+	for ( let i = 0; i < info.numBlocks; ++ i ) {
+
+		const arr = inBuffer.subarray( size * i, size * ( i + 1 ) );
+
+		const block = compress( arr, tmpBuffer );
+
+		sum += block.length;
+
+		chunks.data.push( { dataChunk: block, size: block.length } );
+
+	}
+
+	chunks.totalSize = sum;
+
+	return chunks;
+
+}
+
+function compressNONE( data ) {
+
+	return data;
+
+}
+
+function compressZIP( data, tmpBuffer ) {
+
+	//
+	// Reorder the pixel data.
+	//
+
+	let t1 = 0,
+		t2 = Math.floor( ( data.length + 1 ) / 2 ),
+		s = 0;
+
+	const stop = data.length - 1;
+
+	while ( true ) {
+
+		if ( s > stop ) break;
+		tmpBuffer[ t1 ++ ] = data[ s ++ ];
+
+		if ( s > stop ) break;
+		tmpBuffer[ t2 ++ ] = data[ s ++ ];
+
+	}
+
+	//
+	// Predictor.
+	//
+
+	let p = tmpBuffer[ 0 ];
+
+	for ( let t = 1; t < tmpBuffer.length; t ++ ) {
+
+		const d = tmpBuffer[ t ] - p + ( 128 + 256 );
+		p = tmpBuffer[ t ];
+		tmpBuffer[ t ] = d;
+
+	}
+
+	const deflate = fflate.zlibSync( tmpBuffer );
+
+	return deflate;
+
+}
+
+function fillHeader( outBuffer, chunks, info ) {
+
+	const offset = { value: 0 };
+	const dv = new DataView( outBuffer.buffer );
+
+	setUint32( dv, 20000630, offset ); // magic
+	setUint32( dv, 2, offset ); // mask
+
+	// = HEADER =
+
+	setString( dv, 'compression', offset );
+	setString( dv, 'compression', offset );
+	setUint32( dv, 1, offset );
+	setUint8( dv, info.compression, offset );
+
+	setString( dv, 'screenWindowCenter', offset );
+	setString( dv, 'v2f', offset );
+	setUint32( dv, 8, offset );
+	setUint32( dv, 0, offset );
+	setUint32( dv, 0, offset );
+
+	setString( dv, 'screenWindowWidth', offset );
+	setString( dv, 'float', offset );
+	setUint32( dv, 4, offset );
+	setFloat32( dv, 1.0, offset );
+
+	setString( dv, 'pixelAspectRatio', offset );
+	setString( dv, 'float', offset );
+	setUint32( dv, 4, offset );
+	setFloat32( dv, 1.0, offset );
+
+	setString( dv, 'lineOrder', offset );
+	setString( dv, 'lineOrder', offset );
+	setUint32( dv, 1, offset );
+	setUint8( dv, 0, offset );
+
+	setString( dv, 'dataWindow', offset );
+	setString( dv, 'box2i', offset );
+	setUint32( dv, 16, offset );
+	setUint32( dv, 0, offset );
+	setUint32( dv, 0, offset );
+	setUint32( dv, info.width - 1, offset );
+	setUint32( dv, info.height - 1, offset );
+
+	setString( dv, 'displayWindow', offset );
+	setString( dv, 'box2i', offset );
+	setUint32( dv, 16, offset );
+	setUint32( dv, 0, offset );
+	setUint32( dv, 0, offset );
+	setUint32( dv, info.width - 1, offset );
+	setUint32( dv, info.height - 1, offset );
+
+	setString( dv, 'channels', offset );
+	setString( dv, 'chlist', offset );
+	setUint32( dv, info.numOutputChannels * 18 + 1, offset );
+
+	setString( dv, 'A', offset );
+	setUint32( dv, info.dataType, offset );
+	offset.value += 4;
+	setUint32( dv, 1, offset );
+	setUint32( dv, 1, offset );
+
+	setString( dv, 'B', offset );
+	setUint32( dv, info.dataType, offset );
+	offset.value += 4;
+	setUint32( dv, 1, offset );
+	setUint32( dv, 1, offset );
+
+	setString( dv, 'G', offset );
+	setUint32( dv, info.dataType, offset );
+	offset.value += 4;
+	setUint32( dv, 1, offset );
+	setUint32( dv, 1, offset );
+
+	setString( dv, 'R', offset );
+	setUint32( dv, info.dataType, offset );
+	offset.value += 4;
+	setUint32( dv, 1, offset );
+	setUint32( dv, 1, offset );
+
+	setUint8( dv, 0, offset );
+
+	// null-byte
+	setUint8( dv, 0, offset );
+
+	// = OFFSET TABLE =
+
+	let sum = offset.value + info.numBlocks * 8;
+
+	for ( let i = 0; i < chunks.data.length; ++ i ) {
+
+		setUint64( dv, sum, offset );
+
+		sum += chunks.data[ i ].size + 8;
+
+	}
+
+}
+
+function fillData( chunks, info ) {
+
+	const TableSize = info.numBlocks * 8,
+		HeaderSize = 259 + ( 18 * info.numOutputChannels ), // 259 + 18 * chlist
+		offset = { value: HeaderSize + TableSize },
+		outBuffer = new Uint8Array( HeaderSize + TableSize + chunks.totalSize + info.numBlocks * 8 ),
+		dv = new DataView( outBuffer.buffer );
+
+	fillHeader( outBuffer, chunks, info );
+
+	for ( let i = 0; i < chunks.data.length; ++ i ) {
+
+		const data = chunks.data[ i ].dataChunk;
+		const size = chunks.data[ i ].size;
+
+		setUint32( dv, i * info.blockLines, offset );
+		setUint32( dv, size, offset );
+
+		outBuffer.set( data, offset.value );
+		offset.value += size;
+
+	}
+
+	return outBuffer;
+
+}
+
+function decodeLinear( dec, r, g, b, a ) {
+
+	dec.r = r;
+	dec.g = g;
+	dec.b = b;
+	dec.a = a;
+
+}
+
+// function decodeSRGB( dec, r, g, b, a ) {
+
+// 	dec.r = r > 0.04045 ? Math.pow( r * 0.9478672986 + 0.0521327014, 2.4 ) : r * 0.0773993808;
+// 	dec.g = g > 0.04045 ? Math.pow( g * 0.9478672986 + 0.0521327014, 2.4 ) : g * 0.0773993808;
+// 	dec.b = b > 0.04045 ? Math.pow( b * 0.9478672986 + 0.0521327014, 2.4 ) : b * 0.0773993808;
+// 	dec.a = a;
+
+// }
+
+
+function setUint8( dv, value, offset ) {
+
+	dv.setUint8( offset.value, value );
+
+	offset.value += 1;
+
+}
+
+function setUint32( dv, value, offset ) {
+
+	dv.setUint32( offset.value, value, true );
+
+	offset.value += 4;
+
+}
+
+function setFloat16( dv, value, offset ) {
+
+	dv.setUint16( offset.value, DataUtils.toHalfFloat( value ), true );
+
+	offset.value += 2;
+
+}
+
+function setFloat32( dv, value, offset ) {
+
+	dv.setFloat32( offset.value, value, true );
+
+	offset.value += 4;
+
+}
+
+function setUint64( dv, value, offset ) {
+
+	dv.setBigUint64( offset.value, BigInt( value ), true );
+
+	offset.value += 8;
+
+}
+
+function setString( dv, string, offset ) {
+
+	const tmp = textEncoder.encode( string + '\0' );
+
+	for ( let i = 0; i < tmp.length; ++ i ) {
+
+		setUint8( dv, tmp[ i ], offset );
+
+	}
+
+}
+
+function decodeFloat16( binary ) {
+
+	const exponent = ( binary & 0x7C00 ) >> 10,
+		fraction = binary & 0x03FF;
+
+	return ( binary >> 15 ? - 1 : 1 ) * (
+		exponent ?
+			(
+				exponent === 0x1F ?
