摘要
针对目前河流仿真所存在的计算效率低,渲染效果不够真实的问题,介绍了一种基于物理规律的河流实时仿真的方法.提出了一种Poisson圆盘分布的算法,可实现屏幕空间的优秀的分布样式,该算法产生的分布粒子用于表达河流的速度场,进而重构河流表面;采用一种纹理精灵的技术,通过纹理的动态访问和纹理混合,有效地实现河流表面的渲染.仿真实验证明:该方法可以产生渲染效果非常逼真的河流视景,并能够满足实时仿真的要求.
To solve computation overhead problems and to improve plausible visual effects,a novel real-time river-simulating method based on fluid dynamic formula was introduced.A Poisson disk distribution algorithm to achieve a well-structured distribution pattern in screen space was proposed.The algorithm generated distributed particles to depict the river velocity field and to reconstruct the water interface.A texture sprite technique was used to render the river surface efficiently by dynamic accessing and blending to textures.Simulation results show that the presented method can produce a physically plausible flowing river scene and it meets the requirements of real-time simulations.
出处
《北京航空航天大学学报》
EI
CAS
CSCD
北大核心
2012年第12期1649-1652,共4页
Journal of Beijing University of Aeronautics and Astronautics
关键词
虚拟现实
Poisson圆盘分布
河流仿真
纹理精灵
纹理重构
virtual reality
Poisson disk distribution
river simulation
textures sprites
textures reconstruction
