operator-

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CGAL::operator-

Vector_2<Kernel>	operator- ( Point_2<Kernel> p, Point_2<Kernel> q)
		returns the difference vector between q and p. You can substitute ORIGIN for either p or q ,but not for both.

Point_2<Kernel>	operator- ( Point_2<Kernel> p, Vector_2<Kernel> v)
		returns the point obtained by translating p by the vector -v.

Vector_3<Kernel>	operator- ( Point_3<Kernel> p, Point_3<Kernel> q)
		returns the difference vector between q and p. You can substitute ORIGIN for either p or q, but not both.

Point_3<Kernel>	operator- ( Point_3<Kernel> p, Vector_3<Kernel> v)
		returns a point obtained by translating p by the vector -v.