#ifndef __fpa__Image__MoriFilterHelper__h__
#define __fpa__Image__MoriFilterHelper__h__

/* TODO
   #include <fpa/Image/RegionGrow.h>
   #include <fpa/Image/Functors/RegionGrow/BinaryThreshold.h>
*/
#include <utility>
#include <vector>
#include <itkImageToImageFilter.h>

namespace fpa
{
  namespace Image
  {
    /**
     */
    template< class _TInputImage, class _TOutputImage >
    class MoriFilterHelper
      : public itk::ImageToImageFilter< _TInputImage, _TOutputImage >
    {
    public:
      typedef MoriFilterHelper                                       Self;
      typedef itk::ImageToImageFilter< _TInputImage, _TOutputImage > Superclass;
      typedef itk::SmartPointer< Self >                              Pointer;
      typedef itk::SmartPointer< const Self >                        ConstPointer;

      typedef _TInputImage  TInputImage;
      typedef _TOutputImage TOutputImage;
      typedef typename TInputImage::IndexType  TIndex;
      typedef typename TInputImage::PixelType  TInputPixel;
      typedef typename TOutputImage::PixelType TOutputPixel;

      typedef std::pair< TInputPixel, unsigned long > TCurveData;
      typedef std::vector< TCurveData >               TCurve;

      /* TODO
         typedef typename Superclass::TOutput       TOutput;
         typedef typename Superclass::TVertex       TVertex;
         typedef typename Superclass::TGrowFunction TGrowFunction;
         typedef typename _TInputImage::PixelType   TPixel;
         typedef fpa::Image::Functors::RegionGrow::BinaryThreshold< _TInputImage, TOutput > TBinThresholdFunction;
         protected:
         typedef typename Superclass::_TQueueNode _TQueueNode;
         typedef typename Superclass::_TQueue     _TQueue;
      */

    public:
      itkNewMacro( Self );
      itkTypeMacro( fpa::Image::MoriFilterHelper, itk::ImageToImageFilter );

      itkGetConstMacro( Seed, TIndex );
      itkGetConstMacro( Lower, TInputPixel );
      itkGetConstMacro( Upper, TInputPixel );
      itkGetConstMacro( Step, TInputPixel );
      itkGetConstMacro( OptimumThreshold, typename _TOutputImage::PixelType );
      itkGetConstMacro( Curve, TCurve );

      itkSetMacro( Seed, TIndex );
      itkSetMacro( Lower, TInputPixel );
      itkSetMacro( Upper, TInputPixel );
      itkSetMacro( Step, TInputPixel );

    protected:
      MoriFilterHelper( )
        : Superclass( )
        {
        }
      virtual ~MoriFilterHelper( )
        {
        }

      /* TODO
         virtual bool _ContinueGenerateData( ) override;
         virtual void _BeforeGenerateData( ) override;
         virtual void _AfterGenerateData( ) override;
         virtual void _BeforeLoop( ) override;
         virtual void _AfterLoop( ) override;
         virtual bool _UpdateValue( _TQueueNode& v, const _TQueueNode& p ) override;
         virtual bool _UpdateResult( _TQueueNode& n ) override;
      */

    private:
      // Purposely not defined
      MoriFilterHelper( const Self& other );
      Self& operator=( const Self& other );

    protected:
      TIndex m_Seed;
      TInputPixel m_Lower;
      TInputPixel m_Upper;
      TInputPixel m_Step;
      typename _TOutputImage::PixelType m_OptimumThreshold;

      unsigned long m_ActualCount;
      TCurve m_Curve;
    };

  } // ecapseman

} // ecapseman

/* TODO
   #ifndef ITK_MANUAL_INSTANTIATION
   #  include <fpa/Image/MoriFilterHelper.hxx>
   #endif // ITK_MANUAL_INSTANTIATION
*/

#endif // __fpa__Image__MoriFilterHelper__h__

// eof - $RCSfile$