StiKalmanTrack Class Reference

Definition of Kalman Track. More...

#include <StiKalmanTrack.h>

Inheritance diagram for StiKalmanTrack:

List of all members.

Public Types

enum TRefitStatus {
kNoErrors = 0, kRefitFail, kNotEnoughUsed, kInNodeNotValid,
kBadQA, kVertexNodeInvalid, kNodeNotValid, kTooManyDroppedNodes
}

Public Member Functions

StiKalmanTrack ()

virtual ~StiKalmanTrack ()

void reset ()

void unset ()

void getMomentum (double p[3], double e[6]) const

Calculates and returns the momentum and error of the track.

double getP () const

Calculates and returns the momentum of the track at the inner most node.

double getPt () const

Calculates and returns the transverse momentum of the track at the inner most node.

double getCurvature () const

Return the curvature of the track at its inner most point.

double getRapidity () const

Return the rapidity of the track if the mass is known.

double getPseudoRapidity () const

Return the pseudorapidity of the track.

double getPhi () const

Return azimuthal angle at inner most point of the track.

double getTanL () const

Returns the tangent of the dip angle of the track determined at the inner most point of the track.

double getDca () const

virtual double getDca (const StiHit *vertex) const

Return global dca of the track relative to given vertex or point.

void setDca (double dca)

double getDca (StiTrack *t) const

int getPointCount (int detectorId=0) const

Return the number of hits associated with this track.

int getFitPointCount (int detectorId=0) const

Returns the number of hits associated and used in the fit of this track.

void getAllPointCount (int count[1][3], int maxDetId) const

Returns all the PointCount far all detectors and types of nodes.

int getGapCount () const

Return the number of gaps on this track.

double getTrackLength () const

double getNearBeam (StThreeVectorD *pnt=0, StThreeVectorD *dir=0) const

int getMaxPointCount (int detectorId=0) const

UShort_t getSeedHitCount () const

number of hits used to seed the track

void setSeedHitCount (UShort_t c)

int isPrimary () const

void setPrimary (int vertex)

double calculateTrackLength () const

double calculateTrackSegmentLength (const StiKalmanTrackNode &p1, const StiKalmanTrackNode &p2) const

double getTrackRadLength () const

int calculatePointCount () const

int calculateMaxPointCount () const

double getTpcDedx () const

double getSvtDedx () const

StiKTNBidirectionalIterator begin () const

const StiKTNBidirectionalIterator & end () const

StiKTNBidirectionalIterator rbegin () const

const StiKTNBidirectionalIterator & rend () const

void removeLastNode ()

StiKalmanTrackNode * getInnOutMostNode (int inot, int qua) const

Same for getNNodes(qua).

StiKalmanTrackNode * getOuterMostNode (int qua=0) const

Accessor method returns the outer most node associated with the track.

StiKalmanTrackNode * getInnerMostNode (int qua=0) const

Accessor method returns the inner most node associated with the track.

StiKalmanTrackNode * getOuterMostHitNode (int qua=0) const

Accessor method returns the outer most hit node associated with the track.

StiKalmanTrackNode * getInnerMostHitNode (int qua=0) const

Accessor method returns the inner most hit node associated with the track.

int getNNodes (int qua=0) const

int releaseHits (double rMin=4, double rMax=50)

StiKalmanTrackNode * getFirstNode () const

Accessor method returns the first node associated with the track.

StiKalmanTrackNode * getLastNode () const

Accessor method returns the last node associated with the track.

void setLastNode (StiKalmanTrackNode *n)

void setFirstNode (StiKalmanTrackNode *n)

void setFirstLastNode (StiKalmanTrackNode *n)

virtual void add (StiTrackNode *node, int direction)

int initialize (const vector< StiHit * > &)

Convenience method to initialize a track based on seed information.

StThreeVector< double > getMomentumAtOrigin () const

Method to return the pointer to the fitter parameters.

