Posted a gif below to show you an example of what I'm hoping can be accomplished.
I know how to create the directional wind, where the angle of the sine is the same for each clump of grass. That's easy enough
What I'd like to be able to do is calculate what the angle of each grass sprite should be for a radial burst of wind, based on where the burst of wind originates from relevant to the position of each grass sprite. So rather than all moving, say, 10 degrees to the right, some will move 10 degrees to the left, some 5 degrees one way, some 2 degrees, etc. Would that be possible?