1 // Copyright (C) 2007-2023 CEA, EDF, OPEN CASCADE
3 // Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
4 // CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
6 // This library is free software; you can redistribute it and/or
7 // modify it under the terms of the GNU Lesser General Public
8 // License as published by the Free Software Foundation; either
9 // version 2.1 of the License, or (at your option) any later version.
11 // This library is distributed in the hope that it will be useful,
12 // but WITHOUT ANY WARRANTY; without even the implied warranty of
13 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 // Lesser General Public License for more details.
16 // You should have received a copy of the GNU Lesser General Public
17 // License along with this library; if not, write to the Free Software
18 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
20 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
23 //=============================================================================
24 // File : NETGENPlugin_NETGEN_3D_Remote.cxx
25 // Created : lundi 19 Septembre 2022
26 // Author : Yoann AUDOUIN (CEA)
28 //=============================================================================
31 #include "NETGENPlugin_NETGEN_3D_Remote.hxx"
33 #include "NETGENPlugin_NETGEN_3D.hxx"
35 #include "NETGENPlugin_DriverParam.hxx"
36 #include "NETGENPlugin_Hypothesis.hxx"
38 #include "Utils_SALOME_Exception.hxx"
40 #include <SMESH_Gen.hxx>
41 #include <SMESH_Mesh.hxx>
42 #include <SMESH_ParallelMesh.hxx>
43 #include <SMESH_MesherHelper.hxx>
44 #include <SMESH_DriverShape.hxx>
45 #include <SMESH_DriverMesh.hxx>
46 #include <SMESHDS_Mesh.hxx>
47 #include <SMESH_MeshLocker.hxx>
54 namespace fs = std::filesystem;
56 #include <boost/filesystem.hpp>
57 namespace fs = boost::filesystem;
67 #include <occgeom.hpp>
70 #include <ngexception.hpp>
73 #include <core/exception.hpp>
81 NETGENPLUGIN_DLL_HEADER
82 extern MeshingParameters mparam;
84 NETGENPLUGIN_DLL_HEADER
85 extern volatile multithreadt multithread;
87 using namespace nglib;
89 //=============================================================================
93 //=============================================================================
95 NETGENPlugin_NETGEN_3D_Remote::NETGENPlugin_NETGEN_3D_Remote(int hypId, SMESH_Gen * gen)
96 : NETGENPlugin_NETGEN_3D(hypId, gen)
98 _name = "NETGEN_3D_Remote";
101 //=============================================================================
105 //=============================================================================
107 NETGENPlugin_NETGEN_3D_Remote::~NETGENPlugin_NETGEN_3D_Remote()
112 * @brief Fill the structure netgen_param with the information from the hypothesis
114 * @param hyp the hypothesis
115 * @param aParams the netgen_param structure
117 void NETGENPlugin_NETGEN_3D_Remote::fillParameters(const NETGENPlugin_Hypothesis* hyp, netgen_params &aParams)
119 aParams.maxh = hyp->GetMaxSize();
120 aParams.minh = hyp->GetMinSize();
121 aParams.segmentsperedge = hyp->GetNbSegPerEdge();
122 aParams.grading = hyp->GetGrowthRate();
123 aParams.curvaturesafety = hyp->GetNbSegPerRadius();
124 aParams.secondorder = hyp->GetSecondOrder() ? 1 : 0;
125 aParams.quad = hyp->GetQuadAllowed() ? 1 : 0;
126 aParams.optimize = hyp->GetOptimize();
127 aParams.fineness = hyp->GetFineness();
128 aParams.uselocalh = hyp->GetSurfaceCurvature();
129 aParams.merge_solids = hyp->GetFuseEdges();
130 aParams.chordalError = hyp->GetChordalErrorEnabled() ? hyp->GetChordalError() : -1.;
131 aParams.optsteps2d = aParams.optimize ? hyp->GetNbSurfOptSteps() : 0;
132 aParams.optsteps3d = aParams.optimize ? hyp->GetNbVolOptSteps() : 0;
133 aParams.elsizeweight = hyp->GetElemSizeWeight();
134 aParams.opterrpow = hyp->GetWorstElemMeasure();
135 aParams.delaunay = hyp->GetUseDelauney();
136 aParams.checkoverlap = hyp->GetCheckOverlapping();
137 aParams.checkchartboundary = hyp->GetCheckChartBoundary();
140 aParams.meshsizefilename = hyp->GetMeshSizeFile();
