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File indexing completed on 2022-02-02 23:43:35 

0001 #include "L1Trigger/L1TMuonOverlapPhase1/interface/AngleConverterBase.h"
0002 #include "L1Trigger/L1TMuonOverlapPhase1/interface/Omtf/OMTFConfiguration.h"
0003 
0004 #include "DataFormats/CSCDigi/interface/CSCConstants.h"
0005 #include "L1Trigger/DTUtilities/interface/DTTrigGeom.h"
0006 
0007 #include "FWCore/Framework/interface/EventSetup.h"
0008 #include "Geometry/Records/interface/MuonGeometryRecord.h"
0009 #include "Geometry/CSCGeometry/interface/CSCGeometry.h"
0010 #include "Geometry/DTGeometry/interface/DTGeometry.h"
0011 #include "Geometry/RPCGeometry/interface/RPCGeometry.h"
0012 #include "DataFormats/CSCDigi/interface/CSCCorrelatedLCTDigi.h"
0013 #include "DataFormats/L1DTTrackFinder/interface/L1MuDTChambPhDigi.h"
0014 #include "DataFormats/L1DTTrackFinder/interface/L1MuDTChambThContainer.h"
0015 #include "DataFormats/RPCDigi/interface/RPCDigi.h"
0016 #include "FWCore/MessageLogger/interface/MessageLogger.h"
0017 
0018 #include <cmath>
0019 
0020 namespace {
0021   template <typename T>
0022   int sgn(T val) {
0023     return (T(0) < val) - (val < T(0));
0024   }
0025 
0026   int fixCscOffsetGeom(int offsetLoc) {
0027     // fix for CSC geo dependence from GlobalTag

0028 
0029     // dump of CSC offsets for MC global tag

0030     const std::vector<int> offCSC = {-154, -133, -17, -4,  4,   17,  133, 146, 154, 167, 283, 296, 304, 317,
0031                                      433,  446,  454, 467, 583, 596, 604, 617, 733, 746, 754, 767, 883, 904};
0032     auto gep = std::lower_bound(offCSC.begin(), offCSC.end(), offsetLoc);
0033     int fixOff = (gep != offCSC.end()) ? *gep : *(gep - 1);
0034     if (gep != offCSC.begin() && std::abs(*(gep - 1) - offsetLoc) < std::abs(fixOff - offsetLoc))
0035       fixOff = *(gep - 1);
0036     return fixOff;
0037   }
0038 
0039 }  // namespace

0040 
0041 AngleConverterBase::AngleConverterBase() : _geom_cache_id(0ULL) {}
0042 ///////////////////////////////////////

0043 ///////////////////////////////////////

0044 AngleConverterBase::~AngleConverterBase() {}
0045 ///////////////////////////////////////

0046 ///////////////////////////////////////

0047 void AngleConverterBase::checkAndUpdateGeometry(const edm::EventSetup& es,
0048                                                 const ProcConfigurationBase* config,
0049                                                 const MuonGeometryTokens& muonGeometryTokens) {
0050   if (muonGeometryRecordWatcher.check(es)) {
0051     _georpc = es.getHandle(muonGeometryTokens.rpcGeometryEsToken);
0052     _geocsc = es.getHandle(muonGeometryTokens.cscGeometryEsToken);
0053     _geodt = es.getHandle(muonGeometryTokens.dtGeometryEsToken);
0054   }
0055   this->config = config;
0056   nPhiBins = config->nPhiBins();
0057 }
0058 ///////////////////////////////////////

0059 ///////////////////////////////////////

0060 int AngleConverterBase::getProcessorPhi(int phiZero, l1t::tftype part, int dtScNum, int dtPhi) const {
0061   int dtPhiBins = 4096;
0062 
0063   double hsPhiPitch = 2 * M_PI / nPhiBins;  // width of phi Pitch, related to halfStrip at CSC station 2

0064 
0065   int sector = dtScNum + 1;  //NOTE: there is a inconsistency in DT sector numb. Thus +1 needed to get detector numb.

