[AS3] flash.filter.ColorMatrixFilter(matrix) - matrix變形矩陣改變對比(contrast)

原圖：

參考此篇處理方式：
UNDERSTANDING AS3 COLORMATRIXFILTER CLASS

● 提高點陣圖對比(contrast)

991223_ColorMF_contrast1.swf

package  {
 import flash.display.Sprite;
 import flash.filters.ColorMatrixFilter;
 import flash.display.BitmapData;
 import flash.display.Bitmap;
 import flash.display.DisplayObject;
 //
 public class ColorMF_contrast1_991223 extends Sprite{
  public var bmd:BitmapData = new MyPhoto(0,0);
  public var bm:Bitmap = new Bitmap(bmd);
  public function ColorMF_contrast1_991223() {
   addChild(bm);
   var matrix:Array = new Array();
   matrix = matrix.concat([2, 0, 0, 0, -40]); //RED Channel
   matrix = matrix.concat([0, 2, 0, 0, -40]); //GREEN Channel
   matrix = matrix.concat([0, 0, 2, 0, -40]); //BLUE Channel
   matrix = matrix.concat([0, 0, 0, 1, 0]); //ALPHA Channel
   var myFilter:ColorMatrixFilter = new ColorMatrixFilter(matrix);
   bm.filters = [myFilter];
  }

 }
}