#! /bin/sh /usr/share/dpatch/dpatch-run
## gpsdrive2.10pre7_osm_proj.patch by H. Bowman <hamish_b yahoo com>
##
## DP: Fix OpenStreetMap projection handling (backport from upstream)

@DPATCH@
Index: src/map_download.c
===================================================================
--- src/map_download.c	(revision 2476)
+++ src/map_download.c	(revision 2477)
@@ -61,8 +61,8 @@
 # endif
 
 
-#include <gpsdrive.h>
-#include <map_handler.h>
+#include "gpsdrive.h"
+#include "map_handler.h"
 #include "gpsdrive_config.h"
 #include "gui.h"
 #include "map_download.h"
@@ -133,24 +133,20 @@
 	MAPSOURCE_LANDSAT, "1 : 50 million", 0, 50000000,
 
 	MAPSOURCE_OSM_TAH, "OpenStreetMap Tiles@Home", -1, -1,
-	MAPSOURCE_OSM_TAH, "1 : 147 456 000", 1, 256*576000,
-	MAPSOURCE_OSM_TAH, "1 : 73 728 000", 2, 128*576000,
-	MAPSOURCE_OSM_TAH, "1 : 36 864 000", 3, 64*576000,
-	MAPSOURCE_OSM_TAH, "1 : 18 432 000", 4, 32*576000,
-	MAPSOURCE_OSM_TAH, "1 : 9 216 000", 5, 16*576000,
-	MAPSOURCE_OSM_TAH, "1 : 4 608 000", 6, 8*576000,
-	MAPSOURCE_OSM_TAH, "1 : 2 304 000", 7, 4*576000,
-	MAPSOURCE_OSM_TAH, "1 : 1 152 000", 8, 2*576000,
-
-	MAPSOURCE_OSM_TAH, "1 : 576 000", 9, 576000,
-	MAPSOURCE_OSM_TAH, "1 : 288 000", 10, 288000,
-	MAPSOURCE_OSM_TAH, "1 : 144 000", 11, 144000,
-	MAPSOURCE_OSM_TAH, "1 : 72 000", 12, 72000,
-	MAPSOURCE_OSM_TAH, "1 : 36 000", 13, 36000,
-	MAPSOURCE_OSM_TAH, "1 : 18 000", 14, 18000,
-	MAPSOURCE_OSM_TAH, "1 : 9 000", 15, 9000,
-	MAPSOURCE_OSM_TAH, "1 : 4 500", 16, 4500,
-	MAPSOURCE_OSM_TAH, "1 : 2 250", 17, 2250,
+	/* scale varies with latitude, so this is just a rough guide
+		which will only be valid for mid-lats */
+	/* Octave code: for lat=0:5:75;   disp( [lat (a * 2*pi *pixelfact * cos(lat  * pi/180))  / (256*2^9)]); end */
+	MAPSOURCE_OSM_TAH, "1 : 2 500", 17, 2250,
+	MAPSOURCE_OSM_TAH, "1 : 5 000", 16, 4500,
+	MAPSOURCE_OSM_TAH, "1 : 10 000", 15, 9000,
+	MAPSOURCE_OSM_TAH, "1 : 20 000", 14, 18000,
+	MAPSOURCE_OSM_TAH, "1 : 40 000", 13, 36000,
+	MAPSOURCE_OSM_TAH, "1 : 75 000", 12, 72000,
+	MAPSOURCE_OSM_TAH, "1 : 150 000", 11, 144000,
+	MAPSOURCE_OSM_TAH, "1 : 300 000", 10, 288000,
+	MAPSOURCE_OSM_TAH, "1 : 600 000", 9, 576000,
+	/* the distortion gets too bad at scales wider than 1:500k
+	    It would be more accurate to stop earlier, but we compromise */
 	MAPSOURCE_N_ITEMS, "", 0, 0
 };
 
@@ -165,7 +161,23 @@
 	gtk_entry_set_text (GTK_ENTRY (lon_entry), lon);
 }
 
+/* *****************************************************************************
+ * calculate the local map scale based on Web Tile zoom level and latitude
+ */
+double
+calc_webtile_scale (double lat, int zoom)
+{
+    double scale;
+    double a = 6378137.0; /* major radius of WGS84 ellipsoid (meters) */
 
