    g.Polyline(points)

Return a new polyline object with points given by the `points` array.

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.

If `points` are not provided, an empty Polyline is created.

Also accepts a polyline SVG string as an argument; then the `g.Polyline.parse()` function is used to generate points for the polyline.