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File indexing completed on 2021-02-14 14:26:19

0001 /** \file
0002  *
0003  */
0004 
0005 #include "RecoMuon/TransientTrackingRecHit/interface/MuonTransientTrackingRecHit.h"
0006 #include "Geometry/CommonDetUnit/interface/GeomDet.h"
0007 
0008 #include "DataFormats/GeometryCommonDetAlgo/interface/ErrorFrameTransformer.h"
0009 #include "DataFormats/MuonDetId/interface/MuonSubdetId.h"
0010 #include "DataFormats/GeometryCommonDetAlgo/interface/AlignmentPositionError.h"
0011 #include "FWCore/MessageLogger/interface/MessageLogger.h"
0012 
0013 #include "FWCore/Utilities/interface/Exception.h"
0014 
0015 #include <map>
0016 
0017 typedef MuonTransientTrackingRecHit::MuonRecHitPointer MuonRecHitPointer;
0018 typedef MuonTransientTrackingRecHit::RecHitContainer MuonRecHitContainer;
0019 
0020 MuonTransientTrackingRecHit::MuonTransientTrackingRecHit(const GeomDet* geom, const TrackingRecHit* rh)
0021     : GenericTransientTrackingRecHit(*geom, *rh) {}
0022 
0023 MuonTransientTrackingRecHit::MuonTransientTrackingRecHit(const MuonTransientTrackingRecHit& other)
0024     : GenericTransientTrackingRecHit(*other.det(), *(other.hit())) {}
0025 
0026 LocalVector MuonTransientTrackingRecHit::localDirection() const {
0027   if (dynamic_cast<const RecSegment*>(hit()))
0028     return dynamic_cast<const RecSegment*>(hit())->localDirection();
0029   else
0030     return LocalVector(0., 0., 0.);
0031 }
0032 
0033 LocalError MuonTransientTrackingRecHit::localDirectionError() const {
0034   if (dynamic_cast<const RecSegment*>(hit()))
0035     return dynamic_cast<const RecSegment*>(hit())->localDirectionError();
0036   else
0037     return LocalError(0., 0., 0.);
0038 }
0039 
0040 GlobalVector MuonTransientTrackingRecHit::globalDirection() const {
0041   return (det()->surface().toGlobal(localDirection()));
0042 }
0043 
0044 GlobalError MuonTransientTrackingRecHit::globalDirectionError() const {
0045   return ErrorFrameTransformer().transform(localDirectionError(), (det()->surface()));
0046 }
0047 
0048 AlgebraicSymMatrix MuonTransientTrackingRecHit::parametersError() const {
0049   AlgebraicSymMatrix err = GenericTransientTrackingRecHit::parametersError();
0050   AlgebraicVector par = GenericTransientTrackingRecHit::parameters();
0051 
0052   const AlignmentPositionError* APE = det()->alignmentPositionError();
0053   if (APE != nullptr) {
0054     AlgebraicVector positions(2, 0);
0055     AlgebraicVector directions(2, 0);
0056 
0057     if (err.num_row() == 1) {
0058       positions[0] = 0.;
0059       positions[1] = 0.;
0060       directions[0] = 0.;
0061       directions[1] = 0.;
0062       LocalErrorExtended lape = ErrorFrameTransformer().transform46(APE->globalError(), positions, directions);
0063       err[0][0] += lape.cxx();
0064     } else if (err.num_row() == 2) {
0065       positions[0] = localPosition().x();
0066       positions[1] = 0.;
0067       directions[0] = 0.;
0068       directions[1] = 0.;
0069       LocalErrorExtended lape = ErrorFrameTransformer().transform46(APE->globalError(), positions, directions);
0070 
0071       AlgebraicSymMatrix lapeMatrix(2, 0);
0072       lapeMatrix[1][1] = lape.cxx();
0073       lapeMatrix[0][0] = lape.cphixphix();
0074       lapeMatrix[0][1] = lape.cphixx();
0075 
0076       if (err.num_row() != lapeMatrix.num_row())
0077         throw cms::Exception("MuonTransientTrackingRecHit::parametersError")
0078             << "Discrepancy between alignment error matrix and error matrix: APE " << lapeMatrix.num_row()
0079             << ", error matrix " << err.num_row() << std::endl;
0080 
0081       err += lapeMatrix;
0082     } else if (err.num_row() == 4) {
0083       positions[0] = par[2];
0084       positions[1] = par[3];
0085       directions[0] = par[0];
0086       directions[1] = par[1];
0087 
0088       LocalErrorExtended lape = ErrorFrameTransformer().transform46(APE->globalError(), positions, directions);
0089 
0090       AlgebraicSymMatrix lapeMatrix(4, 0);
0091       lapeMatrix[2][2] = lape.cxx();
0092       lapeMatrix[2][3] = lape.cyx();
0093       lapeMatrix[3][3] = lape.cyy();
0094       lapeMatrix[0][0] = lape.cphixphix();
0095       lapeMatrix[0][1] = lape.cphiyphix();
0096       lapeMatrix[1][1] = lape.cphiyphiy();
0097 
0098       lapeMatrix[0][2] = lape.cphixx();
0099       lapeMatrix[0][3] = lape.cphixy();
0100       lapeMatrix[1][3] = lape.cphiyy();
0101       lapeMatrix[1][2] = lape.cphiyx();
0102 
0103       if (err.num_row() != lapeMatrix.num_row())
0104         throw cms::Exception("MuonTransientTrackingRecHit::parametersError")
0105             << "Discrepancy between alignment error matrix and error matrix: APE " << lapeMatrix.num_row()
0106             << ", error matrix " << err.num_row() << std::endl;
0107 
0108       err += lapeMatrix;
0109     }
0110   }
0111   return err;
0112 }
0113 
0114 double MuonTransientTrackingRecHit::chi2() const {
0115   if (dynamic_cast<const RecSegment*>(hit()))
0116     return dynamic_cast<const RecSegment*>(hit())->chi2();
0117   else
0118     return 0.;
0119 }
0120 
0121 int MuonTransientTrackingRecHit::degreesOfFreedom() const {
0122   if (dynamic_cast<const RecSegment*>(hit()))
0123     return dynamic_cast<const RecSegment*>(hit())->degreesOfFreedom();
0124   else
0125     return 0;
0126 }
0127 
0128 bool MuonTransientTrackingRecHit::isDT() const { return (geographicalId().subdetId() == MuonSubdetId::DT); }
0129 
0130 bool MuonTransientTrackingRecHit::isCSC() const { return (geographicalId().subdetId() == MuonSubdetId::CSC); }
0131 
0132 bool MuonTransientTrackingRecHit::isGEM() const { return (geographicalId().subdetId() == MuonSubdetId::GEM); }
0133 
0134 bool MuonTransientTrackingRecHit::isME0() const { return (geographicalId().subdetId() == MuonSubdetId::ME0); }
0135 
0136 bool MuonTransientTrackingRecHit::isRPC() const { return (geographicalId().subdetId() == MuonSubdetId::RPC); }
0137 
0138 // FIXME, now it is "on-demand". I have to change it.
