#include "Tautology.h"

#include <cpInstances/DataObjects/Image.h>

#include <itkImage.h>
#include <fpa/Base/Functors/RegionGrow/Tautology.h>

// -------------------------------------------------------------------------
void fpaPlugins_ImageFunctors::Tautology::
Instantiate( itk::LightObject* filter )
{
  auto itk_filter = dynamic_cast< itk::ProcessObject* >( filter );
  if( itk_filter != NULL )
  {
    auto inputs = itk_filter->GetInputs( );
    if( inputs.size( ) > 0 )
    {
      cpPlugins_Demangle_Image_ScalarPixels_AllDims_2(
        inputs[ 0 ].GetPointer( ), _GD0, itk_filter
        )
        this->_Error( "Invalid input data." );
    }
    else
      this->_Error( "Not enough inputs." );
  }
  else
    this->_Error( "Invalid instantiation filter." );
}

// -------------------------------------------------------------------------
fpaPlugins_ImageFunctors::Tautology::
Tautology( )
  : Superclass( )
{
  this->_ConfigureOutput< cpPlugins::Pipeline::DataObject >( "Functor" );
  this->GetOutput( "Functor" )->SetITK( this );
}

// -------------------------------------------------------------------------
fpaPlugins_ImageFunctors::Tautology::
~Tautology( )
{
}

// -------------------------------------------------------------------------
void fpaPlugins_ImageFunctors::Tautology::
_GenerateData( )
{
}

// -------------------------------------------------------------------------
template< class _TInput >
void fpaPlugins_ImageFunctors::Tautology::
_GD0( _TInput* input, itk::ProcessObject* filter )
{
  auto outputs = filter->GetOutputs( );
  if( outputs.size( ) > 0 )
  {
    cpPlugins_Demangle_Image_IntPixels_3(
      outputs[ 0 ].GetPointer( ), _GD1, _TInput::ImageDimension, input, filter
      )
      this->_Error( "Invalid output data." );
  }
  else
    this->_Error( "Not enough outputs." );
}

// -------------------------------------------------------------------------
template< class _TInput, class _TOutput >
void fpaPlugins_ImageFunctors::Tautology::
_GD1( _TOutput* output, _TInput* input, itk::ProcessObject* filter )
{
  typedef typename _TInput::IndexType  _TVertex;
  typedef typename _TOutput::PixelType _TValue;
  typedef fpa::Base::Functors::RegionGrow::Tautology< _TVertex, _TValue > _TFunctor;

  auto f = dynamic_cast< _TFunctor* >( this->m_Functor.GetPointer( ) );
  if( f == NULL )
  {
    typename _TFunctor::Pointer ptr_f = _TFunctor::New( );
    f = ptr_f.GetPointer( );
    this->m_Functor = f;

  } // fi
}

// eof - $RCSfile$