G4MaterialScanner.cc

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//
// G4MaterialScanner implementation
//
// Author: M.Asai, May 2006
// --------------------------------------------------------------------
 
#include "G4MaterialScanner.hh"
 
#include "G4Event.hh"
#include "G4EventManager.hh"
#include "G4GeometryManager.hh"
#include "G4MSSteppingAction.hh"
#include "G4MatScanMessenger.hh"
#include "G4ProcessManager.hh"
#include "G4ProcessVector.hh"
#include "G4RayShooter.hh"
#include "G4Region.hh"
#include "G4RegionStore.hh"
#include "G4RunManagerKernel.hh"
#include "G4SDManager.hh"
#include "G4StateManager.hh"
#include "G4SystemOfUnits.hh"
#include "G4TransportationManager.hh"
 
// --------------------------------------------------------------------
G4MaterialScanner::G4MaterialScanner()
{
  theRayShooter   = new G4RayShooter();
  theMessenger    = new G4MatScanMessenger(this);
  theEventManager = G4EventManager::GetEventManager();
 
  eyePosition = G4ThreeVector(0., 0., 0.);
  thetaSpan   = 90. * deg;
  phiSpan     = 360. * deg;
}
 
// --------------------------------------------------------------------
G4MaterialScanner::~G4MaterialScanner()
{
  delete theRayShooter;
  delete theMatScannerSteppingAction;
  delete theMessenger;
}
 
// --------------------------------------------------------------------
void G4MaterialScanner::Scan()
{
  G4StateManager* theStateMan     = G4StateManager::GetStateManager();
  G4ApplicationState currentState = theStateMan->GetCurrentState();
  if(currentState != G4State_Idle)
  {
    G4cerr << "Illegal application state - Scan() ignored." << G4endl;
    return;
  }
 
  if(theMatScannerSteppingAction == nullptr)
  {
    theMatScannerSteppingAction = new G4MSSteppingAction();
  }
  StoreUserActions();
  DoScan();
  RestoreUserActions();
}
 
// --------------------------------------------------------------------
void G4MaterialScanner::StoreUserActions()
{
  theUserEventAction    = theEventManager->GetUserEventAction();
  theUserStackingAction = theEventManager->GetUserStackingAction();
  theUserTrackingAction = theEventManager->GetUserTrackingAction();
  theUserSteppingAction = theEventManager->GetUserSteppingAction();
 
  theEventManager->SetUserAction(theMatScannerEventAction);
  theEventManager->SetUserAction(theMatScannerStackingAction);
  theEventManager->SetUserAction(theMatScannerTrackingAction);
  theEventManager->SetUserAction(theMatScannerSteppingAction);
 
  G4SDManager* theSDMan = G4SDManager::GetSDMpointerIfExist();
  if(theSDMan != nullptr)
  {
    theSDMan->Activate("/", false);
  }
 
  G4GeometryManager* theGeomMan = G4GeometryManager::GetInstance();
  theGeomMan->OpenGeometry();
  theGeomMan->CloseGeometry(true);
}
 
// --------------------------------------------------------------------
void G4MaterialScanner::RestoreUserActions()
{
  theEventManager->SetUserAction(theUserEventAction);
  theEventManager->SetUserAction(theUserStackingAction);
  theEventManager->SetUserAction(theUserTrackingAction);
  theEventManager->SetUserAction(theUserSteppingAction);
 
  G4SDManager* theSDMan = G4SDManager::GetSDMpointerIfExist();
  if(theSDMan != nullptr)
  {
    theSDMan->Activate("/", true);
  }
}
 
// --------------------------------------------------------------------
void G4MaterialScanner::DoScan()
{
  // Confirm material table is updated
  G4RunManagerKernel::GetRunManagerKernel()->UpdateRegion();
 
 
  // Close geometry and set the application state
  G4GeometryManager* geomManager = G4GeometryManager::GetInstance();
  geomManager->OpenGeometry();
  geomManager->CloseGeometry(1, 0);
 
  G4ThreeVector center(0, 0, 0);
  G4Navigator* navigator = G4TransportationManager::GetTransportationManager()
                             ->GetNavigatorForTracking();
  navigator->LocateGlobalPointAndSetup(center, 0, false);
 
  G4StateManager* theStateMan = G4StateManager::GetStateManager();
  theStateMan->SetNewState(G4State_GeomClosed);
 
  // Event loop
  G4int iEvent = 0;
  for(G4int iTheta = 0; iTheta < nTheta; ++iTheta)
  {
    G4double theta = thetaMin;
    if(iTheta > 0)
      theta += G4double(iTheta) * thetaSpan / G4double(nTheta - 1);
    G4double aveLength = 0.;
    G4double aveX0     = 0.;
    G4double aveLambda = 0.;
    G4cout << G4endl;
    G4cout
      << "         Theta(deg)    Phi(deg)  Length(mm)          x0     lambda0"
      << G4endl;
    G4cout << G4endl;
    for(G4int iPhi = 0; iPhi < nPhi; ++iPhi)
    {
      G4Event* anEvent = new G4Event(iEvent++);
      G4double phi     = phiMin;
      if(iPhi > 0)
        phi += G4double(iPhi) * phiSpan / G4double(nPhi - 1);
      eyeDirection =
        G4ThreeVector(std::cos(theta) * std::cos(phi),
                      std::cos(theta) * std::sin(phi), std::sin(theta));
      theRayShooter->Shoot(anEvent, eyePosition, eyeDirection);
      theMatScannerSteppingAction->Initialize(regionSensitive, theRegion);
      theEventManager->ProcessOneEvent(anEvent);
      G4double length = theMatScannerSteppingAction->GetTotalStepLength();
      G4double x0     = theMatScannerSteppingAction->GetX0();
      G4double lambda = theMatScannerSteppingAction->GetLambda0();
 
      G4cout << "        " << std::setw(11) << theta / deg << " "
             << std::setw(11) << phi / deg << " " << std::setw(11)
             << length / mm << " " << std::setw(11) << x0 << " "
             << std::setw(11) << lambda << G4endl;
      aveLength += length / mm;
      aveX0 += x0;
      aveLambda += lambda;
    }
    if(nPhi > 1)
    {
      G4cout << G4endl;
      G4cout << " ave. for theta = " << std::setw(11) << theta / deg << " : "
             << std::setw(11) << aveLength / nPhi << " " << std::setw(11)
             << aveX0 / nPhi << " " << std::setw(11) << aveLambda / nPhi
             << G4endl;
    }
  }
 
  theStateMan->SetNewState(G4State_Idle);
  return;
}
 
// --------------------------------------------------------------------
G4bool G4MaterialScanner::SetRegionName(const G4String& val)
{
  G4Region* aRegion = G4RegionStore::GetInstance()->GetRegion(val);
  if(aRegion != nullptr)
  {
    theRegion  = aRegion;
    regionName = val;
    return true;
  }
  else
  {
    G4cerr << "Region <" << val << "> not found. Command ignored." << G4endl;
    G4cerr << "Defined regions are : " << G4endl;
    for(std::size_t i = 0; i < G4RegionStore::GetInstance()->size(); ++i)
    {
      G4cerr << " " << (*(G4RegionStore::GetInstance()))[i]->GetName();
    }
    G4cerr << G4endl;
    return false;
  }
}