Research Of Scene Simulation Of Train Movement Based On OpenGL

Along with the rapid development of Virtual Reality (VR) ,the computer simulation wins the extensive use in many fields of military and national economics. In the field of railway traffic, we need modern means of training train conductors to familiarize and master the working condition faster and better. In view of the computer simulation, the train simulation system owns the virtue of economy,safety,flexibility and repeatability, and is used more and more in the training。By use of MFC of VC++ and OpenGL, This thesis researches the scene simulation prototype system with autonomous intellectual property:The main research works in this thesis has been summed as following:1. Based on MFC and OpenGL functions, the programming frame of train scene simulation system has been successfully set up, and the program interface with interactive ability has been split into three parts: scene installing part, scene displaying part and user controlling part.2. By use of modeling, projection, viewing operation, objects in the three-dimensional space can be translated into second-dimensional figure which the screen describes. And by modeling operations include rotation, translation, scaling, scenes can be assembled up. We can change their parameters to make the animation.3. The modeling method is classified into general modeling, 3D leading-in and special modeling method.by the way of special modeling we model many special scenes and objects easily.for example, we model terrains based on the grey data of bitmaps and based on different blending we model sun shine,train window,tree and snow successfully. Scenes meet the driver's demands of the human's vision after using these methods.4. The thesis builds a united model for the plane railway, and adopts the chain data structure to connect them. By the means of scene-installing window and dialog-inputting, the system has better interactive ability .It makes easy to lay down the scene by mouse picking up points.5.In view of the scene simulation of train movement with the large scene, the thesis uses methods of combining Cell Segmentation with fog operation and distance judgment between the scene and the observer to choose the displaying-scene, which promotes efficiency and meets the driver's demands of the human's vision.