+// 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, 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
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+// Lesser General Public License for more details.
+//
+// You should have received a copy of the GNU Lesser General Public
+// License along with this library; if not, write to the Free Software
+// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+//
+// See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
+//
+
//=============================================================================
// File : NETGENPlugin_NETGEN_3D.cxx
// Moved here from SMESH_NETGEN_3D.cxx
// Created : lundi 27 Janvier 2003
// Author : Nadir BOUHAMOU (CEA)
// Project : SALOME
-// Copyright : CEA 2003
-// $Header$
//=============================================================================
-using namespace std;
-
+//
#include "NETGENPlugin_NETGEN_3D.hxx"
-#include "SMESH_Gen.hxx"
-#include "SMESH_Mesh.hxx"
-#include "SMESH_subMesh.hxx"
-
-#include "SMDS_MeshElement.hxx"
-#include "SMDS_MeshNode.hxx"
-#include "SMDS_FacePosition.hxx"
+#include "NETGENPlugin_Hypothesis.hxx"
+
+#include <SMDS_MeshElement.hxx>
+#include <SMDS_MeshNode.hxx>
+#include <SMESHDS_Mesh.hxx>
+#include <SMESH_Comment.hxx>
+#include <SMESH_ControlsDef.hxx>
+#include <SMESH_Gen.hxx>
+#include <SMESH_Mesh.hxx>
+#include <SMESH_MeshEditor.hxx>
+#include <SMESH_MesherHelper.hxx>
+#include <SMESH_subMesh.hxx>
+#include <StdMeshers_MaxElementVolume.hxx>
+#include <StdMeshers_QuadToTriaAdaptor.hxx>
+#include <StdMeshers_ViscousLayers.hxx>
+
+#include <BRepGProp.hxx>
+#include <BRep_Tool.hxx>
+#include <GProp_GProps.hxx>
#include <TopExp.hxx>
-#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
-#include <TopTools_ListOfShape.hxx>
+#include <TopExp_Explorer.hxx>
#include <TopTools_ListIteratorOfListOfShape.hxx>
-#include <TColStd_ListIteratorOfListOfInteger.hxx>
+#include <TopoDS.hxx>
-#include <BRep_Tool.hxx>
-#include <Geom_Surface.hxx>
-#include <Geom_Curve.hxx>
-#include <Geom2d_Curve.hxx>
+#include <Standard_Failure.hxx>
+#include <Standard_ErrorHandler.hxx>
+
+#include <utilities.h>
-#include "utilities.h"
+#include <list>
+#include <vector>
+#include <map>
/*
Netgen include files
*/
-#include "nglib.h"
+#ifndef OCCGEOMETRY
+#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 {
+
+ NETGENPLUGIN_DLL_HEADER
+ extern MeshingParameters mparam;
+
+ NETGENPLUGIN_DLL_HEADER
+ extern volatile multithreadt multithread;
+}
+using namespace nglib;
+using namespace std;
//=============================================================================
/*!
*/
//=============================================================================
-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 = TopAbs_SOLID;
_shapeType = (1 << TopAbs_SHELL) | (1 << TopAbs_SOLID);// 1 bit /shape type
-// MESSAGE("_shapeType octal " << oct << _shapeType);
_compatibleHypothesis.push_back("MaxElementVolume");
+ _compatibleHypothesis.push_back("NETGEN_Parameters");
+ _compatibleHypothesis.push_back("ViscousLayers");
_maxElementVolume = 0.;
_hypMaxElementVolume = NULL;
+ _hypParameters = NULL;
+ _viscousLayersHyp = NULL;
+
+ _requireShape = false; // can work without shape
}
//=============================================================================
NETGENPlugin_NETGEN_3D::~NETGENPlugin_NETGEN_3D()
{
- MESSAGE("NETGENPlugin_NETGEN_3D::~NETGENPlugin_NETGEN_3D");
}
//=============================================================================
*/
//=============================================================================
-bool NETGENPlugin_NETGEN_3D::CheckHypothesis
- (SMESH_Mesh& aMesh,
- const TopoDS_Shape& aShape,
- SMESH_Hypothesis::Hypothesis_Status& aStatus)
+bool NETGENPlugin_NETGEN_3D::CheckHypothesis (SMESH_Mesh& aMesh,
+ 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);
- int nbHyp = hyps.size();
- if (!nbHyp)
+ const list<const SMESHDS_Hypothesis*>& hyps =
+ GetUsedHypothesis(aMesh, aShape, /*ignoreAuxiliary=*/false);
+ list <const SMESHDS_Hypothesis* >::const_iterator h = hyps.begin();
+ if ( h == hyps.end())
{
- aStatus = SMESH_Hypothesis::HYP_MISSING;
