#include <PixelTripletNoTipGenerator.h>

Inheritance diagram for PixelTripletNoTipGenerator:

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

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

virtual	~PixelTripletNoTipGenerator ()

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 Types
typedef CombinedHitTripletGenerator::LayerCacheType	LayerCacheType

Private Attributes
float	extraHitPhiToleranceForPreFiltering

float	extraHitRPhitolerance

float	extraHitRZtolerance

double	theChi2Cut

double	theNSigma

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 13 of file PixelTripletNoTipGenerator.h.

Member Typedef Documentation

typedef CombinedHitTripletGenerator::LayerCacheType PixelTripletNoTipGenerator::LayerCacheType

private

Definition at line 14 of file PixelTripletNoTipGenerator.h.

Constructor & Destructor Documentation

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

Definition at line 24 of file PixelTripletNoTipGenerator.cc.

     : HitTripletGeneratorFromPairAndLayers(cfg),
       extraHitRZtolerance(cfg.getParameter<double>("extraHitRZtolerance")),
       extraHitRPhitolerance(cfg.getParameter<double>("extraHitRPhitolerance")),
       extraHitPhiToleranceForPreFiltering(cfg.getParameter<double>("extraHitPhiToleranceForPreFiltering")), 
       theNSigma(cfg.getParameter<double>("nSigma")),
       theChi2Cut(cfg.getParameter<double>("chi2Cut"))
 { }

PixelTripletNoTipGenerator::~PixelTripletNoTipGenerator ( )

virtual

Definition at line 33 of file PixelTripletNoTipGenerator.cc.

33 {}

Member Function Documentation

void PixelTripletNoTipGenerator::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 35 of file PixelTripletNoTipGenerator.cc.

References GeomDetEnumerators::barrel, Surface::bounds(), PixelRecoUtilities::curvature(), ev, extraHitPhiToleranceForPreFiltering, extraHitRZtolerance, RecHitsSortedInPhi::hits(), PixelRecoUtilities::inversePt(), geometryCSVtoXML::line, DetLayer::location(), M_PI, TrackingRegion::origin(), TrackingRegion::originRBound(), p1, p2, p3, PV3DBase< T, PVType, FrameType >::perp(), PV3DBase< T, PVType, FrameType >::phi(), GeometricSearchDet::position(), TrackingRegion::ptMin(), CosmicsPD_Skims::radius, HLT_FULL_cff::region, edm::shift, OrderedHitPairs::size(), OrderedHitTriplets::size(), findQualityFiles::size, PixelRecoRange< T >::sort(), BarrelDetLayer::specificSurface(), funct::sqr(), mathSSE::sqrt(), ForwardDetLayer::surface(), BarrelDetLayer::surface(), swap(), theChi2Cut, HitTripletGeneratorFromPairAndLayers::theMaxElement, theNSigma, HitTripletGeneratorFromPairAndLayers::thePairGenerator, Bounds::thickness(), PV3DBase< T, PVType, FrameType >::z(), and beampixel_dqm_sourceclient-live_cfg::zRange.

 {
 
 //
 //edm::Handle<reco::BeamSpot> bsHandle;
 //ev.getByLabel( theBeamSpotTag, bsHandle);
 //if(!bsHandle.isValid()) return;
 //const reco::BeamSpot & bs = *bsHandle;
 //double errorXY = sqrt( sqr(bs.BeamWidthX()) + sqr(bs.BeamWidthY()) );
 //
 
   GlobalPoint bsPoint = region.origin();
   double errorXY = region.originRBound();
   GlobalVector shift =   bsPoint - GlobalPoint(0.,0.,0.);
 
   OrderedHitPairs pairs; pairs.reserve(30000);
   OrderedHitPairs::const_iterator ip;
   thePairGenerator->hitPairs(region,pairs,ev,es, pairLayers);
 
   if (pairs.size() ==0) return;
 
   int size = thirdLayers.size();
 
   const RecHitsSortedInPhi **thirdHitMap = new const RecHitsSortedInPhi*[size];
   for (int il=0; il <=size-1; il++) {
      thirdHitMap[il] = &(*theLayerCache)(thirdLayers[il], region, ev, es);
   }
 
   const DetLayer * firstLayer = thePairGenerator->innerLayer(pairLayers).detLayer();
   const DetLayer * secondLayer = thePairGenerator->outerLayer(pairLayers).detLayer();
   if (!firstLayer || !secondLayer) return;
 
   MultipleScatteringParametrisation sigma1RPhi( firstLayer, es);
   MultipleScatteringParametrisation sigma2RPhi( secondLayer, es);
 
   typedef RecHitsSortedInPhi::Hit Hit;
   for (ip = pairs.begin(); ip != pairs.end(); ip++) {
 
     GlobalPoint p1((*ip).inner()->globalPosition()-shift);
     GlobalPoint p2((*ip).outer()->globalPosition()-shift);
 
     ThirdHitPredictionFromInvLine  predictionRPhiTMP(p1, p2 );
     double pt_p1p2 = 1./PixelRecoUtilities::inversePt(predictionRPhiTMP.curvature(),es);
 
     PixelRecoPointRZ point1(p1.perp(), p1.z());
     PixelRecoPointRZ point2(p2.perp(), p2.z());
 
