#if !defined(SPLINE_HPP)
#	define SPLINE_HPP

#	if !defined(AFFNMTRX_HPP)
#		include <affnmtrx.hpp>
#	endif

	class CubicCurve {
	public:
		#if defined(USE_SIGNATURE)
			friend int
				Is_Signature_Bad(const volatile CubicCurve *);
		#endif

		CubicCurve(					// Hermite form
			const Point3D& p1,
			const Vector3D& r1,
			const Point3D& p4,
			const Vector3D& r4
		);
		CubicCurve(					// Bezier form
			const Point3D& p1,
			const Point3D& p2,
			const Point3D& p3,
			const Point3D& p4
		);

		void
			Evaluate(
				Scalar t,
				Point3D *p,
				Vector3D *v
			);

		Logical
      	TestInstance() const;

	protected:
		AffineMatrix
			basisMatrix;
	};

#endif