ITK  4.4.0
Insight Segmentation and Registration Toolkit
itkExtrapolateImageFunction.h
Go to the documentation of this file.
1 /*=========================================================================
2  *
3  * Copyright Insight Software Consortium
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  * http://www.apache.org/licenses/LICENSE-2.0.txt
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  *=========================================================================*/
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