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File indexing completed on 2021-02-14 23:30:48

0001 #include <RecoMuon/DetLayers/src/MuonGEMDetLayerGeometryBuilder.h>
0002 
0003 #include <DataFormats/MuonDetId/interface/GEMDetId.h>
0004 #include <Geometry/CommonDetUnit/interface/GeomDet.h>
0005 #include <RecoMuon/DetLayers/interface/MuRingForwardDoubleLayer.h>
0006 #include <RecoMuon/DetLayers/interface/MuRodBarrelLayer.h>
0007 #include <RecoMuon/DetLayers/interface/MuDetRing.h>
0008 #include <RecoMuon/DetLayers/interface/MuDetRod.h>
0009 
0010 #include <Utilities/General/interface/precomputed_value_sort.h>
0011 #include <Geometry/CommonDetUnit/interface/DetSorting.h>
0012 
0013 #include <FWCore/MessageLogger/interface/MessageLogger.h>
0014 
0015 #include <iostream>
0016 
0017 using namespace std;
0018 
0019 MuonGEMDetLayerGeometryBuilder::~MuonGEMDetLayerGeometryBuilder() {}
0020 
0021 // Builds the forward (first) and backward (second) layers
0022 // Builds etaPartitions (for rechits)
0023 pair<vector<DetLayer*>, vector<DetLayer*> > MuonGEMDetLayerGeometryBuilder::buildEndcapLayers(const GEMGeometry& geo) {
0024   vector<DetLayer*> endcapLayers[2];
0025 
0026   const std::string metname = "Muon|RecoMuon|RecoMuonDetLayers|MuonGEMDetLayerGeometryBuilder";
0027   for (auto st : geo.stations()) {
0028     const int maxLayerId = (st->station() == GEMDetId::minStationId0) ? GEMDetId::maxLayerId0 : GEMDetId::maxLayerId;
0029     for (int layer = GEMDetId::minLayerId + 1; layer <= maxLayerId; ++layer) {
0030       ForwardDetLayer* forwardLayer = nullptr;
0031       vector<const ForwardDetRing*> frontRings, backRings;
0032 
0033       for (int roll = GEMDetId::minRollId + 1; roll <= GEMDetId::maxRollId; ++roll) {
0034         vector<const GeomDet*> frontDets, backDets;
0035 
0036         for (auto sc : st->superChambers()) {
0037           auto ch = sc->chamber(layer);
0038           if (ch == nullptr)
0039             continue;
0040 
0041           auto etaP = ch->etaPartition(roll);
0042           if (etaP == nullptr)
0043             continue;
0044 
0045           bool isInFront = isFront(etaP->id());
0046           if (isInFront) {
0047             frontDets.push_back(etaP);
0048           } else {
0049             backDets.push_back(etaP);
0050           }
0051         }
0052 
0053         if (!frontDets.empty()) {
0054           precomputed_value_sort(frontDets.begin(), frontDets.end(), geomsort::DetPhi());
0055           frontRings.push_back(new MuDetRing(frontDets));
0056           LogTrace(metname) << "New front ring with " << frontDets.size()
0057                             << " chambers at z=" << frontRings.back()->position().z();
0058         }
0059         if (!backDets.empty()) {
0060           precomputed_value_sort(backDets.begin(), backDets.end(), geomsort::DetPhi());
0061           backRings.push_back(new MuDetRing(backDets));
0062           LogTrace(metname) << "New back ring with " << backDets.size()
0063                             << " chambers at z=" << backRings.back()->position().z();
0064         }
0065       }
0066 
0067       if (!frontRings.empty()) {
0068         if (st->station() == GEMDetId::minStationId0)
0069           forwardLayer = new MuRingForwardLayer(frontRings);
0070         else if (!backRings.empty())
0071           forwardLayer = new MuRingForwardDoubleLayer(frontRings, backRings);
0072       }
0073 
0074       if (forwardLayer != nullptr) {
0075         LogTrace(metname) << "New MuRingForwardLayer with " << frontRings.size() << " and " << backRings.size()
0076                           << " rings, at Z " << forwardLayer->position().z()
0077                           << " R1: " << forwardLayer->specificSurface().innerRadius()
0078                           << " R2: " << forwardLayer->specificSurface().outerRadius();
0079 
0080         int iendcap = (st->region() == 1) ? 0 : 1;
0081         endcapLayers[iendcap].push_back(forwardLayer);
0082       }
0083     }
0084   }
0085 
0086   pair<vector<DetLayer*>, vector<DetLayer*> > res_pair(endcapLayers[0], endcapLayers[1]);
0087   return res_pair;
0088 }
0089 
0090 bool MuonGEMDetLayerGeometryBuilder::isFront(const GEMDetId& gemId) {
0091   // ME0s do not currently have an arrangement of which are front and which are back, going to always return true
0092   if (gemId.station() == GEMDetId::minStationId0)
0093     return true;
0094 
0095   return (gemId.chamber() % 2 == 0);
0096 }
0097 
0098 MuDetRing* MuonGEMDetLayerGeometryBuilder::makeDetRing(vector<const GeomDet*>& geomDets) {
0099   const std::string metname = "Muon|RecoMuon|RecoMuonDetLayers|MuonGEMDetLayerGeometryBuilder";
0100 
0101   precomputed_value_sort(geomDets.begin(), geomDets.end(), geomsort::DetPhi());
0102   MuDetRing* result = new MuDetRing(geomDets);
0103   LogTrace(metname) << "New MuDetRing with " << geomDets.size() << " chambers at z=" << result->position().z()
0104                     << " R1: " << result->specificSurface().innerRadius()
0105                     << " R2: " << result->specificSurface().outerRadius();
0106   return result;
0107 }