432 lines
9.7 KiB
JavaScript
432 lines
9.7 KiB
JavaScript
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/**
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* @author mrdoob / http://mrdoob.com/
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*/
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THREE.OBJLoader = function ( manager ) {
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this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
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};
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THREE.OBJLoader.prototype = {
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constructor: THREE.OBJLoader,
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load: function ( url, onLoad, onProgress, onError ) {
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var scope = this;
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var loader = new THREE.XHRLoader( scope.manager );
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loader.setCrossOrigin( this.crossOrigin );
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loader.load( url, function ( text ) {
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onLoad( scope.parse( text ) );
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} );
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},
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parse: function ( text ) {
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function vector( x, y, z ) {
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return new THREE.Vector3( x, y, z );
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}
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function uv( u, v ) {
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return new THREE.Vector2( u, v );
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}
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function face3( a, b, c, normals ) {
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return new THREE.Face3( a, b, c, normals );
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}
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var object = new THREE.Object3D();
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var geometry, material, mesh;
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// create mesh if no objects in text
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if ( /^o /gm.test( text ) === false ) {
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geometry = new THREE.Geometry();
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material = new THREE.MeshLambertMaterial();
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mesh = new THREE.Mesh( geometry, material );
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object.add( mesh );
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}
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var vertices = [];
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var verticesCount = 0;
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var normals = [];
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var uvs = [];
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// v float float float
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var vertex_pattern = /v( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)/;
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// vn float float float
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var normal_pattern = /vn( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)/;
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// vt float float
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var uv_pattern = /vt( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)/;
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// f vertex vertex vertex ...
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var face_pattern1 = /f( +\d+)( +\d+)( +\d+)( +\d+)?/;
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// f vertex/uv vertex/uv vertex/uv ...
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var face_pattern2 = /f( +(\d+)\/(\d+))( +(\d+)\/(\d+))( +(\d+)\/(\d+))( +(\d+)\/(\d+))?/;
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// f vertex/uv/normal vertex/uv/normal vertex/uv/normal ...
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var face_pattern3 = /f( +(\d+)\/(\d+)\/(\d+))( +(\d+)\/(\d+)\/(\d+))( +(\d+)\/(\d+)\/(\d+))( +(\d+)\/(\d+)\/(\d+))?/;
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// f vertex//normal vertex//normal vertex//normal ...
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var face_pattern4 = /f( +(\d+)\/\/(\d+))( +(\d+)\/\/(\d+))( +(\d+)\/\/(\d+))( +(\d+)\/\/(\d+))?/
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//
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var lines = text.split( '\n' );
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for ( var i = 0; i < lines.length; i ++ ) {
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var line = lines[ i ];
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line = line.trim();
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var result;
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if ( line.length === 0 || line.charAt( 0 ) === '#' ) {
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continue;
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} else if ( ( result = vertex_pattern.exec( line ) ) !== null ) {
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// ["v 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
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vertices.push( vector(
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parseFloat( result[ 1 ] ),
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parseFloat( result[ 2 ] ),
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parseFloat( result[ 3 ] )
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) );
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} else if ( ( result = normal_pattern.exec( line ) ) !== null ) {
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// ["vn 1.0 2.0 3.0", "1.0", "2.0", "3.0"]
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normals.push( vector(
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parseFloat( result[ 1 ] ),
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parseFloat( result[ 2 ] ),
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parseFloat( result[ 3 ] )
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) );
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} else if ( ( result = uv_pattern.exec( line ) ) !== null ) {
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// ["vt 0.1 0.2", "0.1", "0.2"]
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uvs.push( uv(
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parseFloat( result[ 1 ] ),
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parseFloat( result[ 2 ] )
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) );
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} else if ( ( result = face_pattern1.exec( line ) ) !== null ) {
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// ["f 1 2 3", "1", "2", "3", undefined]
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if ( result[ 4 ] === undefined ) {
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geometry.vertices.push(
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vertices[ parseInt( result[ 1 ] ) - 1 ],
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vertices[ parseInt( result[ 2 ] ) - 1 ],
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vertices[ parseInt( result[ 3 ] ) - 1 ]
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);
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geometry.faces.push( face3(
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verticesCount ++,
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verticesCount ++,
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verticesCount ++
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) );
