Are you sure you understand the basic concept that ref_ptr together with
osg::Referenced implements?
You might want to read
http://andesengineering.com/OSG_ProducerArticles/RefPointers/RefPointers.html...
The return value is the instance being pointed to by the ref_ptr
instance. When you call release() it decrements the instances it's
pointing at and returns it.
Method unref_nodelete() is a method of osg::Referenced (of which
osg::Node is a subclass) and, while it decrements the reference count of
the instance it will not delete it when the reference count reaches zero.
Paul
Vincent Bourdier wrote:
Hi
I'm not sure to understand what release() do...
T* release() { T* tmp=_ptr; if (_ptr) _ptr->unref_nodelete();
_ptr=0; return tmp; }
what does unref_nodelete() do ?
what does it return really ?
Thanks
Vincent.
2008/5/23 Paul Melis <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>:
Vincent Bourdier wrote:
Hi Robert
I've a ref_ptr to put to NULL, but I can't do a simple
my_refptr = NULL;
I need to set it in a function.
In argument of my function, I get a ref_ptr, and in the
function, I put this ref_ptr to NULL;
I do not return anything.
Perhaps ref_ptr::release()?
Paul
but at the end (going out of the function), my original
ref_ptr hasn't been modified...
I don't know if it is more understandable, but it's not easy
to explain...
Thanks for help.
Vincent.
2008/5/23 Robert Osfield <[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
<mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>>:
Hi Vincent,
I don't know if anyone else can make sense of what you are
trying to
do, based on your email, but I'm just lost. I kinda doubt
the problem
is really about ref_ptr<>, but something related to the
overall code
that you have written, but since I can't really spot what
you intend
or what might be going on I certainly can't help.
Robert.
On Fri, May 23, 2008 at 9:02 AM, Vincent Bourdier
<[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>
<mailto:[EMAIL PROTECTED]
<mailto:[EMAIL PROTECTED]>>>
wrote:
> Hi all,
>
> I'm making some function to modify graph after some
operation,
and so I need
> to call some simple actions in functions.
>
> The problem is about ref_ptr :
>
> I need to do this :
>
> osg::ref_ptr<osg::Group> mygroup;
> [..]
> mygroup = NULL;
> [...]
>
> To do that in a function, I use someting like :
> addonstack(mygroup, NULL); //prototype is :
> addonstack(osg::ref_ptr<osg::Group> caller, osg::Node* arg1);
>
> which did this :
> osg::ref_ptr<osg::Node> nd =
dynamic_cast<osg::Node*>(caller.get());
> if(nd.get()){
> nd =arg1;
>
> But, the problem is that it doesn't change anything... I
need,
without
> making some modifications in the addonstack prototype, a
way to
put the
> ref_ptr to NULL .
>
> Any idea ?
> Thanks.
>
> Regards,
> Vincent.
>
> _______________________________________________
> osg-users mailing list
> [email protected]
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<mailto:[email protected]
<mailto:[email protected]>>
>
http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
>
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