+    scale = (a * 2*M_PI * cos(DEG2RAD(lat)) * PIXELFACT) / (256 * pow(2,zoom));
+
+    if (mydebug > 3)
+	g_print ("Tile scale: %.2f\n", scale);
+
+    return scale;
+}
+
 /* *****************************************************************************
  * callback to set paramaters for map to download
  */
@@ -195,9 +207,13 @@
 			3, &mapdl_scale, -1);
 /* TODO: determine map_ or top_ proj at this point so drawdownloadrectangle()
  *	 knows how big to draw the green preview box */
+		if (local_config.mapsource_type == MAPSOURCE_OSM_TAH)
+		    mapdl_scale = (int)calc_webtile_scale(mapdl_lat, mapdl_zoom);
+
 		if (mydebug > 3)
 			g_print ("new map scale/zoom level: %d / %d\n",
 				mapdl_scale, mapdl_zoom);
+
 		local_config.mapsource_scale = gtk_combo_box_get_active (GTK_COMBO_BOX (scale_combobox));
 		current.needtosave = TRUE;
 	}
@@ -439,6 +455,7 @@
 	gchar file_path[512];
 	gchar path[40];
 	gchar img_fmt[4];
+	gchar scale_str[40];
 
 	if (mapdl_active)
 		return TRUE;
@@ -450,11 +467,14 @@
 			g_strlcpy (path, "landsat", sizeof (path));
 			g_strlcpy (img_fmt, "jpg", sizeof (img_fmt));
 			mapdl_geturl_landsat ();
+			g_snprintf (scale_str, sizeof (scale_str), "%d", mapdl_scale);
 			break;
 		case MAPSOURCE_OSM_TAH:
 			g_strlcpy (path, "openstreetmap_tah", sizeof (path));
 			g_strlcpy (img_fmt, "png", sizeof (img_fmt));
 			mapdl_geturl_osm_tah ();
+			mapdl_scale = (int)calc_webtile_scale(mapdl_lat, mapdl_zoom);
+			g_snprintf (scale_str, sizeof (scale_str), "%d", mapdl_zoom);
 			break;
 		default:
 			return TRUE;
@@ -464,10 +484,11 @@
 		g_print ("  download url:\n%s\n", mapdl_url);
 
 	/* set file path and create directory if necessary */
-	
-	
-	g_snprintf (file_path, sizeof (file_path), "%s%s/%d/%.0f/%.0f/",
-		local_config.dir_maps, path, mapdl_scale, mapdl_lat, mapdl_lon);
+
+	g_snprintf (file_path, sizeof (file_path), "%s%s/%s/%.0f/%.0f/",
+		local_config.dir_maps, path, scale_str, mapdl_lat, mapdl_lon);
+
+
 	if(!g_file_test (file_path, G_FILE_TEST_IS_DIR))
 	{
 		if (g_mkdir_with_parents (file_path, 0700))
@@ -477,14 +498,15 @@
 	}
 
 	/* complete filename */
-	g_snprintf (mapdl_file_w_path, sizeof (mapdl_file_w_path), "%s%s_%d_%5.3f_%5.3f.%s",
-		file_path, mapdl_proj, mapdl_scale, mapdl_lat, mapdl_lon, img_fmt);
+	g_snprintf (mapdl_file_w_path, sizeof (mapdl_file_w_path), "%s%s_%s_%5.3f_%5.3f.%s",
+		file_path, mapdl_proj, scale_str, mapdl_lat, mapdl_lon, img_fmt);
 
 	if (mydebug > 10)
 		g_print ("  filename: %s\n", mapdl_file_w_path);
 
 	gtk_progress_bar_set_text (GTK_PROGRESS_BAR (mapdl_progress),
 		_("Loading Map..."));
+
 	mapdl_abort = FALSE;
 	mapdl_download ();
 
Index: src/map_download.h
===================================================================
--- src/map_download.h	(revision 2476)
+++ src/map_download.h	(revision 2477)
@@ -1,10 +1,9 @@
 /***********************************************************************
 
 Copyright (c) 2008 Guenther Meyer <d.s.e (at) sordidmusic.com>
-
 Website: www.gpsdrive.de/
 
-Disclaimer: Please do not use for navigation.
+Disclaimer: Please do not use as a primary means of navigation.
 
