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25 // 25 //
26 // GEANT4 tag $ Name: $ 26 // GEANT4 tag $ Name: $
27 // 27 //
28 // class G4ITSafetyHelper Implementation 28 // class G4ITSafetyHelper Implementation
29 // 29 //
30 // Original author: John Apostolakis, 2006 30 // Original author: John Apostolakis, 2006
31 // 31 //
32 // ------------------------------------------- 32 // --------------------------------------------------------------------
33 33
34 #include "G4ITSafetyHelper.hh" 34 #include "G4ITSafetyHelper.hh"
35 #include "G4ITPathFinder.hh" 35 #include "G4ITPathFinder.hh"
36 #include "G4ITTransportationManager.hh" 36 #include "G4ITTransportationManager.hh"
37 #include "G4ITNavigator.hh" 37 #include "G4ITNavigator.hh"
38 #include "G4PathFinder.hh" 38 #include "G4PathFinder.hh"
39 #include "globals.hh" 39 #include "globals.hh"
40 40
41 G4ITSafetyHelper::G4ITSafetyHelper() << 41 G4ITSafetyHelper::G4ITSafetyHelper() :
>> 42 G4TrackStateDependent<G4ITSafetyHelper>(), fUseParallelGeometries(false), // By default, one geometry only
>> 43 fFirstCall(true), fVerbose(0)
>> 44 // fRecomputeFactor(0.0)
42 { 45 {
43 fpPathFinder = nullptr; // Cannot initialis << 46 fpPathFinder = 0; // Cannot initialise this yet - a loop results
44 47
45 // Initialization of the Navigator pointer i 48 // Initialization of the Navigator pointer is postponed, and must
46 // be undertaken by another class calling In 49 // be undertaken by another class calling InitialiseHelper()
47 // 50 //
48 fpMassNavigator = nullptr; << 51 fpMassNavigator = 0;
49 fMassNavigatorId = -1; 52 fMassNavigatorId = -1;
50 } 53 }
51 54
52 void G4ITSafetyHelper::InitialiseNavigator() 55 void G4ITSafetyHelper::InitialiseNavigator()
53 { 56 {
54 fpPathFinder = G4PathFinder::GetInstance(); 57 fpPathFinder = G4PathFinder::GetInstance();
55 58
56 G4ITTransportationManager* pTransportMgr = 59 G4ITTransportationManager* pTransportMgr =
57 G4ITTransportationManager::GetTransporta 60 G4ITTransportationManager::GetTransportationManager();
58 61
59 fpMassNavigator = pTransportMgr->GetNavigato 62 fpMassNavigator = pTransportMgr->GetNavigatorForTracking();
60 63
61 if(fpMassNavigator == nullptr) abort(); << 64 if(fpMassNavigator == 0) abort();
62 65
63 // Check 66 // Check
64 // 67 //
65 G4VPhysicalVolume* worldPV = fpMassNavigator 68 G4VPhysicalVolume* worldPV = fpMassNavigator->GetWorldVolume();
66 if (worldPV == nullptr) << 69 if (worldPV == 0)
67 { 70 {
68 G4Exception("G4ITSafetyHelper::InitialiseN 71 G4Exception("G4ITSafetyHelper::InitialiseNavigator",
69 "InvalidNavigatorWorld", Fatal 72 "InvalidNavigatorWorld", FatalException,
70 "Found that existing tracking 73 "Found that existing tracking Navigator has NULL world");
71 } 74 }
72 75
73 // fMassNavigatorId = pTransportMgr->Activat 76 // fMassNavigatorId = pTransportMgr->ActivateNavigator( fpMassNavigator );
74 } 77 }
75 78
76 void G4ITSafetyHelper::InitialiseHelper() 79 void G4ITSafetyHelper::InitialiseHelper()
77 { 80 {
78 NewTrackState(); 81 NewTrackState();
79 if (fFirstCall) 82 if (fFirstCall)
80 { 83 {
81 InitialiseNavigator(); 84 InitialiseNavigator();
82 } 85 }
83 fFirstCall = false; 86 fFirstCall = false;
84 } 87 }
85 88
86 G4ITSafetyHelper::~G4ITSafetyHelper() 89 G4ITSafetyHelper::~G4ITSafetyHelper()
87 = default; << 90 {
>> 91 }
88 92
89 G4double G4ITSafetyHelper::CheckNextStep(const 93 G4double G4ITSafetyHelper::CheckNextStep(const G4ThreeVector &position,
90 const 94 const G4ThreeVector &direction,
91 const 95 const G4double currentMaxStep,
92 G4dou 96 G4double& newSafety)
93 { 97 {
94 // Distance in the Mass geometry 98 // Distance in the Mass geometry
95 // 99 //
96 G4double linstep = fpMassNavigator->CheckNex 100 G4double linstep = fpMassNavigator->CheckNextStep(position, direction,
97 101 currentMaxStep, newSafety);
98 fpTrackState->fLastSafetyPosition = position 102 fpTrackState->fLastSafetyPosition = position;
99 fpTrackState->fLastSafety = newSafety; 103 fpTrackState->fLastSafety = newSafety;
100 104
101 // TODO: Can replace this with a call to Pat 105 // TODO: Can replace this with a call to PathFinder
102 // giving id of Mass Geometry --> thi 106 // giving id of Mass Geometry --> this avoid doing the work twice
103 107
104 return linstep; 108 return linstep;
105 } 109 }
106 110
107 G4double G4ITSafetyHelper::ComputeSafety(const 111 G4double G4ITSafetyHelper::ComputeSafety(const G4ThreeVector& position,
