/*=========================================================================
 *
 *  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 itkANTSNeighborhoodCorrelationImageToImageMetricv4_hxx
#define itkANTSNeighborhoodCorrelationImageToImageMetricv4_hxx

#include "itkNumericTraits.h"

namespace itk
{

template <typename TFixedImage,
          typename TMovingImage,
          typename TVirtualImage,
          typename TInternalComputationValueType,
          typename TMetricTraits>
ANTSNeighborhoodCorrelationImageToImageMetricv4<TFixedImage,
                                                TMovingImage,
                                                TVirtualImage,
                                                TInternalComputationValueType,
                                                TMetricTraits>::ANTSNeighborhoodCorrelationImageToImageMetricv4()
{
  // initialize radius. note that a radius of 1 can be unstable
  using RadiusValueType = typename RadiusType::SizeValueType;
  this->m_Radius.Fill(static_cast<RadiusValueType>(2));
  // We have our own GetValueAndDerivativeThreader's that we want
  // ImageToImageMetricv4 to use.
  this->m_DenseGetValueAndDerivativeThreader =
    ANTSNeighborhoodCorrelationImageToImageMetricv4DenseGetValueAndDerivativeThreaderType::New();
  this->m_SparseGetValueAndDerivativeThreader =
    ANTSNeighborhoodCorrelationImageToImageMetricv4SparseGetValueAndDerivativeThreaderType::New();
}

template <typename TFixedImage,
          typename TMovingImage,
          typename TVirtualImage,
          typename TInternalComputationValueType,
          typename TMetricTraits>
void
ANTSNeighborhoodCorrelationImageToImageMetricv4<TFixedImage,
                                                TMovingImage,
                                                TVirtualImage,
                                                TInternalComputationValueType,
                                                TMetricTraits>::Initialize()
{
  Superclass::Initialize();
}

template <typename TFixedImage,
          typename TMovingImage,
          typename TVirtualImage,
          typename TInternalComputationValueType,
          typename TMetricTraits>
void
ANTSNeighborhoodCorrelationImageToImageMetricv4<TFixedImage,
                                                TMovingImage,
                                                TVirtualImage,
                                                TInternalComputationValueType,
                                                TMetricTraits>::PrintSelf(std::ostream & os, Indent indent) const
{
  Superclass::PrintSelf(os, indent);
  os << indent << "Correlation window radius: " << m_Radius << std::endl;
}

} // end namespace itk

#endif
