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- THREE.OBJLoader = ( function () {
-
- var object_pattern = /^[og]\s*(.+)?/;
-
- var material_library_pattern = /^mtllib /;
-
- var material_use_pattern = /^usemtl /;
- function ParserState() {
- var state = {
- objects: [],
- object: {},
- vertices: [],
- normals: [],
- colors: [],
- uvs: [],
- materialLibraries: [],
- startObject: function ( name, fromDeclaration ) {
-
-
- if ( this.object && this.object.fromDeclaration === false ) {
- this.object.name = name;
- this.object.fromDeclaration = ( fromDeclaration !== false );
- return;
- }
- var previousMaterial = ( this.object && typeof this.object.currentMaterial === 'function' ? this.object.currentMaterial() : undefined );
- if ( this.object && typeof this.object._finalize === 'function' ) {
- this.object._finalize( true );
- }
- this.object = {
- name: name || '',
- fromDeclaration: ( fromDeclaration !== false ),
- geometry: {
- vertices: [],
- normals: [],
- colors: [],
- uvs: []
- },
- materials: [],
- smooth: true,
- startMaterial: function ( name, libraries ) {
- var previous = this._finalize( false );
-
-
- if ( previous && ( previous.inherited || previous.groupCount <= 0 ) ) {
- this.materials.splice( previous.index, 1 );
- }
- var material = {
- index: this.materials.length,
- name: name || '',
- mtllib: ( Array.isArray( libraries ) && libraries.length > 0 ? libraries[ libraries.length - 1 ] : '' ),
- smooth: ( previous !== undefined ? previous.smooth : this.smooth ),
- groupStart: ( previous !== undefined ? previous.groupEnd : 0 ),
- groupEnd: - 1,
- groupCount: - 1,
- inherited: false,
- clone: function ( index ) {
- var cloned = {
- index: ( typeof index === 'number' ? index : this.index ),
- name: this.name,
- mtllib: this.mtllib,
- smooth: this.smooth,
- groupStart: 0,
- groupEnd: - 1,
- groupCount: - 1,
- inherited: false
- };
- cloned.clone = this.clone.bind( cloned );
- return cloned;
- }
- };
- this.materials.push( material );
- return material;
- },
- currentMaterial: function () {
- if ( this.materials.length > 0 ) {
- return this.materials[ this.materials.length - 1 ];
- }
- return undefined;
- },
- _finalize: function ( end ) {
- var lastMultiMaterial = this.currentMaterial();
- if ( lastMultiMaterial && lastMultiMaterial.groupEnd === - 1 ) {
- lastMultiMaterial.groupEnd = this.geometry.vertices.length / 3;
- lastMultiMaterial.groupCount = lastMultiMaterial.groupEnd - lastMultiMaterial.groupStart;
- lastMultiMaterial.inherited = false;
- }
-
- if ( end && this.materials.length > 1 ) {
- for ( var mi = this.materials.length - 1; mi >= 0; mi -- ) {
- if ( this.materials[ mi ].groupCount <= 0 ) {
- this.materials.splice( mi, 1 );
- }
- }
- }
-
- if ( end && this.materials.length === 0 ) {
- this.materials.push( {
- name: '',
- smooth: this.smooth
- } );
- }
- return lastMultiMaterial;
- }
- };
-
-
-
-
-
- if ( previousMaterial && previousMaterial.name && typeof previousMaterial.clone === 'function' ) {
- var declared = previousMaterial.clone( 0 );
- declared.inherited = true;
- this.object.materials.push( declared );
- }
- this.objects.push( this.object );
- },
- finalize: function () {
- if ( this.object && typeof this.object._finalize === 'function' ) {
- this.object._finalize( true );
- }
- },
- parseVertexIndex: function ( value, len ) {
- var index = parseInt( value, 10 );
- return ( index >= 0 ? index - 1 : index + len / 3 ) * 3;
- },
- parseNormalIndex: function ( value, len ) {
- var index = parseInt( value, 10 );
- return ( index >= 0 ? index - 1 : index + len / 3 ) * 3;
- },
- parseUVIndex: function ( value, len ) {
