//================================================================================
/*!
- * \brief Initialize given NETGEN parameters with default values
+ * \brief Initialize global NETGEN parameters with default values
*/
//================================================================================
#endif
}
-//================================================================================
+//=============================================================================
/*!
- * \brief Initialize global NETGEN parameters with default values
+ * Pass parameters to NETGEN
*/
-//================================================================================
-
+//=============================================================================
void NETGENPlugin_Mesher::SetParameters(const NETGENPlugin_Hypothesis* hyp)
{
- netgen::MeshingParameters& mparams = netgen::mparam;
- // Initialize global NETGEN parameters:
- // maximal mesh segment size
- mparams.maxh = hyp->GetMaxSize();
- // maximal mesh element linear size
- mparams.minh = hyp->GetMinSize();
- // minimal number of segments per edge
- mparams.segmentsperedge = hyp->GetNbSegPerEdge();
- // rate of growth of size between elements
- mparams.grading = hyp->GetGrowthRate();
- // safety factor for curvatures (elements per radius)
- mparams.curvaturesafety = hyp->GetNbSegPerRadius();
- // create elements of second order
- mparams.secondorder = hyp->GetSecondOrder() ? 1 : 0;
- // quad-dominated surface meshing
- mparams.quad = hyp->GetQuadAllowed() ? 1 : 0;
- _optimize = hyp->GetOptimize();
- _fineness = hyp->GetFineness();
- mparams.uselocalh = hyp->GetSurfaceCurvature();
- netgen::merge_solids = hyp->GetFuseEdges();
- _chordalError = hyp->GetChordalErrorEnabled() ? hyp->GetChordalError() : -1.;
- mparams.optsteps2d = _optimize ? hyp->GetNbSurfOptSteps() : 0;
- mparams.optsteps3d = _optimize ? hyp->GetNbVolOptSteps() : 0;
- mparams.elsizeweight = hyp->GetElemSizeWeight();
- mparams.opterrpow = hyp->GetWorstElemMeasure();
- mparams.delaunay = hyp->GetUseDelauney();
- mparams.checkoverlap = hyp->GetCheckOverlapping();
- mparams.checkchartboundary = hyp->GetCheckChartBoundary();
- _simpleHyp = NULL;
- // mesh size file
+ if (hyp)
+ {
+ netgen::MeshingParameters& mparams = netgen::mparam;
+ // Initialize global NETGEN parameters:
+ // maximal mesh segment size
+ mparams.maxh = hyp->GetMaxSize();
+ // maximal mesh element linear size
+ mparams.minh = hyp->GetMinSize();
+ // minimal number of segments per edge
+ mparams.segmentsperedge = hyp->GetNbSegPerEdge();
+ // rate of growth of size between elements
+ mparams.grading = hyp->GetGrowthRate();
+ // safety factor for curvatures (elements per radius)
+ mparams.curvaturesafety = hyp->GetNbSegPerRadius();
+ // create elements of second order
+ mparams.secondorder = hyp->GetSecondOrder() ? 1 : 0;
+ // quad-dominated surface meshing
+ mparams.quad = hyp->GetQuadAllowed() ? 1 : 0;
+ _optimize = hyp->GetOptimize();
+ _fineness = hyp->GetFineness();
+ mparams.uselocalh = hyp->GetSurfaceCurvature();
+ netgen::merge_solids = hyp->GetFuseEdges();
+ _chordalError = hyp->GetChordalErrorEnabled() ? hyp->GetChordalError() : -1.;
+ mparams.optsteps2d = _optimize ? hyp->GetNbSurfOptSteps() : 0;
+ mparams.optsteps3d = _optimize ? hyp->GetNbVolOptSteps() : 0;
