Rhino BETA has a completely revamped Patch command. [Patch-FillSrf | New in Rhino BETA] What is Patch? Patch takes a set of surface edges, curves and points as input constraints to create a multi-sided patch with positional (G0), tangential (G1) or curvature (G2) continuity to selected…

Here is an example, when filling in that surface as untrimmed, the U and V selectors as well as the refine option do nothing. The resulting surface looks fine, but I would like to have control over the points, since I might e.g. use that surface to recreate the surrounding ones. [image] main surf…

Yes, thank you. I have good news: the next BETA version - which should be available later today or tomorrow - has the action of U- and V-spans restored, although implemented slightly different. Please be a bit patient for the next version, which will be accompanied with a new post that describes the…

For more details on recent change to 4-sided untrimmed patches, please visit this separate topic. [image] Rhino BETA Feature : Untrimmed surfaces with Patch Serengeti (Rhino BETA) In the latest builds of Rhino BETA improvements were added to the way that 4-sid…

@menno I’m sharing this file I’m working on. The Patch command freezes, so it’s probably a bug. Plateau-Patch si blocca.3dm (236.3 KB) After trying it on that specific area, when I use Patch on other curves it works. However, Rhino becomes very slow, and the Patch command doesn’t start immed…

Thanks, we have this issue logged as https://mcneel.myjetbrains.com/youtrack/issue/RH-97345

I have an example geometry that worked fine in ~ April. The nice result is also in the file. Now I can’t get it to work anymore. The tangency at the cylindrical bulges in the opposite direction. And regardless how select the constraints, there is no usable result. 2026-09-01_PatchProblem.3dm (7…

Thank you. Yes, this orientation is no longer supported at the moment. The best alternative right now is to duplicate the edge as a wire curve and to use it as an I (Internal) constraint. This will not give tangency at the cylinder’s edge. Another option is to choose the upper edge of the cylinder, …

[image] Menno Deij - van Rijswijk: this orientation is no longer supported at the moment At the moment, ok, then I hope it’s get fixed “soon”.

We may end up not supporting it. The tangent continuity works if the other cylinder edge is used. What definitely needs fixing is the trimming.

Rhino BETA Feature: Patch re-implemented

Serengeti (Rhino BETA)

brian (Brian Gillespie) August 11, 2026, 10:30pm 639

RH-97345 is fixed in Rhino BETA

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Rhino BETA Feature: Patch re-implemented

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