itkTestingStretchIntensityImageFilter.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 itkTestingStretchIntensityImageFilter_h
  #define itkTestingStretchIntensityImageFilter_h

  #include "itkUnaryFunctorImageFilter.h"

  namespace itk
  {
  namespace Testing
  {

template< typename  TInputImage, typename  TOutputImage = TInputImage >
class ITK_TEMPLATE_EXPORT StretchIntensityImageFilter: public ImageSource< TOutputImage >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(StretchIntensityImageFilter);

  using Self = StretchIntensityImageFilter;
  using Superclass = ImageSource< TOutputImage >;
  using Pointer = SmartPointer< Self >;
  using ConstPointer = SmartPointer< const Self >;

  using OutputPixelType = typename TOutputImage::PixelType;
  using InputPixelType = typename TInputImage::PixelType;
  using RealType = typename NumericTraits< InputPixelType >::RealType;

  itkNewMacro(Self);

  itkTypeMacro(StretchIntensityImageFilter, ImageSource);

  itkSetMacro(OutputMinimum, OutputPixelType);
  itkSetMacro(OutputMaximum, OutputPixelType);
  itkGetConstReferenceMacro(OutputMinimum, OutputPixelType);
  itkGetConstReferenceMacro(OutputMaximum, OutputPixelType);

  itkGetConstReferenceMacro(Scale, RealType);
  itkGetConstReferenceMacro(Shift, RealType);

  itkGetConstReferenceMacro(InputMinimum, InputPixelType);
  itkGetConstReferenceMacro(InputMaximum, InputPixelType);

  using Superclass::SetInput;
  virtual void SetInput(const TInputImage *image);
  const TInputImage * GetInput() const;

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  itkConceptMacro( InputHasNumericTraitsCheck,
                   ( Concept::HasNumericTraits< InputPixelType > ) );
  itkConceptMacro( OutputHasNumericTraitsCheck,
                   ( Concept::HasNumericTraits< OutputPixelType > ) );
  itkConceptMacro( RealTypeMultiplyOperatorCheck,
                   ( Concept::MultiplyOperator< RealType > ) );
  itkConceptMacro( RealTypeAdditiveOperatorsCheck,
                   ( Concept::AdditiveOperators< RealType > ) );
  // End concept checking
#endif

protected:
  StretchIntensityImageFilter();
  ~StretchIntensityImageFilter() override = default;

  void BeforeThreadedGenerateData() override;

  void PrintSelf(std::ostream & os, Indent indent) const override;

  using OutputImageRegionType = typename Superclass::OutputImageRegionType;
  using InputImageRegionType = typename TInputImage::RegionType;

  void DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;

private:
  RealType m_Scale;
  RealType m_Shift;

  InputPixelType m_InputMinimum;
  InputPixelType m_InputMaximum;

  OutputPixelType m_OutputMinimum;
  OutputPixelType m_OutputMaximum;
};
} // end namespace Testing
} // end namespace itk

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

#endif