| 1 |
bendavid |
1.12 |
// $Id: HitDropper.cc,v 1.11 2009/12/15 23:27:34 bendavid Exp $
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bendavid |
1.1 |
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| 3 |
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#include "MitEdm/Producers/interface/HitDropper.h"
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bendavid |
1.2 |
#include "DataFormats/TrackingRecHit/interface/InvalidTrackingRecHit.h"
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| 5 |
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#include "DataFormats/TrajectorySeed/interface/PropagationDirection.h"
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bendavid |
1.8 |
#include "DataFormats/SiPixelDetId/interface/PXBDetId.h"
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#include "DataFormats/SiPixelDetId/interface/PXFDetId.h"
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#include "DataFormats/SiStripDetId/interface/TIBDetId.h"
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#include "DataFormats/SiStripDetId/interface/TIDDetId.h"
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#include "DataFormats/SiStripDetId/interface/TOBDetId.h"
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#include "DataFormats/SiStripDetId/interface/TECDetId.h"
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#include "DataFormats/MuonDetId/interface/DTLayerId.h"
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#include "DataFormats/MuonDetId/interface/CSCDetId.h"
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#include "DataFormats/MuonDetId/interface/RPCDetId.h"
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bendavid |
1.2 |
#include "TrackingTools/GeomPropagators/interface/HelixArbitraryPlaneCrossing.h"
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bendavid |
1.1 |
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using namespace edm;
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using namespace mitedm;
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//--------------------------------------------------------------------------------------------------
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reco::HitPattern HitDropper::CorrectedHits(const reco::TransientTrack *tTrack,
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loizides |
1.4 |
const ThreeVector &vtxPos) const
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bendavid |
1.1 |
{
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loizides |
1.4 |
// Return reco::HitPattern structure for the given track with all hits occuring before vtxPos
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// on the track (relative to the primary vertex if given) removed.
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// This version of the function uses an iterative helix-plane intersector and does not (yet)
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// take into account the uncertainties in vertex position.
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bendavid |
1.2 |
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const GlobalPoint vtxPoint(vtxPos.x(),vtxPos.y(),vtxPos.z());
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const TrajectoryStateClosestToPoint vtxTSCP = tTrack->trajectoryStateClosestToPoint(vtxPoint);
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bendavid |
1.1 |
reco::HitPattern hitPattern;
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int nHits = 0;
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for (uint hi=0; hi<tTrack->recHitsSize(); ++hi) {
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const TrackingRecHit *hit = tTrack->recHit(hi).get();
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mrudolph |
1.3 |
DetId geoId = hit->geographicalId();
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if(geoId == uint32_t(0)) continue;
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const GeomDet *det = trackerGeo_->idToDet(geoId);
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bendavid |
1.2 |
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loizides |
1.7 |
HelixArbitraryPlaneCrossing c(HelixPlaneCrossing::PositionType(vtxTSCP.theState().position()),
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HelixPlaneCrossing::DirectionType(vtxTSCP.theState().momentum()),
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vtxTSCP.theState().transverseCurvature(),
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anyDirection);
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bendavid |
1.2 |
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loizides |
1.7 |
std::pair<bool,double> crossResult = c.pathLength(det->surface());
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bendavid |
1.2 |
if ( crossResult.first && crossResult.second >= 0 ) {
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bendavid |
1.1 |
hitPattern.set(*hit,nHits);
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nHits++;
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}
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}
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bendavid |
1.2 |
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bendavid |
1.1 |
return hitPattern;
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}
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//--------------------------------------------------------------------------------------------------
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reco::HitPattern HitDropper::CorrectedHits(const reco::Track *track,
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loizides |
1.4 |
const ThreeVector &vtxPos) const
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bendavid |
1.1 |
{
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loizides |
1.4 |
// Build the transient track and then return the corrected HitPattern.
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bendavid |
1.1 |
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reco::TransientTrack tTrack = builder_->build(track);
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bendavid |
1.2 |
return CorrectedHits(&tTrack, vtxPos);
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}
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//--------------------------------------------------------------------------------------------------
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reco::HitPattern HitDropper::CorrectedHits(const reco::Track *track,
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loizides |
1.4 |
const ThreeVector &vtxPos,
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const ThreeVector &trkMom,
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Double_t lxyError,
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Double_t lzError,
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Double_t sigmaTolerance) const
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bendavid |
1.2 |
{
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loizides |
1.4 |
// Return reco::HitPattern structure for the given track with all hits occuring before vtxPos
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// on the track (relative to the primary vertex if given) removed.