StThreeVector< double > getPoint (int firstLast=0) const

virtual vector< StiHit * > getHits ()

virtual vector< const
StMeasuredPoint * > stHits () const

return hits;

virtual vector
< StiKalmanTrackNode * > getNodes (int detectorGroupId) const

return vector of nodes with hits

double getMass () const

int getCharge () const

double getChi2 () const

double getDca2 (StiTrack *t) const

double getDca3 (StiTrack *t) const

bool find (int direction=kOutsideIn)

int refit ()

int refitL ()

void reserveHits ()

StiTrackNode * extendToVertex (StiHit *vertex)

void setFlag (long v)

long getFlag () const

StiKalmanTrackNode * extrapolateToBeam ()

StiKalmanTrackNode * extrapolateToRadius (double radius)

int approx (int mode=0)

void reduce ()

StMCTruth getTruth (double rXYMin=0, double rXYMax=1000) const

void print (const char *opt="") const

StiKalmanTrack & operator= (const StiKalmanTrack &tk)

int rejectByHitSet () const

Static Public Member Functions

static void setKalmanTrackNodeFactory (Factory< StiKalmanTrackNode > *)

Set the factory used for the creation of kalman track nodes.

static void setMaxRefiter (int maxRefiter)

static void setDebug (int m=0)

static int debug ()

Public Attributes

double _vChi2

Static Public Attributes

static int _debug = 0

Protected Attributes

StiKalmanTrackNode * firstNode

StiKalmanTrackNode * lastNode

UShort_t mSeedHitCount

int mVertex

long mFlag

double m

double _dca

Static Protected Attributes

static int mgMaxRefiter = 100

static Factory
< StiKalmanTrackNode > * trackNodeFactory = 0

Friends

ostream & operator<< (ostream &os, const StiKalmanTrack &track)

Detailed Description

Definition of Kalman Track.

A concrete subclass of StiTrack defining a Kalman track to be used by the Kalman Track Finder.

The track reconstruction is driven by an instance of class StiKalmanTrackFinder while the Kalman state of the track at any given location is held by instances of the StiKalmanTrackNode class. The use of nodes allows, in principle, to have, during the track search, and reconstruction, tracks that behave as trees rather than simple linear or sequential structures.

Users should not invoke the ctor of this class directly but should instead call the "getObject" method of the StiKalmantrackFactory class to get instances of this class. The StiKalmanTrackFactory holds (and owns, i.e. has responsibility for memory management) of a large array of re-usable track objects. Instances of this class should only be obtained from the factory as this eliminates (or at the very least minimizes the risk) of memory leaks.

This class holds a static pointer to a track node factory. The factory is invoked whenever instances of StiTrackNode are needed. The class holds pointers to the fisrt and last node associated with a track. Given that the reconstruction proceeds primarily outside-in, the first node is the outer most point associated with this track. The last node is the inner most point associated with the track.

This class includes a host of convenience methods to calculate track properties such as the number of hits on the track (getPointCount), the track length (getTrackLength), etc. Many of those properties are not stored internally but rather calculated on the fly from the appropriate nodes on the tracks. This offers the advantage that it is not necessary to recalculate these various properties systematically each time a fit or re-fit is performed but once when the information is actually needed.

See also:: StiKalmanTrackNode
StiKalmanTrackFinder

Author:: Claude A Pruneau (Wayne State University)

Definition at line 78 of file StiKalmanTrack.h.

Constructor & Destructor Documentation

StiKalmanTrack::StiKalmanTrack ( ) [inline]

Constructor Delegates the initialization of the object to the reset method. Note that users should not call this ctor directly but should instead invoke to the "getInstance" method of the Factory<StiKalmanTrack> class to get instances of this class. The StiKalmanTrackFactory holds (and owns, i.e. has responsibility for memory management) of a large array of re-usable track objects. Instances of this class should only be obtained from the factory as this eliminates (or at the very least minimizes the risk) of memory leaks.

