sig
val pnt : float -> AGeom.Point3d.t * AGeom.Point3d.t -> AGeom.Point3d.t
val drv : float -> AGeom.Point3d.t * AGeom.Point3d.t -> AGeom.Vector3d.t
val rand :
AGeom.Point3d.t -> AGeom.Point3d.t -> AGeom.Point3d.t * AGeom.Point3d.t
val srand :
Random.State.t ->
AGeom.Point3d.t -> AGeom.Point3d.t -> AGeom.Point3d.t * AGeom.Point3d.t
end