## Kernel::Orientation_2

A model for this must provide:

Orientation

fo.operator() ( | Kernel::Point_2 p, Kernel::Point_2 q, Kernel::Point_2 r)

|  | returns LEFT_TURN, if r lies to the left of the oriented line l defined by p and q, returns RIGHT_TURN if r lies to the right of l, and returns COLLINEAR if r lies on l.

### Refines

AdaptableFunctor (with three arguments)

### See Also

CGAL::orientation