-// Copyright (C) 2007-2008 CEA/DEN, EDF R&D, OPEN CASCADE
+// Copyright (C) 2007-2015 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
+// 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.
+// 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.
+// 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
+// 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
+// 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
-// $Header$
//=============================================================================
//
#include "NETGENPlugin_NETGEN_3D.hxx"
-#include "NETGENPlugin_Mesher.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_MesherHelper.hxx"
-#include "StdMeshers_QuadToTriaAdaptor.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 <TopExp_Explorer.hxx>
+#include <TopTools_ListIteratorOfListOfShape.hxx>
#include <TopoDS.hxx>
#include <Standard_Failure.hxx>
#include <Standard_ErrorHandler.hxx>
-#include "utilities.h"
+#include <utilities.h>
#include <list>
#include <vector>
Netgen include files
*/
+#ifndef OCCGEOMETRY
+#define OCCGEOMETRY
+#endif
+#include <occgeom.hpp>
namespace nglib {
#include <nglib.h>
}
+namespace netgen {
+#ifdef NETGEN_V5
+ extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, MeshingParameters&, int, int);
+#else
+ extern int OCCGenerateMesh (OCCGeometry&, Mesh*&, int, int, char*);
+#endif
+ extern MeshingParameters mparam;
+ extern volatile multithreadt multithread;
+}
using namespace nglib;
+using namespace std;
//=============================================================================
/*!
//=============================================================================
NETGENPlugin_NETGEN_3D::NETGENPlugin_NETGEN_3D(int hypId, int studyId,
- SMESH_Gen* gen)
+ SMESH_Gen* gen)
: SMESH_3D_Algo(hypId, studyId, 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");
+ _compatibleHypothesis.push_back("NETGEN_Parameters");
+ _compatibleHypothesis.push_back("ViscousLayers");
_maxElementVolume = 0.;
_hypMaxElementVolume = NULL;
+ _hypParameters = NULL;
+ _viscousLayersHyp = NULL;
_requireShape = false; // can work without shape
}
*/
//=============================================================================
-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 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_OK;
- //aStatus = SMESH_Hypothesis::HYP_MISSING;
return true; // can work with no hypothesis
}
- itl = hyps.begin();
- theHyp = (*itl); // use only the first hypothesis
-
- string hypName = theHyp->GetName();
-
- 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)
+ 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();
- const int invalid_ID = -1;
+ SMESH_MesherHelper helper(aMesh);
+ bool _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
+ helper.SetElementsOnShape( true );
- SMESH::Controls::Area areaControl;
- SMESH::Controls::TSequenceOfXYZ nodesCoords;
+ int Netgen_NbOfNodes = 0;
+ double Netgen_point[3];
+ int Netgen_triangle[3];
- // -------------------------------------------------------------------
- // get triangles on aShell and make a map of nodes to Netgen node IDs
- // -------------------------------------------------------------------
+ NETGENPlugin_NetgenLibWrapper ngLib;
+ Ng_Mesh * Netgen_mesh = ngLib._ngMesh;
- SMESH_MesherHelper helper(aMesh);
- SMESH_MesherHelper* myTool = &helper;
- bool _quadraticMesh = myTool->IsQuadraticSubMesh(aShape);
+ // vector of nodes in which node index == netgen ID
+ vector< const SMDS_MeshNode* > nodeVec;
+ {
+ const int invalid_ID = -1;
- typedef map< const SMDS_MeshNode*, int> TNodeToIDMap;
- TNodeToIDMap nodeToNetgenID;
- list< const SMDS_MeshElement* > triangles;
- list< bool > isReversed; // orientation of triangles
+ SMESH::Controls::Area areaControl;
+ SMESH::Controls::TSequenceOfXYZ nodesCoords;
- TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
- bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
+ // maps nodes to ng ID
+ typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
+ typedef TNodeToIDMap::value_type TN2ID;
+ TNodeToIDMap nodeToNetgenID;
- // for the degeneraged edge: ignore all but one node on it;
- // map storing ids of degen edges and vertices and their netgen id:
- map< int, int* > degenShapeIdToPtrNgId;
- map< int, int* >::iterator shId_ngId;
- list< int > degenNgIds;
+ // find internal shapes
+ NETGENPlugin_Internals internals( aMesh, aShape, /*is3D=*/true );
- StdMeshers_QuadToTriaAdaptor Adaptor;
