Road Line Selection 3d Virtual Scene Construction Methods

With the development of geographical information technology and Computer image processing capacity, it is possible to select the highway route based on the virtual environment instead of the original method with high workload and complexity. This paper mainly discussed the basic issues on achieving highway route based on the virtual environment, providing a solution that will make it more intelligent, visual and quick.That's a certain significance this paper has.This paper, based on the oretical knowledge of road traffic virtual scene construction and the design of road alignment, checked the normative standards of engineering in linear design and concluded the amendment of the way linear and reconstruction of the road model,using API functions provided by Multigen-Creator to constructe simulation model of the main road, which greatly accelerated the speed of building the model and solved the problems of using different data formats from different software;In order to improve the fidelity further,this paper discussed the way of road constructing based on three-dimensional terrain and improved the convex hull polygon generation algorithm.The methods that cutting the terrain and removing redundant points were proposed according to the three-dimensional terrain.Elaborated on how to use TIN growth and insert algorithm to create terrain in VC++ programming environment.In addition,the paper discussed how to use software Terrain-Vista to create roads scene based on the three-dimensional terrain, and how to combine the road and terrain seamlessly.Finally,this paper used platform which is used to build and drive virtual scene—VSDesign to achieve the driving and real-time simulation of the static virtual scene.Illustrated how to redraw OpenFlight model in OpenGL environment and the method of displaying and accurately querying the road design parameters real-timely.The paper proposed the technical route of how to construct road virtual scenes providing the virtual scene's constructing with reference.