[osg-users] [Question about StateSet.cpp] truncated attribute override value?

[Voerman, L.]

Sorry, you are right, i did not read your question properly.
Modes could have a value OFF, attributes do not, they are always ON
Laurens.

On Thu, Sep 10, 2015 at 1:35 PM, Julien Valentin <julienvalentin51 at gmail.com
> wrote:

> I think you misread the question:
> You can't know if the flags is ON/OFF as the bit seams ignored and then
> not stored...
> Using the posted code, it never returns 1.
>
>
>
>
> Voerman, L. wrote:
> > Hi Julien,it's OFF, the enum for StateAttribute::OFF is 0x0, so anything
> not ON has value OFF.
> > Regards, Laurens.
> >
> >
> >
> >
> > On Wed, Sep 9, 2015 at 7:45 PM, Julien Valentin < ()> wrote:
> >
> > > Hi,
> > > Iwould like to introspect StateSet in order to know which override
> value is activated for a particular stateset.
> > > I parse AttributeList for this
> > >
> > > Code:
> > > for( osg::StateSet::AttributeList::const_iterator
> it=ss->getAttributeList().begin();it!=ss->getAttributeList().end() ; it++)
> > > {
> > >             if((*it).second.first ==stateattribute)
> > >             {
> > >                 if( (*it).second.second & osg::StateAttribute::ON)
> > >                 return(1);
> > >                 else return(0);
> > > }
> > >
> > >
> > >
> > > but according to StateSet.cpp l.1662
> > >
> > > Code:
> > > attributeList[attribute->getTypeMemberPair()] =
> RefAttributePair(attribute,value&(StateAttribute::OVERRIDE|StateAttribute::PROTECTED));
> > >
> > >
> > >
> > > the ON OFF bit is removed from the given user value. So I can't
> determine if an osg::Attribute is ON or OFF but only if it's OVERRIDE or
> PROTECTED
> > > I would like to know if there's a known reason behind this logic & and
> further if you know a mean to retrieve the ON/OFF bit.
> > >
> > > Thank you!
> > >
> > > Cheers,
> > > Julien
> > >
> > > ------------------
> > > Read this topic online here:
> > > http://forum.openscenegraph.org/viewtopic.php?p=65081#65081 (
> http://forum.openscenegraph.org/viewtopic.php?p=65081#65081)
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > osg-users mailing list
> > >  ()
> > >
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> (http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
> )
> > >
> >
> >
> >  ------------------
> > Post generated by Mail2Forum
>
>
> ------------------
> Read this topic online here:
> http://forum.openscenegraph.org/viewtopic.php?p=65095#65095
>
>
>
>
>
> _______________________________________________
> osg-users mailing list
> osg-users at lists.openscenegraph.org
> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/attachments/20150910/d93749f2/attachment-0003.htm>