华南理工大学学报(自然科学版) ›› 2003, Vol. 31 ›› Issue (11): 88-91.

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四点法曲面造型的自然边界条件

梁景鸿 吴广潮 丘东涛 汪国强   

  1. 华南理工大学 应用数学系‚广东 广州510640
  • 出版日期:2003-11-20 发布日期:2022-06-17
  • 作者简介:梁景鸿(1975-)‚男‚硕士‚主要从事应用数学 和计算机应用研究

Natural Boundary Conditions of4-point Theory for Surface Design

Liang Jing-hong Wu Guang-chao Qiu Dong-tao Wang Guo-qiang   

  1. Dept.of Applied Mathematics‚South China University of Technology‚Guangzhou510640‚China
  • Online:2003-11-20 Published:2022-06-17

摘要: 研究四点插值细分法在曲线曲面造型应用中的边界条件确定问题.针对四点法 的特点‚对传统几何造型技术中常用的非线性自然边界条件决定方法进行改进‚基于等腰 梯形四点共圆的事实‚提出通过求轴对称点而得自然边界点的线性方法‚很好地解决了四 点法在曲面造型应用中的关键问题

关键词:  , 自然边界条件;四点法;线性;插值

Abstract: A solution to the boundary conditions of4-point interpolatory subdivision scheme in the application to curve and surface modeling was studied.Combineing with4-point scheme‚the traditional nonlinear method for natural boundary conditions in geometric modeling is improved.Based on the fact that vertexes of an isosceles trapezoid are concyclic‚a linear method is brought forward for natura-l boundary-point by getting axisymmetric point.Hence the key problem concerning the application of 4-point theory to surface modeling is well resolved

Key words: natural boundary condition, 4-point theory, linear, interpolation

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