Inheritance diagram for t0::DirectHitParticleAssns:

Classes
struct	TrackIDEinfo

Public Member Functions
	DirectHitParticleAssns (fhicl::ParameterSet const &pset)
	Constructor. More...

void	reconfigure (fhicl::ParameterSet const &pset) override

void	CreateHitParticleAssociations (art::Event &, HitParticleAssociations *) override
	This rebuilds the internal maps. More...

Private Attributes
std::vector< art::InputTag >	fHitModuleLabelVec

art::InputTag	fMCParticleModuleLabel

std::unordered_map< int, TrackIDEinfo >	fTrkIDECollector

Detailed Description

Definition at line 36 of file DirectHitParticleAssns_tool.cc.

Constructor & Destructor Documentation

t0::DirectHitParticleAssns::DirectHitParticleAssns ( fhicl::ParameterSet const & pset )

explicit

Constructor.

Parameters

pset	Constructor.

Arguments:

pset - Fcl parameters.

Definition at line 71 of file DirectHitParticleAssns_tool.cc.

References reconfigure().

   {
     reconfigure(pset);
 
     // Report.
     mf::LogInfo("DirectHitParticleAssns") << "Configured\n";
   }

Member Function Documentation

void t0::DirectHitParticleAssns::CreateHitParticleAssociations	(	art::Event &	evt,
		HitParticleAssociations *	hitPartAssns
	)

overridevirtual

This rebuilds the internal maps.

Rebuild method -> rebuild the basic maps to get truth information

Arguments:

event - the art event used to extract all information

Implements t0::IHitParticleAssociations.

Definition at line 99 of file DirectHitParticleAssns_tool.cc.

References util::abs(), art::Assns< L, R, D >::addSingle(), DEFINE_ART_CLASS_TOOL, anab::BackTrackerHitMatchingData::energy, fHitModuleLabelVec, fMCParticleModuleLabel, fTrkIDECollector, art::ProductRetriever::getByLabel(), art::ProductRetriever::getValidHandle(), anab::BackTrackerHitMatchingData::ideFraction, anab::BackTrackerHitMatchingData::ideNFraction, anab::BackTrackerHitMatchingData::isMaxIDE, anab::BackTrackerHitMatchingData::isMaxIDEN, art::Handle< T >::isValid(), and anab::BackTrackerHitMatchingData::numElectrons.

   {
     // This function handles the "direct" creation of hit<-->MCParticle associations through use of the BackTracker
     //
     auto mcpartHandle = evt.getValidHandle<std::vector<simb::MCParticle>>(fMCParticleModuleLabel);
 
     // Access art services...
     art::ServiceHandle<cheat::BackTrackerService const> btService;
     art::ServiceHandle<cheat::ParticleInventoryService const> piService;
 
     auto const clockData = art::ServiceHandle<detinfo::DetectorClocksService const>()->DataFor(evt);
 
     // Loop over input hit producer labels
     for (const auto& inputTag : fHitModuleLabelVec) {
       art::Handle<std::vector<recob::Hit>> hitListHandle;
       evt.getByLabel(inputTag, hitListHandle);
 
       if (!hitListHandle.isValid()) {
         mf::LogInfo("DirectHitParticleAssns")
           << "InputTag not associating to valid hit collection, tag: " << inputTag << "\n";
         continue;
       }
 
       anab::BackTrackerHitMatchingData bthmd;
       std::unordered_map<int, int>
         trkid_lookup; //indexed by geant4trkid, delivers MC particle location
 
       auto const& hitList(*hitListHandle);
       auto const& mcpartList(*mcpartHandle);
 
       for (size_t i_h = 0; i_h < hitList.size(); ++i_h) {
         art::Ptr<recob::Hit> hitPtr(hitListHandle, i_h);
 
         auto trkide_list = btService->HitToTrackIDEs(clockData, hitPtr);
 
         double maxe(-1.);
         double tote(0.);
         int maxtrkid(-1);
         double maxn(-1.);
         double totn(0.);
         int maxntrkid(-1);
 
         fTrkIDECollector.clear();
 
         //for(auto const& t : trkide_list){
         for (size_t i_t = 0; i_t < trkide_list.size(); ++i_t) {
           auto const& t(trkide_list[i_t]);
           fTrkIDECollector[t.trackID].E += t.energy;
           tote += t.energy;
           if (fTrkIDECollector[t.trackID].E > maxe) {
             maxe = fTrkIDECollector[t.trackID].E;
             maxtrkid = t.trackID;
           }
           fTrkIDECollector[t.trackID].NumElectrons += t.numElectrons;
           totn += t.numElectrons;
           if (fTrkIDECollector[t.trackID].NumElectrons > maxn) {
             maxn = fTrkIDECollector[t.trackID].NumElectrons;
             maxntrkid = t.trackID;
           }
 
           //if not found, find mc particle...
           if (trkid_lookup.find(t.trackID) == trkid_lookup.end()) {
             size_t i_p = 0;
             while (i_p < mcpartList.size()) {
               if (mcpartList[i_p].TrackId() == abs(t.trackID)) {
                 trkid_lookup[t.trackID] = (int)i_p;
                 break;
               }
               ++i_p;
             }
             if (i_p == mcpartList.size()) trkid_lookup[t.trackID] = -1;
           }
         }
         //end loop on TrackIDs
 
         //now find the mcparticle and loop back through ...
         for (auto const& t : fTrkIDECollector) {
           int mcpart_i = trkid_lookup[t.first];
           if (mcpart_i == -1) continue; //no mcparticle here
           art::Ptr<simb::MCParticle> mcpartPtr(mcpartHandle, mcpart_i);
           bthmd.ideFraction = t.second.E / tote;
           bthmd.isMaxIDE = (t.first == maxtrkid);
           bthmd.ideNFraction = t.second.NumElectrons / totn;
           bthmd.isMaxIDEN = (t.first == maxntrkid);
           bthmd.energy = t.second.E;
           bthmd.numElectrons = t.second.NumElectrons;
           hitPartAssns->addSingle(mcpartPtr, hitPtr, bthmd);
         }
 
       } //end loop on hits
     }   // end loop on producers
 
     return;
   }

void t0::DirectHitParticleAssns::reconfigure ( fhicl::ParameterSet const & pset )

overridevirtual

Reconfigure method.

Arguments:

pset - Fcl parameter set.

Implements t0::IHitParticleAssociations.

Definition at line 86 of file DirectHitParticleAssns_tool.cc.

References fHitModuleLabelVec, fMCParticleModuleLabel, and fhicl::ParameterSet::get().

Referenced by DirectHitParticleAssns().

   {
     fMCParticleModuleLabel = pset.get<art::InputTag>("MCParticleLabel");
     fHitModuleLabelVec = pset.get<std::vector<art::InputTag>>("HitModuleLabelVec");
   }