TrackParticle_v1.cxx

Go to the documentation of this file.

/*
  Copyright (C) 2002-2024 CERN for the benefit of the ATLAS collaboration
*/
 
// Misc includes
#include <bitset>
#include <cassert>
#include <vector>
#include <stdexcept>
#include <atomic>
#include <iostream>
 
// EDM include(s):
#include "xAODCore/AuxStoreAccessorMacros.h"
 
// Local include(s):
#include "xAODTracking/versions/TrackParticle_v1.h"
#include "xAODTracking/TrackSummaryAccessors_v1.h"
#include "xAODTracking/TrackingDetails.h"
#include "EventPrimitives/EventPrimitivesHelpers.h"
#include "TruthUtils/ParticleConstants.h"
 
 
namespace xAODTrackParticlePrivate {

  void covarianceUnsetHook() {
    static std::atomic< bool > uninitCovarianceAccessPrinted = false;
    if( ! uninitCovarianceAccessPrinted ) {
      std::cout << "xAOD::TrackParticle WARNING Uninitialised covariance matrix was "
    "accessed.\n"
    "                        Debug it by breaking on "
    "xAODTrackParticlePrivate::covarianceUnsetHook function calls!"
        << std::endl;
      uninitCovarianceAccessPrinted = true;
    }
    return;
  }
 
}
 
 
namespace xAOD {
 
  TrackParticle_v1::TrackParticle_v1()
  : IParticle() {
    // perigeeParameters cache initialized to be empty (default constructor)
  }
 
  TrackParticle_v1::TrackParticle_v1(const TrackParticle_v1& tp )
  : IParticle( tp ) {
    makePrivateStore( tp );
    // perigeeParameters cache initialized to be empty (default constructor)
    // assume that this copy will create new cache as needed
  }
 
  TrackParticle_v1& TrackParticle_v1::operator=(const TrackParticle_v1& tp ){
    if(this == &tp) return *this;
 
    if( ( ! hasStore() ) && ( ! container() ) ) {
       makePrivateStore();
    }
    this->IParticle::operator=( tp );
#ifndef XAOD_ANALYSIS
    // assume that this copy will create new cache as needed
    m_perigeeParameters.reset();
#endif // not XAOD_ANALYSIS
    return *this;
  }
 
  TrackParticle_v1::~TrackParticle_v1(){}
 
  double TrackParticle_v1::pt() const {
    return genvecP4().Pt();
  }
 
  double TrackParticle_v1::eta() const {
    return genvecP4().Eta();
  }
 
  AUXSTORE_PRIMITIVE_GETTER_WITH_CAST(TrackParticle_v1,float,double,phi)
 
  double TrackParticle_v1::m() const {
    // Codes using a fitter set a hypothesis, and the
    // particular fitter that was employed..
    // A  mass is never set/stored.
    //
    // In the past we were returning the mass of a charged pion always
    //
    // This created a confusion on why TrackParticles created by
    // specific lepton fitter have a pion mass (the leptons per se have the
    // correct mass). Lets try to remedy this.
    uint8_t hypo = particleHypothesis();
    if (hypo == xAOD::electron) {
       // Since GX2 also set sometimes the hypo to electron
       // lets also check for GSF.
       uint8_t fitter = trackFitter();
       if (fitter == xAOD::GaussianSumFilter) {
         return ParticleConstants::electronMassInMeV;
       }
    }
    if (hypo == xAOD::muon) {
       return ParticleConstants::muonMassInMeV;
    }
    // default charged pion
    return ParticleConstants::chargedPionMassInMeV;
  }
 
  double TrackParticle_v1::e() const {
    return genvecP4().E();
  }
  double TrackParticle_v1::rapidity() const {
    return genvecP4().Rapidity();
  }
 
  TrackParticle_v1::GenVecFourMom_t TrackParticle_v1::genvecP4() const {
    return TrackingDetails::genvecP4(qOverP(), theta(), phi(), m());
  }
 
