1
  2
  3
  4
  5
  6
  7
  8
  9
 10
 11
 12
 13
 14
 15
 16
 17
 18
 19
 20
 21
 22
 23
 24
 25
 26
 27
 28
 29
 30
 31
 32
 33
 34
 35
 36
 37
 38
 39
 40
 41
 42
 43
 44
 45
 46
 47
 48
 49
 50
 51
 52
 53
 54
 55
 56
 57
 58
 59
 60
 61
 62
 63
 64
 65
 66
 67
 68
 69
 70
 71
 72
 73
 74
 75
 76
 77
 78
 79
 80
 81
 82
 83
 84
 85
 86
 87
 88
 89
 90
 91
 92
 93
 94
 95
 96
 97
 98
 99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
// *****************************************************************************
/*!
  \file      src/IO/RDGFLOMeshReader.cpp
  \copyright 2012-2015 J. Bakosi,
             2016-2018 Los Alamos National Security, LLC.,
             2019-2021 Triad National Security, LLC.,
             2022-2025 J. Bakosi
             All rights reserved. See the LICENSE file for details.
  \brief     RDGFLO mesh reader class declaration
  \details   RDGFLO mesh reader class declaration. Mesh reader facilitating
             reading a mesh from a simple text file used by Prof. Hong Luo at
             North Carolina State University.
*/
// *****************************************************************************

#include <array><--- Include file:  not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <istream><--- Include file:  not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <string><--- Include file:  not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <vector><--- Include file:  not found. Please note: Cppcheck does not need standard library headers to get proper results.
#include <cstddef><--- Include file:  not found. Please note: Cppcheck does not need standard library headers to get proper results.

#include "Types.hpp"
#include "Exception.hpp"
#include "UnsMesh.hpp"<--- Include file: "UnsMesh.hpp" not found.
#include "Reorder.hpp"<--- Include file: "Reorder.hpp" not found.
#include "RDGFLOMeshReader.hpp"

using tk::RDGFLOMeshReader;

void
RDGFLOMeshReader::readHeader()
// *****************************************************************************
//  Read RDGFLO mesh header
// *****************************************************************************
{
  // read in header: "npoin, ntetr, npyra, npris, nhexa, ntria, nquad, time"
  std::string s;
  for (int i=0; i<8; ++i) m_inFile >> s;

  // number of points
  m_inFile >> m_nnode;

  // number of tetrahedra
  m_inFile >> m_ntet;
  if (m_ntet == 0) Throw( "No tetrahedra in input mesh" );

  // number of pyramids
  std::size_t npyra;
  m_inFile >> npyra;
  if (npyra > 0)
    Throw( "Pyramids not supported. Need a mesh with only tetrahedra." );

  // number of prisms
  std::size_t npris;
  m_inFile >> npris;
  if (npris > 0)
    Throw( "Prisms not supported. Need a mesh with only tetrahedra." );

  // number of hexahedra
  std::size_t nhexa;
  m_inFile >> nhexa;
  if (nhexa > 0)
    Throw( "Hexahedra not supported. Need a mesh with only tetrahedra." );

  // number of triangles
  m_inFile >> m_ntri;

  // number of quads
  std::size_t nquad;
  m_inFile >> nquad;
  if (nquad > 0)
    Throw( "Quads not supported. Need a mesh with only tetrahedra." );

  // time
  tk::real time;
  m_inFile >> time;
}

void
RDGFLOMeshReader::readMesh( UnsMesh& mesh )
// *****************************************************************************
//  Read RDGFLO mesh
//! \param[in] mesh Unstructured mesh object
// *****************************************************************************
{
  // Read header
  readHeader();
  // Read elements
  readElements( mesh );
  // Read nodes
  readNodes( mesh );
}

void
RDGFLOMeshReader::readNodes( UnsMesh& mesh )
// *****************************************************************************
//  Read nodes
//! \param[in] mesh Unstructured mesh object
// *****************************************************************************
{
  std::string s;

  std::getline( m_inFile, s );
  std::getline( m_inFile, s );
  Assert( s == " grid point coordinates",
          "Invalid keyword, expected: ' grid point coordinates'" );

  // Read in node coordinates: x-coord y-coord z-coord
  auto& xcoord = mesh.x();
  auto& ycoord = mesh.y();
  auto& zcoord = mesh.z();
  xcoord.resize( m_nnode );
  ycoord.resize( m_nnode );
  zcoord.resize( m_nnode );
  for (std::size_t i=0; i<m_nnode; ++i) {
    std::size_t id;
    tk::real x, y, z;
    m_inFile >> id >> x >> y >> z;
    --id;       // convert to zero-based node ids
    xcoord[ id ] = x;
    ycoord[ id ] = y;
    zcoord[ id ] = z;
  }
}

void
RDGFLOMeshReader::readElements( UnsMesh& mesh )
// *****************************************************************************
//  Read element connectivity
//! \param[in] mesh Unstructured mesh object
// *****************************************************************************
{
  std::string s;

  std::getline( m_inFile, s );
  std::getline( m_inFile, s );
  Assert( s == " element connectivity",
          "Invalid keyword, expected: ' element connectivity'" );

  // Read in tetrahedra element connectivity
  auto& tetinpoel = mesh.tetinpoel();
  tetinpoel.resize( m_ntet * 4 );
  for (std::size_t i=0; i<m_ntet; ++i) {
    std::size_t id;
    std::array< std::size_t, 4 > n;
    // ignore cell id, a, b
    m_inFile >> id >> n[0] >> n[1] >> n[2] >> n[3];
    --id;       // convert to zero-based element ids
    tetinpoel[ id*4+0 ] = n[0]-1;       // store zero-based node ids
    tetinpoel[ id*4+1 ] = n[1]-1;
    tetinpoel[ id*4+2 ] = n[2]-1;
    tetinpoel[ id*4+3 ] = n[3]-1;
  }

  if (!m_ntri) return;

  std::getline( m_inFile, s );
  std::getline( m_inFile, s );
  Assert( s == " boundary conditions & connectivity for boundary faces",
          "Invalid keyword, expected: ' boundary conditions & connectivity "
          "for boundary faces'" );

  // Read in triangle element connectivity and side set ids
  auto& triinpoel = mesh.triinpoel();
  auto& bface = mesh.bface();
  auto& faceid = mesh.faceid();
  triinpoel.resize( m_ntri * 3 );
  for (std::size_t i=0; i<m_ntri; ++i) {
    std::array< std::size_t, 15 > n;
    for (std::size_t j=0; j<n.size(); ++j)  m_inFile >> n[j];
    --n[0];     // convert to zero-based node ids
    triinpoel[ n[0]*3+0 ] = n[6]-1;       // store zero-based node ids
    triinpoel[ n[0]*3+1 ] = n[7]-1;
    triinpoel[ n[0]*3+2 ] = n[8]-1;
    auto setid = static_cast< int >( n[1] );
    bface[ setid ].push_back( m_ntet + n[0] );  // tets written first
    faceid[ setid ].push_back( 0 );
  }
}