基于Cesium的3DWebGIS三维场景加载及开发

3D Scene Loading and Development of 3dWebGIS based on Cesium

随着计算机的不断发展,对GIS的发展需求越来越高,3DWebGIS作为三维GIS发展的一个重要方向,三维场景构建功能越来越完善,和生活的结合越来越紧密,但基于Cesium的DEM数据开发的实际案例分析较少。以前端开源开发库Cesium和WebGL为技术依托进行研究,结合我国自主研发的天地图影像服务,通过Web服务器发布的泰山地区的DEM数据为基础数据,加载了泰山地形。同时也分析了3DWebGIS的平台技术架构,实现了3DWebGIS平台建设的解决方案,同时也通过画线等实例对一些Cesium中其他一些简单的GIS功能进行了说明。

With the constant development of the computer,the demand for the development of GIS is becoming high⁃er and higher.As an important direction of the development of 3D GIS,3D WebGIS is getting better and better per⁃fect function of 3D scene construction and closer combination with the people’s life.However,the analysis of actual case of DEM data development based on Cesium is less.In this paper,the research depended on the front-end opensource development library Cesium and WebGL that combined with Chinese self-developed sky-map image service,and the terrain of Mount Tai is loaded by using the DEM data released by the Web server as the basic data.In the meantime,it also to analysis the platform technology architecture and achieve the solution of platform construction of the 3D WebGIS,also illustrates some other simple GIS functions in Cesium by drawing lines and other examples.