itkDanielssonDistanceMapImageFilter.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 itkDanielssonDistanceMapImageFilter_h
#define itkDanielssonDistanceMapImageFilter_h

#include "itkImageToImageFilter.h"
#include "itkImageRegionIteratorWithIndex.h"

namespace itk
{
template< typename TInputImage,
  typename TOutputImage,
  typename TVoronoiImage = TInputImage >
class ITK_TEMPLATE_EXPORT DanielssonDistanceMapImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(DanielssonDistanceMapImageFilter);

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

  using DataObjectPointer = DataObject::Pointer;

  itkNewMacro(Self);

  itkTypeMacro(DanielssonDistanceMapImageFilter, ImageToImageFilter);

  using InputImageType = TInputImage;

  using InputPixelType = typename InputImageType::PixelType;

  using RegionType = typename InputImageType::RegionType;

  using IndexType = typename RegionType::IndexType;

  using OffsetType = typename InputImageType::OffsetType;

  using SpacingType = typename InputImageType::SpacingType;
  using SpacingValueType = typename InputImageType::SpacingValueType;

  using SizeType = typename RegionType::SizeType;

  using SizeValueType = typename SizeType::SizeValueType;

  using OutputImageType = TOutputImage;

  using OutputPixelType = typename OutputImageType::PixelType;

  using VoronoiImageType = TVoronoiImage;
  using VoronoiImagePointer = typename VoronoiImageType::Pointer;
  using VoronoiPixelType = typename VoronoiImageType::PixelType;

  static constexpr unsigned int InputImageDimension = InputImageType::ImageDimension;

  using VectorImageType = Image< OffsetType,
                 Self::InputImageDimension >;

  using InputImagePointer = typename InputImageType::ConstPointer;

  using OutputImagePointer = typename OutputImageType::Pointer;

  using VectorImagePointer = typename VectorImageType::Pointer;

  itkSetMacro(SquaredDistance, bool);

  itkGetConstReferenceMacro(SquaredDistance, bool);

  itkBooleanMacro(SquaredDistance);

  itkSetMacro(InputIsBinary, bool);

  itkGetConstReferenceMacro(InputIsBinary, bool);

  itkBooleanMacro(InputIsBinary);

  itkSetMacro(UseImageSpacing, bool);

  itkGetConstReferenceMacro(UseImageSpacing, bool);

  itkBooleanMacro(UseImageSpacing);

  VoronoiImageType * GetVoronoiMap();

  OutputImageType * GetDistanceMap();

  VectorImageType * GetVectorDistanceMap();

  using DataObjectPointerArraySizeType = ProcessObject::DataObjectPointerArraySizeType;
  using Superclass::MakeOutput;
  DataObjectPointer MakeOutput( DataObjectPointerArraySizeType idx ) override;

#ifdef ITK_USE_CONCEPT_CHECKING
  static constexpr unsigned int OutputImageDimension = TOutputImage::ImageDimension;
  static constexpr unsigned int VoronoiImageDimension = TVoronoiImage::ImageDimension;

  // Begin concept checking
  itkConceptMacro( InputOutputSameDimensionCheck,
                   ( Concept::SameDimension< InputImageDimension, OutputImageDimension > ) );
  itkConceptMacro( InputVoronoiSameDimensionCheck,
                   ( Concept::SameDimension< InputImageDimension, VoronoiImageDimension > ) );
  itkConceptMacro( DoubleConvertibleToOutputCheck,
                   ( Concept::Convertible< double, OutputPixelType > ) );
  itkConceptMacro( InputConvertibleToOutputCheck,
                   ( Concept::Convertible< InputPixelType,
                                           OutputPixelType > ) );
  // End concept checking
#endif

protected:
  DanielssonDistanceMapImageFilter();
  ~DanielssonDistanceMapImageFilter() override = default;
  void PrintSelf(std::ostream & os, Indent indent) const override;

  void GenerateData() override;

  void PrepareData();

  void ComputeVoronoiMap();

  void UpdateLocalDistance(VectorImageType *,
                           const IndexType &,
                           const OffsetType &);

private:
  bool m_SquaredDistance;
  bool m_InputIsBinary;
  bool m_UseImageSpacing;

  SpacingType m_InputSpacingCache;

}; // end of DanielssonDistanceMapImageFilter class
} //end namespace itk

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

#endif