vrfObjectTerrainPreloadManager.h

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



#pragma once

#include "vrfobjcore/vrfobjcoreDefines.h"
#include "terrainInterface/terrainPagingGeometry.h"
#include "vrfutil/callbackList.h"

struct DtVrfObjectTerrainPreloadArgs
{  
   DtVrfObjectTerrainPreloadArgs(DtTerrainPagingGeometryList& list, double time)
      : geometryList(list), lookaheadTime(time) {}
   DtTerrainPagingGeometryList& geometryList;
   double lookaheadTime;
};

class DT_DLL_vrfobjcore DtVrfObjectTerrainPreloadManager
{
private:

   DtVrfObjectTerrainPreloadManager(DtVrfObjectTerrainPreloadManager& orig);
   DtVrfObjectTerrainPreloadManager& operator=(DtVrfObjectTerrainPreloadManager& orig);
public:
   typedef DtCallbackList<DtVrfObjectTerrainPreloadArgs&> DtProviderCallbackList;

   DtVrfObjectTerrainPreloadManager();
   virtual ~DtVrfObjectTerrainPreloadManager();

   virtual DtTerrainPagingGeometryList preloadGeometry(double seconds);

   virtual void addProvider(DtProviderCallbackList::DtCallbackFunctionType fcn, void* usrData);
   virtual void removeProvider(DtProviderCallbackList::DtCallbackFunctionType fcn, void* usrData);

protected:
   DtProviderCallbackList myProviderCallbackList;
};