[1197] | 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 | // $Id: G4AdjointPosOnPhysVolGenerator.cc,v 1.2 2009/11/18 17:57:59 gcosmo Exp $ |
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[1228] | 27 | // GEANT4 tag $Name: geant4-09-03 $ |
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[1197] | 28 | // |
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| 29 | ///////////////////////////////////////////////////////////////////////////// |
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| 30 | // Class Name: G4AdjointCrossSurfChecker |
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| 31 | // Author: L. Desorgher |
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| 32 | // Organisation: SpaceIT GmbH |
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| 33 | // Contract: ESA contract 21435/08/NL/AT |
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| 34 | // Customer: ESA/ESTEC |
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| 35 | ///////////////////////////////////////////////////////////////////////////// |
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| 36 | |
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| 37 | #include "G4AdjointPosOnPhysVolGenerator.hh" |
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| 38 | #include "G4VSolid.hh" |
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| 39 | #include "G4VoxelLimits.hh" |
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| 40 | #include "G4AffineTransform.hh" |
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| 41 | #include "Randomize.hh" |
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| 42 | #include "G4VPhysicalVolume.hh" |
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| 43 | #include "G4PhysicalVolumeStore.hh" |
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| 44 | #include "G4LogicalVolumeStore.hh" |
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| 45 | |
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| 46 | G4AdjointPosOnPhysVolGenerator* G4AdjointPosOnPhysVolGenerator::theInstance = 0; |
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| 47 | |
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| 48 | //////////////////////////////////////////////////// |
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| 49 | // |
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| 50 | G4AdjointPosOnPhysVolGenerator* G4AdjointPosOnPhysVolGenerator::GetInstance() |
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| 51 | { |
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| 52 | if(theInstance == 0) { |
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| 53 | static G4AdjointPosOnPhysVolGenerator manager; |
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| 54 | theInstance = &manager; |
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| 55 | } |
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| 56 | return theInstance; |
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| 57 | } |
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| 58 | |
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| 59 | //////////////////////////////////////////////////// |
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| 60 | // |
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| 61 | G4AdjointPosOnPhysVolGenerator::~G4AdjointPosOnPhysVolGenerator() |
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| 62 | { |
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| 63 | } |
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| 64 | |
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| 65 | //////////////////////////////////////////////////// |
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| 66 | // |
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| 67 | G4AdjointPosOnPhysVolGenerator::G4AdjointPosOnPhysVolGenerator() |
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| 68 | { |
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| 69 | theSolid=0; |
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| 70 | NStat =1000000; |
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| 71 | epsilon=0.001; |
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| 72 | ModelOfSurfaceSource = "OnSolid"; //OnSolid, ExternalSphere, ExternalBox |
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| 73 | thePhysicalVolume = 0; |
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| 74 | theTransformationFromPhysVolToWorld = G4AffineTransform(); |
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| 75 | UseSphere =true; |
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| 76 | } |
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| 77 | |
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| 78 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 79 | // |
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| 80 | G4VPhysicalVolume* G4AdjointPosOnPhysVolGenerator::DefinePhysicalVolume(const G4String& aName) |
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| 81 | { |
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| 82 | thePhysicalVolume = 0; |
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| 83 | theSolid =0; |
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| 84 | G4PhysicalVolumeStore* thePhysVolStore =G4PhysicalVolumeStore::GetInstance(); |
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| 85 | for ( unsigned int i=0; i< thePhysVolStore->size();i++){ |
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| 86 | G4String vol_name =(*thePhysVolStore)[i]->GetName(); |
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| 87 | if (vol_name == ""){ |
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| 88 | vol_name = (*thePhysVolStore)[i]->GetLogicalVolume()->GetName(); |
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| 89 | } |
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| 90 | if (vol_name == aName){ |
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| 91 | thePhysicalVolume = (*thePhysVolStore)[i]; |
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| 92 | } |
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| 93 | } |
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| 94 | if (thePhysicalVolume){ |
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| 95 | theSolid = thePhysicalVolume->GetLogicalVolume()->GetSolid(); |
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| 96 | ComputeTransformationFromPhysVolToWorld(); |
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| 97 | /*AreaOfExtSurfaceOfThePhysicalVolume=ComputeAreaOfExtSurface(1.e-3); |
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| 98 | G4cout<<"Monte Carlo Estimate of the area of the external surface :"<<AreaOfExtSurfaceOfThePhysicalVolume/m/m<<" m2"<<std::endl;*/ |
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| 99 | } |
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| 100 | else { |
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| 101 | G4cout<<"The physical volume with name "<<aName<<" does not exist!!"<<std::endl; |
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| 102 | G4cout<<"Before generating a source on an external surface of a volume you should select another physical volume"<<std::endl; |
