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

#ifndef __fpa__Image__RegionGrow__h__
#define __fpa__Image__RegionGrow__h__

#include <itkImageToImageFilter.h>
#include <itkFunctionBase.h>
#include <fpa/Base/SeedsInterface.h>
#include <fpa/Image/MarksInterface.h>

namespace fpa
{
  namespace Image
  {
    /**
     */
    template< class _TInputImage, class _TOutputImage >
    class RegionGrow
      : public itk::ImageToImageFilter< _TInputImage, _TOutputImage >,
        public fpa::Base::SeedsInterface< typename _TInputImage::IndexType, typename _TInputImage::IndexType::LexicographicCompare >,
        public fpa::Image::MarksInterface< _TInputImage::ImageDimension >
    {
    public:
      typedef _TInputImage  TInputImage;
      typedef _TOutputImage TOutputImage;
      typedef typename TInputImage::IndexType  TIndex;
      typedef typename TInputImage::RegionType TRegion;
      typedef typename TInputImage::PixelType  TInputPixel;
      typedef typename TOutputImage::PixelType TOutputPixel;
      typedef typename TIndex::LexicographicCompare TIndexCompare;

      typedef RegionGrow                                                 Self;
      typedef itk::ImageToImageFilter< TInputImage, TOutputImage > Superclass;
      typedef itk::SmartPointer< Self >                               Pointer;
      typedef itk::SmartPointer< const Self >                    ConstPointer;

      typedef fpa::Base::SeedsInterface< TIndex, TIndexCompare > TSeedsInterface;
      typedef fpa::Image::MarksInterface< _TInputImage::ImageDimension > TMarksInterface;
      typedef itk::FunctionBase< TInputPixel, bool > TIntensityFunctor;

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

      itkGetConstMacro( InsideValue, TOutputPixel );
      itkGetConstMacro( OutsideValue, TOutputPixel );

      itkSetMacro( InsideValue, TOutputPixel );
      itkSetMacro( OutsideValue, TOutputPixel );

    public:
      void SetPredicate( TIntensityFunctor* functor );

    protected:
      RegionGrow( );
      virtual ~RegionGrow( );

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

    private:
      // Purposely not implemented
      RegionGrow( const Self& other );
      Self& operator=( const Self& other );

    protected:
      typename TIntensityFunctor::Pointer m_IntensityFunctor;
      TOutputPixel m_InsideValue;
      TOutputPixel m_OutsideValue;
    };

  } // ecapseman

} // ecapseman

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

#endif // __fpa__Image__RegionGrow__h__

// eof - $RCSfile$