Merge GudhUI, a UI for gudhi based on Qt

git-svn-id: svn+ssh://scm.gforge.inria.fr/svnroot/gudhi/trunk@427 636b058d-ea47-450e-bf9e-a15bfbe3eedb

Former-commit-id: 17fedd974f14a8225b27d94361e835964eeb5cba

18 files changed, 1636 insertions, 0 deletions

diff --git a/src/GudhUI/gui/KNearestNeighborsMenu.ui b/src/GudhUI/gui/KNearestNeighborsMenu.ui
new file mode 100644
index 00000000..472db48b
--- /dev/null
+++ b/src/GudhUI/gui/KNearestNeighborsMenu.ui
@@ -0,0 +1,150 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>KNearestNeighborsMenu</class>
+ <widget class="QDialog" name="KNearestNeighborsMenu">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>298</width>
+    <height>209</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>k-nearest neighbors</string>
+  </property>
+  <widget class="QDialogButtonBox" name="buttonBox">
+   <property name="geometry">
+    <rect>
+     <x>50</x>
+     <y>160</y>
+     <width>171</width>
+     <height>32</height>
+    </rect>
+   </property>
+   <property name="orientation">
+    <enum>Qt::Horizontal</enum>
+   </property>
+   <property name="standardButtons">
+    <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+   </property>
+  </widget>
+  <widget class="QWidget" name="formLayoutWidget">
+   <property name="geometry">
+    <rect>
+     <x>30</x>
+     <y>10</y>
+     <width>229</width>
+     <height>84</height>
+    </rect>
+   </property>
+   <layout class="QFormLayout" name="formLayout_2">
+    <property name="fieldGrowthPolicy">
+     <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
+    </property>
+    <item row="0" column="0">
+     <widget class="QLabel" name="label">
+      <property name="text">
+       <string>k </string>
+      </property>
+     </widget>
+    </item>
+    <item row="0" column="1">
+     <widget class="QSpinBox" name="spinBoxK">
+      <property name="maximum">
+       <number>10000000</number>
+      </property>
+      <property name="value">
+       <number>0</number>
+      </property>
+     </widget>
+    </item>
+    <item row="1" column="0">
+     <widget class="QLabel" name="label_2">
+      <property name="text">
+       <string>Metric</string>
+      </property>
+     </widget>
+    </item>
+    <item row="1" column="1">
+     <widget class="QComboBox" name="comboBoxMetric">
+      <item>
+       <property name="text">
+        <string>Ambient</string>
+       </property>
+      </item>
+      <item>
+       <property name="text">
+        <string>Reduced Space</string>
+       </property>
+      </item>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QWidget" name="gridLayoutWidget">
+   <property name="geometry">
+    <rect>
+     <x>30</x>
+     <y>110</y>
+     <width>250</width>
+     <height>40</height>
+    </rect>
+   </property>
+   <layout class="QGridLayout" name="gridLayout">
+    <item row="0" column="1">
+     <widget class="QPushButton" name="pushButtonCompute">
+      <property name="text">
+       <string>Compute</string>
+      </property>
+     </widget>
+    </item>
+    <item row="0" column="0">
+     <widget class="QCheckBox" name="checkBoxAutoUpdate">
+      <property name="text">
+       <string>auto update</string>
+      </property>
+      <property name="checked">
+       <bool>true</bool>
+      </property>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>KNearestNeighborsMenu</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>KNearestNeighborsMenu</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/GudhUI/gui/MainWindow.cpp b/src/GudhUI/gui/MainWindow.cpp
new file mode 100644
index 00000000..85745e93
--- /dev/null
+++ b/src/GudhUI/gui/MainWindow.cpp
@@ -0,0 +1,283 @@
+#include "MainWindow.h"
+
+#include <QWidget>
+#include <QInputDialog>
+#include <QFileDialog>
+
+#include <fenv.h>
+
+
+#include "gui/Menu_k_nearest_neighbors.h"
+#include "gui/Menu_uniform_neighbors.h"
+#include "gui/Menu_edge_contraction.h"
+#include "gui/Menu_persistence.h"
+
+
+MainWindow::MainWindow(QWidget* parent):
+menu_k_nearest_neighbors_(new Menu_k_nearest_neighbors(this)),
+menu_uniform_neighbors_(new Menu_uniform_neighbors(this)),
+menu_edge_contraction_(new Menu_edge_contraction(this,model_)),
