#ifndef __FPA__IO__MATRIXVALUESCONTAINERWRITER__HXX__
#define __FPA__IO__MATRIXVALUESCONTAINERWRITER__HXX__

#include <fstream>
#include <itkMacro.h>

// -------------------------------------------------------------------------
template< class T >
void fpa::IO::MatrixValuesContainerWriter< T >::
SetInput( const T* input )
{
  this->itk::ProcessObject::SetNthInput( 0, const_cast< T* >( input ) );
}

// -------------------------------------------------------------------------
template< class T >
T* fpa::IO::MatrixValuesContainerWriter< T >::
GetInput( )
{
  return( dynamic_cast< T* >( this->itk::ProcessObject::GetInput( 0 ) ) );
}

// -------------------------------------------------------------------------
template< class T >
const T* fpa::IO::MatrixValuesContainerWriter< T >::
GetInput( ) const
{
  return(
    dynamic_cast< const T* >( this->itk::ProcessObject::GetInput( 0 ) )
    );
}

// -------------------------------------------------------------------------
template< class T >
void fpa::IO::MatrixValuesContainerWriter< T >::
Update( )
{
  T* input = this->GetInput( );
  if( input != NULL )
  {
    input->UpdateOutputInformation( );
    input->UpdateOutputData( );
    this->GenerateData( );
    this->ReleaseInputs( );

  } // fi
}

// -------------------------------------------------------------------------
template< class T >
fpa::IO::MatrixValuesContainerWriter< T >::
MatrixValuesContainerWriter( )
  : Superclass( ),
    m_FileName( "" )
{
  this->SetNumberOfRequiredInputs( 1 );
}

// -------------------------------------------------------------------------
template< class T >
fpa::IO::MatrixValuesContainerWriter< T >::
~MatrixValuesContainerWriter( )
{
}

// -------------------------------------------------------------------------
template< class T >
void fpa::IO::MatrixValuesContainerWriter< T >::
GenerateData( )
{
  const T* input = this->GetInput( );

  std::ofstream out( this->m_FileName.c_str( ) );
  if( !out )
  {
    itkExceptionMacro(
      << "Error opening file to write a minimum spanning tree: \""
      << this->m_FileName
      << "\""
      );
    return;

  } // fi

  out << T::TIndex::Dimension << std::endl;

  const typename T::TDecorated& real_input = input->Get( );
  out << real_input.size( ) << std::endl;
  typename T::TDecorated::const_iterator cIt = real_input.begin( );
  for( ; cIt != real_input.end( ); ++cIt )
  {
    out << cIt->second.size( ) << " ";
    for( unsigned int d = 0; d < T::TIndex::Dimension; ++d )
      out << ( cIt->first )[ d ] << " ";

    typename T::TDecorated::value_type::second_type::const_iterator rIt =
      cIt->second.begin( );
    for( ; rIt != cIt->second.end( ); ++rIt )
    {
      for( unsigned int d = 0; d < T::TIndex::Dimension; ++d )
        out << ( rIt->first )[ d ] << " ";
      out << rIt->second << std::endl;

    } // rof

  } // rof
  out.close( );
}

#endif // __FPA__IO__MATRIXVALUESCONTAINERWRITER__HXX__

// eof - $RCSfile$