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Loop细分曲面的自适应等距面生成算法与实现 被引量:3

An Algorithm for Generating Offset Loop Subdivision Surface
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摘要 提出一种精确快速生成有边界等距 L oop细分曲面的新算法 ,其核心思想是 :从控制网格顶点在 L oop细分曲面上的位置 ,按照给定的等距值 ,沿其法矢正 (反 )向等距 ,通过解线性方程组求出等距后的控制网格 ,然后检测等距误差 ,对部分超过给定等距精度的控制网格进行局部自适应细分 ,重新生成等距面并检测误差 ,直至整个细分等距曲面满足精度要求 ,所生成的等距细分曲面除局部 C1 外其余 C2 连续。实例表明 :本算法高效稳定 ,生成的等距细分曲面已完全满足实际工程需要。 A new algorithm for fast and accurately generating offset Loop subdivision surfaces with boundary is proposed. The main idea is that limit points of control mesh are offset a distance along (or against) the normal, some triangles which can be detected beyond error range are subdivided adaptively until the whole offset subdivision surface satisfies the requirement. The offset subdivision surfaces are continuous everywhere except at extraordinary vertices where they are not continuous. The result of experiment has demonstrated that the algorithm is efficient and stable. The offset subdivision surface has been used in practice with high precision.
出处 《机械科学与技术》 CSCD 北大核心 2003年第6期1016-1020,1029,共6页 Mechanical Science and Technology for Aerospace Engineering
基金 高等学校优秀青年教师教学科研奖励计划 航空科学基金项目 ( 0 1H5 2 0 5 1) 江苏省青年科研基金项目( BQ2 0 0 0 0 0 4)资助
关键词 LOOP细分 曲面等距 自适应细分 等距精度 Loop subdivision surface Offset surface Adaptive subdivision Offset error
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参考文献13

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同被引文献41

  • 1方文波.线性方程组的矩阵求解算法[J].大学数学,2004,20(5):91-96. 被引量:9
  • 2赵向军,张宏鑫,鲍虎军.Loop型半静态细分方法[J].计算机辅助设计与图形学学报,2006,18(7):929-935. 被引量:3
  • 3赵宏庆,彭国华,叶正麟,周敏.自适应细分方法进行曲面造型[J].计算机应用研究,2006,23(9):72-74. 被引量:7
  • 4李桂清,吴壮志,马维银.自适应细分技术研究进展[J].计算机辅助设计与图形学学报,2006,18(12):1789-1798. 被引量:22
  • 5任水利,张凯院,叶正麟,赵宏庆.基于四边形网格的可调细分曲面造型方法[J].计算机应用,2007,27(5):1119-1120. 被引量:3
  • 6Amresh A,FarinG,Razdan A.Adaptive subdivision schemes for triangle meshes [Z]. Hierarchical and Geometric Methods in Scientific Visualisation,2003:319-327.
  • 7赵燕.C^1连续的可调细分曲面[D].西安:西北工业大学硕士论文集,2006.
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