SCALE = 10000000
def self.included(base)
- base.extend(ClassMethods)
- end
-
- def before_save
- self.update_tile
+ base.scope :bbox, lambda { |bbox| base.where(OSM.sql_for_area(bbox)) }
+ base.before_save :update_tile
end
# Is this node within -90 >= latitude >= 90 and -180 >= longitude >= 180
return self.longitude.to_f / SCALE
end
- # Generic checks that are run for the updates and deletes of
- # node, ways and relations. This code is here to avoid duplication,
- # and allow the extention of the checks without having to modify the
- # code in 6 places for all the updates and deletes. Some of these tests are
- # needed for creates, but are currently not run :-(
- # This will throw an exception if there is an inconsistency
- def check_consistency(old, new, user)
- if new.version != old.version
- raise OSM::APIVersionMismatchError.new(new.version, old.version)
- elsif new.changeset.nil?
- raise OSM::APIChangesetMissingError.new
- elsif new.changeset.empty?
- raise OSM::APIChangesetMissingError.new
- elsif new.changeset.user_id != user.id
- raise OSM::APIUserChangesetMismatchError.new
- elsif not new.changeset.is_open?
- raise OSM::APIChangesetAlreadyClosedError.new
- end
- end
private
def lat2y(a)
180/Math::PI * Math.log(Math.tan(Math::PI/4+a*(Math::PI/180)/2))
end
-
- module ClassMethods
- def 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
- end
end
-