+menu_persistence_(new Menu_persistence(this))
+{
+#ifndef NDEBUG // catch nan
+feenableexcept(FE_DIVBYZERO | FE_INVALID | FE_OVERFLOW);
+#endif
+
+	setupUi(this);
+
+	viewer_instructor_ = new Viewer_instructor(
+			this,
+			this->viewer,
+			model_.complex_
+	);
+
+	connectActions();
+
+	update_view();
+}
+
+void 
+MainWindow::closeEvent(QCloseEvent *event){
+	exit(0);
+}
+
+
+void 
+MainWindow::connectActions(){
+	QObject::connect(this->actionLoad_complex, SIGNAL(triggered()), this,
+			SLOT(off_file_open()));
+	QObject::connect(this->actionLoad_points, SIGNAL(triggered()), this,
+			SLOT(off_points_open()));
+	QObject::connect(this->actionSave_complex, SIGNAL(triggered()), this,
+			SLOT(off_file_save()));
+	QObject::connect(this->actionSave_points, SIGNAL(triggered()), this,
+			SLOT(off_points_save()));
+
+	QObject::connect(this->actionShow_graph_stats, SIGNAL(triggered()), this,
+			SLOT(show_graph_stats()));
+	QObject::connect(this->actionShow_complex_stats, SIGNAL(triggered()), this,
+			SLOT(show_complex_stats()));
+	QObject::connect(this->actionShow_complex_dimension, SIGNAL(triggered()), this,
+			SLOT(show_complex_dimension()));
+
+	QObject::connect(this->actionUniform_proximity_graph, SIGNAL(triggered()), this,
+			SLOT(build_rips_menu()));
+	QObject::connect(this->actionK_nearest_neighbors_graph, SIGNAL(triggered()), this,
+			SLOT(build_k_nearest_neighbors_menu()));
+
+
+	QObject::connect(this->actionContract_edges, SIGNAL(triggered()), this,
+			SLOT(contract_edge_menu()));
+
+	QObject::connect(this->actionCollapse_vertices, SIGNAL(triggered()), this,
+			SLOT(collapse_vertices()));
+
+	QObject::connect(this->actionCollapse_edges, SIGNAL(triggered()), this,
+			SLOT(collapse_edges()));
+
+	QObject::connect(this->actionNoise, SIGNAL(triggered()), this,
+				SLOT(uniform_noise()));
+	QObject::connect(this->actionLloyd, SIGNAL(triggered()), this,
+				SLOT(lloyd()));
+
+
+	//view
+	QObject::connect(this->actionPoints, SIGNAL(triggered()), this->viewer_instructor_,
+				SLOT(change_draw_vertices()));
+	QObject::connect(this->actionEdges, SIGNAL(triggered()), this->viewer_instructor_,
+					SLOT(change_draw_edges()));
+	QObject::connect(this->actionTriangles, SIGNAL(triggered()), this->viewer_instructor_,
+					SLOT(change_draw_triangles()));
+
+	//topology
+	QObject::connect(this->actionShow_homology_group, SIGNAL(triggered()), this,
+			SLOT(show_homology_group()));
+	QObject::connect(this->actionEuler_characteristic, SIGNAL(triggered()), this,
+				SLOT(show_euler_characteristic()));
+	QObject::connect(this->actionPersistence, SIGNAL(triggered()), this,
+				SLOT(persistence_menu()));
+
+
+
+	QObject::connect(this, SIGNAL(sceneChanged()), this->viewer_instructor_,
+			SLOT(sceneChanged()));
+
+}
+
+void
+MainWindow::init_view() const{
+	viewer_instructor_->initialize_bounding_box();
+	viewer_instructor_->show_entire_scene();
+	update_view();
+}
+
+
+void
+MainWindow::update_view() const{
+	emit (sceneChanged());
+}
+
+
+
+/**
+ * open a file chooser to choose an off to load
+ */
+void 
+MainWindow::off_file_open(){
+	QString fileName = QFileDialog::getOpenFileName(this, tr("Open off File"),
+			"~/", tr("off files (*.off)"));
+	if (!fileName.isEmpty()){
+		model_.off_file_open(fileName.toStdString());
+		init_view();
+	}
+}
+
+void
+MainWindow::off_points_open(){
+	QString fileName = QFileDialog::getOpenFileName(this, tr("Open points in a off file"),
+			"~/", tr("off files (*.off)"));
+	if (!fileName.isEmpty()){
+		model_.off_points_open(fileName.toStdString());
+		init_view();
+	}
+}
+
+
+/**
+ * open a file chooser to choose an off to save
+ */
+void 
+MainWindow::off_file_save(){
+	QString fileName = QFileDialog::getOpenFileName(this, tr("Save to off File"),
+			"~/", tr("off files (*.off)"));
+	if (!fileName.isEmpty())
+	{
+		model_.off_file_save(fileName.toStdString());
+	}
+}
+
+/**
+ * open a file chooser to choose an off to save
+ */
+void
+MainWindow::off_points_save(){
+	QString fileName = QFileDialog::getOpenFileName(this, tr("Save to off File"),
+			"~/", tr("off files (*.off)"));
+	if (!fileName.isEmpty())
+	{
+		model_.off_points_save(fileName.toStdString());
+	}
+}
+
+
+void
+MainWindow::show_graph_stats(){
