itkHardConnectedComponentImageFilter.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 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_ASSIGN(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 >;

  itkTypeMacro(HardConnectedComponentImageFilter, ImageToImageFilter);

  itkNewMacro(Self);

  void SetObjectSeed(const IndexType & seed)
  { m_Seeds.push_front(seed); }

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  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 > ) );
  // End concept checking
#endif

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