基于SketchUp与ArcGIS的校园3DGIS的设计与实现

Design and Realization of Campus 3DGIS based on Google SketchUp and ArcGIS

三维可视化与空间分析相结合是虚拟现实研究发展的一个趋势。通过利用Google Sketch-Up三维建模技术和ArcGIS 9.3的Geodatabase数据模型、ArcScene的三维应用环境和空间分析功能,采用ArcGIS Engine 9.3和Visual Studio 2005(C#)的二次开发技术,设计与开发了西北农林科技大学南校区三维地理信息系统,并对相关技术和实现过程进行了探讨。系统实现了校园二维数据的图层管理、编辑管理、符号设计、空间查询、最优路径动态分析、长度面积量算和专题制图等功能;三维模型的导入和导出、图层管理、三维场景浏览(导航、飞行、缩放、漫游等)、三维地物空间查询、三维交互测量以及二维矢量图形和三维场景的互动等功能。该系统的设计与开发是校园3DGIS理论和技术的有益探索。

The combination of three Dimension（3D） visualization and spatial analysis has become the development tendency of virtual reality research.Therefore,we try to proceed an organic combination between GIS software and professional modeling software in this study.This study is of great significance for the realization of 3D scene visualization,scene dynamic roaming,information query and spatial analysis and so on.The southern campus of Northwest Agriculture and Forest University was used as an example in this study.Integrated with Google SketchUp 3D modeling technology,Geodatabase data models of ArcGIS9.3,3D application environment and the spatial analysis functions of ArcScene,using secondary development technology of ArcGIS Engine 9.3 and Visual Studio 2005（C#）,the 3D campus geographic information system was well designed and accomplished,and further discussed the specific technology and realization procedure.The system has many functions,such as layers management,symbols design,edit management,spatial query,optimal path dynamic analysis,length and area measuring and thematic mapping of two-dimensional data,etc.In addition,3D models system could realize importing and exporting,layers management,3D scene browsing（including navigation,flying,zooming,roaming,etc.）,spatial query,measurement and the interactivity with two-dimensional vector.The design and development of the system will be benefit for the exploration of 3DGIS theory and technology.