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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 itkDistanceMetric_hxx
#define itkDistanceMetric_hxx
namespace itk
{
namespace Statistics
{
template <typename TVector>
DistanceMetric<TVector>::DistanceMetric()
{
// If the measurement vector type is non-resizable type,
// initialize the vector size to it.
if (!MeasurementVectorTraits::IsResizable<MeasurementVectorType>({}))
{
MeasurementVectorSizeType defaultLength = NumericTraits<MeasurementVectorType>::GetLength({});
this->m_MeasurementVectorSize = defaultLength;
this->m_Origin.SetSize(this->m_MeasurementVectorSize);
}
else
{
// otherwise initialize it to zero
this->m_MeasurementVectorSize = 0;
}
m_Origin.Fill(0.0);
}
template <typename TVector>
void
DistanceMetric<TVector>::SetOrigin(const OriginType & x)
{
if (this->m_MeasurementVectorSize != 0)
{
if (x.Size() != this->m_MeasurementVectorSize)
{
itkExceptionMacro("Size of the origin must be same as the length of"
<< " each measurement vector.");
}
}
this->m_MeasurementVectorSize = x.Size();
m_Origin.SetSize(this->m_MeasurementVectorSize);
m_Origin = x;
this->Modified();
}
template <typename TVector>
void
DistanceMetric<TVector>::PrintSelf(std::ostream & os, Indent indent) const
{
Superclass::PrintSelf(os, indent);
os << indent << "Origin: " << this->GetOrigin() << std::endl;
os << indent << "MeasurementVectorSize: " << this->GetMeasurementVectorSize() << std::endl;
}
} // end of namespace Statistics
} // end of namespace itk
#endif
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