- var index = parseInt( value, 10 );
- return ( index >= 0 ? index - 1 : index + len / 2 ) * 2;
- },
- addVertex: function ( a, b, c ) {
- var src = this.vertices;
- var dst = this.object.geometry.vertices;
- dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
- dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
- dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
- },
- addVertexPoint: function ( a ) {
- var src = this.vertices;
- var dst = this.object.geometry.vertices;
- dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
- },
- addVertexLine: function ( a ) {
- var src = this.vertices;
- var dst = this.object.geometry.vertices;
- dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
- },
- addNormal: function ( a, b, c ) {
- var src = this.normals;
- var dst = this.object.geometry.normals;
- dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
- dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
- dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
- },
- addColor: function ( a, b, c ) {
- var src = this.colors;
- var dst = this.object.geometry.colors;
- dst.push( src[ a + 0 ], src[ a + 1 ], src[ a + 2 ] );
- dst.push( src[ b + 0 ], src[ b + 1 ], src[ b + 2 ] );
- dst.push( src[ c + 0 ], src[ c + 1 ], src[ c + 2 ] );
- },
- addUV: function ( a, b, c ) {
- var src = this.uvs;
- var dst = this.object.geometry.uvs;
- dst.push( src[ a + 0 ], src[ a + 1 ] );
- dst.push( src[ b + 0 ], src[ b + 1 ] );
- dst.push( src[ c + 0 ], src[ c + 1 ] );
- },
- addUVLine: function ( a ) {
- var src = this.uvs;
- var dst = this.object.geometry.uvs;
- dst.push( src[ a + 0 ], src[ a + 1 ] );
- },
- addFace: function ( a, b, c, ua, ub, uc, na, nb, nc ) {
- var vLen = this.vertices.length;
- var ia = this.parseVertexIndex( a, vLen );
- var ib = this.parseVertexIndex( b, vLen );
- var ic = this.parseVertexIndex( c, vLen );
- this.addVertex( ia, ib, ic );
- if ( ua !== undefined && ua !== '' ) {
- var uvLen = this.uvs.length;
- ia = this.parseUVIndex( ua, uvLen );
- ib = this.parseUVIndex( ub, uvLen );
- ic = this.parseUVIndex( uc, uvLen );
- this.addUV( ia, ib, ic );
- }
- if ( na !== undefined && na !== '' ) {
-
- var nLen = this.normals.length;
- ia = this.parseNormalIndex( na, nLen );
- ib = na === nb ? ia : this.parseNormalIndex( nb, nLen );
- ic = na === nc ? ia : this.parseNormalIndex( nc, nLen );
- this.addNormal( ia, ib, ic );
- }
- if ( this.colors.length > 0 ) {
- this.addColor( ia, ib, ic );
- }
- },
- addPointGeometry: function ( vertices ) {
- this.object.geometry.type = 'Points';
- var vLen = this.vertices.length;
- for ( var vi = 0, l = vertices.length; vi < l; vi ++ ) {
- this.addVertexPoint( this.parseVertexIndex( vertices[ vi ], vLen ) );
- }
- },
- addLineGeometry: function ( vertices, uvs ) {
- this.object.geometry.type = 'Line';
- var vLen = this.vertices.length;
- var uvLen = this.uvs.length;
- for ( var vi = 0, l = vertices.length; vi < l; vi ++ ) {
- this.addVertexLine( this.parseVertexIndex( vertices[ vi ], vLen ) );
- }
- for ( var uvi = 0, l = uvs.length; uvi < l; uvi ++ ) {
- this.addUVLine( this.parseUVIndex( uvs[ uvi ], uvLen ) );
- }
- }
- };
- state.startObject( '', false );
- return state;
- }
-
- function OBJLoader( manager ) {
- this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
- this.materials = null;
- }
- OBJLoader.prototype = {
- constructor: OBJLoader,
- load: function ( url, onLoad, onProgress, onError ) {
- var scope = this;
- var loader = new THREE.FileLoader( scope.manager );
- loader.setPath( this.path );
- loader.load( url, function ( text ) {
- onLoad( scope.parse( text ) );
