基于OpenGL三维非均匀FDTD网格图形的消隐处理  

Processing hidden-image of 3D non-uniform FDTD meshes on OpenGL

作　　者：周国祥[1] 王春艳[1] 

机构地区：[1]合肥工业大学计算机与信息学院,合肥230009

出　　处：《计算机应用研究》2008年第1期285-287,共3页Application Research of Computers

基　　金：国家教育部科学技术研究重点资助项目(03100);安徽省自然科学基金资助项目(050420202)

摘　　要：在分析了三维非均匀FDTD网格图形性质及计算数据结构特点的基础上,提出了一种基于OpenGL深度缓冲机制的绘图方法,采用多边形深度偏移量修正法进行精细化的消隐修正,实现了网格图形的快速生成与高效消隐,大大提高了FDTD仿真及模拟计算网格图形的可视化效果,并在此基础上设计并实现了基于OpenGL的三维网格模型仿真系统。最后,以U型天线的网格图形为例,展示其可视性。Based on the analysis of the graphic characteristics of 3D meshes and the nature of data structure, according to depth-buffer mechanism of OpenGL, a new plotting way was presented, which adopt polygon depth offset modification in refined hidden-image. The way could increase the plotting speed and achieve high efficient hidden-image, so that the visual effect of mesh graphics for FDTD emulation and simulation was enhanced better, finally, a 3D grids pattern simulation system based on OpenGL was developed. As a sample, the U-shaped antenna meshes were demonstrated for visualization.

关 键 词：非均匀FDTD网格 OPENGL 图形消隐 深度缓存 多边形深度偏移量修正 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]