Method: Proj::Unit.list

Defined in:
lib/unit.rb

.list ⇒ Object 



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

def self.list
  # First get linear units
  pointer_to_array = FFI::Pointer.new(Api::PJ_UNITS, Api.proj_list_units)
  result = Array.new
  0.step do |i|
    ellipse_info = Api::PJ_UNITS.new(pointer_to_array[i])
    break if ellipse_info[:id].nil?
    result << self.new(ellipse_info[:id], ellipse_info[:to_meter], ellipse_info[:factor], ellipse_info[:name])
  end

  # Now get angular linear units
  if Api.method_defined?(:proj_list_angular_units)
    pointer_to_array = FFI::Pointer.new(Api::PJ_UNITS, Api.proj_list_angular_units)
    0.step do |i|
      ellipse_info = Api::PJ_UNITS.new(pointer_to_array[i])
      break result if ellipse_info[:id].nil?
      result << self.new(ellipse_info[:id], ellipse_info[:to_meter], ellipse_info[:factor], ellipse_info[:name])
    end
  end
  result
end