rtkAddMatrixAndDiagonalImageFilter.h

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/*=========================================================================
 *
 *  Copyright RTK 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
 *
 *         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 rtkAddMatrixAndDiagonalImageFilter_h
#define rtkAddMatrixAndDiagonalImageFilter_h

#include "itkImageToImageFilter.h"
#include "rtkMacro.h"

namespace rtk
{
template <class TDiagonal,
          class TMatrix = itk::Image<itk::Vector<typename TDiagonal::PixelType::ValueType,
                                                 TDiagonal::PixelType::Dimension * TDiagonal::PixelType::Dimension>,
                                     TDiagonal::ImageDimension>>
class ITK_TEMPLATE_EXPORT AddMatrixAndDiagonalImageFilter : public itk::ImageToImageFilter<TMatrix, TMatrix>
{
public:
  ITK_DISALLOW_COPY_AND_MOVE(AddMatrixAndDiagonalImageFilter);

  using Self = AddMatrixAndDiagonalImageFilter;
  using Superclass = itk::ImageToImageFilter<TMatrix, TMatrix>;
  using Pointer = itk::SmartPointer<Self>;

  itkNewMacro(Self);

#ifdef itkOverrideGetNameOfClassMacro
  itkOverrideGetNameOfClassMacro(AddMatrixAndDiagonalImageFilter);
#else
  itkTypeMacro(AddMatrixAndDiagonalImageFilter, itk::ImageToImageFilter);
#endif


  static constexpr unsigned int nChannels = TDiagonal::PixelType::Dimension;

  using dataType = typename TDiagonal::PixelType::ValueType;

  void
  SetInputDiagonal(const TDiagonal * gradient);
  void
  SetInputMatrix(const TMatrix * hessian);

protected:
  AddMatrixAndDiagonalImageFilter();
  ~AddMatrixAndDiagonalImageFilter() override = default;

  void
  GenerateInputRequestedRegion() override;

  void
  DynamicThreadedGenerateData(const typename TDiagonal::RegionType & outputRegionForThread) override;

  typename TDiagonal::ConstPointer
  GetInputDiagonal();
  typename TMatrix::ConstPointer
  GetInputMatrix();
};
} // namespace rtk


#ifndef ITK_MANUAL_INSTANTIATION
#  include "rtkAddMatrixAndDiagonalImageFilter.hxx"
#endif

#endif