Procedural wind. Gusts are scrolling noise along direction plus a travelling ripple.
direction
World-space XZ direction the wind blows towards. Normalised internally.
Noise frequency in 1/metres. Smaller = broader gusts.
How fast gusts travel across the field.
How far blades bend. 0 = still, ~0.35 = breeze, 1+ = storm.
Procedural wind. Gusts are scrolling noise along
directionplus a travelling ripple.