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LegacyGLTFLoader.js
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/**
* @license
*
* The MIT License
*
* Copyright © 2010-2019 three.js authors
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/**
* @author Rich Tibbett / https://github.com/richtr
* @author mrdoob / http://mrdoob.com/
* @author Tony Parisi / http://www.tonyparisi.com/
* @author Takahiro / https://github.com/takahirox
*/
THREE.LegacyGLTFLoader = ( function () {
function LegacyGLTFLoader( manager ) {
this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
}
LegacyGLTFLoader.prototype = {
constructor: LegacyGLTFLoader,
crossOrigin: 'anonymous',
load: function ( url, onLoad, onProgress, onError ) {
var scope = this;
var resourcePath;
if ( this.resourcePath !== undefined ) {
resourcePath = this.resourcePath;
} else if ( this.path !== undefined ) {
resourcePath = this.path;
} else {
resourcePath = THREE.LoaderUtils.extractUrlBase( url );
}
var loader = new THREE.FileLoader( scope.manager );
loader.setPath( this.path );
loader.setResponseType( 'arraybuffer' );
loader.load( url, function ( data ) {
scope.parse( data, resourcePath, onLoad );
}, onProgress, onError );
},
setCrossOrigin: function ( value ) {
this.crossOrigin = value;
return this;
},
setPath: function ( value ) {
this.path = value;
},
setResourcePath: function ( value ) {
this.resourcePath = value;
return this;
},
parse: function ( data, path, callback ) {
var content;
var extensions = {};
var magic = THREE.LoaderUtils.decodeText( new Uint8Array( data, 0, 4 ) );
if ( magic === BINARY_EXTENSION_HEADER_DEFAULTS.magic ) {
extensions[ EXTENSIONS.KHR_BINARY_GLTF ] = new GLTFBinaryExtension( data );
content = extensions[ EXTENSIONS.KHR_BINARY_GLTF ].content;
} else {
content = THREE.LoaderUtils.decodeText( new Uint8Array( data ) );
}
var json = JSON.parse( content );
if ( json.extensionsUsed && json.extensionsUsed.indexOf( EXTENSIONS.KHR_MATERIALS_COMMON ) >= 0 ) {
extensions[ EXTENSIONS.KHR_MATERIALS_COMMON ] = new GLTFMaterialsCommonExtension( json );
}
var parser = new GLTFParser( json, extensions, {
crossOrigin: this.crossOrigin,
manager: this.manager,
path: path || this.resourcePath || ''
} );
parser.parse( function ( scene, scenes, cameras, animations ) {
var glTF = {
"scene": scene,
"scenes": scenes,
"cameras": cameras,
"animations": animations
};
callback( glTF );
} );
}
};
/* GLTFREGISTRY */
function GLTFRegistry() {
var objects = {};
return {
get: function ( key ) {
return objects[ key ];
},
add: function ( key, object ) {
objects[ key ] = object;
},
remove: function ( key ) {
delete objects[ key ];
},
removeAll: function () {
objects = {};
},
update: function ( scene, camera ) {
for ( var name in objects ) {
var object = objects[ name ];
if ( object.update ) {
object.update( scene, camera );
}
}
}
};
}
/* GLTFSHADERS */
LegacyGLTFLoader.Shaders = {
update: function () {
console.warn( 'THREE.LegacyGLTFLoader.Shaders has been deprecated, and now updates automatically.' );
}
};
/* GLTFSHADER */
function GLTFShader( targetNode, allNodes ) {
