class Resolv::LOC::Coord

A Resolv::LOC::Coord

Constants

Bias: Bias for the equator/prime meridian, in thousandths of a second of arc.
Regex: Regular expression LOC Coord must match.

Attributes

coordinates [R]

The raw coordinates

orientation [R]

The orientation of the hemisphere as ‘lat’ or ‘lon’

Public Class Methods

create (arg)

Creates a new LOC::Coord from arg which may be:

LOC::Coord: returns arg.
String: arg must match the LOC::Coord::Regex constant

# File lib/resolv.rb, line 3530
def self.create(arg)
  case arg
  when Coord
    return arg
  when String
    unless m = Regex.match(arg)
      raise ArgumentError.new("not a properly formed Coord string: " + arg)
    end

    arc = (m[1].to_i * 3_600_000) + (m[2].to_i * 60_000) + (m[3].to_f * 1_000).to_i
    dir = m[4]
    lat = dir[/[NS]/]
    unless arc <= (lat ? 324_000_000 : 648_000_000) # (lat ? 90 : 180) * 3_600_000
      raise ArgumentError.new("out of range as Coord: #{arg}")
    end

    hemi = dir[/[NE]/] ? 1 : -1
    return new([arc * hemi + Bias].pack("N"), lat ? "lat" : "lon")
  else
    raise ArgumentError.new("cannot interpret as Coord: #{arg.inspect}")
  end
end

new (coordinates,orientation)

Internal use; use self.create.

# File lib/resolv.rb, line 3554
def initialize(coordinates,orientation)
  unless coordinates.kind_of?(String) and coordinates.bytesize == 4
    raise ArgumentError.new("Coord must be a 32bit unsigned integer in hex format: #{coordinates.inspect}")
  end
  unless orientation == "lon" || orientation == "lat"
    raise ArgumentError.new('Coord expects orientation to be a String argument of "lat" or "lon"')
  end
  @coordinates = coordinates
  @orientation = orientation
end