Loop细分曲面上的交互切分算法  

Interactive fillet operations with Loop subdivision surfaces

作　　者：刘伟中[1] 施锡泉[1] 宋根旺[2] 

机构地区：[1]大连理工大学应用数学系,辽宁大连116000 [2]河北理工学院机械系,河北唐山063009

出　　处：《河北理工学院学报》2002年第2期42-45,共4页Journal of Hebei Institute of Technology

摘　　要：给出了Loop细分曲面上的一系列执行切分算法及交互操作的规则。切分算法是在给定边的尖锐程度上通过执行一次细分多面体现网格而实现的。一般地 ,相交于一个顶点的边数并没有限制 ,而且 ,每一个边的切分值可以不同。这一交互切分算法将有助于加强用细分曲面进行曲面造型的计算机图形系统。Surfaces can be generated easily by subdividing polyhedral networks recursively,but over simple or rough polyhedral network,it is difficult to get the surfaces the designers wanted to model.To solve this problem,complex or precise polyhedral networks have to be defined.In this paper,a set of rules and an interactive algorithm for making fillet operations with Loop subdivision are presented.The fillet operations are implemented by subdividing a polyhedral network through giving sharpness of edges of the polyhedral network.Generally,the number of edges that meet at one vertex is no restriction and the sharpness of every edge can be different.The fillte operations proposed here will strengthen the functions of Computer Graphics system that uses subdivision surfaces to model surfaces.

关 键 词：细分曲面 Loop曲面 切分算法 曲面造型 计算机辅助 计算机图形系统 交互操作 

分 类 号：TP391.72[自动化与计算机技术—计算机应用技术] TP391.41[自动化与计算机技术—计算机科学与技术]