GsfTrajectoryFitterESProducer.cc

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#include "FWCore/Framework/interface/ESProducer.h"
#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/Framework/interface/ModuleFactory.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "FWCore/Utilities/interface/ESGetToken.h"
 
#include "TrackingTools/Records/interface/TrackingComponentsRecord.h"
#include "TrackingTools/TrackFitters/interface/TrajectoryFitterRecord.h"
#include "TrackingTools/TrackFitters/interface/TrajectoryFitter.h"
 
#include "TrackingTools/GeomPropagators/interface/AnalyticalPropagator.h"
#include "TrackingTools/GsfTracking/interface/GsfMaterialEffectsUpdator.h"
#include "TrackingTools/GsfTracking/interface/GsfPropagatorWithMaterial.h"
#include "TrackingTools/GsfTracking/interface/GsfMultiStateUpdator.h"
#include "TrackingTools/GsfTools/interface/MultiGaussianStateMerger.h"
#include "TrackingTools/GsfTools/interface/CloseComponentsMerger.h"
#include "TrackingTools/GsfTracking/interface/MultiTrajectoryStateMerger.h"
#include "TrackingTools/GsfTracking/interface/GsfChi2MeasurementEstimator.h"
#include "TrackingTools/GsfTracking/interface/GsfTrajectoryFitter.h"
 
#include <string>
#include <memory>
 
#include <iostream>
 
class GsfTrajectoryFitterESProducer : public edm::ESProducer {
public:
  GsfTrajectoryFitterESProducer(const edm::ParameterSet& p);
  ~GsfTrajectoryFitterESProducer() override;
  std::unique_ptr<TrajectoryFitter> produce(const TrajectoryFitterRecord&);
 
  static void fillDescriptions(edm::ConfigurationDescriptions& descriptions);
 
private:
  edm::ESGetToken<GsfMaterialEffectsUpdator, TrackingComponentsRecord> matUpdatorToken_;
  edm::ESGetToken<Propagator, TrackingComponentsRecord> propagatorToken_;
  edm::ESGetToken<MultiGaussianStateMerger<5>, TrackingComponentsRecord> mergerToken_;
  edm::ESGetToken<DetLayerGeometry, RecoGeometryRecord> geoToken_;
};
 
GsfTrajectoryFitterESProducer::GsfTrajectoryFitterESProducer(const edm::ParameterSet& p) {
  std::string myname = p.getParameter<std::string>("ComponentName");
  setWhatProduced(this, myname)
      .setConsumes(matUpdatorToken_, edm::ESInputTag("", p.getParameter<std::string>("MaterialEffectsUpdator")))
      .setConsumes(propagatorToken_, edm::ESInputTag("", p.getParameter<std::string>("GeometricalPropagator")))
      .setConsumes(mergerToken_, edm::ESInputTag("", p.getParameter<std::string>("Merger")))
      .setConsumes(geoToken_, edm::ESInputTag("", p.getParameter<std::string>("RecoGeometry")));
}
 
GsfTrajectoryFitterESProducer::~GsfTrajectoryFitterESProducer() {}
 
std::unique_ptr<TrajectoryFitter> GsfTrajectoryFitterESProducer::produce(const TrajectoryFitterRecord& iRecord) {
  //
  // propagator
  //
  GsfPropagatorWithMaterial propagator(iRecord.get(propagatorToken_), iRecord.get(matUpdatorToken_));
  //
  // merger
  //
  MultiTrajectoryStateMerger merger(iRecord.get(mergerToken_));
  //
  // estimator
  //
  //   double chi2Cut = pset_.getParameter<double>("ChiSquarCut");
  double chi2Cut(100.);
  GsfChi2MeasurementEstimator estimator(chi2Cut);
 
  //
  // create algorithm
  //
  return std::make_unique<GsfTrajectoryFitter>(
      propagator, GsfMultiStateUpdator(), estimator, merger, &iRecord.get(geoToken_));
}
 
void GsfTrajectoryFitterESProducer::fillDescriptions(edm::ConfigurationDescriptions& descriptions) {
  edm::ParameterSetDescription desc;
  desc.add<std::string>("ComponentName");
  desc.add<std::string>("MaterialEffectsUpdator");
  desc.add<std::string>("GeometricalPropagator");
  desc.add<std::string>("Merger");
  desc.add<std::string>("RecoGeometry");
  descriptions.addDefault(desc);
}
 
DEFINE_FWK_EVENTSETUP_MODULE(GsfTrajectoryFitterESProducer);