浅谈OpenGL在地学3维可视化中的应用

3维地形模型无论是在直观的视觉感受还是在空间分析等方面都是2维地学模型所无法比拟的。DEM是建立地学3维可视化的主要内容,也是3维地理信息系统GIS的主要研究内容之一。本文所实现的程序是在VC 6.0平台基础上,基于DEM数据,利用OpenGL提供的相关功能函数,达到地学3维可视化的目的,同时利用纹理映射技术为3维模型贴纹理建立真实感强的3维环境。

Discussion on the Application of OpenGL in 3D Visualization for Geosciences

3D topographic model is better than 2D geosciences model in the aspects of intuitionistic visualization feeling and spatial analysis.DEM is one of the main contents of 3D visualization for geosciences and one of the main research topics in 3D GIS.The program which is implemented in this paper realizes the objective of 3D visualization for geosciences using DEM data and the function provided by OpenGL based on the platform of VC 6.0.Meanwhile,it set up the real 3D environment by draping texture image for 3D model using texture mapping technology.