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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 )
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<TInputImage,TOutputImage,
00066 Function::Square< typename TInputImage::PixelType,
00067 typename TOutputImage::PixelType> > Superclass;
00068 typedef SmartPointer<Self> Pointer;
00069 typedef SmartPointer<const Self> ConstPointer;
00070
00072 itkNewMacro(Self);
00073
00074 #ifdef ITK_USE_CONCEPT_CHECKING
00075
00076 itkConceptMacro(InputHasNumericTraitsCheck,
00077 (Concept::HasNumericTraits<typename TInputImage::PixelType>));
00078 itkConceptMacro(RealTypeMultiplyOperatorCheck,
00079 (Concept::MultiplyOperator<typename NumericTraits<typename TInputImage::PixelType>::RealType>));
00080
00082 #endif
00083
00084 protected:
00085 SquareImageFilter() {}
00086 virtual ~SquareImageFilter() {}
00087
00088 private:
00089 SquareImageFilter(const Self&);
00090 void operator=(const Self&);
00091
00092 };
00093
00094 }
00095
00096
00097 #endif
00098