// -------------------------------------------------------------------------
// @author Leonardo Florez-Valencia (florez-l@javeriana.edu.co)
// -------------------------------------------------------------------------

#ifndef __cpExtensions__Algorithms__ImageFunctorFilter__hxx__
#define __cpExtensions__Algorithms__ImageFunctorFilter__hxx__

#include <itkImageScanlineConstIterator.h>
#include <itkImageScanlineIterator.h>
#include <itkProgressReporter.h>

// -------------------------------------------------------------------------
template< class _TInputImage, class _TOutputImage >
cpExtensions::Algorithms::ImageFunctorFilter< _TInputImage, _TOutputImage >::
ImageFunctorFilter( )
  : Superclass( )
{
}

// -------------------------------------------------------------------------
template< class _TInputImage, class _TOutputImage >
cpExtensions::Algorithms::ImageFunctorFilter< _TInputImage, _TOutputImage >::
~ImageFunctorFilter( )
{
}

// -------------------------------------------------------------------------
template< class _TInputImage, class _TOutputImage >
void
cpExtensions::Algorithms::ImageFunctorFilter< _TInputImage, _TOutputImage >::
ThreadedGenerateData( const TRegion& region, itk::ThreadIdType threadId )
{
  // Configure data for this thread
  const typename TRegion::SizeType& regionSize = region.GetSize( );
  if( regionSize[ 0 ] == 0 )
    return;
  const TInputImage* in = this->GetInput( );
  TOutputImage* out = this->GetOutput( 0 );
  const size_t nLines = region.GetNumberOfPixels( ) / regionSize[ 0 ];
  itk::ProgressReporter progress( this, threadId, nLines );

  // Iterate over this region
  itk::ImageScanlineConstIterator< TInputImage > iIt( in, region );
  itk::ImageScanlineIterator< TOutputImage > oIt( out, region );
  iIt.GoToBegin( );
  oIt.GoToBegin( );
  while( !iIt.IsAtEnd( ) )
  {
    while( !iIt.IsAtEndOfLine( ) )
    {
      oIt.Set( this->m_Functor->Evaluate( iIt.Get( ) ) );
      ++iIt;
      ++oIt;

    } // elihw
    iIt.NextLine( );
    oIt.NextLine( );
    progress.CompletedPixel( );

  } // elihw
}

#endif // __cpExtensions__Algorithms__ImageFunctorFilter__hxx__

// eof - $RCSfile$