itkPointSetToListAdaptor.h

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

Program:   Insight Segmentation & Registration Toolkit
Module:    $RCSfile: itkPointSetToListAdaptor.h,v $
Language:  C++
Date:      $Date: 2009-03-04 15:24:04 $
Version:   $Revision: 1.16 $

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 __itkPointSetToListAdaptor_h
#define __itkPointSetToListAdaptor_h

#include <typeinfo>

#include "itkPointSet.h"
#include "itkListSampleBase.h"
#include "itkSmartPointer.h"

namespace itk { 
namespace Statistics {

template < class TPointSet >
class ITK_EXPORT PointSetToListAdaptor :
    public ListSampleBase< typename TPointSet::PointType >
{
public:
  typedef PointSetToListAdaptor                           Self;
  typedef ListSampleBase< typename TPointSet::PointType > Superclass;
  typedef SmartPointer< Self >                            Pointer;
  typedef SmartPointer<const Self>                        ConstPointer;

  itkTypeMacro(PointSetToListAdaptor, ListSampleBase);

  itkNewMacro(Self);

  itkStaticConstMacro(MeasurementVectorSize, unsigned int,
                      TPointSet::PointDimension);

  typedef TPointSet                                   PointSetType;
  typedef typename TPointSet::Pointer                 PointSetPointer;
  typedef typename TPointSet::PointIdentifier         InstanceIdentifier;
  typedef typename TPointSet::PointsContainerPointer  PointsContainerPointer;
  typedef typename TPointSet::PointsContainerIterator PointsContainerIterator;
  typedef typename TPointSet::PointType               PointType;


  typedef typename Superclass::MeasurementType           MeasurementType;
  typedef typename Superclass::MeasurementVectorType     MeasurementVectorType;
  typedef MeasurementVectorType                          ValueType;
  typedef typename Superclass::FrequencyType             FrequencyType;
  typedef typename Superclass::TotalFrequencyType        TotalFrequencyType;
  typedef typename Superclass::MeasurementVectorSizeType MeasurementVectorSizeType;

  void SetPointSet(TPointSet* pointSet);

  TPointSet* GetPointSet();

  unsigned int Size() const;

  const MeasurementVectorType & GetMeasurementVector(const InstanceIdentifier &id) const;

  void SetMeasurement(const InstanceIdentifier &id, 
                      const unsigned int &dim,
                      const MeasurementType &value);

  FrequencyType GetFrequency(const InstanceIdentifier &id) const;

  TotalFrequencyType GetTotalFrequency() const;

  void SetMeasurementVectorSize( const MeasurementVectorSizeType s )
    {
    // MV size of the point set is fixed as that of the point's dimension
    // Throw exception if user tries to set it to a different value
    if( s != MeasurementVectorSize )
      {
      itkExceptionMacro( << "PointSetToListAdaptor's measurement vector lengths"
          << " cannot be set to " << s );
      }
    }

  MeasurementVectorSizeType GetMeasurementVectorSize() const
    {
    return MeasurementVectorSize;
    }
    

 
  class Iterator
  {
  public:
    
    Iterator(){}
    
    Iterator(PointsContainerIterator iter)
      :m_Iter(iter)
    {}
    
    FrequencyType GetFrequency() const
    { return 1;}

    const MeasurementVectorType & GetMeasurementVector() const
    { return (MeasurementVectorType&) m_Iter.Value();} 

    InstanceIdentifier GetInstanceIdentifier() const
    { return m_Iter.Index();}

    Iterator& operator++()
    { ++m_Iter; return *this;}
    
    Iterator& operator--()
    { --m_Iter; return *this;}

    bool operator!=(const Iterator &it)
    { return (m_Iter != it.m_Iter);}
    
    bool operator==(const Iterator &it)
    { return (m_Iter == it.m_Iter);}
    
    Iterator& operator = (const Iterator &iter)
    { 
      m_Iter = iter.m_Iter; 
      return iter;
    }

    Iterator(const Iterator &iter)
    { m_Iter = iter.m_Iter; }
    
  private:
    PointsContainerIterator m_Iter;
  };
   
 
  class ConstIterator
  {
  public:
    
    ConstIterator(){}
    
    ConstIterator(PointsContainerIterator iter)
      :m_Iter(iter)
    {}
    
    FrequencyType GetFrequency() const
    { return 1;}

    const MeasurementVectorType & GetMeasurementVector() const
    { return (MeasurementVectorType&) m_Iter.Value();} 

    InstanceIdentifier GetInstanceIdentifier() const
    { return m_Iter.Index();}

    ConstIterator& operator++()
    { ++m_Iter; return *this;}
    
    ConstIterator& operator--()
    { --m_Iter; return *this;}

    bool operator!=(const ConstIterator &it)
    { return (m_Iter != it.m_Iter);}
    
    bool operator==(const ConstIterator &it)
    { return (m_Iter == it.m_Iter);}
    
    ConstIterator& operator = (const ConstIterator &iter)
    { 
      m_Iter = iter.m_Iter; 
      return iter;
    }

    ConstIterator(const ConstIterator &iter)
    { m_Iter = iter.m_Iter; }
    
  private:
    PointsContainerIterator m_Iter;
  };
   
  Iterator Begin()
    { 
    Iterator iter(m_PointsContainer->Begin());
    return iter; 
    }

  Iterator End()
    {
    Iterator iter(m_PointsContainer->End()); 
    return iter; 
    }

  ConstIterator Begin() const
    { 
    ConstIterator iter(m_PointsContainer->Begin());
    return iter; 
    }

  ConstIterator End() const
    {
    ConstIterator iter(m_PointsContainer->End()); 
    return iter; 
    }

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

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

  mutable PointSetPointer m_PointSet;

  PointsContainerPointer m_PointsContainer;

  mutable PointType m_TempPoint;
}; // end of class PointSetToListAdaptor

} // end of namespace Statistics
} // end of namespace itk


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

#endif

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