module type PRINTER = sig

  type 'a t

  val create: unit -> 'a t

  (* Start a new path. *)
  val move_to: Gg.v2 -> 'a t -> 'a t

  val line_to: Gg.v2 -> 'a t -> 'a t

  (** [quadratic_to ctrl0 ctrl1 p1] ctreate a quadratic curve from the current
      point to [p1], with control points [ctrl0] and [ctrl1] *)
  val quadratic_to: Gg.v2 -> Gg.v2 -> Gg.v2 -> 'a t -> 'a t

  (** Request for the path to be closed *)
  val close: 'a t -> 'a t

end