+// Copyright (C) 2007-2010 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.
+//
+// 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 "NETGENPlugin_Mesher.hxx"
#include "SMDS_MeshElement.hxx"
#include "SMDS_MeshNode.hxx"
-#include "SMDS_FacePosition.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 "SMESH_MeshEditor.hxx"
+#include "StdMeshers_QuadToTriaAdaptor.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 <list>
+#include <vector>
+#include <map>
+
/*
Netgen include files
*/
-#include "nglib.h"
+#define OCCGEOMETRY
+#include <occgeom.hpp>
+namespace nglib {
+#include <nglib.h>
+}
+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 = TopAbs_SOLID;
_shapeType = (1 << TopAbs_SHELL) | (1 << TopAbs_SOLID);// 1 bit /shape type
-// MESSAGE("_shapeType octal " << oct << _shapeType);
_compatibleHypothesis.push_back("MaxElementVolume");
_maxElementVolume = 0.;
_hypMaxElementVolume = 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;
+ _maxElementVolume = DBL_MAX;
list<const SMESHDS_Hypothesis*>::const_iterator itl;
const SMESHDS_Hypothesis* theHyp;
int nbHyp = hyps.size();
if (!nbHyp)
{
- aStatus = SMESH_Hypothesis::HYP_MISSING;
- return false; // can't work with no hypothesis
+ 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();
-// int hypId = theHyp->GetID();
-// SCRUTE(hypName);
bool isOk = false;
SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
- map<int, const SMDS_MeshNode*> netgenToDS;
-
- // check if all faces were meshed by a triangle mesher (here MESFISTO_2D)
-
- vector<SMESH_subMesh*> meshFaces;
- vector<TopoDS_Shape> shapeFaces;
+ SMESH_MesherHelper helper(aMesh);
+ bool _quadraticMesh = helper.IsQuadraticSubMesh(aShape);
+ helper.SetElementsOnShape( true );
- 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);
- }
+ int Netgen_NbOfNodes = 0;
+ int Netgen_param2ndOrder = 0;
+ double Netgen_paramFine = 1.;
+ double Netgen_paramSize = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
- int numberOfFaces = meshFaces.size();
+ double Netgen_point[3];
+ int Netgen_triangle[3];
+ int Netgen_tetrahedron[4];
- int NbTotOfTria = 0;
- int NbTotOfNodesFaces = 0;
+ NETGENPlugin_NetgenLibWrapper ngLib;
+ Ng_Mesh * Netgen_mesh = ngLib._ngMesh;
- 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");
-
- }
-
- // check if all edges were meshed by a edge mesher (here Regular_1D)
-
- 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);
- }
+ // vector of nodes in which node index == netgen ID
+ vector< const SMDS_MeshNode* > nodeVec;
+ {
+ const int invalid_ID = -1;
- int numberOfEdges = meshEdges.size();
+ SMESH::Controls::Area areaControl;
+ SMESH::Controls::TSequenceOfXYZ nodesCoords;
- int NbTotOfNodesEdges = 0;
- int NbTotOfSegs = 0;
+ // maps nodes to ng ID
+ typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
+ typedef TNodeToIDMap::value_type TN2ID;
+ TNodeToIDMap nodeToNetgenID;
- for (int i=0; i<numberOfEdges; i++)
- {
- 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;
- }
+ // find internal shapes
+ NETGENPlugin_Internals internals( aMesh, aShape, /*is3D=*/true );
- vector<SMESH_subMesh*> meshVertices;
- for (TopExp_Explorer exp(aShape,TopAbs_VERTEX);exp.More();exp.Next())
- {
- 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);
- }
+ // ---------------------------------
+ // Feed the Netgen with surface mesh
+ // ---------------------------------
- int numberOfVertices = meshVertices.size();
+ TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
+ bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
- int NbTotOfNodesVertices = 0;
+ StdMeshers_QuadToTriaAdaptor Adaptor;
+ if ( aMesh.NbQuadrangles() > 0 )
+ Adaptor.Compute(aMesh,aShape);
- 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 = SMESH_Algo::IsReversedSubMesh( TopoDS::Face(aShapeFace), meshDS );
+
+ const SMESHDS_SubMesh * aSubMeshDSFace = meshDS->MeshElements( aShapeFace );
+ if ( !aSubMeshDSFace ) continue;
+ SMDS_ElemIteratorPtr 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");
+ vector< const SMDS_MeshElement* > trias;
+ bool isTraingle = ( elem->NbNodes() == ( elem->IsQuadratic() ? 6 : 3 ));
