/** * @author mrdoob / http://mrdoob.com/ */ THREE.OBJLoader = function ( manager ) { this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager; this.materials = null; }; THREE.OBJLoader.prototype = { constructor: THREE.OBJLoader, load: function ( url, onLoad, onProgress, onError ) { var scope = this; var loader = new THREE.XHRLoader( scope.manager ); loader.setCrossOrigin( this.crossOrigin ); loader.setPath( this.path ); loader.load( url, function ( text ) { onLoad( scope.parse( text ) ); }, onProgress, onError ); }, setCrossOrigin: function ( value ) { this.crossOrigin = value; }, setPath: function ( value ) { this.path = value; }, setMaterials: function ( materials ) { this.materials = materials; }, parse: function ( text ) { console.time( 'OBJLoader' ); var objects = []; var object; var foundObjects = false; var vertices = []; var normals = []; var uvs = []; function addObject(name) { var geometry = { vertices: [], normals: [], uvs: [] }; var material = { name: '', smooth: true }; object = { name: name, geometry: geometry, material: material }; objects.push( object ); } function parseVertexIndex( value ) { var index = parseInt( value ); return ( index >= 0 ? index - 1 : index + vertices.length / 3 ) * 3; } function parseNormalIndex( value ) { var index = parseInt( value ); return ( index >= 0 ? index - 1 : index + normals.length / 3 ) * 3; } function parseUVIndex( value ) { var index = parseInt( value ); return ( index >= 0 ? index - 1 : index + uvs.length / 2 ) * 2; } function addVertex( a, b, c ) { object.geometry.vertices.push( vertices[ a ], vertices[ a + 1 ], vertices[ a + 2 ], vertices[ b ], vertices[ b + 1 ], vertices[ b + 2 ], vertices[ c ], vertices[ c + 1 ], vertices[ c + 2 ] ); } function addNormal( a, b, c ) { object.geometry.normals.push( normals[ a ], normals[ a + 1 ], normals[ a + 2 ], normals[ b ], normals[ b + 1 ], normals[ b + 2 ], normals[ c ], normals[ c + 1 ], normals[ c + 2 ] ); } function addUV( a, b, c ) { object.geometry.uvs.push( uvs[ a ], uvs[ a + 1 ], uvs[ b ], uvs[ b + 1 ], uvs[ c ], uvs[ c + 1 ] ); } function addFace( a, b, c, d, ua, ub, uc, ud, na, nb, nc, nd ) { var ia = parseVertexIndex( a ); var ib = parseVertexIndex( b ); var ic = parseVertexIndex( c ); var id; if ( d === undefined ) { addVertex( ia, ib, ic ); } else { id = parseVertexIndex( d ); addVertex( ia, ib, id ); addVertex( ib, ic, id ); } if ( ua !== undefined ) { ia = parseUVIndex( ua ); ib = parseUVIndex( ub ); ic = parseUVIndex( uc ); if ( d === undefined ) { addUV( ia, ib, ic ); } else { id = parseUVIndex( ud ); addUV( ia, ib, id ); addUV( ib, ic, id ); } } if ( na !== undefined ) { ia = parseNormalIndex( na ); ib = parseNormalIndex( nb ); ic = parseNormalIndex( nc ); if ( d === undefined ) { addNormal( ia, ib, ic ); } else { id = parseNormalIndex( nd ); addNormal( ia, ib, id ); addNormal( ib, ic, id ); } } } addObject(""); // v float float float var vertex_pattern = /^v\s+([\d|\.|\+|\-|e|E]+)\s+([\d|\.|\+|\-|e|E]+)\s+([\d|\.|\+|\-|e|E]+)/; // vn float float float var normal_pattern = /^vn\s+([\d|\.|\+|\-|e|E]+)\s+([\d|\.|\+|\-|e|E]+)\s+([\d|\.|\+|\-|e|E]+)/; // vt float float var uv_pattern = /^vt\s+([\d|\.|\+|\-|e|E]+)\s+([\d|\.|\+|\-|e|E]+)/; // f vertex vertex vertex ... var face_pattern1 = /^f\s+(-?\d+)\s+(-?\d+)\s+(-?\d+)(?:\s+(-?\d+))?/; // f vertex/uv vertex/uv vertex/uv ... var face_pattern2 = /^f\s+((-?\d+)\/(-?\d+))\s+((-?\d+)\/(-?\d+))\s+((-?\d+)\/(-?\d+))(?:\s+((-?\d+)\/(-?\d+)))?/; // f vertex/uv/normal vertex/uv/normal vertex/uv/normal ... var face_pattern3 = /^f\s+((-?\d+)\/(-?\d+)\/(-?\d+))\s+((-?\d+)\/(-?\d+)\/(-?\d+))\s+((-?\d+)\/(-?\d+)\/(-?\d+))(?:\s+((-?\d+)\/(-?\d+)\/(-?\d+)))?/; // f vertex//normal vertex//normal vertex//normal ... var face_pattern4 = /^f\s+((-?\d+)\/\/(-?\d+))\s+((-?\d+)\/\/(-?\d+))\s+((-?