提出一种流体力学模型结合粒子系统的卡通烟雾实时模拟算法。通过Navier-Stokes方程建立烟雾流体场的物理模型,以保证运动轨迹真实感。为粒子属性引入浓度函数和作用半径,从而只需少量粒子就可快速获得浓度场分布。为了实现卡通化效果,使用代表动画师个人风格的卡通图元在不同浓度区域进行纹理贴图。试验结果证明,该算法高效快速,能实时生成自然生动的卡通烟雾效果。

This paper presents a real time cartoon smoke simulation algorithm based on fluid dynamics and particle system.The smoke path is controlled by the Navier-Stokes equation to get an impressive effect.The density function and working radium are added to the particle properties,thus very little particles are needed to generate the smoke density field.To get the cartoon effect,primitives designed by animators are mapped to the scene according to the smoke density during the rendering process.Experimental results show that the algorithm is simple and effective to achieve real time cartoon smoke simulation.