| Geant4 Cross Reference |
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25 //
26 //
27 //
28 //
29 // John Allison 5th April 2001
30 // A base class for a scene handler to dump geometry hierarchy.
31 // Based on a provisional G4VTreeGraphicsScene (was in modeling).
32
33 #include "G4VTreeSceneHandler.hh"
34
35 #include "G4VSolid.hh"
36 #include "G4PhysicalVolumeModel.hh"
37 #include "G4VPhysicalVolume.hh"
38 #include "G4LogicalVolume.hh"
39
40 #define G4warn G4cout
41
42 G4int G4VTreeSceneHandler::fSceneIdCount = 0;
43 // Counter for Tree scene handlers.
44
45 G4VTreeSceneHandler::G4VTreeSceneHandler(G4VGraphicsSystem& system,
46 const G4String& name):
47 G4VSceneHandler(system, fSceneIdCount++, name),
48 fpCurrentObjectTransformation (0)
49 {}
50
51 G4VTreeSceneHandler::~G4VTreeSceneHandler () {}
52
53 void G4VTreeSceneHandler::BeginModeling() {
54 G4VSceneHandler::BeginModeling(); // Required: see G4VSceneHandler.hh.
55 }
56
57 void G4VTreeSceneHandler::EndModeling() {
58 fDrawnLVStore.clear();
59 G4VSceneHandler::EndModeling(); // Required: see G4VSceneHandler.hh.
60 }
61
62 void G4VTreeSceneHandler::PreAddSolid
63 (const G4Transform3D& objectTransformation, const G4VisAttributes& visAttribs)
64 {
65 G4VSceneHandler::PreAddSolid (objectTransformation, visAttribs);
66
67 G4PhysicalVolumeModel* pPVModel =
68 dynamic_cast<G4PhysicalVolumeModel*>(fpModel);
69 if (!pPVModel) return; // Not from a G4PhysicalVolumeModel.
70
71 // This call comes from a G4PhysicalVolumeModel, drawnPVPath is
72 // the path of the current drawn (non-culled) volume in terms of
73 // drawn (non-culled) ancestors. Each node is identified by a
74 // PVNodeID object, which is a physical volume and copy number. It
75 // is a vector of PVNodeIDs corresponding to the geometry hierarchy
76 // actually selected, i.e., not culled.
77 typedef G4PhysicalVolumeModel::G4PhysicalVolumeNodeID PVNodeID;
78 typedef std::vector<PVNodeID> PVPath;
79 const PVPath& drawnPVPath = pPVModel->GetDrawnPVPath();
80 //G4int currentDepth = pPVModel->GetCurrentDepth();
81 //G4VPhysicalVolume* pCurrentPV = pPVModel->GetCurrentPV();
82 //G4LogicalVolume* pCurrentLV = pPVModel->GetCurrentLV();
83 //G4Material* pCurrentMaterial = pPVModel->GetCurrentMaterial();
84
85 // Actually, it is enough to store the logical volume of current
86 // physical volume...
87 fDrawnLVStore.insert
88 (drawnPVPath.back().GetPhysicalVolume()->GetLogicalVolume());
89
90 // Find mother. ri points to drawn mother, if any.
91 PVPath::const_reverse_iterator ri = ++drawnPVPath.rbegin();
92 if (ri != drawnPVPath.rend()) {
93 // This volume has a mother.
94 G4LogicalVolume* drawnMotherLV =
95 ri->GetPhysicalVolume()->GetLogicalVolume();
96 if (fDrawnLVStore.find(drawnMotherLV) != fDrawnLVStore.end()) {
97 // Mother previously encountered. Add this volume to
98 // appropriate node in scene graph tree.
99 // ...
100 } else {
101 // Mother not previously encountered. Shouldn't happen, since
102 // G4PhysicalVolumeModel sends volumes as it encounters them,
103 // i.e., mothers before daughters, in its descent of the
104 // geometry tree. Error!
105 G4warn << "ERROR: G4VTreeSceneHandler::PreAddSolid: Mother "
106 << ri->GetPhysicalVolume()->GetName()
107 << ':' << ri->GetCopyNo()
108 << " not previously encountered."
109 "\nShouldn't happen! Please report to visualization coordinator."
110 << G4endl;
111 // Continue anyway. Add to root of scene graph tree.
112 // ...
113 }
114 } else {
115 // This volume has no mother. Must be a top level un-culled
116 // volume. Add to root of scene graph tree.
117 // ...
118 }
119 }
120