Gabriele Cosmo
94 lines
3.6 KiB
C++
94 lines
3.6 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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//
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//
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// Class Description:
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//
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// G4ErrorTarget class: limits step when track length is bigger than
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// theMaximumTrackLength. It is a G4VDiscreteProcess: limits the step in
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// PostStepGetPhysicalInteractionLength().
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// History:
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// - Created. P. Arce, September 2004
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// --------------------------------------------------------------------
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#ifndef G4ErrorTrackLengthTarget_hh
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#define G4ErrorTrackLengthTarget_hh
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#include "G4ios.hh"
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#include "globals.hh"
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#include "G4VDiscreteProcess.hh"
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#include "G4PhysicsTable.hh"
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#include "G4PhysicsLogVector.hh"
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#include "G4ElementTable.hh"
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#include "G4Step.hh"
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#include "G4ErrorTarget.hh"
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//----------------------------------------------------------------------------
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class G4ErrorTrackLengthTarget
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: public G4VDiscreteProcess
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, public G4ErrorTarget
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{
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public: // with description
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G4ErrorTrackLengthTarget(const G4double maxTrkLength);
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// Constructs and add this process to G4ProcessManager of all particles
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virtual ~G4ErrorTrackLengthTarget() {}
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// These methods are dummy, as the step limitation is done in the
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// PostStepGetPhysicalInteractionLength().
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virtual G4double GetDistanceFromPoint(const G4ThreeVector&,
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const G4ThreeVector&) const
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{
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return DBL_MAX;
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}
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virtual G4double GetDistanceFromPoint(const G4ThreeVector&) const
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{
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return DBL_MAX;
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}
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virtual G4double PostStepGetPhysicalInteractionLength(
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const G4Track& track, G4double previousStepSize,
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G4ForceCondition* condition);
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// Checks if the maximum track length has been reached
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virtual G4double GetMeanFreePath(const class G4Track& track, G4double,
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G4ForceCondition*);
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// Mean free path = theMaximumTrackLength - track.GetTrackLength()
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virtual G4VParticleChange* PostStepDoIt(const G4Track&, const G4Step&);
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virtual void Dump(const G4String& msg) const;
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private:
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G4double theMaximumTrackLength;
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G4VParticleChange theParticleChange;
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};
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#endif
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