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## Kernel::Orientation_3

A model for this must provide:

Orientation |
fo.operator() ( | Kernel::Point_3 p, Kernel::Point_3 q, Kernel::Point_3 r, Kernel::Point_3 s)
|  | returns POSITIVE, if s lies on the positive side of the oriented plane h defined by p, q, and r, returns NEGATIVE if s lies on the negative side of h, and returns COPLANAR if s lies on h.

### Refines

AdaptableFunctor (with four arguments)

### See Also

CGAL::orientation

Next: Kernel::OrientedSide_2

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The CGAL Project . Tue, December 21, 2004 .