itkMinMaxCurvatureFlowFunction.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkMinMaxCurvatureFlowFunction.h,v $
  Language:  C++
  Date:      $Date: 2009-01-24 20:03:00 $
  Version:   $Revision: 1.16 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/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 notices for more information.

=========================================================================*/
#ifndef __itkMinMaxCurvatureFlowFunction_h
#define __itkMinMaxCurvatureFlowFunction_h

#include "itkCurvatureFlowFunction.h"
#include "itkMacro.h"
#include "itkNeighborhoodOperator.h"

namespace itk {

template <class TImage>
class ITK_EXPORT MinMaxCurvatureFlowFunction :
    public CurvatureFlowFunction<TImage>
{
public:
  typedef MinMaxCurvatureFlowFunction   Self;
  typedef CurvatureFlowFunction<TImage> Superclass;
  typedef SmartPointer<Self>            Pointer;
  typedef SmartPointer<const Self>      ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro( MinMaxCurvatureFlowFunction,
                CurvatureFlowFunction );

  typedef typename Superclass::ImageType        ImageType;
  typedef typename Superclass::PixelType        PixelType;
  typedef typename Superclass::RadiusType       RadiusType;
  typedef typename Superclass::NeighborhoodType NeighborhoodType;
  typedef typename Superclass::FloatOffsetType  FloatOffsetType;

  itkStaticConstMacro(ImageDimension, unsigned int,
                      Superclass::ImageDimension);

  typedef typename RadiusType::SizeValueType RadiusValueType;

  void SetStencilRadius( const RadiusValueType radius );
  const RadiusValueType &GetRadiusValueType() const
    { return m_StencilRadius; }

  virtual PixelType ComputeUpdate(const NeighborhoodType &neighborhood,
                                  void * globalData,
                                  const FloatOffsetType& offset = FloatOffsetType(0.0)
    );

protected:
  MinMaxCurvatureFlowFunction();
  ~MinMaxCurvatureFlowFunction() {}

  typedef Neighborhood<PixelType,itkGetStaticConstMacro(ImageDimension)> StencilOperatorType;
  StencilOperatorType  m_StencilOperator;

  void InitializeStencilOperator();


private:
  MinMaxCurvatureFlowFunction(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

  RadiusValueType  m_StencilRadius;

  // To control overloaded versions of ComputeThreshold
  struct DispatchBase {};
  template<signed int VDimension>
  struct Dispatch : DispatchBase {};
  
  virtual PixelType ComputeThreshold( const Dispatch<2> &,
                                      const NeighborhoodType & neighborhood ) const;
  virtual PixelType ComputeThreshold( const Dispatch<3> &,
                                      const NeighborhoodType & neighborhood ) const;
  virtual PixelType ComputeThreshold( const DispatchBase &,
                                      const NeighborhoodType & neighborhood ) const;
};

}// end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkMinMaxCurvatureFlowFunction.txx"
#endif

#endif