Uv copy within the same object

[leach]

hi.

ok, heres the situation. i have a low poly model that is all one mesh. ive setup my UV's for the left arm and tweaked away till i was happy. the arm consists of two planar projections, for the inside and outside of the arm.

now, how do i go about copying the uvs for the left arm, to the right arm, which currently has no uv's?

ive tried the clip board actions> copy/paste whcih the manual says should tranfer uv's within the same mesh, but nothing happns for me.

help, anyone!

thanks

leach

[ame]

You can use:

POLYGON > TRANFER [O]

and choose UVs.

This should work.

-a

[leach]

im afriad this doesnt work. it works fine for two seperate meshes which are identical, but i need to copy the UV's from one arm, over to the other arm, which has no uv's, and is within the same mesh.

also, the transfer option only seems to allow me to transfer uv SETs, which is not what i want to do, as i need everything within the same set...i think!

basically im just trying to save some time as im going to be using the same texture for each arm, so therefor i should be able to use the same uv's, but mirrored, right?

thanks for any help

leach

[fsx]

if the arms are identical, just mirror it after mapping.
delete one arm, detach the other, copy it, scale it -1 on the x axis, combine the parts and merge the vertices.
doesnt take much time at all.

[leach]

yeah, thats pretty much what i ended up doing in the end, i was just hopeing there was a more intuitive way without all the extracting, mirroring, deleting, merging, etc etc!!

so i take it that you cant copy uv's from one object to another, unless they are exactly identical, cause thats annoying, for example, if the left arm is only slightly different in that it has a few extra vertices to change the shape slightly. i wouldnt be able to just use the uvs from the other arm and change them slightly, but would instead have to generate and tweak a whole new set of UV's....cause that stinks! it really does. surely this should be possible.

well, thanks for the reply.

leach

[fsx]

well thats not possible without some tweaking, granted, but especially on a lowpoly mesh it shouldnt be so hard to achieve though.
you made the second arm from the first, so you must know where the extra vertices went. just add the same amount of vertices on the first (mapped) arm, at approximately the right places. copy the uvs and delete the extra vertices again. no or very little tweaking of uv's is required now for the second arm.

anyway, still beats remapping the whole thing by a long shot, be a little innovative!

on a sidenote, being a lowpoly modeller myself, i always start out with a cylindrical mapping on a character's arms. this way you can map the whole arm in one piece, faster and less seams....just a thought

[leach]

thanks for the tips, i'll keep that in mind for my next project.

leach

[joojaa]

Actuay you could devise a method to use realword space as source for uv transfer... would proobably be damn slow to script and have many many problems but could work.

[fsx]

sounds fascinating but...
what do you mean...elaborate please?

[leach]

ok, i have one other question about this UV stuff.

is it possible to copy the UV's from one uv set to another, for example, i have my own uv set with all the arm leg and torso mapping in it, and i want to copy this to the default uv set, map1.

please, for the love of god, tell me this is simple!

leach

[fsx]

hehehe dont worry this one is.
make sure you've got your own set selected
(uv text editor > image > uvsets > ....)
then
uv text editor > polygons > copy current uvset > []
in this dialog type the name of the uvset you want to copy to, press apply and be happy

[leach]

wohoo, at last, something that was simple!! thank you so much for you time and patience with this, if i ever have any more problems with uv stuff, i know where to come!!! and thats a threat !!

thanks

leach