[831] | 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4Navigator.cc,v 1.37 2007/10/18 14:18:36 gcosmo Exp $ |
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| 28 | // GEANT4 tag $ Name: $ |
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| 29 | // |
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| 30 | // class G4Navigator Implementation |
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| 31 | // |
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| 32 | // Original author: Paul Kent, July 95/96 |
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| 33 | // |
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| 34 | // -------------------------------------------------------------------- |
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| 35 | |
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| 36 | #include "G4Navigator.hh" |
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| 37 | #include "G4ios.hh" |
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| 38 | #include <iomanip> |
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| 39 | |
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| 40 | #include "G4GeometryTolerance.hh" |
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| 41 | #include "G4VPhysicalVolume.hh" |
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| 42 | |
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| 43 | // ******************************************************************** |
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| 44 | // Constructor |
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| 45 | // ******************************************************************** |
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| 46 | // |
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| 47 | G4Navigator::G4Navigator() |
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| 48 | : fWasLimitedByGeometry(false), fVerbose(0), |
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| 49 | fTopPhysical(0), fCheck(false), fPushed(false) |
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| 50 | { |
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| 51 | fActive= false; |
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| 52 | ResetStackAndState(); |
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| 53 | |
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| 54 | fActionThreshold_NoZeroSteps = 10; |
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| 55 | fAbandonThreshold_NoZeroSteps = 25; |
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| 56 | |
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| 57 | kCarTolerance = G4GeometryTolerance::GetInstance()->GetSurfaceTolerance(); |
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| 58 | fregularNav.SetNormalNavigation( &fnormalNav ); |
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| 59 | |
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| 60 | fStepEndPoint = G4ThreeVector( kInfinity, kInfinity, kInfinity ); |
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| 61 | } |
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| 62 | |
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| 63 | // ******************************************************************** |
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| 64 | // Destructor |
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| 65 | // ******************************************************************** |
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| 66 | // |
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| 67 | G4Navigator::~G4Navigator() |
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| 68 | {;} |
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| 69 | |
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| 70 | // ******************************************************************** |
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| 71 | // ResetHierarchyAndLocate |
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| 72 | // ******************************************************************** |
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| 73 | // |
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| 74 | G4VPhysicalVolume* |
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| 75 | G4Navigator::ResetHierarchyAndLocate(const G4ThreeVector &p, |
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| 76 | const G4ThreeVector &direction, |
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| 77 | const G4TouchableHistory &h) |
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| 78 | { |
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| 79 | ResetState(); |
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| 80 | fHistory = *h.GetHistory(); |
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| 81 | SetupHierarchy(); |
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| 82 | return LocateGlobalPointAndSetup(p, &direction, true, false); |
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| 83 | } |
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| 84 | |
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| 85 | // ******************************************************************** |
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| 86 | // LocateGlobalPointAndSetup |
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| 87 | // |
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| 88 | // Locate the point in the hierarchy return 0 if outside |
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| 89 | // The direction is required |
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| 90 | // - if on an edge shared by more than two surfaces |
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| 91 | // (to resolve likely looping in tracking) |
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| 92 | // - at initial location of a particle |
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| 93 | // (to resolve potential ambiguity at boundary) |
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| 94 | // |
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| 95 | // Flags on exit: (comments to be completed) |
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| 96 | // fEntering - True if entering `daughter' volume (or replica) |
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| 97 | // whether daughter of last mother directly |
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| 98 | // or daughter of that volume's ancestor. |
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| 99 | // ******************************************************************** |
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| 100 | // |
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| 101 | G4VPhysicalVolume* |
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| 102 | G4Navigator::LocateGlobalPointAndSetup( const G4ThreeVector& globalPoint, |
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| 103 | const G4ThreeVector* pGlobalDirection, |
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| 104 | const G4bool relativeSearch, |
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| 105 | const G4bool ignoreDirection ) |
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| 106 | { |
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| 107 | G4bool notKnownContained=true, noResult; |
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| 108 | G4VPhysicalVolume *targetPhysical; |
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| 109 | G4LogicalVolume *targetLogical; |
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| 110 | G4VSolid *targetSolid=0; |
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| 111 | G4ThreeVector localPoint, globalDirection; |
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| 112 | EInside insideCode; |
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| 113 | |
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| 114 | G4bool considerDirection = (!ignoreDirection) || fLocatedOnEdge; |
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| 115 | |
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| 116 | if( considerDirection && pGlobalDirection != 0 ) |
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| 117 | { |
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| 118 | globalDirection=*pGlobalDirection; |
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| 119 | } |
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| 120 | |
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| 121 | #ifdef G4DEBUG_NAVIGATION |
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| 122 | if( fVerbose > 2 ) |
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| 123 | { |
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| 124 | G4cout << "Upon entering LocateGlobalPointAndSetup():" << G4endl; |
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| 125 | G4cout << " History = " << G4endl << fHistory << G4endl << G4endl; |
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| 126 | } |
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| 127 | #endif |
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| 128 | |
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| 129 | #ifdef G4VERBOSE |
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| 130 | G4int oldcoutPrec = G4cout.precision(8); |
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| 131 | if( fVerbose > 2 ) |
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| 132 | { |
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| 133 | G4cout << "*** G4Navigator::LocateGlobalPointAndSetup: ***" << G4endl; |
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| 134 | G4cout << " Called with arguments: " << G4endl |
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| 135 | << " Globalpoint = " << globalPoint << G4endl |
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| 136 | << " RelativeSearch = " << relativeSearch << G4endl; |
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| 137 | if( fVerbose == 4 ) |
