/usr/include/ITK-4.5/itkDefaultConvertPixelTraits.h is in libinsighttoolkit4-dev 4.5.0-3.
This file is owned by root:root, with mode 0o644.
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*
* Copyright Insight Software Consortium
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0.txt
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*=========================================================================*/
#ifndef __itkDefaultConvertPixelTraits_h
#define __itkDefaultConvertPixelTraits_h
#include "itkOffset.h"
#include "itkVector.h"
#include "itkMatrix.h"
#include "itkVariableLengthVector.h"
#include "itkVariableSizeMatrix.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 inferred
* 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.
* \ingroup ITKCommon
*/
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(); }
static unsigned int GetNumberOfComponents( const PixelType itkNotUsed(pixel) )
{ 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 unsigned int GetNumberOfComponents(const type) \
{ \
return 1; \
} \
static void SetNthComponent(int, type & pixel, const ComponentType &v) \
{ \
pixel = v; \
} \
static type GetNthComponent(int, const type pixel) \
{ \
return pixel; \
} \
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(long long)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(unsigned long long)
ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL(bool)
#undef ITK_DEFAULTCONVERTTRAITS_NATIVE_SPECIAL
//
// Default traits for the Offset<> pixel type
//
template<unsigned int VDimension>
class DefaultConvertPixelTraits< Offset< VDimension > >
{
public:
typedef Offset< VDimension > TargetType;
typedef typename TargetType::OffsetValueType ComponentType;
static unsigned int GetNumberOfComponents()
{
return VDimension;
}
static void SetNthComponent(int i, TargetType & pixel, const ComponentType &v)
{
pixel[i] = v;
}
static ComponentType GetScalarValue(const TargetType &pixel)
{
return pixel[0];
}
};
//
// Default traits for the pixel types deriving from FixedArray<>
//
#define ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(type) \
template<typename TComponentType, unsigned VDimension > \
class DefaultConvertPixelTraits< type< TComponentType, VDimension > > \
{ \
public: \
typedef type< TComponentType, VDimension > TargetType; \
typedef TComponentType ComponentType; \
static unsigned int GetNumberOfComponents() \
{ \
return VDimension; \
} \
static unsigned int GetNumberOfComponents( const TargetType ) \
{ \
return VDimension; \
} \
static void SetNthComponent(int i, TargetType & pixel, \
const ComponentType &v) \
{ \
pixel[i] = v; \
} \
static ComponentType GetNthComponent(int i, const TargetType pixel) \
{ \
return pixel[i]; \
} \
static ComponentType GetScalarValue(const TargetType &pixel) \
{ \
return pixel[0]; \
} \
} \
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(Vector);
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(CovariantVector);
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(Point);
ITK_DEFAULTCONVERTTRAITS_FIXEDARRAY_TYPE(FixedArray);
//
// End of Traits for the classes deriving from FixedArray.
//
//
//
// Default traits for pixel types deriving from VariableLengthVector<>
//
template<typename VComponent>
class DefaultConvertPixelTraits< VariableLengthVector< VComponent > >
{
public:
typedef VariableLengthVector< VComponent > TargetType;
typedef VComponent ComponentType;
static unsigned int GetNumberOfComponents()
{
return 0;
}
static unsigned int GetNumberOfComponents( const TargetType pixel )
{
return pixel.Size();
}
static void SetNthComponent(int i, TargetType & pixel,
const ComponentType &v)
{
pixel[i] = v;
}
static ComponentType GetNthComponent(int i, const TargetType & pixel)
{
return pixel[i];
}
static ComponentType GetScalarValue(const TargetType &pixel)
{
return pixel.GetNorm();
}
};
//
// Default traits for pixel types deriving from VariableSizeMatrix<>
//
template<typename VComponent>
class DefaultConvertPixelTraits< VariableSizeMatrix< VComponent > >
{
public:
typedef VariableSizeMatrix< VComponent > TargetType;
typedef VComponent ComponentType;
static unsigned int GetNumberOfComponents()
{
return 0;
}
static unsigned int GetNumberOfComponents( const TargetType pixel )
{
return pixel.Cols() * pixel.Rows();
}
static void SetNthComponent(int i, TargetType & pixel,
const ComponentType &v)
{
const unsigned int row = i / pixel.Cols();
const unsigned int col = i % pixel.Cols();
pixel(row,col) = v;
}
static ComponentType GetNthComponent(int i, const TargetType & pixel)
{
const unsigned int row = i / pixel.Cols();
const unsigned int col = i % pixel.Cols();
return pixel(row,col);
}
static ComponentType GetScalarValue(const TargetType &)
{
return 0.0;
}
};
//
// End of Traits for the classes deriving from FixedArray.
//
//
//
// Default traits for the pixel types deriving from Matrix<>
//
template<typename VComponent, unsigned VRows, unsigned VCols >
class DefaultConvertPixelTraits< Matrix< VComponent, VRows, VCols > >
{
public:
typedef Matrix< VComponent, VRows, VCols > TargetType;
typedef VComponent ComponentType;
static unsigned int GetNumberOfComponents()
{
return VRows * VCols;
}
static void SetNthComponent(int i, TargetType & pixel,
const ComponentType &v)
{
const unsigned int row = i / VCols;
const unsigned int col = i % VCols;
pixel[row][col] = v;
}
static ComponentType GetNthComponent(int i, const TargetType & pixel)
{
const unsigned int row = i / VCols;
const unsigned int col = i % VCols;
return pixel[row][col];
}
static ComponentType GetScalarValue(const TargetType &pixel)
{
return pixel[0][0];
}
};
//
// Default traits for the pixel types deriving from std::complex<>
//
template<typename TComponent >
class DefaultConvertPixelTraits< ::std::complex< TComponent > >
{
public:
typedef::std::complex< TComponent > TargetType;
typedef TComponent 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);
}
};
//
// End of Traits for the classes deriving from std::complex.
//
//
} // end namespace itk
#endif
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