Jump to content

Use collision geometry as a mask for Pyro


Recommended Posts

I have a video file which I have tracked (PFTrack) and imported into Houdini. The video has a bridge in it which I am creating a crude replica for the purposes of creating some collision geometry for a pyro effect. 


The collision is working fine with pyro, however I want to: 


  1. Not render the collision geometry (so I deselect it, no problem)
  2. Have the collision geometry mask the pryo smoke as if it were rendered in the scene


I.e. The smoke starts under the bridge, collides and works its way to the edge then up the side. I don't want to see the smoke until it gets to the edge. but without the geometry shown, it's just on display in the scene. 


How to I get the geometry to hide / mask the pyro effect?

Link to comment
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...