/usr/include/osg/NodeCallback is in libopenscenegraph-dev 3.2.1-6.
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 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 | /* -*-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_NODECALLBACK
#define OSG_NODECALLBACK 1
#include <osg/Object>
#include <osg/ref_ptr>
namespace osg {
class Node;
class NodeVisitor;
class OSG_EXPORT NodeCallback : public virtual Object {
public :
NodeCallback(){}
NodeCallback(const NodeCallback& nc,const CopyOp&):
_nestedCallback(nc._nestedCallback) {}
META_Object(osg,NodeCallback);
/** Callback method called by the NodeVisitor when visiting a node.*/
virtual void operator()(Node* node, NodeVisitor* nv)
{
// note, callback is responsible for scenegraph traversal so
// they must call traverse(node,nv) to ensure that the
// scene graph subtree (and associated callbacks) are traversed.
traverse(node,nv);
}
/** Call any nested callbacks and then traverse the scene graph. */
void traverse(Node* node,NodeVisitor* nv);
void setNestedCallback(NodeCallback* nc) { _nestedCallback = nc; }
NodeCallback* getNestedCallback() { return _nestedCallback.get(); }
const NodeCallback* getNestedCallback() const { return _nestedCallback.get(); }
inline void addNestedCallback(NodeCallback* nc)
{
if (nc)
{
if (_nestedCallback.valid())
{
_nestedCallback->addNestedCallback(nc);
}
else
{
_nestedCallback = nc;
}
}
}
inline void removeNestedCallback(NodeCallback* nc)
{
if (nc)
{
if (_nestedCallback==nc)
{
ref_ptr<NodeCallback> new_nested_callback = _nestedCallback->getNestedCallback();
_nestedCallback->setNestedCallback(0);
_nestedCallback = new_nested_callback;
}
else if (_nestedCallback.valid())
{
_nestedCallback->removeNestedCallback(nc);
}
}
}
public:
ref_ptr<NodeCallback> _nestedCallback;
protected:
virtual ~NodeCallback() {}
};
} // namespace
#endif
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