\d+)\/\/(-?\d+))(?:\s+((-?\d+)\/\/(-?\d+)))?/; var object_pattern = /^[og]\s+(.+)/; var smoothing_pattern = /^s\s+([01]|on|off)/; // var lines = text.split( '\n' ); for ( var i = 0; i < lines.length; i ++ ) { var line = lines[ i ]; line = line.trim(); var result; if ( line.length === 0 || line.charAt( 0 ) === '#' ) { continue; } else if ( ( result = vertex_pattern.exec( line ) ) !== null ) { // ["v 1.0 2.0 3.0", "1.0", "2.0", "3.0"] vertices.push( parseFloat( result[ 1 ] ), parseFloat( result[ 2 ] ), parseFloat( result[ 3 ] ) ); } else if ( ( result = normal_pattern.exec( line ) ) !== null ) { // ["vn 1.0 2.0 3.0", "1.0", "2.0", "3.0"] normals.push( parseFloat( result[ 1 ] ), parseFloat( result[ 2 ] ), parseFloat( result[ 3 ] ) ); } else if ( ( result = uv_pattern.exec( line ) ) !== null ) { // ["vt 0.1 0.2", "0.1", "0.2"] uvs.push( parseFloat( result[ 1 ] ), parseFloat( result[ 2 ] ) ); } else if ( ( result = face_pattern1.exec( line ) ) !== null ) { // ["f 1 2 3", "1", "2", "3", undefined] addFace( result[ 1 ], result[ 2 ], result[ 3 ], result[ 4 ] ); } else if ( ( result = face_pattern2.exec( line ) ) !== null ) { // ["f 1/1 2/2 3/3", " 1/1", "1", "1", " 2/2", "2", "2", " 3/3", "3", "3", undefined, undefined, undefined] addFace( result[ 2 ], result[ 5 ], result[ 8 ], result[ 11 ], result[ 3 ], result[ 6 ], result[ 9 ], result[ 12 ] ); } else if ( ( result = face_pattern3.exec( line ) ) !== null ) { // ["f 1/1/1 2/2/2 3/3/3", " 1/1/1", "1", "1", "1", " 2/2/2", "2", "2", "2", " 3/3/3", "3", "3", "3", undefined, undefined, undefined, undefined] addFace( result[ 2 ], result[ 6 ], result[ 10 ], result[ 14 ], result[ 3 ], result[ 7 ], result[ 11 ], result[ 15 ], result[ 4 ], result[ 8 ], result[ 12 ], result[ 16 ] ); } else if ( ( result = face_pattern4.exec( line ) ) !== null ) { // ["f 1//1 2//2 3//3", " 1//1", "1", "1", " 2//2", "2", "2", " 3//3", "3", "3", undefined, undefined, undefined] addFace( result[ 2 ], result[ 5 ], result[ 8 ], result[ 11 ], undefined, undefined, undefined, undefined, result[ 3 ], result[ 6 ], result[ 9 ], result[ 12 ] ); } else if ( ( result = object_pattern.exec( line ) ) !== null ) { // o object_name // or // g group_name var name = result[1].trim(); if ( foundObjects === false ) { foundObjects = true; object.name = name; } else { addObject(name); } } else if ( /^usemtl /.test( line ) ) { // material object.material.name = line.substring( 7 ).trim(); } else if ( /^mtllib /.test( line ) ) { // mtl file } else if ( ( result = smoothing_pattern.exec( line ) ) !== null ) { // smooth shading object.material.smooth = result[ 1 ] === "1" || result[ 1 ] === "on"; } else { // console.log( "THREE.OBJLoader: Unhandled line " + line ); } } var container = new THREE.Group(); for ( var i = 0, l = objects.length; i < l; i ++ ) { object = objects[ i ]; var geometry = object.geometry; var buffergeometry = new THREE.BufferGeometry(); buffergeometry.addAttribute( 'position', new THREE.BufferAttribute( new Float32Array( geometry.vertices ), 3 ) ); if ( geometry.normals.length > 0 ) { buffergeometry.addAttribute( 'normal', new THREE.BufferAttribute( new Float32Array( geometry.normals ), 3 ) ); } else { buffergeometry.computeVertexNormals(); } if ( geometry.uvs.length > 0 ) { buffergeometry.addAttribute( 'uv', new THREE.BufferAttribute( new Float32Array( geometry.uvs ), 2 ) ); } var material; if ( this.materials !== null ) { material = this.materials.create( object.material.name ); } if ( !material ) { material = new THREE.MeshPhongMaterial(); material.name = object.material.name; } material.shading = object.material.smooth ? THREE.SmoothShading : THREE.FlatShading; var mesh = new THREE.Mesh( buffergeometry, material ); mesh.name = object.name; container.add( mesh ); } console.timeEnd( 'OBJLoader' ); return container; } };