[834] | 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: G4TheRayTracer.cc,v 1.3 2006/06/29 21:24:25 gunter Exp $ |
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[1347] | 28 | // GEANT4 tag $Name: geant4-09-04-ref-00 $ |
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[834] | 29 | // |
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| 30 | // |
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| 31 | // |
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| 32 | |
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| 33 | |
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| 34 | #include "G4TheRayTracer.hh" |
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| 35 | #include "G4EventManager.hh" |
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| 36 | #include "G4RTMessenger.hh" |
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| 37 | #include "G4RayShooter.hh" |
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| 38 | #include "G4VFigureFileMaker.hh" |
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| 39 | #include "G4RTTrackingAction.hh" |
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| 40 | #include "G4RTSteppingAction.hh" |
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| 41 | #include "G4RayTrajectory.hh" |
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| 42 | #include "G4RayTrajectoryPoint.hh" |
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| 43 | #include "G4RTJpegMaker.hh" |
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| 44 | #include "G4RTSimpleScanner.hh" |
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| 45 | #include "G4GeometryManager.hh" |
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| 46 | #include "G4SDManager.hh" |
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| 47 | #include "G4StateManager.hh" |
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| 48 | #include "G4Event.hh" |
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| 49 | #include "G4TrajectoryContainer.hh" |
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| 50 | #include "G4Colour.hh" |
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| 51 | #include "G4VisAttributes.hh" |
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| 52 | #include "G4UImanager.hh" |
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| 53 | #include "G4TransportationManager.hh" |
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| 54 | #include "G4RegionStore.hh" |
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| 55 | #include "G4ProductionCutsTable.hh" |
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| 56 | |
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| 57 | G4TheRayTracer::G4TheRayTracer(G4VFigureFileMaker* figMaker, |
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| 58 | G4VRTScanner* scanner) |
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| 59 | { |
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| 60 | theFigMaker = figMaker; |
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| 61 | if(!theFigMaker) theFigMaker = new G4RTJpegMaker; |
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| 62 | theScanner = scanner; |
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| 63 | if(!theScanner) theScanner = new G4RTSimpleScanner; |
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| 64 | theRayShooter = new G4RayShooter(); |
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| 65 | theRayTracerEventAction = 0; |
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| 66 | theRayTracerStackingAction = 0; |
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| 67 | theRayTracerTrackingAction = 0; |
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| 68 | theRayTracerSteppingAction = 0; |
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| 69 | theMessenger = G4RTMessenger::GetInstance(this,theRayTracerSteppingAction); |
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| 70 | theEventManager = G4EventManager::GetEventManager(); |
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| 71 | |
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| 72 | nColumn = 640; |
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| 73 | nRow = 640; |
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| 74 | |
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| 75 | eyePosition = G4ThreeVector(1.*m,1.*m,1.*m); |
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| 76 | targetPosition = G4ThreeVector(0.,0.,0.); |
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| 77 | lightDirection = G4ThreeVector(-0.1,-0.2,-0.3).unit(); |
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| 78 | viewSpan = 5.0*deg; |
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| 79 | headAngle = 270.*deg; |
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| 80 | attenuationLength = 1.0*m; |
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| 81 | |
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| 82 | distortionOn = false; |
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| 83 | antialiasingOn = false; |
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| 84 | |
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| 85 | backgroundColour = G4Colour(1.,1.,1.); |
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| 86 | } |
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| 87 | |
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| 88 | G4TheRayTracer::~G4TheRayTracer() |
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| 89 | { |
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| 90 | delete theRayShooter; |
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| 91 | if(theRayTracerTrackingAction) delete theRayTracerTrackingAction; |
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| 92 | if(theRayTracerSteppingAction) delete theRayTracerSteppingAction; |
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| 93 | delete theMessenger; |
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| 94 | delete theScanner; |
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| 95 | delete theFigMaker; |
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| 96 | } |
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| 97 | |
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| 98 | void G4TheRayTracer::Trace(G4String fileName) |
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| 99 | { |
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| 100 | G4StateManager* theStateMan = G4StateManager::GetStateManager(); |
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| 101 | G4ApplicationState currentState = theStateMan->GetCurrentState(); |
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| 102 | if(currentState!=G4State_Idle) |
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| 103 | { |
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| 104 | G4cerr << "Illegal application state - Trace() ignored." << G4endl; |
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| 105 | return; |
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| 106 | } |
