| 椭圆型Offset曲线及其应用 |
| |
| 引用本文： | 汪国平,孙家广. 椭圆型Offset曲线及其应用[J]. 计算机学报, 2000, 23(5): 531-536 |
| |
| 作者姓名： | 汪国平 孙家广 |
| |
| 作者单位： | 1. 北京大学计算机科学与技术系,北京,100871
2. 清华大学计算机科学与技术系,北京,100084;清华大学国家CAD工程中心,北京,100084 |
| |
| 基金项目： | 国家自然科学基金!( 69772 0 19) |
| |
| 摘 要： | 针对Ｓｗｅｅｐ曲面中形变控制的需要，提出了一种椭圆型ｏｆｆｓｅｔ曲线，并讨论了它的性质，为了便于造型系统的一致性表示，给出了椭圆型ｏｆｆｓｅｔ曲线的ＮＵＲＢＳ逼近表示算法。最后给出了椭圆型曲线的了它的应用实例，并在自主开发的几何造型系统ＧＥＭＳ５．０中实现。
|
| 关 键 词： | offset曲线 椭圆型offset曲线 几何造型 CAD |
| 修稿时间： | 1999-07-28 |
An Ellipse-Liked Offset Curve and Its Application |
| |
| WANG Guo-Ping,SUN Jia-Guang. An Ellipse-Liked Offset Curve and Its Application[J]. Chinese Journal of Computers, 2000, 23(5): 531-536 |
| |
| Authors: | WANG Guo-Ping SUN Jia-Guang |
| |
| Abstract: | In this paper, on type of general offset curve, an ellipse liked offset is introduced to satisfy the smooth deformation control in the swept surface, and its properties are discussed. Furthermore, considering the compatibility with the data structures and algorithms of the geometric modeling system, this paper presents an offset approximated algorithm with NURBS curve. Finally, the reasonableness and the robustness are verified by many examples, which have been implemented in the commercial geometric modeling software GEMS 5.0 developed by Tsinghua University. |
| |
| Keywords: | general offset curve ellipse offset curve approximation sweep surface deformation |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
