\begin{ccRefFunction}{do_intersect}
\ccInclude{CGAL/intersections.h}

\ccUnchecked{
\ccFunction{bool do_intersect(Type1<Kernel> obj1, Type2<Kernel> obj2);}
{checks whether \ccc{obj1} and \ccc{obj2} intersect.
Two objects \ccStyle{obj1} and \ccStyle{obj2} intersect if there is a point
\ccStyle{p} that is part of both \ccStyle{obj1} and \ccStyle{obj2}.
The \ccHtmlNoLinksFrom{intersection} region of those two objects is defined as the set of all
points \ccStyle{p} that are part of both \ccStyle{obj1} and \ccStyle{obj2}.
Note that for objects like triangles and polygons that enclose a
bounded region, this region is part of the object.
}}

The types \ccStyle{Type1} and \ccStyle{Type2} can be any of the following:
\begin{itemize}\ccTexHtml{\itemsep0pt\topsep0pt\partopsep0pt\parskip0pt\parsep0pt}{}
\item \ccStyle{Point_2<Kernel>}
\item \ccStyle{Line_2<Kernel>}
\item \ccStyle{Ray_2<Kernel>}
\item \ccStyle{Segment_2<Kernel>}
\item \ccStyle{Triangle_2<Kernel>}
\item \ccStyle{Iso_rectangle_2<Kernel>}
\end{itemize}

In three-dimensional space, \ccc{Type1} can be \ccc{Plane_3<Kernel>} or
\ccc{Triangle_3<Kernel>} and \ccc{Type2} any of 
\begin{itemize}\ccTexHtml{\itemsep0pt\topsep0pt\partopsep0pt\parskip0pt\parsep0pt}{}
\item \ccStyle{Plane_3<Kernel>}
\item \ccStyle{Line_3<Kernel>}
\item \ccStyle{Ray_3<Kernel>}
\item \ccStyle{Segment_3<Kernel>}
\item \ccStyle{Triangle_3<Kernel>}
\end{itemize}
Also, \ccc{Type1} and \ccc{Type2} can be respectively of types
\begin{itemize}\ccTexHtml{\itemsep0pt\topsep0pt\partopsep0pt\parskip0pt\parsep0pt}{}
\item \ccStyle{Triangle_3<Kernel>} and \ccStyle{Tetrahedron_3<Kernel>}
\item \ccStyle{Line_3<Kernel>} and \ccStyle{Line_3<Kernel>}
\item \ccStyle{Plane_3<Kernel>} and \ccStyle{Sphere_3<Kernel>} (or the contrary)
\item \ccStyle{Sphere_3<Kernel>} and \ccStyle{Sphere_3<Kernel>}.
\end{itemize} 

\ccSeeAlso
\ccRefIdfierPage{CGAL::intersection}

\end{ccRefFunction}
