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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkAddPixelAccessor.h,v $
Language: C++
Date: $Date: 2006-03-16 11:43:26 $
Version: $Revision: 1.3 $
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 __itkAddPixelAccessor_h
#define __itkAddPixelAccessor_h
namespace itk
{
namespace Accessor
{
/** \class AddPixelAccessor
* \brief Simulates the effect of adding a constant value to all pixels
*
* This class is intended to be used as parameter of
* an ImageAdaptor to make an image appear as having
* pixels with intensity values increased by a constant amount.
*
* \sa ImageAdaptor
* \ingroup ImageAdaptors
*/
template <class TPixel>
class ITK_EXPORT AddPixelAccessor
{
public:
/** Standard class typedefs. */
typedef AddPixelAccessor Self;
/** External typedef. It defines the external aspect
* that this class will exhibit */
typedef TPixel ExternalType;
/** Internal typedef. It defines the internal real
* representation of data */
typedef TPixel InternalType;
/** Write access to the pixel */
inline void Set( InternalType & output, const ExternalType & input ) const
{ output = static_cast<InternalType>( input - m_Value ); }
/** Read access to the pixel */
inline ExternalType Get( const InternalType & input ) const
{ return static_cast<ExternalType>( input + m_Value ); }
/** Set the value to be added to pixels */
void SetValue( TPixel newvalue )
{ m_Value = newvalue; }
/** Get the value to be added to pixels */
TPixel GetValue()
{ return m_Value; }
/** Assignment Operator */
Self & operator=( const Self & apa )
{
this->m_Value = apa.m_Value;
return *this;
}
/** Constructors */
AddPixelAccessor():m_Value( NumericTraits<TPixel>::Zero ) {}
AddPixelAccessor( const Self & apa ):m_Value(apa.m_Value) {}
private:
TPixel m_Value;
};
} // end namespace Accessor
} // end namespace itk
#endif
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