bool SMESH_Algo::GetSortedNodesOnEdge(const SMESHDS_Mesh* theMesh,
const TopoDS_Edge& theEdge,
const bool ignoreMediumNodes,
map< double, const SMDS_MeshNode* > & theNodes)
{
theNodes.clear();
if ( !theMesh || theEdge.IsNull() )
return false;
SMESHDS_SubMesh * eSubMesh = theMesh->MeshElements( theEdge );
if ( !eSubMesh || !eSubMesh->GetElements()->more() )
return false; // edge is not meshed
int nbNodes = 0;
set < double > paramSet;
if ( eSubMesh )
{
// loop on nodes of an edge: sort them by param on edge
SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
while ( nIt->more() )
{
const SMDS_MeshNode* node = nIt->next();
if ( ignoreMediumNodes ) {
SMDS_ElemIteratorPtr elemIt = node->GetInverseElementIterator();
if ( elemIt->more() && elemIt->next()->IsMediumNode( node ))
continue;
}
const SMDS_PositionPtr& pos = node->GetPosition();
if ( pos->GetTypeOfPosition() != SMDS_TOP_EDGE )
return false;
const SMDS_EdgePosition* epos =
static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
theNodes.insert( make_pair( epos->GetUParameter(), node ));
++nbNodes;
}
}
// add vertex nodes
TopoDS_Vertex v1, v2;
TopExp::Vertices(theEdge, v1, v2);
const SMDS_MeshNode* n1 = VertexNode( v1, (SMESHDS_Mesh*) theMesh );
const SMDS_MeshNode* n2 = VertexNode( v2, (SMESHDS_Mesh*) theMesh );
Standard_Real f, l;
BRep_Tool::Range(theEdge, f, l);
if ( v1.Orientation() != TopAbs_FORWARD )
std::swap( f, l );
if ( n1 && ++nbNodes )
theNodes.insert( make_pair( f, n1 ));
if ( n2 && ++nbNodes )
theNodes.insert( make_pair( l, n2 ));
return theNodes.size() == nbNodes;
}
bool SMESH_Algo::GetNodeParamOnEdge(const SMESHDS_Mesh* theMesh,
const TopoDS_Edge& theEdge,
vector< double > & theParams)
{
theParams.clear();
if ( !theMesh || theEdge.IsNull() )
return false;
SMESHDS_SubMesh * eSubMesh = theMesh->MeshElements( theEdge );
if ( !eSubMesh || !eSubMesh->GetElements()->more() )
return false; // edge is not meshed
//int nbEdgeNodes = 0;
set < double > paramSet;
if ( eSubMesh )
{
// loop on nodes of an edge: sort them by param on edge
SMDS_NodeIteratorPtr nIt = eSubMesh->GetNodes();
while ( nIt->more() )
{
const SMDS_MeshNode* node = nIt->next();
const SMDS_PositionPtr& pos = node->GetPosition();
if ( pos->GetTypeOfPosition() != SMDS_TOP_EDGE )
return false;
const SMDS_EdgePosition* epos =
static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
if ( !paramSet.insert( epos->GetUParameter() ).second )
return false; // equal parameters
}
}
// add vertex nodes params
TopoDS_Vertex V1,V2;
TopExp::Vertices( theEdge, V1, V2);
if ( VertexNode( V1, theMesh ) &&
!paramSet.insert( BRep_Tool::Parameter(V1,theEdge) ).second )
return false; // there are equal parameters
if ( VertexNode( V2, theMesh ) &&
!paramSet.insert( BRep_Tool::Parameter(V2,theEdge) ).second )
return false; // there are equal parameters
// fill the vector
theParams.resize( paramSet.size() );
set < double >::iterator par = paramSet.begin();
vector< double >::iterator vecPar = theParams.begin();
for ( ; par != paramSet.end(); ++par, ++vecPar )
*vecPar = *par;
return theParams.size() > 1;
}
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_Mesher::Compute()
{
#ifdef WNT
netgen::MeshingParameters& mparams = netgen::GlobalMeshingParameters();
#else
netgen::MeshingParameters& mparams = netgen::mparam;
#endif
MESSAGE("Compute with:\n"
" max size = " << mparams.maxh << "\n"
" segments per edge = " << mparams.segmentsperedge);
MESSAGE("\n"
" growth rate = " << mparams.grading << "\n"
" elements per radius = " << mparams.curvaturesafety << "\n"
" second order = " << mparams.secondorder << "\n"
" quad allowed = " << mparams.quad);
SMESH_ComputeErrorPtr error = SMESH_ComputeError::New();
