#include <ImageGenericFilters/GaussianBlurImageFilter.h>
#include <cpPlugins/DataObjects/Image.h>
#include <cpPlugins/DataObjects/Image_Demanglers.h>

#include <itkImage.h>
#include <itkGaussianBlurImageFunction.h>

// -------------------------------------------------------------------------
cpPluginsImageGenericFilters::GaussianBlurImageFilter::
GaussianBlurImageFilter( )
  : Superclass( )
{
  typedef cpPlugins::DataObjects::Image _TImage;
  this->_ConfigureInput< _TImage >( "Input", true, false );
  this->_ConfigureOutput< _TImage >( "Output" );

  this->m_Parameters.ConfigureAsReal( "MaximumError", 1e-3 );
  this->m_Parameters.ConfigureAsReal( "Sigma", 1 );
  this->m_Parameters.ConfigureAsUint( "MaximumKernelWidth", 32 );
  this->m_Parameters.ConfigureAsRealTypesChoices( "OutputResolution" );
}

// -------------------------------------------------------------------------
cpPluginsImageGenericFilters::GaussianBlurImageFilter::
~GaussianBlurImageFilter( )
{
}

// -------------------------------------------------------------------------
void cpPluginsImageGenericFilters::GaussianBlurImageFilter::
_GenerateData( )
{
  auto o = this->GetInputData( "Input" );
  cpPlugins_Demangle_Image_ScalarPixels_AllDims_1( o, _GD0 )
    this->_Error( "Invalid input image." );
}

// -------------------------------------------------------------------------
template< class _TInput >
void cpPluginsImageGenericFilters::GaussianBlurImageFilter::
_GD0( _TInput* input )
{
  std::string t = this->m_Parameters.GetSelectedChoice( "OutputResolution" );
#ifdef cpPlugins_CONFIG_REAL_TYPES_float
  if( t == "float" ) this->_GD1< _TInput, float >( input );
#endif // cpPlugins_CONFIG_REAL_TYPES_float
#ifdef cpPlugins_CONFIG_REAL_TYPES_double
  if( t == "double" ) this->_GD1< _TInput, double >( input );
#endif // cpPlugins_CONFIG_REAL_TYPES_double
}

// -------------------------------------------------------------------------
template< class _TInput, class _TOutputPixel >
void cpPluginsImageGenericFilters::GaussianBlurImageFilter::
_GD1( _TInput* input )
{
  /* TODO
     typedef itk::GaussianBlurImageFunction< _TInput, _TOutputPixel > _TFunction;
     typedef itk::Image< _TOutputPixel, _TInput::ImageDimension > _TOutput;
     typedef itk::UnaryFunctorImageFilter< _TInput, _TOutput, _TFunction > _TFilter;

     auto filter = this->_CreateITK< _TFilter >( );
     filter->SetInput( input );

     typename _TFunction::ErrorArrayType e;
     e.Fill( this->m_Parameters.GetReal( "MaximumError" ) );
     filter->GetFunctor( ).SetMaximumError( e );
     filter->GetFunctor( ).SetSigma( this->m_Parameters.GetReal( "Sigma" ) );
     filter->GetFunctor( ).SetMaximumKernelWidth(
     this->m_Parameters.GetUint( "MaximumKernelWidth" )
     );
     filter->Update( );
     this->GetOutput( "Output" )->SetITK( filter->GetOutput( ) );
  */
}

// eof - $RCSfile$