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| 107 | |
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| 108 | if(!theFigMaker) |
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| 109 | { |
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| 110 | G4cerr << "Figure file maker class is not specified - Trace() ignored." << G4endl; |
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| 111 | return; |
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| 112 | } |
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| 113 | |
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| 114 | G4UImanager* UI = G4UImanager::GetUIpointer(); |
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| 115 | G4int storeTrajectory = UI->GetCurrentIntValue("/tracking/storeTrajectory"); |
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| 116 | if(storeTrajectory==0) UI->ApplyCommand("/tracking/storeTrajectory 1"); |
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| 117 | |
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| 118 | |
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| 119 | G4ThreeVector tmpVec = targetPosition - eyePosition; |
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| 120 | eyeDirection = tmpVec.unit(); |
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| 121 | colorR = new unsigned char[nColumn*nRow]; |
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| 122 | colorG = new unsigned char[nColumn*nRow]; |
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| 123 | colorB = new unsigned char[nColumn*nRow]; |
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| 124 | |
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| 125 | StoreUserActions(); |
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| 126 | G4bool succeeded = CreateBitMap(); |
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| 127 | if(succeeded) |
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| 128 | { CreateFigureFile(fileName); } |
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| 129 | else |
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| 130 | { G4cerr << "Could not create figure file" << G4endl; |
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| 131 | G4cerr << "You might set the eye position outside of the world volume" << G4endl; } |
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| 132 | RestoreUserActions(); |
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| 133 | |
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| 134 | if(storeTrajectory==0) UI->ApplyCommand("/tracking/storeTrajectory 0"); |
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| 135 | |
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| 136 | delete [] colorR; |
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| 137 | delete [] colorG; |
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| 138 | delete [] colorB; |
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| 139 | } |
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| 140 | |
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| 141 | void G4TheRayTracer::StoreUserActions() |
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| 142 | { |
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| 143 | theUserEventAction = theEventManager->GetUserEventAction(); |
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| 144 | theUserStackingAction = theEventManager->GetUserStackingAction(); |
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| 145 | theUserTrackingAction = theEventManager->GetUserTrackingAction(); |
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| 146 | theUserSteppingAction = theEventManager->GetUserSteppingAction(); |
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| 147 | |
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| 148 | if(!theRayTracerTrackingAction) theRayTracerTrackingAction = new G4RTTrackingAction(); |
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| 149 | if(!theRayTracerSteppingAction) theRayTracerSteppingAction = new G4RTSteppingAction(); |
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| 150 | |
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| 151 | theEventManager->SetUserAction(theRayTracerEventAction); |
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| 152 | theEventManager->SetUserAction(theRayTracerStackingAction); |
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| 153 | theEventManager->SetUserAction(theRayTracerTrackingAction); |
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| 154 | theEventManager->SetUserAction(theRayTracerSteppingAction); |
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| 155 | |
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| 156 | G4SDManager* theSDMan = G4SDManager::GetSDMpointerIfExist(); |
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| 157 | if(theSDMan) |
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| 158 | { theSDMan->Activate("/",false); } |
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| 159 | |
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| 160 | G4GeometryManager* theGeomMan = G4GeometryManager::GetInstance(); |
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| 161 | theGeomMan->OpenGeometry(); |
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| 162 | theGeomMan->CloseGeometry(true); |
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| 163 | } |
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| 164 | |
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| 165 | void G4TheRayTracer::RestoreUserActions() |
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| 166 | { |
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| 167 | theEventManager->SetUserAction(theUserEventAction); |
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| 168 | theEventManager->SetUserAction(theUserStackingAction); |
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| 169 | theEventManager->SetUserAction(theUserTrackingAction); |
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| 170 | theEventManager->SetUserAction(theUserSteppingAction); |
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| 171 | |
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| 172 | G4SDManager* theSDMan = G4SDManager::GetSDMpointerIfExist(); |
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| 173 | if(theSDMan) |
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| 174 | { theSDMan->Activate("/",true); } |
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| 175 | } |
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| 176 | |
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| 177 | #include "G4ProcessManager.hh" |
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| 178 | #include "G4ProcessVector.hh" |
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| 179 | #include "G4Geantino.hh" |
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| 180 | |
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| 181 | G4bool G4TheRayTracer::CreateBitMap() |
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| 182 | { |
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| 183 | G4int iEvent = 0; |