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// This version of the function determines this completely analytically, and taking the
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// vertex position uncertainty into account, which might be important for particles which decay
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// within a tracker layer.
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bendavid |
1.2 |
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bendavid |
1.8 |
const LocalPoint nullLocal(0,0,0);
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bendavid |
1.2 |
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reco::HitPattern hitPattern;
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int nHits = 0;
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for (uint hi=0; hi<track->recHitsSize(); ++hi) {
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const TrackingRecHit *hit = track->recHit(hi).get();
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mrudolph |
1.3 |
DetId geoId = hit->geographicalId();
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if(geoId == uint32_t(0)) continue;
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const GeomDet *det = trackerGeo_->idToDet(geoId);
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bendavid |
1.8 |
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const GlobalPoint cPos = det->toGlobal(nullLocal);
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| 90 |
bendavid |
1.2 |
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loizides |
1.7 |
const ThreeVector crossPos(cPos.x(), cPos.y(), cPos.z());
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bendavid |
1.2 |
const ThreeVector delta = crossPos - vtxPos;
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bendavid |
1.8 |
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bendavid |
1.2 |
Double_t lengthOverSigma = 0;
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//calculate distance between vertex and approximate hit position, projected into
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//the appropriate plane/axis and compared to the uncertainty in vertex position
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//in that plane/axis
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if (IsBarrel(det)) {
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const ThreeVector trkMomXY(trkMom.x(), trkMom.y(), 0.0);
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Double_t deltaXY = delta.Dot(trkMomXY)/trkMomXY.R();
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lengthOverSigma = deltaXY/lxyError;
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}
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else if (IsDisk(det)) {
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Double_t deltaZ = delta.z()*trkMom.z()/fabs(trkMom.z());
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lengthOverSigma = deltaZ/lzError;
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}
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else
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throw edm::Exception(edm::errors::Configuration, "HitDropper::CorrectedHits\n")
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<< "Error! Detector element not in a valid barrel or disk layer." << std::endl;
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loizides |
1.7 |
//add the hit only if it is after the vertex,
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//allowing for some uncertainty in the vertex position
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bendavid |
1.2 |
if ( lengthOverSigma>(-sigmaTolerance) ) {
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hitPattern.set(*hit,nHits);
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nHits++;
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}
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}
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return hitPattern;
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bendavid |
1.1 |
}
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bendavid |
1.5 |
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| 122 |
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//--------------------------------------------------------------------------------------------------
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| 124 |
bendavid |
1.12 |
std::pair<reco::HitPattern,uint> HitDropper::CorrectedHitsAOD(const reco::Track *track,
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| 125 |
bendavid |
1.5 |
const ThreeVector &vtxPos,
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const ThreeVector &trkMom,
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Double_t lxyError,
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Double_t lzError,
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Double_t sigmaTolerance) const
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{
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// Return reco::HitPattern structure for the given track with all hits occuring before vtxPos
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// on the track (relative to the primary vertex if given) removed.
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// This version of the function determines this completely analytically, and taking the
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| 134 |
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// vertex position uncertainty into account, which might be important for particles which decay
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| 135 |
bendavid |
1.8 |
// within a tracker layer. In order to function in AOD, the tracker geometry is used in an
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// approximate way, at the level of barrel and disk layers. The layer thickness is taken
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// into account in the uncertainty tolerance.
