Face Normal Collision

[maxtorag]

Hi guys!
Is there a way or a node able to solve the one-sided particle-object collision?
By default, particles in maya collide with connected surfaces on both sides not taking into account face normals or double-sided attribute. I would need to achieve something similar to realflow particles, where you choose which side of surface will particles be colliding with.
Thanks a lot!

[joojaa]

make 2 surfaces one with normals the other way.

[maxtorag]

joojaa, maybe you did not understand what I want...

I need a particle object in MAYA to collide with a certain surface only from face normal side (i.e. one side), and "fall through" the other. In Realflow you can just switch which side particles collide with (inward, outward, both), but in Maya, the collide by default in mode "both" and I don't know how to change it

[joojaa]

You really cant particles dont obey nurbs or poly normals . You could make collison layers tough. Or a collision event and chek wich side is coses. Or make them die on collison and emit with same values within another particle system that has different colliders.

Anyway try using a polygon surface instead and use rigdbodies they obey polygons normals (even when you dont wish they do so)

[maxtorag]

hm...that collision event could solve the problem in my scenario...
but imagine that I have 15 layers of surface and I need random particles to get stuck on one of them and be able to fly back to space through the above surfaces and on their way back get stuck on the top one. kind of overkill doing it with events...

anyway, how do you make a particle emitted on collision die event to have all the PP values of the original=dying one? (I would need it to inherit all my custom PP values).

[mayacner]

QUOTE(MaxtorAG @ 07/11/08, 04:27 AM) [snapback]288213[/snapback]
anyway, how do you make a particle emitted on collision die event to have all the PP values of the original=dying one? (I would need it to inherit all my custom PP values).

you could use the emit command to make the new born particle's attributes consistent with the original one.