Review/Statistics/itkDistanceToCentroidMembershipFunction.h

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

  Program:   Insight Segmentation & Registration Toolkit
  Module:    $RCSfile: itkDistanceToCentroidMembershipFunction.h,v $
  Language:  C++
  Date:      $Date: 2009-05-02 05:43:55 $
  Version:   $Revision: 1.1 $

  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 __itkDistanceToCentroidMembershipFunction_h
#define __itkDistanceToCentroidMembershipFunction_h

#include "itkMembershipFunctionBase.h"
#include "itkDistanceMetric.h"

namespace itk  { 
namespace Statistics  {

template< class TVector >
class ITK_EXPORT DistanceToCentroidMembershipFunction :
      public MembershipFunctionBase< TVector >
{
public:
  typedef DistanceToCentroidMembershipFunction        Self;
  typedef MembershipFunctionBase< TVector >           Superclass;
  typedef SmartPointer<Self>                          Pointer;
  typedef SmartPointer<const Self>                    ConstPointer;

  itkTypeMacro(DistanceToCentroidMembershipFunction,
               MembershipFunctionBase);
  itkNewMacro(Self);

  typedef TVector MeasurementVectorType;

  typedef typename Superclass::MeasurementVectorSizeType 
                                                  MeasurementVectorSizeType;

  virtual void SetMeasurementVectorSize( MeasurementVectorSizeType );

  typedef DistanceMetric< MeasurementVectorType >     DistanceMetricType;
  typedef typename DistanceMetricType::Pointer        DistanceMetricPointer;

  itkSetObjectMacro( DistanceMetric, DistanceMetricType );
  itkGetConstObjectMacro( DistanceMetric, DistanceMetricType );

  typedef typename DistanceMetricType::OriginType     CentroidType;

  void SetCentroid(const CentroidType & centroid);

  const CentroidType & GetCentroid() const;

  double Evaluate(const MeasurementVectorType &measurement) const;

  Pointer Clone(); 

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

private:

  DistanceMetricPointer         m_DistanceMetric;

};

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

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

#endif