I’m working on a sculptural surface and I have a visible discontinuity in the transition area between the upper vertical section and the lower flowing part.
With boundary curves like these, see the angle between the surfaces, you are stuck with what you have (neither G1 nor G2), if you cannot redesign them (the curves are, for such simple shape, also overly complex).
Thank you @Lagom, I can feel the problem but i don’t know how to solve it… I made a similar paper model, and i know it should be possible, but cannot find a geometric construction to solve it…
This is literally geometrically impossible to make a smooth transition, with just trying to make surfaces off of these edges. The corner has a sharp kink!
So one of those edges has to move, and your best bet probably involves trying to make a new single surface where the lower edge there is trimmed off…
Thanks for the hint @JimCarruthers ! Could you please tell me which edge should i move to make it work? My geometry skills here are lacking The transition can be softer, i just need to keep most of the guidelines but not entirely
You will have to sacrifice the shape of one curve (arrow) to be able to make the bottom surface G1 or G2 continuous (what you call “smooth”) to the other. I would first start with simple degree 2 single span curves where possible and up the degree for the curve you need to match into the boundary of the top surface. Right now, the boundary curves are overly complex for the shape they represent, which makes the surfaces equally overly complex. Once simplified, you can then sculpt the bottom surface by moving its internal CPs, apart from the 2nd or 3rd ribbon of CPs where it’s supposed to be G1 or G2 continuous to the top surface.
Thanks @lagom a lot again!!! Would you mind sharing your model so i can undesrtand it better in 3d? I’ll have to also do some learning about the continuities between surfaces…
