Quick UV question

Maya for 3D Printing - Rapid Prototyping

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# 1 21-09-2010 , 10:07 PM

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Location: Plattsburgh New York

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I always wonder. Are my UV's supposed to be straight as I can get them without too much stretching or are they supposed to bend like the object I'm uv'ing?

Picture for ease of description, both UV's in this are of the same object, one I made straight and the other one has a curve like the actual object, which one is right? I feel the one on the right is better than the one on the left, but would like other opinions.
user added image

This is the object I'm laying UV's out for, so you can see the curve that I'm talking about of the object
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- Mike

https://rhetoriccamel.blogspot.com

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# 2 21-09-2010 , 11:42 PM

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so I have tried it both ways with the numeric grid to check for stretching, both ways seemed about the same.

- Mike

https://rhetoriccamel.blogspot.com

Last edited by Rhetoric Camel; 21-09-2010 at 11:48 PM.

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# 3 22-09-2010 , 12:13 AM

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Interesting Mike....so the results were similar eh? hmmmmm I have always wondered this too. UV's are a pain to get the head around

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bullet1968

"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes

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# 4 22-09-2010 , 12:56 AM

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The purpose of UVs is so you can create a 2D texture for 3D space, right?
So if your method of creating the texture in 2D space (e.g. PS) results in a non-distorted render, you should be fine.
Another way of looking at this is to paint a straight line in your texture space. If the line is also straight on your model, you're good. This doesn't necessarily mean that the UVs themselves are in a gridlike pattern.

-stwert

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# 5 22-09-2010 , 01:48 AM

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But the whole point is too avoid stretching right?? This can be a srious pain in the butt!! I tried one texture on a car speaker for a mate and man...it took about 10 goes to get it to wrap properly!!

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bullet1968

"A Darkness at Sethanon", a book I aspire to model some of the charcters and scenes

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# 6 22-09-2010 , 02:36 AM

EduSciVis-er
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No, that's fair, I wasn't saying it was easy... I was more saying that as long as there's minimal distortion and stretching, it shouldn't matter what shape the UVs themselves are, though they'll probably be similar to the shapes of the faces.