[1316] | 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 | #include "TstDrawVox01PrimaryGeneratorAction.hh" |
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| 28 | |
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| 29 | #include "TstDrawVox01PrimaryGeneratorMessenger.hh" |
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| 30 | #include "G4Event.hh" |
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| 31 | #include "G4ParticleGun.hh" |
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| 32 | #include "G4ParticleTable.hh" |
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| 33 | #include "G4ParticleDefinition.hh" |
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| 34 | #include "G4TransportationManager.hh" |
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| 35 | #include "globals.hh" |
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| 36 | #include "CLHEP/Random/RandFlat.h" |
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| 37 | |
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| 38 | TstDrawVox01PrimaryGeneratorAction::TstDrawVox01PrimaryGeneratorAction(): |
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| 39 | generatorAction (standardGun), |
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| 40 | particleGun (0), |
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| 41 | messenger (0), |
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| 42 | worldVolume (0) |
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| 43 | { |
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| 44 | G4int n_particle = 1; |
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| 45 | particleGun = new G4ParticleGun(n_particle); |
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| 46 | |
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| 47 | // default particle |
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| 48 | |
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| 49 | G4ParticleTable* particleTable = G4ParticleTable::GetParticleTable(); |
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| 50 | G4String particleName; |
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| 51 | G4ParticleDefinition* particle |
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| 52 | = particleTable->FindParticle(particleName="e-"); |
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| 53 | particleGun->SetParticleDefinition(particle); |
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| 54 | particleGun->SetParticleMomentumDirection(G4ThreeVector(1.,0.,0.)); |
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| 55 | particleGun->SetParticleEnergy(1.*GeV); |
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| 56 | particleGun->SetParticlePosition(G4ThreeVector(0.*cm,0.*cm,0.*cm)); |
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| 57 | |
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| 58 | // messenger |
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| 59 | |
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| 60 | messenger = new TstDrawVox01PrimaryGeneratorMessenger (this); |
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| 61 | |
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| 62 | // world extent |
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| 63 | |
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| 64 | worldVolume = G4TransportationManager::GetTransportationManager () |
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| 65 | -> GetNavigatorForTracking () -> GetWorldVolume (); |
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| 66 | if (worldVolume) worldExtent = worldVolume -> GetLogicalVolume () |
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| 67 | -> GetSolid () -> GetExtent (); |
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| 68 | |
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| 69 | } |
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| 70 | |
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| 71 | TstDrawVox01PrimaryGeneratorAction::~TstDrawVox01PrimaryGeneratorAction() |
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| 72 | { |
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| 73 | delete particleGun; |
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| 74 | delete messenger; |
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| 75 | } |
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| 76 | |
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| 77 | void TstDrawVox01PrimaryGeneratorAction::SelectPrimaryGeneratorAction |
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| 78 | (Action action) |
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| 79 | { |
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| 80 | generatorAction = action; |
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| 81 | } |
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| 82 | |
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| 83 | void TstDrawVox01PrimaryGeneratorAction::GeneratePrimaries(G4Event* anEvent) |
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| 84 | { |
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| 85 | G4VPhysicalVolume* currentWorldVolume; |
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| 86 | |
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| 87 | double costheta; |
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| 88 | double sintheta; |
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| 89 | double phi; |
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| 90 | double cosphi; |
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| 91 | double sinphi; |
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| 92 | |
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| 93 | switch (generatorAction) { |
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| 94 | |
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| 95 | case standardGun: |
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| 96 | |
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| 97 | particleGun->GeneratePrimaryVertex(anEvent); |
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| 98 | break; |
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| 99 | |
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| 100 | case randomDirectionGun: |
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| 101 | |
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| 102 | costheta = CLHEP::RandFlat::shoot (-1., 1.); |
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| 103 | sintheta = std::sqrt (1. - costheta * costheta); |
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| 104 | phi = CLHEP::RandFlat::shoot (twopi); |
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| 105 | cosphi = std::cos (phi); |
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| 106 | sinphi = std::sin (phi); |
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| 107 | particleGun->SetParticleMomentumDirection |
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| 108 | (G4ThreeVector (sintheta * cosphi, sintheta * sinphi, costheta)); |
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| 109 | |
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| 110 | particleGun->GeneratePrimaryVertex(anEvent); |
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| 111 | break; |
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| 112 | |
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| 113 | case randomPositionGun: |
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| 114 | |
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| 115 | // Check if world is in place or has changed. |
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| 116 | currentWorldVolume = |
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| 117 | G4TransportationManager::GetTransportationManager () |
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| 118 | -> GetNavigatorForTracking () -> GetWorldVolume (); |
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| 119 | if (!worldVolume || worldVolume != currentWorldVolume) { |
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| 120 | worldVolume = currentWorldVolume; |
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| 121 | if (worldVolume) worldExtent = worldVolume -> GetLogicalVolume () |
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| 122 | -> GetSolid () -> GetExtent (); |
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| 123 | } |
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| 124 | |
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| 125 | particleGun->SetParticlePosition |
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| 126 | (G4ThreeVector |
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| 127 | (CLHEP::RandFlat::shoot (worldExtent.GetXmin (), worldExtent.GetXmax ()), |
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| 128 | CLHEP::RandFlat::shoot (worldExtent.GetYmin (), worldExtent.GetYmax ()), |
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| 129 | CLHEP::RandFlat::shoot (worldExtent.GetZmin (), worldExtent.GetZmax ()))); |
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| 130 | |
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| 131 | particleGun->GeneratePrimaryVertex(anEvent); |
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| 132 | break; |
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| 133 | |
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| 134 | case randomPositionAndDirectionGun: |
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| 135 | |
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| 136 | // Check if world is in place or has changed. |
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| 137 | currentWorldVolume = |
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| 138 | G4TransportationManager::GetTransportationManager () |
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| 139 | -> GetNavigatorForTracking () -> GetWorldVolume (); |
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| 140 | if (!worldVolume || worldVolume != currentWorldVolume) { |
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| 141 | worldVolume = currentWorldVolume; |
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| 142 | if (worldVolume) worldExtent = worldVolume -> GetLogicalVolume () |
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| 143 | -> GetSolid () -> GetExtent (); |
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| 144 | } |
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| 145 | |
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| 146 | particleGun->SetParticlePosition |
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| 147 | (G4ThreeVector |
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| 148 | (CLHEP::RandFlat::shoot (worldExtent.GetXmin (), worldExtent.GetXmax ()), |
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| 149 | CLHEP::RandFlat::shoot (worldExtent.GetYmin (), worldExtent.GetYmax ()), |
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| 150 | CLHEP::RandFlat::shoot (worldExtent.GetZmin (), worldExtent.GetZmax ()))); |
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| 151 | |
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| 152 | costheta = CLHEP::RandFlat::shoot (-1., 1.); |
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| 153 | sintheta = std::sqrt (1. - costheta * costheta); |
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| 154 | phi = CLHEP::RandFlat::shoot (twopi); |
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| 155 | cosphi = std::cos (phi); |
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| 156 | sinphi = std::sin (phi); |
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| 157 | particleGun->SetParticleMomentumDirection |
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| 158 | (G4ThreeVector (sintheta * cosphi, sintheta * sinphi, costheta)); |
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| 159 | |
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| 160 | particleGun->GeneratePrimaryVertex(anEvent); |
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| 161 | break; |
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| 162 | |
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| 163 | } |
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| 164 | } |
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