TrackAndHCALLinker Class Reference

Inheritance diagram for TrackAndHCALLinker:

Public Member Functions
bool	linkPrefilter (const reco::PFBlockElement *, const reco::PFBlockElement *) const override
double	testLink (const reco::PFBlockElement *, const reco::PFBlockElement *) const override
	TrackAndHCALLinker (const edm::ParameterSet &conf)
Public Member Functions inherited from BlockElementLinkerBase
	BlockElementLinkerBase (const edm::ParameterSet &conf)
	BlockElementLinkerBase (const BlockElementLinkerBase &)=delete
const std::string &	name () const
BlockElementLinkerBase &	operator= (const BlockElementLinkerBase &)=delete
virtual	~BlockElementLinkerBase ()=default

Private Attributes
bool	checkExit_
bool	debug_
reco::PFTrajectoryPoint::LayerType	trajectoryLayerEntrance_
std::string	trajectoryLayerEntranceString_
reco::PFTrajectoryPoint::LayerType	trajectoryLayerExit_
std::string	trajectoryLayerExitString_
bool	useKDTree_

Detailed Description

Definition at line 10 of file TrackAndHCALLinker.cc.

Constructor & Destructor Documentation

TrackAndHCALLinker()

TrackAndHCALLinker::TrackAndHCALLinker ( const edm::ParameterSet &  conf )

inline

Definition at line 12 of file TrackAndHCALLinker.cc.

References cms::cuda::assert(), checkExit_, reco::PFTrajectoryPoint::HCALEntrance, reco::PFTrajectoryPoint::HCALExit, reco::PFTrajectoryPoint::layerTypeByName(), trajectoryLayerEntrance_, trajectoryLayerEntranceString_, trajectoryLayerExit_, trajectoryLayerExitString_, reco::PFTrajectoryPoint::Unknown, and reco::PFTrajectoryPoint::VFcalEntrance.

      : BlockElementLinkerBase(conf),
        useKDTree_(conf.getParameter<bool>("useKDTree")),
        trajectoryLayerEntranceString_(conf.getParameter<std::string>("trajectoryLayerEntrance")),
        trajectoryLayerExitString_(conf.getParameter<std::string>("trajectoryLayerExit")),
        debug_(conf.getUntrackedParameter<bool>("debug", false)) {
    // convert TrajectoryLayers info from string to enum
    trajectoryLayerEntrance_ = reco::PFTrajectoryPoint::layerTypeByName(trajectoryLayerEntranceString_);
    trajectoryLayerExit_ = reco::PFTrajectoryPoint::layerTypeByName(trajectoryLayerExitString_);
    // make sure the requested setting is supported
    assert((trajectoryLayerEntrance_ == reco::PFTrajectoryPoint::HCALEntrance &&
            trajectoryLayerExit_ == reco::PFTrajectoryPoint::HCALExit) ||
           (trajectoryLayerEntrance_ == reco::PFTrajectoryPoint::HCALEntrance &&
            trajectoryLayerExit_ == reco::PFTrajectoryPoint::Unknown) ||
           (trajectoryLayerEntrance_ == reco::PFTrajectoryPoint::VFcalEntrance &&
            trajectoryLayerExit_ == reco::PFTrajectoryPoint::Unknown));
    // flag if exit layer should be checked or not
    checkExit_ = trajectoryLayerExit_ != reco::PFTrajectoryPoint::Unknown;
  }

Member Function Documentation

linkPrefilter()

bool TrackAndHCALLinker::linkPrefilter ( const reco::PFBlockElement *  elem1, const reco::PFBlockElement *  elem2  ) const

overridevirtual

Reimplemented from BlockElementLinkerBase.

Definition at line 48 of file TrackAndHCALLinker.cc.

References relativeConstraints::empty, reco::PFBlockElement::getMultilinks(), reco::PFBlockElement::HCAL, reco::PFBlockElement::isMultilinksValide(), mps_fire::result, reco::PFBlockElement::TRACK, reco::PFBlockElement::type(), and useKDTree_.

                                                                                                             {
  bool result = false;
  // Track-HCAL KDTree multilinks are stored to track's elem
  switch (elem1->type()) {
    case reco::PFBlockElement::TRACK:
      result = (elem1->isMultilinksValide(elem2->type()) && !elem1->getMultilinks(elem2->type()).empty() &&
                elem2->isMultilinksValide(elem1->type()));
      break;
    case reco::PFBlockElement::HCAL:
      result = (elem2->isMultilinksValide(elem1->type()) && !elem2->getMultilinks(elem1->type()).empty() &&
                elem1->isMultilinksValide(elem2->type()));
    default:
      break;
  }
  return (useKDTree_ ? result : true);
}

testLink()

double TrackAndHCALLinker::testLink ( const reco::PFBlockElement *  elem1, const reco::PFBlockElement *  elem2  ) const

overridevirtual

Implements BlockElementLinkerBase.

Definition at line 65 of file TrackAndHCALLinker.cc.

References checkExit_, reco::PFBlockElementCluster::clusterRef(), LinkByRecHit::computeDist(), debug_, reco::deltaPhi(), reco::PFBlockElement::getMultilinks(), reco::PFBlockElement::isMultilinksValide(), reco::PFTrajectoryPoint::isValid(), reco::PFTrajectoryPoint::position(), reco::PFTrajectoryPoint::positionREP(), LinkByRecHit::testTrackAndClusterByRecHit(), reco::PFBlockElementTrack::trackRefPF(), trajectoryLayerEntrance_, trajectoryLayerExit_, reco::PFBlockElement::type(), and useKDTree_.

