itkNeighborhoodAccessorFunctor.h

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/*=========================================================================
 *
 *  Copyright Insight Software Consortium
 *
 *  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
 *
 *         http://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 itkNeighborhoodAccessorFunctor_h
#define itkNeighborhoodAccessorFunctor_h

#include "itkImageBoundaryCondition.h"
#include "itkImageBase.h"

namespace itk
{
template< typename TImage >
class ITK_TEMPLATE_EXPORT NeighborhoodAccessorFunctor final
{
public:
  using Self = NeighborhoodAccessorFunctor;
  using ImageType = TImage;
  using PixelType = typename ImageType::PixelType;
  using InternalPixelType = typename ImageType::InternalPixelType;
  using VectorLengthType = unsigned int;
  using OffsetType = typename ImageType::OffsetType;

  static constexpr unsigned int ImageDimension = TImage::ImageDimension;
  using NeighborhoodType = Neighborhood< InternalPixelType *, Self::ImageDimension >;

  template<typename TOutput=ImageType>
  using ImageBoundaryConditionType = ImageBoundaryCondition<ImageType, TOutput>;

  inline void SetBegin(const InternalPixelType *) {}

  inline PixelType Get(const InternalPixelType *pixelPointer) const
  {
    return ( *pixelPointer );
  }

  inline void Set(InternalPixelType * const pixelPointer, const PixelType & p) const
  {
    *pixelPointer = p;
  }

  template <typename TOutput>
  inline typename ImageBoundaryConditionType<TOutput>::OutputPixelType
    BoundaryCondition(
      const OffsetType & point_index,
      const OffsetType & boundary_offset,
      const NeighborhoodType *data,
      const ImageBoundaryConditionType<TOutput> *boundaryCondition) const
  {
    return boundaryCondition->operator()(point_index, boundary_offset, data);
  }

  void SetVectorLength(VectorLengthType) {}
  VectorLengthType SetVectorLength() { return 0; }
};
} // end namespace itk

//template< typename TImage > const unsigned int
// itk::NeighborhoodAccessorFunctor<TImage>::ImageDimension;

#endif