Default constructor. Initializes with an empty points list.

Public Sub New()
Public Sub New(
    knots As KnotCollection, 
    fitPoints As Point2dCollection, 
    firstDerivatives As Vector2dCollection, 
    periodic As [MarshalAs(UnmanagedType.U1)] bool
)

public CubicSplineCurve2d();
public CubicSplineCurve2d(
    KnotCollection knots, 
    Point2dCollection fitPoints, 
    Vector2dCollection firstDerivatives, 
    [MarshalAs(UnmanagedType.U1)] bool periodic
);