diff options
Diffstat (limited to 'client/splash/vendor/DRACOLoader.js')
| -rw-r--r-- | client/splash/vendor/DRACOLoader.js | 518 |
1 files changed, 0 insertions, 518 deletions
diff --git a/client/splash/vendor/DRACOLoader.js b/client/splash/vendor/DRACOLoader.js deleted file mode 100644 index 64e6d801..00000000 --- a/client/splash/vendor/DRACOLoader.js +++ /dev/null @@ -1,518 +0,0 @@ -// Copyright 2016 The Draco Authors. -// -// Licensed under the Apache License, Version 2.0 (the "License"); -// you may not use this file except in compliance with the License. -// You may obtain a copy of the License at -// -// http://www.apache.org/licenses/LICENSE-2.0 -// -// Unless required by applicable law or agreed to in writing, software -// distributed under the License is distributed on an "AS IS" BASIS, -// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. -// See the License for the specific language governing permissions and -// limitations under the License. -// - -import * as THREE from 'three'; - -/** - * @param {THREE.LoadingManager} manager - */ -DRACOLoader = function(manager) { - this.timeLoaded = 0; - this.manager = manager || THREE.DefaultLoadingManager; - this.materials = null; - this.verbosity = 0; - this.attributeOptions = {}; - this.drawMode = THREE.TrianglesDrawMode; - // Native Draco attribute type to Three.JS attribute type. - this.nativeAttributeMap = { - 'position' : 'POSITION', - 'normal' : 'NORMAL', - 'color' : 'COLOR', - 'uv' : 'TEX_COORD' - }; -}; - -DRACOLoader.prototype = { - - constructor: DRACOLoader, - - load: function(url, onLoad, onProgress, onError) { - var scope = this; - var loader = new THREE.FileLoader(scope.manager); - loader.setPath(this.path); - loader.setResponseType('arraybuffer'); - if (this.crossOrigin !== undefined) { - loader.crossOrigin = this.crossOrigin; - } - loader.load(url, function(blob) { - scope.decodeDracoFile(blob, onLoad); - }, onProgress, onError); - }, - - setPath: function(value) { - this.path = value; - }, - - setCrossOrigin: function(value) { - this.crossOrigin = value; - }, - - setVerbosity: function(level) { - this.verbosity = level; - }, - - /** - * Sets desired mode for generated geometry indices. - * Can be either: - * THREE.TrianglesDrawMode - * THREE.TriangleStripDrawMode - */ - setDrawMode: function(drawMode) { - this.drawMode = drawMode; - }, - - /** - * Skips dequantization for a specific attribute. - * |attributeName| is the THREE.js name of the given attribute type. - * The only currently supported |attributeName| is 'position', more may be - * added in future. - */ - setSkipDequantization: function(attributeName, skip) { - var skipDequantization = true; - if (typeof skip !== 'undefined') - skipDequantization = skip; - this.getAttributeOptions(attributeName).skipDequantization = - skipDequantization; - }, - - /** - * |attributeUniqueIdMap| specifies attribute unique id for an attribute in - * the geometry to be decoded. The name of the attribute must be one of the - * supported attribute type in Three.JS, including: - * 'position', - * 'color', - * 'normal', - * 'uv', - * 'uv2', - * 'skinIndex', - * 'skinWeight'. - * The format is: - * attributeUniqueIdMap[attributeName] = attributeId - */ - decodeDracoFile: function(rawBuffer, callback, attributeUniqueIdMap, - attributeTypeMap) { - var scope = this; - DRACOLoader.getDecoderModule() - .then( function ( module ) { - scope.decodeDracoFileInternal( rawBuffer, module.decoder, callback, - attributeUniqueIdMap || {}, attributeTypeMap || {}); - }); - }, - - decodeDracoFileInternal: function(rawBuffer, dracoDecoder, callback, - attributeUniqueIdMap, attributeTypeMap) { - /* - * Here is how to use Draco Javascript decoder and get the geometry. - */ - var buffer = new dracoDecoder.DecoderBuffer(); - buffer.Init(new Int8Array(rawBuffer), rawBuffer.byteLength); - var decoder = new dracoDecoder.Decoder(); - - /* - * Determine what type is this file: mesh or point cloud. - */ - var geometryType = decoder.GetEncodedGeometryType(buffer); - if (geometryType == dracoDecoder.TRIANGULAR_MESH) { - if (this.verbosity > 0) { - console.log('Loaded a mesh.'); - } - } else if (geometryType == dracoDecoder.POINT_CLOUD) { - if (this.verbosity > 0) { - console.log('Loaded a