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Musetatron's Avatar
Old (#1)

Can i stretch these two UV shell which has the same vertex count, into square shape (or other shapes but the two have to be the same shape) and stacking them, occupying exactly the same UV space on every vertex? I want to save texture space on a long blobly object. this is just an example, but the real object will have like 50 uv shells that need stacking.

Last edited by Musetatron; 08-30-2015 at 02:29 AM..
Offline , null, 19 Posts, Join Date Dec 2014,  
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Musetatron's Avatar
Old (#2)
I solved the stack with copy/paste in 3d-coat.
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Urzaz's Avatar
Old (#3)
I'm not positive this is what you want, but there's an old thread on here that saved my bacon when I was recently trying to UV a bunch of poly strips.

1) In the UV Texture Editor, Polygons > Unitize will make all selected UV faces fit the UV space. So a bunch of squares stacked on top of each other.

2) Select all the edges of your shell, then deselect the outer edge loops, so only the edges that should be joined together are selected. "Move and Sew UV Edges" will sew all your unitized UVs into a strip of squares. In your case you have a loop, so you'll need to deselect an edge where you want the seam, too.

3) From these even strips you could use scaling and grid snapping to fit them to the UV space. For me I used Polygons > Unfold with a horizontal constraint to deform the UVs to fit the geo better while keeping a nice horizontal shape.

3DCoat is great but sometimes you won't want to go into it for stuff like this, and this a technique I'm super glad I know now in Maya.
Offline , line, 91 Posts, Join Date Jan 2013, Location Arkansas, United States  
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m4dcow's Avatar
Old (#4)
You can do what Urzaz says to map those cylindrical bits into rectangles, then split them where you want overlaps.

To stack them just snap the pivot to a particular vertex (hold d and v), and then snap the shell to a corresponding shell to stack. Alternatively there are scripts out there that will align UV shells.
Offline , polycounter, 1,192 Posts, Join Date Jan 2010, Location St.Lucia, West indies  
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