#include <SeedGeneratorFromProtoTracksEDProducer.h>

Inheritance diagram for SeedGeneratorFromProtoTracksEDProducer:

Public Member Functions
virtual void	produce (edm::Event &ev, const edm::EventSetup &es)
	SeedGeneratorFromProtoTracksEDProducer (const edm::ParameterSet &cfg)
virtual	~SeedGeneratorFromProtoTracksEDProducer ()
Private Attributes
std::string	builderName
double	originHalfLength
double	originRadius
edm::ParameterSet	theConfig
edm::InputTag	theInputCollectionTag
edm::InputTag	theInputVertexCollectionTag
bool	useEventsWithNoVertex
bool	useProtoTrackKinematics

Detailed Description

Definition at line 11 of file SeedGeneratorFromProtoTracksEDProducer.h.

Constructor & Destructor Documentation

SeedGeneratorFromProtoTracksEDProducer::SeedGeneratorFromProtoTracksEDProducer ( const edm::ParameterSet & cfg )

Definition at line 35 of file SeedGeneratorFromProtoTracksEDProducer.cc.

  : theConfig(cfg), 
    theInputCollectionTag(cfg.getParameter<InputTag>("InputCollection")),
    theInputVertexCollectionTag(cfg.getParameter<InputTag>("InputVertexCollection")),
    originHalfLength(cfg.getParameter<double>("originHalfLength")),
    originRadius(cfg.getParameter<double>("originRadius")),
    useProtoTrackKinematics(cfg.getParameter<bool>("useProtoTrackKinematics")),
    useEventsWithNoVertex(cfg.getParameter<bool>("useEventsWithNoVertex")),
    builderName(cfg.getParameter<std::string>("TTRHBuilder"))

{
  produces<TrajectorySeedCollection>();
}

virtual SeedGeneratorFromProtoTracksEDProducer::~SeedGeneratorFromProtoTracksEDProducer ( ) [inline, virtual]

Definition at line 14 of file SeedGeneratorFromProtoTracksEDProducer.h.

{}

Member Function Documentation

void SeedGeneratorFromProtoTracksEDProducer::produce	(	edm::Event &	ev,
		const edm::EventSetup &	es
	)		`[virtual]`

Implements edm::EDProducer.

Definition at line 49 of file SeedGeneratorFromProtoTracksEDProducer.cc.

References builderName, edm::EventSetup::get(), edm::Event::getByLabel(), SeedFromProtoTrack::isValid(), reco::TrackBase::momentum(), SeedingHitSet::nullPtr(), originHalfLength, originRadius, edm::Handle< T >::product(), edm::Event::put(), reco::Track::recHit(), reco::Track::recHitsSize(), query::result, SeedFromConsecutiveHitsCreator_cfi::SeedFromConsecutiveHitsCreator, python::multivaluedict::sort(), funct::sqr(), mathSSE::sqrt(), theInputCollectionTag, theInputVertexCollectionTag, SeedFromProtoTrack::trajectorySeed(), useEventsWithNoVertex, useProtoTrackKinematics, and reco::TrackBase::vertex().

{
  std::auto_ptr<TrajectorySeedCollection> result(new TrajectorySeedCollection());
  Handle<reco::TrackCollection> trks;
  ev.getByLabel(theInputCollectionTag, trks);

  const TrackCollection &protos = *(trks.product());
  
  edm::Handle<reco::VertexCollection> vertices;
  bool foundVertices = ev.getByLabel(theInputVertexCollectionTag, vertices);
  //const reco::VertexCollection & vertices = *(h_vertices.product());

  for (TrackCollection::const_iterator it=protos.begin(); it!= protos.end(); ++it) {
    const Track & proto = (*it);
    GlobalPoint vtx(proto.vertex().x(), proto.vertex().y(), proto.vertex().z());

    // check the compatibility with a primary vertex
    bool keepTrack = false;
    if ( !foundVertices ) { 
          if (useEventsWithNoVertex) keepTrack = true;
    } else { 
      for (reco::VertexCollection::const_iterator iv=vertices->begin(); iv!= vertices->end(); ++iv) {
        GlobalPoint aPV(iv->position().x(),iv->position().y(),iv->position().z());
        double distR2 = sqr(vtx.x()-aPV.x()) +sqr(vtx.y()-aPV.y());
        double distZ = fabs(vtx.z()-aPV.z());
        if ( distR2 < sqr(originRadius) && distZ < originHalfLength ) { 
          keepTrack = true;
          break;
        }
      }
    }
    if (!keepTrack) continue;

    if ( useProtoTrackKinematics ) {
      SeedFromProtoTrack seedFromProtoTrack( proto, es);
      if (seedFromProtoTrack.isValid()) (*result).push_back( seedFromProtoTrack.trajectorySeed() );
    } else {
      edm::ESHandle<TransientTrackingRecHitBuilder> ttrhbESH;
      es.get<TransientRecHitRecord>().get(builderName,ttrhbESH);
      std::vector<Hit> hits;
      for (unsigned int iHit = 0, nHits = proto.recHitsSize(); iHit < nHits; ++iHit) {
        TrackingRecHitRef refHit = proto.recHit(iHit);
        if(refHit->isValid()) hits.push_back(ttrhbESH->build(  &(*refHit) ));
      }
      sort(hits.begin(), hits.end(), HitLessByRadius());
      assert(hits.size()<4);
      if (hits.size() > 1) {
        double mom_perp = sqrt(proto.momentum().x()*proto.momentum().x()+proto.momentum().y()*proto.momentum().y());
        GlobalTrackingRegion region(mom_perp, vtx, 0.2, 0.2);
        SeedFromConsecutiveHitsCreator().trajectorySeed(*result, SeedingHitSet(hits[0], hits[1], hits.size() >2 ? hits[2] : SeedingHitSet::nullPtr() ), region, es, 0);
      }
    }
  } 

  ev.put(result);
}