#include <PointSeededTrackingRegionsProducer.h>

Inheritance diagram for PointSeededTrackingRegionsProducer:

Public Types
enum	Mode { BEAM_SPOT_FIXED, BEAM_SPOT_SIGMA, VERTICES_FIXED, VERTICES_SIGMA }

Public Member Functions
	PointSeededTrackingRegionsProducer (const edm::ParameterSet &conf, edm::ConsumesCollector &&iC)

virtual std::vector < TrackingRegion * >	regions (const edm::Event &e, const edm::EventSetup &es) const

virtual	~PointSeededTrackingRegionsProducer ()

Public Member Functions inherited from TrackingRegionProducer
virtual	~TrackingRegionProducer ()

Private Attributes
double	eta_input

float	m_deltaEta

float	m_deltaPhi

int	m_maxNRegions

int	m_maxNVertices

Mode	m_mode

float	m_nSigmaZBeamSpot

float	m_nSigmaZVertex

float	m_originRadius

bool	m_precise

float	m_ptMin

bool	m_searchOpt

RectangularEtaPhiTrackingRegion::UseMeasurementTracker	m_whereToUseMeasurementTracker

float	m_zErrorBeamSpot

float	m_zErrorVetex

double	phi_input

edm::EDGetTokenT< reco::BeamSpot >	token_beamSpot

edm::EDGetTokenT < MeasurementTrackerEvent >	token_measurementTracker

edm::EDGetTokenT < reco::VertexCollection >	token_vertex

Detailed Description

class PointSeededTrackingRegionsProducer

eta-phi TrackingRegions producer in directions defined by Point-based objects of interest from the "input" parameters.

Four operational modes are supported ("mode" parameter):

BeamSpotFixed: origin is defined by the beam spot z-half-length is defined by a fixed zErrorBeamSpot parameter BeamSpotSigma: origin is defined by the beam spot z-half-length is defined by nSigmaZBeamSpot * beamSpot.sigmaZ VerticesFixed: origins are defined by vertices from VertexCollection (use maximum MaxNVertices of them) z-half-length is defined by a fixed zErrorVetex parameter VerticesSigma: origins are defined by vertices from VertexCollection (use maximum MaxNVertices of them) z-half-length is defined by nSigmaZVertex * vetex.zError

If, while using one of the "Vertices" modes, there's no vertices in an event, we fall back into either BeamSpotSigma or BeamSpotFixed mode, depending on the positiveness of nSigmaZBeamSpot.

Definition at line 48 of file PointSeededTrackingRegionsProducer.h.

Member Enumeration Documentation

enum PointSeededTrackingRegionsProducer::Mode

Enumerator
BEAM_SPOT_FIXED
BEAM_SPOT_SIGMA
VERTICES_FIXED
VERTICES_SIGMA

Definition at line 52 of file PointSeededTrackingRegionsProducer.h.

52 {BEAM_SPOT_FIXED, BEAM_SPOT_SIGMA, VERTICES_FIXED, VERTICES_SIGMA } Mode;

PointSeededTrackingRegionsProducer::VERTICES_FIXED

Definition: PointSeededTrackingRegionsProducer.h:52

PointSeededTrackingRegionsProducer::Mode

Mode

Definition: PointSeededTrackingRegionsProducer.h:52

PointSeededTrackingRegionsProducer::VERTICES_SIGMA

Definition: PointSeededTrackingRegionsProducer.h:52

PointSeededTrackingRegionsProducer::BEAM_SPOT_FIXED

Definition: PointSeededTrackingRegionsProducer.h:52

PointSeededTrackingRegionsProducer::BEAM_SPOT_SIGMA

Definition: PointSeededTrackingRegionsProducer.h:52

Constructor & Destructor Documentation

PointSeededTrackingRegionsProducer::PointSeededTrackingRegionsProducer	(	const edm::ParameterSet &	conf,
		edm::ConsumesCollector &&	iC
	)

inlineexplicit

Definition at line 54 of file PointSeededTrackingRegionsProducer.h.

References BEAM_SPOT_FIXED, BEAM_SPOT_SIGMA, RectangularEtaPhiTrackingRegion::doubleToUseMeasurementTracker(), eta_input, edm::ParameterSet::exists(), edm::ParameterSet::getParameter(), RectangularEtaPhiTrackingRegion::kForSiStrips, RectangularEtaPhiTrackingRegion::kNever, m_deltaEta, m_deltaPhi, m_maxNRegions, m_maxNVertices, m_mode, m_nSigmaZBeamSpot, m_nSigmaZVertex, m_originRadius, m_precise, m_ptMin, m_searchOpt, m_whereToUseMeasurementTracker, m_zErrorBeamSpot, m_zErrorVetex, phi_input, AlCaHLTBitMon_QueryRunRegistry::string, token_beamSpot, token_measurementTracker, token_vertex, VERTICES_FIXED, and VERTICES_SIGMA.

