| 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4ErrorTrackLengthTarget.hh,v 1.2 2007/05/29 14:41:35 gcosmo Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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| 29 | // |
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| 30 | // |
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| 31 | // Class Description: |
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| 32 | // |
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| 33 | // G4ErrorTarget class: limits step when track length is bigger than |
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| 34 | // theMaximumTrackLength. It is a G4VDiscreteProcess: limits the step in |
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| 35 | // PostStepGetPhysicalInteractionLength(). |
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| 36 | |
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| 37 | // History: |
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| 38 | // - Created. P. Arce, September 2004 |
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| 39 | // -------------------------------------------------------------------- |
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| 40 | |
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| 41 | #ifndef G4ErrorTrackLengthTarget_hh |
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| 42 | #define G4ErrorTrackLengthTarget_hh |
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| 43 | |
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| 44 | #include "G4ios.hh" |
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| 45 | #include "globals.hh" |
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| 46 | #include "G4VDiscreteProcess.hh" |
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| 47 | #include "G4PhysicsTable.hh" |
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| 48 | #include "G4PhysicsLogVector.hh" |
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| 49 | #include "G4ElementTable.hh" |
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| 50 | #include "G4Step.hh" |
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| 51 | #include "G4ErrorTarget.hh" |
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| 52 | |
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| 53 | //---------------------------------------------------------------------------- |
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| 54 | |
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| 55 | class G4ErrorTrackLengthTarget : public G4VDiscreteProcess, |
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| 56 | public G4ErrorTarget |
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| 57 | { |
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| 58 | public: // with description |
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| 59 | |
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| 60 | G4ErrorTrackLengthTarget(const G4double maxTrkLength ); |
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| 61 | // Constructs and add this process to G4ProcessManager of all particles |
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| 62 | virtual ~G4ErrorTrackLengthTarget(){} |
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| 63 | |
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| 64 | // These methods are dummy, as the step limitation is done in the |
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| 65 | // PostStepGetPhysicalInteractionLength(). |
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| 66 | |
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| 67 | virtual G4double GetDistanceFromPoint( const G4ThreeVector&, |
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| 68 | const G4ThreeVector& ) const |
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| 69 | { return DBL_MAX; } |
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| 70 | virtual G4double GetDistanceFromPoint( const G4ThreeVector& ) const |
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| 71 | { return DBL_MAX; } |
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| 72 | |
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| 73 | virtual G4double |
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| 74 | PostStepGetPhysicalInteractionLength( const G4Track& track, |
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| 75 | G4double previousStepSize, |
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| 76 | G4ForceCondition* condition ); |
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| 77 | // Checks if the maximum track length has been reached |
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| 78 | |
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| 79 | virtual G4double GetMeanFreePath(const class G4Track & track, |
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| 80 | G4double, G4ForceCondition *); |
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| 81 | // Mean free path = theMaximumTrackLength - track.GetTrackLength() |
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| 82 | |
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| 83 | virtual G4VParticleChange* PostStepDoIt( const G4Track&, const G4Step& ); |
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| 84 | |
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| 85 | virtual void Dump( const G4String& msg ) const; |
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| 86 | |
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| 87 | private: |
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| 88 | |
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| 89 | G4double theMaximumTrackLength; |
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| 90 | }; |
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| 91 | |
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| 92 | #endif |
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