DtImguiDrawable.h

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/*******************************************************************************
** Copyright (c) 2017 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/


#pragma once 

#include <osg/Drawable>

#include <vrvOsg/vrvOsg.h>

namespace makVrv
{
   class DtDe;
   class DtOsgRenderer;

   class DT_DLL_VRVOSG DtImguiTweakUI
   {
   public:
      virtual void createImGui() = 0;
   };


   class DT_DLL_VRVOSG DtImguiDrawable : public osg::Drawable
   {
   public:
      DtImguiDrawable(makVrv::DtDe & de);
      virtual ~DtImguiDrawable();
      virtual void drawImplementation(osg::RenderInfo& info) const;

      void addUI(DtImguiTweakUI* ui){ myUiArray.push_back(ui); }
      void removeUI(DtImguiTweakUI* ui){
         std::vector<DtImguiTweakUI*>::iterator  iter = std::find(myUiArray.begin(), myUiArray.end(), ui);
         if (iter != myUiArray.end()){
            myUiArray.erase(iter);
         }
      }

      static DtImguiDrawable * getInstance(DtDe & de, DtOsgRenderer * renderer);
      static DtImguiDrawable * getInstance();
      bool readyToRender(){ return myReadyToRender; }
      
      virtual void releaseGLObjects(osg::State* state/* =0 */) const;

   private:
      makVrv::DtDe & myDe;
      std::vector<DtImguiTweakUI*> myUiArray;

      static DtImguiDrawable * s_ImguiInstance;
      mutable bool myReadyToRender;
   };

};