  TrackParticle_v1::FourMom_t TrackParticle_v1::p4() const {
    TrackParticle_v1::FourMom_t p4;
    using namespace std;
    float p = 10.e6; // 10 TeV (default value for very high pt muons, with qOverP==0)
    if (fabs(qOverP())>0.) p = 1/fabs(qOverP());
    float thetaT = theta();
    float phiT = phi();
    float sinTheta= sin(thetaT);
    float px = p*sinTheta*cos(phiT);
    float py = p*sinTheta*sin(phiT);
    float pz = p*cos(thetaT);
    float e  =  pow (m(),2) +
      pow( px,2) + pow( py,2) + pow( pz,2);
    p4.SetPxPyPzE( px, py, pz, sqrt(e) );
    return p4;
  }
 
  Type::ObjectType TrackParticle_v1::type() const {
     return Type::TrackParticle;
  }
 
  float TrackParticle_v1::charge() const {
    return TrackingDetails::charge (qOverP());
  }
 
  AUXSTORE_PRIMITIVE_GETTER(TrackParticle_v1, float, d0)
  AUXSTORE_PRIMITIVE_GETTER(TrackParticle_v1, float, z0)
 
  float TrackParticle_v1::phi0() const {
 
     static  const Accessor< float > acc( "phi" );
     return acc( *this );
  }
 
  AUXSTORE_PRIMITIVE_GETTER(TrackParticle_v1, float, theta)
  AUXSTORE_PRIMITIVE_GETTER(TrackParticle_v1, float, qOverP)
 
  AUXSTORE_PRIMITIVE_SETTER_AND_GETTER(TrackParticle_v1, float, time, setTime)
  AUXSTORE_PRIMITIVE_SETTER_AND_GETTER(TrackParticle_v1, float, timeResolution, setTimeResolution)
  AUXSTORE_PRIMITIVE_SETTER_AND_GETTER(TrackParticle_v1, uint8_t, hasValidTime, setHasValidTime )
 
  DefiningParameters_t TrackParticle_v1::definingParameters() const{
    DefiningParameters_t tmp;
    tmp << d0() , z0() , phi0() , theta() , qOverP();
    return tmp;
  }
 
  void TrackParticle_v1::setDefiningParameters(float d0, float z0, float phi0, float theta, float qOverP) {
#ifndef XAOD_ANALYSIS
    // reset perigee cache if existing
    if(m_perigeeParameters.isValid()) {
      m_perigeeParameters.reset();
    }
#endif // not XAOD_ANALYSIS
    static const Accessor< float > acc1( "d0" );
    acc1( *this ) = d0;
 
    static const Accessor< float > acc2( "z0" );
    acc2( *this ) = z0;
 
    static const Accessor< float > acc3( "phi" );
    acc3( *this ) = phi0;
 
    static const Accessor< float > acc4( "theta" );
    acc4( *this ) = theta;
 
    static const Accessor< float > acc5( "qOverP" );
    acc5( *this ) = qOverP;
 
    return;
  }
 
  void TrackParticle_v1::setDefiningParameters(float d0, float z0, float phi0, float theta, float qOverP, float time) {
    setDefiningParameters(d0, z0, phi0, theta, qOverP);
    setTime(time);
    return;
  }
 
  static const SG::AuxElement::Accessor< std::vector< float > >
    accCovMatrixDiag( "definingParametersCovMatrixDiag" );
  static const SG::AuxElement::Accessor< std::vector< float > >
    accCovMatrixOffDiag( "definingParametersCovMatrixOffDiag" );
 
  void TrackParticle_v1::setDefiningParametersCovMatrix(const xAOD::ParametersCovMatrix_t& cov){
 
#ifndef XAOD_ANALYSIS
    // reset perigee cache if existing
    if(m_perigeeParameters.isValid()) {
      m_perigeeParameters.reset();
    }
#endif // not XAOD_ANALYSIS
 
