summaryrefslogtreecommitdiff
path: root/GudhUI/model/Model.h
diff options
context:
space:
mode:
Diffstat (limited to 'GudhUI/model/Model.h')
-rw-r--r--GudhUI/model/Model.h355
1 files changed, 0 insertions, 355 deletions
diff --git a/GudhUI/model/Model.h b/GudhUI/model/Model.h
deleted file mode 100644
index 1d5cc087..00000000
--- a/GudhUI/model/Model.h
+++ /dev/null
@@ -1,355 +0,0 @@
-/* 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): David Salinas
- *
- * Copyright (C) 2014 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 MODEL_MODEL_H_
-#define MODEL_MODEL_H_
-
-#include <gudhi/Clock.h>
-#include <gudhi/Skeleton_blocker/Skeleton_blocker_simple_geometric_traits.h>
-#include <gudhi/Skeleton_blocker_geometric_complex.h>
-#include <gudhi/Off_reader.h>
-
-#include <CGAL/Euclidean_distance.h>
-
-#include <fstream>
-#include <limits>
-#include <string>
-#include <vector>
-
-#include "utils/UI_utils.h"
-#include "utils/Lloyd_builder.h"
-#include "utils/Rips_builder.h"
-#include "utils/K_nearest_builder.h"
-#include "utils/Vertex_collapsor.h"
-#include "utils/Edge_collapsor.h"
-#include "utils/Edge_contractor.h"
-#include "utils/Persistence_compute.h"
-#include "utils/Critical_points.h"
-#include "utils/Is_manifold.h"
-
-#include "Complex_typedefs.h"
-
-template<typename Complex>
-class CGAL_geometric_flag_complex_wrapper {
- Complex& complex_;
- typedef typename Complex::Vertex_handle Vertex_handle;
- typedef typename Complex::Point Point;
-
- const bool load_only_points_;
-
- public:
- CGAL_geometric_flag_complex_wrapper(Complex& complex, bool load_only_points = false) :
- complex_(complex),
- load_only_points_(load_only_points) { }
-
- void init(int dim, int num_vertices, int num_max_faces, int num_edges) const { }
-
- void point(const std::vector<double>& coords) {
- Point p(coords.size(), coords.begin(), coords.end());
- complex_.add_vertex(p);
- }
-
- void maximal_face(std::vector<int> vertices) {
- if (!load_only_points_) {
- // std::cout << "size:" << vertices.size() << std::endl;
- for (std::size_t i = 0; i < vertices.size(); ++i)
- for (std::size_t j = i + 1; j < vertices.size(); ++j)
- complex_.add_edge_without_blockers(Vertex_handle(vertices[i]), Vertex_handle(vertices[j]));
- }
- }
-
- void done() const { }
-};
-
-class Model {
- public:
- Complex complex_;
- typedef Complex::Vertex_handle Vertex_handle;
-
- Model() : complex_() { }
-
- public:
- void off_file_open(const std::string& name_file) {
- UIDBGMSG("load off file", name_file);
- complex_.clear();
- CGAL_geometric_flag_complex_wrapper<Complex> read_wraper(complex_, false);
- Gudhi::read_off(name_file, read_wraper);
- }
-
- void off_points_open(const std::string& name_file) {
- UIDBGMSG("load off points", name_file);
- complex_.clear();
- CGAL_geometric_flag_complex_wrapper<Complex> read_wraper(complex_, true);
- Gudhi::read_off(name_file, read_wraper);
- }
-
- void off_file_save(const std::string& name_file) {
- UIDBG("save off file");
- UIDBG("save off off_points_save");
- std::ofstream file(name_file);
- if (file.is_open()) {
- file << "OFF\n";
- file << complex_.num_vertices() << " " << complex_.num_edges() << " 0\n";
- for (auto v : complex_.vertex_range()) {
- const auto& pt(complex_.point(v));
- for (auto it = pt.cartesian_begin(); it != pt.cartesian_end(); ++it)
- file << *it << " ";
- file << std::endl;
- }
- for (auto e : complex_.edge_range())
- file << "2 " << complex_.first_vertex(e) << " " << complex_.second_vertex(e) << "\n";
- file.close();
