261f4a3b1c
email comments from Andew Sampson, "I've contacted Terrex, and obtained the 2.2 version of their trpage library. The library included a fork of OSG 0.9.8's txp plugin, modified to load 2.1+ txp DBs. I've done the work of incorporating the changes made to OSG's txp plugin since 0.9.8 into Terrex's fork. The forked version is now up-to-date with the changes made to OSG 0.9.9 and 1.0. Terrex made a lot of changes (especially differences in whitespace), so the diff between the forked version and OSG 1.0's txp plugin is yucky. I did my best, but keep in mind that this is the result of a 4-way merge (kinda... terrex-0.9.8, stock-0.9.8, stock-0.9.9, stock-1.0). I really want to see this forked version merged back into the main OSG branch. The new features offered by this version of the plugin (2.1+ support, variable LOD support, bug fixes) are worth the trouble." -- Don Tidrow then took this code and added his work. -- Robert Osfield then fixed all the warnings that abound in the trpage code base.
144 lines
3.4 KiB
C++
144 lines
3.4 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2004 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef __TILEMAPPER_H_
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#define __TILEMAPPER_H_
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#include "trpage_sys.h"
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#include "trpage_read.h"
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#include <osg/CullStack>
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#include <osg/NodeVisitor>
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#include <set>
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namespace txp
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{
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struct TileIdentifier : public osg::Referenced
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{
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TileIdentifier():
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x(-1),
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y(-1),
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lod(-1)
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{}
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TileIdentifier(int ax, int ay, int alod):
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x(ax),
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y(ay),
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lod(alod)
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{}
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TileIdentifier(const TileIdentifier& rhs):
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osg::Referenced(),
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x(rhs.x),
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y(rhs.y),
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lod(rhs.lod)
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{}
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TileIdentifier& operator = (const TileIdentifier& rhs)
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{
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if (this==&rhs) return *this;
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x = rhs.x;
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y = rhs.y;
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lod = rhs.lod;
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return *this;
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}
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void set(int ax, int ay, int alod)
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{
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x = ax;
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y = ay;
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lod = alod;
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}
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bool operator < (const TileIdentifier& rhs) const
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{
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if (lod<rhs.lod)
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return true;
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if (lod>rhs.lod)
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return false;
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if (x<rhs.x)
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return true;
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if (x>rhs.x)
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return false;
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if (y<rhs.y)
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return true;
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if (y>rhs.y)
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return false;
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return false;
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}
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int x,y,lod;
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};
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class TileMapper : public osg::NodeVisitor, public osg::CullStack
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{
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public:
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typedef osg::Matrix::value_type value_type;
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TileMapper():
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osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ACTIVE_CHILDREN) {}
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virtual osg::Vec3 getEyePoint() const
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{
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return getEyeLocal();
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}
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virtual float getDistanceToEyePoint(const osg::Vec3& pos, bool withLODScale) const;
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virtual float getDistanceFromEyePoint(const osg::Vec3& pos, bool withLODScale) const;
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virtual void apply(osg::Node& node);
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virtual void apply(osg::Group& node);
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virtual void apply(osg::Geode& node);
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virtual void apply(osg::PagedLOD& node);
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void insertTile(const TileIdentifier& tid);
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bool canParentBeTraversed(const TileIdentifier& tid) const;
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void checkValidityOfAllVisibleTiles();
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bool containsBlackListedNodes() const
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{
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return !_blackListedNodeSet.empty();
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}
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inline bool isNodeBlackListed(const osg::Node* node) const
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{
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return _blackListedNodeSet.count(node)!=0;
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}
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bool isTileNeighbourALowerLODLevel(const TileIdentifier& tid, int dx, int dy) const;
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protected:
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typedef std::vector< std::pair<TileIdentifier,osg::Node*> > TileStack;
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typedef std::map< TileIdentifier, TileStack > TileMap;
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typedef std::set< const osg::Node* > BlacklistedNodeSet;
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TileStack _tileStack;
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TileMap _tileMap;
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bool _containsGeode;
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BlacklistedNodeSet _blackListedNodeSet;
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};
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} // namespace
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#endif // __TILEMAPPER_H_
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