cgal/Kernel_23/doc_tex/Kernel_23_ref/ORIGIN_const.tex

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\begin{ccRefConstant}{ORIGIN}
\ccGlobalVariable{const Origin ORIGIN;}
\ccDefinition
A symbolic constant which denotes the point at the origin.
This constant is used in the conversion between points and vectors.
\ccExample
\begin{cprog}
Point_2< Cartesian<Exact_NT> > p(1.0, 1.0), q;
Vector2< Cartesian<Exact_NT> > v;
v = p - ORIGIN;
q = ORIGIN + v;
assert( p == q );
\end{cprog}
\ccSeeAlso
\ccRefIdfierPage{CGAL::Point_2<Kernel>} \\
\ccRefIdfierPage{CGAL::Point_3<Kernel>} \\
\end{ccRefConstant}