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} else {
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geometry.vertices.push(
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vertices[ parseInt( result[ 1 ] ) - 1 ],
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vertices[ parseInt( result[ 2 ] ) - 1 ],
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vertices[ parseInt( result[ 3 ] ) - 1 ],
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vertices[ parseInt( result[ 4 ] ) - 1 ]
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);
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geometry.faces.push( face3(
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verticesCount,
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verticesCount + 1,
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verticesCount + 3
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) );
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geometry.faces.push( face3(
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verticesCount + 1,
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verticesCount + 2,
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verticesCount + 3
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) );
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verticesCount += 4;
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}
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} else if ( ( result = face_pattern2.exec( line ) ) !== null ) {
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// ["f 1/1 2/2 3/3", " 1/1", "1", "1", " 2/2", "2", "2", " 3/3", "3", "3", undefined, undefined, undefined]
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if ( result[ 10 ] === undefined ) {
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geometry.vertices.push(
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vertices[ parseInt( result[ 2 ] ) - 1 ],
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vertices[ parseInt( result[ 5 ] ) - 1 ],
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vertices[ parseInt( result[ 8 ] ) - 1 ]
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);
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geometry.faces.push( face3(
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verticesCount ++,
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verticesCount ++,
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verticesCount ++
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) );
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geometry.faceVertexUvs[ 0 ].push( [
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uvs[ parseInt( result[ 3 ] ) - 1 ],
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uvs[ parseInt( result[ 6 ] ) - 1 ],
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uvs[ parseInt( result[ 9 ] ) - 1 ]
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] );
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} else {
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geometry.vertices.push(
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vertices[ parseInt( result[ 2 ] ) - 1 ],
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vertices[ parseInt( result[ 5 ] ) - 1 ],
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vertices[ parseInt( result[ 8 ] ) - 1 ],
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vertices[ parseInt( result[ 11 ] ) - 1 ]
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);
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geometry.faces.push( face3(
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verticesCount,
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verticesCount + 1,
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verticesCount + 3
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) );
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geometry.faceVertexUvs[ 0 ].push( [
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uvs[ parseInt( result[ 3 ] ) - 1 ],
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uvs[ parseInt( result[ 6 ] ) - 1 ],
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uvs[ parseInt( result[ 12 ] ) - 1 ]
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] );
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geometry.faces.push( face3(
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verticesCount + 1,
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verticesCount + 2,
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verticesCount + 3
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) );
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geometry.faceVertexUvs[ 0 ].push( [
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uvs[ parseInt( result[ 6 ] ) - 1 ],
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uvs[ parseInt( result[ 9 ] ) - 1 ],
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uvs[ parseInt( result[ 12 ] ) - 1 ]
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] );
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verticesCount += 4;
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}
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} else if ( ( result = face_pattern3.exec( line ) ) !== null ) {
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// ["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]
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if ( result[ 13 ] === undefined ) {
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geometry.vertices.push(
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vertices[ parseInt( result[ 2 ] ) - 1 ],
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vertices[ parseInt( result[ 6 ] ) - 1 ],
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vertices[ parseInt( result[ 10 ] ) - 1 ]
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);
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geometry.faces.push( face3(
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verticesCount ++,
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verticesCount ++,
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verticesCount ++,
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[
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normals[ parseInt( result[ 4 ] ) - 1 ],
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normals[ parseInt( result[ 8 ] ) - 1 ],
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normals[ parseInt( result[ 12 ] ) - 1 ]
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]
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) );
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geometry.faceVertexUvs[ 0 ].push( [
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uvs[ parseInt( result[ 3 ] ) - 1 ],
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uvs[ parseInt( result[ 7 ] ) - 1 ],
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uvs[ parseInt( result[ 11 ] ) - 1 ]
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] );
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} else {
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geometry.vertices.push(
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vertices[ parseInt( result[ 2 ] ) - 1 ],
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vertices[ parseInt( result[ 6 ] ) - 1 ],
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vertices[ parseInt( result[ 10 ] ) - 1 ],
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vertices[ parseInt( result[ 14 ] ) - 1 ]
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);
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geometry.faces.push( face3(
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verticesCount,
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verticesCount + 1,
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verticesCount + 3,
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[
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normals[ parseInt( result[ 4 ] ) - 1 ],
