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217 | // *****************************************************************************
/*!
\file tests/unit/IO/TestMesh.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 Unit tests for unstructured-mesh reader and writers in IO
\details Unit tests for unstructured-mesh reader and writers in IO
*/
// *****************************************************************************
#include "NoWarning/tut.hpp"<--- Include file: "NoWarning/tut.hpp" not found.
#include "TUTConfig.hpp"<--- Include file: "TUTConfig.hpp" not found.
#include "MeshDetect.hpp"<--- Include file: "MeshDetect.hpp" not found.
#include "Reorder.hpp"<--- Include file: "Reorder.hpp" not found.
#include "DerivedData.hpp"<--- Include file: "DerivedData.hpp" not found.
#include "GmshMeshWriter.hpp"<--- Include file: "GmshMeshWriter.hpp" not found.
#include "GmshMeshReader.hpp"<--- Include file: "GmshMeshReader.hpp" not found.
#include "ExodusIIMeshWriter.hpp"<--- Include file: "ExodusIIMeshWriter.hpp" not found.
#include "ExodusIIMeshReader.hpp"<--- Include file: "ExodusIIMeshReader.hpp" not found.
#include "NetgenMeshWriter.hpp"<--- Include file: "NetgenMeshWriter.hpp" not found.
#include "NetgenMeshReader.hpp"<--- Include file: "NetgenMeshReader.hpp" not found.
#ifndef DOXYGEN_GENERATING_OUTPUT
namespace tut {
//! All tests in group inherited from this base
struct Mesh_common {
//! Generic test function for testing writing and reading a tetrahedron mesh
//! \param[in] reader Reader type
//! \param[in] ascii Boolean selecting ASCII (TEXT) or binary mesh type
void testPureTetMesh( tk::MeshReaderType reader, bool ascii = false ) {
// Coordinates for simple tetrahedron-mesh
std::vector< tk::real > coord { 0, 0, 0,
1, 0, 0,
1, 1, 0,
0, 1, 0,
0, 0, 1,
1, 0, 1,
1, 1, 1,
0, 1, 1,
0.5, 0.5, 0,
0.5, 0.5, 1,
0.5, 0, 0.5,
1, 0.5, 0.5,
0.5, 1, 0.5,
0, 0.5, 0.5 };
// Element connectivity for simple tetrahedron-mesh
std::vector< std::size_t > inpoel { 12, 14, 9, 11,
10, 14, 13, 12,
14, 13, 12, 9,
10, 14, 12, 11,
1, 14, 5, 11,
7, 6, 10, 12,
14, 8, 5, 10,
8, 7, 10, 13,
7, 13, 3, 12,
1, 4, 14, 9,
13, 4, 3, 9,
3, 2, 12, 9,
4, 8, 14, 13,
6, 5, 10, 11,
1, 2, 9, 11,
2, 6, 12, 11,
6, 10, 12, 11,
2, 12, 9, 11,
5, 14, 10, 11,
14, 8, 10, 13,
13, 3, 12, 9,
7, 10, 13, 12,
14, 4, 13, 9,
14, 1, 9, 11 };
// Shift node IDs to start from zero
tk::shiftToZero( inpoel );
// Create unstructured-mesh object initializing element connectivity
tk::UnsMesh outmesh( std::move(inpoel) );
// Fill output mesh point coordinates
for (std::size_t p=0; p<coord.size()/3; ++p) {
outmesh.x().push_back( coord[p*3] );
outmesh.y().push_back( coord[p*3+1] );
outmesh.z().push_back( coord[p*3+2] );
}
std::string filename;
// Write out mesh to file in format selected. The writer must be in its own
// scope so the destructor closes the file immediately, otherwise we risk of
// attempting to read from an unwritten file below. Also the filenames
// should differ among the various readers, since the tests can be executed
// concurrently.
if (reader == tk::MeshReaderType::GMSH && ascii) {
filename = "out_gmsh_asc.msh";
tk::GmshMeshWriter( filename, tk::GmshFileType::ASCII ).
