itkVectorImageToImageAdaptor.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkVectorImageToImageAdaptor.h,v $
  Language:  C++
  Date:      $Date: 2008-08-04 15:56:22 $
  Version:   $Revision: 1.9 $

  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 __itkVectorImageToImageAdaptor_h
#define __itkVectorImageToImageAdaptor_h

#include "itkImageAdaptor.h"
#include "itkVectorImage.h"

namespace itk
{
namespace Accessor
{

template <class TType >
class ITK_EXPORT VectorImageToImagePixelAccessor  
{
public:

  typedef unsigned int VectorLengthType;
  
  typedef  TType                 ExternalType;

  typedef VariableLengthVector< TType >         InternalType;

  typedef TType                  PixelType;

  inline void Set(InternalType output, const ExternalType & input) const
    { 
    output[m_ComponentIdx] = input;
    }

  inline ExternalType Get( const InternalType & input ) const
    {
    ExternalType output;
    output = input[m_ComponentIdx];
    return output;
    }

  void SetExtractComponentIdx( VectorLengthType idx )
    {
    m_ComponentIdx = idx;
    }
  VectorLengthType GetExtractComponentIdx() const
    {
    return m_ComponentIdx;
    }
  
  VectorImageToImagePixelAccessor() : m_ComponentIdx( 0 ) {};
  virtual ~VectorImageToImagePixelAccessor() {};
  
private:
  VectorLengthType m_ComponentIdx;
};

} // end namespace Accessor



template<class TPixelType, unsigned int Dimension>
class ITK_EXPORT VectorImageToImageAdaptor : public
      ImageAdaptor< VectorImage< TPixelType, Dimension >,
        Accessor::VectorImageToImagePixelAccessor< TPixelType > >
{
public:
  typedef VectorImageToImageAdaptor    Self;
  typedef VectorImage< TPixelType, Dimension > VectorImageType;
  typedef ImageAdaptor< VectorImageType,
      Accessor::VectorImageToImagePixelAccessor< TPixelType >  > Superclass;
  typedef SmartPointer<Self>  Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

  itkNewMacro(Self);  

  itkTypeMacro( VectorImageToImageAdaptor, ImageAdaptor );

  typedef typename Superclass::PixelContainer        PixelContainer;
  typedef typename Superclass::PixelContainerPointer PixelContainerPointer;
  typedef typename Superclass::PixelContainerConstPointer PixelContainerConstPointer;
  typedef typename Superclass::IOPixelType                IOPixelType;

  typedef typename VectorImageType::VectorLengthType      VectorLengthType;

  // Set/GetMethods to set the component to be extracted.
  void SetExtractComponentIndex( VectorLengthType componentIdx )
    {
    this->GetPixelAccessor().SetExtractComponentIdx( componentIdx );
    }

  // Set/GetMethods to set the component to be extracted.
  VectorLengthType GetExtractComponentIndex() const
    {
    return this->GetPixelAccessor().GetExtractComponentIdx();
    }
  
 protected:
  VectorImageToImageAdaptor() {}
  virtual ~VectorImageToImageAdaptor() {}
  
 private:
  VectorImageToImageAdaptor(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented

};

  
} // end namespace itk
  
#endif