+					fraction ? NaN : Infinity :
+					Math.pow( 2, exponent - 15 ) * ( 1 + fraction / 0x400 )
+			) :
+			6.103515625e-5 * ( fraction / 0x400 )
+	);
+
+}
+
+function getFloat16( arr, i ) {
+
+	return decodeFloat16( arr[ i ] );
+
+}
+
+function getFloat32( arr, i ) {
+
+	return arr[ i ];
+
+}
+
+export { EXRExporter, NO_COMPRESSION, ZIP_COMPRESSION, ZIPS_COMPRESSION };

dist/electron/static/sdk/three/jsm/exporters/KTX2Exporter.js

@@ -0,0 +1,292 @@
+import {
+	FloatType,
+	HalfFloatType,
+	UnsignedByteType,
+	RGBAFormat,
+	RGFormat,
+	RGIntegerFormat,
+	RedFormat,
+	RedIntegerFormat,
+	NoColorSpace,
+	LinearSRGBColorSpace,
+	SRGBColorSpace,
+	DataTexture,
+	REVISION,
+} from 'three';
+
+import {
+	write,
+	KTX2Container,
+	KHR_DF_CHANNEL_RGBSDA_ALPHA,
+	KHR_DF_CHANNEL_RGBSDA_BLUE,
+	KHR_DF_CHANNEL_RGBSDA_GREEN,
+	KHR_DF_CHANNEL_RGBSDA_RED,
+	KHR_DF_MODEL_RGBSDA,
+	KHR_DF_PRIMARIES_BT709,
+	KHR_DF_PRIMARIES_UNSPECIFIED,
+	KHR_DF_SAMPLE_DATATYPE_FLOAT,
+	KHR_DF_SAMPLE_DATATYPE_LINEAR,
+	KHR_DF_SAMPLE_DATATYPE_SIGNED,
+	KHR_DF_TRANSFER_LINEAR,
+	KHR_DF_TRANSFER_SRGB,
+	VK_FORMAT_R16_SFLOAT,
+	VK_FORMAT_R16G16_SFLOAT,
+	VK_FORMAT_R16G16B16A16_SFLOAT,
+	VK_FORMAT_R32_SFLOAT,
+	VK_FORMAT_R32G32_SFLOAT,
+	VK_FORMAT_R32G32B32A32_SFLOAT,
+	VK_FORMAT_R8_SRGB,
+	VK_FORMAT_R8_UNORM,
+	VK_FORMAT_R8G8_SRGB,
+	VK_FORMAT_R8G8_UNORM,
+	VK_FORMAT_R8G8B8A8_SRGB,
+	VK_FORMAT_R8G8B8A8_UNORM,
+} from '../libs/ktx-parse.module.js';
+
+const VK_FORMAT_MAP = {
+
+	[ RGBAFormat ]: {
+		[ FloatType ]: {
+			[ NoColorSpace ]: VK_FORMAT_R32G32B32A32_SFLOAT,
+			[ LinearSRGBColorSpace ]: VK_FORMAT_R32G32B32A32_SFLOAT,
+		},
+		[ HalfFloatType ]: {
+			[ NoColorSpace ]: VK_FORMAT_R16G16B16A16_SFLOAT,
+			[ LinearSRGBColorSpace ]: VK_FORMAT_R16G16B16A16_SFLOAT,
+		},
+		[ UnsignedByteType ]: {
+			[ NoColorSpace ]: VK_FORMAT_R8G8B8A8_UNORM,
+			[ LinearSRGBColorSpace ]: VK_FORMAT_R8G8B8A8_UNORM,
+			[ SRGBColorSpace ]: VK_FORMAT_R8G8B8A8_SRGB,
+		},
+	},
+
+	[ RGFormat ]: {
+		[ FloatType ]: {
+			[ NoColorSpace ]: VK_FORMAT_R32G32_SFLOAT,
+			[ LinearSRGBColorSpace ]: VK_FORMAT_R32G32_SFLOAT,
+		},
+		[ HalfFloatType ]: {
+			[ NoColorSpace ]: VK_FORMAT_R16G16_SFLOAT,
+			[ LinearSRGBColorSpace ]: VK_FORMAT_R16G16_SFLOAT,
+		},
+		[ UnsignedByteType ]: {
+			[ NoColorSpace ]: VK_FORMAT_R8G8_UNORM,
+			[ LinearSRGBColorSpace ]: VK_FORMAT_R8G8_UNORM,
+			[ SRGBColorSpace ]: VK_FORMAT_R8G8_SRGB,
+		},
+	},
+
+	[ RedFormat ]: {
+		[ FloatType ]: {
+			[ NoColorSpace ]: VK_FORMAT_R32_SFLOAT,
+			[ LinearSRGBColorSpace ]: VK_FORMAT_R32_SFLOAT,
+		},
+		[ HalfFloatType ]: {
+			[ NoColorSpace ]: VK_FORMAT_R16_SFLOAT,
+			[ LinearSRGBColorSpace ]: VK_FORMAT_R16_SFLOAT,
+		},
+		[ UnsignedByteType ]: {
+			[ NoColorSpace ]: VK_FORMAT_R8_UNORM,
+			[ LinearSRGBColorSpace ]: VK_FORMAT_R8_UNORM,
+			[ SRGBColorSpace ]: VK_FORMAT_R8_SRGB,
+		},
+	},
+
+};
+
+const KHR_DF_CHANNEL_MAP = {
+
+	0: KHR_DF_CHANNEL_RGBSDA_RED,
+	1: KHR_DF_CHANNEL_RGBSDA_GREEN,
+	2: KHR_DF_CHANNEL_RGBSDA_BLUE,
+	3: KHR_DF_CHANNEL_RGBSDA_ALPHA,
+
+};
+
+const ERROR_INPUT = 'THREE.KTX2Exporter: Supported inputs are DataTexture, Data3DTexture, or WebGLRenderer and WebGLRenderTarget.';
+const ERROR_FORMAT = 'THREE.KTX2Exporter: Supported formats are RGBAFormat, RGFormat, or RedFormat.';
+const ERROR_TYPE = 'THREE.KTX2Exporter: Supported types are FloatType, HalfFloatType, or UnsignedByteType."';
+const ERROR_COLOR_SPACE = 'THREE.KTX2Exporter: Supported color spaces are SRGBColorSpace (UnsignedByteType only), LinearSRGBColorSpace, or NoColorSpace.';
+
+export class KTX2Exporter {
+
+	parse( arg1, arg2 ) {
+
+		let texture;
+
+		if ( arg1.isDataTexture || arg1.isData3DTexture ) {
+
+			texture = arg1;
+
+		} else if ( arg1.isWebGLRenderer && arg2.isWebGLRenderTarget ) {
+
+			texture = toDataTexture( arg1, arg2 );
+
+		} else {
+
+			throw new Error( ERROR_INPUT );
+
+		}
+
+		if ( VK_FORMAT_MAP[ texture.format ] === undefined ) {
+
+			throw new Error( ERROR_FORMAT );
+
+		}
+
+		if ( VK_FORMAT_MAP[ texture.format ][ texture.type ] === undefined ) {
+
+			throw new Error( ERROR_TYPE );
+
+		}
+
+		if ( VK_FORMAT_MAP[ texture.format ][ texture.type ][ texture.colorSpace ] === undefined ) {
+
+			throw new Error( ERROR_COLOR_SPACE );
+
+		}
+
+		//
+
+		const array = texture.image.data;
+		const channelCount = getChannelCount( texture );
+		const container = new KTX2Container();
+
+		container.vkFormat = VK_FORMAT_MAP[ texture.format ][ texture.type ][ texture.colorSpace ];
+		container.typeSize = array.BYTES_PER_ELEMENT;
+		container.pixelWidth = texture.image.width;
+		container.pixelHeight = texture.image.height;
+
+		if ( texture.isData3DTexture ) {
+
+			container.pixelDepth = texture.image.depth;
+
+		}
+
+		//
+
+		const basicDesc = container.dataFormatDescriptor[ 0 ];
+
+		basicDesc.colorModel = KHR_DF_MODEL_RGBSDA;
+		basicDesc.colorPrimaries = texture.colorSpace === NoColorSpace
+			? KHR_DF_PRIMARIES_UNSPECIFIED
+			: KHR_DF_PRIMARIES_BT709;
+		basicDesc.transferFunction = texture.colorSpace === SRGBColorSpace
+			? KHR_DF_TRANSFER_SRGB
+			: KHR_DF_TRANSFER_LINEAR;
+
+		basicDesc.texelBlockDimension = [ 0, 0, 0, 0 ];
+
+		basicDesc.bytesPlane = [
+
+			container.typeSize * channelCount, 0, 0, 0, 0, 0, 0, 0,
+
+		];
+
+		for ( let i = 0; i < channelCount; ++ i ) {
+
+			let channelType = KHR_DF_CHANNEL_MAP[ i ];
+
+			if ( texture.colorSpace === LinearSRGBColorSpace || texture.colorSpace === NoColorSpace ) {
+
+				channelType |= KHR_DF_SAMPLE_DATATYPE_LINEAR;
+
+			}
+
+			if ( texture.type === FloatType || texture.type === HalfFloatType ) {
+
+				channelType |= KHR_DF_SAMPLE_DATATYPE_FLOAT;
+				channelType |= KHR_DF_SAMPLE_DATATYPE_SIGNED;
+
+			}
+
+			basicDesc.samples.push( {
+
+				channelType: channelType,
+				bitOffset: i * array.BYTES_PER_ELEMENT,
+				bitLength: array.BYTES_PER_ELEMENT * 8 - 1,
+				samplePosition: [ 0, 0, 0, 0 ],
+				sampleLower: texture.type === UnsignedByteType ? 0 : - 1,
+				sampleUpper: texture.type === UnsignedByteType ? 255 : 1,
+
+			} );
+
+		}
+
+		//
+
+		container.levels = [ {
+
+			levelData: new Uint8Array( array.buffer, array.byteOffset, array.byteLength ),
+			uncompressedByteLength: array.byteLength,
+
+		} ];
+
+		//
+
+		container.keyValue[ 'KTXwriter' ] = `three.js ${ REVISION }`;
+
+		//
+
+		return write( container, { keepWriter: true } );
+
+	}
+
+}
+
+function toDataTexture( renderer, rtt ) {
+
+	const channelCount = getChannelCount( rtt.texture );
+
+	let view;
+
+	if ( rtt.texture.type === FloatType ) {
+
+		view = new Float32Array( rtt.width * rtt.height * channelCount );
+
+	} else if ( rtt.texture.type === HalfFloatType ) {
+
+		view = new Uint16Array( rtt.width * rtt.height * channelCount );
+
+	} else if ( rtt.texture.type === UnsignedByteType ) {
+
+		view = new Uint8Array( rtt.width * rtt.height * channelCount );
+
+	} else {
+
+		throw new Error( ERROR_TYPE );
+
+	}
+
+	renderer.readRenderTargetPixels( rtt, 0, 0, rtt.width, rtt.height, view );
+
+	return new DataTexture( view, rtt.width, rtt.height, rtt.texture.format, rtt.texture.type );
+
+}
+
+function getChannelCount( texture ) {
+
+	switch ( texture.format ) {
+
+		case RGBAFormat:
+
+			return 4;
+
+		case RGFormat:
+		case RGIntegerFormat:
+
+			return 2;
+
+		case RedFormat:
+		case RedIntegerFormat:
+
+			return 1;
+
+		default:
+
+			throw new Error( ERROR_FORMAT );
+
+	}
+
+}

dist/electron/static/sdk/three/jsm/exporters/MMDExporter.js

@@ -0,0 +1,217 @@
+import {
+	Matrix4,
+	Quaternion,
+	Vector3
+} from 'three';
+import { MMDParser } from '../libs/mmdparser.module.js';
+
+/**
+ * Dependencies
+ *  - mmd-parser https://github.com/takahirox/mmd-parser
+ */
+
+class MMDExporter {
+
+	/* TODO: implement
+	// mesh -> pmd
+	this.parsePmd = function ( object ) {
+
+	};
+	*/
+
+	/* TODO: implement
+	// mesh -> pmx
+	this.parsePmx = function ( object ) {
+
+	};
+	*/
+
+	/* TODO: implement
+	// animation + skeleton -> vmd
+	this.parseVmd = function ( object ) {
+
+	};
+	*/
+
+	/*
+	 * skeleton -> vpd
+	 * Returns Shift_JIS encoded Uint8Array. Otherwise return strings.
