surfaceRefineRedGreen.C

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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.
 
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    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/>.
 
Application
    surfaceRefineRedGreen
 
Description
    Refine by splitting all three edges of triangle ('red' refinement).
    Neighbouring triangles (which are not marked for refinement get split
    in half ('green' refinement). (R. Verfuerth, "A review of a posteriori
    error estimation and adaptive mesh refinement techniques",
    Wiley-Teubner, 1996)
 
\*---------------------------------------------------------------------------*/
 
#include "triSurface.H"
#include "triSurfaceTools.H"
#include "argList.H"
#include "OFstream.H"
 
using namespace Foam;
 
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
 
int main(int argc, char *argv[])
{
    #include "removeCaseOptions.H"
 
    argList::validArgs.append("surface file");
    argList::validArgs.append("output surface file");
    argList args(argc, argv);
 
    const fileName surfFileName = args[1];
    const fileName outFileName  = args[2];
 
    Info<< "Reading surface from " << surfFileName << " ..." << endl;
 
    triSurface surf1(surfFileName);
 
    // Refine
    triSurface surf2 = triSurfaceTools::redGreenRefine
    (
        surf1,
        identityMap(surf1.size())  // Hack: refine all
    );
 
    Info<< "Original surface:" << endl
        << "    triangles     :" << surf1.size() << endl
        << "    vertices(used):" << surf1.nPoints() << endl
        << "Refined surface:" << endl
        << "    triangles     :" << surf2.size() << endl
        << "    vertices(used):" << surf2.nPoints() << endl << endl;
 
 
    Info<< "Writing refined surface to " << outFileName << " ..." << endl;
 
    surf2.write(outFileName);
 
    Info<< "End\n" << endl;
 
    return 0;
}
 
 
// ************************************************************************* //