基于点采样的三维动画研究  

Study on 3D Cartoon Based on Point-sampled

作　　者：王欣[1] 张典华[2] 

机构地区：[1]中国民航飞行学院计算机与信息工程系,四川广汉618307 [2]西南科技大学计算机学院,四川绵阳621010

出　　处：《计算机应用研究》2005年第11期244-246,249,共4页Application Research of Computers

基　　金：中国工程物理研究院院外基金资助(1999050235);四川省科技厅青年软件创新工程项目资助(04hj027-027-320)

摘　　要：建立了一种对高弹性、高塑性物体进行动画模拟的新方式。本算法利用点采样的方式表现表面,使用采样分裂和聚合以适应动画中采样密度的变化。将弹性力学中的理论应用到三维动画中,使用MLS法计算应力、张力、弹性体力,使用可变张力来模拟塑性变化,利用向量位移进行了动画模拟,并使用了多种曲面表示提高表面质量。动画可表现融化、流动、分裂、融合等弹性、塑性变化,可用于实时交互也可用于高质量的离线渲染。A method is presented for animating objects with stiff elastic and highly plastic. The surface based on point-sampled can be split and merged to dynamically adapt the surface sampling density during simulation. The theory of elasticity is used in the simulation, stress, strain, elastic body force are computed in the method of MLS. An elegant simulating plastic behavior is by using strain state variables. The approach based on vector displacement is to simulation the deformation of the model. The multi-representation approach is used to improve the quality of surfaces. The system is capable of simulating a wide range of elastically and plastically deformable objects, which can melt, flow, split and merge. The simulation is suitable for both real-time interaction as well as high quality off-line rendering.

关 键 词：动画 点采样 虚拟现实 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]