早OPENGL中用逼近的方法画圆，工具是vc++，我刚学opengl，还有很多不懂的地方，希望和大家交流。-early OpenGL used approximation methods Circle, the tool is the vc, I just learning opengl, There are many who do not understand, and we hope that the exchanges.

早OPENGL中用逼近的方法画圆，工具是vc++，我刚学opengl，还有很多不懂的地方，希望和大家交流。-early OpenGL used approximation methods Circle, the tool is the vc, I just learning opengl, There are many who do not understand, and we hope that the exchanges.

用OpenGL实现的中点画圆算法，同时实现了窗口重画不改变圆的形状的功能。-OpenGL implementation of the midpoint circle algorithm, while achieving a window redraw does not change the round shape of the function.