- return false; // can't work with no hypothesis
+ aStatus = SMESH_Hypothesis::HYP_OK;
+ return true; // can work with no hypothesis
}
- itl = hyps.begin();
- theHyp = (*itl); // use only the first hypothesis
-
- string hypName = theHyp->GetName();
-// int hypId = theHyp->GetID();
-// SCRUTE(hypName);
-
- bool isOk = false;
-
- if (hypName == "MaxElementVolume")
+ aStatus = HYP_OK;
+ for ( ; h != hyps.end(); ++h )
{
- _hypMaxElementVolume = static_cast<const StdMeshers_MaxElementVolume*> (theHyp);
- ASSERT(_hypMaxElementVolume);
- _maxElementVolume = _hypMaxElementVolume->GetMaxVolume();
- isOk =true;
- aStatus = SMESH_Hypothesis::HYP_OK;
+ if ( !_hypMaxElementVolume )
+ _hypMaxElementVolume = dynamic_cast< const StdMeshers_MaxElementVolume*> ( *h );
+ 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 &&
+ !dynamic_cast< const StdMeshers_ViscousLayers*>(*h)) // several VL hyps allowed
+ aStatus = HYP_INCOMPATIBLE;
}
- else
- aStatus = SMESH_Hypothesis::HYP_INCOMPATIBLE;
+ if ( _hypMaxElementVolume && _hypParameters )
+ aStatus = HYP_INCOMPATIBLE;
+ else if ( aStatus == HYP_OK && _viscousLayersHyp )
+ error( _viscousLayersHyp->CheckHypothesis( aMesh, aShape, aStatus ));
- return isOk;
+ if ( _hypMaxElementVolume )
+ _maxElementVolume = _hypMaxElementVolume->GetMaxVolume();
+
+ return aStatus == HYP_OK;
}
//=============================================================================
bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape)
{
- MESSAGE("NETGENPlugin_NETGEN_3D::Compute with maxElmentsize = " << _maxElementVolume);
+ netgen::multithread.terminate = 0;
+ netgen::multithread.task = "Volume meshing";
+ _progressByTic = -1.;
SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
- map<int, const SMDS_MeshNode*> netgenToDS;
-
- // check if all faces were meshed by a triangle mesher (here MESFISTO_2D)
+ SMESH_MesherHelper helper(aMesh);
+ _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
+ helper.SetElementsOnShape( true );
- vector<SMESH_subMesh*> meshFaces;
- vector<TopoDS_Shape> shapeFaces;
+ int Netgen_NbOfNodes = 0;
+ double Netgen_point[3];
+ int Netgen_triangle[3];
- for (TopExp_Explorer exp(aShape,TopAbs_FACE);exp.More();exp.Next())
- {
- TopoDS_Shape aShapeFace = exp.Current();
- SMESH_subMesh* aSubMesh = aMesh.GetSubMeshContaining(exp.Current());
- ASSERT (aSubMesh);
- int internal_size = meshFaces.size();
- int index = 0;
- for (int i = 0;i<internal_size;i++)
- {
- if (aSubMesh == meshFaces[i]) index = 1;
- }
- if (index == 0) meshFaces.push_back(aSubMesh);
-
- internal_size = shapeFaces.size();
- index = 0;
- for (int i = 0;i<internal_size;i++)
- {
- if (aShapeFace == shapeFaces[i]) index = 1;
- }
- if (index == 0) shapeFaces.push_back(aShapeFace);
- }
+ NETGENPlugin_NetgenLibWrapper ngLib;
+ Ng_Mesh * Netgen_mesh = (Ng_Mesh*)ngLib._ngMesh;
- int numberOfFaces = meshFaces.size();
+ // vector of nodes in which node index == netgen ID
+ vector< const SMDS_MeshNode* > nodeVec;
+ {
+ const int invalid_ID = -1;
- int NbTotOfTria = 0;
- int NbTotOfNodesFaces = 0;
+ SMESH::Controls::Area areaControl;
+ SMESH::Controls::TSequenceOfXYZ nodesCoords;
- for (int i=0; i<numberOfFaces; i++)
- {
- TopoDS_Shape aShapeFace = meshFaces[i]->GetSubShape();
- TopoDS_Shape aFace = shapeFaces[i];
- SMESH_Algo* algoFace = _gen->GetAlgo(aMesh, aShapeFace);
- string algoFaceName = algoFace->GetName();
- if (algoFaceName != "MEFISTO_2D")
- {
- INFOS(algoFaceName);
- return false;
- }
-
- const SMESHDS_SubMesh* aSubMeshDSFace = meshFaces[i]->GetSubMeshDS();
-
- int nbNodes = aSubMeshDSFace->NbNodes();
- NbTotOfNodesFaces += nbNodes;
- int nbTria = aSubMeshDSFace->NbElements();
- NbTotOfTria += nbTria;
- int index = 0;
-
- SMDS_ElemIteratorPtr iteratorTriangle = aSubMeshDSFace->GetElements();
-
- index = 0;
- int numberOfDegeneratedTriangle = 0;
- while(iteratorTriangle->more())
- {
- index++;
- const SMDS_MeshElement * triangle = iteratorTriangle->next();
-
- SMDS_ElemIteratorPtr triangleNodesIt = triangle->nodesIterator();
-
- const SMDS_MeshNode * node1 = static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
- double node1X = node1->X();
