Hi Art,
A long way back, 7 years ago, perhaps more, when I wrote
NodeVisitor I did consider adding detecting of cycles but considered
the code too costly to apply on every traverse or accept invocation.
Cyclic scene graphs are very much a special case that very few users
will ever use so
Art Tevs wrote:
Hi folks,
as far as I can see for now osg doesn't check if the
given scene graph contains cycles. If one do this,
then there is a seg fault, if my test were correct ;-)
However imagine I have a situation, where I need to
have a cycle in the graph. For example:
...
Any
Hi Jason,
I know that scene graphs are per definition DAG. I
know that I am using it in a wrong way with that
setup.
However let us think on something like extended scene
graphs where cycles are also more or less possible ;-)
Does anybody already made some thoughts on that?
--- Jason Daly
Art Tevs wrote:
However let us think on something like extended scene
graphs where cycles are also more or less possible ;-)
Does anybody already made some thoughts on that?
Hi, Art,
I'm sure it's been pondered in the past, I'm just not sure it's relevant
to OSG's purposes. Maybe
Hi Art,
I've never tried it myself, but the OSG should be able to support
cyclic graphs, just not out of the box. The way I'd do it is have a
custom Update/Event/CullCallback that is attached to a node in the
cycle, these callbacks count the number of times through in each
traversal, once an max
Hi Art,
However let us think on something like extended scene
graphs where cycles are also more or less possible ;-)
Does anybody already made some thoughts on that?
Maybe you've got a cool idea that requires that kind of structure [...]
I concur with Jason, and I think the question
Fractals ?
Wojtek ;-)
-Original Message-
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] Behalf Of
Jean-Sebastien Guay
Sent: Thursday, April 17, 2008 8:57 PM
To: OpenSceneGraph Users
Subject: Re: [osg-users] Cyclic graphs?!
Hi Art,
However let us think on something like extended
Hi folks,
Hmm, yeah it could be. However I haven't thought a lot
of thread safety in a cyclic scene graph.
Of course, for my purpose, I maybe would be able to
redesign the problem and break the cycle in it or more
or less leave with it by changing hte ::traverse()
methods accordingly. However, I
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