Definition at line 90 of file StiKalmanTrack.h.

virtual StiKalmanTrack::~StiKalmanTrack ( ) [inline, virtual]

Destructor Nothing to be done as instances of this class do not "own" the objects (i.e. nodes) its members point to.

Definition at line 103 of file StiKalmanTrack.h.

Member Function Documentation

void StiKalmanTrack::add	(	StiTrackNode *	node,
		int	direction
	)			`[virtual]`

Add a kalman track node to this track as a child to the last node of the track Return the added node

Definition at line 1406 of file StiKalmanTrack.cxx.

Referenced by StiKalmanTrackFinder::extendTracksToVertex().

StiKTNBidirectionalIterator StiKalmanTrack::begin ( ) const [inline]

Convenience method used to return a track node iterator initialized to the track first node.

Returns:: Bidirectional Itertator of KalmanTrackNodes

Exceptions:

runtime_error

Definition at line 539 of file StiKalmanTrack.h.

Referenced by StiKalmanTrackFitter::fit(), getAllPointCount(), getChi2(), getFitPointCount(), getGapCount(), getInnOutMostNode(), getMaxPointCount(), getNodes(), getPointCount(), getTrackLength(), getTrackRadLength(), and stHits().

const StiKTNBidirectionalIterator & StiKalmanTrack::end ( ) const [inline]

Convenience method used to return a track node iterator initialized to the track last node.

Returns:: Bidirectional Itertator of KalmanTrackNodes

Exceptions:

runtime_error

Definition at line 562 of file StiKalmanTrack.h.

Referenced by StiKalmanTrackFitter::fit(), getAllPointCount(), getChi2(), getFitPointCount(), getGapCount(), getMaxPointCount(), getNodes(), getPointCount(), getTrackRadLength(), and stHits().

StiTrackNode * StiKalmanTrack::extendToVertex ( StiHit * vertex ) [virtual]

Extend track to the given vertex.

Attempt an extension of the track the given vertex.

Get node from node factory.
Reset node.
Propagate the node from given parent node "sNode", to the given vertex using a call to "propagate".
Evaluate the chi2 of the extrapolated if the vertex is added to the track. Done using a call to "evaluateChi2".
If chi2 is less than max allowed "maxChi2ForSelection", update track parameters using the vertex as a measurement and add the vertex to the track as the last node.

Notes

Throws logic_error if no node can be obtained from the node factory.
The methods "propagate", "evaluateChi2", and "updateNode" may throw runtime_error exceptions which are NOT caught here...

Implements StiTrack.

Definition at line 1149 of file StiKalmanTrack.cxx.

References StiKalmanTrackNode::evaluateChi2(), getInnerMostHitNode(), getInnerMostNode(), StiHit::isDca(), StiKalmanTrackNode::propagate(), StiHit::rotate(), stHits(), and StiKalmanTrackNode::updateNode().

Referenced by StiKalmanTrackFinder::extendTracksToVertex().

StiKalmanTrackNode * StiKalmanTrack::extrapolateToBeam ( )

Extrapolate this track to the beam axis (x==0) to provide an estimate of the track location at the beam axis. Returns a null pointer is the operation cannot be completed i.e. the track does not reach the beam axis plane.

Definition at line 1382 of file StiKalmanTrack.cxx.

References getInnerMostNode(), and StiKalmanTrackNode::propagateToBeam().

int StiKalmanTrack::getCharge ( ) const [virtual]

Return the track sign

Notes

Use the last node and the field.

Implements StiTrack.

Definition at line 619 of file StiKalmanTrack.cxx.

References StiKalmanTrackNode::getCharge(), and getInnerMostNode().

Referenced by StiKalmanTrackFinder::extendTracksToVertex().

double StiKalmanTrack::getChi2 ( ) const [virtual]

Return the track chi2 per dof

The track chi2 is calculated from the incremental chi2 of all nodes carrying a hit that contributed to the fit of the track. Note that a hit is not counted as contributing to the fit if its chi2 exceeds "StiKalmanTrackFitterParameters::instance()->getMaxChi2()" Note that this function returns "-1" if the number of fit points is smaller than 6

Implements StiTrack.

