sig
val interval : int * int
val pnt :
IntAGeom.Point3d.t * IntAGeom.Point3d.t -> int -> IntAGeom.Point3d.t
val drv :
IntAGeom.Point3d.t * IntAGeom.Point3d.t -> int -> IntAGeom.Vector3d.t
val rand :
IntAGeom.Point3d.t ->
IntAGeom.Point3d.t -> IntAGeom.Point3d.t * IntAGeom.Point3d.t
end