Import Geant4 9.0.0 source tree

2016-06-09 15:16:48 +02:00
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+//
+// ********************************************************************
+// * License and Disclaimer                                           *
+// *                                                                  *
+// * The  Geant4 software  is  copyright of the Copyright Holders  of *
+// * the Geant4 Collaboration.  It is provided  under  the terms  and *
+// * conditions of the Geant4 Software License,  included in the file *
+// * LICENSE and available at  http://cern.ch/geant4/license .  These *
+// * include a list of copyright holders.                             *
+// *                                                                  *
+// * 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.  Please see the license in the file  LICENSE  and URL above *
+// * for the full disclaimer and the limitation of liability.         *
+// *                                                                  *
+// * This  code  implementation is the result of  the  scientific and *
+// * technical work of the GEANT4 collaboration.                      *
+// * By using,  copying,  modifying or  distributing the software (or *
+// * any work based  on the software)  you  agree  to acknowledge its *
+// * use  in  resulting  scientific  publications,  and indicate your *
+// * acceptance of all terms of the Geant4 Software license.          *
+// ********************************************************************
+//
+//
+// $Id: G4ErrorPropagator.hh,v 1.3 2007/05/29 14:41:35 gcosmo Exp $
+// GEANT4 tag $Name: geant4-09-00 $
+//
+//
+// Class Description:
+//
+//  Manages the propagation of tracks. Creates a G4Track, asks to
+//  propagate it and takes also care to propagate the errors.
+//  Stops the track when GEANT4 stops it or a G4ErrorTarget is reached.
+
+// History:
+// - Created:   P. Arce
+// --------------------------------------------------------------------
+
+#ifndef G4ErrorPropagator_hh
+#define G4ErrorPropagator_hh
+
+#include "globals.hh"
+#include "G4ErrorPropagatorData.hh"
+#include "G4SteppingManager.hh"
+
+class G4eErrorMatrix;
+class G4Track;
+class G4ErrorTrajState;
+class G4ErrorFreeTrajState;
+class G4ErrorTarget;
+#include "globals.hh"
+
+class G4ErrorPropagator 
+{
+ public:  // with description
+
+  G4ErrorPropagator();
+  ~G4ErrorPropagator(){}
+
+  G4Track* InitG4Track( G4ErrorTrajState& initialTS );
+    // Creates a G4Track from a G4ErrorTrajState
+
+  G4int Propagate( G4ErrorTrajState* currentTS,
+                   const G4ErrorTarget* target,
+                   G4ErrorMode mode = G4ErrorMode_PropForwards);
+    // Steers the GEANT4 propagation of a track:
+    // the particle will be extrapolated until the Target is reached.
+    // The final G4Track parameters will be passed to theFinalTrajState
+
+  G4int PropagateOneStep( G4ErrorTrajState* currentTS );
+    // Propagates a G4Track by one step, and then returns control to the user
+
+  G4int MakeOneStep( G4ErrorFreeTrajState* currentTS_FREE );
+    // Advance one step
+
+  G4ErrorFreeTrajState* InitFreeTrajState( G4ErrorTrajState* currentTS );
+    // Creates theCurrentTS_FREE (transforms the user G4ErrorSurfaceTrajState
+    // or copies the G4ErrorFreeTrajState)
+
+  void GetFinalTrajState( G4ErrorTrajState* currentTS, G4ErrorFreeTrajState* currentTS_FREE, const G4ErrorTarget* target );
+    // After steps are done, convert the G4ErrorFreeTrajState used for error
+    // propagation to the class of origin (G4ErrorFreeTrajState or
+    // G4eTrajStatOnSurface)
+
+  void InvokePreUserTrackingAction( G4Track* fpTrack );
+    // Invoke the G4UserTrackingAction::PreUserTrackingAction
+  void InvokePostUserTrackingAction( G4Track* fpTrack );
+    // Invoke the G4UserTrackingAction::PostUserTrackingAction
+
+  G4bool CheckIfLastStep( G4Track* aTrack );
+    // Check if it is the last step for error propagation:
+    //  - G4ErrorState is G4ErrorState_StoppedAtTarget
+    //  - Track is OutOfWorld
+    //  - G4TrackStatus is fStopAndKill
+
+  // Get and Set methods 
+
+  const G4ErrorTrajState* GetInitialTrajState() const
+    { return theInitialTrajState; }
+
+  G4double GetStepLength() const
+    { return theStepLength; }
+
+  void SetStepLength( const G4double sl )
+    { theStepLength = sl; }
+
+  void SetStepN( const G4int sn )
+    { theStepN = sn; }
+
+ private:
+
+  G4int MakeSteps( G4ErrorFreeTrajState* currentTS_FREE );
+    // Advance steps until target is reached
+
+ private:
+
+  G4double theStepLength;
+
+  G4ErrorTrajState* theInitialTrajState;
+  G4ErrorTrajState* theFinalTrajState;
+
+  G4int theStepN;
+
+  G4Track* theG4Track;
+
+  G4SteppingManager* fpSteppingManager;
+
+  G4int verbose;
+
+  G4bool thePropIsInitialized;
+
+};
+
+#endif