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bendavid |
1.5 |
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bendavid |
1.8 |
//Figure out whether we should use the +z or -z side in the case of a disk layer
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int side = 0;
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if (track->pz() < 0)
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side = -1;
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else
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side = 1;
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bendavid |
1.5 |
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bendavid |
1.8 |
int nHits = 0;
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reco::HitPattern hitPattern;
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bendavid |
1.10 |
const reco::HitPattern* inHitPatterns[3];
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inHitPatterns[0] = &track->hitPattern();
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inHitPatterns[1] = &track->trackerExpectedHitsInner();
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inHitPatterns[2] = &track->trackerExpectedHitsOuter();
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| 153 |
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| 154 |
bendavid |
1.12 |
uint nWrongHits = 0;
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bendavid |
1.10 |
for (Int_t hp=0; hp<3; ++hp) {
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const reco::HitPattern &inhits = *inHitPatterns[hp];
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for (Int_t hi=0; hi<inhits.numberOfHits(); hi++) {
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| 159 |
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uint32_t hit = inhits.getHitPattern(hi);
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| 160 |
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uint32_t subdet = inhits.getSubStructure(hit);
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uint32_t layerid = inhits.getLayer(hit);
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| 162 |
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const DetLayer *det = FindLayer(subdet,layerid,side);
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if (!det) continue;
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| 164 |
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bool goodHit = false;
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| 166 |
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//calculate distance between vertex and approximate hit position, projected into
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| 168 |
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//the appropriate plane/axis and compared to the uncertainty in vertex position
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| 169 |
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//in that plane/axis
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| 170 |
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if (det->location()==GeomDetEnumerators::barrel) {
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const BarrelDetLayer *barrelDet = static_cast<const BarrelDetLayer*>(det);
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| 172 |
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| 173 |
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const double barrelRho = barrelDet->specificSurface().radius();
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| 174 |
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const double barrelHalfThickness = barrelDet->specificSurface().bounds().thickness()/2.0;
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| 175 |
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const ThreeVector crossPos(barrelRho*cos(track->phi()),barrelRho*sin(track->phi()),0.0);
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| 176 |
bendavid |
1.8 |
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| 177 |
bendavid |
1.10 |
const ThreeVector delta = crossPos - vtxPos;
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| 178 |
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const ThreeVector trkMomXY(trkMom.x(), trkMom.y(), 0.0);
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| 179 |
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const double deltaXY = delta.Dot(trkMomXY)/trkMomXY.R();
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| 180 |
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goodHit = deltaXY>(-sigmaTolerance*lxyError - barrelHalfThickness);
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| 181 |
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}
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| 182 |
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else if (det->location()==GeomDetEnumerators::endcap) {
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| 183 |
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const ForwardDetLayer *forwardDet = static_cast<const ForwardDetLayer*>(det);
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| 184 |
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const double diskZ = forwardDet->specificSurface().position().z();
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| 185 |
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const double diskHalfThickness = forwardDet->specificSurface().bounds().thickness()/2.0;
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| 186 |
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const double deltaZ = (diskZ - vtxPos.z())*trkMom.z()/fabs(trkMom.z());;
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| 187 |
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goodHit = deltaZ>(-sigmaTolerance*lzError - diskHalfThickness);
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| 188 |
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}
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| 189 |
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else
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| 190 |
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throw edm::Exception(edm::errors::Configuration, "HitDropper::CorrectedHitsAOD\n")
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| 191 |
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<< "Error! Detector element not in a valid barrel or disk layer." << std::endl;
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| 192 |
bendavid |
1.5 |
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| 193 |
bendavid |
1.10 |
//add the hit only if it is after the vertex,
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| 194 |
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//allowing for some uncertainty in the vertex position
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| 195 |
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if ( goodHit ) {
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| 196 |
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bool isStereo = inhits.getSide(hit);
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| 197 |
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DetId dummyid = det->basicComponents().front()->geographicalId();
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| 198 |
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if (isStereo) {
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| 199 |
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dummyid = StereoDetId(dummyid);
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| 200 |
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}
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| 201 |
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| 202 |
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const TrackingRecHit::Type hitType = static_cast<TrackingRecHit::Type>(inhits.getHitType(hit));
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| 203 |
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InvalidTrackingRecHit dummyhit(dummyid, hitType);
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| 204 |
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hitPattern.set(dummyhit,nHits);
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| 205 |
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if ( hit != hitPattern.getHitPattern(nHits) )
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| 206 |
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throw edm::Exception(edm::errors::Configuration, "HitDropper::CorrectedHitsAOD\n")
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| 207 |
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<< "Error! Mismatch in copying hit pattern." << std::endl;
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| 208 |
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| 209 |
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nHits++;
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| 210 |
bendavid |
1.12 |
}
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| 211 |
