terrainPagerCommandFactory.h

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/*******************************************************************************
** Copyright (c) 2020 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/


#pragma once

#include <vantageTerrainImplementation/vantageTerrainImplementationDefines.h>
#include <vantageTerrainImplementation/terrainPagerCommandTypes.h>
#include <terrainInterface/terrainPagingGeometry.h>

#include <map>


class DtTerrainPagerCommand;
class DtTerrainPagerCommandFactoryEntry;


typedef DtTerrainPagerCommand* 
   (*DtTerrainPagerCommandCreatorFcn)(DtPagingMetaDataPtr);

class DT_DLL_vantageTerrainImplementation DtTerrainPagerCommandFactory
{
public:

   DtTerrainPagerCommandFactory();

   virtual ~DtTerrainPagerCommandFactory();

   void addDefaultCreatorFunctions();

   virtual void addCreatorFcn(int type,
      DtTerrainPagerCommandCreatorFcn fcn);

   virtual DtTerrainPagerCommand* createTerrainPagerCommand(int type, 
      DtPagingMetaDataPtr metaData);

   static DtTerrainPagerCommandFactory* create();

private:

   DtTerrainPagerCommandFactory(
      const DtTerrainPagerCommandFactory& orig);

   DtTerrainPagerCommandFactory& operator=(
      const DtTerrainPagerCommandFactory& orig);

protected:

   typedef std::map<int, DtTerrainPagerCommandFactoryEntry*> entryMap;
   entryMap myEntryMap;
};