source: other-projects/playing-in-the-street/summer-2013/trunk/Playing-in-the-Street-WPF/Content/Web/mrdoob-three.js-4862f5f/src/objects/ParticleSystem.js@ 28897

/**
 * @author alteredq / http://alteredqualia.com/
 */

THREE.ParticleSystem = function ( geometry, material ) {

    THREE.Object3D.call( this );

    this.geometry = geometry !== undefined ? geometry : new THREE.Geometry();
    this.material = material !== undefined ? material : new THREE.ParticleSystemMaterial( { color: Math.random() * 0xffffff } );

    this.sortParticles = false;
    this.frustumCulled = false;

};

THREE.ParticleSystem.prototype = Object.create( THREE.Object3D.prototype );

THREE.ParticleSystem.prototype.clone = function ( object ) {

    if ( object === undefined ) object = new THREE.ParticleSystem( this.geometry, this.material );

    object.sortParticles = this.sortParticles;

    THREE.Object3D.prototype.clone.call( this, object );

    return object;

};