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Old 02-08-2013, 04:58 PM   #1
New Member
Matthew Spencer
Jeff Koons
New York, USA
Join Date: Jun 2012
Posts: 20
Change polygon color when collision detected

Hi, this may be extremely complicated,maybe not!

I've looked into Xpresso solutions but I seem to be spinning my wheels.

Essentially I'm trying to visualize interference detection. When an object passes through another object, I want just the intersecting polygons to change color (not the whole object). The movement would be animated via timeline (not gravity).

It seems like a ghost tag should be involved? I can't seem to connect the dots.

Any ideas?

Thanks in advance.
Matthew Spencer | Jeff Koons Studio
Old 02-08-2013, 06:06 PM   #2
NiklasR's Avatar
Niklas Rosenstein
Join Date: Jan 2011
Posts: 440
Have you tried using the Collision node in "Object" mode and inserting selection-tags?
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Old 02-08-2013, 06:30 PM   #3
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Matthew Spencer
Jeff Koons
New York, USA
Join Date: Jun 2012
Posts: 20
Niklas, that's PERFECT.

If you feel like explaining, would you mind giving a breakdown of what you did? I understand the structure of the Xpresso, but I don't quite understand how it knows which material to assign.
Matthew Spencer | Jeff Koons Studio
Old 02-08-2013, 07:29 PM   #4
Steady now!
tcastudios's Avatar
Join Date: Jan 2003
Posts: 4,247
Select the Collision Node and in the Attribute Manager,
right click a relevant parameter -> Show Help.
There it is fully documented

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Old 02-09-2013, 12:53 PM   #5
coen bouman
Amsterdam, Netherlands
Join Date: Aug 2002
Posts: 137
The proximal shader shader might be useful too.
Old 02-09-2013, 12:53 PM   #6
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