Make sure the ruby quadtile code give the same result as the C version

[rails.git] / lib / map_boundary.rb

diff --git a/lib/map_boundary.rb b/lib/map_boundary.rb
index da7e44b3299278110e321a7743ac09fd4d6aa05e..b3085d0ec0c83ed6ceb3150bca329eb35d28dd1e 100644 (file)
--- a/lib/map_boundary.rb
+++ b/lib/map_boundary.rb
@@ -1,30 +1,31 @@
 module MapBoundary
+  # Take an array of length 4, and return the min_lon, min_lat, max_lon and 
+  # max_lat within their respective boundaries.
   def sanitise_boundaries(bbox)
-    min_lon = [bbox[0].to_f,-180].max
-    min_lat = [bbox[1].to_f,-90].max
-    max_lon = [bbox[2].to_f,+180].min
-    max_lat = [bbox[3].to_f,+90].min
-
+    min_lon = [[bbox[0].to_f,-180].max,180].min
+    min_lat = [[bbox[1].to_f,-90].max,90].min
+    max_lon = [[bbox[2].to_f,+180].min,-180].max
+    max_lat = [[bbox[3].to_f,+90].min,-90].max
     return min_lon, min_lat, max_lon, max_lat
   end
 
-  def check_boundaries(min_lon, min_lat, max_lon, max_lat)
+  def check_boundaries(min_lon, min_lat, max_lon, max_lat, max_area = MAX_REQUEST_AREA)
     # check the bbox is sane
     unless min_lon <= max_lon
-      raise("The minimum longitude must be less than the maximum longitude, but it wasn't")
+      raise OSM::APIBadBoundingBox.new("The minimum longitude must be less than the maximum longitude, but it wasn't")
     end
     unless min_lat <= max_lat
-      raise("The minimum latitude must be less than the maximum latitude, but it wasn't")
+      raise OSM::APIBadBoundingBox.new("The minimum latitude must be less than the maximum latitude, but it wasn't")
     end
     unless min_lon >= -180 && min_lat >= -90 && max_lon <= 180 && max_lat <= 90
       # Due to sanitize_boundaries, it is highly unlikely we'll actually get here
-      raise("The latitudes must be between -90 and 90, and longitudes between -180 and 180")
+      raise OSM::APIBadBoundingBox.new("The latitudes must be between -90 and 90, and longitudes between -180 and 180")
     end
 
     # check the bbox isn't too large
     requested_area = (max_lat-min_lat)*(max_lon-min_lon)
-    if requested_area > APP_CONFIG['max_request_area']
-      raise("The maximum bbox size is " + APP_CONFIG['max_request_area'].to_s + 
+    if requested_area > max_area
+      raise OSM::APIBadBoundingBox.new("The maximum bbox size is " + max_area.to_s + 
         ", and your request was too large. Either request a smaller area, or use planet.osm")
     end
   end