                                                                                                          {
  const reco::PFBlockElementCluster* hcalelem(nullptr);
  const reco::PFBlockElementTrack* tkelem(nullptr);
  double dist(-1.0);
  if (elem1->type() < elem2->type()) {
    tkelem = static_cast<const reco::PFBlockElementTrack*>(elem1);
    hcalelem = static_cast<const reco::PFBlockElementCluster*>(elem2);
  } else {
    tkelem = static_cast<const reco::PFBlockElementTrack*>(elem2);
    hcalelem = static_cast<const reco::PFBlockElementCluster*>(elem1);
  }
  const reco::PFRecTrackRef& trackref = tkelem->trackRefPF();
  const reco::PFClusterRef& clusterref = hcalelem->clusterRef();
  const reco::PFCluster::REPPoint& hcalreppos = clusterref->positionREP();
  const reco::PFTrajectoryPoint& tkAtHCALEnt = trackref->extrapolatedPoint(trajectoryLayerEntrance_);
  const reco::PFCluster::REPPoint& tkreppos = tkAtHCALEnt.positionREP();
  // Check exit point
  double dHEta = 0.;
  double dHPhi = 0.;
  double dRHCALEx = 0.;
  if (checkExit_) {
    const reco::PFTrajectoryPoint& tkAtHCALEx = trackref->extrapolatedPoint(trajectoryLayerExit_);
    dHEta = (tkAtHCALEx.positionREP().Eta() - tkAtHCALEnt.positionREP().Eta());
    dHPhi = reco::deltaPhi(tkAtHCALEx.positionREP().Phi(), tkAtHCALEnt.positionREP().Phi());
    dRHCALEx = tkAtHCALEx.position().R();
  }

  // Check if the linking has been done using the KDTree algo
  // Glowinski & Gouzevitch
  if (useKDTree_ && tkelem->isMultilinksValide(hcalelem->type())) {  //KDTree Algo
    const reco::PFMultilinksType& multilinks = tkelem->getMultilinks(hcalelem->type());

    // Check if the link Track/Hcal exist
    reco::PFMultilinksType::const_iterator mlit = multilinks.begin();
    for (; mlit != multilinks.end(); ++mlit)
      if (mlit->clusterRef == clusterref)
        break;

    // If the link exist, we fill dist and linktest.

    if (mlit != multilinks.end()) {
      // when checkExit_ is false
      if (!checkExit_) {
        dist = LinkByRecHit::computeDist(hcalreppos.Eta(), hcalreppos.Phi(), tkreppos.Eta(), tkreppos.Phi());
      }
      // when checkExit_ is true
      else {
        //special case ! A looper  can exit the barrel inwards and hit the endcap
        //In this case calculate the distance based on the first crossing since
        //the looper will probably never make it to the endcap
        if (dRHCALEx < tkAtHCALEnt.position().R()) {
          dist = LinkByRecHit::computeDist(hcalreppos.Eta(), hcalreppos.Phi(), tkreppos.Eta(), tkreppos.Phi());
          edm::LogWarning("TrackHCALLinker ")
              << "Special case of linking with track hitting HCAL and looping back in the tracker ";
        } else {
          dist = LinkByRecHit::computeDist(
              hcalreppos.Eta(), hcalreppos.Phi(), tkreppos.Eta() + 0.1 * dHEta, tkreppos.Phi() + 0.1 * dHPhi);
        }
      }  // checkExit_
    }    // multilinks

  } else {  // Old algorithm
    if (tkAtHCALEnt.isValid())
      dist = LinkByRecHit::testTrackAndClusterByRecHit(*trackref, *clusterref, false, debug_);
  }
  return dist;
}

Member Data Documentation

checkExit_

bool TrackAndHCALLinker::checkExit_

private

Definition at line 43 of file TrackAndHCALLinker.cc.

Referenced by testLink(), and TrackAndHCALLinker().

debug_

bool TrackAndHCALLinker::debug_

private

Definition at line 42 of file TrackAndHCALLinker.cc.

Referenced by testLink().

trajectoryLayerEntrance_

reco::PFTrajectoryPoint::LayerType TrackAndHCALLinker::trajectoryLayerEntrance_

private

Definition at line 40 of file TrackAndHCALLinker.cc.

Referenced by testLink(), and TrackAndHCALLinker().

trajectoryLayerEntranceString_

std::string TrackAndHCALLinker::trajectoryLayerEntranceString_

private

Definition at line 38 of file TrackAndHCALLinker.cc.

Referenced by TrackAndHCALLinker().

trajectoryLayerExit_

reco::PFTrajectoryPoint::LayerType TrackAndHCALLinker::trajectoryLayerExit_

private

Definition at line 41 of file TrackAndHCALLinker.cc.

Referenced by testLink(), and TrackAndHCALLinker().

trajectoryLayerExitString_

std::string TrackAndHCALLinker::trajectoryLayerExitString_

private

Definition at line 39 of file TrackAndHCALLinker.cc.

Referenced by TrackAndHCALLinker().

useKDTree_

bool TrackAndHCALLinker::useKDTree_

private

Definition at line 37 of file TrackAndHCALLinker.cc.

Referenced by linkPrefilter(), and testLink().