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: HEAD $ |
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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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