-// Copyright (C) 2007-2013 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
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
-// version 2.1 of the License.
+// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
#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
+
+ NETGENPLUGIN_DLL_HEADER
extern MeshingParameters mparam;
+
+ 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;
// for correct work of GetProgress():
netgen::multithread.percent = 0.;
netgen::multithread.task = "Volume meshing";
- _optimizationStarted = false;
+ _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 )
+ 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 )
aStatus = HYP_INCOMPATIBLE;
+ else if ( aStatus == HYP_OK && _viscousLayersHyp )
+ error( _viscousLayersHyp->CheckHypothesis( aMesh, aShape, aStatus ));
if ( _hypMaxElementVolume )
_maxElementVolume = _hypMaxElementVolume->GetMaxVolume();
const TopoDS_Shape& aShape)
{
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);
+ _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
helper.SetElementsOnShape( true );
int Netgen_NbOfNodes = 0;
int Netgen_triangle[3];
NETGENPlugin_NetgenLibWrapper ngLib;
- Ng_Mesh * Netgen_mesh = ngLib._ngMesh;
+ Ng_Mesh * Netgen_mesh = (Ng_Mesh*)ngLib._ngMesh;
// vector of nodes in which node index == netgen ID
vector< const SMDS_MeshNode* > nodeVec;
SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
if ( _viscousLayersHyp )
{
+ netgen::multithread.percent = 3;
proxyMesh = _viscousLayersHyp->Compute( aMesh, aShape );
if ( !proxyMesh )
return false;
}
if ( aMesh.NbQuadrangles() > 0 )
{
+ netgen::multithread.percent = 6;
StdMeshers_QuadToTriaAdaptor* Adaptor = new StdMeshers_QuadToTriaAdaptor;
Adaptor->Compute(aMesh,aShape,proxyMesh.get());
proxyMesh.reset( Adaptor );
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
// Generate the volume mesh
// -------------------------
- return ( ngLib._isComputeOk = compute( aMesh, helper, nodeVec, Netgen_mesh));
+ return ( ngLib._isComputeOk = compute( aMesh, helper, nodeVec, ngLib ));
}
+// 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::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;
-
+
if ( _hypParameters )
{
aMesher.SetParameters( _hypParameters );
+
+ 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( netgen::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. );
+ // limitVolumeSize( ngMesh, netgen::mparam.maxh ); // result is unpredictable
}
else if ( aMesh.HasShapeToMesh() )
{
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);
+
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 );
}
const int invalid_ID = -1;
netgen::multithread.terminate = 0;
+ _progressByTic = -1.;
SMESH_MesherHelper::MType MeshType = aHelper->IsQuadraticMesh();
if ( MeshType == SMESH_MesherHelper::COMP )
// ---------------------------------
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
// 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()
double res;
const char* volMeshing = "Volume meshing";
const char* dlnMeshing = "Delaunay meshing";
- if ( !_optimizationStarted &&
+ const double meshingRatio = 0.15;
+ const_cast<NETGENPlugin_NETGEN_3D*>( this )->_progressTic++;
+
+ if ( _progressByTic < 0. &&
( strncmp( netgen::multithread.task, dlnMeshing, 3 ) == 0 ||
strncmp( netgen::multithread.task, volMeshing, 3 ) == 0 ))
{
- res = 0.5 * netgen::multithread.percent / 100.; // [0., 0.5]
+ res = 0.001 + meshingRatio * netgen::multithread.percent / 100.;
+ //cout << netgen::multithread.task << " " <<_progressTic << "-" << netgen::multithread.percent << endl;
}
else // different otimizations
{
- ((NETGENPlugin_NETGEN_3D*)this)->_optimizationStarted = true;
- res = 0.5 + 0.5 * SMESH_Algo::GetProgressByTic(); // [0.5, 1.]
+ if ( _progressByTic < 0. )
+ ((NETGENPlugin_NETGEN_3D*)this)->_progressByTic = meshingRatio / _progressTic;
+ res = _progressByTic * _progressTic;
+ //cout << netgen::multithread.task << " " << _progressTic << " " << res << endl;
}
- return res;
+ return Min ( res, 0.98 );
}
//=============================================================================
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;
