During some geometry investigation (see this thread Moebius Surface) I noticed some peculiar results as returned by the Rhino.SurfaceCurvature function. My assumption was that a periodic surface would compensate for parameter values beyond the domain’s range (in a similar fashion to how we can locate a spot on a circle at 2.5 pi radians (450 degrees).
It did not. But, the function didn’t baulk either. The results were certainly interesting.
The wayward lines were created by trying to evaluate u parameters 16 – 25.
WaywardLines.3dm (34.8 KB)