+ mparams.elsizeweight = hyp->GetElemSizeWeight();
+ mparams.opterrpow = hyp->GetWorstElemMeasure();
+ mparams.delaunay = hyp->GetUseDelauney();
+ mparams.checkoverlap = hyp->GetCheckOverlapping();
+ mparams.checkchartboundary = hyp->GetCheckChartBoundary();
+ _simpleHyp = NULL;
+ // mesh size file
#ifdef NETGEN_V6
- // std::string
- mparams.meshsizefilename = hyp->GetMeshSizeFile();
+ // std::string
+ mparams.meshsizefilename = hyp->GetMeshSizeFile();
#else
- // const char*
- mparams.meshsizefilename= hyp->GetMeshSizeFile().empty() ? 0 : hyp->GetMeshSizeFile().c_str();
+ // const char*
+ mparams.meshsizefilename= hyp->GetMeshSizeFile().empty() ? 0 : hyp->GetMeshSizeFile().c_str();
#endif
- const NETGENPlugin_Hypothesis::TLocalSize& localSizes = hyp->GetLocalSizesAndEntries();
- if ( !localSizes.empty() )
- {
- SMESH_Gen_i* smeshGen_i = SMESH_Gen_i::GetSMESHGen();
- NETGENPlugin_Hypothesis::TLocalSize::const_iterator it = localSizes.begin();
- for ( ; it != localSizes.end() ; it++)
+ const NETGENPlugin_Hypothesis::TLocalSize& localSizes = hyp->GetLocalSizesAndEntries();
+ if ( !localSizes.empty() )
{
- std::string entry = (*it).first;
- double val = (*it).second;
- // --
- GEOM::GEOM_Object_var aGeomObj;
- SALOMEDS::SObject_var aSObj = SMESH_Gen_i::GetSMESHGen()->getStudyServant()->FindObjectID( entry.c_str() );
- if ( !aSObj->_is_nil() ) {
- CORBA::Object_var obj = aSObj->GetObject();
- aGeomObj = GEOM::GEOM_Object::_narrow(obj);
- aSObj->UnRegister();
+ SMESH_Gen_i* smeshGen_i = SMESH_Gen_i::GetSMESHGen();
+ NETGENPlugin_Hypothesis::TLocalSize::const_iterator it = localSizes.begin();
+ for ( ; it != localSizes.end() ; it++)
+ {
+ std::string entry = (*it).first;
+ double val = (*it).second;
+ // --
+ GEOM::GEOM_Object_var aGeomObj;
+ SALOMEDS::SObject_var aSObj = SMESH_Gen_i::GetSMESHGen()->getStudyServant()->FindObjectID( entry.c_str() );
+ if ( !aSObj->_is_nil() ) {
+ CORBA::Object_var obj = aSObj->GetObject();
+ aGeomObj = GEOM::GEOM_Object::_narrow(obj);
+ aSObj->UnRegister();
+ }
+ TopoDS_Shape S = smeshGen_i->GeomObjectToShape( aGeomObj.in() );
+ setLocalSize(S, val);
}
- TopoDS_Shape S = smeshGen_i->GeomObjectToShape( aGeomObj.in() );
- setLocalSize(S, val);
}
}
+
#ifdef NETGEN_V6
netgen::mparam.closeedgefac = 2;
int NETGENPlugin_NetgenLibWrapper::GenerateMesh( netgen::OCCGeometry& occgeo,
int startWith, int endWith,
- netgen::Mesh* & ngMesh)
+ netgen::Mesh* & ngMesh )
{
int err = 0;
if ( !ngMesh )
+// Copyright (C) 2007-2021 CEA/DEN, EDF R&D, OPEN CASCADE
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
#include "NETGENPlugin_Mesher.hxx"
#include "NETGENPlugin_Hypothesis_2D.hxx"
-#include "NETGENPlugin_DriverParam.hxx"
#include <SMDS_MeshElement.hxx>
#include <SMDS_MeshNode.hxx>
#include <StdMeshers_MaxElementArea.hxx>
#include <StdMeshers_QuadranglePreference.hxx>
#include <StdMeshers_ViscousLayers2D.hxx>
-#include "SMESH_DriverShape.hxx"
-#include "SMESH_DriverMesh.hxx"
-
#include <Precision.hxx>
#include <Standard_ErrorHandler.hxx>
#include <vector>
#include <limits>
-#include <cstdlib>
-#include <boost/filesystem.hpp>
-namespace fs = boost::filesystem;
/*
Netgen include files
*/
using namespace netgen;
using namespace nglib;
-
//=============================================================================
/*!