var boundUniforms = {};
// bind each uniform to its source node
var uniforms = targetNode.material.uniforms;
for ( var uniformId in uniforms ) {
var uniform = uniforms[ uniformId ];
if ( uniform.semantic ) {
var sourceNodeRef = uniform.node;
var sourceNode = targetNode;
if ( sourceNodeRef ) {
sourceNode = allNodes[ sourceNodeRef ];
}
boundUniforms[ uniformId ] = {
semantic: uniform.semantic,
sourceNode: sourceNode,
targetNode: targetNode,
uniform: uniform
};
}
}
this.boundUniforms = boundUniforms;
this._m4 = new THREE.Matrix4();
}
// Update - update all the uniform values
GLTFShader.prototype.update = function ( scene, camera ) {
var boundUniforms = this.boundUniforms;
for ( var name in boundUniforms ) {
var boundUniform = boundUniforms[ name ];
switch ( boundUniform.semantic ) {
case "MODELVIEW":
var m4 = boundUniform.uniform.value;
m4.multiplyMatrices( camera.matrixWorldInverse, boundUniform.sourceNode.matrixWorld );
break;
case "MODELVIEWINVERSETRANSPOSE":
var m3 = boundUniform.uniform.value;
this._m4.multiplyMatrices( camera.matrixWorldInverse, boundUniform.sourceNode.matrixWorld );
m3.getNormalMatrix( this._m4 );
break;
case "PROJECTION":
var m4 = boundUniform.uniform.value;
m4.copy( camera.projectionMatrix );
break;
case "JOINTMATRIX":
var m4v = boundUniform.uniform.value;
for ( var mi = 0; mi < m4v.length; mi ++ ) {
// So it goes like this:
// SkinnedMesh world matrix is already baked into MODELVIEW;
// transform joints to local space,
// then transform using joint's inverse
m4v[ mi ]
.getInverse( boundUniform.sourceNode.matrixWorld )
.multiply( boundUniform.targetNode.skeleton.bones[ mi ].matrixWorld )
.multiply( boundUniform.targetNode.skeleton.boneInverses[ mi ] )
.multiply( boundUniform.targetNode.bindMatrix );
}
break;
default :
console.warn( "Unhandled shader semantic: " + boundUniform.semantic );
break;
}
}
};
/* ANIMATION */
LegacyGLTFLoader.Animations = {
update: function () {
console.warn( 'THREE.LegacyGLTFLoader.Animation has been deprecated. Use THREE.AnimationMixer instead.' );
}
};
/*********************************/
/********** EXTENSIONS ***********/
/*********************************/
var EXTENSIONS = {
KHR_BINARY_GLTF: 'KHR_binary_glTF',
KHR_MATERIALS_COMMON: 'KHR_materials_common'
};
/* MATERIALS COMMON EXTENSION */
function GLTFMaterialsCommonExtension( json ) {
this.name = EXTENSIONS.KHR_MATERIALS_COMMON;
this.lights = {};
var extension = ( json.extensions && json.extensions[ EXTENSIONS.KHR_MATERIALS_COMMON ] ) || {};
var lights = extension.lights || {};
for ( var lightId in lights ) {
var light = lights[ lightId ];
var lightNode;
var lightParams = light[ light.type ];
var color = new THREE.Color().fromArray( lightParams.color );
switch ( light.type ) {
case "directional":
lightNode = new THREE.DirectionalLight( color );
lightNode.position.set( 0, 0, 1 );
break;
case "point":
lightNode = new THREE.PointLight( color );
break;
case "spot":
lightNode = new THREE.SpotLight( color );
lightNode.position.set( 0, 0, 1 );
break;
case "ambient":
lightNode = new THREE.AmbientLight( color );
break;
}
if ( lightNode ) {
