-// Copyright (C) 2007-2014 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2022 CEA/DEN, EDF R&D, OPEN CASCADE
//
// Copyright (C) 2003-2007 OPEN CASCADE, EADS/CCR, LIP6, CEA/DEN,
// CEDRAT, EDF R&D, LEG, PRINCIPIA R&D, BUREAU VERITAS
#include "NETGENPlugin_NETGEN_3D.hxx"
#include "NETGENPlugin_Hypothesis.hxx"
+#include "NETGENPlugin_Provider.hxx"
+
+#include "DriverStep.hxx"
+#include "DriverMesh.hxx"
+#include "netgen_param.hxx"
#include <SMDS_MeshElement.hxx>
#include <SMDS_MeshNode.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
*/
#define OCCGEOMETRY
#endif
#include <occgeom.hpp>
+
+#ifdef NETGEN_V5
+#include <ngexception.hpp>
+#endif
+#ifdef NETGEN_V6
+#include <core/exception.hpp>
+#endif
+
namespace nglib {
#include <nglib.h>
}
namespace netgen {
-#ifdef NETGEN_V5
- extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, MeshingParameters&, int, int);
-#else
- extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, int, int, char*);
-#endif
- extern MeshingParameters mparam;
+
+ NETGENPLUGIN_DLL_HEADER
+
+ NETGENPLUGIN_DLL_HEADER
extern volatile multithreadt multithread;
}
using namespace nglib;
//=============================================================================
/*!
- *
+ *
*/
//=============================================================================
-NETGENPlugin_NETGEN_3D::NETGENPlugin_NETGEN_3D(int hypId, int studyId,
- SMESH_Gen* gen)
- : SMESH_3D_Algo(hypId, studyId, gen)
+NETGENPlugin_NETGEN_3D::NETGENPlugin_NETGEN_3D(int hypId, SMESH_Gen* gen)
+ : SMESH_3D_Algo(hypId, gen)
{
- MESSAGE("NETGENPlugin_NETGEN_3D::NETGENPlugin_NETGEN_3D");
_name = "NETGEN_3D";
_shapeType = (1 << TopAbs_SHELL) | (1 << TopAbs_SOLID);// 1 bit /shape type
_compatibleHypothesis.push_back("MaxElementVolume");
//=============================================================================
/*!
- *
+ *
*/
//=============================================================================
NETGENPlugin_NETGEN_3D::~NETGENPlugin_NETGEN_3D()
{
- MESSAGE("NETGENPlugin_NETGEN_3D::~NETGENPlugin_NETGEN_3D");
}
//=============================================================================
/*!
- *
+ *
*/
//=============================================================================
const TopoDS_Shape& aShape,
Hypothesis_Status& aStatus)
{
- MESSAGE("NETGENPlugin_NETGEN_3D::CheckHypothesis");
-
_hypMaxElementVolume = NULL;
_hypParameters = NULL;
_viscousLayersHyp = NULL;
_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;
- const SMESHDS_Hypothesis* theHyp;
+ //const SMESHDS_Hypothesis* theHyp;
const list<const SMESHDS_Hypothesis*>& hyps =
GetUsedHypothesis(aMesh, aShape, /*ignoreAuxiliary=*/false);
{
if ( !_hypMaxElementVolume )
_hypMaxElementVolume = dynamic_cast< const StdMeshers_MaxElementVolume*> ( *h );
- // if ( !_viscousLayersHyp ) several _viscousLayersHyp's allowed
+ if ( !_viscousLayersHyp ) // several _viscousLayersHyp's allowed
_viscousLayersHyp = dynamic_cast< const StdMeshers_ViscousLayers*> ( *h );
if ( ! _hypParameters )
_hypParameters = dynamic_cast< const NETGENPlugin_Hypothesis*> ( *h );
if ( *h != _hypMaxElementVolume &&
*h != _viscousLayersHyp &&
- *h != _hypParameters)
+ *h != _hypParameters &&
+ !dynamic_cast< const StdMeshers_ViscousLayers*>(*h)) // several VL hyps allowed
aStatus = HYP_INCOMPATIBLE;
}
if ( _hypMaxElementVolume && _hypParameters )
