Chaos Corona Forum
Chaos Corona for 3ds Max => [Max] Feature Requests => [Max] Resolved Feature Requests => Topic started by: peakyfreak80 on 2019-01-10, 15:44:51
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There seems to be a problem when using overlapping geometry and the CoronaDistance Map. Where it overlaps, you get triangles of the "far" color. Could anyone help with figuring out why this is happening and if there's a solution?
Images attached of the viewport geometry, settings, and the rendering.
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Sometimes, adding a chamfer modifier to the distance object helps with similar problems in the Distance Map. I've seen problems that were caused by overlapping meshes that I couldn't resolve, though. You may have to remodel overlapping objects to be one continuous geometry (or use boolean), this should help.
The Distance Map has a number of issues, this is only one of them. I'm planning to post an extensive problems/request thread about this map with the intention to get our beloved developers to make it more robust and flexible but didn't have the time to do so. Hopefully soon.
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Thanks, Pokoy. I'll try the chamfer trick. Unfortunately, the real geo I'm using is all procedural (a.k.a Railclone) so turning it into one piece of booleaned geometry wouldn't really be possible.
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Yeah, it's really frustrating. The Distance Map is a godsend when (ab)using it for road marks, unfortunately it's one of the cases where it reliably fails... Hope it can be fixed.
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So I wasn't able to really 'solve' this problem and had to come up with a work around. It does appear that it only happens when you have the "Inside Color" checked. with that unchecked, anything that overlaps works exactly how you'd expect it to. Seems like a bug in the shader.
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+1
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+1
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"Distance map issues" is on my most wanted fix/improvement list, so +1 :)
Good Luck
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This is due to the imperfection of current inside detection method. We will do our best to improve it, but it may take a lot of time.
(internal note id=309726115)
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Improved in the newest daily!
Some further improvements possible.
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Just checking in, I have been following this issue for quite a while now.
Wanted to notify that this problem is still apparent in Corona 4.
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How about in the newest daily of Corona 5, as Marcin mentioned?
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Not sure if anyone is still having this issue but..I am...until I found I could just grab the distance texture shader from VRAY - it doesnt have whatever bug the corona one has. Yep - using the VRAY distance map in corona seems to work without the overlap issue.
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As a side note...VRAY distance map used to have this same issue and it was resolved a few versions ago. (Prior to VRAY next) Maybe you can as them what they did ? :P
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Bump,
This had never been resolved to my knowledge.
Any chance of looking at it in Corona 10?
Would be great to be able to use intersecting objects that would produce intended results in "inside color"
Thanks
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+1 would love for this feature to be working as intended :)
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Hi Ink Visual,
Are you still having issues with this? Are you using Fast or precise mode in Corona Distance Map? Can you provide a simple scene and some repro so we can better understand the issue you are experiencing? Looking forward to it.
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Hi Avi,
Yeah, we use this future on daily basis for road marks / tyre marks etc, with newest corona version, so the issue is defo still there.
I will try to save the scene out for you today/tomorrow!
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Hi,
I understand, We have logged this request in our system. It would still be nice to provide any problematic scene so, we can test it out internally.
(Internal ID=1086274973)
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Hi Avi,
I just uploaded the scene through Chaos Support requests.
My ID case #105020.
Sorry it took a while, if anything else is needed, let me know please.
Thanks!
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Hi,
Thanks, we have received it.