include/Geant4/G4ChannelingFastSimInterpolation.hh

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0025 //
0026 // Author:      Alexei Sytov
0027
0028 #ifndef G4ChannelingFastSimInterpolation_h
0029 #define G4ChannelingFastSimInterpolation_h
0030
0031 #include "G4PhysicsVector.hh"
0032 #include "G4Physics2DVector.hh"
0033 #include "G4ThreeVector.hh"
0034 #include "G4PhysicsLinearVector.hh"
0035
0036 /** \file G4ChannelingFastSimInterpolation.hh
0037 * \brief Definition of the G4ChannelingFastSimInterpolation class
0038 * The class includes spline interpolation coefficients for the important functions
0039 * needed in Channeling FastSimulation model, i.e. electric fields, nuclear and
0040 * electron densities and minimum energy of ionization. All the functions have
0041 * transverse coordinates as arguments (x for crystal planes, x and y for crystal axes).
0042 * All the functions are calculated in the co-rotating reference system (along crystal
0043 * planes/axes).
0044 */
0045
0046 class G4ChannelingFastSimInterpolation {
0047
0048 public:
0049     G4ChannelingFastSimInterpolation(G4double dx0,
0050                                    G4double dy0,
0051                                    G4int nPointsx0,
0052                                    G4int nPointsy0,
0053                                    G4int iModel0);
0054     ~G4ChannelingFastSimInterpolation() = default;
0055
0056     ///Get Spline Function
0057     G4double GetIF(G4double xx, G4double yy);
0058
0059     ///Set spline coefficients
0060     void SetCoefficients1D(G4double AI0,
0061                            G4double BI0,
0062                            G4double CI0,
0063                            G4double DI0,
0064                            G4int i);
0065     void SetCoefficients2D(G4double AI3D0,
0066                            G4double BI3D0,
0067                            G4double CI3D0,
0068                            G4int i,
0069                            G4int j,
0070                            G4int k);
0071
0072 private:
0073     G4double Spline1D(G4double xx);
0074     G4double Spline2D(G4double xx, G4double yy);// cubic spline of 2-variable function
0075
0076     G4double fDx=0., fDy=0.; //channel width and height
0077     G4double fStepi=0., fStepj=0.; //interpolation steps in x and y, respectively
0078     G4double fStepi2=0.; //=fStepi*fStepi
0079     G4int nPointsx=0, nPointsy=0; //number of interpolation nodes in x and y, respectively
0080
0081     std::vector <G4double> fAI;
0082     std::vector <G4double> fBI;
0083     std::vector <G4double> fCI;
0084     std::vector <G4double> fDI;
0085
0086     std::vector<std::vector<G4double>> fAI3D;
0087     std::vector<std::vector<G4double>> fBI3D;
0088     std::vector<std::vector<G4double>> fCI3D;
0089     std::vector<std::vector<G4double>> fAI3D3;
0090     std::vector<std::vector<G4double>> fBI3D3;
0091     std::vector<std::vector<G4double>> fCI3D3;
0092
0093     G4int iModel=1;
0094
0095 };
0096
0097 #endif