- double node1Y = node1->Y();
- double node1Z = node1->Z();
-
- const SMDS_MeshNode * node2 = static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
- double node2X = node2->X();
- double node2Y = node2->Y();
- double node2Z = node2->Z();
-
- const SMDS_MeshNode * node3 = static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
- double node3X = node3->X();
- double node3Y = node3->Y();
- double node3Z = node3->Z();
-
- // Compute the triangle surface
-
- double vect1 = ((node2Y - node1Y)*(node3Z - node1Z) - (node2Z - node1Z)*(node3Y - node1Y));
- double vect2 = - ((node2X - node1X)*(node3Z - node1Z) - (node2Z - node1Z)*(node3X - node1X));
- double vect3 = ((node2X - node1X)*(node3Y - node1Y) - (node2Y - node1Y)*(node3X - node1X));
- double epsilon = 1.0e-6;
-
- bool triangleIsDegenerated = ((abs(vect1)<epsilon) && (abs(vect2)<epsilon) && (abs(vect3)<epsilon));
-
- if (triangleIsDegenerated)
- {
- numberOfDegeneratedTriangle++;
- }
- }
-
- if (numberOfDegeneratedTriangle > 0)
- MESSAGE("WARNING THERE IS(ARE) " << numberOfDegeneratedTriangle << " degenerated triangle on this face");
+ // maps nodes to ng ID
+ typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
+ typedef TNodeToIDMap::value_type TN2ID;
+ TNodeToIDMap nodeToNetgenID;
- }
+ // find internal shapes
+ NETGENPlugin_Internals internals( aMesh, aShape, /*is3D=*/true );
- // check if all edges were meshed by a edge mesher (here Regular_1D)
+ // ---------------------------------
+ // Feed the Netgen with surface mesh
+ // ---------------------------------
- vector<SMESH_subMesh*> meshEdges;
- for (TopExp_Explorer exp(aShape,TopAbs_EDGE);exp.More();exp.Next())
- {
- SMESH_subMesh* aSubMesh = aMesh.GetSubMeshContaining(exp.Current());
- ASSERT (aSubMesh);
- int internal_size = meshEdges.size();
- int index = 0;
- for (int i = 0;i<internal_size;i++)
- {
- if (aSubMesh == meshEdges[i]) index = 1;
- }
- if (index == 0) meshEdges.push_back(aSubMesh);
- }
+ TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
+ bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
- int numberOfEdges = meshEdges.size();
-
- int NbTotOfNodesEdges = 0;
- int NbTotOfSegs = 0;
-
- for (int i=0; i<numberOfEdges; i++)
+ SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
+ if ( _viscousLayersHyp )
{
- TopoDS_Shape aShapeEdge = meshEdges[i]->GetSubShape();
- SMESH_Algo* algoEdge = _gen->GetAlgo(aMesh, aShapeEdge);
- string algoEdgeName = algoEdge->GetName();
- if (algoEdgeName != "Regular_1D")
- {
- INFOS(algoEdgeName);
- ASSERT(0);
- return false;
- }
-
- const SMESHDS_SubMesh* aSubMeshDSEdge = meshEdges[i]->GetSubMeshDS();
-
- int nbNodes = aSubMeshDSEdge->NbNodes();
- NbTotOfNodesEdges += nbNodes;
- int nbSegs = aSubMeshDSEdge->NbElements();
- NbTotOfSegs += nbSegs;
+ netgen::multithread.percent = 3;
+ proxyMesh = _viscousLayersHyp->Compute( aMesh, aShape );
+ if ( !proxyMesh )
+ return false;
}
-
- vector<SMESH_subMesh*> meshVertices;
- for (TopExp_Explorer exp(aShape,TopAbs_VERTEX);exp.More();exp.Next())
+ if ( aMesh.NbQuadrangles() > 0 )
{
- SMESH_subMesh* aSubMesh = aMesh.GetSubMeshContaining(exp.Current());
- ASSERT (aSubMesh);
- int internal_size = meshVertices.size();
- int index = 0;
- for (int i = 0;i<internal_size;i++)
- {
- if (aSubMesh == meshVertices[i]) index = 1;
- }
- if (index == 0) meshVertices.push_back(aSubMesh);
+ netgen::multithread.percent = 6;
+ StdMeshers_QuadToTriaAdaptor* Adaptor = new StdMeshers_QuadToTriaAdaptor;
+ Adaptor->Compute(aMesh,aShape,proxyMesh.get());
+ proxyMesh.reset( Adaptor );
}
- int numberOfVertices = meshVertices.size();
-
- int NbTotOfNodesVertices = 0;
-
- for (int i=0; i<numberOfVertices; i++)
+ for ( TopExp_Explorer exFa( aShape, TopAbs_FACE ); exFa.More(); exFa.Next())
{
- TopoDS_Shape aShapeVertex = meshVertices[i]->GetSubShape();
-
- const SMESHDS_SubMesh * aSubMeshDSVertex = meshVertices[i]->GetSubMeshDS();
-
- int nbNodes = aSubMeshDSVertex->NbNodes();
- NbTotOfNodesVertices += nbNodes;
- }
-
- vector<SMESH_subMesh*> meshShells;
- TopoDS_Shell aShell;
-
- for (TopExp_Explorer exp(aShape,TopAbs_SHELL);exp.More();exp.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() ) // loop on elements on a geom face
