#include "NETGENPlugin_Hypothesis.hxx"
-#include "DriverStep.hxx"
-#include "DriverMesh.hxx"
-#include "netgen_param.hxx"
+// TODO: remove use of netgen_param
+#include "NETGENPlugin_DriverParam.hxx"
#include <SMDS_MeshElement.hxx>
#include <SMDS_MeshNode.hxx>
#include <StdMeshers_ViscousLayers.hxx>
#include <SMESH_subMesh.hxx>
+
#include <BRepGProp.hxx>
#include <BRep_Tool.hxx>
#include <GProp_GProps.hxx>
#include <map>
#include <cstdlib>
-#include <boost/filesystem.hpp>
-namespace fs = boost::filesystem;
/*
Netgen include files
}
-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
-}
-// write 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)
+//=============================================================================
+/*!
+ *Here we are going to use the NETGEN mesher
+ */
+//=============================================================================
+
+/**
+ * @brief Get an iterator on the Surface element with their orientation
+ *
+ */
+
+bool NETGENPlugin_NETGEN_3D::getSurfaceElements(
+ SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape,
+ SMESH_ProxyMesh::Ptr proxyMesh,
+ NETGENPlugin_Internals &internals,
+ SMESH_MesherHelper &helper,
+ netgen_params &aParams,
+ std::map<const SMDS_MeshElement*, tuple<bool, bool>>& listElements
+)
{
- SMESH_MesherHelper helper(aMesh);
- NETGENPlugin_Internals internals( aMesh, aShape, /*is3D=*/true );
- SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
- std::map<vtkIdType, bool> elemOrientation;
+ SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
+ TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
+ bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
{
const TopoDS_Shape& aShapeFace = exFa.Current();
- int faceID = aMesh.GetMeshDS()->ShapeToIndex( aShapeFace );
+ int faceID = meshDS->ShapeToIndex( aShapeFace );
bool isInternalFace = internals.isInternalShape( faceID );
bool isRev = false;
- if ( !isInternalFace &&
+ if ( checkReverse && !isInternalFace &&
helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
// IsReversedSubMesh() can work wrong on strongly curved faces,
// so we use it as less as possible
iteratorElem = aSubMeshDSFace->GetElements();
}
- while ( iteratorElem->more() ) // loop on elements on a geom face
- {
- // check mesh face
+ while(iteratorElem->more()){
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();
- auto time0 = std::chrono::high_resolution_clock::now();
- SMESH_Hypothesis::Hypothesis_Status hypStatus;
- CheckHypothesis(aMesh, aShape, hypStatus);
- auto time1 = std::chrono::high_resolution_clock::now();
- auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time1-time0);
- std::cout << "Time for check_hypo: " << elapsed.count() * 1e-9 << std::endl;
-
-
- // 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);
- auto time2 = std::chrono::high_resolution_clock::now();
- elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time2-time1);
- std::cout << "Time for export_shape: " << elapsed.count() * 1e-9 << std::endl;
-
- //Writing hypo
- netgen_params aParams;
- FillParameters(_hypParameters, aParams);
-
- export_netgen_params(param_file.string(), aParams);
- auto time3 = std::chrono::high_resolution_clock::now();
- elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time3-time2);
- std::cout << "Time for fill+export param: " << elapsed.count() * 1e-9 << std::endl;
-
- // Exporting element orientation
- exportElementOrientation(aMesh, aShape, aParams, element_orientation_file.string());
- auto time4 = std::chrono::high_resolution_clock::now();
- elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time4-time3);
- std::cout << "Time for exportElemnOrient: " << elapsed.count() * 1e-9 << std::endl;
-
- 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());
- auto time5 = std::chrono::high_resolution_clock::now();
- elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time5-time4);
- std::cout << "Time for exec of run_mesher: " << elapsed.count() * 1e-9 << std::endl;
-
- // TODO: better error handling (display log ?)
