G4RayTracerSceneHandler.cc

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00027 // $Id$
00028 
00029 #include "G4RayTracerSceneHandler.hh"
00030 #include "G4VisManager.hh"
00031 
00032 G4RayTracerSceneHandler::G4RayTracerSceneHandler(G4VGraphicsSystem& system,
00033                                                  const G4String& name):
00034   G4VSceneHandler(system, fSceneIdCount++, name)
00035 {
00036   // Ray Tracer does not use the vis concept of scene (G4Scene) - keep
00037   // vis manager happy when someone opens a ray tracer with "/vis/open
00038   // RayTracer" but uses the ray tracer with "/vis/rayTracer" commands
00039   // before creating any scenes, for example, instead of using
00040   // "/vis/drawVolume"...
00041   G4VisManager* visManager = G4VisManager::GetInstance();
00042   if(visManager) {
00043     G4Scene* pScene = visManager->GetCurrentScene();
00044     if (!pScene) {
00045       // Create new scene like /vis/scene/create...
00046       fpScene = new G4Scene("dummy-ray-tracer-scene");
00047       // Add dummy run-duration model to avoid world being added and
00048       // notifyHandler being invoked...
00049       fpScene->AddWorldIfEmpty();
00050       // Add to vis manager list; ownership thereby passes to vis manager...
00051       visManager->SetSceneList().push_back(fpScene);
00052       // ...and make current...
00053       visManager->SetCurrentScene(fpScene);
00054     }
00055   }
00056 }
00057 
00058 G4RayTracerSceneHandler::~G4RayTracerSceneHandler()
00059 {}
00060 
00061 G4int G4RayTracerSceneHandler::fSceneIdCount = 0;

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