What I’m looking for is a position match along the sky blue edge I marked, and some sort of tangent/curvature continuity with all the other edges.
This is just a quarter of the final shape I’m trying to model, so the eventual result would have to be mirrored twice.
My understanding is that in scenarios like this one, what I should aim to do is to break down the 5-sided hole into two 4-sided “patches” by using some internal curves and then try to match everything. But I might as well have gotten it all wrong.
That said, I unsuccessfully tried to do that, and I also tried to make the patch in one go with xNurbs, but the result straight out of the tool was not what I’m searching.
I’m also attaching the file, any help or advice is greatly appreciated. Thanks!
One issue is that the arc used to trim the quarter circle has a kink (an edit point with multiplicity). I replaced it with a proper curve (degree 3, 2 spans). Here’s the standard patch layout of doing these kind of things (I only did it with G0/G1 continuity).
That may work here, but in many products, that upper surface is rarely linear, and the whole shebang is curved apart from one boundary that never matters ; )
