IHGTD_ExpertTrackTimeAccessor.h

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#ifndef IHGTD_EXPERTTRACKTIMEACCESSOR_H
#define IHGTD_EXPERTTRACKTIMEACCESSOR_H
 
#include "GaudiKernel/IAlgTool.h"
#include "GaudiKernel/PhysicalConstants.h"
#include "xAODTracking/TrackParticle.h"
#include "xAODTruth/TruthParticle.h"
#include "xAODTruth/TruthVertex.h"
#include "xAODTruth/xAODTruthHelpers.h"
 
class MsgStream;
 
class IHGTD_ExpertTrackTimeAccessor : virtual public IAlgTool {
 
public:
  DeclareInterfaceID(IHGTD_ExpertTrackTimeAccessor, 1, 0);

  virtual bool
  expertHasTime(const xAOD::TrackParticle& track_particle) const = 0;

  virtual float
  expertTime(const xAOD::TrackParticle& track_particle) const = 0;

  virtual float
  expertTimeRes(const xAOD::TrackParticle& track_particle) const = 0;

  virtual float
  fracPrimaryHits(const xAOD::TrackParticle& track_particle) const = 0;

  virtual int numberPotentialPrimaryHits(
      const xAOD::TrackParticle& track_particle) const = 0;

  virtual float getTruthTime(const xAOD::TruthParticle& truth_particle) const {
    float truth_time = -999.;
    auto production_vx = truth_particle.prodVtx();
    if (production_vx) {
      truth_time = production_vx->t() / Gaudi::Units::c_light;
    }
    return truth_time;
  };
 
  virtual float getTruthTime(const xAOD::TrackParticle& track_particle) const {
    float truth_time = -999.;
    auto truth_ptcl = xAOD::TruthHelpers::getTruthParticle(track_particle);
    if (truth_ptcl) {
      auto production_vx = truth_ptcl->prodVtx();
      if (production_vx) {
        truth_time = production_vx->t() / Gaudi::Units::c_light;
      }
    }
    return truth_time;
  }
 
  virtual float getTruthTime(const xAOD::TruthVertex& truth_vertex) const {
    return truth_vertex.t() / Gaudi::Units::c_light;
  }
};
 
#endif // IHGTD_EXPERTTRACKTIMEACCESSOR_H