[osg-users] Perform actions when a child node is added

Bruno Oliveira bruno.manata.oliveira at gmail.com
Mon Jun 26 05:18:33 PDT 2017


a dangling pointer is a probable cause of my problems. Thanks for the hint,
I'll look into it.

I thought it could be related to me rewriting the node's InitialBound.


2017-06-26 10:15 GMT+01:00 Robert Osfield <robert.osfield at gmail.com>:

> Hi Bruno,
> On 23 June 2017 at 23:45, Bruno Oliveira
> <bruno.manata.oliveira at gmail.com> wrote:
> > I actually tried it already, in my nodes derived doth from osg::Group*
> and
> > osg::PagedLOD*.
> > However, overloading the PagedLOD's functions made my scene crash the app
> > during the cull traversal (my overload was rewriting the node's center,
> > radius and InitialBound...)
> If you've got a crash it'll likely be because what you are doing
> somewhere is buggy, perhaps an assumption somewhere.  Overriding
> addChild/insertChild() won't cause a crash if done properly.
> In the case of paged databases nodes are added and removed, the later
> can cause problems such as if your code just uses C pointers to these
> nodes assuming that they'll always be around.
> I can't say what might have caused the crash for you as I know nothing
> about the code you've written or what the crash is, or exactly what
> circumstances it happens in.
> You'll have a debugger, your have your code, your data, you're the
> person best placed to debug it.
> Robert.
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