Definition at line 632 of file StiKalmanTrack.cxx.

References begin(), and end().

double StiKalmanTrack::getCurvature ( ) const [inline, virtual]

Return the curvature of the track at its inner most point.

Calculates and returns the track curvature at the inner most node held by this track.

Obtains the curvature from the inner most hit node associated with this track.

Implements StiTrack.

Definition at line 397 of file StiKalmanTrack.h.

References StiKalmanTrackNode::getCurvature(), and getInnerMostHitNode().

double StiKalmanTrack::getDca ( StiTrack * t ) const [inline]

Returns the distance of closest approach of this track to the give track.

Returns:: dca in cm.

Calculate and return the distance of closest approach to given track

Notes

No implementation.
Returns 0

Definition at line 505 of file StiKalmanTrack.h.

double StiKalmanTrack::getDca ( ) const [inline, virtual]

Returns the distance of closest approach of this track to the given hit.

See also:: StiHit

Returns:: dca in cm.

Calculate and return the distance of closest approach to given hit

Notes

No implementation.
Returns 0

Implements StiTrack.

Definition at line 487 of file StiKalmanTrack.h.

double StiKalmanTrack::getDca2 ( StiTrack * t ) const [inline, virtual]

Calculate and return the distance of closest approach to given track - 2D calc

Notes

No implementation.
Returns 0

Implements StiTrack.

Definition at line 517 of file StiKalmanTrack.h.

double StiKalmanTrack::getDca3 ( StiTrack * t ) const [inline, virtual]

Calculate and return the distance of closest approach to given track - 3D calc

Notes

No implementation.
Returns 0

Implements StiTrack.

Definition at line 529 of file StiKalmanTrack.h.

int StiKalmanTrack::getFitPointCount ( int detectorId = 0 ) const [virtual]

Returns the number of hits associated and used in the fit of this track.

Get number of fit points in given detector.

Return the number of hits (points) used in the fit of this track.

Notes

Currently no difference is made between points on the track and fit points on the track.
Call "getPointCount()" to get the count.

Returns:: number of hits on this track.

Implements StiTrack.

Definition at line 766 of file StiKalmanTrack.cxx.

References begin(), StiHit::detector(), and end().

int StiKalmanTrack::getGapCount ( ) const [virtual]

Return the number of gaps on this track.

Return the number of gaps (active layers with no hits) along this track.

Notes

A gap consists of one or multiple contiguous active layers through which this track passes.
There can be gaps on the inside or the outside of the track if no hits are found there.

Returns:: number of gaps.

Implements StiTrack.

Definition at line 723 of file StiKalmanTrack.cxx.

References begin(), and end().

vector< StiHit * > StiKalmanTrack::getHits ( ) [virtual]

Return all the hits associated with this track, including those with a large incremental chi2 that may not contribute to the fit.

Implements StiTrack.

Definition at line 1313 of file StiKalmanTrack.cxx.

References getLastNode().

StiKalmanTrackNode * StiKalmanTrack::getInnerMostHitNode ( int qua = 0 ) const

Accessor method returns the inner most hit node associated with the track.

Return the inner most hit associated with this track.

Notes

Throws logic_error exception if firstNode or lastNode are not defined, or if track has no hit.
Loop through all nodes from begin() to end() (or vice versa if tracking direction is outside-in) and search for node with hit. Return first hit found.

Returns:: outer most hit node on this track

Definition at line 1020 of file StiKalmanTrack.cxx.

References getInnOutMostNode().

Referenced by extendToVertex(), getCurvature(), getDca(), getMomentum(), getP(), getPhi(), getPseudoRapidity(), getPt(), getRapidity(), and getTanL().

