#include <PixelQuadrupletGenerator.h>

Inheritance diagram for PixelQuadrupletGenerator:

Classes
class	QuantityDependsPt

class	QuantityDependsPtEval

Public Member Functions
void	hitQuadruplets (const TrackingRegion &region, OrderedHitSeeds &result, const edm::Event &ev, const edm::EventSetup &es, const SeedingLayerSetsHits::SeedingLayerSet &tripletLayers, const std::vector< SeedingLayerSetsHits::SeedingLayer > &fourthLayers) override

void	hitQuadruplets (const TrackingRegion &region, OrderedHitSeeds &result, const edm::Event &ev, const edm::EventSetup &es, OrderedHitTriplets::const_iterator tripletsBegin, OrderedHitTriplets::const_iterator tripletsEnd, const std::vector< SeedingLayerSetsHits::SeedingLayer > &fourthLayers, LayerCacheType &layerCache)

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

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

	~PixelQuadrupletGenerator () override

Public Member Functions inherited from HitQuadrupletGeneratorFromTripletAndLayers
	HitQuadrupletGeneratorFromTripletAndLayers ()

void	init (std::unique_ptr< HitTripletGeneratorFromPairAndLayers > &&tripletGenerator, LayerCacheType *layerCache)

virtual	~HitQuadrupletGeneratorFromTripletAndLayers ()

Static Public Member Functions
static void	fillDescriptions (edm::ParameterSetDescription &desc)

Private Types
typedef CombinedHitQuadrupletGenerator::LayerCacheType	LayerCacheType

Private Attributes
const float	extraHitRPhitolerance

const float	extraHitRZtolerance

const QuantityDependsPt	extraPhiTolerance

const bool	fitFastCircle

const bool	fitFastCircleChi2Cut

const QuantityDependsPt	maxChi2

std::unique_ptr< SeedComparitor >	theComparitor

const bool	useBendingCorrection

Additional Inherited Members
Public Types inherited from HitQuadrupletGeneratorFromTripletAndLayers
typedef LayerHitMapCache	LayerCacheType

Protected Attributes inherited from HitQuadrupletGeneratorFromTripletAndLayers
LayerCacheType *	theLayerCache

std::unique_ptr< HitTripletGeneratorFromPairAndLayers >	theTripletGenerator

Detailed Description

Definition at line 19 of file PixelQuadrupletGenerator.h.

Member Typedef Documentation

typedef CombinedHitQuadrupletGenerator::LayerCacheType PixelQuadrupletGenerator::LayerCacheType

private

Definition at line 21 of file PixelQuadrupletGenerator.h.

Constructor & Destructor Documentation

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

inline

Definition at line 24 of file PixelQuadrupletGenerator.h.

References looper::cfg, ev, fillDescriptions(), hitQuadruplets(), mps_fire::result, and ~PixelQuadrupletGenerator().

24 : PixelQuadrupletGenerator(cfg, iC) {}

PixelQuadrupletGenerator::PixelQuadrupletGenerator

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

Definition: PixelQuadrupletGenerator.h:24

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

Definition at line 33 of file PixelQuadrupletGenerator.cc.

References beamerCreator::create(), edm::ParameterSet::exists(), reco::get(), edm::ParameterSet::getParameter(), AlCaHLTBitMon_QueryRunRegistry::string, and theComparitor.

