itkSliceImageFilter.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 itkSliceImageFilter_h
#define itkSliceImageFilter_h

#include "itkImageToImageFilter.h"

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

  itkNewMacro(Self);

  itkTypeMacro(SliceImageFilter, ImageToImageFilter);

  typedef TOutputImage                          OutputImageType;
  typedef TInputImage                           InputImageType;
  typedef typename OutputImageType::Pointer     OutputImagePointer;
  typedef typename InputImageType::Pointer      InputImagePointer;
  typedef typename InputImageType::ConstPointer InputImageConstPointer;

  typedef typename TOutputImage::IndexType  OutputIndexType;
  typedef typename TInputImage::IndexType   InputIndexType;
  typedef typename TOutputImage::OffsetType OutputOffsetType;

  typedef typename TOutputImage::RegionType OutputImageRegionType;

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


  typedef typename InputImageType::IndexType      IndexType;
  typedef typename InputIndexType::IndexValueType IndexValueType;
  typedef FixedArray< int, ImageDimension >       ArrayType;

  itkSetMacro(Start, IndexType);
  itkGetConstReferenceMacro(Start, IndexType);
  void SetStart(IndexValueType start);

  itkSetMacro(Stop, IndexType);
  itkGetConstReferenceMacro(Stop, IndexType);
  void SetStop(IndexValueType stop);

  itkSetMacro(Step, ArrayType);
  itkGetConstReferenceMacro(Step, ArrayType);
  void SetStep( int step);

  virtual void GenerateOutputInformation() ITK_OVERRIDE;

  virtual void GenerateInputRequestedRegion() ITK_OVERRIDE;

#ifdef ITK_USE_CONCEPT_CHECKING

  itkConceptMacro( InputConvertibleToOutputCheck,
                   ( Concept::Convertible< typename TInputImage::PixelType, typename TOutputImage::PixelType > ) );
  itkConceptMacro( SameDimensionCheck,
                   ( Concept::SameDimension< ImageDimension, OutputImageDimension > ) );
#endif

protected:
  SliceImageFilter();
  // ~SliceImageFilter() {} default ok
  void PrintSelf(std::ostream & os, Indent indent) const ITK_OVERRIDE;

  void ThreadedGenerateData(const OutputImageRegionType & outputRegionForThread,
                            ThreadIdType threadId) ITK_OVERRIDE;

  void VerifyInputInformation() ITK_OVERRIDE;

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

  IndexType m_Start;
  IndexType m_Stop;
  ArrayType m_Step;
};
} // end namespace itk

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

#endif