-// Copyright (C) 2007-2012 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2023 CEA, EDF, 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
#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 {
- extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, int, int, char*);
+
+ 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";
+ _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();
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 Compute the list of already meshed Surface elements and info
+ * on their orientation and if they are internal
+ *
+ * @param aMesh Global Mesh
+ * @param aShape Shape associated to the mesh
+ * @param proxyMesh pointer to mesh used fo find the elements
+ * @param internals information on internal sub shapes
+ * @param helper helper associated to the mesh
+ * @param listElements map of surface element associated with
+ * their orientation and internal status
+ * @return true if their was some error
+ */
+bool NETGENPlugin_NETGEN_3D::getSurfaceElements(
+ SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape,
+ SMESH_ProxyMesh::Ptr proxyMesh,
+ NETGENPlugin_Internals &internals,
+ SMESH_MesherHelper &helper,
+ std::map<const SMDS_MeshElement*, tuple<bool, bool>, TIDCompare>& 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 ( _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 ){
+ return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
+ }
+ if ( elem->NbCornerNodes() != 3 ){
+ return error( COMPERR_BAD_INPUT_MESH, "Not triangle element encounters");
+ }
+ listElements[elem] = tuple<bool, bool>(isRev, isInternalFace);
+ }
+ }
+
+ return false;
+}
+
+/**
+ * @brief Part of Compute: adding already meshed elements
+ * into netgen structure
+ *
+ * @param aMesh Global mesh
+ * @param aShape Shape associated with the mesh
+ * @param nodeVec Mapping between nodes mesh id and netgen structure id
+ * @param ngLib Wrapper on netgen lib
+ * @param helper helper assocaited to the mesh
+ * @param Netgen_NbOfNodes Number of nodes in netge structure
+ * @return true if there was some error
+ */
+
+bool NETGENPlugin_NETGEN_3D::computeFillNgMesh(
+ SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape,
+ vector< const SMDS_MeshNode* > &nodeVec,
+ NETGENPlugin_NetgenLibWrapper &ngLib,
+ SMESH_MesherHelper &helper,
+ int &Netgen_NbOfNodes)
{
-#ifdef WITH_SMESH_CANCEL_COMPUTE
netgen::multithread.terminate = 0;
-#endif
- MESSAGE("NETGENPlugin_NETGEN_3D::Compute with maxElmentsize = " << _maxElementVolume);
+ 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;
-
+ 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;
SMESH::Controls::TSequenceOfXYZ nodesCoords;
// maps nodes to ng ID
+ // map must be sorted by ID to ensure that we will have the same number of
+ // 3D element if we recompute
typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
typedef TNodeToIDMap::value_type TN2ID;
TNodeToIDMap nodeToNetgenID;
// ---------------------------------
// 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 )
{
+ 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 );
}
- for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
+ // map must be sorted by ID to ensure that we will have the same number of
+ // 3D element if we recompute
+ std::map<const SMDS_MeshElement*, tuple<bool, bool>, TIDCompare> listElements;
+ bool ret = getSurfaceElements(aMesh, aShape, proxyMesh, internals, helper, 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 = SMESH_Algo::IsReversedSubMesh( TopoDS::Face(aShapeFace), meshDS );
-
- 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);
}
}
+ Netgen_NbOfNodes = Ng_GetNP( Netgen_mesh );
+ return false;
