-// Copyright (C) 2007-2016 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_Hypothesis.hxx"
+// TODO: remove use of netgen_param
+#include "NETGENPlugin_DriverParam.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>
+
/*
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
+
+ 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;
_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;
}
+
+
//=============================================================================
/*!
*Here we are going to use the NETGEN mesher
*/
//=============================================================================
-bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
- const TopoDS_Shape& aShape)
+/**
+ * @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
+)
+{
+ 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 = 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 ( 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()){
+ const SMDS_MeshElement* elem = iteratorElem->next();
+ // 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);
+ }
+ }
+
+ return false;
+}
+
+
+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)
{
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 = ngLib._ngMesh;
+ 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();
- while ( iteratorElem->more() ) // loop on elements on a geom face
+ isRev = get<0>(info);
+ isInternalFace = get<1>(info);
+ // 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 )
{
- // 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);
}
}
-
- // -------------------------
- // Generate the volume mesh
- // -------------------------
-
- return ( ngLib._isComputeOk = compute( aMesh, helper, nodeVec, Netgen_mesh));
+ Netgen_NbOfNodes = Ng_GetNP( Netgen_mesh );
+ return false;
}
-namespace
+bool NETGENPlugin_NETGEN_3D::computePrepareParam(
+ SMESH_Mesh& aMesh,
+ NETGENPlugin_NetgenLibWrapper &ngLib,
+ netgen::OCCGeometry &occgeo,
+ SMESH_MesherHelper &helper,
+ netgen_params &aParams,
+ int &endWith)
+
{
- void limitVolumeSize( netgen::Mesh* ngMesh,
- double maxh )
+ netgen::multithread.terminate = 0;
+
+ netgen::Mesh* ngMesh = ngLib._ngMesh;
+
+ NETGENPlugin_Mesher aMesher( &aMesh, helper.GetSubShape(), /*isVolume=*/true );
+
+
+ if ( aParams._hypParameters )
{
- // get average h of faces
- double faceh = 0;
- int nbh = 0;
- for (int i = 1; i <= ngMesh->GetNSE(); i++)
+ aMesher.SetParameters( aParams._hypParameters );
+
+ if ( !aParams._hypParameters->GetLocalSizesAndEntries().empty() ||
+ !aParams._hypParameters->GetMeshSizeFile().empty() )
{
- const netgen::Element2d& face = ngMesh->SurfaceElement(i);
- for (int j=1; j <= face.GetNP(); ++j)
+ if ( ! &ngMesh->LocalHFunction() )
{
- 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++;
- }
+ 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;
}
}
- 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
+ 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, 0 );
- const double dx = pmax.X() - pmin.X();
- const double dy = pmax.Y() - pmin.Y();
- const double dz = pmax.Z() - pmin.Z();
+ ngMesh->GetBox (pmin, pmax);
+ netgen::mparam.maxh = Dist(pmin, pmax)/2;
+ }
- if ( ! & ngMesh->LocalHFunction() )
- ngMesh->SetLocalH( pmin, pmax, compareh <= 0 ? 0.1 : 0.5 );
+ 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;
- // 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 ));
+ try
+ {
+ OCC_CATCH_SIGNALS;
- netgen::Point3d p;
- for ( int i = 0; i <= nbX; ++i )
+ 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 )
{
- p.X() = pmin.X() + i * dx / nbX;
- for ( int j = 0; j <= nbY; ++j )
+ 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 (...)
{
- 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 );
- }
}
}
}
+ return false;
+}
+
+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;
+
}
//================================================================================
bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
SMESH_MesherHelper& helper,
vector< const SMDS_MeshNode* >& nodeVec,
- Ng_Mesh * Netgen_mesh)
+ NETGENPlugin_NetgenLibWrapper& ngLib)
{
+ auto time0 = std::chrono::high_resolution_clock::now();
+
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
+ // limitVolumeSize( ngMesh, mparam.maxh ); // result is unpredictable
}
else if ( aMesh.HasShapeToMesh() )
{
try
{
OCC_CATCH_SIGNALS;
+ auto time0 = std::chrono::high_resolution_clock::now();
+
+ ngLib.CalcLocalH(ngMesh);
+ err = ngLib.GenerateMesh(occgeo, startWith, endWith);
-#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
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 )
str << " at " << netgen::multithread.task;
error(str);
}
+ auto time1 = std::chrono::high_resolution_clock::now();
+ auto elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time1-time0);
+ std::cout << "Time for seq:compute: " << elapsed.count() * 1e-9 << std::endl;
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 );
}
}
}
}
+ auto time2 = std::chrono::high_resolution_clock::now();
+ elapsed = std::chrono::duration_cast<std::chrono::nanoseconds>(time2-time1);
+ std::cout << "Time for seq:compute: " << elapsed.count() * 1e-9 << std::endl;
+
return !err;
}
int Netgen_triangle[3];
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;
}
