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itkVectorInterpolateImageFunction.h

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00001 /*=========================================================================
00002 
00003   Program:   Insight Segmentation & Registration Toolkit
00004   Module:    $RCSfile: itkVectorInterpolateImageFunction.h,v $
00005   Language:  C++
00006   Date:      $Date: 2008-05-14 09:26:05 $
00007   Version:   $Revision: 1.23 $
00008 
00009   Copyright (c) Insight Software Consortium. All rights reserved.
00010   See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.
00011 
00012      This software is distributed WITHOUT ANY WARRANTY; without even 
00013      the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
00014      PURPOSE.  See the above copyright notices for more information.
00015 
00016 =========================================================================*/
00017 #ifndef __itkVectorInterpolateImageFunction_h
00018 #define __itkVectorInterpolateImageFunction_h
00019 
00020 #include "itkImageFunction.h"
00021 #include "itkFixedArray.h"
00022 
00023 namespace itk
00024 {
00025 
00032 template <typename T>
00033 struct GetDimension
00034 {
00035   itkStaticConstMacro(Dimension, int, T::Dimension);
00036 }; 
00037 
00038   
00056 template <class TInputImage, class TCoordRep = double>
00057 class ITK_EXPORT VectorInterpolateImageFunction :
00058   public ImageFunction<
00059     TInputImage,
00060     ITK_TYPENAME NumericTraits<typename TInputImage::PixelType>::RealType,
00061     TCoordRep >
00062 {
00063 public:
00065   itkStaticConstMacro(Dimension, unsigned int,
00066                       TInputImage::PixelType::Dimension);
00067 
00069   itkStaticConstMacro(ImageDimension, unsigned int,
00070                       TInputImage::ImageDimension);
00071 
00073   typedef VectorInterpolateImageFunction Self;
00074   typedef ImageFunction<TInputImage,
00075     ITK_TYPENAME NumericTraits<typename TInputImage::PixelType>::RealType,
00076     TCoordRep > Superclass;
00077   typedef SmartPointer<Self> Pointer;
00078   typedef SmartPointer<const Self>  ConstPointer;
00079 
00081   itkTypeMacro(VectorInterpolateImageFunction, ImageFunction);
00082 
00084   typedef typename Superclass::InputImageType InputImageType;
00085   typedef typename InputImageType::PixelType  PixelType;
00086   typedef typename PixelType::ValueType       ValueType;
00087   typedef typename NumericTraits<ValueType>::RealType  RealType;
00088 
00090   typedef typename Superclass::PointType PointType;
00091 
00093   typedef typename Superclass::IndexType IndexType;
00094 
00096   typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
00097 
00099   typedef typename Superclass::OutputType OutputType;
00100 
00102   typedef TCoordRep CoordRepType;
00103 
00109   virtual OutputType Evaluate( const PointType& point ) const
00110     {
00111     ContinuousIndexType index;
00112     this->GetInputImage()->TransformPhysicalPointToContinuousIndex( point, index );
00113     return ( this->EvaluateAtContinuousIndex( index ) );
00114     }
00116 
00127   virtual OutputType EvaluateAtContinuousIndex( 
00128     const ContinuousIndexType & index ) const = 0;
00129 
00137   virtual OutputType EvaluateAtIndex( const IndexType & index ) const
00138     {
00139     OutputType output;
00140     PixelType input = this->GetInputImage()->GetPixel( index );
00141     for( unsigned int k = 0; k < Dimension; k++ )
00142       {
00143       output[k] = static_cast<double>( input[k] );
00144       }
00145     return ( output );
00146     }
00148 
00149 protected:
00150   VectorInterpolateImageFunction() {}
00151   ~VectorInterpolateImageFunction() {}
00152   void PrintSelf(std::ostream& os, Indent indent) const
00153     { Superclass::PrintSelf( os, indent ); }
00154 
00155 private:
00156   VectorInterpolateImageFunction(const Self&); //purposely not implemented
00157   void operator=(const Self&); //purposely not implemented
00158 
00159 };
00160 
00161 } // end namespace itk
00162 
00163 #endif
00164 
00165 
00166 

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