GMSHInterface.h

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// SPDX-FileCopyrightText: Copyright (c) OpenGeoSys Community (opengeosys.org)
// SPDX-License-Identifier: BSD-3-Clause
 
#pragma once
 
#include <iosfwd>
#include <list>
#include <memory>
#include <string>
#include <vector>
 
#include "Applications/FileIO/Gmsh/GMSHPoint.h"
#include "BaseLib/IO/Writer.h"
 
namespace GeoLib
{
class GEOObjects;
class Polygon;
}
 
namespace FileIO
{
 
namespace GMSH
{
 
class GMSHPolygonTree;
class GMSHMeshDensityStrategy;
 
enum class MeshDensityAlgorithm {
    FixedMeshDensity, 
    AdaptiveMeshDensity 
};

class GMSHInterface final : public BaseLib::IO::Writer
{
public:
    GMSHInterface(GeoLib::GEOObjects& geo_objs,
                  bool include_stations_as_constraints,
                  GMSH::MeshDensityAlgorithm mesh_density_algorithm,
                  double pnt_density, double station_density,
                  std::size_t max_pnts_per_leaf,
                  std::vector<std::string> const& selected_geometries,
                  bool rotate, bool keep_preprocessed_geometry);
 
    GMSHInterface(GMSHInterface const&) = delete;
    GMSHInterface(GMSHInterface &&) = delete;
    GMSHInterface& operator=(GMSHInterface const&) = delete;
    GMSHInterface& operator=(GMSHInterface &&) = delete;
 
    ~GMSHInterface() override;
 
    void writePhysicalGroups(bool flag) { _write_physical_groups = flag; }
 
protected:
    bool write() override;
 
private:
    int writeGMSHInputFile(std::ostream & out);
 
    std::size_t _n_lines;
    std::size_t _n_plane_sfc;
 
    GeoLib::GEOObjects & _geo_objs;
    std::vector<std::string> const& _selected_geometries;
    std::string _gmsh_geo_name;
    std::list<GMSH::GMSHPolygonTree*> _polygon_tree_list;
 
    std::vector<GMSH::GMSHPoint*> _gmsh_pnts;
 
    std::unique_ptr<GMSH::GMSHMeshDensityStrategy> _mesh_density_strategy;
    Eigen::Matrix3d _inverse_rot_mat = Eigen::Matrix3d::Zero();
    bool const _rotate = false;
    bool _keep_preprocessed_geometry = true;
    bool _write_physical_groups = false;
};
} // end namespace GMSH
} // end namespace FileIO