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else {
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| 212 |
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if (inhits.validHitFilter(hit)) {
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| 213 |
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if (inhits.trackerHitFilter(hit)) {
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| 214 |
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nWrongHits++;
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| 215 |
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}
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| 216 |
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}
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| 217 |
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}
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| 218 |
bendavid |
1.8 |
}
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| 219 |
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}
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| 220 |
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| 221 |
bendavid |
1.12 |
return std::pair<reco::HitPattern,uint>(hitPattern,nWrongHits);
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| 222 |
bendavid |
1.8 |
}
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| 223 |
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| 224 |
bendavid |
1.11 |
reco::HitPattern HitDropper::SharedHits(const reco::Track *t1, const reco::Track *t2) const
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| 225 |
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{
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| 226 |
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//Return a hit pattern corresponding to the hits on the two tracks which share clusters
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| 227 |
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| 228 |
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int nHits = 0;
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| 229 |
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reco::HitPattern sharedHits;
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| 230 |
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| 231 |
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if (!t1->extra().isAvailable() || !t2->extra().isAvailable())
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| 232 |
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return sharedHits;
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| 233 |
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| 234 |
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for (trackingRecHit_iterator iHit1 = t1->recHitsBegin(); iHit1 != t1->recHitsEnd(); ++iHit1) {
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| 235 |
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const TrackingRecHit *hit1 = iHit1->get();
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| 236 |
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if (hit1->isValid()) {
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| 237 |
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for (trackingRecHit_iterator iHit2 = t2->recHitsBegin(); iHit2 != t2->recHitsEnd(); ++iHit2) {
|
| 238 |
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const TrackingRecHit *hit2 = iHit2->get();
|
| 239 |
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if (hit2->isValid() && hit1->sharesInput(hit2,TrackingRecHit::some)) {
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| 240 |
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sharedHits.set(*hit1,nHits);
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| 241 |
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nHits++;
|
| 242 |
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}
|
| 243 |
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}
|
| 244 |
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}
|
| 245 |
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}
|
| 246 |
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| 247 |
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return sharedHits;
|
| 248 |
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| 249 |
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}
|
| 250 |
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| 251 |
bendavid |
1.8 |
//--------------------------------------------------------------------------------------------------
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| 252 |
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const DetLayer *HitDropper::FindLayer(int subdet, int layer, int side) const
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| 253 |
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{
|
| 254 |
loizides |
1.9 |
// Find a given layer.
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| 255 |
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| 256 |
bendavid |
1.8 |
switch(subdet) {
|
| 257 |
loizides |
1.9 |
case StripSubdetector::TIB:
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| 258 |
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//edm::LogInfo(TkDetLayers) << "TIB layer n: " << TIBDetId(id).layer() ;
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| 259 |
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return trackerGeoSearch_->tibLayers().at(layer-1);
|
| 260 |
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break;
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| 261 |
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| 262 |
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case StripSubdetector::TOB:
|
| 263 |
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//edm::LogInfo(TkDetLayers) << "TOB layer n: " << TOBDetId(id).layer() ;
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| 264 |
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return trackerGeoSearch_->tobLayers().at(layer-1);
|
| 265 |
|
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break;
|
| 266 |
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| 267 |
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case StripSubdetector::TID:
|
| 268 |
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//edm::LogInfo(TkDetLayers) << "TID wheel n: " << TIDDetId(id).wheel() ;
|
| 269 |
|
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if( side == -1 ) {
|
| 270 |
|
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return trackerGeoSearch_->negTidLayers().at(layer-1);
|
| 271 |
|
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}else if( side == 1 ) {
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| 272 |
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return trackerGeoSearch_->posTidLayers().at(layer-1);
|
| 273 |
|
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}
|
| 274 |
|
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break;
|
| 275 |
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| 276 |
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case StripSubdetector::TEC:
|
| 277 |
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//edm::LogInfo(TkDetLayers) << "TEC wheel n: " << TECDetId(id).wheel() ;
|
| 278 |
|
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if( side == -1 ) {
|
| 279 |
|
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return trackerGeoSearch_->negTecLayers().at(layer-1);
|
| 280 |
|
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} else if( side == 1 ) {
|
| 281 |
|
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return trackerGeoSearch_->posTecLayers().at(layer-1);
|
| 282 |
|
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}
|
| 283 |
|
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break;
|
| 284 |
bendavid |
1.8 |
|
| 285 |
loizides |
1.9 |
case PixelSubdetector::PixelBarrel:
|
| 286 |
|
|
//edm::LogInfo(TkDetLayers) << "PixelBarrel layer n: " << PXBDetId(id).layer() ;
|
| 287 |
|
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return trackerGeoSearch_->pixelBarrelLayers().at(layer-1);
|
| 288 |
|
|
break;
|
| 289 |
bendavid |
1.8 |
|
| 290 |
loizides |
1.9 |
case PixelSubdetector::PixelEndcap:
|
| 291 |
|
|
//edm::LogInfo(TkDetLayers) << "PixelEndcap disk n: " << PXFDetId(id).disk() ;
|
| 292 |
|
|
if(side == -1 ) {
|
| 293 |
|
|
return trackerGeoSearch_->negPixelForwardLayers().at(layer-1);
|
| 294 |
|
|
}else if( side == 1 ) {
|
| 295 |
|
|
return trackerGeoSearch_->posPixelForwardLayers().at(layer-1);
|
| 296 |
|
|
}
|
| 297 |
|
|
break;
|
| 298 |
bendavid |
1.8 |
|
| 299 |
loizides |
1.9 |
default:
|
| 300 |
|
|
return 0;
|
| 301 |
|
|
// throw(something);
|
| 302 |
bendavid |
1.8 |
}
|
| 303 |
|
|
return 0; //just to avoid compile warnings
|
| 304 |
|
|
}
|
| 305 |
|
|
|
| 306 |
loizides |
1.9 |
//--------------------------------------------------------------------------------------------------
|
| 307 |
bendavid |
1.8 |
DetId HitDropper::StereoDetId(const DetId &i) const
|
| 308 |
|
|
{
|
| 309 |
loizides |
1.9 |
// Deal with stereo det id.