    // Extract the diagonal elements from the matrix.
    std::vector< float > diagVec;
    diagVec.reserve( cov.rows() );
    for( int i = 0; i < cov.rows(); ++i ) {
      diagVec.push_back( cov( i, i ) );
    }
    // Set the variable.
    setDefiningParametersCovMatrixDiagVec( diagVec );
 
    // Extract the off-diagonal elements from the matrix.
    std::vector< float > offDiagVec;
    offDiagVec.reserve( ( ( cov.rows() - 1 ) * cov.rows() ) / 2 );
    for( int i = 1; i < cov.rows(); ++i ) {
      for( int j = 0; j < i; ++j ) {
        float offDiagCoeff = (cov( i, i )>0 && cov( j, j )>0) ? cov( i, j )/sqrt(cov( i, i )*cov( j, j )) : 0;
        offDiagVec.push_back( offDiagCoeff );
      }
    }
    // Set the variable.
    setDefiningParametersCovMatrixOffDiagVec( offDiagVec );
 
    return;
  }
 
  const xAOD::ParametersCovMatrix_t TrackParticle_v1::definingParametersCovMatrix() const {
 
      std::span<const float> covMatrixDiag;
      if( accCovMatrixDiag.isAvailable( *this ))
        covMatrixDiag = std::span<const float>( accCovMatrixDiag( *this ) );
      std::span<const float> covMatrixOffDiag;
      if( accCovMatrixOffDiag.isAvailable( *this ))
        covMatrixOffDiag = std::span<const float>( accCovMatrixOffDiag( *this ) );
      bool valid = true;
      auto result = TrackingDetails::definingParametersCovMatrix( covMatrixDiag, covMatrixOffDiag, valid );
      if( !valid ) xAODTrackParticlePrivate::covarianceUnsetHook();
      return result;
  }
 
  ParametersCovMatrixFilled_t TrackParticle_v1::definingParametersCovMatrixFilled() const {
 
    // Create the result matrix.
    ParametersCovMatrixFilled_t result;
    result.setZero();
 
    // Check if the diagonal elements are available.
    if( accCovMatrixDiag.isAvailable( *this ) &&
        ( static_cast< int >( accCovMatrixDiag( *this ).size() ) == result.rows() ) ) {
 
      result.setIdentity();
    }
 
    bool offDiagCompr = definingParametersCovMatrixOffDiagCompr();
 
    if(!offDiagCompr){
 
      // Check if the off-diagonal elements are available.
      if( accCovMatrixOffDiag.isAvailable( *this ) &&
      ( static_cast< int >( accCovMatrixOffDiag( *this ).size() ) ==
        ( ( result.rows() * ( result.rows() - 1 ) ) / 2 ) ) ) {
 
    for( int i = 1; i < result.rows(); ++i ) {
      for( int j = 0; j < i; ++j ) {
        result.fillSymmetric( i, j, true );
      }
    }
      }
 
    }
 
    else{
 
      if( accCovMatrixOffDiag.isAvailable( *this ) &&
      ( static_cast< int >( accCovMatrixOffDiag( *this ).size() ) == COVMATRIX_OFFDIAG_VEC_COMPR_SIZE ) ){
 
    const covMatrixIndexPairVec& vecPairIndex = covMatrixComprIndexPairs();
 
    for(const auto& pairIndex : vecPairIndex){
      covMatrixIndex i = pairIndex.first;
      covMatrixIndex j = pairIndex.second;
      result.fillSymmetric( i, j, true );
    }
 
      }
 
    }
 
    // Return the object.
    return result;
  }
 
  const std::vector< float >& TrackParticle_v1::definingParametersCovMatrixDiagVec() const {
 
    return accCovMatrixDiag( *this );
  }
 
  const std::vector< float >& TrackParticle_v1::definingParametersCovMatrixOffDiagVec() const {
 
    return accCovMatrixOffDiag( *this );
  }
 
  std::vector<float> TrackParticle_v1::definingParametersCovMatrixVec() const {
 
    std::vector< float > vec;
    const AmgSymMatrix(5) cov = definingParametersCovMatrix();
    Amg::compress(cov,vec);
    return vec;
 
