节点文献

基于B-REP的CAD模型与VR模型接口的实现

Realization of Interface Between B-Rep-based CAD Model and VR Model

  • 推荐 CAJ下载
  • PDF下载
  • 不支持迅雷等下载工具,请取消加速工具后下载。

【作者】 罗显光李爱平刘雪梅李军

【Author】 LUO Xian-guang1,2,LI Ai-ping1,LIU Xue-mei1,LI Jun1(1.Institute of Advanced Manufacturing Technology,Tongji University,Shanghai 200092,China;2.School of Mechanical Engineering,Xiangtan University,Xiangtan 411105,China)

【机构】 同济大学现代制造技术研究所湘潭大学机械工程学院

【摘要】 复杂CAD模型利用现有数据接口向VR模型转换存在面片数过多,不能满足在虚拟环境下实时性要求。在保证模型精度前提下,为减少面片数目,提出了基于B-Rep表示CAD模型的边界上点数据提取方法;实现平面多连通区域转化为单连通区域算法;利用uv平面搜索得到曲面上点数据及其排列顺序快速实现曲面三角化,改变边界上点的数目可生成多LOD模型,实验验证了算法具有可行性。

【Abstract】 Too many polygon faces were produced if complicated cad model converts to virtual reality model making use of the current data interface,it failed to meet with the real time requirement in virtual reality environment.In order to decreasing the number of the polygon faces at a proper precision of geometry model,the method was introduced to get the points data at the boundaries in the B-rep based cad model and realizing the algorithm from multi-loop plane regions to single loop regions;surface triangulation was realized by getting the points data and their turns in the uv parameter region of the surface.LOD model can be created by changing the number of the points on the edge of CAD model.The algorithm has good effect in practice.

【基金】 上海市“十一五”重大科技攻关项目(06DZ11310);上海市科委项目(71111005)
  • 【文献出处】 系统仿真学报 ,Journal of System Simulation , 编辑部邮箱 ,2009年06期
  • 【分类号】TP391.72
  • 【被引频次】2
  • 【下载频次】213
节点文献中: 

本文链接的文献网络图示:

本文的引文网络