基于集合运算的特征表示向边界表示转换新方法

A NEW METHOD OF CONVERSION FROM FEATURE REPRESENTATION TO BOUNDARY REPRESENTATION

特征建模已成为CAD技术的发展趋势。目前，在CAD系统中，一般采用特征表示和边界表示的混合表示方法，以充分利用两种表示法的优点。但由此而引出在特征编辑、修改时的表示转换。本文回顾了几种表示转换方法，在集合运算的基础上，提出了一种适合于特征编辑修改的形体快速重构方法，从而可快速地实现特征表示向边界表示的转换。

ABSTRACTFeature Modeling has been one of trends of CAD system. At present, the CAD system always uses hybrid representations of feature representation and boundary representation in order to take advantages of both representations. Thus, the problem of conversion between F-Rep and BRep is arisen. Some methods for processing conversion problems are reviewed in this paper, on the basis of set operation, a new method that can quickly reconstruct shape is discussed, and then the conversion can quickly carry out only by topological traverse.