CubicSpline.h

//
// (Natural) Cubic Spline class.
//
// Originally adapted from some LGPL code found around the net.
//
// Copyright (c) 2004 Virtual Terrain Project
// Free for all uses, see license.txt for details.
//

#ifndef __CUBIC_SPLINE_H__
#define __CUBIC_SPLINE_H__

#include <list>
#include "MathTypes.h"

class CubicSpline
{
public:
    CubicSpline();
    virtual ~CubicSpline();

    void Cleanup();
    int AddPoint(const DPoint3 &vec);
    bool Generate();
    bool Interpolate(double par, DPoint3 *vec,
                    DPoint3 *dvec = NULL, DPoint3 *ddvec = NULL) const;
    int NumPoints() const { return m_iPoints; }

private:
    std::list<DPoint3> m_veclist;

    int m_iPoints;
    DPoint3 *m_pCoeff0;
    DPoint3 *m_pCoeff1;
    DPoint3 *m_pCoeff2;
    DPoint3 *m_pCoeff3;
};

#endif  // __CUBIC_SPLINE_H__