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| 138 | { |
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| 139 | G4cout << " ----- Upon entering:" << G4endl; |
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| 140 | PrintState(); |
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| 141 | } |
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| 142 | } |
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| 143 | #endif |
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| 144 | |
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| 145 | if ( !relativeSearch ) |
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| 146 | { |
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| 147 | ResetStackAndState(); |
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| 148 | } |
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| 149 | else |
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| 150 | { |
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| 151 | if ( fWasLimitedByGeometry ) |
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| 152 | { |
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| 153 | fWasLimitedByGeometry = false; |
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| 154 | fEnteredDaughter = fEntering; // Remember |
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| 155 | fExitedMother = fExiting; // Remember |
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| 156 | if ( fExiting ) |
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| 157 | { |
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| 158 | if ( fHistory.GetDepth() ) |
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| 159 | { |
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| 160 | fBlockedPhysicalVolume = fHistory.GetTopVolume(); |
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| 161 | fBlockedReplicaNo = fHistory.GetTopReplicaNo(); |
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| 162 | fHistory.BackLevel(); |
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| 163 | } |
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| 164 | else |
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| 165 | { |
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| 166 | fLastLocatedPointLocal = localPoint; |
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| 167 | fLocatedOutsideWorld = true; |
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| 168 | return 0; // Have exited world volume |
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| 169 | } |
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| 170 | // A fix for the case where a volume is "entered" at an edge |
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| 171 | // and a coincident surface exists outside it. |
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| 172 | // - This stops it from exiting further volumes and cycling |
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| 173 | // - However ReplicaNavigator treats this case itself |
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| 174 | // |
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| 175 | if ( fLocatedOnEdge && (VolumeType(fBlockedPhysicalVolume)!=kReplica )) |
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| 176 | { |
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| 177 | fExiting= false; |
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| 178 | } |
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| 179 | } |
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| 180 | else |
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| 181 | if ( fEntering ) |
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| 182 | { |
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| 183 | switch (VolumeType(fBlockedPhysicalVolume)) |
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| 184 | { |
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| 185 | case kNormal: |
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| 186 | fHistory.NewLevel(fBlockedPhysicalVolume, kNormal, |
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| 187 | fBlockedPhysicalVolume->GetCopyNo()); |
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| 188 | break; |
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| 189 | case kReplica: |
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| 190 | freplicaNav.ComputeTransformation(fBlockedReplicaNo, |
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| 191 | fBlockedPhysicalVolume); |
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| 192 | fHistory.NewLevel(fBlockedPhysicalVolume, kReplica, |
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| 193 | fBlockedReplicaNo); |
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| 194 | fBlockedPhysicalVolume->SetCopyNo(fBlockedReplicaNo); |
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| 195 | break; |
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| 196 | case kParameterised: |
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| 197 | if( fBlockedPhysicalVolume->GetRegularStructureId() != 1 ) |
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| 198 | { |
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| 199 | G4VSolid *pSolid; |
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| 200 | G4VPVParameterisation *pParam; |
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| 201 | G4TouchableHistory parentTouchable( fHistory ); |
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| 202 | pParam = fBlockedPhysicalVolume->GetParameterisation(); |
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| 203 | pSolid = pParam->ComputeSolid(fBlockedReplicaNo, |
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| 204 | fBlockedPhysicalVolume); |
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| 205 | pSolid->ComputeDimensions(pParam, fBlockedReplicaNo, |
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| 206 | fBlockedPhysicalVolume); |
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| 207 | pParam->ComputeTransformation(fBlockedReplicaNo, |
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| 208 | fBlockedPhysicalVolume); |
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| 209 | fHistory.NewLevel(fBlockedPhysicalVolume, kParameterised, |
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| 210 | fBlockedReplicaNo); |
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| 211 | fBlockedPhysicalVolume->SetCopyNo(fBlockedReplicaNo); |
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| 212 | // |
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| 213 | // Set the correct solid and material in Logical Volume |
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| 214 | // |
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| 215 | G4LogicalVolume *pLogical; |
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| 216 | pLogical = fBlockedPhysicalVolume->GetLogicalVolume(); |
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| 217 | pLogical->SetSolid( pSolid ); |
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| 218 | pLogical->UpdateMaterial(pParam -> |
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| 219 | ComputeMaterial(fBlockedReplicaNo, |
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| 220 | fBlockedPhysicalVolume, |
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| 221 | &parentTouchable)); |
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| 222 | } |
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| 223 | break; |
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| 224 | } |
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| 225 | fEntering = false; |
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| 226 | fBlockedPhysicalVolume = 0; |
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| 227 | localPoint = fHistory.GetTopTransform().TransformPoint(globalPoint); |
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| 228 | notKnownContained = false; |
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| 229 | } |
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| 230 | } |
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| 231 | else |
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| 232 | { |
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| 233 | fBlockedPhysicalVolume = 0; |
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| 234 | fEntering = false; |
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| 235 | fEnteredDaughter = false; // Full Step was not taken, did not enter |
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| 236 | fExiting = false; |
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| 237 | fExitedMother = false; // Full Step was not taken, did not exit |
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| 238 | } |
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| 239 | } |
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| 240 | // |
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| 241 | // Search from top of history up through geometry until |
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| 242 | // containing volume found: |
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| 243 | // If on |
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| 244 | // o OUTSIDE - Back up level, not/no longer exiting volumes |
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| 245 | // o SURFACE and EXITING - Back up level, setting new blocking no.s |
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| 246 | // else |
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| 247 | // o containing volume found |
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| 248 | // |
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| 249 | while (notKnownContained) |
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| 250 | { |
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| 251 | if ( fHistory.GetTopVolumeType()!=kReplica ) |
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| 252 | { |
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| 253 | targetSolid = fHistory.GetTopVolume()->GetLogicalVolume()->GetSolid(); |
