[osg-users] More than one NodeCallback on the same node

[Vincent Bourdier]

Hi all,

I'm trying to add more than one nodeCallback on a single node. It would be
very useful for my application.

First way :

In the archive, I founded this :
http://lists.openscenegraph.org/htdig.cgi/osg-users-openscenegraph.org/2007-October/003905.html
I didn't saw it in OSG sources, so I suppose it hasn't been implemented ?

Other way to do it :

In the explanation, I found the following code :

if (node->getUpdateCallback())
> node->getUpdateCallback()->addNestedCallback(callback);
> else
> node->setUpdateCallback(callback);
>

What is the difference between a "nested" callback and a normal nodeCallback
?
How many nested callback is it possible to add ?

Thanks a lot,

Regards,
   Vincent.
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