0066 
0067   double scale = 1. / dtPhiBins / hsPhiPitch;
0068   int scale_coeff = lround(scale * pow(2, 11));
0069 
0070   int ichamber = sector - 1;
0071   if (ichamber > 6)
0072     ichamber = ichamber - 12;
0073 
0074   int offsetGlobal = (int)nPhiBins * ichamber / 12;
0075 
0076   int phiConverted = floor(dtPhi * scale_coeff / pow(2, 11)) + offsetGlobal - phiZero;
0077 
0078   //LogTrace("l1tOmtfEventPrint")<<__FUNCTION__<<":"<<__LINE__<<" phiZero "<<phiZero<<" phiDT "<<phiDT<<" sector "<<sector<<" ichamber "<<ichamber<<" offsetGlobal "<<offsetGlobal<<" phi "<<phi<<" foldPhi(phi) "<<omtfConfig->foldPhi(phi)<<std::endl;

0079   return config->foldPhi(phiConverted);
0080 }
0081 ///////////////////////////////////////

0082 ///////////////////////////////////////

0083 int AngleConverterBase::getProcessorPhi(int phiZero,
0084                                         l1t::tftype part,
0085                                         const CSCDetId& csc,
0086                                         const CSCCorrelatedLCTDigi& digi) const {
0087   const double hsPhiPitch = 2 * M_PI / nPhiBins;
0088   //

0089   // get offset for each chamber.

0090   // FIXME: These parameters depends on processor and chamber only so may be precomputed and put in map

0091   //

0092 
0093   int halfStrip = digi.getStrip();  // returns halfStrip 0..159

0094 
0095   const CSCChamber* chamber = _geocsc->chamber(csc);
0096 
0097   //in the PhaseIITDRSpring19DR dataset (generated with CMSSW_10_6_1_patch2?), in case of the ME1/1 ring 4 (higher eta) the detId in the CSCCorrelatedLCTDigiCollection is ME1/1 ring 1 (instead ME1/1/4 as it was before),

0098   //and the digi.getStrip() is increased by 2*64 (i.e. number of half strips in the chamber roll)

0099   if (csc.station() == 1 && csc.ring() == 1 && halfStrip > 128) {
0100     CSCDetId cscME11 = CSCDetId(csc.endcap(), csc.station(), 4, csc.chamber());  //changing ring  to 4

0101     chamber = _geocsc->chamber(cscME11);
0102   }
0103 
0104   const CSCChamberSpecs* cspec = chamber->specs();
0105   const CSCLayer* layer = chamber->layer(3);
0106   int order = (layer->centerOfStrip(2).phi() - layer->centerOfStrip(1).phi() > 0) ? 1 : -1;
0107   double stripPhiPitch = cspec->stripPhiPitch();
0108   double scale = fabs(stripPhiPitch / hsPhiPitch / 2.);
0109   if (fabs(scale - 1.) < 0.0002)
0110     scale = 1.;
0111 
0112   double phiHalfStrip0 = layer->centerOfStrip(1).phi() - order * stripPhiPitch / 4.;
0113 
0114   int offsetLoc = lround((phiHalfStrip0) / hsPhiPitch - phiZero);
0115   offsetLoc = config->foldPhi(offsetLoc);
0116 
0117   if (csc.station() == 1 && csc.ring() == 1 && halfStrip > 128) {  //ME1/1/

0118                                                                    /*    if(cspec->nStrips() != 64)

0119       edm::LogImportant("l1tOmtfEventPrint") <<__FUNCTION__<<":"<<__LINE__<<" cspec->nStrips() != 64 in case of the ME1/1, phi of the muon stub will be not correct. chamber "

0120       <<csc<<" cspec->nStrips() "<<cspec->nStrips()<<std::endl;

0121       this checks has no sense - the ME1/1/ ring 4 has cspec->nStrips() = 48. but the offset of 128 half strips in the digi.getStrip() looks to be good*/
0122     halfStrip -= 128;
0123   }
0124 
0125   //FIXME: to be checked (only important for ME1/3) keep more bits for offset, truncate at the end

0126 
0127   int fixOff = offsetLoc;
0128   // a quick fix for towards geometry changes due to global tag.

