Just an observation about converting from Sub-D to NURBS: I noticed that the resulting surfaces or polysurfaces do not show isocureves. ("Show Isocurves: is checked on under display settings.) This has not produced any issues for me, just a curiosity. However converting a Sub-D object to a Brep co…

The output of ToNurbs from a SubD does not have its “show surface isocurve” property turned on, probably because the SubD has no such property. When we try to copy properties from the SubD to the Brep, this one defaults to OFF. I don’t know the details for Grasshopper, but it looks like it bakes Br…

[image] benjamin.moulton: Side note: In many of my workflows I select “unpacked” when converting to NURBS and selectively use the MergSrf command with Smooth set to ‘No’. One advantage of the face packing option over that method is that we are able to remove up to two rows of CVs at every smo…

I assumed you had it (ToNURBS) set to disable the isocurves per object due to the density and to make it more clear where the edges were. I actually like it this way but knew about the per object setting. I can see how it might be confusing if you didn’t though. I’m fine with it either way.

This is tracked here: https://mcneel.myjetbrains.com/youtrack/issue/RH-60811 The “show surface isocurve” value will honor the app setting for that when creating a Brep from a SubD. [image]

Thank you for the reply. Had never noticed this feature under object properties.

Thanks, makes perfect sense to me know. I was thinking is was a display setting issue and hadn’t noticed isocurve density in the object properties.

Sub-d To NURBS observation: No Iso-Curves

Rhino SubD

brian (Brian Gillespie) October 7, 2020, 9:01pm 9

RH-60811 is fixed in the latest BETA

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Sub-d To NURBS observation: No Iso-Curves

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