了解二维图形裁剪的原理（点的裁剪、直线的裁剪、多边形的裁剪），利用VC+OpenGL实现直线的裁剪算法。

2．实验内容：



（1） 理解直线裁剪的原理（Cohen-Surtherland算法、梁友栋算法）

（2） 利用VC+OpenGL实现直线的编码裁剪算法，在屏幕上用一个封闭矩形裁剪任意一条直线。

（3） 调试、编译、修改程序

-Understanding of the principles of cutting two-dimensional graphics (point of cutting, cutting a straight line, polygon clipping), the use of VC+ OpenGL to achieve a straight line cutting algorithm. 2. Experimental contents: (1) understand the principles of cutting a straight line (Cohen-Surtherland algorithm, You-Xin Liang Dong algorithm) (2) the use of VC+ OpenGL to achieve a straight line cutting the coding algorithm, on the screen in a closed arbitrary rectangular cutting a straight line. (3) debug, compile, modify the program