itkImageAdaptor.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkImageAdaptor.h,v $
  Language:  C++
  Date:      $Date: 2008-02-04 12:34:11 $
  Version:   $Revision: 1.69 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even 
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR 
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __itkImageAdaptor_h
#define __itkImageAdaptor_h

#include "itkImage.h"
#include "itkDefaultPixelAccessorFunctor.h"

namespace itk
{

template <class TImage, class TAccessor >
class ITK_EXPORT ImageAdaptor : public ImageBase< ::itk::GetImageDimension<TImage>::ImageDimension>
{
public:

  itkStaticConstMacro(ImageDimension, unsigned int, TImage::ImageDimension);

  typedef ImageAdaptor                                      Self;
  typedef ImageBase<itkGetStaticConstMacro(ImageDimension)> Superclass;
  typedef SmartPointer<Self>                                Pointer;
  typedef SmartPointer<const Self>                          ConstPointer;
  typedef WeakPointer<const Self>                           ConstWeakPointer;

  itkTypeMacro(ImageAdaptor, ImageBase);

  typedef TImage InternalImageType;

  itkNewMacro(Self);  

  typedef typename TAccessor::ExternalType PixelType;

  typedef typename TAccessor::InternalType InternalPixelType;

  typedef PixelType  IOPixelType;

  typedef   TAccessor   AccessorType;

  typedef DefaultPixelAccessorFunctor< Self > AccessorFunctorType;

  typedef typename Superclass::IndexType     IndexType;
  typedef typename IndexType::IndexValueType IndexValueType;

  typedef typename Superclass::SizeType    SizeType;
  typedef typename SizeType::SizeValueType SizeValueType;

  typedef typename Superclass::OffsetType      OffsetType;
  typedef typename OffsetType::OffsetValueType OffsetValueType;

  typedef typename Superclass::RegionType RegionType;

  typedef typename Superclass::SpacingType SpacingType;

  typedef typename Superclass::PointType PointType;

  typedef typename Superclass::DirectionType DirectionType;

  virtual void SetLargestPossibleRegion(const RegionType &region);

  virtual void SetBufferedRegion(const RegionType &region);

  virtual void SetRequestedRegion(const RegionType &region);

  virtual void SetRequestedRegion(DataObject *data);

  virtual const RegionType & GetRequestedRegion() const;

  virtual const RegionType& GetLargestPossibleRegion() const;

  virtual const RegionType& GetBufferedRegion() const;

  inline void Allocate()
    {
    m_Image->Allocate();
    }


  virtual void Initialize();

  void SetPixel(const IndexType &index, const PixelType & value)
    { m_PixelAccessor.Set( m_Image->GetPixel(index), value ); }

  PixelType GetPixel(const IndexType &index) const
    { return m_PixelAccessor.Get( m_Image->GetPixel(index) ); }

  PixelType operator[](const IndexType &index) const
    { return m_PixelAccessor.Get( m_Image->GetPixel(index) ); }

  const OffsetValueType *GetOffsetTable() const;

  IndexType ComputeIndex(OffsetValueType offset) const;

  typedef typename TImage::PixelContainer             PixelContainer;
  typedef typename TImage::PixelContainerPointer      PixelContainerPointer;
  typedef typename TImage::PixelContainerConstPointer PixelContainerConstPointer;

  PixelContainerPointer GetPixelContainer()
    { return m_Image->GetPixelContainer(); }

  const PixelContainer* GetPixelContainer() const
    { return m_Image->GetPixelContainer(); }

  void SetPixelContainer( PixelContainer *container );

  virtual void Graft(const DataObject *data);

  typedef InternalPixelType * InternalPixelPointerType;

  InternalPixelType *GetBufferPointer();
  const InternalPixelType *GetBufferPointer() const;

  virtual void SetSpacing( const SpacingType values );
  virtual void SetSpacing( const double* values /*[ImageDimension]*/ );
  virtual void SetSpacing( const float* values /*[ImageDimension]*/ );

  virtual const SpacingType& GetSpacing() const;

  virtual const PointType& GetOrigin() const;

  virtual void SetOrigin( const PointType values);
  virtual void SetOrigin( const double* values /*[ImageDimension]*/ );
  virtual void SetOrigin( const float* values /*[ImageDimension]*/ );

  virtual void SetDirection( const DirectionType direction );

  virtual const DirectionType& GetDirection() const;

  virtual void SetImage( TImage * );

  virtual void Modified() const;

  virtual unsigned long GetMTime() const;

  AccessorType & GetPixelAccessor( void ) 
    { return m_PixelAccessor; }

  const AccessorType & GetPixelAccessor( void ) const
    { return m_PixelAccessor; }

  void SetPixelAccessor( const AccessorType & accessor ) 
    { m_PixelAccessor = accessor; }

  virtual void Update();
  virtual void CopyInformation(const DataObject *data);

  virtual void UpdateOutputInformation();
  virtual void SetRequestedRegionToLargestPossibleRegion();
  virtual void PropagateRequestedRegion() throw (InvalidRequestedRegionError);
  virtual void UpdateOutputData();
  virtual bool VerifyRequestedRegion();

  template<class TCoordRep>
  bool TransformPhysicalPointToContinuousIndex(
              const Point<TCoordRep,
              itkGetStaticConstMacro(ImageDimension)>& point,
              ContinuousIndex<TCoordRep,
              itkGetStaticConstMacro(ImageDimension)>& index   ) const
    {
    return m_Image->TransformPhysicalPointToContinuousIndex( point, index );
    }

  template<class TCoordRep>
  bool TransformPhysicalPointToIndex(
            const Point<TCoordRep,
            itkGetStaticConstMacro(ImageDimension)>& point,
            IndexType & index                                ) const
    {
    return m_Image->TransformPhysicalPointToIndex( point, index );
    }

  template<class TCoordRep>
  void TransformContinuousIndexToPhysicalPoint(
            const ContinuousIndex<TCoordRep,
            itkGetStaticConstMacro(ImageDimension)>& index,
            Point<TCoordRep,
            itkGetStaticConstMacro(ImageDimension)>& point        ) const
    {
    m_Image->TransformContinuousIndexToPhysicalPoint( index, point );
    }

  template<class TCoordRep>
  void TransformIndexToPhysicalPoint(
                      const IndexType & index,
                      Point<TCoordRep,
                      itkGetStaticConstMacro(ImageDimension)>& point ) const
    {
    m_Image->TransformIndexToPhysicalPoint( index, point );
    }

  template<class TCoordRep>
  void TransformLocalVectorToPhysicalVector(
    const FixedArray< TCoordRep, itkGetStaticConstMacro(ImageDimension) > & inputGradient,
          FixedArray< TCoordRep, itkGetStaticConstMacro(ImageDimension) > & outputGradient ) const
    {
    m_Image->TransformLocalVectorToPhysicalVector( inputGradient, outputGradient );
    }

protected:

  ImageAdaptor();
  virtual ~ImageAdaptor();
  void PrintSelf(std::ostream& os, Indent indent) const;
  
private:

  ImageAdaptor(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
  
  // Adapted image, most of the calls to ImageAdaptor
  // will be delegated to this image
  typename TImage::Pointer   m_Image;

  // Data accessor object, 
  // it converts the presentation of a pixel
  AccessorType               m_PixelAccessor;
  

};
  
} // end namespace itk

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

#endif

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