141 aParams.closeedgefac = 2;
142 aParams.nbThreads = hyp->GetNbThreads();
145 aParams.meshsizefilename = hyp->GetMeshSizeFile();
146 aParams.closeedgefac = 0;
147 aParams.nbThreads = 0;
154 * @brief write in a binary file the orientation for each surface element of the mesh
156 * @param aMesh The mesh
157 * @param aShape the shape associated to the mesh
158 * @param output_file name of the binary file
160 void NETGENPlugin_NETGEN_3D_Remote::exportElementOrientation(SMESH_Mesh& aMesh,
161 const TopoDS_Shape& aShape,
162 const std::string output_file)
164 SMESH_MesherHelper helper(aMesh);
165 NETGENPlugin_Internals internals( aMesh, aShape, /*is3D=*/true );
166 SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
167 std::map<vtkIdType, bool> elemOrientation;
169 for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
171 const TopoDS_Shape& aShapeFace = exFa.Current();
172 int faceID = aMesh.GetMeshDS()->ShapeToIndex( aShapeFace );
173 bool isInternalFace = internals.isInternalShape( faceID );
175 if ( !isInternalFace &&
176 helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
177 // IsReversedSubMesh() can work wrong on strongly curved faces,
178 // so we use it as less as possible
179 isRev = helper.IsReversedSubMesh( TopoDS::Face( aShapeFace ));
181 const SMESHDS_SubMesh * aSubMeshDSFace = proxyMesh->GetSubMesh( aShapeFace );
182 if ( !aSubMeshDSFace ) continue;
184 SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
185 if ( _quadraticMesh &&
186 dynamic_cast< const SMESH_ProxyMesh::SubMesh*>( aSubMeshDSFace ))
188 // add medium nodes of proxy triangles to helper (#16843)
189 while ( iteratorElem->more() )
190 helper.AddTLinks( static_cast< const SMDS_MeshFace* >( iteratorElem->next() ));
192 iteratorElem = aSubMeshDSFace->GetElements();
194 while ( iteratorElem->more() ) // loop on elements on a geom face
197 const SMDS_MeshElement* elem = iteratorElem->next();
199 error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
200 if ( elem->NbCornerNodes() != 3 )
201 error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
202 elemOrientation[elem->GetID()] = isRev;
203 } // loop on elements on a face
204 } // loop on faces of a SOLID or SHELL
207 std::ofstream df(output_file, ios::out|ios::binary);
208 int size=elemOrientation.size();
210 df.write((char*)&size, sizeof(int));
211 for(auto const& [id, orient]:elemOrientation){
212 df.write((char*)&id, sizeof(vtkIdType));
213 df.write((char*)&orient, sizeof(bool));
219 * @brief Compute mesh associate to shape
221 * @param aMesh The mesh
222 * @param aShape The shape
223 * @return true fi there are some error
225 bool NETGENPlugin_NETGEN_3D_Remote::Compute(SMESH_Mesh& aMesh,
226 const TopoDS_Shape& aShape)
229 SMESH_MeshLocker myLocker(&aMesh);
230 SMESH_Hypothesis::Hypothesis_Status hypStatus;
231 NETGENPlugin_NETGEN_3D::CheckHypothesis(aMesh, aShape, hypStatus);
233 SMESH_ParallelMesh& aParMesh = dynamic_cast<SMESH_ParallelMesh&>(aMesh);
235 // Temporary folder for run
237 fs::path tmp_folder = aParMesh.GetTmpFolder() / fs::path("Volume-%%%%-%%%%");
239 fs::path tmp_folder = aParMesh.GetTmpFolder() / fs::unique_path(fs::path("Volume-%%%%-%%%%"));
241 fs::create_directories(tmp_folder);
242 // Using MESH2D generated after all triangles where created.
243 fs::path mesh_file=aParMesh.GetTmpFolder() / fs::path("Mesh2D.med");
244 fs::path element_orientation_file=tmp_folder / fs::path("element_orientation.dat");
245 fs::path new_element_file=tmp_folder / fs::path("new_elements.dat");
246 fs::path tmp_mesh_file=tmp_folder / fs::path("tmp_mesh.med");
247 // Not used kept for debug
248 //fs::path output_mesh_file=tmp_folder / fs::path("output_mesh.med");
249 fs::path shape_file=tmp_folder / fs::path("shape.brep");
250 fs::path param_file=tmp_folder / fs::path("netgen3d_param.txt");
251 fs::path log_file=tmp_folder / fs::path("run.log");
252 fs::path cmd_file=tmp_folder / fs::path("cmd.txt");
253 // TODO: See if we can retreived name from aMesh ?
