The Key Three-Dimensional Virtual Simulation Technology Scene Roaming

Recently, virtual reality (VR) technology has become the hot spots of the computer science and urban planning, architectural design research and development. Real-time three-dimensional roaming is an important research direction in the field of virtual reality. Its immersion, interactivity and real-time combined in effect is far beyond the traditional flat animation techniques.This paper is intended to probe into the key technologies of real-time three-dimensional roaming, including modeling, scene organization, collision detection and the implementation of a real-time three-dimensional roaming demo system to suppor the Travel Instruction System.The main contents are as follows:(1) The first to modeling technology theory and methods and techniques for research and improve the modeling process and to optimize the process modeling, summarizes the methods for modeling, to explore the three-dimensional modeling optimization method.(2) The differences between indoor and outdoor scene organization are discussed with an emphasis on indoor scene organization based on BSP-Tree and outdoor scene organization based on Quad-Tree.(3) Research the basic principles of collision detection, based on BSP-Tree and OC-Tree algorithm using bounding sphere to detect.This paper finally sets up an indoor scene using 3DS MAX and implements a real-time 3D roaming demo system using VC2005 and Direct3D.