The Study Of The Figures Of Snowflake And The Realization Of The Scene Of Snowfall

Simulation of the phenomena of nature will improve lifelike qualities of virtual scene. The phenomenon of nature often comprises stochastic figures which are difference from well-regulated figures. It is difficult for conventional geometry to describe the phenomena of nature. As a result, Fractal Theory is advanced.Koch snowflake curve is a typical fractal curve. It is realized through recursive back tracking method. The process is very complicated. This paper, by analyzing the characteristic of Koch fractal curve, considers the lines which form the Koch fractal curve as vectors. Finally, the curve is easily described by Visual C++. The runtime is saved.Snowfall is an important phenomenon of nature. Because of the effects of gravity, the resistance of atmosphere and the wind, the movement of snowflake is very complicated. As a result, many processes don't consider these effects when they describe snowfall. There is lack of lifelike qualities. In order to improve lifelike qualities of virtual scene, the effects of gravity, the resistance of atmosphere and wind are considered.Some of the snowflakes will die out and some of them will come into being. So, the computer will spend much runtime in judging which will die out and which will come into being. It is easily for this process to judge them. Much runtime and memory will be saved.