this.lights[ lightId ] = lightNode;
}
}
}
/* BINARY EXTENSION */
var BINARY_EXTENSION_BUFFER_NAME = 'binary_glTF';
var BINARY_EXTENSION_HEADER_DEFAULTS = { magic: 'glTF', version: 1, contentFormat: 0 };
var BINARY_EXTENSION_HEADER_LENGTH = 20;
function GLTFBinaryExtension( data ) {
this.name = EXTENSIONS.KHR_BINARY_GLTF;
var headerView = new DataView( data, 0, BINARY_EXTENSION_HEADER_LENGTH );
var header = {
magic: THREE.LoaderUtils.decodeText( new Uint8Array( data.slice( 0, 4 ) ) ),
version: headerView.getUint32( 4, true ),
length: headerView.getUint32( 8, true ),
contentLength: headerView.getUint32( 12, true ),
contentFormat: headerView.getUint32( 16, true )
};
for ( var key in BINARY_EXTENSION_HEADER_DEFAULTS ) {
var value = BINARY_EXTENSION_HEADER_DEFAULTS[ key ];
if ( header[ key ] !== value ) {
throw new Error( 'Unsupported glTF-Binary header: Expected "%s" to be "%s".', key, value );
}
}
var contentArray = new Uint8Array( data, BINARY_EXTENSION_HEADER_LENGTH, header.contentLength );
this.header = header;
this.content = THREE.LoaderUtils.decodeText( contentArray );
this.body = data.slice( BINARY_EXTENSION_HEADER_LENGTH + header.contentLength, header.length );
}
GLTFBinaryExtension.prototype.loadShader = function ( shader, bufferViews ) {
var bufferView = bufferViews[ shader.extensions[ EXTENSIONS.KHR_BINARY_GLTF ].bufferView ];
var array = new Uint8Array( bufferView );
return THREE.LoaderUtils.decodeText( array );
};
/*********************************/
/********** INTERNALS ************/
/*********************************/
/* CONSTANTS */
var WEBGL_CONSTANTS = {
FLOAT: 5126,
//FLOAT_MAT2: 35674,
FLOAT_MAT3: 35675,
FLOAT_MAT4: 35676,
FLOAT_VEC2: 35664,
FLOAT_VEC3: 35665,
FLOAT_VEC4: 35666,
LINEAR: 9729,
REPEAT: 10497,
SAMPLER_2D: 35678,
TRIANGLES: 4,
LINES: 1,
UNSIGNED_BYTE: 5121,
UNSIGNED_SHORT: 5123,
VERTEX_SHADER: 35633,
FRAGMENT_SHADER: 35632
};
var WEBGL_TYPE = {
5126: Number,
//35674: THREE.Matrix2,
35675: THREE.Matrix3,
35676: THREE.Matrix4,
35664: THREE.Vector2,
35665: THREE.Vector3,
35666: THREE.Vector4,
35678: THREE.Texture
};
var WEBGL_COMPONENT_TYPES = {
5120: Int8Array,
5121: Uint8Array,
5122: Int16Array,
5123: Uint16Array,
5125: Uint32Array,
5126: Float32Array
};
var WEBGL_FILTERS = {
9728: THREE.NearestFilter,
9729: THREE.LinearFilter,
9984: THREE.NearestMipMapNearestFilter,
9985: THREE.LinearMipMapNearestFilter,
9986: THREE.NearestMipMapLinearFilter,
9987: THREE.LinearMipMapLinearFilter
};
var WEBGL_WRAPPINGS = {
33071: THREE.ClampToEdgeWrapping,
33648: THREE.MirroredRepeatWrapping,
10497: THREE.RepeatWrapping
};
var WEBGL_TEXTURE_FORMATS = {
6406: THREE.AlphaFormat,
6407: THREE.RGBFormat,
6408: THREE.RGBAFormat,
6409: THREE.LuminanceFormat,
6410: THREE.LuminanceAlphaFormat
};
var WEBGL_TEXTURE_DATATYPES = {
5121: THREE.UnsignedByteType,
32819: THREE.UnsignedShort4444Type,
32820: THREE.UnsignedShort5551Type,
33635: THREE.UnsignedShort565Type
};
var WEBGL_SIDES = {
1028: THREE.BackSide, // Culling front
1029: THREE.FrontSide // Culling back
//1032: THREE.NoSide // Culling front and back, what to do?
