#include <gudhi/Alpha_complex.h>
#include <gudhi/Simplex_tree.h>
#include <CGAL/Epick_d.h>
#include <iostream>
#include <string>
#include <vector>
#include <limits>
using Kernel = CGAL::Epick_d< CGAL::Dimension_tag<2> >;
using Point = Kernel::Point_d;
using Vector_of_points = std::vector<Point>;
void usage(int nbArgs, char * const progName) {
std::cerr << "Error: Number of arguments (" << nbArgs << ") is not correct\n";
std::cerr << "Usage: " << progName << " [alpha_square_max_value]\n";
std::cerr << " i.e.: " << progName << " 60.0\n";
exit(-1);
}
int main(int argc, char **argv) {
if ((argc != 1) && (argc != 2)) usage(argc, (argv[0] - 1));
double alpha_square_max_value {std::numeric_limits<double>::infinity()};
if (argc == 2)
alpha_square_max_value = atof(argv[1]);
Vector_of_points points;
points.push_back(Point(1.0, 1.0));
points.push_back(Point(7.0, 0.0));
points.push_back(Point(4.0, 6.0));
points.push_back(Point(9.0, 6.0));
points.push_back(Point(0.0, 14.0));
points.push_back(Point(2.0, 19.0));
points.push_back(Point(9.0, 17.0));
if (alpha_complex_from_points.
create_complex(simplex, alpha_square_max_value)) {
std::cout <<
"Alpha complex is of dimension " << simplex.
dimension() <<
std::cout << "Iterator on alpha complex simplices in the filtration order, with [filtration value]:" << std::endl;
std::cout << " ( ";
std::cout << vertex << " ";
}
std::cout <<
") -> " <<
"[" << simplex.
filtration(f_simplex) <<
"] ";
std::cout << std::endl;
}
}
return 0;
}