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## Kernel::HasOn_2

A model for this must provide:

bool | fo.operator() ( Kernel::Line_2 l, Kernel::Point_2 p)
|  | returns true iff p lies on l.
bool | fo.operator() ( Kernel::Ray_2 r, Kernel::Point_2 p)
|  | returns true iff p lies on r.
bool |
fo.operator() ( | Kernel::Segment_2 s, Kernel::Point_2 p)
|  | returns true iff p lies on s.

### Refines

AdaptableFunctor (with two arguments)

### See Also

CGAL::Line_2<Kernel>
CGAL::Ray_2<Kernel>
CGAL::Segment_2<Kernel>

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The CGAL Project . Tue, December 21, 2004 .