- }, onProgress, onError );
- },
- setPath: function ( value ) {
- this.path = value;
- return this;
- },
- setMaterials: function ( materials ) {
- this.materials = materials;
- return this;
- },
- parse: function ( text ) {
- console.time( 'OBJLoader' );
- var state = new ParserState();
- if ( text.indexOf( '\r\n' ) !== - 1 ) {
-
- text = text.replace( /\r\n/g, '\n' );
- }
- if ( text.indexOf( '\\\n' ) !== - 1 ) {
-
- text = text.replace( /\\\n/g, '' );
- }
- var lines = text.split( '\n' );
- var line = '', lineFirstChar = '';
- var lineLength = 0;
- var result = [];
-
- var trimLeft = ( typeof ''.trimLeft === 'function' );
- for ( var i = 0, l = lines.length; i < l; i ++ ) {
- line = lines[ i ];
- line = trimLeft ? line.trimLeft() : line.trim();
- lineLength = line.length;
- if ( lineLength === 0 ) continue;
- lineFirstChar = line.charAt( 0 );
-
- if ( lineFirstChar === '#' ) continue;
- if ( lineFirstChar === 'v' ) {
- var data = line.split( /\s+/ );
- switch ( data[ 0 ] ) {
- case 'v':
- state.vertices.push(
- parseFloat( data[ 1 ] ),
- parseFloat( data[ 2 ] ),
- parseFloat( data[ 3 ] )
- );
- if ( data.length === 8 ) {
- state.colors.push(
- parseFloat( data[ 4 ] ),
- parseFloat( data[ 5 ] ),
- parseFloat( data[ 6 ] )
- );
- }
- break;
- case 'vn':
- state.normals.push(
- parseFloat( data[ 1 ] ),
- parseFloat( data[ 2 ] ),
- parseFloat( data[ 3 ] )
- );
- break;
- case 'vt':
- state.uvs.push(
- parseFloat( data[ 1 ] ),
- parseFloat( data[ 2 ] )
- );
- break;
- }
- } else if ( lineFirstChar === 'f' ) {
- var lineData = line.substr( 1 ).trim();
- var vertexData = lineData.split( /\s+/ );
- var faceVertices = [];
-
- for ( var j = 0, jl = vertexData.length; j < jl; j ++ ) {
- var vertex = vertexData[ j ];
- if ( vertex.length > 0 ) {
- var vertexParts = vertex.split( '/' );
- faceVertices.push( vertexParts );
- }
- }
-
- var v1 = faceVertices[ 0 ];
- for ( var j = 1, jl = faceVertices.length - 1; j < jl; j ++ ) {
- var v2 = faceVertices[ j ];
- var v3 = faceVertices[ j + 1 ];
- state.addFace(
- v1[ 0 ], v2[ 0 ], v3[ 0 ],
- v1[ 1 ], v2[ 1 ], v3[ 1 ],
- v1[ 2 ], v2[ 2 ], v3[ 2 ]
- );
- }
- } else if ( lineFirstChar === 'l' ) {
- var lineParts = line.substring( 1 ).trim().split( " " );
- var lineVertices = [], lineUVs = [];
- if ( line.indexOf( "/" ) === - 1 ) {
- lineVertices = lineParts;
- } else {
- for ( var li = 0, llen = lineParts.length; li < llen; li ++ ) {
- var parts = lineParts[ li ].split( "/" );
- if ( parts[ 0 ] !== "" ) lineVertices.push( parts[ 0 ] );
- if ( parts[ 1 ] !== "" ) lineUVs.push( parts[ 1 ] );
- }
- }
- state.addLineGeometry( lineVertices, lineUVs );
- } else if ( lineFirstChar === 'p' ) {
- var lineData = line.substr( 1 ).trim();
- var pointData = lineData.split( " " );
- state.addPointGeometry( pointData );
- } else if ( ( result = object_pattern.exec( line ) ) !== null ) {
-
-
-
-
-
- var name = ( " " + result[ 0 ].substr( 1 ).trim() ).substr( 1 );
- state.startObject( name );
- } else if ( material_use_pattern.test( line ) ) {
-
- state.object.startMaterial( line.substring( 7 ).trim(), state.materialLibraries );
- } else if ( material_library_pattern.test( line ) ) {
-
- state.materialLibraries.push( line.substring( 7 ).trim() );
- } else if ( lineFirstChar === 's' ) {
- result = line.split( ' ' );
-
-
-
-
-
-
-
-
- if ( result.length > 1 ) {
- var value = result[ 1 ].trim().toLowerCase();
- state.object.smooth = ( value !== '0' && value !== 'off' );
- } else {
-
- state.object.smooth = true;
- }
- var material = state.object.currentMaterial();
- if ( material ) material.smooth = state.object.smooth;
- } else {
