Import Geant4 6.0.0 source tree

2016-06-09 10:41:53 +02:00
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+//
+// ********************************************************************
+// * DISCLAIMER                                                       *
+// *                                                                  *
+// * The following disclaimer summarizes all the specific disclaimers *
+// * of contributors to this software. The specific disclaimers,which *
+// * govern, are listed with their locations in:                      *
+// *   http://cern.ch/geant4/license                                  *
+// *                                                                  *
+// * Neither the authors of this software system, nor their employing *
+// * institutes,nor the agencies providing financial support for this *
+// * work  make  any representation or  warranty, express or implied, *
+// * regarding  this  software system or assume any liability for its *
+// * use.                                                             *
+// *                                                                  *
+// * This  code  implementation is the  intellectual property  of the *
+// * GEANT4 collaboration.                                            *
+// * By copying,  distributing  or modifying the Program (or any work *
+// * based  on  the Program)  you indicate  your  acceptance of  this *
+// * statement, and all its terms.                                    *
+// ********************************************************************
+//
+//
+// $Id: F01FieldSetup.cc,v 1.2 2003/12/01 15:48:49 japost Exp $
+// GEANT4 tag $Name: geant4-06-00 $
+//
+//   User Field setup class implementation.
+//
+
+#include "F01FieldSetup.hh"
+#include "F01FieldMessenger.hh"
+
+#include "G4MagneticField.hh"
+#include "G4UniformMagField.hh"
+#include "G4FieldManager.hh"
+#include "G4TransportationManager.hh"
+#include "G4Mag_UsualEqRhs.hh"
+#include "G4MagIntegratorStepper.hh"
+#include "G4ChordFinder.hh"
+
+#include "G4ExplicitEuler.hh"
+#include "G4ImplicitEuler.hh"
+#include "G4SimpleRunge.hh"
+#include "G4SimpleHeum.hh"
+#include "G4ClassicalRK4.hh"
+#include "G4HelixExplicitEuler.hh"
+#include "G4HelixImplicitEuler.hh"
+#include "G4HelixSimpleRunge.hh"
+#include "G4CashKarpRKF45.hh"
+#include "G4RKG3_Stepper.hh"
+
+//////////////////////////////////////////////////////////////////////////
+//
+//  Constructors:
+
+F01FieldSetup::F01FieldSetup(G4ThreeVector fieldVector)
+  : fChordFinder(0), fStepper(0)
+{
+  fMagneticField = new G4UniformMagField( fieldVector ); 
+    // G4ThreeVector(3.3*tesla, 0.0, 0.0 ));
+  InitialiseAll();
+}
+
+F01FieldSetup::F01FieldSetup()
+  : fChordFinder(0), fStepper(0)
+{
+  fMagneticField = new G4UniformMagField( G4ThreeVector(0.0, 0.0, 0.0 ) );
+  InitialiseAll();
+}
+
+void
+F01FieldSetup::InitialiseAll()
+{
+  fFieldMessenger = new F01FieldMessenger(this) ;  
+ 
+  fEquation = new G4Mag_UsualEqRhs(fMagneticField); 
+ 
+  fMinStep     = 1.0*mm ; // minimal step of 1 mm is default
+
+  fStepperType = 4 ;      // ClassicalRK4 is default stepper
+
+  fFieldManager = G4TransportationManager::GetTransportationManager()
+                                         ->GetFieldManager();
+  CreateStepperAndChordFinder();
+}
+
+////////////////////////////////////////////////////////////////////////////////
+
+F01FieldSetup::~F01FieldSetup()
+{
+  // GetGlobalFieldManager()->SetDetectorField(0);
+
+  if(fMagneticField) delete fMagneticField;
+  if(fChordFinder)   delete fChordFinder;
