constructor( parameters ) {

    		super();

    		this.type = 'SpriteMaterial';

    		this.color = new Color( 0xffffff );

    		this.map = null;

    		this.alphaMap = null;

    		this.rotation = 0;

    		this.sizeAttenuation = true;

    		this.transparent = true;

    		this.setValues( parameters );

    	}
parameters = {
 color: <hex>,
 map: new THREE.Texture( <Image> ),
 alphaMap: new THREE.Texture( <Image> ),
 rotation: <float>,
 sizeAttenuation: <bool>
}