|
|
|
#include <TrackTransformer.h>
This class takes a reco::Track and refits the rechits inside it. The final result is a Trajectory refitted and smoothed. To make the refitting (and the smoothing) the usual KF tools are used.
CAVEAT: till now (it will be changed in the near future) the class stores the pointers to the services, therefore EACH event the setServices(const edm::EventSetup&) method MUST be called in the code in which the TrackTransformer is used.
This class takes a reco::Track and refits the rechits inside it. The final result is a Trajectory refitted and smoothed. To make the refitting (and the smoothing) the usual KF tools are used.
CAVEAT: till now (it will be changed in the near future) the class stores the pointers to the services, therefore EACH event the setServices(const edm::EventSetup&) method MUST be called in the code in which the TrackTransformer is used.
Rec hits are ordered in rank of increasing |z| assuing muons are coming from the top of the detector.
$Date: 2009/01/15
author R. Bellan - CERN <riccardo.bellan@cern.ch> modified for zed ordering by N. Kypreos - UF <nicholas.theodore.kypreos@cern.ch>
This class takes a reco::Track and refits the rechits inside it. The final result is a Trajectory refitted and smoothed. To make the refitting (and the smoothing) the usual KF tools are used.
CAVEAT: till now (it will be changed in the near future) the class stores the pointers to the services, therefore EACH event the setServices(const edm::EventSetup&) method MUST be called in the code in which the TrackTransformer is used.
Definition at line 39 of file TrackTransformer.h.
| TrackTransformer::TrackTransformer | ( | const edm::ParameterSet & | parameterSet | ) |
Constructor.
Definition at line 29 of file TrackTransformer.cc.
References edm::ParameterSet::getParameter(), and ExpressReco_HICollisions_FallBack::RefitDirection.
{
// Refit direction
string refitDirectionName = parameterSet.getParameter<string>("RefitDirection");
theRefitDirection = RefitDirection(refitDirectionName);
theFitterName = parameterSet.getParameter<string>("Fitter");
theSmootherName = parameterSet.getParameter<string>("Smoother");
thePropagatorName = parameterSet.getParameter<string>("Propagator");
theTrackerRecHitBuilderName = parameterSet.getParameter<string>("TrackerRecHitBuilder");
theMuonRecHitBuilderName = parameterSet.getParameter<string>("MuonRecHitBuilder");
theRPCInTheFit = parameterSet.getParameter<bool>("RefitRPCHits");
theDoPredictionsOnly = parameterSet.getParameter<bool>("DoPredictionsOnly");
theCacheId_TC = theCacheId_GTG = theCacheId_MG = theCacheId_TRH = 0;
}
| TrackTransformer::~TrackTransformer | ( | ) | [virtual] |
| RefitDirection::GeometricalDirection TrackTransformer::checkRecHitsOrdering | ( | TransientTrackingRecHit::ConstRecHitContainer & | recHits | ) | const [private] |
Definition at line 124 of file TrackTransformer.cc.
References first, insideOut, prof2calltree::last, LogDebug, PV3DBase< T, PVType, FrameType >::mag(), outsideIn, position, and RefitDirection::undetermined.
{
if (!recHits.empty()){
GlobalPoint first = trackingGeometry()->idToDet(recHits.front()->geographicalId())->position();
GlobalPoint last = trackingGeometry()->idToDet(recHits.back()->geographicalId())->position();
double rFirst = first.mag();
double rLast = last.mag();
if(rFirst < rLast) return RefitDirection::insideOut;
else if(rFirst > rLast) return RefitDirection::outsideIn;
else{
LogDebug("Reco|TrackingTools|TrackTransformer") << "Impossible to determine the rechits order" <<endl;
return RefitDirection::undetermined;
}
}
else{
LogDebug("Reco|TrackingTools|TrackTransformer") << "Impossible to determine the rechits order" <<endl;
return RefitDirection::undetermined;
}
}
| TransientTrackingRecHit::ConstRecHitContainer TrackTransformer::getTransientRecHits | ( | const reco::TransientTrack & | track | ) | const |
Definition at line 101 of file TrackTransformer.cc.
References LogTrace, DetId::Muon, reco::TransientTrack::recHitsBegin(), reco::TransientTrack::recHitsEnd(), query::result, and align::Tracker.
{
TransientTrackingRecHit::ConstRecHitContainer result;
for (trackingRecHit_iterator hit = track.recHitsBegin(); hit != track.recHitsEnd(); ++hit) {
if((*hit)->isValid()) {
if ( (*hit)->geographicalId().det() == DetId::Tracker ) {
result.push_back(theTrackerRecHitBuilder->build(&**hit));
} else if ( (*hit)->geographicalId().det() == DetId::Muon ){
if( (*hit)->geographicalId().subdetId() == 3 && !theRPCInTheFit){
LogTrace("Reco|TrackingTools|TrackTransformer") << "RPC Rec Hit discarged";
continue;
}
result.push_back(theMuonRecHitBuilder->build(&**hit));
}
}
}
return result;
}
| const MagneticField* TrackTransformer::magneticField | ( | ) | const [inline] |
the magnetic field
Definition at line 62 of file TrackTransformer.h.