+}
- // -------------------------
- // Generate the volume mesh
- // -------------------------
+/**
+ * @brief Part of Compute: Setting the netgen parameters from the Hypothesis
+ *
+ * @param aMesh Global mesh
+ * @param ngLib Wrapper on netgen lib
+ * @param occgeo Mapping between nodes mesh id and netgen structure id
+ * @param helper helper assocaited to the mesh
+ * @param endWith end step of netgen
+ * @return true if there was some error
+ */
+bool NETGENPlugin_NETGEN_3D::computePrepareParam(
+ SMESH_Mesh& aMesh,
+ NETGENPlugin_NetgenLibWrapper &ngLib,
+ netgen::OCCGeometry &occgeo,
+ SMESH_MesherHelper &helper,
+ int &endWith)
+
+{
+ netgen::multithread.terminate = 0;
+
+ netgen::Mesh* ngMesh = ngLib._ngMesh;
+
+ NETGENPlugin_Mesher aMesher( &aMesh, helper.GetSubShape(), /*isVolume=*/true );
+
+
+ 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, 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 ( !_hypParameters && aMesh.HasShapeToMesh() )
+ {
+ netgen::mparam.minh = aMesher.GetDefaultMinSize( helper.GetSubShape(), netgen::mparam.maxh );
+ }
+ return false;
+}
+
+/**
+ * @brief Part of Compute: call to the netgen mesher
+ *
+ * @param occgeo netgen geometry structure
+ * @param nodeVec Mapping between nodes mesh id and netgen structure id
+ * @param ngMesh netgen mesh structure
+ * @param ngLib Wrapper on netgen lib
+ * @param startWith starting step of netgen
+ * @param endWith end step of netgen
+ * @return true if there was some error
+ */
+bool NETGENPlugin_NETGEN_3D::computeRunMesher(
+ netgen::OCCGeometry &occgeo,
+ vector< const SMDS_MeshNode* > &nodeVec,
+ netgen::Mesh* ngMesh,
+ NETGENPlugin_NetgenLibWrapper &ngLib,
+ 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 ){
+ error(SMESH_Comment("Error in netgen::OCCGenerateMesh() at ") << netgen::multithread.task);
+ }
+ }
+ 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();
+ error(str);
+ }
+ catch (netgen::NgException& exc)
+ {
+ SMESH_Comment str("NgException");
+ if ( strlen( netgen::multithread.task ) > 0 )
+ str << " at " << netgen::multithread.task;
+ str << ": " << exc.What();
+ error(str);
+ }
+ catch (...)
+ {
+ SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
+ if ( strlen( netgen::multithread.task ) > 0 )
+ str << " at " << netgen::multithread.task;
+ error(str);
+ }
+
+ if ( err )
+ {
+ SMESH_ComputeErrorPtr ce = NETGENPlugin_Mesher::ReadErrors(nodeVec);
+ if ( ce && ce->HasBadElems() ){
+ error( ce );
+ }
+ }
+
+ return false;
+}
+
+/**
+ * @brief Part of Compute: Adding new element created by mesher to SMESH_Mesh
+ *
+ * @param nodeVec Mapping between nodes mesh id and netgen structure id
+ * @param ngLib Wrapper on netgen lib
+ * @param helper tool associated to the mesh to add element
+ * @param Netgen_NbOfNodes Number of nodes in netgen structure
+ * @return true if there was some error
+ */
+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;
+}
+
+
+/**
+ * @brief Compute mesh associate to shape
+ *
+ * @param aMesh The mesh
+ * @param aShape The shape
+ * @return true fi there are some error
+ */
+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;
+
+ computeFillNgMesh(aMesh, aShape, nodeVec, ngLib, helper, Netgen_NbOfNodes);
+
+ netgen::OCCGeometry occgeo;
+ computePrepareParam(aMesh, ngLib, occgeo, helper, endWith);
+ computeRunMesher(occgeo, nodeVec, ngLib._ngMesh, ngLib, startWith, endWith);
+
+ computeFillMesh(nodeVec, ngLib, helper, Netgen_NbOfNodes);
+
+ return false;
- return compute( aMesh, helper, nodeVec, Netgen_mesh);
}
//================================================================================
bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
