这是我刚学习图形学时做的第一个程序，以后的程序都是在它的基础上添加的。今天拿出来供初学图形编程的同学参考，希望对你们有所帮助以后也可以交流我的QQ：903628187-This is when I have to learn to do graphics, the first procedure, after the procedures are based on it added. Out today for the beginner students graphical programmin