Geant4 Cross Reference

Cross-Referencing   Geant4
Geant4/visualization/ToolsSG/src/G4ToolsSGXtGLES.cc

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  1 //
  2 // ********************************************************************
  3 // * License and Disclaimer                                           *
  4 // *                                                                  *
  5 // * The  Geant4 software  is  copyright of the Copyright Holders  of *
  6 // * the Geant4 Collaboration.  It is provided  under  the terms  and *
  7 // * conditions of the Geant4 Software License,  included in the file *
  8 // * LICENSE and available at  http://cern.ch/geant4/license .  These *
  9 // * include a list of copyright holders.                             *
 10 // *                                                                  *
 11 // * Neither the authors of this software system, nor their employing *
 12 // * institutes,nor the agencies providing financial support for this *
 13 // * work  make  any representation or  warranty, express or implied, *
 14 // * regarding  this  software system or assume any liability for its *
 15 // * use.  Please see the license in the file  LICENSE  and URL above *
 16 // * for the full disclaimer and the limitation of liability.         *
 17 // *                                                                  *
 18 // * This  code  implementation is the result of  the  scientific and *
 19 // * technical work of the GEANT4 collaboration.                      *
 20 // * By using,  copying,  modifying or  distributing the software (or *
 21 // * any work based  on the software)  you  agree  to acknowledge its *
 22 // * use  in  resulting  scientific  publications,  and indicate your *
 23 // * acceptance of all terms of the Geant4 Software license.          *
 24 // ********************************************************************
 25 //
 26 // Guy Barrand 12th March 2021
 27 
 28 #include "G4ToolsSGXtGLES.hh"
 29 
 30 #include "G4ToolsSGViewer.hh"
 31 #include <toolx/Xt/sg_viewer>
 32 
 33 #include "G4Xt.hh"
 34 
 35 class session : public toolx::Xt::session {
 36   using parent = toolx::Xt::session;
 37 public:
 38   session(std::ostream& a_out)
 39   :parent(a_out)
 40   {
 41     m_app_widget = (Widget)G4Xt::getInstance()->GetMainInteractor();
 42     m_app_context = ::XtWidgetToApplicationContext(m_app_widget);
 43     m_app_owner = false;
 44   }
 45   virtual ~session() {}
 46 protected:
 47   session(const session& a_from):parent(a_from){}
 48   session& operator=(const session& a_from){parent::operator=(a_from);return *this;}
 49 };
 50 
 51 G4ToolsSGXtGLES::G4ToolsSGXtGLES():
 52 parent
 53 ("TOOLSSG_XT_GLES",
 54  "TSG_XT_GLES",
 55  "TOOLSSG_XT_GLES is a graphics driver based on the g4tools tools/sg scene graph logic where\n\
 56  the rendering is done with GLES and the windowing is done with the Xt toolkit.",
 57  parent::threeDInteractive)
 58 ,fSGSession(nullptr)
 59 {}
 60 
 61 G4ToolsSGXtGLES::~G4ToolsSGXtGLES() {
 62   delete fSGSession;
 63 }
 64 
 65 void G4ToolsSGXtGLES::Initialise() {
 66   if(fSGSession) return; //done.
 67   fSGSession = new session(G4cout);
 68   if(!fSGSession->is_valid()) {
 69     G4cerr << "G4ToolsSGXtGLES::Initialise : session::is_valid() failed." << G4endl;
 70     delete fSGSession;
 71     fSGSession = nullptr;
 72     return;
 73   }
 74 }
 75 
 76 G4VSceneHandler* G4ToolsSGXtGLES::CreateSceneHandler(const G4String& a_name) {
 77   G4VSceneHandler* pScene = new G4ToolsSGSceneHandler(*this, a_name);
 78   return pScene;
 79 }
 80 
 81 G4VViewer* G4ToolsSGXtGLES::CreateViewer(G4VSceneHandler& a_scene,const G4String& a_name) {
 82   if(!fSGSession) Initialise();
 83   if(!fSGSession) return nullptr;
 84   G4VViewer* pView =
 85     new G4ToolsSGViewer<toolx::Xt::session,toolx::Xt::sg_viewer>(*fSGSession,(G4ToolsSGSceneHandler&)a_scene,a_name);
 86   if (pView) {
 87     if (pView->GetViewId() < 0) {
 88       G4cerr <<
 89       "G4ToolsSGXtGLES::CreateViewer: ERROR flagged by negative"
 90       " view id in G4ToolsSGViewer creation."
 91       "\n Destroying view and returning null pointer."
 92       << G4endl;
 93       delete pView;
 94       pView = nullptr;
 95     }
 96   }
 97   if (!pView) {
 98     G4cerr <<
 99     "G4ToolsSGXtGLES::CreateViewer: ERROR: null pointer on new G4ToolsSGViewer."
100     << G4endl;
101   }
102   return pView;
103 }
104