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(** Basic Shapes *)
type fpoint = float * float
type winding_rule = EvenOdd | NonZero
type segment =
| Straight of fpoint * fpoint
| Bezier of fpoint * fpoint * fpoint * fpoint
(* Each segment list may be marked as a hole or not. *)
type hole = Hole | Not_hole
(* A [subpath] is either closed or open. *)
type closure = Closed | Open
(* A [subpath] is the pair of a hole and a list of segments. *)
type subpath = hole * closure * segment list
(* A path is made from a number of subpaths. *)
type path = winding_rule * subpath list
(** The factor by which the radius of a circle is multiplied to find the length
of the bezier control lines when approximating quarter arcs to make circles. *)
val kappa : float
(** Calling [restrict_angle s a] restricts an angle [a] to one of those at [s,
2s, 3s...] returning the chosen one. *)
val restrict_angle : float -> float -> float
(** Calling [circle x y r] builds a path representing a circle at [(x, y)] with
radius [r]. *)
val circle : float -> float -> float -> path
(** Calling [rectangle x y w h] builds a path representing a rectangle with top
left [(x, y)], width [w] and height [h]. *)
val rectangle : float -> float -> float -> float -> path
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