FLEX：为你的饼状图的背景填充位图--Degrafa
Degrafa是个很棒的开源框架
官方网站这里这边走：Degrafa framework.
By using the BitmapFill class you can easy add any images to the PieSeries fill property. I have created a small sample demonstrating this, and the use of the ComplexFill class inside a charting component.
