Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/examples/advanced/medical_linac/src/StepMax.cc

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
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  6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.                             *
 10 // *                                                                  *
 11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                                                  *
 18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // ********************************************************************
 25 //
 26 // Code developed by
 27 // Silvia Pozzi (1), silvia.pozzi@iss.it
 28 // Barbara Caccia (1), barbara.caccia@iss.it
 29 // Carlo Mancini Terracciano (2), carlo.mancini.terracciano@roma1.infn.it
 30 // (1) Istituto Superiore di Sanita' and INFN Roma, Italy
 31 // (2) Univ. La Sapienza and INFN Roma, Italy
 32 
 33 #include <StepMax.hh>
 34 #include <StepMaxMessenger.hh>
 35 
 36 /////////////////////////////////////////////////////////////////////////////
 37 StepMax::StepMax(const G4String& processName)
 38  : G4VDiscreteProcess(processName),MaxChargedStep(DBL_MAX)
 39 {
 40   pMess = new StepMaxMessenger(this);
 41 }
 42  
 43 /////////////////////////////////////////////////////////////////////////////
 44 StepMax::~StepMax()
 45 { delete pMess; }
 46 
 47 /////////////////////////////////////////////////////////////////////////////
 48 G4bool StepMax::IsApplicable(const G4ParticleDefinition& particle)
 49 { 
 50   return (particle.GetPDGCharge() != 0.);
 51 }
 52 
 53 /////////////////////////////////////////////////////////////////////////////    
 54 void StepMax::SetMaxStep(G4double step) {MaxChargedStep = step;}
 55 
 56 /////////////////////////////////////////////////////////////////////////////
 57 G4double StepMax::PostStepGetPhysicalInteractionLength(const G4Track& aTrack,
 58                                                   G4double,
 59                                                   G4ForceCondition* condition )
 60 {
 61   // condition is set to "Not Forced"
 62   *condition = NotForced;
 63   
 64   G4double ProposedStep = DBL_MAX;
 65 
 66   if((MaxChargedStep > 0.) &&
 67      (aTrack.GetVolume() != 0) &&
 68      (aTrack.GetVolume()->GetName() == "DetectorPhys"))
 69      ProposedStep = MaxChargedStep;
 70 
 71   return ProposedStep;
 72 }
 73 
 74 /////////////////////////////////////////////////////////////////////////////
 75 G4VParticleChange* StepMax::PostStepDoIt(const G4Track& aTrack, const G4Step&)
 76 {
 77    // do nothing
 78    aParticleChange.Initialize(aTrack);
 79    return &aParticleChange;
 80 }
 81 
 82