CLOCKWISE = -2

COUNTER_CLOCKWISE = 2

CPLIB_GEOMETRY_CCW = 1

ON_SEGMENT = 0

ONLINE_BACK = 1

ONLINE_FRONT = -1

proc ccw[T](l: Line[T]; p: Point[T]; strict: bool = false): int

proc ccw[T](p1, p2, p3: Point[T]; strict: bool = false): int

proc online[T](l: Line[T]; p: Point[T]): bool

proc online[T](p1, p2, p3: Point[T]): bool