Class: Graticule::Location

Inherits:
Object show all
Defined in:
lib/graticule/location.rb

Overview

A geographic location

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(attrs = {}) ⇒ Location

Returns a new instance of Location.



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# File 'lib/graticule/location.rb', line 10

def initialize(attrs = {})
  attrs.each do |key,value|
    instance_variable_set "@#{key}", value
  end
  self.precision ||= :unknown
end

Instance Attribute Details

#country ⇒ Object

Returns the value of attribute country.



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# File 'lib/graticule/location.rb', line 5

def country
  @country
end

#latitude ⇒ Object

Returns the value of attribute latitude.



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# File 'lib/graticule/location.rb', line 5

def latitude
  @latitude
end

#locality ⇒ Object Also known as: city

Returns the value of attribute locality.



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# File 'lib/graticule/location.rb', line 5

def locality
  @locality
end

#longitude ⇒ Object

Returns the value of attribute longitude.



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# File 'lib/graticule/location.rb', line 5

def longitude
  @longitude
end

#postal_code ⇒ Object Also known as: zip

Returns the value of attribute postal_code.



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# File 'lib/graticule/location.rb', line 5

def postal_code
  @postal_code
end

#precision ⇒ Object

Returns the value of attribute precision.



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# File 'lib/graticule/location.rb', line 5

def precision
  @precision
end

#region ⇒ Object Also known as: state

Returns the value of attribute region.



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# File 'lib/graticule/location.rb', line 5

def region
  @region
end

#street ⇒ Object

Returns the value of attribute street.



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# File 'lib/graticule/location.rb', line 5

def street
  @street
end

#warning ⇒ Object

Returns the value of attribute warning.



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# File 'lib/graticule/location.rb', line 5

def warning
  @warning
end

Instance Method Details

#==(other) ⇒ Object 



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# File 'lib/graticule/location.rb', line 33

def ==(other)
  other.respond_to?(:attributes) ? attributes == other.attributes : false
end

#antipode ⇒ Object Also known as: antipodal_location

Where would I be if I dug through the center of the earth?



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# File 'lib/graticule/location.rb', line 45

def antipode
  Location.new :latitude => -latitude, :longitude => longitude + (longitude >= 0 ? -180 : 180)
end

#attributes ⇒ Object 



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# File 'lib/graticule/location.rb', line 17

def attributes
  [:latitude, :longitude, :street, :locality, :region, :postal_code, :country, :precision].inject({}) do |result,attr|
    result[attr] = self.send(attr) unless self.send(attr).blank?
    result
  end
end

#blank? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/graticule/location.rb', line 24

def blank?
  (attributes.keys - [:precision]).empty?
end

#coordinates ⇒ Object

Returns an Array with latitude and longitude.



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# File 'lib/graticule/location.rb', line 29

def coordinates
  [latitude, longitude]
end

#distance_to(destination, options = {}) ⇒ Object

Calculate the distance to another location. See the various Distance formulas for more information



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# File 'lib/graticule/location.rb', line 39

def distance_to(destination, options = {})
  formula = (options[:formula] || :haversine).to_s.gsub(/^(.)/) { $1.upcase }.gsub(/_(.)/) { $1.upcase }
  Distance.const_get(formula).distance(self, destination, options[:units] || :miles)
end

#to_s(options = {}) ⇒ Object 



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# File 'lib/graticule/location.rb', line 50

def to_s(options = {})
  options = {:coordinates => false, :country => true}.merge(options)
  result = ""
  result << "#{street}\n" if street
  result << [locality, [region, postal_code].compact.join(" ")].compact.join(", ")
  result << " #{country}" if options[:country] && country
  result << "\nlatitude: #{latitude}, longitude: #{longitude}" if options[:coordinates] && [latitude, longitude].any?
  result
end