1 // Copyright (C) 2007-2023 CEA/DEN, EDF R&D, 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_MesherHelper.hxx>
43 #include <SMESH_DriverShape.hxx>
44 #include <SMESH_DriverMesh.hxx>
45 #include <SMESHDS_Mesh.hxx>
46 #include <SMESH_MeshLocker.hxx>
53 namespace fs = std::filesystem;
55 #include <boost/filesystem.hpp>
56 namespace fs = boost::filesystem;
66 #include <occgeom.hpp>
69 #include <ngexception.hpp>
72 #include <core/exception.hpp>
80 NETGENPLUGIN_DLL_HEADER
81 extern MeshingParameters mparam;
83 NETGENPLUGIN_DLL_HEADER
84 extern volatile multithreadt multithread;
86 using namespace nglib;
88 //=============================================================================
92 //=============================================================================
94 NETGENPlugin_NETGEN_3D_Remote::NETGENPlugin_NETGEN_3D_Remote(int hypId, SMESH_Gen * gen)
95 : NETGENPlugin_NETGEN_3D(hypId, gen)
97 _name = "NETGEN_3D_Remote";
100 //=============================================================================
104 //=============================================================================
106 NETGENPlugin_NETGEN_3D_Remote::~NETGENPlugin_NETGEN_3D_Remote()
111 * @brief Fill the structure netgen_param with the information from the hypothesis
113 * @param hyp the hypothesis
114 * @param aParams the netgen_param structure
116 void NETGENPlugin_NETGEN_3D_Remote::fillParameters(const NETGENPlugin_Hypothesis* hyp, netgen_params &aParams)
118 aParams.maxh = hyp->GetMaxSize();
119 aParams.minh = hyp->GetMinSize();
120 aParams.segmentsperedge = hyp->GetNbSegPerEdge();
121 aParams.grading = hyp->GetGrowthRate();
122 aParams.curvaturesafety = hyp->GetNbSegPerRadius();
123 aParams.secondorder = hyp->GetSecondOrder() ? 1 : 0;
124 aParams.quad = hyp->GetQuadAllowed() ? 1 : 0;
125 aParams.optimize = hyp->GetOptimize();
126 aParams.fineness = hyp->GetFineness();
127 aParams.uselocalh = hyp->GetSurfaceCurvature();
128 aParams.merge_solids = hyp->GetFuseEdges();
129 aParams.chordalError = hyp->GetChordalErrorEnabled() ? hyp->GetChordalError() : -1.;
130 aParams.optsteps2d = aParams.optimize ? hyp->GetNbSurfOptSteps() : 0;
131 aParams.optsteps3d = aParams.optimize ? hyp->GetNbVolOptSteps() : 0;
132 aParams.elsizeweight = hyp->GetElemSizeWeight();
133 aParams.opterrpow = hyp->GetWorstElemMeasure();
134 aParams.delaunay = hyp->GetUseDelauney();
135 aParams.checkoverlap = hyp->GetCheckOverlapping();
136 aParams.checkchartboundary = hyp->GetCheckChartBoundary();
139 aParams.meshsizefilename = hyp->GetMeshSizeFile();
140 aParams.closeedgefac = 2;
141 aParams.nbThreads = hyp->GetNbThreads();
144 aParams.meshsizefilename = hyp->GetMeshSizeFile();
145 aParams.closeedgefac = 0;
146 aParams.nbThreads = 0;
153 * @brief write in a binary file the orientation for each surface element of the mesh
155 * @param aMesh The mesh
156 * @param aShape the shape associated to the mesh
157 * @param output_file name of the binary file
159 void NETGENPlugin_NETGEN_3D_Remote::exportElementOrientation(SMESH_Mesh& aMesh,
160 const TopoDS_Shape& aShape,
161 const std::string output_file)
163 SMESH_MesherHelper helper(aMesh);
164 NETGENPlugin_Internals internals( aMesh, aShape, /*is3D=*/true );
165 SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
166 std::map<vtkIdType, bool> elemOrientation;
168 for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
