Hi all, I’ve downloaded a mesh chair model and need to add textures to it. Unfortunately, the surfaces have lots of facets. Is there a way to avoid fragmentation and adjust the UV mapping for a smoother texture application?
Unwrap won’t work because there is no seam to be selected (the edges are too fragmented). also tried custom mapping and box mapping, but neither works.
Has anyone else faced a similar problem, and if so, how did you work around it? Any advice would be greatly appreciated. question.3dm (1.6 MB)
Hi @Kagura
First off, that’s a well shitty model! I’ve refined the mesh on the arm rests and upholstry - just to make the roundings rounder If you need it for a close up, I’d re-model the whole thing. If it’s just for background, here’s how I’d do it:
Make sure normals are pointing out (all but one object have their normals pointing inwards)
Weld everything up (200 degrees)
Apply box mapping where it makes sense
Manually unwrap more complex objects (in this case, the back)
BTW UV-Unwrapping/editing in V8 is fubar’ed, so this was done in V7. question_JN.3dm (8.4 MB)
Here’s a quick video on how I’d texture map this low poly mesh in Rhino 8.
@Normand If you are having trouble using Rhino 8 for texture mapping, please let me know the specific issue so I can make sure any bugs are filed and getting fixed. Thanks.
Hi @BrianJ
I’m still seeing the UV mapping displaying really weird - similar to what Steve was seeing here. I see now that you actually had a work-around - I missed that!
-Jakob
That bug is fixed in 8.5 which will be the service release candidate (SRC) soon. I’ve asked the developer if we can push the fix to the upcoming 8.4 SR as well.
@BrianJ happy to hear that some UV display will be solved , will be concern the mapping problem between a texture in WCS or OCS and the raytrace render? Thanks
Do you have a link to where that specific WCS/OCS issue was reported? I’ll check on it. If it wasn’t reported yet, please make a new forum thread and mention me on it. Thanks.
Thanks Jakob! That’s a quick solution that we badly need. We have many models similar to this one, likely created in 3DMAX and imported into Rhino. Unfortunately, we occasionally need them for close-ups.
So I guess when dealing with low-quality surfaces in terms of mapping, the most efficient approach is to simply remodel.
here’s a different approach, not modifying any geometry, nor selecting edges, nor remeshing – just opening the file and applying spherical & cylindrical projections to the different pieces:
if the piece is the main focus of the image, probably best to use the other suggested approaches, but if it is just one of a hundred pieces of furniture in a setting, a two minute solution like this may get the job done
Thanks jdhill. That looks surprisingly good！ We tried box projection previously without selecting individual pieces and failed. We will give this a try
If you need it for a close up, I’d re-model the whole thing. If it’s just for background, here’s how I’d do it:
