bool NETGENPlugin_Mesher::fillNgMesh(netgen::OCCGeometry& occgeom,
netgen::Mesh& ngMesh,
vector<SMDS_MeshNode*>& nodeVec,
const list< SMESH_subMesh* > & meshedSM)
{
TNode2IdMap nodeNgIdMap;
TopTools_MapOfShape visitedShapes;
SMESH_MesherHelper helper (*_mesh);
int faceID = occgeom.fmap.Extent();
_faceDescriptors.clear();
list< SMESH_subMesh* >::const_iterator smIt, smEnd = meshedSM.end();
for ( smIt = meshedSM.begin(); smIt != smEnd; ++smIt )
{
SMESH_subMesh* sm = *smIt;
if ( !visitedShapes.Add( sm->GetSubShape() ))
continue;
SMESHDS_SubMesh * smDS = sm->GetSubMeshDS();
switch ( sm->GetSubShape().ShapeType() )
{
case TopAbs_EDGE: { // EDGE
// ----------------------
const TopoDS_Edge& geomEdge = TopoDS::Edge( sm->GetSubShape() );
// Add ng segments for each not meshed face the edge bounds
TopTools_MapOfShape visitedAncestors;
const TopTools_ListOfShape& ancestors = _mesh->GetAncestors( geomEdge );
TopTools_ListIteratorOfListOfShape ancestorIt ( ancestors );
for ( ; ancestorIt.More(); ancestorIt.Next() )
{
const TopoDS_Shape & ans = ancestorIt.Value();
if ( ans.ShapeType() != TopAbs_FACE || !visitedAncestors.Add( ans ))
continue;
const TopoDS_Face& face = TopoDS::Face( ans );
int faceID = occgeom.fmap.FindIndex( face );
if ( faceID < 1 )
continue; // meshed face
// find out orientation of geomEdge within face
bool isForwad = false;
for ( TopExp_Explorer exp( face, TopAbs_EDGE ); exp.More(); exp.Next() ) {
if ( geomEdge.IsSame( exp.Current() )) {
isForwad = ( exp.Current().Orientation() == geomEdge.Orientation() );
break;
}
}
bool isQuad = smDS->GetElements()->next()->IsQuadratic();
// get all nodes from geomEdge
StdMeshers_FaceSide fSide( face, geomEdge, _mesh, isForwad, isQuad );
const vector<UVPtStruct>& points = fSide.GetUVPtStruct();
int i, nbSeg = fSide.NbSegments();
double otherSeamParam = 0;
helper.SetSubShape( face );
bool isSeam = helper.IsRealSeam( geomEdge );
if ( isSeam )
otherSeamParam =
helper.GetOtherParam( helper.GetPeriodicIndex() == 1 ? points[0].u : points[0].v );
// add segments
int prevNgId = ngNodeId( points[0].node, ngMesh, nodeNgIdMap );
for ( i = 0; i < nbSeg; ++i )
{
const UVPtStruct& p1 = points[ i ];
const UVPtStruct& p2 = points[ i+1 ];
netgen::Segment seg;
// ng node ids
seg.p1 = prevNgId;
seg.p2 = prevNgId = ngNodeId( p2.node, ngMesh, nodeNgIdMap );
// node param on curve
seg.epgeominfo[ 0 ].dist = p1.param;
seg.epgeominfo[ 1 ].dist = p2.param;
// uv on face
seg.epgeominfo[ 0 ].u = p1.u;
seg.epgeominfo[ 0 ].v = p1.v;
seg.epgeominfo[ 1 ].u = p2.u;
seg.epgeominfo[ 1 ].v = p2.v;
//seg.epgeominfo[ iEnd ].edgenr = edgeID; // = geom.emap.FindIndex(edge);
seg.si = faceID; // = geom.fmap.FindIndex (face);
seg.edgenr = ngMesh.GetNSeg() + 1; // segment id
ngMesh.AddSegment (seg);
if ( isSeam )
{
if ( helper.GetPeriodicIndex() == 1 ) {
seg.epgeominfo[ 0 ].u = otherSeamParam;
seg.epgeominfo[ 1 ].u = otherSeamParam;
swap (seg.epgeominfo[0].v, seg.epgeominfo[1].v);
} else {
seg.epgeominfo[ 0 ].v = otherSeamParam;
seg.epgeominfo[ 1 ].v = otherSeamParam;
swap (seg.epgeominfo[0].u, seg.epgeominfo[1].u);
}
swap (seg.p1, seg.p2);
swap (seg.epgeominfo[0].dist, seg.epgeominfo[1].dist);
seg.edgenr = ngMesh.GetNSeg() + 1; // segment id
ngMesh.AddSegment (seg);
}
}
} // loop on geomEdge ancestors
break;
} // case TopAbs_EDGE
case TopAbs_FACE: { // FACE
// ----------------------
const TopoDS_Face& geomFace = TopoDS::Face( sm->GetSubShape() );
helper.SetSubShape( geomFace );
// Find solids the geomFace bounds
int solidID1 = 0, solidID2 = 0;
const TopTools_ListOfShape& ancestors = _mesh->GetAncestors( geomFace );
TopTools_ListIteratorOfListOfShape ancestorIt ( ancestors );
for ( ; ancestorIt.More(); ancestorIt.Next() )
{
const TopoDS_Shape & solid = ancestorIt.Value();
if ( solid.ShapeType() == TopAbs_SOLID ) {
int id = occgeom.somap.FindIndex ( solid );
if ( solidID1 && id != solidID1 ) solidID2 = id;
else solidID1 = id;
}
}
faceID++;
_faceDescriptors[ faceID ].first = solidID1;
_faceDescriptors[ faceID ].second = solidID2;
// Orient the face correctly in solidID1 (issue 0020206)
bool reverse = false;
if ( solidID1 ) {
