Gabriele Cosmo
85 lines
3.4 KiB
C++
85 lines
3.4 KiB
C++
//
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// ********************************************************************
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// * License and Disclaimer *
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// * *
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// * The Geant4 software is copyright of the Copyright Holders of *
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// * the Geant4 Collaboration. It is provided under the terms and *
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// * conditions of the Geant4 Software License, included in the file *
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// * LICENSE and available at http://cern.ch/geant4/license . These *
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// * include a list of copyright holders. *
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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. Please see the license in the file LICENSE and URL above *
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// * for the full disclaimer and the limitation of liability. *
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// * *
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// * This code implementation is the result of the scientific and *
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// * technical work of the GEANT4 collaboration. *
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// * By using, copying, modifying or distributing the software (or *
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// * any work based on the software) you agree to acknowledge its *
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// * use in resulting scientific publications, and indicate your *
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// * acceptance of all terms of the Geant4 Software license. *
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// ********************************************************************
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//
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//
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// $ Id: G4CachedMagneticField.hh,v 1.0 2009/07/20 18:53:00 japost Exp $
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//
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//
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// class G4CachedMagneticField
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//
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// Class description:
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//
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// Caches Magnetic Field value, for field whose evaluation is expensive.
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// History:
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// - Created. JA, July 20th, 2009.
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// --------------------------------------------------------------------
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#ifndef G4CACHED_MAGNETIC_FIELD_DEF
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#define G4CACHED_MAGNETIC_FIELD_DEF
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#include "G4Types.hh"
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#include "G4ThreeVector.hh"
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#include "G4MagneticField.hh"
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class G4CachedMagneticField : public G4MagneticField
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{
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public: // with description
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G4CachedMagneticField(G4MagneticField *, G4double distanceConst);
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virtual ~G4CachedMagneticField();
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// Constructor and destructor. No actions.
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G4CachedMagneticField(const G4CachedMagneticField &r);
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G4CachedMagneticField& operator = (const G4CachedMagneticField &p);
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// Copy constructor & assignment operator.
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virtual void GetFieldValue( const G4double Point[4],
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G4double *Bfield ) const;
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G4double GetConstDistance() const { return fDistanceConst; }
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void SetConstDistance( G4double dist ){ fDistanceConst= dist;}
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G4int GetCountCalls() const { return fCountCalls; }
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G4int GetCountEvaluations() const { return fCountEvaluations; }
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void ClearCounts() { fCountCalls = 0; fCountEvaluations=0; }
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void ReportStatistics();
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virtual G4Field* Clone() const;
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private:
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G4MagneticField *fpMagneticField;
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// When the field is evaluated within this distance it will not change
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G4double fDistanceConst;
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// Caching state
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mutable G4ThreeVector fLastLocation;
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mutable G4ThreeVector fLastValue;
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protected:
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mutable G4int fCountCalls, fCountEvaluations;
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};
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#endif /* G4CACHED_MAGNETIC_FIELD_DEF */
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