X-Git-Url: http://git.hungrycats.org/cgi-bin/gitweb.cgi?p=xscreensaver;a=blobdiff_plain;f=hacks%2Fglx%2Fgltrackball.h;h=33de09d516f8042ea58840a21b9ae3a03587f91b;hp=a56888409100dfc69f4c448e0fe0e44bbe0273ac;hb=c1b9b55ad8d59dc05ef55e316aebf5863e7dfa56;hpb=de460e831dc8578acfa8b72251ab9346c99c1f96

diff --git a/hacks/glx/gltrackball.h b/hacks/glx/gltrackball.h
index a5688840..33de09d5 100644
--- a/hacks/glx/gltrackball.h
+++ b/hacks/glx/gltrackball.h
@@ -51,5 +51,9 @@ void gltrackball_mousewheel (trackball_state *ts,
  */
 extern void gltrackball_get_quaternion (trackball_state *ts, float q[4]);
 
+/* Reset the trackball to the default unrotated state.
+ */
+extern void gltrackball_reset (trackball_state *ts);
+
 #endif /* __GLTRACKBALL_H__ */