ParallelprojHelper.h

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//
//
/*
    Copyright (C) 2021 University College London
    This file is part of STIR.

    SPDX-License-Identifier: Apache-2.0

    See STIR/LICENSE.txt for details
*/
#ifndef __stir_recon_buildblock_ParallelprojHelper_h__
#define __stir_recon_buildblock_ParallelprojHelper_h__

#include "stir/common.h"
#include <vector>
#include <array>

START_NAMESPACE_STIR

template <int num_dimensions, class elemT>
class DiscretisedDensity;
class ProjDataInfo;

namespace detail
{
class ParallelprojHelper
{
public:
  ~ParallelprojHelper();
  ParallelprojHelper(const ProjDataInfo& p_info, const DiscretisedDensity<3, float>& density);

  // parallelproj arrays
  std::array<float, 3> voxsize;
  std::array<int, 3> imgdim;
  std::array<float, 3> origin;
  std::vector<float> xstart;
  std::vector<float> xend;

  long long num_image_voxel;
  long long num_lors;

  float sigma_tof;
  float tofcenter_offset;
  float tofbin_width;
  short num_tof_bins;
};

} // namespace detail

END_NAMESPACE_STIR

#endif // __stir_recon_buildblock_ParallelprojHelper_h__