1 // Copyright (C) 2007-2020 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 // SMESH_Quadtree : Quartree implementation
24 // File : SMESH_Quadtree.hxx
27 #ifndef _SMESH_Quadtree_HXX_
28 #define _SMESH_Quadtree_HXX_
30 #include "SMESH_Utils.hxx"
31 #include "SMESH_Tree.hxx"
32 #include <Bnd_B2d.hxx>
35 * \brief 2D tree of anything.
36 * Methods to implement in a descendant are:
37 * - Bnd_B2d* buildRootBox(); // box of the whole tree
38 * - descendant* newChild() const; // a new child instance
39 * - void buildChildrenData(); // Fill in data of the children
41 class SMESHUtils_EXPORT SMESH_Quadtree : public SMESH_Tree< Bnd_B2d, 4 >
44 typedef SMESH_Tree< Bnd_B2d, 4> TBaseTree;
46 // Constructor. limit must be provided at tree root construction.
47 // limit will be deleted by SMESH_Quadtree
48 SMESH_Quadtree (SMESH_TreeLimit* limit=0);
50 // Compute the bigger dimension of my box
51 double maxSize() const;
53 // Return index of a child the given point is in
54 //inline int getChildIndex(double x, double y, const gp_XY& boxMiddle)const;
58 // Allocate a bndbox according to childIndex. childIndex is zero based
59 virtual Bnd_B2d* newChildBox(int childIndex) const;
61 // Change size of a box by a factor; each dimension changes independently of others
62 virtual void enlargeByFactor( Bnd_B2d* box, double factor ) const;
65 //================================================================================
67 * \brief Return index of a child the given point is in
69 //================================================================================
71 // inline int SMESH_Quadtree::getChildIndex(double x, double y, const gp_XY& mid) const
73 // return (x > mid.X()) + ( y > mid.Y())*2 + (z > mid.Z())*4;