Hello,

I want to generate particle inside a Translating/deforming geometry.
But when I use I collision POP, half of the particle just pass through the object as no collision object exists.
I worked aroud that for a week but I didn't fing the solution. So, I grouped and killesd the particles that passed through but I would like to enderstand why some collied and some don't :?:

Well , Let me know guys what you think about that.

Thank you

A few things to look at:

• In the Collision POP enable deforming geometry… It seems to suggest that it only works with triangulated geomtry. I'm not sure if simply triangulating the geometry on input will work since the triangles may change from frame to frame, would need some testing.
  
• If your particles or deforming geometry are moving fast particles can sometimes sneek through, you can try oversampling.
  
• Not sure if it would help but you could try a small value in the hit tolerance. This sets the distance from the surface at which a particle collides, but may give it some virtual thickness which may or may not keep particles from penetrating.

Oops… heh…

Didn't noticed there were two of these threads.