- Adaptor.Compute(aMesh,aShape);
+ // ---------------------------------
+ // Feed the Netgen with surface mesh
+ // ---------------------------------
- for (TopExp_Explorer exp(aShape,TopAbs_FACE);exp.More();exp.Next())
- {
- const TopoDS_Shape& aShapeFace = exp.Current();
- const SMESHDS_SubMesh * aSubMeshDSFace = meshDS->MeshElements( aShapeFace );
- if ( aSubMeshDSFace )
+ TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
+ bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
+
+ 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())
+ {
+ const TopoDS_Shape& aShapeFace = exFa.Current();
+ int faceID = meshDS->ShapeToIndex( aShapeFace );
+ bool isInternalFace = internals.isInternalShape( faceID );
bool isRev = false;
- if ( checkReverse && helper.NbAncestors(aShapeFace, aMesh, aShape.ShapeType()) > 1 )
+ 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 );
+ 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 face
+ while ( iteratorElem->more() ) // loop on elements on a geom face
{
- // check element
+ // check mesh face
const SMDS_MeshElement* elem = iteratorElem->next();
if ( !elem )
return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
- bool isTraingle = ( elem->NbNodes()==3 || (_quadraticMesh && elem->NbNodes()==6 ));
- if ( !isTraingle ) {
- //return error( COMPERR_BAD_INPUT_MESH,
- // SMESH_Comment("Not triangle element ")<<elem->GetID());
- // using adaptor
- std::list<const SMDS_FaceOfNodes*> faces = Adaptor.GetTriangles(elem);
- if(faces.size()==0) {
- return error( COMPERR_BAD_INPUT_MESH,
- SMESH_Comment("Not triangles in adaptor for element ")<<elem->GetID());
+ 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;
}
- std::list<const SMDS_FaceOfNodes*>::iterator itf = faces.begin();
- for(; itf!=faces.end(); itf++ ) {
- triangles.push_back( (*itf) );
- isReversed.push_back( isRev );
- // put triange's nodes to nodeToNetgenID map
- SMDS_ElemIteratorPtr triangleNodesIt = (*itf)->nodesIterator();
- while ( triangleNodesIt->more() ) {
- const SMDS_MeshNode * node =
- static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
- if(myTool->IsMedium(node))
- continue;
- nodeToNetgenID.insert( make_pair( node, invalid_ID ));
- }
+ 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;
}
- else {
- // keep a triangle
- triangles.push_back( elem );
- isReversed.push_back( isRev );
- // put elem nodes to nodeToNetgenID map
- SMDS_ElemIteratorPtr triangleNodesIt = elem->nodesIterator();
- while ( triangleNodesIt->more() ) {
- const SMDS_MeshNode * node =
- static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
- if(myTool->IsMedium(node))
- continue;
- nodeToNetgenID.insert( make_pair( node, invalid_ID ));
- }
+ // 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);
}
-#ifdef _DEBUG_
- // check if a trainge is degenerated
- areaControl.GetPoints( elem, nodesCoords );
- double area = areaControl.GetValue( nodesCoords );
- if ( area <= DBL_MIN ) {
- MESSAGE( "Warning: Degenerated " << elem );
+ } // 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() )
+ {
+ netgen::OCCGeometry occgeo;
+ NETGENPlugin_Mesher::AddIntVerticesInSolids( occgeo,
+ (netgen::Mesh&) *Netgen_mesh,
+ nodeVec,
+ internals);
+ }
+ }
+
+ // -------------------------
+ // Generate the volume mesh
+ // -------------------------
+
+ return ( ngLib._isComputeOk = compute( aMesh, helper, nodeVec, Netgen_mesh));
+}
+
+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++;
}
-#endif
}
- // look for degeneraged edges and vetices
- for (TopExp_Explorer expE(aShapeFace,TopAbs_EDGE);expE.More();expE.Next())
+ }
+ 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 )
{
- TopoDS_Edge aShapeEdge = TopoDS::Edge( expE.Current() );
- if ( BRep_Tool::Degenerated( aShapeEdge ))
+ p.Y() = pmin.Y() + j * dy / nbY;
+ for ( int k = 0; k <= nbZ; ++k )
{
- degenNgIds.push_back( invalid_ID );
- int* ptrIdOnEdge = & degenNgIds.back();
- // remember edge id
- int edgeID = meshDS->ShapeToIndex( aShapeEdge );
- degenShapeIdToPtrNgId.insert( make_pair( edgeID, ptrIdOnEdge ));
- // remember vertex id
- int vertexID = meshDS->ShapeToIndex( TopExp::FirstVertex( aShapeEdge ));
- degenShapeIdToPtrNgId.insert( make_pair( vertexID, ptrIdOnEdge ));
+ p.Z() = pmin.Z() + k * dz / nbZ;
+ ngMesh->RestrictLocalH( p, maxh );
}
}
}
}
- // ---------------------------------
- // 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. );
+//================================================================================
+/*!
