Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/processes/electromagnetic/lowenergy/include/G4PenelopeSamplingData.hh

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  1 //
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 17 // *                                                                  *
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 25 //
 26 //
 27 // Author: Luciano Pandola
 28 //
 29 // History:
 30 // -----------
 31 // 09 Dec 2009   L. Pandola   1st implementation. 
 32 //
 33 // -------------------------------------------------------------------
 34 //
 35 // Class description:
 36 // This is a container of data that are used for sampling algorithm
 37 // of Penelope08 Rayleigh scattering
 38 // -------------------------------------------------------------------
 39 
 40 #ifndef G4PENELOPESAMPLINGDATA_HH
 41 #define G4PENELOPESAMPLINGDATA_HH 1
 42 
 43 #include "globals.hh"
 44 #include "G4DataVector.hh"
 45 //
 46 //This is a container of data that are used for sampling algoritm
 47 //
 48 class G4PenelopeSamplingData
 49 {
 50 public:
 51   explicit G4PenelopeSamplingData(G4int npoints=150);
 52   ~G4PenelopeSamplingData();
 53 
 54   void AddPoint(G4double x0,G4double pac0,G4double a0,G4double b0,size_t ITTL0,
 55     size_t ITTU0);
 56   size_t GetNumberOfStoredPoints();
 57   void Clear();
 58   void DumpTable();
 59   
 60   G4double GetX(size_t index);
 61   G4double GetPAC(size_t index);
 62   G4double GetA(size_t index);
 63   G4double GetB(size_t index);
 64 
 65   G4double SampleValue(G4double rndm);
 66 
 67   G4PenelopeSamplingData & operator=(const G4PenelopeSamplingData &right) = delete;
 68   G4PenelopeSamplingData(const G4PenelopeSamplingData&) = delete;
 69   
 70 private:  
 71   G4DataVector* fX; //grid points, in increasing order
 72   G4DataVector* fPAC; //value of the cumulative pdf at x_i
 73   G4DataVector* fA; // rational inverse cumulative inverse distribution parameters
 74   G4DataVector* fB;
 75   
 76   std::vector<size_t> *fITTL; //largest j for which pac(j) < (i-1)/(np-1)
 77   std::vector<size_t> *fITTU; //smallest k for which pac(k) > i/(np-1)
 78 
 79   G4int fNP; //number of grid points
 80 };
 81 
 82 #endif
 83 
 84