Research On Construction Technology And Application Of Three-Dimensional Model In CyberCity

CyberCity often involves the modeling of Wide-field complex ground object of nature and humanity, especially difficulty in building the three-dimensional model which cover the whole city. Up to now,the construction of three-dimensional model is still a work which needs great investment,more difficult technology and complex technical requirements, and its level of technology is the very important restriction factor of affecting the construction of CyberCity GIS.This paper study the principle and method of three-dimensional construction and the application of the technology of three-dimensional construction in CyberCity GIS combinating the technique of three-dimensional modeling,database and component based development: achieve the objective of dynamic construction and construction as a batch based on the two-dimensional GIS data; Building the three-dimensional symbol database of the buildings in the Chao Yang school region of Jilin University; Building the VirutalCampus system,which have the function of three-dimensional browsing,spatial measuring,information querying,information analysis,data updating and user management; Based on the technology of event monitor of COM , achieve the special treatment to the three-dimensional scene using the rendering function of OpenGL, enhancing the realistic sense and immersing display of the scene, remedying the defect of implementation of three-dimensional special effect with ArcEngine.