0129   // in case of MC tag fixOff should be identical to offsetLoc

0130 
0131   if (config->getFixCscGeometryOffset())
0132     fixOff = fixCscOffsetGeom(offsetLoc);  //TODO does not work in when phiZero is always 0. Fix this

0133 
0134   int phi = fixOff + order * scale * halfStrip;
0135   //the phi conversion is done like above - and not simply converting the layer->centerOfStrip(halfStrip/2 +1).phi() - to mimic this what is done by the firmware,

0136   //where phi of the stub is calculated with use of the offset and scale provided by an register

0137 
0138   /*//debug

0139   auto localPoint = layer->toLocal(layer->centerOfStrip(halfStrip));

0140   LogTrace("l1tOmtfEventPrint") << __FUNCTION__ << ":" << 147 << " csc: " <<csc.rawId()<<" "<< csc<<" layer "<<layer->id()<<" "<<layer->id().rawId()

0141       << " halfStrip "<<halfStrip<<" phiGlobal " << layer->centerOfStrip(halfStrip).phi()<<" local phi "<<localPoint.phi()<<" x "<<localPoint.x()<<" y "<<localPoint.y() <<std::endl;

0142     */
0143 
0144   /*//debug

0145   auto radToDeg = [](double rad) { return (180. / M_PI * rad); };

0146   LogTrace("l1tOmtfEventPrint") <<__FUNCTION__<<":"<<__LINE__<<" "<<std::setw(16)<<csc<<" phiZero "<<phiZero<<" hs: "<<std::setw(3)<< halfStrip <<" phiHalfStrip0 "<<std::setw(10)<<radToDeg(phiHalfStrip0)<<" offset: " << offsetLoc

0147       <<" oder*scale: "<<std::setw(10)<< order*scale

0148        <<" phi: " <<phi<<" foldPhi(phi) "<<config->foldPhi(phi)<<" ("<<offsetLoc + order*scale*halfStrip<<")"<<" centerOfStrip "<<std::setw(10)<< radToDeg( layer->centerOfStrip(halfStrip/2 +1).phi() )

0149        <<" centerOfStrip/hsPhiPitch "<< ( (layer->centerOfStrip(halfStrip/2 + 1).phi() )/hsPhiPitch)<<"  hsPhiPitch "<<hsPhiPitch

0150        //<<" phiSpan.f "<<layer->geometry()->phiSpan().first<<" phiSpan.s "<<layer->geometry()->phiSpan().second

0151        <<" nStrips "<<cspec->nStrips()

0152        //<<" strip 1 "<<radToDeg( layer->centerOfStrip(1).phi() )<<" strip last "<<radToDeg( layer->centerOfStrip(cspec->nStrips()).phi() )

0153        << std::endl;*/
0154 
0155   return config->foldPhi(phi);
0156 }
0157 
0158 ///////////////////////////////////////

0159 ///////////////////////////////////////

0160 int AngleConverterBase::getProcessorPhi(
0161     int phiZero, l1t::tftype part, const RPCDetId& rollId, const unsigned int& digi1, const unsigned int& digi2) const {
0162   const double hsPhiPitch = 2 * M_PI / nPhiBins;
0163   const int dummy = nPhiBins;
0164   const RPCRoll* roll = _georpc->roll(rollId);
0165   if (!roll)
0166     return dummy;
0167 
0168   double stripPhi1 = (roll->toGlobal(roll->centreOfStrip((int)digi1))).phi();  // note [-pi,pi]

0169   double stripPhi2 = (roll->toGlobal(roll->centreOfStrip((int)digi2))).phi();  // note [-pi,pi]

0170 
0171   // the case when the two strips are on different sides of phi = pi

0172   if (std::signbit(stripPhi1) != std::signbit(stripPhi2) && abs(stripPhi1) > M_PI / 2.) {
0173     if (std::signbit(stripPhi1)) {  //stripPhi1 is negative

