The Research Of Visual Simulation And Real Time Data Query For Highway

At present, there are only two ways to exhibition the results of highway design. They are effect-image and 3D animation both of them are not real time, dynamic and interactive, and say nothing of real time data query for highway. However, the technology of visual simulation and database can just resolve such a problem.The System of visual simulation and real time data query for highway uses the actual data of highway design to precisely reproduce its 3D model. In such a system, the user can control his viewpoint, line of sight, and the move speed of the viewpoint by himself. At real time, the system computes and generates the picture that will be shown on the screen, at the same time query data of the highway in real time. The technology of visual simulation provides an effective way to visually demonstrate the result of highway design, the technology of database provides a good way to real time data query for highway design.The author used software of AutoCAD or 3dsmax to make the 3D model of a highway, and designed software of Visual Simulation by OpenGL, which can realize the free roaming interactively and roaming along a prearranged routing automatically and also can query the data of highway in real time. These two softwares constitute a visual simulation and real time data query system for highway.This paper introduces the idea of programming and key technologies of this visual simulation system. In addition, it introduces how to use this system by giving a sample.In the end, the paper appraises the result of this research and pointed out its shortage.Some suggestions for improving this system and further study are present in this paper as well.