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/*=========================================================================
Program: Insight Segmentation & Registration Toolkit
Module: $RCSfile: itkMixtureModelComponentBase.txx,v $
Language: C++
Date: $Date: 2009-03-04 15:24:03 $
Version: $Revision: 1.10 $
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 __itkMixtureModelComponentBase_txx
#define __itkMixtureModelComponentBase_txx
#include "itkMixtureModelComponentBase.h"
namespace itk {
namespace Statistics {
template< class TSample >
MixtureModelComponentBase< TSample >
::MixtureModelComponentBase()
{
m_Sample = 0;
m_MembershipFunction = 0;
m_Weights = 0;
m_MinimalParametersChange = 1.0e-06;
m_ParametersModified = true;
}
template< class TSample >
MixtureModelComponentBase< TSample >
::~MixtureModelComponentBase()
{
if ( m_Weights != 0 )
{
delete m_Weights;
m_Weights = 0;
}
}
template< class TSample >
void
MixtureModelComponentBase< TSample >
::PrintSelf(std::ostream& os, Indent indent) const
{
Superclass::PrintSelf(os,indent);
os << indent << "Sample: ";
if ( m_Sample != 0 )
{
os << m_Sample << std::endl;
}
else
{
os << "not set." << std::endl;
}
os << indent << "Membership Function: ";
if ( m_MembershipFunction != 0 )
{
os << m_MembershipFunction << std::endl;
}
else
{
os << "not instantiated yet." << std::endl;
}
os << indent << "Weights Array: ";
if ( m_Weights != 0 )
{
os << m_Weights << std::endl;
}
else
{
os << "not allocated yet." << std::endl;
}
os << indent << "Parameters are modified: " << m_ParametersModified
<< std::endl;
}
template< class TSample >
void
MixtureModelComponentBase< TSample >
::SetSample(const TSample* sample)
{
m_Sample = sample;
this->CreateWeightArray();
}
template< class TSample >
const TSample*
MixtureModelComponentBase< TSample >
::GetSample() const
{
return m_Sample;
}
template< class TSample >
void
MixtureModelComponentBase< TSample >
::SetParameters(const ParametersType ¶meters)
{
if ( m_Parameters != parameters )
{
m_Parameters = parameters;
this->AreParametersModified(true);
}
}
template< class TSample >
bool
MixtureModelComponentBase< TSample >
::AreParametersModified()
{
return m_ParametersModified;
}
template< class TSample >
void
MixtureModelComponentBase< TSample >
::AreParametersModified(bool flag)
{
m_ParametersModified = flag;
}
template< class TSample >
typename MixtureModelComponentBase< TSample >::WeightArrayType*
MixtureModelComponentBase< TSample >
::GetWeights()
{
return m_Weights;
}
template< class TSample >
void
MixtureModelComponentBase< TSample >
::CreateWeightArray()
{
if ( m_Weights != 0 )
{
delete m_Weights;
m_Weights = 0;
}
m_Weights = new WeightArrayType(m_Sample->Size());
}
template< class TSample >
void
MixtureModelComponentBase< TSample >
::DeleteWeightArray()
{
if ( m_Weights != 0 )
{
delete m_Weights;
}
}
template< class TSample >
void
MixtureModelComponentBase< TSample >
::SetMembershipFunction(MembershipFunctionType* function)
{
m_MembershipFunction = function;
}
template< class TSample >
typename MixtureModelComponentBase< TSample >::MembershipFunctionType*
MixtureModelComponentBase< TSample >
::GetMembershipFunction()
{
return m_MembershipFunction;
}
template< class TSample >
inline double
MixtureModelComponentBase< TSample >
::Evaluate(MeasurementVectorType& measurements)
{
return m_MembershipFunction->Evaluate(measurements);
}
template< class TSample >
inline void
MixtureModelComponentBase< TSample >
::SetWeight(int index, double value)
{
if ( m_Weights != 0 )
{
(*m_Weights)[index] = value;
}
else
{
itkExceptionMacro("Weight array is not allocated.");
}
}
template< class TSample >
inline double
MixtureModelComponentBase< TSample >
::GetWeight(int index)
{
if ( m_Weights != 0 )
{
return (*m_Weights)[index];
}
else
{
itkExceptionMacro("Weight array is not allocated.");
}
}
template< class TSample >
void
MixtureModelComponentBase< TSample >
::Update()
{
this->GenerateData();
}
template< class TSample >
void
MixtureModelComponentBase< TSample >
::GenerateData()
{
// subclasses should override this function.
}
} // end of namespace Statistics
} // end of namespace itk
#endif
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