--- /dev/null
+// Copyright (C) 2007-2023 CEA, EDF, OPEN CASCADE
+//
+// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
+// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
+//
+// 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
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+
+//=============================================================================
+// File : GMSHPlugin_GMSH_3D_Remote.hxx
+// Created : 09 Septembre 2023
+// Author : Cesar Conopoima (OCC)
+// Project : SALOME
+//=============================================================================
+//
+//
+
+#include "GMSHPlugin_GMSH_3D_Remote.hxx"
+#include "GMSHPlugin_Hypothesis.hxx"
+#include "Utils_SALOME_Exception.hxx"
+
+#include <SMESH_Gen.hxx>
+#include <SMESH_Mesh.hxx>
+#include <SMESH_ParallelMesh.hxx>
+#include <SMESH_MesherHelper.hxx>
+#include <SMESH_DriverShape.hxx>
+#include <SMESH_DriverMesh.hxx>
+#include <SMESHDS_Mesh.hxx>
+#include <SMESH_MeshLocker.hxx>
+#include <SMESH_ProxyMesh.hxx>
+
+#include <TopoDS.hxx>
+#include <TopExp.hxx>
+#include <TopExp_Explorer.hxx>
+
+#include <QString>
+#include <QProcess>
+
+#ifdef WIN32
+#include <filesystem>
+namespace fs = std::filesystem;
+#else
+#include <boost/filesystem.hpp>
+namespace fs = boost::filesystem;
+#endif
+
+//=============================================================================
+/*!
+ * Constructor
+ */
+//=============================================================================
+
+GMSHPlugin_GMSH_3D_Remote::GMSHPlugin_GMSH_3D_Remote(int hypId, SMESH_Gen * gen)
+ : GMSHPlugin_GMSH_3D(hypId, gen)
+{
+ _name = "GMSH_3D_Remote";
+}
+
+//=============================================================================
+/*!
+ * Destructor
+ */
+//=============================================================================
+
+GMSHPlugin_GMSH_3D_Remote::~GMSHPlugin_GMSH_3D_Remote()
+{
+}
+
+/**
+ * @brief Fill the structure netgen_param with the information from the hypothesis
+ *
+ * @param param_file name of the file to saven the gmsh parameter
+ * @param hyp the hypothesis
+ */
+void GMSHPlugin_GMSH_3D_Remote::exportGmshParams( const std::string param_file, const SMESHDS_Hypothesis* hyp )
+{
+ std::ofstream myfile(param_file);
+ if ( const GMSHPlugin_Hypothesis* gmshHypo = dynamic_cast<const GMSHPlugin_Hypothesis*>(hyp) )
+ {
+ myfile << 1 << std::endl; // Mark existence of correct hypothesis
+ myfile << (int) gmshHypo->Get2DAlgo() << std::endl;
+ myfile << (int) gmshHypo->Get3DAlgo() << std::endl;
+ myfile << (int) gmshHypo->GetRecomb2DAlgo() << std::endl;
+ myfile << (int) gmshHypo->GetRecombineAll() << std::endl;
+ myfile << (int) gmshHypo->GetSubdivAlgo() << std::endl;
+ myfile << (int) gmshHypo->GetRemeshAlgo() << std::endl;
+ myfile << (double) gmshHypo->GetSmouthSteps() << std::endl;
+ myfile << (double) gmshHypo->GetSizeFactor() << std::endl;
+#if GMSH_MAJOR_VERSION >=4 && GMSH_MINOR_VERSION >=10
+ myfile << (double) gmshHypo->GetMeshCurvatureSize() << std::endl;
+#elif
+ myfile << -1.0 << std::endl; // dummy value writte for conformity
+#endif
+ myfile << (double) gmshHypo->GetMaxSize() << std::endl;
+ myfile << (double) gmshHypo->GetMinSize() << std::endl;
+ myfile << (int) gmshHypo->GetSecondOrder() << std::endl;
+ myfile << (int) gmshHypo->GetUseIncomplElem() << std::endl;
+ if ( gmshHypo->GetCompoundOnEntries().size() > 0 )
+ {
+ TCompound defCompounds = gmshHypo->GetCompoundOnEntries();
+ for (TCompound::const_iterator it = defCompounds.begin(); it != defCompounds.end(); ++it )
+ {
+ std::string token = (it !=--defCompounds.end()) ? "," : "";
+ myfile << *it << token;
+ }
+ myfile << std::endl;
+ }
+ else
+ {
+ myfile << 0 << std::endl; // mark the absence of compounds
+ }
+ }
+ else
+ {
+ //Mark tha absence of parameters in the file
+ myfile << 0 << std::endl;
+ }
+ myfile.close();
+}
+
+//
+
+/**
+ * @brief write in a binary file the orientation for each surface element of the mesh
+ *
+ * @param aMesh The mesh
+ * @param aShape the shape associated to the mesh
+ * @param output_file name of the binary file
+ */
