itkSignedDanielssonDistanceMapImageFilter.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 __itkSignedDanielssonDistanceMapImageFilter_h
#define __itkSignedDanielssonDistanceMapImageFilter_h

#include "itkDanielssonDistanceMapImageFilter.h"
#include "itkSubtractImageFilter.h"

//Simple functor to invert an image for Outside Danielsson distance map
namespace itk
{
namespace Functor
{
template< typename InputPixelType >
class InvertIntensityFunctor
{
public:
  InputPixelType operator()(InputPixelType input) const
  {
    if ( input )
      {
      return NumericTraits< InputPixelType >::Zero;
      }
    else
      {
      return NumericTraits< InputPixelType >::One;
      }
  }
};
}
}

namespace itk
{
template< typename TInputImage,
          typename TOutputImage,
          typename TVoronoiImage = TInputImage >
class SignedDanielssonDistanceMapImageFilter:
  public ImageToImageFilter< TInputImage, TOutputImage >
{
public:
  typedef SignedDanielssonDistanceMapImageFilter          Self;
  typedef ImageToImageFilter< TInputImage, TOutputImage > Superclass;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer< const Self >                      ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(SignedDanielssonDistanceMapImageFilter, ImageToImageFilter);

  typedef   TInputImage InputImageType;

  typedef   TOutputImage OutputImageType;

  typedef typename InputImageType::RegionType RegionType;

  typedef typename RegionType::IndexType IndexType;

  typedef typename InputImageType::OffsetType OffsetType;

  typedef typename InputImageType::PixelType PixelType;

  typedef typename RegionType::SizeType SizeType;

  itkStaticConstMacro(InputImageDimension, unsigned int,
                      InputImageType::ImageDimension);

  typedef Image< OffsetType,
                 itkGetStaticConstMacro(InputImageDimension) > VectorImageType;

  typedef typename InputImageType::ConstPointer InputImagePointer;

  typedef typename OutputImageType::Pointer OutputImagePointer;

  typedef typename VectorImageType::Pointer VectorImagePointer;

  typedef TVoronoiImage                         VoronoiImageType;
  typedef typename VoronoiImageType::Pointer    VoronoiImagePointer;
  typedef typename VoronoiImageType::PixelType  VoronoiPixelType;

  typedef typename Superclass::DataObjectPointer DataObjectPointer;

  itkSetMacro(SquaredDistance, bool);

  itkGetConstReferenceMacro(SquaredDistance, bool);

  itkBooleanMacro(SquaredDistance);

  itkSetMacro(UseImageSpacing, bool);

  itkGetConstReferenceMacro(UseImageSpacing, bool);

  itkBooleanMacro(UseImageSpacing);

  itkSetMacro(InsideIsPositive, bool);

  itkGetConstReferenceMacro(InsideIsPositive, bool);

  itkBooleanMacro(InsideIsPositive);

  VoronoiImageType * GetVoronoiMap(void);

  OutputImageType * GetDistanceMap(void);

  VectorImageType * GetVectorDistanceMap(void);

  typedef ProcessObject::DataObjectPointerArraySizeType DataObjectPointerArraySizeType;
  using Superclass::MakeOutput;
  virtual DataObjectPointer MakeOutput(DataObjectPointerArraySizeType idx);

#ifdef ITK_USE_CONCEPT_CHECKING
  // Begin concept checking
  itkConceptMacro( IntConvertibleToInputCheck,
                   ( Concept::Convertible< int, PixelType > ) );
  itkConceptMacro( InputHasNumericTraitsCheck,
                   ( Concept::HasNumericTraits< PixelType > ) );
  // End concept checking
#endif

protected:
  SignedDanielssonDistanceMapImageFilter();
  virtual ~SignedDanielssonDistanceMapImageFilter() {}
  void PrintSelf(std::ostream & os, Indent indent) const;

  void GenerateData();

private:
  SignedDanielssonDistanceMapImageFilter(const Self &); //purposely not
                                                        // implemented
  void operator=(const Self &);                         //purposely not

  // implemented

  bool m_SquaredDistance;
  bool m_UseImageSpacing;
  bool m_InsideIsPositive; // ON is treated as inside pixels
};                         // end of SignedDanielssonDistanceMapImageFilter
                           // class
} //end namespace itk

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

#endif