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25 // 25 //
>> 26 // $Id: G4ITSafetyHelper.cc 72309 2013-07-15 15:52:17Z gcosmo $
26 // GEANT4 tag $ Name: $ 27 // GEANT4 tag $ Name: $
27 // 28 //
28 // class G4ITSafetyHelper Implementation 29 // class G4ITSafetyHelper Implementation
29 // 30 //
30 // Original author: John Apostolakis, 2006 31 // Original author: John Apostolakis, 2006
31 // 32 //
32 // ------------------------------------------- 33 // --------------------------------------------------------------------
33 34
34 #include "G4ITSafetyHelper.hh" 35 #include "G4ITSafetyHelper.hh"
35 #include "G4ITPathFinder.hh" 36 #include "G4ITPathFinder.hh"
36 #include "G4ITTransportationManager.hh" 37 #include "G4ITTransportationManager.hh"
37 #include "G4ITNavigator.hh" 38 #include "G4ITNavigator.hh"
38 #include "G4PathFinder.hh" 39 #include "G4PathFinder.hh"
39 #include "globals.hh" 40 #include "globals.hh"
40 41
41 G4ITSafetyHelper::G4ITSafetyHelper() << 42 G4ITSafetyHelper::G4ITSafetyHelper() :
>> 43 G4TrackStateDependent<G4ITSafetyHelper>(), fUseParallelGeometries(false), // By default, one geometry only
>> 44 fFirstCall(true), fVerbose(0)
>> 45 // fRecomputeFactor(0.0)
42 { 46 {
43 fpPathFinder = nullptr; // Cannot initialis << 47 fpPathFinder = 0; // Cannot initialise this yet - a loop results
44 48
45 // Initialization of the Navigator pointer i 49 // Initialization of the Navigator pointer is postponed, and must
46 // be undertaken by another class calling In 50 // be undertaken by another class calling InitialiseHelper()
47 // 51 //
48 fpMassNavigator = nullptr; << 52 fpMassNavigator = 0;
49 fMassNavigatorId = -1; 53 fMassNavigatorId = -1;
50 } 54 }
51 55
52 void G4ITSafetyHelper::InitialiseNavigator() 56 void G4ITSafetyHelper::InitialiseNavigator()
53 { 57 {
54 fpPathFinder = G4PathFinder::GetInstance(); 58 fpPathFinder = G4PathFinder::GetInstance();
55 59
56 G4ITTransportationManager* pTransportMgr = 60 G4ITTransportationManager* pTransportMgr =
57 G4ITTransportationManager::GetTransporta 61 G4ITTransportationManager::GetTransportationManager();
58 62
59 fpMassNavigator = pTransportMgr->GetNavigato 63 fpMassNavigator = pTransportMgr->GetNavigatorForTracking();
60 64
61 if(fpMassNavigator == nullptr) abort(); << 65 if(fpMassNavigator == 0) abort();
62 66
63 // Check 67 // Check
64 // 68 //
65 G4VPhysicalVolume* worldPV = fpMassNavigator 69 G4VPhysicalVolume* worldPV = fpMassNavigator->GetWorldVolume();
66 if (worldPV == nullptr) << 70 if (worldPV == 0)
67 { 71 {
68 G4Exception("G4ITSafetyHelper::InitialiseN 72 G4Exception("G4ITSafetyHelper::InitialiseNavigator",
69 "InvalidNavigatorWorld", Fatal 73 "InvalidNavigatorWorld", FatalException,
70 "Found that existing tracking 74 "Found that existing tracking Navigator has NULL world");
71 } 75 }
72 76
73 // fMassNavigatorId = pTransportMgr->Activat 77 // fMassNavigatorId = pTransportMgr->ActivateNavigator( fpMassNavigator );
74 } 78 }
75 79
76 void G4ITSafetyHelper::InitialiseHelper() 80 void G4ITSafetyHelper::InitialiseHelper()
77 { 81 {
78 NewTrackState(); 82 NewTrackState();
79 if (fFirstCall) 83 if (fFirstCall)
80 { 84 {
81 InitialiseNavigator(); 85 InitialiseNavigator();
82 } 86 }
83 fFirstCall = false; 87 fFirstCall = false;
84 } 88 }
85 89
86 G4ITSafetyHelper::~G4ITSafetyHelper() 90 G4ITSafetyHelper::~G4ITSafetyHelper()
87 = default; << 91 {
>> 92 }
88 93
89 G4double G4ITSafetyHelper::CheckNextStep(const 94 G4double G4ITSafetyHelper::CheckNextStep(const G4ThreeVector &position,
90 const 95 const G4ThreeVector &direction,
91 const 96 const G4double currentMaxStep,
92 G4dou 97 G4double& newSafety)
93 { 98 {
94 // Distance in the Mass geometry 99 // Distance in the Mass geometry
95 // 100 //
96 G4double linstep = fpMassNavigator->CheckNex 101 G4double linstep = fpMassNavigator->CheckNextStep(position, direction,
97 102 currentMaxStep, newSafety);
98 fpTrackState->fLastSafetyPosition = position 103 fpTrackState->fLastSafetyPosition = position;
99 fpTrackState->fLastSafety = newSafety; 104 fpTrackState->fLastSafety = newSafety;
100 105
101 // TODO: Can replace this with a call to Pat 106 // TODO: Can replace this with a call to PathFinder
102 // giving id of Mass Geometry --> thi 107 // giving id of Mass Geometry --> this avoid doing the work twice
103 108
104 return linstep; 109 return linstep;
105 } 110 }
106 111
107 G4double G4ITSafetyHelper::ComputeSafety(const 112 G4double G4ITSafetyHelper::ComputeSafety(const G4ThreeVector& position,
