include/Geant4/G4PenelopeSamplingData.hh

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0025 //
0026 //
0027 // Author: Luciano Pandola
0028 //
0029 // History:
0030 // -----------
0031 // 09 Dec 2009   L. Pandola   1st implementation.
0032 //
0033 // -------------------------------------------------------------------
0034 //
0035 // Class description:
0036 // This is a container of data that are used for sampling algorithm
0037 // of Penelope08 Rayleigh scattering
0038 // -------------------------------------------------------------------
0039
0040 #ifndef G4PENELOPESAMPLINGDATA_HH
0041 #define G4PENELOPESAMPLINGDATA_HH 1
0042
0043 #include "globals.hh"
0044 #include "G4DataVector.hh"
0045 //
0046 //This is a container of data that are used for sampling algoritm
0047 //
0048 class G4PenelopeSamplingData
0049 {
0050 public:
0051   explicit G4PenelopeSamplingData(G4int npoints=150);
0052   ~G4PenelopeSamplingData();
0053
0054   void AddPoint(G4double x0,G4double pac0,G4double a0,G4double b0,size_t ITTL0,
0055         size_t ITTU0);
0056   size_t GetNumberOfStoredPoints();
0057   void Clear();
0058   void DumpTable();
0059
0060   G4double GetX(size_t index);
0061   G4double GetPAC(size_t index);
0062   G4double GetA(size_t index);
0063   G4double GetB(size_t index);
0064
0065   G4double SampleValue(G4double rndm);
0066
0067   G4PenelopeSamplingData & operator=(const G4PenelopeSamplingData &right) = delete;
0068   G4PenelopeSamplingData(const G4PenelopeSamplingData&) = delete;
0069
0070 private:
0071   G4DataVector* fX; //grid points, in increasing order
0072   G4DataVector* fPAC; //value of the cumulative pdf at x_i
0073   G4DataVector* fA; // rational inverse cumulative inverse distribution parameters
0074   G4DataVector* fB;
0075
0076   std::vector<size_t> *fITTL; //largest j for which pac(j) < (i-1)/(np-1)
0077   std::vector<size_t> *fITTU; //smallest k for which pac(k) > i/(np-1)
0078
0079   G4int fNP; //number of grid points
0080 };
0081
0082 #endif
0083