+ * \brief set parameters and generate the volume mesh
+ */
+//================================================================================
- double Netgen_point[3];
- int Netgen_triangle[3];
- int Netgen_tetrahedron[4];
+bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
+ SMESH_MesherHelper& helper,
+ vector< const SMDS_MeshNode* >& nodeVec,
+ Ng_Mesh * Netgen_mesh)
+{
+ netgen::multithread.terminate = 0;
- Ng_Init();
+ netgen::Mesh* ngMesh = (netgen::Mesh*)Netgen_mesh;
+ int Netgen_NbOfNodes = Ng_GetNP(Netgen_mesh);
- Ng_Mesh * Netgen_mesh = Ng_NewMesh();
+#ifndef NETGEN_V5
+ char *optstr = 0;
+#endif
+ int startWith = netgen::MESHCONST_MESHVOLUME;
+ int endWith = netgen::MESHCONST_OPTVOLUME;
+ int err = 1;
- // set nodes and remember thier netgen IDs
- bool isDegen = false, hasDegen = !degenShapeIdToPtrNgId.empty();
- TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
- for ( ; n_id != nodeToNetgenID.end(); ++n_id )
+ NETGENPlugin_Mesher aMesher( &aMesh, helper.GetSubShape(), /*isVolume=*/true );
+ netgen::OCCGeometry occgeo;
+
+ if ( _hypParameters )
{
- const SMDS_MeshNode* node = n_id->first;
-
- // ignore nodes on degenerated edge
- if ( hasDegen ) {
- int shapeId = node->GetPosition()->GetShapeId();
- shId_ngId = degenShapeIdToPtrNgId.find( shapeId );
- isDegen = ( shId_ngId != degenShapeIdToPtrNgId.end() );
- if ( isDegen && *(shId_ngId->second) != invalid_ID ) {
- n_id->second = *(shId_ngId->second);
- continue;
- }
- }
- Netgen_point [ 0 ] = node->X();
- Netgen_point [ 1 ] = node->Y();
- Netgen_point [ 2 ] = node->Z();
- Ng_AddPoint(Netgen_mesh, Netgen_point);
- n_id->second = ++Netgen_NbOfNodes; // set netgen ID
-
- if ( isDegen ) // all nodes on a degen edge get one netgen ID
- *(shId_ngId->second) = n_id->second;
+ aMesher.SetParameters( _hypParameters );
+ if ( !_hypParameters->GetOptimize() )
+ endWith = netgen::MESHCONST_MESHVOLUME;
}
-
- // set triangles
- list< const SMDS_MeshElement* >::iterator tria = triangles.begin();
- list< bool >::iterator reverse = isReversed.begin();
- for ( ; tria != triangles.end(); ++tria, ++reverse )
+ else if ( _hypMaxElementVolume )
{
- int i = 0;
- SMDS_ElemIteratorPtr triangleNodesIt = (*tria)->nodesIterator();
- while ( triangleNodesIt->more() ) {
- const SMDS_MeshNode * node =
- static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
- if(myTool->IsMedium(node))
- continue;
- Netgen_triangle[ *reverse ? 2 - i : i ] = nodeToNetgenID[ node ];
- ++i;
- }
- if ( !hasDegen ||
- // ignore degenerated triangles, they have 2 or 3 same ids
- (Netgen_triangle[0] != Netgen_triangle[1] &&
- Netgen_triangle[0] != Netgen_triangle[2] &&
- Netgen_triangle[2] != Netgen_triangle[1] ))
- {
- Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
- }
+ 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;
}
- // -------------------------
- // Generate the volume mesh
- // -------------------------
-
- Ng_Meshing_Parameters Netgen_param;
-
- Netgen_param.secondorder = Netgen_param2ndOrder;
- Netgen_param.fineness = Netgen_paramFine;
- Netgen_param.maxh = Netgen_paramSize;
-
- Ng_Result status;
+ if ( !_hypParameters && aMesh.HasShapeToMesh() )
+ {
