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## Kernel::ConstructPerpendicularDirection_2

A model for this must provide:

Kernel::Direction_2
fo.operator() ( | Kernel::Direction_2 d, Orientation o)
|  | introduces a direction orthogonal to d. If o is CLOCKWISE, d is rotated clockwise; if o is COUNTERCLOCKWISE, d is rotated counterclockwise. Precondition: o is not COLLINEAR.

### Refines

AdaptableFunctor (with two arguments)

### See Also

CGAL::Direction_2<Kernel>

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The CGAL Project . Tue, December 21, 2004 .