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
+}
+
+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;
+ // 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 ))
+ {
+ // 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;
+ }
+ // 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
+ } // loop on faces of a SOLID or SHELL
+
+ std::ofstream df(output_file, ios::out|ios::binary);
+ int size=elemOrientation.size();
+ std::cout << size<< std::endl;
+ std::cout << "vtkIdType " << sizeof(vtkIdType) << std::endl;
+
+ 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();
+ // for(auto const& [id, orient] : elemOrientation)
+ // {
+ // std::cout << id << " : " << orient << ", ";
+ // }
+}
+
+int NETGENPlugin_NETGEN_3D::ParallelCompute(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
+ std::string cmd;
+ // TODO: Add run_meher to bin
+ std::string run_mesher_exe = "/home/B61570/work_in_progress/ssmesh/run_mesher/build/src/run_mesher";
+ cmd = run_mesher_exe +
+ " NETGEN3D " + mesh_file.string() + " "
+ + shape_file.string() + " "
+ + param_file.string() + " "
+ + element_orientation_file.string() + " "
+ + new_element_file.string() + " "
+ + 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();
+
+ int ret = system(cmd.c_str());
+
+ // TODO: error handling
+ 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 );
+
+ // Filling nodevec (correspondence netgen numbering mesh numbering)
+ // Number of nodes
+ df.read((char*) &Netgen_NbOfNodes, sizeof(int));
+ df.read((char*) &Netgen_NbOfNodesNew, sizeof(int));
+
+ 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));
+ // std::cout << "Old Node " << nodeIndex << ": " << nodeID << std::endl;
+ // TODO: do stuff to fill nodeVec ??
+ 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;
+ }
+ }
+
+ // Writing info on new points
+ for (int nodeIndex = Netgen_NbOfNodes +1 ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
+ {
+ // Coordinates of the point
+ df.read((char *) &Netgen_point, sizeof(double)*3);
+ // std::cout << "Node " << nodeIndex << ": ";
+ // for(auto coord:Netgen_point){
+ // std::cout << coord << " ";
+ // }
+ // std::cout << std::endl;
+ nodeVec.at(nodeIndex) = helper.AddNode(Netgen_point[0],
+ Netgen_point[1],
+ Netgen_point[2]);
+
+ }
+
+ // create tetrahedrons
+ df.read((char*) &Netgen_NbOfTetra, sizeof(int));
+ for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
+ {
+ df.read((char*) &Netgen_tetrahedron, sizeof(int)*4);
+ // std::cout << "Element " << elemIndex << ": ";
+ // for(auto elem:Netgen_tetrahedron){
+ // std::cout << elem << " ";
+ // }
+ // std::cout << std::endl;
+ // TODO: Add tetra
+ 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)
{
- netgen::multithread.terminate = 0;
- netgen::multithread.task = "Volume meshing";
+
+ return ParallelCompute(aMesh, aShape);
+ aMesh.Lock();
+ SMESH_Hypothesis::Hypothesis_Status hypStatus;
+ CheckHypothesis(aMesh, aShape, hypStatus);
+ aMesh.Unlock();
+
+ //netgen::multithread.terminate = 0;
+ //netgen::multithread.task = "Volume meshing";
_progressByTic = -1.;
SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
- SMESH_MesherHelper helper(aMesh);
- bool _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
- helper.SetElementsOnShape( true );
+ SMESH_MesherHelper *helper = new SMESH_MesherHelper(aMesh);
+ _quadraticMesh = helper->IsQuadraticSubMesh(aShape);
