function SpriteHelper(object, hex) 
{
	Sprite.call(this, new SpriteMaterial(
		{color: hex !== undefined ? hex : 0xFFFFFF}));

	/**
	 * Object attached to the helper
	 *
	 * @attribute object
	 * @type {Object3D}
	 */
	this.object = object;
	
	this.matrixAutoUpdate = false;
	this.update();
}
Sprite helper is used to preview sprite objects.

@class SpriteHelper
@param {Object3D} object
@param {number} hex Helper color in hexadecimal.