blob: 4f3818928a38e4425edc01c3cf93384cf74a41ac (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
|
#include <iostream>
#include <string>
#include <gudhi/Alpha_complex.h>
void usage(char * const progName) {
std::cerr << "Usage: " << progName << " filename.off alpha_square_max_value" << std::endl;
std::cerr << " i.e.: " << progName << " ../../data/points/alphacomplexdoc.off 60.0" << std::endl;
exit(-1); // ----- >>
}
int main(int argc, char **argv) {
if (argc != 3) {
std::cerr << "Error: Number of arguments (" << argc << ") is not correct" << std::endl;
usage(argv[0]);
}
std::string off_file_name(argv[1]);
double alpha_square_max_value = atof(argv[2]);
// ----------------------------------------------------------------------------
// Init of an alpha complex from an OFF file
// ----------------------------------------------------------------------------
typedef CGAL::Epick_d< CGAL::Dynamic_dimension_tag > Kernel;
Gudhi::alphacomplex::Alpha_complex<Kernel> alpha_complex_from_file(off_file_name, alpha_square_max_value);
// ----------------------------------------------------------------------------
// Display information about the alpha complex
// ----------------------------------------------------------------------------
std::cout << "Alpha complex is of dimension " << alpha_complex_from_file.dimension() <<
" - " << alpha_complex_from_file.num_simplices() << " simplices - " <<
alpha_complex_from_file.num_vertices() << " vertices." << std::endl;
std::cout << "Iterator on alpha complex simplices in the filtration order, with [filtration value]:" << std::endl;
for (auto f_simplex : alpha_complex_from_file.filtration_simplex_range()) {
std::cout << " ( ";
for (auto vertex : alpha_complex_from_file.simplex_vertex_range(f_simplex)) {
std::cout << vertex << " ";
}
std::cout << ") -> " << "[" << alpha_complex_from_file.filtration(f_simplex) << "] ";
std::cout << std::endl;
}
return 0;
}
|
