如何创建“圆圈"?在Box2D中? [英] How to create "circles" in Box2D?

问题描述

我想要视频中带有box2d的圆圈. http://goo.gl/39Ff3

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

推荐答案

您是否已检查此网站?似乎有很多教程.

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

也不要忘记手册，尤其是 4.2圆形.

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

圆形>
圆形具有位置和半径.圆圈是实心的.您不能使用圆形制作空心圆形.

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

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