108 G4dou 113 G4double maxLength)
109 { 114 {
110 G4double newSafety; 115 G4double newSafety;
111 116
112 // Only recompute (calling Navigator/PathFin 117 // Only recompute (calling Navigator/PathFinder) if 'position'
113 // is *not* the safety location and has mov 118 // is *not* the safety location and has moved 'significantly'
114 // 119 //
115 G4double moveLengthSq = (position - fpTrackS 120 G4double moveLengthSq = (position - fpTrackState->fLastSafetyPosition).mag2();
116 if ((moveLengthSq > 0.0)) 121 if ((moveLengthSq > 0.0))
117 { 122 {
118 if (!fUseParallelGeometries) 123 if (!fUseParallelGeometries)
119 { 124 {
120 // Safety for mass geometry 125 // Safety for mass geometry
121 newSafety = fpMassNavigator->ComputeSafe 126 newSafety = fpMassNavigator->ComputeSafety(position, maxLength, true);
122 } 127 }
123 else 128 else
124 { 129 {
125 // Safety for all geometries 130 // Safety for all geometries
126 newSafety = fpPathFinder->ComputeSafety( 131 newSafety = fpPathFinder->ComputeSafety(position);
127 } 132 }
128 133
129 // We can only store a 'true' safety - one 134 // We can only store a 'true' safety - one that was not restricted by maxLength
130 if (newSafety < maxLength) 135 if (newSafety < maxLength)
131 { 136 {
132 fpTrackState->fLastSafety = newSafety; 137 fpTrackState->fLastSafety = newSafety;
133 fpTrackState->fLastSafetyPosition = posi 138 fpTrackState->fLastSafetyPosition = position;
134 } 139 }
135 } 140 }
136 else 141 else
137 { 142 {
138 // return last value if position is not (s 143 // return last value if position is not (significantly) changed
139 // 144 //
140 // G4double moveLength = 0; 145 // G4double moveLength = 0;
141 // if( moveLengthSq > 0.0 ) { moveLength= 146 // if( moveLengthSq > 0.0 ) { moveLength= std::sqrt(moveLengthSq); }
142 newSafety = fpTrackState->fLastSafety; // 147 newSafety = fpTrackState->fLastSafety; // -moveLength;
143 } 148 }
144 return newSafety; 149 return newSafety;
145 } 150 }
146 151
147 void G4ITSafetyHelper::ReLocateWithinVolume(co 152 void G4ITSafetyHelper::ReLocateWithinVolume(const G4ThreeVector &newPosition)
148 { 153 {
149 #ifdef G4VERBOSE 154 #ifdef G4VERBOSE
150 if (fVerbose > 0) 155 if (fVerbose > 0)
151 { 156 {
152 // There is an opportunity - and need - to 157 // There is an opportunity - and need - to check whether the proposed move is safe
153 G4ThreeVector moveVec = newPosition - fpTr 158 G4ThreeVector moveVec = newPosition - fpTrackState->fLastSafetyPosition;
154 if (moveVec.mag2() > sqr(fpTrackState->fLa 159 if (moveVec.mag2() > sqr(fpTrackState->fLastSafety))
155 { 160 {
156 // A problem exists - we are proposing t 161 // A problem exists - we are proposing to move outside 'Safety Sphere'
157 G4ExceptionDescription ed; 162 G4ExceptionDescription ed;
158 ed << " Safety Sphere: Radius = " << fp 163 ed << " Safety Sphere: Radius = " << fpTrackState->fLastSafety;
159 ed << " Center = " << fpTrackState->fL 164 ed << " Center = " << fpTrackState->fLastSafetyPosition << G4endl;
160 ed << " New Location : Move = " << mo 165 ed << " New Location : Move = " << moveVec.mag2();
161 ed << " Position = " << newPosition << G 166 ed << " Position = " << newPosition << G4endl;
162 G4Exception("G4ITSafetyHelper::ReLocateW 167 G4Exception("G4ITSafetyHelper::ReLocateWithinVolume", "GeomNav999",
163 JustWarning, 168 JustWarning,
164 "Unsafe Move> Asked to reloc 169 "Unsafe Move> Asked to relocate beyond 'Safety sphere'.");
165 } 170 }
166 } 171 }
167 #endif 172 #endif
168 173
169 if (!fUseParallelGeometries) 174 if (!fUseParallelGeometries)
170 { 175 {
171 fpMassNavigator->LocateGlobalPointWithinVo 176 fpMassNavigator->LocateGlobalPointWithinVolume(newPosition);
172 } 177 }
173 else 178 else
174 { 179 {
175 fpPathFinder->ReLocate(newPosition); 180 fpPathFinder->ReLocate(newPosition);
176 } 181 }
177 } 182 }
178 183
179 void G4ITSafetyHelper::Locate(const G4ThreeVec 184 void G4ITSafetyHelper::Locate(const G4ThreeVector& newPosition,
180 const G4ThreeVec 185 const G4ThreeVector& newDirection)
181 { 186 {
182 if (!fUseParallelGeometries) 187 if (!fUseParallelGeometries)
183 { 188 {
184 fpMassNavigator->LocateGlobalPointAndSetup 189 fpMassNavigator->LocateGlobalPointAndSetup(newPosition, &newDirection, true,
185 190 false);
186 } 191 }
187 else 192 else
188 { 193 {
189 fpPathFinder->Locate(newPosition, newDirec 194 fpPathFinder->Locate(newPosition, newDirection);
190 } 195 }
191 } 196 }
192 197