G4MSSteppingAction.cc

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// G4MSSteppingAction implementation
//
// Author: M.Asai, 5 May 2006
// --------------------------------------------------------------------
 
#include "G4MSSteppingAction.hh"
 
#include "G4LogicalVolume.hh"
#include "G4Material.hh"
#include "G4Region.hh"
#include "G4Step.hh"
#include "G4VPhysicalVolume.hh"
 
// --------------------------------------------------------------------
void G4MSSteppingAction::Initialize(G4bool rSens, G4Region* reg)
{
  regionSensitive = rSens;
  theRegion = reg;
  length = 0.;
  x0 = 0.;
  lambda = 0.;
}
 
// --------------------------------------------------------------------
void G4MSSteppingAction::UserSteppingAction(const G4Step* aStep)
{
  G4StepPoint* preStepPoint = aStep->GetPreStepPoint();
  G4Region* region = preStepPoint->GetPhysicalVolume()->GetLogicalVolume()->GetRegion();
 
  if (regionSensitive && (region != theRegion)) return;
 
  G4double stlen = aStep->GetStepLength();
  const G4Material* material = preStepPoint->GetMaterial();
  length += stlen;
  x0 += stlen / (material->GetRadlen());
  lambda += stlen / (material->GetNuclearInterLength());
}