*
_hypParameters = 0;
_progressByTic = -1;
-
const list<const SMESHDS_Hypothesis*>& hyps = GetUsedHypothesis(aMesh, aShape, false);
if (hyps.empty())
// }
// }
-
-// write in a binary file the orientation for each 2D element of the mesh
-void NETGENPlugin_NETGEN_2D_ONLY::exportElementOrientation(SMESH_Mesh& aMesh,
- const TopoDS_Shape& aShape,
- netgen_params& aParams,
- const std::string output_file)
-{
- std::map<vtkIdType, bool> elemOrientation;
-
- SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
- for ( TopExp_Explorer exEd( aShape, TopAbs_EDGE ); exEd.More(); exEd.Next())
- {
- const TopoDS_Shape& aShapeEdge = exEd.Current();
- const SMESHDS_SubMesh * aSubMeshDSEdge = proxyMesh->GetSubMesh( aShapeEdge );
- if ( !aSubMeshDSEdge ) continue;
-
- SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSEdge->GetElements();
- while ( iteratorElem->more() ) // loop on elements on a geom face
- {
- const SMDS_MeshElement* elem = iteratorElem->next();
- elemOrientation[elem->GetID()] = aShapeEdge.Orientation() == TopAbs_INTERNAL;
- }
- }
-
- 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();
-}
-
-void NETGENPlugin_NETGEN_2D_ONLY::FillParameters(const NETGENPlugin_Hypothesis* hyp, netgen_params &aParams)
-{
- //TODO: factorize code with the one from NETGEN3D
- // Move in netgen_param ?
- aParams.maxh = hyp->GetMaxSize();
- aParams.minh = hyp->GetMinSize();
- aParams.segmentsperedge = hyp->GetNbSegPerEdge();
- aParams.grading = hyp->GetGrowthRate();
- aParams.curvaturesafety = hyp->GetNbSegPerRadius();
- aParams.secondorder = hyp->GetSecondOrder() ? 1 : 0;
- aParams.quad = hyp->GetQuadAllowed() ? 1 : 0;
- aParams.optimize = hyp->GetOptimize();
- aParams.fineness = hyp->GetFineness();
- aParams.uselocalh = hyp->GetSurfaceCurvature();
- aParams.merge_solids = hyp->GetFuseEdges();
- aParams.chordalError = hyp->GetChordalErrorEnabled() ? hyp->GetChordalError() : -1.;
- aParams.optsteps2d = aParams.optimize ? hyp->GetNbSurfOptSteps() : 0;
- aParams.optsteps3d = aParams.optimize ? hyp->GetNbVolOptSteps() : 0;
- aParams.elsizeweight = hyp->GetElemSizeWeight();
- aParams.opterrpow = hyp->GetWorstElemMeasure();
- aParams.delaunay = hyp->GetUseDelauney();
- aParams.checkoverlap = hyp->GetCheckOverlapping();
- aParams.checkchartboundary = hyp->GetCheckChartBoundary();
-#ifdef NETGEN_V6
- // std::string
- aParams.meshsizefilename = hyp->GetMeshSizeFile();
-#else
- // const char*
- aParams.meshsizefilename = hyp->GetMeshSizeFile().empty() ? 0 : hyp->GetMeshSizeFile().c_str();
-#endif
-#ifdef NETGEN_V6
- aParams.closeedgefac = 2;
-#else
- aParams.closeedgefac = 0;
-#endif
- aParams.has_LengthFromEdges_hyp = _hypLengthFromEdges;
-}
-//=============================================================================
-/*!
- *Here we are going to use the NETGEN mesher remotely
- */
-//=============================================================================
-
-bool NETGENPlugin_NETGEN_2D_ONLY::RemoteCompute(SMESH_Mesh& aMesh,
- const TopoDS_Shape& aShape)
-{
- aMesh.Lock();
- SMESH_Hypothesis::Hypothesis_Status hypStatus;
- CheckHypothesis(aMesh, aShape, hypStatus);
-
- // Temporary folder for run
- fs::path tmp_folder = aMesh.tmp_folder / fs::unique_path(fs::path("Face-%%%%-%%%%"));
- fs::create_directories(tmp_folder);
- // Using MESH2D generated after all triangles where created.
