#include <cpPluginsImageFilters/CastImageFilter.h>
#include <cpPlugins/Image.h>
#include <cpPlugins_Instances/ScalarImagesBaseFilters.h>

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

  std::vector< std::string > choices;
  choices.push_back( "char" );
  choices.push_back( "short" );
  choices.push_back( "int" );
  choices.push_back( "long" );
  choices.push_back( "uchar" );
  choices.push_back( "ushort" );
  choices.push_back( "uint" );
  choices.push_back( "ulong" );
  choices.push_back( "float" );
  choices.push_back( "double" );
  this->m_Parameters.ConfigureAsChoices( "CastType", choices );
  this->m_Parameters.SetSelectedChoice( "CastType", "uchar" );
}

// -------------------------------------------------------------------------
cpPluginsImageFilters::CastImageFilter::
~CastImageFilter( )
{
}

// -------------------------------------------------------------------------
void cpPluginsImageFilters::CastImageFilter::
_GenerateData( )
{
  auto image = this->GetInputData< itk::DataObject >( "Input" );
  cpPlugins_Image_Demangle_Pixel_AllScalars     ( _GD0, image, 1 );
  else cpPlugins_Image_Demangle_Pixel_AllScalars( _GD0, image, 2 );
  else cpPlugins_Image_Demangle_Pixel_AllScalars( _GD0, image, 3 );
  else cpPlugins_Image_Demangle_Pixel_AllScalars( _GD0, image, 4 );
  else this->_Error( "No valid input image." );
}

// -------------------------------------------------------------------------
template< class _TInputImage >
void cpPluginsImageFilters::CastImageFilter::
_GD0( _TInputImage* image )
{
  auto out = this->m_Parameters.GetSelectedChoice( "CastType" );
  if( out == "char" )
    this->_GD1< _TInputImage, char >( image );
  else if( out == "short" )
    this->_GD1< _TInputImage, short >( image );
  else if( out == "int" )
    this->_GD1< _TInputImage, int >( image );
  else if( out == "long" )
    this->_GD1< _TInputImage, long >( image );
  else if( out == "float" )
    this->_GD1< _TInputImage, float >( image );
  else if( out == "double" )
    this->_GD1< _TInputImage, double >( image );
  else if( out == "uchar" )
    this->_GD1< _TInputImage, unsigned char >( image );
  else if( out == "ushort" )
    this->_GD1< _TInputImage, unsigned short >( image );
  else if( out == "uint" )
    this->_GD1< _TInputImage, unsigned int >( image );
  else if( out == "ulong" )
    this->_GD1< _TInputImage, unsigned long >( image );
  else
    this->_Error( "Invalid output casting type." );
}

// -------------------------------------------------------------------------
template< class _TInputImage, class _TOutputPixel >
void cpPluginsImageFilters::CastImageFilter::
_GD1( _TInputImage* image )
{
  typedef itk::Image< _TOutputPixel, _TInputImage::ImageDimension > _TOutputImage;
  typedef itk::CastImageFilter< _TInputImage, _TOutputImage > _TFilter;

  // Configure filter
  auto filter = this->_CreateITK< _TFilter >( );
  filter->SetInput( image );
  filter->Update( );

  // Connect output
  this->GetOutput( "Output" )->SetITK( filter->GetOutput( ) );
}

// eof - $RCSfile$