ITK  4.2.0
Insight Segmentation and Registration Toolkit
itkInterpolateImageFunction.h
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18 #ifndef __itkInterpolateImageFunction_h
19 #define __itkInterpolateImageFunction_h
20 
21 #include "itkImageFunction.h"
22 
23 namespace itk
24 {
43 template< class TInputImage, class TCoordRep = double >
44 class ITK_EXPORT InterpolateImageFunction:
45  public ImageFunction< TInputImage,
46  typename NumericTraits< typename TInputImage::PixelType >::RealType, TCoordRep >
47 {
48 public:
51  typedef ImageFunction< TInputImage,
53  TCoordRep > Superclass;
54 
57 
60 
62  typedef typename Superclass::OutputType OutputType;
63 
65  typedef typename Superclass::InputImageType InputImageType;
66 
68  itkStaticConstMacro(ImageDimension, unsigned int,
69  Superclass::ImageDimension);
70 
72  typedef typename Superclass::PointType PointType;
73 
75  typedef typename Superclass::IndexType IndexType;
77 
79  typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
80 
83 
92  virtual OutputType Evaluate(const PointType & point) const
93  {
94  ContinuousIndexType index;
95 
96  this->GetInputImage()->TransformPhysicalPointToContinuousIndex(point, index);
97  return ( this->EvaluateAtContinuousIndex(index) );
98  }
99 
110  virtual OutputType EvaluateAtContinuousIndex(
111  const ContinuousIndexType & index) const = 0;
112 
121  virtual OutputType EvaluateAtIndex(const IndexType & index) const
122  {
123  return ( static_cast< RealType >( this->GetInputImage()->GetPixel(index) ) );
124  }
125 
126 protected:
129  void PrintSelf(std::ostream & os, Indent indent) const
130  { Superclass::PrintSelf(os, indent); }
131 private:
132  InterpolateImageFunction(const Self &); //purposely not implemented
133  void operator=(const Self &); //purposely not implemented
134 };
135 } // end namespace itk
136 
137 #endif
138