\( \newcommand{\E}{\mathrm{E}} \) \( \newcommand{\A}{\mathrm{A}} \) \( \newcommand{\R}{\mathrm{R}} \) \( \newcommand{\N}{\mathrm{N}} \) \( \newcommand{\Q}{\mathrm{Q}} \) \( \newcommand{\Z}{\mathrm{Z}} \) \( \def\ccSum #1#2#3{ \sum_{#1}^{#2}{#3} } \def\ccProd #1#2#3{ \sum_{#1}^{#2}{#3} }\)
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Kernel_23/exact.cpp
#include <iostream>
#include <CGAL/Exact_predicates_exact_constructions_kernel.h>
#include <sstream>
typedef
CGAL::Exact_predicates_exact_constructions_kernel
Kernel
;
typedef
Kernel::Point_2
Point_2
;
int
main()
{
Point_2
p(0, 0.3), q, r(2, 0.9);
{
q =
Point_2
(1, 0.6);
std::cout << (
CGAL::collinear
(p,q,r) ?
"collinear\n"
:
"not collinear\n"
);
}
{
std::istringstream input(
"0 0.3 1 0.6 2 0.9"
);
input >> p >> q >> r;
std::cout << (
CGAL::collinear
(p,q,r) ?
"collinear\n"
:
"not collinear\n"
);
}
{
q =
CGAL::midpoint
(p,r);
std::cout << (
CGAL::collinear
(p,q,r) ?
"collinear\n"
:
"not collinear\n"
);
}
return
0;
}