• 论文 •    

基于拓扑关系的交线快速生成方法

郑军红,陈志杨,叶修梓   

  1. 1.浙江大学计算机学院/CAD&CG国家重点实验室,浙江杭州310027;2.浙江工业大学信息学院,浙江杭州310027
  • 出版日期:2003-12-15 发布日期:2003-12-25

Rapid Creation Algorithm of Intersection Line Based on Topology

ZHENG Jun-hong,CHEN Zhi-yang,YE Xiu-zi   

  1. 1.Coll.of Computer Science, Zhejiang Univ., Hangzhou310027,China;2. Coll.of Information Science, Zhejiang Univ. of Tech., Hangzhou310027,China
  • Online:2003-12-15 Published:2003-12-25

摘要: 三角网格是逆向工程中常用的数据模型。由于模型拓扑关系的复杂性,目前在网格模型的交线生成过程中数据点排序与分离存在诸多缺陷。提出了一种利用网格模型拓扑关系的交线生成与分离算法,该算法充分利用了网格模型的拓扑关系,对各种拓扑类型的数据点完成排序、分离,实现任意复杂拓扑关系的交线生成,为逆向工程中曲线框架的构造提供了依据。

关键词: 交线, 三角网格, 排序, 逆向工程

Abstract: Triangular mesh is the widely used geometric form in Reverse Engineering. Because of the topology complexity of mesh models, there are many shortages in the point sorting/separation algorithms for generating intersection line segments. So a new topology based algorithm for the sorting/separation of intersection points is presented in this paper. Based on the topologic relationships of the triangular mesh, the new algorithm can sort/separate intersection line segments rapidly and create the intersection lines with rather complex topologies. These intersection lines can then be used in creating the curve frames for Reverse Engineering applications.

Key words: intersection line segments, triangular mesh, point sorting, reverse engineering

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