nglib::Ng_Init();
// -------------------------
// Prepare OCC geometry
// -------------------------
netgen::OCCGeometry occgeo;
list< SMESH_subMesh* > meshedSM;
PrepareOCCgeometry( occgeo, _shape, *_mesh, &meshedSM );
// -------------------------
// Generate the mesh
// -------------------------
netgen::Mesh *ngMesh = NULL;
SMESH_Comment comment;
int err = 0;
int nbInitNod = 0;
int nbInitSeg = 0;
int nbInitFac = 0;
// vector of nodes in which node index == netgen ID
vector< SMDS_MeshNode* > nodeVec;
try
{
// ----------------
// compute 1D mesh
// ----------------
// pass 1D simple parameters to NETGEN
if ( _simpleHyp ) {
if ( int nbSeg = _simpleHyp->GetNumberOfSegments() ) {
// nb of segments
mparams.segmentsperedge = nbSeg + 0.1;
mparams.maxh = occgeo.boundingbox.Diam();
mparams.grading = 0.01;
}
else {
// segment length
mparams.segmentsperedge = 1;
mparams.maxh = _simpleHyp->GetLocalLength();
}
}
// let netgen create ngMesh and calculate element size on not meshed shapes
char *optstr = 0;
int startWith = netgen::MESHCONST_ANALYSE;
int endWith = netgen::MESHCONST_ANALYSE;
err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
if (err) comment << "Error in netgen::OCCGenerateMesh() at MESHCONST_ANALYSE step";
// fill ngMesh with nodes and elements of computed submeshes
err = ! fillNgMesh(occgeo, *ngMesh, nodeVec, meshedSM);
nbInitNod = ngMesh->GetNP();
nbInitSeg = ngMesh->GetNSeg();
nbInitFac = ngMesh->GetNSE();
// compute mesh
if (!err)
{
startWith = endWith = netgen::MESHCONST_MESHEDGES;
err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
if (err) comment << "Error in netgen::OCCGenerateMesh() at 1D mesh generation";
}
// ---------------------
// compute surface mesh
// ---------------------
if (!err)
{
// pass 2D simple parameters to NETGEN
if ( _simpleHyp ) {
if ( double area = _simpleHyp->GetMaxElementArea() ) {
// face area
mparams.maxh = sqrt(2. * area/sqrt(3.0));
mparams.grading = 0.4; // moderate size growth
}
else {
// length from edges
double length = 0;
TopTools_MapOfShape tmpMap;
for ( TopExp_Explorer exp( _shape, TopAbs_EDGE ); exp.More(); exp.Next() )
if( tmpMap.Add(exp.Current()) )
length += SMESH_Algo::EdgeLength( TopoDS::Edge( exp.Current() ));
if ( ngMesh->GetNSeg() ) {
// we have to multiply length by 2 since for each TopoDS_Edge there
// are double set of NETGEN edges or, in other words, we have to
// divide ngMesh->GetNSeg() on 2.
mparams.maxh = 2*length / ngMesh->GetNSeg();
}
else
mparams.maxh = 1000;
mparams.grading = 0.2; // slow size growth
}
mparams.maxh = min( mparams.maxh, occgeo.boundingbox.Diam()/2 );
ngMesh->SetGlobalH (mparams.maxh);
netgen::Box<3> bb = occgeo.GetBoundingBox();
bb.Increase (bb.Diam()/20);
ngMesh->SetLocalH (bb.PMin(), bb.PMax(), mparams.grading);
}
// let netgen compute 2D mesh
startWith = netgen::MESHCONST_MESHSURFACE;
endWith = _optimize ? netgen::MESHCONST_OPTSURFACE : netgen::MESHCONST_MESHSURFACE;
err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
if (err) comment << "Error in netgen::OCCGenerateMesh() at surface mesh generation";
}
// ---------------------
// generate volume mesh
// ---------------------
if (!err && _isVolume)
{
// add ng face descriptors of meshed faces
std::map< int, std::pair<int,int> >::iterator fId_soIds = _faceDescriptors.begin();
for ( ; fId_soIds != _faceDescriptors.end(); ++fId_soIds ) {
int faceID = fId_soIds->first;
int solidID1 = fId_soIds->second.first;
int solidID2 = fId_soIds->second.second;
ngMesh->AddFaceDescriptor (netgen::FaceDescriptor(faceID, solidID1, solidID2, 0));
}
// pass 3D simple parameters to NETGEN
const NETGENPlugin_SimpleHypothesis_3D* simple3d =