+  if(fStepper)       delete fStepper;
+}
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Update field
+//
+
+void F01FieldSetup::CreateStepperAndChordFinder()
+{
+  SetStepper();
+  G4cout<<"The minimal step is equal to "<<fMinStep/mm<<" mm"<<G4endl ;
+
+  fFieldManager->SetDetectorField(fMagneticField );
+
+  if(fChordFinder) delete fChordFinder;
+
+  fChordFinder = new G4ChordFinder( fMagneticField, fMinStep,fStepper);
+
+  fFieldManager->SetChordFinder( fChordFinder );
+
+  return;
+}
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Set stepper according to the stepper type
+//
+
+void F01FieldSetup::SetStepper()
+{
+  if(fStepper) delete fStepper;
+
+  switch ( fStepperType ) 
+  {
+    case 0:  
+      fStepper = new G4ExplicitEuler( fEquation ); 
+      G4cout<<"G4ExplicitEuler is calledS"<<G4endl;     
+      break;
+    case 1:  
+      fStepper = new G4ImplicitEuler( fEquation );      
+      G4cout<<"G4ImplicitEuler is called"<<G4endl;     
+      break;
+    case 2:  
+      fStepper = new G4SimpleRunge( fEquation );        
+      G4cout<<"G4SimpleRunge is called"<<G4endl;     
+      break;
+    case 3:  
+      fStepper = new G4SimpleHeum( fEquation );         
+      G4cout<<"G4SimpleHeum is called"<<G4endl;     
+      break;
+    case 4:  
+      fStepper = new G4ClassicalRK4( fEquation );       
+      G4cout<<"G4ClassicalRK4 (default) is called"<<G4endl;     
+      break;
+    case 5:  
+      fStepper = new G4HelixExplicitEuler( fEquation ); 
+      G4cout<<"G4HelixExplicitEuler is called"<<G4endl;     
+      break;
+    case 6:  
+      fStepper = new G4HelixImplicitEuler( fEquation ); 
+      G4cout<<"G4HelixImplicitEuler is called"<<G4endl;     
+      break;
+    case 7:  
+      fStepper = new G4HelixSimpleRunge( fEquation );   
+      G4cout<<"G4HelixSimpleRunge is called"<<G4endl;     
+      break;
+    case 8:  
+      fStepper = new G4CashKarpRKF45( fEquation );      
+      G4cout<<"G4CashKarpRKF45 is called"<<G4endl;     
+      break;
+    case 9:  
+      fStepper = new G4RKG3_Stepper( fEquation );       
+      G4cout<<"G4RKG3_Stepper is called"<<G4endl;     
+      break;
+    default: fStepper = 0;
+  }
+  return; 
+}
+
+/////////////////////////////////////////////////////////////////////////////
+//
+// Set the value of the Global Field to fieldValue along Z
+//
+
+void F01FieldSetup::SetFieldValue(G4double fieldValue)
+{
+  if(fMagneticField) delete fMagneticField;
+  fMagneticField = new  G4UniformMagField(G4ThreeVector(0,0,fieldValue));
+  //  CreateStepperAndChordFinder();
+}
+
+///////////////////////////////////////////////////////////////////////////////
+//
+// Set the value of the Global Field
+//
+
+void F01FieldSetup::SetFieldValue(G4ThreeVector fieldVector)
+{
+  if(fMagneticField) delete fMagneticField;
+    
+  if(fieldVector != G4ThreeVector(0.,0.,0.))
+  { 
+    fMagneticField = new  G4UniformMagField(fieldVector);
+    // CreateStepperAndChordFinder();
+  }
+  else 
+  {
+    // If the new field's value is Zero, signal it as below
+    //   so that it is not used for propagation.
+    fMagneticField = 0;
+  }
+
+  //  Set this as the field of the global Field Manager
+  G4FieldManager* fieldMgr= GetGlobalFieldManager();
+
+  fieldMgr->SetDetectorField(fMagneticField);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+//
+//  Utility method
+
+G4FieldManager*  F01FieldSetup::GetGlobalFieldManager()
+{
+  return G4TransportationManager::GetTransportationManager()
+	                        ->GetFieldManager();
+}