writeMesh( outmesh );
} else if (reader == tk::MeshReaderType::GMSH && !ascii) {
filename = "out_gmsh_bin.msh";
tk::GmshMeshWriter( filename, tk::GmshFileType::BINARY ).
writeMesh( outmesh );
} else if (reader == tk::MeshReaderType::NETGEN) {
filename = "out.mesh";
tk::NetgenMeshWriter( filename ).writeMesh( outmesh );
} else if (reader == tk::MeshReaderType::EXODUSII) {
filename = "out.exo";
tk::ExodusIIMeshWriter( filename, tk::ExoWriter::CREATE ).
writeMesh( outmesh );
}
// Create unstructured-mesh object to read into
tk::UnsMesh inmesh;
// Read in mesh just written out
if (reader == tk::MeshReaderType::GMSH && ascii) {
tk::GmshMeshReader( filename ).readMesh( inmesh );
} else if (reader == tk::MeshReaderType::GMSH && !ascii) {
tk::GmshMeshReader( filename ).readMesh( inmesh );
} else if (reader == tk::MeshReaderType::NETGEN) {
tk::NetgenMeshReader( filename ).readMesh( inmesh );
} else if (reader == tk::MeshReaderType::EXODUSII) {
tk::ExodusIIMeshReader( filename ).readMesh( inmesh );
}
// Test if mesh extents are the same as was written out
ensure_equals( "number of nodes incorrect",
coord.size()/3, inmesh.x().size() );
ensure_equals( "number of nodes incorrect",
coord.size()/3, inmesh.y().size() );
ensure_equals( "number of nodes incorrect",
coord.size()/3, inmesh.z().size() );
ensure_equals( "number of elements incorrect",
outmesh.tetinpoel().size(), inmesh.tetinpoel().size() );
// Test if mesh nodes' coordinates are the same as was written out
std::vector< tk::real > x, y, z;
for (std::size_t p=0; p<coord.size()/3; ++p) {
x.push_back( coord[p*3] );
y.push_back( coord[p*3+1] );
z.push_back( coord[p*3+2] );
}
ensure( "nodes' x coordinates incorrect", x == inmesh.x() );
ensure( "nodes' y coordinates incorrect", y == inmesh.y() );
ensure( "nodes' z coordinates incorrect", z == inmesh.z() );
// Test if mesh element connectivity is the same as was written out
ensure( "element connectivity incorrect",
outmesh.tetinpoel() == inmesh.tetinpoel() );
// remove mesh file from disk
ErrChk( !std::remove( filename.data() ), "Failed to remove file" );
}
};
//! Test group shortcuts
using Mesh_group = test_group< Mesh_common, MAX_TESTS_IN_GROUP >;
using Mesh_object = Mesh_group::object;
//! Define test group
static Mesh_group Mesh( "IO/Mesh" );
//! Test definitions for group
//! Write and read Gmsh ascii mesh
template<> template<>
void Mesh_object::test< 1 >() {
set_test_name( "write/read Gmsh ASCII tet-mesh" );
testPureTetMesh( tk::MeshReaderType::GMSH, true );
}
//! Write and read Gmsh binary mesh
template<> template<>
void Mesh_object::test< 2 >() {
set_test_name( "write/read Gmsh binary tet-mesh" );
testPureTetMesh( tk::MeshReaderType::GMSH );
}
//! Write and read ExodusII mesh
template<> template<>
void Mesh_object::test< 3 >() {
set_test_name( "write/read ExodusII tet-mesh" );
testPureTetMesh( tk::MeshReaderType::EXODUSII );
}
//! Write and read Netgen mesh
template<> template<>
void Mesh_object::test< 4 >() {
set_test_name( "write/read Netgen tet-mesh" );
testPureTetMesh( tk::MeshReaderType::NETGEN );
}
} // tut::
#endif // DOXYGEN_GENERATING_OUTPUT
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