dynamic_cast< const NETGENPlugin_SimpleHypothesis_3D* > ( _simpleHyp );
if ( simple3d ) {
if ( double vol = simple3d->GetMaxElementVolume() ) {
// max volume
mparams.maxh = pow( 72, 1/6. ) * pow( vol, 1/3. );
mparams.maxh = min( mparams.maxh, occgeo.boundingbox.Diam()/2 );
}
else {
// length from faces
mparams.maxh = ngMesh->AverageH();
}
// netgen::ARRAY<double> maxhdom;
// maxhdom.SetSize (occgeo.NrSolids());
// maxhdom = mparams.maxh;
// ngMesh->SetMaxHDomain (maxhdom);
ngMesh->SetGlobalH (mparams.maxh);
mparams.grading = 0.4;
ngMesh->CalcLocalH();
}
// let netgen compute 3D mesh
startWith = netgen::MESHCONST_MESHVOLUME;
endWith = _optimize ? netgen::MESHCONST_OPTVOLUME : netgen::MESHCONST_MESHVOLUME;
err = netgen::OCCGenerateMesh(occgeo, ngMesh, startWith, endWith, optstr);
if (err) comment << "Error in netgen::OCCGenerateMesh()";
}
if (!err && mparams.secondorder > 0)
{
netgen::OCCRefinementSurfaces ref (occgeo);
ref.MakeSecondOrder (*ngMesh);
}
}
catch (netgen::NgException exc)
{
error->myName = err = COMPERR_ALGO_FAILED;
comment << exc.What();
}
int nbNod = ngMesh->GetNP();
int nbSeg = ngMesh->GetNSeg();
int nbFac = ngMesh->GetNSE();
int nbVol = ngMesh->GetNE();
MESSAGE((err ? "Mesh Generation failure" : "End of Mesh Generation") <<
", nb nodes: " << nbNod <<
", nb segments: " << nbSeg <<
", nb faces: " << nbFac <<
", nb volumes: " << nbVol);
// -----------------------------------------------------------
// Feed back the SMESHDS with the generated Nodes and Elements
// -----------------------------------------------------------
SMESHDS_Mesh* meshDS = _mesh->GetMeshDS();
bool isOK = ( !err && (_isVolume ? (nbVol > 0) : (nbFac > 0)) );
if ( true /*isOK*/ ) // get whatever built
{
// map of nodes assigned to submeshes
NCollection_Map<int> pindMap;
// create and insert nodes into nodeVec
nodeVec.resize( nbNod + 1 );
int i;
for (i = nbInitNod+1; i <= nbNod /*&& isOK*/; ++i )
{
const netgen::MeshPoint& ngPoint = ngMesh->Point(i);
SMDS_MeshNode* node = NULL;
bool newNodeOnVertex = false;
TopoDS_Vertex aVert;
if (i-nbInitNod <= occgeo.vmap.Extent())
{
// point on vertex
aVert = TopoDS::Vertex(occgeo.vmap(i-nbInitNod));
SMESHDS_SubMesh * submesh = meshDS->MeshElements(aVert);
if (submesh)
{
SMDS_NodeIteratorPtr it = submesh->GetNodes();
if (it->more())
{
node = const_cast<SMDS_MeshNode*> (it->next());
pindMap.Add(i);
}
}
if (!node)
newNodeOnVertex = true;
}
if (!node)
node = meshDS->AddNode(ngPoint.X(), ngPoint.Y(), ngPoint.Z());
if (!node)
{
MESSAGE("Cannot create a mesh node");
if ( !comment.size() ) comment << "Cannot create a mesh node";
nbSeg = nbFac = nbVol = isOK = 0;
break;
}
nodeVec.at(i) = node;
if (newNodeOnVertex)
{
// point on vertex
meshDS->SetNodeOnVertex(node, aVert);
pindMap.Add(i);
}
}
// create mesh segments along geometric edges
NCollection_Map<Link> linkMap;
for (i = nbInitSeg+1; i <= nbSeg/* && isOK*/; ++i )
{
const netgen::Segment& seg = ngMesh->LineSegment(i);
Link link(seg.p1, seg.p2);
if (linkMap.Contains(link))
continue;
linkMap.Add(link);
TopoDS_Edge aEdge;
int pinds[3] = { seg.p1, seg.p2, seg.pmid };
int nbp = 0;
double param2 = 0;
for (int j=0; j < 3; ++j)
{
int pind = pinds[j];
if (pind <= 0) continue;
++nbp;
double param;
if (j < 2)
{
if (aEdge.IsNull())
{
int aGeomEdgeInd = seg.epgeominfo[j].edgenr;
if (aGeomEdgeInd > 0 && aGeomEdgeInd <= occgeo.emap.Extent())
aEdge = TopoDS::Edge(occgeo.emap(aGeomEdgeInd));
}
param = seg.epgeominfo[j].dist;
param2 += param;
}
else
param = param2 * 0.5;
if (pind <= nbInitNod || pindMap.Contains(pind))
continue;
if (!aEdge.IsNull())
{
meshDS->SetNodeOnEdge(nodeVec.at(pind), aEdge, param);
pindMap.Add(pind);
}
}
SMDS_MeshEdge* edge;
if (nbp < 3) // second order ?