                                                                                                       :
   extraHitRZtolerance(cfg.getParameter<double>("extraHitRZtolerance")), //extra window in ThirdHitRZPrediction range
   extraHitRPhitolerance(cfg.getParameter<double>("extraHitRPhitolerance")), //extra window in ThirdHitPredictionFromCircle range (divide by R to get phi)
   extraPhiTolerance(cfg.getParameter<edm::ParameterSet>("extraPhiTolerance")),
   maxChi2(cfg.getParameter<edm::ParameterSet>("maxChi2")),
   fitFastCircle(cfg.getParameter<bool>("fitFastCircle")),
   fitFastCircleChi2Cut(cfg.getParameter<bool>("fitFastCircleChi2Cut")),
   useBendingCorrection(cfg.getParameter<bool>("useBendingCorrection"))
 {
   if(cfg.exists("SeedComparitorPSet")) {
     edm::ParameterSet comparitorPSet =
       cfg.getParameter<edm::ParameterSet>("SeedComparitorPSet");
     std::string comparitorName = comparitorPSet.getParameter<std::string>("ComponentName");
     if(comparitorName != "none") {
       theComparitor.reset(SeedComparitorFactory::get()->create(comparitorName, comparitorPSet, iC));
     }
   }
 }

PixelQuadrupletGenerator::~PixelQuadrupletGenerator ( )

override

Definition at line 52 of file PixelQuadrupletGenerator.cc.

Referenced by PixelQuadrupletGenerator().

52 {}

Member Function Documentation

void PixelQuadrupletGenerator::fillDescriptions ( edm::ParameterSetDescription & desc )

static

Definition at line 54 of file PixelQuadrupletGenerator.cc.

References edm::ParameterSetDescription::add(), and AlCaHLTBitMon_QueryRunRegistry::string.

Referenced by PixelQuadrupletEDProducer::fillDescriptions(), and PixelQuadrupletGenerator().

                                                                                 {
   desc.add<double>("extraHitRZtolerance", 0.1);
   desc.add<double>("extraHitRPhitolerance", 0.1);
 
   edm::ParameterSetDescription descExtraPhi;
   descExtraPhi.add<double>("pt1", 0.1);
   descExtraPhi.add<double>("pt2", 0.1);
   descExtraPhi.add<double>("value1", 999);
   descExtraPhi.add<double>("value2", 0.15);
   descExtraPhi.add<bool>("enabled", false);
   desc.add<edm::ParameterSetDescription>("extraPhiTolerance", descExtraPhi);
 
   edm::ParameterSetDescription descMaxChi2;
   descMaxChi2.add<double>("pt1", 0.2);
   descMaxChi2.add<double>("pt2", 1.5);
   descMaxChi2.add<double>("value1", 500);
   descMaxChi2.add<double>("value2", 50);
   descMaxChi2.add<bool>("enabled", true);
   desc.add<edm::ParameterSetDescription>("maxChi2", descMaxChi2);
 
   desc.add<bool>("fitFastCircle", false);
   desc.add<bool>("fitFastCircleChi2Cut", false);
   desc.add<bool>("useBendingCorrection", false);
 
   edm::ParameterSetDescription descComparitor;
   descComparitor.add<std::string>("ComponentName", "none");
   descComparitor.setAllowAnything(); // until we have moved SeedComparitor too to EDProducers
   desc.add<edm::ParameterSetDescription>("SeedComparitorPSet", descComparitor);
 }

void PixelQuadrupletGenerator::hitQuadruplets	(	const TrackingRegion &	region,
		OrderedHitSeeds &	result,
		const edm::Event &	ev,
		const edm::EventSetup &	es,
		const SeedingLayerSetsHits::SeedingLayerSet &	tripletLayers,
		const std::vector< SeedingLayerSetsHits::SeedingLayer > &	fourthLayers
	)

overridevirtual

Implements HitQuadrupletGeneratorFromTripletAndLayers.

Definition at line 85 of file PixelQuadrupletGenerator.cc.

References HitQuadrupletGeneratorFromTripletAndLayers::theLayerCache, HitQuadrupletGeneratorFromTripletAndLayers::theTripletGenerator, and DetachedQuadStep_cff::triplets.

Referenced by PixelQuadrupletGenerator(), and PixelQuadrupletEDProducer::produce().

