| 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: OlapGenerator.cc,v 1.4 2006/06/29 17:22:56 gunter Exp $
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| 28 | // GEANT4 tag $Name: $
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| 29 | //
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| 30 | //
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| 31 | // --------------------------------------------------------------
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| 32 | // OlapGenerator
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| 33 | //
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| 34 | // Author: Martin Liendl - Martin.Liendl@cern.ch
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| 35 | //
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| 36 | // --------------------------------------------------------------
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| 37 | //
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| 38 | #include "OlapGenerator.hh"
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| 39 | #include "G4Event.hh"
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| 40 | #include "G4VisExtent.hh"
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| 41 | #include "G4PrimaryParticle.hh"
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| 42 | #include "G4Geantino.hh"
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| 43 | #include "G4ChargedGeantino.hh"
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| 44 | #include "G4RunManager.hh"
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| 45 | #include "G4Run.hh"
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| 46 | #include "G4Event.hh"
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| 47 |
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| 48 | //#define OLAPDEBUG1
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| 49 |
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| 50 | OlapGrid::OlapGrid()
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| 51 | : count(3,0), gsize(3,3), axis(0), eventsPerRun(27)
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| 52 | {
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| 53 | Reset();
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| 54 | G4cout << "OlapGrid(): " << G4endl
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| 55 | << " gsize: " << gsize[0] << " " << gsize[1]
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| 56 | << " " << gsize[2] << G4endl;
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| 57 | }
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| 58 |
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| 59 | void OlapGrid::Next()
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| 60 | {
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| 61 | G4int out = (axis+1)%3; // outer loop
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| 62 | G4int in = (axis+2)%3; // inner loop
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| 63 | if ( !(count[in] = (count[in]+1)%gsize[in]) )
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| 64 | {
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| 65 | if( !(count[out] = (count[out]+1)%gsize[out]) )
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| 66 | {
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| 67 | axis = (axis+1)%3;
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| 68 | }
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| 69 | }
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| 70 | }
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| 71 |
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| 72 | OlapGenerator::OlapGenerator() : autoinc(false)
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| 73 | {
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| 74 | if (!ext.size())
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| 75 | {
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| 76 | ext.push_back(1);
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| 77 | ext.push_back(2);
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| 78 | ext.push_back(3);
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| 79 | }
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| 80 | /*
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| 81 | ext[0]=1.;
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| 82 | ext[1]=2.;
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| 83 | ext[2]=3.;
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| 84 | */
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| 85 | }
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| 86 |
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| 87 |
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| 88 | OlapGenerator::~OlapGenerator()
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| 89 | {
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| 90 | }
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| 91 |
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| 92 |
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| 93 | void OlapGenerator::GeneratePrimaries(G4Event * anEvent)
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| 94 | {
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| 95 | G4int out = (grid.axis+1)%3; // outer loop
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| 96 | G4int in = (grid.axis+2)%3; // inner loop
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| 97 |
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| 98 | posAB[grid.axis]=-ext[grid.axis]/2.;
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| 99 | posAB[in]=-ext[in]/2.+ext[in]/G4double(grid.gsize[in]-1)
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| 100 | *G4double(grid.count[in]);
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| 101 | posAB[out]=-ext[out]/2.+ext[out]/G4double(grid.gsize[out]-1)
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| 102 | *G4double(grid.count[out]);
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| 103 |
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| 104 | posBA = posAB;
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| 105 | posBA[grid.axis]=-posBA[grid.axis];
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| 106 |
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| 107 | G4ThreeVector dirAB, dirBA;
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| 108 | dirAB[grid.axis] = 1;
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| 109 | dirBA[grid.axis] = -1;
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| 110 |
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| 111 | #ifdef OLAPDEBUG1
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| 112 | G4int runID = G4RunManager::GetRunManager()->GetCurrentRun()->GetRunID();
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| 113 | G4int evtID = anEvent->GetEventID();
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| 114 | G4cout << "generator: "
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| 115 | << "run=" << runID << " evt=" << evtID
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| 116 | << " axis=" << grid.axis << " out=" << grid.count[out]
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| 117 | << " in=" << grid.count[in]
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| 118 | << " posAB=" << posAB
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| 119 | << " posBA=" << posBA << G4endl;
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| 120 | #endif
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| 121 |
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| 122 | // now generator 2 geantinos flying in opposite direction from A->B and B->A
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| 123 | // ==========================
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| 124 | G4ParticleDefinition* pd = G4Geantino::GeantinoDefinition();