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| 103 | } |
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| 104 | return thePhysicalVolume; |
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| 105 | } |
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| 106 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 107 | // |
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| 108 | void G4AdjointPosOnPhysVolGenerator::DefinePhysicalVolume1(const G4String& aName) |
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| 109 | { |
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| 110 | thePhysicalVolume = DefinePhysicalVolume(aName); |
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| 111 | } |
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| 112 | //////////////////////////////////////////////////// |
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| 113 | // |
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| 114 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface() |
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| 115 | { |
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| 116 | return ComputeAreaOfExtSurface(theSolid); |
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| 117 | } |
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| 118 | //////////////////////////////////////////////////// |
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| 119 | // |
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| 120 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface(G4int NStat) |
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| 121 | { |
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| 122 | return ComputeAreaOfExtSurface(theSolid,NStat); |
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| 123 | } |
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| 124 | //////////////////////////////////////////////////// |
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| 125 | // |
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| 126 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface(G4double epsilon) |
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| 127 | { |
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| 128 | return ComputeAreaOfExtSurface(theSolid,epsilon); |
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| 129 | } |
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| 130 | //////////////////////////////////////////////////// |
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| 131 | // |
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| 132 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface(G4VSolid* aSolid) |
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| 133 | { |
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| 134 | return ComputeAreaOfExtSurface(aSolid,1.e-3); |
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| 135 | } |
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| 136 | //////////////////////////////////////////////////// |
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| 137 | // |
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| 138 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface(G4VSolid* aSolid,G4int NStat) |
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| 139 | { |
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| 140 | if (ModelOfSurfaceSource == "OnSolid" ){ |
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| 141 | if (UseSphere){ |
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| 142 | return ComputeAreaOfExtSurfaceStartingFromSphere(aSolid,NStat); |
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| 143 | |
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| 144 | } |
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| 145 | else { |
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| 146 | return ComputeAreaOfExtSurfaceStartingFromBox(aSolid,NStat); |
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| 147 | } |
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| 148 | } |
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| 149 | else { |
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| 150 | G4ThreeVector p,dir; |
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| 151 | if (ModelOfSurfaceSource == "ExternalSphere" ) return GenerateAPositionOnASphereBoundary(aSolid, p,dir); |
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| 152 | return GenerateAPositionOnABoxBoundary(aSolid, p,dir); |
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| 153 | } |
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| 154 | } |
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| 155 | //////////////////////////////////////////////////// |
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| 156 | // |
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| 157 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurface(G4VSolid* aSolid,G4double epsilon) |
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| 158 | { |
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| 159 | G4int Nstat = G4int(1./(epsilon*epsilon)); |
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| 160 | return ComputeAreaOfExtSurface(aSolid,Nstat); |
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| 161 | } |
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| 162 | //////////////////////////////////////////////////// |
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| 163 | void G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnTheExtSurfaceOfASolid(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction) |
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| 164 | { |
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| 165 | G4double area; |
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| 166 | area =1.; |
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| 167 | if (ModelOfSurfaceSource == "OnSolid" ){ |
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| 168 | return GenerateAPositionOnASolidBoundary(aSolid, p,direction); |
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| 169 | } |
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| 170 | if (ModelOfSurfaceSource == "ExternalSphere" ) { |
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| 171 | area = GenerateAPositionOnASphereBoundary(aSolid, p, direction); |
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| 172 | return; |
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| 173 | } |
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| 174 | area = GenerateAPositionOnABoxBoundary(aSolid, p, direction); |
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| 175 | return; |
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| 176 | } |
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| 177 | //////////////////////////////////////////////////// |
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| 178 | void G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnTheExtSurfaceOfTheSolid(G4ThreeVector& p, G4ThreeVector& direction) |
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| 179 | { |
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| 180 | GenerateAPositionOnTheExtSurfaceOfASolid(theSolid,p,direction); |
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| 181 | } |