TopoDS_Shape solid = occgeom.somap( solidID1 );
for ( TopExp_Explorer f( solid, TopAbs_FACE ); f.More(); f.Next() ) {
if ( geomFace.IsSame( f.Current() )) {
reverse = SMESH_Algo::IsReversedSubMesh( TopoDS::Face( f.Current()), helper.GetMeshDS() );
break;
}
}
}
// Add surface elements
SMDS_ElemIteratorPtr faces = smDS->GetElements();
while ( faces->more() ) {
const SMDS_MeshElement* f = faces->next();
if ( f->NbNodes() % 3 != 0 ) { // not triangle
for ( ancestorIt.Initialize(ancestors); ancestorIt.More(); ancestorIt.Next() )
if ( ancestorIt.Value().ShapeType() == TopAbs_SOLID ) {
sm = _mesh->GetSubMesh( ancestorIt.Value() );
break;
}
SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
smError.reset( new SMESH_ComputeError(COMPERR_BAD_INPUT_MESH,"Not triangle submesh"));
smError->myBadElements.push_back( f );
return false;
}
netgen::Element2d tri(3);
tri.SetIndex ( faceID );
for ( int i = 0; i < 3; ++i ) {
const SMDS_MeshNode* node = f->GetNode( i ), * inFaceNode=0;
if ( helper.IsSeamShape( node->GetPosition()->GetShapeId() ))
if ( helper.IsSeamShape( f->GetNodeWrap( i+1 )->GetPosition()->GetShapeId() ))
inFaceNode = f->GetNodeWrap( i-1 );
else
inFaceNode = f->GetNodeWrap( i+1 );
gp_XY uv = helper.GetNodeUV( geomFace, node, inFaceNode );
if ( reverse ) {
tri.GeomInfoPi(3-i).u = uv.X();
tri.GeomInfoPi(3-i).v = uv.Y();
tri.PNum (3-i) = ngNodeId( node, ngMesh, nodeNgIdMap );
} else {
tri.GeomInfoPi(i+1).u = uv.X();
tri.GeomInfoPi(i+1).v = uv.Y();
tri.PNum (i+1) = ngNodeId( node, ngMesh, nodeNgIdMap );
}
}
ngMesh.AddSurfaceElement (tri);
}
break;
} //
case TopAbs_VERTEX: { // VERTEX
// --------------------------
SMDS_NodeIteratorPtr nodeIt = smDS->GetNodes();
if ( nodeIt->more() )
ngNodeId( nodeIt->next(), ngMesh, nodeNgIdMap );
break;
}
default:;
} // switch
} // loop on submeshes
// fill nodeVec
nodeVec.resize( ngMesh.GetNP() + 1 );
TNode2IdMap::iterator node_NgId, nodeNgIdEnd = nodeNgIdMap.end();
for ( node_NgId = nodeNgIdMap.begin(); node_NgId != nodeNgIdEnd; ++node_NgId)
nodeVec[ node_NgId->second ] = (SMDS_MeshNode*) node_NgId->first;
return true;
}
bool NETGENPlugin_NETGEN_3D::Compute(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape)
{
MESSAGE("NETGENPlugin_NETGEN_3D::Compute with maxElmentsize = " << _maxElementVolume);
SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
const int invalid_ID = -1;
SMESH::Controls::Area areaControl;
SMESH::Controls::TSequenceOfXYZ nodesCoords;
// -------------------------------------------------------------------
// get triangles on aShell and make a map of nodes to Netgen node IDs
// -------------------------------------------------------------------
SMESH_MesherHelper helper(aMesh);
SMESH_MesherHelper* myTool = &helper;
bool _quadraticMesh = myTool->IsQuadraticSubMesh(aShape);
typedef map< const SMDS_MeshNode*, int, TIDCompare > TNodeToIDMap;
TNodeToIDMap nodeToNetgenID;
list< const SMDS_MeshElement* > triangles;
list< bool > isReversed; // orientation of triangles
TopAbs_ShapeEnum mainType = aMesh.GetShapeToMesh().ShapeType();
bool checkReverse = ( mainType == TopAbs_COMPOUND || mainType == TopAbs_COMPSOLID );
// 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;
StdMeshers_QuadToTriaAdaptor Adaptor;
Adaptor.Compute(aMesh,aShape);
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 )
{
bool isRev = false;
if ( checkReverse && 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 );
SMDS_ElemIteratorPtr iteratorElem = aSubMeshDSFace->GetElements();
while ( iteratorElem->more() ) // loop on elements on a face
{
// check element
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
const list<const SMDS_FaceOfNodes*>* faces = Adaptor.GetTriangles(elem);
if(faces==0) {
return error( COMPERR_BAD_INPUT_MESH,
SMESH_Comment("Not triangles in adaptor for element ")<<elem->GetID());
}
list<const SMDS_FaceOfNodes*>::const_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 ));
}
}
}
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 ));
}
}
#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
}
// look for degeneraged edges and vetices
