基于Poisson圆盘分布的河流仿真技术

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.

River simulation based on Poisson disk distribution

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.