 {
   OrderedHitTriplets triplets;
   theTripletGenerator->hitTriplets(region, triplets, ev, es,
                                    tripletLayers, // pair generator picks the correct two layers from these
                                    std::vector<SeedingLayerSetsHits::SeedingLayer>{tripletLayers[2]});
   if(triplets.empty()) return;
 
   assert(theLayerCache);
   hitQuadruplets(region, result, ev, es, triplets.begin(), triplets.end(), fourthLayers, *theLayerCache);
 }

void PixelQuadrupletGenerator::hitQuadruplets	(	const TrackingRegion &	region,
		OrderedHitSeeds &	result,
		const edm::Event &	ev,
		const edm::EventSetup &	es,
		OrderedHitTriplets::const_iterator	tripletsBegin,
		OrderedHitTriplets::const_iterator	tripletsEnd,
		const std::vector< SeedingLayerSetsHits::SeedingLayer > &	fourthLayers,
		LayerCacheType &	layerCache
	)

Definition at line 100 of file PixelQuadrupletGenerator.cc.

References funct::abs(), angle(), EnergyCorrector::c, HiEvtPlane_cfi::chi2, FastCircleFit::chi2(), RZLine::chi2(), constexpr, ThirdHitPredictionFromCircle::curvature(), PixelRecoUtilities::curvature(), GlobalErrorBase< T, ErrorWeightType >::czz(), declareDynArray, relativeConstraints::empty, relativeConstraints::error, PixelQuadrupletGenerator::QuantityDependsPt::evaluator(), extraHitRPhitolerance, extraHitRZtolerance, extraPhiTolerance, f, fitFastCircle, fitFastCircleChi2Cut, Geom::ftwoPi(), hfClusterShapes_cfi::hits, mps_fire::i, hcalTTPDigis_cfi::id, ThirdHitRZPredictionBase::initLayer(), ThirdHitRZPredictionBase::initTolerance(), PixelRecoUtilities::inversePt(), DetLayer::isBarrel(), gedGsfElectrons_cfi::isBarrel, edm::isNotFinite(), geometryCSVtoXML::line, hpstanc_transforms::max, maxChi2, min(), nSigmaRZ, TrackingRegion::origin(), phi, ThirdHitPredictionFromCircle::phi(), PixelSubdetector::PixelBarrel, point, EnergyCorrector::pt, TCMET_cfi::radius, GlobalErrorBase< T, ErrorWeightType >::rerr(), findQualityFiles::size, funct::sqr(), mathSSE::sqrt(), theComparitor, useBendingCorrection, findQualityFiles::v, PixelQuadrupletGenerator::QuantityDependsPtEval::value(), PV3DBase< T, PVType, FrameType >::x(), PV3DBase< T, PVType, FrameType >::y(), and PV3DBase< T, PVType, FrameType >::z().

 {
   if (theComparitor) theComparitor->init(ev, es);
 
   const size_t size = fourthLayers.size();
 
   const RecHitsSortedInPhi *fourthHitMap[size];
   typedef RecHitsSortedInPhi::Hit Hit;
 
   using NodeInfo = KDTreeNodeInfo<unsigned int>;
   std::vector<NodeInfo > layerTree; // re-used throughout
   std::vector<unsigned int> foundNodes; // re-used thoughout
 
   declareDynArray(KDTreeLinkerAlgo<unsigned int>, size, hitTree);
   float rzError[size]; //save maximum errors
 
   declareDynArray(ThirdHitRZPrediction<PixelRecoLineRZ>, size, preds);
 
   // Build KDtrees
   for(size_t il=0; il!=size; ++il) {
     fourthHitMap[il] = &(layerCache)(fourthLayers[il], region, es);
     auto const& hits = *fourthHitMap[il];
 