point cloud.'); - } - } else { - var errorMsg = 'THREE.DRACOLoader: Unknown geometry type.' - console.error(errorMsg); - throw new Error(errorMsg); - } - callback(this.convertDracoGeometryTo3JS(dracoDecoder, decoder, - geometryType, buffer, attributeUniqueIdMap, attributeTypeMap)); - }, - - addAttributeToGeometry: function(dracoDecoder, decoder, dracoGeometry, - attributeName, attributeType, attribute, - geometry, geometryBuffer) { - if (attribute.ptr === 0) { - var errorMsg = 'THREE.DRACOLoader: No attribute ' + attributeName; - console.error(errorMsg); - throw new Error(errorMsg); - } - - var numComponents = attribute.num_components(); - var numPoints = dracoGeometry.num_points(); - var numValues = numPoints * numComponents; - var attributeData; - var TypedBufferAttribute; - - switch ( attributeType ) { - - case Float32Array: - attributeData = new dracoDecoder.DracoFloat32Array(); - decoder.GetAttributeFloatForAllPoints( - dracoGeometry, attribute, attributeData); - geometryBuffer[ attributeName ] = new Float32Array( numValues ); - TypedBufferAttribute = THREE.Float32BufferAttribute; - break; - - case Int8Array: - attributeData = new dracoDecoder.DracoInt8Array(); - decoder.GetAttributeInt8ForAllPoints( - dracoGeometry, attribute, attributeData ); - geometryBuffer[ attributeName ] = new Int8Array( numValues ); - TypedBufferAttribute = THREE.Int8BufferAttribute; - break; - - case Int16Array: - attributeData = new dracoDecoder.DracoInt16Array(); - decoder.GetAttributeInt16ForAllPoints( - dracoGeometry, attribute, attributeData); - geometryBuffer[ attributeName ] = new Int16Array( numValues ); - TypedBufferAttribute = THREE.Int16BufferAttribute; - break; - - case Int32Array: - attributeData = new dracoDecoder.DracoInt32Array(); - decoder.GetAttributeInt32ForAllPoints( - dracoGeometry, attribute, attributeData); - geometryBuffer[ attributeName ] = new Int32Array( numValues ); - TypedBufferAttribute = THREE.Int32BufferAttribute; - break; - - case Uint8Array: - attributeData = new dracoDecoder.DracoUInt8Array(); - decoder.GetAttributeUInt8ForAllPoints( - dracoGeometry, attribute, attributeData); - geometryBuffer[ attributeName ] = new Uint8Array( numValues ); - TypedBufferAttribute = THREE.Uint8BufferAttribute; - break; - - case Uint16Array: - attributeData = new dracoDecoder.DracoUInt16Array(); - decoder.GetAttributeUInt16ForAllPoints( - dracoGeometry, attribute, attributeData); - geometryBuffer[ attributeName ] = new Uint16Array( numValues ); - TypedBufferAttribute = THREE.Uint16BufferAttribute; - break; - - case Uint32Array: - attributeData = new dracoDecoder.DracoUInt32Array(); - decoder.GetAttributeUInt32ForAllPoints( - dracoGeometry, attribute, attributeData); - geometryBuffer[ attributeName ] = new Uint32Array( numValues ); - TypedBufferAttribute = THREE.Uint32BufferAttribute; - break; - - default: - var errorMsg = 'THREE.DRACOLoader: Unexpected attribute type.'; - console.error( errorMsg ); - throw new Error( errorMsg ); - - } - - // Copy data from decoder. - for (var i = 0; i < numValues; i++) { - geometryBuffer[attributeName][i] = attributeData.GetValue(i); - } - // Add attribute to THREEJS geometry for rendering. - geometry.addAttribute(attributeName, - new TypedBufferAttribute(geometryBuffer[attributeName], - numComponents)); - dracoDecoder.destroy(attributeData); - }, - - convertDracoGeometryTo3JS: function(dracoDecoder, decoder, geometryType, - buffer, attributeUniqueIdMap, - attributeTypeMap) { - if (this.getAttributeOptions('position').skipDequantization === true) { - decoder.SkipAttributeTransform(dracoDecoder.POSITION); - } - var dracoGeometry; - var decodingStatus; - const start_time = performance.now(); - if (geometryType === dracoDecoder.TRIANGULAR_MESH) { - dracoGeometry = new dracoDecoder.Mesh(); - decodingStatus = decoder.DecodeBufferToMesh(buffer, dracoGeometry); - } else { - dracoGeometry = new dracoDecoder.PointCloud(); - decodingStatus = - decoder.DecodeBufferToPointCloud(buffer, dracoGeometry); - } - if (!decodingStatus.ok() || dracoGeometry.ptr == 0) { - var errorMsg = 'THREE.DRACOLoader: Decoding failed: '; - errorMsg += decodingStatus.error_msg(); - console.error(errorMsg); - dracoDecoder.destroy(decoder); - dracoDecoder.destroy(dracoGeometry); - throw