meshOctreeModifierReduceMemoryConsumption.C

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/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | cfMesh: A library for mesh generation
   \\    /   O peration     |
    \\  /    A nd           | Author: Franjo Juretic (franjo.juretic@c-fields.com)
     \\/     M anipulation  | Copyright (C) Creative Fields, Ltd.
-------------------------------------------------------------------------------
License
    This file is part of cfMesh.
 
    cfMesh is free software; you can redistribute it and/or modify it
    under the terms of the GNU General Public License as published by the
    Free Software Foundation; either version 3 of the License, or (at your
    option) any later version.
 
    cfMesh 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 General Public License
    for more details.
 
    You should have received a copy of the GNU General Public License
    along with cfMesh.  If not, see <http://www.gnu.org/licenses/>.
 
Description
 
\*---------------------------------------------------------------------------*/
 
#include "meshOctreeModifier.H"
#include "triSurf.H"
#include "demandDrivenData.H"
 
// #define DEBUGSearch
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
namespace Foam
{
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
void meshOctreeModifier::reduceMemoryConsumption()
{
    //createListOfLeaves();
 
    const LongList<meshOctreeCube*>& leaves = octree_.leaves_;
 
    forAll(octree_.dataSlots_, slotI)
    {
        //- deleting triangles
        VRWGraph& containedTriangles =
            octree_.dataSlots_[slotI].containedTriangles_;
        label nElmts = containedTriangles.size();
        boolList mayDeleteData(nElmts, true);
        forAll(leaves, leafI)
        {
            const meshOctreeCube& oc = *leaves[leafI];
 
            if(
                oc.hasContainedElements() &&
                oc.slotPtr() == &octree_.dataSlots_[slotI]
            )
                mayDeleteData[oc.containedElements()] = false;
        }
 
        for(label i=0;i<nElmts;++i)
            if( mayDeleteData[i] )
                containedTriangles.setRowSize(i, 0);
        containedTriangles.optimizeMemoryUsage();
 
        //- deleting edges
        VRWGraph& containedEdges =
            octree_.dataSlots_[slotI].containedEdges_;
        nElmts = containedEdges.size();
        mayDeleteData.setSize(nElmts);
        mayDeleteData = true;
        forAll(leaves, leafI)
        {
            const meshOctreeCube& oc = *leaves[leafI];
 
            if(
                oc.hasContainedEdges() &&
                oc.slotPtr() == &octree_.dataSlots_[slotI]
            )
                mayDeleteData[oc.containedEdges()] = false;
        }
 
        for(label i=0;i<nElmts;++i)
            if( mayDeleteData[i] )
                containedEdges.setRowSize(i, 0);
 
        containedEdges.optimizeMemoryUsage();
    }
}
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
} // End namespace Foam
 
// ************************************************************************* //