 		public static const LOCAL_TO_SCREEN				: String = 'localToScreen';
 		public static const LOCAL_TO_UV					: String = 'localToUv';
 		
+		public static const GLOBAL_TO_SCREEN			: String = 'globalToScreen';
+		
 		protected var _world							: Matrix4x4;
 		protected var _view								: Matrix4x4;
 		protected var _projection						: Matrix4x4;

			_localToView_worldVersion			= uint.MAX_VALUE;
			_localToScreen_localToViewVersion	= uint.MAX_VALUE;
			_localToScreen_projectionVersion	= uint.MAX_VALUE;
		}
	}
}
		
		protected var _localToUv						: Matrix4x4;
		protected var _localToUv_localToScreenVersion	: uint;
		
		protected var _globalToScreen					: Matrix4x4;
		protected var _globalToScreen_viewVersion		: uint;
		protected var _globalToScreen_projectionVersion	: uint;
		
		public function get view() : Matrix4x4
		{
