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25 // 25 //
>> 26 //
>> 27 // $Id: G4VIntersectionLocator.hh,v 1.6 2009-11-30 11:39:15 japost Exp $
>> 28 // GEANT4 tag $Name: not supported by cvs2svn $
>> 29 //
>> 30 //
26 // Class G4VIntersectionLocator 31 // Class G4VIntersectionLocator
27 // 32 //
28 // class description: 33 // class description:
29 // << 34 //
30 // Base class for the calculation of the inter 35 // Base class for the calculation of the intersection point with a boundary
31 // when PropagationInField is used. 36 // when PropagationInField is used.
32 // Gives possibility to choose the method of i 37 // Gives possibility to choose the method of intersection; concrete locators
33 // implemented are: G4SimpleLocator, G4MultiLe 38 // implemented are: G4SimpleLocator, G4MultiLevelLocator, G4BrentLocator.
34 // 39 //
35 // Key Method: EstimateIntersectionPoint() 40 // Key Method: EstimateIntersectionPoint()
36 41
>> 42 // History:
>> 43 // -------
37 // 27.10.08 - John Apostolakis, Tatiana Nikiti 44 // 27.10.08 - John Apostolakis, Tatiana Nikitina: Design and implementation
38 // ------------------------------------------- 45 // ---------------------------------------------------------------------------
>> 46
39 #ifndef G4VINTERSECTIONLOCATOR_HH 47 #ifndef G4VINTERSECTIONLOCATOR_HH
40 #define G4VINTERSECTIONLOCATOR_HH 48 #define G4VINTERSECTIONLOCATOR_HH
41 49
42 #include "G4Types.hh" 50 #include "G4Types.hh"
43 #include "G4ThreeVector.hh" 51 #include "G4ThreeVector.hh"
44 #include "G4FieldTrack.hh" 52 #include "G4FieldTrack.hh"
45 53
46 #include "G4Navigator.hh" 54 #include "G4Navigator.hh"
47 #include "G4ChordFinder.hh" 55 #include "G4ChordFinder.hh"
48 56
49 class G4VIntersectionLocator 57 class G4VIntersectionLocator
50 { 58 {
51 public: // with description 59 public: // with description
52 60
53 G4VIntersectionLocator(G4Navigator *theNa 61 G4VIntersectionLocator(G4Navigator *theNavigator);
54 // Constructor 62 // Constructor
55 virtual ~G4VIntersectionLocator(); 63 virtual ~G4VIntersectionLocator();
56 // Default destructor 64 // Default destructor
57 65
58 virtual G4bool EstimateIntersectionPoint( 66 virtual G4bool EstimateIntersectionPoint(
59 const G4FieldTrack& curveStartP << 67 const G4FieldTrack& curveStartPointTangent, // A
60 const G4FieldTrack& curveEndPoi << 68 const G4FieldTrack& curveEndPointTangent, // B
61 const G4ThreeVector& trialPoint, << 69 const G4ThreeVector& trialPoint, // E
62 G4FieldTrack& intersectPo << 70 G4FieldTrack& intersectPointTangent, // Output
63 G4bool& recalculate << 71 G4bool& recalculatedEndPoint, // Out
64 G4double& fPreviousSa << 72 G4double& fPreviousSafety, // In/Out
65 G4ThreeVector& fPreviousSf << 73 G4ThreeVector& fPreviousSftOrigin) = 0; // In/Out
66 // If such an intersection exists, this 74 // If such an intersection exists, this function calculates the
67 // intersection point of the true path 75 // intersection point of the true path of the particle with the surface
68 // of the current volume (or of one of 76 // of the current volume (or of one of its daughters).
69 // Should use lateral displacement as m 77 // Should use lateral displacement as measure of convergence
70 // NOTE: changes the safety! 78 // NOTE: changes the safety!
