/usr/include/libwildmagic/Wm5IntpBicubic2.h is in libwildmagic-dev 5.13-1+b2.
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// Copyright (c) 1998-2014
// Distributed under the Boost Software License, Version 1.0.
// http://www.boost.org/LICENSE_1_0.txt
// http://www.geometrictools.com/License/Boost/LICENSE_1_0.txt
//
// File Version: 5.0.1 (2010/10/01)
#ifndef WM5INTPBICUBIC2_H
#define WM5INTPBICUBIC2_H
#include "Wm5MathematicsLIB.h"
namespace Wm5
{
template <typename Real>
class WM5_MATHEMATICS_ITEM IntpBicubic2
{
public:
// Construction and destruction. IntpBicubic2 does not accept
// responsibility for deleting the input array. The application must do
// so. The interpolator is for uniformly spaced (x,y)-values. The
// function values are assumed to be organized as f(x,y) = F[y][x].
// Exact interpolation is achieved by setting catmullRom to 'true',
// giving you the Catmull-Rom blending matrix. If a smooth interpolation
// is desired, set catmullRom to 'false' to obtain B-spline blending.
IntpBicubic2 (int xBound, int yBound, Real xMin, Real xSpacing,
Real yMin, Real ySpacing, Real** F, bool catmullRom);
int GetXBound () const;
int GetYBound () const;
int GetQuantity () const;
Real** GetF () const;
Real GetXMin () const;
Real GetXMax () const;
Real GetXSpacing () const;
Real GetYMin () const;
Real GetYMax () const;
Real GetYSpacing () const;
// Evaluate the function and its derivatives. The application is
// responsible for ensuring that xmin <= x <= xmax and ymin <= y <= ymax.
// If (x,y) is outside the extremes, the function returns MAXREAL. The
// first operator is for function evaluation. The second operator is for
// function or derivative evaluations. The uiXOrder argument is the order
// of the x-derivative and the uiYOrder argument is the order of the
// y-derivative. Both orders are zero to get the function value itself.
Real operator() (Real x, Real y) const;
Real operator() (int xOrder, int yOrder, Real x, Real y) const;
private:
int mXBound, mYBound, mQuantity;
Real mXMin, mXMax, mXSpacing, mInvXSpacing;
Real mYMin, mYMax, mYSpacing, mInvYSpacing;
Real** mF;
const Real (*mBlend)[4];
static const Real msCRBlend[4][4];
static const Real msBSBlend[4][4];
};
typedef IntpBicubic2<float> IntpBicubic2f;
typedef IntpBicubic2<double> IntpBicubic2d;
}
#endif
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