SegmentFitHelperFunctions.h

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/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
#ifndef MUONR4__MuonSegmentFitHelperFunctions__H
#define MUONR4__MuonSegmentFitHelperFunctions__H
 
#include "MuonPatternEvent/MuonHoughDefs.h"
#include "Acts/Seeding/HoughTransformUtils.hpp"
 
 
class MsgStream;
 
namespace MuonR4{
    class CalibratedSpacePoint;
    class SpacePoint;
 
    namespace SegmentFitHelpers{
      double chiSqTerm(const Amg::Vector3D& posInChamber,
                       const Amg::Vector3D& dirInChamber,
                       const SpacePoint& measurement,
                       MsgStream& msg);
      double chiSqTermMdt(const Amg::Vector3D& posInChamber,
                          const Amg::Vector3D& dirInChamber,
                          const SpacePoint& measurement,
                          MsgStream& msg);
      double chiSqTermStrip(const Amg::Vector3D& posInChamber,
                            const Amg::Vector3D& dirInChamber,
                            const SpacePoint& measurement,
                            MsgStream& msg);
 
 
      double chiSqTerm(const Amg::Vector3D& posInChamber,
                       const Amg::Vector3D& dirInChamber,
                       const double timeShift,
                       std::optional<double> arrivalTime,
                       const CalibratedSpacePoint& measurement,
                       MsgStream& msg);
      double chiSqTermMdt(const Amg::Vector3D& posInChamber,
                          const Amg::Vector3D& dirInChamber,
                          const CalibratedSpacePoint& mdtSpacePoint,
                          MsgStream& msg);
      double chiSqTermStrip(const Amg::Vector3D& posInChamber,
                            const Amg::Vector3D& dirInChamber,
                            const double timeShift,
                            std::optional<double> arrivalTime,
                            const CalibratedSpacePoint& strip,
                            MsgStream& msg);
      double chiSqTermBeamspot(const Amg::Vector3D& posInChamber,
                               const Amg::Vector3D& dirInChamber,
                               const CalibratedSpacePoint& beamSpotMeas,
                               MsgStream& msg);
 
      std::vector<int> driftSigns(const Amg::Vector3D& posInChamber,
                                  const Amg::Vector3D& dirInChamber,
                                  const std::vector<const SpacePoint*>& uncalibHits,
                                  MsgStream& msg);
      
      int driftSign (const Amg::Vector3D& posInChamber,
                     const Amg::Vector3D& dirInChamber,
                     const SpacePoint& uncalibHit,
                     MsgStream& msg);
 
      int driftSign(const Amg::Vector3D& posInChamber,
                    const Amg::Vector3D& dirInChamber,
                    const CalibratedSpacePoint& calibHit,
                    MsgStream& msg);
 
      std::pair<std::vector<double>, double> postFitChi2PerMas(const SegmentFit::Parameters& segPars,
                                                               std::optional<double> arrivalTime,
                                                               std::vector<std::unique_ptr<CalibratedSpacePoint>>& hits,
                                                               MsgStream& msg);
    }
}
 
#endif // MUONR4__MuonSegmentFitHelperFunctions__H