- } else {
- std::cerr << "Could not open file " << name_file << std::endl;
- }
- }
-
- void off_points_save(const std::string& name_file) {
- UIDBG("save off off_points_save");
- std::ofstream file(name_file);
- if (file.is_open()) {
- file << "OFF\n";
- file << complex_.num_vertices() << " 0 0\n";
- for (auto v : complex_.vertex_range()) {
- const auto& pt(complex_.point(v));
- for (auto it = pt.cartesian_begin(); it != pt.cartesian_end(); ++it)
- file << *it << " ";
- file << std::endl;
- }
- file.close();
- } else {
- std::cerr << "Could not open file " << name_file << std::endl;
- }
- }
-
- // point sets operations
- void uniform_noise(double amplitude) {
- UIDBG("unif noise");
- for (auto v : complex_.vertex_range())
- complex_.point(v) = add_uniform_noise(complex_.point(v), amplitude);
- }
-
- private:
- Point add_uniform_noise(const Point& point, double amplitude) {
- std::vector<double> new_point(point.dimension());
- for (int i = 0; i < point.dimension(); ++i) {
- new_point[i] = point[i] + (rand() % 2 - .5) * amplitude;
- }
- return Point(point.dimension(), new_point.begin(), new_point.end());
- }
-
- public:
- void lloyd(int num_iterations, int num_closest_neighbors) {
- UIDBG("lloyd");
- Lloyd_builder<Complex> lloyd_builder(complex_, 1);
- }
-
- double squared_eucl_distance(const Point& p1, const Point& p2) const {
- return Geometry_trait::Squared_distance_d()(p1, p2);
- }
-
- // complex operations from points
-
- void build_rips(double alpha) {
- UIDBG("build_rips");
- Rips_builder<Complex> rips_builder(complex_, alpha);
- }
-
- void build_k_nearest_neighbors(unsigned k) {
- UIDBG("build_k_nearest");
- complex_.keep_only_vertices();
- K_nearest_builder<Complex> k_nearest_builder(complex_, k);
- }
-
- void build_delaunay() {
- UIDBG("build_delaunay");
- complex_.keep_only_vertices();
- }
-
- void contract_edges(unsigned num_contractions) {
- Gudhi::Clock c;
- Edge_contractor<Complex> contractor(complex_, num_contractions);
- std::cout << "Time to simplify: " << c.num_seconds() << "s" << std::endl;
- }
-
- void collapse_vertices(unsigned num_collapses) {
- auto old_num_vertices = complex_.num_vertices();
- Vertex_collapsor<Complex> collapsor(complex_, complex_.num_vertices());
- UIDBGMSG("num vertices collapsed:", old_num_vertices - complex_.num_vertices());
- }
-
- void collapse_edges(unsigned num_collapses) {
- Edge_collapsor<Complex> collapsor(complex_, num_collapses);
- }
-
- void show_graph_stats() {
- std::cout << "++++++ Graph stats +++++++" << std::endl;
- std::cout << "Num vertices : " << complex_.num_vertices() << std::endl;
- std::cout << "Num edges : " << complex_.num_edges() << std::endl;
- std::cout << "Num connected components : " << complex_.num_connected_components() << std::endl;
- std::cout << "Min/avg/max degree : " << min_degree() << "/" << avg_degree() << "/" << max_degree() << std::endl;
- std::cout << "Num connected components : " << complex_.num_connected_components() << std::endl;
- std::cout << "Num connected components : " << complex_.num_connected_components() << std::endl;
- std::cout << "+++++++++++++++++++++++++" << std::endl;
- }
-
- private:
- int min_degree() const {
- int res = (std::numeric_limits<int>::max)();
- for (auto v : complex_.vertex_range())
- res = (std::min)(res, complex_.degree(v));
- return res;
- }
-
- int max_degree() const {
- int res = 0;
- for (auto v : complex_.vertex_range())
- res = (std::max)(res, complex_.degree(v));
- return res;
- }
-
- int avg_degree() const {
