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Class: Resolv::LOC::Coord

Relationships & Source Files
Inherits: Object
Defined in: lib/resolv.rb

Overview

A Coord

Constant Summary

Class Method Summary

Instance Attribute Summary

Instance Method Summary

Constructor Details

.new(coordinates, orientation) ⇒ Coord

[ GitHub ] 

  


# File 'lib/resolv.rb', line 2752



def initialize(coordinates,orientation)
  unless coordinates.kind_of?(String)
    raise ArgumentError.new("Coord must be a 32bit unsigned integer in hex format: #{coordinates.inspect}")
  end
  unless orientation.kind_of?(String) && orientation[/^lon$|^lat$/]
    raise ArgumentError.new('Coord expects orientation to be a String argument of "lat" or "lon"')
  end
  @coordinates = coordinates
  @orientation = orientation
end


  







Class Method Details



  

    .create(arg)  
  



  

    

Creates a new Coord from arg which may be:


LOC::Coord



returns arg.


String



arg must match the Regex constant




  



  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2731



def self.create(arg)
  case arg
  when Coord
    return arg
  when String
    coordinates = ''
    if Regex =~ arg && $1.to_f < 180
      m = $~
      hemi = (m[4][/[NE]/]) || (m[4][/[SW]/]) ? 1 : -1
      coordinates = [ ((m[1].to_i*(36e5)) + (m[2].to_i*(6e4)) +
                       (m[3].to_f*(1e3))) * hemi+(2**31) ].pack("N")
      orientation = m[4][/[NS]/] ? 'lat' : 'lon'
    else
      raise ArgumentError.new("not a properly formed Coord string: " + arg)
    end
    return Coord.new(coordinates,orientation)
  else
    raise ArgumentError.new("cannot interpret as Coord: #{arg.inspect}")
  end
end


  







Instance Attribute Details



  

    #coordinates   (readonly)
  



  

    

The raw coordinates


  



  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2766



attr_reader :coordinates


  








  

    #orientation   (readonly)
  



  

    

The orientation of the hemisphere as 'lat' or 'lon'


  



  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2770



attr_reader :orientation


  







Instance Method Details



  

    #==(other)  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2795



def ==(other) # :nodoc:
  return @coordinates == other.coordinates
end


  








  

    #eql?(other)  ⇒ Boolean 
  

  

    This method is for internal use only.
  



  

    
  





  


  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2799



def eql?(other) # :nodoc:
  return self == other
end


  








  

    #hash  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2803



def hash # :nodoc:
  return @coordinates.hash
end


  








  

    #inspect  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2791



def inspect # :nodoc:
  return "#<#{self.class} #{self}>"
end


  








  

    #to_s  
  

  

    This method is for internal use only.
  

  [ GitHub ]


  

  


# File 'lib/resolv.rb', line 2772



def to_s # :nodoc:
    c = @coordinates.unpack("N").join.to_i
    val      = (c - (2**31)).abs
    fracsecs = (val % 1e3).to_i.to_s
    val      = val / 1e3
    secs     = (val % 60).to_i.to_s
    val      = val / 60
    mins     = (val % 60).to_i.to_s
    degs     = (val / 60).to_i.to_s
    posi = (c >= 2**31)
    case posi
    when true
      hemi = @orientation[/^lat$/] ? "N" : "E"
    else
      hemi = @orientation[/^lon$/] ? "W" : "S"
    end
    return degs << " " << mins << " " << secs << "." << fracsecs << " " << hemi
end