該篇主要介紹了圖片加載以及顯示對象遮罩效果,通過URLRequest鏈接圖片地址,然後用Loader對象加載圖片。
package
{
import flash.display.Bitmap;
import flash.display.BitmapData;
import flash.display.Loader;
import flash.display.Sprite;
import flash.events.Event;
import flash.filters.BitmapFilterQuality;
import flash.filters.BlurFilter;
import flash.net.URLRequest;
public class BitmapLearn extends Sprite
{
private var _bitmap:Bitmap;
private var _circleMask:Sprite;
public function BitmapLearn()
{
initMask();
startLoadImg();
}
private function initMask():void
{
_circleMask = new Sprite();
_circleMask.graphics.beginFill(0xff0000);
_circleMask.graphics.drawCircle(60, 60, 60);
_circleMask.graphics.endFill();
_circleMask.filters = [new BlurFilter(20, 20, BitmapFilterQuality.HIGH)];
_circleMask.cacheAsBitmap = true;
addChild(_circleMask);
_circleMask.startDrag(true);
}
private function loaded(evt:Event):void
{
_bitmap = evt.target.content as Bitmap;
addChild(_bitmap);
_bitmap.cacheAsBitmap = true;
_bitmap.mask = _circleMask;
//addChild(evt.target.content);
}
private function startLoadImg():void
{
var loader:Loader = new Loader();
var request:URLRequest = new URLRequest("tupian.jpg"); //("C:/Users/xxx/Desktop/tupian.jpg") 注意此處爲反斜線
loader.load(request);
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, loaded); // LoaderInfo 對象提供有關加載的文件的加載進度信息和統計。
}
}
}
運行效果如下: