public class @ax-graphic-flex-image-effects-10-Flex-Alien extends Sprite {
  
                  // controls the amount of movement visible in the flames that are generated
                  private static const FLICKER_RATE:Number = 10;
  
                  private var _flame:BitmapData;
                  private var _perlinNoise:BitmapData;
                  private var _perlinOffsets:Array;
                  private var _perlinSeed:int;
                  private var _video:graphic_flex_image_effects_10_Flex_VideoLoader;
                  private var _filteredScreen:Bitmap;
                  private var _shaderEffect:graphic_flex_image_effects_10_Flex_IsolateColorEffect;