Moved Tao's code to TaoLEMuSR.
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shiroka
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geant4/TaoLEMuSR/G4Modified/G4FieldManager.hh
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geant4/TaoLEMuSR/G4Modified/G4FieldManager.hh
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//
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// ********************************************************************
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// * DISCLAIMER *
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// * *
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// * The following disclaimer summarizes all the specific disclaimers *
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// * of contributors to this software. The specific disclaimers,which *
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// * govern, are listed with their locations in: *
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// * http://cern.ch/geant4/license *
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// * *
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// * Neither the authors of this software system, nor their employing *
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// * institutes,nor the agencies providing financial support for this *
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// * work make any representation or warranty, express or implied, *
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// * regarding this software system or assume any liability for its *
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// * use. *
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// * *
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// * This code implementation is the intellectual property of the *
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// * GEANT4 collaboration. *
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// * By copying, distributing or modifying the Program (or any work *
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// * based on the Program) you indicate your acceptance of this *
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// * statement, and all its terms. *
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// ********************************************************************
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//
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//
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// $Id: G4FieldManager.hh,v 1.13 2003/11/08 03:55:16 japost Exp $
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// GEANT4 tag $Name: geant4-06-00-patch-01 $
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//
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//
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// class G4FieldManager
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//
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// Class description:
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//
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// A class to manage (Store) a pointer to the Field subclass that
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// describes the field of a detector (magnetic, electric or other).
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// Also stores a reference to the chord finder.
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//
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// The G4FieldManager class exists to allow the user program to specify
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// the electric, magnetic and/or other field(s) of the detector.
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// (OR, in the future, of a part of it - planned to be a logical volume).
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// It also stores a pointer to the ChordFinder object that can do the
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// propagation in this field. All geometrical track "advancement"
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// in the field is handled by this ChordFinder object.
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//
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// G4FieldManager allows the other classes/object (of the MagneticField
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// & other class categories) to find out whether a detector field object
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// exists and what that object is.
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//
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// The Chord Finder must be created either by calling CreateChordFinder
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// for a Magnetic Field or by the user creating a a Chord Finder object
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// "manually" and setting this pointer.
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//
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// A default FieldManager is created by the singleton class
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// G4NavigatorForTracking and exists before main is called.
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// However a new one can be created and given to G4NavigatorForTracking.
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//
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// Our current design envisions that one Field manager is
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// valid for each region detector.
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// History:
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// - 10.03.97 John Apostolakis, design and implementation.
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// - Augsut 05 T.K.Paraïso add magcomponent l.138
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// -------------------------------------------------------------------
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#ifndef G4FIELDMANAGER_HH
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#define G4FIELDMANAGER_HH 1
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#include "globals.hh"
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class G4Field;
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class G4MagneticField;
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class G4ElectricField;
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class G4ChordFinder;
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class G4Track; // Forward reference for parameter configuration
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class G4FieldManager
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{
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public: // with description
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G4FieldManager(G4Field *detectorField=0,
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G4ChordFinder *pChordFinder=0,
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G4bool b=true ); // fieldChangesEnergy is taken from field
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// General constructor for any field.
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// -> Must be set with field and chordfinder for use.
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G4FieldManager(G4MagneticField *detectorMagneticField);
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// Creates ChordFinder
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// - assumes pure magnetic field (so Energy constant)
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virtual ~G4FieldManager();
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G4bool SetDetectorField(G4Field *detectorField);
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// TAO
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G4bool SetDetectorField(G4Field *detectorField, G4bool magcomponent);
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inline const G4Field* GetDetectorField() const;
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inline G4bool DoesFieldExist() const;
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// Set, get and check the field object
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void CreateChordFinder(G4MagneticField *detectorMagField);
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inline void SetChordFinder(G4ChordFinder *aChordFinder);
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inline G4ChordFinder* GetChordFinder();
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inline const G4ChordFinder* GetChordFinder() const;
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// Create, set or get the associated Chord Finder
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virtual void ConfigureForTrack( const G4Track * );
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// Setup the choice of the configurable parameters
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// relying on the current track's energy, particle identity, ..
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// Note: In addition to the values of member variables,
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// a user can use this to change the ChordFinder, the field, ...
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public: // with description
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inline G4double GetDeltaIntersection() const; // virtual ?
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// Accuracy for boundary intersection.
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inline G4double GetDeltaOneStep() const; // virtual ?
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// Accuracy for one tracking/physics step.
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inline void SetAccuraciesWithDeltaOneStep(G4double valDeltaOneStep);
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// Sets both accuracies, maintaining a fixed ratio for accuracties
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// of volume Intersection and Integration (in One Step)
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inline void SetDeltaOneStep(G4double valueD1step);
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// Set accuracy for integration of one step. (only)
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inline void SetDeltaIntersection(G4double valueDintersection);
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// Set accuracy of intersection of a volume. (only)
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inline G4double GetMinimumEpsilonStep() const;
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inline void SetMinimumEpsilonStep( G4double newEpsMin );
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// Minimum for Relative accuracy of a Step
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inline G4double GetMaximumEpsilonStep() const;
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inline void SetMaximumEpsilonStep( G4double newEpsMax );
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// Maximum for Relative accuracy of a Step
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inline G4bool DoesFieldChangeEnergy() const;
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inline void SetFieldChangesEnergy(G4bool value);
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// For electric field this should be true
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// For electromagnetic field this should be true
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// For magnetic field this should be false
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inline G4bool FieldHasMagComponent() const;
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inline void SetFieldMagComponent(G4bool value);
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// For electric field this should be true
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// For magnetic field this should be false
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private:
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G4FieldManager(const G4FieldManager&);
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G4FieldManager& operator=(const G4FieldManager&);
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// Private copy constructor and assignment operator.
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private:
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G4Field* fDetectorField;
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G4ChordFinder* fChordFinder;
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G4bool fAllocatedChordFinder; // Did we used "new" to
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// create fChordFinder ?
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G4bool fFieldChangesEnergy;
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// Values for the required accuracies
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//
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G4double fDelta_One_Step_Value; // for one tracking/physics step
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G4double fDelta_Intersection_Val; // for boundary intersection
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G4double fDefault_Delta_One_Step_Value; // = 0.25 * mm;
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G4double fDefault_Delta_Intersection_Val; // = 0.1 * mm;
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// Values for the small possible relative accuracy of a step
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// (corresponding to the greatest possible integration accuracy)
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G4double fEpsilonMinDefault; // Can be 1.0e-5 to 1.0e-10 ...
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G4double fEpsilonMaxDefault; // Can be 1.0e-3 to 1.0e-8 ...
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G4double fEpsilonMin;
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G4double fEpsilonMax;
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//TAO (nb if we add a value which is initialized in constructor: respect the order of declaration - initialization. therefor fMagComponent should be declared after fEpsilonMax .-cf constructors)
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G4bool fMagComponent;
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};
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// Our current design envisions that one Field manager is valid for a region of the detector.
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// (eg a detector with electric E and magnetic B field will now treat
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// them as one field - and could treat any other field of importance
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// as additional components of a single field.)
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// Does it make sense to have several instead ?
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// Is the lack of elegance of the design (of G4Field) made up
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// for by the simplification it allows ?
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// Implementation of inline functions
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#include "G4FieldManager.icc"
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#endif /* G4FIELDMANAGER_HH */
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