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| 254 | localPoint = fHistory.GetTopTransform().TransformPoint(globalPoint); |
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| 255 | insideCode = targetSolid->Inside(localPoint); |
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| 256 | #ifdef G4VERBOSE |
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| 257 | if(( fVerbose == 1 ) && ( fCheck )) |
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| 258 | { |
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| 259 | G4String solidResponse = "-kInside-"; |
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| 260 | if (insideCode == kOutside) |
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| 261 | solidResponse = "-kOutside-"; |
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| 262 | else if (insideCode == kSurface) |
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| 263 | solidResponse = "-kSurface-"; |
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| 264 | G4cout << "*** G4Navigator::LocateGlobalPointAndSetup(): ***" << G4endl |
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| 265 | << " Invoked Inside() for solid: " << targetSolid->GetName() |
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| 266 | << ". Solid replied: " << solidResponse << G4endl |
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| 267 | << " For local point p: " << localPoint << G4endl; |
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| 268 | } |
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| 269 | #endif |
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| 270 | } |
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| 271 | else |
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| 272 | { |
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| 273 | insideCode = freplicaNav.BackLocate(fHistory, globalPoint, localPoint, |
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| 274 | fExiting, notKnownContained); |
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| 275 | // !CARE! if notKnownContained returns false then the point is within |
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| 276 | // the containing placement volume of the replica(s). If insidecode |
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| 277 | // will result in the history being backed up one level, then the |
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| 278 | // local point returned is the point in the system of this new level |
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| 279 | } |
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| 280 | if ( insideCode==kOutside ) |
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| 281 | { |
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| 282 | if ( fHistory.GetDepth() ) |
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| 283 | { |
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| 284 | fBlockedPhysicalVolume = fHistory.GetTopVolume(); |
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| 285 | fBlockedReplicaNo = fHistory.GetTopReplicaNo(); |
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| 286 | fHistory.BackLevel(); |
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| 287 | fExiting = false; |
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| 288 | } |
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| 289 | else |
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| 290 | { |
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| 291 | fLastLocatedPointLocal = localPoint; |
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| 292 | fLocatedOutsideWorld = true; |
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| 293 | return 0; // Have exited world volume |
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| 294 | } |
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| 295 | } |
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| 296 | else |
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| 297 | if ( insideCode==kSurface ) |
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| 298 | { |
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| 299 | G4bool isExiting = fExiting; |
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| 300 | if( (!fExiting)&&considerDirection ) |
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| 301 | { |
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| 302 | // Figure out whether we are exiting this level's volume |
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| 303 | // by using the direction |
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| 304 | // |
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| 305 | G4bool directionExiting = false; |
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| 306 | G4ThreeVector localDirection = |
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| 307 | fHistory.GetTopTransform().TransformAxis(globalDirection); |
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| 308 | if ( fHistory.GetTopVolumeType()!=kReplica ) |
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| 309 | { |
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| 310 | G4ThreeVector normal = targetSolid->SurfaceNormal(localPoint); |
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| 311 | directionExiting = normal.dot(localDirection) > 0.0; |
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| 312 | isExiting = isExiting || directionExiting; |
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| 313 | } |
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| 314 | } |
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| 315 | if( isExiting ) |
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| 316 | { |
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| 317 | if ( fHistory.GetDepth() ) |
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| 318 | { |
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| 319 | fBlockedPhysicalVolume = fHistory.GetTopVolume(); |
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| 320 | fBlockedReplicaNo = fHistory.GetTopReplicaNo(); |
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| 321 | fHistory.BackLevel(); |
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| 322 | // |
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| 323 | // Still on surface but exited volume not necessarily convex |
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| 324 | // |
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| 325 | fValidExitNormal = false; |
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| 326 | } |
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| 327 | else |
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| 328 | { |
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| 329 | fLastLocatedPointLocal = localPoint; |
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| 330 | fLocatedOutsideWorld = true; |
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| 331 | return 0; // Have exited world volume |
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| 332 | } |
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| 333 | } |
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| 334 | else |
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| 335 | { |
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| 336 | notKnownContained=false; |
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| 337 | } |
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| 338 | } |
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| 339 | else |
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| 340 | { |
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| 341 | notKnownContained=false; |
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| 342 | } |
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| 343 | } // END while (notKnownContained) |
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| 344 | // |
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| 345 | // Search downwards until deepest containing volume found, |
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| 346 | // blocking fBlockedPhysicalVolume/BlockedReplicaNum |
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| 347 | // |
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| 348 | // 3 Cases: |
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| 349 | // |
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| 350 | // o Parameterised daughters |
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| 351 | // =>Must be one G4PVParameterised daughter & voxels |
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| 352 | // o Positioned daughters & voxels |
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| 353 | // o Positioned daughters & no voxels |
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| 354 | |
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| 355 | noResult = true; // noResult should be renamed to |
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| 356 | // something like enteredLevel, as that is its meaning. |
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| 357 | do |
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| 358 | { |
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| 359 | // Determine `type' of current mother volume |
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| 360 | // |
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| 361 | targetPhysical = fHistory.GetTopVolume(); |
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| 362 | targetLogical = targetPhysical->GetLogicalVolume(); |
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| 363 | switch( CharacteriseDaughters(targetLogical) ) |
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| 364 | { |
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| 365 | case kNormal: |
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| 366 | if ( targetLogical->GetVoxelHeader() ) // use optimised navigation |
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| 367 | { |
