/usr/include/InsightToolkit/IO/itkDefaultConvertPixelTraits.h is in libinsighttoolkit3-dev 3.20.1+git20120521-5.
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Program: Insight Segmentation & Registration Toolkit
Module: itkDefaultConvertPixelTraits.h
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 __itkDefaultConvertPixelTraits_h
#define __itkDefaultConvertPixelTraits_h
#include "itkOffset.h"
#include "itkCovariantVector.h"
#include "itkVector.h"
#include "itkPoint.h"
namespace itk
{
/** \class DefaultConvertPixelTraits
* \brief Traits class used to by ConvertPixels to convert blocks of pixels.
*
* TOutputPixelType is the destination type. The input type is infered
* by the templated static function Convert.
*
* This implementaion, does a simple assignment operator, so if you are
* going from from a higher bit representation to a lower bit one (int to
* char), you may want to specialize and add some sort of transfer function.
*/
template<typename PixelType>
class DefaultConvertPixelTraits
{
public:
/** Determine the pixel data type. */
typedef typename PixelType::ComponentType ComponentType;
/** Return the number of components per pixel. */
static unsigned int GetNumberOfComponents()
{ return PixelType::GetNumberOfComponents();}
/** Return the nth component of the pixel. */
static ComponentType GetNthComponent(int c, const PixelType& pixel)
{ return pixel.GetNthComponent(c); }
/** Set the nth component of the pixel. */
static void SetNthComponent(int c, PixelType& pixel, const ComponentType& v)
{ pixel.SetNthComponent(c, v); }
/** Return a single scalar value from this pixel. */
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(signed char)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(unsigned char)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(unsigned short)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(long)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(unsigned long)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(bool)
#undef ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL
//
// Default traits for the Offset<> pixel type
//
#define ITK_DEFAULTCONVERTTRAITS_OFFSET_TYPE(dimension) \
template<> \
class DefaultConvertPixelTraits< Offset<dimension> > \
{ \
public: \
typedef Offset<dimension> TargetType; \
typedef TargetType::OffsetValueType ComponentType; \
static unsigned int GetNumberOfComponents() \
{ \
return dimension; \
} \
static void SetNthComponent(int i, TargetType & pixel, const ComponentType& v) \
{ \
pixel[i] = v; \
} \
static ComponentType GetScalarValue(const TargetType& pixel) \
{ \
return pixel[0]; \
} \
}; \
// Define traits for Offset<> from dimensions 1 to 5
ITK_DEFAULTCONVERTTRAITS_OFFSET_TYPE(1)
ITK_DEFAULTCONVERTTRAITS_OFFSET_TYPE(2)
ITK_DEFAULTCONVERTTRAITS_OFFSET_TYPE(3)
ITK_DEFAULTCONVERTTRAITS_OFFSET_TYPE(4)
ITK_DEFAULTCONVERTTRAITS_OFFSET_TYPE(5)
//
// Default traits for the pixel types deriving from FixedArray<>
//
#define ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(type,componenttype, dimension) \
template<> \
class DefaultConvertPixelTraits< type< componenttype, dimension> > \
{ \
public: \
typedef type< componenttype, dimension > TargetType; \
typedef componenttype ComponentType; \
static unsigned int GetNumberOfComponents() \
{ \
return dimension; \
} \
static void SetNthComponent(int i, TargetType & pixel, const ComponentType& v) \
{ \
pixel[i] = v; \
} \
static ComponentType GetScalarValue(const TargetType& pixel) \
{ \
return pixel[0]; \
} \
}; \
//
//
// Define traits for Classed deriving from FixedArray from dimensions 1 to 6
// These classes include: Vector, CovariantVector and Point.
//
//
#define ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, Type) \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(ArrayType,Type,1) \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(ArrayType,Type,2) \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(ArrayType,Type,3) \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(ArrayType,Type,4) \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(ArrayType,Type,5) \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(ArrayType,Type,6)
#define ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_TYPES_MACRO(ArrayType) \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, char); \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, signed char); \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, unsigned char); \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, short); \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, unsigned short); \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, int); \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, unsigned int); \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, long); \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, unsigned long); \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, float); \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_MACRO(ArrayType, double);
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_TYPES_MACRO(Vector);
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_TYPES_MACRO(CovariantVector);
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_TYPES_MACRO(Point);
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE_ALL_TYPES_MACRO(FixedArray);
//
// End of Traits for the classes deriving from FixedArray.
//
//
//
// Default traits for the pixel types deriving from Matrix<>
//
#define ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE(type,componenttype,rows,cols) \
template<> \
class DefaultConvertPixelTraits< type< componenttype, rows, cols > > \
{ \
public: \
typedef type< componenttype, rows, cols > TargetType; \
typedef componenttype ComponentType; \
static unsigned int GetNumberOfComponents() \
{ \
return rows * cols; \
} \
static void SetNthComponent(int i, TargetType & pixel, const ComponentType& v) \
{ \
const unsigned int row = i / cols; \
const unsigned int col = i % cols; \
pixel[row][col] = v; \
} \
static ComponentType GetScalarValue(const TargetType& pixel) \
{ \
return pixel[0][0]; \
} \
}; \
//
//
// Define traits for Classed deriving from Matrix from dimensions 1 to 6
//
//
#define ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, Type) \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE(ArrayType,Type,1,1) \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE(ArrayType,Type,2,2) \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE(ArrayType,Type,3,3) \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE(ArrayType,Type,4,4) \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE(ArrayType,Type,5,5) \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE(ArrayType,Type,6,6)
#define ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_TYPES_MACRO(ArrayType) \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, char); \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, signed char); \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, unsigned char); \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, short); \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, unsigned short); \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, int); \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, unsigned int); \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, long); \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, unsigned long); \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, float); \
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_MACRO(ArrayType, double);
//
// Add here other classes that derive from Matrix or that have the same API
//
ITK_DEFAULTCONVERTTRAITS_MATRIX_TYPE_ALL_TYPES_MACRO(Matrix);
//
// End of Traits for the classes deriving from Matrix.
//
//
//
// Default traits for the pixel types deriving from std::complex<>
//
#define ITK_DEFAULTCONVERTTRAITS_COMPLEX_TYPE( componenttype ) \
template<> \
class DefaultConvertPixelTraits< ::std::complex< componenttype > > \
{ \
public: \
typedef ::std::complex< componenttype> TargetType; \
typedef componenttype ComponentType; \
static unsigned int GetNumberOfComponents() \
{ \
return 2; \
} \
static void SetNthComponent(int i, TargetType & pixel, const ComponentType& v) \
{ \
if( i == 0 ) \
{ \
pixel = TargetType( v, pixel.imag() ); \
} \
else \
{ \
pixel = TargetType( pixel.real(), v ); \
} \
} \
static ComponentType GetScalarValue(const TargetType& pixel) \
{ \
return std::norm(pixel); \
} \
}; \
ITK_DEFAULTCONVERTTRAITS_COMPLEX_TYPE(float);
ITK_DEFAULTCONVERTTRAITS_COMPLEX_TYPE(double);
//
// End of Traits for the classes deriving from std::complex.
//
//
} // end namespace itk
#endif
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