     ThirdHitRZPrediction<PixelRecoLineRZ> & pred = preds[il];
     pred.initLayer(fourthLayers[il].detLayer());
     pred.initTolerance(extraHitRZtolerance);
 
     layerTree.clear();
     float maxphi = Geom::ftwoPi(), minphi = -maxphi; // increase to cater for any range
     float minv=999999.0, maxv= -999999.0; // Initialise to extreme values in case no hits
     float maxErr=0.0f;
     for (unsigned int i=0; i!=hits.size(); ++i) {
       auto angle = hits.phi(i);
       auto v =  hits.gv(i);
       //use (phi,r) for endcaps rather than (phi,z)
       minv = std::min(minv,v);  maxv = std::max(maxv,v);
       float myerr = hits.dv[i];
       maxErr = std::max(maxErr,myerr);
       layerTree.emplace_back(i, angle, v); // save it
       if (angle < 0)  // wrap all points in phi
     { layerTree.emplace_back(i, angle+Geom::ftwoPi(), v);}
       else
     { layerTree.emplace_back(i, angle-Geom::ftwoPi(), v);}
     }
     KDTreeBox phiZ(minphi, maxphi, minv-0.01f, maxv+0.01f);  // declare our bounds
     //add fudge factors in case only one hit and also for floating-point inaccuracy
     hitTree[il].build(layerTree, phiZ); // make KDtree
     rzError[il] = maxErr; // save error
   }
 
   const QuantityDependsPtEval maxChi2Eval = maxChi2.evaluator(es);
   const QuantityDependsPtEval extraPhiToleranceEval = extraPhiTolerance.evaluator(es);
 
   // re-used thoughout
   std::array<float, 4> bc_r;
   std::array<float, 4> bc_z;
   std::array<float, 4> bc_errZ2;
   std::array<GlobalPoint, 4> gps;
   std::array<GlobalError, 4> ges;
   std::array<bool, 4> barrels;
 
   // Loop over triplets
   for(auto iTriplet = tripletsBegin; iTriplet != tripletsEnd; ++iTriplet) {
     const auto& triplet = *iTriplet;
     GlobalPoint gp0 = triplet.inner()->globalPosition();
     GlobalPoint gp1 = triplet.middle()->globalPosition();
     GlobalPoint gp2 = triplet.outer()->globalPosition();
 
     PixelRecoLineRZ line(gp0, gp2);
     ThirdHitPredictionFromCircle predictionRPhi(gp0, gp2, extraHitRPhitolerance);
 
     const double curvature = predictionRPhi.curvature(ThirdHitPredictionFromCircle::Vector2D(gp1.x(), gp1.y()));
 
     const float abscurv = std::abs(curvature);
     const float thisMaxChi2 = maxChi2Eval.value(abscurv);
     const float thisExtraPhiTolerance = extraPhiToleranceEval.value(abscurv);
 
     constexpr float nSigmaRZ = 3.46410161514f; // std::sqrt(12.f); // ...and continue as before
 
     auto isBarrel = [](const unsigned id) -> bool {
       return id == PixelSubdetector::PixelBarrel;
     };
 
     gps[0] = triplet.inner()->globalPosition();
     ges[0] = triplet.inner()->globalPositionError();
     barrels[0] = isBarrel(triplet.inner()->geographicalId().subdetId());
 
     gps[1] = triplet.middle()->globalPosition();
     ges[1] = triplet.middle()->globalPositionError();
     barrels[1] = isBarrel(triplet.middle()->geographicalId().subdetId());
 
     gps[2] = triplet.outer()->globalPosition();
     ges[2] = triplet.outer()->globalPositionError();
     barrels[2] = isBarrel(triplet.outer()->geographicalId().subdetId());
 
     for(size_t il=0; il!=size; ++il) {
       if(hitTree[il].empty()) continue; // Don't bother if no hits
 
       auto const& hits = *fourthHitMap[il];
       const DetLayer *layer = fourthLayers[il].detLayer();
       bool barrelLayer = layer->isBarrel();
 
       auto& predictionRZ = preds[il];
       predictionRZ.initPropagator(&line);
       Range rzRange = predictionRZ(); // z in barrel, r in endcap
 
