Paint attribute with objects

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How can I use an object to paint an attribute over another object.

I have a ball that rides over a grid and where it touches it paints an attribute.

I am using transfer attributes but since it updates frame by frame it doesn't leave the paint trails on the object.

I hope I could be clear, any help would be appreciated.
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You can use a CHOP for that. See attached file.

Attachments:
makemecool.hipnc (57.9 KB)
coolme.jpg (11.7 KB)

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Another option useing trialSOP and cache based on Macha example..

Attachments:
makemecool_152.hipnc (79.1 KB)

Un saludo
Best Regards

Pablo Giménez
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Cool examples!!!!

Thank you very much for the help!!

I like the CHOP solution, but it is a little slow for what I want to do, I want to to use it with a sop solver in a simulation, so if I use the chop solution it´s gonna to take a while.

Is there a way to do it with vops? I tried to do it but I didn´t had success.

Anyway thanks very much for the help.
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Here is a similar post:

http://forums.odforce.net/index.php?/topic/10797-keep-attribute-value/page__hl__attribute%20simulator__fromsearch__1 [forums.odforce.net]
Jason Iversen, Technology Supervisor & FX Pipeline/R+D Lead @ Weta FX
also, http://www.odforce.net [www.odforce.net]
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Thanks!!!
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