|
| 310 |
|
|
|
| 311 |
bendavid |
1.8 |
switch (i.det()) {
|
| 312 |
loizides |
1.9 |
case DetId::Tracker:
|
| 313 |
bendavid |
1.8 |
switch (i.subdetId()) {
|
| 314 |
loizides |
1.9 |
case PixelSubdetector::PixelBarrel:
|
| 315 |
|
|
case PixelSubdetector::PixelEndcap:
|
| 316 |
|
|
return 0;
|
| 317 |
|
|
case StripSubdetector::TIB:
|
| 318 |
|
|
{
|
| 319 |
|
|
TIBDetId id = i;
|
| 320 |
|
|
if (id.isStereo())
|
| 321 |
|
|
return id;
|
| 322 |
|
|
else {
|
| 323 |
|
|
const std::vector<unsigned int> idString = id.string();
|
| 324 |
|
|
return TIBDetId(id.layer(),idString[0],idString[1],idString[2],id.module(),1);
|
| 325 |
|
|
}
|
| 326 |
|
|
}
|
| 327 |
|
|
case StripSubdetector::TID:
|
| 328 |
|
|
{
|
| 329 |
|
|
TIDDetId id = i;
|
| 330 |
|
|
if (id.isStereo())
|
| 331 |
|
|
return id;
|
| 332 |
|
|
else {
|
| 333 |
|
|
const std::vector<unsigned int> idModule = id.module();
|
| 334 |
|
|
return TIDDetId(id.side(),id.wheel(),id.ring(),idModule[0],idModule[1],1);
|
| 335 |
|
|
}
|
| 336 |
|
|
}
|
| 337 |
bendavid |
1.8 |
case StripSubdetector::TOB:
|
| 338 |
|
|
{
|
| 339 |
loizides |
1.9 |
TOBDetId id = i;
|
| 340 |
|
|
if (id.isStereo())
|
| 341 |
|
|
return id;
|
| 342 |
|
|
else {
|
| 343 |
|
|
const std::vector<unsigned int> idRod = id.rod();
|
| 344 |
|
|
return TOBDetId(id.layer(),idRod[0],idRod[1],id.module(),1);
|
| 345 |
|
|
}
|
| 346 |
bendavid |
1.8 |
}
|
| 347 |
loizides |
1.9 |
case StripSubdetector::TEC:
|
| 348 |
|
|
{
|
| 349 |
bendavid |
1.8 |
TECDetId id = i;
|
| 350 |
|
|
if (id.isStereo())
|
| 351 |
|
|
return id;
|
| 352 |
|
|
else {
|
| 353 |
|
|
const std::vector<unsigned int> idPetal = id.petal();
|
| 354 |
|
|
return TECDetId(id.side(),id.wheel(),idPetal[0],idPetal[1],id.ring(),id.module(),1);
|
| 355 |
|
|
}
|
| 356 |
loizides |
1.9 |
}
|
| 357 |
|
|
default:
|
| 358 |
|
|
return 0;
|
| 359 |
bendavid |
1.8 |
}
|
| 360 |
|
|
break;
|
| 361 |
loizides |
1.9 |
default:
|
| 362 |
bendavid |
1.8 |
return 0;
|
| 363 |
bendavid |
1.5 |
}
|
| 364 |
|
|
}
|
