ActionScript 3 动态获取位图数据

Posted 2021-05-23

public static function getBitmapData(target:DisplayObjectContainer) : BitmapData
{
     var bounds : Rectangle = new Rectangle();
     bounds = target.getBounds(target);
     var matrix : Matrix = new Matrix(1, 0, 0, 1, 0 - bounds.x, 0 - bounds.y);
     matrix.scale(1, 1);
     //for png data set the transparent to true, otherwise just leave as false
     var bmd : BitmapData = new BitmapData(bounds.width, bounds.height, true);  
     bmd.draw(target, matrix, null, null, null, true);
     return bmd;
}