OpenGL有着很好的交互式程序设计接口，通过选定与反馈等机制可以很好的实现交互式绘图设计。再与MFC相结合，简直可以很容易的开发出相关的类CAD软件。 由OPENGL负责图元的创建和编辑以实现动画，由MFC负责与操作系统的信息交换。分工合作，层层实现 在主菜单上新建三个不同的菜单项分别实现生成图元，拖动图元，删除图元的功能。特别的，关于直线的拖动要用到橡皮直线技术。-OpenGL is a good interactive programming interface, through

ALGLIB is a cross-platform numerical analysis and data processing library. It supports several programming languages (C++, C#, Pascal, VBA) and several operating systems (Windows, Linux, Solaris). ALGLIB features include: • Linear algebra (di

1. 编程实现DDA直线生成算法或其它直线生成算法 2. 编程实现Bresenham圆弧生成算法或其它圆弧生成算法 -1 DDA linear programming algorithm to generate a straight line or other generation algorithm 2 to generate programming Bresenham algorithm or other circular arc generation algorithm