+ {
+ // 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 ))
+ {
+ // 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
+
+ // insert old nodes into nodeVec
+ nodeVec.resize( nodeToNetgenID.size() + 1, 0 );
+ TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
+ for ( ; n_id != nodeToNetgenID.end(); ++n_id )
+ nodeVec[ n_id->second ] = n_id->first;
+ nodeToNetgenID.clear();
+
+ if ( internals.hasInternalVertexInSolid() )
{
- SMESH_subMesh* aSubMesh = aMesh.GetSubMesh(exp.Current());
- ASSERT(aSubMesh);
- aShell = TopoDS::Shell(exp.Current());
- meshShells.push_back(aSubMesh);
+ netgen::OCCGeometry occgeo;
+ NETGENPlugin_Mesher::AddIntVerticesInSolids( occgeo,
+ (netgen::Mesh&) *Netgen_mesh,
+ nodeVec,
+ internals);
}
+ }
- int numberOfShells = meshShells.size();
-
- if (numberOfShells > 0)
- {
- /*
- Prepare the Netgen surface mesh from the SMESHDS
- */
- int spaceDimension = 3;
- int nbNodesByTri = 3;
- int nbNodesByTetra = 4;
-
- int Netgen_NbOfNodes = NbTotOfNodesFaces +
- NbTotOfNodesEdges +
- NbTotOfNodesVertices;
- int Netgen_NbOfTria = NbTotOfTria;
- int Netgen_param2ndOrder = 0;
- double Netgen_paramFine = 1.;
- double Netgen_paramSize = _maxElementVolume;
-
- double * Netgen_Coordinates = new double [spaceDimension*
- Netgen_NbOfNodes];
- int * listNodeCoresNetgenSmesh = new int [Netgen_NbOfNodes];
- int * Netgen_Connectivity = new int [nbNodesByTri*Netgen_NbOfTria];
- double * Netgen_point = new double [spaceDimension];
- int * Netgen_triangle = new int [nbNodesByTri];
- int * Netgen_tetrahedron = new int [nbNodesByTetra];
-
- for (int i=0; i<Netgen_NbOfTria; i++)
- {
- for (int j=0; j<nbNodesByTri; j++)
- Netgen_Connectivity[i*nbNodesByTri+j] = 0;
- }
-
- double bigNumber = 1.e20;
-
- for (int i=0; i<Netgen_NbOfNodes; i++)
- {
- listNodeCoresNetgenSmesh[i] = 0;
- for (int j=0; j<spaceDimension; j++)
- Netgen_Coordinates[i*spaceDimension+j] = bigNumber;
- }
-
- int indexNodes = 0;
- for (int i=0; i<numberOfVertices; i++)
- {
- const SMESHDS_SubMesh * aSubMeshDSVertex =
- meshVertices[i]->GetSubMeshDS();
-
- SMDS_NodeIteratorPtr iteratorNodes = aSubMeshDSVertex->GetNodes();
-
- while(iteratorNodes->more())
- {
- const SMDS_MeshNode * node = iteratorNodes->next();
- int nodeId = node->GetID();
- double nodeX = node->X();
- double nodeY = node->Y();
- double nodeZ = node->Z();
- listNodeCoresNetgenSmesh[indexNodes] = nodeId;
- int index = indexNodes*spaceDimension;
- Netgen_Coordinates[index] = nodeX;
- Netgen_Coordinates[index+1] = nodeY;
- Netgen_Coordinates[index+2] = nodeZ;
- netgenToDS[indexNodes] = node;
- indexNodes++;
- }
- }
-
- for (int i=0; i<numberOfEdges; i++)
- {
- const SMESHDS_SubMesh * aSubMeshDSEdge =
- meshEdges[i]->GetSubMeshDS();
-
- SMDS_NodeIteratorPtr iteratorNodes = aSubMeshDSEdge->GetNodes();
-
- while(iteratorNodes->more())
- {
- const SMDS_MeshNode * node = iteratorNodes->next();
- listNodeCoresNetgenSmesh[indexNodes] = node->GetID();
- int index = indexNodes*spaceDimension;
- Netgen_Coordinates[index] = node->X();
- Netgen_Coordinates[index+1] = node->Y();
- Netgen_Coordinates[index+2] = node->Z();
- netgenToDS[indexNodes] = node;
- indexNodes++;
- }
- }
-
- for (int i=0; i<numberOfFaces; i++)
- {
- const SMESHDS_SubMesh * aSubMeshDSFace =
- meshFaces[i]->GetSubMeshDS();
-
- SMDS_NodeIteratorPtr iteratorNodes = aSubMeshDSFace->GetNodes();
-
- while(iteratorNodes->more())
- {
- const SMDS_MeshNode * node = iteratorNodes->next();
- int nodeId = node->GetID();
- double nodeX = node->X();
- double nodeY = node->Y();
- double nodeZ = node->Z();
-// MESSAGE("NODE -> ID = " << nodeId << " X = " << nodeX << " Y = " << nodeY << " Z = " << nodeZ);
- listNodeCoresNetgenSmesh[indexNodes] = nodeId;
- int index = indexNodes*spaceDimension;
- Netgen_Coordinates[index] = nodeX;
- Netgen_Coordinates[index+1] = nodeY;
- Netgen_Coordinates[index+2] = nodeZ;
- netgenToDS[indexNodes] = node;
- indexNodes++;
- }
- }
-
- for (int i=0; i<Netgen_NbOfNodes; i++)
- {
- ASSERT(listNodeCoresNetgenSmesh[i] != 0);
-
- for (int j=0; j<Netgen_NbOfNodes && j!=i; j++)