   {
     edm::ParameterSet regPSet = conf.getParameter<edm::ParameterSet>("RegionPSet");
 
     // operation mode
     std::string modeString       = regPSet.getParameter<std::string>("mode");
     if      (modeString == "BeamSpotFixed") m_mode = BEAM_SPOT_FIXED;
     else if (modeString == "BeamSpotSigma") m_mode = BEAM_SPOT_SIGMA;
     else if (modeString == "VerticesFixed") m_mode = VERTICES_FIXED;
     else if (modeString == "VerticesSigma") m_mode = VERTICES_SIGMA;
     else  edm::LogError ("PointSeededTrackingRegionsProducer")<<"Unknown mode string: "<<modeString;
 
     // basic inputs
     edm::ParameterSet point_input = regPSet.getParameter<edm::ParameterSet>("point_input");
     eta_input          = point_input.getParameter<double>("eta");
     phi_input          = point_input.getParameter<double>("phi");
     m_maxNRegions      = regPSet.getParameter<int>("maxNRegions");
     token_beamSpot     = iC.consumes<reco::BeamSpot>(regPSet.getParameter<edm::InputTag>("beamSpot"));
     m_maxNVertices     = 1;
     if (m_mode == VERTICES_FIXED || m_mode == VERTICES_SIGMA)
     {
       token_vertex       = iC.consumes<reco::VertexCollection>(regPSet.getParameter<edm::InputTag>("vertexCollection"));
       m_maxNVertices     = regPSet.getParameter<int>("maxNVertices");
     }
 
     // RectangularEtaPhiTrackingRegion parameters:
     m_ptMin            = regPSet.getParameter<double>("ptMin");
     m_originRadius     = regPSet.getParameter<double>("originRadius");
     m_zErrorBeamSpot   = regPSet.getParameter<double>("zErrorBeamSpot");
     m_deltaEta         = regPSet.getParameter<double>("deltaEta");
     m_deltaPhi         = regPSet.getParameter<double>("deltaPhi");
     m_precise          = regPSet.getParameter<bool>("precise");
     m_whereToUseMeasurementTracker = RectangularEtaPhiTrackingRegion::UseMeasurementTracker::kForSiStrips;
     if (regPSet.exists("measurementTrackerName"))
     {
       // FIXME: when next time altering the configuration of this
       // class, please change the types of the following parameters:
       // - whereToUseMeasurementTracker to at least int32 or to a string
       //   corresponding to the UseMeasurementTracker enumeration
       // - measurementTrackerName to InputTag
       if (regPSet.exists("whereToUseMeasurementTracker"))
         m_whereToUseMeasurementTracker = RectangularEtaPhiTrackingRegion::doubleToUseMeasurementTracker(regPSet.getParameter<double>("whereToUseMeasurementTracker"));
       if(m_whereToUseMeasurementTracker != RectangularEtaPhiTrackingRegion::UseMeasurementTracker::kNever)
         token_measurementTracker = iC.consumes<MeasurementTrackerEvent>(regPSet.getParameter<std::string>("measurementTrackerName"));
     }
     m_searchOpt = false;
     if (regPSet.exists("searchOpt")) m_searchOpt = regPSet.getParameter<bool>("searchOpt");
 
     // mode-dependent z-halflength of tracking regions
     if (m_mode == VERTICES_SIGMA)  m_nSigmaZVertex   = regPSet.getParameter<double>("nSigmaZVertex");
     if (m_mode == VERTICES_FIXED)  m_zErrorVetex     = regPSet.getParameter<double>("zErrorVetex");
     m_nSigmaZBeamSpot = -1.;
     if (m_mode == BEAM_SPOT_SIGMA)
     {
       m_nSigmaZBeamSpot = regPSet.getParameter<double>("nSigmaZBeamSpot");
       if (m_nSigmaZBeamSpot < 0.)
         edm::LogError ("PointSeededTrackingRegionsProducer")<<"nSigmaZBeamSpot must be positive for BeamSpotSigma mode!";
     }
   }

virtual PointSeededTrackingRegionsProducer::~PointSeededTrackingRegionsProducer ( )

inlinevirtual

Definition at line 115 of file PointSeededTrackingRegionsProducer.h.

115 {}

Member Function Documentation

virtual std::vector<TrackingRegion* > PointSeededTrackingRegionsProducer::regions	(	const edm::Event &	e,
		const edm::EventSetup &	es
	)		const

inlinevirtual

Implements TrackingRegionProducer.

