| Summary: | 碩士 === 國立交通大學 === 多媒體工程研究所 === 102 === In this thesis, we propose a method of simulating and rendering dynamic snow. Snow is simulated using a combination of particles and grids. Mobile snow particles are simulated using discrete element method. Piles of immobile and invisible snow particles are reduced and converted into grid cells. Particles are connected by springs to simulate the brittle properties of snow. A conversion method between snow particles and snow cells is presented. Each particle is rendered as a series of concentric, semi-transparent, textured shells containing samples of the ice crystal geometry. Half-angle volume slicing technique is used to compute the lighting between the particles. Using our rendering technique, we are able to replicate some of the visual effects of snow, such as rough surfaces and glittering effect.
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