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| 125 |
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| 126 | // create 2 opposite positioned vertices
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| 127 | G4PrimaryVertex* vertexAB =
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| 128 | new G4PrimaryVertex(posAB,0);
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| 129 | G4PrimaryVertex* vertexBA =
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| 130 | new G4PrimaryVertex(posBA,0);
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| 131 |
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| 132 | // create one geantino per vertex as primary
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| 133 | G4double mass = pd->GetPDGMass();
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| 134 | G4double energy = 1. + mass;
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| 135 | G4double pmom = std::sqrt(energy*energy-mass*mass);
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| 136 | G4double pxAB = pmom*dirAB.x();
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| 137 | G4double pyAB = pmom*dirAB.y();
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| 138 | G4double pzAB = pmom*dirAB.z();
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| 139 | G4double pxBA = pmom*dirBA.x();
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| 140 | G4double pyBA = pmom*dirBA.y();
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| 141 | G4double pzBA = pmom*dirBA.z();
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| 142 |
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| 143 | G4PrimaryParticle* particleAB = new G4PrimaryParticle(pd,pxAB,pyAB,pzAB);
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| 144 | G4PrimaryParticle* particleBA = new G4PrimaryParticle(pd,pxBA,pyBA,pzBA);
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| 145 | particleAB->SetMass( mass );
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| 146 | particleBA->SetMass( mass );
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| 147 | particleAB->SetCharge(0.);
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| 148 | particleBA->SetCharge(0.);
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| 149 | vertexAB->SetPrimary( particleAB );
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| 150 | vertexBA->SetPrimary( particleBA );
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| 151 | anEvent->AddPrimaryVertex( vertexAB );
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| 152 | anEvent->AddPrimaryVertex( vertexBA );
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| 153 |
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| 154 | // ok, set all counters to be ready for the next position
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| 155 | if (autoinc)
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| 156 | grid.Next();
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| 157 | /*
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| 158 | if ( !(count[in] = (count[in]+1)%grid[in]) ) {
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| 159 | if( !(count[out] = (count[out]+1)%grid[out]) ) {
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| 160 | axis = (axis+1)%3;
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| 161 | }
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| 162 | }
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| 163 | */
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| 164 |
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| 165 | }
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| 166 |
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| 167 |
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| 168 | void OlapGenerator::SetExtent(const G4VisExtent & anExt)
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| 169 | {
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| 170 | ext[0]=(anExt.GetXmax()-anExt.GetXmin());
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| 171 | ext[1]=(anExt.GetYmax()-anExt.GetYmin());
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| 172 | ext[2]=(anExt.GetZmax()-anExt.GetZmin());
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| 173 | for (G4int i=0; i<3; i++)
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| 174 | ext[i] += ext[i]/2000.; // enlarge by 1%
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| 175 |
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| 176 | Reset();
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| 177 |
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| 178 | }
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| 179 |
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| 180 | void OlapGenerator::SetExtent(G4double e)
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| 181 | {
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| 182 | ext[0]=e;
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| 183 | ext[1]=e;
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| 184 | ext[2]=e;
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| 185 | }
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| 186 |
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| 187 |
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| 188 | void OlapGenerator::Reset()
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| 189 | {
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| 190 | grid.Reset();
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| 191 | /*
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| 192 | for (G4int i=0; i<3; i++) {
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| 193 | count[i]=0;
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| 194 | }
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| 195 |
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| 196 | axis=0;
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| 197 | */
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| 198 | }
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| 199 |
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| 200 |
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| 201 | void OlapGenerator::SetGrid(G4int x, G4int y, G4int z)
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| 202 | {
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| 203 | if (x>2)
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| 204 | grid.gsize[0]=x;
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| 205 | else
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| 206 | G4cerr << "Warning in OlapGenerator::SetGrid(): wrong x-grid parameter: " << x << G4endl;
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| 207 |
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| 208 |
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| 209 | if (y>2)
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| 210 | grid.gsize[1]=y;
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| 211 | else
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| 212 | G4cerr << "Warning in OlapGenerator::SetGrid(): wrong y-grid parameter: " << y << G4endl;
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| 213 |
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| 214 | if (z>2)
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| 215 | grid.gsize[2]=z;
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| 216 | else
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| 217 | G4cerr << "Warning in OlapGenerator::SetGrid(): wrong z-grid parameter: " << z << G4endl;
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| 218 |
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| 219 | grid.eventsPerRun = x*y + y*z + x*z;
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| 220 | Reset();
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| 221 | }
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