通用三维服装模型的强约束动态仿真方法

随着三维游戏和虚拟试衣要求的不断提高,服装仿真已经从布料模拟向服装动态模拟的方向发展,具有真实性、实时性、通用性与交互性的服装仿真技术有很强的研究和实用价值。针对目前算法研究中普遍存在的实时性与通用性不足,提出了一种针对任意三维服装模型的实时仿真方法,将模型顶点和三角面映射为质点的弹簧模型,以克服传统的布料解算器对三维模型的网格限制。利用简便易行的Verlet积分器提高运算效率,并对质点间的形变进行强约束补偿,防止过拉伸(超弹)现象的发生,提高了系统的稳定性。通过实验验证了算法的高效性和可靠性,并可方便地以插件或模块形式与其它软件整合。

A strong constraint dynamic simulation method for 3D garment models

With the increasing demand for quality improvement in 3D games and virtual dressing, the trend of garment simulation has shifted from cloth simulation to dynamic simulation. Garment simulation is of significant theoretical and practical value because it is authentic, timeliness, universal and interactive. Aiming at the common problems of present algorithms on timeliness, universality and over-stretching, we propose a real-time simulation method for all 3D garment models. In this method, we map the triangle faces to the mass-spring model to overcome the restriction of the traditional solver on cloth regular grid. The Verlet integrator can calculate the motion of particles and improve the computation efficiency. We perform compulsory constraint compensation for the deformation between particles to prevent over-stretching and improve the stability of the system. Experimental results verify the efficiency and reliability of the proposed algorithm. The algorithm is simple and easy to operate, and can be easily integrated with other software in the form of plug-in components and modules.