The control points: the curve starts at the first, ends at the last and is pulled toward the ones between.
When true, the first point is appended again so the ends meet, with a corner at the seam.
OptionaldegreeHow many neighboring control points shape each part of the curve; leave it out for a classic Bezier, capped at 25 and bounded automatically above 26 points.
OptionalperiodicWhen true, the curve closes into a loop that is smooth across the seam, using degree or a
default; it overrides closed.
Control points and shape options for
shapes.wire.createBezier, a smooth curve pulled toward its control points.