- if(ret != 0){
- // Run crahed
- 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 );
- //vector<int> nodeTmpVec ( Netgen_NbOfNodesNew + 1 );
- SMESHDS_Mesh * meshDS = helper.GetMeshDS();
- for (int nodeIndex = 1 ; nodeIndex <= Netgen_NbOfNodes; ++nodeIndex )
- {
- //Id of the point
- df.read((char*) &nodeID, sizeof(int));
- nodeVec.at(nodeIndex) = meshDS->FindNode(nodeID);
- }
-
- auto time6 = std::chrono::high_resolution_clock::now();
- elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time6-time5);
- std::cout << "Time for exec of nodeVec: " << elapsed.count() * 1e-9 << std::endl;
-
-
- // 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] ));
+ // check mesh face
+ if ( !elem ){
+ aParams._error = COMPERR_BAD_INPUT_MESH;
+ aParams._comment = "Null element encounters";
+ return true;
+ }
+ if ( elem->NbCornerNodes() != 3 ){
+ aParams._error = COMPERR_BAD_INPUT_MESH;
+ aParams._comment = "Not triangle element encounters";
+ return true;
+ }
+ listElements[elem] = tuple(isRev, isInternalFace);
+ }
}
- df.close();
- auto time7 = std::chrono::high_resolution_clock::now();
- elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time7-time6);
- std::cout << "Time for exec of add_in_mesh: " << elapsed.count() * 1e-9 << std::endl;
-
- fs::remove_all(tmp_folder);
- aMesh.Unlock();
- return true;
+ return false;
}
-//=============================================================================
-/*!
- *Here we are going to use the NETGEN mesher
- */
-//=============================================================================
-bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
- const TopoDS_Shape& aShape)
+bool NETGENPlugin_NETGEN_3D::computeFillNgMesh(
+ SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape,
+ vector< const SMDS_MeshNode* > &nodeVec,
+ NETGENPlugin_NetgenLibWrapper &ngLib,
+ SMESH_MesherHelper &helper,
+ netgen_params &aParams,
+ int &Netgen_NbOfNodes)
{
- if(aMesh.IsParallel())
- return RemoteCompute(aMesh, aShape);
- auto time0 = std::chrono::high_resolution_clock::now();
-
netgen::multithread.terminate = 0;
netgen::multithread.task = "Volume meshing";
- _progressByTic = -1.;
+ aParams._progressByTic = -1.;
SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
- SMESH_MesherHelper helper(aMesh);
- _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
+ aParams._quadraticMesh = helper.IsQuadraticSubMesh(aShape);
helper.SetElementsOnShape( true );
- int Netgen_NbOfNodes = 0;
+ Netgen_NbOfNodes = 0;
double Netgen_point[3];
int Netgen_triangle[3];
- NETGENPlugin_NetgenLibWrapper ngLib;
Ng_Mesh * Netgen_mesh = (Ng_Mesh*)ngLib._ngMesh;
- // vector of nodes in which node index == netgen ID
- vector< const SMDS_MeshNode* > nodeVec;
{
const int invalid_ID = -1;
// ---------------------------------
// Feed the Netgen with surface mesh
// ---------------------------------
-
- TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
- bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
+ bool isRev=false;
+ bool isInternalFace=false;
SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
- if ( _viscousLayersHyp )
+ if ( aParams._viscousLayersHyp )
{
netgen::multithread.percent = 3;
- proxyMesh = _viscousLayersHyp->Compute( aMesh, aShape );
+ proxyMesh = aParams._viscousLayersHyp->Compute( aMesh, aShape );
if ( !proxyMesh )
return false;
}
proxyMesh.reset( Adaptor );
}
- for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
+ std::map<const SMDS_MeshElement*, tuple<bool, bool>> listElements;
+ bool ret = getSurfaceElements(aMesh, aShape, proxyMesh, internals, helper, aParams, listElements);
+ if(ret)