  }
 
  void TrackParticle_v1::setDefiningParametersCovMatrixDiagVec( const std::vector< float >& vec ) {
 
    if (vec.size() != ParametersCovMatrix_t::RowsAtCompileTime) {
      throw std::runtime_error(
        "Setting track definingParametersCovMatrixDiag with vector of size " +
        std::to_string(vec.size()) + " instead of expected " +
        std::to_string(ParametersCovMatrix_t::RowsAtCompileTime) +
        " is not supported");
    }
 
    accCovMatrixDiag( *this ) = vec;
    return;
  }
 
  void TrackParticle_v1::setDefiningParametersCovMatrixOffDiagVec( const std::vector< float >& vec ) {
 
    bool offDiagCompr = definingParametersCovMatrixOffDiagCompr();
 
    unsigned int uncompr_size = ( ( ( ParametersCovMatrix_t::RowsAtCompileTime - 1 ) *
                    ParametersCovMatrix_t::RowsAtCompileTime ) / 2 );
    unsigned int size = offDiagCompr ? COVMATRIX_OFFDIAG_VEC_COMPR_SIZE : uncompr_size;
 
    if( !(vec.size() == size || vec.size() == uncompr_size) ){ //If off-diagonal elements are already compressed, can either set with uncompressed or compressed vector
      throw std::runtime_error(
          "Setting track definingParametersCovMatrixOffDiag with vector of "
          "size " +
          std::to_string(vec.size()) + " instead of expected " +
          std::to_string(size) + " or " + std::to_string(uncompr_size) +
          " is not supported");
    }
 
    accCovMatrixOffDiag( *this ) = vec;
    return;
  }
 
  bool TrackParticle_v1::definingParametersCovMatrixOffDiagCompr() const {
 
    std::span<const float> covMatrixOffDiag;
    if( accCovMatrixOffDiag.isAvailable( *this ))
      covMatrixOffDiag = std::span<const float>( accCovMatrixOffDiag( *this ) );
    return TrackingDetails::definingParametersCovMatrixOffDiagCompr(covMatrixOffDiag);
  }
 
  void TrackParticle_v1::compressDefiningParametersCovMatrixOffDiag() {
 
    ParametersCovMatrix_t cov = definingParametersCovMatrix();
    std::vector< float > offDiagVecCompr;
    offDiagVecCompr.resize(COVMATRIX_OFFDIAG_VEC_COMPR_SIZE);
 
    const covMatrixIndexPairVec& vecPairIndex = covMatrixComprIndexPairs();
 
    for(unsigned int k=0; k<COVMATRIX_OFFDIAG_VEC_COMPR_SIZE; ++k){
      std::pair<covMatrixIndex,covMatrixIndex> pairIndex = vecPairIndex[k];
      covMatrixIndex i = pairIndex.first;
      covMatrixIndex j = pairIndex.second;
      float offDiagElement = cov(i,i)>0 && cov(j,j)>0 ? cov(i,j)/sqrt(cov(i,i)*cov(j,j)) : 0;
      offDiagVecCompr[k] = offDiagElement;
    }
 
    accCovMatrixOffDiag( *this ) = offDiagVecCompr;
    return;
 
  }
 
 
  //Old schema compatibility
 
  void TrackParticle_v1::setDefiningParametersCovMatrixVec(const std::vector<float>& cov){
 
    xAOD::ParametersCovMatrix_t covMatrix;
    if( !cov.empty() ) Amg::expand( cov.begin(), cov.end(),covMatrix );
    else covMatrix.setIdentity();
    setDefiningParametersCovMatrix( covMatrix );
 
