By considering the interference and the attenuation of water wave, we regard raindrop as an interference source to engender surface motion and imitate water wave, and get satisfactory result.

• 把雨点当作一个干扰源产生水波；在考虑水波衰减、扰动等特性的基础上；对水纹波动进行模拟；得到了较好地效果.