pageInVisitor.h

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



#pragma once

#include <vantageTerrainImplementation/vantageTerrainImplementationDefines.h>
#include <vantageTerrainImplementation/vantageTerrainImplementationUtil.h>
#include <terrainInterface/terrainPagingGeometry.h>
#include <vlutil/vlPrint.h>

#include <osg/Vec3>
#include <osg/NodeVisitor>
#include <geometry/chord.h>
#include <list>
#include <geometry/sphere.h>

class Coordinate_System;

namespace osgDB
{
   class Options;
   class MatrixTransform;
}

namespace osgEarth
{
   namespace Contrib
   {
      namespace ThreeDTiles
      {
         class ThreeDTileNode;
         class ThreeDTilesetNode;
         class ThreeDTilesetContentNode;
      }
   }
}
class DT_DLL_vantageTerrainImplementation DtMaintainMatrixVisitor : public osg::NodeVisitor
{
public:
   using osg::NodeVisitor::apply;

   DtMaintainMatrixVisitor();
   explicit DtMaintainMatrixVisitor(const osg::Matrix&);

   virtual void apply(osg::Transform& node) override;

protected:
   virtual osg::BoundingSphere worldRefNodeBounds(osg::Node& node);
   
protected:
   osg::Matrix myMatrix;
};

class DT_DLL_vantageTerrainImplementation DtPageInVisitor : public DtMaintainMatrixVisitor
{
public:
   using DtMaintainMatrixVisitor::apply;

   DtPageInVisitor();
   explicit DtPageInVisitor(const osg::Matrix&);
   virtual void apply(osg::LOD& node) override;
   virtual void apply(osg::PagedLOD& node) override;

   const NodePagingRecords& pagedInNodes() const { return myPagedInNodes; }

protected:
   virtual bool requiresPageIn(const osg::BoundingSphere&);

   virtual osg::Node* getNode(const std::string& filepath, const osgDB::Options*, bool& valid);

   virtual bool shouldExit() const;

   NodePagingRecords myPagedInNodes;
};

class DT_DLL_vantageTerrainImplementation DtGeometryPageInVisitor : public DtPageInVisitor
{
public:
   DtGeometryPageInVisitor(const Coordinate_System* cs, const DtTerrainPagingGeometryPtr geometry);
   DtGeometryPageInVisitor(const Coordinate_System* cs, DtTerrainPagingGeometryPtr geometry, const osg::Matrix&);

   DtTerrainPagingGeometryPtr getGeometry() { return myGeometry; };
protected:
   virtual bool requiresPageIn(const osg::BoundingSphere&) override;

   DtTerrainPagingGeometryPtr myGeometry;
   const Coordinate_System* myCoordinateSystem;
};

class DT_DLL_vantageTerrainImplementation DtInspectorVisitor : public DtMaintainMatrixVisitor
{
public:
   using DtMaintainMatrixVisitor::apply;

   DtInspectorVisitor();
   DtInspectorVisitor(DtOutputStream & os);
   virtual void apply(osg::Node& node) override;
   virtual void apply(osg::Group& node) override;
   virtual void apply(osg::Geode& node) override;
   virtual void apply(osg::LOD& node) override;
   virtual void apply(osg::PagedLOD& node) override;
   //virtual void apply(osg::CoordinateSystemNode& node);

protected:
   virtual std::string indent();
   virtual std::string printBoundingInfo(osg::Node& node);

   int myIndentLevel;
   int myChildNumber;
   DtOutputStream& myOutputStream;
protected:
};


class DT_DLL_vantageTerrainImplementation DtTerrainIsPagingVisitor : public osg::NodeVisitor
{
public:
   using osg::NodeVisitor::apply;

   DtTerrainIsPagingVisitor();
   virtual ~DtTerrainIsPagingVisitor() override;

   virtual void apply(osg::PagedLOD& node) override;

   virtual const bool& encounteredPagedLod() const;

protected:

   bool myEncounteredPagedLod;
};


class DT_DLL_vantageTerrainImplementation DtTerrainIsThreeDTileVisitor : public osg::NodeVisitor
{
public:
   using osg::NodeVisitor::apply;

   DtTerrainIsThreeDTileVisitor();
   virtual ~DtTerrainIsThreeDTileVisitor() override;

   virtual void apply(osg::Group& node) override;

   virtual const bool& encounteredThreeDTile() const;

protected:

   bool myEncounteredThreeDTile;
};