将MultiGen/Vega虚拟现实场景用于GIS的研究与实践

Application of MultiGen/Vega Virtual Reality Scene in GIS

利用MultiGenCreator和Vega软件平台 ,开发出了集三维模型漫游、动态显示于一体的虚拟现实场景 ,并探讨了将此场景用于GIS的可能性 .分析了建立该场景的开发过程 ,论述了虚拟模型的获得、纹理的处理、AutoCAD和Imagis3.0中模型的转换等技术 ,同时对Vega中有关自由度控制、碰撞检测、输入控制、文字声音提示信息、地图提示功能。

The authors develop a virtual reality scene in Multigen Creator and Vega environment, which integrates functions of dynamic demonstration and roaming, and discuss the possibility of applying this scene in GIS. In this paper, they state the developing procedure, which includes obtaining the virtual reality model, processing the texture, transferring model among AutoCAD, Imagis and MultiGen environments, and program to realize freedom degree controlling, colliding testing, input controlling, suggestive information showing (includes some geographic information), and objects picking, etc.