#include <PixelTripletHLTGenerator.h>

Inheritance diagram for PixelTripletHLTGenerator:

Public Member Functions
virtual void	hitTriplets (const TrackingRegion &region, OrderedHitTriplets &trs, const edm::Event &ev, const edm::EventSetup &es)

virtual void	init (const HitPairGenerator &pairs, const std::vector< ctfseeding::SeedingLayer > &layers, LayerCacheType *layerCache)

const HitPairGenerator &	pairGenerator () const

	PixelTripletHLTGenerator (const edm::ParameterSet &cfg)

const std::vector < ctfseeding::SeedingLayer > &	thirdLayers () const

virtual	~PixelTripletHLTGenerator ()

Public Member Functions inherited from HitTripletGeneratorFromPairAndLayers
virtual	~HitTripletGeneratorFromPairAndLayers ()

Public Member Functions inherited from HitTripletGenerator
virtual void	clear ()

	HitTripletGenerator (unsigned int size=500)

virtual void	hitTriplets (const TrackingRegion &reg, OrderedHitTriplets &prs, const edm::EventSetup &es)

virtual const OrderedHitTriplets &	run (const TrackingRegion &region, const edm::Event &ev, const edm::EventSetup &es)

virtual	~HitTripletGenerator ()

Public Member Functions inherited from OrderedHitsGenerator
	OrderedHitsGenerator ()

virtual	~OrderedHitsGenerator ()

Private Types
typedef CombinedHitTripletGenerator::LayerCacheType	LayerCacheType

Private Member Functions
bool	checkPhiInRange (float phi, float phi1, float phi2) const

std::pair< float, float >	mergePhiRanges (const std::pair< float, float > &r1, const std::pair< float, float > &r2) const

Private Attributes
float	dphi

float	extraHitRPhitolerance

float	extraHitRZtolerance

LayerCacheType *	theLayerCache

std::vector < ctfseeding::SeedingLayer >	theLayers

HitPairGenerator *	thePairGenerator

bool	useBend

bool	useFixedPreFiltering

bool	useMScat

Additional Inherited Members
Public Types inherited from HitTripletGeneratorFromPairAndLayers
typedef CombinedHitTripletGenerator::LayerCacheType	LayerCacheType

Public Attributes inherited from OrderedHitsGenerator
unsigned int	theMaxElement

Detailed Description

A HitTripletGenerator from HitPairGenerator and vector of Layers. The HitPairGenerator provides a set of hit pairs. For each pair the search for compatible hit(s) is done among provided Layers

Definition at line 22 of file PixelTripletHLTGenerator.h.

Member Typedef Documentation

typedef CombinedHitTripletGenerator::LayerCacheType PixelTripletHLTGenerator::LayerCacheType

private

Definition at line 24 of file PixelTripletHLTGenerator.h.

Constructor & Destructor Documentation

PixelTripletHLTGenerator::PixelTripletHLTGenerator ( const edm::ParameterSet & cfg )

Definition at line 23 of file PixelTripletHLTGenerator.cc.

References dphi, edm::ParameterSet::getParameter(), OrderedHitsGenerator::theMaxElement, and useFixedPreFiltering.

     : thePairGenerator(0),
       theLayerCache(0),
       useFixedPreFiltering(cfg.getParameter<bool>("useFixedPreFiltering")),
       extraHitRZtolerance(cfg.getParameter<double>("extraHitRZtolerance")),
       extraHitRPhitolerance(cfg.getParameter<double>("extraHitRPhitolerance")),
       useMScat(cfg.getParameter<bool>("useMultScattering")),
       useBend(cfg.getParameter<bool>("useBending"))
 {
   theMaxElement=cfg.getParameter<unsigned int>("maxElement");
   dphi =  (useFixedPreFiltering) ?  cfg.getParameter<double>("phiPreFiltering") : 0;
 }

virtual PixelTripletHLTGenerator::~PixelTripletHLTGenerator ( )

inlinevirtual

Definition at line 29 of file PixelTripletHLTGenerator.h.

References thePairGenerator.

29 { delete thePairGenerator; }

PixelTripletHLTGenerator::thePairGenerator

HitPairGenerator * thePairGenerator

Definition: PixelTripletHLTGenerator.h:46

Member Function Documentation

bool PixelTripletHLTGenerator::checkPhiInRange	(	float	phi,
		float	phi1,
		float	phi2
	)		const

private

Definition at line 196 of file PixelTripletHLTGenerator.cc.

References Geom::ftwoPi().

Referenced by hitTriplets().

 {
   while (phi > phi2) phi -=  Geom::ftwoPi();
   while (phi < phi1) phi +=  Geom::ftwoPi();
   return (  (phi1 <= phi) && (phi <= phi2) );
 }  

void PixelTripletHLTGenerator::hitTriplets	(	const TrackingRegion &	region,
		OrderedHitTriplets &	trs,
		const edm::Event &	ev,
		const edm::EventSetup &	es
	)

virtual

Implements HitTripletGenerator.

