The run-of-mill approach of constructing a virtual scene was introduced and the pivotal technologies of terrain, sky, physiognomy, natural phenomena etc were discussed, and the realizations of roaming control and roaming assistant tools were given.

• 论文在简单介绍了构造虚拟场景的一般性步骤后，重点讨论了地形、天空体、地物地貌、自然现象等关键技术及漫游控制与漫游辅助工具的实现等。