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25 // 25 //
>> 26 // $Id: G4SafetyHelper.cc 81060 2014-05-20 09:12:39Z gcosmo $
>> 27 // GEANT4 tag $ Name: $
>> 28 //
26 // class G4SafetyHelper Implementation 29 // class G4SafetyHelper Implementation
27 // 30 //
28 // Original author: John Apostolakis, 2006 31 // Original author: John Apostolakis, 2006
>> 32 //
29 // ------------------------------------------- 33 // --------------------------------------------------------------------
30 34
31 #include "G4SafetyHelper.hh" 35 #include "G4SafetyHelper.hh"
32 #include "G4PathFinder.hh" 36 #include "G4PathFinder.hh"
33 #include "G4TransportationManager.hh" 37 #include "G4TransportationManager.hh"
34 #include "G4Navigator.hh" 38 #include "G4Navigator.hh"
35 39
36 #include "globals.hh" 40 #include "globals.hh"
37 41
38 // ------------------------------------------- <<
39 G4SafetyHelper::G4SafetyHelper() 42 G4SafetyHelper::G4SafetyHelper()
40 : fLastSafetyPosition(0.0,0.0,0.0) << 43 : fUseParallelGeometries(false), // By default, one geometry only
>> 44 fFirstCall(true),
>> 45 fVerbose(0),
>> 46 fLastSafetyPosition(0.0,0.0,0.0),
>> 47 fLastSafety(0.0)
>> 48 // fRecomputeFactor(0.0)
41 { 49 {
>> 50 fpPathFinder= 0; // Cannot initialise this yet - a loop results
>> 51
>> 52 // Initialization of the Navigator pointer is postponed, and must
>> 53 // be undertaken by another class calling InitialiseHelper()
>> 54 //
>> 55 fpMassNavigator= 0;
>> 56 fMassNavigatorId= -1;
42 } 57 }
43 58
44 // ------------------------------------------- <<
45 void G4SafetyHelper::InitialiseNavigator() 59 void G4SafetyHelper::InitialiseNavigator()
46 { 60 {
47 fpPathFinder = G4PathFinder::GetInstance(); << 61 fpPathFinder= G4PathFinder::GetInstance();
48 62
49 G4TransportationManager* pTransportMgr= 63 G4TransportationManager* pTransportMgr=
50 G4TransportationManager::GetTransportation 64 G4TransportationManager::GetTransportationManager();
51 65
52 fpMassNavigator = pTransportMgr->GetNavigato 66 fpMassNavigator = pTransportMgr->GetNavigatorForTracking();
53 67
54 // Check 68 // Check
55 // 69 //
56 G4VPhysicalVolume* worldPV = fpMassNavigator 70 G4VPhysicalVolume* worldPV = fpMassNavigator->GetWorldVolume();
57 if( worldPV == nullptr ) << 71 if( worldPV == 0 )
58 { 72 {
59 G4Exception("G4SafetyHelper::InitialiseNav 73 G4Exception("G4SafetyHelper::InitialiseNavigator",
60 "GeomNav0003", FatalException, << 74 "InvalidNavigatorWorld", FatalException,
61 "Found that existing tracking 75 "Found that existing tracking Navigator has NULL world");
62 } 76 }
>> 77
>> 78 fMassNavigatorId = pTransportMgr->ActivateNavigator( fpMassNavigator );
63 } 79 }
64 80
65 // ------------------------------------------- <<
66 void G4SafetyHelper::InitialiseHelper() 81 void G4SafetyHelper::InitialiseHelper()
67 { 82 {
68 fLastSafetyPosition = G4ThreeVector(0.0,0.0, 83 fLastSafetyPosition = G4ThreeVector(0.0,0.0,0.0);
69 fLastSafety = 0.0; 84 fLastSafety = 0.0;
70 if (fFirstCall) { InitialiseNavigator(); } 85 if (fFirstCall) { InitialiseNavigator(); }
71 fFirstCall = false; 86 fFirstCall = false;
72 } 87 }
73 88
74 G4SafetyHelper::~G4SafetyHelper() = default; << 89 G4SafetyHelper::~G4SafetyHelper()
