hello (mainly) Mc Neel-Team, (i thing this is a bug)
hello (maybe) Everybody
Attached find a file with two R1.5mm arcs that lay on two parallel planes.
(deviation to 100% parallel 1.4872e-08 mm)
If I _loft those two curves i get a surface with unexpected Iso-Curve(s) in the middle.
(both straight and normal option)
I get similar unexpected results.
I get same results in Rhino 5 and Rhino 6
I found out, that the unexpected result has something to do with the weight of the CVs.
if i do a loft with option straight and then set the weight to 1 for all CVs the Isocurves are as expected.
But why does the different weight of the CVs of the input Curves (2 Arcs with different Angles) influence the position of the interpolated CVs in between ?
For me this looks like a bug - but maybe it is also my miss-understanding of the Nurbs Model ?
Thanks for a explanation or a bug-tracking.
Best regards - Tom
Loft_sweep_problem_00.3dm (71.1 KB)