itkSignedMaurerDistanceMapImageFilter.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 __itkSignedMaurerDistanceMapImageFilter_h
#define __itkSignedMaurerDistanceMapImageFilter_h

#include "itkImageToImageFilter.h"

namespace itk
{
template< class TInputImage, class TOutputImage >
class ITK_EXPORT SignedMaurerDistanceMapImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:

  itkStaticConstMacro(InputImageDimension, unsigned int,
                      TInputImage::ImageDimension);
  itkStaticConstMacro(OutputImageDimension, unsigned int,
                      TOutputImage::ImageDimension);
  itkStaticConstMacro(ImageDimension, unsigned int,
                      TOutputImage::ImageDimension);

  typedef TInputImage                           InputImageType;
  typedef typename InputImageType::ConstPointer InputImageConstPointer;

  typedef TOutputImage                          OutputImageType;
  typedef typename OutputImageType::Pointer     OutputImagePointer;

  typedef SignedMaurerDistanceMapImageFilter  Self;
  typedef ImageToImageFilter<
    InputImageType,
    OutputImageType >                         Superclass;

  typedef SmartPointer< Self >                Pointer;
  typedef SmartPointer< const Self >          ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(SignedMaurerDistanceMapImageFilter,
               ImageToImageFilter);

  typedef typename InputImageType::RegionType   InputRegionType;
  typedef typename OutputImageType::RegionType  OutputRegionType;

  typedef typename InputImageType::PixelType  InputPixelType;
  typedef typename OutputImageType::PixelType OutputPixelType;

  typedef typename InputImageType::SizeType       InputSizeType;
  typedef typename InputImageType::SizeValueType  InputSizeValueType;
  typedef typename OutputImageType::SizeType      OutputSizeType;
  typedef typename OutputImageType::SizeValueType OutputSizeValueType;

  typedef typename InputImageType::IndexType        InputIndexType;
  typedef typename InputImageType::IndexValueType   InputIndexValueType;
  typedef typename OutputImageType::IndexType       OutputIndexType;
  typedef typename OutputImageType::IndexValueType  OutputIndexValueType;

  typedef typename InputImageType::SpacingType  InputSpacingType;
  typedef typename OutputImageType::SpacingType OutputSpacingType;
  typedef typename OutputImageType::RegionType  OutputImageRegionType;

  itkSetMacro(SquaredDistance, bool);

  itkGetConstReferenceMacro(SquaredDistance, bool);

  itkBooleanMacro(SquaredDistance);

  itkSetMacro(InsideIsPositive, bool);

  itkGetConstReferenceMacro(InsideIsPositive, bool);

  itkBooleanMacro(InsideIsPositive);

  itkSetMacro(UseImageSpacing, bool);

  itkGetConstReferenceMacro(UseImageSpacing, bool);

  itkBooleanMacro(UseImageSpacing);

  itkSetMacro(BackgroundValue, InputPixelType);
  itkGetConstReferenceMacro(BackgroundValue, InputPixelType);

protected:

  SignedMaurerDistanceMapImageFilter();

  virtual ~SignedMaurerDistanceMapImageFilter();

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

  void GenerateData();

  unsigned int SplitRequestedRegion(unsigned int i, unsigned int num,
    OutputImageRegionType & splitRegion);

  void ThreadedGenerateData(const OutputImageRegionType & outputRegionForThread,
                            ThreadIdType threadId);

private:

  SignedMaurerDistanceMapImageFilter(const Self &); //purposely not implemented
  void operator=(const Self &);                     //purposely not implemented

  void Voronoi(unsigned int, OutputIndexType idx, OutputImageType *output );
  bool Remove(OutputPixelType, OutputPixelType, OutputPixelType,
              OutputPixelType, OutputPixelType, OutputPixelType);

  InputPixelType   m_BackgroundValue;
  InputSpacingType m_Spacing;

  unsigned int m_CurrentDimension;

  bool m_InsideIsPositive;
  bool m_UseImageSpacing;
  bool m_SquaredDistance;

  const InputImageType *m_InputCache;
};
} // end namespace itk

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

#endif