1 // Copyright (C) 2007-2013 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.
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 SMESH_Octree : Octree implementation
24 // File : SMESH_Octree.cxx
25 // Created : Tue Jan 16 16:00:00 2007
26 // Author : Nicolas Geimer & Aurélien Motteux(OCC)
29 #include "SMESH_Octree.hxx"
31 //===========================================================================
33 * Constructor. limit must be provided at tree root construction.
34 * limit will be deleted by SMESH_Octree.
36 //===========================================================================
38 SMESH_Octree::SMESH_Octree (SMESH_TreeLimit* limit): TBaseTree( limit )
42 //=================================================================
44 * \brief Allocate a bndbox according to childIndex. childIndex is zero based
46 //=================================================================
48 Bnd_B3d* SMESH_Octree::newChildBox(int childIndex) const
50 gp_XYZ min = getBox()->CornerMin();
51 gp_XYZ max = getBox()->CornerMax();
52 gp_XYZ HSize = (max - min)/2.;
53 gp_XYZ childHsize = HSize/2.;
55 gp_XYZ minChild( min.X() + childIndex%2 * HSize.X(),
56 min.Y() + (childIndex%4)/2 * HSize.Y(),
57 min.Z() + ( childIndex>=4 ) * HSize.Z());
59 return new Bnd_B3d(minChild+childHsize,childHsize);
62 //===========================================================================
64 * \brief Compute the bigger dimension of my box
66 //===========================================================================
68 double SMESH_Octree::maxSize() const
70 if ( getBox() && !getBox()->IsVoid() )
72 gp_XYZ min = getBox()->CornerMin();
73 gp_XYZ max = getBox()->CornerMax();
74 gp_XYZ Size = (max - min);
75 double returnVal = (Size.X()>Size.Y())?Size.X():Size.Y();
76 return (returnVal>Size.Z())?returnVal:Size.Z();