#include "GradientBaseImageFunctionSource.h"

#include <cpPlugins/Image.h>
#include <fpa_Instances/Functors.h>

// -------------------------------------------------------------------------
fpaPlugins::GradientBaseImageFunctionSource::
GradientBaseImageFunctionSource( )
  : Superclass( )
{
  this->_AddInput( "Input" );
  this->_AddOutput< cpPlugins::Image >( "Output" );

  std::vector< std::string > choices;
  choices.push_back( "Gulsun&Tek" );
  choices.push_back( "Flux" );
  choices.push_back( "MFlux" );
  this->m_Parameters.ConfigureAsChoices( "FunctionType", choices );
  this->m_Parameters.SetSelectedChoice( "FunctionType", "Gulsun&Tek" );

  this->m_Parameters.ConfigureAsReal( "MinRadius" );
  this->m_Parameters.ConfigureAsReal( "MaxRadius" );
  this->m_Parameters.ConfigureAsUint( "ProfileSampling" );
  this->m_Parameters.ConfigureAsUint( "RadialSampling" );
  this->m_Parameters.SetReal( "MinRadius", 0 );
  this->m_Parameters.SetReal( "MaxRadius", 1 );
  this->m_Parameters.SetUint( "ProfileSampling", 4 );
  this->m_Parameters.SetUint( "RadialSampling", 10 );
}

// -------------------------------------------------------------------------
fpaPlugins::GradientBaseImageFunctionSource::
~GradientBaseImageFunctionSource( )
{
}

// -------------------------------------------------------------------------
std::string fpaPlugins::GradientBaseImageFunctionSource::
_GenerateData( )
{
  auto image = this->GetInputData( "Input" )->GetITK< itk::DataObject >( );
  std::string   cpPlugin_Image_Demangle_VectorPixel_AllFloats( r, _GD0, image, itk::CovariantVector, 2 );
  if( r != "" ) cpPlugin_Image_Demangle_VectorPixel_AllFloats( r, _GD0, image, itk::CovariantVector, 3 );
  return( r );
}

// -------------------------------------------------------------------------
template< class _TImage >
std::string fpaPlugins::GradientBaseImageFunctionSource::
_GD0( _TImage* image )
{
  typedef fpa::Image::Functors::GulsunTekMedialness< _TImage > _TGT;
  typedef fpa::Image::Functors::FluxMedialness< _TImage > _TFl;
  typedef fpa::Image::Functors::MFluxMedialness< _TImage > _TMFl;

  if( image == NULL )
    return( "GradientBaseImageFunctionSource: Invalid input image." );

  auto ft = this->m_Parameters.GetSelectedChoice( "FunctionType" );
  if     ( ft == "Gulsun&Tek" ) return( this->_GD1< _TImage, _TGT >( image ) );
  else if( ft == "Flux" )       return( this->_GD1< _TImage, _TFl >( image ) );
  else if( ft == "MFlux" )      return( this->_GD1< _TImage, _TMFl >( image ) );
  else
    return( "GradientBaseImageFunctionSource: Invalid function type." );
}

// -------------------------------------------------------------------------
template< class _TImage, class _TFunction >
std::string fpaPlugins::GradientBaseImageFunctionSource::
_GD1( _TImage* image )
{
  typedef itk::Image< typename _TFunction::TOutput, _TImage::ImageDimension > _TOutImage;
  typedef cpExtensions::Algorithms::ImageFunctionFilter< _TImage, _TOutImage, _TFunction > _TFilter;

  _TFilter* filter = this->_CreateITK< _TFilter >( );
  filter->SetInput( image );
  _TFunction* function = filter->GetFunction( );
  if( function == NULL )
  {
    filter->SetFunction( _TFunction::New( ) );
    function = filter->GetFunction( );

  } // fi
  function->SetMinRadius( this->m_Parameters.GetReal( "MinRadius" ) );
  function->SetMaxRadius( this->m_Parameters.GetReal( "MaxRadius" ) );
  /*
    function->SetProfileSampling( this->m_Parameters.GetUint( "ProfileSampling" ) );
    function->SetRadialSampling( this->m_Parameters.GetUint( "RadialSampling" ) );
  */

  filter->Update( );

  // Connect output and finish
  this->GetOutputData( "Output" )->SetITK( filter->GetOutput( ) );
  return( "" );
}

// eof - $RCSfile$