| 基于OpenGL曲面最短路径可视化的实现 |
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| 引用本文： | 谭炳球,邓葵阳,李胜利.基于OpenGL曲面最短路径可视化的实现[J].华东地质学院学报,2009,32(3):275-279. |
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| 作者姓名： | 谭炳球 邓葵阳 李胜利 |
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| 作者单位： | 中国人民解放军61683部队,北京100091 |
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| 摘 要： | 路径分析是GIS空间分析中的重要组成部分，但目前一些最短路径应用结果主要还是基于二维平面的线状显示。随着三维可视化技术的广泛应用，曲面最短路径可视化是GIS最短路径分析的一个热点。通过简化处理实现曲面近似最段路径的求解与三维可视化表达。首先根据逐点插入法生成了三角网曲面，并在此基础上构建三角网之间的拓扑关系．最后利用可视化开发语言VC＋＋6．0，并结合OpenGL编程实现了曲面上两离散点间的最短路径三维显示。实验证明，该算法计算速度快，表达效果良好。
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| 关 键 词： | 最短路径 可视化 逐点插入 OpenGL |
Visualization of the Surface Shortest Path Based on OpenGL |
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| TAN Bing-qiu,DENG Kui-yang,LI Sheng-li.Visualization of the Surface Shortest Path Based on OpenGL[J].Journal of East China Geological Institute,2009,32(3):275-279. |
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| Authors: | TAN Bing-qiu DENG Kui-yang LI Sheng-li |
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| Institution: | (No. 61683 Branch of People＇s Liberation Army,Beijing 100091 ,China) |
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| Abstract: | Path analysis is important part in GIS spatial analysis, but now, the application results of some shortest path mostly diaplay on the striation display based on the 2D plane. As 3D visualization technology being more and more widely used, the shortest path on curved surface visualization is a hot spot in GIS shortest path analysis. This paper is attempt to implement the solution of the shortest path on proximal curved surface and express the 3 D visu- alization. First of all this paper be based on Insertion point by point method to generate a surface triangulation, and on the basis of the relationship between building a topology, and then through the visual language VC ＋ ＋ 6.0 combine OpenGL programming on the surface between two discrete points of display of the shortest path. The ex- periment shows that the algorithm is fast and good results. |
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| Keywords: | OpenGL |
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