face_inf_quad.C

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// The libMesh Finite Element Library.
// Copyright (C) 2002-2019 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
 
// 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 library 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
 
// Local includes
#include "libmesh/libmesh_config.h"
#ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
 
// Local includes cont'd
#include "libmesh/face_inf_quad.h"
#include "libmesh/edge_edge2.h"
#include "libmesh/edge_inf_edge2.h"
#include "libmesh/face_inf_quad4.h"
#include "libmesh/enum_elem_quality.h"
 
namespace libMesh
{
 
 
// ------------------------------------------------------------
// InfQuad class static member initializations
 
 
// We need to require C++11...
const Real InfQuad::_master_points[6][3] =
  {
    {-1, 0},
    {1, 0},
    {-1, 1},
    {1, 1},
    {0, 0},
    {0, 1}
  };
 
 
// ------------------------------------------------------------
// InfQuad class member functions
dof_id_type InfQuad::key (const unsigned int s) const
{
  libmesh_assert_less (s, this->n_sides());
 
  // The order of the node ids does not matter, they are sorted by the
  // compute_key() function.
  return this->compute_key(this->node_id(InfQuad4::side_nodes_map[s][0]),
                           this->node_id(InfQuad4::side_nodes_map[s][1]));
}
 
 
 
unsigned int InfQuad::which_node_am_i(unsigned int side,
                                      unsigned int side_node) const
{
  libmesh_assert_less (side, this->n_sides());
  libmesh_assert_less (side_node, 2);
 
  return InfQuad4::side_nodes_map[side][side_node];
}
 
 
 
std::unique_ptr<Elem> InfQuad::side_ptr (const unsigned int i)
{
  libmesh_assert_less (i, this->n_sides());
 
  // Return value
  std::unique_ptr<Elem> edge;
 
  switch (i)
    {
    case 0: // base face
      {
        edge = libmesh_make_unique<Edge2>();
        break;
      }
 
    case 1: // adjacent to another infinite element
    case 2: // adjacent to another infinite element
      {
        edge = libmesh_make_unique<InfEdge2>();
        break;
      }
 
    default:
      libmesh_error_msg("Invalid side i = " << i);
    }
 
  // Set the nodes
  for (auto n : edge->node_index_range())
    edge->set_node(n) = this->node_ptr(InfQuad4::side_nodes_map[i][n]);
 
  return edge;
}
 
 
 
void InfQuad::side_ptr (std::unique_ptr<Elem> & side,
                        const unsigned int i)
{
  libmesh_assert_less (i, this->n_sides());
 
  switch (i)
    {
      // the base face
    case 0:
      {
        if (!side.get() || side->type() != EDGE2)
          {
            side = this->side_ptr(i);
            return;
          }
        break;
      }
 
      // connecting to another infinite element
    case 1:
    case 2:
      {
        if (!side.get() || side->type() != INFEDGE2)
          {
            side = this->side_ptr(i);
            return;
          }
        break;
      }
 
    default:
      libmesh_error_msg("Invalid side i = " << i);
    }
 
  side->subdomain_id() = this->subdomain_id();
 
  // Set the nodes
  for (auto n : side->node_index_range())
    side->set_node(n) = this->node_ptr(InfQuad4::side_nodes_map[i][n]);
}
 
 
bool InfQuad::is_child_on_side(const unsigned int c,
                               const unsigned int s) const
{
  libmesh_assert_less (c, this->n_children());
  libmesh_assert_less (s, this->n_sides());
 
  return (s == 0 || s == c+1);
}
 
 
 
Real InfQuad::quality (const ElemQuality) const
{
  return 0.; // Not implemented
}
 
 
 
 
std::pair<Real, Real> InfQuad::qual_bounds (const ElemQuality q) const
{
  std::pair<Real, Real> bounds;
 
  switch (q)
    {
 
    case ASPECT_RATIO:
      bounds.first  = 1.;
      bounds.second = 4.;
      break;
 
    case SKEW:
      bounds.first  = 0.;
      bounds.second = 0.5;
      break;
 
    case TAPER:
      bounds.first  = 0.;
      bounds.second = 0.7;
      break;
 
    case WARP:
      bounds.first  = 0.9;
      bounds.second = 1.;
      break;
 
    case STRETCH:
      bounds.first  = 0.25;
      bounds.second = 1.;
      break;
 
    case MIN_ANGLE:
      bounds.first  = 45.;
      bounds.second = 90.;
      break;
 
    case MAX_ANGLE:
      bounds.first  = 90.;
      bounds.second = 135.;
      break;
 
    case CONDITION:
      bounds.first  = 1.;
      bounds.second = 4.;
      break;
 
    case JACOBIAN:
      bounds.first  = 0.5;
      bounds.second = 1.;
      break;
 
    case SHEAR:
    case SHAPE:
    case SIZE:
      bounds.first  = 0.3;
      bounds.second = 1.;
      break;
 
    case DISTORTION:
      bounds.first  = 0.6;
      bounds.second = 1.;
      break;
 
    default:
      libMesh::out << "Warning: Invalid quality measure chosen." << std::endl;
      bounds.first  = -1;
      bounds.second = -1;
    }
 
  return bounds;
}
 
} // namespace libMesh
 
 
 
#endif // ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS