ITK  4.3.0
Insight Segmentation and Registration Toolkit
itkExtrapolateImageFunction.h
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18 #ifndef __itkExtrapolateImageFunction_h
19 #define __itkExtrapolateImageFunction_h
20 
21 #include "itkImageFunction.h"
22 
23 namespace itk
24 {
42 template< class TInputImage, class TCoordRep = float >
43 class ITK_EXPORT ExtrapolateImageFunction:
44  public ImageFunction< TInputImage,
45  typename NumericTraits< typename TInputImage::PixelType >::RealType, TCoordRep >
46 {
47 public:
50  typedef ImageFunction< TInputImage,
52  TCoordRep > Superclass;
55 
58 
60  typedef typename Superclass::OutputType OutputType;
61 
63  typedef typename Superclass::InputImageType InputImageType;
64 
66  itkStaticConstMacro(ImageDimension, unsigned int,
67  Superclass::ImageDimension);
68 
70  typedef typename Superclass::PointType PointType;
71 
73  typedef typename Superclass::IndexType IndexType;
74 
76  typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
77 
80 
86  virtual OutputType Evaluate(const PointType & point) const
87  {
88  ContinuousIndexType index;
89 
90  this->GetInputImage()->TransformPhysicalPointToContinuousIndex(point, index);
91  return ( this->EvaluateAtContinuousIndex(index) );
92  }
93 
99  virtual OutputType EvaluateAtContinuousIndex(
100  const ContinuousIndexType & index) const = 0;
101 
107  virtual OutputType EvaluateAtIndex(
108  const IndexType & index) const = 0;
109 
110 protected:
113  void PrintSelf(std::ostream & os, Indent indent) const
114  { Superclass::PrintSelf(os, indent); }
115 
116 private:
117  ExtrapolateImageFunction(const Self &); //purposely not implemented
118  void operator=(const Self &); //purposely not implemented
119 };
120 } // end namespace itk
121 
122 #endif
123