+	model_.show_graph_stats();
+}
+
+void
+MainWindow::show_complex_stats(){
+	model_.show_complex_stats();
+}
+
+void 
+MainWindow::show_complex_dimension(){
+	model_.show_complex_dimension();
+}
+
+
+void
+MainWindow::build_rips_menu(){
+	menu_uniform_neighbors_->show();
+}
+
+void
+MainWindow::build_rips(double alpha){
+	model_.build_rips(alpha);
+	update_view();
+}
+
+void
+MainWindow::build_k_nearest_neighbors_menu(){
+	menu_k_nearest_neighbors_->show();
+}
+
+void
+MainWindow::build_k_nearest_neighbors(unsigned k){
+	model_.build_k_nearest_neighbors(k);
+	update_view();
+}
+
+void
+MainWindow::contract_edge_menu(){
+	menu_edge_contraction_->show();
+}
+
+void
+MainWindow::contract_edges(unsigned num_collapses){
+	std::cerr <<"Collapse "<<num_collapses<< " vertices\n";
+	model_.contract_edges(num_collapses);
+	update_view();
+}
+
+
+void
+MainWindow::collapse_edges(){
+	std::cerr <<"Collapse "<<100<< " edges\n";
+	model_.collapse_edges(100);
+	update_view();
+}
+
+
+
+void
+MainWindow::collapse_vertices(){
+	std::cerr <<"Collapse vertices edges\n";
+	model_.collapse_vertices(0);
+	update_view();
+}
+
+
+void
+MainWindow::uniform_noise(){
+	bool ok;
+	double amplitude = QInputDialog::getDouble(this, tr("Uniform noise"),
+			tr("Amplitude:"), 0, 0, 10000, 3, &ok);
+	srand(time(NULL));
+	if (ok)
+		model_.uniform_noise(amplitude);
+}
+
+
+void
+MainWindow::lloyd(){
+	//todo 1 ask lloyd parameters
+	model_.lloyd(0,0);
+	update_view();
+}
+
+void
+MainWindow::show_homology_group(){
+	model_.show_homology_group();
+}
+
+void
+MainWindow::show_euler_characteristic(){
+	model_.show_euler_characteristic();
+}
+
+
+
+void
+MainWindow::persistence_menu(){
+	menu_persistence_->show();
+}
+
+void
+MainWindow::compute_persistence(int p,double threshold,int max_dim,double min_pers){
+	model_.show_persistence(p,threshold,max_dim,min_pers);
+}
+
+
+
+#include "MainWindow.moc"
diff --git a/src/GudhUI/gui/MainWindow.h b/src/GudhUI/gui/MainWindow.h
new file mode 100644
index 00000000..0eef29ed
--- /dev/null
+++ b/src/GudhUI/gui/MainWindow.h
@@ -0,0 +1,97 @@
+#ifndef MAIN_WINDOW_H
+#define MAIN_WINDOW_H
+
+
+#include <QMainWindow>
+#include "ui_main_window.h"
+#include "model/Model.h"
+#include "view/Viewer_instructor.h"
+
+
+class Menu_k_nearest_neighbors;
+class Menu_uniform_neighbors;
+class Menu_edge_contraction;
+class Menu_persistence;
+
+class MainWindow : public QMainWindow,public Ui::MainWindow{
+	Q_OBJECT
+
+private:
+	Model model_;
+	Viewer_instructor* viewer_instructor_;
+	Menu_k_nearest_neighbors* menu_k_nearest_neighbors_;
+	Menu_uniform_neighbors* menu_uniform_neighbors_;
+	Menu_edge_contraction* menu_edge_contraction_;
+	Menu_persistence* menu_persistence_;
+
+public:
+	MainWindow(QWidget* parent = 0);
+	void connectActions();
+
+	/**
+	 * compute the bounding box and calls update view
+	 */
+	void init_view() const;
+	void update_view() const;
+
+
+protected:
+	void closeEvent(QCloseEvent *event);
+	void keyPressEvent(QKeyEvent *event){}
+
+public:
+
+	public slots:
+
+
+	/**
+	 * open a file chooser to choose an off to load
+	 */
+	void off_file_open();
+
+	void off_points_open();
+
+	/**
+	 * open a file chooser to choose an off to save
+	 */
+	void off_file_save();
+	void off_points_save();
+
+	void show_graph_stats();
+	void show_complex_stats();
+	void show_complex_dimension();
+
+
+	void build_rips_menu();
+	void build_rips(double alpha);
+	void build_k_nearest_neighbors_menu();
+	void build_k_nearest_neighbors(unsigned k);
+
+
+	void contract_edge_menu();
+	void contract_edges(unsigned num_collapses);
+
+
+	void collapse_vertices();
+	void collapse_edges();
+
+
+	void uniform_noise();
+	void lloyd();
+
+	void show_homology_group();
+	void show_euler_characteristic();
+	void persistence_menu();
+	void compute_persistence(int p,double threshold,int max_dim,double min_pers);
+
+
+
+public:
+	signals:
+	void sceneChanged() const;
+	
+
+};
+
+
+#endif
diff --git a/src/GudhUI/gui/MenuEdgeContraction.ui b/src/GudhUI/gui/MenuEdgeContraction.ui
new file mode 100644
index 00000000..da2e5c82
--- /dev/null
+++ b/src/GudhUI/gui/MenuEdgeContraction.ui
@@ -0,0 +1,118 @@
+<?xml version="1.0" encoding="UTF-8"?>

