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