【作者】 涂圣文；

【导师】 吴小平；

【作者基本信息】 华中科技大学 ， 道路与铁道工程， 2005， 硕士

【摘要】 本文系统论述了计算机辅助设计(CAD)、地理信息系统(GIS)、虚拟现实(VR)技术在工程领域集成应用的若干问题。本文以工程中最常用的AutoCAD 软件为基础平台,提出了CAD 与GIS 集成、GIS 与VR 集成、CAD 与VR 集成的实现方法。(1) CAD 与GIS 集成:以ObjectARX 和数据库技术为工具,实现AutoCAD 数据的常规GIS 功能; 深入剖析ESRI 公司的Shapefile 文件结构,实现AutoCAD 的DWG向Shapefile 文件的转换,并自动实现图形数据与属性数据的连接。(2) GIS 与VR 集成:引入MultiGen-Paradigm 公司为ArcView 用户定制的三维仿真模块SiteBuilder3D,实现GIS 二维数据的三维可视化。(3) GIS 与VR 集成:以ObjectARX、Openflight API、Vega Prime API 为开发工具,在AutoCAD 环境下直接生成Multigen 的Openflight 格式文件,并实现场景三维漫游; 本文的创新点在于: (1)充分考虑工程界软件应用的实际情况,以AutoCAD 为依托平台,在AutoCAD环境下实现GIS 及VR 的应用。(2)在工程界首次引入三维仿真模块SiteBuilder3D, 实现GIS 与VR 技术的集成应用。(3)在工程界首次采用Openflight API 及Vega Prime API 的开发技术,实现CAD与VR 的集成应用。本课题的研究成果,有很强的现实意义。在计算机技术飞速发展的今天,本文的研究成果为CAD、GIS 及VR 技术在工程界的集成应用提供了最佳的解决方案,可广泛运用于城市规划、交通地理信息系统、道路设计等领域。更多还原

【Abstract】 The issues about the integral application of computer aided design (CAD), geographical information system (GIS) and virtual reality (VR) technologies in engineering domain were discussed in this paper. The methods of applying CAD and GIS, GIS and VR, CAD and VR as integration on the fundamental platform of the common engineering software AutoCAD were offered in this paper: (1) Integral application of CAD and GIS: The general GIS function of AutoCAD files has been realized with the technologies of ObjectARX and database. Furthermore, the shapefile structures of ESRI Inc were analyzed thoroughly. The transformation from DWG and DXF files to shapefile and the automatic connection between the figural data and characteristic data were realized. (2) Integral application of GIS and VR: Three-dimensional simulation module SiteBuilder3D that is customized by MultiGen-Paradigm Inc for the users of ArcView is introduced, which helped to realized the settlement of making GIS planar data three-dimensional visualization. (3) Integral application of CAD and VR: With development tools of ObjectARX, Openflight API and Vega Prime API, Openflight files were written directly in AutoCAD environment and 3D View was also launched directly in AutoCAD environment. The innovation of this paper is embodied as below: (1) The author realizes the fact of software application in engineering domain, and advances carrying out GIS and VR application in AutoCAD environment. (2) It was the first for the author to introduce the three-dimensional simulation module SiteBuilder3D, and to make the integral application of GIS and VR possible. (3) It was also the first for the author to adopt development tools of Openflight API and Vega Prime API, and to make the integral application of CAD and VR possible. The production and conclusion of this paper is significant. Today, with the rapid development of computer science, the production of this paper offers the best solution of integral application of CAD, GIS and VR technology in engineering domain. It can be applied in city layout, transportation GIS, road design etc.更多还原