Research On Realistic Simulation For Wetting Effects On Cloth

The simulation of the wetting cloth is one of the important research subjects in computer graphics, which can be widely applied in the field of business, film and virtual reality. With the development of computer hardware technology and the further study of the certain field in physics, cloth simulation and fluid simulation, which involved in our research, has obtained considerable development. But there are few researches on the simulation of the wetting cloth. Aiming at this problem, a system designed for simulating wetting cloth has been achieved.This thesis focuses on the study in three aspects:Firstly, various physically-based cloth models are introduced and compared to find out their advantages and disadvantages. Considering the properties and structure of cloth, we improve the mass-spring model to develop a new model named porous particle model, which meets the diffusion requirement. Next, after mechanical analysis upon the model, we use Eular, mid-point and Runge-Kutta integration to simulate the movement of the wetting cloth. To achieve real time effect, the collision detection method based on simple regular rigid objects is adopted.Then, we analyze the diffusion processing according to the Darcy's law, and propose a method to simulate how water diffuses in the cloth. By this method, the diffusion processing and the cloth movement can be simulated synchronously.Finally, we use the multi-texture mapping technology to demonstrate the variation of the wetting cloth materials, which can achieve the strong sense of reality.The results show that the proposed system can lively simulate the wetting cloth in real time, and has high computational efficiency and strong extensibility.