+<ui version="4.0">

+ <class>MenuEdgeContraction</class>

+ <widget class="QDialog" name="MenuEdgeContraction">

+  <property name="geometry">

+   <rect>

+    <x>0</x>

+    <y>0</y>

+    <width>362</width>

+    <height>209</height>

+   </rect>

+  </property>

+  <property name="windowTitle">

+   <string>Edge contraction</string>

+  </property>

+  <layout class="QGridLayout" name="gridLayout">

+   <item row="5" column="2">

+    <widget class="QSpinBox" name="spinBox_nb_remaining_vertices">

+     <property name="minimum">

+      <number>1</number>

+     </property>

+     <property name="maximum">

+      <number>999999999</number>

+     </property>

+     <property name="value">

+      <number>1</number>

+     </property>

+    </widget>

+   </item>

+   <item row="7" column="2">

+    <widget class="QCheckBox" name="checkBox_link_condition">

+     <property name="enabled">

+      <bool>false</bool>

+     </property>

+     <property name="text">

+      <string>Link condition</string>

+     </property>

+     <property name="checked">

+      <bool>true</bool>

+     </property>

+    </widget>

+   </item>

+   <item row="3" column="2" alignment="Qt::AlignRight">

+    <widget class="QLabel" name="txt_nb_collapses">

+     <property name="text">

+      <string>1</string>

+     </property>

+    </widget>

+   </item>

+   <item row="6" column="0">

+    <widget class="QLabel" name="label">

+     <property name="text">

+      <string>Policy</string>

+     </property>

+    </widget>

+   </item>

+   <item row="6" column="2">

+    <widget class="QComboBox" name="m_simplificationMethod">

+     <item>

+      <property name="text">

+       <string>Length_midpoint</string>

+      </property>

+     </item>

+    </widget>

+   </item>

+   <item row="2" column="2" alignment="Qt::AlignRight">

+    <widget class="QLabel" name="txt_nb_vertices">

+     <property name="text">

+      <string>0</string>

+     </property>

+    </widget>

+   </item>

+   <item row="2" column="0">

+    <widget class="QLabel" name="label_5">

+     <property name="text">

+      <string>Number of vertices</string>

+     </property>

+    </widget>

+   </item>

+   <item row="3" column="0" colspan="2">

+    <widget class="QLabel" name="label_3">

+     <property name="text">

+      <string>Number of contractions</string>

+     </property>

+    </widget>

+   </item>

+   <item row="5" column="0" colspan="2">

+    <widget class="QLabel" name="label_4">

+     <property name="text">

+      <string>Number of vertices after </string>

+     </property>

+    </widget>

+   </item>

+   <item row="1" column="0">

+    <widget class="QSlider" name="horizontalSlider">

+     <property name="minimum">

+      <number>0</number>

+     </property>

+     <property name="maximum">

+      <number>100</number>

+     </property>

+     <property name="orientation">

+      <enum>Qt::Horizontal</enum>

+     </property>

+    </widget>

+   </item>

+   <item row="1" column="2">

+    <widget class="QPushButton" name="pushButton_collapse">

+     <property name="text">

+      <string>Perform collapse</string>

+     </property>

+    </widget>

+   </item>

+  </layout>

+ </widget>

+ <resources/>

+ <connections/>

+</ui>

diff --git a/src/GudhUI/gui/Menu_edge_contraction.cpp b/src/GudhUI/gui/Menu_edge_contraction.cpp
new file mode 100644
index 00000000..dd2621be
--- /dev/null
+++ b/src/GudhUI/gui/Menu_edge_contraction.cpp
@@ -0,0 +1,91 @@
+/*
+ * Menu_edge_contraction.cpp
+ *
+ *  Created on: Sep 11, 2014
+ *      Author: dsalinas
+ */
+
+#ifndef MENU_EDGE_CONTRACTION_CPP_
+#define MENU_EDGE_CONTRACTION_CPP_
+
+
+#include "Menu_edge_contraction.h"
+
+Menu_edge_contraction::Menu_edge_contraction(MainWindow* parent,const Model& model):
+parent_(parent),model_(model)
+{
+	setupUi(this);
+	connectActions(parent_);
+}
+
+void Menu_edge_contraction::connectActions(MainWindow* parent)
+{
+	QObject::connect(
+			this->horizontalSlider,
+			SIGNAL(valueChanged(int)),
+			this,
+			SLOT(slider_value_changed(int))
+	);
+
+
+	QObject::connect(this, SIGNAL(contract_edges(unsigned)), parent, SLOT(contract_edges(unsigned)));
+
+	QObject::connect(this->pushButton_collapse, SIGNAL(clicked()), this, SLOT(send_contract_edges()));
+
+}
+
+void Menu_edge_contraction::slider_value_changed(int new_slider_value){
+	int num_collapses =
+			(horizontalSlider->value()==1)? 1 : horizontalSlider->value() * model_.num_vertices() / 100 ;
+	this->txt_nb_vertices->setNum((int)model_.num_vertices());
+	this->txt_nb_collapses->setNum(num_collapses);
+	this->spinBox_nb_remaining_vertices->setValue(model_.num_vertices()-num_collapses);
+}
+
+
+void
+Menu_edge_contraction::update_slider_value(){
+	int num_vertices = model_.num_vertices();
+	int num_collapses = (horizontalSlider->value()==1)? 1 : horizontalSlider->value() * num_vertices / 100 ;
+	int horizontal_slider_position = num_vertices>0?  num_collapses/(double)num_vertices * 100 : 1  ;
+	horizontalSlider->setValue(horizontal_slider_position);
+}
+
+
+void
+Menu_edge_contraction::update_gui_numbers(){
+	update_slider_value();
+	bool ok;
+	int num_collapses = this->txt_nb_collapses->text().toInt(&ok,10);
+	if(!ok) return;
+	this->txt_nb_vertices->setNum((int)model_.num_vertices());
+	this->txt_nb_collapses->setNum(num_collapses);
+	this->spinBox_nb_remaining_vertices->setValue(model_.num_vertices()-num_collapses);