       // construct search box and search
       Range phiRange;
       if(barrelLayer) {
         auto radius = static_cast<const BarrelDetLayer *>(layer)->specificSurface().radius();
         double phi = predictionRPhi.phi(curvature, radius);
         phiRange = Range(phi-thisExtraPhiTolerance, phi+thisExtraPhiTolerance);
       }
       else {
         double phi1 = predictionRPhi.phi(curvature, rzRange.min());
         double phi2 = predictionRPhi.phi(curvature, rzRange.max());
         phiRange = Range(std::min(phi1, phi2)-thisExtraPhiTolerance, std::max(phi1, phi2)+thisExtraPhiTolerance);
       }
 
       KDTreeBox phiZ(phiRange.min(), phiRange.max(),
                      rzRange.min()-nSigmaRZ*rzError[il],
                      rzRange.max()+nSigmaRZ*rzError[il]);
 
       foundNodes.clear();
       hitTree[il].search(phiZ, foundNodes);
 
       if(foundNodes.empty()) {
         continue;
       }
 
       SeedingHitSet::ConstRecHitPointer selectedHit = nullptr;
       float selectedChi2 = std::numeric_limits<float>::max();
       for(auto hitIndex: foundNodes) {
         const auto& hit = hits.theHits[hitIndex].hit();
 
         // Reject comparitor. For now, because of technical
         // limitations, pass three hits to the comparitor
         // TODO: switch to using hits from 2-3-4 instead of 1-3-4?
         // Eventually we should fix LowPtClusterShapeSeedComparitor to
         // accept quadruplets.
         if(theComparitor) {
           SeedingHitSet tmpTriplet(triplet.inner(), triplet.outer(), hit);
           if(!theComparitor->compatible(tmpTriplet)) {
             continue;
           }
         }
 
         gps[3] = hit->globalPosition();
         ges[3] = hit->globalPositionError();
         barrels[3] = isBarrel(hit->geographicalId().subdetId());
 
         float chi2 = std::numeric_limits<float>::quiet_NaN();
         // TODO: Do we have any use case to not use bending correction?
         if(useBendingCorrection) {
           // Following PixelFitterByConformalMappingAndLine
           const float simpleCot = ( gps.back().z()-gps.front().z() )/ (gps.back().perp() - gps.front().perp() );
           const float pt = 1/PixelRecoUtilities::inversePt(abscurv, es);
           for (int i=0; i< 4; ++i) {
             const GlobalPoint & point = gps[i];
             const GlobalError & error = ges[i];
             bc_r[i] = sqrt( sqr(point.x()-region.origin().x()) + sqr(point.y()-region.origin().y()) );
             bc_r[i] += pixelrecoutilities::LongitudinalBendingCorrection(pt,es)(bc_r[i]);
             bc_z[i] = point.z()-region.origin().z();
             bc_errZ2[i] =  (barrels[i]) ? error.czz() : error.rerr(point)*sqr(simpleCot);
           }
           RZLine rzLine(bc_r,bc_z,bc_errZ2, RZLine::ErrZ2_tag());
           chi2 = rzLine.chi2();
         }
         else {
           RZLine rzLine(gps, ges, barrels);
           chi2 = rzLine.chi2();
         }
         if(edm::isNotFinite(chi2) || chi2 > thisMaxChi2) {
           continue;
         }
         // TODO: Do we have any use case to not use circle fit? Maybe
         // HLT where low-pT inefficiency is not a problem?
         if(fitFastCircle) {
           FastCircleFit c(gps, ges);
           chi2 += c.chi2();
           if(edm::isNotFinite(chi2))
             continue;
           if(fitFastCircleChi2Cut && chi2 > thisMaxChi2)
             continue;
         }
 
 
         if(chi2 < selectedChi2) {
           selectedChi2 = chi2;
           selectedHit = hit;
         }
       }
       if(selectedHit)
         result.emplace_back(triplet.inner(), triplet.middle(), triplet.outer(), selectedHit);
     }
   }
 }