gregjenings

I found the solution! Thank you all so much for your help and suggestions so far. I really appreciate everyone who took the time to point me in the right direction — it helped me figure this out!

Tanto
Tanto

Thank you so much, Tanto! Really appreciate the help and the clear explanation. You saved me a lot of time and frustration with this.

freshbaked
Hello, I got your file working. I object merged the points inside the copytopoints and changed it to use "Internal SOP" as the point source. I don't know the reason why this works and your method didn't, maybe something to do with how the attribute is translated from the sopcreate.

Hopefully someone who knows Solaris better can chime in with an answer.

EDIT: Found this thread: https://www.sidefx.com/forum/topic/100624/ [www.sidefx.com]
Sounds like a limitation with copytopoints currently.

Thank you, freshbaked, for the solution — really appreciate your help!

I have one related question. I’m trying to create a moving/chasing light effect along an emissive strip, where the whole strip stays bright while a higher-intensity/different-color section moves along it and produces Glow/Bloom.

I’ve attached my Houdini setup file. Could you please take a quick look and let me know what I’m doing wrong, particularly with the emission, moving mask/attribute, material, or Glow/Bloom setup?

If there’s a better approach to achieve this effect, I’d also be happy to learn about it.