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25 // 25 //
>> 26 //
>> 27 // $Id: G4MultiNavigator.hh,v 1.5 2008/10/24 14:00:03 gcosmo Exp $
>> 28 // GEANT4 tag $Name: geant4-09-03-patch-02 $
>> 29 //
>> 30 //
26 // class G4MultiNavigator 31 // class G4MultiNavigator
27 // 32 //
28 // Class description: 33 // Class description:
29 // 34 //
30 // Utility class for polling the navigators of 35 // Utility class for polling the navigators of several geometries to
31 // identify the next boundary. << 36 // identify the next boundary.
32 37
33 // History: 38 // History:
34 // - Created. John Apostolakis, November 2006 39 // - Created. John Apostolakis, November 2006
35 // ------------------------------------------- << 40 // *********************************************************************
>> 41
36 #ifndef G4MULTINAVIGATOR_HH 42 #ifndef G4MULTINAVIGATOR_HH
37 #define G4MULTINAVIGATOR_HH 43 #define G4MULTINAVIGATOR_HH
38 44
39 #include <iostream> 45 #include <iostream>
40 46
41 #include "geomdefs.hh" 47 #include "geomdefs.hh"
42 #include "G4ThreeVector.hh" 48 #include "G4ThreeVector.hh"
43 #include "G4Navigator.hh" 49 #include "G4Navigator.hh"
44 50
45 #include "G4TouchableHandle.hh" << 51 #include "G4TouchableHistoryHandle.hh"
46 52
47 #include "G4NavigationHistory.hh" 53 #include "G4NavigationHistory.hh"
48 54
49 enum ELimited { kDoNot,kUnique,kSharedTranspo 55 enum ELimited { kDoNot,kUnique,kSharedTransport,kSharedOther,kUndefLimited };
50 56
51 class G4TransportationManager; 57 class G4TransportationManager;
52 class G4VPhysicalVolume; 58 class G4VPhysicalVolume;
53 59
54 class G4MultiNavigator : public G4Navigator 60 class G4MultiNavigator : public G4Navigator
55 { 61 {
56 public: // with description 62 public: // with description
57 63
58 friend std::ostream& operator << (std::ostre << 64 friend std::ostream& operator << (std::ostream &os, const G4Navigator &n);
59 65
60 G4MultiNavigator(); 66 G4MultiNavigator();
61 // Constructor - initialisers and setup. 67 // Constructor - initialisers and setup.
62 68
63 ~G4MultiNavigator() override; << 69 ~G4MultiNavigator();
64 // Destructor. No actions. 70 // Destructor. No actions.
65 71
66 G4double ComputeStep( const G4ThreeVector& p << 72 G4double ComputeStep(const G4ThreeVector &pGlobalPoint,
67 const G4ThreeVector& p << 73 const G4ThreeVector &pDirection,
68 const G4double p << 74 const G4double pCurrentProposedStepLength,
69 G4double& p << 75 G4double &pNewSafety);
70 // Return the distance to the next boundar 76 // Return the distance to the next boundary of any geometry
71 77
72 G4double ObtainFinalStep( G4int navig 78 G4double ObtainFinalStep( G4int navigatorId,
73 G4double& pNewS << 79 G4double &pNewSafety, // for this geom
74 G4double& minSt << 80 G4double &minStepLast,
75 ELimited& limit << 81 ELimited &limitedStep);
76 // Get values for a single geometry 82 // Get values for a single geometry
77 83
78 void PrepareNavigators(); 84 void PrepareNavigators();
79 // Find which geometries are registered fo 85 // Find which geometries are registered for this particles, and keep info
80 void PrepareNewTrack( const G4ThreeVector& p << 86 void PrepareNewTrack( const G4ThreeVector position,
81 const G4ThreeVector di 87 const G4ThreeVector direction );
82 // Prepare Navigators and locate 88 // Prepare Navigators and locate
83 89
84 G4VPhysicalVolume* ResetHierarchyAndLocate( << 90 G4VPhysicalVolume* ResetHierarchyAndLocate(const G4ThreeVector &point,
85 const G4Thr << 91 const G4ThreeVector &direction,
86 const G4Tou << 92 const G4TouchableHistory &h);
87 // Reset the geometrical hierarchy for all 93 // Reset the geometrical hierarchy for all geometries.
