// Wild Magic Source Code
// David Eberly
// http://www.geometrictools.com
// Copyright (c) 1998-2008
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation; either version 2.1 of the License, or (at
// your option) any later version.  The license is available for reading at
// either of the locations:
//     http://www.gnu.org/copyleft/lgpl.html
//     http://www.geometrictools.com/License/WildMagicLicense.pdf
//
// Version: 4.0.0 (2006/06/28)

#ifndef WM4INTPBSPLINEUNIFORMN_H
#define WM4INTPBSPLINEUNIFORMN_H

#include "Wm4FoundationLIB.h"
#include "Wm4IntpBSplineUniform.h"

namespace Wm4
{

template <class Real>
class WM4_FOUNDATION_ITEM IntpBSplineUniformN
    : public IntpBSplineUniform<Real>
{
public:
    // Construction and destruction.  IntpBSplineUniformN accepts
    // responsibility for deleting the input array afData.  The input array
    // aiDim is copied.
    IntpBSplineUniformN (int iDims, int iDegree, const int* aiDim,
        Real* afData);
    virtual ~IntpBSplineUniformN ();

    int Index (int* aiI) const;

    // spline evaluation for function interpolation (no derivatives)
    virtual Real operator() (Real* afX);

    // spline evaluation, derivative counts given in aiDx[]
    virtual Real operator() (int* aiDx, Real* afX);

private:
    using IntpBSplineUniform<Real>::m_iDims;
    using IntpBSplineUniform<Real>::m_iDegree;
    using IntpBSplineUniform<Real>::m_iDp1;
    using IntpBSplineUniform<Real>::m_iDp1ToN;
    using IntpBSplineUniform<Real>::m_aiDim;
    using IntpBSplineUniform<Real>::m_afData;
    using IntpBSplineUniform<Real>::m_aiGridMin;
    using IntpBSplineUniform<Real>::m_aiGridMax;
    using IntpBSplineUniform<Real>::m_aiBase;
    using IntpBSplineUniform<Real>::m_aiOldBase;
    using IntpBSplineUniform<Real>::m_aafMatrix;
    using IntpBSplineUniform<Real>::m_afCache;
    using IntpBSplineUniform<Real>::m_afInter;
    using IntpBSplineUniform<Real>::m_aafPoly;
    using IntpBSplineUniform<Real>::m_afProduct;
    using IntpBSplineUniform<Real>::m_aiSkip;
    using IntpBSplineUniform<Real>::m_oEvaluateCallback;

    int* m_aiEvI;
    int* m_aiCiLoop;
    int* m_aiCiDelta;
    int* m_aiOpI;
    int* m_aiOpJ;
    int* m_aiOpDelta;

    void EvaluateUnknownData ();
    void ComputeIntermediate ();
};

typedef IntpBSplineUniformN<float> IntpBSplineUniformNf;
typedef IntpBSplineUniformN<double> IntpBSplineUniformNd;

}

#endif