+ return ret;
+
+ for ( auto const& [elem, info] : listElements ) // loop on elements on a geom face
{
- const TopoDS_Shape& aShapeFace = exFa.Current();
- int faceID = meshDS->ShapeToIndex( aShapeFace );
- bool isInternalFace = internals.isInternalShape( faceID );
- bool isRev = false;
- if ( checkReverse && !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 ( _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() ));
+ isRev = get<0>(info);
+ isInternalFace = get<1>(info);
+ // Add nodes of triangles and triangles them-selves to netgen mesh
- iteratorElem = aSubMeshDSFace->GetElements();
- }
- while ( iteratorElem->more() ) // loop on elements on a geom face
+ // add three nodes of triangle
+ bool hasDegen = false;
+ for ( int iN = 0; iN < 3; ++iN )
{
- // check mesh face
- const SMDS_MeshElement* elem = iteratorElem->next();
- if ( !elem )
- return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
- if ( elem->NbCornerNodes() != 3 )
- return error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
-
- // Add nodes of triangles and triangles them-selves to netgen mesh
-
- // add three nodes of triangle
- bool hasDegen = false;
- for ( int iN = 0; iN < 3; ++iN )
+ const SMDS_MeshNode* node = elem->GetNode( iN );
+ const int shapeID = node->getshapeId();
+ if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_EDGE &&
+ helper.IsDegenShape( shapeID ))
{
- const SMDS_MeshNode* node = elem->GetNode( iN );
- const int shapeID = node->getshapeId();
- if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_EDGE &&
- helper.IsDegenShape( shapeID ))
- {
- // ignore all nodes on degeneraged edge and use node on its vertex instead
- TopoDS_Shape vertex = TopoDS_Iterator( meshDS->IndexToShape( shapeID )).Value();
- node = SMESH_Algo::VertexNode( TopoDS::Vertex( vertex ), meshDS );
- hasDegen = true;
- }
- int& ngID = nodeToNetgenID.insert(TN2ID( node, invalid_ID )).first->second;
- if ( ngID == invalid_ID )
- {
- ngID = ++Netgen_NbOfNodes;
- Netgen_point [ 0 ] = node->X();
- Netgen_point [ 1 ] = node->Y();
- Netgen_point [ 2 ] = node->Z();
- Ng_AddPoint(Netgen_mesh, Netgen_point);
- }
- Netgen_triangle[ isRev ? 2-iN : iN ] = ngID;
+ // ignore all nodes on degeneraged edge and use node on its vertex instead
+ TopoDS_Shape vertex = TopoDS_Iterator( meshDS->IndexToShape( shapeID )).Value();
+ node = SMESH_Algo::VertexNode( TopoDS::Vertex( vertex ), meshDS );
+ hasDegen = true;
}
- // add triangle
- if ( hasDegen && (Netgen_triangle[0] == Netgen_triangle[1] ||
- Netgen_triangle[0] == Netgen_triangle[2] ||
- Netgen_triangle[2] == Netgen_triangle[1] ))
- continue;
-
- Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
-
- if ( isInternalFace && !proxyMesh->IsTemporary( elem ))
+ int& ngID = nodeToNetgenID.insert(TN2ID( node, invalid_ID )).first->second;
+ if ( ngID == invalid_ID )
{
- swap( Netgen_triangle[1], Netgen_triangle[2] );
- Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
+ ngID = ++Netgen_NbOfNodes;
+ Netgen_point [ 0 ] = node->X();
+ Netgen_point [ 1 ] = node->Y();
+ Netgen_point [ 2 ] = node->Z();
+ Ng_AddPoint(Netgen_mesh, Netgen_point);
}
- } // loop on elements on a face
- } // loop on faces of a SOLID or SHELL
+ Netgen_triangle[ isRev ? 2-iN : iN ] = ngID;
+ }
+ // add triangle
+ if ( hasDegen && (Netgen_triangle[0] == Netgen_triangle[1] ||
+ Netgen_triangle[0] == Netgen_triangle[2] ||
+ Netgen_triangle[2] == Netgen_triangle[1] ))
+ continue;
+
+ Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
+
+ if ( isInternalFace && !proxyMesh->IsTemporary( elem ))
+ {
+ swap( Netgen_triangle[1], Netgen_triangle[2] );
+ Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
+ }
+ } // loop on elements on a face
// insert old nodes into nodeVec
nodeVec.resize( nodeToNetgenID.size() + 1, 0 );
internals);
}
}
+ Netgen_NbOfNodes = Ng_GetNP( Netgen_mesh );
+ return false;
+}
- // -------------------------
- // Generate the volume mesh
- // -------------------------
- auto time1 = std::chrono::high_resolution_clock::now();
- auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time1-time0);
- std::cout << "Time for seq:fill_in_ngmesh: " << elapsed.count() * 1e-9 << std::endl;
+bool NETGENPlugin_NETGEN_3D::computePrepareParam(
+ SMESH_Mesh& aMesh,
+ NETGENPlugin_NetgenLibWrapper &ngLib,
+ netgen::OCCGeometry &occgeo,
+ SMESH_MesherHelper &helper,
+ netgen_params &aParams,
+ int &endWith)
+
+{
+ netgen::multithread.terminate = 0;
+
+ netgen::Mesh* ngMesh = ngLib._ngMesh;
+
+ NETGENPlugin_Mesher aMesher( &aMesh, helper.GetSubShape(), /*isVolume=*/true );
+
+
+ if ( aParams._hypParameters )
+ {
+ aMesher.SetParameters( aParams._hypParameters );
- return (ngLib._isComputeOk = compute( aMesh, helper, nodeVec, ngLib ));
+ if ( !aParams._hypParameters->GetLocalSizesAndEntries().empty() ||
+ !aParams._hypParameters->GetMeshSizeFile().empty() )
+ {
+ if ( ! &ngMesh->LocalHFunction() )
+ {
+ netgen::Point3d pmin, pmax;
+ ngMesh->GetBox( pmin, pmax, 0 );
+ ngMesh->SetLocalH( pmin, pmax, aParams._hypParameters->GetGrowthRate() );
+ }
+ aMesher.SetLocalSize( occgeo, *ngMesh );
+
+ try {
+ ngMesh->LoadLocalMeshSize( netgen::mparam.meshsizefilename );
+ } catch (netgen::NgException & ex) {
+ aParams._error = COMPERR_BAD_PARMETERS;
+ aParams._comment = ex.What();
+ return false;
+ }
+ }
+ if ( !aParams._hypParameters->GetOptimize() )
+ endWith = netgen::MESHCONST_MESHVOLUME;
+ }
+ else if ( aParams._hypMaxElementVolume )
+ {
+ netgen::mparam.maxh = pow( 72, 1/6. ) * pow( aParams.maxElementVolume, 1/3. );
+ // limitVolumeSize( ngMesh, mparam.maxh ); // result is unpredictable
+ }
+ else if ( aMesh.HasShapeToMesh() )
+ {
+ aMesher.PrepareOCCgeometry( occgeo, helper.GetSubShape(), aMesh );
+ netgen::mparam.maxh = occgeo.GetBoundingBox().Diam()/2;
+ }
+ else
+ {
+ netgen::Point3d pmin, pmax;
+ ngMesh->GetBox (pmin, pmax);
+ netgen::mparam.maxh = Dist(pmin, pmax)/2;
+ }
+
+ if ( !aParams._hypParameters && aMesh.HasShapeToMesh() )
+ {
+ netgen::mparam.minh = aMesher.GetDefaultMinSize( helper.GetSubShape(), netgen::mparam.maxh );
+ }
+ return false;
+}
+
+bool NETGENPlugin_NETGEN_3D::computeRunMesher(
+ netgen::OCCGeometry &occgeo,
+ vector< const SMDS_MeshNode* > &nodeVec,
+ netgen::Mesh* ngMesh,
+ NETGENPlugin_NetgenLibWrapper &ngLib,
+ netgen_params &aParams,
+ int &startWith, int &endWith)
+{
+ int err = 1;
+
+ try
+ {
+ OCC_CATCH_SIGNALS;
+
+ ngLib.CalcLocalH(ngMesh);
+ err = ngLib.GenerateMesh(occgeo, startWith, endWith);
+
+ if(netgen::multithread.terminate)
+ return false;
+ if ( err ){
+ aParams._comment = SMESH_Comment("Error in netgen::OCCGenerateMesh() at ") << netgen::multithread.task;
+ return true;
+ }
+ }
+ catch (Standard_Failure& ex)
+ {
+ SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
+ str << " at " << netgen::multithread.task
+ << ": " << ex.DynamicType()->Name();
+ if ( ex.GetMessageString() && strlen( ex.GetMessageString() ))
+ str << ": " << ex.GetMessageString();
+ aParams._comment = str;
+ return true;
+ }
+ catch (netgen::NgException& exc)
+ {
+ SMESH_Comment str("NgException");
+ if ( strlen( netgen::multithread.task ) > 0 )
+ str << " at " << netgen::multithread.task;
+ str << ": " << exc.What();
+ aParams._comment = str;
+ return true;
+ }
+ catch (...)
