基于ArcGIS AE与CE的三维数字城市开发

针对三维数字城市建设周期长、数据更新难等问题,本文基于ArcEngine开发组件和CityEngine建模平台,提出了一种二三维数据联动的三维数字城市开发方法。该法首先通过对立面凹凸和顶面简化,利用规则化建模方法构建城市三维模型,然后运用插件技术在ArcEngine中读取三维模型和Geodatabase二维数据,实现城市三维模型场景可视化、空间查询与分析。实验结果表明,本文提出的方法所构建的三维数字城市功能强大,可充分利用已有数据,缩短开发周期,实现二三维数据联动,彻底解决了三维数字城市系统数据更新困难问题。

3D Digital City Development Based on AE and CE of ArcGIS

For the problem of long period of construction and difficulty of data updating in 3D digital city,a three-dimensional digital city development method that was linked by two and three dimensional data was proposed based on the ArcEngine development component and the CityEngine modeling platform.First,by simplifying the concave and convex of the facade and top surface,the three-dimensional model of the city was constructed by the rule modeling method,then the 3D model and the two-dimensional data stored in geodatabase were read in ArcEngine by the plug-in technology to realize the visualization of the 3D model of the city,the spatial query and analysis.The experimental results showed that the three-dimensional digital city built by this method is with powerful function,it would make full use of the existing data,shorten the development period,realize the linkage from 2D data to 3D data,and completely solve the problem of the difficulty of data updating in 3D digital city system.