- fs::path mesh_file=aMesh.tmp_folder / fs::path("Mesh1D.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");
- // TODO: Remove that file we do not use it
- fs::path output_mesh_file=tmp_folder / fs::path("output_mesh.med");
- fs::path shape_file=tmp_folder / fs::path("shape.step");
- fs::path param_file=tmp_folder / fs::path("netgen2d_param.txt");
- fs::path log_file=tmp_folder / fs::path("run.log");
-
- //Writing Shape
- exportShape(shape_file.string(), aShape);
- //Writing hypo
- netgen_params aParams;
- FillParameters(_hypParameters, aParams);
-
- exportNetgenParams(param_file.string(), aParams);
-
- // Exporting element orientation
- exportElementOrientation(aMesh, aShape, aParams, element_orientation_file.string());
-
- aMesh.Unlock();
- // Calling run_mesher
- // TODO: check if we need to handle the .exe for windows
- std::string cmd;
- fs::path run_mesher_exe =
- fs::path(std::getenv("NETGENPLUGIN_ROOT_DIR"))/
- fs::path("bin")/
- fs::path("salome")/
- fs::path("NETGENPlugin_Runner");
- cmd = run_mesher_exe.string() +
- " NETGEN2D " + mesh_file.string() + " "
- + shape_file.string() + " "
- + param_file.string() + " "
- + element_orientation_file.string() + " "
- + new_element_file.string() + " "
- + std::to_string(0) + " "
- + output_mesh_file.string() +
- " >> " + log_file.string();
-
- MESSAGE("Running command: ");
- MESSAGE(cmd);
-
- // Writing command in log
- std::ofstream flog(log_file.string());
- flog << cmd << endl;
- flog.close();
-
- // TODO: Replace system by something else to handle redirection for windows
- int ret = system(cmd.c_str());
-
- // TODO: better error handling (display log ?)
- if(ret != 0){
- // Run crahed
- //throw Exception("Meshing failed");
- std::cerr << "Issue with command: " << std::endl;
- std::cerr << cmd << std::endl;
- return false;
- }
-
- aMesh.Lock();
- std::ifstream df(new_element_file.string(), ios::binary);
-
- int Netgen_NbOfNodes;
- int Netgen_NbOfNodesNew;
- int Netgen_NbOfTria;
- double Netgen_point[3];
- int Netgen_triangle[3];
- int nodeID;
-
- SMESH_MesherHelper helper(aMesh);
- // This function is necessary so that SetElementOnShape works
- int _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
- helper.SetElementsOnShape( true );
-
- // Number of nodes in intial mesh
- df.read((char*) &Netgen_NbOfNodes, sizeof(int));
- // Number of nodes added by netgen
- df.read((char*) &Netgen_NbOfNodesNew, sizeof(int));
-
- // Filling nodevec (correspondence netgen numbering mesh numbering)
- vector< const SMDS_MeshNode* > nodeVec ( Netgen_NbOfNodesNew + 1 );
- for (int nodeIndex = 1 ; nodeIndex <= Netgen_NbOfNodes; ++nodeIndex )
- {
- //Id of the point
- df.read((char*) &nodeID, sizeof(int));
- nodeVec.at(nodeIndex) = nullptr;
- SMDS_NodeIteratorPtr iteratorNode = aMesh.GetMeshDS()->nodesIterator();
- while(iteratorNode->more()){
- const SMDS_MeshNode* node = iteratorNode->next();
- if(node->GetID() == nodeID){
- nodeVec.at(nodeIndex) = node;
- break;
- }
- }
- if(nodeVec.at(nodeIndex) == nullptr){
- std::cerr << "Error could not identify id";
- return true;
- }
- }
-
- // Add new points and update nodeVec
- for (int nodeIndex = Netgen_NbOfNodes +1 ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
- {
- df.read((char *) &Netgen_point, sizeof(double)*3);
-
- nodeVec.at(nodeIndex) = helper.AddNode(Netgen_point[0],
- Netgen_point[1],
- Netgen_point[2]);
- }
-
- // Add tetrahedrons
- df.read((char*) &Netgen_NbOfTria, sizeof(int));
- for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTria; ++elemIndex )
- {
- df.read((char*) &Netgen_triangle, sizeof(int)*3);
- helper.AddFace (nodeVec.at( Netgen_triangle[0] ),
- nodeVec.at( Netgen_triangle[1] ),
- nodeVec.at( Netgen_triangle[2] ));
- }
- df.close();
-
- aMesh.Unlock();
-
- return true;
-}
//=============================================================================
/*!
