--- /dev/null
+// Copyright (C) 2007-2012 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.
+//
+// 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_Quadtree : Quartree implementation
+// File : SMESH_Quadtree.cxx
+// Module : SMESH
+//
+#include "SMESH_Quadtree.hxx"
+
+//===========================================================================
+/*!
+ * Constructor. limit must be provided at tree root construction.
+ * limit will be deleted by SMESH_Quadtree.
+ */
+//===========================================================================
+
+SMESH_Quadtree::SMESH_Quadtree (SMESH_TreeLimit* limit): TBaseTree( limit )
+{
+}
+
+//=================================================================
+/*!
+ * \brief Allocate a bndbox according to childIndex. childIndex is zero based
+ */
+//=================================================================
+
+Bnd_B2d* SMESH_Quadtree::newChildBox(int childIndex) const
+{
+ gp_XY min = getBox()->CornerMin();
+ gp_XY max = getBox()->CornerMax();
+ gp_XY HSize = (max - min)/2.;
+ gp_XY childHsize = HSize/2.;
+
+ gp_XY minChild( min.X() + childIndex%2 * HSize.X(),
+ min.Y() + ( childIndex<2 ) * HSize.Y());
+
+ return new Bnd_B2d(minChild+childHsize,childHsize);
+}
+
+//===========================================================================
+/*!
+ * \brief Compute the bigger dimension of my box
+ */
+//===========================================================================
+
+double SMESH_Quadtree::maxSize() const
+{
+ if ( getBox() && !getBox()->IsVoid() )
+ {
+ gp_XY min = getBox()->CornerMin();
+ gp_XY max = getBox()->CornerMax();
+ gp_XY Size = (max - min);
+ double returnVal = (Size.X()>Size.Y())?Size.X():Size.Y();
+ return returnVal;
+ }
+ return 0.;
+}
