triangle_scaffold_mesh.h

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// LIC// ====================================================================
// LIC// This file forms part of oomph-lib, the object-oriented,
// LIC// multi-physics finite-element library, available
// LIC// at http://www.oomph-lib.org.
// LIC//
// LIC// Copyright (C) 2006-2025 Matthias Heil and Andrew Hazel
// LIC//
// LIC// This library is free software; you can redistribute it and/or
// LIC// modify it under the terms of the GNU Lesser General Public
// LIC// License as published by the Free Software Foundation; either
// LIC// version 2.1 of the License, or (at your option) any later version.
// LIC//
// LIC// This library is distributed in the hope that it will be useful,
// LIC// but WITHOUT ANY WARRANTY; without even the implied warranty of
// LIC// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// LIC// Lesser General Public License for more details.
// LIC//
// LIC// You should have received a copy of the GNU Lesser General Public
// LIC// License along with this library; if not, write to the Free Software
// LIC// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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// LIC// The authors may be contacted at oomph-lib@maths.man.ac.uk.
// LIC//
// LIC//====================================================================
#ifndef OOMPH_TRIANGLE_SCAFFOLD_MESH_HEADER
#define OOMPH_TRIANGLE_SCAFFOLD_MESH_HEADER
 
// Config header
#ifdef HAVE_CONFIG_H
#include <oomph-lib-config.h>
#endif
 
#ifdef OOMPH_HAS_MPI
// mpi headers
#include "mpi.h"
#endif
 
 
#include "triangle_mesh.h"
#include "Telements.h"
 
 
namespace oomph
{
  //=====================================================================
  /// Triangle Mesh that is based on input files generated by the
  /// triangle mesh generator Triangle.
  //=====================================================================
  class TriangleScaffoldMesh : public virtual Mesh
  {
  public:
    /// Empty constructor
    TriangleScaffoldMesh() {}
 
    /// Constructor: Pass the filenames of the triangle files
    TriangleScaffoldMesh(const std::string& node_file_name,
                         const std::string& element_file_name,
                         const std::string& poly_file_name);
 
#ifdef OOMPH_HAS_TRIANGLE_LIB
 
    /// Constructor: Pass the TriangulateIO object
    TriangleScaffoldMesh(TriangulateIO& triangle_data);
 
#endif
 
    /// Broken copy constructor
    TriangleScaffoldMesh(const TriangleScaffoldMesh&) = delete;
 
    /// Broken assignment operator
    void operator=(const TriangleScaffoldMesh&) = delete;
 
    /// Empty destructor
    ~TriangleScaffoldMesh() {}
 
    /// Return the global node of each local node
    /// listed element-by-element e*n_local_node + n_local
    /// Note that the node numbers are indexed from 1
    unsigned global_node_number(const unsigned& i)
    {
      return Global_node[i];
    }
 
    /// Return the boundary id of the i-th edge in the e-th element:
    /// This is zero-based as in triangle. Zero means the edge is not
    /// on a boundary. Postive numbers identify the boundary.
    /// Will be reduced by one to identify the oomph-lib boundary.
    unsigned edge_boundary(const unsigned& e, const unsigned& i) const
    {
      return Edge_boundary[e][i];
    }
 
    /// Return the number of internal edges
    unsigned nglobal_edge()
    {
      return Nglobal_edge;
    }
 
    /// Return the global index of the i-th edge in the e-th element:
    /// The global index starts from zero
    unsigned edge_index(const unsigned& e, const unsigned& i) const
    {
      return Edge_index[e][i];
    }
 
    /// Return the attribute of the element e
    double element_attribute(const unsigned& e) const
    {
      return Element_attribute[e];
    }
 
    /// Vectors of hole centre coordinates
    Vector<Vector<double>>& internal_point()
    {
      return Hole_centre;
    }
 
  protected:
    /// Check mesh integrity -- performs some internal consistency checks
    /// and throws error if violated.
    void check_mesh_integrity();
 
    /// Number of internal edges
    unsigned Nglobal_edge;
 
    /// Storage for global node numbers listed element-by-element
    Vector<unsigned> Global_node;
 
    /// Vector of vectors containing the boundary ids of the
    /// elements' edges
    Vector<Vector<unsigned>> Edge_boundary;
 
    /// Vector of vectors containing the global edge index of
    // the elements' edges
    Vector<Vector<unsigned>> Edge_index;
 
    /// Vector of double attributes for each element
    Vector<double> Element_attribute;
 
    /// Vectors of hole centre coordinates
    Vector<Vector<double>> Hole_centre;
  };
 
} // namespace oomph
 
#endif