4 extend ActiveSupport::Concern
6 # Ensure that when coordinates are printed that they are always in decimal degrees,
8 # Unfortunately you can't extend Numeric classes directly (e.g. `Coord < Float`).
9 class Coord < DelegateClass(Float)
19 # This scaling factor is used to convert between the float lat/lon that is
20 # returned by the API, and the integer lat/lon equivalent that is stored in
25 scope :bbox, ->(bbox) { where(OSM.sql_for_area(bbox)) }
26 before_save :update_tile
29 # Is this node within -90 >= latitude >= 90 and -180 >= longitude >= 180
30 # * returns true/false
32 return false if lat < -90 || lat > 90
33 return false if lon < -180 || lon > 180
39 self.tile = QuadTile.tile_for_point(lat, lon)
43 self.latitude = (l * SCALE).round
47 self.longitude = (l * SCALE).round
50 # Return WGS84 latitude
52 Coord.new(latitude.to_f / SCALE)
55 # Return WGS84 longitude
57 Coord.new(longitude.to_f / SCALE)