/**
* Loads a Wavefront .obj file with materials
*
* @author mrdoob / http://mrdoob.com/
* @author angelxuanchang
*/
THREE.OBJMTLLoader = function ( manager ) {
this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
};
THREE.OBJMTLLoader.prototype = {
constructor: THREE.OBJMTLLoader,
load: function ( url, mtlurl, onLoad, onProgress, onError ) {
var scope = this;
var mtlLoader = new THREE.MTLLoader( url.substr( 0, url.lastIndexOf( "/" ) + 1 ) );
mtlLoader.load( mtlurl, function ( materials ) {
var materialsCreator = materials;
materialsCreator.preload();
var loader = new THREE.XHRLoader( scope.manager );
loader.setCrossOrigin( this.crossOrigin );
loader.load( url, function ( text ) {
var object = scope.parse( text );
object.traverse( function ( object ) {
if ( object instanceof THREE.Mesh ) {
if ( object.material.name ) {
var material = materialsCreator.create( object.material.name );
if ( material ) object.material = material;
}
}
} );
onLoad( object );
}, onProgress, onError );
}, onProgress, onError );
},
/**
* Parses loaded .obj file
* @param data - content of .obj file
* @param mtllibCallback - callback to handle mtllib declaration (optional)
* @return {THREE.Object3D} - Object3D (with default material)
*/
parse: function ( data, mtllibCallback ) {
function vector( x, y, z ) {
return new THREE.Vector3( x, y, z );
}
function uv( u, v ) {
return new THREE.Vector2( u, v );
}
function face3( a, b, c, normals ) {
return new THREE.Face3( a, b, c, normals );
}
var face_offset = 0;
function meshN( meshName, materialName ) {
if ( vertices.length > 0 ) {
geometry.vertices = vertices;
geometry.mergeVertices();
geometry.computeFaceNormals();
geometry.computeBoundingSphere();
object.add( mesh );
geometry = new THREE.Geometry();
mesh = new THREE.Mesh( geometry, material );
}
if ( meshName !== undefined ) mesh.name = meshName;
if ( materialName !== undefined ) {
material = new THREE.MeshLambertMaterial();
material.name = materialName;
mesh.material = material;
}
}
var group = new THREE.Group();
var object = group;
var geometry = new THREE.Geometry();
var material = new THREE.MeshLambertMaterial();
var mesh = new THREE.Mesh( geometry, material );
var vertices = [];
var normals = [];
var uvs = [];
function add_face( a, b, c, normals_inds ) {
if ( normals_inds === undefined ) {
geometry.faces.push( face3(
parseInt( a ) - (face_offset + 1),
parseInt( b ) - (face_offset + 1),
parseInt( c ) - (face_offset + 1)
) );
} else {
geometry.faces.push( face3(
parseInt( a ) - (face_offset + 1),
parseInt( b ) - (face_offset + 1),
parseInt( c ) - (face_offset + 1),
[
normals[ parseInt( normals_inds[ 0 ] ) - 1 ].clone(),
normals[ parseInt( normals_inds[ 1 ] ) - 1 ].clone(),
normals[ parseInt( normals_inds[ 2 ] ) - 1 ].clone()
]
) );
}
}
function add_uvs( a, b, c ) {
geometry.faceVertexUvs[ 0 ].push( [
uvs[ parseInt( a ) - 1 ].clone(),
uvs[ parseInt( b ) - 1 ].clone(),
uvs[ parseInt( c ) - 1 ].clone()
] );
}
function handle_face_line(faces, uvs, normals_inds) {
if ( faces[ 3 ] === undefined ) {
add_face( faces[ 0 ], faces[ 1 ], faces[ 2 ], normals_inds );
if (!(uvs === undefined) && uvs.length > 0) {
add_uvs( uvs[ 0 ], uvs[ 1 ], uvs[ 2 ] );
}
} else {
if (!(normals_inds === undefined) && normals_inds.length > 0) {
add_face( faces[ 0 ], faces[ 1 ], faces[ 3 ], [ normals_inds[ 0 ], normals_inds[ 1 ], normals_inds[ 3 ] ]);
add_face( faces[ 1 ], faces[ 2 ], faces[ 3 ], [ normals_inds[ 1 ], normals_inds[ 2 ], normals_inds[ 3 ] ]);
} else {
add_face( faces[ 0 ], faces[ 1 ], faces[ 3 ]);
add_face( faces[ 1 ], faces[ 2 ], faces[ 3 ]);
}
if (!(uvs === undefined) && uvs.length > 0) {
add_uvs( uvs[ 0 ], uvs[ 1 ], uvs[ 3 ] );
add_uvs( uvs[ 1 ], uvs[ 2 ], uvs[ 3 ] );
}
}
}
// v float float float
var vertex_pattern = /v( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)/;
// vn float float float
var normal_pattern = /vn( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)/;
// vt float float
var uv_pattern = /vt( +[\d|\.|\+|\-|e]+)( +[\d|\.|\+|\-|e]+)/;
// f vertex vertex vertex ...