+ netgen::mparam.minh = aMesher.GetDefaultMinSize( helper.GetSubShape(), netgen::mparam.maxh );
+ }
- try {
+ try
+ {
#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
OCC_CATCH_SIGNALS;
#endif
- status = Ng_GenerateVolumeMesh(Netgen_mesh, &Netgen_param);
+#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 )
+ error(SMESH_Comment("Error in netgen::OCCGenerateMesh() at ") << netgen::multithread.task);
}
- catch (Standard_Failure& exc) {
- error(COMPERR_OCC_EXCEPTION, exc.GetMessageString());
- status = NG_VOLUME_FAILURE;
+ 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 (...) {
- error("Exception in Ng_GenerateVolumeMesh()");
- status = NG_VOLUME_FAILURE;
+ catch (netgen::NgException exc)
+ {
+ SMESH_Comment str("NgException");
+ if ( strlen( netgen::multithread.task ) > 0 )
+ str << " at " << netgen::multithread.task;
+ str << ": " << exc.What();
+ error(str);
}
- if ( GetComputeError()->IsOK() ) {
- switch ( status ) {
- case NG_SURFACE_INPUT_ERROR:error( status, "NG_SURFACE_INPUT_ERROR");
- case NG_VOLUME_FAILURE: error( status, "NG_VOLUME_FAILURE");
- case NG_STL_INPUT_ERROR: error( status, "NG_STL_INPUT_ERROR");
- case NG_SURFACE_FAILURE: error( status, "NG_SURFACE_FAILURE");
- case NG_FILE_NOT_FOUND: error( status, "NG_FILE_NOT_FOUND");
- };
+ catch (...)
+ {
+ SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
+ 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);
- int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
-
- MESSAGE("End of Volume Mesh Generation. status=" << status <<
+ 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() )
+ error( ce );
+ }
+
bool isOK = ( /*status == NG_OK &&*/ Netgen_NbOfTetra > 0 );// get whatever built
if ( isOK )
{
- // vector of nodes in which node index == netgen ID
- vector< const SMDS_MeshNode* > nodeVec ( Netgen_NbOfNodesNew + 1 );
- // insert old nodes into nodeVec
- for ( n_id = nodeToNetgenID.begin(); n_id != nodeToNetgenID.end(); ++n_id ) {
- nodeVec.at( n_id->second ) = n_id->first;
- }
+ 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;
- int shapeID = meshDS->ShapeToIndex( aShape );
for ( ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
{
Ng_GetPoint( Netgen_mesh, nodeIndex, Netgen_point );
- SMDS_MeshNode * node = meshDS->AddNode(Netgen_point[0],
- Netgen_point[1],
- Netgen_point[2]);
- meshDS->SetNodeInVolume(node, shapeID);
- nodeVec.at(nodeIndex) = node;
+ 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);
- SMDS_MeshVolume * elt = myTool->AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
- nodeVec.at( Netgen_tetrahedron[1] ),
- nodeVec.at( Netgen_tetrahedron[2] ),
- nodeVec.at( Netgen_tetrahedron[3] ));
- meshDS->SetMeshElementOnShape(elt, shapeID );
+ try
+ {
+ helper.AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
+ nodeVec.at( Netgen_tetrahedron[1] ),
+ nodeVec.at( Netgen_tetrahedron[2] ),
+ nodeVec.at( Netgen_tetrahedron[3] ));
+ }
+ catch (...)
+ {
+ }
}
}
- Ng_DeleteMesh(Netgen_mesh);
- Ng_Exit();
-
- NETGENPlugin_Mesher::RemoveTmpFiles();
-
- return (status == NG_OK);
+ return !err;
}
-bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
+//================================================================================
+/*!
