flash笔记之抠图

package{import flash.display.Bitmap;import flash.display.BitmapData;import flash.display.Sprite;import flash.geom.Point;import flash.geom.Rectangle;public class getColorBoundsRect extends Sprite {private var nb:BitmapData;public function getColorBoundsRect(){var bmd:BitmapData = new BitmapData(80, 40, false, 0xFFFFcc);var rect:Rectangle = new Rectangle(0, 0, 80, 20);bmd.fillRect(rect, 0x3168D5);var bm11:Bitmap = new Bitmap(bmd);addChild(bm11);var maskColor:uint = 0xFFFFFF; var color:uint = 0x3168D5; //如果该值设置为 true，则返回color图像中颜色值的范围。 var redBounds1:Rectangle = bmd.getColorBoundsRect(maskColor, color, true);trace(redBounds1); // (x=0, y=0, w=80, h=20)var bitmapData:BitmapData = new BitmapData(redBounds1.width,redBounds1.height,true);bitmapData.copyPixels(bmd, redBounds1, new Point(0,0));var bm:Bitmap = new Bitmap(bitmapData);bm.x =bm.y=100;addChild(bm);//如果该值设置为 false，则还回0x3168D5以外的区域 ARGB 颜色var notRedBounds:Rectangle = bmd.getColorBoundsRect(maskColor, color, false);trace(notRedBounds); // (x=0, y=20, w=80, h=20)var bitmapData2:BitmapData = new BitmapData(notRedBounds.width,notRedBounds.height,true);bitmapData2.copyPixels(bmd, notRedBounds, new Point(0,0));var bm1:Bitmap = new Bitmap(bitmapData2);bm1.x =bm1.y=200;addChild(bm1);}}}

package{import flash.display.Bitmap;import flash.display.BitmapData;import flash.display.Loader;import flash.display.Sprite;import flash.display.StageAlign;import flash.display.StageScaleMode;import flash.events.Event;import flash.geom.Point;import flash.geom.Rectangle;import flash.net.URLRequest;public class getColorBoundsRectPNG extends Sprite{private var _loader:Loader = new Loader( );public function getColorBoundsRectPNG( ) {stage.align = StageAlign.TOP_LEFT;stage.scaleMode = StageScaleMode.NO_SCALE;_loader.contentLoaderInfo.addEventListener(Event.COMPLETE, onComplete);_loader.load(new URLRequest("p_1.png"));}public function onComplete(event:Event):void {var image:Bitmap = Bitmap(_loader.content);addChild(image);var srcBitmapData:BitmapData = image.bitmapData;//如果该值设置为 false，则还回0x00000000（白色透明值）以外的区域 ARGB 颜色var srcRectangle:Rectangle = srcBitmapData.getColorBoundsRect(0xFF000000, 0x00000000, false);var dstBitmapData:BitmapData = new BitmapData(srcRectangle.width,srcRectangle.height,true);dstBitmapData.copyPixels(srcBitmapData, srcRectangle, new Point(0,0));var dstBitmap:Bitmap = new Bitmap(dstBitmapData);trace(dstBitmap.width,dstBitmap.height);addChild(dstBitmap);}}}