new Error(errorMsg); - } - - var decode_end = performance.now(); - dracoDecoder.destroy(buffer); - /* - * Example on how to retrieve mesh and attributes. - */ - var numFaces; - if (geometryType == dracoDecoder.TRIANGULAR_MESH) { - numFaces = dracoGeometry.num_faces(); - if (this.verbosity > 0) { - console.log('Number of faces loaded: ' + numFaces.toString()); - } - } else { - numFaces = 0; - } - - var numPoints = dracoGeometry.num_points(); - var numAttributes = dracoGeometry.num_attributes(); - if (this.verbosity > 0) { - console.log('Number of points loaded: ' + numPoints.toString()); - console.log('Number of attributes loaded: ' + - numAttributes.toString()); - } - - // Verify if there is position attribute. - var posAttId = decoder.GetAttributeId(dracoGeometry, - dracoDecoder.POSITION); - if (posAttId == -1) { - var errorMsg = 'THREE.DRACOLoader: No position attribute found.'; - console.error(errorMsg); - dracoDecoder.destroy(decoder); - dracoDecoder.destroy(dracoGeometry); - throw new Error(errorMsg); - } - var posAttribute = decoder.GetAttribute(dracoGeometry, posAttId); - - // Structure for converting to THREEJS geometry later. - var geometryBuffer = {}; - // Import data to Three JS geometry. - var geometry = new THREE.BufferGeometry(); - - // Add native Draco attribute type to geometry. - for (var attributeName in this.nativeAttributeMap) { - // The native attribute type is only used when no unique Id is - // provided. For example, loading .drc files. - if (attributeUniqueIdMap[attributeName] === undefined) { - var attId = decoder.GetAttributeId(dracoGeometry, - dracoDecoder[this.nativeAttributeMap[attributeName]]); - if (attId !== -1) { - if (this.verbosity > 0) { - console.log('Loaded ' + attributeName + ' attribute.'); - } - var attribute = decoder.GetAttribute(dracoGeometry, attId); - this.addAttributeToGeometry(dracoDecoder, decoder, dracoGeometry, - attributeName, Float32Array, attribute, geometry, geometryBuffer); - } - } - } - - // Add attributes of user specified unique id. E.g. GLTF models. - for (var attributeName in attributeUniqueIdMap) { - var attributeType = attributeTypeMap[attributeName] || Float32Array; - var attributeId = attributeUniqueIdMap[attributeName]; - var attribute = decoder.GetAttributeByUniqueId(dracoGeometry, - attributeId); - this.addAttributeToGeometry(dracoDecoder, decoder, dracoGeometry, - attributeName, attributeType, attribute, geometry, geometryBuffer); - } - - // For mesh, we need to generate the faces. - if (geometryType == dracoDecoder.TRIANGULAR_MESH) { - if (this.drawMode === THREE.TriangleStripDrawMode) { - var stripsArray = new dracoDecoder.DracoInt32Array(); - var numStrips = decoder.GetTriangleStripsFromMesh( - dracoGeometry, stripsArray); - geometryBuffer.indices = new Uint32Array(stripsArray.size()); - for (var i = 0; i < stripsArray.size(); ++i) { - geometryBuffer.indices[i] = stripsArray.GetValue(i); - } - dracoDecoder.destroy(stripsArray); - } else { - var numIndices = numFaces * 3; - geometryBuffer.indices = new Uint32Array(numIndices); - var ia = new dracoDecoder.DracoInt32Array(); - for (var i = 0; i < numFaces; ++i) { - decoder.GetFaceFromMesh(dracoGeometry, i, ia); - var index = i * 3; - geometryBuffer.indices[index] = ia.GetValue(0); - geometryBuffer.indices[index + 1] = ia.GetValue(1); - geometryBuffer.indices[index + 2] = ia.GetValue(2); - } - dracoDecoder.destroy(ia); - } - } - - geometry.drawMode = this.drawMode; - if (geometryType == dracoDecoder.TRIANGULAR_MESH) { - geometry.setIndex(new(geometryBuffer.indices.length > 65535 ? - THREE.Uint32BufferAttribute : THREE.Uint16BufferAttribute) - (geometryBuffer.indices, 1)); - } - var posTransform = new dracoDecoder.AttributeQuantizationTransform(); - if (posTransform.InitFromAttribute(posAttribute)) { - // Quantized attribute. Store the quantization parameters into the - // THREE.js attribute. - geometry.attributes['position'].isQuantized = true; - geometry.attributes['position'].maxRange = posTransform.range(); - geometry.attributes['position'].numQuantizationBits = - posTransform.quantization_bits(); - geometry.attributes['position'].minValues = new Float32Array(3); - for (var i = 0; i < 