    g.polyline([points])

Return a new polyline object with points given by the `points` array. If `points` are not provided or are not an Array, an empty Polyline is created. The array can hold anything that can be understood by the Point constructor; Point objects, objects with `x` and `y` attributes, or strings in one of the two valid formats (`"x y"` or `"x@y"`). Array elements that cannot be understood as Points are replaced by 0,0 points.