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## Kernel::ConstructBaseVector_3

A model for this must provide:

Kernel::Vector_3 | fo.operator() ( Kernel::Plane_3 h, int index)
|  | when index == 1, returns a vector b1 that is orthogonal to the normal n to plane h; when index == 2, retrns a vector b2 that is orthogonal to n and b1 and such that for an arbitrary point p on the plane h, the orientation of p, p + b1, p + b2, and p + n is positive.

### Refines

AdaptableFunctor (with two arguments)

### See Also

CGAL::Plane_3<Kernel>

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The CGAL Project . Tue, December 21, 2004 .