StiKalmanTrackNode * StiKalmanTrack::getInnerMostNode ( int qua = 0 ) const [inline]

Accessor method returns the inner most node associated with the track.

Notes

Node returned depends on the direction of tracking.
Return firstNode if tracking was done inside-out, lastNode otherwise.
No check done to determine whether returned value is non null.

Returns:: outer most node on this track

Definition at line 601 of file StiKalmanTrack.h.

References getInnOutMostNode().

Referenced by extendToVertex(), extrapolateToBeam(), getCharge(), and getMomentumAtOrigin().

StiKalmanTrackNode * StiKalmanTrack::getInnOutMostNode	(	int	inot,
		int	qua
	)			const

Same for getNNodes(qua).

Accessor method returns the inner/outer most node associated with the track. inot: 0=inner, 1=outer; qua : 0=nocheck, 1=with hit inside, 2=chi2 non infinit

Return the inner most hit associated with this track.

Notes

Throws logic_error exception if firstNode or lastNode are not defined, or if track has no hit.
Loop through all nodes from end() to begin() (or vice versa if tracking direction is outside-in) and search for node with hit. Return first hit found.

Returns:: inner most hit node on this track

Exceptions:

logic_error

Definition at line 981 of file StiKalmanTrack.cxx.

References begin().

Referenced by StiKalmanTrackFinder::find(), getInnerMostHitNode(), getInnerMostNode(), getOuterMostHitNode(), and getOuterMostNode().

double StiKalmanTrack::getMass ( ) const [inline, virtual]

Return the mass hypothesis used in the resconstruction of this track.

Implements StiTrack.

Definition at line 335 of file StiKalmanTrack.h.

Referenced by getRapidity().

int StiKalmanTrack::getMaxPointCount ( int detectorId = 0 ) const [virtual]

Returns the maximum number of points that can possibly be on the track given its track parameters, i.e. its position in the detector. The calculation accounts for sublayers that are not active, and nominally active volumes that were turned off or had no data for some reason.

Calculate and return the maximum possible number of hits on this track.

Notes

Iterate through all nodes of this track.
Count active layers.
Use the (y,z) position of the node to determine whether point is on active region of the detector i.e. RDO were functional.

Returns:: maximum number of points

Implements StiTrack.

Definition at line 694 of file StiKalmanTrack.cxx.

References begin(), and end().

void StiKalmanTrack::getMomentum	(	double	p[3],
		double	e[6]
	)			const `[inline, virtual]`

Calculates and returns the momentum and error of the track.

Calculates and returns the momentum and error of the track

This method calculates and returns in the two arrays provided as arguments the 3-momentum and error of the track in Star global coordinates. The 3-momentum is calculated at the inner most point associated with the track. The inner-most point may or may not be the main vertex of the event. Care should thus be exercised while using this method.

The error is calculated (and returned) only if a non null array is passed as a second argument. It is thus possible to get the momentum without a lengthy calculation of the error matrix. The error error matrix corresponds to a full covariance matrix. The definition of the error matrix is described in the introduction of this class definition. Note that the actual calculation of the momentum and associated error is delegated to the track node class and uses the inner most node of the track.

Implements StiTrack.

Definition at line 366 of file StiKalmanTrack.h.

References getInnerMostHitNode().

double StiKalmanTrack::getNearBeam	(	StThreeVectorD *	pnt = `0`,
		StThreeVectorD *	dir = `0`
	)			const

Returns the track length (in centimeters) from the first point to beam line (x=y=0). pnt is the nearest point to beam and dir direction of tracl in this point The main vertex is included in the calculation if associated with the track.

Definition at line 937 of file StiKalmanTrack.cxx.

References StiKalmanTrackNode::getCurvature(), and StiKalmanTrackNode::getPhase().

StiKalmanTrackNode * StiKalmanTrack::getOuterMostNode ( int qua = 0 ) const [inline]

Accessor method returns the outer most node associated with the track.

Accessor method to get the dca.

