[scotty79]

More on smoothness of the curves https://www.youtube.com/watch?v=jvPPXbo87ds

As seen on HN this month.

[AceJohnny2]

Another upvote for Freya Holmér's amazing video "The Continuity of Splines".

She covers the insightful "reflection test" around the 28:05 mark: https://youtu.be/jvPPXbo87ds?t=1685 and actual "curvature combs" at 32:26.

Finally, she covers the continuity of curvature combs that B-Splines exhibit around the 54:00 mark: https://youtu.be/jvPPXbo87ds?t=3240