>> 90 {
>> 91 }
75 92
76 G4double 93 G4double
77 G4SafetyHelper::CheckNextStep(const G4ThreeVec << 94 G4SafetyHelper::CheckNextStep(const G4ThreeVector &position,
78 const G4ThreeVec << 95 const G4ThreeVector &direction,
79 const G4double c 96 const G4double currentMaxStep,
80 G4double& 97 G4double& newSafety )
81 { 98 {
82 // Distance in the Mass geometry 99 // Distance in the Mass geometry
83 // 100 //
84 G4double linstep = fpMassNavigator->CheckNex 101 G4double linstep = fpMassNavigator->CheckNextStep( position,
85 102 direction,
86 103 currentMaxStep,
87 104 newSafety);
88 fLastSafetyPosition = position; 105 fLastSafetyPosition = position;
89 fLastSafety = newSafety; 106 fLastSafety = newSafety;
90 107
91 // TO-DO: Can replace this with a call to Pa 108 // TO-DO: Can replace this with a call to PathFinder
92 // giving id of Mass Geometry --> thi 109 // giving id of Mass Geometry --> this avoid doing the work twice
93 110
94 return linstep; 111 return linstep;
95 } 112 }
96 113
97 // ------------------------------------------- << 114 G4double G4SafetyHelper::ComputeSafety( const G4ThreeVector& position, G4double maxLength )
98 G4double G4SafetyHelper::ComputeSafety( const <<
99 <<
100 { 115 {
101 G4double newSafety; 116 G4double newSafety;
102 << 117
103 // Only recompute (calling Navigator/PathFin 118 // Only recompute (calling Navigator/PathFinder) if 'position'
104 // is *not* the safety location and has mov 119 // is *not* the safety location and has moved 'significantly'
105 // 120 //
106 G4double moveLengthSq = (position-fLastSafet 121 G4double moveLengthSq = (position-fLastSafetyPosition).mag2();
107 if( (moveLengthSq > 0.0 ) ) 122 if( (moveLengthSq > 0.0 ) )
108 { 123 {
109 if( !fUseParallelGeometries ) 124 if( !fUseParallelGeometries )
110 { 125 {
111 // Safety for mass geometry 126 // Safety for mass geometry
112 newSafety = fpMassNavigator->ComputeSafe 127 newSafety = fpMassNavigator->ComputeSafety(position, maxLength, true);
113 <<
114 // Only store a 'true' safety - one that <<
115 if( newSafety < maxLength ) <<
116 { <<
117 fLastSafety= newSafety; <<
118 fLastSafetyPosition = position; <<
119 } <<
120 } 128 }
121 else 129 else
122 { 130 {
123 // Safety for all geometries 131 // Safety for all geometries
124 newSafety = fpPathFinder->ComputeSafety( << 132 newSafety = fpPathFinder->ComputeSafety(position);
125 <<
126 fLastSafety= newSafety; <<
127 fLastSafetyPosition = position; <<
128 } 133 }
129 134
>> 135 // We can only store a 'true' safety - one that was not restricted by maxLength
>> 136 if( newSafety < maxLength )
>> 137 {
>> 138 fLastSafety= newSafety;
>> 139 fLastSafetyPosition = position;
>> 140 }
130 } 141 }
131 else 142 else
132 { 143 {
133 // return last value if position is not (s 144 // return last value if position is not (significantly) changed
134 // 145 //
135 // G4double moveLength = 0; 146 // G4double moveLength = 0;
136 // if( moveLengthSq > 0.0 ) { moveLength= 147 // if( moveLengthSq > 0.0 ) { moveLength= std::sqrt(moveLengthSq); }
137 newSafety = fLastSafety; // -moveLength; 148 newSafety = fLastSafety; // -moveLength;
138 } << 149 }
139 <<