     This program is free software; you can redistribute it and/or modify
     it under the terms of the GNU General Public License as published by
@@ -36,5 +35,6 @@
 void mapdl_set_coords (gchar *lat, gchar *lon);
 gint mapdl_init (void);
 gint mapdl_cleanup (void);
+double calc_webtile_scale (double, int);
 
 #endif /* GPSDRIVE_MAP_DOWNLOAD_H */
Index: scripts/gpsfetchmap.pl
===================================================================
--- scripts/gpsfetchmap.pl	(revision 2479)
+++ scripts/gpsfetchmap.pl	(revision 2480)
@@ -47,6 +47,7 @@
 modified (Jul 2007) by Maciek Kaliszewski <mkalkal\@interia.pl>
 modified (Oct 2007) by Andreas Putzo <andreas\@putzo.net>
 modified (Jan 2008) by Gernot Hillier <gernot\@hillier.de> (added Openstreetmap support)
+modified (Aug 2009) by Hamish Bowman <hamish_b yahoo com> (fix OSM+WMS map scales)
 Version svn-$Version
 ";
 
@@ -151,24 +152,20 @@
       10000000 =>10000000,
       50000000 =>50000000,
     },
+# Web Map Tiles scale varies with latitude by the formula
+# (a * 2*pi * PIXELFACT * cos(lat * pi/180)) / (256 * 2^zoom)
+# where a is major radius of the Earth according to the WGS84 ellipsoid definition.
+# zoom levels lower than 9 (~1:500k) badly distort the Mercator so are not offered.
     openstreetmap_tah => {
-      256*576000 =>  1,
-      128*576000 =>  2,
-       64*576000 =>  3,
-       32*576000 =>  4,
-       16*576000 =>  5,
-        8*576000 =>  6,
-        4*576000 =>  7,
-        2*576000 =>  8,
-          576000 =>  9,
-          288000 => 10,
-          144000 => 11,
-           72000 => 12,
-           36000 => 13,
-           18000 => 14,
-           9000  => 15,
-            4500 => 16,
-            2250 => 17
+          600000 =>  9,
+          300000 => 10,
+          150000 => 11,
+           75000 => 12,
+           40000 => 13,
+           20000 => 14,
+           10000 => 15,
+            5000 => 16,
+            2500 => 17
     }
 };
 
@@ -240,8 +237,6 @@
     $polite=1;
 }
 
-
-
 if ( $mapserver eq 'geoscience' )
 {
     $scale ||= join(",",keys %{$Scale2Zoom->{'geoscience'}});
@@ -269,22 +264,24 @@
 pod2usage(-verbose=>2) if $man;
 
 sub append_koords($$$$);   # {}
+sub calc_webtile_scale ($$); # {}
 sub check_coverage($);     # {}
 sub check_koord_file($);   # {}
 sub debug($);              # {}
+sub file_count($);         # {}
 sub geoscience_url($$$);   # {}
-sub landsat_url($$$);   # {}
-sub resize($$); #{}
-sub file_count($);         # {}
 sub get_coords_for_route;  # {}
 sub get_coords_for_track($); # {}
+sub get_gpsd_position();   # {}
 sub get_waypoint($);       # {}
 sub is_map_file($);        # {}
+sub landsat_url($$$);      # {}
+sub openstreetmap_tah_url($$$); # {}
 sub read_gpstool_map_file(); # {}
 sub read_koord_file($);    # {}
+sub resize($$);            # {}
 sub update_gpsdrive_map_koord_file(); # {}
 sub wget_map($$$);         # {}
-sub get_gpsd_position();       # {}
 
