itkDistanceToCentroidMembershipFunction.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 __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 typename Superclass::Pointer MembershipFunctionPointer;

  typedef TVector MeasurementVectorType;

  typedef typename Superclass::MeasurementVectorSizeType
  MeasurementVectorSizeType;

  virtual void SetMeasurementVectorSize(MeasurementVectorSizeType);

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

  itkSetObjectMacro(DistanceMetric, DistanceMetricType);

  itkGetModifiableObjectMacro(DistanceMetric, DistanceMetricType);

  void SetCentroid(const CentroidType & centroid);

  const CentroidType & GetCentroid() const;

  double Evaluate(const MeasurementVectorType & measurement) const;

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

  virtual typename LightObject::Pointer InternalClone() const;

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

  DistanceMetricPointer m_DistanceMetric;
};
} // end of namespace Statistics
} // end namespace itk

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

#endif