Study On The Dynamic Simulation Technologies Of 3D Costume Material On Body

This paper is mainly on the study of the simulation of costume material on the body which is drove by body motion and other external forces and its showing in 3D environment. Firstly, the author analyzes the present researches, development trends and the problems about fabric CAD. It is found that mass-spring model is charactered by simple-structure, easy-calculation and parameter random-set, so the mass-spring model is adopted. Based on the analysis of the physics performance and previous cloth models, an improved mass-spring model is proposed and adopted, then the kinetics analysis is made on the improved model, the differential equation for each mass is deduced. To solve the differential equation, fourth-order Runge-Kutta method is a good candidate for obtaining the dynamic cloth shape in 3D space. However, the mass-spring model has"super elastic"effect in simulation. In this paper, compared to the previous methods of dealing with this problem, the feasible method is proposed by constructing a non-linear function to adjust"super elastic"effect of cloth model, so the problem is settled effectively. In the paper, a function and algorithm for wind is also proposed, improving the computing efficiency and display effect. Finally, the author solves the texture pattern's scaling and rotating with the texture mapping transform technology, solves the problem of the texture's losing shape in the course of mapping with Mip-map technology, simulates the environment lighting to the model.By applying such design ideas, the author realized the 3D-based costume material's surface reality sense on the body.Our next work is to build a whole 3D-based costume material exhibition system which can be used to design and exhibit.