DtIndirectGeometryManager.h

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/******************************************************************************
** Copyright (c) 2018 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsgEarth/vrvOsgEarth.h>

#include <vrvUtil/DtVirtualBaseClass.h>
#include <boost/unordered_map.hpp>

namespace osg
{
   class Node;
}

namespace osgEarth
{
   class MapNode;
   class ModelLayer;
   class Map;
}

namespace makVrv
{
   class DtIndirectGeometryLayerManager;

   class DtTerrainPatchObject;

   class DT_DLL_VRVOSGEARTH DtIndirectGeometryManager 
      : public DtVirtualBaseClass
   {
   public:
      virtual ~DtIndirectGeometryManager();

      static DtIndirectGeometryManager& instance(DtDe& de);

   protected:
      friend class DtIndirectGeometryManagerCreator;

      DtIndirectGeometryManager(DtDe& de);

      virtual void slot_terrainPatchCreated(DtTerrainPatchObject& patch);

      friend class DtIndirectGeometryCallback;





      virtual void onLayerLoaded(const osgEarth::MapNode* mapNode, const osgEarth::ModelLayer* layer);

      virtual void onDataPreMerge(const osgEarth::Map* map, const osgEarth::ModelLayer* layer, osg::Node* newData);
      
      virtual void onDataLoaded(const osgEarth::Map* map, const osgEarth::ModelLayer* layer, const osg::Node* newData);

      virtual void onDataUnloaded(const osgEarth::Map* map, const osgEarth::ModelLayer* layer, const osg::Node* oldData);

      virtual bool isFeatureCustomModelSource(const osgEarth::ModelLayer* layer);

   protected:
      DtDe& myDe;

      typedef boost::unordered_map<const osgEarth::ModelLayer*, DtIndirectGeometryLayerManager* > MapLayerToLayerManagerIndirectGeometry;
      MapLayerToLayerManagerIndirectGeometry myMapLayerToLayerManagerIndirectGeometry;
   private:
      DtIndirectGeometryManager();
   };

   class DT_DLL_VRVOSGEARTH DtIndirectGeometryManagerCreator
      : public DtVirtualBaseClass
   {
   public:
      DtIndirectGeometryManagerCreator();

      virtual ~DtIndirectGeometryManagerCreator();

      virtual DtIndirectGeometryManager* create(DtDe& de);
   };

}