--- /dev/null
+// Copyright (C) 2017 CEA/DEN, EDF R&D
+//
+// This library is free software; you can redistribute it and/or
+// modify it under the terms of the GNU Lesser General Public
+// License as published by the Free Software Foundation; either
+// version 2.1 of the License, or (at your option) any later version.
+//
+// This library 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
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or
+// email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
+//
+
+// File: PartSet_ExternalPointsMgr.h
+// Created: 26 April 2017
+// Author: Vitaly SMETANNIKOV
+
+#ifndef PartSet_ExternalPointsMgr_H
+#define PartSet_ExternalPointsMgr_H
+
+
+#include <ModelAPI_CompositeFeature.h>
+#include <ModelAPI_Result.h>
+#include <GeomAPI_Pln.h>
+#include <GeomAPI_AISObject.h>
+
+#include <QObject>
+#include <QMap>
+
+class ModuleBase_ViewerPrs;
+class ModuleBase_IWorkshop;
+
+
+/**
+* \ingroup Modules
+* A class to manage display of presentations of center points of circular
+* edges outside of a current sketcher
+*/
+class PartSet_ExternalPointsMgr: public QObject
+{
+ Q_OBJECT
+public:
+ PartSet_ExternalPointsMgr(ModuleBase_IWorkshop* theWorkshop,
+ const CompositeFeaturePtr& theSketch);
+
+ virtual ~PartSet_ExternalPointsMgr();
+
+public slots:
+ /**
+ * A slot which processes display of object
+ * \param theObj the displayed object
+ * \param theAIS its presentation
+ */
+ void onDisplayObject(ObjectPtr theObj, AISObjectPtr theAIS);
+
+ /**
+ * A slot which processes erase of object
+ * \param theObj the displayed object
+ * \param theAIS its presentation
+ */
+ void onEraseObject(ObjectPtr theObj, AISObjectPtr theAIS);
+
+ // Called on selection changed
+ void onSelectionChanged();
+
+private:
+ /**
+ * Returns list of presentations which have displayed shapes with circular edges
+ * (circles, arcs) which are in pane of of the given sketch
+ * \param theSketch - the sketch
+ */
+ QList<std::shared_ptr<ModuleBase_ViewerPrs>> findCircularEdgesInPlane();
+
+ /// Creates presentations of centers
+ void updateCenterPresentations();
+
+ /// Returns plane of the current sketch
+ GeomPlanePtr plane() const;
+
+ /**
+ * Checks that the given object is an object of the current sketch
+ * \param theRes an object to check
+ * \return True if the given object is a sub-object of the current sketch
+ */
+ bool isSketchObject(const ObjectPtr& theRes) const;
+
+private:
+ /// Workshop
+ ModuleBase_IWorkshop* myWorkshop;
+
+ /// Current sketch
+ CompositeFeaturePtr mySketch;
+
+ /// Type for list of created AIS objects
+ typedef QList<AISObjectPtr> ListOfAIS;
+
+ /// Map of created AIS objects
+ QMap<ObjectPtr, ListOfAIS> myPresentations;
+};
+
+#endif
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