  }
 
  AUXSTORE_PRIMITIVE_GETTER(TrackParticle_v1, float, vx)
  AUXSTORE_PRIMITIVE_GETTER(TrackParticle_v1, float, vy)
  AUXSTORE_PRIMITIVE_GETTER(TrackParticle_v1, float, vz)
 
  void TrackParticle_v1::setParametersOrigin(float x, float y, float z){
    static const Accessor< float > acc1( "vx" );
    acc1( *this ) = x;
 
    static const Accessor< float > acc2( "vy" );
    acc2( *this ) = y;
 
    static const Accessor< float > acc3( "vz" );
    acc3( *this ) = z;
  }
 
#ifndef XAOD_ANALYSIS
  const Trk::Perigee& TrackParticle_v1::perigeeParameters() const {
 
    // Require the cache to be valid and check if the cached pointer has been set
    if(m_perigeeParameters.isValid()){
      return *(m_perigeeParameters.ptr());
    }
    static const Accessor< float > acc1( "d0" );
    static const Accessor< float > acc2( "z0" );
    static const Accessor< float > acc3( "phi" );
    static const Accessor< float > acc4( "theta" );
    static const Accessor< float > acc5( "qOverP" );
    static const Accessor< std::vector<float> > acc6( "definingParametersCovMatrix" );
    ParametersCovMatrix_t cov = ParametersCovMatrix_t(definingParametersCovMatrix());
    static const Accessor< float > acc7( "beamlineTiltX" );
    static const Accessor< float > acc8( "beamlineTiltY" );
 
    if(!acc7.isAvailable( *this ) || !acc8.isAvailable( *this )){
      Trk::Perigee tmpPerigeeParameters(
        acc1(*this),
        acc2(*this),
        acc3(*this),
        acc4(*this),
        acc5(*this),
        Trk::PerigeeSurface(Amg::Vector3D(vx(), vy(), vz())),
        std::move(cov));
      m_perigeeParameters.set(tmpPerigeeParameters);
      return *(m_perigeeParameters.ptr());
    }
 
    Amg::Translation3D amgtranslation(vx(),vy(),vz());
    Amg::Transform3D pAmgTransf = amgtranslation * Amg::RotationMatrix3D::Identity();
    pAmgTransf *= Amg::AngleAxis3D(acc8(*this), Amg::Vector3D(0.,1.,0.));
    pAmgTransf *= Amg::AngleAxis3D(acc7(*this), Amg::Vector3D(1.,0.,0.));
    Trk::Perigee tmpPerigeeParameters(acc1(*this),
                                      acc2(*this),
                                      acc3(*this),
                                      acc4(*this),
                                      acc5(*this),
                                      pAmgTransf,
                                      std::move(cov));
 
    m_perigeeParameters.set(tmpPerigeeParameters);
    return *(m_perigeeParameters.ptr());
  }
#endif // not XAOD_ANALYSIS
 
  AUXSTORE_PRIMITIVE_GETTER(TrackParticle_v1, float, chiSquared)
  AUXSTORE_PRIMITIVE_GETTER(TrackParticle_v1, float, numberDoF)
 
  void TrackParticle_v1::setFitQuality(float chiSquared, float numberDoF){
    static const Accessor< float > acc1( "chiSquared" );
    acc1( *this ) = chiSquared;
    static const Accessor< float > acc2( "numberDoF" );
    acc2( *this ) = numberDoF;
  }
 
  AUXSTORE_PRIMITIVE_SETTER_AND_GETTER(TrackParticle_v1, float, radiusOfFirstHit, setRadiusOfFirstHit)
  AUXSTORE_PRIMITIVE_SETTER_AND_GETTER(TrackParticle_v1, uint64_t, identifierOfFirstHit, setIdentifierOfFirstHit)
 
  AUXSTORE_PRIMITIVE_SETTER_AND_GETTER(TrackParticle_v1, float, beamlineTiltX, setBeamlineTiltX)
  AUXSTORE_PRIMITIVE_SETTER_AND_GETTER(TrackParticle_v1, float, beamlineTiltY, setBeamlineTiltY)
 
  AUXSTORE_PRIMITIVE_SETTER_AND_GETTER(TrackParticle_v1, uint32_t, hitPattern, setHitPattern)
 