0139 // FIXME check on mono hit!
0140 TransientTrackingRecHit::ConstRecHitContainer MuonTransientTrackingRecHit::transientHits() const {
0141   ConstRecHitContainer theSubTransientRecHits;
0142 
0143   // the sub rec hit of this TransientRecHit
0144   std::vector<const TrackingRecHit*> ownRecHits = recHits();
0145 
0146   if (ownRecHits.empty()) {
0147     theSubTransientRecHits.push_back(TransientTrackingRecHit::RecHitPointer(clone()));
0148     return theSubTransientRecHits;
0149   }
0150 
0151   // the components of the geom det on which reside this rechit
0152   std::vector<const GeomDet*> geomDets = det()->components();
0153 
0154   if (isDT() && dimension() == 2 && ownRecHits.front()->dimension() == 1 &&
0155       (geomDets.size() == 3 || geomDets.size() == 2)) {  // it is a phi segment!!
0156 
0157     std::vector<const GeomDet*> subGeomDets;
0158 
0159     int sl = 1;
0160     for (std::vector<const GeomDet*>::const_iterator geoDet = geomDets.begin(); geoDet != geomDets.end(); ++geoDet) {
0161       if (sl != 3) {  // FIXME!! this maybe is not always true
0162         std::vector<const GeomDet*> tmp = (*geoDet)->components();
0163         std::copy(tmp.begin(), tmp.end(), back_inserter(subGeomDets));
0164       }
0165       ++sl;
0166     }
0167     geomDets.clear();
0168     geomDets = subGeomDets;
0169   }
0170 
0171   // Fill the GeomDet map
0172   std::map<DetId, const GeomDet*> gemDetMap;
0173 
0174   for (std::vector<const GeomDet*>::const_iterator subDet = geomDets.begin(); subDet != geomDets.end(); ++subDet)
0175     gemDetMap[(*subDet)->geographicalId()] = *subDet;
0176 
0177   std::map<DetId, const GeomDet*>::iterator gemDetMap_iter;
0178 
0179   // Loop in order to check the ids
0180   for (std::vector<const TrackingRecHit*>::const_iterator rechit = ownRecHits.begin(); rechit != ownRecHits.end();
0181        ++rechit) {
0182     gemDetMap_iter = gemDetMap.find((*rechit)->geographicalId());
0183 
0184     if (gemDetMap_iter != gemDetMap.end())
0185       theSubTransientRecHits.push_back(
0186           TransientTrackingRecHit::RecHitPointer(new MuonTransientTrackingRecHit(gemDetMap_iter->second, *rechit)));
0187     else if ((*rechit)->geographicalId() == det()->geographicalId())  // Phi in DT is on Chamber
0188       theSubTransientRecHits.push_back(
0189           TransientTrackingRecHit::RecHitPointer(new MuonTransientTrackingRecHit(det(), *rechit)));
0190   }
0191   return theSubTransientRecHits;
0192 }
0193 
0194 void MuonTransientTrackingRecHit::invalidateHit() {
0195   setType(bad);
0196   trackingRecHit_->setType(bad);
0197 
0198   if (isDT()) {
0199     if (dimension() > 1) {                             // MB4s have 2D, but formatted in 4D segments
0200       std::vector<TrackingRecHit*> seg2D = recHits();  // 4D --> 2D
0201       // load 1D hits (2D --> 1D)
0202       for (std::vector<TrackingRecHit*>::iterator it = seg2D.begin(); it != seg2D.end(); ++it) {
0203         std::vector<TrackingRecHit*> hits1D = (*it)->recHits();
0204         (*it)->setType(bad);
0205         for (std::vector<TrackingRecHit*>::iterator it2 = hits1D.begin(); it2 != hits1D.end(); ++it2)
0206           (*it2)->setType(bad);
0207       }
0208     }
0209   } else if (isCSC())
0210     if (dimension() == 4) {
0211       std::vector<TrackingRecHit*> hits = recHits();  // load 2D hits (4D --> 1D)
0212       for (std::vector<TrackingRecHit*>::iterator it = hits.begin(); it != hits.end(); ++it)
0213         (*it)->setType(bad);
0214     }
0215 }