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Best technique for unwrapping UVs from Model?
Posted: Sat Apr 26, 2008 12:57 am
by jvanmetre
What's the best way to unwrap the UVs from a model of squeeze tube?
I'm currently using a Rhino plugin that unwraps and I'm running into an issue where I'm creating textures and reapplying to the model and since the tube isn't a straight cylinder, my decal is distorting towards the top as it is applied.
Suggestions much appreciated.
jvm
Posted: Sat Apr 26, 2008 3:34 am
by jvanmetre
Here's an image of the issue...
jvm
Posted: Sat Apr 26, 2008 4:45 am
by JDHill
I don't have any UV-unwrapping tools, so here's one way you could approach it that doesn't use any...
a. what is the size of each side of the tube? Say it is 1.0 units at the end (top), then it is 1.57 (i.e. 0.5 x PI x diameter) units at the base. So, you might make an image like this:
b. now, stretch the image using a perspective tool:
c. after applying the map to the geometry, and doing some Dir > SwapUV and Dir > UReverse, you should have this:
(the left image is the original map, the second and third show the stretched one)
Hope it helps,
JD
Posted: Sat Apr 26, 2008 2:31 pm
by tom
Also you can consider PS3's Wrap in custom mode with a few percentage bend.
Find it under Edit / Transform / Warp
Posted: Sat Apr 26, 2008 3:06 pm
by JDHill
Sure, you may consider that...if you have PS.
Posted: Sat Apr 26, 2008 4:04 pm
by ivox3
I'm just curious what plug-in unwraps in Rhino ..... ?
Posted: Sat Apr 26, 2008 5:22 pm
by jvanmetre
ivox-
It's "UnrapRenderMesh" from the command line and is loaded when needed ...I pulled it off of the Rhino board but the link from the plugin says...
www.cg3d.de
jvm
Posted: Sat Apr 26, 2008 5:45 pm
by ivox3
thanks for that ..
Did you mean the Rhino main page Resources board ?
That link is taking me to a locked door.
Posted: Sat Apr 26, 2008 6:10 pm
by iker
ivox3 wrote:thanks for that ..
+1
ivox3 wrote:That link is taking me to a locked door.
Yes, it seems there's nobody at home
Posted: Sat Apr 26, 2008 6:12 pm
by jvanmetre
ivox-
Lost then found post....
http://news2.mcneel.com/scripts/dnewswe ... 8192&utag=
Check the bottom of the post...you'll see unwraprendermesh.rhp
Let me know if it doesn't work and I'll send you an email.
jvm
Posted: Sat Apr 26, 2008 6:18 pm
by ivox3
There we go ...
Interesting little plug .....
Thx Thx.
Posted: Sat Apr 26, 2008 6:41 pm
by jvanmetre
If you've got thoughts on the Rhino plugin please share! I'm trying to better understand texture mapping...I've also got C4d's Body Paint and I've just never developed any kind of workflow with it.
jvm
