How about chordal & centripental catmull-rom support?

[keyten]

Some links to learn: https://stackoverflow.com/questions/9489736/catmull-rom-curve-with-no-cusps-and-no-self-intersections/23980479#23980479 http://edu.alnam.ru/book_cpsp.php?id=60 https://en.wikipedia.org/wiki/Centripetal_Catmull–Rom_spline http://nbviewer.jupyter.org/github/empet/geom_modeling/blob/master/Catmull-Rom-splines.ipynb http://nbviewer.jupyter.org/github/empet/geom_modeling/blob/master/FP-Bezier-Bspline.ipynb http://www.cs.cmu.edu/~462/projects/assn2/assn2/catmullRom.pdf