如何用AS消除位图锯齿

http://www.cnblogs.com/bjsky/archive/2009/09/24/1573133.html

问：最近做了一个Flash的电子相册，遇到一个很棘手的问题，就是通过AS动态载入的图片在缩放的时候出现模糊和锯齿，由于这些位图是通过AS从外部载入进来的，不能在Flash制作时通过修改库里图片的属性来消除锯齿。所以求一个解决之法，小弟在此不胜感激了。

ycccc8202  (春叶飘零) 答：外部加载的可以通过bitmap来进行解决。主要用到MovieClip.attachBitmap中的一个smooth参数的设置，来进行平滑处理。

/*****进行消锯齿与不消锯齿的对比*****/ 
import flash.display.BitmapData; 
/*************加载******************/ 
var container1:MovieClip = createEmptyMovieClip("container1", getNextHighestDepth()); 
var container2:MovieClip = createEmptyMovieClip("container2", getNextHighestDepth()); 
var loader1:MovieClipLoader = new MovieClipLoader(); 
var loader2:MovieClipLoader = new MovieClipLoader(); 
var obj:Object = new Object(); 
obj.onLoadInit = function(target:MovieClip) { 
trace("onLoadInit"); 
loaderDispose(target); 
}; 
loader1.addListener(obj); 
loader1.loadClip("1.jpg", container1); 
loader2.addListener(obj); 
loader2.loadClip("1.jpg", container2); 
/**********图片处理***************/ 
var bitmapLoader1:MovieClip = createEmptyMovieClip("Bloader1", getNextHighestDepth()); 
var bitmapLoader2:MovieClip = createEmptyMovieClip("Bloader2", getNextHighestDepth()); 
var bitmap1:BitmapData; 
var bitmap2:BitmapData; 
function loaderDispose(mc:MovieClip) { 
mc._visible = false; 
/*******不平滑*******/ 
if (mc._name == "container1") { 
  bitmap1 = new BitmapData(mc._width, mc._height, true, 0x00FFFFFF); 
  bitmap1.draw(mc); 
  bitmapLoader1.attachBitmap(bitmap1, 0); 
  bitmapLoader1._x = -50; 
  bitmapLoader1._xscale = bitmapLoader1._yscale=250; 
} else { 
  /******平滑处理*******/ 
  bitmap2 = new BitmapData(mc._width, mc._height, true, 0x00FFFFFF); 
  bitmap2.draw(mc); 
  bitmapLoader2.attachBitmap(bitmap2, 1, "auto", true); 
  //主要就是这个smooth参数，true表示平滑 
  bitmapLoader1._x = -50; 
  bitmapLoader2._y = 300; 
  bitmapLoader2._xscale = bitmapLoader2._yscale=250; 
} 
}