 STDERR->autoflush(1);
 STDOUT->autoflush(1);
@@ -407,7 +404,9 @@
 
 my ($existing,$wanted) = file_count($desired_locations);
 print "You are about to download $wanted (".($existing+$wanted).") file(s).\n";
-
+if ($debug) {
+    print "Politeness delay set to $polite seconds,\n";
+}
 if ( $mapserver eq 'geoscience' ){
     print "+-----------------------------------------------------------+\n";
     print "| Geoscience Maps are Copyright, Commonwealth of Australia  |\n";
@@ -419,6 +418,7 @@
     print "+----------------------------------------------------------------+\n";
     print "| Landsat maps are courtesy JPL/NASA's OnEarth WMS Global Mosaic |\n";
     print "| Map prefix will be set automatically based on scale.           |\n";
+    print "+----------------------------------------------------------------+\n";
     # By law, US Government data is without copyright.
 }elsif ( $mapserver eq 'openstreetmap_tah' ){
     print "+-----------------------------------------------------------+\n";
@@ -427,6 +427,8 @@
     print "| They are free for use under the terms of the              |\n";
     print "| Creative Commons \"Attribution-Share Alike 2.0 Generic\"    |\n";
     print "| license. See http://www.openstreetmap.org for details.    |\n";
+    print "+-----------------------------------------------------------+\n";
+
 } elsif ( ! $force) {
     print "You may violating the map servers terms of use!\n";
     print "Please use their service responsible!\n";
@@ -654,14 +656,32 @@
 ######################################################################
 sub map_filename($$$){
     my ($scale,$lati,$long) = @_;
+
+    my $mscale = $scale;
+
+    if ( $mapserver eq 'openstreetmap_tah' ) {
+	my $zoom = undef;
+	for my $s ( sort keys %{$Scale2Zoom->{openstreetmap_tah}} ) {
+	    next unless $s == $scale;
+	    $zoom = $Scale2Zoom->{openstreetmap_tah}->{$s};
+	    last;
+	}
+	unless ( $zoom ) {
+	    print "Error calculating Zoomlevel for Scale: $scale\n";
+	    return (undef);
+	}
+	$mscale = $zoom;
+    }
     
-    my $filename = "$mapserver/$scale"
+    my $filename = "$mapserver/$mscale"
 	."/".int($lati)
 #	."/".sprintf("%3.1f",$lati)
 	."/".int($long)
-	."/$FILEPREFIX$scale-$lati-$long.$fileext";
-    printf("Filename(%.0f,%.5f,%.5f): $filename\n",$scale,$lati,$long)
+	."/$FILEPREFIX$mscale-$lati-$long.$fileext";
+
+    printf("Filename(%.0f,%.5f,%.5f): $filename\n",$mscale,$lati,$long)
 	if $debug;
+
     return $filename;
 }
 
@@ -678,6 +698,9 @@
     # mapblast/1000/047/047.0232/9/map_1000-047.0232-0009.8140.gif 47.02320 9.81400 1000
     #my $filename = "$mapserver/$scale/".int($lati)."/".sprintf("%3.1f",$lati).
     #"/".int($long)."/$FILEPREFIX$scale-$lati-$long.gif";
+    if ($debug) {
+	print "---------------\n";
+    }
 
     # redundant??
     if ($mapserver eq 'landsat')
@@ -1082,7 +1105,7 @@
 	    $lon2 += 360;
 	}
 
-    debug( "landsat_url(LAT=$lat,LON=$lon,SCALE=$scale,FACTOR=$factor)");
+    debug( "landsat_url(LAT=$lat,LON=$lon,SCALE=$scale)");
 
     debug( "Calculated Lat1  $lat1");
     debug( "Calculated Lat2  $lat2");
@@ -1111,7 +1134,28 @@
     return ($url,$scale);
 }
 
+
 #############################################################################
+# calculate the local map scale based on Web Tile zoom level and latitude
+# This same formula is used by OSM, Google Maps, Microsoft Maps, ...
+sub calc_webtile_scale ($$){
+    my $lat = shift;
+    my $zoom = shift;
+
+    # major radius of WGS84 ellipsoid (meters)
+    my $a = $RADIUS_KM * 1000;
+
+    my $zscale = (2*$a*$PI * cos($lat*$D2R) * $PIXELFACT) / (256 * 2**$zoom);
+
+    if ($debug) {
+        print "Tile scale: $zscale\n";
+    }
+
+    return ($zscale);
+}
+
+
+#############################################################################
 sub openstreetmap_tah_url($$$){
     my $lati = shift;
     my $long = shift;
@@ -1122,7 +1166,7 @@
     for my $s ( sort keys %{$Scale2Zoom->{openstreetmap_tah}} ) {
 	next unless $s == $scale;
 	$zoom = $Scale2Zoom->{openstreetmap_tah}->{$s};
-	$mapscale = $s;
+	$mapscale = calc_webtile_scale($lati, $zoom);
 	last;
     }
 
