//
// ********************************************************************
// * License and Disclaimer                                           *
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//
// John Allison  6th October 2020

#if defined (G4VIS_BUILD_TOOLSSG_DRIVER) || defined (G4VIS_USE_TOOLSSG)

#ifndef G4TOOLSSGSCENEHANDLER_HH
#define G4TOOLSSGSCENEHANDLER_HH

#include "G4VSceneHandler.hh"

#include <vector>

namespace tools {namespace sg {class separator;}}
class G4ToolsSGNode;

class G4ToolsSGSceneHandler: public G4VSceneHandler {
  typedef G4VSceneHandler parent;
public:  
  G4ToolsSGSceneHandler(G4VGraphicsSystem& system,const G4String& name);
  virtual ~G4ToolsSGSceneHandler();
protected:  
  //G4ToolsSGSceneHandler(const G4ToolsSGSceneHandler& a_from):parent(a_from){}
  G4ToolsSGSceneHandler& operator=(const G4ToolsSGSceneHandler&){return *this;}
public:
  
  void PreAddSolid(const G4Transform3D& objectTransformation,
                   const G4VisAttributes&);
  void PostAddSolid();

  void BeginPrimitives2D(const G4Transform3D& objectTransformation);
  void EndPrimitives2D();

  void BeginPrimitives(const G4Transform3D& objectTransformation);
  void EndPrimitives();

  virtual void AddPrimitive(const G4Polyline&);
  virtual void AddPrimitive(const G4Scale&);
  virtual void AddPrimitive(const G4Text&);
  virtual void AddPrimitive(const G4Circle&);
  virtual void AddPrimitive(const G4Square&);
  virtual void AddPrimitive(const G4Polymarker&);
  virtual void AddPrimitive(const G4Polyhedron&);

  void ClearStore ();
  void ClearTransientStore ();
  
public:
  tools::sg::separator* ToolsSGScene() {return fpToolsSGScene;}
protected:

  void EstablishBaseNodes();

  tools::sg::separator* GetOrCreateNode();  // For next solid or primitive

  static G4int fSceneIdCount;  // Counter for Qt3D scene handlers.

  tools::sg::separator* fpToolsSGScene;
  tools::sg::separator* fpTransientObjects;
  tools::sg::separator* fpPersistentObjects;
  std::vector<G4ToolsSGNode*> fpPhysicalVolumeObjects;  // Multiple worlds

};

#endif

#endif