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| 光线跟踪技术显示NURBS裁剪曲面 | |
| 引用本文： | 蹇智 李静滨. 光线跟踪技术显示NURBS裁剪曲面[J]. 工程图学学报, 1996, 0(1): 50-54 |
| 作者姓名： | 蹇智 李静滨 |
| 作者单位： | 北京航空航天大学 |
| 摘 要： | 本文针对曲面造型系统中ＮＵＲＢＳ裁剪曲面的真实感显示需求，提出使用四叉树的数据结构和参数和空间映射的新技术，实现了光线跟踪技术的快速计算和图形的反走样处理，同时，参数域上的扫描线判断法能快速正确地识别曲面上的裁剪区域。 |
| 关 键 词： | 光线跟踪 裁剪曲面 参数空间 |
RAY TRACING TRIMMED NURBS SURFACE |
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| Jian Zhi Li Jingbin Huang Yuyu Beijing University of Aeronautics and Astronautics. RAY TRACING TRIMMED NURBS SURFACE[J]. Journal of Engineering Graphics, 1996, 0(1): 50-54 | |
| Authors: | Jian Zhi Li Jingbin Huang Yuyu Beijing University of Aeronautics and Astronautics |
| Affiliation: | Jian Zhi Li Jingbin Huang Yuyu Beijing University of Aeronautics and Astronautics |
| Abstract: | The quadtree data structure is used to accelerate the implementation of ray tracing. A new method of parametric space mapping is introduced to do the antialiasing. As to trimmed surfaces, we make use of scanline method in parametric space to calculate the trimmed region efficiently. |
| Keywords: | ray tracing trimmed NURBS surfaces parametric space scanline |
| 本文献已被 CNKI 维普 等数据库收录！ | |