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https://git.salome-platform.org/gitpub/modules/smesh.git
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94 lines
3.1 KiB
C++
94 lines
3.1 KiB
C++
// Copyright (C) 2007-2016 CEA/DEN, EDF R&D, OPEN CASCADE
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//
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// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
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// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Lesser General Public
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// License as published by the Free Software Foundation; either
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// version 2.1 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Lesser General Public License for more details.
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//
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// You should have received a copy of the GNU Lesser General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
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//
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// SMESH_Quadtree : Quartree implementation
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// File : SMESH_Quadtree.cxx
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// Module : SMESH
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//
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#include "SMESH_Quadtree.hxx"
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//===========================================================================
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/*!
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* Constructor. limit must be provided at tree root construction.
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* limit will be deleted by SMESH_Quadtree.
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*/
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//===========================================================================
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SMESH_Quadtree::SMESH_Quadtree (SMESH_TreeLimit* limit): TBaseTree( limit )
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{
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}
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//=================================================================
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/*!
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* \brief Allocate a bndbox according to childIndex. childIndex is zero based
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*/
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//=================================================================
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Bnd_B2d* SMESH_Quadtree::newChildBox(int childIndex) const
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{
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gp_XY min = getBox()->CornerMin();
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gp_XY max = getBox()->CornerMax();
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gp_XY HSize = (max - min)/2.;
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gp_XY childHsize = HSize/2.;
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gp_XY minChild( min.X() + childIndex%2 * HSize.X(),
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min.Y() + ( childIndex<2 ) * HSize.Y());
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return new Bnd_B2d(minChild+childHsize,childHsize);
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}
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//===========================================================================
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/*!
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* \brief Compute the bigger dimension of my box
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*/
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//===========================================================================
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double SMESH_Quadtree::maxSize() const
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{
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if ( getBox() && !getBox()->IsVoid() )
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{
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gp_XY min = getBox()->CornerMin();
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gp_XY max = getBox()->CornerMax();
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gp_XY Size = (max - min);
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double returnVal = (Size.X()>Size.Y())?Size.X():Size.Y();
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return returnVal;
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}
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return 0.;
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}
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//================================================================================
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/*!
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* \brief Change size of a box by a factor; each dimension changes independently of others
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*/
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//================================================================================
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void SMESH_Quadtree::enlargeByFactor( Bnd_B2d* box, double factor ) const
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{
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if ( !box->IsVoid() )
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{
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gp_XY halfSize = 0.5 * ( box->CornerMax() - box->CornerMin() );
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for ( int iDim = 1; iDim <= 2; ++iDim )
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halfSize.SetCoord( iDim, factor * halfSize.Coord( iDim ));
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box->SetHSize( halfSize );
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}
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}
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