#include <PixelTripletLowPtGenerator.h>

Inheritance diagram for PixelTripletLowPtGenerator:

Public Member Functions
virtual void	hitTriplets (const TrackingRegion &region, OrderedHitTriplets &trs, const edm::Event &ev, const edm::EventSetup &es, SeedingLayerSetsHits::SeedingLayerSet pairLayers, const std::vector< SeedingLayerSetsHits::SeedingLayer > &thirdLayers) override

	PixelTripletLowPtGenerator (const edm::ParameterSet &cfg, edm::ConsumesCollector &iC)

virtual	~PixelTripletLowPtGenerator ()

Public Member Functions inherited from HitTripletGeneratorFromPairAndLayers
	HitTripletGeneratorFromPairAndLayers (unsigned int maxElement=0)

	HitTripletGeneratorFromPairAndLayers (const edm::ParameterSet &pset)

void	init (std::unique_ptr< HitPairGeneratorFromLayerPair > &&pairs, LayerCacheType *layerCache)

const HitPairGeneratorFromLayerPair &	pairGenerator () const

virtual	~HitTripletGeneratorFromPairAndLayers ()

Private Member Functions
GlobalPoint	getGlobalPosition (const TrackingRecHit *recHit)

void	getTracker (const edm::EventSetup &es)

Private Attributes
std::string	builderName

bool	checkClusterShape

bool	checkMultipleScattering

double	maxAngleRatio

double	nSigMultipleScattering

double	rzTolerance

edm::EDGetTokenT < SiPixelClusterShapeCache >	theClusterShapeCacheToken

std::unique_ptr< TripletFilter >	theFilter

const TrackerGeometry *	theTracker

Additional Inherited Members
Public Types inherited from HitTripletGeneratorFromPairAndLayers
typedef LayerHitMapCache	LayerCacheType

Protected Attributes inherited from HitTripletGeneratorFromPairAndLayers
LayerCacheType *	theLayerCache

const unsigned int	theMaxElement

std::unique_ptr < HitPairGeneratorFromLayerPair >	thePairGenerator

Detailed Description

Definition at line 23 of file PixelTripletLowPtGenerator.h.

Constructor & Destructor Documentation

PixelTripletLowPtGenerator::PixelTripletLowPtGenerator	(	const edm::ParameterSet &	cfg,
		edm::ConsumesCollector &	iC
	)

Definition at line 26 of file PixelTripletLowPtGenerator.cc.

References builderName, checkClusterShape, checkMultipleScattering, edm::ParameterSet::getParameter(), maxAngleRatio, nSigMultipleScattering, and rzTolerance.

                                                                                                            :
   HitTripletGeneratorFromPairAndLayers(), // no theMaxElement used in this class
   theTracker(nullptr),
   theClusterShapeCacheToken(iC.consumes<SiPixelClusterShapeCache>(cfg.getParameter<edm::InputTag>("clusterShapeCacheSrc")))
 {
   checkMultipleScattering = cfg.getParameter<bool>("checkMultipleScattering");
   nSigMultipleScattering  = cfg.getParameter<double>("nSigMultipleScattering");
   checkClusterShape       = cfg.getParameter<bool>("checkClusterShape"); 
   rzTolerance             = cfg.getParameter<double>("rzTolerance");
   maxAngleRatio           = cfg.getParameter<double>("maxAngleRatio");
   builderName             = cfg.getParameter<string>("TTRHBuilder");
 }

PixelTripletLowPtGenerator::~PixelTripletLowPtGenerator ( )

virtual

Definition at line 40 of file PixelTripletLowPtGenerator.cc.

40 {}

Member Function Documentation

GlobalPoint PixelTripletLowPtGenerator::getGlobalPosition ( const TrackingRecHit * recHit )

private

Definition at line 66 of file PixelTripletLowPtGenerator.cc.

References TrackingRecHit::geographicalId(), and TrackingRecHit::localPosition().

Referenced by hitTriplets().

 {
   DetId detId = recHit->geographicalId();
 
   return
     theTracker->idToDet(detId)->toGlobal(recHit->localPosition());
 }

void PixelTripletLowPtGenerator::getTracker ( const edm::EventSetup & es )

private

Definition at line 47 of file PixelTripletLowPtGenerator.cc.

References edm::EventSetup::get(), edm::ESHandle< class >::product(), and patCandidatesForDimuonsSequences_cff::tracker.

Referenced by hitTriplets().

 {
   if(theTracker == 0)
   {
     // Get tracker geometry
     edm::ESHandle<TrackerGeometry> tracker;
     es.get<TrackerDigiGeometryRecord>().get(tracker);
 
     theTracker = tracker.product();
   }
 
   if(!theFilter)
   {
     theFilter = std::make_unique<TripletFilter>(es);
   }
 }

void PixelTripletLowPtGenerator::hitTriplets	(	const TrackingRegion &	region,
		OrderedHitTriplets &	trs,
		const edm::Event &	ev,
		const edm::EventSetup &	es,
		SeedingLayerSetsHits::SeedingLayerSet	pairLayers,
		const std::vector< SeedingLayerSetsHits::SeedingLayer > &	thirdLayers
	)

overridevirtual

Implements HitTripletGeneratorFromPairAndLayers.

Definition at line 75 of file PixelTripletLowPtGenerator.cc.

