From 56d6ecbf83095aa1e172a9e403740738f60f4b2b Mon Sep 17 00:00:00 2001
From: curt <curt>
Date: Sun, 17 Mar 2002 00:36:39 +0000
Subject: [PATCH] Oops, fixing the ghosts of bugs past. :-)  Good thing I
 remembered how I fixed this when I made the mistake the first time. The view
 code wasn't properly handling the transition across tile boundaries so we'd
 get a 'flash' of the scene wrongly transformed for one frame at every tile
 boundary crossing.  This is what scenery.get_next_center() is for.

---
 src/Main/viewer.cxx | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/src/Main/viewer.cxx b/src/Main/viewer.cxx
index e1e7782fb..2628efc8f 100644
--- a/src/Main/viewer.cxx
+++ b/src/Main/viewer.cxx
@@ -107,7 +107,7 @@ FGViewPoint::recalc () const
   Point3D p = Point3D(_lon_deg * SG_DEGREES_TO_RADIANS,
 		      lat_geoc_rad,
 		      sea_level_radius_m);
-  Point3D tmp = sgPolarToCart3d(p) - scenery.get_center();
+  Point3D tmp = sgPolarToCart3d(p) - scenery.get_next_center();
   sgSetVec3(_zero_elev_view_pos, tmp[0], tmp[1], tmp[2]);
 
 				// Calculate the absolute view position
@@ -120,9 +120,9 @@ FGViewPoint::recalc () const
 				// from the scenery center.
   sgdVec3 scenery_center;
   sgdSetVec3(scenery_center,
-	     scenery.get_center().x(),
-	     scenery.get_center().y(),
-	     scenery.get_center().z());
+	     scenery.get_next_center().x(),
+	     scenery.get_next_center().y(),
+	     scenery.get_next_center().z());
   sgdVec3 view_pos;
   sgdSubVec3(view_pos, _absolute_view_pos, scenery_center);
   sgSetVec3(_relative_view_pos, view_pos);
-- 
2.39.5