#include "NETGENPlugin_Hypothesis.hxx"
-#include "DriverStep.hxx"
-#include "DriverMesh.hxx"
-#include "netgen_param.hxx"
-
#include <SMDS_MeshElement.hxx>
#include <SMDS_MeshNode.hxx>
#include <SMESHDS_Mesh.hxx>
#include <StdMeshers_MaxElementVolume.hxx>
#include <StdMeshers_QuadToTriaAdaptor.hxx>
#include <StdMeshers_ViscousLayers.hxx>
-#include <SMESH_subMesh.hxx>
#include <BRepGProp.hxx>
#include <BRep_Tool.hxx>
#include <vector>
#include <map>
-#include <cstdlib>
-#include <boost/filesystem.hpp>
-namespace fs = boost::filesystem;
-
/*
Netgen include files
*/
//=============================================================================
/*!
- *
+ *
*/
//=============================================================================
//=============================================================================
/*!
- *
+ *
*/
//=============================================================================
//=============================================================================
/*!
- *
+ *
*/
//=============================================================================
_maxElementVolume = DBL_MAX;
// for correct work of GetProgress():
- //netgen::multithread.percent = 0.;
- //netgen::multithread.task = "Volume meshing";
+ netgen::multithread.percent = 0.;
+ netgen::multithread.task = "Volume meshing";
_progressByTic = -1.;
list<const SMESHDS_Hypothesis*>::const_iterator itl;
return aStatus == HYP_OK;
}
-
-void NETGENPlugin_NETGEN_3D::FillParameters(const NETGENPlugin_Hypothesis* hyp, netgen_params &aParams)
-{
- 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
-}
-
-// wirte in a binary file the orientation for each 2D element of the mesh
-void NETGENPlugin_NETGEN_3D::exportElementOrientation(SMESH_Mesh& aMesh,
- const TopoDS_Shape& aShape,
- netgen_params& aParams,
- const std::string output_file)
-{
- SMESH_MesherHelper helper(aMesh);
- NETGENPlugin_Internals internals( aMesh, aShape, /*is3D=*/true );
- 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 isInternalFace = internals.isInternalShape( faceID );
- bool isRev = false;
- if ( !isInternalFace &&
- 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();
- if ( aParams._quadraticMesh &&
- dynamic_cast< const SMESH_ProxyMesh::SubMesh*>( aSubMeshDSFace ))
- {
- // add medium nodes of proxy triangles to helper (#16843)
- while ( iteratorElem->more() )
- helper.AddTLinks( static_cast< const SMDS_MeshFace* >( iteratorElem->next() ));
-
- 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();
-}
-
-int NETGENPlugin_NETGEN_3D::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("Volume-%%%%-%%%%"));
- fs::create_directories(tmp_folder);
- // Using MESH2D generated after all triangles where created.
- fs::path mesh_file=aMesh.tmp_folder / 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");
- // 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("netgen3d_param.txt");
- fs::path log_file=tmp_folder / fs::path("run_mesher.log");
- //TODO: Handle variable mesh_name
- std::string mesh_name = "Maillage_1";
-
- //Writing Shape
- export_shape(shape_file.string(), aShape);
- //Writing hypo
- netgen_params aParams;
- FillParameters(_hypParameters, aParams);
-
- export_netgen_params(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("run_mesher");
- cmd = run_mesher_exe.string() +
- " NETGEN3D " + 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();
-
- //std::cout << "Running command: " << std::endl;
- //std::cout << cmd << std::endl;
-
- // 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_NbOfTetra;
- double Netgen_point[3];
- int Netgen_tetrahedron[4];
- int nodeID;
-
- SMESH_MesherHelper helper(aMesh);
- // This function
- 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::cout << "Error could not identify id";
- return false;
- }
- }
-
- // 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_NbOfTetra, sizeof(int));
- for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
- {
- df.read((char*) &Netgen_tetrahedron, sizeof(int)*4);
- helper.AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
- nodeVec.at( Netgen_tetrahedron[1] ),
- nodeVec.at( Netgen_tetrahedron[2] ),
- nodeVec.at( Netgen_tetrahedron[3] ));
- }
- df.close();
-
- aMesh.Unlock();
-
- return true;
-}
-
//=============================================================================
/*!
*Here we are going to use the NETGEN mesher
bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape)
{
- if(aMesh.IsParallel())
- return RemoteCompute(aMesh, aShape);
-
netgen::multithread.terminate = 0;
netgen::multithread.task = "Volume meshing";
_progressByTic = -1.;
// Generate the volume mesh
// -------------------------
- return (ngLib._isComputeOk = compute( aMesh, helper, nodeVec, ngLib ));
+ return ( ngLib._isComputeOk = compute( aMesh, helper, nodeVec, ngLib ));
}
// namespace
else if ( _hypMaxElementVolume )
{
netgen::mparam.maxh = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
- // limitVolumeSize( ngMesh, mparam.maxh ); // result is unpredictable
+ // limitVolumeSize( ngMesh, netgen::mparam.maxh ); // result is unpredictable
}
else if ( aMesh.HasShapeToMesh() )
{
return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
if ( elem->NbCornerNodes() != 3 )
return error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
-
+
// add three nodes of triangle
for ( int iN = 0; iN < 3; ++iN )
{
}
SMESH_subMesh *sm = aMesh.GetSubMesh(aShape);
aResMap.insert(std::make_pair(sm,aVec));
-
+
return true;
}