+ if ( !isTraingle )
+ {
+ // use adaptor to convert quadrangle face into triangles
+ const list<const SMDS_FaceOfNodes*>* faces = Adaptor.GetTriangles(elem);
+ if(faces==0)
+ return error( COMPERR_BAD_INPUT_MESH,
+ SMESH_Comment("No triangles in adaptor for element ")<<elem->GetID());
+ trias.assign( faces->begin(), faces->end() );
+ }
+ else
+ {
+ trias.push_back( elem );
+ }
+ // Add nodes of triangles and triangles them-selves to netgen mesh
+
+ for ( int i = 0; i < trias.size(); ++i )
+ {
+ // add three nodes of triangle
+ bool hasDegen = false;
+ for ( int iN = 0; iN < 3; ++iN )
+ {
+ const SMDS_MeshNode* node = trias[i]->GetNode( iN );
+ int shapeID = node->GetPosition()->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 && isTraingle )
+ {
+ 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 );
+ }
+#endif
+ } // 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);
+ Netgen_NbOfNodes = Ng_GetNP(Netgen_mesh);
}
+ }
- 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];
+ // -------------------------
+ // Generate the volume mesh
+ // -------------------------
- for (int i=0; i<Netgen_NbOfNodes; i++) nodesUsed[i] = 0;
+ Ng_Meshing_Parameters Netgen_param;
- for (int i=0; i<Netgen_NbOfTria; i++)
- for (int j=0; j<nbNodesByTri; j++)
- {
- int Nij = Netgen_Connectivity[i*nbNodesByTri+j];
+ Netgen_param.secondorder = Netgen_param2ndOrder;
+ Netgen_param.fineness = Netgen_paramFine;
+ Netgen_param.maxh = Netgen_paramSize;
- ASSERT((Nij>=1) && (Nij<=Netgen_NbOfNodes));
+ Ng_Result status;
- nodesUsed[Nij-1] = 1;
- Netgen_Connectivity[i*nbNodesByTri+j] = Nij;
- }
+ 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("Exception in Ng_GenerateVolumeMesh()");
+ status = NG_VOLUME_FAILURE;
+ }
+ 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");
+ };
+ }
- for (int i=0; i<Netgen_NbOfNodes; i++)
- {
- ASSERT(nodesUsed[i] != 0);
- }
-
- delete [] nodesUsed;
+ int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
+ int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
- /*
- Feed the Netgen surface mesh
- */
- Ng_Mesh * Netgen_mesh;
-
- Ng_Init();
-
- Netgen_mesh = Ng_NewMesh();
-
- Ng_Meshing_Parameters Netgen_param;
-
- for (int i=0; i<Netgen_NbOfNodes; i++)
- {
- for (int j=0; j<spaceDimension; j++)
- Netgen_point[j] = Netgen_Coordinates[i*spaceDimension+j];
+ MESSAGE("End of Volume Mesh Generation. status=" << status <<
+ ", nb new nodes: " << Netgen_NbOfNodesNew - Netgen_NbOfNodes <<
+ ", nb tetra: " << Netgen_NbOfTetra);
- Ng_AddPoint(Netgen_mesh, Netgen_point);
- }
-
- for (int i=0; i<Netgen_NbOfTria; i++)
- {
- for (int j=0; j<nbNodesByTri; j++)
- Netgen_triangle[j] = Netgen_Connectivity[i*nbNodesByTri+j];
+ // -------------------------------------------------------------------
+ // Feed back the SMESHDS with the generated Nodes and Volume Elements
+ // -------------------------------------------------------------------
- Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
- }
+ if ( status == NG_VOLUME_FAILURE )
+ {
+ SMESH_ComputeErrorPtr err = NETGENPlugin_Mesher::readErrors(nodeVec);
+ if ( err && !err->myBadElements.empty() )
+ error( err );
+ }
- Netgen_param.secondorder = Netgen_param2ndOrder;
- Netgen_param.fineness = Netgen_paramFine;
- Netgen_param.maxh = Netgen_paramSize;
+ bool isOK = ( /*status == NG_OK &&*/ Netgen_NbOfTetra > 0 );// get whatever built
+ if ( isOK )
+ {
+ // 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]);
+ }
- /*
- Generate the volume mesh
- */
+ // create tetrahedrons
+ for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
+ {
+ Ng_GetVolumeElement(Netgen_mesh, elemIndex, Netgen_tetrahedron);
+ helper.AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
+ nodeVec.at( Netgen_tetrahedron[1] ),
+ nodeVec.at( Netgen_tetrahedron[2] ),
+ nodeVec.at( Netgen_tetrahedron[3] ));
+ }
+ }
- ASSERT(Netgen_NbOfNodes == Ng_GetNP(Netgen_mesh));
- ASSERT(Ng_GetNE(Netgen_mesh) == 0);
- ASSERT(Netgen_NbOfTria == Ng_GetNSE(Netgen_mesh));
+ return (status == NG_OK);
+}
- Ng_Result status;
+//================================================================================
+/*!