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| 184 | G4double stepAngle = viewSpan/100.; |
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| 185 | G4double viewSpanX = stepAngle*nColumn; |
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| 186 | G4double viewSpanY = stepAngle*nRow; |
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| 187 | G4bool succeeded; |
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| 188 | |
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| 189 | // Confirm process(es) of Geantino is initialized |
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| 190 | G4VPhysicalVolume* pWorld = |
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| 191 | G4TransportationManager::GetTransportationManager()-> |
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| 192 | GetNavigatorForTracking()->GetWorldVolume(); |
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| 193 | G4RegionStore::GetInstance()->UpdateMaterialList(pWorld); |
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| 194 | G4ProductionCutsTable::GetProductionCutsTable()->UpdateCoupleTable(pWorld); |
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| 195 | G4ProcessVector* pVector |
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| 196 | = G4Geantino::GeantinoDefinition()->GetProcessManager()->GetProcessList(); |
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| 197 | for (G4int j=0; j < pVector->size(); ++j) { |
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| 198 | (*pVector)[j]->BuildPhysicsTable(*(G4Geantino::GeantinoDefinition())); |
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| 199 | } |
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| 200 | |
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| 201 | // Close geometry and set the application state |
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| 202 | G4GeometryManager* geomManager = G4GeometryManager::GetInstance(); |
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| 203 | geomManager->OpenGeometry(); |
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| 204 | geomManager->CloseGeometry(1,0); |
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| 205 | |
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| 206 | G4ThreeVector center(0,0,0); |
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| 207 | G4Navigator* navigator = |
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| 208 | G4TransportationManager::GetTransportationManager()->GetNavigatorForTracking(); |
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| 209 | navigator->LocateGlobalPointAndSetup(center,0,false); |
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| 210 | |
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| 211 | G4StateManager* theStateMan = G4StateManager::GetStateManager(); |
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| 212 | theStateMan->SetNewState(G4State_GeomClosed); |
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| 213 | |
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| 214 | // Event loop |
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| 215 | theScanner->Initialize(nRow,nColumn); |
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| 216 | G4int iRow, iColumn; |
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| 217 | while (theScanner->Coords(iRow,iColumn)) { |
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| 218 | G4int iCoord = iRow * nColumn + iColumn; |
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| 219 | G4double dRow = 0, dColumn = 0; // Antialiasing increments. |
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| 220 | G4Event* anEvent = new G4Event(iEvent++); |
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| 221 | G4double angleX = -(viewSpanX/2. - (iColumn+dColumn)*stepAngle); |
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| 222 | G4double angleY = viewSpanY/2. - (iRow+dRow)*stepAngle; |
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| 223 | G4ThreeVector rayDirection; |
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| 224 | if(distortionOn) |
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| 225 | { |
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| 226 | rayDirection = G4ThreeVector(std::tan(angleX)/std::cos(angleY),-std::tan(angleY)/std::cos(angleX),1.0); |
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| 227 | } |
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| 228 | else |
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| 229 | { |
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| 230 | rayDirection = G4ThreeVector(std::tan(angleX),-std::tan(angleY),1.0); |
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| 231 | } |
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| 232 | rayDirection.rotateZ(headAngle); |
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| 233 | rayDirection.rotateUz(eyeDirection); |
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| 234 | G4ThreeVector rayPosition(eyePosition); |
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| 235 | G4bool interceptable = true; |
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| 236 | // Check if rayPosition is in the world. |
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| 237 | EInside whereisit = |
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| 238 | pWorld->GetLogicalVolume()->GetSolid()->Inside(rayPosition); |
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| 239 | if (whereisit != kInside) { |
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| 240 | // It's outside the world, so move it inside. |
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| 241 | G4double outsideDistance = |
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| 242 | pWorld->GetLogicalVolume()->GetSolid()-> |
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| 243 | DistanceToIn(rayPosition,rayDirection); |
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| 244 | if (outsideDistance != kInfinity) { |
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| 245 | // Borrowing from geometry, where 1e-8 < epsilon < 1e-3, in |
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| 246 | // absolute/internal length units, is used for ensuring good |
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| 247 | // behaviour, choose to add 0.001 to ensure rayPosition is |
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| 248 | // definitely inside the world volume (JA 16/9/2005)... |
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| 249 | rayPosition = rayPosition+(outsideDistance+0.001)*rayDirection; |
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| 250 | } |
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| 251 | else { |
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| 252 | interceptable = false; |
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| 253 | } |
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| 254 | } |
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| 255 | if (interceptable) { |
