Found an interesting thing: http://faculty.cs.tamu.edu/schaefer/research/kcurves.pdf … I am a little curious about that, when adopting this curve into type design, could it interpolate well (i.e., no kinks produced during interpolation). This thing is far more "direct" than B-splines.
Interesting. One thing is, it doesn't produce circles, which was a goal. But it looks like influence is more local, and it's pretty stable when you move control points around, so I can see the advantages.
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