Create Qt Point Set demo from Qt Polyhedron demo and Poisson MFC demo.

Step 4:
- added xyz_plugin to load/save .xyz/.pwn point set files

Surface_reconstruction_points_3/demo/Surface_reconstruction_points_3/Point_set_demo/CMakeLists.txt

@@ -175,6 +175,9 @@ if(CGAL_Qt4_FOUND AND QT4_FOUND AND OPENGL_FOUND AND QGLVIEWER_FOUND)
   polyhedron_demo_plugin(off_plugin Point_set_demo_off_plugin)
   target_link_libraries(off_plugin scene_polyhedron_item point_set)
 
+  polyhedron_demo_plugin(xyz_plugin Point_set_demo_xyz_plugin)
+  target_link_libraries(xyz_plugin scene_polyhedron_item point_set)
+
   polyhedron_demo_plugin(convex_hull_plugin Point_set_demo_convex_hull_plugin)
   target_link_libraries(convex_hull_plugin scene_polyhedron_item)
 

Surface_reconstruction_points_3/demo/Surface_reconstruction_points_3/Point_set_demo/Point_set_demo_off_plugin.cpp

@@ -35,8 +35,10 @@ Point_set_demo_off_plugin::load(QFileInfo fileinfo) {
 
   // Open file
   std::ifstream in(fileinfo.filePath().toUtf8());
-  if(!in)
-    std::cerr << "Error!\n";
+  if(!in) {
+    std::cerr << "Error! Cannot open file " << (const char*)fileinfo.filePath().toUtf8() << std::endl;
+    return NULL;
+  }
     
   // Try to read .off in a polyhedron
   Scene_polyhedron_item* item = new Scene_polyhedron_item();

Surface_reconstruction_points_3/demo/Surface_reconstruction_points_3/Point_set_demo/Point_set_demo_xyz_plugin.cpp

@@ -0,0 +1,74 @@
+#include "Point_set_scene_item.h"
+#include "Point_set_demo_types.h"
+
+#include "Polyhedron_demo_io_plugin_interface.h"
+#include <fstream>
+
+class Point_set_demo_xyz_plugin :
+  public QObject,
+  public Polyhedron_demo_io_plugin_interface
+{
+  Q_OBJECT
+  Q_INTERFACES(Polyhedron_demo_io_plugin_interface);
+
+public:
+  QStringList nameFilters() const;
+  bool canLoad() const;
+  Scene_item* load(QFileInfo fileinfo);
+
+  bool canSave(const Scene_item*);
+  bool save(const Scene_item*, QFileInfo fileinfo);
+};
+
+QStringList Point_set_demo_xyz_plugin::nameFilters() const {
+  return QStringList() << "XYZ files (*.xyz)"
+                       << "Point Sets with Normal (*.pwn)";
+};
+
+bool Point_set_demo_xyz_plugin::canLoad() const {
+  return true;
+}
+
+
+Scene_item* 
+Point_set_demo_xyz_plugin::load(QFileInfo fileinfo) {
+
+  // Open file
+  std::ifstream in(fileinfo.filePath().toUtf8());
+  if(!in) {
+    std::cerr << "Error! Cannot open file " << (const char*)fileinfo.filePath().toUtf8() << std::endl;
+    return NULL;
+  }
+
+  // Try to read .xyz in a point set
+  Point_set_scene_item* point_set_item = new Point_set_scene_item;
+  point_set_item->setName(fileinfo.baseName());
+  if(!point_set_item->read_xyz_point_set(in)) {
+    delete point_set_item;
+    return NULL;
+  }
+  return point_set_item;
+}
+
+bool Point_set_demo_xyz_plugin::canSave(const Scene_item* item)
+{
+  // This plugin supports point sets
+  return qobject_cast<const Point_set_scene_item*>(item);
+}
+
+bool Point_set_demo_xyz_plugin::save(const Scene_item* item, QFileInfo fileinfo)
+{
+  // This plugin supports point sets
+  const Point_set_scene_item* point_set_item = 
+    qobject_cast<const Point_set_scene_item*>(item);
+  if(!point_set_item)
+    return false;
+
+  std::ofstream out(fileinfo.filePath().toUtf8());
+
+  return point_set_item->write_xyz_point_set(out);
+}
+
+#include <QtPlugin>
+Q_EXPORT_PLUGIN2(Point_set_demo_xyz_plugin, Point_set_demo_xyz_plugin);
+#include "Point_set_demo_xyz_plugin.moc"

