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itkSquareImageFilter.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkSquareImageFilter.h,v $
00005   Language:  C++
00006   Date:      $Date: 2009-04-01 14:36:34 $
00007   Version:   $Revision: 1.10 $
00008 
00009   Copyright (c) Insight Software Consortium. All rights reserved.
00010   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
00011 
00012      This software is distributed WITHOUT ANY WARRANTY; without even 
00013      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00014      PURPOSE.  See the above copyright notices for more information.
00015 
00016 =========================================================================*/
00017 #ifndef __itkSquareImageFilter_h
00018 #define __itkSquareImageFilter_h
00019 
00020 #include "itkUnaryFunctorImageFilter.h"
00021 
00022 namespace itk
00023 {
00024   
00031 namespace Function {  
00032   
00033 template< class TInput, class TOutput>
00034 class Square
00035 {
00036 public:
00037   typedef typename NumericTraits<TInput>::RealType RealType;
00038   Square() {}
00039   ~Square() {}
00040   bool operator!=( const Square & ) const
00041     {
00042     return false;
00043     }
00044   bool operator==( const Square & other ) const
00045     {
00046     return !(*this != other);
00047     }
00048   inline TOutput operator()( const TInput & A ) const
00049     {
00050     const RealType ra = static_cast<RealType>( A );
00051     return static_cast<TOutput>( ra * ra );
00052     }
00053 }; 
00054 }
00055 template <class TInputImage, class TOutputImage>
00056 class ITK_EXPORT SquareImageFilter :
00057     public
00058 UnaryFunctorImageFilter<TInputImage,TOutputImage, 
00059                         Function::Square< typename TInputImage::PixelType, 
00060                                           typename TOutputImage::PixelType>   >
00061 {
00062 public:
00064   typedef SquareImageFilter                                Self;
00065   typedef UnaryFunctorImageFilter<
00066     TInputImage,TOutputImage, 
00067     Function::Square< typename TInputImage::PixelType, 
00068                       typename TOutputImage::PixelType> >  Superclass;
00069   typedef SmartPointer<Self>                               Pointer;
00070   typedef SmartPointer<const Self>                         ConstPointer;
00071 
00073   itkNewMacro(Self);
00074 
00076   itkTypeMacro(SquareImageFilter, 
00077                UnaryFunctorImageFilter);
00078 
00079 #ifdef ITK_USE_CONCEPT_CHECKING
00080 
00081   itkConceptMacro(InputHasNumericTraitsCheck,
00082     (Concept::HasNumericTraits<typename TInputImage::PixelType>));
00083   itkConceptMacro(RealTypeMultiplyOperatorCheck,
00084     (Concept::MultiplyOperator<typename NumericTraits<typename TInputImage::PixelType>::RealType>));
00085 
00087 #endif
00088 
00089 protected:
00090   SquareImageFilter() {}
00091   virtual ~SquareImageFilter() {}
00092 
00093 private:
00094   SquareImageFilter(const Self&); //purposely not implemented
00095   void operator=(const Self&); //purposely not implemented
00096 
00097 };
00098 
00099 } // end namespace itk
00100 
00101 
00102 #endif
00103 

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