Hi Robert, I'm computing the NDC coordinates of Particles in a derived ParticleSystem. I'm doing it in the drawImplementation which "feels" wrong, but can live with it. I was interested in moving this computation to the update phase, but I'm starting to think this isn't the best plan. This was just a quick investigation to figure out if it could be moved.
Thanks Brad -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Robert Osfield Sent: Monday, February 14, 2011 11:34 AM To: OpenSceneGraph Users Subject: Re: [osg-users] Drawable::UpdateCallback, Modelview and projection matrices Hi Brad On Mon, Feb 14, 2011 at 7:10 PM, Brad Colbert <[email protected]> wrote: > Is there a way to get the current ModelView and Projection matrices in the > update() call? There isn't necessarily any one modelview and projection matrix as the OSG can have multiple cameras rendering the scene at one time. Is the viewer's master Camera that you want a handle to? If so just get the viewer's camera and get it's projection and view matrixes and then get the model matrices using the osg::computeLocalToWorldMatrix(NodePath) wher the NodePath is supplied by the NodeVisitor::getNodePath(). Robert, _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org _______________________________________________ osg-users mailing list [email protected] http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
