这是一个虚拟地形场景漫游,涉及到三维真实感地形,地物模型建立, 地物叠加 等多项技术.关于虚拟现实的技术现在应用很广泛.主要是临场的环境,对用户控制行为的动态反应-This is a virtual roaming terrain scenes, involving realistic three-dimensional terrain model building features, such as superposition of a number of technical features