/*=========================================================================
 *
 *  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 itkVanHerkGilWermanErodeImageFilter_h
#define itkVanHerkGilWermanErodeImageFilter_h

// Intentionally include the Dilate filter to get the base class to avoid issues
// with itkFlatStructuringElement.hxx
#include "itkVanHerkGilWermanDilateImageFilter.h"

namespace itk
{
template <typename TPixel>
class MinFunctor
{
public:
  inline TPixel
  operator()(const TPixel & A, const TPixel & B) const
  {
    return std::min(A, B);
  }
};

template <typename TImage, typename TKernel>
class VanHerkGilWermanErodeImageFilter
  : public VanHerkGilWermanErodeDilateImageFilter<TImage, TKernel, MinFunctor<typename TImage::PixelType>>

{
public:
  ITK_DISALLOW_COPY_AND_MOVE(VanHerkGilWermanErodeImageFilter);

  using Self = VanHerkGilWermanErodeImageFilter;
  using Superclass = VanHerkGilWermanErodeDilateImageFilter<TImage, TKernel, MinFunctor<typename TImage::PixelType>>;

  /** \see LightObject::GetNameOfClass() */
  itkOverrideGetNameOfClassMacro(VanHerkGilWermanErodeImageFilter);

  using Pointer = SmartPointer<Self>;
  using ConstPointer = SmartPointer<const Self>;
  using PixelType = typename TImage::PixelType;

  /** Method for creation through the object factory. */
  itkNewMacro(Self);

protected:
  VanHerkGilWermanErodeImageFilter() { this->m_Boundary = NumericTraits<PixelType>::max(); }
  ~VanHerkGilWermanErodeImageFilter() override = default;

private:
};
} // namespace itk

#endif