71 79
72 void printStatus( const G4FieldTrack& sta 80 void printStatus( const G4FieldTrack& startFT,
73 const G4FieldTrack& cur 81 const G4FieldTrack& currentFT,
74 G4double req 82 G4double requestStep,
75 G4double saf 83 G4double safety,
76 G4int ste << 84 G4int step);
77 // Print Method, useful mostly for debu 85 // Print Method, useful mostly for debugging
78 86
79 inline G4bool IntersectChord( const G4Thr 87 inline G4bool IntersectChord( const G4ThreeVector& StartPointA,
80 const G4Thr 88 const G4ThreeVector& EndPointB,
81 G4double& << 89 G4double &NewSafety,
82 G4double& << 90 G4double &PreviousSafety, // In/Out
83 G4ThreeVect << 91 G4ThreeVector &PreviousSftOrigin, // In/Out
84 G4double& << 92 G4double &LinearStepLength,
85 G4ThreeVect << 93 G4ThreeVector &IntersectionPoint,
86 G4bool* << 94 G4bool *calledNavigator=0 );
87 // Intersect the chord from StartPointA 95 // Intersect the chord from StartPointA to EndPointB and return
88 // whether an intersection occurred. NO 96 // whether an intersection occurred. NOTE: changes the Safety!
89 97
90 inline void SetEpsilonStepFor( G4double E << 98 inline void SetEpsilonStepFor( G4double EpsilonStep );
91 inline void SetDeltaIntersectionFor( G4do << 99 inline void SetDeltaIntersectionFor( G4double deltaIntersection );
92 inline void SetNavigatorFor( G4Navigator* << 100 inline void SetNavigatorFor( G4Navigator *fNavigator );
93 inline void SetChordFinderFor(G4ChordFind << 101 inline void SetChordFinderFor(G4ChordFinder *fCFinder );
94 // These parameters must be set at each 102 // These parameters must be set at each step, in case they were changed
>> 103
95 // Note: This simple approach ensures t 104 // Note: This simple approach ensures that all scenarios are considered.
96 // Future refinement may identify << 105 // [ Future refinement may identify which are invariant during a
97 // track, run or event << 106 // track, run or event ]
98 107
99 inline void SetVerboseFor(G4int fVerbose << 108 inline void SetVerboseFor(G4int fVerbose);
100 inline G4int GetVerboseFor(); << 109 inline G4int GetVerboseFor();
101 // Controling verbosity enables checkin 110 // Controling verbosity enables checking of the locating of intersections
102 111
103 public: // without description 112 public: // without description
104 <<
105 // Additional inline Set/Get methods for p 113 // Additional inline Set/Get methods for parameters, dependent objects
106 114
107 inline G4double GetDeltaIntersection 115 inline G4double GetDeltaIntersectionFor();
108 inline G4double GetEpsilonStepFor(); 116 inline G4double GetEpsilonStepFor();
109 inline G4Navigator* GetNavigatorFor(); 117 inline G4Navigator* GetNavigatorFor();
110 inline G4ChordFinder* GetChordFinderFor(); 118 inline G4ChordFinder* GetChordFinderFor();
111 119
112 inline void SetSafetyParametersFor(G4bool << 120 inline void SetSafetyParametersFor(G4bool UseSafety );
113 121
114 inline void AddAdjustementOfFoundIntersect << 122 inline void AddAdjustementOfFoundIntersection(G4bool UseCorrection);
115 inline G4bool GetAdjustementOfFoundInterse 123 inline G4bool GetAdjustementOfFoundIntersection();
116 // Methods to be made Obsolete - replace 124 // Methods to be made Obsolete - replaced by methods below
117 inline void AdjustIntersections(G4bool Use << 125 inline void AdjustIntersections(G4bool UseCorrection);
118 inline G4bool AreIntersectionsAdjusted(){ 126 inline G4bool AreIntersectionsAdjusted(){ return fUseNormalCorrection; }
119 // Change adjustment flag ( New Interfa 127 // Change adjustment flag ( New Interface )
120 128
121 static void printStatus( const G4FieldTrac <<
122 const G4FieldTrac <<
123 G4double <<
