Beta (Inputs.Base)BetakindAlways bspline.
BetadegreeThe degree, from 1 to 25.
BetapointsA range of x, y, z triples in f64: the control points, at least the degree plus one.
Optional BetaweightsA range in f64 with one weight above zero per control point; left out for a curve that
is not rational.
BetaknotsA range in f64 holding the distinct knots, rising.
BetamultiplicitiesHow many times each knot repeats, one whole number above zero per knot.
A B-spline curve, rational when it has weights, with its knots and their multiplicities as STEP and IFC write them: knots rising, and the multiplicities adding up to the number of control points plus the degree plus one.