+void GMSHPlugin_GMSH_3D_Remote::exportElementOrientation(SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape,
+ const std::string output_file)
+{
+ SMESH_MesherHelper helper(aMesh);
+ SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
+ std::map<vtkIdType, bool> elemOrientation;
+
+ for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
+ {
+ const TopoDS_Shape& aShapeFace = exFa.Current();
+ int faceID = aMesh.GetMeshDS()->ShapeToIndex( aShapeFace );
+ bool isRev = false;
+ if ( helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
+ // IsReversedSubMesh() can work wrong on strongly curved faces,
+ // so we use it as less as possible
+ isRev = helper.IsReversedSubMesh( TopoDS::Face( aShapeFace ));
+
+ const SMESHDS_SubMesh * aSubMeshDSFace = proxyMesh->GetSubMesh( aShapeFace );
+ if ( !aSubMeshDSFace ) continue;
+
+ SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
+
+ while ( iteratorElem->more() ) // loop on elements on a geom face
+ {
+ // check mesh face
+ const SMDS_MeshElement* elem = iteratorElem->next();
+ if ( !elem )
+ error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
+ if ( elem->NbCornerNodes() != 3 )
+ error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
+ elemOrientation[elem->GetID()] = isRev;
+ } // loop on elements on a face
+ } // loop on faces of a SOLID or SHELL
+
+ {
+ std::ofstream df(output_file, ios::out|ios::binary);
+ int size = elemOrientation.size();
+ df.write((char*)&size, sizeof(int));
+ for(auto const& [id, orient]:elemOrientation)
+ {
+ df.write((char*)&id, sizeof(vtkIdType));
+ df.write((char*)&orient, sizeof(bool));
+ }
+ df.close();
+ }
+}
+
+/**
+ * @brief Compute mesh associate to shape
+ *
+ * @param aMesh The mesh
+ * @param aShape The shape
+ * @return true fi there are some error
+ */
+bool GMSHPlugin_GMSH_3D_Remote::Compute(SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape)
+{
+ {
+ SMESH_MeshLocker myLocker(&aMesh);
+ SMESH_Hypothesis::Hypothesis_Status hypStatus;
+ GMSHPlugin_GMSH_3D::CheckHypothesis(aMesh, aShape, hypStatus); //in this call the _hypothesis is defined!
+ }
+
+ SMESH_ParallelMesh& aParMesh = dynamic_cast<SMESH_ParallelMesh&>(aMesh);
+ // Temporary folder for run
+#ifdef WIN32
+ // On windows mesh does not have GetTmpFolder
+ fs::path tmp_folder = aParMesh.GetTmpFolder() / fs::path("Volume-%%%%-%%%%");
+#else
+ fs::path tmp_folder = aParMesh.GetTmpFolder() / fs::unique_path(fs::path("Volume-%%%%-%%%%"));
+#endif
+ fs::create_directories(tmp_folder);
+ // Using MESH2D generated after all triangles where created.
+ fs::path mesh_file= aParMesh.GetTmpFolder() / fs::path("Mesh2D.med");
+ fs::path element_orientation_file=tmp_folder / fs::path("element_orientation.dat");
+ fs::path new_element_file=tmp_folder / fs::path("new_elements.dat");
+ //fs::path tmp_mesh_file=tmp_folder / fs::path("tmp_mesh.med");
+ // Not used kept for debug
+ // fs::path output_mesh_file=tmp_folder / fs::path("output_mesh.med");
+ fs::path shape_file=tmp_folder / fs::path("shape.brep");
+ fs::path param_file=tmp_folder / fs::path("gmsh_param.txt");
+ fs::path log_file=tmp_folder / fs::path("run.log");
+ fs::path cmd_file=tmp_folder / fs::path("cmd.txt");
+
+ std::string mesh_name = "MESH";
+
+ {
+ SMESH_MeshLocker myLocker(&aMesh);
+ //Writing Shape
+ SMESH_DriverShape::exportShape(shape_file.string(), aShape);
+
+ //Writing hypothesis to file
+ exportGmshParams(param_file.string(), _hypothesis);
+
+ // Exporting element orientation
+ exportElementOrientation(aMesh, aShape, element_orientation_file.string());
+ }
+
+ // Calling run_mesher
+ // Path to mesher script
+ fs::path mesher_launcher = fs::path(std::getenv("SMESH_ROOT_DIR"))/
+ fs::path("bin")/
+ fs::path("salome")/
+ fs::path("mesher_launcher.py");
+
+ std::string s_program="python3";
+ std::list<std::string> params;
+ params.push_back(mesher_launcher.string());
+ params.push_back("GMSH3D");
+ params.push_back(mesh_file.string());
+ params.push_back(shape_file.string());
+ params.push_back(param_file.string());
+ params.push_back("--elem-orient-file=" + element_orientation_file.string());