+	 */
+	parseVpd( skin, outputShiftJis, useOriginalBones ) {
+
+		if ( skin.isSkinnedMesh !== true ) {
+
+			console.warn( 'THREE.MMDExporter: parseVpd() requires SkinnedMesh instance.' );
+			return null;
+
+		}
+
+		function toStringsFromNumber( num ) {
+
+			if ( Math.abs( num ) < 1e-6 ) num = 0;
+
+			let a = num.toString();
+
+			if ( a.indexOf( '.' ) === - 1 ) {
+
+				a += '.';
+
+			}
+
+			a += '000000';
+
+			const index = a.indexOf( '.' );
+
+			const d = a.slice( 0, index );
+			const p = a.slice( index + 1, index + 7 );
+
+			return d + '.' + p;
+
+		}
+
+		function toStringsFromArray( array ) {
+
+			const a = [];
+
+			for ( let i = 0, il = array.length; i < il; i ++ ) {
+
+				a.push( toStringsFromNumber( array[ i ] ) );
+
+			}
+
+			return a.join( ',' );
+
+		}
+
+		skin.updateMatrixWorld( true );
+
+		const bones = skin.skeleton.bones;
+		const bones2 = getBindBones( skin );
+
+		const position = new Vector3();
+		const quaternion = new Quaternion();
+		const quaternion2 = new Quaternion();
+		const matrix = new Matrix4();
+
+		const array = [];
+		array.push( 'Vocaloid Pose Data file' );
+		array.push( '' );
+		array.push( ( skin.name !== '' ? skin.name.replace( /\s/g, '_' ) : 'skin' ) + '.osm;' );
+		array.push( bones.length + ';' );
+		array.push( '' );
+
+		for ( let i = 0, il = bones.length; i < il; i ++ ) {
+
+			const bone = bones[ i ];
+			const bone2 = bones2[ i ];
+
+			/*
+			 * use the bone matrix saved before solving IK.
+			 * see CCDIKSolver for the detail.
+			 */
+			if ( useOriginalBones === true &&
+				bone.userData.ik !== undefined &&
+				bone.userData.ik.originalMatrix !== undefined ) {
+
+				matrix.fromArray( bone.userData.ik.originalMatrix );
+
+			} else {
+
+				matrix.copy( bone.matrix );
+
+			}
+
+			position.setFromMatrixPosition( matrix );
+			quaternion.setFromRotationMatrix( matrix );
+
+			const pArray = position.sub( bone2.position ).toArray();
+			const qArray = quaternion2.copy( bone2.quaternion ).conjugate().multiply( quaternion ).toArray();
+
+			// right to left
+			pArray[ 2 ] = - pArray[ 2 ];
+			qArray[ 0 ] = - qArray[ 0 ];
+			qArray[ 1 ] = - qArray[ 1 ];
+
+			array.push( 'Bone' + i + '{' + bone.name );
+			array.push( '  ' + toStringsFromArray( pArray ) + ';' );
+			array.push( '  ' + toStringsFromArray( qArray ) + ';' );
+			array.push( '}' );
+			array.push( '' );
+
+		}
+
+		array.push( '' );
+
+		const lines = array.join( '\n' );
+
+		return ( outputShiftJis === true ) ? unicodeToShiftjis( lines ) : lines;
+
+	}
+
+}
+
+// Unicode to Shift_JIS table
+let u2sTable;
+
+function unicodeToShiftjis( str ) {
+
+	if ( u2sTable === undefined ) {
+
+		const encoder = new MMDParser.CharsetEncoder();
+		const table = encoder.s2uTable;
+		u2sTable = {};
+
+		const keys = Object.keys( table );
+
+		for ( let i = 0, il = keys.length; i < il; i ++ ) {
+
+			let key = keys[ i ];
+
+			const value = table[ key ];
+			key = parseInt( key );
+
+			u2sTable[ value ] = key;
+
+		}
+
+	}
+
+	const array = [];
+
+	for ( let i = 0, il = str.length; i < il; i ++ ) {
+
+		const code = str.charCodeAt( i );
+
+		const value = u2sTable[ code ];
+
+		if ( value === undefined ) {
+
+			throw new Error( 'cannot convert charcode 0x' + code.toString( 16 ) );
+
+		} else if ( value > 0xff ) {
+
+			array.push( ( value >> 8 ) & 0xff );
+			array.push( value & 0xff );
+
+		} else {
+
+			array.push( value & 0xff );
+
+		}
+
+	}
+
+	return new Uint8Array( array );
+
+}
+
+function getBindBones( skin ) {
+
+	// any more efficient ways?
+	const poseSkin = skin.clone();
+	poseSkin.pose();
+	return poseSkin.skeleton.bones;
+
+}
+
+export { MMDExporter };

dist/electron/static/sdk/three/jsm/exporters/OBJExporter.js

@@ -0,0 +1,284 @@
+import {
+	Color,
+	Matrix3,
+	Vector2,
+	Vector3
+} from 'three';
+
+class OBJExporter {
+
+	parse( object ) {
+
+		let output = '';
+
+		let indexVertex = 0;
+		let indexVertexUvs = 0;
+		let indexNormals = 0;
+
+		const vertex = new Vector3();
+		const color = new Color();
+		const normal = new Vector3();
+		const uv = new Vector2();
+
+		const face = [];
+
+		function parseMesh( mesh ) {
+
+			let nbVertex = 0;
+			let nbNormals = 0;
+			let nbVertexUvs = 0;
+
+			const geometry = mesh.geometry;
+
+			const normalMatrixWorld = new Matrix3();
+
+			// shortcuts
+			const vertices = geometry.getAttribute( 'position' );
+			const normals = geometry.getAttribute( 'normal' );
+			const uvs = geometry.getAttribute( 'uv' );
+			const indices = geometry.getIndex();
+
+			// name of the mesh object
+			output += 'o ' + mesh.name + '\n';
+
+			// name of the mesh material
+			if ( mesh.material && mesh.material.name ) {
+
+				output += 'usemtl ' + mesh.material.name + '\n';
+
+			}
+
+			// vertices
+
+			if ( vertices !== undefined ) {
+
+				for ( let i = 0, l = vertices.count; i < l; i ++, nbVertex ++ ) {
+
+					vertex.fromBufferAttribute( vertices, i );
+
+					// transform the vertex to world space
+					vertex.applyMatrix4( mesh.matrixWorld );
+
+					// transform the vertex to export format
+					output += 'v ' + vertex.x + ' ' + vertex.y + ' ' + vertex.z + '\n';
+
+				}
+
+			}
+
+			// uvs
+
+			if ( uvs !== undefined ) {
+
+				for ( let i = 0, l = uvs.count; i < l; i ++, nbVertexUvs ++ ) {
+
+					uv.fromBufferAttribute( uvs, i );
+
+					// transform the uv to export format
+					output += 'vt ' + uv.x + ' ' + uv.y + '\n';
+
+				}
+
+			}
+
+			// normals
+
+			if ( normals !== undefined ) {
+
+				normalMatrixWorld.getNormalMatrix( mesh.matrixWorld );
+
+				for ( let i = 0, l = normals.count; i < l; i ++, nbNormals ++ ) {
+
+					normal.fromBufferAttribute( normals, i );
+
+					// transform the normal to world space
+					normal.applyMatrix3( normalMatrixWorld ).normalize();
+
+					// transform the normal to export format
+					output += 'vn ' + normal.x + ' ' + normal.y + ' ' + normal.z + '\n';
+
+				}
+
+			}
+
+			// faces
+
+			if ( indices !== null ) {
+
+				for ( let i = 0, l = indices.count; i < l; i += 3 ) {
+
+					for ( let m = 0; m < 3; m ++ ) {
+
+						const j = indices.getX( i + m ) + 1;
+
+						face[ m ] = ( indexVertex + j ) + ( normals || uvs ? '/' + ( uvs ? ( indexVertexUvs + j ) : '' ) + ( normals ? '/' + ( indexNormals + j ) : '' ) : '' );
+
+					}
+
+					// transform the face to export format
+					output += 'f ' + face.join( ' ' ) + '\n';
+
+				}
+
+			} else {
+
+				for ( let i = 0, l = vertices.count; i < l; i += 3 ) {
