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/* This file is part of the Gudhi Library - https://gudhi.inria.fr/ - which is released under MIT.
* See file LICENSE or go to https://gudhi.inria.fr/licensing/ for full license details.
* Author(s): Mathieu Carrière
*
* Copyright (C) 2017 Inria
*
* Modification(s):
* - YYYY/MM Author: Description of the modification
*/
#include <gudhi/GIC.h>
#include <string>
#include <vector>
void usage(int nbArgs, char *const progName) {
std::cerr << "Error: Number of arguments (" << nbArgs << ") is not correct\n";
std::cerr << "Usage: " << progName << " filename.off N [-v] \n";
std::cerr << " i.e.: " << progName << " ../../data/points/human.off 100 -v \n";
exit(-1); // ----- >>
}
int main(int argc, char **argv) {
if ((argc != 3) && (argc != 4)) usage(argc, argv[0]);
using Point = std::vector<float>;
std::string off_file_name(argv[1]);
int m = atoi(argv[2]);
bool verb = 0;
if (argc == 4) verb = 1;
// ----------------------------------------------------------------------------
// Init of a graph induced complex from an OFF file
// ----------------------------------------------------------------------------
Gudhi::cover_complex::Cover_complex<Point> GIC;
GIC.set_verbose(verb);
bool check = GIC.read_point_cloud(off_file_name);
if (!check) {
std::clog << "Incorrect OFF file." << std::endl;
} else {
GIC.set_type("GIC");
GIC.set_color_from_coordinate();
GIC.set_graph_from_OFF();
GIC.set_cover_from_Voronoi(Gudhi::Euclidean_distance(), m);
GIC.find_simplices();
GIC.plot_OFF();
Gudhi::Simplex_tree<> stree;
GIC.create_complex(stree);
// ----------------------------------------------------------------------------
// Display information about the graph induced complex
// ----------------------------------------------------------------------------
if (verb) {
std::clog << "Graph induced complex is of dimension " << stree.dimension() << " - " << stree.num_simplices()
<< " simplices - " << stree.num_vertices() << " vertices." << std::endl;
std::clog << "Iterator on graph induced complex simplices" << std::endl;
for (auto f_simplex : stree.filtration_simplex_range()) {
for (auto vertex : stree.simplex_vertex_range(f_simplex)) {
std::clog << vertex << " ";
}
std::clog << std::endl;
}
}
}
return 0;
}
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