itkExpandImageFilter.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 itkExpandImageFilter_h
#define itkExpandImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkLinearInterpolateImageFunction.h"

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

  itkNewMacro(Self);

  itkTypeMacro(ExpandImageFilter, ImageToImageFilter);

  typedef typename TOutputImage::RegionType OutputImageRegionType;

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

  typedef typename Superclass::InputImageType  InputImageType;
  typedef typename Superclass::OutputImageType OutputImageType;
  typedef typename OutputImageType::PixelType  OutputPixelType;
  typedef typename InputImageType::Pointer     InputImagePointer;
  typedef typename OutputImageType::Pointer    OutputImagePointer;

  typedef double                                                   CoordRepType;
  typedef InterpolateImageFunction< InputImageType, CoordRepType > InterpolatorType;
  typedef typename InterpolatorType::Pointer                       InterpolatorPointer;
  typedef LinearInterpolateImageFunction< InputImageType, CoordRepType >
  DefaultInterpolatorType;

  itkSetObjectMacro(Interpolator, InterpolatorType);
  itkGetModifiableObjectMacro(Interpolator, InterpolatorType);

  typedef FixedArray< unsigned int, ImageDimension > ExpandFactorsType;

  itkSetMacro(ExpandFactors, ExpandFactorsType);
  virtual void SetExpandFactors(const unsigned int factor);

  itkGetConstReferenceMacro(ExpandFactors, ExpandFactorsType);


  virtual void GenerateOutputInformation() ITK_OVERRIDE;

  virtual void GenerateInputRequestedRegion() ITK_OVERRIDE;

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  itkConceptMacro( InputHasNumericTraitsCheck,
                   ( Concept::HasNumericTraits< typename TInputImage::PixelType > ) );
  itkConceptMacro( OutputHasNumericTraitsCheck,
                   ( Concept::HasNumericTraits< OutputPixelType > ) );
  // End concept checking
#endif

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

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

  virtual void BeforeThreadedGenerateData() ITK_OVERRIDE;

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

  ExpandFactorsType   m_ExpandFactors;
  InterpolatorPointer m_Interpolator;
};
} // end namespace itk

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

#endif