How to create “circles” in Box2D?

问题

I want the circle with box2d in video. http://goo.gl/39Ff3

回答1:

Did you check this site? There seems to be much tutorials.

And don't forget the manual especially 4.2 Circle Shapes.

Circle Shapes
Circle shapes have a position and radius. Circles are solid. You cannot make a hollow circle using the circle shape.

   b2CircleShape circle;
   circle.m_p.Set(2.0f, 3.0f);
   circle.m_radius = 0.5f

来源：https://stackoverflow.com/questions/10264012/how-to-create-circles-in-box2d