#include <itkImage.h>
#include <itkImageFileWriter.h>

#include <fpa/Image/RegionGrow.h>
#include <fpa/Image/Functors/RegionGrow/Tautology.h>

// -------------------------------------------------------------------------
typedef unsigned char                  TPixel;
typedef itk::Image< TPixel, 2 >        TImage;
typedef itk::ImageFileWriter< TImage > TWriter;

typedef fpa::Image::RegionGrow< TImage, TImage > TFilter;
typedef fpa::Image::Functors::RegionGrow::Tautology< TPixel > TPredicate;

// -------------------------------------------------------------------------
int main( int argc, char* argv[] )
{
  // Get arguments
  if( argc < 6 )
  {
    std::cerr
      << "Usage: " << argv[ 0 ]
      << " output_image width height s0x s0y s1x s1y ..."
      << std::endl;
    return( 1 );

  } // fi
  std::string output_image_filename = argv[ 1 ];
  TImage::SizeType size;
  size[ 0 ] = std::atoi( argv[ 2 ] );
  size[ 1 ] = std::atoi( argv[ 3 ] );

  TImage::Pointer input = TImage::New( );
  input->SetRegions( size );
  input->Allocate( );
  input->FillBuffer( 0 );

  TPredicate::Pointer predicate = TPredicate::New( );

  TFilter::Pointer filter = TFilter::New( );
  filter->SetInput( input );
  filter->SetPredicate( predicate );
  for( int i = 4; i < argc; i += 2 )
  {
    if( i + 1 < argc )
    {
      TImage::IndexType seed;
      seed[ 0 ] = std::atoi( argv[ i ] );
      seed[ 1 ] = std::atoi( argv[ i + 1 ] );
      filter->AddSeed( seed );

    } // fi

  } // rof
  filter->SetInsideValue( 255 );
  filter->SetOutsideValue( 0 );

  TWriter::Pointer writer = TWriter::New( );
  writer->SetInput( filter->GetOutput( ) );
  writer->SetFileName( output_image_filename );
  try
  {
    writer->Update( );
  }
  catch( std::exception& err )
  {
    std::cerr << "ERROR: " << err.what( ) << std::endl;
    return( 1 );

  } // yrt
  return( 0 );
}

// eof - $RCSfile$