Interface for a 2-dimensional curve. 2-dimensional curves occur e.g. in the parametric system of surfaces to build the outline of faces or as projections of 3-dimensional curves on a plane. There is a normalized parametric system for the curve that starts at 0.0 and ends at 1.0

public interface ICurve2D : IQuadTreeInsertable

Public Interface ICurve2D _
	Inherits IQuadTreeInsertable

public interface class ICurve2D : IQuadTreeInsertable