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headus 3D scans

does red and blue lines on edges indicate a problem?

 
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Zaynt



Posts: 1
Joined: 19 Jan 2011
PostPosted: Wed Jan 19, 2011 8:43 pm    Post subject: does red and blue lines on edges indicate a problem? Reply with quote
Hi, I am uv-mapping a 3d-model for the first time and I was wondering if the led and blue lines that appear on the inner edges of my uv-shell indicate a problem?
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headus
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Posts: 2902
Joined: 24 Mar 2005
Location: Perth, Australia
PostPosted: Wed Jan 19, 2011 8:59 pm    Post subject: Reply with quote
That's a feature actually ... its called "webbing", and is applied automatically to holes when you use Shift-B on an unflattened shell. You can add and remove webbing with the T and Shift-T hotkeys.

Without webbing, holes sometimes collapse when a shell is optimized. This is because all the polys are pushing out usually to make themselves the correct flattened shape, and if there's a hole, it will shrink because that's somewhere for the polys to expand into.

With webbing, the holes push back, retaining their shape.

Phil
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SLI_Fallen



Posts: 66
Joined: 19 Dec 2008
PostPosted: Thu Jan 20, 2011 6:34 am    Post subject: Reply with quote
headus wrote:
That's a feature actually ... its called "webbing", and is applied automatically to holes when you use Shift-B on an unflattened shell. You can add and remove webbing with the T and Shift-T hotkeys.

Without webbing, holes sometimes collapse when a shell is optimized. This is because all the polys are pushing out usually to make themselves the correct flattened shape, and if there's a hole, it will shrink because that's somewhere for the polys to expand into.

With webbing, the holes push back, retaining their shape.

Phil


I was actually having some problems with that recently (webbed holes collapsing on themselves) so I just ended up pinning them like telling a dog to SIT! STAY! lol. So I cant exactly look back/recreate/explain what happened (this time) but i'll be sure to if it happens again.
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headus
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Joined: 24 Mar 2005
Location: Perth, Australia
PostPosted: Thu Jan 20, 2011 4:48 pm    Post subject: Reply with quote
"but i'll be sure to if it happens again. "

Yes, please do! I've never seen it happen myself, so I'm really curious to know what unusual geometry you might have had there to make it happen.

Phil
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