Definition at line 118 of file PointSeededTrackingRegionsProducer.h.

References BEAM_SPOT_FIXED, BEAM_SPOT_SIGMA, eta_input, ev, plotBeamSpotDB::first, edm::Event::getByToken(), i, edm::EDGetTokenT< T >::isUninitialized(), edm::HandleBase::isValid(), j, m_deltaEta, m_deltaPhi, m_maxNRegions, m_maxNVertices, m_mode, m_nSigmaZBeamSpot, m_nSigmaZVertex, m_originRadius, m_precise, m_ptMin, m_searchOpt, m_whereToUseMeasurementTracker, m_zErrorBeamSpot, m_zErrorVetex, HLT_25ns14e33_v1_cff::measurementTracker, phi_input, edm::Handle< T >::product(), query::result, edm::second(), theta(), token_beamSpot, token_measurementTracker, token_vertex, HLT_25ns14e33_v1_cff::vertices, VERTICES_FIXED, VERTICES_SIGMA, x, detailsBasic3DVector::y, and detailsBasic3DVector::z.

   {
     std::vector<TrackingRegion* > result;
 
     // always need the beam spot (as a fall back strategy for vertex modes)
     edm::Handle< reco::BeamSpot > bs;
     e.getByToken( token_beamSpot, bs );
     if( !bs.isValid() ) return result;
 
     // this is a default origin for all modes
     GlobalPoint default_origin( bs->x0(), bs->y0(), bs->z0() );
 
     // vector of origin & halfLength pairs:
     std::vector< std::pair< GlobalPoint, float > > origins;
 
     // fill the origins and halfLengths depending on the mode
     if (m_mode == BEAM_SPOT_FIXED || m_mode == BEAM_SPOT_SIGMA) {
       origins.push_back( std::make_pair( default_origin,
                      (m_mode == BEAM_SPOT_FIXED) ? m_zErrorBeamSpot : m_nSigmaZBeamSpot*bs->sigmaZ()
                      ));
     } else if (m_mode == VERTICES_FIXED || m_mode == VERTICES_SIGMA) {
       edm::Handle< reco::VertexCollection > vertices;
       e.getByToken( token_vertex, vertices );
       int n_vert = 0;
       for (reco::VertexCollection::const_iterator iv = vertices->begin(), ev = vertices->end();
        iv != ev && n_vert < m_maxNVertices; ++iv) {
         if ( iv->isFake() || !iv->isValid() ) continue;
     
         origins.push_back( std::make_pair( GlobalPoint( iv->x(), iv->y(), iv->z() ),
                        (m_mode == VERTICES_FIXED) ? m_zErrorVetex : m_nSigmaZVertex*iv->zError()
                        ));
         ++n_vert;
       }
       // no-vertex fall-back case:
       if ( origins.empty() ) {
         origins.push_back( std::make_pair( default_origin,
                        (m_nSigmaZBeamSpot > 0.) ? m_nSigmaZBeamSpot*bs->z0Error() : m_zErrorBeamSpot
                        ));
       }
     }
     
     const MeasurementTrackerEvent *measurementTracker = nullptr;
     if( !token_measurementTracker.isUninitialized() ) {
       edm::Handle<MeasurementTrackerEvent> hmte;
       e.getByToken(token_measurementTracker, hmte);
       measurementTracker = hmte.product();
     }
 
     // create tracking regions (maximum MaxNRegions of them) in directions of the
     // points of interest
     size_t n_points = 1;
     int n_regions = 0;
     for(size_t i = 0; i < n_points && n_regions < m_maxNRegions; ++i ) {
 
       double x = TMath::Cos(phi_input);
       double y = TMath::Sin(phi_input);
       double theta = 2*TMath::ATan(TMath::Exp(-eta_input));
       double z = (x*x+y*y)/TMath::Tan(theta);
 
       GlobalVector direction( x,y,z );
     
       for (size_t  j=0; j<origins.size() && n_regions < m_maxNRegions; ++j) {
 
         result.push_back( new RectangularEtaPhiTrackingRegion(
           direction, // GlobalVector
           origins[j].first, // GlobalPoint
           m_ptMin,
           m_originRadius,
           origins[j].second,
           m_deltaEta,
           m_deltaPhi,
           m_whereToUseMeasurementTracker,
           m_precise,
           measurementTracker,
           m_searchOpt
         ));
         ++n_regions;
       }
     }
     //std::cout<<"n_seeded_regions = "<<n_regions<<std::endl;
     edm::LogInfo ("PointSeededTrackingRegionsProducer") << "produced "<<n_regions<<" regions";
     
     return result;
   }