Track candidate – seed values and indices. More...

#include <TrackCand.h>

Inheritance diagram for TrackCand:

Collaboration diagram for TrackCand:

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Public Member Functions
	TrackCand (const TrackCand &other)
	copy constructor

TrackCand &	operator= (TrackCand other)
	assignment operator

void	swap (TrackCand &other)

TrackCandHit *	getHit (int i) const

void	getHit (int i, int &detId, int &hitId) const
	Get detector Id and hit Id for hit number i.

void	getHit (int i, int &detId, int &hitId, double &sortingParameter) const
	Get detector Id, hit Id and sorting parameter for hit number i.

void	getHitWithPlane (int i, int &detId, int &hitId, int &planeId) const
	Get detector Id, hit Id and plane id for hit number i.

unsigned int	getNHits () const

std::vector< int >	getHitIDs (int detId=-2) const
	Get hit ids of from a specific detector. More...

std::vector< int >	getDetIDs () const
	Get detector IDs of all hits.

std::vector< double >	getSortingParameters () const
	Get sorting parameterts of all hits.

std::set< int >	getUniqueDetIDs () const

int	getMcTrackId () const
	Get the MCT track id, for MC simulations - default value = -1.

double	getTimeSeed () const
	Get the time at which the seed state is defined.

TVector3	getPosSeed () const
	get the seed value for track: pos. More...

TVector3	getMomSeed () const
	get the seed value for track: mom. More...

const TMatrixDSym &	getCovSeed () const
	get the covariance matrix seed (6D). More...

const TVectorD &	getStateSeed () const
	Returns the 6D seed state; should be in global coordinates.

double	getChargeSeed () const

int	getPdgCode () const
	Get the PDG code.

bool	hitInTrack (int detId, int hitId) const
	Is there a hit with detId and hitId in the TrackCand?

void	addHit (int detId, int hitId, int planeId=-1, double sortingParameter=0)

void	addHit (TrackCandHit *hit)

void	setMcTrackId (int i)
	Set the MCT track id, for MC simulations.

void	setPdgCode (int pdgCode)
	Set a particle hypothesis in form of a PDG code. This will also set the charge attribute.

void	append (const TrackCand &)
	Clone the TrackCandHit objects from the other TrackCand and append them to this TrackCand.

void	sortHits ()
	Sort the hits that were already added to the trackCand using the sorting parameters.

void	sortHits (const std::vector< unsigned int > &indices)

void	reset ()
	Delete and clear the TrackCandHits.

void	Print (const Option_t *="") const
	Write the content of all private attributes to the terminal.

void	setTimeSeed (double time)
	Set the time at which the seed is defined.

void	setCovSeed (const TMatrixDSym &cov6D)
	set the covariance matrix seed (6D). More...

void	set6DSeed (const TVectorD &state6D, const double charge)
	sets the state to seed the track fitting. More...

void	set6DSeedAndPdgCode (const TVectorD &state6D, const int pdgCode)
	This function works the same as set6DSeed but instead of a charge hypothesis you can set a pdg code which will set the charge automatically.

void	setPosMomSeed (const TVector3 &pos, const TVector3 &mom, const double charge)
	sets the state to seed the track fitting. More...

void	setPosMomSeedAndPdgCode (const TVector3 &pos, const TVector3 &mom, const int pdgCode)
	This function works the same as setPosMomSeed but instead of a charge hypothesis you can set a pdg code which will set the charge automatically.

void	setTime6DSeed (double time, const TVectorD &state6D, const double charge)
	sets the state to seed the track fitting and its time. More...

void	setTime6DSeedAndPdgCode (double time, const TVectorD &state6D, const int pdgCode)
	This function works the same as set6DSeed but instead of a charge hypothesis you can set a pdg code which will set the charge automatically.

void	setTimePosMomSeed (double time, const TVector3 &pos, const TVector3 &mom, const double charge)
	sets the state to seed the track fitting and its time. More...

void	setTimePosMomSeedAndPdgCode (double time, const TVector3 &pos, const TVector3 &mom, const int pdgCode)
	This function works the same as setPosMomSeed but instead of a charge hypothesis you can set a pdg code which will set the charge automatically.

Static Public Member Functions
static bool	compareTrackCandHits (const TrackCandHit lhs, const TrackCandHit rhs)

Private Attributes
std::vector< TrackCandHit * >	hits_

int	mcTrackId_
	if MC simulation, store the mc track id here

int	pdg_
	particle data groupe's id for a particle

double	time_
	Time at which the seed is given.

TVectorD	state6D_
	global 6D position plus momentum state

TMatrixDSym	cov6D_
	global 6D position plus momentum state

double	q_
	the charge of the particle in units of elementary charge

Friends
bool	operator== (const TrackCand &lhs, const TrackCand &rhs)
	== operator checks equality of TrackCandHits. Does not check for sorting parameters.

bool	operator!= (const TrackCand &lhs, const TrackCand &rhs)

Detailed Description

Track candidate – seed values and indices.

