#include <cpExtensions/Visualization/PolyLineParametricPathToPolyData.h>

#include <vtkCellArray.h>
#include <vtkInformation.h>
#include <vtkInformationVector.h>
#include <vtkSmartPointer.h>

// -------------------------------------------------------------------------
template< class _TPolyLine >
typename
cpExtensions::Visualization::PolyLineParametricPathToPolyData< _TPolyLine >::
Self*
cpExtensions::Visualization::PolyLineParametricPathToPolyData< _TPolyLine >::
New( )
{
  return( new Self( ) );
}

// -------------------------------------------------------------------------
template< class _TPolyLine >
const typename
cpExtensions::Visualization::PolyLineParametricPathToPolyData< _TPolyLine >::
TPolyLine*
cpExtensions::Visualization::PolyLineParametricPathToPolyData< _TPolyLine >::
GetInput( ) const
{
  return( this->m_PolyLine );
}

// -------------------------------------------------------------------------
template< class _TPolyLine >
void
cpExtensions::Visualization::PolyLineParametricPathToPolyData< _TPolyLine >::
SetInput( const TPolyLine* pl )
{
  if( this->m_PolyLine != pl )
  {
    this->m_PolyLine = pl;
    this->Modified( );

  } // fi
}

// -------------------------------------------------------------------------
template< class _TPolyLine >
cpExtensions::Visualization::PolyLineParametricPathToPolyData< _TPolyLine >::
PolyLineParametricPathToPolyData( )
  : vtkPolyDataAlgorithm( ),
    m_PolyLine( NULL )
{
  this->SetNumberOfInputPorts( 0 );
}

// -------------------------------------------------------------------------
template< class _TPolyLine >
cpExtensions::Visualization::PolyLineParametricPathToPolyData< _TPolyLine >::
~PolyLineParametricPathToPolyData( )
{
}

// -------------------------------------------------------------------------
template< class _TPolyLine >
int
cpExtensions::Visualization::PolyLineParametricPathToPolyData< _TPolyLine >::
RequestData(
  vtkInformation* information,
  vtkInformationVector** input,
  vtkInformationVector* output
  )
{
  static const unsigned int dim = _TPolyLine::PathDimension;

  if( this->m_PolyLine == NULL )
    return( 0 );

  // Get output
  vtkInformation* info = output->GetInformationObject( 0 );
  vtkPolyData* out = vtkPolyData::SafeDownCast(
    info->Get( vtkDataObject::DATA_OBJECT( ) )
    );

  // Prepare data
  out->SetPoints( vtkSmartPointer< vtkPoints >::New( ) );
  out->SetVerts( vtkSmartPointer< vtkCellArray >::New( ) );
  out->SetLines( vtkSmartPointer< vtkCellArray >::New( ) );
  out->SetPolys( vtkSmartPointer< vtkCellArray >::New( ) );
  out->SetStrips( vtkSmartPointer< vtkCellArray >::New( ) );
  vtkPoints* points = out->GetPoints( );
  vtkCellArray* lines = out->GetLines( );

  // Get data
  for( unsigned long i = 0; i < this->m_PolyLine->GetSize( ); ++i )
  {
    typename _TPolyLine::TPoint pnt = this->m_PolyLine->GetPoint( i );
    if( dim == 1 )      points->InsertNextPoint( pnt[ 0 ], 0, 0 );
    else if( dim == 2 ) points->InsertNextPoint( pnt[ 0 ], pnt[ 1 ], 0 );
    else                points->InsertNextPoint( pnt[ 0 ], pnt[ 1 ], pnt[ 2 ] );
    if( i > 0 )
    {
      lines->InsertNextCell( 2 );
      lines->InsertCellPoint( i - 1 );
      lines->InsertCellPoint( i );

    } // fi

  } // rof
  return( 1 );
}

// -------------------------------------------------------------------------
template< class _TPolyLine >
int
cpExtensions::Visualization::PolyLineParametricPathToPolyData< _TPolyLine >::
RequestInformation(
  vtkInformation* information,
  vtkInformationVector** input,
  vtkInformationVector* output
  )
{
  return( 1 );
}

// -------------------------------------------------------------------------
#include <cpExtensions/DataStructures/PolyLineParametricPath.h>

template class cpExtensions::Visualization::PolyLineParametricPathToPolyData< cpExtensions::DataStructures::PolyLineParametricPath< 1 > >;
template class cpExtensions::Visualization::PolyLineParametricPathToPolyData< cpExtensions::DataStructures::PolyLineParametricPath< 2 > >;
template class cpExtensions::Visualization::PolyLineParametricPathToPolyData< cpExtensions::DataStructures::PolyLineParametricPath< 3 > >;
template class cpExtensions::Visualization::PolyLineParametricPathToPolyData< cpExtensions::DataStructures::PolyLineParametricPath< 4 > >;

// eof - $RCSfile$