Make tile_mgr->prep_ssg_nodes() use an FGLocation object.

src/Main/main.cxx

@@ -1208,9 +1208,7 @@ static void fgMainLoop( void ) {
     // ...only if location is different than the viewer (to avoid duplicating effort)
     if( acmodel_location != current_view->getFGLocation() ) {
       if( acmodel_location != 0 ) {
-        global_tile_mgr.prep_ssg_nodes(visibility_meters,
+        global_tile_mgr.prep_ssg_nodes( acmodel_location, visibility_meters );
-               acmodel_location->get_world_up(),
-               acmodel_location->get_tile_center());
         global_tile_mgr.update( acmodel_location->getLongitude_deg(),
  			    acmodel_location->getLatitude_deg(),
                             visibility_meters,
@@ -1229,9 +1227,8 @@ static void fgMainLoop( void ) {
       }
     }
 
-    global_tile_mgr.prep_ssg_nodes(visibility_meters,
+    global_tile_mgr.prep_ssg_nodes( current_view->getFGLocation(),
-       current_view->getFGLocation()->get_world_up(),
+                                    visibility_meters );
-       current_view->getFGLocation()->get_tile_center());
     // update tile manager for view...
     // IMPORTANT!!! the tilemgr update for view location _must_ be done last 
     // after the FDM's until all of Flight Gear code references the viewer's location

src/Network/atc610x.cxx

@@ -591,9 +591,11 @@ bool FGATC610x::do_analog_in() {
     // cout << "throttle = " << tmp << endl;
 
     // rudder
+    /*
     tmp = scale( rudder_center->getIntValue(), rudder_min->getIntValue(),
                  rudder_max->getIntValue(), analog_in_data[10] );
     fgSetFloat( "/controls/rudder", -tmp );
+    */
 
     // nav1 volume
     tmp = (float)analog_in_data[25] / 1024.0f;

src/Scenery/tilemgr.cxx

@@ -484,27 +484,13 @@ int FGTileMgr::updateCurrentElevAtPos(sgdVec3 abs_pos_vector, Point3D center) {
 }
 
 
-void FGTileMgr::prep_ssg_nodes(float vis) {
+void FGTileMgr::prep_ssg_nodes( FGLocation *location, float vis ) {
 
     // traverse the potentially viewable tile list and update range
     // selector and transform
 
-    // just setup and call new function...
+    Point3D center = location->get_tile_center();
-
+    float *up = location->get_world_up();
-    sgVec3 up;
-    sgCopyVec3( up, globals->get_current_view()->get_world_up() );
-
-    Point3D center;
-    center = globals->get_scenery()->get_center();
-    prep_ssg_nodes( vis, up, center );
-
-}
-
-
-void FGTileMgr::prep_ssg_nodes(float vis, sgVec3 up, Point3D center) {
-
-    // traverse the potentially viewable tile list and update range
-    // selector and transform
 
     FGTileEntry *e;
     tile_cache.reset_traversal();

src/Scenery/tilemgr.hxx

@@ -41,6 +41,8 @@
 #  include <simgear/threads/SGQueue.hxx>
 #endif // ENABLE_THREADS
 
+#include <Main/location.hxx>
+
 #include "FGTileLoader.hxx"
 #include "hitlist.hxx"
 #include "newcache.hxx"
@@ -173,15 +175,14 @@ public:
 		     const sgdVec3 p, const sgdVec3 dir,
 		     FGHitList *list );
 
-    // Prepare the ssg nodes ... for each tile, set it's proper
+    // Prepare the ssg nodes corresponding to each tile.  For each
-    // transform and update it's range selector based on current
+    // tile, set the ssg transform and update it's range selector
-    // visibilty
+    // based on current visibilty void prep_ssg_nodes( float
-    void prep_ssg_nodes(float visibility_meters);
+    // visibility_meters );
-    void prep_ssg_nodes(float visibility_meters, sgVec3 up, Point3D center);
+    void prep_ssg_nodes( FGLocation *location, float visibility_meters );
 
-    //
+    // Set flag with event manager so that non-moving view refreshes
-    // Set flag with event manager so that non-moving view refreshes tiles...
+    // tiles...
-    //
     void refresh_view_timestamps();
 
     inline SGBucket get_current_bucket () { return current_bucket; }