0174       stripPhi1 += 2 * M_PI;
0175     } else  //stripPhi2 is negative

0176       stripPhi2 += 2 * M_PI;
0177   }
0178   int halfStrip = lround(((stripPhi1 + stripPhi2) / 2.) / hsPhiPitch);
0179   halfStrip = config->foldPhi(halfStrip);  //only for the case when the two strips are on different sides of phi = pi

0180 
0181   LogTrace("l1tOmtfEventPrint") << __FUNCTION__ << ":" << 185 << " roll " << rollId.rawId() << " " << rollId
0182                                 << " cluster: firstStrip " << digi1 << " stripPhi1Global " << stripPhi1
0183                                 << " stripPhi1LocalPhi " << roll->centreOfStrip((int)digi1).x() << " y "
0184                                 << roll->centreOfStrip((int)digi1).y() << " lastStrip " << digi2 << " stripPhi2Global "
0185                                 << stripPhi2 << " stripPhi2LocalPhi x " << roll->centreOfStrip((int)digi2).x() << " y "
0186                                 << roll->centreOfStrip((int)digi2).y() << " halfStrip " << halfStrip << std::endl;
0187 
0188   return config->foldPhi(halfStrip - phiZero);
0189 }
0190 
0191 int AngleConverterBase::getProcessorPhi(unsigned int iProcessor,
0192                                         l1t::tftype part,
0193                                         const RPCDetId& rollId,
0194                                         const unsigned int& digi) const {
0195   const double hsPhiPitch = 2 * M_PI / nPhiBins;
0196   const int dummy = nPhiBins;
0197   int processor = iProcessor + 1;
0198   const RPCRoll* roll = _georpc->roll(rollId);
0199   if (!roll)
0200     return dummy;
0201 
0202   double phi15deg = M_PI / 3. * (processor - 1) + M_PI / 12.;
0203   // "0" is 15degree moved cyclically to each processor, note [0,2pi]

0204 
0205   double stripPhi = (roll->toGlobal(roll->centreOfStrip((int)digi))).phi();  // note [-pi,pi]

0206 
0207   // adjust [0,2pi] and [-pi,pi] to get deltaPhi difference properly

0208   switch (processor) {
0209     case 1:
0210       break;
0211     case 6: {
0212       phi15deg -= 2 * M_PI;
0213       break;
0214     }
0215     default: {
0216       if (stripPhi < 0)
0217         stripPhi += 2 * M_PI;
0218       break;
0219     }
0220   }
0221 
0222   // local angle in CSC halfStrip usnits

0223   int halfStrip = lround((stripPhi - phi15deg) / hsPhiPitch);
0224 
0225   return halfStrip;
0226 }
0227 ///////////////////////////////////////

0228 ///////////////////////////////////////

0229 EtaValue AngleConverterBase::getGlobalEtaDt(const DTChamberId& detId) const {
0230   Local2DPoint chamberMiddleLP(0, 0);
0231   GlobalPoint chamberMiddleGP = _geodt->chamber(detId)->toGlobal(chamberMiddleLP);
0232 
0233   const DTChamberId baseidNeigh(detId.wheel() + (detId.wheel() >= 0 ? -1 : +1), detId.station(), detId.sector());
0234   GlobalPoint chambNeighMiddleGP = _geodt->chamber(baseidNeigh)->toGlobal(chamberMiddleLP);
0235 
0236   EtaValue etaValue = {
0237       config->etaToHwEta(chamberMiddleGP.eta()),
0238       config->etaToHwEta(fabs(chamberMiddleGP.eta() - chambNeighMiddleGP.eta())) / 2,
0239       0,  //quality

0240       0,  //bx

0241       0   //timin

0242   };
0243 
0244   //LogTrace("l1tOmtfEventPrint")<<__FUNCTION__<<":"<<__LINE__<<" rawid "<<detId.rawId()<<" baseid "<<detId<<" chamberMiddleGP.eta() "<<chamberMiddleGP.eta()<<" eta "<<etaValue.eta<<" etaSigma "<<etaValue.etaSigma<<std::endl;

