terrainSourcePager.h

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/*******************************************************************************
** Copyright (c) 2010 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/
#pragma once


#include <string>

#include <tbb/spin_rw_mutex.h>
#include <tbb/concurrent_queue.h>
#include <tbb/atomic.h>

#include <osg/Node>

#include <vantageTerrainImplementation/terrainPagerCommand.h>
#include <vantageTerrainImplementation/vantageTerrainImplementationDefines.h>

#include <vrfutil/terrainInterfaceConfig.h>

#include <vrvCore/DtDynamicTerrainWorld.h>

#include <boost/unordered_map.hpp>
#include <boost/optional.hpp>

class DtVantageTerrainEngine;
class DtActivePageTracker;
class DtTerrainSourceTracker;
class DtVrfSimTerrainProcessor;

typedef std::multimap<int, DtTerrainPagerCommand*> DtCommandPriorityMultimap;

class DT_DLL_vantageTerrainImplementation DtTerrainSourcePager
   : public DtTerrainInterfaceConfig
{
public:

   DtTerrainSourcePager(DtVantageTerrainEngine* terrainEngine);

   virtual ~DtTerrainSourcePager();

   virtual void tick();

   virtual DtTerrainSourceTracker* createTerrainSourceTracker(DtVantageTerrainEngine*) = 0;

   virtual DtTerrainSourceTracker* terrainSourceTracker();

   virtual void updatePageTracker(DtTerrainIntersectIDType intersectId = 0) = 0;

   virtual int highestPriorityPendingWork();

   virtual void processCommandQueue();

   virtual void setCurrentTime(const double& currentTime);

   virtual unsigned long numTriangles() const;

   virtual bool quitFlagSet() const;
   virtual void setQuit(bool);

   virtual const Coordinate_System* localCS() const;

   virtual void setLabel(const DtString&);
   virtual DtString label() const;

protected:
   class TerrainRecord
   {
   public:
      typedef boost::unordered_map<DtNodeId, TerrainRecord> Map;

      void add(const makVrv::DtDynamicTerrainWorld::FeatureHandle& h);
      void pageOut();

   protected:
      makVrv::DtDynamicTerrainWorld::FeatureHandle myFeatures;
   };

   virtual unsigned int addTerrain(const osg::ref_ptr<osg::Node>& node, DtVrfSimTerrainProcessor&);

   virtual void removeTerrain(const osg::ref_ptr<osg::Node>& node);

   typedef tbb::spin_rw_mutex Mutex;
   mutable Mutex myMutex;

   DtString myName;

   tbb::atomic<bool> myQuitFlag;

   DtVantageTerrainEngine* myTerrainEngine;

   DtTerrainSourceTracker* myTerrainSourceTracker;

   double myCurrentTime;
   
   DtPagerCommandQueue myCommandQueue;

   DtCommandPriorityMultimap myPriorityCommandMultimap;

   unsigned long myNumTriangles;

   TerrainRecord::Map myTerrainRecords;

   boost::optional<short int> myDefaultBulletObjectMask;
};