170 const TopoDS_Shape& aShapeFace = exFa.Current();
171 int faceID = aMesh.GetMeshDS()->ShapeToIndex( aShapeFace );
172 bool isInternalFace = internals.isInternalShape( faceID );
174 if ( !isInternalFace &&
175 helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
176 // IsReversedSubMesh() can work wrong on strongly curved faces,
177 // so we use it as less as possible
178 isRev = helper.IsReversedSubMesh( TopoDS::Face( aShapeFace ));
180 const SMESHDS_SubMesh * aSubMeshDSFace = proxyMesh->GetSubMesh( aShapeFace );
181 if ( !aSubMeshDSFace ) continue;
183 SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
184 if ( _quadraticMesh &&
185 dynamic_cast< const SMESH_ProxyMesh::SubMesh*>( aSubMeshDSFace ))
187 // add medium nodes of proxy triangles to helper (#16843)
188 while ( iteratorElem->more() )
189 helper.AddTLinks( static_cast< const SMDS_MeshFace* >( iteratorElem->next() ));
191 iteratorElem = aSubMeshDSFace->GetElements();
193 while ( iteratorElem->more() ) // loop on elements on a geom face
196 const SMDS_MeshElement* elem = iteratorElem->next();
198 error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
199 if ( elem->NbCornerNodes() != 3 )
200 error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
201 elemOrientation[elem->GetID()] = isRev;
202 } // loop on elements on a face
203 } // loop on faces of a SOLID or SHELL
206 std::ofstream df(output_file, ios::out|ios::binary);
207 int size=elemOrientation.size();
209 df.write((char*)&size, sizeof(int));
210 for(auto const& [id, orient]:elemOrientation){
211 df.write((char*)&id, sizeof(vtkIdType));
212 df.write((char*)&orient, sizeof(bool));
218 * @brief Compute mesh associate to shape
220 * @param aMesh The mesh
221 * @param aShape The shape
222 * @return true fi there are some error
224 bool NETGENPlugin_NETGEN_3D_Remote::Compute(SMESH_Mesh& aMesh,
225 const TopoDS_Shape& aShape)
228 SMESH_MeshLocker myLocker(&aMesh);
229 SMESH_Hypothesis::Hypothesis_Status hypStatus;
230 NETGENPlugin_NETGEN_3D::CheckHypothesis(aMesh, aShape, hypStatus);
234 // Temporary folder for run
236 // On windows mesh does not have GetTmpFolder
237 fs::path tmp_folder = fs::path("Volume-%%%%-%%%%");
239 fs::path tmp_folder = aMesh.GetTmpFolder() / fs::unique_path(fs::path("Volume-%%%%-%%%%"));
241 fs::create_directories(tmp_folder);
242 // Using MESH2D generated after all triangles where created.
244 fs::path mesh_file=fs::path("Mesh2D.med");
246 fs::path mesh_file=aMesh.GetTmpFolder() / fs::path("Mesh2D.med");
248 fs::path element_orientation_file=tmp_folder / fs::path("element_orientation.dat");
249 fs::path new_element_file=tmp_folder / fs::path("new_elements.dat");
250 fs::path tmp_mesh_file=tmp_folder / fs::path("tmp_mesh.med");
251 // Not used kept for debug
252 //fs::path output_mesh_file=tmp_folder / fs::path("output_mesh.med");
253 fs::path shape_file=tmp_folder / fs::path("shape.brep");
254 fs::path param_file=tmp_folder / fs::path("netgen3d_param.txt");
255 fs::path log_file=tmp_folder / fs::path("run.log");
256 fs::path cmd_file=tmp_folder / fs::path("cmd.log");
257 std::string mesh_name = "MESH";
260 SMESH_MeshLocker myLocker(&aMesh);
262 SMESH_DriverShape::exportShape(shape_file.string(), aShape);
265 netgen_params aParams;
266 fillParameters(_hypParameters, aParams);
268 exportNetgenParams(param_file.string(), aParams);
270 // Exporting element orientation
