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G4ErrorPropagationNavigator.hh
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27 // $Id: G4ErrorPropagationNavigator.hh 87697 2014-12-17 09:40:21Z gcosmo $
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29 //
30 // --------------------------------------------------------------------
31 // GEANT 4 class header file
32 // --------------------------------------------------------------------
33 //
34 // Class Description:
35 //
36 // Class for performing double navigation in the detector geometry and
37 // on the target surface for error propagation. It overloads ComputeStep()
38 // and ComputeSafety() methods.
39 
40 // History:
41 // - Created. P. Arce, September 2004
42 // --------------------------------------------------------------------
43 
44 #ifndef G4ErrorPropagationNavigator_hh
45 #define G4ErrorPropagationNavigator_hh
46 
47 #include "G4Navigator.hh"
48 #include "G4ThreeVector.hh"
49 
51 {
52  public: // with description
53 
56 
57  G4double ComputeStep (const G4ThreeVector &pGlobalPoint,
58  const G4ThreeVector &pDirection,
59  const G4double pCurrentProposedStepLength,
60  G4double &pNewSafety);
61  // Calls the navigation in the detector geometry and then checks
62  // if the distance to surface is smaller than the proposed step
63 
64  G4double ComputeSafety(const G4ThreeVector &globalpoint,
65  const G4double pProposedMaxLength = DBL_MAX,
66  const G4bool keepState = true);
67  // Calls the navigation in the detector geometry and then checks
68  // if the distance to surface is smaller than the proposed safety
69 
71  G4bool* valid);
72  // Return Exit Surface Normal and validity too. Can only be called if
73  // the Navigator's last Step has crossed a volume geometrical boundary.
74  // Normal points out of the volume exited and/or into the volume entered.
75 
76  G4double TargetSafetyFromPoint( const G4ThreeVector &pGlobalpoint );
77  // Isotropic safety for 'Target'
78 
79  //-- NOT implemented, as it is difficult to define the coordinate system:
80  // G4ThreeVector GetLocalExitNormal(G4bool* valid);
81  // G4ThreeVector GetLocalExitNormalAndCheck(const G4ThreeVector& point,
82  // G4bool* valid);
83  // Convention:
84  // The *local* normal is in the coordinate system of the *final* volume.
85 };
86 
87 #endif
bool G4bool
Definition: G4Types.hh:79
G4double TargetSafetyFromPoint(const G4ThreeVector &pGlobalpoint)
G4double ComputeStep(const G4ThreeVector &pGlobalPoint, const G4ThreeVector &pDirection, const G4double pCurrentProposedStepLength, G4double &pNewSafety)
G4double ComputeSafety(const G4ThreeVector &globalpoint, const G4double pProposedMaxLength=DBL_MAX, const G4bool keepState=true)
G4ThreeVector GetGlobalExitNormal(const G4ThreeVector &point, G4bool *valid)
double G4double
Definition: G4Types.hh:76
#define DBL_MAX
Definition: templates.hh:83