BinFinder.hpp

Go to the documentation of this file. Or view the newest version in sPHENIX GitHub for file BinFinder.hpp

// This file is part of the Acts project.
//
// Copyright (C) 2023 CERN for the benefit of the Acts project
//
// This Source Code Form is subject to the terms of the Mozilla Public
// License, v. 2.0. If a copy of the MPL was not distributed with this
// file, You can obtain one at http://mozilla.org/MPL/2.0/.

#pragma once

#include "Acts/Seeding/SpacePointGrid.hpp"
#include "Acts/Utilities/Holders.hpp"

#include <vector>

#include <boost/container/small_vector.hpp>

namespace Acts {

template <typename external_spacepoint_t>
class BinFinder {
 public:
  BinFinder() = delete;

  BinFinder(const std::vector<std::pair<int, int>>& zBinNeighbors,
            int numPhiNeighbors);

  boost::container::small_vector<size_t, 9> findBins(
      size_t phiBin, size_t zBin,
      const SpacePointGrid<external_spacepoint_t>* binnedSP) const;

 private:
  // This vector is provided by the user and is supposed to be a constant for
  // all events. No point in making a copy
  Acts::detail::RefHolder<const std::vector<std::pair<int, int>>>
      m_zBinNeighbors;
  int m_numPhiNeighbors = 1;
};
}  // namespace Acts
#include "Acts/Seeding/BinFinder.ipp"