  AUXSTORE_PRIMITIVE_SETTER_AND_GETTER(TrackParticle_v1, uint8_t,numberOfUsedHitsdEdx ,setNumberOfUsedHitsdEdx )
 
   AUXSTORE_PRIMITIVE_SETTER_AND_GETTER(TrackParticle_v1, uint8_t,numberOfIBLOverflowsdEdx , setNumberOfIBLOverflowsdEdx)
 
  size_t TrackParticle_v1::numberOfParameters() const{
    static const Accessor< std::vector<uint8_t>  > acc( "parameterPosition" );
    if(! acc.isAvailable( *this )) return 0;
    return acc(*this).size();
  }
 
  const CurvilinearParameters_t TrackParticle_v1::trackParameters(unsigned int index) const{
    CurvilinearParameters_t tmp;
    tmp << parameterX(index),parameterY(index),parameterZ(index),
      parameterPX(index),parameterPY(index),parameterPZ(index);
    return tmp;
  }
 
  void TrackParticle_v1::setTrackParameters(std::vector<std::vector<float> >& parameters){
    static const Accessor< std::vector < float > > acc1( "parameterX" );
    static const Accessor< std::vector < float > > acc2( "parameterY" );
    static const Accessor< std::vector < float > > acc3( "parameterZ" );
    static const Accessor< std::vector < float > > acc4( "parameterPX" );
    static const Accessor< std::vector < float > > acc5( "parameterPY" );
    static const Accessor< std::vector < float > > acc6( "parameterPZ" );
    static const Accessor< std::vector<uint8_t>  > acc7( "parameterPosition" );
 
    acc1(*this).resize(parameters.size());
    acc2(*this).resize(parameters.size());
    acc3(*this).resize(parameters.size());
    acc4(*this).resize(parameters.size());
    acc5(*this).resize(parameters.size());
    acc6(*this).resize(parameters.size());
    acc7(*this).resize(parameters.size());
 
    unsigned int index=0;
    std::vector<std::vector<float> >::const_iterator it=parameters.begin(), itEnd=parameters.end();
    for (;it!=itEnd;++it,++index){
      assert((*it).size()==6);
      acc1(*this).at(index)=(*it).at(0);
      acc2(*this).at(index)=(*it).at(1);
      acc3(*this).at(index)=(*it).at(2);
      acc4(*this).at(index)=(*it).at(3);
      acc5(*this).at(index)=(*it).at(4);
      acc6(*this).at(index)=(*it).at(5);
    }
  }
 
  float TrackParticle_v1::parameterX(unsigned int index) const  {
    static const Accessor< std::vector<float>  > acc( "parameterX" );
    return acc(*this).at(index);
  }
 
  float TrackParticle_v1::parameterY(unsigned int index) const  {
    static const Accessor< std::vector<float>  > acc( "parameterY" );
    return acc(*this).at(index);
  }
 
  float TrackParticle_v1::parameterZ(unsigned int index) const  {
    static const Accessor< std::vector<float>  > acc( "parameterZ" );
    return acc(*this).at(index);
  }
 
  float TrackParticle_v1::parameterPX(unsigned int index) const {
    static const Accessor< std::vector<float>  > acc( "parameterPX" );
    return acc(*this).at(index);
  }
 
  float TrackParticle_v1::parameterPY(unsigned int index) const {
    static const Accessor< std::vector<float>  > acc( "parameterPY" );
    return acc(*this).at(index);
  }
 
  float TrackParticle_v1::parameterPZ(unsigned int index) const {
    static const Accessor< std::vector<float>  > acc( "parameterPZ" );
    return acc(*this).at(index);
  }
 
  xAOD::ParametersCovMatrix_t TrackParticle_v1::trackParameterCovarianceMatrix(unsigned int index) const
  {
    static const Accessor< std::vector<float>  > acc( "trackParameterCovarianceMatrices" );
    unsigned int offset = index*15;
    // copy the correct values into the temp matrix
    xAOD::ParametersCovMatrix_t tmp;
    std::vector<float>::const_iterator it = acc(*this).begin()+offset;
    Amg::expand(it,it+15,tmp);
    return tmp;
  }
 
