1 // Copyright (C) 2007-2022 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_SA.cxx
25 // Created : lundi 19 Septembre 2022
26 // Author : Yoann AUDOUIN (CEA)
28 //=============================================================================
31 #include "NETGENPlugin_NETGEN_3D_SA.hxx"
33 #include "NETGENPlugin_DriverParam.hxx"
34 #include "NETGENPlugin_Hypothesis.hxx"
35 #include "StdMeshers_MaxElementVolume.hxx"
37 #include <SMESH_Gen.hxx>
38 #include <SMESH_Mesh.hxx>
39 #include <SMESH_MesherHelper.hxx>
40 #include <SMESH_DriverShape.hxx>
41 #include <SMESH_DriverMesh.hxx>
42 #include <SMESHDS_Mesh.hxx>
45 #include <boost/filesystem.hpp>
46 namespace fs = boost::filesystem;
55 #include <occgeom.hpp>
58 #include <ngexception.hpp>
61 #include <core/exception.hpp>
69 NETGENPLUGIN_DLL_HEADER
70 extern MeshingParameters mparam;
72 NETGENPLUGIN_DLL_HEADER
73 extern volatile multithreadt multithread;
75 using namespace nglib;
77 //=============================================================================
81 //=============================================================================
83 NETGENPlugin_NETGEN_3D_SA::NETGENPlugin_NETGEN_3D_SA()
84 : NETGENPlugin_NETGEN_3D(0, _gen=new SMESH_Gen())
86 _name = "NETGEN_3D_SA";
89 //=============================================================================
93 //=============================================================================
95 NETGENPlugin_NETGEN_3D_SA::~NETGENPlugin_NETGEN_3D_SA()
106 void NETGENPlugin_NETGEN_3D_SA::fillHyp(netgen_params aParams, SMESH_Gen* gen)
108 if(aParams.has_netgen_param){
109 NETGENPlugin_Hypothesis * hypParameters = new NETGENPlugin_Hypothesis(0, gen);
111 hypParameters->SetMaxSize(aParams.maxh);
112 hypParameters->SetMinSize(aParams.minh);
113 hypParameters->SetNbSegPerEdge(aParams.segmentsperedge);
114 hypParameters->SetGrowthRate(aParams.grading);
115 hypParameters->SetNbSegPerRadius(aParams.curvaturesafety);
116 hypParameters->SetSecondOrder(aParams.secondorder);
117 hypParameters->SetQuadAllowed(aParams.quad);
118 hypParameters->SetOptimize(aParams.optimize);
119 hypParameters->SetFineness((NETGENPlugin_Hypothesis::Fineness)aParams.fineness);
120 hypParameters->SetSurfaceCurvature(aParams.uselocalh);
121 hypParameters->SetFuseEdges(aParams.merge_solids);
122 hypParameters->SetChordalErrorEnabled(aParams.chordalError);
123 if(aParams.optimize){
124 hypParameters->SetNbSurfOptSteps(aParams.optsteps2d);
125 hypParameters->SetNbVolOptSteps(aParams.optsteps3d);
127 hypParameters->SetElemSizeWeight(aParams.elsizeweight);
128 hypParameters->SetWorstElemMeasure(aParams.opterrpow);
129 hypParameters->SetUseDelauney(aParams.delaunay);
130 hypParameters->SetCheckOverlapping(aParams.checkoverlap);
131 hypParameters->SetCheckChartBoundary(aParams.checkchartboundary);
132 hypParameters->SetMeshSizeFile(aParams.meshsizefilename);
134 _hypParameters = dynamic_cast< const NETGENPlugin_Hypothesis *> (hypParameters);
136 if(aParams.has_maxelementvolume_hyp){
137 _hypMaxElementVolume = new StdMeshers_MaxElementVolume(1, gen);
138 _maxElementVolume = aParams.maxElementVolume;
140 // TODO: Handle viscous layer
143 bool NETGENPlugin_NETGEN_3D_SA::computeFillNewElementFile(
144 std::vector< const SMDS_MeshNode* > &nodeVec,
145 NETGENPlugin_NetgenLibWrapper &ngLib,
146 std::string new_element_file,
147 int &Netgen_NbOfNodes
150 Ng_Mesh* Netgen_mesh = ngLib.ngMesh();
152 int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
153 int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
155 bool isOK = ( Netgen_NbOfTetra > 0 );
156 if ( isOK && !new_element_file.empty() )
158 std::ofstream df(new_element_file, ios::out|ios::binary);
160 double Netgen_point[3];
161 int Netgen_tetrahedron[4];
163 // Writing nodevec (correspondence netgen numbering mesh numbering)
165 df.write((char*) &Netgen_NbOfNodes, sizeof(int));
166 df.write((char*) &Netgen_NbOfNodesNew, sizeof(int));
167 for (int nodeIndex = 1 ; nodeIndex <= Netgen_NbOfNodes; ++nodeIndex )
170 int id = nodeVec.at(nodeIndex)->GetID();
171 df.write((char*) &id, sizeof(int));
174 // Writing info on new points
175 for (int nodeIndex = Netgen_NbOfNodes +1 ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
177 Ng_GetPoint(Netgen_mesh, nodeIndex, Netgen_point );
178 // Coordinates of the point
179 df.write((char *) &Netgen_point, sizeof(double)*3);
182 // create tetrahedrons
183 df.write((char*) &Netgen_NbOfTetra, sizeof(int));
184 for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