88 // Use the touchable history for the first 94 // Use the touchable history for the first (mass) geometry.
89 // Return the volume in the first (mass) g 95 // Return the volume in the first (mass) geometry.
90 // 96 //
91 // Important Note: In order to call this t 97 // Important Note: In order to call this the geometries MUST be closed.
92 98
93 G4VPhysicalVolume* LocateGlobalPointAndSetup << 99 G4VPhysicalVolume* LocateGlobalPointAndSetup(const G4ThreeVector& point,
94 const G4Thr << 100 const G4ThreeVector* direction=0,
95 const G4boo << 101 const G4bool pRelativeSearch=true,
96 const G4boo << 102 const G4bool ignoreDirection=true);
97 // Locate in all geometries. 103 // Locate in all geometries.
98 // Return the volume in the first (mass) g 104 // Return the volume in the first (mass) geometry
99 // Maintain vector of other volumes, to 105 // Maintain vector of other volumes, to be returned separately
100 // 106 //
101 // Important Note: In order to call this t 107 // Important Note: In order to call this the geometry MUST be closed.
102 108
103 void LocateGlobalPointWithinVolume( const G4 << 109 void LocateGlobalPointWithinVolume(const G4ThreeVector& position);
104 // Relocate in all geometries for point th 110 // Relocate in all geometries for point that has not changed volume
105 // (ie is within safety in all geometries 111 // (ie is within safety in all geometries or is distance less that
106 // along the direction of a computed step. 112 // along the direction of a computed step.
107 113
108 G4double ComputeSafety( const G4ThreeVector& << 114 G4double ComputeSafety(const G4ThreeVector &globalpoint,
109 const G4double pProp << 115 const G4double pProposedMaxLength = DBL_MAX,
110 const G4bool keepSta << 116 const G4bool keepState = false);
111 // Calculate the isotropic distance to the 117 // Calculate the isotropic distance to the nearest boundary
112 // in any geometry from the specified poin 118 // in any geometry from the specified point in the global coordinate
113 // system. The geometry must be closed. 119 // system. The geometry must be closed.
114 120
115 G4TouchableHandle CreateTouchableHistoryHand << 121 G4TouchableHistoryHandle CreateTouchableHistoryHandle() const;
116 // Returns a reference counted handle to a 122 // Returns a reference counted handle to a touchable history.
117 123
118 G4ThreeVector GetLocalExitNormal( G4bool* ob <<
119 G4ThreeVector GetLocalExitNormalAndCheck( co <<
120 G4 <<
121 G4ThreeVector GetGlobalExitNormal( const G4T <<
122 G4b <<
123 // Return Exit Surface Normal and validity <<
124 // Can only be called if the Navigator's l <<
125 // - has just crossed a volume geometrica <<
126 // - has arrived at a boundary in a Compu <<
127 // It returns the Normal to the surface po <<
128 // was left behind and/or into the volum <<
129 // Convention:x <<
130 // The *local* normal is in the coordina <<
131 // Restriction: <<
132 // Normals are not available for replica <<
133 <<
134 public: // without description 124 public: // without description
135 125
136 inline G4Navigator* GetNavigator( G4int n ) << 126 G4Navigator* GetNavigator(G4int n) const
137 { 127 {
138 if( (n>fNoActiveNavigators) || (n<0) ) { n << 128 if( (n>fNoActiveNavigators)||(n<0)){ n=0; }
139 return fpNavigator[n]; << 129 return fpNavigator[n];
140 } 130 }
141 131
142 protected: // with description 132 protected: // with description
143 133
144 void ResetState() override; << 134 void ResetState();
145 // Utility method to reset the navigator s 135 // Utility method to reset the navigator state machine.
