ITK  4.1.0
Insight Segmentation and Registration Toolkit
itkMatrixIndexSelectionImageFilter.h
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00001 /*=========================================================================
00002  *
00003  *  Copyright Insight Software Consortium
00004  *
00005  *  Licensed under the Apache License, Version 2.0 (the "License");
00006  *  you may not use this file except in compliance with the License.
00007  *  You may obtain a copy of the License at
00008  *
00009  *         http://www.apache.org/licenses/LICENSE-2.0.txt
00010  *
00011  *  Unless required by applicable law or agreed to in writing, software
00012  *  distributed under the License is distributed on an "AS IS" BASIS,
00013  *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  *  See the License for the specific language governing permissions and
00015  *  limitations under the License.
00016  *
00017  *=========================================================================*/
00018 #ifndef __itkMatrixIndexSelectionImageFilter_h
00019 #define __itkMatrixIndexSelectionImageFilter_h
00020 
00021 #include "itkUnaryFunctorImageFilter.h"
00022 
00023 namespace itk
00024 {
00025 namespace Functor
00026 {
00027 template< class TInput, class TOutput >
00028 class MatrixIndexSelection
00029 {
00030 public:
00031   MatrixIndexSelection() { m_I = m_J = 0; }
00032   ~MatrixIndexSelection() {}
00033 
00034   void GetIndices(unsigned int & i, unsigned int & j) const { i = m_I; j = m_J; }
00035   void SetIndices(unsigned int i, unsigned int j) { m_I = i; m_J = j; }
00036 
00037   bool operator!=(const MatrixIndexSelection & other) const
00038   {
00039     if ( m_I != other.m_I
00040          || m_J != other.m_J  )
00041       {
00042       return true;
00043       }
00044     return false;
00045   }
00046 
00047   bool operator==(const MatrixIndexSelection & other) const
00048   {
00049     return !( *this != other );
00050   }
00051 
00052   inline TOutput operator()(const TInput & A) const
00053   {
00054     return static_cast< TOutput >( A[m_I][m_J] );
00055   }
00056 
00057 private:
00058   unsigned int m_I;
00059   unsigned int m_J;
00060 };
00061 }
00062 
00080 template< class TInputImage, class TOutputImage >
00081 class ITK_EXPORT MatrixIndexSelectionImageFilter:
00082   public
00083   UnaryFunctorImageFilter< TInputImage, TOutputImage,
00084                            Functor::MatrixIndexSelection< typename TInputImage::PixelType,
00085                                                           typename TOutputImage::PixelType > >
00086 {
00087 public:
00089   typedef MatrixIndexSelectionImageFilter
00090   Self;
00091   typedef UnaryFunctorImageFilter< TInputImage, TOutputImage,
00092                                    Functor::MatrixIndexSelection< typename TInputImage::PixelType,
00093                                                                   typename TOutputImage::PixelType > > Superclass;
00094   typedef SmartPointer< Self >
00095   Pointer;
00096   typedef SmartPointer< const Self >
00097   ConstPointer;
00098 
00100   itkTypeMacro(MatrixIndexSelectionImageFilter, UnaryFunctorImageFilter);
00101 
00103   itkNewMacro(Self);
00104 
00106   void SetIndices(unsigned int i, unsigned int j)
00107   {
00108     this->GetFunctor().SetIndices(i, j);
00109     this->Modified();
00110   }
00112 
00113   void GetIndices(unsigned int & i, unsigned int & j) const
00114   { return this->GetFunctor().GetIndices(i, j); }
00115 
00116 #ifdef ITK_USE_CONCEPT_CHECKING
00117 
00118   itkConceptMacro( InputHasNumericTraitsCheck,
00119                    ( Concept::HasNumericTraits< typename TInputImage::PixelType::ValueType > ) );
00120 
00122 #endif
00123 protected:
00124   MatrixIndexSelectionImageFilter() {}
00125   virtual ~MatrixIndexSelectionImageFilter() {}
00126 private:
00127   MatrixIndexSelectionImageFilter(const Self &); //purposely not implemented
00128   void operator=(const Self &);                  //purposely not implemented
00129 };
00130 } // end namespace itk
00132 
00133 #endif
00134