pagedNode2TerrainSourcePager.h

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/*******************************************************************************
** Copyright (c) 2021 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/

#pragma once



#include <vantageTerrainImplementation/terrainPagerCommand.h>
#include <vantageTerrainImplementation/boundingVolumeTerrainSourcePager.h>
#include <vantageTerrainImplementation/pagedNode2TerrainSourceTracker.h>
#include <vantageTerrainImplementation/pagedNode2Visitors.h>
#include <terrainInterface/terrainPagingGeometry.h>
#include <vlutil/vlPerformanceStats.h>
#include <osgEarth/NodeUtils>
#include <set>
#include <map>

class DT_DLL_vantageTerrainImplementation DtPagedNode2TerrainSourcePager
   : public DtBoundingVolumeTerrainSourcePager
{
public:

   DtPagedNode2TerrainSourcePager(
      DtVantageTerrainEngine* terrainEngine,
      osg::Group* mapNode,
      const DtFilename& surfaceCharacterMap);

   virtual ~DtPagedNode2TerrainSourcePager();

   virtual DtTerrainSourceTracker* createTerrainSourceTracker(DtVantageTerrainEngine*);

   virtual void updatePageTracker(DtTerrainIntersectIDType intersectId = 0);

   static DtTerrainSourcePager* terrainChooserFunction(
      osg::Node& node,
      DtVantageTerrainEngine* terrainEngine,
      const DtFilename& surfaceCharacterMap);

   virtual bool pageInGeometry(const DtTerrainPagingGeometryPtr geometry, DtTerrainIntersectIDType intersectId = 0);

   virtual int performTriangleCollectionAndAddTerrain(DtTimedSection& timer, const DtTerrainPagingGeometryPtr geometry,
      DtTerrainIntersectIDType intersectId);

   virtual int performTriangleCollectionAndAddTerrain(DtTimedSection& timer, const DtTerrainPagingGeometryPtr geometry,
      DtTerrainIntersectIDType intersectId, const std::set< osg::ref_ptr<osg::Node> > & foundNodes);
   virtual int addToTerrain(DtTimedSection& timer, const DtTerrainPagingGeometryPtr geometry,
      DtTerrainIntersectIDType intersectId, const DtNodeBoundingExtendedInfoMap& pagedInBoundingMap, DrawableMap& newDrawables);
   virtual bool pageOutNodes(std::list<DtNodeId>& nodesToRemove);
 
protected:

   DtPagedNode2TerrainSourceTracker* myPagedNode2TerrainSourceTracker;

   NodePagingRecordMap myPagedInNodes;
   NodePagingRecordMap myPagedOutNodes;
   NodePagingRecordMap myEmptyPagedInNodes;
   mutable tbb::spin_rw_mutex myPagedInNodesMutex;

   osgEarth::MapNode* myMapNode;

   DtFilename mySurfaceCharacterMap;
};