飞行模拟器视景系统中实时地形的研究与实现  

ON REAL-TIME TERRAIN IN VIEWING SYSTEM OF FLIGHT SIMULATOR AND ITS IMPLEMENTATION

作　　者：奚海蛟[1] 张晓林[1] 

机构地区：[1]北京航空航天大学电子信息工程学院,北京100083

出　　处：《计算机应用与软件》2009年第4期150-151,201,共3页Computer Applications and Software

摘　　要：对飞行模拟器视景系统中地形的生成算法进行了研究。为兼顾地形的渲染逼真度与渲染效率,采用LOD(Level Of De-tail)算法分割地形网格,同时通过添加修补三角形的方法解决了创建渲染三角形过程中产生的地面撕裂现象。地面的类型和陆地的高度信息使用256色位图来存储,并为地面贴上相应的纹理增加地形的真实性。为进一步提高渲染效率,将地形分块,实时渲染视野范围内的地形块,得到了比较满意的效果。The terrain rendering algorithm of a flight simulator is studied. To attain high efficiency as well as high fidelity, the Level, of Details algorithm is utilized to partition the terrain grid while rendering the terrains. Meanwhile, with the mends of triangle patches added we solved the problem of ruptured ground surface while creating rendering triangles. The terrain types and altitude information are stored in 256 colour bitmap, and the terrain is covered with appropriate textures to increase the verisimilitude. Moreover, by dividing large surface into small pieces and rendering real-timely those in view, the rendering efficiency is further promoted and acquired satisfied results.

关 键 词：飞行模拟器 视景系统 地形网格 高程图 实时渲染 

分 类 号：TP391.4[自动化与计算机技术—计算机应用技术] TP391.9[自动化与计算机技术—计算机科学与技术]