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| 182 | //////////////////////////////////////////////////// |
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| 183 | // |
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| 184 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurfaceStartingFromBox(G4VSolid* aSolid,G4int Nstat) |
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| 185 | { |
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| 186 | G4double area=1.; |
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| 187 | G4int i=0; |
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| 188 | G4int j=0; |
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| 189 | while (i<Nstat){ |
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| 190 | G4ThreeVector p, direction; |
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| 191 | area = GenerateAPositionOnABoxBoundary( aSolid,p, direction); |
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| 192 | G4double dist_to_in = aSolid->DistanceToIn(p,direction); |
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| 193 | if (dist_to_in<kInfinity/2.) i++; |
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| 194 | j++; |
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| 195 | } |
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| 196 | area=area*double(i)/double(j); |
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| 197 | return area; |
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| 198 | } |
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| 199 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 200 | // |
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| 201 | G4double G4AdjointPosOnPhysVolGenerator::ComputeAreaOfExtSurfaceStartingFromSphere(G4VSolid* aSolid,G4int Nstat) |
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| 202 | { |
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| 203 | G4double area=1.; |
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| 204 | G4int i=0; |
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| 205 | G4int j=0; |
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| 206 | while (i<Nstat){ |
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| 207 | G4ThreeVector p, direction; |
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| 208 | area = GenerateAPositionOnASphereBoundary( aSolid,p, direction); |
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| 209 | G4double dist_to_in = aSolid->DistanceToIn(p,direction); |
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| 210 | if (dist_to_in<kInfinity/2.) i++; |
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| 211 | j++; |
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| 212 | } |
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| 213 | area=area*double(i)/double(j); |
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| 214 | |
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| 215 | return area; |
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| 216 | } |
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| 217 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 218 | // |
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| 219 | void G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnASolidBoundary(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction) |
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| 220 | { |
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| 221 | G4bool find_pos =false; |
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| 222 | G4double area=1.; |
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| 223 | while (!find_pos){ |
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| 224 | if (UseSphere) area = GenerateAPositionOnASphereBoundary( aSolid,p, direction); |
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| 225 | else area = GenerateAPositionOnABoxBoundary( aSolid,p, direction); |
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| 226 | G4double dist_to_in = aSolid->DistanceToIn(p,direction); |
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| 227 | if (dist_to_in<kInfinity/2.) { |
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| 228 | find_pos =true; |
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| 229 | G4ThreeVector p1=p+ 0.99999*direction*dist_to_in; |
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| 230 | G4ThreeVector norm =aSolid->SurfaceNormal(p1); |
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| 231 | p+= 0.999999*direction*dist_to_in; |
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| 232 | CosThDirComparedToNormal=direction.dot(-norm); |
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| 233 | //std::cout<<CosThDirComparedToNormal<<std::endl; |
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| 234 | |
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| 235 | return; |
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| 236 | } |
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| 237 | } |
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| 238 | } |
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| 239 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 240 | // |
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| 241 | G4double G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnASphereBoundary(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction) |
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| 242 | { |
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| 243 | G4double minX,maxX,minY,maxY,minZ,maxZ; |
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| 244 | G4bool yesno; |
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| 245 | |
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| 246 | // values needed for CalculateExtent signature |
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| 247 | |
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| 248 | G4VoxelLimits limit; // Unlimited |
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| 249 | G4AffineTransform origin; |
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| 250 | |
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| 251 | // min max extents of pSolid along X,Y,Z |
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| 252 | |
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| 253 | yesno = aSolid->CalculateExtent(kXAxis,limit,origin,minX,maxX); |
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| 254 | yesno = aSolid->CalculateExtent(kYAxis,limit,origin,minY,maxY); |
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| 255 | yesno = aSolid->CalculateExtent(kZAxis,limit,origin,minZ,maxZ); |
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| 256 | |
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| 257 | G4ThreeVector center = G4ThreeVector((minX+maxX)/2.,(minY+maxY)/2.,(minZ+maxZ)/2.); |
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| 258 | |
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| 259 | G4double dX=(maxX-minX)/2.; |
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| 260 | G4double dY=(maxY-minY)/2.; |
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| 261 | G4double dZ=(maxZ-minZ)/2.; |
