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: G4PenelopeSamplingData.hh,v 1.1 2010/03/17 14:19:04 pandola Exp $ |
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27 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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28 | // |
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29 | // Author: Luciano Pandola |
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30 | // |
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31 | // History: |
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32 | // ----------- |
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33 | // 09 Dec 2009 L. Pandola 1st implementation. |
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34 | // |
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35 | // ------------------------------------------------------------------- |
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36 | // |
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37 | // Class description: |
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38 | // This is a container of data that are used for sampling algorithm |
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39 | // of Penelope08 Rayleigh scattering |
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40 | // ------------------------------------------------------------------- |
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41 | |
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42 | #ifndef G4PENELOPESAMPLINGDATA_HH |
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43 | #define G4PENELOPESAMPLINGDATA_HH 1 |
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44 | |
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45 | #include "globals.hh" |
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46 | #include "G4DataVector.hh" |
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47 | // |
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48 | //This is a container of data that are used for sampling algoritm |
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49 | // |
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50 | class G4PenelopeSamplingData |
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51 | { |
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52 | |
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53 | public: |
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54 | G4PenelopeSamplingData(G4int npoints=150); |
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55 | ~G4PenelopeSamplingData(); |
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56 | |
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57 | void AddPoint(G4double x0,G4double pac0,G4double a0,G4double b0,size_t ITTL0, |
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58 | size_t ITTU0); |
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59 | size_t GetNumberOfStoredPoints(); |
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60 | void Clear(); |
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61 | void DumpTable(); |
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62 | |
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63 | G4double GetX(size_t index); |
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64 | G4double GetPAC(size_t index); |
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65 | G4double GetA(size_t index); |
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66 | G4double GetB(size_t index); |
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67 | |
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68 | G4double SampleValue(G4double rndm); |
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69 | |
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70 | private: |
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71 | G4PenelopeSamplingData & operator=(const G4PenelopeSamplingData &right); |
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72 | G4PenelopeSamplingData(const G4PenelopeSamplingData&); |
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73 | |
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74 | //G4double xlow; |
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75 | //G4double xhigh; |
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76 | |
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77 | G4DataVector* x; //grid points, in increasing order |
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78 | G4DataVector* pac; //value of the cumulative pdf at x_i |
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79 | G4DataVector* a; // rational inverse cumulative inverse distribution parameters |
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80 | G4DataVector* b; |
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81 | |
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82 | std::vector<size_t> *ITTL; //largest j for which pac(j) < (i-1)/(np-1) |
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83 | std::vector<size_t> *ITTU; //smallest k for which pac(k) > i/(np-1) |
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84 | |
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85 | G4int np; //number of grid points |
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86 | |
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87 | |
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88 | |
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89 | }; |
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90 | |
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91 | #endif |
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92 | |
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