140 return newSafety; 150 return newSafety;
141 } 151 }
142 152
143 // ------------------------------------------- << 153 void G4SafetyHelper::ReLocateWithinVolume( const G4ThreeVector &newPosition )
144 void G4SafetyHelper::ReLocateWithinVolume( con <<
145 { 154 {
146 #ifdef G4VERBOSE 155 #ifdef G4VERBOSE
147 if( fVerbose > 0 ) << 156 if( fVerbose > 0 ) {
148 { << 157 // There is an opportunity - and need - to check whether the proposed move is safe
149 // There is an opportunity - and need - to << 158 G4ThreeVector moveVec= newPosition - fLastSafetyPosition;
150 // the proposed move is safe <<
151 G4ThreeVector moveVec = newPosition - fLas <<
152 if( moveVec.mag2() > sqr(fLastSafety) ) 159 if( moveVec.mag2() > sqr(fLastSafety) )
153 { 160 {
154 // A problem exists - we are proposing t 161 // A problem exists - we are proposing to move outside 'Safety Sphere'
155 G4ExceptionDescription ed; 162 G4ExceptionDescription ed;
156 ed << "Unsafe Move> Asked to relocate be <<
157 << G4endl; <<
158 ed << " Safety Sphere: Radius = " << fL 163 ed << " Safety Sphere: Radius = " << fLastSafety;
159 ed << " Center = " << fLastSafetyPosit 164 ed << " Center = " << 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("G4SafetyHelper::ReLocateWit << 167 G4Exception("G4SafetyHelper::ReLocateWithinVolume", "GeomNav999", JustWarning,
163 "GeomNav1001", JustWarning, << 168 "Unsafe Move> Asked to relocate beyond 'Safety sphere'.");
164 } 169 }
165 } 170 }
166 #endif 171 #endif
167 172
168 if( !fUseParallelGeometries ) 173 if( !fUseParallelGeometries )
169 { 174 {
170 fpMassNavigator->LocateGlobalPointWithinVo 175 fpMassNavigator->LocateGlobalPointWithinVolume( newPosition );
171 } 176 }
172 else 177 else
173 { 178 {
174 fpPathFinder->ReLocate( newPosition ); 179 fpPathFinder->ReLocate( newPosition );
175 } 180 }
176 } 181 }
177 182
178 // ------------------------------------------- <<
179 void G4SafetyHelper::Locate( const G4ThreeVec 183 void G4SafetyHelper::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,
185 189 true, false);
186 } 190 }
187 else 191 else
188 { 192 {
189 fpPathFinder->Locate( newPosition, newDire 193 fpPathFinder->Locate( newPosition, newDirection );
190 } 194 }
191 } 195 }
>> 196
>> 197 G4bool G4SafetyHelper::RecheckDistanceToCurrentBoundary(
>> 198 const G4ThreeVector &pGlobalPoint,
>> 199 const G4ThreeVector &pDirection,
>> 200 const G4double aProposedMove,
>> 201 G4double *prDistance,
>> 202 G4double *prNewSafety) const
>> 203 {
>> 204 G4bool retval;
>> 205 if( !fUseParallelGeometries)
>> 206 {
>> 207 retval= fpMassNavigator->RecheckDistanceToCurrentBoundary(
>> 208 pGlobalPoint,
>> 209 pDirection,
>> 210 aProposedMove,
>> 211 prDistance,
>> 212 prNewSafety);
>> 213 }
>> 214 else
>> 215 {
>> 216 //G4Exception("G4Navigator::RecheckDistanceToCurrentBoundary()", "GeomNav0001",
>> 217 // JustWarning, "Method NOT Available (yet) in case of Multiple Geometries (where PathFinder is involved.).");
>> 218 retval= fpPathFinder->RecheckDistanceToCurrentBoundary(
>> 219 pGlobalPoint,
>> 220 pDirection,
>> 221 aProposedMove,
>> 222 prDistance,
>> 223 prNewSafety);
>> 224 }
>> 225 return retval;
>> 226 }
>> 227
192 228