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| 368 | noResult = fvoxelNav.LevelLocate(fHistory, |
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| 369 | fBlockedPhysicalVolume, |
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| 370 | fBlockedReplicaNo, |
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| 371 | globalPoint, |
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| 372 | pGlobalDirection, |
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| 373 | considerDirection, |
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| 374 | localPoint); |
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| 375 | } |
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| 376 | else // do not use optimised navigation |
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| 377 | { |
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| 378 | noResult = fnormalNav.LevelLocate(fHistory, |
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| 379 | fBlockedPhysicalVolume, |
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| 380 | fBlockedReplicaNo, |
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| 381 | globalPoint, |
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| 382 | pGlobalDirection, |
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| 383 | considerDirection, |
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| 384 | localPoint); |
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| 385 | } |
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| 386 | break; |
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| 387 | case kReplica: |
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| 388 | noResult = freplicaNav.LevelLocate(fHistory, |
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| 389 | fBlockedPhysicalVolume, |
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| 390 | fBlockedReplicaNo, |
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| 391 | globalPoint, |
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| 392 | pGlobalDirection, |
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| 393 | considerDirection, |
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| 394 | localPoint); |
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| 395 | break; |
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| 396 | case kParameterised: |
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| 397 | if( GetDaughtersRegularStructureId(targetLogical) != 1 ) |
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| 398 | { |
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| 399 | noResult = fparamNav.LevelLocate(fHistory, |
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| 400 | fBlockedPhysicalVolume, |
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| 401 | fBlockedReplicaNo, |
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| 402 | globalPoint, |
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| 403 | pGlobalDirection, |
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| 404 | considerDirection, |
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| 405 | localPoint); |
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| 406 | } |
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| 407 | else // Regular structure |
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| 408 | { |
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| 409 | noResult = fregularNav.LevelLocate(fHistory, |
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| 410 | fBlockedPhysicalVolume, |
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| 411 | fBlockedReplicaNo, |
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| 412 | globalPoint, |
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| 413 | pGlobalDirection, |
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| 414 | considerDirection, |
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| 415 | localPoint); |
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| 416 | } |
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| 417 | break; |
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| 418 | } |
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| 419 | |
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| 420 | // LevelLocate returns true if it finds a daughter volume |
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| 421 | // in which globalPoint is inside (or on the surface). |
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| 422 | |
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| 423 | if ( noResult ) |
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| 424 | { |
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| 425 | // Entering a daughter after ascending |
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| 426 | // |
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| 427 | // The blocked volume is no longer valid - it was for another level |
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| 428 | // |
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| 429 | fBlockedPhysicalVolume = 0; |
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| 430 | fBlockedReplicaNo = -1; |
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| 431 | |
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| 432 | // fEntering should be false -- else blockedVolume is assumed good. |
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| 433 | // fEnteredDaughter is used for ExitNormal |
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| 434 | // |
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| 435 | fEntering = false; |
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| 436 | fEnteredDaughter = true; |
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| 437 | #ifdef G4DEBUG_NAVIGATION |
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| 438 | if( fVerbose > 2 ) |
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| 439 | { |
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| 440 | G4VPhysicalVolume* enteredPhysical = fHistory.GetTopVolume(); |
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| 441 | G4cout << "*** G4Navigator::LocateGlobalPointAndSetup() ***" << G4endl; |
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| 442 | G4cout << " Entering volume: " << enteredPhysical->GetName() |
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| 443 | << G4endl; |
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| 444 | } |
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| 445 | #endif |
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| 446 | } |
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| 447 | } while (noResult); |
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| 448 | |
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| 449 | fLastLocatedPointLocal = localPoint; |
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| 450 | |
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| 451 | #ifdef G4VERBOSE |
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| 452 | if( fVerbose == 4 ) |
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| 453 | { |
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| 454 | G4cout.precision(6); |
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| 455 | G4String curPhysVol_Name("None"); |
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| 456 | if (targetPhysical!=0) |
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| 457 | { |
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| 458 | curPhysVol_Name = targetPhysical->GetName(); |
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| 459 | } |
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| 460 | G4cout << " Return value = new volume = " << curPhysVol_Name << G4endl; |
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| 461 | G4cout << " ----- Upon exiting:" << G4endl; |
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| 462 | PrintState(); |
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| 463 | #ifdef G4DEBUG_NAVIGATION |
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| 464 | G4cout << "Upon exiting LocateGlobalPointAndSetup():" << G4endl; |
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| 465 | G4cout << " History = " << G4endl << fHistory << G4endl << G4endl; |
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| 466 | #endif |
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| 467 | } |
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| 468 | G4cout.precision(oldcoutPrec); |
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| 469 | #endif |
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| 470 | |
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| 471 | fLocatedOutsideWorld= false; |
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| 472 | |
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| 473 | return targetPhysical; |
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| 474 | } |
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| 475 | |
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| 476 | // ******************************************************************** |
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| 477 | // LocateGlobalPointWithinVolume |
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| 478 | // |
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| 479 | // -> the state information of this Navigator and its subNavigators |
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| 480 | // is updated in order to start the next step at pGlobalpoint |
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| 481 | // -> no check is performed whether pGlobalpoint is inside the |
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| 482 | // original volume (this must be the case). |
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| 483 | // |
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| 484 | // Note: a direction could be added to the arguments, to aid in future |
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| 485 | // optional checking (via the old code below, flagged by OLD_LOCATE). |
