B5/src/HodoscopeSD.cc

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0025 //
0026 /// \file HodoscopeSD.cc
0027 /// \brief Implementation of the B5::HodoscopeSD class
0028
0029 #include "HodoscopeSD.hh"
0030
0031 #include "HodoscopeHit.hh"
0032
0033 #include "G4AffineTransform.hh"
0034 #include "G4HCofThisEvent.hh"
0035 #include "G4SDManager.hh"
0036 #include "G4Step.hh"
0037 #include "G4StepPoint.hh"
0038 #include "G4VPhysicalVolume.hh"
0039 #include "G4VTouchable.hh"
0040
0041 namespace B5
0042 {
0043
0044 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0045
0046 HodoscopeSD::HodoscopeSD(G4String name) : G4VSensitiveDetector(name)
0047 {
0048   collectionName.insert("hodoscopeColl");
0049 }
0050
0051 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0052
0053 void HodoscopeSD::Initialize(G4HCofThisEvent* hce)
0054 {
0055   fHitsCollection = new HodoscopeHitsCollection(SensitiveDetectorName, collectionName[0]);
0056   if (fHCID < 0) {
0057     fHCID = G4SDManager::GetSDMpointer()->GetCollectionID(fHitsCollection);
0058   }
0059   hce->AddHitsCollection(fHCID, fHitsCollection);
0060 }
0061
0062 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0063
0064 G4bool HodoscopeSD::ProcessHits(G4Step* step, G4TouchableHistory*)
0065 {
0066   auto edep = step->GetTotalEnergyDeposit();
0067   if (edep == 0.) return true;
0068
0069   auto preStepPoint = step->GetPreStepPoint();
0070   auto touchable = preStepPoint->GetTouchable();
0071   auto copyNo = touchable->GetVolume()->GetCopyNo();
0072   auto hitTime = preStepPoint->GetGlobalTime();
0073
0074   // check if this finger already has a hit
0075   auto ix = -1;
0076   for (std::size_t i = 0; i < fHitsCollection->entries(); ++i) {
0077     if ((*fHitsCollection)[i]->GetID() == copyNo) {
0078       ix = i;
0079       break;
0080     }
0081   }
0082
0083   if (ix >= 0) {
0084     // if it has, then take the earlier time
0085     if ((*fHitsCollection)[ix]->GetTime() > hitTime) {
0086       (*fHitsCollection)[ix]->SetTime(hitTime);
0087     }
0088   }
0089   else {
0090     // if not, create a new hit and set it to the collection
0091     auto hit = new HodoscopeHit(copyNo, hitTime);
0092     auto physical = touchable->GetVolume();
0093     hit->SetLogV(physical->GetLogicalVolume());
0094     auto transform = touchable->GetHistory()->GetTopTransform();
0095     transform.Invert();
0096     hit->SetRot(transform.NetRotation());
0097     hit->SetPos(transform.NetTranslation());
0098     fHitsCollection->insert(hit);
0099   }
0100   return true;
0101 }
0102
0103 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
0104
0105 }  // namespace B5