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3 Dimensional Chat / Mirror uvs or not?

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SamHH
17
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Joined: 9th Dec 2006
Location: Vermont
Posted: 21st Dec 2008 02:33
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Are there big downsides to mirroring uvs? If so, what? If not, cool. I know that mirroring prevents some creativity with asymmetrical textures, but are there other problems with mirroring uvs?
Thanks,
SamHH


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Crav3
16
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Joined: 14th Oct 2008
Location: Down Under
Posted: 21st Dec 2008 02:58 Edited at: 21st Dec 2008 02:58
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yes, normal mapping can screw it over which creates artifacts on the 3d models. And also texture baking can create artifacts, though it is still possible to normal and bake maps with mirrors, all thats required is baking it Un mirrored, then mirror it and erase the baked original space where one of the Un mirrored was.
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Strelok
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Joined: 16th Oct 2006
Location: In your cupboard.
Posted: 21st Dec 2008 03:10 Edited at: 21st Dec 2008 03:11
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Like Crav said don't mirror the Uv if you going to bake or sculpt your model.
If you just going to paint your model then its fine , although I won't do that for the parts that going to stand out.
Like the face could be better uv mapped fully .. just the stuff that people will notice.

I mirror my uv maps all the time , so I could put more details in it.

Best

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John H
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22
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Joined: 14th Oct 2002
Location: Burlington, VT
Posted: 22nd Dec 2008 12:01
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Mirroring UV's is definitely a must on some models in order to make the most of your texture space. Just be smart about how you do things, and if you mirror across a seam, you can go in afterward and 'randomize' some of the geometry a bit without messing with your UV coordinates too badly. Obviously the aforementioned situations are outstanding situations in which you wouldn't want to mirror UV's, but otherwise, yes, definitely

3D Game Art & Animation Major @ Champlain.edu
Maya | Photoshop | CrazyBump | ZBrush
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