¹School of Information Science & Technology, Beijing Forestry University, Beijing 100083, China.
²The State Key Laboratory of Computer Science, Institute of Software, Chinese Academy of Sciences, Beijing 100190, China.

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Abstract—Study of rain dynamic simulation is an important research topic in computer graphics. This paper proposes a dynamic simulation of realistic rain scene based on particle system and raindrops texture. This method dissects the principle of atomization phenomenon, and fuses the raindrops’ depth texture and scene background to simulate a hazy atomization. In addition, it also introduces wind field and lightening in the rain scene so as to enhance sense of reality. Finally, the paper renders the whole scene by constructing the rain scene and applying ray tracing algorithm. The experimental results show that: the present method can simulate the rain dynamic realistically and efficiently, which is of a high practical value.

Index Terms—Particle system, raindrop texture, atomization effect, lightning simulation, ray tracing.

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Cite: Cheng Wang, Meng Yang, Xuemin Liu, Gang Yang, "Realistic Simulation for Rainy Scene," Journal of Software vol. 10, no. 1, pp. 106-115, 2015.