+ helper->SetElementsOnShape( true );
int Netgen_NbOfNodes = 0;
double Netgen_point[3];
int Netgen_triangle[3];
- NETGENPlugin_NetgenLibWrapper ngLib;
- Ng_Mesh * Netgen_mesh = ngLib._ngMesh;
+ NETGENPlugin_NetgenLibWrapper *ngLib;
+ int id_nglib = nglib_provider.take(&ngLib);
+ Ng_Mesh * Netgen_mesh = (Ng_Mesh*)ngLib->_ngMesh;
// vector of nodes in which node index == netgen ID
vector< const SMDS_MeshNode* > nodeVec;
+ aMesh.Lock();
{
const int invalid_ID = -1;
SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
if ( _viscousLayersHyp )
{
- netgen::multithread.percent = 3;
+ //netgen::multithread.percent = 3;
proxyMesh = _viscousLayersHyp->Compute( aMesh, aShape );
if ( !proxyMesh )
return false;
}
if ( aMesh.NbQuadrangles() > 0 )
{
- netgen::multithread.percent = 6;
+ //netgen::multithread.percent = 6;
StdMeshers_QuadToTriaAdaptor* Adaptor = new StdMeshers_QuadToTriaAdaptor;
Adaptor->Compute(aMesh,aShape,proxyMesh.get());
proxyMesh.reset( Adaptor );
bool isInternalFace = internals.isInternalShape( faceID );
bool isRev = false;
if ( checkReverse && !isInternalFace &&
- helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
+ 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 ));
+ 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() ));
+
+ iteratorElem = aSubMeshDSFace->GetElements();
+ }
while ( iteratorElem->more() ) // loop on elements on a geom face
{
// check mesh face
const SMDS_MeshNode* node = elem->GetNode( iN );
const int shapeID = node->getshapeId();
if ( node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_EDGE &&
- helper.IsDegenShape( shapeID ))
+ 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();
nodeVec[ n_id->second ] = n_id->first;
nodeToNetgenID.clear();
+ // TODO: Handle internal vertex
if ( internals.hasInternalVertexInSolid() )
{
netgen::OCCGeometry occgeo;
internals);
}
}
+ aMesh.Unlock();
// -------------------------
// Generate the volume mesh
// -------------------------
+ ngLib->_isComputeOk = compute( aMesh, *helper, nodeVec, *ngLib );
+ bool ret = ngLib->_isComputeOk;
+ nglib_provider.release(id_nglib, true);
- return ( ngLib._isComputeOk = compute( aMesh, helper, nodeVec, Netgen_mesh));
+ return ret;
}
+// 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 );
+// }
+// }
+// }
+// }
+// }
+
//================================================================================
/*!
* \brief set parameters and generate the volume mesh
bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
SMESH_MesherHelper& helper,
vector< const SMDS_MeshNode* >& nodeVec,
- Ng_Mesh * Netgen_mesh)
+ NETGENPlugin_NetgenLibWrapper& ngLib)
{
- netgen::multithread.terminate = 0;
+ //netgen::multithread.terminate = 0;
- netgen::Mesh* ngMesh = (netgen::Mesh*)Netgen_mesh;
- int Netgen_NbOfNodes = Ng_GetNP(Netgen_mesh);
+ netgen::Mesh* ngMesh = ngLib._ngMesh;
+ Ng_Mesh* Netgen_mesh = ngLib.ngMesh();
+ int Netgen_NbOfNodes = Ng_GetNP( Netgen_mesh );
-#ifndef NETGEN_V5
- char *optstr = 0;
-#endif
int startWith = netgen::MESHCONST_MESHVOLUME;
int endWith = netgen::MESHCONST_OPTVOLUME;
int err = 1;
NETGENPlugin_Mesher aMesher( &aMesh, helper.GetSubShape(), /*isVolume=*/true );
- netgen::OCCGeometry occgeo;
-
+ netgen::OCCGeometry *occgeo;
+ int id_occgeo = occgeom_provider.take(&occgeo);
+ netgen::MeshingParameters mparam;
