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中国科学院大学学报 ›› 2008, Vol. 25 ›› Issue (4): 554-559.DOI: 10.7523/j.issn.2095-6134.2008.4.018

• 论文 • 上一篇    下一篇

基于流曲线曲面的双三次非均匀B样条曲面G1混合

李秀娟1,2† 廖文和2 刘浩2 何钢2   

  1. 1南京航空航天大学理学院,南京 210016;
    2南京航空航天大学机电学院,南京 210016
  • 收稿日期:1900-01-01 修回日期:1900-01-01 发布日期:2008-07-15

G1 continuity blending between bicubic non-uniform B-spline surfaces with stream curve and surface

LI Xiu-Juan1, 2 LIAO Wen-He2 LIU Hao2 He Gang2   

  1. 1 College of Science, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China;
    2 College of Mechanical and Electrical Engineering, Nanjing University of Aeronautics & Astronautics, Nanjing 210016, China

  • Received:1900-01-01 Revised:1900-01-01 Published:2008-07-15

摘要: 在流曲线曲面造型方法中,引入非均匀细分,给出了Gaussian球面上非均匀细分的模式和计算方法,以及基于非均匀细分的流曲线曲面生成算法,研究了流曲线曲面和双三次非均匀B样条曲面G1光滑拼接的条件,并给出与两双三次非均匀B样条曲面G1混合的流曲线曲面的构造算法.

关键词: 流曲线曲面, 曲面混合, 细分, 四元数

Abstract: Non-uniform subdivision is introduced in streamline modeling. Expressions and calculations of non-uniform subdivision are given on Gaussian sphere. The generation approaches of stream curve and surface based on non-uniform subdivision are provided. G1 Continuity conditions between bicubic B-spline surface and stream curve and surface are studied. Furthermore, a construction means to blend bicubic B-spline surfaces with stream curve and surface is presented.

Key words: stream curve and surface, surface blending, subdivision, quaternion