Note

Not implemented

Accessor method returns the outer most node associated with the track.

Notes

Node returned depends on the direction of tracking.
Return firstNode if tracking was done outside-in, lastNode otherwise.
No check done to determine whether returned value is non null.

Returns:: outer most node on this track

Definition at line 587 of file StiKalmanTrack.h.

References getInnOutMostNode().

Referenced by StiKalmanTrackFinder::extendTrack().

double StiKalmanTrack::getP ( ) const [inline, virtual]

Calculates and returns the momentum of the track at the inner most node.

Calculates and returns the momentum of the track at the inner most node held by this track which may or (or not) be the primary vertex.

Implements StiTrack.

Definition at line 378 of file StiKalmanTrack.h.

References getInnerMostHitNode(), and StiKalmanTrackNode::getP().

double StiKalmanTrack::getPhi ( ) const [inline, virtual]

Return azimuthal angle at inner most point of the track.

Returns the azimuthal angle of the track determined at the inner most point of the track hich may or may not be a vertex.

Returns:: phi in radian

Implements StiTrack.

Definition at line 454 of file StiKalmanTrack.h.

References getInnerMostHitNode().

int StiKalmanTrack::getPointCount ( int detectorId = 0 ) const [virtual]

Return the number of hits associated with this track.

Returns the distance of closest approach of this track to the primary vertex

Returns:: dca

Calculate and return the number of hits on this track.

Notes

Iterate through all nodes of this track.
Count number of hits.

Returns:: number of hits.

Implements StiTrack.

Definition at line 665 of file StiKalmanTrack.cxx.

References begin(), and end().

double StiKalmanTrack::getPseudoRapidity ( ) const [inline, virtual]

Return the pseudorapidity of the track.

Returns the pseudo-rapidity of the track.

Obtains the helix pitch angle from the inner most hit node associated with the track.
Calculate/return the pseudo-rapidity using the pitch angle.

Returns:: pseudo-rapidity

Implements StiTrack.

Definition at line 438 of file StiKalmanTrack.h.

References getInnerMostHitNode().

double StiKalmanTrack::getPt ( ) const [inline, virtual]

Calculates and returns the transverse momentum of the track at the inner most node.

Calculates and returns the transverse momentum of the track at the inner most node held by this track which may or (or not) be the primary vertex.

Implements StiTrack.

Definition at line 387 of file StiKalmanTrack.h.

References getInnerMostHitNode(), and StiKalmanTrackNode::getPt().

double StiKalmanTrack::getRapidity ( ) const [inline, virtual]

Return the rapidity of the track if the mass is known.

Returns the rapidity of the track if the mass is known.

Obtains the momentum from the inner most hit node associated with the track.
Obtains the mass of this track using the getMass() method. If the mass returned is negative, throws a runtime_error exception.

Exceptions:

runtime_error

Returns:: rapidity

Implements StiTrack.

Definition at line 413 of file StiKalmanTrack.h.

References getInnerMostHitNode(), and getMass().

double StiKalmanTrack::getTanL ( ) const [inline, virtual]

Returns the tangent of the dip angle of the track determined at the inner most point of the track.

Return tan(lambda) of the particle at the inner most node held by this track which may (or not) be the primary vertex.

Returns:: tan(lambda)

Implements StiTrack.

Definition at line 466 of file StiKalmanTrack.h.

References getInnerMostHitNode().

double StiKalmanTrack::getTrackLength ( ) const [virtual]

Returns the track length (in centimeters) from the first to the last point on track. The main vertex is included in the calculation if associated with the track.

Calculate and return the track length.

Notes

Using helix track model in global reference frame.
Using only inner most and outer most hits associated with this track.

Returns:: tracklength

Exceptions:

runtime_error

Implements StiTrack.

Definition at line 828 of file StiKalmanTrack.cxx.

References begin(), and StiKalmanTrackNode::getCurvature().

