Rendering Grass Blowing in the Wind with Global Illumination
Rendering Grass Blowing in the Wind with Global Illumination作者机构:Computer Science Department University of California Department of Computer Science Tokyo Institute of Technology
出 版 物:《Tsinghua Science and Technology》 (清华大学学报(自然科学版(英文版))
年 卷 期:2010年第15卷第2期
页 面:133-137页
核心收录:
学科分类:08[工学] 080203[工学-机械设计及理论] 0802[工学-机械工程]
基 金:the Japan Society for the Promotion of Science for financial support
主 题:global illumination lattice Boltzmann method plane parallel radiation transport
摘 要: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.