+ int id_mparam = mparam_provider.take(mparam);
+ aMesher.SetDefaultParameters(mparam);
+
if ( _hypParameters )
{
- aMesher.SetParameters( _hypParameters );
+ aMesher.SetParameters( _hypParameters, mparam );
+
+ if ( !_hypParameters->GetLocalSizesAndEntries().empty() ||
+ !_hypParameters->GetMeshSizeFile().empty() )
+ {
+ if ( ! &ngMesh->LocalHFunction() )
+ {
+ netgen::Point3d pmin, pmax;
+ ngMesh->GetBox( pmin, pmax, 0 );
+ ngMesh->SetLocalH( pmin, pmax, _hypParameters->GetGrowthRate() );
+ }
+ aMesher.SetLocalSize( *occgeo, *ngMesh );
+
+ try {
+ ngMesh->LoadLocalMeshSize( mparam.meshsizefilename );
+ } catch (netgen::NgException & ex) {
+ return error( COMPERR_BAD_PARMETERS, ex.What() );
+ }
+ }
if ( !_hypParameters->GetOptimize() )
endWith = netgen::MESHCONST_MESHVOLUME;
}
else if ( _hypMaxElementVolume )
{
- netgen::mparam.maxh = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
+ mparam.maxh = pow( 72, 1/6. ) * pow( _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;
+ aMesher.PrepareOCCgeometry( *occgeo, helper.GetSubShape(), aMesh );
+ mparam.maxh = occgeo->GetBoundingBox().Diam()/2;
}
else
{
netgen::Point3d pmin, pmax;
ngMesh->GetBox (pmin, pmax);
- netgen::mparam.maxh = Dist(pmin, pmax)/2;
+ mparam.maxh = Dist(pmin, pmax)/2;
}
if ( !_hypParameters && aMesh.HasShapeToMesh() )
{
- netgen::mparam.minh = aMesher.GetDefaultMinSize( helper.GetSubShape(), netgen::mparam.maxh );
+ mparam.minh = aMesher.GetDefaultMinSize( helper.GetSubShape(), mparam.maxh );
}
try
{
-#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
OCC_CATCH_SIGNALS;
-#endif
-#ifdef NETGEN_V5
- ngMesh->CalcLocalH(netgen::mparam.grading);
- err = netgen::OCCGenerateMesh(occgeo, ngMesh, netgen::mparam, startWith, endWith);
-#else
- ngMesh->CalcLocalH();
- err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
-#endif
+
+ ngLib.CalcLocalH(ngMesh);
+ err = ngLib.GenerateMesh(*occgeo, startWith, endWith, ngMesh, mparam);
+
if(netgen::multithread.terminate)
return false;
if ( err )
str << ": " << ex.GetMessageString();
error(str);
}
- catch (netgen::NgException exc)
+ catch (netgen::NgException& exc)
{
SMESH_Comment str("NgException");
if ( strlen( netgen::multithread.task ) > 0 )
int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
- MESSAGE("End of Volume Mesh Generation. err=" << err <<
- ", nb new nodes: " << Netgen_NbOfNodesNew - Netgen_NbOfNodes <<
- ", nb tetra: " << Netgen_NbOfTetra);
-
// -------------------------------------------------------------------
// Feed back the SMESHDS with the generated Nodes and Volume Elements
// -------------------------------------------------------------------
if ( err )
{
SMESH_ComputeErrorPtr ce = NETGENPlugin_Mesher::ReadErrors(nodeVec);
- if ( ce && !ce->myBadElements.empty() )
+ if ( ce && ce->HasBadElems() )
error( ce );
}
+ mparam_provider.release(id_mparam);
+ occgeom_provider.release(id_occgeo, true);
+
+ aMesh.Lock();
bool isOK = ( /*status == NG_OK &&*/ Netgen_NbOfTetra > 0 );// get whatever built
if ( isOK )
{
}
}
}
+ aMesh.Unlock();
+
return !err;
}
// ---------------------------------
int Netgen_NbOfNodes = 0;
- int Netgen_param2ndOrder = 0;
- double Netgen_paramFine = 1.;
- double Netgen_paramSize = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
-
double Netgen_point[3];
int Netgen_triangle[3];
- int Netgen_tetrahedron[4];
NETGENPlugin_NetgenLibWrapper ngLib;