- ASSERT(listNodeCoresNetgenSmesh[i] != listNodeCoresNetgenSmesh[j]);
-
- for (int j=0; j<spaceDimension; j++)
- ASSERT(Netgen_Coordinates[i*spaceDimension+j] != bigNumber);
- }
-
- int indexTrias = 0;
- for (int i=0; i<numberOfFaces; i++)
- {
- const SMESHDS_SubMesh * aSubMeshDSFace =
- meshFaces[i]->GetSubMeshDS();
-
- TopoDS_Shape aFace = shapeFaces[i];
-
- SMDS_ElemIteratorPtr iteratorTriangle = aSubMeshDSFace->GetElements();
-
- TopoDS_Shape aShapeFace = meshFaces[i]->GetSubShape();
-
- bool orientationMeshFace = (aFace.Orientation() == aShapeFace.Orientation());
-
- if (orientationMeshFace)
- {
- while(iteratorTriangle->more())
- {
- const SMDS_MeshElement * triangle = iteratorTriangle->next();
-
- SMDS_ElemIteratorPtr triangleNodesIt = triangle->nodesIterator();
-
- int triangleNode1 = (triangleNodesIt->next())->GetID();
- int triangleNode2 = (triangleNodesIt->next())->GetID();
- int triangleNode3 = (triangleNodesIt->next())->GetID();
-
- int N1New = 0;
- int N2New = 0;
- int N3New = 0;
- int index = indexTrias*nbNodesByTri;
-
- for (int j=0; j<Netgen_NbOfNodes; j++)
- {
- int jp1 = j+1;
-
- if (triangleNode1 == listNodeCoresNetgenSmesh[j])
- N1New = jp1;
- else if (triangleNode2 == listNodeCoresNetgenSmesh[j])
- N2New = jp1;
- else if (triangleNode3 == listNodeCoresNetgenSmesh[j])
- N3New = jp1;
- }
-
- triangleNode1 = N1New;
- triangleNode2 = N2New;
- triangleNode3 = N3New;
-
- Netgen_Connectivity[index] = triangleNode1;
- Netgen_Connectivity[index+1] = triangleNode2;
- Netgen_Connectivity[index+2] = triangleNode3;
-
- indexTrias++;
- }
- }
- else
- {
- while(iteratorTriangle->more())
- {
- const SMDS_MeshElement * triangle = iteratorTriangle->next();
-
- SMDS_ElemIteratorPtr triangleNodesIt = triangle->nodesIterator();
-
- int triangleNode1 = (triangleNodesIt->next())->GetID();
- int triangleNode3 = (triangleNodesIt->next())->GetID();
- int triangleNode2 = (triangleNodesIt->next())->GetID();
-
- int N1New = 0;
- int N2New = 0;
- int N3New = 0;
- int index = indexTrias*nbNodesByTri;
-
- for (int j=0; j<Netgen_NbOfNodes; j++)
- {
- int jp1 = j+1;
-
- if (triangleNode1 == listNodeCoresNetgenSmesh[j])
- N1New = jp1;
- else if (triangleNode2 == listNodeCoresNetgenSmesh[j])
- N2New = jp1;
- else if (triangleNode3 == listNodeCoresNetgenSmesh[j])
- N3New = jp1;
- }
-
- triangleNode1 = N1New;
- triangleNode2 = N2New;
- triangleNode3 = N3New;
-
- Netgen_Connectivity[index] = triangleNode1;
- Netgen_Connectivity[index+1] = triangleNode2;
- Netgen_Connectivity[index+2] = triangleNode3;
-
- indexTrias++;
- }
- }
- }
-
- int * nodesUsed = new int[Netgen_NbOfNodes];
-
- for (int i=0; i<Netgen_NbOfNodes; i++) nodesUsed[i] = 0;
-
- for (int i=0; i<Netgen_NbOfTria; i++)
- for (int j=0; j<nbNodesByTri; j++)
- {
- int Nij = Netgen_Connectivity[i*nbNodesByTri+j];
-
- ASSERT((Nij>=1) && (Nij<=Netgen_NbOfNodes));
-
- nodesUsed[Nij-1] = 1;
- Netgen_Connectivity[i*nbNodesByTri+j] = Nij;
- }
-
- for (int i=0; i<Netgen_NbOfNodes; i++)
- {
- ASSERT(nodesUsed[i] != 0);
- }
-
- delete [] nodesUsed;
-
- /*
- Feed the Netgen surface mesh
- */
- Ng_Mesh * Netgen_mesh;
-
- Ng_Init();
-
- Netgen_mesh = Ng_NewMesh();
-
- Ng_Meshing_Parameters Netgen_param;
+ // -------------------------
+ // Generate the volume mesh
+ // -------------------------
- for (int i=0; i<Netgen_NbOfNodes; i++)
- {
- for (int j=0; j<spaceDimension; j++)
- Netgen_point[j] = Netgen_Coordinates[i*spaceDimension+j];
+ return ( ngLib._isComputeOk = compute( aMesh, helper, nodeVec, ngLib ));
+}
- Ng_AddPoint(Netgen_mesh, Netgen_point);
- }
+// 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
+ */
+//================================================================================
- for (int i=0; i<Netgen_NbOfTria; i++)
- {
- for (int j=0; j<nbNodesByTri; j++)
- Netgen_triangle[j] = Netgen_Connectivity[i*nbNodesByTri+j];
+bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
+ SMESH_MesherHelper& helper,
+ vector< const SMDS_MeshNode* >& nodeVec,
+ NETGENPlugin_NetgenLibWrapper& ngLib)
+{
+ netgen::multithread.terminate = 0;
- Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
- }
+ netgen::Mesh* ngMesh = ngLib._ngMesh;
+ Ng_Mesh* Netgen_mesh = ngLib.ngMesh();