+
+					for ( let m = 0; m < 3; m ++ ) {
+
+						const j = i + m + 1;
+
+						face[ m ] = ( indexVertex + j ) + ( normals || uvs ? '/' + ( uvs ? ( indexVertexUvs + j ) : '' ) + ( normals ? '/' + ( indexNormals + j ) : '' ) : '' );
+
+					}
+
+					// transform the face to export format
+					output += 'f ' + face.join( ' ' ) + '\n';
+
+				}
+
+			}
+
+			// update index
+			indexVertex += nbVertex;
+			indexVertexUvs += nbVertexUvs;
+			indexNormals += nbNormals;
+
+		}
+
+		function parseLine( line ) {
+
+			let nbVertex = 0;
+
+			const geometry = line.geometry;
+			const type = line.type;
+
+			// shortcuts
+			const vertices = geometry.getAttribute( 'position' );
+
+			// name of the line object
+			output += 'o ' + line.name + '\n';
+
+			if ( vertices !== undefined ) {
+
+				for ( let i = 0, l = vertices.count; i < l; i ++, nbVertex ++ ) {
+
+					vertex.fromBufferAttribute( vertices, i );
+
+					// transform the vertex to world space
+					vertex.applyMatrix4( line.matrixWorld );
+
+					// transform the vertex to export format
+					output += 'v ' + vertex.x + ' ' + vertex.y + ' ' + vertex.z + '\n';
+
+				}
+
+			}
+
+			if ( type === 'Line' ) {
+
+				output += 'l ';
+
+				for ( let j = 1, l = vertices.count; j <= l; j ++ ) {
+
+					output += ( indexVertex + j ) + ' ';
+
+				}
+
+				output += '\n';
+
+			}
+
+			if ( type === 'LineSegments' ) {
+
+				for ( let j = 1, k = j + 1, l = vertices.count; j < l; j += 2, k = j + 1 ) {
+
+					output += 'l ' + ( indexVertex + j ) + ' ' + ( indexVertex + k ) + '\n';
+
+				}
+
+			}
+
+			// update index
+			indexVertex += nbVertex;
+
+		}
+
+		function parsePoints( points ) {
+
+			let nbVertex = 0;
+
+			const geometry = points.geometry;
+
+			const vertices = geometry.getAttribute( 'position' );
+			const colors = geometry.getAttribute( 'color' );
+
+			output += 'o ' + points.name + '\n';
+
+			if ( vertices !== undefined ) {
+
+				for ( let i = 0, l = vertices.count; i < l; i ++, nbVertex ++ ) {
+
+					vertex.fromBufferAttribute( vertices, i );
+					vertex.applyMatrix4( points.matrixWorld );
+
+					output += 'v ' + vertex.x + ' ' + vertex.y + ' ' + vertex.z;
+
+					if ( colors !== undefined ) {
+
+						color.fromBufferAttribute( colors, i ).convertLinearToSRGB();
+
+						output += ' ' + color.r + ' ' + color.g + ' ' + color.b;
+
+					}
+
+					output += '\n';
+
+				}
+
+				output += 'p ';
+
+				for ( let j = 1, l = vertices.count; j <= l; j ++ ) {
+
+					output += ( indexVertex + j ) + ' ';
+
+				}
+
+				output += '\n';
+
+			}
+
+			// update index
+			indexVertex += nbVertex;
+
+		}
+
+		object.traverse( function ( child ) {
+
+			if ( child.isMesh === true ) {
+
+				parseMesh( child );
+
+			}
+
+			if ( child.isLine === true ) {
+
+				parseLine( child );
+
+			}
+
+			if ( child.isPoints === true ) {
+
+				parsePoints( child );
+
+			}
+
+		} );
+
+		return output;
+
+	}
+
+}
+
+export { OBJExporter };

dist/electron/static/sdk/three/jsm/exporters/PLYExporter.js

@@ -0,0 +1,528 @@
+import {
+	Matrix3,
+	Vector3,
+	Color
+} from 'three';
+
+/**
+ * https://github.com/gkjohnson/ply-exporter-js
+ *
+ * Usage:
+ *  const exporter = new PLYExporter();
+ *
+ *  // second argument is a list of options
+ *  exporter.parse(mesh, data => console.log(data), { binary: true, excludeAttributes: [ 'color' ], littleEndian: true });
+ *
+ * Format Definition:
+ * http://paulbourke.net/dataformats/ply/
+ */
+
+class PLYExporter {
+
+	parse( object, onDone, options = {} ) {
+
+		// Iterate over the valid meshes in the object
+		function traverseMeshes( cb ) {
+
+			object.traverse( function ( child ) {
+
+				if ( child.isMesh === true || child.isPoints ) {
+
+					const mesh = child;
+					const geometry = mesh.geometry;
+
+					if ( geometry.hasAttribute( 'position' ) === true ) {
+
+						cb( mesh, geometry );
+
+					}
+
+				}
+
+			} );
+
+		}
+
+		// Default options
+		const defaultOptions = {
+			binary: false,
+			excludeAttributes: [], // normal, uv, color, index
+			littleEndian: false
+		};
+
+		options = Object.assign( defaultOptions, options );
+
+		const excludeAttributes = options.excludeAttributes;
+		let includeIndices = true;
+		let includeNormals = false;
+		let includeColors = false;
+		let includeUVs = false;
+
+		// count the vertices, check which properties are used,
+		// and cache the BufferGeometry
+		let vertexCount = 0;
+		let faceCount = 0;
+
+		object.traverse( function ( child ) {
+
+			if ( child.isMesh === true ) {
+
+				const mesh = child;
+				const geometry = mesh.geometry;
+
+				const vertices = geometry.getAttribute( 'position' );
+				const normals = geometry.getAttribute( 'normal' );
+				const uvs = geometry.getAttribute( 'uv' );
+				const colors = geometry.getAttribute( 'color' );
+				const indices = geometry.getIndex();
+
+				if ( vertices === undefined ) {
+
+					return;
+
+				}
+
+				vertexCount += vertices.count;
+				faceCount += indices ? indices.count / 3 : vertices.count / 3;
+
+				if ( normals !== undefined ) includeNormals = true;
+
+				if ( uvs !== undefined ) includeUVs = true;
+
+				if ( colors !== undefined ) includeColors = true;
+
+			} else if ( child.isPoints ) {
+
+				const mesh = child;
+				const geometry = mesh.geometry;
+
+				const vertices = geometry.getAttribute( 'position' );
+				const normals = geometry.getAttribute( 'normal' );
+				const colors = geometry.getAttribute( 'color' );
+
+				vertexCount += vertices.count;
+
+				if ( normals !== undefined ) includeNormals = true;
+
+				if ( colors !== undefined ) includeColors = true;
+
+				includeIndices = false;
+
+			}
+
+		} );
+
+		const tempColor = new Color();
+		includeIndices = includeIndices && excludeAttributes.indexOf( 'index' ) === - 1;
+		includeNormals = includeNormals && excludeAttributes.indexOf( 'normal' ) === - 1;
+		includeColors = includeColors && excludeAttributes.indexOf( 'color' ) === - 1;
+		includeUVs = includeUVs && excludeAttributes.indexOf( 'uv' ) === - 1;
+
+
+		if ( includeIndices && faceCount !== Math.floor( faceCount ) ) {
+
+			// point cloud meshes will not have an index array and may not have a
+			// number of vertices that is divisble by 3 (and therefore representable
+			// as triangles)
+			console.error(
+
+				'PLYExporter: Failed to generate a valid PLY file with triangle indices because the ' +
+				'number of indices is not divisible by 3.'
