/data/refman/pasoursint/CMSSW_6_1_2_SLHC2/src/RecoTracker/TrackProducer/src/KfTrackProducerBase.cc

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#include "RecoTracker/TrackProducer/interface/KfTrackProducerBase.h"
// system include files
#include <memory>
// user include files
#include "DataFormats/TrackReco/interface/TrackResiduals.h"
#include "FWCore/Framework/interface/Frameworkfwd.h"
#include "FWCore/Framework/interface/MakerMacros.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "TrackingTools/GeomPropagators/interface/Propagator.h"
#include "TrackingTools/PatternTools/interface/Trajectory.h"

#include "TrackingTools/PatternTools/interface/TrajTrackAssociation.h"

#include "Geometry/TrackerGeometryBuilder/interface/TrackerGeometry.h"

#include "RecoTracker/TrackProducer/interface/ClusterRemovalRefSetter.h"
#include "TrajectoryToResiduals.h"

void KfTrackProducerBase::putInEvt(edm::Event& evt,
                                   const Propagator* prop,
                                   const MeasurementTracker* measTk,
                                   std::auto_ptr<TrackingRecHitCollection>& selHits,
                                   std::auto_ptr<reco::TrackCollection>& selTracks,
                                   std::auto_ptr<reco::TrackExtraCollection>& selTrackExtras,
                                   std::auto_ptr<std::vector<Trajectory> >&   selTrajectories,
                                   AlgoProductCollection& algoResults)
{

  TrackingRecHitRefProd rHits = evt.getRefBeforePut<TrackingRecHitCollection>();
  reco::TrackExtraRefProd rTrackExtras = evt.getRefBeforePut<reco::TrackExtraCollection>();

  edm::Ref<reco::TrackExtraCollection>::key_type idx = 0;
  edm::Ref<reco::TrackExtraCollection>::key_type hidx = 0;
  edm::Ref<reco::TrackCollection>::key_type iTkRef = 0;
  edm::Ref< std::vector<Trajectory> >::key_type iTjRef = 0;
  std::map<unsigned int, unsigned int> tjTkMap;

  for(AlgoProductCollection::iterator i=algoResults.begin(); i!=algoResults.end();i++){
    Trajectory * theTraj = (*i).first;
    if(trajectoryInEvent_) {
      selTrajectories->push_back(*theTraj);
      iTjRef++;
    }

    // const TrajectoryFitter::RecHitContainer& transHits = theTraj->recHits(useSplitting);  // NO: the return type in Trajectory is by VALUE
    TrajectoryFitter::RecHitContainer transHits = theTraj->recHits(useSplitting);

    reco::Track * theTrack = (*i).second.first;
    
    // Hits are going to be re-sorted along momentum few lines later. 
    // Therefore the direction stored in the TrackExtra 
    // has to be "alongMomentum" as well. Anyway, this direction can be differnt from the one of the orignal
    // seed! The name seedDirection() for the Track's method (and the corresponding data member) is
    // misleading and should be changed into something like "hitsDirection()". TO BE FIXED!
    PropagationDirection seedDir = alongMomentum;

    LogDebug("TrackProducer") << "In KfTrackProducerBase::putInEvt - seedDir=" << seedDir;

    reco::Track t = * theTrack;
    selTracks->push_back( t );
    iTkRef++;

    // Store indices in local map (starts at 0)
    if(trajectoryInEvent_) tjTkMap[iTjRef-1] = iTkRef-1;
    
    //sets the outermost and innermost TSOSs
    TrajectoryStateOnSurface outertsos;
    TrajectoryStateOnSurface innertsos;
    unsigned int innerId, outerId;
    
    // ---  NOTA BENE: the convention is to sort hits and measurements "along the momentum".
    // This is consistent with innermost and outermost labels only for tracks from LHC collision
    if (theTraj->direction() == alongMomentum) {
      outertsos = theTraj->lastMeasurement().updatedState();
      innertsos = theTraj->firstMeasurement().updatedState();
      outerId = theTraj->lastMeasurement().recHit()->geographicalId().rawId();
      innerId = theTraj->firstMeasurement().recHit()->geographicalId().rawId();
    } else { 
      outertsos = theTraj->firstMeasurement().updatedState();
      innertsos = theTraj->lastMeasurement().updatedState();
      outerId = theTraj->firstMeasurement().recHit()->geographicalId().rawId();
      innerId = theTraj->lastMeasurement().recHit()->geographicalId().rawId();
    }
    // ---
    //build the TrackExtra
    GlobalPoint v = outertsos.globalParameters().position();
    GlobalVector p = outertsos.globalParameters().momentum();
    math::XYZVector outmom( p.x(), p.y(), p.z() );
    math::XYZPoint  outpos( v.x(), v.y(), v.z() );
    v = innertsos.globalParameters().position();
    p = innertsos.globalParameters().momentum();
    math::XYZVector inmom( p.x(), p.y(), p.z() );
    math::XYZPoint  inpos( v.x(), v.y(), v.z() );

    reco::TrackExtraRef teref= reco::TrackExtraRef ( rTrackExtras, idx ++ );
    reco::Track & track = selTracks->back();
    track.setExtra( teref );
    