Referenced by StiKalmanTrackFinder::find().

double StiKalmanTrack::getTrackRadLength ( ) const

Calculate and return the track segment length between two nodes.

Notes

This is basically a wrapper for the StiKalmanTrackNode::pathLToNode function.

Returns:: length

Calculates the radiation length of material crossed by the track.

Definition at line 879 of file StiKalmanTrack.cxx.

References begin(), end(), StiKalmanTrackNode::getGasX0(), StiKalmanTrackNode::getX0(), StiKalmanTrackNode::pathlength(), and StiKalmanTrackNode::pathLToNode().

int StiKalmanTrack::isPrimary ( ) const [inline]

Identifies the track as a primary or secondary track. The track is defined as primary if it contains a primary vertex i.e. if the vertex was included as a point to the track because it had low enough a incremental chi2.

Definition at line 201 of file StiKalmanTrack.h.

void StiKalmanTrack::reserveHits ( )

Declare hits associated with given track as used.

Declare hits on the track ending at "node" as used. This method starts with the last node and seeks the parent of each node recursively. The hit associated with each node (when there is a hit) is set to "used".

Definition at line 1120 of file StiKalmanTrack.cxx.

void StiKalmanTrack::reset ( void ) [virtual]

Reset the class members to their default state. This method is called by the ctor of the class to initialize the members of the class to an "empty" or null track state. The method must also be called everytime an instance of this class is retrieved from its factory in order to set the first and last nodes to "null" thus guaranteeing that the track object is empty i.e. does not represent any track and is thus ready for a new search and reconstruction.

Implements StiTrack.

Definition at line 443 of file StiKalmanTrack.cxx.

Referenced by StiLocalTrackMerger::StiLocalTrackMerger().

void StiKalmanTrack::setKalmanTrackNodeFactory ( Factory< StiKalmanTrackNode > * val ) [static]

Set the factory used for the creation of kalman track nodes.

See also:: StiKalmanTrackNodeFactory

Definition at line 467 of file StiKalmanTrack.cxx.

