Hi, I discovered recently that it is a bounding box that is first calculated for drawables. Then the bounding sphere of nodes is the bounding sphere of the bounding boxes.
-Fred ----- "paul graham" a écrit : > Hi, I've modified the osg billboard example and am examining the pixel > size computed from one of the billboard's bounding spheres. > > I'm sure I'm missing something fundamental in my understanding of > what's going on, but I expected the pixel size computed by pixelSize() > to correspond to the length of the billboard's diagonal as measured on > the screen? > > Can anyone explain to me the relationship between the pixel size > returned from the pixelSize() function and the on-screen pixel size > (ie. of the billboard) in this instance? > > Many thanks > > Paul _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org
