expose Woodcock tracking data in G4HepEmTrackingManager

G4HepEm/G4HepEm/include/G4HepEmTrackingManager.hh

@@ -42,6 +42,17 @@ public:
   // Needed if the random engine was swapped after construction of the HepEm TM
   void RebindG4RandomEngine();
 
+  // Returns whether the region for the given region index is using woodcock tracking
+  G4bool IsWDTRegion(G4int regionId) const;
+
+  // returns the Woodcock tracking kinetic energy limit
+  G4double GetWDTKineticEnergyLimit() const;
+
+  // For a given region index with Woodcock tracking and root logical volume index, 
+  // this function returns the G4HepEm material cut couple index of that volume if it is indeed 
+  // a root logical volume of a Woodcock tracking region, -1 otherwise 
+  G4int GetWDTCoupleHepEmIndex(G4int regionId, G4int logicalVolumeId) const;
+
   // Returns the vector of e-/e+ G4HepEmNoProcess pointers used only to set a
   // creator and step limiter G4VProcess of the G4Step with an appropriate
   // name and EM process type.

G4HepEm/G4HepEm/include/G4HepEmWoodcockHelper.hh

@@ -37,7 +37,7 @@ public:
 
 
     void     SetKineticEnergyLimit(G4double val) { fWDTKineticEnergyLimit = val; }
-    G4double GetKineticEnergyLimit() { return fWDTKineticEnergyLimit; }
+    G4double GetKineticEnergyLimit() const { return fWDTKineticEnergyLimit; }
 
 
     // Checks if this step will be done in a WDT region with high enough kinetic energy.
@@ -55,6 +55,13 @@ public:
     // post step points and interaction can only happen at the post step point if any).
     G4bool KeepTracking(const struct G4HepEmData* theHepEmData, G4HepEmGammaTrack* theGammaTrack, G4Track& aTrack);
 
+    // Returns whether the region for the given region index is using woodcock tracking
+    G4bool IsWDTRegion(G4int regionId) const;
+
+    // For a given region index with Woodcock tracking and root logical volume index, 
+    // this function returns the G4HepEm material cut couple index of that volume if it is indeed 
+    // a root logical volume of a Woodcock tracking region, -1 otherwise 
+    G4int GetWDTCoupleHepEmIndex(G4int regionId, G4int logicalVolumeId) const;
 
 private:
 

G4HepEm/G4HepEm/src/G4HepEmTrackingManager.cc

@@ -157,6 +157,20 @@ void G4HepEmTrackingManager::RebindG4RandomEngine() {
 
 //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
 
+G4bool G4HepEmTrackingManager::IsWDTRegion(G4int regionId) const { 
+  return (fWDTHelper) ? fWDTHelper->IsWDTRegion(regionId) : false;
+}
+
+G4double G4HepEmTrackingManager::GetWDTKineticEnergyLimit() const {
+  return (fWDTHelper) ? fWDTHelper->GetKineticEnergyLimit() : 0.0;
+}
+
+G4int G4HepEmTrackingManager::GetWDTCoupleHepEmIndex(G4int regionId, G4int logicalVolumeId) const { 
+  return (fWDTHelper) ? fWDTHelper->GetWDTCoupleHepEmIndex(regionId, logicalVolumeId) : -1;
+}
+
+//....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo......
+
 void G4HepEmTrackingManager::BuildPhysicsTable(const G4ParticleDefinition &part) {
   if (&part == G4Electron::Definition()) {
     int particleID = 0;

G4HepEm/G4HepEm/src/G4HepEmWoodcockHelper.cc

@@ -297,6 +297,26 @@ G4bool G4HepEmWoodcockHelper::KeepTracking(const struct G4HepEmData* theHepEmDat
   return isWDTReachedBoundary;
 }
 
+G4bool G4HepEmWoodcockHelper::IsWDTRegion(G4int regionId) const {
+  auto itrRegion = fWDTData.find(regionId);
+  return itrRegion != fWDTData.end() && itrRegion->second;
+}
+
+G4int G4HepEmWoodcockHelper::GetWDTCoupleHepEmIndex(G4int regionId, G4int logicalVolumeId) const {
+  // check whether the provided region is a Woodcock tracking region
+  auto itrRegion = fWDTData.find(regionId);
+  if (itrRegion == fWDTData.end() || !itrRegion->second) {
+    return -1;
+  } 
+  // check whether the provided logicalVolumeId corresponds to an entry in the root logical volumes map
+  const auto& WDTmap = itrRegion->second->fWDTDataRegion;
+  auto itrRootVol = WDTmap.find(logicalVolumeId);
+  if (itrRootVol == WDTmap.end() || !itrRootVol->second) {
+    return -1;
+  }
+  return itrRootVol->second->fG4CoupleHepEmIndex;
+}
+
 
 void G4HepEmWoodcockHelper::ClearData() {
   // iterate over the `fWDTData` map