+
+			);
+
+			return null;
+
+		}
+
+		const indexByteCount = 4;
+
+		let header =
+			'ply\n' +
+			`format ${ options.binary ? ( options.littleEndian ? 'binary_little_endian' : 'binary_big_endian' ) : 'ascii' } 1.0\n` +
+			`element vertex ${vertexCount}\n` +
+
+			// position
+			'property float x\n' +
+			'property float y\n' +
+			'property float z\n';
+
+		if ( includeNormals === true ) {
+
+			// normal
+			header +=
+				'property float nx\n' +
+				'property float ny\n' +
+				'property float nz\n';
+
+		}
+
+		if ( includeUVs === true ) {
+
+			// uvs
+			header +=
+				'property float s\n' +
+				'property float t\n';
+
+		}
+
+		if ( includeColors === true ) {
+
+			// colors
+			header +=
+				'property uchar red\n' +
+				'property uchar green\n' +
+				'property uchar blue\n';
+
+		}
+
+		if ( includeIndices === true ) {
+
+			// faces
+			header +=
+				`element face ${faceCount}\n` +
+				'property list uchar int vertex_index\n';
+
+		}
+
+		header += 'end_header\n';
+
+
+		// Generate attribute data
+		const vertex = new Vector3();
+		const normalMatrixWorld = new Matrix3();
+		let result = null;
+
+		if ( options.binary === true ) {
+
+			// Binary File Generation
+			const headerBin = new TextEncoder().encode( header );
+
+			// 3 position values at 4 bytes
+			// 3 normal values at 4 bytes
+			// 3 color channels with 1 byte
+			// 2 uv values at 4 bytes
+			const vertexListLength = vertexCount * ( 4 * 3 + ( includeNormals ? 4 * 3 : 0 ) + ( includeColors ? 3 : 0 ) + ( includeUVs ? 4 * 2 : 0 ) );
+
+			// 1 byte shape desciptor
+			// 3 vertex indices at ${indexByteCount} bytes
+			const faceListLength = includeIndices ? faceCount * ( indexByteCount * 3 + 1 ) : 0;
+			const output = new DataView( new ArrayBuffer( headerBin.length + vertexListLength + faceListLength ) );
+			new Uint8Array( output.buffer ).set( headerBin, 0 );
+
+
+			let vOffset = headerBin.length;
+			let fOffset = headerBin.length + vertexListLength;
+			let writtenVertices = 0;
+			traverseMeshes( function ( mesh, geometry ) {
+
+				const vertices = geometry.getAttribute( 'position' );
+				const normals = geometry.getAttribute( 'normal' );
+				const uvs = geometry.getAttribute( 'uv' );
+				const colors = geometry.getAttribute( 'color' );
+				const indices = geometry.getIndex();
+
+				normalMatrixWorld.getNormalMatrix( mesh.matrixWorld );
+
+				for ( let i = 0, l = vertices.count; i < l; i ++ ) {
+
+					vertex.fromBufferAttribute( vertices, i );
+
+					vertex.applyMatrix4( mesh.matrixWorld );
+
+
+					// Position information
+					output.setFloat32( vOffset, vertex.x, options.littleEndian );
+					vOffset += 4;
+
+					output.setFloat32( vOffset, vertex.y, options.littleEndian );
+					vOffset += 4;
+
+					output.setFloat32( vOffset, vertex.z, options.littleEndian );
+					vOffset += 4;
+
+					// Normal information
+					if ( includeNormals === true ) {
+
+						if ( normals != null ) {
+
+							vertex.fromBufferAttribute( normals, i );
+
+							vertex.applyMatrix3( normalMatrixWorld ).normalize();
+
+							output.setFloat32( vOffset, vertex.x, options.littleEndian );
+							vOffset += 4;
+
+							output.setFloat32( vOffset, vertex.y, options.littleEndian );
+							vOffset += 4;
+
+							output.setFloat32( vOffset, vertex.z, options.littleEndian );
+							vOffset += 4;
+
+						} else {
+
+							output.setFloat32( vOffset, 0, options.littleEndian );
+							vOffset += 4;
+
+							output.setFloat32( vOffset, 0, options.littleEndian );
+							vOffset += 4;
+
+							output.setFloat32( vOffset, 0, options.littleEndian );
+							vOffset += 4;
+
+						}
+
+					}
+
+					// UV information
+					if ( includeUVs === true ) {
+
+						if ( uvs != null ) {
+
+							output.setFloat32( vOffset, uvs.getX( i ), options.littleEndian );
+							vOffset += 4;
+
+							output.setFloat32( vOffset, uvs.getY( i ), options.littleEndian );
+							vOffset += 4;
+
+						} else {
+
+							output.setFloat32( vOffset, 0, options.littleEndian );
+							vOffset += 4;
+
+							output.setFloat32( vOffset, 0, options.littleEndian );
+							vOffset += 4;
+
+						}
+
+					}
+
+					// Color information
+					if ( includeColors === true ) {
+
+						if ( colors != null ) {
+
+							tempColor
+								.fromBufferAttribute( colors, i )
+								.convertLinearToSRGB();
+
+							output.setUint8( vOffset, Math.floor( tempColor.r * 255 ) );
+							vOffset += 1;
+
+							output.setUint8( vOffset, Math.floor( tempColor.g * 255 ) );
+							vOffset += 1;
+
+							output.setUint8( vOffset, Math.floor( tempColor.b * 255 ) );
+							vOffset += 1;
+
+						} else {
+
+							output.setUint8( vOffset, 255 );
+							vOffset += 1;
+
+							output.setUint8( vOffset, 255 );
+							vOffset += 1;
+
+							output.setUint8( vOffset, 255 );
+							vOffset += 1;
+
+						}
+
+					}
+
+				}
+
+				if ( includeIndices === true ) {
+
+					// Create the face list
+
+					if ( indices !== null ) {
+
+						for ( let i = 0, l = indices.count; i < l; i += 3 ) {
+
+							output.setUint8( fOffset, 3 );
+							fOffset += 1;
+
+							output.setUint32( fOffset, indices.getX( i + 0 ) + writtenVertices, options.littleEndian );
+							fOffset += indexByteCount;
+
+							output.setUint32( fOffset, indices.getX( i + 1 ) + writtenVertices, options.littleEndian );
+							fOffset += indexByteCount;
+
+							output.setUint32( fOffset, indices.getX( i + 2 ) + writtenVertices, options.littleEndian );
+							fOffset += indexByteCount;
+
+						}
+
+					} else {
+
+						for ( let i = 0, l = vertices.count; i < l; i += 3 ) {
+
+							output.setUint8( fOffset, 3 );
+							fOffset += 1;
+
+							output.setUint32( fOffset, writtenVertices + i, options.littleEndian );
+							fOffset += indexByteCount;
+
+							output.setUint32( fOffset, writtenVertices + i + 1, options.littleEndian );
+							fOffset += indexByteCount;
+
+							output.setUint32( fOffset, writtenVertices + i + 2, options.littleEndian );
+							fOffset += indexByteCount;
+
+						}
+
+					}
+
+				}
+
+
+				// Save the amount of verts we've already written so we can offset
+				// the face index on the next mesh
+				writtenVertices += vertices.count;
+
+			} );
+
+			result = output.buffer;
+
+		} else {
+
+			// Ascii File Generation
+			// count the number of vertices
+			let writtenVertices = 0;
+			let vertexList = '';
+			let faceList = '';
+
+			traverseMeshes( function ( mesh, geometry ) {
+
+				const vertices = geometry.getAttribute( 'position' );
+				const normals = geometry.getAttribute( 'normal' );
+				const uvs = geometry.getAttribute( 'uv' );
+				const colors = geometry.getAttribute( 'color' );
+				const indices = geometry.getIndex();
+
+				normalMatrixWorld.getNormalMatrix( mesh.matrixWorld );
+
+				// form each line
+				for ( let i = 0, l = vertices.count; i < l; i ++ ) {
+
+					vertex.fromBufferAttribute( vertices, i );
+
+					vertex.applyMatrix4( mesh.matrixWorld );
+
+
+					// Position information
+					let line =
+						vertex.x + ' ' +
+						vertex.y + ' ' +
+						vertex.z;
+
+					// Normal information
+					if ( includeNormals === true ) {
+
+						if ( normals != null ) {
+
+							vertex.fromBufferAttribute( normals, i );
+
+							vertex.applyMatrix3( normalMatrixWorld ).normalize();
+
+							line += ' ' +
+								vertex.x + ' ' +
+								vertex.y + ' ' +
+								vertex.z;
+
+						} else {
+
+							line += ' 0 0 0';
+
+						}
+
+					}
+
+					// UV information
+					if ( includeUVs === true ) {
+
+						if ( uvs != null ) {
+
+							line += ' ' +
+								uvs.getX( i ) + ' ' +
+								uvs.getY( i );
+
+						} else {
+
+							line += ' 0 0';
+
+						}
+
+					}
+
+					// Color information
+					if ( includeColors === true ) {
+
+						if ( colors != null ) {
+
+							tempColor
+								.fromBufferAttribute( colors, i )
+								.convertLinearToSRGB();
+
+							line += ' ' +
+								Math.floor( tempColor.r * 255 ) + ' ' +
+								Math.floor( tempColor.g * 255 ) + ' ' +
+								Math.floor( tempColor.b * 255 );
+
+						} else {
+
+							line += ' 255 255 255';
+
+						}
+
+					}
+
+					vertexList += line + '\n';
+
+				}
+
+				// Create the face list
+				if ( includeIndices === true ) {
+
+					if ( indices !== null ) {
+
+						for ( let i = 0, l = indices.count; i < l; i += 3 ) {
+
+							faceList += `3 ${ indices.getX( i + 0 ) + writtenVertices }`;
+							faceList += ` ${ indices.getX( i + 1 ) + writtenVertices }`;
+							faceList += ` ${ indices.getX( i + 2 ) + writtenVertices }\n`;
+
+						}
+
+					} else {
+