3; ++i) { - geometry.attributes['position'].minValues[i] = - posTransform.min_value(i); - } - } - dracoDecoder.destroy(posTransform); - dracoDecoder.destroy(decoder); - dracoDecoder.destroy(dracoGeometry); - - this.decode_time = decode_end - start_time; - this.import_time = performance.now() - decode_end; - - if (this.verbosity > 0) { - console.log('Decode time: ' + this.decode_time); - console.log('Import time: ' + this.import_time); - } - return geometry; - }, - - isVersionSupported: function(version, callback) { - DRACOLoader.getDecoderModule() - .then( function ( module ) { - callback( module.decoder.isVersionSupported( version ) ); - }); - }, - - getAttributeOptions: function(attributeName) { - if (typeof this.attributeOptions[attributeName] === 'undefined') - this.attributeOptions[attributeName] = {}; - return this.attributeOptions[attributeName]; - } -}; - -DRACOLoader.decoderPath = './'; -DRACOLoader.decoderConfig = {}; -DRACOLoader.decoderModulePromise = null; - -/** - * Sets the base path for decoder source files. - * @param {string} path - */ -DRACOLoader.setDecoderPath = function ( path ) { - DRACOLoader.decoderPath = path; -}; - -/** - * Sets decoder configuration and releases singleton decoder module. Module - * will be recreated with the next decoding call. - * @param {Object} config - */ -DRACOLoader.setDecoderConfig = function ( config ) { - var wasmBinary = DRACOLoader.decoderConfig.wasmBinary; - DRACOLoader.decoderConfig = config || {}; - DRACOLoader.releaseDecoderModule(); - - // Reuse WASM binary. - if ( wasmBinary ) DRACOLoader.decoderConfig.wasmBinary = wasmBinary; -}; - -/** - * Releases the singleton DracoDecoderModule instance. Module will be recreated - * with the next decoding call. - */ -DRACOLoader.releaseDecoderModule = function () { - DRACOLoader.decoderModulePromise = null; -}; - -/** - * Gets WebAssembly or asm.js singleton instance of DracoDecoderModule - * after testing for browser support. Returns Promise that resolves when - * module is available. - * @return {Promise<{decoder: DracoDecoderModule}>} - */ -DRACOLoader.getDecoderModule = function () { - var scope = this; - var path = DRACOLoader.decoderPath; - var config = DRACOLoader.decoderConfig; - var promise = DRACOLoader.decoderModulePromise; - - if ( promise ) return promise; - - // Load source files. - if ( typeof DracoDecoderModule !== 'undefined' ) { - // Loaded externally. - promise = Promise.resolve(); - } else if ( typeof WebAssembly !== 'object' || config.type === 'js' ) { - // Load with asm.js. - promise = DRACOLoader._loadScript( path + 'draco_decoder.js' ); - } else { - // Load with WebAssembly. - config.wasmBinaryFile = path + 'draco_decoder.wasm'; - promise = DRACOLoader._loadScript( path + 'draco_wasm_wrapper.js' ) - .then( function () { - return DRACOLoader._loadArrayBuffer( config.wasmBinaryFile ); - } ) - .then( function ( wasmBinary ) { - config.wasmBinary = wasmBinary; - } ); - } - - // Wait for source files, then create and return a decoder. - promise = promise.then( function () { - return new Promise( function ( resolve ) { - config.onModuleLoaded = function ( decoder ) { - scope.timeLoaded = performance.now(); - // Module is Promise-like. Wrap before resolving to avoid loop. - resolve( { decoder: decoder } ); - }; - DracoDecoderModule( config ); - } ); - } ); - - DRACOLoader.decoderModulePromise = promise; - return promise; -}; - -/** - * @param {string} src - * @return {Promise} - */ -DRACOLoader._loadScript = function ( src ) { - var prevScript = document.getElementById( 'decoder_script' ); - if ( prevScript !== null ) { - prevScript.parentNode.removeChild( prevScript ); - } - var head = document.getElementsByTagName( 'head' )[ 0 ]; - var script = document.createElement( 'script' ); - script.id = 'decoder_script'; - script.type = 'text/javascript'; - script.src = src; - return new Promise( function ( resolve ) { - script.onload = resolve; - head.appendChild( script ); - }); -}; - -/** - * @param {string} src - * @return {Promise} - */ -DRACOLoader._loadArrayBuffer = function ( src ) { - var loader = new THREE.FileLoader(); - loader.setResponseType( 'arraybuffer' ); - return new Promise( function( resolve, reject ) { - loader.load( src, resolve, undefined, reject ); - }); -}; - -export default DRACOLoader |