  void TrackParticle_v1::setTrackParameterCovarianceMatrix(unsigned int index, std::vector<float>& cov){
    assert(cov.size()==15);
    unsigned int offset = index*15;
    static const Accessor< std::vector < float > > acc( "trackParameterCovarianceMatrices" );
    std::vector<float>& v = acc(*this);
    v.resize(offset+15);
    std::copy(cov.begin(),cov.end(),v.begin()+offset );
  }
 
  xAOD::ParameterPosition TrackParticle_v1::parameterPosition(unsigned int index) const
  {
    static const Accessor< std::vector<uint8_t>  > acc( "parameterPosition" );
    return static_cast<xAOD::ParameterPosition>(acc(*this).at(index));
  }
 
  bool TrackParticle_v1::indexOfParameterAtPosition(unsigned int& index, ParameterPosition position) const
  {
    size_t maxParameters = numberOfParameters();
    bool foundParameters=false;
    for (size_t i=0; i<maxParameters; ++i){
      if (parameterPosition(i)==position){
        foundParameters=true;
        index=i;
        break;
      }
    }
    return foundParameters;
  }
 
  void  TrackParticle_v1::setParameterPosition(unsigned int index, xAOD::ParameterPosition pos){
    static const Accessor< std::vector<uint8_t>  > acc( "parameterPosition" );
    acc( *this ).at(index) = static_cast<uint8_t>(pos);
  }
 
#ifndef XAOD_ANALYSIS
  const Trk::CurvilinearParameters TrackParticle_v1::curvilinearParameters(unsigned int index) const {
 
    static const Accessor< std::vector<float>  > acc( "trackParameterCovarianceMatrices" );
    unsigned int offset = index*15;
    // copy the correct values into the temp matrix
    ParametersCovMatrix_t cov;
    auto it = acc(*this).begin()+offset;
    Amg::expand(it,it+15,cov);
    // retrieve the parameters to build the curvilinear frame
    Amg::Vector3D pos(parameterX(index),parameterY(index),parameterZ(index));
    Amg::Vector3D mom(parameterPX(index),parameterPY(index),parameterPZ(index));
    Trk::CurvilinearParameters param(pos,mom,charge(),std::move(cov));
 
    return param;
  }
#endif // not XAOD_ANALYSIS
 
  AUXSTORE_PRIMITIVE_GETTER_WITH_CAST(TrackParticle_v1, uint8_t, xAOD::TrackProperties,trackProperties)
  AUXSTORE_PRIMITIVE_SETTER_WITH_CAST(TrackParticle_v1, uint8_t, xAOD::TrackProperties,trackProperties, setTrackProperties)
 
  void TrackParticle_v1::setTrackFitter(xAOD::TrackFitter value) {
    static const Accessor<uint8_t> acc("trackFitter");
    acc(*this) = static_cast<uint8_t>(value);
  }
 
  xAOD::TrackFitter TrackParticle_v1::trackFitter() const {
    static const Accessor<uint8_t> acc("trackFitter");
    if (!acc.isAvailable(*this)) {
      return xAOD::NumberOfTrackFitters;
    }
    return static_cast<xAOD::TrackFitter>(acc(*this));
  }
 
  std::bitset<xAOD::NumberOfTrackRecoInfo> TrackParticle_v1::patternRecoInfo()
      const {
    static const Accessor< uint64_t > acc( "patternRecoInfo" );
    std::bitset<xAOD::NumberOfTrackRecoInfo> tmp(acc(*this));
    return tmp;
  }
 
  void TrackParticle_v1::setPatternRecognitionInfo(uint64_t patternReco)  {
    static const Accessor< uint64_t > acc( "patternRecoInfo" );
    acc( *this ) = patternReco;
  }
 