    //======= I want to set the second hitPattern here =============
    if (theSchool.isValid())
      {
        NavigationSetter setter( *theSchool );
        setSecondHitPattern(theTraj,track,prop,measTk);
      }
    //==============================================================
    
    selTrackExtras->push_back( reco::TrackExtra (outpos, outmom, true, inpos, inmom, true,
                                                 outertsos.curvilinearError(), outerId,
                                                 innertsos.curvilinearError(), innerId,
                                                 seedDir, theTraj->seedRef()));


    reco::TrackExtra & tx = selTrackExtras->back();
    
    // ---  NOTA BENE: the convention is to sort hits and measurements "along the momentum".
    // This is consistent with innermost and outermost labels only for tracks from LHC collisions
    size_t ih = 0;
    if (theTraj->direction() == alongMomentum) {
      for( TrajectoryFitter::RecHitContainer::const_iterator j = transHits.begin();
           j != transHits.end(); j ++ ) {
        if ((**j).hit()!=0){
          TrackingRecHit * hit = (**j).hit()->clone();
          track.setHitPattern( * hit, ih ++ );
          selHits->push_back( hit );
          tx.add( TrackingRecHitRef( rHits, hidx ++ ) );
        }
      }
    }else{
      for( TrajectoryFitter::RecHitContainer::const_iterator j = transHits.end()-1;
           j != transHits.begin()-1; --j ) {
        if ((**j).hit()!=0){
          TrackingRecHit * hit = (**j).hit()->clone();
          track.setHitPattern( * hit, ih ++ );
          selHits->push_back( hit );
        tx.add( TrackingRecHitRef( rHits, hidx ++ ) );
        }
      }
    }
    // ----
    tx.setResiduals(trajectoryToResiduals(*theTraj));

    delete theTrack;
    delete theTraj;
  }

  // Now we can re-set refs to hits, as they have already been cloned
  if (rekeyClusterRefs_) {
      ClusterRemovalRefSetter refSetter(evt, clusterRemovalInfo_);
      for (TrackingRecHitCollection::iterator it = selHits->begin(), ed = selHits->end(); it != ed; ++it) {
          refSetter.reKey(&*it);
      }
  }

  LogTrace("TrackingRegressionTest") << "========== TrackProducer Info ===================";
  LogTrace("TrackingRegressionTest") << "number of finalTracks: " << selTracks->size();
  for (reco::TrackCollection::const_iterator it = selTracks->begin(); it != selTracks->end(); it++) {
    LogTrace("TrackingRegressionTest") << "track's n valid and invalid hit, chi2, pt, eta : " 
                                       << it->found() << " , " 
                                       << it->lost()  <<" , " 
                                       << it->normalizedChi2() << " , "
                                       << it->pt() << " , "
                                       << it->eta() ;
  }
  LogTrace("TrackingRegressionTest") << "=================================================";
  
  
  rTracks_ = evt.put( selTracks );
  evt.put( selTrackExtras );
  evt.put( selHits );

  if(trajectoryInEvent_) {
    edm::OrphanHandle<std::vector<Trajectory> > rTrajs = evt.put(selTrajectories);

    // Now Create traj<->tracks association map
    std::auto_ptr<TrajTrackAssociationCollection> trajTrackMap( new TrajTrackAssociationCollection() );
    for ( std::map<unsigned int, unsigned int>::iterator i = tjTkMap.begin(); 
          i != tjTkMap.end(); i++ ) {
      edm::Ref<std::vector<Trajectory> > trajRef( rTrajs, (*i).first );
      edm::Ref<reco::TrackCollection>    tkRef( rTracks_, (*i).second );
      trajTrackMap->insert( edm::Ref<std::vector<Trajectory> >( rTrajs, (*i).first ),
                            edm::Ref<reco::TrackCollection>( rTracks_, (*i).second ) );
    }
    evt.put( trajTrackMap );
  }
}