+}
+
+void
+Menu_edge_contraction::update_gui_numbers(int new_value){
+	update_gui_numbers();
+}
+
+
+void
+Menu_edge_contraction::send_contract_edges(){
+	emit(contract_edges(num_collapses()));
+	update_gui_numbers();
+}
+
+unsigned
+Menu_edge_contraction::num_vertices(){
+	return model_.num_vertices();
+}
+
+unsigned
+Menu_edge_contraction::num_collapses(){
+	return (horizontalSlider->value()==1)? 1 : horizontalSlider->value() * num_vertices() / 100 ;
+}
+
+
+#include "Menu_edge_contraction.moc"
+
+#endif /* MENU_EDGE_CONTRACTION_CPP_ */
diff --git a/src/GudhUI/gui/Menu_edge_contraction.h b/src/GudhUI/gui/Menu_edge_contraction.h
new file mode 100644
index 00000000..e497a90f
--- /dev/null
+++ b/src/GudhUI/gui/Menu_edge_contraction.h
@@ -0,0 +1,52 @@
+/*
+ * Menu_edge_contraction.h
+ *
+ *  Created on: Sep 11, 2014
+ *      Author: dsalinas
+ */
+
+#ifndef MENU_EDGE_CONTRACTION_H_
+#define MENU_EDGE_CONTRACTION_H_
+
+
+#include "gui/MainWindow.h"
+#include "gui/ui_MenuEdgeContraction.h"
+
+#include "model/Model.h"
+
+
+class Menu_edge_contraction : public QDialog,public Ui::MenuEdgeContraction{
+	Q_OBJECT
+private:
+	MainWindow* parent_;
+	const Model& model_;
+
+
+	void update_slider_value();
+public:
+
+	Menu_edge_contraction(MainWindow* parent,const Model& model);
+
+	void connectActions(MainWindow* parent);
+
+
+private:
+	unsigned num_vertices();
+	unsigned num_collapses();
+
+	public slots:
+
+	void slider_value_changed(int new_slider_value);
+	void update_gui_numbers();
+	void update_gui_numbers(int);
+
+	void send_contract_edges();
+	signals:
+
+	void contract_edges(unsigned num_collapses);
+
+};
+
+
+
+#endif /* MENU_EDGE_CONTRACTION_H_ */
diff --git a/src/GudhUI/gui/Menu_k_nearest_neighbors.cpp b/src/GudhUI/gui/Menu_k_nearest_neighbors.cpp
new file mode 100644
index 00000000..21c67b2a
--- /dev/null
+++ b/src/GudhUI/gui/Menu_k_nearest_neighbors.cpp
@@ -0,0 +1,55 @@
+/*
+ * Menu_k_nearest_neighbors.cpp
+ *
+ *  Created on: Sep 11, 2014
+ *      Author: dsalinas
+ */
+
+
+#include "Menu_k_nearest_neighbors.h"
+
+Menu_k_nearest_neighbors::Menu_k_nearest_neighbors(QMainWindow* parent_):
+parent(parent_)
+{
+	setupUi(this);
+	connectActions(parent_);
+}
+
+void Menu_k_nearest_neighbors::connectActions(QMainWindow* parent){
+
+	QObject::connect(
+			this->pushButtonCompute,
+			SIGNAL(clicked()),
+			this,
+			SLOT(send_compute_k_nearest_neighbors())
+	);
+	QObject::connect(
+			this->spinBoxK,
+			SIGNAL(valueChanged(int)),
+			this,
+			SLOT(update_k(int))
+	);
+	QObject::connect(
+			this,
+			SIGNAL(compute_k_nearest_neighbors(unsigned)),
+			parent,
+			SLOT(build_k_nearest_neighbors(unsigned))
+	);
+
+}
+
+void Menu_k_nearest_neighbors::send_compute_k_nearest_neighbors(){
+	emit(compute_k_nearest_neighbors((unsigned)spinBoxK->value()));
+}
+
+void Menu_k_nearest_neighbors::accept(){
+	send_compute_k_nearest_neighbors();
+}
+
+void Menu_k_nearest_neighbors::update_k(int new_k_value){
+	if(checkBoxAutoUpdate->isChecked())
+		emit(compute_k_nearest_neighbors((unsigned)spinBoxK->value()));
+}
+
+
+#include "Menu_k_nearest_neighbors.moc"
diff --git a/src/GudhUI/gui/Menu_k_nearest_neighbors.h b/src/GudhUI/gui/Menu_k_nearest_neighbors.h
new file mode 100644
index 00000000..d72b0074
--- /dev/null
+++ b/src/GudhUI/gui/Menu_k_nearest_neighbors.h
@@ -0,0 +1,39 @@
+/*
+ * Menu_k_nearest_neighbors.h
+ *
+ *  Created on: Sep 11, 2014
+ *      Author: dsalinas
+ */
+
+#ifndef MENU_K_NEAREST_NEIGHBORS_H_
+#define MENU_K_NEAREST_NEIGHBORS_H_
+
+#include <QMainWindow>
+#include "gui/ui_KNearestNeighborsMenu.h"
+
+class QWidget;
+
+
+class Menu_k_nearest_neighbors : public QDialog,public Ui::KNearestNeighborsMenu{
+	Q_OBJECT
+private:
+	QMainWindow* parent;
+
+public:
+
+	Menu_k_nearest_neighbors(QMainWindow* parent_);
+
+	void connectActions(QMainWindow* parent);
+
+	public slots:
+	void send_compute_k_nearest_neighbors();
+	void update_k(int);
+	void accept();
+
+	signals:
+	void compute_k_nearest_neighbors(unsigned k);
+
+};
+
+
+#endif /* MENU_K_NEAREST_NEIGHBORS_H_ */
diff --git a/src/GudhUI/gui/Menu_persistence.cpp b/src/GudhUI/gui/Menu_persistence.cpp
new file mode 100644
index 00000000..fae3a0e6
--- /dev/null
+++ b/src/GudhUI/gui/Menu_persistence.cpp
@@ -0,0 +1,60 @@
+/*
+ * Menu_persistence.cpp
+ *  Created on: Jan 27, 2015
+ * 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 Sophia Antipolis-Méditerranée (France)
+ *
+ *    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/>.
+ * 
+ */
+
+
+#include "Menu_persistence.h"
+
+Menu_persistence::Menu_persistence(QMainWindow* parent_):parent(parent_)
+{
+	setupUi(this);
+	connectActions(parent_);
+}
+
+void Menu_persistence::connectActions(QMainWindow* parent){
+	QObject::connect(
+			this,
+			SIGNAL(compute_persistence(int,double,int,double)),
+			parent,
+			SLOT(compute_persistence(int,double,int,double))
+	);
+}
+
+void Menu_persistence::send_compute_persistence(){
+	emit(compute_persistence(p_spinBox->value(),threshold_doubleSpinBox->value(),
+			maxdimension_spinBox->value(),minpersistence_doubleSpinBox->value()));
+}
+
+void Menu_persistence::accept(){
+	send_compute_persistence();
+}
+
+//void Menu_persistence::compute_persistence(int p_fied,double threshold,int dim_max,double min_persistence){
+////	if(checkBoxAutoUpdate->isChecked())
+////		emit(compute_k_nearest_neighbors((unsigned)spinBoxK->value()));
+//}
+
+