+ {
+ SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
+ if ( strlen( netgen::multithread.task ) > 0 )
+ str << " at " << netgen::multithread.task;
+ aParams._comment = str;
+ return true;
+ }
+
+ if ( err )
+ {
+ SMESH_ComputeErrorPtr ce = NETGENPlugin_Mesher::ReadErrors(nodeVec);
+ if ( ce && ce->HasBadElems() ){
+ aParams._error = ce->myName;
+ aParams._comment = ce->myComment;
+ return true;
+ }
+ }
+
+ return false;
+}
+
+bool NETGENPlugin_NETGEN_3D::computeFillMesh(
+ vector< const SMDS_MeshNode* > &nodeVec,
+ NETGENPlugin_NetgenLibWrapper &ngLib,
+ SMESH_MesherHelper &helper,
+ int &Netgen_NbOfNodes
+ )
+{
+ Ng_Mesh* Netgen_mesh = ngLib.ngMesh();
+
+ int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
+ int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
+
+ bool isOK = ( /*status == NG_OK &&*/ Netgen_NbOfTetra > 0 );// get whatever built
+ if ( isOK )
+ {
+ double Netgen_point[3];
+ int Netgen_tetrahedron[4];
+
+ // create and insert new nodes into nodeVec
+ nodeVec.resize( Netgen_NbOfNodesNew + 1, 0 );
+ int nodeIndex = Netgen_NbOfNodes + 1;
+ for ( ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
+ {
+ Ng_GetPoint( Netgen_mesh, nodeIndex, Netgen_point );
+ nodeVec.at(nodeIndex) = helper.AddNode(Netgen_point[0], Netgen_point[1], Netgen_point[2]);
+ }
+
+ // create tetrahedrons
+ for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
+ {
+ Ng_GetVolumeElement(Netgen_mesh, elemIndex, Netgen_tetrahedron);
+ try
+ {
+ helper.AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
+ nodeVec.at( Netgen_tetrahedron[1] ),
+ nodeVec.at( Netgen_tetrahedron[2] ),
+ nodeVec.at( Netgen_tetrahedron[3] ));
+ }
+ catch (...)
