三角网格曲面模型快速分层算法

孙殿柱; 朱昌志; 李延瑞

三角网格曲面模型快速分层算法

山东理工大学机械工程学院, 淄博 255091

基金项目: 国家863计划资助项目(2006AA04Z105)

详细信息

作者简介:
孙殿柱(1956-),男,山东烟台人,教授,zhuchzhi@126.com.

中图分类号: TP 391.72
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- 文章访问数: 3039
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- 被引次数: 0
出版历程
- 收稿日期: 2009-02-27
- 网络出版日期: 2010-03-31

Fast slicing algorithm for triangular mesh model

School of Mechanical Engineering, Shandong University of Technology, Zibo 255091, China

摘要

摘要: 提出一种三角网格曲面模型快速分层算法,该算法基于R^*-tree建立三角网格动态空间索引结构,依据索引结构数据结点的分布状况计算各层截平面的位置;采用深度优先遍历方法获取与截平面相交的三角面片集合,并计算该集合中各面片与截平面的交线,将交线首尾相连,生成截面轮廓线,实现三角网格曲面模型的快速分层;实例证明该算法可对各种复杂三角网格曲面模型进行分层,算法准确、稳定,运行效率高.
- 三角网格曲面模型 /
- R^*-tree /
- 深度优先遍历 /
- 截面轮廓线 /
- 快速分层
Abstract: A fast slicing algorithm for triangular mesh model was proposed. The node splitting algorithm and the clustering algorithm of R^*-tree were improved and the spacial index structure of triangular mesh model was established based on the improved R^*-tree. The position of slice planes was computed according to data nodes- distributing of the spacial index structure, thus the distribution of slice planes was intensive in the cragged region of triangular mesh, and the distribution of slice planes was sparse in the smooth region of triangular mesh. The intersection triangular facets with slice plane were obtained with depth-first traversal algorithm of R^*-tree. The intersection line segments between slice plane and interection triangular facets were computed and they were sorted end to end, then the orderly section contour lines were obtained. It was proved that this algorithm can obtain section contour line accurately, effectively and has strong adaptability of triangular mesh model.
- triangular mesh /
- R^*-tree /
- depth-first traversal /
- section contour line /
- slicing algorithm

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参考文献(1)

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