+#include "Menu_persistence.moc"
diff --git a/src/GudhUI/gui/Menu_persistence.h b/src/GudhUI/gui/Menu_persistence.h
new file mode 100644
index 00000000..67b64afa
--- /dev/null
+++ b/src/GudhUI/gui/Menu_persistence.h
@@ -0,0 +1,59 @@
+/*
+ * Menu_persistence.h
+ *  Created on: Jan 27, 2015
+ * 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 Sophia Antipolis-Méditerranée (France)
+ *
+ *    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 MENU_PERSISTENCE_H_
+#define MENU_PERSISTENCE_H_
+
+
+#include <QMainWindow>
+#include "gui/ui_PersistenceMenu.h"
+
+class QWidget;
+
+
+class Menu_persistence : public QDialog,public Ui::PersistenceMenu{
+	Q_OBJECT
+private:
+	QMainWindow* parent;
+
+public:
+
+	Menu_persistence(QMainWindow* parent_);
+
+	void connectActions(QMainWindow* parent);
+
+	public slots:
+	void send_compute_persistence();
+	void accept();
+	signals:
+	void compute_persistence(int p_fied,double threshold,int dim_max,double min_persistence);
+
+};
+
+
+
+#endif /* MENU_PERSISTENCE_H_ */
diff --git a/src/GudhUI/gui/Menu_uniform_neighbors.cpp b/src/GudhUI/gui/Menu_uniform_neighbors.cpp
new file mode 100644
index 00000000..86e2593e
--- /dev/null
+++ b/src/GudhUI/gui/Menu_uniform_neighbors.cpp
@@ -0,0 +1,59 @@
+/*
+ * Menu_uniform_neighbors.cpp
+ *
+ *  Created on: Sep 11, 2014
+ *      Author: dsalinas
+ */
+
+
+
+
+
+#include "Menu_uniform_neighbors.h"
+
+Menu_uniform_neighbors::Menu_uniform_neighbors(QMainWindow* parent_):
+parent(parent_)
+{
+	setupUi(this);
+	connectActions(parent_);
+}
+
+void Menu_uniform_neighbors::connectActions(QMainWindow* parent){
+
+	QObject::connect(
+			this->pushButtonCompute,
+			SIGNAL(clicked()),
+			this,
+			SLOT(send_compute_uniform_neighbors())
+	);
+	QObject::connect(
+			this->doubleSpinBoxAlpha,
+			SIGNAL(valueChanged(double)),
+			this,
+			SLOT(update_alpha(double))
+	);
+	QObject::connect(
+			this,
+			SIGNAL(compute_uniform_neighbors(double)),
+			parent,
+			SLOT(build_rips(double))
+	);
+
+}
+
+void Menu_uniform_neighbors::send_compute_uniform_neighbors(){
+	emit(compute_uniform_neighbors(doubleSpinBoxAlpha->value()));
+}
+
+void Menu_uniform_neighbors::accept(){
+	send_compute_uniform_neighbors();
+}
+
+void Menu_uniform_neighbors::update_alpha(double alpha){
+	if(checkBoxAutoUpdate->isChecked())
+		emit(compute_uniform_neighbors(doubleSpinBoxAlpha->value()));
+}
+
+
+
+#include "Menu_uniform_neighbors.moc"
diff --git a/src/GudhUI/gui/Menu_uniform_neighbors.h b/src/GudhUI/gui/Menu_uniform_neighbors.h
new file mode 100644
index 00000000..cb90cc88
--- /dev/null
+++ b/src/GudhUI/gui/Menu_uniform_neighbors.h
@@ -0,0 +1,36 @@
+/*
+ * Menu_uniform_neighbors.h
+ *
+ *  Created on: Sep 11, 2014
+ *      Author: dsalinas
+ */
+
+#ifndef MENU_UNIFORM_NEIGHBORS_H_
+#define MENU_UNIFORM_NEIGHBORS_H_
+
+#include <QMainWindow>
+#include "gui/ui_UniformNeighborsMenu.h"
+
+class Menu_uniform_neighbors : public QDialog,public Ui::UniformMenu {
+	Q_OBJECT
+private:
+	QMainWindow* parent;
+
+public:
+
+	Menu_uniform_neighbors(QMainWindow* parent_);
+
+	void connectActions(QMainWindow* parent);
+
+	public slots:
+	void send_compute_uniform_neighbors();
+	void update_alpha(double);
+	void accept();
+
+	signals:
+	void compute_uniform_neighbors(double alpha);
+
+};
+
+
+#endif /* MENU_UNIFORM_NEIGHBORS_H_ */
diff --git a/src/GudhUI/gui/PersistenceMenu.ui b/src/GudhUI/gui/PersistenceMenu.ui
new file mode 100644
index 00000000..29327db2
--- /dev/null
+++ b/src/GudhUI/gui/PersistenceMenu.ui
@@ -0,0 +1,139 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>PersistenceMenu</class>
+ <widget class="QDialog" name="PersistenceMenu">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>354</width>
+    <height>275</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Point cloud persistence</string>
+  </property>
+  <widget class="QWidget" name="">
+   <property name="geometry">
+    <rect>
+     <x>20</x>
+     <y>23</y>
+     <width>318</width>
+     <height>226</height>
+    </rect>
+   </property>
+   <layout class="QVBoxLayout" name="verticalLayout">
+    <item>
+     <layout class="QGridLayout" name="gridLayout">
+      <item row="0" column="0">
+       <widget class="QSpinBox" name="p_spinBox">
+        <property name="minimum">
+         <number>2</number>
+        </property>
+        <property name="value">
+         <number>2</number>
+        </property>
+       </widget>
+      </item>
+      <item row="0" column="1">
+       <widget class="QLabel" name="label">
+        <property name="text">
+         <string>Coefficient Z/pZ</string>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="0">
+       <widget class="QSpinBox" name="maxdimension_spinBox">
+        <property name="maximum">
+         <number>9999</number>
+        </property>
+        <property name="value">
+         <number>10</number>
+        </property>
+       </widget>
+      </item>
+      <item row="1" column="1">
+       <widget class="QLabel" name="label_4">
+        <property name="text">
+         <string>Max dimension</string>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="0">
+       <widget class="QDoubleSpinBox" name="threshold_doubleSpinBox">
+        <property name="maximum">
+         <double>9999.000000000000000</double>
+        </property>
+        <property name="value">
+         <double>1.000000000000000</double>
+        </property>
+       </widget>
+      </item>
