Doodle3D-Slicer/three.js-master/examples/js/loaders/VTKLoader.js
2015-06-12 15:58:26 +02:00

84 lines
1.9 KiB
JavaScript
Executable File

/**
* @author mrdoob / http://mrdoob.com/
*/
THREE.VTKLoader = function ( manager ) {
this.manager = ( manager !== undefined ) ? manager : THREE.DefaultLoadingManager;
};
THREE.VTKLoader.prototype = {
constructor: THREE.VTKLoader,
load: function ( url, onLoad, onProgress, onError ) {
var scope = this;
var loader = new THREE.XHRLoader( scope.manager );
loader.setCrossOrigin( this.crossOrigin );
loader.load( url, function ( text ) {
onLoad( scope.parse( text ) );
}, onProgress, onError );
},
parse: function ( data ) {
var indices = [];
var positions = [];
var pattern, result;
// float float float
pattern = /([\+|\-]?[\d]+[\.][\d|\-|e]+)[ ]+([\+|\-]?[\d]+[\.][\d|\-|e]+)[ ]+([\+|\-]?[\d]+[\.][\d|\-|e]+)/g;
while ( ( result = pattern.exec( data ) ) !== null ) {
// ["1.0 2.0 3.0", "1.0", "2.0", "3.0"]
positions.push( parseFloat( result[ 1 ] ), parseFloat( result[ 2 ] ), parseFloat( result[ 3 ] ) );
}
// 3 int int int
pattern = /3[ ]+([\d]+)[ ]+([\d]+)[ ]+([\d]+)/g;
while ( ( result = pattern.exec( data ) ) !== null ) {
// ["3 1 2 3", "1", "2", "3"]
indices.push( parseInt( result[ 1 ] ), parseInt( result[ 2 ] ), parseInt( result[ 3 ] ) );
}
// 4 int int int int
pattern = /4[ ]+([\d]+)[ ]+([\d]+)[ ]+([\d]+)[ ]+([\d]+)/g;
while ( ( result = pattern.exec( data ) ) !== null ) {
// ["4 1 2 3 4", "1", "2", "3", "4"]
indices.push( parseInt( result[ 1 ] ), parseInt( result[ 2 ] ), parseInt( result[ 4 ] ) );
indices.push( parseInt( result[ 2 ] ), parseInt( result[ 3 ] ), parseInt( result[ 4 ] ) );
}
var geometry = new THREE.BufferGeometry();
geometry.addAttribute( 'index', new THREE.BufferAttribute( new ( indices.length > 65535 ? Uint32Array : Uint16Array )( indices ), 1 ) );
geometry.addAttribute( 'position', new THREE.BufferAttribute( new Float32Array( positions ), 3 ) );
return geometry;
}
};
THREE.EventDispatcher.prototype.apply( THREE.VTKLoader.prototype );