(Posting this for about the 1000th time...) Zooming merely changes the field of view without changing the view position. Think of a photographer changing lenses on a camera without changing his physical location. You change the projection matrix to change the field of view, not the modelview matrix.
If you want to move the view position closer to a location, or further away from a location, then you would change the modelview matrix (Camera view) for that. See the OpenGL red book. Paul Martz Skew Matrix Software LLC http://www.skew-matrix.com +1 303 859 9466 -----Original Message----- Subject: [osg-users] Performing zooming and other navigations on geocentricvirtual earch? Hi, I have created geocentric(spherical) virtual earth and wanted to do navigate around the earth using keyboard including zooming-in and out. As I m new to OSG I want to understand dat could it be done by setting viewmatrixAsLookAt of views' cameramanipulator? Plz get me some ideas how it can be done??? ... Thank you. ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=9054#9054 _______________________________________________ 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
