Grid unwrap uv #78402
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Reference: blender/blender#78402
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Make rectangular uv layout of selected uv’s. If non rectangular/quad topology is selected, it is adjusted to the rectangular/quad topology.
Starting point
Selected UV island shoud be automatically aligned to a to U and V as much as possible for the topology which is built in a grid like fashion
Desired result
The topology that is built in a grid like fashion (selected/orange) is aligned to the U and V axis.
The topology that is not built in a grid like fashion (selected/green), or is not part of the contineous grid like topology with largest area, will be adjusted to fit nicely to the rectified UV’s.
The dominant grid is the continuous grid with the largest area. Supporting multiple grid areas are not important at the first implementation of the operator
Changed status from 'Needs Triage' to: 'Confirmed'
Added subscriber: @DanielBystedt
Added subscriber: @APEC
Added subscriber: @MeshVoid
Added subscriber: @KenzieMac130
Added subscriber: @no4me
Added subscriber: @GeorgiaPacific
Apologies for the delay on this one. It's turning out to be quite a bit more complicated than anticipated. Turns out it requires two solvers, and it's taken me a little while to figure out the implications of that.
As a side effect, I'll probably have to add a "seed" parameter to ensure this runs in a reasonable amount of time.
In the interim, here's an interesting unwrap for the default cube that I haven't seen before:
Once I have quad-dominant meshes working, I might take a quick peek and see if there's a tweak for triangle-dominant meshes, as they also admit a grid structure as can be seen on the default unwrapping of the Ico Sphere:
Added subscriber: @AndyCuccaro
Added subscriber: @Zeastin
Super rough first pass is here https://developer.blender.org/D17039