0245   return etaValue;
0246 }
0247 
0248 ///////////////////////////////////////

0249 ///////////////////////////////////////

0250 void AngleConverterBase::getGlobalEta(const L1MuDTChambThDigi& thetaDigi, std::vector<EtaValue>& etaSegments) const {
0251   const DTChamberId baseid(thetaDigi.whNum(), thetaDigi.stNum(), thetaDigi.scNum() + 1);
0252   DTTrigGeom trig_geom(_geodt->chamber(baseid), false);
0253 
0254   // super layer 2 is the theta superlayer in a DT chamber

0255   // station 4 does not have a theta super layer

0256   // the BTI index from the theta trigger is an OR of some BTI outputs

0257   // so, we choose the BTI that's in the middle of the group

0258   // as the BTI that we get theta from

0259   // TODO:::::>>> need to make sure this ordering doesn't flip under wheel sign

0260   const int NBTI_theta = trig_geom.nCell(2);
0261   for (unsigned int btiGroup = 0; btiGroup < 7; ++btiGroup) {
0262     if (thetaDigi.position(btiGroup)) {
0263       unsigned btiActual = btiGroup * NBTI_theta / 7 + NBTI_theta / 14 + 1;
0264       DTBtiId thetaBTI = DTBtiId(baseid, 2, btiActual);
0265       GlobalPoint theta_gp = trig_geom.CMSPosition(thetaBTI);
0266 
0267       EtaValue etaValue = {
0268           config->etaToHwEta(theta_gp.eta()),
0269           0,
0270           thetaDigi.quality(btiGroup),
0271           thetaDigi.bxNum(),
0272           0  //TODO what about sub-bx timing???

0273       };
0274       etaSegments.emplace_back(etaValue);
0275 
0276       //LogTrace("l1tOmtfEventPrint")<<__FUNCTION__<<":"<<__LINE__<<" bx "<<thetaDigi.bxNum()<<" baseid "<<baseid<<" btiGroup "<<btiGroup<<" quality "<<thetaDigi.quality(btiGroup)<<" theta_gp.eta() "<<theta_gp.eta()<<" eta "<<etaValue.eta<<" etaSigma "<<etaValue.etaSigma<<std::endl;

0277     }
0278   }
0279 }
0280 
0281 std::vector<EtaValue> AngleConverterBase::getGlobalEta(const L1MuDTChambThContainer* dtThDigis,
0282                                                        int bxFrom,
0283                                                        int bxTo) const {
0284   //LogTrace("l1tOmtfEventPrint")<<__FUNCTION__<<":"<<__LINE__<<" dtThDigis size "<<dtThDigis->getContainer()->size()<<std::endl;

0285 
0286   std::vector<EtaValue> etaSegments;
0287 
0288   for (auto& thetaDigi : (*(dtThDigis->getContainer()))) {
0289     if (thetaDigi.bxNum() >= bxFrom && thetaDigi.bxNum() <= bxTo) {
0290       getGlobalEta(thetaDigi, etaSegments);
0291     }
0292   }
0293   return etaSegments;
0294 }
0295 
0296 //just read from the drawing

0297 float AngleConverterBase::cscChamberEtaSize(const CSCDetId& detId) const {
0298   if (detId.station() == 1) {
0299     if (detId.ring() == 1)
0300       return (2.5 - 1.6) / 2.;
0301     ///ME1/1 lower eta (b?, eta < ~2.1), L1TkMuonBayes eta bins 6-11 - but getGlobalEtaCsc(const CSCDetId& detId) gives the midle of the full chamber, so here we put the size of the full chamber

0302     if (detId.ring() == 2)
0303       return (1.7 - 1.2) / 2.;
0304     if (detId.ring() == 3)
0305       return (1.12 - 0.9) / 2.;
0306     if (detId.ring() == 4)
0307       return (2.5 - 1.6) / 2.;  ///ME1/1 higher eta (a?, eta > ~2.1), L1TkMuonBayes eta bins 10-15

