vtkFiniteDifferenceGradientEstimator.h

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

  Program:   Visualization Toolkit
  Module:    vtkFiniteDifferenceGradientEstimator.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 __vtkFiniteDifferenceGradientEstimator_h
#define __vtkFiniteDifferenceGradientEstimator_h

#include "vtkRenderingVolumeModule.h" // For export macro
#include "vtkEncodedGradientEstimator.h"

class VTKRENDERINGVOLUME_EXPORT vtkFiniteDifferenceGradientEstimator : public vtkEncodedGradientEstimator
{
public:
  vtkTypeMacro(vtkFiniteDifferenceGradientEstimator,vtkEncodedGradientEstimator);
  void PrintSelf( ostream& os, vtkIndent indent );

  static vtkFiniteDifferenceGradientEstimator *New();


  vtkSetMacro( SampleSpacingInVoxels, int );
  vtkGetMacro( SampleSpacingInVoxels, int );

  // The sample spacing between samples taken for the normal estimation
  int SampleSpacingInVoxels;

protected:
  vtkFiniteDifferenceGradientEstimator();
  ~vtkFiniteDifferenceGradientEstimator();



  void UpdateNormals( void );
private:
  vtkFiniteDifferenceGradientEstimator(const vtkFiniteDifferenceGradientEstimator&);  // Not implemented.
  void operator=(const vtkFiniteDifferenceGradientEstimator&);  // Not implemented.
};


#endif