Imitation of Fabric Flagging in the Wind with 1/F~β NoiseLI Beibei ZHAO Zhihong GENG Zhaofeng (Information Institute,DongHua University,Shanghai 200051,China,This paper presents a dynamic simulation model,based on noise,to simulate fabric flagging in the wind.The wind noise is generated by two sine functions defined in advance.The frequencies and amplitudes of these sine functions are change- able to presenting the basic model of the fabric.In order to obtain more fabric fluctuant effect,we adopt a cosine function to achieve the fabric dynamic display effect.In the actual process,the traditional Phong illumination model is improved.Therefore, the model of simulating fabric flagging in the wind can be built successfully.Comparison with the physical model shows that it is a fast arithmetic because of adopting a new model in stead of the time consuming iteration arithmetic.It can achieve a friendly de- sign interface and an ideal simulation effect.Designers can select wind force and fabric material by controlling different parame- ters.The basic characteristics of fabric swaying in the wind are simulated efficiently and displayed vividly.noise;;perlin noise;;fabric;;dynamic model