[osg-users] How do I move a Texture in an model of Openflight format (.flt) in the UV direction?

[Trajce Nikolov NICK]

You may need to call _coord->getBufferObject()->dirty() and do it outside
of the for loop

On Wed, Sep 18, 2019, 02:34 Dae Woo Ryu <osgforum at tevs.eu> wrote:

> hi Laurens.
> Thank you for the your reply.
>
> I've tried adding dirty() and it still doesn't work.
>
> Code:
>
> virtual void operator()(osg::Node*, osg::NodeVisitor* nv)
> {
>         if (nv->getFrameStamp())
>         {
>                 _coord =
> dynamic_cast<osg::Vec2Array*>(_geom->getTexCoordArray(0));
>
>                 if (_coord)
>                 {
>                         for (unsigned int u = 0; u < _coord->size(); u++)
>                         {
>                                 _coord->at(u).x() += 0.01f;
>                                 _coord->at(u).y() += 0.01f;
>                                 _coord->dirty();
>                                 _geom->dirtyDisplayList();
>                         }
>                 }
>         }
> }
>
>
>
> What should I do more?
>
>
> Voerman, L. wrote:
> > Hi Dae,add _coord->dirty()
> > after modification.
> > Laurens.
> >
> >
> >
> >
> > On Tue, Sep 17, 2019 at 3:16 AM Dae Woo Ryu < ()> wrote:
> >
> >
> > > Hi,
> > >
> > > As shown in the code below,
> > > I get the geometry information from the model of Openflight(.flt)
> format and move the coordinates of the vertices.
> > > But the texture doesn't move.
> > > How can I move a texture?
> > >
> > > **main**
> > >
> > >
> > > Code:
> > >
> > > ...
> > > osg::ref_ptr<osg::Node> model =
> osgDB::readNodeFile("test/env_cloud.flt");
> > >
> > > coneUpdateVisitor coneV;
> > > model->accept(coneV);
> > >
> > > scene->addChild(model);
> > > ...
> > >
> > >
> > >
> > >
> > > **visitor**
> > >
> > > Code:
> > >
> > >
> > > class coneUpdateVisitor : public osg::NodeVisitor
> > > {
> > > ...
> > >
> > > void apply(osg::Geode& geode)
> > > {
> > >         for (unsigned int i = 0; i<geode.getNumDrawables(); ++i)
> > >         {
> > >         scene->setUpdateCallback(new
> coneUpdateCallback(geode.getDrawable(i)->asGeometry()));
> > >         }
> > > }
> > > }
> > >
> > >
> > >
> > >
> > > **callback**
> > >
> > >
> > > Code:
> > >
> > > class coneUpdateCallback : public osg::NodeCallback
> > > {
> > > ...
> > > _geom->setUseDisplayList(false);
> > > ...
> > >
> > > virtual void operator()(osg::Node*, osg::NodeVisitor* nv)
> > > {
> > >         if (nv->getFrameStamp())
> > >         {
> > >                 _coord =
> dynamic_cast<osg::Vec2Array*>(_geom->getTexCoordArray(0));
> > >
> > >                 for (unsigned int u = 0; u < _coord->size(); u++)
> > >                 {
> > >                         _coord->at(u).x() += 0.01f;
> > >                 }
> > >
> > >         }
> > > }
> > > }
> > >
> > >
> > >
> > >
> > >
> > >
> > > Thank you!
> > >
> > > Cheers,
> > > Dae
> > >
> > > ------------------
> > > Read this topic online here:
> > > http://forum.openscenegraph.org/viewtopic.php?p=76684#76684 (
> http://forum.openscenegraph.org/viewtopic.php?p=76684#76684)
> > >
> > >
> > >
> > >
> > >
> > > _______________________________________________
> > > 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=76688#76688
>
>
>
>
>
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