--- /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>
+//
+
+#ifndef GeomAlgoAPI_NExplode_H_
+#define GeomAlgoAPI_NExplode_H_
+
+#include "GeomAlgoAPI.h"
+
+#include <GeomAPI_Shape.h>
+
+/// \class GeomAlgoAPI_NExplode
+/// \ingroup DataAlgo
+/// \brief Sort shapes by their centers of mass, using formula X*999 + Y*99 + Z*0.9.
+/// Algorithm is copied from GEOM module, which uses nexplode Draw command from OCCT.
+/// Used for getting index of sub0shape in WeakNaming algorithm.
+class GeomAlgoAPI_NExplode
+{
+ public:
+ /// \brief Initializes the sorted list of shapes by the context shape and type of sub-shapes.
+ GEOMALGOAPI_EXPORT GeomAlgoAPI_NExplode(
+ const GeomShapePtr theContext, const GeomAPI_Shape::ShapeType theShapeType);
+
+ /// Returns an index (started from one) of sub-shape in the sorted list. Returns 0 if not found.
+ GEOMALGOAPI_EXPORT int index(const GeomShapePtr theSubShape);
+ /// Returns a shape by an index (started from one). Returns null if not found.
+ GEOMALGOAPI_EXPORT GeomShapePtr shape(const int theIndex);
+
+protected:
+ ListOfShape mySorted;
+};
+
+#endif
