#include <GlobalTrackingRegionProducerFromBeamSpot.h>

Inheritance diagram for GlobalTrackingRegionProducerFromBeamSpot:

Public Member Functions
	GlobalTrackingRegionProducerFromBeamSpot (const edm::ParameterSet &cfg)
virtual std::vector < TrackingRegion * >	regions (const edm::Event &ev, const edm::EventSetup &) const
virtual	~GlobalTrackingRegionProducerFromBeamSpot ()
Private Attributes
edm::InputTag	theBeamSpotTag
double	theNSigmaZ
double	theOriginHalfLength
double	theOriginRadius
bool	thePrecise
double	thePtMin

Detailed Description

Definition at line 11 of file GlobalTrackingRegionProducerFromBeamSpot.h.

Constructor & Destructor Documentation

GlobalTrackingRegionProducerFromBeamSpot::GlobalTrackingRegionProducerFromBeamSpot ( const edm::ParameterSet & cfg ) [inline]

Definition at line 15 of file GlobalTrackingRegionProducerFromBeamSpot.h.

References Exception, edm::ParameterSet::existsAs(), edm::ParameterSet::getParameter(), theBeamSpotTag, theNSigmaZ, theOriginHalfLength, theOriginRadius, thePrecise, and thePtMin.

                                                                       {

    edm::ParameterSet regionPSet = cfg.getParameter<edm::ParameterSet>("RegionPSet");
    thePtMin            = regionPSet.getParameter<double>("ptMin");
    theOriginRadius     = regionPSet.getParameter<double>("originRadius");
    if (!regionPSet.existsAs<double>("nSigmaZ") && !regionPSet.existsAs<double>("originHalfLength")) {
        throw cms::Exception("Configuration") << "GlobalTrackingRegionProducerFromBeamSpot: at least one of nSigmaZ, originHalfLength must be present in the cfg.\n";
    }
    theNSigmaZ          = (regionPSet.existsAs<double>("nSigmaZ")          ? regionPSet.getParameter<double>("nSigmaZ")          : 0.0);
    theOriginHalfLength = (regionPSet.existsAs<double>("originHalfLength") ? regionPSet.getParameter<double>("originHalfLength") : 0.0);
    theBeamSpotTag      = regionPSet.getParameter<edm::InputTag>("beamSpot");
    thePrecise          = regionPSet.getParameter<bool>("precise");
  }

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

Definition at line 29 of file GlobalTrackingRegionProducerFromBeamSpot.h.

{}

Member Function Documentation

virtual std::vector<TrackingRegion* > GlobalTrackingRegionProducerFromBeamSpot::regions	(	const edm::Event &	ev,
		const edm::EventSetup &
	)		const `[inline, virtual]`

Implements TrackingRegionProducer.

Definition at line 31 of file GlobalTrackingRegionProducerFromBeamSpot.h.

References edm::Event::getByLabel(), edm::HandleBase::isValid(), max(), query::result, reco::BeamSpot::sigmaZ(), theBeamSpotTag, theNSigmaZ, theOriginHalfLength, theOriginRadius, thePrecise, thePtMin, reco::BeamSpot::x0(), reco::BeamSpot::y0(), and reco::BeamSpot::z0().

                                                                                             {
    std::vector<TrackingRegion* > result;
    edm::Handle<reco::BeamSpot> bsHandle;
    ev.getByLabel( theBeamSpotTag, bsHandle);
    if(bsHandle.isValid()) {

      const reco::BeamSpot & bs = *bsHandle; 

      GlobalPoint origin(bs.x0(), bs.y0(), bs.z0()); 

      result.push_back( new GlobalTrackingRegion( 
          thePtMin, origin, theOriginRadius, std::max(theNSigmaZ*bs.sigmaZ(), theOriginHalfLength), thePrecise));

    }
    return result;
  }