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normals[ parseInt( result[ 8 ] ) - 1 ],
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normals[ parseInt( result[ 16 ] ) - 1 ]
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]
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) );
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geometry.faceVertexUvs[ 0 ].push( [
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uvs[ parseInt( result[ 3 ] ) - 1 ],
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uvs[ parseInt( result[ 7 ] ) - 1 ],
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uvs[ parseInt( result[ 15 ] ) - 1 ]
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] );
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geometry.faces.push( face3(
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verticesCount + 1,
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verticesCount + 2,
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verticesCount + 3,
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[
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normals[ parseInt( result[ 8 ] ) - 1 ],
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normals[ parseInt( result[ 12 ] ) - 1 ],
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normals[ parseInt( result[ 16 ] ) - 1 ]
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]
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) );
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geometry.faceVertexUvs[ 0 ].push( [
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uvs[ parseInt( result[ 7 ] ) - 1 ],
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uvs[ parseInt( result[ 11 ] ) - 1 ],
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uvs[ parseInt( result[ 15 ] ) - 1 ]
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] );
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verticesCount += 4;
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}
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} else if ( ( result = face_pattern4.exec( line ) ) !== null ) {
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// ["f 1//1 2//2 3//3", " 1//1", "1", "1", " 2//2", "2", "2", " 3//3", "3", "3", undefined, undefined, undefined]
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if ( result[ 10 ] === undefined ) {
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geometry.vertices.push(
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vertices[ parseInt( result[ 2 ] ) - 1 ],
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vertices[ parseInt( result[ 5 ] ) - 1 ],
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vertices[ parseInt( result[ 8 ] ) - 1 ]
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);
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geometry.faces.push( face3(
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verticesCount ++,
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verticesCount ++,
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verticesCount ++,
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[
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normals[ parseInt( result[ 3 ] ) - 1 ],
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normals[ parseInt( result[ 6 ] ) - 1 ],
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normals[ parseInt( result[ 9 ] ) - 1 ]
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]
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) );
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} else {
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geometry.vertices.push(
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vertices[ parseInt( result[ 2 ] ) - 1 ],
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vertices[ parseInt( result[ 5 ] ) - 1 ],
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vertices[ parseInt( result[ 8 ] ) - 1 ],
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vertices[ parseInt( result[ 11 ] ) - 1 ]
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);
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geometry.faces.push( face3(
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verticesCount,
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verticesCount + 1,
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verticesCount + 3,
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[
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normals[ parseInt( result[ 3 ] ) - 1 ],
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normals[ parseInt( result[ 6 ] ) - 1 ],
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normals[ parseInt( result[ 12 ] ) - 1 ]
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]
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) );
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geometry.faces.push( face3(
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verticesCount + 1,
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verticesCount + 2,
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verticesCount + 3,
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[
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normals[ parseInt( result[ 6 ] ) - 1 ],
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normals[ parseInt( result[ 9 ] ) - 1 ],
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normals[ parseInt( result[ 12 ] ) - 1 ]
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]
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) );
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verticesCount += 4;
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}
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} else if ( /^o /.test( line ) ) {
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// object
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geometry = new THREE.Geometry();
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material = new THREE.MeshLambertMaterial();
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mesh = new THREE.Mesh( geometry, material );
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mesh.name = line.substring( 2 ).trim();
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object.add( mesh );
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verticesCount = 0;
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} else if ( /^g /.test( line ) ) {
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// group
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} else if ( /^usemtl /.test( line ) ) {
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// material
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material.name = line.substring( 7 ).trim();
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} else if ( /^mtllib /.test( line ) ) {
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// mtl file
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} else if ( /^s /.test( line ) ) {
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// smooth shading
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} else {
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// console.log( "THREE.OBJLoader: Unhandled line " + line );
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}
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}
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for ( var i = 0, l = object.children.length; i < l; i ++ ) {
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var geometry = object.children[ i ].geometry;
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geometry.computeCentroids();
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geometry.computeFaceNormals();
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geometry.computeBoundingSphere();
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}
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return object;
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}
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};
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