Hi JSG,
Nick
http://www.linkedin.com/in/tnikolov
Sent from Gümüşsuyu, İstanbul, Turkey
On Mon, Dec 7, 2009 at 6:02 AM, Jean-Sébastien Guay
jean-sebastien.g...@cm-labs.com wrote:
Hello Trajce,
I have osg file and I am doing traversal to get nodes with given
name. In the osg file, I see the Geode with the name, however the
visitor never gets there
[...]
virtual void apply(osg::Group node)
{
for (unsigned int i=0; inode.getNumChildren(); ++i)
{
traverse(*node.getChild(i));
}
}
Well first of all, you don't need this, the osg::NodeVisitor base class
version of apply(osg::Group) will traverse all children of a group already.
yea ... I was doing couple of testings so I put the other sample
virtual void apply(osg::Geode node)
{
osg::Node::DescriptionList dl = node.getDescriptions();
osg::Node::DescriptionList::iterator itr = dl.begin();
for (; itr != dl.end(); ++itr)
{
if (itr-find_first_of(#MIRROR) != std::string::npos)
{
std::cout Never gets here ! std::endl;
}
}
traverse(node);
}
Here, you're not checking the node's name, you're checking its description
list... In addition, find_first_of doesn't do what you think it does. It
finds the first occurence of *any* of the characters in the string you pass
(so the first occurence of either '#' 'M' 'I'...). Try this instead:
virtual void apply(osg::Geode node)
{
if (node.getName().find(#MIRROR) != std::string::npos)
{
std::cout Should get here if one of the Geodes' name has
#MIRROR in it std::endl;
}
traverse(node);
}
std::string::find returns the first occurrence of the argument within the
string object you call it on, or std::string::npos if not found.
good hint ... Thanks !
Also note that you're only checking Geodes here... If you want to find any
node that has #MIRROR in its name, you might want to override the
apply(osg::Node node), which will be called for all types of nodes (as long
as you don't override other versions of apply() ).
And a little tip I imagine you know, but just in case: you can write your
scene graph to a .osg file (either with osgDB::writeNodeFile() in code or
with osgconv on the command line) and then inspect it with a text editor to
make sure one of the nodes really has #MIRROR in its name.
That is what I am doing to check the scenegraph.
Its been quite a while since I used OSG and just need time to get a hand of
it again. Forgot many things ... But I learn fast ;-)
Thanks a gain for the support
Hope this helps,
J-S
--
__
Jean-Sebastien Guayjean-sebastien.g...@cm-labs.com
http://www.cm-labs.com/
http://whitestar02.webhop.org/
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