itkSignedMaurerDistanceMapImageFilter.h

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/*=========================================================================

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkSignedMaurerDistanceMapImageFilter.h,v $
  Language:  C++
  Date:      $Date: 2008-08-01 20:07:06 $
  Version:   $Revision: 1.5 $

  Copyright (c) Insight Software Consortium. All rights reserved.
  See ITKCopyright.txt or http://www.itk.org/HTML/Copyright.htm for details.

     This software is distributed WITHOUT ANY WARRANTY; without even
     the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
     PURPOSE.  See the above copyright notices for more information.

=========================================================================*/
#ifndef __itkSignedMaurerDistanceMapImageFilter_h
#define __itkSignedMaurerDistanceMapImageFilter_h

#include "itkImage.h"
#include "itkImageToImageFilter.h"

namespace itk
{

template <class TInputImage, class TOutputImage>
class 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 TOutputImage   OutputImageType;

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

  typedef typename InputImageType::SizeType    InputSizeType;
  typedef typename OutputImageType::SizeType   OutputSizeType;

  typedef typename InputImageType::IndexType   InputIndexType;
  typedef typename OutputImageType::IndexType  OutputIndexType;

  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();

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

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

  
private:

  SignedMaurerDistanceMapImageFilter(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
  
  void Voronoi( unsigned int, OutputIndexType );
  bool Remove( OutputPixelType, OutputPixelType, OutputPixelType, 
               OutputPixelType, OutputPixelType, OutputPixelType );
  
  InputPixelType         m_BackgroundValue;  
  InputSpacingType       m_Spacing;

  bool                   m_InsideIsPositive;
  bool                   m_UseImageSpacing;
  bool                   m_SquaredDistance;
  
  unsigned int           m_CurrentDimension;

};

} // end namespace itk

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

#endif

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