Definition at line 46 of file PixelTripletHLTGenerator.cc.

References GeomDetEnumerators::barrel, checkPhiInRange(), PixelRecoUtilities::curvature(), dphi, extraHitRPhitolerance, extraHitRZtolerance, f, HitPairGenerator::hitPairs(), ThirdHitRZPredictionBase::initLayer(), ThirdHitRZPrediction< Propagator >::initPropagator(), PixelRecoRange< T >::intersection(), geometryCSVtoXML::line, DetLayer::location(), max(), PixelRecoRange< T >::max(), mergePhiRanges(), min, nSigmaPhi, nSigmaRZ, TrackingRegion::origin(), TrackingRegion::originRBound(), PV3DBase< T, PVType, FrameType >::perp(), point, TrackingRegion::ptMin(), CosmicsPD_Skims::radius, OrderedHitTriplets::size(), findQualityFiles::size, mathSSE::sqrt(), PixelRecoRange< T >::sum(), theLayers, OrderedHitsGenerator::theMaxElement, thePairGenerator, useBend, useFixedPreFiltering, useMScat, PV3DBase< T, PVType, FrameType >::x(), Hit::x, PV3DBase< T, PVType, FrameType >::y(), Hit::y, and PV3DBase< T, PVType, FrameType >::z().

 {
   OrderedHitPairs pairs; pairs.reserve(30000);
   OrderedHitPairs::const_iterator ip;
   
   thePairGenerator->hitPairs(region,pairs,ev,es);
 
   if (pairs.empty()) return;
 
   int size = theLayers.size();
 
   typedef std::vector<ThirdHitRZPrediction<PixelRecoLineRZ> >  Preds;
   Preds preds(size);
 
   std::vector<const RecHitsSortedInPhi *> thirdHitMap(size);
   typedef RecHitsSortedInPhi::Hit Hit;
   vector<Hit> thirdHits;
 
   // fill the prediciton vetor
   for (int il=0; il!=size; ++il) {
      thirdHitMap[il] = &(*theLayerCache)(&theLayers[il], region, ev, es);
      ThirdHitRZPrediction<PixelRecoLineRZ> & pred = preds[il];
      pred.initLayer(theLayers[il].detLayer());
      pred.initTolerance(extraHitRZtolerance);
   }
 
 
   double imppar = region.originRBound();
   double curv = PixelRecoUtilities::curvature(1/region.ptMin(), es);
 
   for (ip = pairs.begin(); ip != pairs.end(); ip++) {
   
     GlobalPoint gp1tmp = (*ip).inner()->globalPosition();
     GlobalPoint gp2tmp = (*ip).outer()->globalPosition();
     GlobalPoint gp1(gp1tmp.x()-region.origin().x(), gp1tmp.y()-region.origin().y(), gp1tmp.z());
     GlobalPoint gp2(gp2tmp.x()-region.origin().x(), gp2tmp.y()-region.origin().y(), gp2tmp.z());
 
     PixelRecoPointRZ point1(gp1.perp(), gp1.z());
     PixelRecoPointRZ point2(gp2.perp(), gp2.z());
     PixelRecoLineRZ  line(point1, point2);
     ThirdHitPredictionFromInvParabola predictionRPhi(gp1,gp2,imppar,curv,extraHitRPhitolerance);
     ThirdHitPredictionFromInvParabola predictionRPhitmp(gp1tmp,gp2tmp,imppar+region.origin().perp(),curv,extraHitRPhitolerance);
 
 
     for (int il=0; il!=size; ++il) {
       const DetLayer * layer = theLayers[il].detLayer();
 //      bool pixelLayer = (    layer->subDetector() == GeomDetEnumerators::PixelBarrel 
 //                          || layer->subDetector() == GeomDetEnumerators::PixelEndcap); 
       bool barrelLayer = (layer->location() == GeomDetEnumerators::barrel);
 
       ThirdHitCorrection correction(es, region.ptMin(), layer, line, point2, useMScat, useBend); 
       
       ThirdHitRZPrediction<PixelRecoLineRZ> & predictionRZ =  preds[il];
 
       predictionRZ.initPropagator(&line);
       Range rzRange = predictionRZ();
 
       correction.correctRZRange(rzRange);
       Range phiRange;
       if (useFixedPreFiltering) { 
         float phi0 = (*ip).outer()->globalPosition().phi();
         phiRange = Range(phi0-dphi,phi0+dphi);
       }
       else {
         Range radius;
         if (barrelLayer) {
           radius =  predictionRZ.detRange();
         } else {
           radius = Range(
               max(rzRange.min(), predictionRZ.detSize().min()),
               min(rzRange.max(), predictionRZ.detSize().max()) );
         }
         if (radius.empty()) continue;
         Range rPhi1m = predictionRPhitmp(radius.max(), -1);
         Range rPhi1p = predictionRPhitmp(radius.max(),  1);
         Range rPhi2m = predictionRPhitmp(radius.min(), -1);
         Range rPhi2p = predictionRPhitmp(radius.min(),  1);
         Range rPhi1 = rPhi1m.sum(rPhi1p);
         Range rPhi2 = rPhi2m.sum(rPhi2p);
         correction.correctRPhiRange(rPhi1);
         correction.correctRPhiRange(rPhi2);
         rPhi1.first  /= radius.max();
         rPhi1.second /= radius.max();
         rPhi2.first  /= radius.min();
         rPhi2.second /= radius.min();
         phiRange = mergePhiRanges(rPhi1,rPhi2);
       }
       
 //      LayerHitMapLoop thirdHits = 
 //          pixelLayer ? thirdHitMap[il]->loop(phiRange, rzRange) : 
 //          thirdHitMap[il]->loop();
 
       thirdHits.clear();
       thirdHitMap[il]->hits(phiRange.min(),phiRange.max(), thirdHits);
   
       static float nSigmaRZ = std::sqrt(12.f);
       static float nSigmaPhi = 3.f;
    
       typedef vector<Hit>::const_iterator IH;
       for (IH th=thirdHits.begin(), eh=thirdHits.end(); th !=eh; ++th) {
 
         if (theMaxElement!=0 && result.size() >= theMaxElement){
       result.clear();
       edm::LogError("TooManyTriplets")<<" number of triples exceed maximum. no triplets produced.";
       return;
     }
         const Hit& hit = (*th);
         GlobalPoint point(hit->globalPosition().x()-region.origin().x(),
                           hit->globalPosition().y()-region.origin().y(),
                           hit->globalPosition().z() ); 
         float p3_r = point.perp();
         float p3_z = point.z();
         float p3_phi = point.phi();
  
         if (barrelLayer) {
           Range allowedZ = predictionRZ(p3_r);
           correction.correctRZRange(allowedZ);
 
           float zErr = nSigmaRZ * std::sqrt(float(hit->globalPositionError().czz()));
           Range hitRange(p3_z-zErr, p3_z+zErr);
           Range crossingRange = allowedZ.intersection(hitRange);
           if (crossingRange.empty())  continue;
         } else {
           Range allowedR = predictionRZ(p3_z);
           correction.correctRZRange(allowedR); 
           float rErr = nSigmaRZ * std::sqrt(float(hit->globalPositionError().rerr( hit->globalPosition())));
           Range hitRange(p3_r-rErr, p3_r+rErr);
           Range crossingRange = allowedR.intersection(hitRange);
           if (crossingRange.empty())  continue;
         }
 
     float phiErr = nSigmaPhi*std::sqrt(float(hit->globalPositionError().phierr(hit->globalPosition())));
         for (int icharge=-1; icharge <=1; icharge+=2) {
           Range rangeRPhi = predictionRPhi(p3_r, icharge);
           correction.correctRPhiRange(rangeRPhi);
           if (checkPhiInRange(p3_phi, rangeRPhi.first/p3_r-phiErr, rangeRPhi.second/p3_r+phiErr)) {
             result.push_back( OrderedHitTriplet( (*ip).inner(), (*ip).outer(), hit)); 
             break;
           } 
         }
       } 
     }
   }
 
 }

void PixelTripletHLTGenerator::init	(	const HitPairGenerator &	pairs,
		const std::vector< ctfseeding::SeedingLayer > &	layers,
		LayerCacheType *	layerCache
	)

virtual

Implements HitTripletGeneratorFromPairAndLayers.

Definition at line 37 of file PixelTripletHLTGenerator.cc.

References HitPairGenerator::clone(), theLayerCache, theLayers, and thePairGenerator.

 {
   thePairGenerator = pairs.clone();
   theLayers = layers;
   theLayerCache = layerCache;
 }

std::pair< float, float > PixelTripletHLTGenerator::mergePhiRanges	(	const std::pair< float, float > &	r1,
		const std::pair< float, float > &	r2
	)		const

private

Definition at line 203 of file PixelTripletHLTGenerator.cc.

References Geom::fpi(), Geom::ftwoPi(), max(), and min.

Referenced by hitTriplets().

 {
   float r2_min=r2.first;
   float r2_max=r2.second;
   while (r1.first-r2_min > Geom::fpi()) { r2_min += Geom::ftwoPi(); r2_max += Geom::ftwoPi();}
   while (r1.first-r2_min < -Geom::fpi()) { r2_min -= Geom::ftwoPi();  r2_max -= Geom::ftwoPi(); }
   
   return std::make_pair(min(r1.first,r2_min),max(r1.second,r2_max));
 }