清华大学学报（英文版）
清華大學學報（英文版）
청화대학학보（영문판）
TSINGHUA SCIENCE AND TECHNOLOGY
2010年
2期
133-137
,共5页
格子Boltzmann模型%照明%光照模型%时间变化%弹簧模型%连续分布%微分方程%运输系统
格子Boltzmann模型%照明%光照模型%時間變化%彈簧模型%連續分佈%微分方程%運輸繫統
격자Boltzmann모형%조명%광조모형%시간변화%탄황모형%련속분포%미분방정%운수계통
global illumination%lattice Boltzmann method%plane parallel radiation transport
We have simulated a time varying wind field using the lattice Boltzmann model, and its effect on blades of grass with a simple mass-spring model. We present a global illumination model for multiple scattering of incident sun and sky illumination within the field of grass. We model the grass as a continuous distribution of infinitesimal colored scattering flakes and solve a system of differential equations for the radiance transport. We repeat this for a collection of grass bending directions and amounts, and then interpolate the solutions when rendering animations of blowing grass.
