TgcL0SegmentReconstruction.h

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/*
   Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
#ifndef L0MUONS1TGCFLOATINGTOOLS_TGCL0SEGMENTRECONSTRUCTION_H
#define L0MUONS1TGCFLOATINGTOOLS_TGCL0SEGMENTRECONSTRUCTION_H
 
#include "GaudiKernel/StatusCode.h"
#include "L0MuonS1TGCToolInterfaces/TgcL0Candidate.h"
#include "L0MuonS1TGCToolInterfaces/TgcL0Segment.h"
#include "TgcL0FloatingData.h"
 
#include <cstddef>
 
namespace L0Muon {
namespace TgcL0Floating {
 
struct SegmentReconstructionConfig {
  float maxCandidateDThetaAbs{0.10F};
  float maxCandidateDPhiAbs{0.10F};

  float maxPivotWireStripDeltaEta{-1.F};
  float maxPivotWireStripDeltaPhi{0.35F};

  std::size_t maxSegmentCombinationsPerGroup{8U};

  std::size_t maxCandidatesPerLocalBin{8U};
  float localCandidateEtaBinWidth{0.01F};
  float localCandidatePhiBinWidth{0.01F};

  std::size_t maxCandidatesPerLocalPosition{1U};
  float localDuplicateEtaWindow{0.02F};
  float localDuplicatePhiWindow{0.03F};
};
 
struct SegmentStatistics {
  std::size_t nWireSegments{0};
  std::size_t nStripSegments{0};
  std::size_t nM1M2M3Candidates{0};
  std::size_t nM1M2Candidates{0};
  std::size_t nM1M3Candidates{0};
  std::size_t nM2M3Candidates{0};
  std::size_t nM1OnlyPositionCandidates{0};
  std::size_t nM2OnlyPositionCandidates{0};
  std::size_t nM3OnlyPositionCandidates{0};
  std::size_t nRejectedProjectionCombinations{0};
  std::size_t nDuplicateProjectionSegments{0};
  std::size_t nLimitedProjectionSegments{0};
  std::size_t nRejectedPairs{0};
  std::size_t nDuplicateCandidates{0};
  std::size_t nLocalDuplicateCandidates{0};
  std::size_t nLimitedCandidates{0};
};

class SegmentReconstruction {
 public:
  explicit SegmentReconstruction(
      SegmentReconstructionConfig config = SegmentReconstructionConfig{});
 
  StatusCode build(const StationCoincidenceContainer& coincidences,
                   TgcL0CandidateContainer& candidates,
                   SegmentStatistics& statistics,
                   TgcL0SegmentContainer* validationSegments = nullptr) const;
 
 private:
  SegmentReconstructionConfig m_config{};
};
 
}  // namespace TgcL0Floating
}  // namespace L0Muon
 
#endif