class PDF::Reader::Rectangle

def self.from_array(arr)
  if arr.size != 4
    raise ArgumentError, "Only 4-element Arrays can be converted to a Rectangle"
  end
  PDF::Reader::Rectangle.new(
    arr[0].to_f,
    arr[1].to_f,
    arr[2].to_f,
    arr[3].to_f,
  )
end