// =========================================================================
// @author Leonardo Florez Valencia
// @email florez-l@javeriana.edu.co
// =========================================================================

#ifndef __fpa__Image__Filter__h__
#define __fpa__Image__Filter__h__

#include <vector>
#include <itkImageToImageFilter.h>

namespace fpa
{
  namespace Image
  {
    /**
     */
    template< class _TInputImage, class _TOutputImage >
    class Filter
      : public itk::ImageToImageFilter< _TInputImage, _TOutputImage >
    {
    public:
      typedef Filter 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  TVertex;
      typedef typename TInputImage::PixelType  TInputValue;
      typedef typename TOutputImage::PixelType TOutputValue;

      typedef std::vector< TVertex > TVertices;

    protected:
      Filter( );
      virtual ~Filter( );

      virtual void GenerateInputRequestedRegion( ) override;
      virtual void EnlargeOutputRequestedRegion( itk::DataObject* output ) override;

      virtual TInputValue _GetInputValue( const TVertex& vertex ) const;
      virtual void _SetOutputValue( const TVertex& vertex, const TOutputValue& value );
      virtual void _ConfigureOutputs( const TOutputValue& init_value );
      virtual TVertices _GetNeighbors( const TVertex& vertex ) const;
    };

  } // ecapseman

} // ecapseman

#ifndef ITK_MANUAL_INSTANTIATION
#  include <fpa/Image/Filter.hxx>
#endif // ITK_MANUAL_INSTANTIATION

#endif // __fpa__Image__Filter__h__

// eof - $RCSfile$