for (TopExp_Explorer expE(aShapeFace,TopAbs_EDGE); expE.More(); expE.Next())
{
TopoDS_Edge aShapeEdge = TopoDS::Edge( expE.Current() );
if ( BRep_Tool::Degenerated( aShapeEdge ))
{
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 ));
}
}
}
}
// ---------------------------------
// 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];
Ng_Init();
Ng_Mesh * Netgen_mesh = Ng_NewMesh();
// 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 )
{
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;
}
// 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());
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);
}
}
// -------------------------
// 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;
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");
};
}
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 = ( /*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;
}
// create and insert new nodes into nodeVec
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;
}
// 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 );
}
}
Ng_DeleteMesh(Netgen_mesh);
Ng_Exit();
NETGENPlugin_Mesher::RemoveTmpFiles();
return (status == NG_OK);
}
static TError AddSegmentsToMesh(netgen::Mesh& ngMesh,
OCCGeometry& geom,
const TSideVector& wires,
SMESH_MesherHelper& helper,
vector< const SMDS_MeshNode* > & nodeVec)
{
// ----------------------------
// Check wires and count nodes
// ----------------------------
int nbNodes = 0;
for ( int iW = 0; iW < wires.size(); ++iW )
{
StdMeshers_FaceSidePtr wire = wires[ iW ];
if ( wire->MissVertexNode() )
return TError
(new SMESH_ComputeError(COMPERR_BAD_INPUT_MESH, "Missing nodes on vertices"));
const vector<UVPtStruct>& uvPtVec = wire->GetUVPtStruct();
if ( uvPtVec.size() != wire->NbPoints() )
return TError
(new SMESH_ComputeError(COMPERR_BAD_INPUT_MESH,
SMESH_Comment("Unexpected nb of points on wire ") << iW
<< ": " << uvPtVec.size()<<" != "<<wire->NbPoints()));
nbNodes += wire->NbSegments();
}
nodeVec.reserve( nbNodes );
// -----------------
// Fill netgen mesh
// -----------------
// netgen::Box<3> bb = geom.GetBoundingBox();
// bb.Increase (bb.Diam()/10);
// ngMesh.SetLocalH (bb.PMin(), bb.PMax(), 0.5); // set grading
const int faceID = 1, solidID = 0;
ngMesh.AddFaceDescriptor (FaceDescriptor(faceID, solidID, solidID, 0));
for ( int iW = 0; iW < wires.size(); ++iW )
{
StdMeshers_FaceSidePtr wire = wires[ iW ];
const vector<UVPtStruct>& uvPtVec = wire->GetUVPtStruct();
int firstPointID = ngMesh.GetNP() + 1;
int edgeID = 1, posID = -2;
for ( int i = 0; i < wire->NbSegments(); ++i ) // loop on segments
{
// Add the first point of a segment
const SMDS_MeshNode * n = uvPtVec[ i ].node;
const int posShapeID = n->GetPosition()->GetShapeId();
// skip nodes on degenerated edges
if ( helper.IsDegenShape( posShapeID ) &&
helper.IsDegenShape( uvPtVec[ i+1 ].node->GetPosition()->GetShapeId() ))
continue;
nodeVec.push_back( n );
MeshPoint mp( Point<3> (n->X(), n->Y(), n->Z()) );
ngMesh.AddPoint ( mp, 1, EDGEPOINT );
// Add the segment
Segment seg;
seg.pnums[0] = ngMesh.GetNP(); // ng node id
seg.pnums[1] = seg.pnums[0] + 1; // ng node id
seg.edgenr = ngMesh.GetNSeg() + 1;// segment id
seg.si = faceID; // = geom.fmap.FindIndex (face);
for ( int iEnd = 0; iEnd < 2; ++iEnd)
{
const UVPtStruct& pnt = uvPtVec[ i + iEnd ];
seg.epgeominfo[ iEnd ].dist = pnt.param; // param on curve
seg.epgeominfo[ iEnd ].u = pnt.u;
seg.epgeominfo[ iEnd ].v = pnt.v;
// find out edge id and node parameter on edge
bool onVertex = ( pnt.node->GetPosition()->GetTypeOfPosition() == SMDS_TOP_VERTEX );
if ( onVertex || posShapeID != posID )
{
// get edge id
double normParam = pnt.normParam;
if ( onVertex )
normParam = 0.5 * ( uvPtVec[ i ].normParam + uvPtVec[ i+1 ].normParam );
const TopoDS_Edge& edge = wire->Edge( wire->EdgeIndex( normParam ));
edgeID = geom.emap.FindIndex( edge );
posID = posShapeID;
if ( onVertex ) // param on curve is different on each of two edges
seg.epgeominfo[ iEnd ].dist = helper.GetNodeU( edge, pnt.node );
}
seg.epgeominfo[ iEnd ].edgenr = edgeID; // = geom.emap.FindIndex(edge);
}
ngMesh.AddSegment (seg);
