itkHardConnectedComponentImageFilter.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 itkHardConnectedComponentImageFilter_h
#define itkHardConnectedComponentImageFilter_h
 
#include "itkImageToImageFilter.h"
#include "itkImage.h"
 
namespace itk
{
template <typename TInputImage, typename TOutputImage>
class ITK_TEMPLATE_EXPORT HardConnectedComponentImageFilter : public ImageToImageFilter<TInputImage, TOutputImage>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(HardConnectedComponentImageFilter);

  using Self = HardConnectedComponentImageFilter;
  using Superclass = ImageToImageFilter<TInputImage, TOutputImage>;
  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;

  using OutputPixelType = typename TOutputImage::PixelType;
  using OutputInternalPixelType = typename TOutputImage::InternalPixelType;
  using InputPixelType = typename TInputImage::PixelType;
  using InputInternalPixelType = typename TInputImage::InternalPixelType;
  static constexpr unsigned int InputImageDimension = TInputImage::ImageDimension;
  static constexpr unsigned int ImageDimension = TOutputImage::ImageDimension;

  using InputImageType = TInputImage;
  using OutputImageType = TOutputImage;
  using IndexType = typename TInputImage::IndexType;
  using SizeType = typename TInputImage::SizeType;
  using RegionType = typename TOutputImage::RegionType;
  using ListType = std::list<IndexType>;

  itkOverrideGetNameOfClassMacro(HardConnectedComponentImageFilter);

  itkNewMacro(Self);

  void
  SetObjectSeed(const IndexType & seed)
  {
    m_Seeds.push_front(seed);
  }
 
  itkConceptMacro(SameDimensionCheck, (Concept::SameDimension<InputImageDimension, ImageDimension>));
  itkConceptMacro(IntConvertibleToOutputCheck, (Concept::Convertible<int, OutputPixelType>));
  itkConceptMacro(UnsignedShortConvertibleToOutputCheck, (Concept::Convertible<unsigned short, OutputPixelType>));
  itkConceptMacro(OutputEqualityComparableCheck, (Concept::EqualityComparable<OutputPixelType>));
  itkConceptMacro(UnsignedCharConvertibleToOutputCheck, (Concept::Convertible<unsigned char, OutputPixelType>));
  itkConceptMacro(OutputIncrementDecrementOperatorsCheck, (Concept::IncrementDecrementOperators<OutputPixelType>));
 
protected:
  HardConnectedComponentImageFilter() = default;
  ~HardConnectedComponentImageFilter() override = default;

  void
  GenerateData() override;
 
  void
  PrintSelf(std::ostream & os, Indent indent) const override
  {
    Superclass::PrintSelf(os, indent);
  }
 
private:
  ListType m_Seeds{};
};
} // end namespace itk
 
#ifndef ITK_MANUAL_INSTANTIATION
#  include "itkHardConnectedComponentImageFilter.hxx"
#endif
 
#endif