using namespace std;
#include "NETGENPlugin_NETGEN_3D.hxx"
+
#include "SMESH_Gen.hxx"
#include "SMESH_Mesh.hxx"
-#include "SMESH_subMesh.hxx"
-
+#include "SMESH_ControlsDef.hxx"
+#include "SMESHDS_Mesh.hxx"
#include "SMDS_MeshElement.hxx"
#include "SMDS_MeshNode.hxx"
-#include "SMDS_FacePosition.hxx"
#include <TopExp.hxx>
-#include <TopTools_IndexedDataMapOfShapeListOfShape.hxx>
-#include <TopTools_ListOfShape.hxx>
-#include <TopTools_ListIteratorOfListOfShape.hxx>
-#include <TColStd_ListIteratorOfListOfInteger.hxx>
-
-#include <BRep_Tool.hxx>
-#include <Geom_Surface.hxx>
-#include <Geom_Curve.hxx>
-#include <Geom2d_Curve.hxx>
#include "utilities.h"
+#include <list>
+#include <vector>
+#include <map>
+
/*
Netgen include files
*/
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;
+ // get a shell from aShape
+ TopoDS_Shell aShell;
+ TopExp_Explorer exp(aShape,TopAbs_SHELL);
+ if ( exp.More() )
+ aShell = TopoDS::Shell(exp.Current());
- // check if all faces were meshed by a triangle mesher (here MESFISTO_2D)
+ if ( aShell.IsNull() || !aMesh.GetSubMesh( aShell )) {
+ INFOS( "NETGENPlugin_NETGEN_3D::Compute(), bad shape");
+ return false;
+ }
+ // -------------------------------------------------------------------
+ // get triangles on aShell and make a map of nodes to Netgen node IDs
+ // -------------------------------------------------------------------
- vector<SMESH_subMesh*> meshFaces;
- vector<TopoDS_Shape> shapeFaces;
+ 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;
for (TopExp_Explorer exp(aShape,TopAbs_FACE);exp.More();exp.Next())
+ {
+ TopoDS_Shape aShapeFace = exp.Current();
+ int faceID = meshDS->ShapeToIndex( aShapeFace );
+ TopoDS_Shape aMeshedFace = meshDS->IndexToShape( faceID );
+ const SMESHDS_SubMesh * aSubMeshDSFace = meshDS->MeshElements( faceID );
+ if ( aSubMeshDSFace )
{
- 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);
+ bool isRev = ( aShapeFace.Orientation() != aMeshedFace.Orientation() );
+ SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
+ while ( iteratorElem->more() ) // loop on elements on a face
+ {
+ // check element
+ const SMDS_MeshElement* elem = iteratorElem->next();
+ if ( !elem || elem->NbNodes() != 3 ) {
+ INFOS( "NETGENPlugin_NETGEN_3D::Compute(), bad mesh");
+ return false;
+ }
+ // 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());
+ nodeToNetgenID.insert( make_pair( node, 0 ));
+ }
+#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
+ }
}
+ }
+ // ---------------------------------
+ // Feed the Netgen with surface mesh
+ // ---------------------------------
- int numberOfFaces = meshFaces.size();
+ int Netgen_NbOfNodes = nodeToNetgenID.size();
+ int Netgen_param2ndOrder = 0;
+ double Netgen_paramFine = 1.;
+ double Netgen_paramSize = _maxElementVolume;
- int NbTotOfTria = 0;
- int NbTotOfNodesFaces = 0;
+ double Netgen_point[3];
+ int Netgen_triangle[3];
+ int Netgen_tetrahedron[4];
- 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");
+ Ng_Init();
- }
-
- // check if all edges were meshed by a edge mesher (here Regular_1D)
+ Ng_Mesh * Netgen_mesh = Ng_NewMesh();
- 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);
+ // set nodes and remember thier netgen IDs
+ TNodeToIDMap::iterator n_id = nodeToNetgenID.begin();
+ for ( int id = 0; n_id != nodeToNetgenID.end(); ++n_id )
+ {
+ const SMDS_MeshNode* node = n_id->first;
+ Netgen_point [ 0 ] = node->X();
+ Netgen_point [ 1 ] = node->Y();
+ Netgen_point [ 2 ] = node->Z();
+ n_id->second = ++id;
+ Ng_AddPoint(Netgen_mesh, Netgen_point);
+ }
+ // set triangles
+ list< const SMDS_MeshElement* >::iterator tria = triangles.begin();
+ list< bool >::iterator reverse = isReversed.begin();
+ for ( ; tria != triangles.end(); ++tria, ++reverse )
+ {
+ int i = 0;
+ SMDS_ElemIteratorPtr triangleNodesIt = (*tria)->nodesIterator();
+ while ( triangleNodesIt->more() ) {
+ const SMDS_MeshNode * node =
+ static_cast<const SMDS_MeshNode *>(triangleNodesIt->next());
+ Netgen_triangle[ *reverse ? 2 - i : i ] = nodeToNetgenID[ node ];
+ ++i;
}
+ Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
+ }
- int numberOfEdges = meshEdges.size();
-
- int NbTotOfNodesEdges = 0;
- int NbTotOfSegs = 0;
+ // -------------------------
+ // Generate the volume mesh
+ // -------------------------
- 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;
- }
+ Ng_Meshing_Parameters Netgen_param;
- 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);
- }
+ Netgen_param.secondorder = Netgen_param2ndOrder;
+ Netgen_param.fineness = Netgen_paramFine;
+ Netgen_param.maxh = Netgen_paramSize;
- int numberOfVertices = meshVertices.size();
+ Ng_Result status;
- int NbTotOfNodesVertices = 0;
+ try {
