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/*=========================================================================
*
* Copyright NumFOCUS
*
* 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
*
* https://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_hxx
#define itkDistanceToCentroidMembershipFunction_hxx
#include "itkEuclideanDistanceMetric.h"
namespace itk
{
namespace Statistics
{
template <typename TVector>
DistanceToCentroidMembershipFunction<TVector>::DistanceToCentroidMembershipFunction()
{
// Initialize by default to an Euclidean distance. This default can be
// changed by calling SetDistanceMetric().
m_DistanceMetric = EuclideanDistanceMetric<TVector>::New();
}
template <typename TVector>
void
DistanceToCentroidMembershipFunction<TVector>::SetCentroid(const CentroidType & centroid)
{
if (centroid != m_DistanceMetric->GetOrigin())
{
m_DistanceMetric->SetOrigin(centroid);
this->Modified();
}
}
template <typename TVector>
void
DistanceToCentroidMembershipFunction<TVector>::SetMeasurementVectorSize(MeasurementVectorSizeType s)
{
this->Superclass::SetMeasurementVectorSize(s);
m_DistanceMetric->SetMeasurementVectorSize(s);
}
template <typename TVector>
auto
DistanceToCentroidMembershipFunction<TVector>::GetCentroid() const -> const CentroidType &
{
return m_DistanceMetric->GetOrigin();
}
template <typename TVector>
double
DistanceToCentroidMembershipFunction<TVector>::Evaluate(const MeasurementVectorType & measurement) const
{
return m_DistanceMetric->Evaluate(measurement);
}
template <typename TVector>
typename LightObject::Pointer
DistanceToCentroidMembershipFunction<TVector>::InternalClone() const
{
LightObject::Pointer loPtr = Superclass::InternalClone();
typename Self::Pointer membershipFunction = dynamic_cast<Self *>(loPtr.GetPointer());
if (membershipFunction.IsNull())
{
itkExceptionMacro("downcast to type " << this->GetNameOfClass() << " failed.");
}
membershipFunction->SetMeasurementVectorSize(this->GetMeasurementVectorSize());
membershipFunction->SetCentroid(this->GetCentroid());
return loPtr;
}
template <typename TVector>
void
DistanceToCentroidMembershipFunction<TVector>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Distance Metric: " << m_DistanceMetric.GetPointer() << std::endl;
}
} // end namespace Statistics
} // end of namespace itk
#endif
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