+ params.push_back("--new-element-file=" + new_element_file.string());
+ // params.push_back("--output-mesh-file=" + output_mesh_file.string());
+
+ // Parallelism method parameters
+ int method = aParMesh.GetParallelismMethod();
+ if(method == ParallelismMethod::MultiThread){
+ params.push_back("--method=local");
+ } else if (method == ParallelismMethod::MultiNode){
+ params.push_back("--method=cluster");
+ params.push_back("--resource="+aParMesh.GetResource());
+ params.push_back("--wc-key="+aParMesh.GetWcKey());
+ params.push_back("--nb-proc=1");
+ params.push_back("--nb-proc-per-node="+std::to_string(aParMesh.GetNbProcPerNode()));
+ params.push_back("--nb-node="+std::to_string(aParMesh.GetNbNode()));
+ params.push_back("--walltime="+aParMesh.GetWalltime());
+ } else {
+ throw SALOME_Exception("Unknown parallelism method "+method);
+ }
+
+ std::string cmd = "";
+ cmd += s_program;
+ for(auto arg: params){
+ cmd += " " + arg;
+ }
+ MESSAGE("Running command: ");
+ MESSAGE(cmd);
+ // Writing command in cmd.log
+ {
+ std::ofstream flog(cmd_file.string());
+ flog << cmd << endl;
+ }
+
+ // Building arguments for QProcess
+ QString program = QString::fromStdString(s_program);
+ QStringList arguments;
+ for(auto arg : params){
+ arguments << arg.c_str();
+ }
+
+ QString out_file = log_file.string().c_str();
+ QProcess myProcess;
+ // myProcess.setProcessChannelMode(QProcess::MergedChannels);
+ myProcess.setProcessChannelMode(QProcess::ForwardedChannels);
+ myProcess.setStandardOutputFile(out_file);
+
+ myProcess.start(program, arguments);
+ // Waiting for process to finish (argument -1 make it wait until the end of
+ // the process otherwise it just waits 30 seconds)
+ bool finished = myProcess.waitForFinished(-1);
+ int ret = myProcess.exitCode();
+ if(ret != 0 || !finished){
+ // Run crahed
+ std::string msg = "Issue with mesh_launcher: \n";
+ msg += "See log for more details: " + log_file.string() + "\n";
+ msg += cmd + "\n";
+ throw SALOME_Exception(msg);
+ }
+ {
+ SMESH_MeshLocker myLocker(&aMesh);
+ // Binary file written from SA version of the mesher
+ std::ifstream df(new_element_file.string(), ios::binary);
+
+ int numberOfNodes;
+ int totalNumberOfNodes;
+ int numberOfVolumes;
+ double meshNodes[3];
+ int volNodes[4];
+ int nodeID;
+
+ SMESH_MesherHelper helper(aMesh);
+ // This function is mandatory for setElementsOnShape to work
+ helper.IsQuadraticSubMesh(aShape);
+ helper.SetElementsOnShape( true );
+
+ // Number of nodes in intial mesh
+ df.read((char*) &numberOfNodes, sizeof(int));
+ // Number of nodes added by netgen
+ df.read((char*) &totalNumberOfNodes, sizeof(int));
+ // Filling nodevec (correspondence netgen numbering mesh numbering)
+ std::vector< const SMDS_MeshNode* > nodeVec ( totalNumberOfNodes + 1 );
+ SMESHDS_Mesh * meshDS = helper.GetMeshDS();
+ for (int nodeIndex = 1 ; nodeIndex <= numberOfNodes; ++nodeIndex )
+ {
+ //Id of the point
+ df.read((char*) &nodeID, sizeof(int));
+ nodeVec.at(nodeIndex) = meshDS->FindNode(nodeID);
+ }
+
+ // Add new points and update nodeVec
+ for (int nodeIndex = numberOfNodes +1; nodeIndex <= totalNumberOfNodes; ++nodeIndex )
+ {
+ df.read((char *) &meshNodes, sizeof(double)*3);
+ nodeVec.at(nodeIndex) = helper.AddNode(meshNodes[0], meshNodes[1], meshNodes[2]);
+ }
+
+ // Add tetrahedrons
+ df.read((char*) &numberOfVolumes, sizeof(int));
+ for ( int elemIndex = 1; elemIndex <= numberOfVolumes; ++elemIndex )
+ {
+ df.read((char*) &volNodes, sizeof(int)*4);
+ auto n0 = meshDS->FindNode(nodeVec[volNodes[0]]->GetID());
+ auto n1 = meshDS->FindNode(nodeVec[volNodes[1]]->GetID());
+ auto n2 = meshDS->FindNode(nodeVec[volNodes[2]]->GetID());
+ auto n3 = meshDS->FindNode(nodeVec[volNodes[3]]->GetID());
+ if ( n0 && n1 && n2 && n3 )
+ helper.AddVolume( n0, n2, n1, n3 );
+ }
+ }
+
+ return true;
+}
+
+/**
+ * @brief Assign submeshes to compute
+ *
+ * @param aSubMesh submesh to add
+ */
+void GMSHPlugin_GMSH_3D_Remote::setSubMeshesToCompute(SMESH_subMesh * aSubMesh)
+{
+ SMESH_MeshLocker myLocker(aSubMesh->GetFather());
+ SMESH_Algo::setSubMeshesToCompute(aSubMesh);
+}
