cocos2d iphone - Box2D - How to make a hollow circle -


I would like to know how to create a hollow cycle, with boxes and distance combined, something like this:

I have tried to do this, but I can not get an ideal cycle, no idea? Thanks

Here's a routine n - create the down-down, Blue is a regular 16-gun, then translate each side out of the radius, and connect your original (blue) edge to each translated (red) edge:


 CircleRects


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