The Research And Application Of Particle System In The Visual Simulation

In the virtual simulation scene, the natural sceneries such as fountain, fire, water-stream, rain and snow have anomalistic, dynamic and stochastic features. The special landscape model is more complicated, and needs a large number of computing in real-time player. In order to ensure the real-time characteristic of visual simulation, modeling of special landscape has been a hotspot in the field of visual simulation and computer graphics research.Particle system is an effective method for representing fuzzy effect of dynamic and anomalistic objects of nature. It gathers a large number of particles to affect a scene flexibly. It structures the complex fuzzy objects which are difficult to construct in traditional computer graphics by simple particle elements. It can also reflect the dynamics and immersion of the sceneries with highly reality. Particle system is one of the main research content in the virtual technology of reality.In view of the particle system modeling flexibility and effectiveness, the paper studies the basic theories and applications of the particle system,and discusses method of modeling and the common formula of the particle attributes which go for the scene dynamic simulation. Then, the paper chooses the special landscape to simulate the anomalistic, fuzzy and dynamic characteristic under VC++ by the OpenGL function. Finally, the paper transplants the special landscape which realizes by the OpenGL to the virtual reality by the callback function and fusion of Vega. It realizes an example of virtual landscape based on particle system.In the paper, a new idea is using Newtonian to simplify particle model. It guarantees the real-time characteristics of the special sceneries of better effect during the virtual simulation.The experimental result of visual simulation shows that the particle system algorithm is more effective, and modeling special landscape produced by the particle system algorithm is more flexible and efficient. The model of the special sceneries of better effect can produce the vivid effect of three-dimensions in virtual simulation.