#include <simgear/constants.h>
#include <simgear/debug/logstream.hxx>
-#include <simgear/math/polar3d.hxx>
#include <simgear/props/props.hxx>
#include <simgear/timing/sg_time.hxx>
#include <Main/globals.hxx>
#include <Main/fg_props.hxx>
#include <Main/viewmgr.hxx>
+#include <Main/viewer.hxx>
#include <Scenery/scenery.hxx>
-#include <Time/fg_timer.hxx>
#include <GUI/gui.h>
#include "cockpit.hxx"