Opengl实现的旗帜飘动效果，三维场景中三个旗帜随风飘动，比较逼真。注意要有opengl库-Opengl achieve the banner wafted effects, 3D Scene 3 banner of the wind wafted more realistic. Attention to the need opengl

opengl 描述的是鱼动态游动的效果，效果逼真，值得参考-opengl describes the effect of fish swimming dynamics, the effect realistic, it is also useful