-
- if ( line === '\0' ) continue;
- throw new Error( 'THREE.OBJLoader: Unexpected line: "' + line + '"' );
- }
- }
- state.finalize();
- var container = new THREE.Group();
- container.materialLibraries = [].concat( state.materialLibraries );
- for ( var i = 0, l = state.objects.length; i < l; i ++ ) {
- var object = state.objects[ i ];
- var geometry = object.geometry;
- var materials = object.materials;
- var isLine = ( geometry.type === 'Line' );
- var isPoints = ( geometry.type === 'Points' );
- var hasVertexColors = false;
-
- if ( geometry.vertices.length === 0 ) continue;
- var buffergeometry = new THREE.BufferGeometry();
- buffergeometry.addAttribute( 'position', new THREE.Float32BufferAttribute( geometry.vertices, 3 ) );
- if ( geometry.normals.length > 0 ) {
- buffergeometry.addAttribute( 'normal', new THREE.Float32BufferAttribute( geometry.normals, 3 ) );
- } else {
- buffergeometry.computeVertexNormals();
- }
- if ( geometry.colors.length > 0 ) {
- hasVertexColors = true;
- buffergeometry.addAttribute( 'color', new THREE.Float32BufferAttribute( geometry.colors, 3 ) );
- }
- if ( geometry.uvs.length > 0 ) {
- buffergeometry.addAttribute( 'uv', new THREE.Float32BufferAttribute( geometry.uvs, 2 ) );
- }
-
- var createdMaterials = [];
- for ( var mi = 0, miLen = materials.length; mi < miLen; mi ++ ) {
- var sourceMaterial = materials[ mi ];
- var material = undefined;
- if ( this.materials !== null ) {
- material = this.materials.create( sourceMaterial.name );
-
- if ( isLine && material && ! ( material instanceof THREE.LineBasicMaterial ) ) {
- var materialLine = new THREE.LineBasicMaterial();
- THREE.Material.prototype.copy.call( materialLine, material );
- materialLine.color.copy( material.color );
- materialLine.lights = false;
- material = materialLine;
- } else if ( isPoints && material && ! ( material instanceof THREE.PointsMaterial ) ) {
- var materialPoints = new THREE.PointsMaterial( { size: 10, sizeAttenuation: false } );
- THREE.Material.prototype.copy.call( materialPoints, material );
- materialPoints.color.copy( material.color );
- materialPoints.map = material.map;
- materialPoints.lights = false;
- material = materialPoints;
- }
- }
- if ( ! material ) {
- if ( isLine ) {
- material = new THREE.LineBasicMaterial();
- } else if ( isPoints ) {
- material = new THREE.PointsMaterial( { size: 1, sizeAttenuation: false } );
- } else {
- material = new THREE.MeshPhongMaterial();
- }
- material.name = sourceMaterial.name;
- }
- material.flatShading = sourceMaterial.smooth ? false : true;
- material.vertexColors = hasVertexColors ? THREE.VertexColors : THREE.NoColors;
- createdMaterials.push( material );
- }
-
- var mesh;
- if ( createdMaterials.length > 1 ) {
- for ( var mi = 0, miLen = materials.length; mi < miLen; mi ++ ) {
- var sourceMaterial = materials[ mi ];
- buffergeometry.addGroup( sourceMaterial.groupStart, sourceMaterial.groupCount, mi );
- }
- if ( isLine ) {
- mesh = new THREE.LineSegments( buffergeometry, createdMaterials );
- } else if ( isPoints ) {
- mesh = new THREE.Points( buffergeometry, createdMaterials );
- } else {
- mesh = new THREE.Mesh( buffergeometry, createdMaterials );
- }
- } else {
- if ( isLine ) {
- mesh = new THREE.LineSegments( buffergeometry, createdMaterials[ 0 ] );
- } else if ( isPoints ) {
- mesh = new THREE.Points( buffergeometry, createdMaterials[ 0 ] );
- } else {
- mesh = new THREE.Mesh( buffergeometry, createdMaterials[ 0 ] );
- }
- }
- mesh.name = object.name;
- container.add( mesh );
- }
- console.timeEnd( 'OBJLoader' );
- return container;
- }
- };
- return OBJLoader;
- } )();
|