124 G4double <<
125 G4int <<
126 std::ostrea <<
127 G4int <<
128 // Print Method for any ostream - e.g. c <<
129 <<
130 inline void SetCheckMode( G4bool value ) { <<
131 inline G4bool GetCheckMode() { <<
132 <<
133 protected: // with description 129 protected: // with description
134 130
135 G4FieldTrack ReEstimateEndpoint( const G4F << 131 G4FieldTrack ReEstimateEndpoint( const G4FieldTrack &CurrentStateA,
136 const G4F << 132 const G4FieldTrack &EstimtdEndStateB,
137 G4d << 133 G4double linearDistSq,
138 G4d << 134 G4double curveDist);
139 // Return new estimate for state after c 135 // Return new estimate for state after curveDist starting from
140 // CurrentStateA, to replace EstimtdEndS 136 // CurrentStateA, to replace EstimtdEndStateB, and report displacement
141 // (if field is compiled verbose) 137 // (if field is compiled verbose)
142 138
143 G4bool CheckAndReEstimateEndpoint( const G << 139 G4ThreeVector GetSurfaceNormal(const G4ThreeVector &CurrentInt_Point,
144 const G << 140 G4bool &validNormal); // const
145 G <<
146 G <<
147 // Check whether EndB is too far from St <<
148 // and if, re-estimate new value for End <<
149 // Report error if EndB is before Start <<
150 // In that case return errorCode = 2. <<
151 <<
152 G4ThreeVector GetSurfaceNormal(const G4Thr <<
153 G4boo <<
154 // Position *must* be the intersection p 141 // Position *must* be the intersection point from last call
155 // to G4Navigator's ComputeStep (via In 142 // to G4Navigator's ComputeStep (via IntersectChord )
156 // Will try to use cached (last) value i 143 // Will try to use cached (last) value in Navigator for speed,
157 // if it was kept and valid. 144 // if it was kept and valid.
158 // Value returned is in global coordinat 145 // Value returned is in global coordinates.
159 // It does NOT guarantee to obtain Norma 146 // It does NOT guarantee to obtain Normal. This can happen eg if:
160 // - the "Intersection" Point is not on 147 // - the "Intersection" Point is not on a surface, potentially due to
161 // - inaccuracies in the transformation 148 // - inaccuracies in the transformations used, or
162 // - issues with the Solid. 149 // - issues with the Solid.
163 150
164 G4ThreeVector GetGlobalSurfaceNormal(const << 151 G4ThreeVector GetGlobalSurfaceNormal(const G4ThreeVector &CurrentE_Point,
165 << 152 G4bool &validNormal);
166 // Return the SurfaceNormal of Intersect 153 // Return the SurfaceNormal of Intersecting Solid in global coordinates
167 // Costlier then GetSurfaceNormal 154 // Costlier then GetSurfaceNormal
168 155
169 G4bool AdjustmentOfFoundIntersection(const << 156 G4bool AdjustmentOfFoundIntersection(const G4ThreeVector &A,
170 const << 157 const G4ThreeVector &CurrentE_Point,
171 const << 158 const G4ThreeVector &CurrentF_Point,
172 const << 159 const G4ThreeVector &MomentumDir,
173 const 160 const G4bool IntersectAF,
174 << 161 G4ThreeVector &IntersectionPoint,
175 << 162 G4double &NewSafety,
176 << 163 G4double &fPrevSafety,
177 << 164 G4ThreeVector &fPrevSftOrigin );
178 // Optional method for adjustment of loc 165 // Optional method for adjustment of located intersection point
179 // using the surface-normal 166 // using the surface-normal
180 167
181 void ReportTrialStep( G4int step_no, 168 void ReportTrialStep( G4int step_no,
182 const G4ThreeVector& 169 const G4ThreeVector& ChordAB_v,
183 const G4ThreeVector& 170 const G4ThreeVector& ChordEF_v,
184 const G4ThreeVector& 171 const G4ThreeVector& NewMomentumDir,
185 const G4ThreeVector& 172 const G4ThreeVector& NormalAtEntry,
186 G4bool validNormal 173 G4bool validNormal );
