Hi Joao, Subgraphs under a ABSOLUTE_RF Transform are effectively in their own local world coordinate frame, they don't related to other word coordinate frames. You can relate to them view the eye coordinate frame if you want though, or shift them from one world coordinate frame into eye coordinate and then back out to another world coordinate frame so see the relative position of it.
However, doing these transforms is view dependent, as every time the camera moves the relative positions all shift, this means you need to keep track of the view matrix as part of the shifting the coordinate frame from one world coordinate frame to another. Doing this may make sense in very specific cases, but it might be that you are simply trying to do things in an awkward way and there is a better way of doing things without the messy hack of mixing different world coordinate frames. Robert. On 27 April 2015 at 11:27, João <[email protected]> wrote: > I'm displaying some text in a 3D scene using a transform with an absolute > reference frame. I now need to find out what the world coordinates of the > text are, is that any way to easily obtain that information? > > _______________________________________________ > 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
