用VB编写的完整的CAD程序，源代码提供，可以借鉴开发自己的CAD版本，一点遗憾的是说明是法语,VB prepared with a complete CAD program, source code provided, you can learn to develop their own version of the CAD, A LITTLE regret is that it is French

this a collection of progams in prolog wich learning us about contraint programmation (in french programmation des cnotraintes) -this is a collection of progams in prolog wich learning us about contraint programmation (in french programmation des cno

一般的矢量图形软件通过它来精确画出曲线，贝兹曲线由线段与节点组成，节点是可拖动的支点，线段像可伸缩的皮筋，我们在绘图工具上看到的钢笔工具就是来做这种矢量曲线的-The following describes the mathematics for the so called Bézier curve. It is attributed and named after a French engineer, Pierre Bézier, who used them for the body desi