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The tangent of the curve at the first control point. If the tangent is not given, it will be estimated.

The tangent of the curve at the last control point. If the tangent is not given, it will be estimated.

The array of Cartesian3 control points.

An array of strictly increasing, unit-less, floating-point times at each point. The values are in no way connected to the clock time. They are the parameterization for the curve.