edge = meshDS->AddEdge(nodeVec.at(pinds[0]), nodeVec.at(pinds[1]));
else
edge = meshDS->AddEdge(nodeVec.at(pinds[0]), nodeVec.at(pinds[1]),
nodeVec.at(pinds[2]));
if (!edge)
{
if ( !comment.size() ) comment << "Cannot create a mesh edge";
MESSAGE("Cannot create a mesh edge");
nbSeg = nbFac = nbVol = isOK = 0;
break;
}
if (!aEdge.IsNull())
meshDS->SetMeshElementOnShape(edge, aEdge);
}
// create mesh faces along geometric faces
for (i = nbInitFac+1; i <= nbFac/* && isOK*/; ++i )
{
const netgen::Element2d& elem = ngMesh->SurfaceElement(i);
int aGeomFaceInd = elem.GetIndex();
TopoDS_Face aFace;
if (aGeomFaceInd > 0 && aGeomFaceInd <= occgeo.fmap.Extent())
aFace = TopoDS::Face(occgeo.fmap(aGeomFaceInd));
vector<SMDS_MeshNode*> nodes;
for (int j=1; j <= elem.GetNP(); ++j)
{
int pind = elem.PNum(j);
SMDS_MeshNode* node = nodeVec.at(pind);
nodes.push_back(node);
if (pind <= nbInitNod || pindMap.Contains(pind))
continue;
if (!aFace.IsNull())
{
const netgen::PointGeomInfo& pgi = elem.GeomInfoPi(j);
meshDS->SetNodeOnFace(node, aFace, pgi.u, pgi.v);
pindMap.Add(pind);
}
}
SMDS_MeshFace* face = NULL;
switch (elem.GetType())
{
case netgen::TRIG:
face = meshDS->AddFace(nodes[0],nodes[1],nodes[2]);
break;
case netgen::QUAD:
face = meshDS->AddFace(nodes[0],nodes[1],nodes[2],nodes[3]);
break;
case netgen::TRIG6:
face = meshDS->AddFace(nodes[0],nodes[1],nodes[2],nodes[5],nodes[3],nodes[4]);
break;
case netgen::QUAD8:
face = meshDS->AddFace(nodes[0],nodes[1],nodes[2],nodes[3],
nodes[4],nodes[7],nodes[5],nodes[6]);
break;
default:
MESSAGE("NETGEN created a face of unexpected type, ignoring");
continue;
}
if (!face)
{
if ( !comment.size() ) comment << "Cannot create a mesh face";
MESSAGE("Cannot create a mesh face");
nbSeg = nbFac = nbVol = isOK = 0;
break;
}
if (!aFace.IsNull())
meshDS->SetMeshElementOnShape(face, aFace);
}
// create tetrahedra
for (i = 1; i <= nbVol/* && isOK*/; ++i)
{
const netgen::Element& elem = ngMesh->VolumeElement(i);
int aSolidInd = elem.GetIndex();
TopoDS_Solid aSolid;
if (aSolidInd > 0 && aSolidInd <= occgeo.somap.Extent())
aSolid = TopoDS::Solid(occgeo.somap(aSolidInd));
vector<SMDS_MeshNode*> nodes;
for (int j=1; j <= elem.GetNP(); ++j)
{
int pind = elem.PNum(j);
SMDS_MeshNode* node = nodeVec.at(pind);
nodes.push_back(node);
if (pind <= nbInitNod || pindMap.Contains(pind))
continue;
if (!aSolid.IsNull())
{
// point in solid
meshDS->SetNodeInVolume(node, aSolid);
pindMap.Add(pind);
}
}
SMDS_MeshVolume* vol = NULL;
switch (elem.GetType())
{
case netgen::TET:
vol = meshDS->AddVolume(nodes[0],nodes[1],nodes[2],nodes[3]);
break;
case netgen::TET10:
vol = meshDS->AddVolume(nodes[0],nodes[1],nodes[2],nodes[3],
nodes[4],nodes[7],nodes[5],nodes[6],nodes[8],nodes[9]);
break;
default:
MESSAGE("NETGEN created a volume of unexpected type, ignoring");
continue;
}
if (!vol)
{
if ( !comment.size() ) comment << "Cannot create a mesh volume";
MESSAGE("Cannot create a mesh volume");
nbSeg = nbFac = nbVol = isOK = 0;
break;
}
if (!aSolid.IsNull())
meshDS->SetMeshElementOnShape(vol, aSolid);
}
}
if ( error->IsOK() && ( !isOK || comment.size() > 0 ))
error->myName = COMPERR_ALGO_FAILED;
if ( !comment.empty() )
error->myComment = comment;
