Gabriele Cosmo
109 lines
4.6 KiB
C++
109 lines
4.6 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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/// \file TrackingManagerHelper.hh
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/// \brief Definition of the TrackingManagerHelper class
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/// \class TrackingManagerHelper
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///
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/// Class description:
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///
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/// Helper class for reducing the effort required to implement a custom tracking
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/// manager. It implements a stepping loop that calls user actions as the generic
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/// tracking and stepping managers do, and it implements navigation for charged
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/// particles in energy-preserving fields and for neutral particles.
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///
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/// Original author: Jonas Hahnfeld, 2021
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#ifndef TrackingManagerHelper_hh
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#define TrackingManagerHelper_hh 1
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#include "G4TrackVector.hh"
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#include "globals.hh"
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class G4Step;
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class G4Track;
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class TrackingManagerHelper
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{
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public:
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class Physics
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{
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public:
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virtual void StartTracking(G4Track*) {}
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virtual void EndTracking() {}
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// Combines AlongStep and PostStep; the implementation needs to remember
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// the right value to pass as previousStepSize to G4VProcess.
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virtual G4double GetPhysicalInteractionLength(const G4Track& track) = 0;
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// This method is called for every step after navigation. The updated
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// position is stored in the G4Step's post-step point. Any particle change
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// should be applied directly to the step, UpdateTrack() will be called
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// automatically after this method returns. If secondaries should be given
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// back to the G4EventManager, put them into the container passed as the
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// last argument.
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virtual void AlongStepDoIt(G4Track& track, G4Step& step, G4TrackVector& secondaries) = 0;
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// This method is called unless the track has been killed during this step.
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// If secondaries should be given back to the G4EventManager, put them into
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// the container passed as the last argument.
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virtual void PostStepDoIt(G4Track& track, G4Step& step, G4TrackVector& secondaries) = 0;
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virtual bool HasAtRestProcesses() { return false; }
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// This method is called when a track is stopped, but still alive. If
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// secondaries should be given back to the G4EventManager, put them into
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// the container passed as the last argument.
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virtual void AtRestDoIt(G4Track& track, G4Step& step, G4TrackVector& secondaries)
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{
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(void)track;
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(void)step;
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(void)secondaries;
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}
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};
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class Navigation
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{
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public:
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virtual G4double MakeStep(G4Track& track, G4Step& step, G4double physicalStep) = 0;
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virtual void FinishStep(G4Track& track, G4Step& step) = 0;
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};
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template<typename PhysicsImpl, typename NavigationImpl>
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static void TrackParticle(G4Track* aTrack, PhysicsImpl& physics, NavigationImpl& navigation);
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template<typename PhysicsImpl>
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static void TrackChargedParticle(G4Track* aTrack, PhysicsImpl& physics);
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template<typename PhysicsImpl>
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static void TrackNeutralParticle(G4Track* aTrack, PhysicsImpl& physics);
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};
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#include "TrackingManagerHelper.icc"
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#endif
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