+ int Netgen_NbOfNodes = Ng_GetNP( Netgen_mesh );
- Netgen_param.secondorder = Netgen_param2ndOrder;
- Netgen_param.fineness = Netgen_paramFine;
- Netgen_param.maxh = Netgen_paramSize;
+ int startWith = netgen::MESHCONST_MESHVOLUME;
+ int endWith = netgen::MESHCONST_OPTVOLUME;
+ int err = 1;
- /*
- Generate the volume mesh
- */
+ NETGENPlugin_Mesher aMesher( &aMesh, helper.GetSubShape(), /*isVolume=*/true );
+ netgen::OCCGeometry occgeo;
- ASSERT(Netgen_NbOfNodes == Ng_GetNP(Netgen_mesh));
- ASSERT(Ng_GetNE(Netgen_mesh) == 0);
- ASSERT(Netgen_NbOfTria == Ng_GetNSE(Netgen_mesh));
+ if ( _hypParameters )
+ {
+ aMesher.SetParameters( _hypParameters );
- Ng_Result status;
+ 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 {
- status = Ng_GenerateVolumeMesh(Netgen_mesh, &Netgen_param);
- } catch (...) {
- MESSAGE("An exception has been caught during the Volume Mesh Generation ...");
- status = NG_VOLUME_FAILURE;
+ 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() )
+ {
+ 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;
+ }
- int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
-
- int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
-
- MESSAGE("End of Volume Mesh Generation. status=" << status <<
- ", nb new nodes: " << Netgen_NbOfNodesNew - Netgen_NbOfNodes <<
- ", nb tetra: " << Netgen_NbOfTetra);
-
- if ((status != NG_OK) ||
- (Netgen_NbOfTetra <= 0))
- {
- /*
- Free the memory needed by to generate the Netgen Mesh
- */
-
- delete [] Netgen_Coordinates;
- delete [] Netgen_Connectivity;
- delete [] Netgen_point;
- delete [] Netgen_triangle;
- delete [] Netgen_tetrahedron;
-
- delete [] listNodeCoresNetgenSmesh;
-
- Ng_DeleteMesh(Netgen_mesh);
- Ng_Exit();
-
- return false;
- }
-
-
- double * Netgen_CoordinatesNew = new double [spaceDimension*Netgen_NbOfNodesNew];
- int * Netgen_ConnectivityNew = new int [nbNodesByTetra*Netgen_NbOfTetra];
-
- for (int i=0; i<Netgen_NbOfNodesNew; i++)
- {
- Ng_GetPoint(Netgen_mesh, (i+1), Netgen_point);
-
- for (int j=0; j<spaceDimension; j++)
- Netgen_CoordinatesNew[i*spaceDimension+j] = Netgen_point[j];
- }
+ if ( !_hypParameters && aMesh.HasShapeToMesh() )
+ {
+ netgen::mparam.minh = aMesher.GetDefaultMinSize( helper.GetSubShape(), netgen::mparam.maxh );
+ }
- for (int i=0; i<Netgen_NbOfNodes; i++)
- for (int j=0; j<spaceDimension; j++)
- ASSERT(Netgen_CoordinatesNew[i*spaceDimension+j] == Netgen_Coordinates[i*spaceDimension+j])
+ try
+ {
+ OCC_CATCH_SIGNALS;
- for (int i=0; i<Netgen_NbOfTetra; i++)
- {
- Ng_GetVolumeElement(Netgen_mesh, (i+1), Netgen_tetrahedron);
+ ngLib.CalcLocalH(ngMesh);
+ err = ngLib.GenerateMesh(occgeo, startWith, endWith);
- for (int j=0; j<nbNodesByTetra; j++)
- Netgen_ConnectivityNew[i*nbNodesByTetra+j] = Netgen_tetrahedron[j];
- }
+ 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);
+ }
- /*
- Feed back the SMESHDS with the generated Nodes and Volume Elements
- */
+ int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
+ int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
- int NbTotOfNodesShell = Netgen_NbOfNodesNew - Netgen_NbOfNodes;
+ // -------------------------------------------------------------------
+ // Feed back the SMESHDS with the generated Nodes and Volume Elements
+ // -------------------------------------------------------------------
- int * listNodeShellCoresNetgenSmesh = new int [NbTotOfNodesShell];
+ if ( err )
+ {
+ SMESH_ComputeErrorPtr ce = NETGENPlugin_Mesher::ReadErrors(nodeVec);
+ if ( ce && ce->HasBadElems() )
+ error( ce );
+ }
- for (int i=0; i<NbTotOfNodesShell; i++)
- listNodeShellCoresNetgenSmesh[i] = 0;
+ bool isOK = ( /*status == NG_OK &&*/ Netgen_NbOfTetra > 0 );// get whatever built
+ if ( isOK )
+ {
+ double Netgen_point[3];
+ int Netgen_tetrahedron[4];
- for (int i=0; i<NbTotOfNodesShell; i++)
- {
- int index = (i+Netgen_NbOfNodes)*spaceDimension;
+ // 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]);
+ }
- SMDS_MeshNode * node =
- meshDS->AddNode(Netgen_CoordinatesNew[index],
- Netgen_CoordinatesNew[index+1],
- Netgen_CoordinatesNew[index+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 (...)