Surface_reconstruction_points_3/demo/Surface_reconstruction_points_3/Point_set_demo/Point_set_scene_item.cpp

@@ -38,31 +38,39 @@ Point_set_scene_item::clone() const
 }
 
 // Load point set from .OFF file
-bool Point_set_scene_item::read_off_point_set(std::istream& stream)
+bool 
+Point_set_scene_item::read_off_point_set(std::istream& in)
 {
   m_points.clear();
-  return CGAL::read_off_point_set(stream, std::back_inserter(m_points));
+  return in &&
+         CGAL::read_off_point_set(in, std::back_inserter(m_points)) &&
+         !isEmpty();
 }
 
 // Write point set to .OFF file
-bool Point_set_scene_item::write_off_point_set(std::ostream& stream) const
+bool 
+Point_set_scene_item::write_off_point_set(std::ostream& out) const
 {
-  return stream && 
-         CGAL::write_off_point_set(stream, m_points.begin(), m_points.end());
+  return out && !isEmpty() && 
+         CGAL::write_off_point_set(out, m_points.begin(), m_points.end());
 }
 
 // Load point set from .XYZ file
-bool Point_set_scene_item::read_xyz_point_set(std::istream& stream)
+bool 
+Point_set_scene_item::read_xyz_point_set(std::istream& in)
 {
   m_points.clear();
-  return CGAL::read_xyz_point_set(stream, std::back_inserter(m_points));
+  return in &&
+         CGAL::read_xyz_point_set(in, std::back_inserter(m_points)) && 
+         !isEmpty();
 }
 
 // Write point set to .XYZ file
-bool Point_set_scene_item::write_xyz_point_set(std::ostream& stream) const
+bool 
+Point_set_scene_item::write_xyz_point_set(std::ostream& out) const
 {
-  return stream && 
-         CGAL::write_xyz_point_set(stream, m_points.begin(), m_points.end());
+  return out && !isEmpty() && 
+         CGAL::write_xyz_point_set(out, m_points.begin(), m_points.end());
 }
 
 QString 

Surface_reconstruction_points_3/demo/Surface_reconstruction_points_3/Point_set_demo/Scene_polyhedron_item.cpp

@@ -39,6 +39,7 @@ Scene_polyhedron_item::clone() const {
   return new Scene_polyhedron_item(*poly);
 }
 
+// Load polyhedron from .OFF file
 bool
 Scene_polyhedron_item::load(std::istream& in)
 {
@@ -46,9 +47,12 @@ Scene_polyhedron_item::load(std::istream& in)
   return in && !isEmpty();
 }
 
+// Write polyhedron to .OFF file
 bool 
 Scene_polyhedron_item::save(std::ostream& out) const
 {
+  if (isEmpty())
+    return false;
   out << *poly;
   return out;
 }

Surface_reconstruction_points_3/demo/Surface_reconstruction_points_3/Point_set_demo/include/UI_point_3.h

@@ -15,7 +15,6 @@
 /// It contains:
 /// - a position,
 /// - a normal (oriented or not),
-/// - an original normal (optional, always oriented),
 /// - a selection flag.
 ///
 /// @heading Is Model for the Concepts:
@@ -89,21 +88,18 @@ public:
     : Base(upt)
     {
       m_is_selected = upt.m_is_selected;
-      m_original_normal = upt.m_original_normal;
     }
     template<class K>
     UI_point_3(const UI_point_3<K>& upt)
     : Base(upt)
     {
       m_is_selected = upt.is_selected();
-      m_original_normal = upt.m_original_normal;
     }
     /// Operator =()
     UI_point_3& operator=(const UI_point_3& upt)
     {
       Base::operator=(upt);
       m_is_selected = upt.m_is_selected;
-      m_original_normal = upt.m_original_normal;
       return *this;
     }
 
