/*=========================================================================
 *
 *  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 itkKernelImageFilter_hxx
#define itkKernelImageFilter_hxx

#include "itkProgressAccumulator.h"

namespace itk
{
template <typename TInputImage, typename TOutputImage, typename TKernel>
KernelImageFilter<TInputImage, TOutputImage, TKernel>::KernelImageFilter()
{
  this->SetRadius(1UL);
}

template <typename TInputImage, typename TOutputImage, typename TKernel>
void
KernelImageFilter<TInputImage, TOutputImage, TKernel>::SetRadius(const RadiusType & radius)
{
  // SetKernel() must be called, because it can be overloaded in a subclass
  // - MovingHistogramImageFilterBase for example.
  KernelType kernel;
  // the right version of the MakeKernel method should be called there
  this->MakeKernel(radius, kernel);
  this->SetKernel(kernel);
}

template <typename TInputImage, typename TOutputImage, typename TKernel>
void
KernelImageFilter<TInputImage, TOutputImage, TKernel>::SetKernel(const KernelType & kernel)
{
  if (m_Kernel != kernel)
  {
    m_Kernel = kernel;
    this->Modified();
  }
  // set the radius of the super class to be the same than the kernel one
  Superclass::SetRadius(kernel.GetRadius());
}

template <typename TInputImage, typename TOutputImage, typename TKernel>
void
KernelImageFilter<TInputImage, TOutputImage, TKernel>::PrintSelf(std::ostream & os, Indent indent) const
{
  Superclass::PrintSelf(os, indent);

  os << indent << "Kernel: " << m_Kernel << std::endl;
}
} // namespace itk

#endif
