Reserach Of Cloth Simulation Based On Physics

Cloth simulation technology is a hot research in simulation, which can be applied to digital cities, games, clothing and other fields. After nearly20years of research and development, cloth simulation technology can be classified into many methods. With greatly enhanced in the performance of computers’hardware, the advantages of cloth simulation techniques based on physical laws becomes more obvious. Cloth simulation based on spring-mass model realism in the simulation has a clear advantage, but somewhat less than in the real-time simulation. For this reason, we study deeply on cloth simulation technology based on spring-proton system. Then we figure out the reason which is hand to keep realistic and real-time, and then we find out solution to solve this problem.The key of the reality in simulation is the model, and the triangular grid is a importance factor in model building. We propose a solution which can refine and coarsen triangle mesh dynamicly, so that the triangle mesh adapt to the corresponding geometric and dynamic automatically detail during the simulation:high precision grid for fold zones, and smooth area for low grid. In order to enhance system in real time by this reducing unnecessary grids, the work done by the paper are:First, research and analysis cloth simulation system based on the spring-proton, and establish the spring-mass model as the rule of equality, which is prepared for the reconstruction of the triangular grid.Secondly, study the reconstructed triangular grid technology to explore factors that could affect the accuracy of the triangle mesh. With the help of these factors, we calculate the longest length of the triangle meshs, then we remesh using some operators as split, flipped and collapsed..Then, we study real-time collision algorithm to analyze the current distribution model of the forces, establish the dynamic equations of the model, and introduce bullet physics engine, animation and simulation of cloth collision response.Finally, we build a platform to create a simulation system. Simulation examples demonstrate the usefulness of dynamic grid technology redistricting in cloth simulation, which can solve out the real-time cloth and authenticity in simulation.