@@ -113,18 +109,11 @@ public:
     bool is_selected() const { return m_is_selected; }
     void select(bool is_selected=true) { m_is_selected = is_selected; }
 
-    /// Get/set *original* normal.
-    const Vector_3& original_normal() const { return m_original_normal; }
-    Vector_3&       original_normal()       { return m_original_normal; }
-
 // Data
 private:
 
     // Selection flag.
     bool m_is_selected;
-
-    /// *Original* normal.
-    Vector_3  m_original_normal;
 };
 
 

Surface_reconstruction_points_3/demo/Surface_reconstruction_points_3/poisson/include/Point_set_3.h

@@ -55,8 +55,8 @@ public:
 
   // Repeat base class' types
   /// @cond SKIP_IN_MANUAL
-  using Base::iterator;
-  using Base::const_iterator;
+  typedef typename Base::iterator iterator;
+  typedef typename Base::const_iterator const_iterator;
   /// @endcond
 
   // Classic CGAL geometric types
@@ -77,8 +77,8 @@ public:
   typedef typename UI_point::Normal Normal; ///< Model of OrientableNormal_3 concept.
 
   // Iterator over Point_3 points
-  typedef std::deque<UI_point>::iterator        Point_iterator;      
-  typedef std::deque<UI_point>::const_iterator  Point_const_iterator;      
+  typedef typename std::deque<UI_point>::iterator        Point_iterator;
+  typedef typename std::deque<UI_point>::const_iterator  Point_const_iterator;
 
   // Iterator over normals
   typedef CGAL::Iterator_project<iterator, 

Surface_reconstruction_points_3/demo/Surface_reconstruction_points_3/poisson/include/UI_point_3.h

@@ -80,7 +80,7 @@ public:
       m_is_selected = false;
     }
     template <class K, class N>
-    UI_point_3(const Point_with_normal_3<K,N>& pwn)
+    UI_point_3(const CGAL::Point_with_normal_3<K,N>& pwn)
     : Base(pwn)
     {
       m_is_selected = false;
@@ -110,32 +110,32 @@ public:
     }
 
     /// Copy constructor
-    UI_point_3(const UI_point_3& gpt)
-    : Base(gpt)
+    UI_point_3(const UI_point_3& upt)
+    : Base(upt)
     {
-      m_is_selected = gpt.m_is_selected;
-      m_original_normal = gpt.m_original_normal;
+      m_is_selected = upt.m_is_selected;
+      m_original_normal = upt.m_original_normal;
     }
     template<class K>
-    UI_point_3(const UI_point_3<K>& gpt)
-    : Base(gpt)
+    UI_point_3(const UI_point_3<K>& upt)
+    : Base(upt)
     {
-      m_is_selected = gpt.is_selected();
-      m_original_normal = gpt.m_original_normal;
+      m_is_selected = upt.is_selected();
+      m_original_normal = upt.m_original_normal;
     }
     /// Operator =()
-    UI_point_3& operator=(const UI_point_3& gpt)
+    UI_point_3& operator=(const UI_point_3& upt)
     {
-      Base::operator=(gpt);
-      m_is_selected = gpt.m_is_selected;
-      m_original_normal = gpt.m_original_normal;
+      Base::operator=(upt);
+      m_is_selected = upt.m_is_selected;
+      m_original_normal = upt.m_original_normal;
       return *this;
     }
 
     /// Merge points, including lists of camera/2D point pairs.
-    void merge(const UI_point_3& gpt)
+    void merge(const UI_point_3& upt)
     { 
-      Base::merge(gpt); 
+      Base::merge(upt); 
     }
 
     // Inherited operators ==() and !=() are fine.