// cout << "Segment: " << seg.edgenr << endl
// << "\tp1: " << seg.p1 << endl
// << "\tp2: " << seg.p2 << endl
// << "\tp0 param: " << seg.epgeominfo[ 0 ].dist << endl
// << "\tp0 uv: " << seg.epgeominfo[ 0 ].u <<", "<< seg.epgeominfo[ 0 ].v << endl
// << "\tp0 edge: " << seg.epgeominfo[ 0 ].edgenr << endl
// << "\tp1 param: " << seg.epgeominfo[ 1 ].dist << endl
// << "\tp1 uv: " << seg.epgeominfo[ 1 ].u <<", "<< seg.epgeominfo[ 1 ].v << endl
// << "\tp1 edge: " << seg.epgeominfo[ 1 ].edgenr << endl;
}
Segment& seg = ngMesh.LineSegment( ngMesh.GetNSeg() );
seg.pnums[1] = firstPointID;
}
ngMesh.CalcSurfacesOfNode();
return TError();
}
bool NETGENPlugin_NETGEN_3D::compute(SMESH_Mesh& aMesh,
SMESH_MesherHelper& helper,
vector< const SMDS_MeshNode* >& nodeVec,
Ng_Mesh * Netgen_mesh)
{
netgen::multithread.terminate = 0;
netgen::Mesh* ngMesh = (netgen::Mesh*)Netgen_mesh;
int Netgen_NbOfNodes = Ng_GetNP(Netgen_mesh);
#if NETGEN_VERSION < 5
char *optstr = 0;
#endif
int startWith = netgen::MESHCONST_MESHVOLUME;
int endWith = netgen::MESHCONST_OPTVOLUME;
int err = 1;
NETGENPlugin_Mesher aMesher( &aMesh, helper.GetSubShape(), /*isVolume=*/true );
netgen::OCCGeometry occgeo;
if ( _hypParameters )
{
aMesher.SetParameters( _hypParameters );
if ( !_hypParameters->GetOptimize() )
endWith = netgen::MESHCONST_MESHVOLUME;
}
else if ( _hypMaxElementVolume )
{
netgen::mparam.maxh = pow( 72, 1/6. ) * pow( _maxElementVolume, 1/3. );
// limitVolumeSize( ngMesh, netgen::mparam.maxh ); // result is unpredictable
}
else if ( aMesh.HasShapeToMesh() )
{
aMesher.PrepareOCCgeometry( occgeo, helper.GetSubShape(), aMesh );
netgen::mparam.maxh = occgeo.GetBoundingBox().Diam()/2;
}
else
{
netgen::Point3d pmin, pmax;
ngMesh->GetBox (pmin, pmax);
netgen::mparam.maxh = Dist(pmin, pmax)/2;
}
if ( !_hypParameters && aMesh.HasShapeToMesh() )
{
netgen::mparam.minh = aMesher.GetDefaultMinSize( helper.GetSubShape(), netgen::mparam.maxh );
}
try
{
OCC_CATCH_SIGNALS;
#if NETGEN_VERSION > 4
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& ex)
{
SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
str << " at " << netgen::multithread.task
<< ": " << ex.DynamicType()->Name();
if ( ex.GetMessageString() && strlen( ex.GetMessageString() ))
str << ": " << ex.GetMessageString();
error(str);
}
catch (netgen::NgException exc)
{
SMESH_Comment str("NgException");
if ( strlen( netgen::multithread.task ) > 0 )
str << " at " << netgen::multithread.task;
str << ": " << exc.What();
error(str);
}
catch (...)
{
SMESH_Comment str("Exception in netgen::OCCGenerateMesh()");
if ( strlen( netgen::multithread.task ) > 0 )
str << " at " << netgen::multithread.task;
error(str);
}
int Netgen_NbOfNodesNew = Ng_GetNP(Netgen_mesh);
int Netgen_NbOfTetra = Ng_GetNE(Netgen_mesh);
MESSAGE("End of Volume Mesh Generation. err=" << err <<
", nb new nodes: " << Netgen_NbOfNodesNew - Netgen_NbOfNodes <<
", nb tetra: " << Netgen_NbOfTetra);
// -------------------------------------------------------------------
// Feed back the SMESHDS with the generated Nodes and Volume Elements
// -------------------------------------------------------------------
if ( err )
{
SMESH_ComputeErrorPtr ce = NETGENPlugin_Mesher::ReadErrors(nodeVec);
if ( ce && !ce->myBadElements.empty() )
error( ce );
}
bool isOK = ( /*status == NG_OK &&*/ Netgen_NbOfTetra > 0 );// get whatever built
if ( isOK )
{
double Netgen_point[3];
int Netgen_tetrahedron[4];
// create and insert new nodes into nodeVec
nodeVec.resize( Netgen_NbOfNodesNew + 1, 0 );
int nodeIndex = Netgen_NbOfNodes + 1;
for ( ; nodeIndex <= Netgen_NbOfNodesNew; ++nodeIndex )
{
Ng_GetPoint( Netgen_mesh, nodeIndex, Netgen_point );
nodeVec.at(nodeIndex) = helper.AddNode(Netgen_point[0], Netgen_point[1], Netgen_point[2]);
}
// create tetrahedrons
for ( int elemIndex = 1; elemIndex <= Netgen_NbOfTetra; ++elemIndex )
{
Ng_GetVolumeElement(Netgen_mesh, elemIndex, Netgen_tetrahedron);
try
{
helper.AddVolume (nodeVec.at( Netgen_tetrahedron[0] ),
nodeVec.at( Netgen_tetrahedron[1] ),
nodeVec.at( Netgen_tetrahedron[2] ),
nodeVec.at( Netgen_tetrahedron[3] ));
}
catch (...)