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| 486 | // [ This would be done only in verbose mode ] |
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| 487 | // ******************************************************************** |
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| 488 | // |
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| 489 | void |
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| 490 | G4Navigator::LocateGlobalPointWithinVolume(const G4ThreeVector& pGlobalpoint) |
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| 491 | { |
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| 492 | fLastLocatedPointLocal = ComputeLocalPoint(pGlobalpoint); |
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| 493 | |
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| 494 | #ifdef G4DEBUG_NAVIGATION |
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| 495 | if( fVerbose > 2 ) |
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| 496 | { |
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| 497 | G4cout << "Entering LocateGlobalWithinVolume(): History = " << G4endl; |
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| 498 | G4cout << fHistory << G4endl; |
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| 499 | } |
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| 500 | #endif |
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| 501 | |
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| 502 | // For the case of Voxel (or Parameterised) volume the respective |
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| 503 | // Navigator must be messaged to update its voxel information etc |
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| 504 | |
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| 505 | // Update the state of the Sub Navigators |
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| 506 | // - in particular any voxel information they store/cache |
---|
| 507 | // |
---|
| 508 | G4VPhysicalVolume* motherPhysical = fHistory.GetTopVolume(); |
---|
| 509 | G4LogicalVolume* motherLogical = motherPhysical->GetLogicalVolume(); |
---|
| 510 | G4SmartVoxelHeader* pVoxelHeader = motherLogical->GetVoxelHeader(); |
---|
| 511 | |
---|
| 512 | if ( fHistory.GetTopVolumeType()!=kReplica ) |
---|
| 513 | { |
---|
| 514 | switch( CharacteriseDaughters(motherLogical) ) |
---|
| 515 | { |
---|
| 516 | case kNormal: |
---|
| 517 | if ( pVoxelHeader ) |
---|
| 518 | { |
---|
| 519 | fvoxelNav.VoxelLocate( pVoxelHeader, fLastLocatedPointLocal ); |
---|
| 520 | } |
---|
| 521 | break; |
---|
| 522 | case kParameterised: |
---|
| 523 | if( GetDaughtersRegularStructureId(motherLogical) != 1 ) |
---|
| 524 | { |
---|
| 525 | // Resets state & returns voxel node |
---|
| 526 | // |
---|
| 527 | fparamNav.ParamVoxelLocate( pVoxelHeader, fLastLocatedPointLocal ); |
---|
| 528 | } |
---|
| 529 | break; |
---|
| 530 | case kReplica: |
---|
| 531 | G4Exception("G4Navigator::LocateGlobalPointWithinVolume()", |
---|
| 532 | "NotApplicable", FatalException, |
---|
| 533 | "Not applicable for replicated volumes."); |
---|
| 534 | break; |
---|
| 535 | } |
---|
| 536 | } |
---|
| 537 | |
---|
| 538 | // Reset the state variables |
---|
| 539 | // - which would have been affected |
---|
| 540 | // by the 'equivalent' call to LocateGlobalPointAndSetup |
---|
| 541 | // - who's values have been invalidated by the 'move'. |
---|
| 542 | // |
---|
| 543 | fBlockedPhysicalVolume = 0; |
---|
| 544 | fBlockedReplicaNo = -1; |
---|
| 545 | fEntering = false; |
---|
| 546 | fEnteredDaughter = false; // Boundary not encountered, did not enter |
---|
| 547 | fExiting = false; |
---|
| 548 | fExitedMother = false; // Boundary not encountered, did not exit |
---|
| 549 | } |
---|
| 550 | |
---|
| 551 | // ******************************************************************** |
---|
| 552 | // SetSavedState |
---|
| 553 | // |
---|
| 554 | // Save the state, in case this is a parasitic call |
---|
| 555 | // Save fValidExitNormal, fExitNormal, fExiting, fEntering, |
---|
| 556 | // fBlockedPhysicalVolume, fBlockedReplicaNo, fLastStepWasZero; |
---|
| 557 | // ******************************************************************** |
---|
| 558 | // |
---|
| 559 | void G4Navigator::SetSavedState() |
---|
| 560 | { |
---|
| 561 | // fSaveExitNormal = fExitNormal; |
---|
| 562 | fSaveState.sExitNormal = fExitNormal; |
---|
| 563 | fSaveState.sValidExitNormal = fValidExitNormal; |
---|
| 564 | fSaveState.sExiting = fExiting; |
---|
| 565 | fSaveState.sEntering = fEntering; |
---|
| 566 | |
---|
| 567 | fSaveState.spBlockedPhysicalVolume = fBlockedPhysicalVolume; |
---|
| 568 | fSaveState.sBlockedReplicaNo = fBlockedReplicaNo, |
---|
| 569 | |
---|
| 570 | fSaveState.sLastStepWasZero = fLastStepWasZero; |
---|
| 571 | } |
---|
| 572 | |
---|
| 573 | // ******************************************************************** |
---|
| 574 | // RestoreSavedState |
---|
| 575 | // |
---|
| 576 | // Restore the state (in Compute Step), in case this is a parasitic call |
---|
| 577 | // ******************************************************************** |
---|
| 578 | // |
---|
| 579 | void G4Navigator::RestoreSavedState() |
---|
| 580 | { |
---|
| 581 | fExitNormal = fSaveState.sExitNormal; |
---|
| 582 | fValidExitNormal = fSaveState.sValidExitNormal; |
---|
| 583 | fExiting = fSaveState.sExiting; |
---|
| 584 | fEntering = fSaveState.sEntering; |
---|
| 585 | |
---|
| 586 | fBlockedPhysicalVolume = fSaveState.spBlockedPhysicalVolume; |
---|
| 587 | fBlockedReplicaNo = fSaveState.sBlockedReplicaNo, |
---|
| 588 | |
---|
| 589 | fLastStepWasZero = fSaveState.sLastStepWasZero; |
---|
| 590 | } |
---|
| 591 | |
---|
| 592 | // ******************************************************************** |
---|
| 593 | // ComputeStep |
---|
| 594 | // |
---|
| 595 | // Computes the next geometric Step: intersections with current |
---|
| 596 | // mother and `daughter' volumes. |
---|
| 597 | // |
---|
| 598 | // NOTE: |
---|
| 599 | // |
---|
| 600 | // Flags on entry: |
---|
| 601 | // -------------- |
---|
| 602 | // fValidExitNormal - Normal of exited volume is valid (convex, not a |
---|
| 603 | // coincident boundary) |
---|
| 604 | // fExitNormal - Surface normal of exited volume |
---|
| 605 | // fExiting - True if have exited solid |
---|
| 606 | // |
---|
| 607 | // fBlockedPhysicalVolume - Ptr to exited volume (or 0) |
---|
| 608 | // fBlockedReplicaNo - Replication no of exited volume |
---|
| 609 | // fLastStepWasZero - True if last Step size was zero. |
---|
| 610 | // |
---|
| 611 | // Flags on exit: |
---|
| 612 | // ------------- |
---|
| 613 | // fValidExitNormal - True if surface normal of exited volume is valid |
---|
| 614 | // fExitNormal - Surface normal of exited volume rotated to mothers |
---|
| 615 | // reference system |
---|
| 616 | // fExiting - True if exiting mother |
---|
| 617 | // fEntering - True if entering `daughter' volume (or replica) |
---|
| 618 | // fBlockedPhysicalVolume - Ptr to candidate (entered) volume |
---|
| 619 | // fBlockedReplicaNo - Replication no of candidate (entered) volume |
---|
| 620 | // fLastStepWasZero - True if this Step size was zero. |
---|
| 621 | // ******************************************************************** |
---|
| 622 | // |
---|
| 623 | G4double G4Navigator::ComputeStep( const G4ThreeVector &pGlobalpoint, |
---|
| 624 | const G4ThreeVector &pDirection, |
---|
| 625 | const G4double pCurrentProposedStepLength, |
---|
| 626 | G4double &pNewSafety) |
---|
| 627 | { |
---|
| 628 | G4ThreeVector localDirection = ComputeLocalAxis(pDirection); |
---|
| 629 | G4double Step = DBL_MAX; |
---|
| 630 | G4VPhysicalVolume *motherPhysical = fHistory.GetTopVolume(); |
---|
| 631 | G4LogicalVolume *motherLogical = motherPhysical->GetLogicalVolume(); |
---|
| 632 | |
---|
| 633 | static G4int sNavCScalls=0; |
---|
| 634 | sNavCScalls++; |
---|
| 635 | |
---|
| 636 | #ifdef G4VERBOSE |
---|
| 637 | G4int oldcoutPrec= G4cout.precision(8); |
---|
| 638 | G4int oldcerrPrec= G4cerr.precision(10); |
---|
| 639 | if( fVerbose > 0 ) |
---|
| 640 | { |
---|
| 641 | G4cout << "*** G4Navigator::ComputeStep: ***" << G4endl; |
---|
| 642 | G4cout << " Volume = " << motherPhysical->GetName() |
---|
| 643 | << " - Proposed step length = " << pCurrentProposedStepLength |
---|
| 644 | << G4endl; |
---|
| 645 | #ifdef G4DEBUG_NAVIGATION |
---|
| 646 | if( fVerbose >= 4 ) |
---|
| 647 | { |
---|
| 648 | G4cout << " Called with the arguments: " << G4endl |
---|
| 649 | << " Globalpoint = " << std::setw(25) << pGlobalpoint << G4endl |
---|
| 650 | << " Direction = " << std::setw(25) << pDirection << G4endl; |
---|
| 651 | G4cout << " ---- Upon entering :" << G4endl; |
---|
| 652 | PrintState(); |
---|
| 653 | } |
---|
| 654 | #endif |
---|
| 655 | } |
---|
| 656 | |
---|
| 657 | static G4double fAccuracyForWarning = kCarTolerance, |
---|
| 658 | fAccuracyForException = 1000*kCarTolerance; |
---|
| 659 | #endif |
---|
| 660 | |
---|
| 661 | G4ThreeVector newLocalPoint = ComputeLocalPoint(pGlobalpoint); |
---|
| 662 | if( newLocalPoint != fLastLocatedPointLocal ) |
---|
| 663 | { |
---|
| 664 | // Check whether the relocation is within safety |
---|
| 665 | // |
---|
| 666 | G4ThreeVector oldLocalPoint = fLastLocatedPointLocal; |
---|
| 667 | G4double moveLenSq = (newLocalPoint-oldLocalPoint).mag2(); |
---|
| 668 | |
---|
| 669 | if ( moveLenSq >= kCarTolerance*kCarTolerance ) |
---|
| 670 | { |
---|
| 671 | #ifdef G4VERBOSE |
---|
| 672 | // The following checks only make sense if the move is larger |
---|
| 673 | // than the tolerance. |
---|
| 674 | // |
---|
| 675 | G4ThreeVector OriginalGlobalpoint = |
---|
| 676 | fHistory.GetTopTransform().Inverse(). |
---|
| 677 | TransformPoint(fLastLocatedPointLocal); |
---|
| 678 | |
---|
| 679 | G4double shiftOriginSafSq = (fPreviousSftOrigin-pGlobalpoint).mag2(); |
---|
| 680 | |
---|
| 681 | // Check that the starting point of this step is |
---|
| 682 | // within the isotropic safety sphere of the last point |
---|
| 683 | // to a accuracy/precision given by fAccuracyForWarning. |
---|