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| 256 | theRayShooter->Shoot(anEvent,rayPosition,rayDirection); |
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| 257 | theEventManager->ProcessOneEvent(anEvent); |
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| 258 | succeeded = GenerateColour(anEvent); |
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| 259 | colorR[iCoord] = (unsigned char)(int(255*rayColour.GetRed())); |
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| 260 | colorG[iCoord] = (unsigned char)(int(255*rayColour.GetGreen())); |
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| 261 | colorB[iCoord] = (unsigned char)(int(255*rayColour.GetBlue())); |
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| 262 | } else { // Ray does not intercept world at all. |
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| 263 | // Store background colour... |
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| 264 | colorR[iCoord] = (unsigned char)(int(255*backgroundColour.GetRed())); |
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| 265 | colorG[iCoord] = (unsigned char)(int(255*backgroundColour.GetGreen())); |
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| 266 | colorB[iCoord] = (unsigned char)(int(255*backgroundColour.GetBlue())); |
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| 267 | succeeded = true; |
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| 268 | } |
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| 269 | |
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| 270 | theScanner->Draw(colorR[iCoord],colorG[iCoord],colorB[iCoord]); |
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| 271 | |
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| 272 | delete anEvent; |
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| 273 | if(!succeeded) return false; |
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| 274 | } |
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| 275 | |
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| 276 | theStateMan->SetNewState(G4State_Idle); |
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| 277 | return true; |
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| 278 | } |
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| 279 | |
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| 280 | void G4TheRayTracer::CreateFigureFile(G4String fileName) |
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| 281 | { |
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| 282 | //G4cout << nColumn << " " << nRow << G4endl; |
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| 283 | theFigMaker->CreateFigureFile(fileName,nColumn,nRow,colorR,colorG,colorB); |
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| 284 | } |
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| 285 | |
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| 286 | G4bool G4TheRayTracer::GenerateColour(G4Event* anEvent) |
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| 287 | { |
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| 288 | G4TrajectoryContainer * trajectoryContainer = anEvent->GetTrajectoryContainer(); |
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| 289 | |
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| 290 | G4RayTrajectory* trajectory = (G4RayTrajectory*)( (*trajectoryContainer)[0] ); |
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| 291 | if(!trajectory) return false; |
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| 292 | |
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| 293 | G4int nPoint = trajectory->GetPointEntries(); |
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| 294 | if(nPoint==0) return false; |
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| 295 | |
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| 296 | G4Colour initialColour(backgroundColour); |
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| 297 | if( trajectory->GetPointC(nPoint-1)->GetPostStepAtt() ) |
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| 298 | { initialColour = GetSurfaceColour(trajectory->GetPointC(nPoint-1)); } |
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| 299 | rayColour = Attenuate(trajectory->GetPointC(nPoint-1),initialColour); |
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| 300 | |
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| 301 | for(int i=nPoint-2;i>=0;i--) |
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| 302 | { |
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| 303 | G4Colour surfaceColour = GetSurfaceColour(trajectory->GetPointC(i)); |
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| 304 | G4double weight = 1.0 - surfaceColour.GetAlpha(); |
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| 305 | G4Colour mixedColour = GetMixedColour(rayColour,surfaceColour,weight); |
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| 306 | rayColour = Attenuate(trajectory->GetPointC(i),mixedColour); |
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| 307 | } |
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| 308 | |
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| 309 | return true; |
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| 310 | } |
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| 311 | |
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| 312 | G4Colour G4TheRayTracer::GetMixedColour(G4Colour surfCol,G4Colour transCol,G4double weight) |
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| 313 | { |
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| 314 | G4double r = weight*surfCol.GetRed() + (1.-weight)*transCol.GetRed(); |
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| 315 | G4double g = weight*surfCol.GetGreen() + (1.-weight)*transCol.GetGreen(); |
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| 316 | G4double b = weight*surfCol.GetBlue() + (1.-weight)*transCol.GetBlue(); |
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| 317 | G4double a = weight*surfCol.GetAlpha() + (1.-weight)*transCol.GetAlpha(); |
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| 318 | return G4Colour(r,g,b,a); |
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| 319 | } |
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| 320 | |
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| 321 | G4Colour G4TheRayTracer::GetSurfaceColour(G4RayTrajectoryPoint* point) |
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| 322 | { |
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| 323 | const G4VisAttributes* preAtt = point->GetPreStepAtt(); |
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| 324 | const G4VisAttributes* postAtt = point->GetPostStepAtt(); |
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| 325 | |
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| 326 | G4bool preVis = ValidColour(preAtt); |
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| 327 | G4bool postVis = ValidColour(postAtt); |
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| 328 | |
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| 329 | G4Colour transparent(1.,1.,1.,0.); |