+						for ( let i = 0, l = vertices.count; i < l; i += 3 ) {
+
+							faceList += `3 ${ writtenVertices + i } ${ writtenVertices + i + 1 } ${ writtenVertices + i + 2 }\n`;
+
+						}
+
+					}
+
+					faceCount += indices ? indices.count / 3 : vertices.count / 3;
+
+				}
+
+				writtenVertices += vertices.count;
+
+			} );
+
+			result = `${ header }${vertexList}${ includeIndices ? `${faceList}\n` : '\n' }`;
+
+		}
+
+		if ( typeof onDone === 'function' ) requestAnimationFrame( () => onDone( result ) );
+
+		return result;
+
+	}
+
+}
+
+export { PLYExporter };

dist/electron/static/sdk/three/jsm/exporters/STLExporter.js

@@ -0,0 +1,199 @@
+import { Vector3 } from 'three';
+
+/**
+ * Usage:
+ *  const exporter = new STLExporter();
+ *
+ *  // second argument is a list of options
+ *  const data = exporter.parse( mesh, { binary: true } );
+ *
+ */
+
+class STLExporter {
+
+	parse( scene, options = {} ) {
+
+		options = Object.assign( {
+			binary: false
+		}, options );
+
+		const binary = options.binary;
+
+		//
+
+		const objects = [];
+		let triangles = 0;
+
+		scene.traverse( function ( object ) {
+
+			if ( object.isMesh ) {
+
+				const geometry = object.geometry;
+
+				const index = geometry.index;
+				const positionAttribute = geometry.getAttribute( 'position' );
+
+				triangles += ( index !== null ) ? ( index.count / 3 ) : ( positionAttribute.count / 3 );
+
+				objects.push( {
+					object3d: object,
+					geometry: geometry
+				} );
+
+			}
+
+		} );
+
+		let output;
+		let offset = 80; // skip header
+
+		if ( binary === true ) {
+
+			const bufferLength = triangles * 2 + triangles * 3 * 4 * 4 + 80 + 4;
+			const arrayBuffer = new ArrayBuffer( bufferLength );
+			output = new DataView( arrayBuffer );
+			output.setUint32( offset, triangles, true ); offset += 4;
+
+		} else {
+
+			output = '';
+			output += 'solid exported\n';
+
+		}
+
+		const vA = new Vector3();
+		const vB = new Vector3();
+		const vC = new Vector3();
+		const cb = new Vector3();
+		const ab = new Vector3();
+		const normal = new Vector3();
+
+		for ( let i = 0, il = objects.length; i < il; i ++ ) {
+
+			const object = objects[ i ].object3d;
+			const geometry = objects[ i ].geometry;
+
+			const index = geometry.index;
+			const positionAttribute = geometry.getAttribute( 'position' );
+
+			if ( index !== null ) {
+
+				// indexed geometry
+
+				for ( let j = 0; j < index.count; j += 3 ) {
+
+					const a = index.getX( j + 0 );
+					const b = index.getX( j + 1 );
+					const c = index.getX( j + 2 );
+
+					writeFace( a, b, c, positionAttribute, object );
+
+				}
+
+			} else {
+
+				// non-indexed geometry
+
+				for ( let j = 0; j < positionAttribute.count; j += 3 ) {
+
+					const a = j + 0;
+					const b = j + 1;
+					const c = j + 2;
+
+					writeFace( a, b, c, positionAttribute, object );
+
+				}
+
+			}
+
+		}
+
+		if ( binary === false ) {
+
+			output += 'endsolid exported\n';
+
+		}
+
+		return output;
+
+		function writeFace( a, b, c, positionAttribute, object ) {
+
+			vA.fromBufferAttribute( positionAttribute, a );
+			vB.fromBufferAttribute( positionAttribute, b );
+			vC.fromBufferAttribute( positionAttribute, c );
+
+			if ( object.isSkinnedMesh === true ) {
+
+				object.applyBoneTransform( a, vA );
+				object.applyBoneTransform( b, vB );
+				object.applyBoneTransform( c, vC );
+
+			}
+
+			vA.applyMatrix4( object.matrixWorld );
+			vB.applyMatrix4( object.matrixWorld );
+			vC.applyMatrix4( object.matrixWorld );
+
+			writeNormal( vA, vB, vC );
+
+			writeVertex( vA );
+			writeVertex( vB );
+			writeVertex( vC );
+
+			if ( binary === true ) {
+
+				output.setUint16( offset, 0, true ); offset += 2;
+
+			} else {
+
+				output += '\t\tendloop\n';
+				output += '\tendfacet\n';
+
+			}
+
+		}
+
+		function writeNormal( vA, vB, vC ) {
+
+			cb.subVectors( vC, vB );
+			ab.subVectors( vA, vB );
+			cb.cross( ab ).normalize();
+
+			normal.copy( cb ).normalize();
+
+			if ( binary === true ) {
+
+				output.setFloat32( offset, normal.x, true ); offset += 4;
+				output.setFloat32( offset, normal.y, true ); offset += 4;
+				output.setFloat32( offset, normal.z, true ); offset += 4;
+
+			} else {
+
+				output += '\tfacet normal ' + normal.x + ' ' + normal.y + ' ' + normal.z + '\n';
+				output += '\t\touter loop\n';
+
+			}
+
+		}
+
+		function writeVertex( vertex ) {
+
+			if ( binary === true ) {
+
+				output.setFloat32( offset, vertex.x, true ); offset += 4;
+				output.setFloat32( offset, vertex.y, true ); offset += 4;
+				output.setFloat32( offset, vertex.z, true ); offset += 4;
+
+			} else {
+
+				output += '\t\t\tvertex ' + vertex.x + ' ' + vertex.y + ' ' + vertex.z + '\n';
+
+			}
+
+		}
+
+	}
+
+}
+
+export { STLExporter };

dist/electron/static/sdk/three/jsm/exporters/USDZExporter.js

@@ -0,0 +1,741 @@
+import {
+	NoColorSpace,
+	DoubleSide,
+} from 'three';
+
+import {
+	strToU8,
+	zipSync,
+} from '../libs/fflate.module.js';
+
+import { decompress } from './../utils/TextureUtils.js';
+
+class USDZExporter {
+
+	parse( scene, onDone, onError, options ) {
+
+		this.parseAsync( scene, options ).then( onDone ).catch( onError );
+
+	}
+
+	async parseAsync( scene, options = {} ) {
+
+		options = Object.assign( {
+			ar: {
+				anchoring: { type: 'plane' },
+				planeAnchoring: { alignment: 'horizontal' }
+			},
+			quickLookCompatible: false,
+			maxTextureSize: 1024,
+		}, options );
+
+		const files = {};
+		const modelFileName = 'model.usda';
+
+		// model file should be first in USDZ archive so we init it here
+		files[ modelFileName ] = null;
+
+		let output = buildHeader();
+
+		output += buildSceneStart( options );
+
+		const materials = {};
+		const textures = {};
+
+		scene.traverseVisible( ( object ) => {
+
+			if ( object.isMesh ) {
+
+				const geometry = object.geometry;
+				const material = object.material;
+
+				if ( material.isMeshStandardMaterial ) {
+
+					const geometryFileName = 'geometries/Geometry_' + geometry.id + '.usda';
+
+					if ( ! ( geometryFileName in files ) ) {
+
+						const meshObject = buildMeshObject( geometry );
+						files[ geometryFileName ] = buildUSDFileAsString( meshObject );
+
+					}
+
+					if ( ! ( material.uuid in materials ) ) {
+
+						materials[ material.uuid ] = material;
+
+					}
+
+					output += buildXform( object, geometry, material );
+
+				} else {
+
+					console.warn( 'THREE.USDZExporter: Unsupported material type (USDZ only supports MeshStandardMaterial)', object );
+
+				}
+
+			} else if ( object.isCamera ) {
+
+				output += buildCamera( object );
+
+			}
+
+		} );
+
+
+		output += buildSceneEnd();
+
+		output += buildMaterials( materials, textures, options.quickLookCompatible );
+
+		files[ modelFileName ] = strToU8( output );
+		output = null;
+
+		for ( const id in textures ) {
+
+			let texture = textures[ id ];
+
+			if ( texture.isCompressedTexture === true ) {
+
+				texture = decompress( texture );
+
+			}
+
+			const canvas = imageToCanvas( texture.image, texture.flipY, options.maxTextureSize );
+			const blob = await new Promise( resolve => canvas.toBlob( resolve, 'image/png', 1 ) );
+
+			files[ `textures/Texture_${ id }.png` ] = new Uint8Array( await blob.arrayBuffer() );
+
+		}
+
+		// 64 byte alignment
+		// https://github.com/101arrowz/fflate/issues/39#issuecomment-777263109
+
+		let offset = 0;
+
+		for ( const filename in files ) {
+
+			const file = files[ filename ];
+			const headerSize = 34 + filename.length;
+
+			offset += headerSize;
+
+			const offsetMod64 = offset & 63;
+
+			if ( offsetMod64 !== 4 ) {
+
+				const padLength = 64 - offsetMod64;
+				const padding = new Uint8Array( padLength );
+
+				files[ filename ] = [ file, { extra: { 12345: padding } } ];
+
+			}
+
+			offset = file.length;
+
+		}
+
+		return zipSync( files, { level: 0 } );
+
+	}
+
+}
+
+function imageToCanvas( image, flipY, maxTextureSize ) {
+
+	if ( ( typeof HTMLImageElement !== 'undefined' && image instanceof HTMLImageElement ) ||
+		( typeof HTMLCanvasElement !== 'undefined' && image instanceof HTMLCanvasElement ) ||
+		( typeof OffscreenCanvas !== 'undefined' && image instanceof OffscreenCanvas ) ||
+		( typeof ImageBitmap !== 'undefined' && image instanceof ImageBitmap ) ) {
+
+		const scale = maxTextureSize / Math.max( image.width, image.height );
+
+		const canvas = document.createElement( 'canvas' );
+		canvas.width = image.width * Math.min( 1, scale );
+		canvas.height = image.height * Math.min( 1, scale );
+
+		const context = canvas.getContext( '2d' );
+
+		// TODO: We should be able to do this in the UsdTransform2d?
