Class: AIXM::D

Inherits:
Object show all
Extended by:
Forwardable
Includes:
Comparable
Defined in:
lib/aixm/d.rb

Overview

Distance or length

Examples:

AIXM.d(123, :m)

Constant Summary collapse

UNITS = 
{
  ft: { km: 0.0003048, m: 0.3048, nm: 0.000164578833554 },
  km: { ft: 3280.839895, m: 1000, nm: 0.539956803 },
  m: { ft: 3.280839895, km: 0.001, nm: 0.000539956803 },
  nm: { ft: 6076.11548554, km: 1.852, m: 1852 }
}.freeze

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(dist, unit) ⇒ D

Returns a new instance of D.


30
31
32
 
# File 'lib/aixm/d.rb', line 30

def initialize(dist, unit)
  self.dist, self.unit = dist, unit
end

Instance Attribute Details

#dist ⇒ Float

Returns distance.

Returns:

  • (Float) —

    distance


25
26
27
 
# File 'lib/aixm/d.rb', line 25

def dist
  @dist
end

#unit ⇒ Symbol

Returns unit (see UNITS).

Returns:

  • (Symbol) —

    unit (see UNITS)


28
29
30
 
# File 'lib/aixm/d.rb', line 28

def unit
  @unit
end

Instance Method Details

#<=>(other) ⇒ Integer

Returns:

  • (Integer)

See Also:

  • Object#<=>

69
70
71
 
# File 'lib/aixm/d.rb', line 69

def <=>(other)
  dist <=> other.send(:"to_#{unit}").dist
end

#==(other) ⇒ Boolean Also known as: eql?

Returns:

  • (Boolean)

See Also:

  • Object#==

75
76
77
 
# File 'lib/aixm/d.rb', line 75

def ==(other)
  self.class === other  && (self <=> other).zero?
end

#hash ⇒ Integer

Returns:

  • (Integer)

See Also:

  • Object#hash

82
83
84
 
# File 'lib/aixm/d.rb', line 82

def hash
  to_s.hash
end

#inspect ⇒ String

Returns:

  • (String) 

35
36
37
 
# File 'lib/aixm/d.rb', line 35

def inspect
  %Q(#<#{self.class} #{to_s}>)
end

#to_ft ⇒ AIXM::D

Returns convert distance.

Returns:


60
61
62
63
64
65
 
# File 'lib/aixm/d.rb', line 60

UNITS.each_key do |target_unit|
  define_method "to_#{target_unit}" do
    return self if unit == target_unit
    self.class.new((dist * UNITS[unit][target_unit]).round(8), target_unit)
  end
end

#to_km ⇒ AIXM::D

Returns convert distance.

Returns:


60
61
62
63
64
65
 
# File 'lib/aixm/d.rb', line 60

UNITS.each_key do |target_unit|
  define_method "to_#{target_unit}" do
    return self if unit == target_unit
    self.class.new((dist * UNITS[unit][target_unit]).round(8), target_unit)
  end
end

#to_m ⇒ AIXM::D

Returns convert distance.

Returns:


60
61
62
63
64
65
 
# File 'lib/aixm/d.rb', line 60

UNITS.each_key do |target_unit|
  define_method "to_#{target_unit}" do
    return self if unit == target_unit
    self.class.new((dist * UNITS[unit][target_unit]).round(8), target_unit)
  end
end

#to_nm ⇒ AIXM::D

Returns convert distance.

Returns:


60
61
62
63
64
65
 
# File 'lib/aixm/d.rb', line 60

UNITS.each_key do |target_unit|
  define_method "to_#{target_unit}" do
    return self if unit == target_unit
    self.class.new((dist * UNITS[unit][target_unit]).round(8), target_unit)
  end
end

#to_s ⇒ String

Returns human readable representation (e.g. “123 m”).

Returns:

  • (String) —

    human readable representation (e.g. “123 m”)


40
41
42
 
# File 'lib/aixm/d.rb', line 40

def to_s
  [dist, unit].join(' ')
end

#zero? ⇒ Boolean

Returns whether distance is zero.

Returns:

  • (Boolean) —

    whether distance is zero


22
 
# File 'lib/aixm/d.rb', line 22

def_delegator :@dist, :zero?