// set bad compute error to subshapes of all failed subshapes shapes
if ( !error->IsOK() && err )
{
for (int i = 1; i <= occgeo.fmap.Extent(); i++) {
int status = occgeo.facemeshstatus[i-1];
if (status == 1 ) continue;
if ( SMESH_subMesh* sm = _mesh->GetSubMeshContaining( occgeo.fmap( i ))) {
SMESH_ComputeErrorPtr& smError = sm->GetComputeError();
if ( !smError || smError->IsOK() ) {
if ( status == -1 )
smError.reset( new SMESH_ComputeError( error->myName, error->myComment ));
else
smError.reset( new SMESH_ComputeError( COMPERR_ALGO_FAILED, "Ignored" ));
}
}
}
}
nglib::Ng_DeleteMesh((nglib::Ng_Mesh*)ngMesh);
nglib::Ng_Exit();
RemoveTmpFiles();
return error->IsOK();
}
bool SMESH_MesherHelper::LoadNodeColumns(TParam2ColumnMap & theParam2ColumnMap,
const TopoDS_Face& theFace,
const TopoDS_Edge& theBaseEdge,
SMESHDS_Mesh* theMesh)
{
// get vertices of theBaseEdge
TopoDS_Vertex vfb, vlb, vft; // first and last, bottom and top vertices
TopoDS_Edge eFrw = TopoDS::Edge( theBaseEdge.Oriented( TopAbs_FORWARD ));
TopExp::Vertices( eFrw, vfb, vlb );
// find the other edges of theFace and orientation of e1
TopoDS_Edge e1, e2, eTop;
bool rev1, CumOri = false;
TopExp_Explorer exp( theFace, TopAbs_EDGE );
int nbEdges = 0;
for ( ; exp.More(); exp.Next() ) {
if ( ++nbEdges > 4 ) {
return false; // more than 4 edges in theFace
}
TopoDS_Edge e = TopoDS::Edge( exp.Current() );
if ( theBaseEdge.IsSame( e ))
continue;
TopoDS_Vertex vCommon;
if ( !TopExp::CommonVertex( theBaseEdge, e, vCommon ))
eTop = e;
else if ( vCommon.IsSame( vfb )) {
e1 = e;
vft = TopExp::LastVertex( e1, CumOri );
rev1 = vfb.IsSame( vft );
if ( rev1 )
vft = TopExp::FirstVertex( e1, CumOri );
}
else
e2 = e;
}
if ( nbEdges < 4 ) {
return false; // less than 4 edges in theFace
}
if ( e2.IsNull() && vfb.IsSame( vlb ))
e2 = e1;
// submeshes corresponding to shapes
SMESHDS_SubMesh* smFace = theMesh->MeshElements( theFace );
SMESHDS_SubMesh* smb = theMesh->MeshElements( theBaseEdge );
SMESHDS_SubMesh* smt = theMesh->MeshElements( eTop );
SMESHDS_SubMesh* sm1 = theMesh->MeshElements( e1 );
SMESHDS_SubMesh* sm2 = theMesh->MeshElements( e2 );
SMESHDS_SubMesh* smVfb = theMesh->MeshElements( vfb );
SMESHDS_SubMesh* smVlb = theMesh->MeshElements( vlb );
SMESHDS_SubMesh* smVft = theMesh->MeshElements( vft );
if (!smFace || !smb || !smt || !sm1 || !sm2 || !smVfb || !smVlb || !smVft ) {
RETURN_BAD_RESULT( "NULL submesh " <<smFace<<" "<<smb<<" "<<smt<<" "<<
sm1<<" "<<sm2<<" "<<smVfb<<" "<<smVlb<<" "<<smVft);
}
if ( smb->NbNodes() != smt->NbNodes() || sm1->NbNodes() != sm2->NbNodes() ) {
RETURN_BAD_RESULT(" Diff nb of nodes on opposite edges" );
}
if (smVfb->NbNodes() != 1 || smVlb->NbNodes() != 1 || smVft->NbNodes() != 1) {
RETURN_BAD_RESULT("Empty submesh of vertex");
}
// define whether mesh is quadratic
bool isQuadraticMesh = false;
SMDS_ElemIteratorPtr eIt = smFace->GetElements();
if ( !eIt->more() ) {
RETURN_BAD_RESULT("No elements on the face");
}
const SMDS_MeshElement* e = eIt->next();
isQuadraticMesh = e->IsQuadratic();
if ( sm1->NbNodes() * smb->NbNodes() != smFace->NbNodes() ) {
// check quadratic case
if ( isQuadraticMesh ) {
// what if there are quadrangles and triangles mixed?
