TrigElectron_v1.cxx

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/*
  Copyright (C) 2002-2026 CERN for the benefit of the ATLAS collaboration
*/
 
// $Id: TrigElectron_v1.cxx 797628 2017-02-16 21:31:00Z rwhite $
 
// System include(s):
#include <cmath>
 
// EDM include(s):
#include "xAODCore/AuxStoreAccessorMacros.h"
 
// Local include(s):
#include "xAODTrigEgamma/versions/TrigElectron_v1.h"
 
namespace xAOD {

   TrigElectron_v1::TrigElectron_v1()
      : IParticle() {
 
   }

   //
   //       Implementation of the functions inherited from IParticle
   //
 
   AUXSTORE_PRIMITIVE_GETTER_WITH_CAST( TrigElectron_v1, float, double, pt )
 
   
   double TrigElectron_v1::e() const {
 
      return genvecP4().E();
   }

   double TrigElectron_v1::rapidity() const {
 
      return genvecP4().Rapidity();
   }

   TrigElectron_v1::FourMom_t TrigElectron_v1::p4() const {
     FourMom_t p4;
     p4.SetPtEtaPhiM( pt(), eta(), phi(),m()); 
     return p4; 
   }

   TrigElectron_v1::GenVecFourMom_t TrigElectron_v1::genvecP4() const {
     return GenVecFourMom_t(pt(), eta(), phi(), m());
   } 
 
   //

   //
   //         Implementation of the "simple" electron properties
   //
 
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, uint32_t, roiWord,
                                         setRoiWord )
 
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, zvtx, setZvtx )
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, charge,
                                         setCharge )
 
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, int, nTRTHits,
                                         setNTRTHits )
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, int,
                                         nTRTHiThresholdHits,
                                         setNTRTHiThresholdHits )
 
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, rcore,
                                         setRcore )
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, eratio,
                                         setEratio )
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, etHad,
                                         setEtHad )
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, etHad1,
                                         setEtHad1 )
 
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, f0, setF0 )
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, f1, setF1 )
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, f2, setF2 )
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, f3, setF3 )
 
   //

   //
   //          Implementation of the 4-momentum handling functions
   //
 
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, trkEtaAtCalo,
                                         setTrkEtaAtCalo )
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, trkPhiAtCalo,
                                         setTrkPhiAtCalo )
 
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, etOverPt,
                                         setEtOverPt )
 
   float TrigElectron_v1::trkClusDeta() const {
 
      return std::abs( trkEtaAtCalo() - caloEta() );
   }
 
   float TrigElectron_v1::trkClusDphi() const {
 
      float result = std::abs( trkPhiAtCalo() - caloPhi() );
      if( ! ( result < M_PI ) ) {
         result = 2 * M_PI - result;
      }
      return result;
   }
 
   AUXSTORE_PRIMITIVE_SETTER_WITH_CAST( TrigElectron_v1, float, double, pt,
                                        setPt )
 
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, caloEta,
                                         setCaloEta ) 
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER( TrigElectron_v1, float, caloPhi,
                                         setCaloPhi )
 
   //

   //
   //          Implementation of the constituent accessor functions
   //
 
   
   const TrigEMCluster* TrigElectron_v1::emCluster() const {
 
      // The link accessor:
      static const Accessor< EMClusterLink_t > acc( "emClusterLink" );
 
      // Check if the link is available:
      if( ! acc.isAvailable( *this ) ) {
         return nullptr;
      }
 
      // Check if the link is valid:
      const EMClusterLink_t& link = acc( *this );
      if( ! link.isValid() ) {
         return nullptr;
      }
 
      // Return the pointer:
      return *link;
   }
 
   AUXSTORE_OBJECT_SETTER_AND_GETTER( TrigElectron_v1,
                                      TrigElectron_v1::EMClusterLink_t,
                                      emClusterLink,
                                      setEmClusterLink )
 
   
   const TrackParticle* TrigElectron_v1::trackParticle() const {
 
      // The link accessor:
      static const Accessor< TrackParticleLink_t > acc( "trackParticleLink" );
 
      // Check if the link is available:
      if( ! acc.isAvailable( *this ) ) {
         return nullptr;
      }
 
      // Check if the link is valid:
      const TrackParticleLink_t& link = acc( *this );
      if( ! link.isValid() ) {
         return nullptr;
      }
 
      // Return the pointer:
      return *link;
   }
 
   AUXSTORE_OBJECT_SETTER_AND_GETTER( TrigElectron_v1,
                                      TrigElectron_v1::TrackParticleLink_t,
                                      trackParticleLink,
                                      setTrackParticleLink )
 