};
var WEBGL_DEPTH_FUNCS = {
512: THREE.NeverDepth,
513: THREE.LessDepth,
514: THREE.EqualDepth,
515: THREE.LessEqualDepth,
516: THREE.GreaterEqualDepth,
517: THREE.NotEqualDepth,
518: THREE.GreaterEqualDepth,
519: THREE.AlwaysDepth
};
var WEBGL_BLEND_EQUATIONS = {
32774: THREE.AddEquation,
32778: THREE.SubtractEquation,
32779: THREE.ReverseSubtractEquation
};
var WEBGL_BLEND_FUNCS = {
0: THREE.ZeroFactor,
1: THREE.OneFactor,
768: THREE.SrcColorFactor,
769: THREE.OneMinusSrcColorFactor,
770: THREE.SrcAlphaFactor,
771: THREE.OneMinusSrcAlphaFactor,
772: THREE.DstAlphaFactor,
773: THREE.OneMinusDstAlphaFactor,
774: THREE.DstColorFactor,
775: THREE.OneMinusDstColorFactor,
776: THREE.SrcAlphaSaturateFactor
// The followings are not supported by Three.js yet
//32769: CONSTANT_COLOR,
//32770: ONE_MINUS_CONSTANT_COLOR,
//32771: CONSTANT_ALPHA,
//32772: ONE_MINUS_CONSTANT_COLOR
};
var WEBGL_TYPE_SIZES = {
'SCALAR': 1,
'VEC2': 2,
'VEC3': 3,
'VEC4': 4,
'MAT2': 4,
'MAT3': 9,
'MAT4': 16
};
var PATH_PROPERTIES = {
scale: 'scale',
translation: 'position',
rotation: 'quaternion'
};
var INTERPOLATION = {
LINEAR: THREE.InterpolateLinear,
STEP: THREE.InterpolateDiscrete
};
var STATES_ENABLES = {
2884: 'CULL_FACE',
2929: 'DEPTH_TEST',
3042: 'BLEND',
3089: 'SCISSOR_TEST',
32823: 'POLYGON_OFFSET_FILL',
32926: 'SAMPLE_ALPHA_TO_COVERAGE'
};
/* UTILITY FUNCTIONS */
function _each( object, callback, thisObj ) {
if ( ! object ) {
return Promise.resolve();
}
var results;
var fns = [];
if ( Object.prototype.toString.call( object ) === '[object Array]' ) {
results = [];
var length = object.length;
for ( var idx = 0; idx < length; idx ++ ) {
var value = callback.call( thisObj || this, object[ idx ], idx );
if ( value ) {
fns.push( value );
if ( value instanceof Promise ) {
value.then( function ( key, value ) {
results[ key ] = value;
}.bind( this, idx ) );
} else {
results[ idx ] = value;
}
}
}
} else {
results = {};
for ( var key in object ) {
if ( object.hasOwnProperty( key ) ) {
var value = callback.call( thisObj || this, object[ key ], key );
if ( value ) {
fns.push( value );
if ( value instanceof Promise ) {
value.then( function ( key, value ) {
results[ key ] = value;
}.bind( this, key ) );
} else {
results[ key ] = value;
}
}
}
}
}
return Promise.all( fns ).then( function () {
return results;
} );
}
function resolveURL( url, path ) {
// Invalid URL
if ( typeof url !== 'string' || url === '' )
return '';
// Absolute URL http://,https://,//
if ( /^(https?:)?\/\//i.test( url ) ) {
return url;
}
// Data URI
if ( /^data:.*,.*$/i.test( url ) ) {
return url;
}
// Blob URL
if ( /^blob:.*$/i.test( url ) ) {
return url;
}
// Relative URL
return ( path || '' ) + url;
}
// Three.js seems too dependent on attribute names so globally
// replace those in the shader code
function replaceTHREEShaderAttributes( shaderText, technique ) {
// Expected technique attributes
var attributes = {};
for ( var attributeId in technique.attributes ) {
var pname = technique.attributes[ attributeId ];
var param = technique.parameters[ pname ];
var atype = param.type;
var semantic = param.semantic;
attributes[ attributeId ] = {
type: atype,
semantic: semantic
};
}
// Figure out which attributes to change in technique
var shaderParams = technique.parameters;
var shaderAttributes = technique.attributes;
var params = {};
for ( var attributeId in attributes ) {
var pname = shaderAttributes[ attributeId ];
var shaderParam = shaderParams[ pname ];
var semantic = shaderParam.semantic;
if ( semantic ) {
params[ attributeId ] = shaderParam;
}
}
for ( var pname in params ) {
var param = params[ pname ];
var semantic = param.semantic;
var regEx = new RegExp( "\\b" + pname + "\\b", "g" );
switch ( semantic ) {
case "POSITION":
shaderText = shaderText.replace( regEx, 'position' );
break;
case "NORMAL":
shaderText = shaderText.replace( regEx, 'normal' );
break;
case 'TEXCOORD_0':
