In recent years, along with the computer technology and network technology rapid development, digitalization tide already is an inevitable trend in the development of global economy, digital city gradually aroused people's attention. City simulation technology in digital city structure plays an important role, so currently become a new Research hotspot. City simulation is virtual reality technology application in urban planning, architectural design, etc. In urban simulation application, people can in a virtual 3d environment, by using the dynamic interaction way towards the future construction or city on the scene of roaming the parties bits. True never leave home, can appreciate an unfamiliar city scenery.This paper, by studying the virtual reality visual simulation is the key technology to realize in Heilongjiang Agricultural Reclamation Vocational College of Science and Technology campus for virtual environment of visual simulation system. Through practice and test, this paper constructed the campus simulation system running smoothly, the user can realize to the campus the virtual navigation.This paper mainly do the following job. First,consult a lot of domestic and foreign related visual simulation and documents, understand the virtual reality and visual simulation technology, and the related knowledge of virtual reality and visual simulation, the present situation and development trend for investigation; Secondly,to Heilongjiang Agricultural Reclamation Vocational College of Science and Technology visual environment data collecting and sorting; Then,from the perspective of visual roaming through theoretical, combined with the practice of the 3d modeling technology way research and model reality technology and optimization techniques, etc. These technological introduction and analysis for the realization of the virtual reality simulation system provides basic theory guarantee; Finally,to guarantee the authenticity, vividness virtual scene of user's appeal, and visual scene simulation of the collision detection technology and virtual scene based on particle system study environmental effects technology.In Heilongjiang Agricultural Reclamation Vocational College of Science and Technology campus for virtual environment and combined with visual simulation is the key technology, to develop a feasible visual simulation system solutions:first determine campus visual plan, Secondly research with virtual reality modeling software SketchUp and Creator construct a virtual scene model repository, Then on the virtual scene model is optimized, Based on the Vega Prime and vc++of virtual scene for roaming and interactive control. |