Hi Pilou,
Making the number of points, less 1, in the script, divisible by 4, results in 4 long lines at angles PI/2, PI, 3PI/2, and 2PI.
Then the "radial" curves seem to be more symmetric.
There are 4 quadrants, so being congruent to 0 modulus 4 seems helpful.
The original script uses 21, 161, and 101, which give quite a lot of curves, and after fixing up the outer perimeter, are network-able.
I think this is because the values near these angles change a great deal with small perturbations.
The equations are not nice and uniform.
- Brian
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