References theMGField.
{return &*theMGField;}
| edm::ESHandle<Propagator> TrackTransformer::propagator | ( | void | ) | const [inline, private] |
| edm::ESHandle<TrajectoryFitter> TrackTransformer::refitter | ( | ) | const [inline] |
the refitter used to refit the reco::Track
Definition at line 71 of file TrackTransformer.h.
References theFitter.
{return theFitter;}
| void TrackTransformer::setServices | ( | const edm::EventSetup & | setup | ) | [virtual] |
set the services needed by the TrackTransformer
Implements TrackTransformerBase.
Definition at line 52 of file TrackTransformer.cc.
References edm::EventSetup::get(), LogTrace, and metname.
Referenced by TrackerToMuonPropagator::produce(), CSCOverlapsAlignmentAlgorithm::run(), and GlobalTrajectoryBuilderBase::setEvent().
{
const std::string metname = "Reco|TrackingTools|TrackTransformer";
setup.get<TrajectoryFitter::Record>().get(theFitterName,theFitter);
setup.get<TrajectoryFitter::Record>().get(theSmootherName,theSmoother);
unsigned long long newCacheId_TC = setup.get<TrackingComponentsRecord>().cacheIdentifier();
if ( newCacheId_TC != theCacheId_TC ){
LogTrace(metname) << "Tracking Component changed!";
theCacheId_TC = newCacheId_TC;
setup.get<TrackingComponentsRecord>().get(thePropagatorName,thePropagator);
}
// Global Tracking Geometry
unsigned long long newCacheId_GTG = setup.get<GlobalTrackingGeometryRecord>().cacheIdentifier();
if ( newCacheId_GTG != theCacheId_GTG ) {
LogTrace(metname) << "GlobalTrackingGeometry changed!";
theCacheId_GTG = newCacheId_GTG;
setup.get<GlobalTrackingGeometryRecord>().get(theTrackingGeometry);
}
// Magfield Field
unsigned long long newCacheId_MG = setup.get<IdealMagneticFieldRecord>().cacheIdentifier();
if ( newCacheId_MG != theCacheId_MG ) {
LogTrace(metname) << "Magnetic Field changed!";
theCacheId_MG = newCacheId_MG;
setup.get<IdealMagneticFieldRecord>().get(theMGField);
}
// Transient Rechit Builders
unsigned long long newCacheId_TRH = setup.get<TransientRecHitRecord>().cacheIdentifier();
if ( newCacheId_TRH != theCacheId_TRH ) {
theCacheId_TRH = newCacheId_TRH;
LogTrace(metname) << "TransientRecHitRecord changed!";
setup.get<TransientRecHitRecord>().get(theTrackerRecHitBuilderName,theTrackerRecHitBuilder);
setup.get<TransientRecHitRecord>().get(theMuonRecHitBuilderName,theMuonRecHitBuilder);
}
}
| edm::ESHandle<TrajectorySmoother> TrackTransformer::smoother | ( | ) | const [inline] |
the smoother used to smooth the trajectory which came from the refitting step
Definition at line 74 of file TrackTransformer.h.
References theSmoother.
{return theSmoother;}
| edm::ESHandle<GlobalTrackingGeometry> TrackTransformer::trackingGeometry | ( | ) | const [inline] |
the tracking geometry
Definition at line 65 of file TrackTransformer.h.
References theTrackingGeometry.
{return theTrackingGeometry;}
| vector< Trajectory > TrackTransformer::transform | ( | const reco::TransientTrack | track, |
| TransientTrackingRecHit::ConstRecHitContainer | recHitsForReFit | ||
| ) | const |
Convert a reco::TrackRef into Trajectory, refit with a new set of hits.
Convert Tracks into Trajectories with a given set of hits.
Definition at line 170 of file TrackTransformer.cc.
References alongMomentum, anyDirection, TrajectoryStateOnSurface::globalMomentum(), TrajectoryStateOnSurface::globalPosition(), reco::TransientTrack::innermostMeasurementState(), RefitDirection::insideOut, TrajectoryStateOnSurface::isValid(), LogTrace, metname, oppositeToMomentum, reco::TransientTrack::outermostMeasurementState(), outsideIn, RefitDirection::outsideIn, L1TEmulatorMonitor_cff::p, position, LargeD0_PixelPairStep_cff::propagator, Trajectory::push(), TrajectoryStateOnSurface::surface(), reco::TransientTrack::track(), PV3DBase< T, PVType, FrameType >::x(), and PV3DBase< T, PVType, FrameType >::y().
{
const std::string metname = "Reco|TrackingTools|TrackTransformer";
if(recHitsForReFit.size() < 2) return vector<Trajectory>();
// 8 cases are foreseen:
// [RH = rec hit order, P = momentum dir, FD = fit direction. IO/OI = inside-out/outside-in, AM/OM = along momentum/opposite to momentum]
// (1) RH IO | P IO | FD AM ---> Start from IN
// (2) RH IO | P IO | FD OM ---> Reverse RH and start from OUT
// (3) RH IO | P OI | FD AM ---> Reverse RH and start from IN
// (4) RH IO | P OI | FD OM ---> Start from OUT
// (5) RH OI | P IO | FD AM ---> Reverse RH and start from IN
// (6) RH OI | P IO | FD OM ---> Start from OUT
// (7) RH OI | P OI | FD AM ---> Start from IN
// (8) RH OI | P OI | FD OM ---> Reverse RH and start from OUT
//
// *** Rules: ***
// -A- If RH-FD agree (IO-AM,OI-OM) do not reverse the RH
// -B- If FD along momentum start from innermost state, otherwise use outermost
// Other special cases can be handled:
// (1 bis) RH IO | P IO | GFD IO => FD AM ---> Start from IN
// (2 bis) RH IO | P IO | GFD OI => FD OM ---> Reverse RH and start from OUT
// (3 bis) RH IO | P OI | GFD OI => FD AM ---> Reverse RH and start from OUT
// (4 bis) RH IO | P OI | GFD IO => FD OM ---> Start from IN
// (5 bis) RH OI | P IO | GFD IO => FD AM ---> Reverse RH and start from IN
// (6 bis) RH OI | P IO | GFD OI => FD OM ---> Start from OUT
// (7 bis) RH OI | P OI | GFD OI => FD AM ---> Start from OUT
// (8 bis) RH OI | P OI | GFD IO => FD OM ---> Reverse RH and start from IN
//
// *** Additional rule: ***
// -A0- If P and GFD agree, then FD is AM otherwise is OM
// -A00- rechit must be ordered as GFD in order to handle the case of cosmics
// -B0- The starting state is decided by GFD
// Determine the RH order
RefitDirection::GeometricalDirection recHitsOrder = checkRecHitsOrdering(recHitsForReFit); // FIXME change nome of the *type* --> RecHit order!
LogTrace(metname) << "RH order (0-insideOut, 1-outsideIn): " << recHitsOrder;
PropagationDirection propagationDirection = theRefitDirection.propagationDirection();
// Apply rule -A0-
if(propagationDirection == anyDirection){
GlobalVector momentum = track.innermostMeasurementState().globalMomentum();
GlobalVector position = track.innermostMeasurementState().globalPosition() - GlobalPoint(0,0,0);
RefitDirection::GeometricalDirection p = (momentum.x()*position.x() > 0 || momentum.y()*position.y() > 0) ? RefitDirection::insideOut : RefitDirection::outsideIn;
propagationDirection = p == theRefitDirection.geometricalDirection() ? alongMomentum : oppositeToMomentum;
LogTrace(metname) << "P (0-insideOut, 1-outsideIn): " << p;
LogTrace(metname) << "FD (0-OM, 1-AM, 2-ANY): " << propagationDirection;
}
// -A0-
// Apply rule -A-
if(theRefitDirection.propagationDirection() != anyDirection){
if((recHitsOrder == RefitDirection::insideOut && propagationDirection == oppositeToMomentum) ||
(recHitsOrder == RefitDirection::outsideIn && propagationDirection == alongMomentum) )
reverse(recHitsForReFit.begin(),recHitsForReFit.end());}
// -A-
// Apply rule -A00-
else{
// reorder the rechit as defined in theRefitDirection.geometricalDirection();
if(theRefitDirection.geometricalDirection() != recHitsOrder) reverse(recHitsForReFit.begin(),recHitsForReFit.end());
}
// -A00-
// Apply rule -B-
TrajectoryStateOnSurface firstTSOS = track.innermostMeasurementState();
unsigned int innerId = track.track().innerDetId();
if(theRefitDirection.propagationDirection() != anyDirection){
if(propagationDirection == oppositeToMomentum){
innerId = track.track().outerDetId();
firstTSOS = track.outermostMeasurementState();
}
}
else { // if(theRefitDirection.propagationDirection() == anyDirection)
// Apply rule -B0-
if(theRefitDirection.geometricalDirection() == RefitDirection::outsideIn){
innerId = track.track().outerDetId();
firstTSOS = track.outermostMeasurementState();
}
// -B0-
}
// -B-
if(!firstTSOS.isValid()){
LogTrace(metname)<<"Error wrong initial state!"<<endl;
return vector<Trajectory>();
}
TrajectorySeed seed(PTrajectoryStateOnDet(),TrajectorySeed::recHitContainer(),propagationDirection);