     PixelRecoLineRZ  line(point1, point2);
     double msRPhi1 = sigma1RPhi(pt_p1p2, line.cotLine(), 0.f);
     double msRPhi2 = sigma2RPhi(pt_p1p2,  line.cotLine(),point1);
     double sinTheta = 1/sqrt(1+sqr(line.cotLine()));
     double cosTheta = fabs(line.cotLine())/sqrt(1+sqr(line.cotLine()));
 
     double p1_errorRPhi = sqrt(sqr((*ip).inner()->errorGlobalRPhi())+sqr(msRPhi1) +sqr(errorXY));
     double p2_errorRPhi = sqrt(sqr((*ip).outer()->errorGlobalRPhi())+sqr(msRPhi2) +sqr(errorXY));
 
     ThirdHitPredictionFromInvLine  predictionRPhi(p1, p2, p1_errorRPhi, p2_errorRPhi );
 
     for (int il=0; il <=size-1; il++) {
 
       const DetLayer * layer = thirdLayers[il].detLayer();
       bool barrelLayer = (layer->location() == GeomDetEnumerators::barrel);
       MultipleScatteringParametrisation sigma3RPhi( layer, es);
       double msRPhi3 = sigma3RPhi(pt_p1p2, line.cotLine(),point2);
 
       Range rRange;
       if (barrelLayer) {
          const BarrelDetLayer& bl = dynamic_cast<const BarrelDetLayer&>(*layer);
          float halfThickness  = bl.surface().bounds().thickness()/2;
          float radius = bl.specificSurface().radius();
          rRange = Range(radius-halfThickness, radius+halfThickness);
       } else {
         const ForwardDetLayer& fl = dynamic_cast<const ForwardDetLayer&>(*layer);
         float halfThickness  = fl.surface().bounds().thickness()/2;
         float zLayer = fl.position().z() ;
         float zMin = zLayer-halfThickness;
         float zMax = zLayer+halfThickness;
         GlobalVector dr = p2-p1;
         GlobalPoint p3_a = p2+dr*(zMin-p2.z())/dr.z();
         GlobalPoint p3_b = p2+dr*(zMax-p2.z())/dr.z();
         if (zLayer * p3_a.z() < 0) continue;
         rRange = Range(p3_a.perp(), p3_b.perp());
         rRange.sort();
       }
       double displacment = shift.perp();
       GlobalPoint crossing1 = predictionRPhi.crossing(rRange.min()-displacment)+shift;
       GlobalPoint crossing2 = predictionRPhi.crossing(rRange.max()+displacment)+shift;
       float c1_phi= crossing1.phi(); 
       float c2_phi= crossing2.phi(); 
       if (c2_phi < c1_phi) swap(c1_phi,c2_phi); 
       if (c2_phi-c1_phi > M_PI) { c2_phi -= 2*M_PI;  swap(c1_phi,c2_phi); }
       double extraAngle = (displacment+theNSigma*msRPhi3)/rRange.min()+extraHitPhiToleranceForPreFiltering;
       c1_phi -= extraAngle; 
       c2_phi += extraAngle;
       vector<Hit> thirdHits = thirdHitMap[il]->hits(c1_phi, c2_phi) ;
 
       typedef vector<Hit>::const_iterator IH;
       for (IH th=thirdHits.begin(), eh=thirdHits.end(); th < eh; ++th) {
         GlobalPoint p3((*th)->globalPosition()-shift);
         double p3_errorRPhi = sqrt(sqr((*th)->errorGlobalRPhi()) +sqr(msRPhi3) + sqr(errorXY));
 
         predictionRPhi.add(p3,p3_errorRPhi);
 
         double curvature = predictionRPhi.curvature();
            
         ThirdHitZPrediction zPrediction( (*ip).inner()->globalPosition(), sqrt(sqr((*ip).inner()->errorGlobalR())+sqr(msRPhi1/cosTheta)), sqrt( sqr((*ip).inner()->errorGlobalZ())+ sqr(msRPhi1/sinTheta)), 
                                          (*ip).outer()->globalPosition(), sqrt(sqr((*ip).outer()->errorGlobalR())+sqr(msRPhi2/cosTheta)), sqrt( sqr((*ip).outer()->errorGlobalZ())+sqr(msRPhi2/sinTheta)), 
                                          curvature, theNSigma);
          ThirdHitZPrediction::Range zRange = zPrediction((*th)->globalPosition(), sqrt(sqr((*th)->errorGlobalR()))+sqr(msRPhi3/cosTheta));
          
          double z3Hit = (*th)->globalPosition().z(); 
          double z3HitError = theNSigma*(sqrt(sqr((*th)->errorGlobalZ()) + sqr(msRPhi3/sinTheta) ))+extraHitRZtolerance; 
          Range hitZRange(z3Hit-z3HitError, z3Hit+z3HitError); 
          bool inside = hitZRange.hasIntersection(zRange); 
 
          double curvatureMS = PixelRecoUtilities::curvature(1./region.ptMin(),es);
          bool ptCut = (predictionRPhi.curvature()-theNSigma*predictionRPhi.errorCurvature() < curvatureMS); 
          bool chi2Cut = (predictionRPhi.chi2() < theChi2Cut);
          if (inside && ptCut && chi2Cut) { 
        if (theMaxElement!=0 && result.size() >= theMaxElement){
          result.clear();
          edm::LogError("TooManyTriplets")<<" number of triples exceed maximum. no triplets produced.";
          delete [] thirdHitMap;
          return;
        }
        result.push_back( OrderedHitTriplet( (*ip).inner(), (*ip).outer(), *th)); 
      }
          predictionRPhi.remove(p3,p3_errorRPhi);
       } 
     }
   }
   delete [] thirdHitMap;
 }