How to make x-gen grass collide with other objects and wind?

[Anonymous]

I've tried to figure out how for about a little over a year and I don't know how to do it. I know how to do it with paint fx to some degree, but not with  x-gen at all. Now if I make hair I know I can make the hair collide with the mesh the hair's attached to, but not other objects. (Another thing that's related to my question is that I don't know how to make xgen grass react to wind either. Can you make the x-gen grass collide with objects, and also have it moving in some wind?)

[Michael_Todd]

There is a collision modifier. Make an alembic cache of the object/s you want to collide against and add the collision modifier and point the to cached geo. For wind effetcs from a Maya field, you'll need to use an animwire or control wire modifier. With an animwire modifier, you can create a dynamic nHair system and that can be affected by fields and collisions but as only the guides will collide, you'll still need a collision modifier to have the primitives collide with the geo.

This is covered in the documentation:

XGen Collision Modifier

XGen Anim wire modifier

Cheers

[sean.heasley · Accepted solution]

Hi @Anonymous

To add on to this, here's a video that shows a simply wind modifier with a feather created via Xgen. The same workflow can be applied to grass.

[Anonymous]

Thank you so much for informing me on this. I've tried getting help about this before from my teacher, but I feel like she focused more on the fundamentals than stuff like this. It's greatly appreciated.