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DOI:
Journal of Software:2004.15(zk):278-286

飘雪场景的实时模拟
王长波,王章野,夏添,彭群生
(浙江大学 CAD&CG 国家重点实验室,浙江 杭州 310027)
Real-Time Simulation of Snowing Scene
WANG Chang-Bo,WANG Zhang-Ye,XIA Tian,PENG Qun-Sheng
()
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> 中文摘要: 自然景物的真实感模拟一直是计算机图形学中的一个富有挑战性的课题,而飘雪场景的实时模拟尤为困难。因为它涉及到复杂的风场建模和风雪的交互作用.在充分考虑风雪具体物理特性的基础上,通过对经典Boltzmann 方程进行离散来构造三维风场,并根据风雪的交互作用规律,建立起雪的飘动、沉积、侵蚀等变化规则,进一步采用一系列简化和加速绘制的方法,具有真实感地实时绘制出不同风速下不同降雪量的风雪场景.
Abstract:Realistic simulation of natural scene has been one of the most challenging tasks in compute graphics.And it is even more difficult to real-time simulate snowing scene because the complex modeling of wind field and the interaction between wind and snow are involved.In this paper,based on the fully consideration of the physical characteristics of wind and snow,a three-dimensional wind field is constructed by discretizing the classic Boltzmann equation.According to the interactive laws between wind and snow,the changing rules of snow’s falling,deposition and erosion are then established.Finally,by adapting a series of simplification and accelerating rendering techniques,realistic wind-driven snow scenes under different speeds of wind with different snow falling amount are rendered in real time.
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基金项目:Supported by the National Natural Science Foundation of China under Grant No.60033010(国家自然科学基金);the National Grand Fundamental Research 973 Program of China under Grant No.2002CB312101(国家重点基础研究发展规划(973));the National Natural Science Foundation ofChina and Research Grant Council of Hung Kong(国家自然科学基金会NSFC-RGC联合资助项目) Supported by the National Natural Science Foundation of China under Grant No.60033010(国家自然科学基金);the National Grand Fundamental Research 973 Program of China under Grant No.2002CB312101(国家重点基础研究发展规划(973));the National Natural Science Foundation ofChina and Research Grant Council of Hung Kong(国家自然科学基金会NSFC-RGC联合资助项目)
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王长波,王章野,夏添,彭群生.飘雪场景的实时模拟.软件学报,2004,15(zk):278-286

WANG Chang-Bo,WANG Zhang-Ye,XIA Tian,PENG Qun-Sheng.Real-Time Simulation of Snowing Scene.Journal of Software,2004,15(zk):278-286