include/vantageTerrainImplementation/pageInVisitor.h

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/*******************************************************************************
** Copyright (c) 2010 MAK Technologies, Inc.
** All rights reserved.
*******************************************************************************/



#pragma once

#include <vantageTerrainImplementation/vantageTerrainImplementationDefines.h>

#include <terrainInterface/terrainPagingGeometry.h>

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

class btIDebugDraw;

class DT_DLL_vantageTerrainImplementation DtMaintainMatrixVisitor : public osg::NodeVisitor
{
public:
   DtMaintainMatrixVisitor();
   virtual ~DtMaintainMatrixVisitor() {};
   virtual void apply(osg::PositionAttitudeTransform& node);
   virtual void apply(osg::MatrixTransform& node);

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

class DT_DLL_vantageTerrainImplementation DtPageInVisitor : public DtMaintainMatrixVisitor
{
public:
   typedef std::list<std::pair<osg::Node*, int> > DtNodeChildList;

   DtPageInVisitor();
   virtual void apply(osg::Group& node);
   virtual void apply(osg::Geode& node);
   virtual void apply(osg::LOD& node);
   virtual void apply(osg::PagedLOD& node);
   virtual void apply(osg::CoordinateSystemNode& node);

   virtual unsigned int numNodesRequested() const;
   virtual const DtNodeChildList& nodesRequested() const;
   virtual bool allDataPagedIn() const;

   virtual int pagedLodCount() const;

protected:
   virtual bool requiresPageIn(osg::Node& node);

protected:
   DtNodeChildList myPagedNodesRequested;
   bool myAllDataPagedIn;
   int myPagedLodCount;
};

class DT_DLL_vantageTerrainImplementation DtGeometryPageInVisitor : public DtPageInVisitor
{
public:
   DtGeometryPageInVisitor(const DtTerrainPagingGeometryPtr geometry);

protected:
   virtual bool requiresPageIn(osg::Node& node);

   DtTerrainPagingGeometryPtr myGeometry;
};

class DT_DLL_vantageTerrainImplementation DtInspectorVisitor : public DtMaintainMatrixVisitor
{
public:

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

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

   int myIndentLevel;
protected:
};

class DT_DLL_vantageTerrainImplementation DtDrawBoundingSpheresVisitor : public DtMaintainMatrixVisitor
{
public:
   DtDrawBoundingSpheresVisitor(btIDebugDraw* debugDrawer, const DtChord& chord);
   //virtual void apply(osg::Node& node);
   virtual void apply(osg::Group& node);
   //virtual void apply(osg::Geode& geode);
   //virtual void apply(osg::LOD& node);
   //virtual void apply(osg::PagedLOD& node);
   //virtual void apply(osg::CoordinateSystemNode& node);

protected:
   btIDebugDraw* myDebugDrawer;
   DtChord myTestChord;
};


class DT_DLL_vantageTerrainImplementation DtTerrainIsPagingVisitor : public osg::NodeVisitor
{
public:
   DtTerrainIsPagingVisitor();
   virtual ~DtTerrainIsPagingVisitor();

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

   virtual const bool& encounteredPagedLod() const;

protected:

   bool myEncounteredPagedLod;
};