--- /dev/null
+// Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
+//
+// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+//
+// 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
+//
+
+// SMESH SMDS : implementation of Salome mesh data structure
+// File : SMDS_QuadraticEdge.hxx
+// Module : SMESH
+//
+#ifndef _SMDS_QuadraticEdge_HeaderFile
+#define _SMDS_QuadraticEdge_HeaderFile
+
+#include "SMESH_SMDS.hxx"
+
+#include "SMDS_LinearEdge.hxx"
+#include <iostream>
+
+class SMDS_EXPORT SMDS_QuadraticEdge: public SMDS_LinearEdge
+{
+
+public:
+ SMDS_QuadraticEdge(const SMDS_MeshNode * node1,
+ const SMDS_MeshNode * node2,
+ const SMDS_MeshNode * node12);
+
+ bool ChangeNodes(const SMDS_MeshNode * node1,
+ const SMDS_MeshNode * node2,
+ const SMDS_MeshNode * node12);
+
+ void Print(std::ostream & OS) const;
+
+ int NbNodes() const;
+
+ virtual SMDSAbs_EntityType GetEntityType() const { return SMDSEntity_Quad_Edge; }
+
+ virtual bool IsQuadratic() const { return true; }
+
+ virtual bool IsMediumNode(const SMDS_MeshNode* node) const;
+
+ SMDS_NodeIteratorPtr interlacedNodesIterator() const;
+
+protected:
+ SMDS_ElemIteratorPtr
+ elementsIterator(SMDSAbs_ElementType type) const;
+
+};
+#endif