0308   } else if (detId.station() == 2) {
0309     if (detId.ring() == 1)
0310       return (2.5 - 1.6) / 2.;
0311     if (detId.ring() == 2)
0312       return (1.6 - 1.0) / 2.;
0313   } else if (detId.station() == 3) {
0314     if (detId.ring() == 1)
0315       return (2.5 - 1.7) / 2.;
0316     if (detId.ring() == 2)
0317       return (1.7 - 1.1) / 2.;
0318   } else if (detId.station() == 4) {
0319     if (detId.ring() == 1)
0320       return (2.45 - 1.8) / 2.;
0321     if (detId.ring() == 2)
0322       return (1.8 - 1.2) / 2.;
0323   }
0324   return 0;
0325 }
0326 
0327 EtaValue AngleConverterBase::getGlobalEta(const CSCDetId& detId, const CSCCorrelatedLCTDigi& aDigi) const {
0328   ///Code taken from GeometryTranslator.

0329   ///Will be replaced by direct CSC phi local to global scale

0330   ///transformation as used in FPGA implementation

0331 
0332   // alot of this is transcription and consolidation of the CSC

0333   // global phi calculation code

0334   // this works directly with the geometry

0335   // rather than using the old phi luts

0336 
0337   auto chamb = _geocsc->chamber(detId);
0338   auto layer_geom = chamb->layer(CSCConstants::KEY_ALCT_LAYER)->geometry();
0339   auto layer = chamb->layer(CSCConstants::KEY_ALCT_LAYER);
0340 
0341   const uint16_t keyWG = aDigi.getKeyWG();
0342 
0343   const LocalPoint lpWg = layer_geom->localCenterOfWireGroup(keyWG);
0344   const GlobalPoint gpWg = layer->surface().toGlobal(lpWg);
0345 
0346   EtaValue etaSegment = {
0347       config->etaToHwEta(gpWg.eta()),
0348       0,  //config->etaToHwEta(cscChamberEtaSize(id) ),

0349       0,
0350       aDigi.getBX(),
0351       0  //tming???

0352   };
0353 
0354   //LogTrace("l1tOmtfEventPrint")<<__FUNCTION__<<":"<<__LINE__<<" csc "<<detId<<" eta "<<gpWg.eta()<<" etaHw "<<etaSegment.eta<<" etaSigma "<<etaSegment.etaSigma<<std::endl;

0355   return etaSegment;
0356 }
0357 
0358 //TODO the CSC ME1/1 has strips divided in two parts: a and b, so this function in principle can include that,

0359 //then it should also receive the roll number as parameter, off course implementation should be different then

0360 EtaValue AngleConverterBase::getGlobalEtaCsc(const CSCDetId& detId) const {
0361   auto chamb = _geocsc->chamber(detId);
0362 
0363   Local2DPoint chamberMiddleLP(0, 0);
0364   GlobalPoint chamberMiddleGP = chamb->toGlobal(chamberMiddleLP);
0365 
0366   EtaValue etaValue = {
0367       config->etaToHwEta(chamberMiddleGP.eta()),
0368       config->etaToHwEta(cscChamberEtaSize(detId)),
0369       0,
0370       0,  //bx

0371       0   //timnig

0372   };
0373 
0374   //LogTrace("l1tOmtfEventPrint")<<__FUNCTION__<<":"<<__LINE__<<" rawid "<<detId.rawId()<<" detId "<<detId<<" chamberMiddleGP.eta() "<<chamberMiddleGP.eta()<<" eta "<<etaValue.eta<<" etaSigma "<<etaValue.etaSigma<<std::endl;

0375   return etaValue;
0376 }
0377 
0378 ///////////////////////////////////////