+ * \brief Compute tetrahedral mesh from 2D mesh without geometry
+ */
+//================================================================================
- try {
- status = Ng_GenerateVolumeMesh(Netgen_mesh, &Netgen_param);
- } catch (...) {
- MESSAGE("An exception has been caught during the Volume Mesh Generation ...");
- status = NG_VOLUME_FAILURE;
+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, TIDCompare > TNodeToIDMap;
+ TNodeToIDMap nodeToNetgenID;
+ list< const SMDS_MeshElement* > triangles;
+ SMESHDS_Mesh* MeshDS = aHelper->GetMeshDS();
+
+ 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;
+
+ StdMeshers_QuadToTriaAdaptor Adaptor;
+ Adaptor.Compute(aMesh);
+
+ SMDS_FaceIteratorPtr fIt = MeshDS->facesIterator();
+ TIDSortedElemSet sortedFaces; // 0020279: control the "random" use when using mesh algorithms
+ while( fIt->more()) sortedFaces.insert( fIt->next() );
+
+ TIDSortedElemSet::iterator itFace = sortedFaces.begin(), fEnd = sortedFaces.end();
+ for ( ; itFace != fEnd; ++itFace )
+ {
+ // check element
+ const SMDS_MeshElement* elem = *itFace;
+ if ( !elem )
+ return error( COMPERR_BAD_INPUT_MESH, "Null element encounters");
+
+ vector< const SMDS_MeshElement* > trias;
+ bool isTraingle = ( elem->NbNodes() == ( elem->IsQuadratic() ? 6 : 3 ));
+ if ( !isTraingle ) {
+ // using adaptor
+ const list<const SMDS_FaceOfNodes*>* faces = Adaptor.GetTriangles(elem);
+ if(faces==0)
+ continue; // Issue 0020682. There already can be 3d mesh
+ trias.assign( faces->begin(), faces->end() );
+ }
+ else {
+ trias.push_back( elem );
+ }
+ for ( int i = 0; i < trias.size(); ++i )
+ {
+ triangles.push_back( trias[i] );
+ for ( int iN = 0; iN < 3; ++iN )
+ {
+ const SMDS_MeshNode* node = trias[i]->GetNode( iN );
+ // put elem nodes to nodeToNetgenID map
+ nodeToNetgenID.insert( make_pair( node, invalid_ID ));
}
+ }
+ }
- 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];
- }
-
- 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])
-
- for (int i=0; i<Netgen_NbOfTetra; i++)
- {
- Ng_GetVolumeElement(Netgen_mesh, (i+1), Netgen_tetrahedron);
-
- for (int j=0; j<nbNodesByTetra; j++)
- Netgen_ConnectivityNew[i*nbNodesByTetra+j] = Netgen_tetrahedron[j];
- }
-
- /*
- Feed back the SMESHDS with the generated Nodes and Volume Elements
- */
-
- int NbTotOfNodesShell = Netgen_NbOfNodesNew - Netgen_NbOfNodes;
-
- int * listNodeShellCoresNetgenSmesh = new int [NbTotOfNodesShell];
-
- for (int i=0; i<NbTotOfNodesShell; i++)
- listNodeShellCoresNetgenSmesh[i] = 0;
-
- for (int i=0; i<NbTotOfNodesShell; i++)
- {
- int index = (i+Netgen_NbOfNodes)*spaceDimension;
-
- SMDS_MeshNode * node =
- meshDS->AddNode(Netgen_CoordinatesNew[index],
- Netgen_CoordinatesNew[index+1],
- Netgen_CoordinatesNew[index+2]);
-
- meshDS->SetNodeInVolume(node, aShell);
+ // ---------------------------------
+ // 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;
+
+ // set nodes and remember thier netgen IDs
+
+ TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
+ for ( ; n_id != nodeToNetgenID.end(); ++n_id )
+ {
+ const SMDS_MeshNode* node = n_id->first;
- index = i+Netgen_NbOfNodes;
- netgenToDS[index] = node;
+ 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
+ }
- listNodeShellCoresNetgenSmesh[i] = node->GetID();
- }
+ // set triangles
+ list< const SMDS_MeshElement* >::iterator tria = triangles.begin();
+ for ( ; tria != triangles.end(); ++tria)
+ {
+ 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;
+ }
+ Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
+ }
