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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkOverUnderColormapFunctor.txx
Language: C++
Date: $Date$
Version: $Revision$
Copyright (c) Insight Software Consortium. All rights reserved.
See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
This software is distributed WITHOUT ANY WARRANTY; without even
the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
PURPOSE. See the above copyright notices for more information.
=========================================================================*/
#ifndef __itkOverUnderColormapFunctor_txx
#define __itkOverUnderColormapFunctor_txx
#include "itkOverUnderColormapFunctor.h"
namespace itk {
namespace Functor {
template <class TScalar, class TRGBPixel>
typename OverUnderColormapFunctor<TScalar, TRGBPixel>::RGBPixelType
OverUnderColormapFunctor<TScalar, TRGBPixel>
::operator()( const TScalar & v ) const
{
// Map the input scalar between [0, 1].
RealType value = this->RescaleInputValue( v );
// Apply the color mapping.
RealType red = value;
RealType green = value;
RealType blue = value;
if( value == 0.0 )
{
// pixel is saturated in the dark
red = 0.0;
green = 0.0;
blue = 1.0;
}
else if( value == 1.0 )
{
// pixel is saturated in the white
red = 1.0;
green = 0.0;
blue = 0.0;
}
// Set the rgb components after rescaling the values.
RGBPixelType pixel;
pixel[0] = this->RescaleRGBComponentValue( red );
pixel[1] = this->RescaleRGBComponentValue( green );
pixel[2] = this->RescaleRGBComponentValue( blue );
return pixel;
}
} // end namespace Functor
} // end namespace itk
#endif
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