include/vantageTerrainImplementation/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 <osg/Node>

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

class DtVantageTerrainEngine;
class DtActivePageTracker;
class DtTerrainSourceTracker;

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

class DT_DLL_vantageTerrainImplementation DtTerrainSourcePager
{
public:

   DtTerrainSourcePager(DtVantageTerrainEngine* terrainEngine);

   virtual ~DtTerrainSourcePager();

   virtual void tick();

   virtual DtTerrainSourceTracker* createTerrainSourceTracker() = 0;

   virtual DtTerrainSourceTracker* terrainSourceTracker();

   virtual void updatePageTracker(const unsigned int intersectId = 0) = 0;

   virtual int highestPriorityPendingWork();

   virtual void processCommandQueue();

   virtual void setCurrentTime(const double& currentTime);

protected:

   mutable tbb::spin_rw_mutex myMutex;

   DtVantageTerrainEngine* myTerrainEngine;

   DtTerrainSourceTracker* myTerrainSourceTracker;

   double myCurrentTime;
   
   DtPagerCommandQueue myCommandQueue;

   DtCommandPriorityMultimap myPriorityCommandMultimap;
};