在Flash中使用AS3.0將圖片水平反轉

package flashAs {

import flash.display.BitmapData;

import flash.geom.Matrix;

//具有圖片反轉功能的類別

public class ImageRotation extends Sprite{

private var matrix:Matrix;

private var sourceBD:BitmapData;

//建構子, 設定圖片來源和座標

public function ImageRotation (BD:BitmapData, X:int, Y:int){

sourceBD= BD;

this.x = X; this.y = Y;

//--設定變型矩陣的物件

matrix = new Matrix();

matrix.a=-1;

matrix.b = Math.sin( (180/180) * Math.PI);

matrix.tx= sourceBD.width;

this. goRecovery();

}

//進行水平反轉

public function goRotation (){

this.graphics.clear();

this.graphics.beginBitmapFill(sourceBD, matrix, false);

this.graphics.drawRect(0, 0, sourceBD.width, sourceBD.height);

this.graphics.endFill();

}

//恢復原始圖片

public function goRecovery(){

this.graphics.clear();

this.graphics.beginBitmapFill(sourceBD);

this.graphics.drawRect(0, 0, sourceBD.width, sourceBD.height);

}

}

}