+
+		if ( flipY === true ) {
+
+			context.translate( 0, canvas.height );
+			context.scale( 1, - 1 );
+
+		}
+
+		context.drawImage( image, 0, 0, canvas.width, canvas.height );
+
+		return canvas;
+
+	} else {
+
+		throw new Error( 'THREE.USDZExporter: No valid image data found. Unable to process texture.' );
+
+	}
+
+}
+
+//
+
+const PRECISION = 7;
+
+function buildHeader() {
+
+	return `#usda 1.0
+(
+	customLayerData = {
+		string creator = "Three.js USDZExporter"
+	}
+	defaultPrim = "Root"
+	metersPerUnit = 1
+	upAxis = "Y"
+)
+
+`;
+
+}
+
+function buildSceneStart( options ) {
+
+	return `def Xform "Root"
+{
+	def Scope "Scenes" (
+		kind = "sceneLibrary"
+	)
+	{
+		def Xform "Scene" (
+			customData = {
+				bool preliminary_collidesWithEnvironment = 0
+				string sceneName = "Scene"
+			}
+			sceneName = "Scene"
+		)
+		{
+		token preliminary:anchoring:type = "${options.ar.anchoring.type}"
+		token preliminary:planeAnchoring:alignment = "${options.ar.planeAnchoring.alignment}"
+
+`;
+
+}
+
+function buildSceneEnd() {
+
+	return `
+		}
+	}
+}
+
+`;
+
+}
+
+function buildUSDFileAsString( dataToInsert ) {
+
+	let output = buildHeader();
+	output += dataToInsert;
+	return strToU8( output );
+
+}
+
+// Xform
+
+function buildXform( object, geometry, material ) {
+
+	const name = 'Object_' + object.id;
+	const transform = buildMatrix( object.matrixWorld );
+
+	if ( object.matrixWorld.determinant() < 0 ) {
+
+		console.warn( 'THREE.USDZExporter: USDZ does not support negative scales', object );
+
+	}
+
+	return `def Xform "${ name }" (
+	prepend references = @./geometries/Geometry_${ geometry.id }.usda@</Geometry>
+	prepend apiSchemas = ["MaterialBindingAPI"]
+)
+{
+	matrix4d xformOp:transform = ${ transform }
+	uniform token[] xformOpOrder = ["xformOp:transform"]
+
+	rel material:binding = </Materials/Material_${ material.id }>
+}
+
+`;
+
+}
+
+function buildMatrix( matrix ) {
+
+	const array = matrix.elements;
+
+	return `( ${ buildMatrixRow( array, 0 ) }, ${ buildMatrixRow( array, 4 ) }, ${ buildMatrixRow( array, 8 ) }, ${ buildMatrixRow( array, 12 ) } )`;
+
+}
+
+function buildMatrixRow( array, offset ) {
+
+	return `(${ array[ offset + 0 ] }, ${ array[ offset + 1 ] }, ${ array[ offset + 2 ] }, ${ array[ offset + 3 ] })`;
+
+}
+
+// Mesh
+
+function buildMeshObject( geometry ) {
+
+	const mesh = buildMesh( geometry );
+	return `
+def "Geometry"
+{
+${mesh}
+}
+`;
+
+}
+
+function buildMesh( geometry ) {
+
+	const name = 'Geometry';
+	const attributes = geometry.attributes;
+	const count = attributes.position.count;
+
+	return `
+	def Mesh "${ name }"
+	{
+		int[] faceVertexCounts = [${ buildMeshVertexCount( geometry ) }]
+		int[] faceVertexIndices = [${ buildMeshVertexIndices( geometry ) }]
+		normal3f[] normals = [${ buildVector3Array( attributes.normal, count )}] (
+			interpolation = "vertex"
+		)
+		point3f[] points = [${ buildVector3Array( attributes.position, count )}]
+${ buildPrimvars( attributes ) }
+		uniform token subdivisionScheme = "none"
+	}
+`;
+
+}
+
+function buildMeshVertexCount( geometry ) {
+
+	const count = geometry.index !== null ? geometry.index.count : geometry.attributes.position.count;
+
+	return Array( count / 3 ).fill( 3 ).join( ', ' );
+
+}
+
+function buildMeshVertexIndices( geometry ) {
+
+	const index = geometry.index;
+	const array = [];
+
+	if ( index !== null ) {
+
+		for ( let i = 0; i < index.count; i ++ ) {
+
+			array.push( index.getX( i ) );
+
+		}
+
+	} else {
+
+		const length = geometry.attributes.position.count;
+
+		for ( let i = 0; i < length; i ++ ) {
+
+			array.push( i );
+
+		}
+
+	}
+
+	return array.join( ', ' );
+
+}
+
+function buildVector3Array( attribute, count ) {
+
+	if ( attribute === undefined ) {
+
+		console.warn( 'USDZExporter: Normals missing.' );
+		return Array( count ).fill( '(0, 0, 0)' ).join( ', ' );
+
+	}
+
+	const array = [];
+
+	for ( let i = 0; i < attribute.count; i ++ ) {
+
+		const x = attribute.getX( i );
+		const y = attribute.getY( i );
+		const z = attribute.getZ( i );
+
+		array.push( `(${ x.toPrecision( PRECISION ) }, ${ y.toPrecision( PRECISION ) }, ${ z.toPrecision( PRECISION ) })` );
+
+	}
+
+	return array.join( ', ' );
+
+}
+
+function buildVector2Array( attribute ) {
+
+	const array = [];
+
+	for ( let i = 0; i < attribute.count; i ++ ) {
+
+		const x = attribute.getX( i );
+		const y = attribute.getY( i );
+
+		array.push( `(${ x.toPrecision( PRECISION ) }, ${ 1 - y.toPrecision( PRECISION ) })` );
+
+	}
+
+	return array.join( ', ' );
+
+}
+
+function buildPrimvars( attributes ) {
+
+	let string = '';
+
+	for ( let i = 0; i < 4; i ++ ) {
+
+		const id = ( i > 0 ? i : '' );
+		const attribute = attributes[ 'uv' + id ];
+
+		if ( attribute !== undefined ) {
+
+			string += `
+		texCoord2f[] primvars:st${ id } = [${ buildVector2Array( attribute )}] (
+			interpolation = "vertex"
+		)`;
+
+		}
+
+	}
+
+	// vertex colors
+
+	const colorAttribute = attributes.color;
+
+	if ( colorAttribute !== undefined ) {
+
+		const count = colorAttribute.count;
+
+		string += `
+	color3f[] primvars:displayColor = [${buildVector3Array( colorAttribute, count )}] (
+		interpolation = "vertex"
+		)`;
+
+	}
+
+	return string;
+
+}
+
+// Materials
+
+function buildMaterials( materials, textures, quickLookCompatible = false ) {
+
+	const array = [];
+
+	for ( const uuid in materials ) {
+
+		const material = materials[ uuid ];
+
+		array.push( buildMaterial( material, textures, quickLookCompatible ) );
+
+	}
+
+	return `def "Materials"
+{
+${ array.join( '' ) }
+}
+
+`;
+
+}
+
+function buildMaterial( material, textures, quickLookCompatible = false ) {
+
+	// https://graphics.pixar.com/usd/docs/UsdPreviewSurface-Proposal.html
+
+	const pad = '			';
+	const inputs = [];
+	const samplers = [];
+
+	function buildTexture( texture, mapType, color ) {
+
+		const id = texture.source.id + '_' + texture.flipY;
+
+		textures[ id ] = texture;
+
+		const uv = texture.channel > 0 ? 'st' + texture.channel : 'st';
+
+		const WRAPPINGS = {
+			1000: 'repeat', // RepeatWrapping
+			1001: 'clamp', // ClampToEdgeWrapping
+			1002: 'mirror' // MirroredRepeatWrapping
+		};
+
+		const repeat = texture.repeat.clone();
+		const offset = texture.offset.clone();
+		const rotation = texture.rotation;
+
+		// rotation is around the wrong point. after rotation we need to shift offset again so that we're rotating around the right spot
+		const xRotationOffset = Math.sin( rotation );
+		const yRotationOffset = Math.cos( rotation );
+
+		// texture coordinates start in the opposite corner, need to correct
+		offset.y = 1 - offset.y - repeat.y;
+
+		// turns out QuickLook is buggy and interprets texture repeat inverted/applies operations in a different order.
+		// Apple Feedback: 	FB10036297 and FB11442287
+		if ( quickLookCompatible ) {
+
+			// This is NOT correct yet in QuickLook, but comes close for a range of models.
