Hello, I have a grass texture:

I use it in my 2d-game. I want to animate it by code, without any predefined animations.

The grass should interact with wind. So when the wind is stronger, the grass should stoop into need side more.

First version of animation I made using sinusoid function, but such animation is a bit ugly, because the base of the grass moves left/right like all another part of picture. And with sinusoid I'm not able to regulate stoop of the image.

Any advices?