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example_CGAL_3D_points_off_reader.cpp

# Alpha_complex

#include <gudhi/Points_3D_off_io.h>
#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>
#include <iostream>
#include <string>
#include <vector>
using Kernel = CGAL::Exact_predicates_inexact_constructions_kernel;
using Point_3 = Kernel::Point_3;
void usage(char * const progName) {
std::cerr << "Usage: " << progName << " inputFile.off" << std::endl;
exit(-1);
}
int main(int argc, char **argv) {
if (argc != 2) {
std::cerr << "Error: Number of arguments (" << argc << ") is not correct" << std::endl;
usage(argv[0]);
}
std::string off_input_file(argv[1]);
// Read the OFF file (input file name given as parameter) and triangulate points
Gudhi::Points_3D_off_reader<Point_3> off_reader(off_input_file);
// Check the read operation was correct
if (!off_reader.is_valid()) {
std::cerr << "Unable to read file " << off_input_file << std::endl;
usage(argv[0]);
}
// Retrieve the triangulation
std::vector<Point_3> point_cloud = off_reader.get_point_cloud();
int n {};
for (auto point : point_cloud) {
++n;
std::clog << "Point[" << n << "] = (" << point[0] << ", " << point[1] << ", " << point[2] << ")\n";
}
return 0;
}
Gudhi::Points_3D_off_reader
Definition Points_3D_off_io.h:140