+ {
+ }
+ }
+ }
- meshDS->SetNodeInVolume(node, aShell);
+ return !err;
+}
- index = i+Netgen_NbOfNodes;
- netgenToDS[index] = node;
+//================================================================================
+/*!
+ * \brief Compute tetrahedral mesh from 2D mesh without geometry
+ */
+//================================================================================
- listNodeShellCoresNetgenSmesh[i] = node->GetID();
- }
+bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
+ SMESH_MesherHelper* aHelper)
+{
+ const int invalid_ID = -1;
- for (int i=0; i<NbTotOfNodesShell; i++)
- {
- ASSERT(listNodeShellCoresNetgenSmesh[i] != 0);
+ netgen::multithread.terminate = 0;
+ _progressByTic = -1.;
- for (int j=0; j<NbTotOfNodesShell && j!=i; j++)
- ASSERT(listNodeShellCoresNetgenSmesh[i] != listNodeShellCoresNetgenSmesh[j]);
- }
+ 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"));
- for (int i=0; i<Netgen_NbOfTetra; i++)
- {
- int index = i*nbNodesByTetra;
- int tetraNode1 = Netgen_ConnectivityNew[index];
- int tetraNode2 = Netgen_ConnectivityNew[index+1];
- int tetraNode3 = Netgen_ConnectivityNew[index+2];
- int tetraNode4 = Netgen_ConnectivityNew[index+3];
+ aHelper->SetIsQuadratic( MeshType == SMESH_MesherHelper::QUADRATIC );
- const SMDS_MeshNode * node1 = netgenToDS[tetraNode1-1];
- const SMDS_MeshNode * node2 = netgenToDS[tetraNode2-1];
- const SMDS_MeshNode * node3 = netgenToDS[tetraNode3-1];
- const SMDS_MeshNode * node4 = netgenToDS[tetraNode4-1];
+ // ---------------------------------
+ // Feed the Netgen with surface mesh
+ // ---------------------------------
- index = tetraNode1;
- if (index <= Netgen_NbOfNodes)
- tetraNode1 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode1 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
+ int Netgen_NbOfNodes = 0;
+ double Netgen_point[3];
+ int Netgen_triangle[3];
- index = tetraNode2;
- if (index <= Netgen_NbOfNodes)
- tetraNode2 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode2 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
+ NETGENPlugin_NetgenLibWrapper ngLib;
+ Ng_Mesh * Netgen_mesh = ngLib.ngMesh();
- index = tetraNode3;
- if (index <= Netgen_NbOfNodes)
- tetraNode3 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode3 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
+ SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
+ if ( aMesh.NbQuadrangles() > 0 )
+ {
+ StdMeshers_QuadToTriaAdaptor* Adaptor = new StdMeshers_QuadToTriaAdaptor;
+ Adaptor->Compute(aMesh);
+ proxyMesh.reset( Adaptor );
- index = tetraNode4;
- if (index <= Netgen_NbOfNodes)
- tetraNode4 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode4 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
+ if ( aHelper->IsQuadraticMesh() )
+ {
+ SMDS_ElemIteratorPtr fIt = proxyMesh->GetFaces();
+ while( fIt->more())
+ aHelper->AddTLinks( static_cast< const SMDS_MeshFace* >( fIt->next() ));
+ }
+ }
- SMDS_MeshVolume * elt =
- meshDS->AddVolume(node1,node2,node3,node4);
+ // maps nodes to ng ID
+ typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
+ typedef TNodeToIDMap::value_type TN2ID;
+ TNodeToIDMap nodeToNetgenID;
- meshDS->SetMeshElementOnShape(elt, aShell);
- }
-
- /*
- Free the memory needed by to generate the Netgen Mesh
- */
-
- delete [] Netgen_Coordinates;
- delete [] Netgen_Connectivity;
- delete [] Netgen_CoordinatesNew;
- delete [] Netgen_ConnectivityNew;
- delete [] Netgen_point;
- delete [] Netgen_triangle;
- delete [] Netgen_tetrahedron;
-
- delete [] listNodeCoresNetgenSmesh;
- delete [] listNodeShellCoresNetgenSmesh;
-
- Ng_DeleteMesh(Netgen_mesh);
- Ng_Exit();
-
- return true;
+ SMDS_ElemIteratorPtr fIt = proxyMesh->GetFaces();
+ while( fIt->more())
+ {
+ // check element
+ const SMDS_MeshElement* elem = fIt->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 three nodes of triangle
+ for ( int iN = 0; iN < 3; ++iN )
+ {
+ const SMDS_MeshNode* node = elem->GetNode( iN );
+ 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[ iN ] = ngID;
}
+ Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
+ }
+ proxyMesh.reset(); // delete tmp faces
- return false;
-}
+ // vector of nodes in which node index == netgen ID
+ vector< const SMDS_MeshNode* > nodeVec ( nodeToNetgenID.size() + 1 );
+ // insert old nodes into nodeVec
+ TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
+ for ( ; n_id != nodeToNetgenID.end(); ++n_id )
+ nodeVec.at( n_id->second ) = n_id->first;
+ nodeToNetgenID.clear();
+ // -------------------------
+ // Generate the volume mesh
+ // -------------------------
-//=============================================================================
-/*!
