openfoam/applications/test/findCell-octree/findCell-octree.C

99 lines
2.9 KiB
C

/*---------------------------------------------------------------------------*\
========= |
\\ / F ield | OpenFOAM: The Open Source CFD Toolbox
\\ / O peration |
\\ / A nd | Copyright (C) 1991-2010 OpenCFD Ltd.
\\/ M anipulation |
-------------------------------------------------------------------------------
License
This file is part of OpenFOAM.
OpenFOAM 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.
OpenFOAM 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 OpenFOAM. If not, see <http://www.gnu.org/licenses/>.
\*---------------------------------------------------------------------------*/
#include "argList.H"
#include "Time.H"
#include "fvMesh.H"
#include "IStringStream.H"
#include "octree.H"
#include "octreeDataCell.H"
#include "OFstream.H"
using namespace Foam;
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Main program:
int main(int argc, char *argv[])
{
argList::validArgs.append("point (x y z)");
# include "setRootCase.H"
# include "createTime.H"
# include "createMesh.H"
const point sample = args.argRead<point>(1);
treeBoundBox meshBb(mesh.points());
// Calculate typical cell releated size to shift bb by.
scalar typDim = meshBb.avgDim()/(2.0*Foam::cbrt(scalar(mesh.nCells())));
treeBoundBox shiftedBb
(
meshBb.min(),
meshBb.max() + vector(typDim, typDim, typDim)
);
Info<< "Mesh" << endl;
Info<< " bounding box : " << meshBb << endl;
Info<< " bounding box (shifted) : " << shiftedBb << endl;
Info<< " typical dimension : " << shiftedBb.typDim() << endl;
/*
* Now we have allBb and shiftedBb
*/
// Wrap indices and mesh information into helper object
octreeDataCell shapes(mesh);
octree<octreeDataCell> oc
(
shiftedBb, // overall bounding box
shapes, // all information needed to do checks on cells
1, // min. levels
10.0, // max. size of leaves
10.0 // maximum ratio of cubes v.s. cells
);
Info<< "Point:" << sample << " is in shape "
<< oc.find(sample) << nl
<< "Point:" << sample << " is in cell "
<< mesh.findCell(sample) << endl;
oc.printStats(Info);
Info<< "End\n" << endl;
return 0;
}
// ************************************************************************* //