/usr/include/libwildmagic/Wm5IntpTrilinear3.h is in libwildmagic-dev 5.13-1ubuntu3.
This file is owned by root:root, with mode 0o644.
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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 WM5INTPTRILINEAR3_H
#define WM5INTPTRILINEAR3_H
#include "Wm5MathematicsLIB.h"
namespace Wm5
{
template <typename Real>
class WM5_MATHEMATICS_ITEM IntpTrilinear3
{
public:
// Construction and destruction. IntpTrilinear3 does not accept
// responsibility for deleting the input array. The application must do
// so. The interpolator is for uniformly spaced (x,y,z)-values. The
// function values are assumed to be organized as f(x,y,z) = F[z][y][x].
IntpTrilinear3 (int xBound, int yBound, int zBound, Real xMin,
Real xSpacing, Real yMin, Real ySpacing, Real zMin, Real zSpacing,
Real*** F);
int GetXBound () const;
int GetYBound () const;
int GetZBound () 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;
Real GetZMin () const;
Real GetZMax () const;
Real GetZSpacing () const;
// Evaluate the function and its derivatives. The application is
// responsible for ensuring that xmin <= x <= xmax, ymin <= y <= ymax,
// and zmin <= z <= zmax. If (x,y,z) 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,
// the uiYOrder argument is the order of the y-derivative, and the
// uiZOrder argument is the order of the z-derivative. All orders are
// zero to get the function value itself.
Real operator() (Real x, Real y, Real z) const;
Real operator() (int xOrder, int yOrder, int zOrder, Real x,
Real y, Real z) const;
private:
int mXBound, mYBound, mZBound, mQuantity;
Real mXMin, mXMax, mXSpacing, mInvXSpacing;
Real mYMin, mYMax, mYSpacing, mInvYSpacing;
Real mZMin, mZMax, mZSpacing, mInvZSpacing;
Real*** mF;
static const Real msBlend[2][2];
};
typedef IntpTrilinear3<float> IntpTrilinear3f;
typedef IntpTrilinear3<double> IntpTrilinear3d;
}
#endif
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