- *
- */
-//=============================================================================
+ return ( ngLib._isComputeOk = compute( aMesh, *aHelper, nodeVec, ngLib ));
+}
-ostream & NETGENPlugin_NETGEN_3D::SaveTo(ostream & save)
+void NETGENPlugin_NETGEN_3D::CancelCompute()
{
- return save;
+ SMESH_Algo::CancelCompute();
+ netgen::multithread.terminate = 1;
}
-//=============================================================================
+//================================================================================
/*!
- *
+ * \brief Return Compute progress
*/
-//=============================================================================
+//================================================================================
-istream & NETGENPlugin_NETGEN_3D::LoadFrom(istream & load)
+double NETGENPlugin_NETGEN_3D::GetProgress() const
{
- return load;
+ 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.;
+ //cout << netgen::multithread.task << " " <<_progressTic << "-" << netgen::multithread.percent << endl;
+ }
+ else // different otimizations
+ {
+ if ( _progressByTic < 0. )
+ ((NETGENPlugin_NETGEN_3D*)this)->_progressByTic = meshingRatio / _progressTic;
+ res = _progressByTic * _progressTic;
+ //cout << netgen::multithread.task << " " << _progressTic << " " << res << endl;
+ }
+ return Min ( res, 0.98 );
}
//=============================================================================
/*!
- *
+ *
*/
//=============================================================================
-ostream & operator << (ostream & save, NETGENPlugin_NETGEN_3D & hyp)
+bool NETGENPlugin_NETGEN_3D::Evaluate(SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape,
+ MapShapeNbElems& aResMap)
{
- return hyp.SaveTo( save );
+ 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() );
+ SMESH_subMesh *sm = aMesh.GetSubMesh(F);
+ MapShapeNbElemsItr anIt = aResMap.find(sm);
+ if( anIt==aResMap.end() ) {
+ SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
+ smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,"Submesh can not be evaluated",this));
+ return false;
+ }
+ 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();
+ fullArea += anArea;
+ }
+
+ // collect info from edges
+ smIdType nb0d_e = 0, nb1d_e = 0;
+ bool IsQuadratic = false;
+ bool IsFirst = true;
+ TopTools_MapOfShape tmpMap;
+ for (TopExp_Explorer expF(aShape, TopAbs_EDGE); expF.More(); expF.Next()) {
+ TopoDS_Edge E = TopoDS::Edge(expF.Current());
+ if( tmpMap.Contains(E) )
+ continue;
+ tmpMap.Add(E);
+ SMESH_subMesh *aSubMesh = aMesh.GetSubMesh(expF.Current());
+ MapShapeNbElemsItr anIt = aResMap.find(aSubMesh);
+ if( anIt==aResMap.end() ) {
+ SMESH_ComputeErrorPtr& smError = aSubMesh->GetComputeError();
+ smError.reset( new SMESH_ComputeError(COMPERR_ALGO_FAILED,
+ "Submesh can not be evaluated",this));
+ return false;
+ }
+ std::vector<smIdType> aVec = (*anIt).second;
+ nb0d_e += aVec[SMDSEntity_Node];
+ 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/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);
+
+ GProp_GProps G;
+ BRepGProp::VolumeProperties(aShape,G);
+ double aVolume = G.Mass();
+ double tetrVol = 0.1179*ELen*ELen*ELen;
+ double CoeffQuality = 0.9;
+ 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;
+ aVec[SMDSEntity_Quad_Pyramid] = nbqua;
+ }
+ else {
+ aVec[SMDSEntity_Node] = nb1d_in/6 + 1;
+ aVec[SMDSEntity_Tetra] = nbVols - nbqua*2;
+ aVec[SMDSEntity_Pyramid] = nbqua;
+ }
+ SMESH_subMesh *sm = aMesh.GetSubMesh(aShape);
+ aResMap.insert(std::make_pair(sm,aVec));
+
+ return true;
}
-//=============================================================================
-/*!
- *
- */
-//=============================================================================
-istream & operator >> (istream & load, NETGENPlugin_NETGEN_3D & hyp)
-{
- return hyp.LoadFrom( load );
-}
