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一类四次隐式代数曲面的参数化

解滨1, 韩力文2, 张树功3   

  1. 1. 河北师范大学 信息技术学院, 石家庄050016; 2. 河北师范大学 数学与信息科学学院, 石家庄050016; 3. 吉林大学 数学研究所, 长春 130012
  • 收稿日期:2005-07-12 修回日期:1900-01-01 出版日期:2006-07-26 发布日期:2006-07-26
  • 通讯作者: 张树功

Parameterization of a Kind of Quartic Implicit Algebraic Surfaces

XIE Bin1, HAN Liwen2, ZHANG Shugong3   

  1. 1. College of Information Technology, Hebei Normal University, Shijiazhuang 050016, China; 2. College of Mathematics and Information Science, Hebei Normal University, Shijiazhuang 050016, China; 3. Institute of Mathematics, Jilin University, Changchun 130012, China
  • Received:2005-07-12 Revised:1900-01-01 Online:2006-07-26 Published:2006-07-26
  • Contact: ZHANG Shugong

摘要: 针对轴垂直的3个二次管道曲面的特点, 基于由控制球得到的拼接曲面表达式, 实现了GC1拼接3个二次管道曲面的四次隐式代数曲面的整体参数化, 并可以实时地在机器上显示拼接曲面. 在用特定平面束截四次拼接曲面而得到一条平面三次曲线和一条直线时, 可以不经过坐标旋转变换而直接约去直线; 对于平面三次截线的参数化通过平行面截取法实现, 避免了辐射线束方法在平面三次曲线的有效点选取、排序等方面的问题.

关键词: 隐式代数曲面, 拼接, 参数化

Abstract: We studied the parameterization of a kind of GC1blending of three quadratic surfaces using the ControlSpherebased expression of the blending surface and gave a global parameterization algorithm. At the  same time, we can get the realtime display of the blending surfaces. Different from the parameterization of blending of two quadratic surfaces, it is unnecessary for us to use rotation transformation to reduce the line from the 4thdegree blending surface. We used parallel planes to intersect the cubic curve instead of using radioactive rays.

Key words: implicit algebraic surfaces, blending, parameterization

中图分类号: 

  • O241