include/vrvCore/DtCachedIntersectorManager.h

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/******************************************************************************
** Copyright (c) 2010 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/
/******************************************************************************
** $RCSfile: DtCachedIntersectorManager.h,v $ $Revision: 1.9 $ $State: Exp $
******************************************************************************/


#pragma once
#include <vrvCore/vrvCore.h>
#include <vrvCore/DtIntersector.h>
#include <boost/unordered_map.hpp>

#include <matrix/vlVector.h>
#include <map>

namespace makVrv
{   
   class DtIntersectorCache;
   class DtCachedIntersector;

   class DT_DLL_VRVCORE DtCachedIntersectorManager : public DtVirtualBaseClass
   {
   public:
      virtual ~DtCachedIntersectorManager();

      static DtCachedIntersectorManager& instance(DtDe& de);

      static void registerInstance(DtDe& de, DtCachedIntersectorManager* anInstance);     

      DtCachedIntersector& modelSetIntersector(int modelSet);

      virtual void setShareIntersectionResults(bool);
      bool shareIntersectionResults() const;

      virtual void setCacheIsPermanent(bool);
      
      bool cacheIsPermanent() const;

      virtual void setCacheLimit(int);

      int cacheLimit() const;

      virtual void setCacheClearTime(double);

      double cacheClearTime() const;

   protected:
      virtual void onPostTick();

      DtCachedIntersectorManager(DtDe& de);

   protected:
      typedef boost::unordered_map<int, DtCachedIntersector*> IntersectorMap;
      DtDe& myDe;
      IntersectorMap myIntersectors;

      bool myCacheIsPermanent;
      double myClearTime;
      double myLastClearTime;
      int myCacheLimit;
      DtIntersectorCache* myCache;
   };
}