1 files changed, 8 insertions, 1 deletions
diff --git a/path/fixed.mli b/path/fixed.mli
index 1f12006..06b3539 100755
--- a/path/fixed.mli
+++ b/path/fixed.mli
@@ -32,10 +32,17 @@ module Make(Point:P) : sig
   val repr
     : t -> (module Repr.M with type t = Point.t and type repr = 's) -> 's -> 's
 
+  type approx =
+    { distance : float
+    ; closest_point : Gg.v2
+    ; ratio : float
+    ; p0 : Point.t
+    ; p1 : Point.t }
+
   (** Return the distance between a given point and the curve. May return
       None if the point is out of the curve *)
   val distance
-    : Gg.v2 -> t -> (Gg.v2 * float * Point.t * Point.t) option
+    : Gg.v2 -> t -> approx option
 
   val iter
     : t -> f:(Point.t -> unit) -> unit