+			// It becomes more incorrect the bigger the offset is
+
+			offset.x = offset.x / repeat.x;
+			offset.y = offset.y / repeat.y;
+
+			offset.x += xRotationOffset / repeat.x;
+			offset.y += yRotationOffset - 1;
+
+		} else {
+
+			// results match glTF results exactly. verified correct in usdview.
+			offset.x += xRotationOffset * repeat.x;
+			offset.y += ( 1 - yRotationOffset ) * repeat.y;
+
+		}
+
+		return `
+		def Shader "PrimvarReader_${ mapType }"
+		{
+			uniform token info:id = "UsdPrimvarReader_float2"
+			float2 inputs:fallback = (0.0, 0.0)
+			token inputs:varname = "${ uv }"
+			float2 outputs:result
+		}
+
+		def Shader "Transform2d_${ mapType }"
+		{
+			uniform token info:id = "UsdTransform2d"
+			token inputs:in.connect = </Materials/Material_${ material.id }/PrimvarReader_${ mapType }.outputs:result>
+			float inputs:rotation = ${ ( rotation * ( 180 / Math.PI ) ).toFixed( PRECISION ) }
+			float2 inputs:scale = ${ buildVector2( repeat ) }
+			float2 inputs:translation = ${ buildVector2( offset ) }
+			float2 outputs:result
+		}
+
+		def Shader "Texture_${ texture.id }_${ mapType }"
+		{
+			uniform token info:id = "UsdUVTexture"
+			asset inputs:file = @textures/Texture_${ id }.png@
+			float2 inputs:st.connect = </Materials/Material_${ material.id }/Transform2d_${ mapType }.outputs:result>
+			${ color !== undefined ? 'float4 inputs:scale = ' + buildColor4( color ) : '' }
+			token inputs:sourceColorSpace = "${ texture.colorSpace === NoColorSpace ? 'raw' : 'sRGB' }"
+			token inputs:wrapS = "${ WRAPPINGS[ texture.wrapS ] }"
+			token inputs:wrapT = "${ WRAPPINGS[ texture.wrapT ] }"
+			float outputs:r
+			float outputs:g
+			float outputs:b
+			float3 outputs:rgb
+			${ material.transparent || material.alphaTest > 0.0 ? 'float outputs:a' : '' }
+		}`;
+
+	}
+
+
+	if ( material.side === DoubleSide ) {
+
+		console.warn( 'THREE.USDZExporter: USDZ does not support double sided materials', material );
+
+	}
+
+	if ( material.map !== null ) {
+
+		inputs.push( `${ pad }color3f inputs:diffuseColor.connect = </Materials/Material_${ material.id }/Texture_${ material.map.id }_diffuse.outputs:rgb>` );
+
+		if ( material.transparent ) {
+
+			inputs.push( `${ pad }float inputs:opacity.connect = </Materials/Material_${ material.id }/Texture_${ material.map.id }_diffuse.outputs:a>` );
+
+		} else if ( material.alphaTest > 0.0 ) {
+
+			inputs.push( `${ pad }float inputs:opacity.connect = </Materials/Material_${ material.id }/Texture_${ material.map.id }_diffuse.outputs:a>` );
+			inputs.push( `${ pad }float inputs:opacityThreshold = ${material.alphaTest}` );
+
+		}
+
+		samplers.push( buildTexture( material.map, 'diffuse', material.color ) );
+
+	} else {
+
+		inputs.push( `${ pad }color3f inputs:diffuseColor = ${ buildColor( material.color ) }` );
+
+	}
+
+	if ( material.emissiveMap !== null ) {
+
+		inputs.push( `${ pad }color3f inputs:emissiveColor.connect = </Materials/Material_${ material.id }/Texture_${ material.emissiveMap.id }_emissive.outputs:rgb>` );
+
+		samplers.push( buildTexture( material.emissiveMap, 'emissive' ) );
+
+	} else if ( material.emissive.getHex() > 0 ) {
+
+		inputs.push( `${ pad }color3f inputs:emissiveColor = ${ buildColor( material.emissive ) }` );
+
+	}
+
+	if ( material.normalMap !== null ) {
+
+		inputs.push( `${ pad }normal3f inputs:normal.connect = </Materials/Material_${ material.id }/Texture_${ material.normalMap.id }_normal.outputs:rgb>` );
+
+		samplers.push( buildTexture( material.normalMap, 'normal' ) );
+
+	}
+
+	if ( material.aoMap !== null ) {
+
+		inputs.push( `${ pad }float inputs:occlusion.connect = </Materials/Material_${ material.id }/Texture_${ material.aoMap.id }_occlusion.outputs:r>` );
+
+		samplers.push( buildTexture( material.aoMap, 'occlusion' ) );
+
+	}
+
+	if ( material.roughnessMap !== null && material.roughness === 1 ) {
+
+		inputs.push( `${ pad }float inputs:roughness.connect = </Materials/Material_${ material.id }/Texture_${ material.roughnessMap.id }_roughness.outputs:g>` );
+
+		samplers.push( buildTexture( material.roughnessMap, 'roughness' ) );
+
+	} else {
+
+		inputs.push( `${ pad }float inputs:roughness = ${ material.roughness }` );
+
+	}
+
+	if ( material.metalnessMap !== null && material.metalness === 1 ) {
+
+		inputs.push( `${ pad }float inputs:metallic.connect = </Materials/Material_${ material.id }/Texture_${ material.metalnessMap.id }_metallic.outputs:b>` );
+
+		samplers.push( buildTexture( material.metalnessMap, 'metallic' ) );
+
+	} else {
+
+		inputs.push( `${ pad }float inputs:metallic = ${ material.metalness }` );
+
+	}
+
+	if ( material.alphaMap !== null ) {
+
+		inputs.push( `${pad}float inputs:opacity.connect = </Materials/Material_${material.id}/Texture_${material.alphaMap.id}_opacity.outputs:r>` );
+		inputs.push( `${pad}float inputs:opacityThreshold = 0.0001` );
+
+		samplers.push( buildTexture( material.alphaMap, 'opacity' ) );
+
+	} else {
+
+		inputs.push( `${pad}float inputs:opacity = ${material.opacity}` );
+
+	}
+
+	if ( material.isMeshPhysicalMaterial ) {
+
+		inputs.push( `${ pad }float inputs:clearcoat = ${ material.clearcoat }` );
+		inputs.push( `${ pad }float inputs:clearcoatRoughness = ${ material.clearcoatRoughness }` );
+		inputs.push( `${ pad }float inputs:ior = ${ material.ior }` );
+
+	}
+
+	return `
+	def Material "Material_${ material.id }"
+	{
+		def Shader "PreviewSurface"
+		{
+			uniform token info:id = "UsdPreviewSurface"
+${ inputs.join( '\n' ) }
+			int inputs:useSpecularWorkflow = 0
+			token outputs:surface
+		}
+
+		token outputs:surface.connect = </Materials/Material_${ material.id }/PreviewSurface.outputs:surface>
+
+${ samplers.join( '\n' ) }
+
+	}
+`;
+
+}
+
+function buildColor( color ) {
+
+	return `(${ color.r }, ${ color.g }, ${ color.b })`;
+
+}
+
+function buildColor4( color ) {
+
+	return `(${ color.r }, ${ color.g }, ${ color.b }, 1.0)`;
+
+}
+
+function buildVector2( vector ) {
+
+	return `(${ vector.x }, ${ vector.y })`;
+
+}
+
+
+function buildCamera( camera ) {
+
+	const name = camera.name ? camera.name : 'Camera_' + camera.id;
+
+	const transform = buildMatrix( camera.matrixWorld );
+
+	if ( camera.matrixWorld.determinant() < 0 ) {
+
+		console.warn( 'THREE.USDZExporter: USDZ does not support negative scales', camera );
+
+	}
+
+	if ( camera.isOrthographicCamera ) {
+
+		return `def Camera "${name}"
+		{
+			matrix4d xformOp:transform = ${ transform }
+			uniform token[] xformOpOrder = ["xformOp:transform"]
+
+			float2 clippingRange = (${ camera.near.toPrecision( PRECISION ) }, ${ camera.far.toPrecision( PRECISION ) })
+			float horizontalAperture = ${ ( ( Math.abs( camera.left ) + Math.abs( camera.right ) ) * 10 ).toPrecision( PRECISION ) }
+			float verticalAperture = ${ ( ( Math.abs( camera.top ) + Math.abs( camera.bottom ) ) * 10 ).toPrecision( PRECISION ) }
+			token projection = "orthographic"
+		}
+	
+	`;
+
+	} else {
+
+		return `def Camera "${name}"
+		{
+			matrix4d xformOp:transform = ${ transform }
+			uniform token[] xformOpOrder = ["xformOp:transform"]
+
+			float2 clippingRange = (${ camera.near.toPrecision( PRECISION ) }, ${ camera.far.toPrecision( PRECISION ) })
+			float focalLength = ${ camera.getFocalLength().toPrecision( PRECISION ) }
+			float focusDistance = ${ camera.focus.toPrecision( PRECISION ) }
+			float horizontalAperture = ${ camera.getFilmWidth().toPrecision( PRECISION ) }
+			token projection = "perspective"
+			float verticalAperture = ${ camera.getFilmHeight().toPrecision( PRECISION ) }
+		}
+	
+	`;
+
+	}
+
+}
+
+export { USDZExporter };