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Refactored Callback system in osg::Node, osg::Drawable, osg::StateSet and osg::StateAttribute to use a new osg::Callback base class.

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git-svn-id: http://svn.openscenegraph.org/osg/OpenSceneGraph/trunk@14244 16af8721-9629-0410-8352-f15c8da7e697
This commit is contained in:
Robert Osfield
2014-06-05 16:26:13 +00:00
parent 35d6cb812f
commit 977ec20751
64 changed files with 590 additions and 471 deletions
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81
include/osg/NodeCallback
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@@ -14,86 +14,7 @@
#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
#include <osg/Callback>
#endif