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25 //
26 // Guy Barrand 09th June 2022
27
28 #include "G4ToolsSGOffscreen.hh"
29
30 #include "G4ToolsSGOffscreenViewer.hh"
31
32 #include <tools/offscreen/sg_viewer>
33
34 G4ToolsSGOffscreen::G4ToolsSGOffscreen():
35 parent
36 ("TOOLSSG_OFFSCREEN",
37 "TSG_OFFSCREEN",
38 "TOOLSSG_OFFSCREEN is a graphics driver based on the g4tools tools/sg scene graph logic where\n\
39 the rendering is done by using various offscreen library as tools/sg/zb, gl2ps, png, jpeg.",
40 parent::threeDInteractive)
41 ,fSGSession(nullptr)
42 {}
43
44 G4ToolsSGOffscreen::~G4ToolsSGOffscreen() {
45 delete fSGSession;
46 }
47
48 void G4ToolsSGOffscreen::Initialise() {
49 if(fSGSession) return; //done.
50 fSGSession = new tools::offscreen::session(G4cout);
51 if(!fSGSession->is_valid()) {
52 G4cerr << "G4ToolsSGOffscreen::Initialise : session::is_valid() failed." << G4endl;
53 delete fSGSession;
54 fSGSession = nullptr;
55 return;
56 }
57 }
58
59 G4VSceneHandler* G4ToolsSGOffscreen::CreateSceneHandler(const G4String& a_name) {
60 G4VSceneHandler* pScene = new G4ToolsSGSceneHandler(*this,a_name);
61 return pScene;
62 }
63
64 G4VViewer* G4ToolsSGOffscreen::CreateViewer(G4VSceneHandler& a_scene,const G4String& a_name) {
65 if(!fSGSession) Initialise();
66 if(!fSGSession) return nullptr;
67 G4VViewer* pView = new G4ToolsSGOffscreenViewer(*fSGSession,(G4ToolsSGSceneHandler&)a_scene,a_name);
68 if (pView) {
69 if (pView->GetViewId() < 0) {
70 G4cerr <<
71 "G4ToolsSGOffscreen::CreateViewer: ERROR flagged by negative"
72 " view id in G4ToolsSGViewer creation."
73 "\n Destroying view and returning null pointer."
74 << G4endl;
75 delete pView;
76 pView = nullptr;
77 }
78 }
79 if (!pView) {
80 G4cerr <<
81 "G4ToolsSGOffscreen::CreateViewer: ERROR: null pointer on new G4ToolsSGViewer."
82 << G4endl;
83 }
84 return pView;
85 }
86