Simulation Of Rain And Snow In Visual Simulation Of Train Driving Simulator

With the rapid development of rail transportation, the train divers on the training of safety regulations put forward higher requirements. Moreover, the rain and snow directly affect the safety of train drivers, train driver training under the rain and snow highlights the magnitude of safe driving. Under rain or snow weather, raindrop or snow on the train window impact the train driver's vision. The rain and snow simulation is added to train driving simulator visual can raise train driving environment simulation fidelity.In this thesis, the mathematical model selected particle system to simulate rain and snow phenomenon of train visual simulation. MultiGen Creator of establish three-dimensional modeling software used to model wiper. Use C++, real-time three-dimensional rendering software development kit OpenGL Performer, OpenGL three-dimensional graphical interface and shading language GLSL simulate particles and wiper on train window, and the function of wiper.This paper introduces the basic model of particle systems, combining the characteristics of train operation, give a method of simulating particles which are in scene and train window. Papers will be divided into static particles and dynamic particles on train window. Static particles used to simulate particle of attached to train window. Dynamic particles use to simulate particle of moving on train window. Again, plane of train window will be divided into several lattices. To lattice as the basic unit, papers give a measure that raindrop move on train window. Using OpenGL platform draw the track left by raindrop sliding. And using OpenGL Performer draw the wiper on train window. The wiper function has been achieved. Finally, using programmable GPU technology change the fixed program on GPU. Using the OpenGL platform render the physical effect of raindrop based on the train scene simulation.In this thesis, an ultimate simulation of particle on train window has been achieved. The result of simulate particle on train window improved rain and snow weather realistic visual simulation, and fulfill the requirements of real-time visual simulation. The effect of rendering meets the requirements of scene simulation of train simulator.