{
}
}
}
return !err;
}
bool StdMeshers_Hexa_3D::Compute(SMESH_Mesh & aMesh,
const TopoDS_Shape & aShape)// throw(SALOME_Exception)
{
// PAL14921. Enable catching std::bad_alloc and Standard_OutOfMemory outside
//Unexpect aCatch(SalomeException);
MESSAGE("StdMeshers_Hexa_3D::Compute");
SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
// 0. - shape and face mesh verification
// 0.1 - shape must be a solid (or a shell) with 6 faces
vector < SMESH_subMesh * >meshFaces;
for (TopExp_Explorer exp(aShape, TopAbs_FACE); exp.More(); exp.Next()) {
SMESH_subMesh *aSubMesh = aMesh.GetSubMeshContaining(exp.Current());
ASSERT(aSubMesh);
meshFaces.push_back(aSubMesh);
}
if (meshFaces.size() != 6) {
//return error(COMPERR_BAD_SHAPE, TComm(meshFaces.size())<<" instead of 6 faces in a block");
static StdMeshers_CompositeHexa_3D compositeHexa(-10, 0, aMesh.GetGen());
if ( !compositeHexa.Compute( aMesh, aShape ))
return error( compositeHexa.GetComputeError() );
return true;
}
// 0.2 - is each face meshed with Quadrangle_2D? (so, with a wire of 4 edges)
// tool for working with quadratic elements
SMESH_MesherHelper aTool (aMesh);
_quadraticMesh = aTool.IsQuadraticSubMesh(aShape);
// cube structure
typedef struct cubeStruct
{
TopoDS_Vertex V000;
TopoDS_Vertex V001;
TopoDS_Vertex V010;
TopoDS_Vertex V011;
TopoDS_Vertex V100;
TopoDS_Vertex V101;
TopoDS_Vertex V110;
TopoDS_Vertex V111;
faceQuadStruct* quad_X0;
faceQuadStruct* quad_X1;
faceQuadStruct* quad_Y0;
faceQuadStruct* quad_Y1;
faceQuadStruct* quad_Z0;
faceQuadStruct* quad_Z1;
Point3DStruct* np; // normalised 3D coordinates
} CubeStruct;
CubeStruct aCube;
// bounding faces
FaceQuadStruct* aQuads[6];
for (int i = 0; i < 6; i++)
aQuads[i] = 0;
for (int i = 0; i < 6; i++)
{
TopoDS_Shape aFace = meshFaces[i]->GetSubShape();
SMESH_Algo *algo = _gen->GetAlgo(aMesh, aFace);
string algoName = algo->GetName();
bool isAllQuad = false;
if (algoName == "Quadrangle_2D") {
SMESHDS_SubMesh * sm = meshDS->MeshElements( aFace );
if ( sm ) {
isAllQuad = true;
SMDS_ElemIteratorPtr eIt = sm->GetElements();
while ( isAllQuad && eIt->more() ) {
const SMDS_MeshElement* elem = eIt->next();
isAllQuad = ( elem->NbNodes()==4 ||(_quadraticMesh && elem->NbNodes()==8) );
}
}
}
if ( ! isAllQuad ) {
SMESH_ComputeErrorPtr err = ComputePentahedralMesh(aMesh, aShape);
return ClearAndReturn( aQuads, error(err));
}
StdMeshers_Quadrangle_2D *quadAlgo =
dynamic_cast < StdMeshers_Quadrangle_2D * >(algo);
ASSERT(quadAlgo);
try {
aQuads[i] = quadAlgo->CheckAnd2Dcompute(aMesh, aFace, _quadraticMesh);
if(!aQuads[i]) {
return error( quadAlgo->GetComputeError());
}
}
catch(SALOME_Exception & S_ex) {
return ClearAndReturn( aQuads, error(COMPERR_SLM_EXCEPTION,TComm(S_ex.what()) <<
" Raised by StdMeshers_Quadrangle_2D "
" on face #" << meshDS->ShapeToIndex( aFace )));
}
// 0.2.1 - number of points on the opposite edges must be the same
if (aQuads[i]->side[0]->NbPoints() != aQuads[i]->side[2]->NbPoints() ||
aQuads[i]->side[1]->NbPoints() != aQuads[i]->side[3]->NbPoints()
/*aQuads[i]->side[0]->NbEdges() != 1 ||
aQuads[i]->side[1]->NbEdges() != 1 ||
aQuads[i]->side[2]->NbEdges() != 1 ||
aQuads[i]->side[3]->NbEdges() != 1*/) {
MESSAGE("different number of points on the opposite edges of face " << i);
// Try to go into penta algorithm 'cause it has been improved.
SMESH_ComputeErrorPtr err = ComputePentahedralMesh(aMesh, aShape);
return ClearAndReturn( aQuads, error(err));
}
}
// 1. - identify faces and vertices of the "cube"
// 1.1 - ancestor maps vertex->edges in the cube
// TopTools_IndexedDataMapOfShapeListOfShape MS;
// TopExp::MapShapesAndAncestors(aShape, TopAbs_VERTEX, TopAbs_EDGE, MS);
// 1.2 - first face is choosen as face Y=0 of the unit cube
const TopoDS_Shape & aFace = meshFaces[0]->GetSubShape();
//const TopoDS_Face & F = TopoDS::Face(aFace);
// 1.3 - identify the 4 vertices of the face Y=0: V000, V100, V101, V001
aCube.V000 = aQuads[0]->side[0]->FirstVertex(); // will be (0,0,0) on the unit cube
aCube.V100 = aQuads[0]->side[0]->LastVertex(); // will be (1,0,0) on the unit cube
aCube.V001 = aQuads[0]->side[2]->FirstVertex(); // will be (0,0,1) on the unit cube
aCube.V101 = aQuads[0]->side[2]->LastVertex(); // will be (1,0,1) on the unit cube
TopTools_IndexedMapOfShape MV0;
TopExp::MapShapes(aFace, TopAbs_VERTEX, MV0);