@@ -1132,10 +1176,9 @@
     }
 
     if ($debug) {
-	print "\n";
-	print "Using openstreetmap_tah zoom ", $zoom, " for requested scale ", $scale, ":1 actual scale ", $mapscale, ":1\n";
-	print "lat: $lati\n";
-	print "lon: $long\n";
+	print "Using openstreetmap_tah zoom ", $zoom, " for requested scale 1:", $scale, ". Actual scale 1:", $mapscale, "\n";
+	print "cetner lat: $lati\n";
+	print "cetner lon: $long\n";
     }
 
     my $url = "http://tah.openstreetmap.org/MapOf/?lat=$lati&long=$long&z=$zoom&w=1280&h=1024&format=png";
@@ -1903,7 +1946,7 @@
 
 gpsfetchmap -w <WAYPOINT NAME> -sc <SCALE> -a <#> -p
 
-gpsfetchmap -la <latitude DD.DDDD> -lo <latitude DD.DDDD> -sc <SCALE> -a <#> -p
+gpsfetchmap -la <latitude DD.DDDD> -lo <longitude DD.DDDD> -sc <SCALE> -a <#> -p
 
 gpsfetchmap -sla <start latitude DD.DDDD> -endla <end latitude DD.DDDD> -slo <start longitude DD.DDDD> -endlo <end longitude DD.DDDD> -sc <SCALE> -a <#> -p
 
@@ -1915,7 +1958,7 @@
             [-la <latitude DD.DDDD>] [-lo <longitude DD.DDDD>] 
             [-sla <start latitude DD.DDDD>] [-endla <end latitude DD.DDDD>]
             [-slo <start longitude DD.DDDD>] [-endlo <end longitude DD.DDDD>]
-            [-sc <SCALE>] [-a <#>] [-p] [-m <MAPSERVER>]
+            [-sc <SCALE>] [-a <#>] [-p <#>] [-m <MAPSERVER>]
             [-u <UNIT>] [-md <DIR>] [-W <FILE>] [-t <FILE>] [-r]
             [-C <FILE>] [-P <PREFIX>] [-F] [-d] [-v] [-h] [-M] [-n] [-U] [-c]
 
@@ -2000,7 +2043,7 @@
 of longitude. 'units' is read from the configuration file (-C) or as defined
 by (-u).
 
-=item B<-p, --polite>
+=item B<-p, --polite <#>>
 
 This causes the program to sleep one second between downloads to be polite
 to the mapserver. Takes an optional value of number of seconds to sleep.
@@ -2117,6 +2160,13 @@
 
 Prints the manual page and exits.
 
+=back
+
+
+=head1 OUTPUT
+
+=over 2
+
 =item B<Download>
 
 When downloading Maps the output reads as folows:
@@ -2130,5 +2180,16 @@
 
 =back
 
+
+=head1 EXAMPLE
+
+Download all 1:10000 OpenStreetMaps in a 5 km radius around the
+Sydney Convention Centre. Between tile downloads it will let
+the server rest for 3 seconds.
+ 
+gpsfetchmap --mapserver openstreetmap_tah --polite 3 \
+   --lat "-33.8753" --lon 151.2001 --scale 10000 \
+   --area 5 --unit kilometers
+
 =cut
 
Index: scripts/mapnik/gpsdrive_mapnik_gentiles-in.py
===================================================================
--- scripts/mapnik/gpsdrive_mapnik_gentiles-in.py	(revision 2473)
+++ scripts/mapnik/gpsdrive_mapnik_gentiles-in.py	(revision 2479)
@@ -7,14 +7,20 @@
 
 Options:
   -h, --help     show this help
-  -b, --bbox     boundingbox (lon,lat,lon,lat) - Be carefull! Quote negative values!
-  -s, --scale    scale single/range
-                              1 = 147456000
-                              2 = 73728000
-                             ...
-                             15 = 9000
-                             16 = 4500
-                             17 = 2250
+  -b, --bbox     boundingbox (minlon,minlat,maxlon,maxlat)
+                  - Be carefull! "Quote" negative values!
+  -s, --scale    scale single/range (zoom level or min-max)
+                   (below "9" Mercator becomes distorted;
+		    actual scale will vary with latitude)
+                        9 - 1:600,000
+                       10 - 1:300,000
+                       11 - 1:150,000
+                       12 - 1:75,000
+                       13 - 1:40,000
+                       14 - 1:20,000
+                       15 - 1:10,000
+                       16 - 1:5,000
+                       17 - 1:2,500
   --test         testrun = generates Munich example
                              
