基本图形生成的指导 其中包括生成直线 圆 椭圆 区域填充 等-Basic pattern generation guide which includes generating a straight line circle ellipse fill, etc.

利用VC++编写图形裁剪程序，可供大家对计算机图形学的初步学习使用- use vc++ to write graphical cutting program, it is available for everyone to learn the computer graphics