aCube.V010 = OppositeVertex( aCube.V000, MV0, aQuads);
aCube.V110 = OppositeVertex( aCube.V100, MV0, aQuads);
aCube.V011 = OppositeVertex( aCube.V001, MV0, aQuads);
aCube.V111 = OppositeVertex( aCube.V101, MV0, aQuads);
// 1.6 - find remaining faces given 4 vertices
int _indY0 = 0;
int _indY1 = GetFaceIndex(aMesh, aShape, meshFaces,
aCube.V010, aCube.V011, aCube.V110, aCube.V111);
int _indZ0 = GetFaceIndex(aMesh, aShape, meshFaces,
aCube.V000, aCube.V010, aCube.V100, aCube.V110);
int _indZ1 = GetFaceIndex(aMesh, aShape, meshFaces,
aCube.V001, aCube.V011, aCube.V101, aCube.V111);
int _indX0 = GetFaceIndex(aMesh, aShape, meshFaces,
aCube.V000, aCube.V001, aCube.V010, aCube.V011);
int _indX1 = GetFaceIndex(aMesh, aShape, meshFaces,
aCube.V100, aCube.V101, aCube.V110, aCube.V111);
// IPAL21120: SIGSEGV on Meshing attached Compound with Automatic Hexadralization
if ( _indY1 < 1 || _indZ0 < 1 || _indZ1 < 1 || _indX0 < 1 || _indX1 < 1 )
return error(COMPERR_BAD_SHAPE);
aCube.quad_Y0 = aQuads[_indY0];
aCube.quad_Y1 = aQuads[_indY1];
aCube.quad_Z0 = aQuads[_indZ0];
aCube.quad_Z1 = aQuads[_indZ1];
aCube.quad_X0 = aQuads[_indX0];
aCube.quad_X1 = aQuads[_indX1];
// 1.7 - get convertion coefs from face 2D normalized to 3D normalized
Conv2DStruct cx0; // for face X=0
Conv2DStruct cx1; // for face X=1
Conv2DStruct cy0;
Conv2DStruct cy1;
Conv2DStruct cz0;
Conv2DStruct cz1;
GetConv2DCoefs(*aCube.quad_X0, meshFaces[_indX0]->GetSubShape(),
aCube.V000, aCube.V010, aCube.V011, aCube.V001, cx0);
GetConv2DCoefs(*aCube.quad_X1, meshFaces[_indX1]->GetSubShape(),
aCube.V100, aCube.V110, aCube.V111, aCube.V101, cx1);
GetConv2DCoefs(*aCube.quad_Y0, meshFaces[_indY0]->GetSubShape(),
aCube.V000, aCube.V100, aCube.V101, aCube.V001, cy0);
GetConv2DCoefs(*aCube.quad_Y1, meshFaces[_indY1]->GetSubShape(),
aCube.V010, aCube.V110, aCube.V111, aCube.V011, cy1);
GetConv2DCoefs(*aCube.quad_Z0, meshFaces[_indZ0]->GetSubShape(),
aCube.V000, aCube.V100, aCube.V110, aCube.V010, cz0);
GetConv2DCoefs(*aCube.quad_Z1, meshFaces[_indZ1]->GetSubShape(),
aCube.V001, aCube.V101, aCube.V111, aCube.V011, cz1);
// 1.8 - create a 3D structure for normalized values
int nbx = aCube.quad_Z0->side[0]->NbPoints();
if (cz0.a1 == 0.) nbx = aCube.quad_Z0->side[1]->NbPoints();
int nby = aCube.quad_X0->side[0]->NbPoints();
if (cx0.a1 == 0.) nby = aCube.quad_X0->side[1]->NbPoints();
int nbz = aCube.quad_Y0->side[0]->NbPoints();
if (cy0.a1 != 0.) nbz = aCube.quad_Y0->side[1]->NbPoints();
int i1, j1, nbxyz = nbx * nby * nbz;
Point3DStruct *np = new Point3DStruct[nbxyz];
// 1.9 - store node indexes of faces
{
const TopoDS_Face & F = TopoDS::Face(meshFaces[_indX0]->GetSubShape());
faceQuadStruct *quad = aCube.quad_X0;
int i = 0; // j = x/face , k = y/face
int nbdown = quad->side[0]->NbPoints();
int nbright = quad->side[1]->NbPoints();
SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
while(itf->more()) {
const SMDS_MeshNode * node = itf->next();
if(aTool.IsMedium(node))
continue;
if ( !findIJ( node, quad, i1, j1 ))
return ClearAndReturn( aQuads, false );
int ij1 = j1 * nbdown + i1;
quad->uv_grid[ij1].node = node;
}
for (int i1 = 0; i1 < nbdown; i1++)
for (int j1 = 0; j1 < nbright; j1++) {
int ij1 = j1 * nbdown + i1;
int j = cx0.ia * i1 + cx0.ib * j1 + cx0.ic; // j = x/face
int k = cx0.ja * i1 + cx0.jb * j1 + cx0.jc; // k = y/face
int ijk = k * nbx * nby + j * nbx + i;
//MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
np[ijk].node = quad->uv_grid[ij1].node;
//SCRUTE(np[ijk].nodeId);
}
}
{
const TopoDS_Face & F = TopoDS::Face(meshFaces[_indX1]->GetSubShape());
SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
faceQuadStruct *quad = aCube.quad_X1;
int i = nbx - 1; // j = x/face , k = y/face
int nbdown = quad->side[0]->NbPoints();
int nbright = quad->side[1]->NbPoints();
while(itf->more()) {
const SMDS_MeshNode * node = itf->next();
if(aTool.IsMedium(node))
continue;
if ( !findIJ( node, quad, i1, j1 ))
return ClearAndReturn( aQuads, false );
int ij1 = j1 * nbdown + i1;
quad->uv_grid[ij1].node = node;
}
for (int i1 = 0; i1 < nbdown; i1++)
for (int j1 = 0; j1 < nbright; j1++) {
int ij1 = j1 * nbdown + i1;
int j = cx1.ia * i1 + cx1.ib * j1 + cx1.ic; // j = x/face
int k = cx1.ja * i1 + cx1.jb * j1 + cx1.jc; // k = y/face
int ijk = k * nbx * nby + j * nbx + i;
//MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
