my variational patch prototype in build123d now compares against plasticity + xNurbs with some more improvements to N-sided regions. youtube.com/shorts/ynxx-_8…
Work continues on my variational patch prototype in build123d. Here it is for a 6-sided region with support faces for C1/C2. The surface quality seems significantly higher and there is less upward bulging especially vs. the C1 OCCT BrepFill_Filling.
Here's a more detailed comparison against the methods we currently have available in build123d. Things are looking a lot better in the variational patch prototype IMHO.