*Here we are going to use the NETGEN mesher
bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape)
{
-
- if(aMesh.IsParallel())
- return RemoteCompute(aMesh, aShape);
-
netgen::multithread.terminate = 0;
- netgen::multithread.task = "Surface meshing";
+ //netgen::multithread.task = "Surface meshing";
SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
SMESH_MesherHelper helper(aMesh);
// else
// min = aMesher.GetDefaultMinSize()
// max = max segment len of a FACE
+
NETGENPlugin_Mesher aMesher( &aMesh, aShape, /*isVolume=*/false);
aMesher.SetParameters( _hypParameters ); // _hypParameters -> netgen::mparam
const bool toOptimize = _hypParameters ? _hypParameters->GetOptimize() : true;
// local size is common for all FACEs in aShape?
const bool isCommonLocalSize = ( !_hypLengthFromEdges && !_hypMaxElementArea && netgen::mparam.uselocalh );
const bool isDefaultHyp = ( !_hypLengthFromEdges && !_hypMaxElementArea && !_hypParameters );
- aMesh.Unlock();
-
if ( isCommonLocalSize ) // compute common local size in ngMeshes[0]
{
netgen::OCCParameters occparam;
netgen::OCCSetLocalMeshSize( occgeoComm, *ngMeshes[0], netgen::mparam, occparam );
#else
- aMesh.Lock();
netgen::OCCSetLocalMeshSize( occgeoComm, *ngMeshes[0] );
- aMesh.Unlock();
#endif
occgeoComm.emap.Clear();
occgeoComm.vmap.Clear();
aMesher.SetLocalSize( occgeoComm, *ngMeshes[0] );
aMesher.SetLocalSizeForChordalError( occgeoComm, *ngMeshes[0] );
try {
- ngMeshes[0]->LoadLocalMeshSize( netgen::mparam.meshsizefilename );
+ ngMeshes[0]->LoadLocalMeshSize( mparam.meshsizefilename );
} catch (NgException & ex) {
return error( COMPERR_BAD_PARMETERS, ex.What() );
}
}
netgen::mparam.uselocalh = toOptimize; // restore as it is used at surface optimization
+
// ==================
// Loop on all FACEs
// ==================
if ( iLoop == NO_LOC_SIZE )
{
- ngMesh->SetGlobalH ( netgen::mparam.maxh );
- ngMesh->SetMinimalH( netgen::mparam.minh );
+ ngMesh->SetGlobalH ( mparam.maxh );
+ ngMesh->SetMinimalH( mparam.minh );
Box<3> bb = occgeom.GetBoundingBox();
bb.Increase (bb.Diam()/10);
- ngMesh->SetLocalH (bb.PMin(), bb.PMax(), netgen::mparam.grading);
+ ngMesh->SetLocalH (bb.PMin(), bb.PMax(), mparam.grading);
aMesher.SetLocalSize( occgeom, *ngMesh );
aMesher.SetLocalSizeForChordalError( occgeoComm, *ngMesh );
try {
- ngMesh->LoadLocalMeshSize( netgen::mparam.meshsizefilename );
+ ngMesh->LoadLocalMeshSize( mparam.meshsizefilename );
} catch (NgException & ex) {
return error( COMPERR_BAD_PARMETERS, ex.What() );
}
break;
//if ( !isCommonLocalSize )
- //limitSize( ngMesh, netgen::mparam.maxh * 0.8);
+ //limitSize( ngMesh, mparam.maxh * 0.8);
// -------------------------
// Generate surface mesh
SMESH_Comment str;
try {
OCC_CATCH_SIGNALS;
+
err = ngLib.GenerateMesh(occgeom, startWith, endWith, ngMesh);
+
if ( netgen::multithread.terminate )
return false;
if ( err )
double segLen = p.Distance( uvPtVec[ iP-1 ].node );
double size = ngMesh->GetH( np );
netgen::mparam.minh = Min( netgen::mparam.minh, size );
- netgen:: mparam.maxh = Max( netgen::mparam.maxh, segLen );
+ netgen::mparam.maxh = Max( netgen::mparam.maxh, segLen );
}
}
- //cerr << "min " << mparam.minh << " max " << mparam.maxh << endl;
+ //cerr << "min " << netgen::mparam.minh << " max " << netgen::mparam.maxh << endl;
netgen::mparam.minh *= 0.9;
netgen::mparam.maxh *= 1.1;
continue;
}
}
+
// ----------------------------------------------------
// Fill the SMESHDS with the generated nodes and faces
// ----------------------------------------------------
