BackProjectorByBinUsingProjMatrixByBin.h

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#ifndef _BackProjectorByBinUsingProjMatrixByBin_
#define _BackProjectorByBinUsingProjMatrixByBin_

/*
    Copyright (C) 2000 PARAPET partners
    Copyright (C) 2000- 2009, Hammersmith Imanet Ltd
    This file is part of STIR.

    SPDX-License-Identifier: Apache-2.0 AND License-ref-PARAPET-license

    See STIR/LICENSE.txt for details
*/

#include "stir/recon_buildblock/ProjMatrixByBin.h"
#include "stir/recon_buildblock/BackProjectorByBin.h"
#include "stir/RegisteredParsingObject.h"
#include "stir/shared_ptr.h"
//#include "stir/DataSymmetriesForBins.h"
//#include "stir/RelatedViewgrams.h"

class Viewgrams;
template <typename elemT>
class RelatedViewgrams;
class ProjDataInfoCylindricalArcCorr;

START_NAMESPACE_STIR

class BackProjectorByBinUsingProjMatrixByBin
    : public RegisteredParsingObject<BackProjectorByBinUsingProjMatrixByBin, BackProjectorByBin>
{
public:
  static const char* const registered_name;

  BackProjectorByBinUsingProjMatrixByBin();

  BackProjectorByBinUsingProjMatrixByBin(const shared_ptr<ProjMatrixByBin>& proj_matrix_ptr);


  void set_up(const shared_ptr<const ProjDataInfo>& proj_data_info_ptr,
              const shared_ptr<const DiscretisedDensity<3, float>>& density_info_ptr // TODO should be Info only
              ) override;

  const DataSymmetriesForViewSegmentNumbers* get_symmetries_used() const override;

  void actual_back_project(DiscretisedDensity<3, float>& image,
                           const RelatedViewgrams<float>&,
                           const int min_axial_pos_num,
                           const int max_axial_pos_num,
                           const int min_tangential_pos_num,
                           const int max_tangential_pos_num) override;

  shared_ptr<ProjMatrixByBin>& get_proj_matrix_sptr() { return proj_matrix_ptr; }

  BackProjectorByBinUsingProjMatrixByBin* clone() const override;

protected:
  shared_ptr<ProjMatrixByBin> proj_matrix_ptr;

  // currently not exposed, but leaving this ine for the future
  void actual_back_project(DiscretisedDensity<3, float>& image, const Bin& bin);

private:
  void set_defaults() override;
  void initialise_keymap() override;
  bool post_processing() override;
};

END_NAMESPACE_STIR

//#include "stir/recon_buildblock/BackProjectorByBinUsingProjMatrixByBin.inl"

#endif