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| 330 | |
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| 331 | if(!preVis&&!postVis) return transparent; |
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| 332 | |
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| 333 | G4ThreeVector normal = point->GetSurfaceNormal(); |
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| 334 | |
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| 335 | G4Colour preCol(1.,1.,1.); |
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| 336 | G4Colour postCol(1.,1.,1.); |
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| 337 | |
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| 338 | if(preVis) |
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| 339 | { |
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| 340 | G4double brill = (1.0-(-lightDirection).dot(normal))/2.0; |
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| 341 | G4double r = preAtt->GetColour().GetRed(); |
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| 342 | G4double g = preAtt->GetColour().GetGreen(); |
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| 343 | G4double b = preAtt->GetColour().GetBlue(); |
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| 344 | preCol = G4Colour(r*brill,g*brill,b*brill,preAtt->GetColour().GetAlpha()); |
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| 345 | } |
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| 346 | else |
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| 347 | { preCol = transparent; } |
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| 348 | |
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| 349 | if(postVis) |
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| 350 | { |
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| 351 | G4double brill = (1.0-(-lightDirection).dot(-normal))/2.0; |
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| 352 | G4double r = postAtt->GetColour().GetRed(); |
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| 353 | G4double g = postAtt->GetColour().GetGreen(); |
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| 354 | G4double b = postAtt->GetColour().GetBlue(); |
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| 355 | postCol = G4Colour(r*brill,g*brill,b*brill,postAtt->GetColour().GetAlpha()); |
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| 356 | } |
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| 357 | else |
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| 358 | { postCol = transparent; } |
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| 359 | |
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| 360 | if(!preVis) return postCol; |
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| 361 | if(!postVis) return preCol; |
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| 362 | |
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| 363 | G4double weight = 0.5; |
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| 364 | return GetMixedColour(preCol,postCol,weight); |
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| 365 | } |
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| 366 | |
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| 367 | G4Colour G4TheRayTracer::Attenuate(G4RayTrajectoryPoint* point, G4Colour sourceCol) |
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| 368 | { |
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| 369 | const G4VisAttributes* preAtt = point->GetPreStepAtt(); |
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| 370 | |
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| 371 | G4bool visible = ValidColour(preAtt); |
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| 372 | if(!visible) return sourceCol; |
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| 373 | |
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| 374 | G4Colour objCol = preAtt->GetColour(); |
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| 375 | G4double stepRed = objCol.GetRed(); |
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| 376 | G4double stepGreen = objCol.GetGreen(); |
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| 377 | G4double stepBlue = objCol.GetBlue(); |
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| 378 | G4double stepAlpha = objCol.GetAlpha(); |
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| 379 | G4double stepLength = point->GetStepLength(); |
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| 380 | |
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| 381 | G4double attenuationFuctor; |
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| 382 | if(stepAlpha > 0.9999999){ stepAlpha = 0.9999999; } // patch to the next line |
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| 383 | attenuationFuctor = -stepAlpha/(1.0-stepAlpha)*stepLength/attenuationLength; |
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| 384 | |
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| 385 | G4double KtRed = std::exp((1.0-stepRed)*attenuationFuctor); |
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| 386 | G4double KtGreen = std::exp((1.0-stepGreen)*attenuationFuctor); |
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| 387 | G4double KtBlue = std::exp((1.0-stepBlue)*attenuationFuctor); |
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| 388 | if(KtRed>1.0){KtRed=1.0;} |
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| 389 | if(KtGreen>1.0){KtGreen=1.0;} |
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| 390 | if(KtBlue>1.0){KtBlue=1.0;} |
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| 391 | return G4Colour(sourceCol.GetRed()*KtRed, |
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| 392 | sourceCol.GetGreen()*KtGreen,sourceCol.GetBlue()*KtBlue); |
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| 393 | } |
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| 394 | |
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| 395 | G4bool G4TheRayTracer::ValidColour(const G4VisAttributes* visAtt) |
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| 396 | { |
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| 397 | G4bool val = true; |
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| 398 | if(!visAtt) |
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| 399 | { val = false; } |
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| 400 | else if(!(visAtt->IsVisible())) |
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| 401 | { val = false; } |
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| 402 | else if(visAtt->IsForceDrawingStyle() |
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| 403 | &&(visAtt->GetForcedDrawingStyle()==G4VisAttributes::wireframe)) |
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| 404 | { val = false; } |
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| 405 | return val; |
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| 406 | } |
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| 407 | |
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