+
+ before_save :update_tile
+
+ def self.find_by_area(minlat, minlon, maxlat, maxlon, options)
+ self.with_scope(:find => {:conditions => OSM.sql_for_area(minlat, minlon, maxlat, maxlon)}) do
+ return self.find(:all, options)
+ end
+ end
+
+ def update_tile
+ self.tile = QuadTile.tile_for_point(lat, lon)
+ end
+
+ def lat=(l)
+ self.latitude = (l * 10000000).round
+ end
+
+ def lon=(l)
+ self.longitude = (l * 10000000).round
+ end
+
+ def lat
+ return self.latitude.to_f / 10000000
+ end
+
+ def lon
+ return self.longitude.to_f / 10000000
+ end
+
+ def validate_position
+ errors.add_to_base("Node is not in the world") unless in_world?
+ end
+
+ def in_world?
+ return false if self.lat < -90 or self.lat > 90
+ return false if self.lon < -180 or self.lon > 180
+ return true
+ end