Research On 3D Cloud Simulation Technology Based On Particle System

The simulation of irregular objects in the natural world has historically been one of the important research directions in computer graphics.As a common natural phenomenon,cloud has a large randomness,and extremely complicated interaction with light which makes the simulation of three-dimensional cloud become one of the most challenging projects in computer graphics.A three-dimensional cloud simulation method based on particle systems is proposed to fix the issues with the current three-dimensional cloud such as lack of realism and real-time simulation.First of all,according to the characteristics of cumulus particles,particle systems are used to generate particles at random,and these particles are given initial color,size,shape,and other features.Secondly,since the particle system has a large amount of calculation,in order to improve the real-time performance,this algorithm solves the cloud's dynamic equation on the GPU via OpenGL's GLSL,updates the cloud particle's properties,realizes the dynamic of the cloud,and reasonably balances the processing load of the GPU and the CPU,The efficiency of graphics generation is improved as well.Thirdly,illumination model is combined to simulate the actual interaction between clouds and light and improve the realism,and in order to expedite the rendering of the cloud,impostor technology is introduced to accelerate the rendering of the three-dimensional cloud without affecting the reality.At last,through the Visual Studio2013 simulation platform,the three-dimensional effects,dynamic effects,lighting effects and real-time performance of the cloud are analyzed.After analyzing the results,it can be recognized that the three-dimensional cloud simulation method implemented in this paper realizes the three-dimensional cloud real-time scene roaming and gives the observer a strong sense of reality and immersion.