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CGAL 4.8.2 - 2D and 3D Linear Geometry Kernel
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Kernel::ConstructVector_2 Concept Reference



A model of this concept must provide:

Kernel::Vector_2 operator() (const Kernel::Point_2 &a, const Kernel::Point_2 &b)
 introduces the vector b-a.
Kernel::Vector_2 operator() (const Origin &o, const Kernel::Point_2 &b)
 introduces the vector b.
Kernel::Vector_2 operator() (const Kernel::Point_2 &a, const Origin &o)
 introduces the vector -a.
Kernel::Vector_2 operator() (const Kernel::Segment_2 &s)
 introduces the vector s.target()-s.source().
Kernel::Vector_2 operator() (const Kernel::Ray_2 &r)
 introduces a vector having the same direction as r.
Kernel::Vector_2 operator() (const Kernel::Line_2 &l)
 introduces a vector having the same direction as l.
Kernel::Vector_2 operator() (const Null_vector &NULL_VECTOR)
 introduces a null vector .