Research Of VRML-based 3D Modeling In Virtual Reality

3D modeling is the most important part and one of the pivotal technologies of virtual reality (VR). This paper makes research on 3D modeling, database connection and web connection, as a sub project of the project named "Research of information acquisition and video in digital city". The author's main works are given as follows:Firstly, the author has read a lot of materials and information about the VR. In addition, she attended a training class to know more about VR. And she summarizes the learning in the paper.Secondly, the paper compares all sorts of 3D modeling technology and selects the VRML to model because it is easy to connect the Internet and has animation nodes and sensor nodes. Then it builds the 3D navigation part using the VRML. The texture and LOD are studied in the paper.Thirdly, the paper discusses the connection method of the database and puts forward using the ADO of ASP. Then it sets up the users information database and querying database using the Access. And the paper realizes the connection of VRML and database by ADO.Fourthly, the paper builds a web station by ASP and realizes the communication of VRML and ASP through the script node. Then it integrates all the parts on the web station and debugs them. The web station has the function of 3D automatic navigation and querying.Finally, the paper summarizes the past research and prospects the future work for the further study of the project.The research has theoretic and practical value in the digital city and VR field. At the same time it makes solid basis for the development and study of the "Research of information acquisition and video in digital city".