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1 //
2 // ********************************************************************
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4 // * *
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24 // ********************************************************************
25 //
26 // G4HEPEvtInterface
27 //
28 // Class description:
29 //
30 // This is a concrete class of G4VPrimaryGenerator.
31 // It reads an ASCII file which contains particles generated by a
32 // physics generator which supports a /HEPEVT/ common block.
33 //
34 // The format of ASCII file must be equivalent to the following sample
35 // Fortran code:
36 //
37 //***********************************************************
38 // SUBROUTINE HEP2G4
39 //*
40 //* Output /HEPEVT/ event structure to G4HEPEvtInterface
41 //*
42 //***********************************************************
43 // PARAMETER (NMXHEP=2000)
44 // COMMON/HEPEVT/NEVHEP,NHEP,ISTHEP(NMXHEP),IDHEP(NMXHEP),
45 // >JMOHEP(2,NMXHEP),JDAHEP(2,NMXHEP),PHEP(5,NMXHEP),VHEP(4,NMXHEP)
46 // DOUBLE PRECISION PHEP,VHEP
47 //*
48 // WRITE(6,*) NHEP
49 // DO IHEP=1,NHEP
50 // WRITE(6,10)
51 // > ISTHEP(IHEP),IDHEP(IHEP),JDAHEP(1,IHEP),JDAHEP(2,IHEP),
52 // > PHEP(1,IHEP),PHEP(2,IHEP),PHEP(3,IHEP),PHEP(5,IHEP)
53 //10 FORMAT(I4,I10,I5,I5,4(1X,D15.8))
54 // ENDDO
55 //*
56 // RETURN
57 // END
58 //
59 // The position and time of the primary interaction must be set by the
60 // corresponding set methods of G4VPrimaryGenerator base class, otherwise
61 // zero will be set.
62
63 // Author: Makoto Asai, 1997
64 // --------------------------------------------------------------------
65 #ifndef G4HEPEvtInterface_hh
66 #define G4HEPEvtInterface_hh 1
67
68 #include <fstream>
69 #include <vector>
70
71 #include "globals.hh"
72 #include "G4VPrimaryGenerator.hh"
73 #include "G4HEPEvtParticle.hh"
74
75 class G4PrimaryVertex;
76 class G4Event;
77
78 class G4HEPEvtInterface : public G4VPrimaryGenerator
79 {
80 public:
81
82 explicit G4HEPEvtInterface(const char* evfile, G4int vl=0);
83 // Constructor, "evfile" is the file name (with directory path).
84
85 ~G4HEPEvtInterface() override = default;
86 // Destructor
87
88 void GeneratePrimaryVertex(G4Event* evt) override;
89
90 private:
91
92 G4int vLevel = 0;
93 G4String fileName;
94 std::ifstream inputFile;
95 std::vector<G4HEPEvtParticle*> HPlist;
96 };
97
98 #endif
99