  void TrackParticle_v1::setPatternRecognitionInfo(const std::bitset<xAOD::NumberOfTrackRecoInfo>& patternReco)  {
    static const Accessor< uint64_t > acc( "patternRecoInfo" );
    acc( *this ) = patternReco.to_ullong();
  }
 
  void TrackParticle_v1::setParticleHypothesis(xAOD::ParticleHypothesis value) {
    static const Accessor<uint8_t> acc("particleHypothesis");
    acc(*this) = static_cast<uint8_t>(value);
  }
 
  xAOD::ParticleHypothesis TrackParticle_v1::particleHypothesis() const {
    static const Accessor<uint8_t> acc("particleHypothesis");
    if (!acc.isAvailable(*this)) {
      return xAOD::pion;
    }
    return static_cast<xAOD::ParticleHypothesis>(acc(*this));
  }
 
  bool TrackParticle_v1::summaryValue(uint8_t& value, const SummaryType &information)  const {
    const xAOD::TrackParticle_v1::Accessor< uint8_t >* acc = trackSummaryAccessorV1<uint8_t>( information );
    if( ( ! acc ) || ( ! acc->isAvailable( *this ) ) ) return false;
  // Retrieve the value:
    value = ( *acc )( *this );
    return true;
  }
 
  bool TrackParticle_v1::summaryValue(float& value, const SummaryType &information)  const {
    const xAOD::TrackParticle_v1::Accessor< float >* acc = trackSummaryAccessorV1<float>( information );
    if( ( ! acc ) || ( ! acc->isAvailable( *this ) ) ) return false;
  // Retrieve the value:
    value = ( *acc )( *this );
    return true;
  }
 
  void TrackParticle_v1::setSummaryValue(uint8_t& value, const SummaryType &information){
    const xAOD::TrackParticle_v1::Accessor< uint8_t >* acc = trackSummaryAccessorV1<uint8_t>( information );
  // Set the value:
    ( *acc )( *this ) = value;
  }
 
  void TrackParticle_v1::setSummaryValue(float& value, const SummaryType &information){
    const xAOD::TrackParticle_v1::Accessor< float >* acc = trackSummaryAccessorV1<float>( information );
  // Set the value:
    ( *acc )( *this ) = value;
  }
 
  const TrackParticle_v1::covMatrixIndexPairVec& TrackParticle_v1::covMatrixComprIndexPairs(){
    static const covMatrixIndexPairVec result (TrackingDetails::covMatrixComprIndexPairs.begin(),
                 TrackingDetails::covMatrixComprIndexPairs.end());
    return result;
  }
 
 
#ifndef XAOD_ANALYSIS
   const ElementLink< TrackCollection >& TrackParticle_v1::trackLink() const {
 
      // The accessor:
      static const ConstAccessor< ElementLink< TrackCollection > > acc( "trackLink" );
 
      // Check if one of them is available:
      if( acc.isAvailable( *this ) ) {
         return acc( *this );
      }
 
      // If no Trk::Track link was not set (yet), return a dummy object:
      static const ElementLink< TrackCollection > dummy;
      return dummy;
   }
 
   void TrackParticle_v1::
   setTrackLink( const ElementLink< TrackCollection >& el ) {
 
      // The accessor:
      static const Accessor< ElementLink< TrackCollection > > acc( "trackLink" );
 
      // Do the deed:
      acc( *this ) = el;
      return;
   }
 
   const Trk::Track* TrackParticle_v1::track() const{
 
      // The accessor:
      static const ConstAccessor< ElementLink< TrackCollection > > acc( "trackLink" );
 
      if( ! acc.isAvailable( *this ) ) {
         return nullptr;
      }
      if( ! acc( *this ).isValid() ) {
         return nullptr;
      }
 
      return *( acc( *this ) );
   }
#endif // not XAOD_ANALYSIS
 
   void TrackParticle_v1::resetCache(){
#ifndef XAOD_ANALYSIS
     m_perigeeParameters.reset();
#endif // not XAOD_ANALYSIS
   }
 
} // namespace xAOD