http://www.jwz.org/xscreensaver/xscreensaver-5.07.tar.gz

[xscreensaver] / hacks / glx / gltrackball.h

diff --git a/hacks/glx/gltrackball.h b/hacks/glx/gltrackball.h
index a56888409100dfc69f4c448e0fe0e44bbe0273ac..33de09d516f8042ea58840a21b9ae3a03587f91b 100644 (file)
--- 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__ */