I have been searching in the forum for days, but couldn’t really find answer to my question about CDiv (Curve Derivatives) component in Grasshopper. I understand that the 1st derivative is tangent and the 2nd is curvature. It seems like the first in the component represents correct information-parallel to tangent vector at a given point, but I don’t understand why the 2nd differs from the direction of actual curvature vector. Could someone please shed some light on it?
Thank you in advance,