np[ijk].node = quad->uv_grid[ij1].node;
//SCRUTE(np[ijk].nodeId);
}
}
{
const TopoDS_Face & F = TopoDS::Face(meshFaces[_indY0]->GetSubShape());
SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
faceQuadStruct *quad = aCube.quad_Y0;
int j = 0; // i = x/face , k = y/face
int nbdown = quad->side[0]->NbPoints();
int nbright = quad->side[1]->NbPoints();
while(itf->more()) {
const SMDS_MeshNode * node = itf->next();
if(aTool.IsMedium(node))
continue;
if ( !findIJ( node, quad, i1, j1 ))
return ClearAndReturn( aQuads, false );
int ij1 = j1 * nbdown + i1;
quad->uv_grid[ij1].node = node;
}
for (int i1 = 0; i1 < nbdown; i1++)
for (int j1 = 0; j1 < nbright; j1++) {
int ij1 = j1 * nbdown + i1;
int i = cy0.ia * i1 + cy0.ib * j1 + cy0.ic; // i = x/face
int k = cy0.ja * i1 + cy0.jb * j1 + cy0.jc; // k = y/face
int ijk = k * nbx * nby + j * nbx + i;
//MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
np[ijk].node = quad->uv_grid[ij1].node;
//SCRUTE(np[ijk].nodeId);
}
}
{
const TopoDS_Face & F = TopoDS::Face(meshFaces[_indY1]->GetSubShape());
SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
faceQuadStruct *quad = aCube.quad_Y1;
int j = nby - 1; // i = x/face , k = y/face
int nbdown = quad->side[0]->NbPoints();
int nbright = quad->side[1]->NbPoints();
while(itf->more()) {
const SMDS_MeshNode * node = itf->next();
if(aTool.IsMedium(node))
continue;
if ( !findIJ( node, quad, i1, j1 ))
return ClearAndReturn( aQuads, false );
int ij1 = j1 * nbdown + i1;
quad->uv_grid[ij1].node = node;
}
for (int i1 = 0; i1 < nbdown; i1++)
for (int j1 = 0; j1 < nbright; j1++) {
int ij1 = j1 * nbdown + i1;
int i = cy1.ia * i1 + cy1.ib * j1 + cy1.ic; // i = x/face
int k = cy1.ja * i1 + cy1.jb * j1 + cy1.jc; // k = y/face
int ijk = k * nbx * nby + j * nbx + i;
//MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
np[ijk].node = quad->uv_grid[ij1].node;
//SCRUTE(np[ijk].nodeId);
}
}
{
const TopoDS_Face & F = TopoDS::Face(meshFaces[_indZ0]->GetSubShape());
SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
faceQuadStruct *quad = aCube.quad_Z0;
int k = 0; // i = x/face , j = y/face
int nbdown = quad->side[0]->NbPoints();
int nbright = quad->side[1]->NbPoints();
while(itf->more()) {
const SMDS_MeshNode * node = itf->next();
if(aTool.IsMedium(node))
continue;
if ( !findIJ( node, quad, i1, j1 ))
return ClearAndReturn( aQuads, false );
int ij1 = j1 * nbdown + i1;
quad->uv_grid[ij1].node = node;
}
for (int i1 = 0; i1 < nbdown; i1++)
for (int j1 = 0; j1 < nbright; j1++) {
int ij1 = j1 * nbdown + i1;
int i = cz0.ia * i1 + cz0.ib * j1 + cz0.ic; // i = x/face
int j = cz0.ja * i1 + cz0.jb * j1 + cz0.jc; // j = y/face
int ijk = k * nbx * nby + j * nbx + i;
//MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
np[ijk].node = quad->uv_grid[ij1].node;
//SCRUTE(np[ijk].nodeId);
}
}
{
const TopoDS_Face & F = TopoDS::Face(meshFaces[_indZ1]->GetSubShape());
SMDS_NodeIteratorPtr itf= aMesh.GetSubMesh(F)->GetSubMeshDS()->GetNodes();
faceQuadStruct *quad = aCube.quad_Z1;
int k = nbz - 1; // i = x/face , j = y/face
int nbdown = quad->side[0]->NbPoints();
int nbright = quad->side[1]->NbPoints();
while(itf->more()) {
const SMDS_MeshNode * node = itf->next();
if(aTool.IsMedium(node))
continue;
if ( !findIJ( node, quad, i1, j1 ))
return ClearAndReturn( aQuads, false );
int ij1 = j1 * nbdown + i1;
quad->uv_grid[ij1].node = node;
}
for (int i1 = 0; i1 < nbdown; i1++)
for (int j1 = 0; j1 < nbright; j1++) {
int ij1 = j1 * nbdown + i1;
int i = cz1.ia * i1 + cz1.ib * j1 + cz1.ic; // i = x/face
int j = cz1.ja * i1 + cz1.jb * j1 + cz1.jc; // j = y/face
int ijk = k * nbx * nby + j * nbx + i;
//MESSAGE(" "<<ij1<<" "<<i<<" "<<j<<" "<<ijk);
np[ijk].node = quad->uv_grid[ij1].node;
//SCRUTE(np[ijk].nodeId);
}
}
// 2.0 - for each node of the cube:
// - get the 8 points 3D = 8 vertices of the cube
// - get the 12 points 3D on the 12 edges of the cube
// - get the 6 points 3D on the 6 faces with their ID
// - compute the point 3D
// - store the point 3D in SMESHDS, store its ID in 3D structure
int shapeID = meshDS->ShapeToIndex( aShape );
Pt3 p000, p001, p010, p011, p100, p101, p110, p111;
Pt3 px00, px01, px10, px11;
Pt3 p0y0, p0y1, p1y0, p1y1;
Pt3 p00z, p01z, p10z, p11z;
Pt3 pxy0, pxy1, px0z, px1z, p0yz, p1yz;
GetPoint(p000, 0, 0, 0, nbx, nby, nbz, np, meshDS);