+ * \brief Compute tetrahedral mesh from 2D mesh without geometry
+ */
+//================================================================================
+
+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;
- typedef map< const SMDS_MeshNode*, int> TNodeToIDMap;
- TNodeToIDMap nodeToNetgenID;
- list< const SMDS_MeshElement* > triangles;
- SMESHDS_Mesh* MeshDS = aHelper->GetMeshDS();
+
+ netgen::multithread.terminate = 0;
+ _progressByTic = -1.;
SMESH_MesherHelper::MType MeshType = aHelper->IsQuadraticMesh();
-
- if(MeshType == SMESH_MesherHelper::COMP)
+ 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;
-
- StdMeshers_QuadToTriaAdaptor Adaptor;
- Adaptor.Compute(aMesh);
-
- SMDS_FaceIteratorPtr iteratorFace = MeshDS->facesIterator();
- while(iteratorFace->more()) {
- // check element
- const SMDS_MeshElement* elem = iteratorFace->next();
- if ( !elem )
- return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
- bool isTraingle = ( elem->NbNodes()==3 || (_quadraticMesh && elem->NbNodes()==6 ));
- if ( !isTraingle ) {
- //return error( COMPERR_BAD_INPUT_MESH,
- // SMESH_Comment("Not triangle element ")<<elem->GetID());
- // using adaptor
- std::list<const SMDS_FaceOfNodes*> faces = Adaptor.GetTriangles(elem);
- if(faces.size()==0) {
- return error( COMPERR_BAD_INPUT_MESH,
- SMESH_Comment("Not triangles in adaptor for element ")<<elem->GetID());
- }
- std::list<const SMDS_FaceOfNodes*>::iterator itf = faces.begin();
- for(; itf!=faces.end(); itf++ ) {
- triangles.push_back( (*itf) );
- // put triange's nodes to nodeToNetgenID map
- SMDS_ElemIteratorPtr triangleNodesIt = (*itf)->nodesIterator();
- while ( triangleNodesIt->more() ) {
- const SMDS_MeshNode * node =
- static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
- if(aHelper->IsMedium(node))
- continue;
- nodeToNetgenID.insert( make_pair( node, invalid_ID ));
- }
- }
- }
- else {
- // keep a triangle
- triangles.push_back( elem );
- // put elem nodes to nodeToNetgenID map
- SMDS_ElemIteratorPtr triangleNodesIt = elem->nodesIterator();
- while ( triangleNodesIt->more() ) {
- const SMDS_MeshNode * node =
- static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
- if(aHelper->IsMedium(node))
- continue;
- nodeToNetgenID.insert( make_pair( node, invalid_ID ));
- }
- }
- }
+ SMESH_Comment("Mesh with linear and quadratic elements given"));
+
+ aHelper->SetIsQuadratic( MeshType == SMESH_MesherHelper::QUADRATIC );
// ---------------------------------
// Feed the Netgen with surface mesh
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];
- Ng_Init();
-
- Ng_Mesh * Netgen_mesh = Ng_NewMesh();
+ NETGENPlugin_NetgenLibWrapper ngLib;
+ Ng_Mesh * Netgen_mesh = ngLib._ngMesh;
- // set nodes and remember thier netgen IDs
-
- TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
- for ( ; n_id != nodeToNetgenID.end(); ++n_id )
+ SMESH_ProxyMesh::Ptr proxyMesh( new SMESH_ProxyMesh( aMesh ));
+ if ( aMesh.NbQuadrangles() > 0 )
{
- const SMDS_MeshNode* node = n_id->first;
-
- Netgen_point [ 0 ] = node->X();
- Netgen_point [ 1 ] = node->Y();
- Netgen_point [ 2 ] = node->Z();
- Ng_AddPoint(Netgen_mesh, Netgen_point);
- n_id->second = ++Netgen_NbOfNodes; // set netgen ID
-
+ StdMeshers_QuadToTriaAdaptor* Adaptor = new StdMeshers_QuadToTriaAdaptor;
+ Adaptor->Compute(aMesh);
+ proxyMesh.reset( Adaptor );
}
- // set triangles
- list< const SMDS_MeshElement* >::iterator tria = triangles.begin();
- for ( ; tria != triangles.end(); ++tria)
+ // maps nodes to ng ID
+ typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
+ typedef TNodeToIDMap::value_type TN2ID;
+ TNodeToIDMap nodeToNetgenID;
+
+ SMDS_ElemIteratorPtr fIt = proxyMesh->GetFaces();
+ while( fIt->more())
{
- int i = 0;
- SMDS_ElemIteratorPtr triangleNodesIt = (*tria)->nodesIterator();
- while ( triangleNodesIt->more() ) {
- const SMDS_MeshNode * node =
- static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
- if(aHelper->IsMedium(node))
- continue;
- Netgen_triangle[ i ] = nodeToNetgenID[ node ];
- ++i;
+ // 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
+
+ // 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
// -------------------------
- Ng_Meshing_Parameters Netgen_param;
+ return ( ngLib._isComputeOk = compute( aMesh, *aHelper, nodeVec, Netgen_mesh));
+}
- Netgen_param.secondorder = Netgen_param2ndOrder;
- Netgen_param.fineness = Netgen_paramFine;
- Netgen_param.maxh = Netgen_paramSize;
+void NETGENPlugin_NETGEN_3D::CancelCompute()
+{
+ SMESH_Algo::CancelCompute();
+ netgen::multithread.terminate = 1;
+}
- Ng_Result status;
+//================================================================================
+/*!
