SeedFromConsecutiveHitsStraightLineCreator Class Reference

#include <SeedFromConsecutiveHitsStraightLineCreator.h>

Inheritance diagram for SeedFromConsecutiveHitsStraightLineCreator:

Public Member Functions
	SeedFromConsecutiveHitsStraightLineCreator (const edm::ParameterSet &cfg, edm::ConsumesCollector &&iC)
	~SeedFromConsecutiveHitsStraightLineCreator () override
Public Member Functions inherited from SeedFromConsecutiveHitsCreator
void	init (const TrackingRegion &region, const edm::EventSetup &es, const SeedComparitor *filter) final
void	makeSeed (TrajectorySeedCollection &seedCollection, const SeedingHitSet &hits) final
	SeedFromConsecutiveHitsCreator (const edm::ParameterSet &, edm::ConsumesCollector &&)
	~SeedFromConsecutiveHitsCreator () override
Public Member Functions inherited from SeedCreator
virtual	~SeedCreator ()

Private Member Functions
bool	initialKinematic (GlobalTrajectoryParameters &kine, const SeedingHitSet &hits) const override

Additional Inherited Members
Static Public Member Functions inherited from SeedFromConsecutiveHitsCreator
static void	fillDescriptions (edm::ParameterSetDescription &desc)
static const char *	fillDescriptionsLabel ()
Protected Attributes inherited from SeedFromConsecutiveHitsCreator
TkClonerImpl	cloner
const SeedComparitor *	filter = nullptr
bool	forceKinematicWithRegionDirection_
bool	isBOFF = false
MagneticField const *	magneticField_
const edm::ESGetToken< MagneticField, IdealMagneticFieldRecord >	magneticFieldESToken_
std::string	mfName_
float	nomField
Propagator const *	propagator_
const edm::ESGetToken< Propagator, TrackingComponentsRecord >	propagatorESToken_
const TrackingRegion *	region = nullptr
float	theBOFFMomentum
float	theMinOneOverPtError
float	theOriginTransverseErrorMultiplier
std::string	thePropagatorLabel
TrackerGeometry const *	trackerGeometry_
const edm::ESGetToken< TrackerGeometry, TrackerDigiGeometryRecord >	trackerGeometryESToken_
const edm::ESGetToken< TransientTrackingRecHitBuilder, TransientRecHitRecord >	transientTrackingRecHitBuilderESToken_
std::string	TTRHBuilder

Detailed Description

Definition at line 10 of file SeedFromConsecutiveHitsStraightLineCreator.h.

Constructor & Destructor Documentation

SeedFromConsecutiveHitsStraightLineCreator()

SeedFromConsecutiveHitsStraightLineCreator::SeedFromConsecutiveHitsStraightLineCreator ( const edm::ParameterSet &  cfg, edm::ConsumesCollector &&  iC  )

inline

Definition at line 12 of file SeedFromConsecutiveHitsStraightLineCreator.h.

      : SeedFromConsecutiveHitsCreator(cfg, std::move(iC)) {}

~SeedFromConsecutiveHitsStraightLineCreator()

SeedFromConsecutiveHitsStraightLineCreator::~SeedFromConsecutiveHitsStraightLineCreator ( )

inlineoverride

Definition at line 15 of file SeedFromConsecutiveHitsStraightLineCreator.h.

{}

Member Function Documentation

initialKinematic()

bool SeedFromConsecutiveHitsStraightLineCreator::initialKinematic ( GlobalTrajectoryParameters &  kine, const SeedingHitSet &  hits  ) const

overrideprivatevirtual

Reimplemented from SeedFromConsecutiveHitsCreator.

Definition at line 4 of file SeedFromConsecutiveHitsStraightLineCreator.cc.

References hfClusterShapes_cfi::hits, SeedFromConsecutiveHitsCreator::magneticField_, TrackingRegion::origin(), PV3DBase< T, PVType, FrameType >::perp(), submitPVResolutionJobs::q, and SeedFromConsecutiveHitsCreator::region.

                                                                                                   {
  const SeedingHitSet::ConstRecHitPointer& tth1 = hits[0];
  const SeedingHitSet::ConstRecHitPointer& tth2 = hits[1];

  const GlobalPoint& vertexPos = region->origin();

  // Assume initial state is straight line passing through beam spot
  // with direction given by innermost two seed hits (with big uncertainty)
  GlobalVector initMomentum(tth2->globalPosition() - tth1->globalPosition());
  double rescale = 1000. / initMomentum.perp();
  initMomentum *= rescale;  // set to approximately infinite momentum
  TrackCharge q = 1;        // irrelevant, since infinite momentum
  kine = GlobalTrajectoryParameters(vertexPos, initMomentum, q, magneticField_);

  return true;
}