0379 ///////////////////////////////////////

0380 EtaValue AngleConverterBase::getGlobalEta(unsigned int rawid, const unsigned int& strip) const {
0381   const RPCDetId id(rawid);
0382 
0383   auto roll = _georpc->roll(id);
0384   const LocalPoint lp = roll->centreOfStrip((int)strip);
0385   const GlobalPoint gp = roll->toGlobal(lp);
0386 
0387   int neighbRoll = 1;  //neighbor roll in eta

0388   //roll->chamber()->nrolls() does not work

0389   if (id.region() == 0) {  //barel

0390     if (id.station() == 2 &&
0391         ((abs(id.ring()) == 2 && id.layer() == 2) || (abs(id.ring()) != 2 && id.layer() == 1))) {  //three-roll chamber

0392       if (id.roll() == 2)
0393         neighbRoll = 1;
0394       else {
0395         neighbRoll = 2;
0396       }
0397     } else  //two-roll chamber

0398       neighbRoll = (id.roll() == 1 ? 3 : 1);
0399   } else {  //endcap

0400     neighbRoll = id.roll() + (id.roll() == 1 ? +1 : -1);
0401   }
0402 
0403   const RPCDetId idNeigh =
0404       RPCDetId(id.region(), id.ring(), id.station(), id.sector(), id.layer(), id.subsector(), neighbRoll);
0405   //LogTrace("l1tOmtfEventPrint")<<__FUNCTION__<<":"<<__LINE__<<" rpc "<<id<<std::endl;

0406   //LogTrace("l1tOmtfEventPrint")<<__FUNCTION__<<":"<<__LINE__<<" rpc "<<idNeigh<<std::endl;

0407 
0408   auto rollNeigh = _georpc->roll(idNeigh);
0409   const LocalPoint lpNeigh = rollNeigh->centreOfStrip((int)strip);
0410   const GlobalPoint gpNeigh = rollNeigh->toGlobal(lpNeigh);
0411 
0412   EtaValue etaValue = {config->etaToHwEta(gp.eta()),
0413                        config->etaToHwEta(abs(gp.eta() - gpNeigh.eta())) /
0414                            2,  //half of the size of the strip in eta - not precise, but OK

0415                        0};
0416 
0417   //LogTrace("l1tOmtfEventPrint")<<__FUNCTION__<<":"<<__LINE__<<" rpc "<<id<<" eta "<<gp.eta()<<" etaHw "<<etaValue.eta<<" etaSigma "<<etaValue.etaSigma<<std::endl;

0418   return etaValue;
0419 }
0420 ///////////////////////////////////////

0421 ///////////////////////////////////////

0422 bool AngleConverterBase::isCSCCounterClockwise(const CSCLayer* layer) const {
0423   const int nStrips = layer->geometry()->numberOfStrips();
0424   const double phi1 = layer->centerOfStrip(1).phi();
0425   const double phiN = layer->centerOfStrip(nStrips).phi();
0426   return ((std::abs(phi1 - phiN) < M_PI && phi1 >= phiN) || (std::abs(phi1 - phiN) >= M_PI && phi1 < phiN));
0427 }
0428 ///////////////////////////////////////

0429 ///////////////////////////////////////

0430 const int AngleConverterBase::findBTIgroup(const L1MuDTChambPhDigi& aDigi, const L1MuDTChambThContainer* dtThDigis) {
0431   int bti_group = -1;
0432 
0433   const L1MuDTChambThDigi* theta_segm =
0434       dtThDigis->chThetaSegm(aDigi.whNum(), aDigi.stNum(), aDigi.scNum(), aDigi.bxNum());
0435   if (!theta_segm)
0436     return bti_group;
0437 
0438   for (unsigned int i = 0; i < 7; ++i) {
0439     if (theta_segm->position(i) && bti_group < 0)
0440       bti_group = i;
0441     ///If there are more than one theta digi we do not take is

0442     ///due to unresolved ambiguity. In this case we take eta of the

0443     ///middle of the chamber.

0444     else if (theta_segm->position(i) && bti_group > -1)
0445       return -1;
0446   }
0447 
0448   return bti_group;
0449 }
0450 ///////////////////////////////////////

0451 ///////////////////////////////////////
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