图形学的菜鸟，基本的画直线和圆的代码（我刚开始学习，请给个机会通过吧～！谢谢站长）-graphics guys, the basic linear and circular painting of the code (I have just started learning opportunities passage Qinggeigan ~! Thank you head)

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.

使用python和opencv2，进行图像滤波、霍夫变换处理，找出图中所有圆并画出，适合刚开始接触视觉编程的人学习参照(Find circles by python, cv2)