add a menu to show/hide vertices

GraphicsView/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.cpp

@@ -192,6 +192,8 @@ public slots:
 
   void processInput(CGAL::Object o);
 
+  void on_actionShowVertices_toggled(bool checked);
+
   void on_actionShowDelaunay_toggled(bool checked);
 
   void on_actionShowTriangulationInDomain_toggled(bool checked);
@@ -300,6 +302,7 @@ MainWindow::MainWindow()
   // Check two actions 
   this->actionInsertPolyline->setChecked(true);
   this->actionShowDelaunay->setChecked(true);
+  this->actionShowVertices->setChecked(true);
   this->actionShowTriangulationInDomain->setChecked(false);
   this->actionShow_faces_in_domain->setChecked(true);
   this->actionShow_constrained_edges->setChecked(true);
@@ -402,6 +405,13 @@ MainWindow::on_actionShowDelaunay_toggled(bool checked)
   update();
 }
 
+void
+MainWindow::on_actionShowVertices_toggled(bool checked)
+{
+  dgi->setVisibleVertices(checked);
+  update();
+}
+
 void
 MainWindow::on_actionShowTriangulationInDomain_toggled(bool checked)
 {

GraphicsView/demo/Triangulation_2/Constrained_Delaunay_triangulation_2.ui

@@ -108,6 +108,7 @@
     <addaction name="actionInsertPolyline"/>
     <addaction name="actionInsertSeeds_OnOff"/>
     <addaction name="separator"/>
+    <addaction name="actionShowVertices"/>
     <addaction name="actionShowDelaunay"/>
     <addaction name="actionShowVoronoi"/>
     <addaction name="actionShowTriangulationInDomain"/>
@@ -377,6 +378,17 @@
     <string>Show triangulation in domain only</string>
    </property>
   </action>
+  <action name="actionShowVertices">
+   <property name="checkable">
+    <bool>true</bool>
+   </property>
+   <property name="checked">
+    <bool>true</bool>
+   </property>
+   <property name="text">
+    <string>Show vertices</string>
+   </property>
+  </action>
  </widget>
  <resources>
   <include location="Constrained_Delaunay_triangulation_2.qrc"/>