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

Sti/StiKalmanTrack.h
Sti/StiKalmanTrack.cxx


Public Types
enum	TRefitStatus { kNoErrors = 0, kRefitFail, kNotEnoughUsed, kInNodeNotValid, kBadQA, kVertexNodeInvalid, kNodeNotValid, kTooManyDroppedNodes }
Public Member Functions
	StiKalmanTrack ()
virtual	~StiKalmanTrack ()
void	reset ()
void	unset ()
void	getMomentum (double p[3], double e[6]) const
	Calculates and returns the momentum and error of the track.
double	getP () const
	Calculates and returns the momentum of the track at the inner most node.
double	getPt () const
	Calculates and returns the transverse momentum of the track at the inner most node.
double	getCurvature () const
	Return the curvature of the track at its inner most point.
double	getRapidity () const
	Return the rapidity of the track if the mass is known.
double	getPseudoRapidity () const
	Return the pseudorapidity of the track.
double	getPhi () const
	Return azimuthal angle at inner most point of the track.
double	getTanL () const
	Returns the tangent of the dip angle of the track determined at the inner most point of the track.
double	getDca () const
virtual double	getDca (const StiHit *vertex) const
	Return global dca of the track relative to given vertex or point.
void	setDca (double dca)
double	getDca (StiTrack *t) const
int	getPointCount (int detectorId=0) const
	Return the number of hits associated with this track.
int	getFitPointCount (int detectorId=0) const
	Returns the number of hits associated and used in the fit of this track.
void	getAllPointCount (int count[1][3], int maxDetId) const
	Returns all the PointCount far all detectors and types of nodes.
int	getGapCount () const
	Return the number of gaps on this track.
double	getTrackLength () const
double	getNearBeam (StThreeVectorD pnt=0, StThreeVectorD dir=0) const
int	getMaxPointCount (int detectorId=0) const
UShort_t	getSeedHitCount () const
	number of hits used to seed the track
void	setSeedHitCount (UShort_t c)
int	isPrimary () const
void	setPrimary (int vertex)
double	calculateTrackLength () const
double	calculateTrackSegmentLength (const StiKalmanTrackNode &p1, const StiKalmanTrackNode &p2) const
double	getTrackRadLength () const
int	calculatePointCount () const
int	calculateMaxPointCount () const
double	getTpcDedx () const
double	getSvtDedx () const
StiKTNBidirectionalIterator	begin () const
const StiKTNBidirectionalIterator &	end () const
StiKTNBidirectionalIterator	rbegin () const
const StiKTNBidirectionalIterator &	rend () const
void	removeLastNode ()
StiKalmanTrackNode *	getInnOutMostNode (int inot, int qua) const
	Same for getNNodes(qua).
StiKalmanTrackNode *	getOuterMostNode (int qua=0) const
	Accessor method returns the outer most node associated with the track.
StiKalmanTrackNode *	getInnerMostNode (int qua=0) const
	Accessor method returns the inner most node associated with the track.
StiKalmanTrackNode *	getOuterMostHitNode (int qua=0) const
	Accessor method returns the outer most hit node associated with the track.
StiKalmanTrackNode *	getInnerMostHitNode (int qua=0) const
	Accessor method returns the inner most hit node associated with the track.
int	getNNodes (int qua=0) const
int	releaseHits (double rMin=4, double rMax=50)
StiKalmanTrackNode *	getFirstNode () const
	Accessor method returns the first node associated with the track.
StiKalmanTrackNode *	getLastNode () const
	Accessor method returns the last node associated with the track.
void	setLastNode (StiKalmanTrackNode *n)
void	setFirstNode (StiKalmanTrackNode *n)
void	setFirstLastNode (StiKalmanTrackNode *n)
virtual void	add (StiTrackNode *node, int direction)
int	initialize (const vector< StiHit * > &)
	Convenience method to initialize a track based on seed information.
StThreeVector< double >	getMomentumAtOrigin () const
	Method to return the pointer to the fitter parameters.
StThreeVector< double >	getPoint (int firstLast=0) const
virtual vector< StiHit * >	getHits ()
virtual vector< const StMeasuredPoint * >	stHits () const
	return hits;
virtual vector < StiKalmanTrackNode * >	getNodes (int detectorGroupId) const
	return vector of nodes with hits
double	getMass () const
int	getCharge () const
double	getChi2 () const
double	getDca2 (StiTrack *t) const
double	getDca3 (StiTrack *t) const
bool	find (int direction=kOutsideIn)
int	refit ()
int	refitL ()
void	reserveHits ()
StiTrackNode *	extendToVertex (StiHit *vertex)
void	setFlag (long v)
long	getFlag () const
StiKalmanTrackNode *	extrapolateToBeam ()
StiKalmanTrackNode *	extrapolateToRadius (double radius)
int	approx (int mode=0)
void	reduce ()
StMCTruth	getTruth (double rXYMin=0, double rXYMax=1000) const
void	print (const char *opt="") const
StiKalmanTrack &	operator= (const StiKalmanTrack &tk)
int	rejectByHitSet () const
Static Public Member Functions
static void	setKalmanTrackNodeFactory (Factory< StiKalmanTrackNode > *)
	Set the factory used for the creation of kalman track nodes.
static void	setMaxRefiter (int maxRefiter)
static void	setDebug (int m=0)
static int	debug ()
Public Attributes
double	_vChi2
Static Public Attributes
static int	_debug = 0
Protected Attributes
StiKalmanTrackNode *	firstNode
StiKalmanTrackNode *	lastNode
UShort_t	mSeedHitCount
int	mVertex
long	mFlag
double	m
double	_dca
Static Protected Attributes
static int	mgMaxRefiter = 100
static Factory < StiKalmanTrackNode > *	trackNodeFactory = 0
Friends
ostream &	operator<< (ostream &os, const StiKalmanTrack &track)