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| 262 | G4double scale=1.01; |
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| 263 | G4double r=scale*std::sqrt(dX*dX+dY*dY+dZ*dZ); |
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| 264 | |
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| 265 | G4double cos_th2 = G4UniformRand(); |
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| 266 | G4double theta = std::acos(std::sqrt(cos_th2)); |
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| 267 | G4double phi=G4UniformRand()*3.1415926*2; |
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| 268 | direction.setRThetaPhi(1.,theta,phi); |
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| 269 | direction=-direction; |
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| 270 | G4double cos_th = (1.-2.*G4UniformRand()); |
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| 271 | theta = std::acos(cos_th); |
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| 272 | if (G4UniformRand() <0.5) theta=3.1415926-theta; |
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| 273 | phi=G4UniformRand()*3.1415926*2; |
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| 274 | p.setRThetaPhi(r,theta,phi); |
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| 275 | p+=center; |
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| 276 | direction.rotateY(theta); |
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| 277 | direction.rotateZ(phi); |
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| 278 | return 4.*3.1415926*r*r;; |
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| 279 | } |
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| 280 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 281 | // |
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| 282 | G4double G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnABoxBoundary(G4VSolid* aSolid,G4ThreeVector& p, G4ThreeVector& direction) |
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| 283 | { |
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| 284 | |
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| 285 | G4double ran_var,px,py,pz,minX,maxX,minY,maxY,minZ,maxZ; |
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| 286 | G4bool yesno; |
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| 287 | |
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| 288 | // values needed for CalculateExtent signature |
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| 289 | |
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| 290 | G4VoxelLimits limit; // Unlimited |
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| 291 | G4AffineTransform origin; |
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| 292 | |
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| 293 | // min max extents of pSolid along X,Y,Z |
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| 294 | |
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| 295 | yesno = aSolid->CalculateExtent(kXAxis,limit,origin,minX,maxX); |
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| 296 | yesno = aSolid->CalculateExtent(kYAxis,limit,origin,minY,maxY); |
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| 297 | yesno = aSolid->CalculateExtent(kZAxis,limit,origin,minZ,maxZ); |
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| 298 | |
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| 299 | G4double scale=.1; |
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| 300 | minX-=scale*std::abs(minX); |
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| 301 | minY-=scale*std::abs(minY); |
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| 302 | minZ-=scale*std::abs(minZ); |
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| 303 | maxX+=scale*std::abs(maxX); |
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| 304 | maxY+=scale*std::abs(maxY); |
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| 305 | maxZ+=scale*std::abs(maxZ); |
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| 306 | |
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| 307 | G4double dX=(maxX-minX); |
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| 308 | G4double dY=(maxY-minY); |
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| 309 | G4double dZ=(maxZ-minZ); |
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| 310 | |
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| 311 | G4double XY_prob=2.*dX*dY; |
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| 312 | G4double YZ_prob=2.*dY*dZ; |
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| 313 | G4double ZX_prob=2.*dZ*dX; |
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| 314 | G4double area=XY_prob+YZ_prob+ZX_prob; |
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| 315 | XY_prob/=area; |
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| 316 | YZ_prob/=area; |
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| 317 | ZX_prob/=area; |
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| 318 | |
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| 319 | ran_var=G4UniformRand(); |
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| 320 | G4double cos_th2 = G4UniformRand(); |
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| 321 | G4double sth = std::sqrt(1.-cos_th2); |
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| 322 | G4double cth = std::sqrt(cos_th2); |
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| 323 | G4double phi=G4UniformRand()*3.1415926*2; |
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| 324 | G4double dirX = sth*std::cos(phi); |
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| 325 | G4double dirY = sth*std::sin(phi); |
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| 326 | G4double dirZ = cth; |
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| 327 | if (ran_var <=XY_prob){ //on the XY faces |
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| 328 | G4double ran_var1=ran_var/XY_prob; |
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| 329 | G4double ranX=ran_var1; |
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| 330 | if (ran_var1<=0.5){ |
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| 331 | pz=minZ; |
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| 332 | direction=G4ThreeVector(dirX,dirY,dirZ); |
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| 333 | ranX=ran_var1*2.; |
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| 334 | } |
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| 335 | else{ |
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| 336 | pz=maxZ; |
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| 337 | direction=-G4ThreeVector(dirX,dirY,dirZ); |
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| 338 | ranX=(ran_var1-0.5)*2.; |
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| 339 | } |
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| 340 | G4double ranY=G4UniformRand(); |
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| 341 | px=minX+(maxX-minX)*ranX; |
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| 342 | py=minY+(maxY-minY)*ranY; |
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| 343 | } |
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| 344 | else if (ran_var <=(XY_prob+YZ_prob)){ //on the YZ faces |
