Import Geant4 0.0.0 source tree

2016-06-01 15:25:35 +02:00
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+// This code implementation is the intellectual property of
+// the RD44 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: ExN02MagneticField.cc,v 1.2 1998/12/04 20:25:22 japost Exp $
+// GEANT4 tag $Name: geant4-00 $
+//
+//  
+//   User Field class implementation.
+//
+#include "ExN02MagneticField.hh"
+#include "G4FieldManager.hh"
+
+//  Constructors:
+
+ExN02MagneticField::ExN02MagneticField()
+  : G4UniformMagField(G4ThreeVector())
+{
+  GetGlobalFieldManager()->CreateChordFinder(this);
+}
+
+ExN02MagneticField::ExN02MagneticField(G4ThreeVector fieldVector)
+  : G4UniformMagField(fieldVector)
+{    
+  GetGlobalFieldManager()->CreateChordFinder(this);
+}
+
+// Set the value of the Global Field to fieldValue along Z
+//
+void ExN02MagneticField::SetFieldValue(G4double fieldValue)
+{
+   G4UniformMagField::SetFieldValue(G4ThreeVector(0,0,fieldValue));
+}
+
+// Set the value of the Global Field
+//
+void ExN02MagneticField::SetFieldValue(G4ThreeVector fieldVector)
+{
+  // Find the Field Manager for the global field
+  G4FieldManager* fieldMgr= GetGlobalFieldManager();
+    
+  if(fieldVector!=G4ThreeVector(0.,0.,0.))
+  { 
+    G4UniformMagField::SetFieldValue(fieldVector);
+    fieldMgr->SetDetectorField(this);
+  } else {
+    // If the new field's value is Zero, then it is best to
+    //  insure that it is not used for propagation.
+    G4MagneticField* magField = NULL;
+    fieldMgr->SetDetectorField(magField);
+  }
+}
+
+ExN02MagneticField::~ExN02MagneticField()
+{
+  // GetGlobalFieldManager()->SetDetectorField(0);
+}
+
+//  Utility method
+#include "G4TransportationManager.hh"
+
+G4FieldManager*  ExN02MagneticField::GetGlobalFieldManager()
+{
+  return G4TransportationManager::GetTransportationManager()
+	     ->GetFieldManager();
+}
+