itkTransformDeformationFieldFilter.h

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#ifndef itkTransformDeformationFieldFilter_h
#define itkTransformDeformationFieldFilter_h

#include <itkObject.h>
#include <itkImageToImageFilter.h>
#include <itkImage.h>
#include <itkImageRegionIteratorWithIndex.h>
#include <itkImageRegionConstIteratorWithIndex.h>
#include <itkTransform.h>

namespace itk
{
template <class TInput, class TOutput, int NDimensions>
class TransformDeformationFieldFilter
  : public ImageToImageFilter
  <Image<itk::Vector<TInput, NDimensions>, NDimensions>,
   Image<itk::Vector<TOutput, NDimensions>, NDimensions> >
{
public:
  typedef TInput  InputDataType;
  typedef TOutput OutputDataType;

  typedef ImageToImageFilter
  <Image<itk::Vector<InputDataType, NDimensions>, NDimensions>,
   Image<itk::Vector<OutputDataType, NDimensions>, NDimensions> >
  Superclass;

  typedef itk::Vector<InputDataType, NDimensions>        InputDeformationPixelType;
  typedef Image<InputDeformationPixelType, NDimensions>  InputDeformationFieldType;
  typedef itk::Vector<OutputDataType, NDimensions>       OutputDeformationPixelType;
  typedef Image<OutputDeformationPixelType, NDimensions> OutputDeformationFieldType;
  typedef TransformDeformationFieldFilter                Self;
  typedef SmartPointer<Self>                             Pointer;
  typedef SmartPointer<const Self>                       ConstPointer;

  typedef typename InputDeformationFieldType::Pointer                  InputDeformationFieldPointerType;
  typedef typename OutputDeformationFieldType::Pointer                 OutputDeformationFieldPointerType;
  typedef ImageRegionConstIteratorWithIndex<InputDeformationFieldType> InputIteratorType;
  typedef ImageRegionIteratorWithIndex<OutputDeformationFieldType>     OutputIteratorType;
  typedef typename OutputDeformationFieldType::RegionType              OutputDeformationFieldRegionType;
  typedef Transform<OutputDataType, NDimensions, NDimensions>          TransformType;
  typedef typename OutputDeformationFieldType::RegionType              OutputImageRegionType;

  itkTypeMacro(TransformDeformationFieldFilter, ImageToImageFilter);

  itkNewMacro( Self );
// /Set the transform
  itkSetObjectMacro( Transform, TransformType );

// /Get the time of the last modification of the object
  ModifiedTimeType GetMTime() const override;

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro( InputConvertibleToDoubleCheck,
                   ( Concept::Convertible<InputDataType, double> ) );
  itkConceptMacro( DoubleConvertibleToOutputCheck,
                   ( Concept::Convertible<double, OutputDataType> ) );
#endif
protected:
  TransformDeformationFieldFilter();

  void DynamicThreadedGenerateData( const OutputImageRegionType & outputRegionForThread) override;

  void BeforeThreadedGenerateData() override;

  void GenerateOutputInformation() override;

  void GenerateInputRequestedRegion() override;

private:
  typename TransformType::Pointer m_Transform;
// InputDeformationFieldPointerType m_Input ;
};

} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkTransformDeformationFieldFilter.txx"
#endif

#endif