/usr/include/osg/ObserverNodePath is in libopenscenegraph-dev 3.0.1-4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 | /* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
*
* This library is open source and may be redistributed and/or modified under
* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
* (at your option) any later version. The full license is in LICENSE file
* included with this distribution, and on the openscenegraph.org website.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* OpenSceneGraph Public License for more details.
*/
#ifndef OSG_OBSERVERNODEPATH
#define OSG_OBSERVERNODEPATH 1
#include <osg/Node>
#include <osg/observer_ptr>
#include <vector>
namespace osg {
typedef std::vector< osg::ref_ptr<osg::Node> > RefNodePath;
/** ObserverNodePath is an observer class for tracking changes to a NodePath,
* that automatically invalidates it when nodes are deleted.*/
class OSG_EXPORT ObserverNodePath
{
public:
ObserverNodePath();
ObserverNodePath(const ObserverNodePath& rhs);
ObserverNodePath(const osg::NodePath& nodePath);
~ObserverNodePath();
ObserverNodePath& operator = (const ObserverNodePath& rhs);
/** get the NodePath from the first parental chain back to root, plus the specified node.*/
void setNodePathTo(osg::Node* node);
void setNodePath(const osg::RefNodePath& nodePath);
void setNodePath(const osg::NodePath& nodePath);
void clearNodePath();
/** Get a thread safe RefNodePath, return true if NodePath is valid.*/
bool getRefNodePath(RefNodePath& refNodePath) const;
/** Get a lightweight NodePath that isn't thread safe but
* may be safely used in single threaded applications, or when
* its known that the NodePath won't be invalidated during usage
* of the NodePath. return true if NodePath is valid.*/
bool getNodePath(NodePath& nodePath) const;
bool empty() const
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(_mutex);
return _nodePath.empty();
}
protected:
void _setNodePath(const osg::NodePath& nodePath);
void _clearNodePath();
typedef std::vector< osg::observer_ptr<osg::Node> > ObsNodePath;
mutable OpenThreads::Mutex _mutex;
ObsNodePath _nodePath;
};
}
#endif
|