/usr/include/osgEarthDrivers/engine_mp/TileGroup is in libosgearth-dev 2.7.0+dfsg-2+b3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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/* osgEarth - Dynamic map generation toolkit for OpenSceneGraph
* Copyright 2015 Pelican Mapping
* http://osgearth.org
*
* osgEarth is free software; you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
* IN THE SOFTWARE.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>
*/
#ifndef OSGEARTH_DRIVERS_MP_TERRAIN_ENGINE_TILE_GROUP
#define OSGEARTH_DRIVERS_MP_TERRAIN_ENGINE_TILE_GROUP 1
#include "Common"
#include "TileNode"
#include "TileNodeRegistry"
#include <osg/Group>
#include <osgEarth/ThreadingUtils>
namespace osgEarth { namespace Drivers { namespace MPTerrainEngine
{
using namespace osgEarth;
/**
* TileGroup is a group node that contians four sibling TileNodes
* in the quadtree structure. It has the ability to update itself
* by checking the map revision and scheduling an incremental
* update of its TileNode set.
*/
class TileGroup : public osg::Group
{
public:
TileGroup(const TileKey& key,
const UID& engineUID,
TileNodeRegistry* live,
TileNodeRegistry* dead);
const UID& getEngineUID() const { return _engineUID; }
const TileKey& getKey() const { return _key; }
public: // osg::Node
virtual void traverse(osg::NodeVisitor& nv);
public: // internal
void applyUpdate(osg::Node* node);
protected:
virtual ~TileGroup() { }
TileNode* getTileNode(unsigned q);
osg::ref_ptr<osg::Node> _updateAgent;
mutable Threading::Mutex _updateMutex;
UID _engineUID;
TileKey _key;
osg::ref_ptr<TileNodeRegistry> _live;
osg::ref_ptr<TileNodeRegistry> _dead;
};
} } } // namespace osgEarth::Drivers::MPTerrainEngine
#endif // OSGEARTH_DRIVERS_MP_TERRAIN_ENGINE_TILE_NODE
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