254 std::string mesh_name = "MESH";
257 SMESH_MeshLocker myLocker(&aMesh);
259 SMESH_DriverShape::exportShape(shape_file.string(), aShape);
262 netgen_params aParams;
263 fillParameters(_hypParameters, aParams);
265 exportNetgenParams(param_file.string(), aParams);
267 // Exporting element orientation
268 exportElementOrientation(aMesh, aShape, element_orientation_file.string());
271 // Calling run_mesher
272 // Path to mesher script
273 fs::path mesher_launcher = fs::path(std::getenv("SMESH_ROOT_DIR"))/
276 fs::path("mesher_launcher.py");
279 std::string s_program="python3";
280 std::list<std::string> params;
281 params.push_back(mesher_launcher.string());
282 params.push_back("NETGEN3D");
283 params.push_back(mesh_file.string());
284 params.push_back(shape_file.string());
285 params.push_back(param_file.string());
286 params.push_back("--elem-orient-file=" + element_orientation_file.string());
287 params.push_back("--new-element-file=" + new_element_file.string());
289 // Parallelism method parameters
290 int method = aParMesh.GetParallelismMethod();
291 if(method == ParallelismMethod::MultiThread){
292 params.push_back("--method=local");
293 } else if (method == ParallelismMethod::MultiNode){
294 // TODO :See what parameters to handle in the end
295 params.push_back("--method=cluster");
296 params.push_back("--resource="+aParMesh.GetResource());
297 params.push_back("--wc-key="+aParMesh.GetWcKey());
298 params.push_back("--nb-proc=1");
299 params.push_back("--nb-proc-per-node="+to_string(aParMesh.GetNbProcPerNode()));
300 params.push_back("--nb-node="+to_string(aParMesh.GetNbNode()));
302 throw SALOME_Exception("Unknown parallelism method "+method);
304 std::string cmd = "";
306 for(auto arg: params){
309 MESSAGE("Running command: ");
311 // Writing command in cmd.log
313 std::ofstream flog(cmd_file.string());
317 // Building arguments for QProcess
318 QString program = QString::fromStdString(s_program);
319 QStringList arguments;
320 for(auto arg : params){
321 arguments << arg.c_str();
324 QString out_file = log_file.string().c_str();
326 myProcess.setProcessChannelMode(QProcess::MergedChannels);
327 myProcess.setStandardOutputFile(out_file);
329 myProcess.start(program, arguments);
330 // Waiting for process to finish (argument -1 make it wait until the end of
331 // the process otherwise it just waits 30 seconds)
332 bool finished = myProcess.waitForFinished(-1);
333 int ret = myProcess.exitCode();
335 if(ret != 0 || !finished){
337 std::string msg = "Issue with mesh_launcher: \n";
338 msg += "See log for more details: " + log_file.string() + "\n";
340 throw SALOME_Exception(msg);
344 SMESH_MeshLocker myLocker(&aMesh);
345 std::ifstream df(new_element_file.string(), ios::binary);
347 int Netgen_NbOfNodes;
348 int Netgen_NbOfNodesNew;
349 int Netgen_NbOfTetra;
350 double Netgen_point[3];
351 int Netgen_tetrahedron[4];
354 SMESH_MesherHelper helper(aMesh);
355 // This function is mandatory for setElementsOnShape to work
356 helper.IsQuadraticSubMesh(aShape);
357 helper.SetElementsOnShape( true );
359 // Number of nodes in intial mesh
360 df.read((char*) &Netgen_NbOfNodes, sizeof(int));
361 // Number of nodes added by netgen
362 df.read((char*) &Netgen_NbOfNodesNew, sizeof(int));
364 // Filling nodevec (correspondence netgen numbering mesh numbering)
365 vector< const SMDS_MeshNode* > nodeVec ( Netgen_NbOfNodesNew + 1 );
366 //vector<int> nodeTmpVec ( Netgen_NbOfNodesNew + 1 );
367 SMESHDS_Mesh * meshDS = helper.GetMeshDS();
368 for (int nodeIndex = 1 ; nodeIndex <= Netgen_NbOfNodes; ++nodeIndex )
371 df.read((char*) &nodeID, sizeof(int));
372 nodeVec.at(nodeIndex) = meshDS->FindNode(nodeID);
375 // Add new points and update nodeVec
376 for (int nodeIndex = Netgen_NbOfNodes +1 ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
378 df.read((char *) &Netgen_point, sizeof(double)*3);
380 nodeVec.at(nodeIndex) = helper.AddNode(Netgen_point[0],
386 df.read((char*) &Netgen_NbOfTetra, sizeof(int));
388 for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
390 df.read((char*) &Netgen_tetrahedron, sizeof(int)*4);
392 nodeVec.at( Netgen_tetrahedron[0] ),
393 nodeVec.at( Netgen_tetrahedron[1] ),
394 nodeVec.at( Netgen_tetrahedron[2] ),
395 nodeVec.at( Netgen_tetrahedron[3] ));
403 * @brief Assign submeshes to compute
405 * @param aSubMesh submesh to add
407 void NETGENPlugin_NETGEN_3D_Remote::setSubMeshesToCompute(SMESH_subMesh * aSubMesh)
409 SMESH_MeshLocker myLocker(aSubMesh->GetFather());
410 SMESH_Algo::setSubMeshesToCompute(aSubMesh);