itkLabelSetMorphBaseImageFilter.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 itkLabelSetMorphBaseImageFilter_h
#define itkLabelSetMorphBaseImageFilter_h

#include "itkNumericTraits.h"
#include "itkImageToImageFilter.h"

namespace itk
{
#if     ITK_VERSION_MAJOR < 4
using ThreadIdType = int;
using RegionIndexType = int;
#else
using RegionIndexType = unsigned int;
#endif

template< typename TInputImage, bool doDilate,
          typename TOutputImage = TInputImage >
class ITK_EXPORT LabelSetMorphBaseImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  ITK_DISALLOW_COPY_AND_ASSIGN(LabelSetMorphBaseImageFilter);

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

  itkNewMacro(Self);

  itkTypeMacro(LabelSetMorphBaseImageFilter, ImageToImageFilter);

  using InputImageType = TInputImage;
  using OutputImageType = TOutputImage;
  using PixelType = typename TInputImage::PixelType;
  using RealType = typename NumericTraits< PixelType >::FloatType;
  using OutputPixelType = typename TOutputImage::PixelType;
  using ScalarRealType = typename NumericTraits< PixelType >::ScalarRealType;

  using OutputIndexType = typename OutputImageType::IndexType;
  using OutputIndexValueType = typename OutputImageType::IndexValueType;

  using InputImagePointer = typename TInputImage::Pointer;
  using InputImageConstPointer = typename TInputImage::ConstPointer;
  using InputSizeType = typename TInputImage::SizeType;
  using OutputSizeType = typename TOutputImage::SizeType;

  using RadiusType = typename itk::FixedArray< ScalarRealType, TInputImage::ImageDimension >;

  using OutputImageRegionType = typename OutputImageType::RegionType;

  // set all of the scales the same
  void SetRadius(ScalarRealType scale);

  itkSetMacro(Radius, RadiusType);
  itkGetConstReferenceMacro(Radius, RadiusType);

  itkSetMacro(UseImageSpacing, bool);
  itkGetConstReferenceMacro(UseImageSpacing, bool);
  itkBooleanMacro(UseImageSpacing);

  static constexpr unsigned int ImageDimension = TInputImage::ImageDimension;
  static constexpr unsigned int OutputImageDimension = TOutputImage::ImageDimension;
  static constexpr unsigned int InputImageDimension = TInputImage::ImageDimension;

  void writeDist(std::string fname);

protected:
  LabelSetMorphBaseImageFilter();
  ~LabelSetMorphBaseImageFilter() override {}

  RegionIndexType SplitRequestedRegion(RegionIndexType i, RegionIndexType num,
                                       OutputImageRegionType & splitRegion) override;

  void DynamicThreadedGenerateData(const OutputImageRegionType & outputRegionForThread) override;

  void GenerateData(void) override;

  // Override since the filter produces the entire dataset.
  void EnlargeOutputRequestedRegion(DataObject *output) override;

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

  RadiusType m_Radius;
  RadiusType m_Scale;
  using DistanceImageType = typename itk::Image< RealType, TInputImage::ImageDimension >;
  RealType m_Extreme;

  typename DistanceImageType::Pointer m_DistanceImage;

  int  m_MagnitudeSign;
  int  m_CurrentDimension;
  bool m_FirstPassDone;

  // this is the first non-zero entry in the radius. Needed to
  // support elliptical operations
  RealType m_BaseSigma;
};
} // end namespace itk

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

#endif