【摘要】 为了实现河道地形真实感显示,运用了DEM(数字化高程模型)数据格式中的三角网格模型,利用OpenGL提供的光照、材质、纹理映射,反走样等技术实现了河道地形的三维可视化,利用VC++及OpenGL中的平移、旋转、缩放等功能,实现了河道地形三维动态显示的效果。在添加了多种工况的洪水数据后,实现了河道流场可视化及防洪预测等相关功能。更多还原

【Abstract】 In order to increase the facticity of river way terrain,this paper focuses on the Triangular Mesh Model in the Digital Elevation Model(DEM),using OpenGL method of illumination,material,texture map and antialiasing to realize the multi-dimensional visualization of river way terrain.The modeling transformation of removing,rotating and scaling in VC++ and OpenGL are also used in order to realize the dynamic displaying effect.Searching functions related to riverbank flood forecast can be realized after adding flooding data under various conditions.更多还原