itkRegionOfInterestImageFilter.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *         http://www.apache.org/licenses/LICENSE-2.0.txt
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 *=========================================================================*/
#ifndef __itkRegionOfInterestImageFilter_h
#define __itkRegionOfInterestImageFilter_h

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

namespace itk
{
template< typename TInputImage, typename TOutputImage >
class RegionOfInterestImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  typedef RegionOfInterestImageFilter                     Self;
  typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer< const Self >                      ConstPointer;
  typedef typename Superclass::InputImageRegionType       InputImageRegionType;

  itkNewMacro(Self);

  itkTypeMacro(RegionOfInterestImageFilter, ImageToImageFilter);

  typedef typename TInputImage::RegionType RegionType;
  typedef typename TInputImage::IndexType  IndexType;
  typedef typename TInputImage::SizeType   SizeType;

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

  itkSetMacro(RegionOfInterest, RegionType);
  itkGetConstMacro(RegionOfInterest, RegionType);

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

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  itkConceptMacro( SameDimensionCheck,
                   ( Concept::SameDimension< ImageDimension, OutputImageDimension > ) );
  itkConceptMacro( InputConvertibleToOutputCheck,
                   ( Concept::Convertible< InputImagePixelType, OutputImagePixelType > ) );
  // End concept checking
#endif

protected:
  RegionOfInterestImageFilter();
  ~RegionOfInterestImageFilter() {}
  void PrintSelf(std::ostream & os, Indent indent) const;

  virtual void GenerateInputRequestedRegion();

  virtual void EnlargeOutputRequestedRegion(DataObject *output);

  virtual void GenerateOutputInformation();

  void ThreadedGenerateData(const RegionType & outputRegionForThread,
                            ThreadIdType threadId);

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

  RegionType m_RegionOfInterest;
};
} // end namespace itk

#ifndef ITK_MANUAL_INSTANTIATION
#include "itkRegionOfInterestImageFilter.hxx"
#endif

#endif