| 684 | // If so give warning. |
---|
| 685 | // If it fails by more than fAccuracyForException exit with error. |
---|
| 686 | // |
---|
| 687 | if( shiftOriginSafSq >= sqr(fPreviousSafety) ) |
---|
| 688 | { |
---|
| 689 | G4double shiftOrigin = std::sqrt(shiftOriginSafSq); |
---|
| 690 | G4double diffShiftSaf = shiftOrigin - fPreviousSafety; |
---|
| 691 | |
---|
| 692 | if( diffShiftSaf > fAccuracyForWarning ) |
---|
| 693 | { |
---|
| 694 | G4Exception("G4Navigator::ComputeStep()", |
---|
| 695 | "UnexpectedPositionShift", JustWarning, |
---|
| 696 | "Accuracy ERROR or slightly inaccurate position shift."); |
---|
| 697 | G4cerr << " The Step's starting point has moved " |
---|
| 698 | << std::sqrt(moveLenSq)/mm << " mm " << G4endl |
---|
| 699 | << " since the last call to a Locate method." << G4endl; |
---|
| 700 | G4cerr << " This has resulted in moving " |
---|
| 701 | << shiftOrigin/mm << " mm " |
---|
| 702 | << " from the last point at which the safety " |
---|
| 703 | << " was calculated " << G4endl; |
---|
| 704 | G4cerr << " which is more than the computed safety= " |
---|
| 705 | << fPreviousSafety/mm << " mm at that point." << G4endl; |
---|
| 706 | G4cerr << " This difference is " |
---|
| 707 | << diffShiftSaf/mm << " mm." << G4endl |
---|
| 708 | << " The tolerated accuracy is " |
---|
| 709 | << fAccuracyForException/mm << " mm." << G4endl; |
---|
| 710 | |
---|
| 711 | static G4int warnNow = 0; |
---|
| 712 | if( ((++warnNow % 100) == 1) ) |
---|
| 713 | { |
---|
| 714 | G4cerr << " This problem can be due to either " << G4endl; |
---|
| 715 | G4cerr << " - a process that has proposed a displacement" |
---|
| 716 | << " larger than the current safety , or" << G4endl; |
---|
| 717 | G4cerr << " - inaccuracy in the computation of the safety" |
---|
| 718 | << G4endl; |
---|
| 719 | G4cerr << " We suggest that you " << G4endl |
---|
| 720 | << " - find i) what particle is being tracked, and " |
---|
| 721 | << " ii) through what part of your geometry " << G4endl |
---|
| 722 | << " for example by re-running this event with " |
---|
| 723 | << G4endl |
---|
| 724 | << " /tracking/verbose 1 " << G4endl |
---|
| 725 | << " - check which processes you declare for" |
---|
| 726 | << " this particle (and look at non-standard ones)" |
---|
| 727 | << G4endl |
---|
| 728 | << " - in case, create a detailed logfile" |
---|
| 729 | << " of this event using:" << G4endl |
---|
| 730 | << " /tracking/verbose 6 " |
---|
| 731 | << G4endl; |
---|
| 732 | } |
---|
| 733 | } |
---|
| 734 | #ifdef G4DEBUG_NAVIGATION |
---|
| 735 | else |
---|
| 736 | { |
---|
| 737 | G4cerr << "WARNING - G4Navigator::ComputeStep()" << G4endl |
---|
| 738 | << " The Step's starting point has moved " |
---|
| 739 | << std::sqrt(moveLenSq) << "," << G4endl |
---|
| 740 | << " which has taken it to the limit of" |
---|
| 741 | << " the current safety. " << G4endl; |
---|
| 742 | } |
---|
| 743 | #endif |
---|
| 744 | } |
---|
| 745 | G4double safetyPlus = fPreviousSafety + fAccuracyForException; |
---|
| 746 | if ( shiftOriginSafSq > sqr(safetyPlus) ) |
---|
| 747 | { |
---|
| 748 | G4cerr << "ERROR - G4Navigator::ComputeStep()" << G4endl |
---|
| 749 | << " Position has shifted considerably without" |
---|
| 750 | << " notifying the navigator !" << G4endl |
---|
| 751 | << " Tolerated safety: " << safetyPlus << G4endl |
---|
| 752 | << " Computed shift : " << shiftOriginSafSq << G4endl; |
---|
| 753 | G4Exception("G4Navigator::ComputeStep()", |
---|
| 754 | "SignificantPositionShift", JustWarning, |
---|
| 755 | "May lead to a crash or unreliable results."); |
---|
| 756 | } |
---|
| 757 | #endif // end G4VERBOSE |
---|
| 758 | |
---|
| 759 | // Relocate the point within the same volume |
---|
| 760 | // |
---|
| 761 | LocateGlobalPointWithinVolume( pGlobalpoint ); |
---|
| 762 | } |
---|
| 763 | } |
---|
| 764 | if ( fHistory.GetTopVolumeType()!=kReplica ) |
---|
| 765 | { |
---|
| 766 | switch( CharacteriseDaughters(motherLogical) ) |
---|
| 767 | { |
---|
| 768 | case kNormal: |
---|
| 769 | if ( motherLogical->GetVoxelHeader() ) |
---|
| 770 | { |
---|
| 771 | Step = fvoxelNav.ComputeStep(fLastLocatedPointLocal, |
---|
| 772 | localDirection, |
---|
| 773 | pCurrentProposedStepLength, |
---|
| 774 | pNewSafety, |
---|
| 775 | fHistory, |
---|
| 776 | fValidExitNormal, |
---|
| 777 | fExitNormal, |
---|
| 778 | fExiting, |
---|
| 779 | fEntering, |
---|
| 780 | &fBlockedPhysicalVolume, |
---|
| 781 | fBlockedReplicaNo); |
---|
| 782 | |
---|
| 783 | } |
---|
| 784 | else |
---|
| 785 | { |
---|
| 786 | if( motherPhysical->GetRegularStructureId() != 1 ) |
---|
| 787 | { |
---|
| 788 | Step = fnormalNav.ComputeStep(fLastLocatedPointLocal, |
---|
| 789 | localDirection, |
---|
| 790 | pCurrentProposedStepLength, |
---|
| 791 | pNewSafety, |
---|
| 792 | fHistory, |
---|
| 793 | fValidExitNormal, |
---|
| 794 | fExitNormal, |
---|
| 795 | fExiting, |
---|
| 796 | fEntering, |
---|
| 797 | &fBlockedPhysicalVolume, |
---|
| 798 | fBlockedReplicaNo); |
---|
| 799 | } |
---|
| 800 | else // Regular (non-voxelised) structure |
---|
| 801 | { |
---|
| 802 | LocateGlobalPointAndSetup( pGlobalpoint, &pDirection, true, true ); |
---|
| 803 | // |
---|
| 804 | // if physical process limits the step, the voxel will not be the |
---|
| 805 | // one given by ComputeStepSkippingEqualMaterials() and the local |
---|
| 806 | // point will be wrongly calculated. |
---|
| 807 | |
---|
| 808 | // There is a problem: when msc limits the step and the point is |
---|
| 809 | // assigned wrongly to phantom in previous step (while it is out |
---|
| 810 | // of the container volume). Then LocateGlobalPointAndSetup() has |
---|
| 811 | // reset the history topvolume to world. |
---|
| 812 | // |
---|
| 813 | if(fHistory.GetTopVolume()->GetRegularStructureId() != 1 ) |
---|
| 814 | { |
---|
| 815 | G4Exception("G4Navigator::ComputeStep()", |
---|
| 816 | "Bad-location-of-point", JustWarning, |
---|
| 817 | "Point is relocated in voxels, while it should be outside!"); |
---|
| 818 | Step = fnormalNav.ComputeStep(fLastLocatedPointLocal, |
---|
| 819 | localDirection, |
---|
| 820 | pCurrentProposedStepLength, |
---|
| 821 | pNewSafety, |
---|
| 822 | fHistory, |
---|
| 823 | fValidExitNormal, |
---|
| 824 | fExitNormal, |
---|
| 825 | fExiting, |
---|
| 826 | fEntering, |
---|
| 827 | &fBlockedPhysicalVolume, |
---|
| 828 | fBlockedReplicaNo); |
---|
| 829 | } |
---|
| 830 | else |
---|
| 831 | { |
---|
| 832 | Step = fregularNav. |
---|
| 833 | ComputeStepSkippingEqualMaterials(fLastLocatedPointLocal, |
---|
| 834 | localDirection, |
---|
| 835 | pCurrentProposedStepLength, |
---|
| 836 | pNewSafety, |
---|
| 837 | fHistory, |
---|
| 838 | fValidExitNormal, |
---|
| 839 | fExitNormal, |
---|
| 840 | fExiting, |
---|
| 841 | fEntering, |
---|
| 842 | &fBlockedPhysicalVolume, |
---|
| 843 | fBlockedReplicaNo, |
---|
| 844 | motherPhysical); |
---|
| 845 | } |
---|
| 846 | } |
---|
| 847 | } |
---|
| 848 | break; |
---|
| 849 | case kParameterised: |
---|
| 850 | if( GetDaughtersRegularStructureId(motherLogical) != 1 ) |
---|
| 851 | { |
---|
| 852 | Step = fparamNav.ComputeStep(fLastLocatedPointLocal, |
---|
| 853 | localDirection, |
---|
| 854 | pCurrentProposedStepLength, |
---|
| 855 | pNewSafety, |
---|
| 856 | fHistory, |
---|
| 857 | fValidExitNormal, |
---|
| 858 | fExitNormal, |
---|
| 859 | fExiting, |
---|
| 860 | fEntering, |
---|
| 861 | &fBlockedPhysicalVolume, |
---|
| 862 | fBlockedReplicaNo); |
---|
| 863 | } |
---|
| 864 | else // Regular structure |
---|
| 865 | { |
---|
| 866 | Step = fregularNav.ComputeStep(fLastLocatedPointLocal, |
---|
| 867 | localDirection, |
---|
| 868 | pCurrentProposedStepLength, |
---|
| 869 | pNewSafety, |
---|
| 870 | fHistory, |
---|
| 871 | fValidExitNormal, |
---|
| 872 | fExitNormal, |
---|
| 873 | fExiting, |
---|
| 874 | fEntering, |
---|
| 875 | &fBlockedPhysicalVolume, |
---|
| 876 | fBlockedReplicaNo); |
---|
| 877 | } |
---|
| 878 | break; |
---|
| 879 | case kReplica: |
---|
| 880 | G4Exception("G4Navigator::ComputeStep()", "NotApplicable", |
---|
| 881 | FatalException, "Not applicable for replicated volumes."); |
---|
| 882 | break; |
---|
| 883 | } |
---|
| 884 | } |
---|
| 885 | else |
---|
| 886 | { |
---|
| 887 | // In the case of a replica, it must handle the exiting |
---|
| 888 | // edge/corner problem by itself |
---|
| 889 | // |
---|
| 890 | G4bool exitingReplica = fExitedMother; |
---|
| 891 | Step = freplicaNav.ComputeStep(pGlobalpoint, |
---|
| 892 | pDirection, |
---|
| 893 | fLastLocatedPointLocal, |
---|
| 894 | localDirection, |
---|
| 895 | pCurrentProposedStepLength, |
---|
| 896 | pNewSafety, |
---|
| 897 | fHistory, |
---|
| 898 | fValidExitNormal, |
---|
| 899 | fExitNormal, |
---|
| 900 | exitingReplica, |
---|
| 901 | fEntering, |
---|
| 902 | &fBlockedPhysicalVolume, |
---|
| 903 | fBlockedReplicaNo); |
---|
| 904 | fExiting= exitingReplica; // still ok to set it ?? |
---|
| 905 | } |
---|
| 906 | |
---|
| 907 | // Remember last safety origin & value. |
---|
| 908 | // |
---|
| 909 | fPreviousSftOrigin = pGlobalpoint; |
---|
| 910 | fPreviousSafety = pNewSafety; |
---|
| 911 | |
---|
| 912 | // Count zero steps - one can occur due to changing momentum at a boundary |
---|
| 913 | // - one, two (or a few) can occur at common edges between |
---|
| 914 | // volumes |
---|
| 915 | // - more than two is likely a problem in the geometry |
---|
| 916 | // description or the Navigation |
---|
| 917 | |
---|
| 918 | // Rule of thumb: likely at an Edge if two consecutive steps are zero, |
---|
| 919 | // because at least two candidate volumes must have been |
---|
| 920 | // checked |
---|
| 921 | // |
---|
| 922 | fLocatedOnEdge = fLastStepWasZero && (Step==0.0); |
---|
| 923 | fLastStepWasZero = (Step==0.0); |
---|
| 924 | if (fPushed) fPushed = fLastStepWasZero; |
---|
| 925 | |
---|
| 926 | // Handle large number of consecutive zero steps |
---|
| 927 | // |
---|
| 928 | if ( fLastStepWasZero ) |
---|
| 929 | { |
---|
| 930 | fNumberZeroSteps++; |
---|
| 931 | #ifdef G4DEBUG_NAVIGATION |
---|
| 932 | if( fNumberZeroSteps > 1 ) |
---|
| 933 | { |
---|
