1 // Copyright (C) 2007-2014 CEA/DEN, EDF R&D, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 // HYDROData_Quadtree : Quadtree implementation (from SMESH module)
24 // File : HYDROData_Quadtree.hxx
27 #ifndef _HYDROData_Quadtree_HXX_
28 #define _HYDROData_Quadtree_HXX_
30 #include <Standard.hxx>
31 #include <Standard_Macro.hxx>
33 #include "HYDROData_Tree.hxx"
34 #include <Bnd_B2d.hxx>
36 //================================================================================
39 * \brief 2D tree of anything.
40 * Methods to implement in a descendant are:
41 * - Bnd_B2d* buildRootBox(); // box of the whole tree
42 * - descendant* newChild() const; // a new child instance
43 * - void buildChildrenData(); // Fill in data of the children
45 class Standard_EXPORT HYDROData_Quadtree: public HYDROData_Tree<Bnd_B2d, 4>
48 typedef HYDROData_Tree<Bnd_B2d, 4> TBaseTree;
50 //! Constructor. limit must be provided at tree root construction.
51 //! limit will be deleted by HYDROData_Quadtree
52 HYDROData_Quadtree(HYDROData_TreeLimit* limit = 0);
54 //! Compute the biggest dimension of my box
55 double maxSize() const;
57 //! Return index of a child the given point is in
58 inline int getChildIndex(double x, double y, const gp_XY& boxMiddle) const
60 return (x > boxMiddle.X()) + (y > boxMiddle.Y()) * 2;
65 //! Allocate a bndbox according to childIndex. childIndex is zero based
66 virtual Bnd_B2d* newChildBox(int childIndex) const;