Author: Christian Höppner (Technische Universität München, original author); Sebastian Neubert (Technische Universität München, original author); Moritz Nadler (maintainer during 2012)

The main task of the TrackCand object is to store a list of indices to cluster objects. Each cluster in the Track is identified by it's detector ID and it's index in the corresponding TClonesArray. Also there is a ordering parameter to order hits. Optionally, plane indices for the hits can be stored (most importantly for fitting with the Daf). This information is used by the RecoHitFactory to automatically load RecoHits into a Track. Through this it is possible to define Tracks over an arbitrary number of different detectors.

In addition TrackCand offers members to store starting values for the fit. The starting values (seeds) for the fit are stored as a 6D state (x,y,z,px,py,pz) and its corresponding 6x6 covariance matrix. All seed getter and setter manipulate these two members but the user can chose using TVector3 or TMatrixD to get/set the seed state. However this information is not automatically used in genfit. But a pointer to a TrackCand can be passed to the a RKTrackRep constructor to make use of this information without manually extracting it from the TrackCand object.

See also: RecoHitFactory

Definition at line 69 of file TrackCand.h.

Member Function Documentation

◆ getCovSeed()

const TMatrixDSym& getCovSeed ( ) const

inline

get the covariance matrix seed (6D).

Definition at line 131 of file TrackCand.h.

131 {return cov6D_;}

genfit::TrackCand::cov6D_

TMatrixDSym cov6D_

global 6D position plus momentum state

Definition: TrackCand.h:235

◆ getHitIDs()

std::vector< int > getHitIDs ( int detId = -2 ) const

Get hit ids of from a specific detector.

DetId -1 gives hitIds of hits with default detId -1. The default argument -2 gives hit Ids of all hits.

Definition at line 130 of file TrackCand.cc.

                                                    {
   std::vector<int> result;
   for(unsigned int i=0; i<hits_.size(); ++i){
     if(detId==-2 || hits_[i]->getDetId() == detId) {
       result.push_back(hits_[i]->getHitId());
     }
   }
   return result;
 }

◆ getMomSeed()

TVector3 getMomSeed ( ) const

inline

get the seed value for track: mom.

Identical to the last 3 components of getStateSeed

Definition at line 128 of file TrackCand.h.

◆ getPosSeed()

TVector3 getPosSeed ( ) const

inline

get the seed value for track: pos.

Identical to the first 3 components of getStateSeed

Definition at line 125 of file TrackCand.h.

◆ set6DSeed()

void set6DSeed	(	const TVectorD &	state6D,
		const double	charge
	)

sets the state to seed the track fitting.

State has to be a TVectorD(6). First 3 elements are the staring postion second 3 elements the starting momentum. Everything in global coordinates charge is the charge hypotheses of the particle charge

Definition at line 246 of file TrackCand.cc.

◆ setCovSeed()

void setCovSeed ( const TMatrixDSym & cov6D )

inline

set the covariance matrix seed (6D).

Definition at line 175 of file TrackCand.h.

◆ setPosMomSeed()

void setPosMomSeed	(	const TVector3 &	pos,
		const TVector3 &	mom,
		const double	charge
	)

sets the state to seed the track fitting.

State has to be a TVector3 for position and a TVector3 for momentum. Everything in global coordinates charge is the charge hypotheses of the particle charge

Definition at line 258 of file TrackCand.cc.

◆ setTime6DSeed()

void setTime6DSeed	(	double	time,
		const TVectorD &	state6D,
		const double	charge
	)

sets the state to seed the track fitting and its time.

State has to be a TVectorD(6). First 3 elements are the staring postion second 3 elements the starting momentum. Everything in global coordinates charge is the charge hypotheses of the particle charge.

Definition at line 273 of file TrackCand.cc.

◆ setTimePosMomSeed()

void setTimePosMomSeed	(	double	time,
		const TVector3 &	pos,
		const TVector3 &	mom,
		const double	charge
	)

sets the state to seed the track fitting and its time.

State has to be a TVector3 for position and a TVector3 for momentum. Everything in global coordinates charge is the charge hypotheses of the particle charge.

Definition at line 285 of file TrackCand.cc.

The documentation for this class was generated from the following files:

genfit2/code2/core/include/TrackCand.h
genfit2/code2/core/src/TrackCand.cc

Public Member Functions

Static Public Member Functions

Private Attributes

Friends

Detailed Description

Member Function Documentation

◆ getCovSeed()

◆ getHitIDs()

◆ getMomSeed()

◆ getPosSeed()

◆ set6DSeed()

◆ setCovSeed()

◆ setPosMomSeed()

◆ setTime6DSeed()

◆ setTimePosMomSeed()