   //

   void TrigElectron_v1::init( uint32_t roi,
                               float trkEtaAtCalo, float trkPhiAtCalo,
                               float etOverPt,
                               const EMClusterLink_t& clLink,
                               const TrackParticleLink_t& tpLink ) {
 
      setRoiWord( roi );
      setZvtx( 0 );
      setCharge( 0 );
      setNTRTHits( 0 );
      setNTRTHiThresholdHits( 0 );
      setTrkEtaAtCalo( trkEtaAtCalo );
      setTrkPhiAtCalo( trkPhiAtCalo );
      setEtOverPt( etOverPt );
      setCaloEta( 0 );
      setCaloPhi( 0 );
      setEtHad( 0 );
      setEtHad1( 0 );
      setRcore( 0 );
      setEratio( 0 );
      setF0( 0 );
      setF1( 0 );
      setF2( 0 );
      setF3( 0 );
 
      // Links to associated trigger track and EM cluster.
      setTrackParticleLink( tpLink );
      setEmClusterLink( clLink );
 
      // Stash tracking variables
      if( tpLink.isValid() ) {
 
         // Get the pointer:
         const TrackParticle* tpPtr = *tpLink;
 
         // get track author and nr. trt hits from track
         // setTrackAlgo(*tr_ptr->algorithmId());        ----> this is clearly wrong, but I still don't know about ELs...
         // All of this code needs to be updated to modern interface one-at-a-time.
         uint8_t TRThits;
         if( tpPtr->summaryValue( TRThits, xAOD::numberOfTRTHits ) ) {
            setNTRTHits( TRThits );
         }
 
         uint8_t TRTThresholdhits;
         if( tpPtr->summaryValue( TRTThresholdhits,
                                  xAOD::numberOfTRTHighThresholdHits ) ) {
            setNTRTHiThresholdHits( TRTThresholdhits );
         }
 
         // Initialize 4-momentum base-class angular quantities from track
         // data: assume that track parameters at perigee give better
         // estimates of angular quantities near vertex
         setZvtx( tpPtr->z0() );
         setCharge( tpPtr->charge() ); // is this correct? Needs to be checked by Calo experts
      }
 
      // Stash calo cluster variables.
      if( clLink.isValid() ) {
 
         // Get the pointer:
         const TrigEMCluster* clPtr = *clLink;
 
         /* Initialize 4-momentum base-class ET from cluster data: assume
            cluster quantities give better estimate of transverse energy */
         setPt( clPtr->et() ); 
 
         // eta-phi of cluster
         setCaloEta( clPtr->eta() );
         setCaloPhi( clPtr->phi() );
 
         // EThad
         if( caloEta() != 0 ) {
            const float cl_EThad  = clPtr->ehad1() / std::cosh( caloEta() ); // Ehad1/cosh(eta) */
            setEtHad( cl_EThad );
            setEtHad1( cl_EThad );
         } else {
            setEtHad( clPtr->ehad1() );                      // Ehad (=EThad1)
            setEtHad1( clPtr->ehad1() );                      // Ehad1 (=EThad)
         }
 
         // Rcore (test for positive energy to avoid zeros)
         const float e277 = clPtr->e277();
         const float e237 = clPtr->e237();
         if( e277 != 0 ) { // (VD) before it was '>'
            setRcore( e237 / e277 );
         } else {
            setRcore( 0 );
         }
 
         // Eratio (test for positive energy to avoid zeros)
         const float emaxs1 = clPtr->emaxs1();
         const float e2tsts1 = clPtr->e2tsts1();
         if( emaxs1 + e2tsts1 > 0 ) {
            const float cl_Eratio = ( ( emaxs1 - e2tsts1 ) /
                                      ( emaxs1 + e2tsts1 ) );
            setEratio( cl_Eratio );
         } else {
            setEratio( 0 );
         }
 
         // energy and energy fraction per sample
         const float tmp_cl_energy = clPtr->energy();
 
         if( std::abs( tmp_cl_energy ) > 0.00001 ) { // avoid floating-point exceptions
 
            const float cl_e_frac_S0 =
               ( clPtr->energy( CaloSampling::PreSamplerB ) +
                 clPtr->energy( CaloSampling::PreSamplerE ) ) / tmp_cl_energy;
            setF0( cl_e_frac_S0 );
 
            const float cl_e_frac_S1 =
               ( clPtr->energy( CaloSampling::EMB1 ) +
                 clPtr->energy( CaloSampling::EME1 ) ) / tmp_cl_energy;
            setF1( cl_e_frac_S1 );
 
            const float cl_e_frac_S2 =
               ( clPtr->energy( CaloSampling::EMB2 ) +
                 clPtr->energy( CaloSampling::EME2 ) ) / tmp_cl_energy;
            setF2( cl_e_frac_S2 );
 
            const float cl_e_frac_S3 =
               ( clPtr->energy( CaloSampling::EMB3 ) +
                 clPtr->energy( CaloSampling::EME3 ) ) / tmp_cl_energy;
            setF3( cl_e_frac_S3 );
 
         } else {
            setF0(0);
            setF1(0);
            setF2(0);
            setF3(0);
         }
 
      }
 
      return;
   }
 
} // namespace xAOD