关键词: 飞行模拟； 地形绘制； 约束四叉树； 嵌套几何误差

Abstract:

In view of the requirement of flight simulation, we presented a largescale terrain rendering method with dynamic error metric, which is based on restricted quadtree. By means of error saturation, the error metric of our method meets the requirements of parallel computing that can be used to select terrain grid points, which makes the error metric and triangulation executed by GPU. It improves the rending efficiency of image hardware, and saves the running time of CPU. The algorithm can be used for realtime rendering of large scale terrain in highspeed flight simulation.

Key words:  flight simulation, terrain rendering, restricted quadtree, nested geometric space error