108 G4dou 112 G4double maxLength)
109 { 113 {
110 G4double newSafety; 114 G4double newSafety;
111 115
112 // Only recompute (calling Navigator/PathFin 116 // Only recompute (calling Navigator/PathFinder) if 'position'
113 // is *not* the safety location and has mov 117 // is *not* the safety location and has moved 'significantly'
114 // 118 //
115 G4double moveLengthSq = (position - fpTrackS 119 G4double moveLengthSq = (position - fpTrackState->fLastSafetyPosition).mag2();
116 if ((moveLengthSq > 0.0)) 120 if ((moveLengthSq > 0.0))
117 { 121 {
118 if (!fUseParallelGeometries) 122 if (!fUseParallelGeometries)
119 { 123 {
120 // Safety for mass geometry 124 // Safety for mass geometry
121 newSafety = fpMassNavigator->ComputeSafe 125 newSafety = fpMassNavigator->ComputeSafety(position, maxLength, true);
122 } 126 }
123 else 127 else
124 { 128 {
125 // Safety for all geometries 129 // Safety for all geometries
126 newSafety = fpPathFinder->ComputeSafety( 130 newSafety = fpPathFinder->ComputeSafety(position);
127 } 131 }
128 132
129 // We can only store a 'true' safety - one 133 // We can only store a 'true' safety - one that was not restricted by maxLength
130 if (newSafety < maxLength) 134 if (newSafety < maxLength)
131 { 135 {
132 fpTrackState->fLastSafety = newSafety; 136 fpTrackState->fLastSafety = newSafety;
133 fpTrackState->fLastSafetyPosition = posi 137 fpTrackState->fLastSafetyPosition = position;
134 } 138 }
135 } 139 }
136 else 140 else
137 { 141 {
138 // return last value if position is not (s 142 // return last value if position is not (significantly) changed
139 // 143 //
140 // G4double moveLength = 0; 144 // G4double moveLength = 0;
141 // if( moveLengthSq > 0.0 ) { moveLength= 145 // if( moveLengthSq > 0.0 ) { moveLength= std::sqrt(moveLengthSq); }
142 newSafety = fpTrackState->fLastSafety; // 146 newSafety = fpTrackState->fLastSafety; // -moveLength;
143 } 147 }
144 return newSafety; 148 return newSafety;
145 } 149 }
146 150
147 void G4ITSafetyHelper::ReLocateWithinVolume(co 151 void G4ITSafetyHelper::ReLocateWithinVolume(const G4ThreeVector &newPosition)
148 { 152 {
149 #ifdef G4VERBOSE 153 #ifdef G4VERBOSE
150 if (fVerbose > 0) 154 if (fVerbose > 0)
151 { 155 {
152 // There is an opportunity - and need - to 156 // There is an opportunity - and need - to check whether the proposed move is safe
153 G4ThreeVector moveVec = newPosition - fpTr 157 G4ThreeVector moveVec = newPosition - fpTrackState->fLastSafetyPosition;
154 if (moveVec.mag2() > sqr(fpTrackState->fLa 158 if (moveVec.mag2() > sqr(fpTrackState->fLastSafety))
155 { 159 {
156 // A problem exists - we are proposing t 160 // A problem exists - we are proposing to move outside 'Safety Sphere'
157 G4ExceptionDescription ed; 161 G4ExceptionDescription ed;
158 ed << " Safety Sphere: Radius = " << fp 162 ed << " Safety Sphere: Radius = " << fpTrackState->fLastSafety;
159 ed << " Center = " << fpTrackState->fL 163 ed << " Center = " << fpTrackState->fLastSafetyPosition << G4endl;
160 ed << " New Location : Move = " << mo 164 ed << " New Location : Move = " << moveVec.mag2();
161 ed << " Position = " << newPosition << G 165 ed << " Position = " << newPosition << G4endl;
162 G4Exception("G4ITSafetyHelper::ReLocateW 166 G4Exception("G4ITSafetyHelper::ReLocateWithinVolume", "GeomNav999",
163 JustWarning, 167 JustWarning,
164 "Unsafe Move> Asked to reloc 168 "Unsafe Move> Asked to relocate beyond 'Safety sphere'.");
165 } 169 }
166 } 170 }
167 #endif 171 #endif
168 172
169 if (!fUseParallelGeometries) 173 if (!fUseParallelGeometries)
170 { 174 {
171 fpMassNavigator->LocateGlobalPointWithinVo 175 fpMassNavigator->LocateGlobalPointWithinVolume(newPosition);
172 } 176 }
173 else 177 else
174 { 178 {
175 fpPathFinder->ReLocate(newPosition); 179 fpPathFinder->ReLocate(newPosition);
176 } 180 }
177 } 181 }
178 182
179 void G4ITSafetyHelper::Locate(const G4ThreeVec 183 void G4ITSafetyHelper::Locate(const G4ThreeVector& newPosition,
180 const G4ThreeVec 184 const G4ThreeVector& newDirection)
181 { 185 {
182 if (!fUseParallelGeometries) 186 if (!fUseParallelGeometries)
183 { 187 {
184 fpMassNavigator->LocateGlobalPointAndSetup 188 fpMassNavigator->LocateGlobalPointAndSetup(newPosition, &newDirection, true,
185 189 false);
186 } 190 }
187 else 191 else
188 { 192 {
189 fpPathFinder->Locate(newPosition, newDirec 193 fpPathFinder->Locate(newPosition, newDirection);
190 } 194 }
191 } 195 }
192 196