程序设计在画法几何中的应用

The Application of Program Design in Descriptive Geometry

在AutoCAD中绘制直线、多边形的三面投影图以及直线与平面的换面,完全使用交互式方式,图线较多,作图复杂。利用AutoLISP语言编写程序,在AutoCAD中实现自动处理并绘制直线、多边形的三面投影图以及直线与平面的换面,使作图变得简单快捷。

In AutoCAD,If drawing three plane projections of line and polygon, or drawing transform projection plane of line and plane graphic by using interactive way completely, It has to make so many assistant lines and the drawing is too complex, But if doing it by compiling programs in language of AutoLISP , it can process automatically and makes drawing simply and rapidly .