NoteWhen creating particle
collision events using nParticles, be aware of the following:
- The collisionGeometryIndex output attribute
is not supported for nParticle collision events in Maya 2010.
- nParticle collision events pass the name
of the Nucleus object that the nParticles are colliding with to
the event callback rather than passing the geometry's name.
- The Nucleus ground plane cannot be the
target of an nParticle collision event.
