itkDefaultConvertPixelTraits.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkDefaultConvertPixelTraits.h,v $
  Language:  C++
  Date:      $Date: 2002/05/20 20:20:53 $
  Version:   $Revision: 1.5 $

  Copyright (c) 2002 Insight 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 __itkDefaultConvertPixelTraits_h
#define __itkDefaultConvertPixelTraits_h
namespace itk
{
  
template<typename PixelType>
class DefaultConvertPixelTraits
{
public:
  typedef typename PixelType::ComponentType ComponentType;

  static unsigned int GetNumberOfComponents() 
    { return PixelType::GetNumberOfComponents();}
  
  static ComponentType GetNthComponent(int c, const PixelType& pixel) 
    { return pixel.GetNthComponent(c); }

  static void SetNthComponent(int c, PixelType& pixel, const ComponentType& v) 
    { pixel.SetNthComponent(c, v); }

  static ComponentType GetScalarValue(const PixelType& pixel)
    { return pixel.GetScalarValue(); }

};

#define ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(type)                    \
template<>                                                               \
class DefaultConvertPixelTraits<type>                                    \
{                                                                        \
public:                                                                  \
  typedef type ComponentType;                                            \
  static unsigned int GetNumberOfComponents()                                     \
    {                                                                    \
      return 1;                                                          \
    }                                                                    \
  static void SetNthComponent(int , type& pixel, const ComponentType& v) \
    {                                                                    \
      pixel = v;                                                         \
    }                                                                    \
  static type GetScalarValue(const type& pixel)                          \
    {                                                                    \
      return pixel;                                                      \
    }                                                                    \
};


ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(float)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(double)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(int)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(char)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(short)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(unsigned int)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(unsigned char)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(unsigned short)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(long)  
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(unsigned long)

#undef ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL
  
} // end namespace itk



#endif

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