trianglemesherinterface.h

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/*
 *
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 *
 *
 *             OOFEM : Object Oriented Finite Element Code
 *
 *               Copyright (C) 1993 - 2025   Borek Patzak
 *
 *
 *
 *       Czech Technical University, Faculty of Civil Engineering,
 *   Department of Structural Mechanics, 166 29 Prague, Czech Republic
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This program 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
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
 */
 
#ifndef trianglemesherinterface_h
#define trianglemesherinterface_h
 
#include "floatarray.h"
#include "intarray.h"
#include "oofemenv.h"
 
#include <vector>
 
namespace oofem {
struct Triangle_PSLG
{
    FloatArray nx; 
    FloatArray ny; 
    IntArray segment_a; 
    IntArray segment_b; 
    IntArray segment_marker; 
};

class OOFEM_EXPORT TriangleMesherInterface
{
protected:
    double minAngle;
    double maxArea;
    bool useRegions;
    bool quadratic;
 
public:
    TriangleMesherInterface(double minAngle, double maxArea, bool quadratic) :
        minAngle(minAngle), maxArea(maxArea), quadratic(quadratic) { }

    ~TriangleMesherInterface() { }

    static void simplifyPSLG(Triangle_PSLG &coarse, const Triangle_PSLG &pslg, double limit, double minlen = 0.0);

    bool meshPSLG(const Triangle_PSLG &pslg,
                  const IntArray &outside, const IntArray &inside,
                  std :: vector< FloatArray > &nodes, std :: vector< IntArray > &n_markers,
                  std :: vector< IntArray > &triangles, IntArray &t_markers,
                  std :: vector< IntArray > &segments, IntArray &s_markers) const;
 
protected:
    static void fixNodeMarkers(const std :: vector< FloatArray > &nodes, std :: vector< IntArray > &n_markers,
                               const std :: vector< IntArray > &triangles, const IntArray &t_markers,
                               const std :: vector< IntArray > &segments, const IntArray &s_markers);
};
} // end namespace oofem
#endif // trianglemesherinterface_h