A curve factory for cubic Catmull–Rom spline generators.
The curve generators produce a cubic Catmull–Rom spline using the specified control points and the parameter alpha,
which defaults to 0.5, as proposed by Yuksel et al. in On the Parameterization of Catmull–Rom Curves,
with one-sided differences used for the first and last piece.
A curve factory for cubic Catmull–Rom spline generators.
The curve generators produce a cubic Catmull–Rom spline using the specified control points and the parameter alpha, which defaults to 0.5, as proposed by Yuksel et al. in On the Parameterization of Catmull–Rom Curves, with one-sided differences used for the first and last piece.