ShallowSimTracksProducer.cc

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#include "CalibTracker/SiStripCommon/interface/ShallowSimTracksProducer.h"
#include "CalibTracker/SiStripCommon/interface/ShallowTools.h"

#include "FWCore/Framework/interface/Event.h"
#include "FWCore/Framework/interface/ESHandle.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"
#include "DataFormats/RecoCandidate/interface/TrackAssociation.h"

#include "FWCore/MessageLogger/interface/MessageLogger.h"

ShallowSimTracksProducer::ShallowSimTracksProducer(const edm::ParameterSet& conf) 
  : Prefix( conf.getParameter<std::string>("Prefix") ),
    Suffix( conf.getParameter<std::string>("Suffix") ),
    trackingParticles_token_(consumes<TrackingParticleCollection>(conf.getParameter<edm::InputTag>("TrackingParticles"))),
    associator_token_( consumes<reco::TrackToTrackingParticleAssociator>(conf.getParameter<edm::InputTag>("Associator"))),
    tracks_token_(consumes<edm::View<reco::Track> >(conf.getParameter<edm::InputTag>("Tracks")))
{
  produces <std::vector<unsigned> >     ( Prefix + "multi"      + Suffix );
  produces <std::vector<int> >          ( Prefix + "type"      + Suffix );
  produces <std::vector<float> >        ( Prefix + "charge"    + Suffix );
  produces <std::vector<float> >        ( Prefix + "momentum"  + Suffix );
  produces <std::vector<float> >        ( Prefix + "pt"        + Suffix );
  produces <std::vector<double> >       ( Prefix + "theta"     + Suffix );
  produces <std::vector<double> >       ( Prefix + "phi"       + Suffix );
  produces <std::vector<double> >       ( Prefix + "eta"       + Suffix );
  produces <std::vector<double> >       ( Prefix + "qoverp"    + Suffix );
  produces <std::vector<double> >       ( Prefix + "vx"        + Suffix );
  produces <std::vector<double> >       ( Prefix + "vy"        + Suffix );
  produces <std::vector<double> >       ( Prefix + "vz"        + Suffix );
}


void ShallowSimTracksProducer::
produce(edm::Event& event, const edm::EventSetup& setup) {

  edm::Handle<edm::View<reco::Track> >                     tracks ;   event.getByToken(tracks_token_, tracks);
  edm::Handle<TrackingParticleCollection>       trackingParticles ;   event.getByToken(trackingParticles_token_, trackingParticles );  
  edm::Handle<reco::TrackToTrackingParticleAssociator> associator ;   event.getByToken(associator_token_, associator);

  unsigned size = tracks->size();
  auto   multi        = std::make_unique<std::vector<unsigned>>(size,    0);
  auto   type         = std::make_unique<std::vector<int>>     (size,    0);
  auto   charge       = std::make_unique<std::vector<float>>   (size,    0);
  auto   momentum     = std::make_unique<std::vector<float>>   (size,   -1);
  auto   pt           = std::make_unique<std::vector<float>>   (size,   -1);
  auto   theta        = std::make_unique<std::vector<double>>  (size,-1000);
  auto   phi          = std::make_unique<std::vector<double>>  (size,-1000);
  auto   eta          = std::make_unique<std::vector<double>>  (size,-1000);
  auto   dxy          = std::make_unique<std::vector<double>>  (size,-1000);
  auto   dsz          = std::make_unique<std::vector<double>>  (size,-1000);
  auto   qoverp       = std::make_unique<std::vector<double>>  (size,-1000);
  auto   vx           = std::make_unique<std::vector<double>>  (size,-1000);
  auto   vy           = std::make_unique<std::vector<double>>  (size,-1000);
  auto   vz           = std::make_unique<std::vector<double>>  (size,-1000);

  reco::RecoToSimCollection associations = associator->associateRecoToSim( tracks, trackingParticles);
  
  for( reco::RecoToSimCollection::const_iterator association = associations.begin(); 
       association != associations.end(); association++) {

    const reco::Track* track = association->key.get();
    const int matches        = association->val.size();
    if(matches>0) {
      const TrackingParticle* tparticle = association->val[0].first.get();
      unsigned i = shallow::findTrackIndex(tracks, track);

      multi->at(i) = matches;
      type->at(i)  = tparticle->pdgId();
      charge->at(i)= tparticle->charge();
      momentum->at(i)=tparticle->p() ;
      pt->at(i) = tparticle->pt()    ;
      theta->at(i) = tparticle->theta() ;
      phi->at(i)   = tparticle->phi()   ;
      eta->at(i)   = tparticle->eta()   ;
      qoverp->at(i)= tparticle->charge()/tparticle->p();

      const TrackingVertex* tvertex = tparticle->parentVertex().get();
      vx->at(i) = tvertex->position().x();
      vy->at(i) = tvertex->position().y();
      vz->at(i) = tvertex->position().z();
    }
  }
  
  event.put(std::move(multi   ), Prefix + "multi"     + Suffix );
  event.put(std::move(type    ), Prefix + "type"      + Suffix );
  event.put(std::move(charge  ), Prefix + "charge"    + Suffix );
  event.put(std::move(momentum), Prefix + "momentum"  + Suffix );
  event.put(std::move(pt      ), Prefix + "pt"        + Suffix );
  event.put(std::move(theta   ), Prefix + "theta"     + Suffix );
  event.put(std::move(phi     ), Prefix + "phi"       + Suffix );
  event.put(std::move(eta     ), Prefix + "eta"       + Suffix );
  event.put(std::move(qoverp  ), Prefix + "qoverp"    + Suffix );
  event.put(std::move(vx      ), Prefix + "vx"        + Suffix );
  event.put(std::move(vy      ), Prefix + "vy"        + Suffix );
  event.put(std::move(vz      ), Prefix + "vz"        + Suffix );
  
}