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/* This file is part of the Gudhi Library. The Gudhi library
* (Geometric Understanding in Higher Dimensions) is a generic C++
* library for computational topology.
*
* Author(s): Vincent Rouvreau
*
* Copyright (C) 2016 INRIA
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
#ifndef INCLUDE_TANGENTIAL_COMPLEX_INTERFACE_H_
#define INCLUDE_TANGENTIAL_COMPLEX_INTERFACE_H_
#include <gudhi/Simplex_tree.h>
#include <gudhi/Tangential_complex.h>
#include <gudhi/Points_off_io.h>
#include <CGAL/Epick_d.h>
#include "Simplex_tree_interface.h"
#include <vector>
#include <utility> // std::pair
#include <iostream>
#include <string>
namespace Gudhi {
namespace tangential_complex {
class Tangential_complex_interface {
using Dynamic_kernel = CGAL::Epick_d< CGAL::Dynamic_dimension_tag >;
using Point_d = Dynamic_kernel::Point_d;
using TC = Tangential_complex<Dynamic_kernel, CGAL::Dynamic_dimension_tag, CGAL::Parallel_tag>;
public:
Tangential_complex_interface(const std::vector<std::vector<double>>& points) {
Dynamic_kernel k;
unsigned intrisic_dim = 0;
if (points.size() > 0)
intrisic_dim = points[0].size() - 1;
tangential_complex_ = new TC(points, intrisic_dim, k);
tangential_complex_->compute_tangential_complex();
num_inconsistencies_ = tangential_complex_->number_of_inconsistent_simplices();
}
Tangential_complex_interface(const std::string& off_file_name, bool from_file = true) {
Gudhi::Points_off_reader<Point_d> off_reader(off_file_name);
Dynamic_kernel k;
unsigned intrisic_dim = 0;
std::vector<Point_d> points = off_reader.get_point_cloud();
if (points.size() > 0)
intrisic_dim = points[0].size() - 1;
tangential_complex_ = new TC(points, intrisic_dim, k);
tangential_complex_->compute_tangential_complex();
num_inconsistencies_ = tangential_complex_->number_of_inconsistent_simplices();
}
~Tangential_complex_interface() {
delete tangential_complex_;
}
std::vector<double> get_point(unsigned vh) {
std::vector<double> vd;
if (vh < tangential_complex_->number_of_vertices()) {
Point_d ph = tangential_complex_->get_point(vh);
for (auto coord = ph.cartesian_begin(); coord < ph.cartesian_end(); coord++)
vd.push_back(*coord);
}
return vd;
}
unsigned number_of_vertices() {
return tangential_complex_->number_of_vertices();
}
unsigned number_of_simplices() {
return num_inconsistencies_.num_simplices;
}
unsigned number_of_inconsistent_simplices() {
return num_inconsistencies_.num_inconsistent_simplices;
}
unsigned number_of_inconsistent_stars() {
return num_inconsistencies_.num_inconsistent_stars;
}
void fix_inconsistencies_using_perturbation(double max_perturb, double time_limit) {
tangential_complex_->fix_inconsistencies_using_perturbation(max_perturb, time_limit);
num_inconsistencies_ = tangential_complex_->number_of_inconsistent_simplices();
}
void create_simplex_tree(Simplex_tree<>* simplex_tree) {
tangential_complex_->create_complex<Gudhi::Simplex_tree<Gudhi::Simplex_tree_options_full_featured>>(*simplex_tree);
simplex_tree->initialize_filtration();
}
private:
TC* tangential_complex_;
TC::Num_inconsistencies num_inconsistencies_;
};
} // namespace tangential_complex
} // namespace Gudhi
#endif // INCLUDE_TANGENTIAL_COMPLEX_INTERFACE_H_
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