Sorry for a newbie question, is it possible to sway the grasses with tgo reader ?
i thought twist and shear can handle it well but there is no result.
No, you'd have to adjust the objects themselves. If you'd make grass that is kind of waving in one direction and load them in a population, you could restrict the angle to 0-180 instead of 0-360 to keep them waving more or less in one way.