flex Bit地图Data(位图)合并

flex BitmapData(位图)合并

参考网址  http://arahaya.com/canvasscript3/tests/bitmapdata_merge.html

 

 

var bitmapData:BitmapData = new BitmapData(component.width,component.height+30, true, 0x0);
						var matrix:Matrix = new Matrix();
						matrix.translate(0,30);
//位图平移
						bitmapData.draw(component,matrix);
						

var bitmapData2:BitmapData = new BitmapData(component.width, component.height+30, true, 0x0);
						bitmapData2.draw(component);
						
//位图合并   0x80
表示两张图片各取一半
						bitmapData2.merge(bitmapData, new Rectangle(0, 0, component.width, component.height+30), new Point(0, 0), 0x80, 0x80, 0x80, 0x80);
						//bitmapData2.draw(bitmapData);
						var image:Image = new Image();
						image.source = new Bitmap(bitmapData);