186 Ng_GetVolumeElement(Netgen_mesh, elemIndex, Netgen_tetrahedron);
187 df.write((char*) &Netgen_tetrahedron, sizeof(int)*4);
194 bool NETGENPlugin_NETGEN_3D_SA::Compute(TopoDS_Shape &aShape, SMESH_Mesh& aMesh, netgen_params& aParams,
195 std::string new_element_file, bool output_mesh)
197 // vector of nodes in which node index == netgen ID
198 vector< const SMDS_MeshNode* > nodeVec;
199 NETGENPlugin_NetgenLibWrapper ngLib;
200 SMESH_MesherHelper helper(aMesh);
201 int startWith = netgen::MESHCONST_MESHVOLUME;
202 int endWith = netgen::MESHCONST_OPTVOLUME;
203 int Netgen_NbOfNodes=0;
205 // Changing netgen log_file putting it next to new_element_file
206 fs::path netgen_log_file = fs::path(new_element_file).remove_filename() / fs::path("NETGEN.out");
208 ngLib.setOutputFile(netgen_log_file.string());
210 NETGENPlugin_NETGEN_3D::computeFillNgMesh(aMesh, aShape, nodeVec, ngLib, helper, Netgen_NbOfNodes);
212 netgen::OCCGeometry occgeo;
213 NETGENPlugin_NETGEN_3D::computePrepareParam(aMesh, ngLib, occgeo, helper, endWith);
215 NETGENPlugin_NETGEN_3D::computeRunMesher(occgeo, nodeVec, ngLib._ngMesh, ngLib, startWith, endWith);
217 computeFillNewElementFile(nodeVec, ngLib, new_element_file, Netgen_NbOfNodes);
220 NETGENPlugin_NETGEN_3D::computeFillMesh(nodeVec, ngLib, helper, Netgen_NbOfNodes);
225 int NETGENPlugin_NETGEN_3D_SA::run(const std::string input_mesh_file,
226 const std::string shape_file,
227 const std::string hypo_file,
228 const std::string element_orientation_file,
229 const std::string new_element_file,
230 const std::string output_mesh_file,
234 _element_orientation_file = element_orientation_file;
238 std::unique_ptr<SMESH_Mesh> myMesh(gen.CreateMesh(false));
240 importMesh(input_mesh_file, *myMesh);
243 TopoDS_Shape myShape;
244 importShape(shape_file, myShape);
246 // Importing hypothesis
247 netgen_params myParams;
249 importNetgenParams(hypo_file, myParams);
250 fillHyp(myParams, &gen);
251 // Setting number of threads for netgen
252 myParams.nbThreads = nbThreads;
254 MESSAGE("Meshing with netgen3d");
255 int ret = Compute(myShape, *myMesh, myParams,
257 !output_mesh_file.empty());
261 std::cerr << "Meshing failed" << std::endl;
265 if(!output_mesh_file.empty()){
266 std::string meshName = "MESH";
267 exportMesh(output_mesh_file, *myMesh, meshName);
274 bool NETGENPlugin_NETGEN_3D_SA::getSurfaceElements(
276 const TopoDS_Shape& aShape,
277 SMESH_ProxyMesh::Ptr proxyMesh,
278 NETGENPlugin_Internals &internals,
279 SMESH_MesherHelper &helper,
280 std::map<const SMDS_MeshElement*, tuple<bool, bool>>& listElements
283 // To remove compilation warnings
288 SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
290 // Get list of elements + their orientation from element_orientation file
291 std::map<vtkIdType, bool> elemOrientation;
293 // Setting all element orientation to false if there no element orientation file
294 if(_element_orientation_file.empty()){
295 MESSAGE("No element orientation file");
297 SMDS_ElemIteratorPtr iteratorElem = meshDS->elementsIterator(SMDSAbs_Face);
298 while ( iteratorElem->more() ) // loop on elements on a geom face
301 const SMDS_MeshElement* elem = iteratorElem->next();
302 elemOrientation[elem->GetID()] = false;
305 MESSAGE("Reading from elements from file: " << _element_orientation_file);
306 std::ifstream df(_element_orientation_file, ios::binary|ios::in);
310 // Warning of the use of vtkIdType (I had issue when run_mesher was compiled with internal vtk) and salome not
311 // Sizeof was the same but how he othered the type was different
312 // Maybe using another type (uint64_t) instead would be better
314 df.read((char*)&nbElement, sizeof(int));
316 for(int ielem=0;ielem<nbElement;++ielem){
317 df.read((char*) &id, sizeof(vtkIdType));
318 df.read((char*) &orient, sizeof(bool));
319 elemOrientation[id] = orient;
324 // Adding elements from Mesh
325 SMDS_ElemIteratorPtr iteratorElem = meshDS->elementsIterator(SMDSAbs_Face);
330 while ( iteratorElem->more() ) // loop on elements on a geom face
333 const SMDS_MeshElement* elem = iteratorElem->next();
335 return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
337 if ( elem->NbCornerNodes() != 3 ){
338 return error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
340 // Keeping only element that are in the element orientation file
341 isIn = elemOrientation.count(elem->GetID())==1;
345 // Netgen requires that all the triangle point outside
346 isRev = elemOrientation[elem->GetID()];
347 listElements[elem] = tuple(isRev, false);