+ {
+ }
+ }
+ }
+ return false;
}
-// namespace
-// {
-// void limitVolumeSize( netgen::Mesh* ngMesh,
-// double maxh )
-// {
-// // get average h of faces
-// double faceh = 0;
-// int nbh = 0;
-// for (int i = 1; i <= ngMesh->GetNSE(); i++)
-// {
-// const netgen::Element2d& face = ngMesh->SurfaceElement(i);
-// for (int j=1; j <= face.GetNP(); ++j)
-// {
-// const netgen::PointIndex & i1 = face.PNumMod(j);
-// const netgen::PointIndex & i2 = face.PNumMod(j+1);
-// if ( i1 < i2 )
-// {
-// const netgen::Point3d & p1 = ngMesh->Point( i1 );
-// const netgen::Point3d & p2 = ngMesh->Point( i2 );
-// faceh += netgen::Dist2( p1, p2 );
-// nbh++;
-// }
-// }
-// }
-// faceh = Sqrt( faceh / nbh );
-
-// double compareh;
-// if ( faceh < 0.5 * maxh ) compareh = -1;
-// else if ( faceh > 1.5 * maxh ) compareh = 1;
-// else compareh = 0;
-// // cerr << "faceh " << faceh << endl;
-// // cerr << "init maxh " << maxh << endl;
-// // cerr << "compareh " << compareh << endl;
-
-// if ( compareh > 0 )
-// maxh *= 1.2;
-// else
-// maxh *= 0.8;
-// // cerr << "maxh " << maxh << endl;
-
-// // get bnd box
-// netgen::Point3d pmin, pmax;
-// ngMesh->GetBox( pmin, pmax, 0 );
-// const double dx = pmax.X() - pmin.X();
-// const double dy = pmax.Y() - pmin.Y();
-// const double dz = pmax.Z() - pmin.Z();
-
-// if ( ! & ngMesh->LocalHFunction() )
-// ngMesh->SetLocalH( pmin, pmax, compareh <= 0 ? 0.1 : 0.5 );
-
-// // adjusted by SALOME_TESTS/Grids/smesh/bugs_08/I8
-// const int nbX = Max( 2, int( dx / maxh * 2 ));
-// const int nbY = Max( 2, int( dy / maxh * 2 ));
-// const int nbZ = Max( 2, int( dz / maxh * 2 ));
-
-// netgen::Point3d p;
-// for ( int i = 0; i <= nbX; ++i )
-// {
-// p.X() = pmin.X() + i * dx / nbX;
-// for ( int j = 0; j <= nbY; ++j )
-// {
-// p.Y() = pmin.Y() + j * dy / nbY;
-// for ( int k = 0; k <= nbZ; ++k )
-// {
-// p.Z() = pmin.Z() + k * dz / nbZ;
-// ngMesh->RestrictLocalH( p, maxh );
-// }
-// }
-// }
-// }
-// }
+bool NETGENPlugin_NETGEN_3D::Compute(
+ SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape)
+{
+ // vector of nodes in which node index == netgen ID
+ vector< const SMDS_MeshNode* > nodeVec;
+ NETGENPlugin_NetgenLibWrapper ngLib;
+ SMESH_MesherHelper helper(aMesh);
+ int startWith = netgen::MESHCONST_MESHVOLUME;
+ int endWith = netgen::MESHCONST_OPTVOLUME;
+ int Netgen_NbOfNodes;
+
+ netgen_params aParams;
+
+ aParams._hypParameters = const_cast<NETGENPlugin_Hypothesis*>(_hypParameters);
+ aParams._hypMaxElementVolume = const_cast<StdMeshers_MaxElementVolume*>(_hypMaxElementVolume);
+ aParams.maxElementVolume = _maxElementVolume;
+ aParams._progressByTic = _progressByTic;
+ aParams._quadraticMesh = _quadraticMesh;
+ aParams._viscousLayersHyp = const_cast<StdMeshers_ViscousLayers*>(_viscousLayersHyp);
+
+ bool ret;
+ ret = computeFillNgMesh(aMesh, aShape, nodeVec, ngLib, helper, aParams, Netgen_NbOfNodes);
+ if(ret)
+ return error( aParams._error, aParams._comment);
+
+ netgen::OCCGeometry occgeo;
+ computePrepareParam(aMesh, ngLib, occgeo, helper, aParams, endWith);
+ ret = computeRunMesher(occgeo, nodeVec, ngLib._ngMesh, ngLib, aParams, startWith, endWith);
+ if(ret){
+ if(aParams._error)
+ return error(aParams._error, aParams._comment);
+
+ error(aParams._comment);
+ return true;
+ }
+ computeFillMesh(nodeVec, ngLib, helper, Netgen_NbOfNodes);
+
+ return false;
+
+}
//================================================================================
/*!
