Interesting problem with UVs and custom mapping. I do a lot of Squishing of textured surfaces and meshes. 99% of the time I UV map and paint/texture in 3DCoat and then come back to Rhino for flattening. This always works perfectly. However I decided I wanted to use Rhinos UV Editor in this case. S…

Oh! Even more interesting! I thought I would open the UV editor on the gaga, moved squished piece. It shows exactly the correct UV layout it’s supposed to have Now I’m really confused. Steve

Hi @Steve_Howden UVEditor applies custom mesh mapping - it is a separate mesh stored along the texture mapping. Squish appears to copy the custom mapping mesh but does not update it to match the squished form of the object. When you re-run UVEditor the object you see is that custom mapping mesh. O…

This appears to be the same issue as reported here: RH-59943 Squish: Moving the squished mesh object will cause its texture to disappear,

[image] Jussi_Aaltonen: One solution would be to convert the custom mesh mapping on those meshes into surface parameter mapping before running squish. But I will have to figure out if there is a way to do that some how. Yep, surface mapping works correctly, but l have no idea how to convert t…

Hi @Steve_Howden , have you tried the _Bake command ? (Note that it does apply the texture it bakes to a new material and assigns it). _ c.

Hi Clement. Yes I thought of that, but bake only works on surfaces, not meshes. I might try baking the original polysrf, then mesh that and see what happens…

Nope. That doesn’t work either :frowning:

G’day @Steve_Howden and @Jussi_Aaltonen The script below seems to work for baking the squished meshes results. Possibly it can be used to bake the input mesh as well but I did not test that ( it’s quick and dirty and late at night in this side of the globe) bake_squish_mapping.py (832 Bytes) Le…

OK. Not a solution to the Rhino problem, however if I take the whole thing into 3DCoat and apply UV mapping there and then re-import it behaves and the mapping has been applied to the mesh correctly. The missing link in Rhino with custom mapping has always been the disconnect between surface/mesh p…

Hi Willem, Genius! You’ve done it again. It works for the input mesh too. Many thanks to you on the other side of the world. Regards, Steve

Custom mapped object. UVs lost when moving squished piece

Rendering

will (Will Pearson) July 15, 2025, 9:59pm 15

RH-59943 is fixed in Rhino WIP

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Custom mapped object. UVs lost when moving squished piece

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