DtIndirectModelContainerForHandlers.h

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/******************************************************************************
** Copyright (c) 2023 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsgEarth/vrvOsgEarth.h>

#include <vrvUtil/DtVirtualBaseClass.h>

#include <tbb/concurrent_hash_map.h>

#include <osg/Node>

namespace makVrv
{
   class DtModelSemanticsMapper;

   class DtIndirectModelContainerForHandlers : public DtVirtualBaseClass
   {
   public:
      static DtIndirectModelContainerForHandlers& instance(DtDe& de);

      virtual ~DtIndirectModelContainerForHandlers();

      DtIndirectModelContainerForHandlers() = delete;

      DtIndirectModelContainerForHandlers(const DtIndirectModelContainerForHandlers&) = delete;

      DtIndirectModelContainerForHandlers& operator=(const DtIndirectModelContainerForHandlers&) = delete;

   protected:
      DtIndirectModelContainerForHandlers(DtDe& de);

   public:
      virtual osg::Node* getOrCreate(const std::string& modelFileName, bool forDynamicTerrain, bool addTopLevelSwitch );

      virtual const osg::Node* find(const std::string& modelFileName, bool forDynamicTerrain) const;

   protected:
      struct KeyType
      {
         std::string myModelFileName;
         bool myForDynamicTerrain = false;
      };
      struct KeyTypeHasher
      {
         size_t hash(const KeyType& key) const;
         bool equal(const KeyType& lhs, const KeyType& rhs) const;
      };

      typedef tbb::concurrent_hash_map< KeyType, osg::ref_ptr<osg::Node>, KeyTypeHasher> HashTable;
      HashTable myModels;

      DtDe& myDe;

      DtModelSemanticsMapper& myModelSematicsMapper;
   };
}