Playn - 渲染空心物体
是否有渲染空心/矢量对象的标准方法（即它们没有附加图像，只有边框）？
我希望它们也能被物理模拟为动态对象。
Is there a standard way to render hollow/vectorial objects (i.e. they have no image attached, only a border)?
I want them to be physically simulated as dynamic objects as well.
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如果您的对象是矩形，您可以调用 Canvas.StrokeRect，如下所述：
http://code.google.com/p/playn/wiki/GraphicsArchitecture
至于对对象进行物理处理，这是一个单独的问题，但您可以查看示例以了解如何使用 Box2D 来运行物理模拟。
If your objects are rectangles, you can call Canvas.strokeRect, as described here:
http://code.google.com/p/playn/wiki/GraphicsArchitecture
As for doing physics on objects, that's a separate question, but you can look at the samples to see how to use Box2D to run a physics sim.