一套极为逼真的三维仿真,在算法上非常值得大家去学习的,有风吹过的草,有白云飘过的天空,有效果非常好的水-A set of extremely realistic three-dimensional simulation, the algorithm is very worthwhile for us to learn, with the wind over the grass, the sky has been白云飘have the effect of very good water