I just read some archives and I saw that the update callback is a good place to modify the node children, but not its parent. But , the osg Handler inherits from nodeCallback ... so it is safe to modify children in a handle() isn't it ?
Last, when can I modify a node's parent, or the node itsef (I mean adding/removing children by 'modify') ? Thanks, any link or precision will be appreciated. Regards, Vincent. 2009/4/22 Vincent Bourdier <vincent.bourd...@gmail.com> > Hi Robert, > > Thanks for the reply. > > So if I understand well, modifying the graph in a handler is not safe at > all... But if I modify in a callback, this will not be more safe because of > iterators as you said, no ? ... so when and how can I modify my graph safely > ? > > It looks like a beginner question, but I feel a bit lost with that > "revelation" ... > > Thanks. > > Regards, > Vincent. > > > 2009/4/22 Robert Osfield <robert.osfi...@gmail.com> > > On Wed, Apr 22, 2009 at 8:51 AM, Vincent Bourdier >> <vincent.bourd...@gmail.com> wrote: >> > So the question is : it is ok to modify geometry/graph in the Handler >> even ? >> >> It all depends upon what modifications you are making. If you are >> modify content of parents from within a callback/handler then you'll >> be invalidating iterators that are held by the function that called >> your callback, so this is very definitely something you should avoid >> doing. >> >> Beyond that there is much I can add, it's your code, there are many >> things you can do wrong and frankly is pointless any of us attempting >> guessing what these many things might be. It's you code, you have it >> front of you, you have a debugger and capability to step through the >> code in the debugger, go do it. >> >> Robert. >> _______________________________________________ >> osg-users mailing list >> osg-users@lists.openscenegraph.org >> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org >> > >
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