+      <item row="2" column="1">
+       <widget class="QLabel" name="label_2">
+        <property name="text">
+         <string>Max Rips offset</string>
+        </property>
+       </widget>
+      </item>
+      <item row="3" column="0">
+       <widget class="QDoubleSpinBox" name="minpersistence_doubleSpinBox"/>
+      </item>
+      <item row="3" column="1">
+       <widget class="QLabel" name="label_3">
+        <property name="text">
+         <string>Minimum Persistence</string>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </item>
+    <item>
+     <widget class="QDialogButtonBox" name="buttonBox">
+      <property name="orientation">
+       <enum>Qt::Horizontal</enum>
+      </property>
+      <property name="standardButtons">
+       <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+      </property>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>PersistenceMenu</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>PersistenceMenu</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/GudhUI/gui/UniformNeighborsMenu.ui b/src/GudhUI/gui/UniformNeighborsMenu.ui
new file mode 100644
index 00000000..1f7cf980
--- /dev/null
+++ b/src/GudhUI/gui/UniformNeighborsMenu.ui
@@ -0,0 +1,150 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>UniformMenu</class>
+ <widget class="QDialog" name="UniformMenu">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>292</width>
+    <height>209</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>Uniform neighbors (Rips)</string>
+  </property>
+  <widget class="QDialogButtonBox" name="buttonBox">
+   <property name="geometry">
+    <rect>
+     <x>50</x>
+     <y>160</y>
+     <width>171</width>
+     <height>32</height>
+    </rect>
+   </property>
+   <property name="orientation">
+    <enum>Qt::Horizontal</enum>
+   </property>
+   <property name="standardButtons">
+    <set>QDialogButtonBox::Cancel|QDialogButtonBox::Ok</set>
+   </property>
+  </widget>
+  <widget class="QWidget" name="formLayoutWidget">
+   <property name="geometry">
+    <rect>
+     <x>30</x>
+     <y>10</y>
+     <width>249</width>
+     <height>84</height>
+    </rect>
+   </property>
+   <layout class="QFormLayout" name="formLayout_2">
+    <property name="fieldGrowthPolicy">
+     <enum>QFormLayout::AllNonFixedFieldsGrow</enum>
+    </property>
+    <item row="0" column="0">
+     <widget class="QLabel" name="label">
+      <property name="text">
+       <string>alpha</string>
+      </property>
+     </widget>
+    </item>
+    <item row="1" column="0">
+     <widget class="QLabel" name="label_2">
+      <property name="text">
+       <string>Metric</string>
+      </property>
+     </widget>
+    </item>
+    <item row="1" column="1">
+     <widget class="QComboBox" name="comboBoxMetric">
+      <item>
+       <property name="text">
+        <string>Ambient</string>
+       </property>
+      </item>
+      <item>
+       <property name="text">
+        <string>Reduced Space</string>
+       </property>
+      </item>
+     </widget>
+    </item>
+    <item row="0" column="1">
+     <widget class="QDoubleSpinBox" name="doubleSpinBoxAlpha">
+      <property name="maximum">
+       <double>100000000.000000000000000</double>
+      </property>
+      <property name="singleStep">
+       <double>0.100000000000000</double>
+      </property>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QWidget" name="gridLayoutWidget">
+   <property name="geometry">
+    <rect>
+     <x>30</x>
+     <y>110</y>
+     <width>250</width>
+     <height>40</height>
+    </rect>
+   </property>
+   <layout class="QGridLayout" name="gridLayout">
+    <item row="0" column="1">
+     <widget class="QPushButton" name="pushButtonCompute">
+      <property name="text">
+       <string>Compute</string>
+      </property>
+     </widget>
+    </item>
+    <item row="0" column="0">
+     <widget class="QCheckBox" name="checkBoxAutoUpdate">
+      <property name="text">
+       <string>auto update</string>
+      </property>
+      <property name="checked">
+       <bool>true</bool>
+      </property>
+     </widget>
+    </item>
+   </layout>
+  </widget>
+ </widget>
+ <resources/>
+ <connections>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>accepted()</signal>
+   <receiver>UniformMenu</receiver>
+   <slot>accept()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>248</x>
+     <y>254</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>157</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+  <connection>
+   <sender>buttonBox</sender>
+   <signal>rejected()</signal>
+   <receiver>UniformMenu</receiver>
+   <slot>reject()</slot>
+   <hints>
+    <hint type="sourcelabel">
+     <x>316</x>
+     <y>260</y>
+    </hint>
+    <hint type="destinationlabel">
+     <x>286</x>
+     <y>274</y>
+    </hint>
+   </hints>
+  </connection>
+ </connections>
+</ui>
diff --git a/src/GudhUI/gui/Viewer.cpp b/src/GudhUI/gui/Viewer.cpp
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/src/GudhUI/gui/Viewer.cpp
diff --git a/src/GudhUI/gui/Viewer_instructor.cpp b/src/GudhUI/gui/Viewer_instructor.cpp
new file mode 100644
index 00000000..e69de29b
--- /dev/null
+++ b/src/GudhUI/gui/Viewer_instructor.cpp
diff --git a/src/GudhUI/gui/gudhui.cpp b/src/GudhUI/gui/gudhui.cpp
new file mode 100644
index 00000000..8d90270f
--- /dev/null
+++ b/src/GudhUI/gui/gudhui.cpp
@@ -0,0 +1,17 @@
+#include "MainWindow.h"

