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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: itkMatrixIndexSelectionImageFilter.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 __itkMatrixIndexSelectionImageFilter_h
#define __itkMatrixIndexSelectionImageFilter_h
#include "itkUnaryFunctorImageFilter.h"
namespace itk
{
namespace Functor {
template< class TInput, class TOutput>
class MatrixIndexSelection
{
public:
MatrixIndexSelection() {m_I = m_J = 0;}
~MatrixIndexSelection() {}
void GetIndices(unsigned int& i, unsigned int& j) const {i= m_I; j=m_J;}
void SetIndices(unsigned int i,unsigned int j) {m_I= i; m_J =j;}
bool operator!=( const MatrixIndexSelection & other ) const
{
if( m_I != other.m_I ||
m_J != other.m_J )
{
return true;
}
return false;
}
bool operator==( const MatrixIndexSelection & other ) const
{
return !(*this != other);
}
inline TOutput operator()( const TInput & A ) const
{
return static_cast<TOutput>( A[m_I][m_J] );
}
private:
unsigned int m_I;
unsigned int m_J;
};
}
/** \class MatrixIndexSelectionImageFilter
*
* \brief Extracts the selected indices of a matrix image that is the input
* pixel type
*
* This filter is templated over the input image type and
* output image type.
*
* The filter expect the input image pixel type to be a matrix and
* the output image pixel type to be a scalar. The only requirement on
* the type used for representing the vector is that it must provide an
* operator(i,j).
*
* \ingroup IntensityImageFilters Multithreaded
*/
template <class TInputImage, class TOutputImage>
class ITK_EXPORT MatrixIndexSelectionImageFilter :
public
UnaryFunctorImageFilter<TInputImage,TOutputImage,Functor::MatrixIndexSelection< typename TInputImage::PixelType,typename TOutputImage::PixelType> >
{
public:
/** Standard class typedefs. */
typedef MatrixIndexSelectionImageFilter Self;
typedef UnaryFunctorImageFilter<TInputImage,TOutputImage,Functor::MatrixIndexSelection<typename TInputImage::PixelType,typename TOutputImage::PixelType> > Superclass;
typedef SmartPointer<Self> Pointer;
typedef SmartPointer<const Self> ConstPointer;
/** Run-time type information (and related methods). */
itkTypeMacro( MatrixIndexSelectionImageFilter, UnaryFunctorImageFilter );
/** Method for creation through the object factory. */
itkNewMacro(Self);
/** Get/Set methods for the index */
void SetIndices(unsigned int i, unsigned int j)
{
this->GetFunctor().SetIndices(i,j);
this->Modified();
}
void GetIndices(unsigned int& i, unsigned int& j) const
{ return this->GetFunctor().GetIndices(i,j); }
#ifdef ITK_USE_CONCEPT_CHECKING
/** Begin concept checking */
itkConceptMacro(InputHasNumericTraitsCheck,
(Concept::HasNumericTraits<typename TInputImage::PixelType::ValueType>));
/** End concept checking */
#endif
protected:
MatrixIndexSelectionImageFilter() {}
virtual ~MatrixIndexSelectionImageFilter() {}
private:
MatrixIndexSelectionImageFilter(const Self&); //purposely not implemented
void operator=(const Self&); //purposely not implemented
};
} // end namespace itk
#endif
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