 Examples:
@@ -22,7 +28,7 @@
   Munich:
     gpsdrive_mapnik_gentiles.py -b  11.4,48.07,11.7,48.2 -s 10-16
   
-  World:
+  World: (just to demonstrate lat/lon order; scale not recommended)
     gpsdrive_mapnik_gentiles.py -b "-180.0,-90.0,180.0,90.0" -s 1-6
 """
 
@@ -32,12 +38,19 @@
 import getopt
 import string
 
-zoom2scale = [728 * 576000,256 * 576000,128 * 576000,64 * 576000,32 * 576000,16 * 576000,8 * 576000,4 * 576000,2 * 576000,576000,288000,144000,72000,36000,18000,9000,4500,2250,1125]
 
-
 DEG_TO_RAD = pi/180
 RAD_TO_DEG = 180/pi
 
+def calc_scale (lat, zoom):
+    # GpsDrive's hardcoded pixels per meter ratio
+    PixelFact = 2817.947378
+    # wgs84 major Earth axis
+    a = 6378137.0
+    dynscale = ( a * 2*pi * cos(lat * DEG_TO_RAD) * PixelFact ) / ( 256*pow(2,zoom) )
+    print dynscale
+    return dynscale
+
 def minmax (a,b,c):
     a = max(a,b)
     a = min(a,c)
@@ -90,17 +103,28 @@
          os.mkdir(tile_dir)
 
     gprj = GoogleProjection(maxZoom+1) 
+
     #m = Map(2 * 256,2 * 256)
     m = Map(1280,1024)
     load_map(m,mapfile)
-    prj = Projection("+proj=merc +datum=WGS84")
-    
+
+    #prj = Projection("+proj=merc +datum=WGS84")
+    # What follows is from /usr/share/proj/esri.extra, EPSG:900913
+    #  "Chris' funny epsgish code for the google mercator"
+    prj = Projection("+proj=merc +a=6378137 +b=6378137 +lat_ts=0.0 +lon_0=0.0 +x_0=0.0 +y_0=0 +k=1.0 +units=m +nadgrids=@null +wktext +no_defs")
+
     ll0 = (bbox[0],bbox[3])
     ll1 = (bbox[2],bbox[1])
-    
+
     for z in range(minZoom,maxZoom + 1):
+        if z == 9:
+            print "CAUTION: Mercator projection begins to be noticeably distorted at this zoom level."
+        elif z < 9:
+            print "WARNING: Mercator projection is very distorted at this zoom level."
+
         px0 = gprj.fromLLtoPixel(ll0,z)
         px1 = gprj.fromLLtoPixel(ll1,z)
+
         for x in range(int(px0[0]/640.0),int(px1[0]/640.0)+1):
             for y in range(int(px0[1]/512.0),int(px1[1]/512.0)+1):
                 p0 = gprj.fromPixelToLL((x * 640.0, (y+1) * 512.0),z)
@@ -145,7 +169,7 @@
                     fh_mapkoord.write(tile_path + " ")
                     fh_mapkoord.write(str((p0[1] + p1[1]) / 2) + " ")
                     fh_mapkoord.write(str((p0[0] + p1[0]) / 2) + " ")
-                    fh_mapkoord.write(str(zoom2scale[z]))
+                    fh_mapkoord.write(str( calc_scale( (p0[1] + p1[1])/2, z) ))
                     fh_mapkoord.write(" " + str(p0[1]) + " " + str(p0[0]))
                     fh_mapkoord.write(" " + str(p1[1]) + " " + str(p1[0]))
                     fh_mapkoord.write("\n")
@@ -221,6 +245,7 @@
     
     # check for correct values
     if str(eval(bboxs[0])) != bboxs[0] or str(eval(bboxs[1])) != bboxs[1] or str(eval(bboxs[2])) != bboxs[2] or str(eval(bboxs[3])) != bboxs[3]:
+        # rounding problems... what exactly is this supposed to be checking ???
         sys.exit("Boundingbox invalid!")
         
     if minZoom < 1 or minZoom > 17 or maxZoom < 1 and maxZoom > 17 or minZoom > maxZoom or int(minZoom) <> minZoom or int(maxZoom) <> maxZoom: