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#ifndef FastSimulation_Muons_FastTSGFromPropagation_H
#define FastSimulation_Muons_FastTSGFromPropagation_H
/** \class FastTSGFromPropagation
* Tracker Seed Generator by propagating and updating a standAlone muon
* to the first 2 (or 1) rechits it meets in tracker system
*
* Emulate TSGFromPropagation in RecoMuon
*
* \author Hwidong Yoo - Purdue University
*/
#include "RecoMuon/TrackerSeedGenerator/interface/TrackerSeedGenerator.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/EDGetToken.h"
#include "TrackingTools/TrajectoryState/interface/FreeTrajectoryState.h"
#include "RecoMuon/TrackingTools/interface/MuonServiceProxy.h"
#include "TrackingTools/PatternTools/interface/TrajectoryMeasurement.h"
#include "TrackingTools/PatternTools/interface/TrajectoryStateUpdator.h"
#include "RecoMuon/TrackingTools/interface/MuonErrorMatrix.h"
#include "DataFormats/BeamSpot/interface/BeamSpot.h"
#include "TrackingTools/MeasurementDet/interface/LayerMeasurements.h"
#include "MagneticField/Records/interface/IdealMagneticFieldRecord.h"
#include "MagneticField/Engine/interface/MagneticField.h"
#include "SimDataFormats/Track/interface/SimTrackContainer.h"
#include "TrackingTools/TransientTrackingRecHit/interface/TransientTrackingRecHitBuilder.h"
#include "RecoTracker/TransientTrackingRecHit/interface/TkTransientTrackingRecHitBuilder.h"
#include "FWCore/Framework/interface/ConsumesCollector.h"
#include "DataFormats/TrackerRecHit2D/interface/FastTrackerRecHitCollection.h"
#include "DataFormats/TrackerRecHit2D/interface/FastTrackerRecHit.h"
#include <memory>
class LayerMeasurements;
class Chi2MeasurementEstimator;
class Propagator;
class MeasurementTracker;
class GeometricSearchTracker;
class DirectTrackerNavigation;
struct TrajectoryStateTransform;
class SimTrack;
class TrackerGeometry;
class TrackerTopology;
class TransientRecHitRecord;
class CkfComponentsRecord;
class TrackerRecoGeometryRecord;
class FastTSGFromPropagation : public TrackerSeedGenerator {
public:
/// constructor
FastTSGFromPropagation(const edm::ParameterSet& pset, edm::ConsumesCollector& iC);
FastTSGFromPropagation(const edm::ParameterSet& par, const MuonServiceProxy*, edm::ConsumesCollector& iC);
/// destructor
~FastTSGFromPropagation() override;
/// generate seed(s) for a track
void trackerSeeds(const TrackCand&,
const TrackingRegion&,
const TrackerTopology* tTopo,
std::vector<TrajectorySeed>&) override;
/// initialize
void init(const MuonServiceProxy*) override;
/// set an event
void setEvent(const edm::Event&) override;
private:
/// A mere copy (without memory leak) of an existing tracking method
void stateOnDet(const TrajectoryStateOnSurface& ts, unsigned int detid, PTrajectoryStateOnDet& pts) const;
TrajectoryStateOnSurface innerState(const TrackCand&) const;
TrajectoryStateOnSurface outerTkState(const TrackCand&) const;
const TrajectoryStateUpdator* updator() const { return theUpdator.get(); }
const Chi2MeasurementEstimator* estimator() const { return theEstimator.get(); }
edm::ESHandle<Propagator> propagator() const { return theService->propagator(thePropagatorName); }
/// create a hitless seed from a trajectory state
TrajectorySeed createSeed(const TrajectoryStateOnSurface&, const DetId&) const;
/// create a seed from a trajectory state
TrajectorySeed createSeed(const TrajectoryStateOnSurface& tsos,
const edm::OwnVector<TrackingRecHit>& container,
const DetId& id) const;
/// select valid measurements
void validMeasurements(std::vector<TrajectoryMeasurement>&) const;
/// look for measurements on the first compatible layer
std::vector<TrajectoryMeasurement> findMeasurements(const DetLayer*, const TrajectoryStateOnSurface&) const;
/// check some quantity and beam-spot compatibility and decide to continue
bool passSelection(const TrajectoryStateOnSurface&) const;
void getRescalingFactor(const TrackCand& staMuon);
/// adjust the error matrix of the FTS
void adjust(FreeTrajectoryState&) const;
/// adjust the error matrix of the TSOS
void adjust(TrajectoryStateOnSurface&) const;
double dxyDis(const TrajectoryStateOnSurface& tsos) const;
double zDis(const TrajectoryStateOnSurface& tsos) const;
struct increasingEstimate {
bool operator()(const TrajectoryMeasurement& lhs, const TrajectoryMeasurement& rhs) const {
return lhs.estimate() < rhs.estimate();
}
};
struct isInvalid {
bool operator()(const TrajectoryMeasurement& measurement) {
return (((measurement).recHit() == nullptr) || !((measurement).recHit()->isValid()) ||
!((measurement).updatedState().isValid()));
}
};
unsigned long long theCacheId_TG;
std::string theCategory;
std::unique_ptr<const DirectTrackerNavigation> theNavigation;
const TrackerGeometry* theGeometry;
const MuonServiceProxy* theService;
std::unique_ptr<const TrajectoryStateUpdator> theUpdator;
std::unique_ptr<const Chi2MeasurementEstimator> theEstimator;
double theMaxChi2;
double theFlexErrorRescaling;
double theFixedErrorRescaling;
bool theUseVertexStateFlag;
bool theUpdateStateFlag;
std::string theResetMethod;
bool theSelectStateFlag;
std::string thePropagatorName;
std::unique_ptr<MuonErrorMatrix> theErrorMatrixAdjuster;
bool theAdjustAtIp;
double theSigmaZ;
const edm::ParameterSet theConfig;
edm::EDGetTokenT<edm::SimTrackContainer> theSimTrackCollectionToken_;
edm::EDGetTokenT<FastTrackerRecHitCombinationCollection> recHitCombinationsToken_;
edm::EDGetTokenT<reco::BeamSpot> beamSpot_;
edm::EDGetTokenT<MeasurementTrackerEvent> theMeasurementTrackerEventToken_;
edm::Handle<reco::BeamSpot> theBeamSpot;
edm::Handle<edm::SimTrackContainer> theSimTracks;
edm::Handle<FastTrackerRecHitCombinationCollection> recHitCombinations;
edm::Handle<MeasurementTrackerEvent> theMeasTrackerEvent;
edm::ESHandle<TransientTrackingRecHitBuilder> theTTRHBuilder;
//from init
edm::ESGetToken<TrackerGeometry, TrackerDigiGeometryRecord> theGeometryToken;
edm::ESGetToken<TransientTrackingRecHitBuilder, TransientRecHitRecord> theTTRHBuilderToken;
//from setEvent
edm::ESGetToken<GeometricSearchTracker, TrackerRecoGeometryRecord> theTrackerToken;
};
#endif
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