| Geant4 Cross Reference |
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25 //
26 //
27 // -------------------------------------------------------------------
28 // GEANT4 Class file
29 //
30 // For information related to this code contact:
31 //
32 // File name: G4CrossSectionComposite
33 //
34 // Author:
35 //
36 // Creation date: 15 April 1999
37 //
38 // Modifications:
39 //
40 // -------------------------------------------------------------------
41
42 #include "globals.hh"
43 #include "G4CrossSectionComposite.hh"
44 #include "G4VCrossSectionSource.hh"
45 #include "G4KineticTrack.hh"
46 #include "G4CrossSectionVector.hh"
47
48 G4CrossSectionComposite::G4CrossSectionComposite()
49 { }
50
51
52 G4CrossSectionComposite::~G4CrossSectionComposite()
53 { }
54
55
56 G4bool G4CrossSectionComposite::operator==(const G4CrossSectionComposite &right) const
57 {
58 return (this == (G4CrossSectionComposite*) &right);
59 }
60
61
62 G4bool G4CrossSectionComposite::operator!=(const G4CrossSectionComposite &right) const
63 {
64 return (this != (G4CrossSectionComposite*) &right);
65 }
66
67
68 G4double G4CrossSectionComposite::CrossSection(const G4KineticTrack& trk1,
69 const G4KineticTrack& trk2) const
70 {
71 // Cross section of composite is the sum of components cross sections
72
73 G4double crossSection = 0.;
74 G4double ecm = (trk1.Get4Momentum() + trk2.Get4Momentum()).mag();
75
76 const G4CrossSectionVector* components = GetComponents();
77 if (components != 0)
78 {
79 std::size_t nComponents = GetComponents()->size();
80 for (std::size_t i=0; i<nComponents; ++i)
81 {
82 G4CrossSectionSourcePtr componentPtr = (*components)[i];
83 G4VCrossSectionSource* component = componentPtr();
84 if (component->IsValid(ecm))
85 {
86 crossSection += component->CrossSection(trk1,trk2);
87 }
88 }
89 }
90 return crossSection;
91 }
92
93
94 G4bool G4CrossSectionComposite::IsValid(G4double e) const
95 {
96 // The composite is valid if any of its components are valid
97 G4bool answer = false;
98 const G4CrossSectionVector* components = GetComponents();
99 if (components != 0)
100 {
101 std::size_t n = components->size();
102 for (std::size_t i=0; i<n; ++i)
103 {
104 G4CrossSectionSourcePtr componentPtr = (*components)[i];
105 G4VCrossSectionSource* component = componentPtr();
106 if (component->IsValid(e))
107 {
108 answer = true;
109 break;
110 }
111 }
112 }
113 return answer;
114 }
115
116