绘制基本的图元，能够实现基本的CAD功能，源码-Draw up the basic primitives, to achieve the basic CAD functions, source code

用VB.NET和VC#.NET开发交互式CAD系统(源代码-VB.NET VC#.NET CAD

JNetCAD is a simple Java GUI for importing and exporting several CAD formats. Each im- and export module exists as JAR library and can be used separately in other projects. JNetCAD uses jRealiy for the visualization. Hen