GetPoint(p001, 0, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
GetPoint(p010, 0, nby - 1, 0, nbx, nby, nbz, np, meshDS);
GetPoint(p011, 0, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
GetPoint(p100, nbx - 1, 0, 0, nbx, nby, nbz, np, meshDS);
GetPoint(p101, nbx - 1, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
GetPoint(p110, nbx - 1, nby - 1, 0, nbx, nby, nbz, np, meshDS);
GetPoint(p111, nbx - 1, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
for (int i = 1; i < nbx - 1; i++) {
for (int j = 1; j < nby - 1; j++) {
for (int k = 1; k < nbz - 1; k++) {
// *** seulement maillage regulier
// 12 points on edges
GetPoint(px00, i, 0, 0, nbx, nby, nbz, np, meshDS);
GetPoint(px01, i, 0, nbz - 1, nbx, nby, nbz, np, meshDS);
GetPoint(px10, i, nby - 1, 0, nbx, nby, nbz, np, meshDS);
GetPoint(px11, i, nby - 1, nbz - 1, nbx, nby, nbz, np, meshDS);
GetPoint(p0y0, 0, j, 0, nbx, nby, nbz, np, meshDS);
GetPoint(p0y1, 0, j, nbz - 1, nbx, nby, nbz, np, meshDS);
GetPoint(p1y0, nbx - 1, j, 0, nbx, nby, nbz, np, meshDS);
GetPoint(p1y1, nbx - 1, j, nbz - 1, nbx, nby, nbz, np, meshDS);
GetPoint(p00z, 0, 0, k, nbx, nby, nbz, np, meshDS);
GetPoint(p01z, 0, nby - 1, k, nbx, nby, nbz, np, meshDS);
GetPoint(p10z, nbx - 1, 0, k, nbx, nby, nbz, np, meshDS);
GetPoint(p11z, nbx - 1, nby - 1, k, nbx, nby, nbz, np, meshDS);
// 12 points on faces
GetPoint(pxy0, i, j, 0, nbx, nby, nbz, np, meshDS);
GetPoint(pxy1, i, j, nbz - 1, nbx, nby, nbz, np, meshDS);
GetPoint(px0z, i, 0, k, nbx, nby, nbz, np, meshDS);
GetPoint(px1z, i, nby - 1, k, nbx, nby, nbz, np, meshDS);
GetPoint(p0yz, 0, j, k, nbx, nby, nbz, np, meshDS);
GetPoint(p1yz, nbx - 1, j, k, nbx, nby, nbz, np, meshDS);
int ijk = k * nbx * nby + j * nbx + i;
double x = double (i) / double (nbx - 1); // *** seulement
double y = double (j) / double (nby - 1); // *** maillage
double z = double (k) / double (nbz - 1); // *** regulier
Pt3 X;
for (int i = 0; i < 3; i++) {
X[i] = (1 - x) * p0yz[i] + x * p1yz[i]
+ (1 - y) * px0z[i] + y * px1z[i]
+ (1 - z) * pxy0[i] + z * pxy1[i]
- (1 - x) * ((1 - y) * p00z[i] + y * p01z[i])
- x * ((1 - y) * p10z[i] + y * p11z[i])
- (1 - y) * ((1 - z) * px00[i] + z * px01[i])
- y * ((1 - z) * px10[i] + z * px11[i])
- (1 - z) * ((1 - x) * p0y0[i] + x * p1y0[i])
- z * ((1 - x) * p0y1[i] + x * p1y1[i])
+ (1 - x) * ((1 - y) * ((1 - z) * p000[i] + z * p001[i])
+ y * ((1 - z) * p010[i] + z * p011[i]))
+ x * ((1 - y) * ((1 - z) * p100[i] + z * p101[i])
+ y * ((1 - z) * p110[i] + z * p111[i]));
}
SMDS_MeshNode * node = meshDS->AddNode(X[0], X[1], X[2]);
np[ijk].node = node;
meshDS->SetNodeInVolume(node, shapeID);
}
}
}
// find orientation of furute volumes according to MED convention
vector< bool > forward( nbx * nby );
SMDS_VolumeTool vTool;
for (int i = 0; i < nbx - 1; i++) {
for (int j = 0; j < nby - 1; j++) {
int n1 = j * nbx + i;
int n2 = j * nbx + i + 1;
int n3 = (j + 1) * nbx + i + 1;
int n4 = (j + 1) * nbx + i;
int n5 = nbx * nby + j * nbx + i;
int n6 = nbx * nby + j * nbx + i + 1;
int n7 = nbx * nby + (j + 1) * nbx + i + 1;
int n8 = nbx * nby + (j + 1) * nbx + i;
SMDS_VolumeOfNodes tmpVol (np[n1].node,np[n2].node,np[n3].node,np[n4].node,
np[n5].node,np[n6].node,np[n7].node,np[n8].node);
vTool.Set( &tmpVol );
forward[ n1 ] = vTool.IsForward();
}
}
//2.1 - for each node of the cube (less 3 *1 Faces):
// - store hexahedron in SMESHDS
MESSAGE("Storing hexahedron into the DS");
for (int i = 0; i < nbx - 1; i++) {
for (int j = 0; j < nby - 1; j++) {
bool isForw = forward.at( j * nbx + i );
for (int k = 0; k < nbz - 1; k++) {
int n1 = k * nbx * nby + j * nbx + i;
int n2 = k * nbx * nby + j * nbx + i + 1;
int n3 = k * nbx * nby + (j + 1) * nbx + i + 1;
int n4 = k * nbx * nby + (j + 1) * nbx + i;
int n5 = (k + 1) * nbx * nby + j * nbx + i;
int n6 = (k + 1) * nbx * nby + j * nbx + i + 1;
int n7 = (k + 1) * nbx * nby + (j + 1) * nbx + i + 1;
int n8 = (k + 1) * nbx * nby + (j + 1) * nbx + i;
SMDS_MeshVolume * elt;
if ( isForw ) {
elt = aTool.AddVolume(np[n1].node, np[n2].node,
np[n3].node, np[n4].node,
np[n5].node, np[n6].node,
np[n7].node, np[n8].node);
}
else {
elt = aTool.AddVolume(np[n1].node, np[n4].node,
np[n3].node, np[n2].node,
np[n5].node, np[n8].node,
np[n7].node, np[n6].node);
}
meshDS->SetMeshElementOnShape(elt, shapeID);
}
}
}
if ( np ) delete [] np;
return ClearAndReturn( aQuads, true );
}