- for (int i=0; i<NbTotOfNodesShell; i++)
- {
- ASSERT(listNodeShellCoresNetgenSmesh[i] != 0);
+ // -------------------------
+ // Generate the volume mesh
+ // -------------------------
- for (int j=0; j<NbTotOfNodesShell && j!=i; j++)
- ASSERT(listNodeShellCoresNetgenSmesh[i] != listNodeShellCoresNetgenSmesh[j]);
- }
+ Ng_Meshing_Parameters Netgen_param;
- 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];
+ Netgen_param.secondorder = Netgen_param2ndOrder;
+ Netgen_param.fineness = Netgen_paramFine;
+ Netgen_param.maxh = Netgen_paramSize;
- 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];
+ Ng_Result status;
- index = tetraNode1;
- if (index <= Netgen_NbOfNodes)
- tetraNode1 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode1 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
+ 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;
+ }
+ if ( GetComputeError()->IsOK() ) {
+ error( status, "Bad mesh input!!!");
+ }
- index = tetraNode2;
- if (index <= Netgen_NbOfNodes)
- tetraNode2 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode2 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
+ int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
- index = tetraNode3;
- if (index <= Netgen_NbOfNodes)
- tetraNode3 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode3 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
+ int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
- index = tetraNode4;
- if (index <= Netgen_NbOfNodes)
- tetraNode4 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode4 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
+ MESSAGE("End of Volume Mesh Generation. status=" << status <<
+ ", nb new nodes: " << Netgen_NbOfNodesNew - Netgen_NbOfNodes <<
+ ", nb tetra: " << Netgen_NbOfTetra);
- SMDS_MeshVolume * elt =
- meshDS->AddVolume(node1,node2,node3,node4);
+ // -------------------------------------------------------------------
+ // Feed back the SMESHDS with the generated Nodes and Volume Elements
+ // -------------------------------------------------------------------
- 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;
+ 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;
}
- return false;
-}
-
-
-//=============================================================================
-/*!
- *
- */
-//=============================================================================
+ // 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] ));
+ }
+ }
-ostream & NETGENPlugin_NETGEN_3D::SaveTo(ostream & save)
-{
- return save;
+ return (status == NG_OK);
}
-//=============================================================================
-/*!
- *
- */
-//=============================================================================
-
-istream & NETGENPlugin_NETGEN_3D::LoadFrom(istream & load)
-{
- return load;
-}
//=============================================================================
/*!
- *
+ *
*/
//=============================================================================
-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 );
-}
-
-//=============================================================================
-/*!
- *
- */
-//=============================================================================
+ 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;
+ }
-istream & operator >> (istream & load, NETGENPlugin_NETGEN_3D & hyp)
-{
- return hyp.LoadFrom( load );
+ // 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;
+ }
+ }
+ 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 true;
}
