Merge remote-tracking branch 'cgal/6.1.x-branch' into 'cgal/main'

Constrained_triangulation_3/examples/Constrained_triangulation_3/ccdt_3_from_soup.cpp

@@ -5,6 +5,7 @@
 #include <CGAL/make_conforming_constrained_Delaunay_triangulation_3.h>
 
 #include <vector>
+#include <algorithm>
 
 using K = CGAL::Exact_predicates_inexact_constructions_kernel;
 
@@ -29,6 +30,18 @@ int main(int argc, char* argv[])
             << "Number of constrained facets in the CDT: "
             << ccdt.number_of_constrained_facets() << '\n';
 
+  // Collect constrained facets per polygon
+  std::vector<std::size_t> constrained_facets(polygons.size());
+  for(auto facet : ccdt.constrained_facets())
+  {
+    int i = ccdt.face_constraint_index(facet);
+    ++constrained_facets[i];
+  }
+  auto it = std::max_element(constrained_facets.begin(), constrained_facets.end());
+
+  std::cout << "The polygon with the most constrained facets has index "
+            << (it - constrained_facets.begin()) << " and " << *it << " facets.\n";
+
   std::ofstream ofs(argc > 2 ? argv[2] : "out.mesh");
   ofs.precision(17);
   CGAL::IO::write_MEDIT(ofs, ccdt);

Constrained_triangulation_3/include/CGAL/Conforming_constrained_Delaunay_triangulation_3.h

@@ -1034,7 +1034,7 @@ public:
    */
   CDT_3_signed_index face_constraint_index(typename Triangulation::Cell_handle ch, int i) const
   {
-    return ch->face_id[static_cast<unsigned>(i)];
+    return ch->ccdt_3_data().face_constraint_index(i);
   }
 
   /*!

Constrained_triangulation_3/include/CGAL/Conforming_constrained_Delaunay_triangulation_cell_base_3.h

@@ -98,7 +98,7 @@ public:
         CGAL::read(is, i);
       }
       if(!is) return is;
-      c.face_id[li] = i;
+      c->ccdt_3_data().set_face_constraint_index(li, i);
     }
     return is;
   }

Lab/demo/Lab/MainWindow.cpp

@@ -1795,8 +1795,8 @@ bool MainWindow::loadScript(QFileInfo info)
   QString program;
   QString filename = info.absoluteFilePath();
   QFile script_file(filename);
-  script_file.open(QIODevice::ReadOnly);
-  if(!script_file.isReadable()) {
+  bool success = script_file.open(QIODevice::ReadOnly);
+  if((! success) || (!script_file.isReadable())) {
     throw std::ios_base::failure(script_file.errorString().toStdString());
   }
   program = script_file.readAll();
@@ -2747,9 +2747,9 @@ void MainWindow::exportStatistics()
   if(filename.isEmpty())
     return;
   QFile output(filename);
-  output.open(QIODevice::WriteOnly | QIODevice::Text);
+  bool success = output.open(QIODevice::WriteOnly | QIODevice::Text);
 
-  if(!output.isOpen()){
+  if((! success) || (!output.isOpen())){
     qDebug() << "- Error, unable to open" << "outputFilename" << "for output";
   }
   QTextStream outStream(&output);

Lab/demo/Lab/Plugins/Camera_position/Camera_positions_list.cpp

@@ -93,18 +93,20 @@ bool Camera_positions_list::save(QString filename) {
   if(m_model->rowCount() <1)
     return false;
   QFile file(filename);
-  file.open(QIODevice::WriteOnly);
-  QTextStream out(&file);
-  for(int i = 0; i < m_model->rowCount(); ++i)
-  {
-    QStandardItem* item = m_model->item(i);
-    out << item->data(Qt::DisplayRole).toString()
-        << "\n"
-        << item->data(Qt::UserRole).toString()
-        << "\n";
+  if(file.open(QIODevice::WriteOnly)){
+    QTextStream out(&file);
+    for(int i = 0; i < m_model->rowCount(); ++i)
+    {
+      QStandardItem* item = m_model->item(i);
+      out << item->data(Qt::DisplayRole).toString()
+          << "\n"
+          << item->data(Qt::UserRole).toString()
+          << "\n";
+    }
+    file.close();
+    return true;
   }
-  file.close();
-  return true;
+  return false;
 }
 
 void Camera_positions_list::on_saveButton_pressed()
@@ -129,19 +131,24 @@ void Camera_positions_list::on_openButton_pressed()
 
 void Camera_positions_list::load(QString filename) {
   QFile file(filename);
-  std::clog << "Loading camera positions " << qPrintable(filename) << std::endl;
-  file.open(QIODevice::ReadOnly);
-  QTextStream input(&file);
-  while(!input.atEnd()) {
-    QString text = input.readLine(1000);
-    QString coord = input.readLine(1000);
-    if(text.isNull() || coord.isNull()) return;
-    CGAL::qglviewer::Frame frame;
-    if(Three::activeViewer()->readFrame(coord, frame))
-    {
-      addItem(text,
-              Three::activeViewer()->dumpFrame(frame));
+
+  if(file.open(QIODevice::ReadOnly)){
+    std::clog << "Loading camera positions " << qPrintable(filename) << std::endl;
+
+    QTextStream input(&file);
+    while(!input.atEnd()) {
+      QString text = input.readLine(1000);
+      QString coord = input.readLine(1000);
+      if(text.isNull() || coord.isNull()) return;
+      CGAL::qglviewer::Frame frame;
+      if(Three::activeViewer()->readFrame(coord, frame))
+      {
+        addItem(text,
+                Three::activeViewer()->dumpFrame(frame));
+      }
     }
+  }else {
+    std::clog << "Loading camera positions " << qPrintable(filename) << " failed" << std::endl;
   }
 }
 

Periodic_3_triangulation_3/demo/Periodic_3_triangulation_3/MainWindow.h

@@ -138,7 +138,12 @@ public Q_SLOTS:
 private:
   void showFileBox(QString title, QString fileName) {
     QFile textFile(fileName);
-    textFile.open(QIODevice::ReadOnly);
+    bool b = textFile.open(QIODevice::ReadOnly);
+    if(!b){
+      QMessageBox::critical(this, tr("Error"),
+          tr("Could not open file %1.").arg(fileName));
+      return;
+    }
     QMessageBox mb(QMessageBox::NoIcon,
         title,
         QTextStream(&textFile).readAll(),