if(recHitsForReFit.front()->geographicalId() != DetId(innerId)){
LogTrace(metname)<<"Propagation occured"<<endl;
firstTSOS = propagator()->propagate(firstTSOS, recHitsForReFit.front()->det()->surface());
if(!firstTSOS.isValid()){
LogTrace(metname)<<"Propagation error!"<<endl;
return vector<Trajectory>();
}
}
if(theDoPredictionsOnly){
Trajectory aTraj(seed,propagationDirection);
TrajectoryStateOnSurface predTSOS = firstTSOS;
for(TransientTrackingRecHit::ConstRecHitContainer::const_iterator ihit = recHitsForReFit.begin();
ihit != recHitsForReFit.end(); ++ihit ) {
predTSOS = propagator()->propagate(predTSOS, (*ihit)->det()->surface());
if (predTSOS.isValid()) aTraj.push(TrajectoryMeasurement(predTSOS, *ihit));
}
return vector<Trajectory>(1, aTraj);
}
vector<Trajectory> trajectories = theFitter->fit(seed,recHitsForReFit,firstTSOS);
if(trajectories.empty()){
LogTrace(metname)<<"No Track refitted!"<<endl;
return vector<Trajectory>();
}
Trajectory trajectoryBW = trajectories.front();
vector<Trajectory> trajectoriesSM = theSmoother->trajectories(trajectoryBW);
if(trajectoriesSM.empty()){
LogTrace(metname)<<"No Track smoothed!"<<endl;
return vector<Trajectory>();
}
return trajectoriesSM;
}
| vector< Trajectory > TrackTransformer::transform | ( | const reco::TrackRef & | track | ) | const |
Convert a reco::TrackRef into Trajectory.
Definition at line 95 of file TrackTransformer.cc.
{
return transform(*track);
}
| vector< Trajectory > TrackTransformer::transform | ( | const reco::Track & | newTrack | ) | const [virtual] |
Convert a reco::Track into Trajectory.
Convert Tracks into Trajectories.
Implements TrackTransformerBase.
Definition at line 156 of file TrackTransformer.cc.
References metname, and ExpressReco_HICollisions_FallBack::track.
Referenced by GlobalTrajectoryBuilderBase::build(), CSCPairResidualsConstraint::dphidzFromTrack(), and TrackerToMuonPropagator::produce().
{
const std::string metname = "Reco|TrackingTools|TrackTransformer";
reco::TransientTrack track(newTrack,magneticField(),trackingGeometry());
// Build the transient Rechits
TransientTrackingRecHit::ConstRecHitContainer recHitsForReFit = getTransientRecHits(track);
return transform(track, recHitsForReFit);
}
unsigned long long TrackTransformer::theCacheId_GTG [private] |
Definition at line 88 of file TrackTransformer.h.
unsigned long long TrackTransformer::theCacheId_MG [private] |
Definition at line 89 of file TrackTransformer.h.
unsigned long long TrackTransformer::theCacheId_TC [private] |
Definition at line 87 of file TrackTransformer.h.
unsigned long long TrackTransformer::theCacheId_TRH [private] |
Definition at line 90 of file TrackTransformer.h.
bool TrackTransformer::theDoPredictionsOnly [private] |
Definition at line 94 of file TrackTransformer.h.
Definition at line 101 of file TrackTransformer.h.
Referenced by refitter().
std::string TrackTransformer::theFitterName [private] |
Definition at line 100 of file TrackTransformer.h.
Definition at line 98 of file TrackTransformer.h.
Referenced by magneticField().
Definition at line 115 of file TrackTransformer.h.
std::string TrackTransformer::theMuonRecHitBuilderName [private] |
Definition at line 114 of file TrackTransformer.h.
Definition at line 85 of file TrackTransformer.h.
Referenced by propagator().
std::string TrackTransformer::thePropagatorName [private] |
Definition at line 83 of file TrackTransformer.h.
Definition at line 95 of file TrackTransformer.h.
bool TrackTransformer::theRPCInTheFit [private] |
Definition at line 92 of file TrackTransformer.h.
Definition at line 104 of file TrackTransformer.h.
Referenced by smoother().
std::string TrackTransformer::theSmootherName [private] |
Definition at line 103 of file TrackTransformer.h.
Definition at line 112 of file TrackTransformer.h.
std::string TrackTransformer::theTrackerRecHitBuilderName [private] |
Definition at line 111 of file TrackTransformer.h.
Definition at line 97 of file TrackTransformer.h.
Referenced by trackingGeometry().
1.7.3