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| 345 | G4double ran_var1=(ran_var-XY_prob)/YZ_prob; |
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| 346 | G4double ranY=ran_var1; |
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| 347 | if (ran_var1<=0.5){ |
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| 348 | px=minX; |
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| 349 | direction=G4ThreeVector(dirZ,dirX,dirY); |
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| 350 | ranY=ran_var1*2.; |
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| 351 | } |
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| 352 | else{ |
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| 353 | px=maxX; |
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| 354 | direction=-G4ThreeVector(dirZ,dirX,dirY); |
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| 355 | ranY=(ran_var1-0.5)*2.; |
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| 356 | } |
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| 357 | G4double ranZ=G4UniformRand(); |
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| 358 | py=minY+(maxY-minY)*ranY; |
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| 359 | pz=minZ+(maxZ-minZ)*ranZ; |
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| 360 | |
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| 361 | } |
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| 362 | else{ //on the ZX faces |
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| 363 | G4double ran_var1=(ran_var-XY_prob-YZ_prob)/ZX_prob; |
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| 364 | G4double ranZ=ran_var1; |
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| 365 | if (ran_var1<=0.5){ |
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| 366 | py=minY; |
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| 367 | direction=G4ThreeVector(dirY,dirZ,dirX); |
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| 368 | ranZ=ran_var1*2.; |
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| 369 | } |
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| 370 | else{ |
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| 371 | py=maxY; |
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| 372 | direction=-G4ThreeVector(dirY,dirZ,dirX); |
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| 373 | ranZ=(ran_var1-0.5)*2.; |
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| 374 | } |
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| 375 | G4double ranX=G4UniformRand(); |
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| 376 | px=minX+(maxX-minX)*ranX; |
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| 377 | pz=minZ+(maxZ-minZ)*ranZ; |
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| 378 | } |
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| 379 | |
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| 380 | p=G4ThreeVector(px,py,pz); |
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| 381 | return area; |
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| 382 | } |
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| 383 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 384 | // |
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| 385 | void G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnTheExtSurfaceOfThePhysicalVolume(G4ThreeVector& p, G4ThreeVector& direction) |
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| 386 | { |
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| 387 | if (!thePhysicalVolume) { |
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| 388 | G4cout<<"Before generating a source on an external surface of volume you should select a physical volume"<<std::endl; |
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| 389 | return; |
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| 390 | }; |
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| 391 | GenerateAPositionOnTheExtSurfaceOfTheSolid(p,direction); |
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| 392 | p = theTransformationFromPhysVolToWorld.TransformPoint(p); |
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| 393 | direction = theTransformationFromPhysVolToWorld.TransformAxis(direction); |
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| 394 | } |
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| 395 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 396 | // |
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| 397 | void G4AdjointPosOnPhysVolGenerator::GenerateAPositionOnTheExtSurfaceOfThePhysicalVolume(G4ThreeVector& p, G4ThreeVector& direction, |
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| 398 | G4double& costh_to_normal) |
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| 399 | { |
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| 400 | GenerateAPositionOnTheExtSurfaceOfThePhysicalVolume(p, direction); |
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| 401 | costh_to_normal = CosThDirComparedToNormal; |
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| 402 | } |
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| 403 | ///////////////////////////////////////////////////////////////////////////////////////// |
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| 404 | // |
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| 405 | void G4AdjointPosOnPhysVolGenerator::ComputeTransformationFromPhysVolToWorld() |
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| 406 | { |
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| 407 | G4VPhysicalVolume* daughter =thePhysicalVolume; |
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| 408 | G4LogicalVolume* mother = thePhysicalVolume->GetMotherLogical(); |
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| 409 | theTransformationFromPhysVolToWorld = G4AffineTransform(); |
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| 410 | G4PhysicalVolumeStore* thePhysVolStore =G4PhysicalVolumeStore::GetInstance(); |
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| 411 | while (mother){ |
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| 412 | theTransformationFromPhysVolToWorld *= |
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| 413 | G4AffineTransform(daughter->GetFrameRotation(),daughter->GetObjectTranslation()); |
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| 414 | for ( unsigned int i=0; i< thePhysVolStore->size();i++){ |
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| 415 | if ((*thePhysVolStore)[i]->GetLogicalVolume() == mother){ |
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| 416 | daughter = (*thePhysVolStore)[i]; |
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| 417 | mother =daughter->GetMotherLogical(); |
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| 418 | break; |
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| 419 | }; |
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| 420 | } |
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| 421 | } |
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| 422 | } |
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| 423 | |
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