DtOsgPerformanceStatsOverlay.h

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/******************************************************************************
** Copyright (c) 2012 MAK Technologies, Inc.
** All rights reserved.
******************************************************************************/


#pragma once

#include <vrvOsg/vrvOsg.h>

#include <vrvUtil/DtProfileIterator.h>

#include <string>
#include <vector>
#include <map>

namespace osg
{
   class FrameStamp;
}

#define MAX_FRAMES 60

namespace makVrv
{
   class DtOsgRenderer;
   class DtWindowTextAgent;
   class DtProfileNode;

   class DT_DLL_VRVOSG DtOsgPerformanceStatsOverlay
   {
   public:

      const static unsigned int overlayLayerId = 33;

      DtOsgPerformanceStatsOverlay(DtDe& de, DtOsgRenderer& renderer);

      void addLabel(const std::string& group, const std::string& name);

      void removeLabel(const std::string& group, const std::string& name);
      
      virtual ~DtOsgPerformanceStatsOverlay();

      virtual void updateCallback();

   protected:
      void updateGroupNodeList();
      void updateFrameTimes();
      DtWindowTextAgent* makeLine(double x, double y);
      void printLine(const std::string& line);
      bool findNodes( DtProfileNode* parent, std::string name, std::vector<DtProfileNode*>& found );
      int myCurrentLine;

      DtDe& myDe;
      DtOsgRenderer& myRenderer;

      struct StatData
      {
         std::string name;
         std::vector<DtProfileNode*> nodes;
         double totals[MAX_FRAMES];
      };

      typedef std::vector<StatData*> StatList;
      typedef std::map<std::string, StatList*> GroupMap;
      GroupMap myGroupData;
      std::vector<DtWindowTextAgent*> myLines;

      int myCurrentFrameIndex;
      int myPrevousEvictionCount;
      int myPreviousEvictionMemory;
   };
}