+#include <QApplication>

+#include <CGAL/Qt/resources.h>

+

+

+int main(int argc, char** argv)

+{

+ QApplication application(argc,argv);

+ application.setOrganizationDomain("inria.fr");

+ application.setOrganizationName("INRIA");

+ application.setApplicationName("GudhUI");

+  

+  MainWindow mw;

+  application.setQuitOnLastWindowClosed(false);

+  mw.show();

+  return application.exec();

+}

diff --git a/src/GudhUI/gui/main_window.ui b/src/GudhUI/gui/main_window.ui
new file mode 100644
index 00000000..ac3caf41
--- /dev/null
+++ b/src/GudhUI/gui/main_window.ui
@@ -0,0 +1,231 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>MainWindow</class>
+ <widget class="QMainWindow" name="MainWindow">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>861</width>
+    <height>880</height>
+   </rect>
+  </property>
+  <property name="windowTitle">
+   <string>GudhUI</string>
+  </property>
+  <property name="tabShape">
+   <enum>QTabWidget::Rounded</enum>
+  </property>
+  <widget class="QWidget" name="centralwidget">
+   <layout class="QVBoxLayout" name="verticalLayout_2">
+    <item>
+     <layout class="QHBoxLayout" name="horizontalLayout">
+      <item>
+       <widget class="Viewer" name="viewer" native="true">
+        <property name="autoFillBackground">
+         <bool>false</bool>
+        </property>
+       </widget>
+      </item>
+     </layout>
+    </item>
+   </layout>
+  </widget>
+  <widget class="QMenuBar" name="menubar">
+   <property name="geometry">
+    <rect>
+     <x>0</x>
+     <y>0</y>
+     <width>861</width>
+     <height>34</height>
+    </rect>
+   </property>
+   <widget class="QMenu" name="menuFile">
+    <property name="title">
+     <string>File</string>
+    </property>
+    <addaction name="actionLoad_points"/>
+    <addaction name="actionLoad_complex"/>
+    <addaction name="actionSave_points"/>
+    <addaction name="actionSave_complex"/>
+   </widget>
+   <widget class="QMenu" name="menuPoints">
+    <property name="title">
+     <string>Points</string>
+    </property>
+    <addaction name="actionNoise"/>
+   </widget>
+   <widget class="QMenu" name="menuGraph">
+    <property name="title">
+     <string>Graph</string>
+    </property>
+    <addaction name="actionK_nearest_neighbors_graph"/>
+    <addaction name="actionUniform_proximity_graph"/>
+    <addaction name="actionShow_graph_stats"/>
+   </widget>
+   <widget class="QMenu" name="menuComplex">
+    <property name="title">
+     <string>Complex</string>
+    </property>
+    <addaction name="actionContract_edges"/>
+    <addaction name="actionCollapse_vertices"/>
+    <addaction name="actionCollapse_edges"/>
+    <addaction name="actionShow_complex_stats"/>
+    <addaction name="actionShow_complex_dimension"/>
+   </widget>
+   <widget class="QMenu" name="menuView">
+    <property name="title">
+     <string>View</string>
+    </property>
+    <addaction name="actionPoints"/>
+    <addaction name="actionEdges"/>
+    <addaction name="actionTriangles"/>
+    <addaction name="actionChange_projection"/>
+   </widget>
+   <widget class="QMenu" name="menuTopology">
+    <property name="title">
+     <string>Topology</string>
+    </property>
+    <addaction name="actionEuler_characteristic"/>
+    <addaction name="actionShow_homology_group"/>
+    <addaction name="actionPersistence"/>
+   </widget>
+   <addaction name="menuFile"/>
+   <addaction name="menuPoints"/>
+   <addaction name="menuGraph"/>
+   <addaction name="menuComplex"/>
+   <addaction name="menuTopology"/>
+   <addaction name="menuView"/>
+  </widget>
+  <widget class="QStatusBar" name="statusbar"/>
+  <action name="actionLoad_points">
+   <property name="text">
+    <string>Load points</string>
+   </property>
+  </action>
+  <action name="actionLoad_complex">
+   <property name="text">
+    <string>Load complex</string>
+   </property>
+  </action>
+  <action name="actionSave_points">
+   <property name="text">
+    <string>Save points</string>
+   </property>
+  </action>
+  <action name="actionSave_complex">
+   <property name="text">
+    <string>Save complex</string>
+   </property>
+  </action>
+  <action name="actionNoise">
+   <property name="text">
+    <string>Noise</string>
+   </property>
+  </action>
+  <action name="actionLloyd">
+   <property name="text">
+    <string>Lloyd</string>
+   </property>
+  </action>
+  <action name="actionUniform_proximity_graph">
+   <property name="text">
+    <string>Uniform proximity graph</string>
+   </property>
+  </action>
+  <action name="actionK_nearest_neighbors_graph">
+   <property name="text">
+    <string>k-nearest neighbors graph</string>
+   </property>
+  </action>
+  <action name="actionShow_graph_stats">
+   <property name="text">
+    <string>Show graph stats</string>
+   </property>
+  </action>
+  <action name="actionBuild_complex_from_graph">
+   <property name="text">
+    <string>Graph expansion</string>
+   </property>
+  </action>
+  <action name="actionBuild_Delaunay_from_points">
+   <property name="text">
+    <string>Delaunay from points</string>
+   </property>
+  </action>
+  <action name="actionContract_edges">
+   <property name="text">
+    <string>Contract edges</string>
+   </property>
+  </action>
+  <action name="actionCollapse_vertices">
+   <property name="text">
+    <string>Collapse vertices</string>
+   </property>
+  </action>
+  <action name="actionCollapse_edges">
+   <property name="text">
+    <string>Collapse edges</string>
+   </property>
+  </action>
+  <action name="actionPoints">
+   <property name="text">
+    <string>Points</string>
+   </property>
+  </action>
+  <action name="actionEdges">
+   <property name="text">
+    <string>Edges</string>
+   </property>
+  </action>
+  <action name="actionTriangles">
+   <property name="text">
+    <string>Triangles</string>
+   </property>
+  </action>
+  <action name="actionChange_projection">
+   <property name="text">
+    <string>Change projection</string>
+   </property>
+  </action>
+  <action name="actionShow_complex_stats">
+   <property name="text">
+    <string>Show complex stats</string>
+   </property>
+  </action>
+  <action name="actionShow_complex_dimension">
+   <property name="text">
+    <string>Show complex dimension</string>
+   </property>
+  </action>
+  <action name="actionShow_homology_group">
+   <property name="text">
+    <string>Homology groups</string>
+   </property>
+  </action>
+  <action name="actionPersistence">
+   <property name="text">
+    <string>Point cloud persistence</string>
+   </property>
+  </action>
+  <action name="actionEuler_characteristic">
+   <property name="text">
+    <string>Euler characteristic</string>
+   </property>
+  </action>
+  <action name="actionHomology_groups">
+   <property name="text">
+    <string>Homology groups</string>
+   </property>
+  </action>
+ </widget>
+ <customwidgets>
+  <customwidget>
+   <class>Viewer</class>
+   <extends>QWidget</extends>
+   <header>view/Viewer.h</header>
+  </customwidget>
+ </customwidgets>
+ <resources/>
+ <connections/>
+</ui>