Research On The VRML Three-dimensional Modeling And Animation Technology Based On Web3D

With the rapid development of internet, it has permeated into every aspect of social life. From product design, electrical commerce to all kinds of games, users have already been dissatisfied with the interactive character of the HTML (Hyper Text Markup Language) planar web, and hope to change the web into a three-dimensional space, in which they can achieve dynamic interaction and intelligent perception. Users watch three-dimensional images and animation through internet, but the datum are not read and taken from the local hard disk; the running environments differ from each other. The traditional solution is just to form images at the side of web server, and transmit the images to the side of users one by one, so it's not an easy way to meet the desire of developing web three-dimensional images.In order to solve the problem of forming and transmitting three-dimensional images and animation through internet, in the background of architectural models, this paper advances a VRML (Virtual Reality Modeling Language) three-dimensional modeling and cartoon making method that is based on the web virtual reality technique. The basic principle is to construct a vectorial VRML three-dimensional digital virtual reality model of product or scene, then transmit model document ?through the net, and render it in real-time on a local computer by VRMLbrowser after downloading it, and finally show interactive three-dimensional images and cartoon.The main contents and achievements of this paper as follows: (1) Putting forward the project and detailed process of the utilizing VRML to found network virtual scene. Importing the three-dimensional digital model saved as wrl file to three-dimensional webpage established by VRML, then promulgated to internet, thus accomplishing the three-dimensional animation effect and the user's alternation based on three-dimensional object in webpage.(2) The method of translating the three-dimensional digital model established in 3DS MAX to VRML file format which is fit for transferring on- the internet. Composing product's virtual model by the three-dimensional modeling technology and animation technology of VRML, completely expressing the designer' s intention on the internet by three-dimensional visible means.(3) Analyzing the uniting programmer technology of Java, VRML and HTML, the node programming method of VRML language, the communication of datum of Script node and Java programmer technology, thus realizing the dynamic browse and the systematical simulation of virtual scene on the internet.(4) Presenting the software and hardware solution for network communication; real-time and dynamical communication of the three-dimensional digital image of virtual scene on the internet.(5) The optimum method of minimizing the files' length of virtual VRML architecture scene is discussed in detail, a commercial dwelling house community of VRML architecture scene has been designed triumphantly, and according to human engineering principle part alternant functions have been realized, and advanced basic assumptions for other functions have been put forward expecting further research for solutions.