CGAL 6.1.1 - Cone-Based Spanners

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Cone_spanners_2/compute_cones.cpp
#include <cstdlib>
#include <iostream>
#include <iterator>
#include <vector>
#include <CGAL/Exact_predicates_exact_constructions_kernel_with_root_of.h>
#include <CGAL/Compute_cone_boundaries_2.h>
// select the kernel type
typedef CGAL::Exact_predicates_exact_constructions_kernel_with_root_of Kernel;
typedef Kernel::Point_2 Point_2;
typedef Kernel::Direction_2 Direction_2;
int main(int argc, char ** argv) {
unsigned int k = argc < 2 ? 6 : atoi(argv[1]);
if (argc < 2) {
std::cout << "Usage: " << argv[0] << " <no. of cones> [<direction-x> <direction-y>]" << std::endl;
std::cout << "Using default value " << k << "\n";
}
if (k<2) {
std::cout << "The number of cones should be larger than 1!" << std::endl;
return 1;
}
Direction_2 initial_direction;
if (argc <= 2)
initial_direction = Direction_2(1, 0); // default initial_direction
else if (argc == 4)
initial_direction = Direction_2(atof(argv[2]), atof(argv[3]));
else {
std::cout << "Usage: " << argv[0] << " <no. of cones> [<direction-x> <direction-y>]" << std::endl;
return 1;
}
// construct the functor
CGAL::Compute_cone_boundaries_2<Kernel> cones;
// create the vector rays to store the results
std::vector<Direction_2> rays(k);
// compute the cone boundaries and store them in rays
cones(k, initial_direction, rays.begin());
// display the computed rays, starting from the initial direction, ccw order
for (unsigned int i=0; i<k; i++)
std::cout << "Ray " << i << ": " << rays[i] << std::endl;
return 0;
}
CGAL::Compute_cone_boundaries_2
The functor for computing the directions of cone boundaries with a given cone number and a given init...
Definition: Compute_cone_boundaries_2.h:60
CGAL::Exact_predicates_exact_constructions_kernel_with_root_of
Kernel::Direction_2
Kernel::Point_2
Kernel