- int res = 0;
- for (auto v : complex_.vertex_range())
- res += complex_.degree(v);
- return res / complex_.num_vertices();
- }
-
- public:
- void show_complex_stats() {
- std::cout << "++++++ Mesh stats +++++++" << std::endl;
- std::cout << "Num vertices : " << complex_.num_vertices() << std::endl;
- std::cout << "Num edges : " << complex_.num_edges() << std::endl;
- std::cout << "Num connected components : " << complex_.num_connected_components() << std::endl;
- std::cout << "+++++++++++++++++++++++++" << std::endl;
- }
-
- void show_complex_dimension() {
- unsigned num_simplices = 0;
- int euler = 0;
- int dimension = 0;
- Gudhi::Clock clock;
- for (const auto &s : complex_.complex_simplex_range()) {
- num_simplices++;
- dimension = (std::max)(s.dimension(), dimension);
- if (s.dimension() % 2 == 0)
- euler += 1;
- else
- euler -= 1;
- }
- clock.end();
- std::cout << "++++++ Mesh dimension +++++++" << std::endl;
- std::cout << "Dimension : " << dimension << std::endl;
- std::cout << "Euler characteristic : " << euler << std::endl;
- std::cout << "Num simplices : " << num_simplices << std::endl;
- std::cout << "Total time: " << clock << std::endl;
- std::cout << "Time per simplex: " << clock.num_seconds() / num_simplices << " s" << std::endl;
- std::cout << "+++++++++++++++++++++++++" << std::endl;
- }
-
- void show_homology_group() {
-#ifdef _WIN32
- std::cout << "Works only on linux x64 for the moment\n";
-#else
- Gudhi::Clock clock;
- run_chomp();
- clock.end();
-#endif
- }
-
- void show_euler_characteristic() {
- unsigned num_simplices = 0;
- int euler = 0;
- int dimension = 0;
- for (const auto &s : complex_.complex_simplex_range()) {
- num_simplices++;
- dimension = (std::max)(s.dimension(), dimension);
- if (s.dimension() % 2 == 0)
- euler += 1;
- else
- euler -= 1;
- }
- std::cout << "Saw " << num_simplices << " simplices with maximum dimension " << dimension << std::endl;
- std::cout << "The euler characteristic is : " << euler << std::endl;
- }
-
- void show_persistence(int p, double threshold, int max_dim, double min_pers) {
- Persistence_compute<Complex> persistence(complex_, std::cout, Persistence_params(p, threshold, max_dim, min_pers));
- }
-
- void show_critical_points(double max_distance) {
- Critical_points<Complex> critical_points(complex_, std::cout, max_distance);
- }
-
- void show_is_manifold() {
- unsigned dim;
- bool is_manifold;
- Is_manifold<Complex> test_manifold(complex_, dim, is_manifold);
-
- if (is_manifold) {
- std::cout << "The complex is a " << dim << "-manifold\n";
- } else {
- if (dim < 4) {
- std::cout << "The complex has dimension greater than " << dim << " and is not a manifold\n";
- } else {
- std::cout << "The complex has dimension>=4 and may or may not be a manifold\n";
- }
- }
- }
-
- private:
- void run_chomp() {
- save_complex_in_file_for_chomp();
- std::cout << "Call CHOMP library\n";
- int returnValue = system("utils/homsimpl chomp.sim");
- std::cout << "CHOMP returns" << returnValue << std::endl;
- }
-
- void save_complex_in_file_for_chomp() {
- std::ofstream file;
- file.open("chomp.sim");
- for (const auto &s : complex_.complex_simplex_range()) {
- bool first = true;
- file << "(";
- for (auto x : s) {
- if (first)
- first = false;
- else
- file << ",";
- file << x;
- }
- file << ")\n";
- }
- }
-
- public:
- unsigned num_vertices() const {
- return complex_.num_vertices();
- }
-
- unsigned num_edges() const {
- return complex_.num_edges();
- }
-};
-
-#endif // MODEL_MODEL_H_