/usr/include/vtk-7.1/vtkWendlandQuinticKernel.h is in libvtk7-dev 7.1.1+dfsg1-2.
This file is owned by root:root, with mode 0o644.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 | /*=========================================================================
Program: Visualization Toolkit
Module: vtkWendlandQuinticKernel.h
Copyright (c) Ken Martin, Will Schroeder, Bill Lorensen
All rights reserved.
See Copyright.txt or http://www.kitware.com/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notice for more information.
=========================================================================*/
/**
* @class vtkWendlandQuinticKernel
* @brief a quintic SPH interpolation kernel
*
*
* vtkWendlandQuinticKernel is an smooth particle hydrodynamics interpolation kernel as
* described by D.J. Price. This is a quintic formulation.
*
* @warning
* FOr more information see D.J. Price, Smoothed particle hydrodynamics and
* magnetohydrodynamics, J. Comput. Phys. 231:759-794, 2012. Especially
* equation 49.
*
* @par Acknowledgments:
* The following work has been generously supported by Altair Engineering
* and FluiDyna GmbH. Please contact Steve Cosgrove or Milos Stanic for
* more information.
*
* @sa
* vtkSPHKernel vtkSPHInterpolator
*/
#ifndef vtkWendlandQuinticKernel_h
#define vtkWendlandQuinticKernel_h
#include "vtkFiltersPointsModule.h" // For export macro
#include "vtkSPHKernel.h"
#include <algorithm> // For std::min()
class vtkIdList;
class vtkDoubleArray;
class VTKFILTERSPOINTS_EXPORT vtkWendlandQuinticKernel : public vtkSPHKernel
{
public:
//@{
/**
* Standard methods for instantiation, obtaining type information, and printing.
*/
static vtkWendlandQuinticKernel *New();
vtkTypeMacro(vtkWendlandQuinticKernel,vtkSPHKernel);
void PrintSelf(ostream& os, vtkIndent indent);
//@}
/**
* Produce the computational parameters for the kernel. Invoke this method
* after setting initial values like SpatialStep.
*/
virtual void Initialize(vtkAbstractPointLocator *loc, vtkDataSet *ds,
vtkPointData *pd);
//@{
/**
* Compute weighting factor given a normalized distance from a sample point.
* Note that the formulation is slightly different to avoid an extra operation
* (which has the effect of affecting the NormFactor by 1/16).
*/
virtual double ComputeFunctionWeight(const double d)
{
if ( d >= 2.0 )
{
return 0.0;
}
else
{
double tmp = 1.0 - 0.5*d;
return (tmp*tmp*tmp*tmp) * (1.0 + 2.0*d);
}
}
//@}
//@{
/**
* Compute weighting factor for derivative quantities given a normalized
* distance from a sample point.
*/
virtual double ComputeDerivWeight(const double d)
{
if ( d >= 2.0 )
{
return 0.0;
}
else
{
double tmp = 1.0 - 0.5*d;
return -2.0*(tmp*tmp*tmp) * (1.0 + 2.0*d) +
2.0*(tmp*tmp*tmp*tmp);
}
}
//@}
protected:
vtkWendlandQuinticKernel();
~vtkWendlandQuinticKernel();
private:
vtkWendlandQuinticKernel(const vtkWendlandQuinticKernel&) VTK_DELETE_FUNCTION;
void operator=(const vtkWendlandQuinticKernel&) VTK_DELETE_FUNCTION;
};
#endif
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