Hi, i am trying to get eyePosition and direction, more precisely, the direction of a ray for the purpose of ray tracing.
this is what i am doing: Code: const osg::Vec3d collisionPoint = intersection.getWorldIntersectPoint(); ... osg::Vec3d eyeDirection = collisionPoint - _tracer->getEye(); eyeDirection.normalize(); where the _tracer->getEye() method returns the position of the eye (computed once for a frame): Code: if (!_eye_set) { osg::Vec3d center, up; getCamera()->getViewMatrixAsLookAt(_eye, center, up); _eye_set = true; } i am not sure whether this is the correct way to get the eye position/direction. i was thinking there has to be a way to get the direction from an intersection itself, but i am not confident using the start/end points (transforming them into appropriate coordinates) considering i create the rays (line segment intersectors) in WINDOW and also MODEL coordinate frames. can anyone tell me whether my method is correct or i should rather try getting the start/end points from the intersector, transforming them and this way getting the ray (==eye) direction ? Thank you! Cheers, Andrey[/code] ------------------ Read this topic online here: http://forum.openscenegraph.org/viewtopic.php?p=46123#46123 _______________________________________________ osg-users mailing list osg-users@lists.openscenegraph.org http://lists.openscenegraph.org/listinfo.cgi/osg-users-openscenegraph.org