局部操作处理及其在微机CAD系统中的应用

The Study on the Local Operation and Its Application in CAD System of Microcomputer

本文着重介绍采用局部运算(或称局部操作)方法构造复杂形体的基本原理、算法以及一些实际操作过程。在几何造型中,这些方法是很有用的,而且使用十分方便。文章首先介绍欧拉运算和一些简单的局部运算方法,如切角、倒圆角和局部扫描等。最后综合使用各种简单的局部运算方法构建了一个比较复杂的形体(实际机械零件)。

In this paper the basic principle, algorithm and some practical procedures of local operation have been studied, which are used to conveniently construct some more complex objects.The method of local operation is very useful and convenient in geometric modeling. First, Euler operation and local operation on some simple objects are introduced such as making chamfer,fellet and local sweep etc.on them according to their need. Finally, in this paper an example is presented to construct a more complex object. It is based on using all kinds of simple local operations.