References builderName, ecal_dqm_sourceclient-live_cfg::cerr, checkClusterShape, checkMultipleScattering, ev, edm::EventSetup::get(), edm::Event::getByToken(), getGlobalPosition(), HitInfo::getInfo(), ThirdHitPrediction::getRanges(), getTracker(), RecHitsSortedInPhi::hits(), i, ThirdHitPrediction::isCompatibleWithMultipleScattering(), DetLayer::location(), PixelRecoRange< T >::max(), maxAngleRatio, PixelRecoRange< T >::min(), nSigMultipleScattering, phi, edm::ESHandle< class >::product(), HLT_FULL_cff::recHits, HLT_FULL_cff::region, rzTolerance, OrderedHitPairs::size(), findQualityFiles::size, DetLayer::subDetector(), theClusterShapeCacheToken, theFilter, HitTripletGeneratorFromPairAndLayers::theLayerCache, and HitTripletGeneratorFromPairAndLayers::thePairGenerator.

 {
 
   //Retrieve tracker topology from geometry
   edm::ESHandle<TrackerTopology> tTopoHand;
   es.get<TrackerTopologyRcd>().get(tTopoHand);
   const TrackerTopology *tTopo=tTopoHand.product();
 
   edm::Handle<SiPixelClusterShapeCache> clusterShapeCache;
   ev.getByToken(theClusterShapeCacheToken, clusterShapeCache);
 
   // Generate pairs
   OrderedHitPairs pairs; pairs.reserve(30000);
   thePairGenerator->hitPairs(region,pairs,ev,es, pairLayers);
 
   if (pairs.size() == 0) return;
 
   int size = thirdLayers.size();
 
   // Set aliases
   const RecHitsSortedInPhi **thirdHitMap = new const RecHitsSortedInPhi*[size]; 
   for(int il=0; il<size; il++)
     thirdHitMap[il] = &(*theLayerCache)(thirdLayers[il], region, ev, es);
 
   // Get tracker
   getTracker(es);
 
   // Look at all generated pairs
   for(OrderedHitPairs::const_iterator ip = pairs.begin();
                                       ip!= pairs.end(); ip++)
   {
     // Fill rechits and points
     vector<const TrackingRecHit*> recHits(3);
     vector<GlobalPoint> points(3);
 
     recHits[0] = (*ip).inner()->hit();
     recHits[1] = (*ip).outer()->hit();
 
 #ifdef Debug
     cerr << " RecHits " + HitInfo::getInfo(*recHits[0]) +
                           HitInfo::getInfo(*recHits[1]) << endl;
 #endif
 
     for(int i=0; i<2; i++)
       points[i] = getGlobalPosition(recHits[i]);
 
     // Initialize helix prediction
     ThirdHitPrediction
       thePrediction(region,
                     points[0],points[1], es,
                     nSigMultipleScattering,maxAngleRatio,builderName);
 
     // Look at all layers
     for(int il=0; il<size; il++)
     {
       const DetLayer * layer = thirdLayers[il].detLayer();
 
 #ifdef Debug
       cerr << "  check layer " << layer->subDetector()
                         << " " << layer->location() << endl;
 #endif
 
       // Get ranges for the third hit
       float phi[2],rz[2];
       thePrediction.getRanges(layer, phi,rz);
 
       PixelRecoRange<float> phiRange(phi[0]              , phi[1]             );
       PixelRecoRange<float>  rzRange( rz[0] - rzTolerance, rz[1] + rzTolerance);
 
       // Get third hit candidates from cache
       typedef RecHitsSortedInPhi::Hit Hit;
       vector<Hit> thirdHits = thirdHitMap[il]->hits(phiRange.min(),phiRange.max());
       typedef vector<Hit>::const_iterator IH;
 
       for (IH th=thirdHits.begin(), eh=thirdHits.end(); th < eh; ++th) 
       {
         // Fill rechit and point
         recHits[2] = (*th)->hit();
         points[2]  = getGlobalPosition(recHits[2]);
 
 #ifdef Debug
         cerr << "  third hit " + HitInfo::getInfo(*recHits[2]) << endl;
 #endif
 
         // Check if third hit is compatible with multiple scattering
         vector<GlobalVector> globalDirs;
         if(thePrediction.isCompatibleWithMultipleScattering
              (points[2], recHits, globalDirs, es) == false)
         {
 #ifdef Debug
           cerr << "  not compatible: multiple scattering" << endl;
 #endif
           if(checkMultipleScattering) continue;
         }
 
         // Convert to localDirs
 /*
         vector<LocalVector> localDirs;
         vector<GlobalVector>::const_iterator globalDir = globalDirs.begin();
         for(vector<const TrackingRecHit *>::const_iterator
                                             recHit  = recHits.begin();
                                             recHit != recHits.end(); recHit++)
         {
           localDirs.push_back(theTracker->idToDet(
                              (*recHit)->geographicalId())->toLocal(*globalDir));
           globalDir++;
         }
 */
 
         // Check if the cluster shapes are compatible with thrusts
         if(checkClusterShape)
         {
           if(! theFilter->checkTrack(recHits,globalDirs,tTopo, *clusterShapeCache))
           {
 #ifdef Debug
             cerr << "  not compatible: cluster shape" << endl;
 #endif
             continue;
           }
         }
 
         // All checks passed, put triplet back
         result.push_back(OrderedHitTriplet((*ip).inner(),(*ip).outer(),*th));
       }
     }
   } 
   delete [] thirdHitMap;
 
   return;
 }