+ _pannable->pan_azimuth_control->set_value (0.5, Controllable::NoGroup);
+ _pannable->pan_width_control->set_value (1.0, Controllable::NoGroup);
+ }
+
+ double const w = width();
+ double const wrange = min (position(), (1 - position())) * 2;
+ if (fabs(w) > wrange) {
+ set_width(w > 0 ? wrange : -wrange);
+ }
+
+