| 934 | G4cout << "G4Navigator::ComputeStep(): another zero step, # " |
---|
| 935 | << fNumberZeroSteps |
---|
| 936 | << " at " << pGlobalpoint |
---|
| 937 | << " in volume " << motherPhysical->GetName() |
---|
| 938 | << " nav-comp-step calls # " << sNavCScalls |
---|
| 939 | << G4endl; |
---|
| 940 | } |
---|
| 941 | #endif |
---|
| 942 | if( fNumberZeroSteps > fActionThreshold_NoZeroSteps-1 ) |
---|
| 943 | { |
---|
| 944 | // Act to recover this stuck track. Pushing it along direction |
---|
| 945 | // |
---|
| 946 | Step += 0.9*kCarTolerance; |
---|
| 947 | #ifdef G4VERBOSE |
---|
| 948 | if (!fPushed) |
---|
| 949 | { |
---|
| 950 | G4cerr << "WARNING - G4Navigator::ComputeStep()" << G4endl |
---|
| 951 | << " Track stuck, not moving for " |
---|
| 952 | << fNumberZeroSteps << " steps" << G4endl |
---|
| 953 | << " in volume -" << motherPhysical->GetName() |
---|
| 954 | << "- at point " << pGlobalpoint << G4endl |
---|
| 955 | << " direction: " << pDirection << "." << G4endl |
---|
| 956 | << " Potential geometry or navigation problem !" |
---|
| 957 | << G4endl |
---|
| 958 | << " Trying pushing it of " << Step << " mm ..." |
---|
| 959 | << G4endl; |
---|
| 960 | } |
---|
| 961 | #endif |
---|
| 962 | fPushed = true; |
---|
| 963 | } |
---|
| 964 | if( fNumberZeroSteps > fAbandonThreshold_NoZeroSteps-1 ) |
---|
| 965 | { |
---|
| 966 | // Must kill this stuck track |
---|
| 967 | // |
---|
| 968 | G4cerr << "ERROR - G4Navigator::ComputeStep()" << G4endl |
---|
| 969 | << " Track stuck, not moving for " |
---|
| 970 | << fNumberZeroSteps << " steps" << G4endl |
---|
| 971 | << " in volume -" << motherPhysical->GetName() |
---|
| 972 | << "- at point " << pGlobalpoint << G4endl |
---|
| 973 | << " direction: " << pDirection << "." << G4endl; |
---|
| 974 | motherPhysical->CheckOverlaps(5000, false); |
---|
| 975 | G4Exception("G4Navigator::ComputeStep()", |
---|
| 976 | "StuckTrack", EventMustBeAborted, |
---|
| 977 | "Stuck Track: potential geometry or navigation problem."); |
---|
| 978 | } |
---|
| 979 | } |
---|
| 980 | else |
---|
| 981 | { |
---|
| 982 | if (!fPushed) fNumberZeroSteps = 0; |
---|
| 983 | } |
---|
| 984 | |
---|
| 985 | fEnteredDaughter = fEntering; // I expect to enter a volume in this Step |
---|
| 986 | fExitedMother = fExiting; |
---|
| 987 | |
---|
| 988 | if( fExiting ) |
---|
| 989 | { |
---|
| 990 | #ifdef G4DEBUG_NAVIGATION |
---|
| 991 | if( fVerbose > 2 ) |
---|
| 992 | { |
---|
| 993 | G4cout << " At G4Nav CompStep End - if(exiting) - fExiting= " << fExiting |
---|
| 994 | << " fValidExitNormal = " << fValidExitNormal << G4endl; |
---|
| 995 | G4cout << " fExitNormal= " << fExitNormal << G4endl; |
---|
| 996 | } |
---|
| 997 | #endif |
---|
| 998 | |
---|
| 999 | if(fValidExitNormal) |
---|
| 1000 | { |
---|
| 1001 | // Convention: fExitNormal is in the 'grand-mother' coordinate system |
---|
| 1002 | // |
---|
| 1003 | fGrandMotherExitNormal= fExitNormal; |
---|
| 1004 | } |
---|
| 1005 | else |
---|
| 1006 | { |
---|
| 1007 | // We must calculate the normal anyway (in order to have it if requested) |
---|
| 1008 | // |
---|
| 1009 | G4ThreeVector finalLocalPoint = |
---|
| 1010 | fLastLocatedPointLocal + localDirection*Step; |
---|
| 1011 | |
---|
| 1012 | // Now fGrandMotherExitNormal is in the 'grand-mother' coordinate system |
---|
| 1013 | // |
---|
| 1014 | fGrandMotherExitNormal = |
---|
| 1015 | motherLogical->GetSolid()->SurfaceNormal(finalLocalPoint); |
---|
| 1016 | |
---|
| 1017 | const G4RotationMatrix* mRot = motherPhysical->GetRotation(); |
---|
| 1018 | if( mRot ) |
---|
| 1019 | { |
---|
| 1020 | fGrandMotherExitNormal *= (*mRot); |
---|
| 1021 | } |
---|
| 1022 | } |
---|
| 1023 | } |
---|
| 1024 | fStepEndPoint= pGlobalpoint+Step*pDirection; |
---|
| 1025 | |
---|
| 1026 | if( (Step == pCurrentProposedStepLength) && (!fExiting) && (!fEntering) ) |
---|
| 1027 | { |
---|
| 1028 | // This if Step is not really limited by the geometry. |
---|
| 1029 | // The Navigator is obliged to return "infinity" |
---|
| 1030 | // |
---|
| 1031 | Step = kInfinity; |
---|
| 1032 | } |
---|
| 1033 | |
---|
| 1034 | #ifdef G4VERBOSE |
---|
| 1035 | if( fVerbose > 1 ) |
---|
| 1036 | { |
---|
| 1037 | if( fVerbose >= 4 ) |
---|
| 1038 | { |
---|
| 1039 | G4cout << " ----- Upon exiting :" << G4endl; |
---|
| 1040 | PrintState(); |
---|
| 1041 | } |
---|
| 1042 | G4cout <<" Returned step = " << Step << G4endl; |
---|
| 1043 | if( Step == kInfinity ) |
---|
| 1044 | { |
---|
| 1045 | G4cout << " Original proposed step = " |
---|
| 1046 | << pCurrentProposedStepLength << G4endl; |
---|
| 1047 | } |
---|
| 1048 | G4cout << " Safety = " << pNewSafety << G4endl; |
---|
| 1049 | } |
---|
| 1050 | G4cout.precision(oldcoutPrec); |
---|
| 1051 | G4cerr.precision(oldcerrPrec); |
---|
| 1052 | #endif |
---|
| 1053 | |
---|
| 1054 | return Step; |
---|
| 1055 | } |
---|
| 1056 | |
---|
| 1057 | // ******************************************************************** |
---|
| 1058 | // CheckNextStep |
---|
| 1059 | // |
---|
| 1060 | // Compute the step without altering the navigator state |
---|
| 1061 | // ******************************************************************** |
---|
| 1062 | // |
---|
| 1063 | G4double G4Navigator::CheckNextStep( const G4ThreeVector& pGlobalpoint, |
---|
| 1064 | const G4ThreeVector& pDirection, |
---|
| 1065 | const G4double pCurrentProposedStepLength, |
---|
| 1066 | G4double& pNewSafety) |
---|
| 1067 | { |
---|
| 1068 | G4double step; |
---|
| 1069 | |
---|
| 1070 | // Save the state, for this parasitic call |
---|
| 1071 | // |
---|
| 1072 | SetSavedState(); |
---|
| 1073 | |
---|
| 1074 | step = ComputeStep ( pGlobalpoint, |
---|
| 1075 | pDirection, |
---|
| 1076 | pCurrentProposedStepLength, |
---|
| 1077 | pNewSafety ); |
---|
| 1078 | |
---|
| 1079 | // If a parasitic call, then attempt to restore the key parts of the state |
---|
| 1080 | // |
---|
| 1081 | RestoreSavedState(); |
---|
| 1082 | |
---|
| 1083 | return step; |
---|
| 1084 | } |
---|
| 1085 | |
---|
| 1086 | // ******************************************************************** |
---|
| 1087 | // ResetState |
---|
| 1088 | // |
---|
| 1089 | // Resets stack and minimum of navigator state `machine' |
---|
| 1090 | // ******************************************************************** |
---|
| 1091 | // |
---|
| 1092 | void G4Navigator::ResetState() |
---|
| 1093 | { |
---|
| 1094 | fWasLimitedByGeometry = false; |
---|
| 1095 | fEntering = false; |
---|
| 1096 | fExiting = false; |
---|
| 1097 | fLocatedOnEdge = false; |
---|
| 1098 | fLastStepWasZero = false; |
---|
| 1099 | fEnteredDaughter = false; |
---|
| 1100 | fExitedMother = false; |
---|
| 1101 | fPushed = false; |
---|
| 1102 | |
---|
| 1103 | fValidExitNormal = false; |
---|
| 1104 | fExitNormal = G4ThreeVector(0,0,0); |
---|
| 1105 | |
---|
| 1106 | fPreviousSftOrigin = G4ThreeVector(0,0,0); |
---|
| 1107 | fPreviousSafety = 0.0; |
---|
| 1108 | |
---|
| 1109 | fNumberZeroSteps = 0; |
---|
| 1110 | |
---|
| 1111 | fBlockedPhysicalVolume = 0; |
---|
| 1112 | fBlockedReplicaNo = -1; |
---|
| 1113 | |
---|
| 1114 | fLastLocatedPointLocal = G4ThreeVector( DBL_MAX, -DBL_MAX, 0.0 ); |
---|
| 1115 | fLocatedOutsideWorld = false; |
---|
| 1116 | } |
---|
| 1117 | |
---|
| 1118 | // ******************************************************************** |
---|
| 1119 | // SetupHierarchy |
---|
| 1120 | // |
---|
| 1121 | // Renavigates & resets hierarchy described by current history |
---|
| 1122 | // o Reset volumes |
---|
| 1123 | // o Recompute transforms and/or solids of replicated/parameterised volumes |
---|
| 1124 | // ******************************************************************** |
---|
| 1125 | // |
---|
| 1126 | void G4Navigator::SetupHierarchy() |
---|
| 1127 | { |
---|
| 1128 | G4int i; |
---|
| 1129 | const G4int cdepth = fHistory.GetDepth(); |
---|
| 1130 | G4VPhysicalVolume *mother, *current; |
---|
| 1131 | G4VSolid *pSolid; |
---|
| 1132 | G4VPVParameterisation *pParam; |
---|
| 1133 | |
---|
| 1134 | mother = fHistory.GetVolume(0); |
---|
| 1135 | for ( i=1; i<=cdepth; i++ ) |
---|
| 1136 | { |
---|
| 1137 | current = fHistory.GetVolume(i); |
---|
| 1138 | switch ( fHistory.GetVolumeType(i) ) |
---|
| 1139 | { |
---|
| 1140 | case kNormal: |
---|
| 1141 | break; |
---|
| 1142 | case kReplica: |
---|
| 1143 | freplicaNav.ComputeTransformation(fHistory.GetReplicaNo(i), current); |
---|
| 1144 | break; |
---|
| 1145 | case kParameterised: |
---|
| 1146 | G4int replicaNo; |
---|
| 1147 | pParam = current->GetParameterisation(); |
---|
| 1148 | replicaNo = fHistory.GetReplicaNo(i); |
---|
| 1149 | pSolid = pParam->ComputeSolid(replicaNo, current); |
---|
| 1150 | |
---|
| 1151 | // Set up dimensions & transform in solid/physical volume |
---|
| 1152 | // |
---|
| 1153 | pSolid->ComputeDimensions(pParam, replicaNo, current); |
---|
| 1154 | pParam->ComputeTransformation(replicaNo, current); |
---|
| 1155 | |
---|
| 1156 | G4TouchableHistory touchable( fHistory ); |
---|
| 1157 | touchable.MoveUpHistory(); // move up to the parent level |
---|
| 1158 | |
---|
| 1159 | // Set up the correct solid and material in Logical Volume |
---|
| 1160 | // |
---|
| 1161 | G4LogicalVolume *pLogical = current->GetLogicalVolume(); |
---|
| 1162 | pLogical->SetSolid( pSolid ); |
---|
| 1163 | pLogical->UpdateMaterial( pParam -> |
---|
| 1164 | ComputeMaterial(replicaNo, current, &touchable) ); |
---|
| 1165 | break; |
---|
| 1166 | } |
---|
| 1167 | mother = current; |
---|
| 1168 | } |
---|
| 1169 | } |
---|
| 1170 | |
---|
| 1171 | // ******************************************************************** |
---|
| 1172 | // GetLocalExitNormal |
---|
| 1173 | // |
---|
| 1174 | // Obtains the Normal vector to a surface (in local coordinates) |
---|
| 1175 | // pointing out of previous volume and into current volume |
---|
| 1176 | // ******************************************************************** |
---|
| 1177 | // |
---|
| 1178 | G4ThreeVector G4Navigator::GetLocalExitNormal( G4bool* valid ) |
---|
| 1179 | { |
---|
| 1180 | G4ThreeVector ExitNormal(0.,0.,0.); |
---|
| 1181 | |
---|
| 1182 | if ( EnteredDaughterVolume() ) |
---|
