Is it that the visitor isn't traversing all the scene? If so then its because you haven't included a traverse(..) calling the the apply() method. Traversal is your responsibility in either custom NodeVisitor or callbacks. Have a look at the source code to other NodeVisitors and you'll spot calls to NodeVisitr::traverse(..) or the nodes traverse method.
Robert.
On 10/6/06, Leo Orlandini <[EMAIL PROTECTED]> wrote:
I try to explain better my problem...I've written a simple file defining
only one visitor, which change the filename associated with the first child
of every pagedLOD in the scenegraph... I test it on a model that contain
some pagedlod (exampleModel.osg) but the visitor has no effect.... can
someone explain me the reason of this fact ?
the file I've written is:
#include <osg/Notify>
#include <osgDB/ReadFile>
#include <osgDB/WriteFile>
class ProvaVisitor : public osg::NodeVisitor
{
public:
ProvaVisitor():
osg::NodeVisitor(osg::NodeVisitor::TRAVERSE_ALL_CHILDREN)
{
}
virtual void apply(osg::PagedLOD& plod)
{
plod.setFileName(0,"a");
}
};
int main( int argc, char **argv )
{
osg::notify(osg::NOTICE)<<"Charging the model...";
osg::ref_ptr<osg::Node> root = osgDB::readNodeFile("exampleModel.osg");
osg::notify(osg::NOTICE)<<"Done"<< std::endl;
ProvaVisitor v;
root->accept(v);
return 0;
}
thanks
Leo
>From: "Leo Orlandini" <[EMAIL PROTECTED]>
>Reply-To: osg users < [email protected]>
>To: [email protected]
>Subject: [osg-users] PagedLOD...problem with setFileName() method
>Date: Thu, 05 Oct 2006 17:41:16 +0000
>
>Hello everybody,
>
>I need to define a visitor which, in certain case, have to change the file
>referred to some children of pagedLOD nodes in the scenegraph...so in my
>visitor I define an apply() method for pagedLOD in which body I made a call
>of setFileName() method...
>
> virtual void apply(osg::PagedLOD& plod)
> {
> ...................
> plod.setFileName(i,sameFile);
> ...................
> }
>
>where "i" is an integer and "sameFile" is a std::string...
>
>after the visitor's traverse there is no change in the name of the file
>associated with the child in question...what I wrong ?
>
>Thanks in advance
>Leo
>
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