Hi Robert,
you're right, in this file I've deleted many things and I've deleted the
traverse() method call also...You're right...but I've just tried to execute
the application with the same code (adding the traverse method) and it
doesn't work...the code is this:
#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");
traverse(plod);
}
};
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;
}
the problem isn't the traverse() method...
From: "Robert Osfield" <[EMAIL PROTECTED]>
Reply-To: osg users <[email protected]>
To: "osg users" <[email protected]>
Subject: Re: [osg-users] PagedLOD...problem with setFileName() method
Date: Fri, 6 Oct 2006 18:57:05 +0100
Hi Leo,
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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