Boolean uniforms are now updatable by properties

[simgear.git] / simgear / bucket / newbucket.hxx

diff --git a/simgear/bucket/newbucket.hxx b/simgear/bucket/newbucket.hxx
index 58008e5c06ec21735b3dc3ec045df8709e2e9ab7..56333c4d670e4b985529fa289be32fec6fe77a2b 100644 (file)
--- a/simgear/bucket/newbucket.hxx
+++ b/simgear/bucket/newbucket.hxx
@@ -24,6 +24,11 @@
 
 /** \file newbucket.hxx
  * A class and associated utiltity functions to manage world scenery tiling.
+ *
+ * Tile borders are aligned along circles of latitude and longitude.
+ * All tiles are 1/8 degree of latitude high and their width in degrees
+ * longitude depends on their latitude, adjusted in such a way that
+ * all tiles cover about the same amount of area of the earth surface.
  */
 
 #ifndef _NEWBUCKET_HXX
@@ -211,9 +216,9 @@ public:
        double span = sg_bucket_span( lat + y / 8.0 + SG_HALF_BUCKET_SPAN );
 
        if ( span >= 1.0 ) {
-           return lon + span / 2.0;
+           return lon + get_width() / 2.0;
        } else {
-           return lon + x * span + span / 2.0;
+           return lon + x * span + get_width() / 2.0;
        }
     }