var face_pattern1 = /f( +\d+)( +\d+)( +\d+)( +\d+)?/;
// f vertex/uv vertex/uv vertex/uv ...
var face_pattern2 = /f( +(\d+)\/(\d+))( +(\d+)\/(\d+))( +(\d+)\/(\d+))( +(\d+)\/(\d+))?/;
// f vertex/uv/normal vertex/uv/normal vertex/uv/normal ...
var face_pattern3 = /f( +(\d+)\/(\d+)\/(\d+))( +(\d+)\/(\d+)\/(\d+))( +(\d+)\/(\d+)\/(\d+))( +(\d+)\/(\d+)\/(\d+))?/;
// f vertex//normal vertex//normal vertex//normal ...
var face_pattern4 = /f( +(\d+)\/\/(\d+))( +(\d+)\/\/(\d+))( +(\d+)\/\/(\d+))( +(\d+)\/\/(\d+))?/
//
var lines = data.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( vector(
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( vector(
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( uv(
parseFloat( result[ 1 ] ),
parseFloat( result[ 2 ] )
) );
} else if ( ( result = face_pattern1.exec( line ) ) !== null ) {
// ["f 1 2 3", "1", "2", "3", undefined]
handle_face_line([ 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]
handle_face_line(
[ result[ 2 ], result[ 5 ], result[ 8 ], result[ 11 ] ], //faces
[ result[ 3 ], result[ 6 ], result[ 9 ], result[ 12 ] ] //uv
);
} 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]
handle_face_line(
[ result[ 2 ], result[ 6 ], result[ 10 ], result[ 14 ] ], //faces
[ result[ 3 ], result[ 7 ], result[ 11 ], result[ 15 ] ], //uv
[ result[ 4 ], result[ 8 ], result[ 12 ], result[ 16 ] ] //normal
);
} 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]
handle_face_line(
[ result[ 2 ], result[ 5 ], result[ 8 ], result[ 11 ] ], //faces
[ ], //uv
[ result[ 3 ], result[ 6 ], result[ 9 ], result[ 12 ] ] //normal
);
} else if ( /^o /.test( line ) ) {
// object
meshN();
face_offset = face_offset + vertices.length;
vertices = [];
object = new THREE.Object3D();
object.name = line.substring( 2 ).trim();
group.add( object );
} else if ( /^g /.test( line ) ) {
// group
meshN( line.substring( 2 ).trim(), undefined );
} else if ( /^usemtl /.test( line ) ) {
// material
meshN( undefined, line.substring( 7 ).trim() );
} else if ( /^mtllib /.test( line ) ) {
// mtl file
if ( mtllibCallback ) {
var mtlfile = line.substring( 7 );
mtlfile = mtlfile.trim();
mtllibCallback( mtlfile );
}
} else if ( /^s /.test( line ) ) {
// Smooth shading
} else {
console.log( "THREE.OBJMTLLoader: Unhandled line " + line );
}
}
//Add last object
meshN(undefined, undefined);
return group;
}
};
THREE.EventDispatcher.prototype.apply( THREE.OBJMTLLoader.prototype );