Class: Proj::PrimeMeridian

Inherits:
Object
  • Object
show all
Defined in:
lib/prime_meridian.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(id, defn) ⇒ PrimeMeridian

Returns a new instance of PrimeMeridian.



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# File 'lib/prime_meridian.rb', line 19

def initialize(id, defn)
  @id = id
  @defn = defn
end

Instance Attribute Details

#defn ⇒ Object (readonly)

Returns the value of attribute defn.



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# File 'lib/prime_meridian.rb', line 3

def defn
  @defn
end

#id ⇒ Object (readonly)

Returns the value of attribute id.



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# File 'lib/prime_meridian.rb', line 3

def id
  @id
end

Class Method Details

.get(id) ⇒ Object 



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# File 'lib/prime_meridian.rb', line 15

def self.get(id)
  self.list.find {|ellipsoid| ellipsoid.id == id}
end

.list ⇒ Object 



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# File 'lib/prime_meridian.rb', line 5

def self.list
  pointer_to_array = FFI::Pointer.new(Api::PJ_PRIME_MERIDIANS, Api.proj_list_prime_meridians)
  result = Array.new
  0.step do |i|
    prime_meridian_info = Api::PJ_PRIME_MERIDIANS.new(pointer_to_array[i])
    break result if prime_meridian_info[:id].nil?
    result << self.new(prime_meridian_info[:id], prime_meridian_info[:defn])
  end
end

Instance Method Details

#<=>(other) ⇒ Object 



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# File 'lib/prime_meridian.rb', line 24

def <=>(other)
  self.id <=> other.id
end

#==(other) ⇒ Object 



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# File 'lib/prime_meridian.rb', line 28

def ==(other)
  self.id == other.id
end

#inspect ⇒ Object 



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# File 'lib/prime_meridian.rb', line 36

def inspect
  "#<#{self.class} id=\"#{id}\", defn=\"#{defn}\">"
end

#to_s ⇒ Object 



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# File 'lib/prime_meridian.rb', line 32

def to_s
  self.id
end