case 'TEXCOORD0':
case 'TEXCOORD':
shaderText = shaderText.replace( regEx, 'uv' );
break;
case 'TEXCOORD_1':
shaderText = shaderText.replace( regEx, 'uv2' );
break;
case 'COLOR_0':
case 'COLOR0':
case 'COLOR':
shaderText = shaderText.replace( regEx, 'color' );
break;
case "WEIGHT":
shaderText = shaderText.replace( regEx, 'skinWeight' );
break;
case "JOINT":
shaderText = shaderText.replace( regEx, 'skinIndex' );
break;
}
}
return shaderText;
}
function createDefaultMaterial() {
return new THREE.MeshPhongMaterial( {
color: 0x00000,
emissive: 0x888888,
specular: 0x000000,
shininess: 0,
transparent: false,
depthTest: true,
side: THREE.FrontSide
} );
}
// Deferred constructor for RawShaderMaterial types
function DeferredShaderMaterial( params ) {
this.isDeferredShaderMaterial = true;
this.params = params;
}
DeferredShaderMaterial.prototype.create = function () {
var uniforms = THREE.UniformsUtils.clone( this.params.uniforms );
for ( var uniformId in this.params.uniforms ) {
var originalUniform = this.params.uniforms[ uniformId ];
if ( originalUniform.value instanceof THREE.Texture ) {
uniforms[ uniformId ].value = originalUniform.value;
uniforms[ uniformId ].value.needsUpdate = true;
}
uniforms[ uniformId ].semantic = originalUniform.semantic;
uniforms[ uniformId ].node = originalUniform.node;
}
this.params.uniforms = uniforms;
return new THREE.RawShaderMaterial( this.params );
};
/* GLTF PARSER */
function GLTFParser( json, extensions, options ) {
this.json = json || {};
this.extensions = extensions || {};
this.options = options || {};
// loader object cache
this.cache = new GLTFRegistry();
}
GLTFParser.prototype._withDependencies = function ( dependencies ) {
var _dependencies = {};
for ( var i = 0; i < dependencies.length; i ++ ) {
var dependency = dependencies[ i ];
var fnName = "load" + dependency.charAt( 0 ).toUpperCase() + dependency.slice( 1 );
var cached = this.cache.get( dependency );
if ( cached !== undefined ) {
_dependencies[ dependency ] = cached;
} else if ( this[ fnName ] ) {
var fn = this[ fnName ]();
this.cache.add( dependency, fn );
_dependencies[ dependency ] = fn;
}
}
return _each( _dependencies, function ( dependency ) {
return dependency;
} );
};
GLTFParser.prototype.parse = function ( callback ) {
var json = this.json;
// Clear the loader cache
this.cache.removeAll();
// Fire the callback on complete
this._withDependencies( [
"scenes",
"cameras",
"animations"
] ).then( function ( dependencies ) {
var scenes = [];
for ( var name in dependencies.scenes ) {
scenes.push( dependencies.scenes[ name ] );
}
var scene = json.scene !== undefined ? dependencies.scenes[ json.scene ] : scenes[ 0 ];
var cameras = [];
for ( var name in dependencies.cameras ) {
var camera = dependencies.cameras[ name ];
cameras.push( camera );
}
var animations = [];
for ( var name in dependencies.animations ) {
animations.push( dependencies.animations[ name ] );
}
callback( scene, scenes, cameras, animations );
} );
};
GLTFParser.prototype.loadShaders = function () {
var json = this.json;
var extensions = this.extensions;
var options = this.options;
return this._withDependencies( [
"bufferViews"
] ).then( function ( dependencies ) {
return _each( json.shaders, function ( shader ) {
if ( shader.extensions && shader.extensions[ EXTENSIONS.KHR_BINARY_GLTF ] ) {
return extensions[ EXTENSIONS.KHR_BINARY_GLTF ].loadShader( shader, dependencies.bufferViews );
}
return new Promise( function ( resolve ) {
var loader = new THREE.FileLoader( options.manager );
loader.setResponseType( 'text' );
loader.load( resolveURL( shader.uri, options.path ), function ( shaderText ) {
resolve( shaderText );
} );
} );
} );
} );
};
GLTFParser.prototype.loadBuffers = function () {
var json = this.json;
var extensions = this.extensions;
var options = this.options;
return _each( json.buffers, function ( buffer, name ) {
if ( name === BINARY_EXTENSION_BUFFER_NAME ) {