I'm trying to approximate a quarter-circle with a cubic spline, but I'm not
getting the results I expected.
Here is my scene file: https://pastebin.com/SyUgKkHx
Based on this paper, the correct value for k should be about 0.552:
https://www.mechanicalexpressions.com/explore/geometric-modeling/circle-spline-approximation.pdf
However, in my example, that value is too low, and k seems to be about 2.313
instead.
What's going on here?