271 exportElementOrientation(aMesh, aShape, element_orientation_file.string());
274 // Calling run_mesher
276 fs::path run_mesher_exe =
277 fs::path(std::getenv("NETGENPLUGIN_ROOT_DIR"))/
281 fs::path("NETGENPlugin_Runner.exe");
283 fs::path("NETGENPlugin_Runner");
286 cmd = run_mesher_exe.string() +
287 " NETGEN3D " + mesh_file.string() + " "
288 + shape_file.string() + " "
289 + param_file.string() + " "
290 + element_orientation_file.string() + " "
291 + new_element_file.string() + " "
293 // Writing command in log
295 std::ofstream flog(cmd_file.string());
299 MESSAGE("Running command: ");
303 // Building arguments for QProcess
304 QString program = run_mesher_exe.string().c_str();
305 QStringList arguments;
306 arguments << "NETGEN3D";
307 arguments << mesh_file.string().c_str();
308 arguments << shape_file.string().c_str();
309 arguments << param_file.string().c_str();
310 arguments << element_orientation_file.string().c_str();
311 arguments << new_element_file.string().c_str();
313 QString out_file = log_file.string().c_str();
315 myProcess.setStandardOutputFile(out_file);
317 myProcess.start(program, arguments);
318 // Waiting for process to finish (argument -1 make it wait until the end of
319 // the process otherwise it just waits 30 seconds)
320 myProcess.waitForFinished(-1);
321 int ret = myProcess.exitStatus();
325 std::string msg = "Issue with command: \n";
326 msg += "See log for more details: " + log_file.string() + "\n";
328 throw SALOME_Exception(msg);
332 SMESH_MeshLocker myLocker(&aMesh);
333 std::ifstream df(new_element_file.string(), ios::binary);
335 int Netgen_NbOfNodes;
336 int Netgen_NbOfNodesNew;
337 int Netgen_NbOfTetra;
338 double Netgen_point[3];
339 int Netgen_tetrahedron[4];
342 SMESH_MesherHelper helper(aMesh);
343 // This function is mandatory for setElementsOnShape to work
344 helper.IsQuadraticSubMesh(aShape);
345 helper.SetElementsOnShape( true );
347 // Number of nodes in intial mesh
348 df.read((char*) &Netgen_NbOfNodes, sizeof(int));
349 // Number of nodes added by netgen
350 df.read((char*) &Netgen_NbOfNodesNew, sizeof(int));
352 // Filling nodevec (correspondence netgen numbering mesh numbering)
353 vector< const SMDS_MeshNode* > nodeVec ( Netgen_NbOfNodesNew + 1 );
354 //vector<int> nodeTmpVec ( Netgen_NbOfNodesNew + 1 );
355 SMESHDS_Mesh * meshDS = helper.GetMeshDS();
356 for (int nodeIndex = 1 ; nodeIndex <= Netgen_NbOfNodes; ++nodeIndex )
359 df.read((char*) &nodeID, sizeof(int));
360 nodeVec.at(nodeIndex) = meshDS->FindNode(nodeID);
363 // Add new points and update nodeVec
364 for (int nodeIndex = Netgen_NbOfNodes +1 ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
366 df.read((char *) &Netgen_point, sizeof(double)*3);
368 nodeVec.at(nodeIndex) = helper.AddNode(Netgen_point[0],
374 df.read((char*) &Netgen_NbOfTetra, sizeof(int));
376 for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
378 df.read((char*) &Netgen_tetrahedron, sizeof(int)*4);
380 nodeVec.at( Netgen_tetrahedron[0] ),
381 nodeVec.at( Netgen_tetrahedron[1] ),
382 nodeVec.at( Netgen_tetrahedron[2] ),
383 nodeVec.at( Netgen_tetrahedron[3] ));
391 * @brief Assign submeshes to compute
393 * @param aSubMesh submesh to add
395 void NETGENPlugin_NETGEN_3D_Remote::setSubMeshesToCompute(SMESH_subMesh * aSubMesh)
397 SMESH_MeshLocker myLocker(aSubMesh->GetFather());
398 SMESH_Algo::setSubMeshesToCompute(aSubMesh);