vtkGaussianKernel.h

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/*=========================================================================

  Program:   Visualization Toolkit
  Module:    vtkGaussianKernel.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.

=========================================================================*/
#ifndef vtkGaussianKernel_h
#define vtkGaussianKernel_h

#include "vtkFiltersPointsModule.h" // For export macro
#include "vtkGeneralizedKernel.h"

class vtkIdList;
class vtkDoubleArray;


class VTKFILTERSPOINTS_EXPORT vtkGaussianKernel : public vtkGeneralizedKernel
{
public:

  static vtkGaussianKernel *New();
  vtkTypeMacro(vtkGaussianKernel,vtkGeneralizedKernel);
  void PrintSelf(ostream& os, vtkIndent indent) override;

  void Initialize(vtkAbstractPointLocator *loc, vtkDataSet *ds,
                          vtkPointData *pd) override;

  // Re-use any superclass signatures that we don't override.
  using vtkGeneralizedKernel::ComputeWeights;

  vtkIdType ComputeWeights(double x[3], vtkIdList *pIds,
                                   vtkDoubleArray *prob, vtkDoubleArray *weights) override;


  vtkSetClampMacro(Sharpness,double,1,VTK_FLOAT_MAX);
  vtkGetMacro(Sharpness,double);

protected:
  vtkGaussianKernel();
  ~vtkGaussianKernel() override;

  double Sharpness;

  // Internal structure to reduce computation
  double F2;

private:
  vtkGaussianKernel(const vtkGaussianKernel&) = delete;
  void operator=(const vtkGaussianKernel&) = delete;
};

#endif