“虚拟地景生成系统”是基于Windows2000系统和Visual C++ 6.0平台，利用基本OpenGL函数编程技术开发的三维可视化成果。它通过简单的DEM（数字高程模型）数据，建立格网模型、再根据光照强度、高程值及有关数据建立数学模型，生成晕渲，再将它投影到平面上，达到模拟现实地貌起伏的效果。 本系统采用XP风格界面，清新自然。它具有透射/正射投影切换、漫游、缩放功能。支持分层晕渲、比高设定、平移、旋转、翻滚、视野调节、雾化、纹理贴图(显示/隐藏)等诸多功能，单幅、1MB大小的DEM数据生成速度为秒级，浏览时无停顿。-"to the virtual scene generation system" is based on Windows 2000 and Visual C 6.0 platform, using the basic function of OpenGL programming technology developed by 3D visualization results. Through simple DEM (Digital Elevation Model) data, establish grid model, in accordance with light intensity, elevation data and the value of a mathematical model, generate Hillshading, then it projection plane to achieve realistic simulation of the effect of undulating topography. The system uses XP style interface as well. It has transmission / switching are overhead projectors, roaming, zoom function. Support for layered Hillshading, compete against the creation, translation, rotation, rolling and vision adjustment, atomization, textures (Show / Hide), and many other functions, Single, 1MB s