Hi Vincent,A Drawable (which Geometry inherits from) has an associated StateSet object the same way that Geodes (and other classes inheriting Node) do, so the same method should work for your geometry as well. See http://www.openscenegraph.org/documentation/OpenSceneGraphReferenceDocs/a01139.html for more information.
--Will Vincent Bourdier wrote:
Thanks for help. I do exactly the same things, on Nodes...but this time I am looking on a way to do this only on a geometry (So under a Geode)...If you have any suggestion.. Regards, Vincent 2008/7/11 Brian R Hill <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>>: This is what I do: osg::StateSet * stateset = node->getOrCreateStateSet(); osg::Material * mm = dynamic_cast<osg::Material*>(stateset->getAttribute (osg::StateAttribute::MATERIAL)); if (!mm) { mm = new osg::Material; } mm->setAlpha(osg::Material::FRONT, transparency); stateset->setAttributeAndModes( mm, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON); stateset->setMode(GL_BLEND, osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON ); stateset->setMode(GL_LIGHTING,osg::StateAttribute::OVERRIDE | osg::StateAttribute::ON ); stateset->setRenderingHint(osg::StateSet::TRANSPARENT_BIN); Brian [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> wrote: ----- To: "'OpenSceneGraph Users'" <osg-users@lists.openscenegraph.org <mailto:osg-users@lists.openscenegraph.org>> From: "Gordon Tomlinson" <[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>> Sent by: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> Date: 07/11/2008 09:59AM Subject: Re: [osg-users] Transparency on a drawable Vincent You post your initial question at a little over 2 hours ago.. you need to give people time to possibly respond maybe 1-2 days http://www.catb.org/~esr/faqs/smart-questions.html <http://www.catb.org/%7Eesr/faqs/smart-questions.html> also a search of the mailing list archive will throw up quite a few discussions and solutions on this very subject From: [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> [mailto:[EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]>] On Behalf Of Vincent Bourdier Sent: Friday, July 11, 2008 8:54 AM To: osg Subject: Re: [osg-users] Transparency on a drawable No one have any idea of how to set an alpha transparency level on a geometry ? It has no texture, juste one color... Thanks, Regards, Vincent. 2008/7/11 Vincent Bourdier < [EMAIL PROTECTED] <mailto:[EMAIL PROTECTED]> >: Hi All, Just a simple question on how to set a transparency effect on a drawable. My geode contains 2 drawables, and I need only one to be transparent... I've tried : double opacity = 0.1; osg::StateSet* state = mygometry->getOrCreateStateSet(); state->setMode(GL_BLEND,osg::StateAttribute::ON| osg::StateAttribute::OVERRIDE); osg::Material* mat = (osg::Material*)state->getAttribute (osg::StateAttribute::MATERIAL); if(!mat) { mat = new osg::Material; mat->setAlpha(osg::Material::FRONT_AND_BACK, opacity); state->setAttributeAndModes(mat,osg::StateAttribute::ON); } Lightning is already set to ON... But nothing appear transparent... Thanks, Regards Vincent. _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org <mailto:osg-users@lists.openscenegraph.org> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org <mailto:osg-users@lists.openscenegraph.org> http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org ------------------------------------------------------------------------ _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
-- Will Dicharry Stellar Science Ltd Co
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