class GeoRecord < ActiveRecord::Base
before_save :update_tile
+ # This is a scaling factor for going between the lat and lon via the API
+ # and the longitude and latitude that is stored in the database
+ SCALE = 10000000
+
+ # Is this node within -90 <= latitude <= 90 and -180 <= longitude <= 180
+ # * returns true/false
+ 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
+
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
def lat=(l)
- self.latitude = (l * 10000000).round
+ self.latitude = (l * SCALE).round
end
def lon=(l)
- self.longitude = (l * 10000000).round
+ self.longitude = (l * SCALE).round
end
# Return WGS84 latitude
def lat
- return self.latitude.to_f / 10000000
+ return self.latitude.to_f / SCALE
end
# Return WGS84 longitude
def lon
- return self.longitude.to_f / 10000000
+ return self.longitude.to_f / SCALE
end
# Potlatch projections