+ status = Ng_GenerateVolumeMesh(Netgen_mesh, &Netgen_param);
+ } catch (...) {
+ MESSAGE("An exception has been caught during the Volume Mesh Generation ...");
+ status = NG_VOLUME_FAILURE;
+ }
- for (int i=0; i<numberOfVertices; i++)
- {
- TopoDS_Shape aShapeVertex = meshVertices[i]->GetSubShape();
+ int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
- const SMESHDS_SubMesh * aSubMeshDSVertex = meshVertices[i]->GetSubMeshDS();
+ int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
- int nbNodes = aSubMeshDSVertex->NbNodes();
- NbTotOfNodesVertices += nbNodes;
- }
+ MESSAGE("End of Volume Mesh Generation. status=" << status <<
+ ", nb new nodes: " << Netgen_NbOfNodesNew - Netgen_NbOfNodes <<
+ ", nb tetra: " << Netgen_NbOfTetra);
- vector<SMESH_subMesh*> meshShells;
- TopoDS_Shell aShell;
+ // -------------------------------------------------------------------
+ // Feed back the SMESHDS with the generated Nodes and Volume Elements
+ // -------------------------------------------------------------------
- for (TopExp_Explorer exp(aShape,TopAbs_SHELL);exp.More();exp.Next())
+ bool isOK = ( status == NG_OK && Netgen_NbOfTetra > 0 );
+ 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[ n_id->second ] = n_id->first;
+ // create and insert new nodes into nodeVec
+ int nodeIndex = Netgen_NbOfNodes;
+ for ( ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
{
- SMESH_subMesh* aSubMesh = aMesh.GetSubMesh(exp.Current());
- ASSERT(aSubMesh);
- aShell = TopoDS::Shell(exp.Current());
- meshShells.push_back(aSubMesh);
+ Ng_GetPoint( Netgen_mesh, nodeIndex, Netgen_point );
+ SMDS_MeshNode * node = meshDS->AddNode(Netgen_point[0],
+ Netgen_point[1],
+ Netgen_point[2]);
+ meshDS->SetNodeInVolume(node, aShell);
+ nodeVec[nodeIndex] = node;
}
- int numberOfShells = meshShells.size();
-
- if (numberOfShells > 0)
+ // create tetrahedrons
+ for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
{
- /*
- 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;
-
- for (int i=0; i<Netgen_NbOfNodes; i++)
- {
- for (int j=0; j<spaceDimension; j++)
- Netgen_point[j] = Netgen_Coordinates[i*spaceDimension+j];
-
- 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];
-
- Ng_AddSurfaceElement(Netgen_mesh, NG_TRIG, Netgen_triangle);
- }
-
- Netgen_param.secondorder = Netgen_param2ndOrder;
- Netgen_param.fineness = Netgen_paramFine;
- Netgen_param.maxh = Netgen_paramSize;
-
- /*
- Generate the volume mesh
- */
-
- ASSERT(Netgen_NbOfNodes == Ng_GetNP(Netgen_mesh));
- ASSERT(Ng_GetNE(Netgen_mesh) == 0);
- ASSERT(Netgen_NbOfTria == Ng_GetNSE(Netgen_mesh));
-
- Ng_Result status;
-
- try {
- status = Ng_GenerateVolumeMesh(Netgen_mesh, &Netgen_param);
- } catch (...) {
- MESSAGE("An exception has been caught during the Volume Mesh Generation ...");
- status = NG_VOLUME_FAILURE;
- }
-
- 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);
-
- index = i+Netgen_NbOfNodes;
- netgenToDS[index] = node;
-
- listNodeShellCoresNetgenSmesh[i] = node->GetID();
- }
-
- for (int i=0; i<NbTotOfNodesShell; i++)
- {
- ASSERT(listNodeShellCoresNetgenSmesh[i] != 0);
-
- for (int j=0; j<NbTotOfNodesShell && j!=i; j++)
- ASSERT(listNodeShellCoresNetgenSmesh[i] != listNodeShellCoresNetgenSmesh[j]);
- }
-
- 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];
-
- 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];
-
- index = tetraNode1;
- if (index <= Netgen_NbOfNodes)
- tetraNode1 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode1 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
-
- index = tetraNode2;
- if (index <= Netgen_NbOfNodes)
- tetraNode2 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode2 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
-
- index = tetraNode3;
- if (index <= Netgen_NbOfNodes)
- tetraNode3 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode3 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
-
- index = tetraNode4;
- if (index <= Netgen_NbOfNodes)
- tetraNode4 = listNodeCoresNetgenSmesh[index-1];
- else
- tetraNode4 = listNodeShellCoresNetgenSmesh[index-Netgen_NbOfNodes-1];
-
- SMDS_MeshVolume * elt =
- meshDS->AddVolume(node1,node2,node3,node4);
-
- 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;
+ Ng_GetVolumeElement(Netgen_mesh, elemIndex, Netgen_tetrahedron);
+ SMDS_MeshVolume * elt = meshDS->AddVolume (nodeVec[ Netgen_tetrahedron[0] ],
+ nodeVec[ Netgen_tetrahedron[1] ],
+ nodeVec[ Netgen_tetrahedron[2] ],
+ nodeVec[ Netgen_tetrahedron[3] ]);
+ meshDS->SetMeshElementOnShape(elt, aShell);
}
+ }
- return false;
-}
+ Ng_DeleteMesh(Netgen_mesh);
+ Ng_Exit();
+ return isOK;
+}
//=============================================================================
/*!