187 // Print a three-line report on the curr << 174 // Print a three-line report on the current "sub-step", ie trial intersection
188 // intersection <<
189 175
190 G4bool LocateGlobalPointWithinVolumeAndChe <<
191 // Locate point using navigator - update <<
192 // By default, it assumes that the point <<
193 // and returns true. <<
194 // In check mode, checks whether the poi <<
195 // If it is inside, it returns true. <<
196 // If not, issues a warning and return <<
197 <<
198 void LocateGlobalPointWithinVolumeCheckAnd <<
199 co <<
200 <<
201 // As above, but report information abou <<
202 // If CheckMode > 1, report extra inform <<
203 <<
204 protected: // without description <<
205 <<
206 // Auxiliary methods -- to report issues <<
207 <<
208 void ReportReversedPoints( std::ostringstr <<
209 const G4FieldTr <<
210 const G4FieldTr <<
211 G4double <<
212 const G4FieldTr <<
213 const G4FieldTr <<
214 const G4FieldTr <<
215 const G4ThreeVe <<
216 const G4FieldTr <<
217 G4int sbstp_no, <<
218 // Build error messsage (in ossMsg) to r <<
219 // gone past 'A' <<
220 <<
221 void ReportProgress( std::ostream& oss, <<
222 const G4FieldTrack& S <<
223 const G4FieldTrack& E <<
224 G4int s <<
225 const G4FieldTrack& A <<
226 const G4FieldTrack& B <<
227 G4double s <<
228 G4int d <<
229 // Report the current status / progress <<
230 <<
231 void ReportImmediateHit( const char* <<
232 const G4ThreeVec <<
233 const G4ThreeVec <<
234 G4double <<
235 unsigned long <<
236 // Report case: trial point is 'close' t <<
237 <<
238 private: // no description 176 private: // no description
239 177
240 G4ThreeVector GetLocalSurfaceNormal(const << 178 G4ThreeVector GetLocalSurfaceNormal(const G4ThreeVector &CurrentE_Point,
241 << 179 G4bool &validNormal);
242 // Return the SurfaceNormal of Intersect 180 // Return the SurfaceNormal of Intersecting Solid in local coordinates
243 181
244 G4ThreeVector GetLastSurfaceNormal( const 182 G4ThreeVector GetLastSurfaceNormal( const G4ThreeVector& intersectPoint,
245 << 183 G4bool &validNormal) const;
246 // Position *must* be the intersection p 184 // Position *must* be the intersection point from last call
247 // to G4Navigator's ComputeStep (via In 185 // to G4Navigator's ComputeStep (via IntersectChord )
248 // Temporary - will use the same method 186 // Temporary - will use the same method in the Navigator
249 187
250 protected: 188 protected:
251 189
252 G4double kCarTolerance; / << 190 G4double kCarTolerance; // Constant
>> 191
>> 192 G4int fVerboseLevel; // For debugging
>> 193 G4bool fUseNormalCorrection; // Configuration parameter
>> 194
>> 195 G4Navigator *fiNavigator;
253 196
254 G4int fVerboseLevel = 0; / << 197 G4ChordFinder *fiChordFinder;
255 G4bool fUseNormalCorrection = false; / << 198 G4double fiEpsilonStep;
256 G4bool fCheckMode = false; << 199 G4double fiDeltaIntersection;
257 G4bool fiUseSafety = false; // Whethe << 200 G4bool fiUseSafety;
258 <<
259 G4Navigator* fiNavigator; <<
260 <<
261 G4ChordFinder* fiChordFinder = nullptr; / <<
262 G4double fiEpsilonStep = -1.0; / <<
263 G4double fiDeltaIntersection = -1.0; / <<
264 // Parameters set at each physical step 201 // Parameters set at each physical step by calling method
265 // by G4PropagatorInField 202 // by G4PropagatorInField
266 203
267 G4Navigator *fHelpingNavigator; 204 G4Navigator *fHelpingNavigator;
268 // Helper for location 205 // Helper for location
269 206
270 G4TouchableHistory *fpTouchable = nullptr; << 207 G4TouchableHistory *fpTouchable;
271 // Touchable history hook 208 // Touchable history hook
272 }; 209 };
273 210
274 #include "G4VIntersectionLocator.icc" 211 #include "G4VIntersectionLocator.icc"
275 212
276 #endif 213 #endif
277 214