private function createRef(p_source:Bitmap):BitmapData//制作倒影bitmapData
{
var bd:BitmapData=new BitmapData(p_source.width, p_source.height, true, 0);
var mtx:Matrix = new Matrix();
mtx.d=-1;
mtx.ty=bd.height;
bd.draw(p_source, mtx);
var width:int=bd.width;
var height:int=bd.height;
mtx=new Matrix();
mtx.createGradientBox(width, height, 0.5 * Math.PI);
var shape:Shape = new Shape();
shape.graphics.beginGradientFill(GradientType.LINEAR, [0, 0], [0.9, 0.2], [0, 0xFF], mtx)
shape.graphics.drawRect(0, 0, width, height);
shape.graphics.endFill();
var mask_bd:BitmapData=new BitmapData(width, height, true, 0);
mask_bd.draw(shape);
bd.copyPixels(bd, bd.rect, new Point(0, 0), mask_bd, new Point(0, 0), false);
return bd;
}
在另一篇博客 Away3D图片墙 中用到了此方法