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[rails.git] / lib / bounding_box.rb

diff --git a/lib/bounding_box.rb b/lib/bounding_box.rb
index d1c39f1f4dbf73674f6f875d4489c86be17a0c1a..0cc4c5fd432e3ceae3d388aa5687d927e8773d33 100644 (file)
--- a/lib/bounding_box.rb
+++ b/lib/bounding_box.rb
@@ -14,7 +14,7 @@ class BoundingBox
   end
 
   def self.from_s(s)
-    BoundingBox.new(*s.split(/,/)) if s.count(",") == 3
+    BoundingBox.new(*s.split(",")) if s.count(",") == 3
   end
 
   def self.from_bbox_params(params)
@@ -39,19 +39,19 @@ class BoundingBox
     if bbox.complete?
       if bbox.min_lon < min_lon
         @min_lon = [-SCALED_LON_LIMIT,
-                    bbox.min_lon + margin * (min_lon - max_lon)].max
+                    bbox.min_lon + (margin * (min_lon - max_lon))].max
       end
       if bbox.min_lat < min_lat
         @min_lat = [-SCALED_LAT_LIMIT,
-                    bbox.min_lat + margin * (min_lat - max_lat)].max
+                    bbox.min_lat + (margin * (min_lat - max_lat))].max
       end
       if bbox.max_lon > max_lon
         @max_lon = [+SCALED_LON_LIMIT,
-                    bbox.max_lon + margin * (max_lon - min_lon)].min
+                    bbox.max_lon + (margin * (max_lon - min_lon))].min
       end
       if bbox.max_lat > max_lat
         @max_lat = [+SCALED_LAT_LIMIT,
-                    bbox.max_lat + margin * (max_lat - min_lat)].min
+                    bbox.max_lat + (margin * (max_lat - min_lat))].min
       end
     end
     self
@@ -63,8 +63,8 @@ class BoundingBox
     raise OSM::APIBadBoundingBox, "The minimum latitude must be less than the maximum latitude, but it wasn't" if min_lat > max_lat
 
     if min_lon < -LON_LIMIT || min_lat < -LAT_LIMIT || max_lon > +LON_LIMIT || max_lat > +LAT_LIMIT
-      raise OSM::APIBadBoundingBox, "The latitudes must be between #{-LAT_LIMIT} and #{LAT_LIMIT}," \
-                                       " and longitudes between #{-LON_LIMIT} and #{LON_LIMIT}"
+      raise OSM::APIBadBoundingBox, "The latitudes must be between #{-LAT_LIMIT} and #{LAT_LIMIT}, " \
+                                    "and longitudes between #{-LON_LIMIT} and #{LON_LIMIT}"
     end
     self
   end
@@ -72,7 +72,7 @@ class BoundingBox
   def check_size(max_area = Settings.max_request_area)
     # check the bbox isn't too large
     if area > max_area
-      raise OSM::APIBadBoundingBox, "The maximum bbox size is " + max_area.to_s +
+      raise OSM::APIBadBoundingBox, "The maximum bbox size is #{max_area}" \
                                     ", and your request was too large. Either request a smaller area, or use planet.osm"
     end
     self
@@ -89,7 +89,7 @@ class BoundingBox
   end
 
   def complete?
-    !to_a.include?(nil)
+    to_a.exclude?(nil)
   end
 
   def centre_lon
@@ -109,25 +109,25 @@ class BoundingBox
   end
 
   def slippy_width(zoom)
-    width * 256.0 * 2.0**zoom / 360.0
+    width * 256.0 * (2.0**zoom) / 360.0
   end
 
   def slippy_height(zoom)
     min = min_lat * Math::PI / 180.0
     max = max_lat * Math::PI / 180.0
 
-    Math.log((Math.tan(max) + 1.0 / Math.cos(max)) /
-             (Math.tan(min) + 1.0 / Math.cos(min))) *
-      (128.0 * 2.0**zoom / Math::PI)
+    Math.log((Math.tan(max) + (1.0 / Math.cos(max))) /
+             (Math.tan(min) + (1.0 / Math.cos(min)))) *
+      (128.0 * (2.0**zoom) / Math::PI)
   end
 
   # there are two forms used for bounds with and without an underscore,
   # cater for both forms eg minlon and min_lon
   def add_bounds_to(hash, underscore = "")
-    hash["min#{underscore}lat"] = format("%.7f", min_lat)
-    hash["min#{underscore}lon"] = format("%.7f", min_lon)
-    hash["max#{underscore}lat"] = format("%.7f", max_lat)
-    hash["max#{underscore}lon"] = format("%.7f", max_lon)
+    hash["min#{underscore}lat"] = format("%<lat>.7f", :lat => min_lat)
+    hash["min#{underscore}lon"] = format("%<lon>.7f", :lon => min_lon)
+    hash["max#{underscore}lat"] = format("%<lat>.7f", :lat => max_lat)
+    hash["max#{underscore}lon"] = format("%<lon>.7f", :lon => max_lon)
     hash
   end
 
@@ -157,14 +157,14 @@ class BoundingBox
     private
 
     def from_bbox_array(bbox_array)
-      raise OSM::APIBadUserInput, "The parameter bbox is required, and must be of the form min_lon,min_lat,max_lon,max_lat" unless bbox_array
+      raise OSM::APIBadUserInput, "The parameter bbox must be of the form min_lon,min_lat,max_lon,max_lat" unless bbox_array
 
       # Take an array of length 4, create a bounding box with min_lon, min_lat, max_lon and
       # max_lat within their respective boundaries.
-      min_lon = [[bbox_array[0].to_f, -LON_LIMIT].max, +LON_LIMIT].min
-      min_lat = [[bbox_array[1].to_f, -LAT_LIMIT].max, +LAT_LIMIT].min
-      max_lon = [[bbox_array[2].to_f, +LON_LIMIT].min, -LON_LIMIT].max
-      max_lat = [[bbox_array[3].to_f, +LAT_LIMIT].min, -LAT_LIMIT].max
+      min_lon = bbox_array[0].to_f.clamp(-LON_LIMIT, +LON_LIMIT)
+      min_lat = bbox_array[1].to_f.clamp(-LAT_LIMIT, +LAT_LIMIT)
+      max_lon = bbox_array[2].to_f.clamp(-LON_LIMIT, +LON_LIMIT)
+      max_lat = bbox_array[3].to_f.clamp(-LAT_LIMIT, +LAT_LIMIT)
       BoundingBox.new(min_lon, min_lat, max_lon, max_lat)
     end
   end