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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: 2009-10-29 11:18:44 $
00007   Version:   $Revision: 1.25 $
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   typedef typename Superclass::IndexValueType IndexValueType;
00095 
00097   typedef typename Superclass::ContinuousIndexType ContinuousIndexType;
00098 
00100   typedef typename Superclass::OutputType OutputType;
00101 
00103   typedef TCoordRep CoordRepType;
00104 
00110   virtual OutputType Evaluate( const PointType& point ) const
00111     {
00112     ContinuousIndexType index;
00113     this->GetInputImage()->TransformPhysicalPointToContinuousIndex( point, index );
00114     return ( this->EvaluateAtContinuousIndex( index ) );
00115     }
00117 
00128   virtual OutputType EvaluateAtContinuousIndex( 
00129     const ContinuousIndexType & index ) const = 0;
00130 
00138   virtual OutputType EvaluateAtIndex( const IndexType & index ) const
00139     {
00140     OutputType output;
00141     PixelType input = this->GetInputImage()->GetPixel( index );
00142     for( unsigned int k = 0; k < Dimension; k++ )
00143       {
00144       output[k] = static_cast<double>( input[k] );
00145       }
00146     return ( output );
00147     }
00149 
00150 protected:
00151   VectorInterpolateImageFunction() {}
00152   ~VectorInterpolateImageFunction() {}
00153   void PrintSelf(std::ostream& os, Indent indent) const
00154     { Superclass::PrintSelf( os, indent ); }
00155 
00156 private:
00157   VectorInterpolateImageFunction(const Self&); //purposely not implemented
00158   void operator=(const Self&); //purposely not implemented
00159 
00160 };
00161 
00162 } // end namespace itk
00163 
00164 #endif
00165 

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