itkExtractImageFilter.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkExtractImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2002/09/11 19:39:01 $
  Version:   $Revision: 1.7 $

  Copyright (c) 2002 Insight 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 __itkExtractImageFilter_h
#define __itkExtractImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkSmartPointer.h"
#include "itkExtractImageFilterRegionCopier.h"

namespace itk
{

template <class TInputImage, class TOutputImage>
class ITK_EXPORT ExtractImageFilter:
    public ImageToImageFilter<TInputImage,TOutputImage>
{
public:
  typedef ExtractImageFilter         Self;
  typedef ImageToImageFilter<TInputImage,TOutputImage>  Superclass;
  typedef SmartPointer<Self>  Pointer;
  typedef SmartPointer<const Self>  ConstPointer;

  itkNewMacro(Self);  

  itkTypeMacro(ExtractImageFilter, ImageToImageFilter);

  typedef typename TOutputImage::RegionType OutputImageRegionType;
  typedef typename TInputImage::RegionType InputImageRegionType;

  typedef typename TOutputImage::PixelType OutputImagePixelType;
  typedef typename TInputImage::PixelType InputImagePixelType;

  typedef typename TOutputImage::IndexType OutputImageIndexType;
  typedef typename TInputImage::IndexType InputImageIndexType;
  typedef typename TOutputImage::SizeType OutputImageSizeType;
  typedef typename TInputImage::SizeType InputImageSizeType;

  itkStaticConstMacro(InputImageDimension, unsigned int,
                      TInputImage::ImageDimension);
  itkStaticConstMacro(OutputImageDimension, unsigned int,
                      TOutputImage::ImageDimension);

  typedef 
    ImageToImageFilterDetail::ExtractImageFilterRegionCopier<itkGetStaticConstMacro(InputImageDimension), 
                                                             itkGetStaticConstMacro(OutputImageDimension)> ExtractImageFilterRegionCopierType;

  void SetExtractionRegion(InputImageRegionType extractRegion);
  itkGetMacro(ExtractionRegion, InputImageRegionType);


  virtual void GenerateOutputInformation();

  virtual void CallCopyRegion(InputImageRegionType &destRegion,
                              const OutputImageRegionType &srcRegion);
protected:
  ExtractImageFilter();
  ~ExtractImageFilter() {};
  void PrintSelf(std::ostream& os, Indent indent) const;

  void ThreadedGenerateData(const OutputImageRegionType& outputRegionForThread,
                            int threadId );
  InputImageRegionType m_ExtractionRegion;
  OutputImageRegionType m_OutputImageRegion;

private:
  ExtractImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
  
};

  
} // end namespace itk
  
#ifndef ITK_MANUAL_INSTANTIATION
#include "itkExtractImageFilter.txx"
#endif
  
#endif

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