itkTestingStretchIntensityImageFilter.h

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/*=========================================================================
 *
 *  Copyright NumFOCUS
 *
 *  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
 *
 *         https://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_MOVE(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);

  itkOverrideGetNameOfClassMacro(StretchIntensityImageFilter);
 
  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 * input);
  const TInputImage *
  GetInput() const;
 
  itkConceptMacro(InputHasNumericTraitsCheck, (Concept::HasNumericTraits<InputPixelType>));
  itkConceptMacro(OutputHasNumericTraitsCheck, (Concept::HasNumericTraits<OutputPixelType>));
  itkConceptMacro(RealTypeMultiplyOperatorCheck, (Concept::MultiplyOperator<RealType>));
  itkConceptMacro(RealTypeAdditiveOperatorsCheck, (Concept::AdditiveOperators<RealType>));
 
protected:
  StretchIntensityImageFilter();
  ~StretchIntensityImageFilter() override = default;

  void
  BeforeThreadedGenerateData() override;

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