摘要
云的建模和渲染是计算机图形学领域的一个研究难点,对其研究有着重要的现实和理论意义。该文从建模方法、光照模型、绘制效率三个方面对云的生成仿真系统进行了研究。提出了CA与粒子系统相结合的建模方法。对于光照模型,该文分析了云的光学特性,在单一扩散光照模型基础上提出了一种模拟多重光照的简化公式。该文还运用LOD技术、提前中断技术以及空间分割技术有效地提高了云的绘制效率。另外对上述方法的具体实现也进行了一定的描述。
The modeling and rendering of clouds are difficult problems in computer graphics. In this paper, we study the simulation of clouds from the modeling method, lighting model and the rendering efficiency. We present a new modeling method which combines the Cellular Automaton method with the particle system method. Based on the analysis of the cloud＇s optics property and the single scattering model, we present a new simpler formula for the lighting model. In this article, we also improved the rendering efficiency of the cloud by using the LOD technology,stoppage ahead technology , the space segmentation technology and etc. In addition, there are some description about the implementation details of the above mentioned method.
出处
《计算机仿真》
CSCD
2006年第7期202-206,共5页
Computer Simulation
关键词
云
仿真
细胞自动机
粒子系统
自然现象
Cloud simulation
Cellular automaton
Particle system
Natural phenomena