- Ng_Mesh * Netgen_mesh = ngLib._ngMesh;
+ Ng_Mesh * Netgen_mesh = ngLib.ngMesh();
SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
if ( aMesh.NbQuadrangles() > 0 )
StdMeshers_QuadToTriaAdaptor* Adaptor = new StdMeshers_QuadToTriaAdaptor;
Adaptor->Compute(aMesh);
proxyMesh.reset( Adaptor );
+
+ if ( aHelper->IsQuadraticMesh() )
+ {
+ SMDS_ElemIteratorPtr fIt = proxyMesh->GetFaces();
+ while( fIt->more())
+ aHelper->AddTLinks( static_cast< const SMDS_MeshFace* >( fIt->next() ));
+ }
}
// maps nodes to ng ID
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 )
{
// Generate the volume mesh
// -------------------------
- return ( ngLib._isComputeOk = compute( aMesh, *aHelper, nodeVec, Netgen_mesh));
+ return ( ngLib._isComputeOk = compute( aMesh, *aHelper, nodeVec, ngLib ));
}
void NETGENPlugin_NETGEN_3D::CancelCompute()
const TopoDS_Shape& aShape,
MapShapeNbElems& aResMap)
{
- int nbtri = 0, nbqua = 0;
+ smIdType nbtri = 0, nbqua = 0;
double fullArea = 0.0;
for (TopExp_Explorer expF(aShape, TopAbs_FACE); expF.More(); expF.Next()) {
TopoDS_Face F = TopoDS::Face( expF.Current() );
smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
return false;
}
- std::vector<int> aVec = (*anIt).second;
- nbtri += Max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
- nbqua += Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
+ std::vector<smIdType> aVec = (*anIt).second;
+ nbtri += std::max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
+ nbqua += std::max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
GProp_GProps G;
BRepGProp::SurfaceProperties(F,G);
double anArea = G.Mass();
}
// collect info from edges
- int nb0d_e = 0, nb1d_e = 0;
+ smIdType nb0d_e = 0, nb1d_e = 0;
bool IsQuadratic = false;
bool IsFirst = true;
TopTools_MapOfShape tmpMap;
"Submesh can not be evaluated",this));
return false;
}
- std::vector<int> aVec = (*anIt).second;
+ std::vector<smIdType> aVec = (*anIt).second;
nb0d_e += aVec[SMDSEntity_Node];
- nb1d_e += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
+ nb1d_e += std::max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
if(IsFirst) {
IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
IsFirst = false;
}
tmpMap.Clear();
- double ELen_face = sqrt(2.* ( fullArea/(nbtri+nbqua*2) ) / sqrt(3.0) );
+ double ELen_face = sqrt(2.* ( fullArea/double(nbtri+nbqua*2) ) / sqrt(3.0) );
double ELen_vol = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
double ELen = Min(ELen_vol,ELen_face*2);
double aVolume = G.Mass();
double tetrVol = 0.1179*ELen*ELen*ELen;
double CoeffQuality = 0.9;
- int nbVols = int( aVolume/tetrVol/CoeffQuality );
- int nb1d_f = (nbtri*3 + nbqua*4 - nb1d_e) / 2;
- int nb1d_in = (nbVols*6 - nb1d_e - nb1d_f ) / 5;
- std::vector<int> aVec(SMDSEntity_Last);
- for(int i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i]=0;
+ smIdType nbVols = (smIdType)( aVolume/tetrVol/CoeffQuality );
+ smIdType nb1d_f = (nbtri*3 + nbqua*4 - nb1d_e) / 2;
+ smIdType nb1d_in = (nbVols*6 - nb1d_e - nb1d_f ) / 5;
+ std::vector<smIdType> aVec(SMDSEntity_Last);
+ for(smIdType i=SMDSEntity_Node; i<SMDSEntity_Last; i++) aVec[i]=0;
if( IsQuadratic ) {
aVec[SMDSEntity_Node] = nb1d_in/6 + 1 + nb1d_in;
aVec[SMDSEntity_Quad_Tetra] = nbVols - nbqua*2;
}
SMESH_subMesh *sm = aMesh.GetSubMesh(aShape);
aResMap.insert(std::make_pair(sm,aVec));
-
+
return true;
}
