CGAL 6.0.2 - Manual

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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;
}
CGAL::Exact_predicates_exact_constructions_kernel
Kernel::Point_2
CGAL::collinear
bool collinear(const CGAL::Point_2< Kernel > &p, const CGAL::Point_2< Kernel > &q, const CGAL::Point_2< Kernel > &r)
CGAL::midpoint
CGAL::Point_2< Kernel > midpoint(const CGAL::Point_2< Kernel > &p, const CGAL::Point_2< Kernel > &q)
Kernel