基于GIS平台三维可视化方案设计——以水污染、旅游为例

二维地理信息系统源于20世纪60年代,起源于机助制图,由于二维系统自身因素的限制,它也可以被称为是三维空间平面化的符号表示系统,所以在表达上不如拥有现实感的三维更加直观。当今科技飞速发展,传统的2D系统已经很难满足现代人更直观的视觉需求,而三维系统的建立恰好弥补了二维的不足。本文主要通过建立三维模型,分别研究水井位置、工业设施和地下水体污染轻重的空间关系,景区的三维模型建立,三维场景中表面及矢量要素的立体显示以及DEM、TIN在三维建模的特点。

Design of 3D Visualization Scheme Based on GIS Platform:Taking Water Pollution and Tourism as an Example

Two dimensional geographic information system comes from machine annotation in 1960s.Because of the resistance of two dimensional (2D) system own factors,it also can be named as symbolic representation system of three dimensional space complanation,which means it can not as intuitive as 3D which have a sense of reality.Nowadays,traditional 2D development in science already hardly meet modernist's visual demand,however,the establishments of three dimensional (3D) system cover the shortage of 2D system.In this paper,some nodi can berespectively research by building 3D model,including the space relationship of water well location,industrialfacilities and ground water pollution,one point's explode impact on surround structure in 3D space (the buffer anlysis of one point in 3D space),the stereo view's research in surface and vector elements of 3D scene throughestablishing 3D model of scenic spot,the characteristic of DEM,TIN in 3D modeling.