Research On The Effective Modeling Of Virtual Reality And Model Simplification Based On CAD Data

Nowadays, Due to too many polygon faces or Irregular triangles as well as losing boundary information were produced when CAD model converts to virtual reality model, it could not meet the requirement of real time rendering in virtual reality environment.A method about CAD model's translation and simplification was introduced. The CAD model was exported to the media file and then the mesh data which got from media file was simplified through the sorting algorithm. At last the standard model of virtual reality was created by OpenFlight API. The whole simulator model has been walked in VegaPrime runtime environment. The visualization simulation has achieved a satisfying result, so this method put forward in this paper is valid and effective.From the viewpoint of Virtual Reality Modeling, in accordance with light Flight simulator view modeling requirement combined with our existing conditions and a number of development tools, develop a system which could generate OpenFlight model meeting virtual reality view requirement rapidly in accordance with the existing CAD models. This paper carries out in-depth research on three-dimensional mesh simplification algorithm, puts forward the edge collapse simplification based on normal algorithm, which has achieved on VC 7.0 platform by using C + + and OpenGL. At last it is proved that the model was better for real time rendering in virtual environment.