itkLevelSetNeighborhoodExtractor.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkLevelSetNeighborhoodExtractor.h,v $
  Language:  C++
  Date:      $Date: 2009-04-23 03:53:35 $
  Version:   $Revision: 1.27 $

  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 __itkLevelSetNeighborhoodExtractor_h
#define __itkLevelSetNeighborhoodExtractor_h

#include "itkLightProcessObject.h"
#include "itkLevelSet.h"
#include "itkIndex.h"

namespace itk
{

template <class TLevelSet>
class ITK_EXPORT LevelSetNeighborhoodExtractor :
    public LightProcessObject
{
public:
  typedef LevelSetNeighborhoodExtractor Self;
  typedef LightProcessObject            Superclass;
  typedef SmartPointer<Self>            Pointer;
  typedef SmartPointer<const Self>      ConstPointer;

  itkNewMacro(Self);

  itkTypeMacro(LevelSetNeighborhoodExtractor, Object);

  typedef LevelSetTypeDefault<TLevelSet>              LevelSetType;
  typedef typename LevelSetType::LevelSetImageType    LevelSetImageType;
  typedef typename LevelSetType::LevelSetPointer      LevelSetPointer;
  typedef typename LevelSetType::LevelSetConstPointer LevelSetConstPointer;
  typedef typename LevelSetType::PixelType            PixelType;
  typedef typename LevelSetType::NodeType             NodeType;
  typedef typename LevelSetType::NodeContainer        NodeContainer;
  typedef typename LevelSetType::NodeContainerPointer NodeContainerPointer;

  itkStaticConstMacro(SetDimension, unsigned int,
                      LevelSetType::SetDimension);

  typedef Index<itkGetStaticConstMacro(SetDimension)> IndexType;

  itkSetConstObjectMacro( InputLevelSet, LevelSetImageType );

  itkGetConstObjectMacro( InputLevelSet, LevelSetImageType );

  itkSetMacro( LevelSetValue, double );

  itkGetConstMacro( LevelSetValue, double );

  itkSetClampMacro( NarrowBandwidth, double, 0.0, 
                    NumericTraits<double>::max());

  itkGetConstMacro( NarrowBandwidth, double );

  itkSetMacro( NarrowBanding, bool );

  itkGetConstMacro( NarrowBanding, bool );
  itkBooleanMacro( NarrowBanding );

  void SetInputNarrowBand( NodeContainer * ptr );
  itkGetObjectMacro( InputNarrowBand, NodeContainer );

  NodeContainerPointer GetInsidePoints()
    { return m_InsidePoints; }

  NodeContainerPointer GetOutsidePoints(void)
    { return m_OutsidePoints; }

  void Locate();

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

  typename LevelSetImageType::PixelType GetLargeValue() const
  { return m_LargeValue; }

  const NodeType& GetNodeUsedInCalculation(unsigned int idx) const
  { return m_NodesUsed[idx]; }

  virtual void Initialize();
  virtual double CalculateDistance( IndexType& index );

  void GenerateData();

  bool GetLastPointIsInside() const
    { return m_LastPointIsInside; }

private:
  LevelSetNeighborhoodExtractor(const Self&); //purposely not implemented
  void operator=(const Self&); //purposely not implemented
  
  void      GenerateDataFull();
  void      GenerateDataNarrowBand();

  double                                        m_LevelSetValue;

  NodeContainerPointer                          m_InsidePoints;
  NodeContainerPointer                          m_OutsidePoints;

  LevelSetConstPointer                          m_InputLevelSet;

  bool                                          m_NarrowBanding;
  double                                        m_NarrowBandwidth;
  NodeContainerPointer                          m_InputNarrowBand;

  signed long                                   m_ImageSize[SetDimension];
  typename LevelSetImageType::PixelType         m_LargeValue;

  std::vector<NodeType>                         m_NodesUsed;

  bool                                          m_LastPointIsInside;

};


} // namespace itk

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

#endif

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