+ * \brief Return Compute progress
+ */
+//================================================================================
- try {
-#if (OCC_VERSION_MAJOR << 16 | OCC_VERSION_MINOR << 8 | OCC_VERSION_MAINTENANCE) > 0x060100
- OCC_CATCH_SIGNALS;
-#endif
- status = Ng_GenerateVolumeMesh(Netgen_mesh, &Netgen_param);
- }
- catch (Standard_Failure& exc) {
- error(COMPERR_OCC_EXCEPTION, exc.GetMessageString());
- status = NG_VOLUME_FAILURE;
- }
- catch (...) {
- error("Bad mesh input!!!");
- status = NG_VOLUME_FAILURE;
+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.;
+ //cout << netgen::multithread.task << " " <<_progressTic << "-" << netgen::multithread.percent << endl;
}
- if ( GetComputeError()->IsOK() ) {
- error( status, "Bad mesh input!!!");
+ 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 );
+}
- 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);
-
- // -------------------------------------------------------------------
- // Feed back the SMESHDS with the generated Nodes and Volume Elements
- // -------------------------------------------------------------------
+//=============================================================================
+/*!
+ *
+ */
+//=============================================================================
- bool isOK = ( Netgen_NbOfTetra > 0 );// get whatever built
- if ( isOK )
- {
- // vector of nodes in which node index == netgen ID
- vector< const SMDS_MeshNode* > nodeVec ( Netgen_NbOfNodesNew + 1 );
- // insert old nodes into nodeVec
- for ( n_id = nodeToNetgenID.begin(); n_id != nodeToNetgenID.end(); ++n_id ) {
- nodeVec.at( n_id->second ) = n_id->first;
- }
- // create and insert new nodes into nodeVec
- int nodeIndex = Netgen_NbOfNodes + 1;
-
- for ( ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
- {
- Ng_GetPoint( Netgen_mesh, nodeIndex, Netgen_point );
- SMDS_MeshNode * node = aHelper->AddNode(Netgen_point[0],
- Netgen_point[1],
- Netgen_point[2]);
- nodeVec.at(nodeIndex) = node;
+bool NETGENPlugin_NETGEN_3D::Evaluate(SMESH_Mesh& aMesh,
+ const TopoDS_Shape& aShape,
+ MapShapeNbElems& aResMap)
+{
+ int 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<int> aVec = (*anIt).second;
+ nbtri += Max(aVec[SMDSEntity_Triangle],aVec[SMDSEntity_Quad_Triangle]);
+ nbqua += Max(aVec[SMDSEntity_Quadrangle],aVec[SMDSEntity_Quad_Quadrangle]);
+ GProp_GProps G;
+ BRepGProp::SurfaceProperties(F,G);
+ double anArea = G.Mass();
+ fullArea += anArea;
+ }
- // create tetrahedrons
- for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
- {
- Ng_GetVolumeElement(Netgen_mesh, elemIndex, Netgen_tetrahedron);
- aHelper->AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
- nodeVec.at( Netgen_tetrahedron[1] ),
- nodeVec.at( Netgen_tetrahedron[2] ),
- nodeVec.at( Netgen_tetrahedron[3] ));
+ // collect info from edges
+ int 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<int> aVec = (*anIt).second;
+ nb0d_e += aVec[SMDSEntity_Node];
+ nb1d_e += Max(aVec[SMDSEntity_Edge],aVec[SMDSEntity_Quad_Edge]);
+ if(IsFirst) {
+ IsQuadratic = (aVec[SMDSEntity_Quad_Edge] > aVec[SMDSEntity_Edge]);
+ IsFirst = false;
}
}
-
- Ng_DeleteMesh(Netgen_mesh);
- Ng_Exit();
-
- NETGENPlugin_Mesher::RemoveTmpFiles();
+ tmpMap.Clear();
+
+ double ELen_face = sqrt(2.* ( fullArea/(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;
+ 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;
+ 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 (status == NG_OK);
+ return true;
}
+
+