| 1183 | { |
---|
| 1184 | ExitNormal= -(fHistory.GetTopVolume()->GetLogicalVolume()-> |
---|
| 1185 | GetSolid()->SurfaceNormal(fLastLocatedPointLocal)); |
---|
| 1186 | *valid = true; |
---|
| 1187 | } |
---|
| 1188 | else |
---|
| 1189 | { |
---|
| 1190 | if( fExitedMother ) |
---|
| 1191 | { |
---|
| 1192 | ExitNormal = fGrandMotherExitNormal; |
---|
| 1193 | *valid = true; |
---|
| 1194 | } |
---|
| 1195 | else |
---|
| 1196 | { |
---|
| 1197 | // We are not at a boundary. |
---|
| 1198 | // ExitNormal remains (0,0,0) |
---|
| 1199 | // |
---|
| 1200 | *valid = false; |
---|
| 1201 | } |
---|
| 1202 | } |
---|
| 1203 | return ExitNormal; |
---|
| 1204 | } |
---|
| 1205 | |
---|
| 1206 | // ******************************************************************** |
---|
| 1207 | // ComputeSafety |
---|
| 1208 | // |
---|
| 1209 | // It assumes that it will be |
---|
| 1210 | // i) called at the Point in the same volume as the EndPoint of the |
---|
| 1211 | // ComputeStep. |
---|
| 1212 | // ii) after (or at the end of) ComputeStep OR after the relocation. |
---|
| 1213 | // ******************************************************************** |
---|
| 1214 | // |
---|
| 1215 | G4double G4Navigator::ComputeSafety( const G4ThreeVector &pGlobalpoint, |
---|
| 1216 | const G4double pMaxLength) |
---|
| 1217 | { |
---|
| 1218 | G4double newSafety = 0.0; |
---|
| 1219 | |
---|
| 1220 | #ifdef G4DEBUG_NAVIGATION |
---|
| 1221 | G4int oldcoutPrec = G4cout.precision(8); |
---|
| 1222 | if( fVerbose > 0 ) |
---|
| 1223 | { |
---|
| 1224 | G4cout << "*** G4Navigator::ComputeSafety: ***" << G4endl |
---|
| 1225 | << " Called at point: " << pGlobalpoint << G4endl; |
---|
| 1226 | |
---|
| 1227 | G4VPhysicalVolume *motherPhysical = fHistory.GetTopVolume(); |
---|
| 1228 | G4cout << " Volume = " << motherPhysical->GetName() |
---|
| 1229 | << " - Maximum length = " << pMaxLength << G4endl; |
---|
| 1230 | if( fVerbose >= 4 ) |
---|
| 1231 | { |
---|
| 1232 | G4cout << " ----- Upon entering Compute Safety:" << G4endl; |
---|
| 1233 | PrintState(); |
---|
| 1234 | } |
---|
| 1235 | } |
---|
| 1236 | #endif |
---|
| 1237 | |
---|
| 1238 | G4double distEndpointSq = (pGlobalpoint-fStepEndPoint).mag2(); |
---|
| 1239 | G4bool stayedOnEndpoint = distEndpointSq < kCarTolerance*kCarTolerance; |
---|
| 1240 | G4bool endpointOnSurface = fEnteredDaughter || fExitedMother; |
---|
| 1241 | |
---|
| 1242 | if( !(endpointOnSurface && stayedOnEndpoint) ) |
---|
| 1243 | { |
---|
| 1244 | // Pseudo-relocate to this point (updates voxel information only) |
---|
| 1245 | // |
---|
| 1246 | LocateGlobalPointWithinVolume( pGlobalpoint ); |
---|
| 1247 | // --->> Danger: Side effects on sub-navigator voxel information <<--- |
---|
| 1248 | // Could be replaced again by 'granular' calls to sub-navigator |
---|
| 1249 | // locates (similar side-effects, but faster. |
---|
| 1250 | // Solutions: |
---|
| 1251 | // 1) Re-locate (to where?) |
---|
| 1252 | // 2) Insure that the methods using (G4ComputeStep?) |
---|
| 1253 | // does a relocation (if information is disturbed only ?) |
---|
| 1254 | |
---|
| 1255 | #ifdef G4DEBUG_NAVIGATION |
---|
| 1256 | if( fVerbose >= 2 ) |
---|
| 1257 | { |
---|
| 1258 | G4cout << " G4Navigator::ComputeSafety() relocates-in-volume to point: " |
---|
| 1259 | << pGlobalpoint << G4endl; |
---|
| 1260 | } |
---|
| 1261 | #endif |
---|
| 1262 | G4VPhysicalVolume *motherPhysical = fHistory.GetTopVolume(); |
---|
| 1263 | G4LogicalVolume *motherLogical = motherPhysical->GetLogicalVolume(); |
---|
| 1264 | G4SmartVoxelHeader* pVoxelHeader = motherLogical->GetVoxelHeader(); |
---|
| 1265 | G4ThreeVector localPoint = ComputeLocalPoint(pGlobalpoint); |
---|
| 1266 | |
---|
| 1267 | if ( fHistory.GetTopVolumeType()!=kReplica ) |
---|
| 1268 | { |
---|
| 1269 | switch(CharacteriseDaughters(motherLogical)) |
---|
| 1270 | { |
---|
| 1271 | case kNormal: |
---|
| 1272 | if ( pVoxelHeader ) |
---|
| 1273 | { |
---|
| 1274 | newSafety=fvoxelNav.ComputeSafety(localPoint,fHistory,pMaxLength); |
---|
| 1275 | } |
---|
| 1276 | else |
---|
| 1277 | { |
---|
| 1278 | newSafety=fnormalNav.ComputeSafety(localPoint,fHistory,pMaxLength); |
---|
| 1279 | } |
---|
| 1280 | break; |
---|
| 1281 | case kParameterised: |
---|
| 1282 | if( GetDaughtersRegularStructureId(motherLogical) != 1 ) |
---|
| 1283 | { |
---|
| 1284 | newSafety = fparamNav.ComputeSafety(localPoint,fHistory,pMaxLength); |
---|
| 1285 | } |
---|
| 1286 | else // Regular structure |
---|
| 1287 | { |
---|
| 1288 | newSafety = fregularNav.ComputeSafety(localPoint,fHistory,pMaxLength); |
---|
| 1289 | } |
---|
| 1290 | break; |
---|
| 1291 | case kReplica: |
---|
| 1292 | G4Exception("G4Navigator::ComputeSafety()", "NotApplicable", |
---|
| 1293 | FatalException, "Not applicable for replicated volumes."); |
---|
| 1294 | break; |
---|
| 1295 | } |
---|
| 1296 | } |
---|
| 1297 | else |
---|
| 1298 | { |
---|
| 1299 | newSafety = freplicaNav.ComputeSafety(pGlobalpoint, localPoint, |
---|
| 1300 | fHistory, pMaxLength); |
---|
| 1301 | } |
---|
| 1302 | } |
---|
| 1303 | else // if( endpointOnSurface && stayedOnEndpoint ) |
---|
| 1304 | { |
---|
| 1305 | #ifdef G4DEBUG_NAVIGATION |
---|
| 1306 | if( fVerbose >= 2 ) |
---|
| 1307 | { |
---|
| 1308 | G4cout << " G4Navigator::ComputeSafety() finds that point - " |
---|
| 1309 | << pGlobalpoint << " - is on surface " << G4endl; |
---|
| 1310 | if( fEnteredDaughter ) { G4cout << " entered new daughter volume"; } |
---|
| 1311 | if( fExitedMother ) { G4cout << " and exited previous volume."; } |
---|
| 1312 | G4cout << G4endl; |
---|
| 1313 | G4cout << " EndPoint was = " << fStepEndPoint << G4endl; |
---|
| 1314 | } |
---|
| 1315 | #endif |
---|
| 1316 | newSafety = 0.0; |
---|
| 1317 | } |
---|
| 1318 | |
---|
| 1319 | // Remember last safety origin & value |
---|
| 1320 | // |
---|
| 1321 | fPreviousSftOrigin = pGlobalpoint; |
---|
| 1322 | fPreviousSafety = newSafety; |
---|
| 1323 | |
---|
| 1324 | #ifdef G4DEBUG_NAVIGATION |
---|
| 1325 | if( fVerbose > 1 ) |
---|
| 1326 | { |
---|
| 1327 | G4cout << " ---- Exiting ComputeSafety " << G4endl; |
---|
| 1328 | if( fVerbose > 2 ) { PrintState(); } |
---|
| 1329 | G4cout << " Returned value of Safety = " << newSafety << G4endl; |
---|
| 1330 | } |
---|
| 1331 | G4cout.precision(oldcoutPrec); |
---|
| 1332 | #endif |
---|
| 1333 | |
---|
| 1334 | return newSafety; |
---|
| 1335 | } |
---|
| 1336 | |
---|
| 1337 | // ******************************************************************** |
---|
| 1338 | // CreateTouchableHistoryHandle |
---|
| 1339 | // ******************************************************************** |
---|
| 1340 | // |
---|
| 1341 | G4TouchableHistoryHandle G4Navigator::CreateTouchableHistoryHandle() const |
---|
| 1342 | { |
---|
| 1343 | return G4TouchableHistoryHandle( CreateTouchableHistory() ); |
---|
| 1344 | } |
---|
| 1345 | |
---|
| 1346 | // ******************************************************************** |
---|
| 1347 | // PrintState |
---|
| 1348 | // ******************************************************************** |
---|
| 1349 | // |
---|
| 1350 | void G4Navigator::PrintState() const |
---|
| 1351 | { |
---|
| 1352 | G4int oldcoutPrec = G4cout.precision(4); |
---|
| 1353 | if( fVerbose == 4 ) |
---|
| 1354 | { |
---|
| 1355 | G4cout << "The current state of G4Navigator is: " << G4endl; |
---|
| 1356 | G4cout << " ValidExitNormal= " << fValidExitNormal << G4endl |
---|
| 1357 | << " ExitNormal = " << fExitNormal << G4endl |
---|
| 1358 | << " Exiting = " << fExiting << G4endl |
---|
| 1359 | << " Entering = " << fEntering << G4endl |
---|
| 1360 | << " BlockedPhysicalVolume= " ; |
---|
| 1361 | if (fBlockedPhysicalVolume==0) |
---|
| 1362 | G4cout << "None"; |
---|
| 1363 | else |
---|
| 1364 | G4cout << fBlockedPhysicalVolume->GetName(); |
---|
| 1365 | G4cout << G4endl |
---|
| 1366 | << " BlockedReplicaNo = " << fBlockedReplicaNo << G4endl |
---|
| 1367 | << " LastStepWasZero = " << fLastStepWasZero << G4endl |
---|
| 1368 | << G4endl; |
---|
| 1369 | } |
---|
| 1370 | if( ( 1 < fVerbose) && (fVerbose < 4) ) |
---|
| 1371 | { |
---|
| 1372 | G4cout << std::setw(30) << " ExitNormal " << " " |
---|
| 1373 | << std::setw( 5) << " Valid " << " " |
---|
| 1374 | << std::setw( 9) << " Exiting " << " " |
---|
| 1375 | << std::setw( 9) << " Entering" << " " |
---|
| 1376 | << std::setw(15) << " Blocked:Volume " << " " |
---|
| 1377 | << std::setw( 9) << " ReplicaNo" << " " |
---|
| 1378 | << std::setw( 8) << " LastStepZero " << " " |
---|
| 1379 | << G4endl; |
---|
| 1380 | G4cout << "( " << std::setw(7) << fExitNormal.x() |
---|
| 1381 | << ", " << std::setw(7) << fExitNormal.y() |
---|
| 1382 | << ", " << std::setw(7) << fExitNormal.z() << " ) " |
---|
| 1383 | << std::setw( 5) << fValidExitNormal << " " |
---|
| 1384 | << std::setw( 9) << fExiting << " " |
---|
| 1385 | << std::setw( 9) << fEntering << " "; |
---|
| 1386 | if ( fBlockedPhysicalVolume==0 ) |
---|
| 1387 | G4cout << std::setw(15) << "None"; |
---|
| 1388 | else |
---|
| 1389 | G4cout << std::setw(15)<< fBlockedPhysicalVolume->GetName(); |
---|
| 1390 | G4cout << std::setw( 9) << fBlockedReplicaNo << " " |
---|
| 1391 | << std::setw( 8) << fLastStepWasZero << " " |
---|
| 1392 | << G4endl; |
---|
| 1393 | } |
---|
| 1394 | if( fVerbose > 2 ) |
---|
| 1395 | { |
---|
| 1396 | G4cout.precision(8); |
---|
| 1397 | G4cout << " Current Localpoint = " << fLastLocatedPointLocal << G4endl; |
---|
| 1398 | G4cout << " PreviousSftOrigin = " << fPreviousSftOrigin << G4endl; |
---|
| 1399 | G4cout << " PreviousSafety = " << fPreviousSafety << G4endl; |
---|
| 1400 | } |
---|
| 1401 | G4cout.precision(oldcoutPrec); |
---|
| 1402 | } |
---|
| 1403 | |
---|
| 1404 | // ******************************************************************** |
---|
| 1405 | // Operator << |
---|
| 1406 | // ******************************************************************** |
---|
| 1407 | // |
---|
| 1408 | std::ostream& operator << (std::ostream &os,const G4Navigator &n) |
---|
| 1409 | { |
---|
| 1410 | os << "Current History: " << G4endl << n.fHistory; |
---|
| 1411 | return os; |
---|
| 1412 | } |
---|