SMESH_MesherHelper& helper,
vector< const SMDS_MeshNode* >& nodeVec,
- Ng_Mesh * Netgen_mesh)
+ NETGENPlugin_NetgenLibWrapper& ngLib)
{
-#ifdef WITH_SMESH_CANCEL_COMPUTE
netgen::multithread.terminate = 0;
-#endif
- netgen::Mesh* ngMesh = (netgen::Mesh*)Netgen_mesh;
- int Netgen_NbOfNodes = Ng_GetNP(Netgen_mesh);
- char *optstr = 0;
+ netgen::Mesh* ngMesh = ngLib._ngMesh;
+ Ng_Mesh* Netgen_mesh = ngLib.ngMesh();
+ int Netgen_NbOfNodes = Ng_GetNP( Netgen_mesh );
+
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, 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
- ngMesh->CalcLocalH();
- err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
-#ifdef WITH_SMESH_CANCEL_COMPUTE
+
+ ngLib.CalcLocalH(ngMesh);
+ err = ngLib.GenerateMesh(occgeo, startWith, endWith);
+
if(netgen::multithread.terminate)
return false;
-#endif
if ( err )
error(SMESH_Comment("Error in netgen::OCCGenerateMesh() at ") << netgen::multithread.task);
}
str << ": " << ex.GetMessageString();
error(str);
}
+ catch (netgen::NgException& exc)
+ {
+ SMESH_Comment str("NgException");
+ if ( strlen( netgen::multithread.task ) > 0 )
+ str << " at " << netgen::multithread.task;
+ str << ": " << exc.What();
+ error(str);
+ }
catch (...)
{
SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
- str << " at " << netgen::multithread.task;
+ if ( strlen( netgen::multithread.task ) > 0 )
+ str << " at " << netgen::multithread.task;
error(str);
}
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 );
}
bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
SMESH_MesherHelper* aHelper)
{
- MESSAGE("NETGENPlugin_NETGEN_3D::Compute with maxElmentsize = " << _maxElementVolume);
const int invalid_ID = -1;
- bool _quadraticMesh = false;
- SMESH_MesherHelper::MType MeshType = aHelper->IsQuadraticMesh();
+ netgen::multithread.terminate = 0;
+ _progressByTic = -1.;
- if(MeshType == SMESH_MesherHelper::COMP)
+ SMESH_MesherHelper::MType MeshType = aHelper->IsQuadraticMesh();
+ if ( MeshType == SMESH_MesherHelper::COMP )
return error( COMPERR_BAD_INPUT_MESH,
- SMESH_Comment("Mesh with linear and quadratic elements given."));
- else if (MeshType == SMESH_MesherHelper::QUADRATIC)
- _quadraticMesh = true;
+ SMESH_Comment("Mesh with linear and quadratic elements given"));
+
+ aHelper->SetIsQuadratic( MeshType == SMESH_MesherHelper::QUADRATIC );
// ---------------------------------
// Feed the Netgen with surface mesh
// ---------------------------------
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 compute( aMesh, *aHelper, nodeVec, Netgen_mesh);
+ return ( ngLib._isComputeOk = compute( aMesh, *aHelper, nodeVec, ngLib ));
}
-#ifdef WITH_SMESH_CANCEL_COMPUTE
void NETGENPlugin_NETGEN_3D::CancelCompute()
{
SMESH_Algo::CancelCompute();
netgen::multithread.terminate = 1;
}
-#endif
+
+//================================================================================
+/*!
+ * \brief Return Compute progress
+ */
+//================================================================================
+
+double NETGENPlugin_NETGEN_3D::GetProgress() const
+{
+ double res;
+ const char* volMeshing = "Volume meshing";
+ const char* dlnMeshing = "Delaunay meshing";
+ 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 = 0.001 + meshingRatio * netgen::multithread.percent / 100.;
+ }
+ else // different otimizations
+ {
+ if ( _progressByTic < 0. )
+ ((NETGENPlugin_NETGEN_3D*)this)->_progressByTic = meshingRatio / _progressTic;
+ res = _progressByTic * _progressTic;
+ }
+ 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;
}
SMESH_subMesh *sm = aMesh.GetSubMesh(aShape);
aResMap.insert(std::make_pair(sm,aVec));
-
+
return true;
}