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Remapping UV Curves on a Revolve Flat Surface?
ry_gb
Member, csevp, pcbaevp Posts: 246 PRO
Is there a way to remap a revolved flat surface to make the coordinates polar rather orthogonal? I was trying to use Attractor Pattern on a revolved surface (not a full 360 revolve. I'm aware of the limitation) and realized that the underlying grid was perpendicular UV lines and giving me undesired results. The profile for the image on the right is a line that's tilted by 1 degree for demo purposes.
Ramon Yip | glassboard.com
Best Answers
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S1mon
Member Posts: 4,265 PRO
If you revolve something at a microscopic angle from normal to the axis, it will create the surface with the desired UV structure. The minute you do something that could be flat, Parasolid will try to be helpful and make it a simple grid.
Simon Gatrall | Product Development, Engineering, Design, Onshape | Ex- IDEO, PCH, Unagi, Carbon | LinkedIn
2
Answers
You'd need to replace the plane with a planar NURBS surface, I can't think of a way except for that…
If you revolve something at a microscopic angle from normal to the axis, it will create the surface with the desired UV structure. The minute you do something that could be flat, Parasolid will try to be helpful and make it a simple grid.
Simon Gatrall | Product Development, Engineering, Design, Onshape | Ex- IDEO, PCH, Unagi, Carbon | LinkedIn
So it's just the Parasolid kernel doing its thing? Rhino was pretty explicit about the surface, but @ilya_baran you mentioning NURBS makes sense.
I just tried importing a Rhino file into my part studio and while the surface did import with a seam, the grid is still orthogonal. Overall, this isn't a big deal to me, but just a quirk I found in the software. I'm sure there are workarounds for this that don't involve UV.
Ramon Yip | glassboard.com
There have been a number of times I've wished for the ability to have some kind of curvature flow on flat surfaces and thought about resorting to tweaking one minor corner of the surface and projecting back to the plane. Tween Curves is a partial solution but I'm not entirely happy with that either for some use cases.
Derek Van Allen | Engineering Consultant | MeddlerI may be overthinking this… but try this ;)
https://cad.onshape.com/documents/b4a6390ff08540b94b378e64/w/ae411fd2ec988dc3efd3f8a2/e/16153c47ea2e417695cdef36
@GregBrown 🤣 madness
But this does do what I asked for. It's really mainly for things like attractor pattern where the UV layout matters. I also saw you made it in 6 minutes. Was this done using an LLM? If so, that's really impressive. Also impressive if you figured all that out in 6 minutes as well.
Also, lol @ over 9000
Ramon Yip | glassboard.com
Ha! Yes, I appeared to do this quickly as it was copied over from a different doc that I had been working on. And yes it was part of some MCP testing… I also happen to have a couple thousand lines of NURBs helper functions from those MCP tests and could pull some hints from that, which bootstrapped things nicely.
I would love to get some MCP support for featurescript going cause I'm finding that any time there's a hot new model of the month they have this tendency to ignore all of my .md files laced with all of my helpful instructions and I'm forced to spend a little bit of quality time reeducating the newest Claude about featurescript.
Derek Van Allen | Engineering Consultant | MeddlerJust is case it’s not clear from all the different posts I’ve made, I would love to try out the MCP support.
Simon Gatrall | Product Development, Engineering, Design, Onshape | Ex- IDEO, PCH, Unagi, Carbon | LinkedIn