foam-extend4.1-coherent-io/applications/utilities/surface/surfaceRefineRedGreen/surfaceRefineRedGreen.C

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License
    This file is part of OpenFOAM.

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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;


// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //
// Main program:

int main(int argc, char *argv[])
{
    argList::noParallel();
    argList::validArgs.clear();
    argList::validArgs.append("surface file");
    argList::validArgs.append("output surface file");
    argList args(argc, argv);

    fileName surfFileName(args.additionalArgs()[0]);
    fileName outFileName(args.additionalArgs()[1]);

    Info<< "Reading surface from " << surfFileName << " ..." << endl;

    triSurface surf1(surfFileName);

    // Refine
    triSurface surf2 = triSurfaceTools::redGreenRefine
    (
        surf1,
        identity(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;
}


// ************************************************************************* //