[966] | 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 1.2 2008/07/22 15:55:15 vnivanch Exp $ |
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[1007] | 27 | // GEANT4 tag $Name: geant4-09-02 $ |
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[966] | 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 G4ElementVector* theElementVector; |
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| 92 | |
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| 93 | G4int nElmMinusOne; |
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| 94 | G4int nbins; |
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| 95 | |
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| 96 | G4double cutEnergy; |
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| 97 | G4double lowEnergy; |
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| 98 | G4double highEnergy; |
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| 99 | |
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| 100 | std::vector<G4PhysicsLogVector*> xSections; |
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| 101 | |
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| 102 | }; |
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| 103 | |
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| 104 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo..... |
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| 105 | //....oooOO0OOooo........oooOO0OOooo........oooOO0OOooo........oooOO0OOooo..... |
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| 106 | |
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| 107 | inline const G4Element* G4EmElementSelector::SelectRandomAtom(G4double e) |
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| 108 | { |
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| 109 | const G4Element* elm = (*theElementVector)[nElmMinusOne]; |
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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 | elm = (*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 elm; |
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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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