146 136
147 void SetupHierarchy() override; << 137 void SetupHierarchy();
148 // Renavigate & reset hierarchy described 138 // Renavigate & reset hierarchy described by current history
149 // o Reset volumes 139 // o Reset volumes
150 // o Recompute transforms and/or solids of 140 // o Recompute transforms and/or solids of replicated/parameterised
151 // volumes. 141 // volumes.
152 142
153 void WhichLimited(); // Flag which processes 143 void WhichLimited(); // Flag which processes limited the step
154 void PrintLimited(); // Auxiliary, debugging 144 void PrintLimited(); // Auxiliary, debugging printing
155 void CheckMassWorld(); 145 void CheckMassWorld();
156 146
157 private: 147 private:
158 148
159 // STATE Information 149 // STATE Information
160 150
161 G4int fNoActiveNavigators = 0; << 151 G4int fNoActiveNavigators;
162 static const G4int fMaxNav = 16; << 152 static const G4int fMaxNav = 8; // rename to kMaxNoNav ??
163 G4VPhysicalVolume* fLastMassWorld = nullptr << 153 G4VPhysicalVolume* fLastMassWorld;
164 154
165 G4Navigator* fpNavigator[fMaxNav]; << 155 // Global state (retained during stepping for one track
166 // Global state (retained during stepping << 156 G4Navigator* fpNavigator[fMaxNav]; // G4Navigator** fpNavigator;
167 157
168 // State after a step computation 158 // State after a step computation
169 // <<
170 ELimited fLimitedStep[fMaxNav]; 159 ELimited fLimitedStep[fMaxNav];
171 G4bool fLimitTruth[fMaxNav]; 160 G4bool fLimitTruth[fMaxNav];
172 G4double fCurrentStepSize[fMaxNav]; 161 G4double fCurrentStepSize[fMaxNav];
173 G4double fNewSafety[ fMaxNav ]; // Saf << 162 G4double fNewSafety[ fMaxNav ]; // Safety for starting point
174 G4int fNoLimitingStep = -1; // How << 163
175 G4int fIdNavLimiting = -1; // Id << 164 // Lowest values - determine step length, and safety
176 << 165 G4double fMinStep; // As reported by Navigators. Can be kInfinity
177 // Lowest values - determine step length, a << 166 G4double fMinSafety;
178 // << 167 G4double fTrueMinStep; // Corrected in case fMinStep >= proposed
179 G4double fMinStep = -kInfinity; // As <<
180 G4double fMinSafety = -kInfinity; <<
181 G4double fTrueMinStep = -kInfinity; // <<
182 168
183 // State after calling 'locate' 169 // State after calling 'locate'
184 // <<
185 G4VPhysicalVolume* fLocatedVolume[fMaxNav]; 170 G4VPhysicalVolume* fLocatedVolume[fMaxNav];
186 G4ThreeVector fLastLocatedPosition; 171 G4ThreeVector fLastLocatedPosition;
187 172
188 // Cache of safety information << 173 // cache of safety information
189 // << 174 G4ThreeVector fSafetyLocation; // point where ComputeSafety is called
190 G4ThreeVector fSafetyLocation; << 175 G4double fMinSafety_atSafLocation; // /\ corresponding value of safety
191 // point where ComputeSafety is called << 176 G4ThreeVector fPreStepLocation; // point where last ComputeStep called
192 G4double fMinSafety_atSafLocation = -1 << 177 G4double fMinSafety_PreStepPt; // /\ corresponding value of safety
193 // - corresponding value of safety <<
194 G4ThreeVector fPreStepLocation; <<
195 // point where last ComputeStep called <<
196 G4double fMinSafety_PreStepPt = -1.0; <<
197 // - corresponding value of safety <<
198 178
199 G4TransportationManager* pTransportManager; 179 G4TransportationManager* pTransportManager; // Cache for frequent use
200 }; 180 };
201 181
202 #endif 182 #endif
203 183