| 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: G4EmElementSelector.hh,v 1.4 2009/05/10 18:26:43 vnivanch Exp $
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| 27 | // GEANT4 tag $Name: geant4-09-03-beta-cand-01 $
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| 28 | //
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| 29 | // -------------------------------------------------------------------
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| 30 | //
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| 31 | // GEANT4 Class header file
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| 32 | //
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| 33 | //
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| 34 | // File name: G4EmElementSelector
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| 35 | //
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| 36 | // Author: Vladimir Ivanchenko
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| 37 | //
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| 38 | // Creation date: 29.05.2008
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| 39 | //
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| 40 | // Modifications:
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| 41 | //
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| 42 | //
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| 43 | // Class Description:
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| 44 | //
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| 45 | // Generic helper class for the random selection of an element
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| 46 |
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| 47 | // -------------------------------------------------------------------
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| 48 | //
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| 49 |
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| 50 | #ifndef G4EmElementSelector_h
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| 51 | #define G4EmElementSelector_h 1
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| 52 |
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| 53 | #include "globals.hh"
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| 54 | #include "G4ParticleDefinition.hh"
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| 55 | #include "G4Material.hh"
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| 56 | #include "G4Element.hh"
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| 57 | #include "G4ElementVector.hh"
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| 58 | #include "G4PhysicsLogVector.hh"
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| 59 | #include "Randomize.hh"
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| 60 | #include <vector>
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| 61 |
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| 62 | class G4VEmModel;
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| 63 |
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| 64 | class G4EmElementSelector
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| 65 | {
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| 66 |
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| 67 | public:
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| 68 |
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| 69 | G4EmElementSelector(G4VEmModel*, const G4Material*, G4int bins,
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| 70 | G4double emin, G4double emax,
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| 71 | G4bool spline = true);
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| 72 |
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| 73 | ~G4EmElementSelector();
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| 74 |
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| 75 | void Initialise(const G4ParticleDefinition*, G4double cut = 0.0);
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| 76 |
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| 77 | void Dump(const G4ParticleDefinition* p = 0);
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| 78 |
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| 79 | inline const G4Element* SelectRandomAtom(G4double kineticEnergy);
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| 80 |
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| 81 | inline const G4Material* GetMaterial() const;
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| 82 |
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| 83 | private:
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| 84 |
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| 85 | // hide assignment operator
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| 86 | G4EmElementSelector & operator=(const G4EmElementSelector &right);
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| 87 | G4EmElementSelector(const G4EmElementSelector&);
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| 88 |
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| 89 | G4VEmModel* model;
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| 90 | const G4Material* material;
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| 91 | const G4Element* element;
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| 92 | const G4ElementVector* theElementVector;
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| 93 |
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| 94 | G4int nElmMinusOne;
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| 95 | G4int nbins;
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| 96 |
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| 97 | G4double cutEnergy;
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| 98 | G4double lowEnergy;
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| 99 | G4double highEnergy;
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| 100 |
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| 101 | std::vector<G4PhysicsLogVector*> xSections;
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| 102 |
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| 103 | };
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| 104 |
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| 105 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
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| 106 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
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| 107 |
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| 108 | inline const G4Element* G4EmElementSelector::SelectRandomAtom(G4double e)
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| 109 | {
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| 110 | if (nElmMinusOne > 0) {
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| 111 | G4bool b;
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| 112 | G4double x = G4UniformRand();
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| 113 | for(G4int i=0; i<nElmMinusOne; i++) {
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| 114 | if (x <= (xSections[i])->GetValue(e,b)) {
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| 115 | element = (*theElementVector)[i];
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| 116 | break;
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| 117 | }
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| 118 | }
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| 119 | }
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| 120 | return element;
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| 121 | }
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| 122 |
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| 123 | inline const G4Material* G4EmElementSelector::GetMaterial() const
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| 124 | {
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| 125 | return material;
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| 126 | }
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| 127 |
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| 128 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo.....
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| 129 |
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| 130 | #endif
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| 131 |
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