Study On The Methods For Building Scene Models Of 3D Location Design Of Railway

It is important for railway location design to simulate the 3D railway environment And virtual scene models influence the simulation with high realism directly,This dissertation applied synthetically those theories and technologies of computer graphic. scientific computation visualization interactive virtual reality computer dynamic simulation etc.,to study thoroughly and carefully on critical technologies such as mixed-language programming simplification of scene models displaying realistic image and animation of 3D scene models and so on In this dissertation,the methods to build scene models were studied and applied to develop a dynamic simulation system of 3D railway scene Based on this idea,the major study contents and results can be summarized as follows:1 ) Mixed-language programming can complement each other between different programming languages and the method has a general significance and can become popular Many computation models including development of DTM optimum of DTM and reorganization of DTM were developed with Fortran language In order to use the ripe codes,the dissertation succeeded in integrating the developed Fortran codes to the Visual C++ environment and achieving the course of mixed-language programming2 ) The methods to build scene models for 3D location design were discussed in the dissertation And the development and animation of scene models had been realized by applying synthetically those technologies such as computer graphic computational geometry and geometrical modeling and computer dynamic simulation etc ,and adopting OpenGL 3D graph library Then achievement was got by using the technology of 3D visualization to livingly express design results3 ) Combing with the concerned study and development projects ,adopting VC++ as development tools and in the light of those theories and algorithms stated in this dissertation,a software,which could build scene models with realism for 3D railway location design,in the name of "The Dynamic SimulationSystem of 3D Scene of Railway" was developed.,The correctness was proved by using the software to build the 3D scene models and achieve their animation of Suining-Chongqing railway and Yunnan-Xizang railway...