Curve Direction

PHOTO EMBED

Thu Jun 30 2022 07:59:11 GMT+0000 (Coordinated Universal Time)

Saved by @TFrog

v@flatnrm = @N;
@flatnrm.y = 0;
@flatnrm = normalize(@flatnrm);

v@right = cross({0,1,0}, @flatnrm);
v@up = cross(@N, @right);
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