// int n1 = sm1->NbNodes()/2;
// int n2 = smb->NbNodes()/2;
// int n3 = sm1->NbNodes() - n1;
// int n4 = smb->NbNodes() - n2;
// int nf = sm1->NbNodes()*smb->NbNodes() - n3*n4;
// if( nf != smFace->NbNodes() ) {
// MESSAGE( "Wrong nb face nodes: " <<
// sm1->NbNodes()<<" "<<smb->NbNodes()<<" "<<smFace->NbNodes());
// return false;
// }
}
else {
RETURN_BAD_RESULT( "Wrong nb face nodes: " <<
sm1->NbNodes()<<" "<<smb->NbNodes()<<" "<<smFace->NbNodes());
}
}
// IJ size
int vsize = sm1->NbNodes() + 2;
int hsize = smb->NbNodes() + 2;
if(isQuadraticMesh) {
vsize = vsize - sm1->NbNodes()/2 -1;
hsize = hsize - smb->NbNodes()/2 -1;
}
// load nodes from theBaseEdge
std::set<const SMDS_MeshNode*> loadedNodes;
const SMDS_MeshNode* nullNode = 0;
std::vector<const SMDS_MeshNode*> & nVecf = theParam2ColumnMap[ 0.];
nVecf.resize( vsize, nullNode );
loadedNodes.insert( nVecf[ 0 ] = smVfb->GetNodes()->next() );
std::vector<const SMDS_MeshNode*> & nVecl = theParam2ColumnMap[ 1.];
nVecl.resize( vsize, nullNode );
loadedNodes.insert( nVecl[ 0 ] = smVlb->GetNodes()->next() );
double f, l;
BRep_Tool::Range( eFrw, f, l );
double range = l - f;
SMDS_NodeIteratorPtr nIt = smb->GetNodes();
const SMDS_MeshNode* node;
while ( nIt->more() ) {
node = nIt->next();
if(IsMedium(node, SMDSAbs_Edge))
continue;
const SMDS_EdgePosition* pos =
dynamic_cast<const SMDS_EdgePosition*>( node->GetPosition().get() );
if ( !pos ) {
return false;
}
double u = ( pos->GetUParameter() - f ) / range;
std::vector<const SMDS_MeshNode*> & nVec = theParam2ColumnMap[ u ];
nVec.resize( vsize, nullNode );
loadedNodes.insert( nVec[ 0 ] = node );
}
if ( theParam2ColumnMap.size() != hsize ) {
RETURN_BAD_RESULT( "Wrong node positions on theBaseEdge" );
}
// load nodes from e1
std::map< double, const SMDS_MeshNode*> sortedNodes; // sort by param on edge
nIt = sm1->GetNodes();
while ( nIt->more() ) {
node = nIt->next();
if(IsMedium(node))
continue;
const SMDS_EdgePosition* pos =
dynamic_cast<const SMDS_EdgePosition*>( node->GetPosition().get() );
if ( !pos ) {
return false;
}
sortedNodes.insert( std::make_pair( pos->GetUParameter(), node ));
}
loadedNodes.insert( nVecf[ vsize - 1 ] = smVft->GetNodes()->next() );
std::map< double, const SMDS_MeshNode*>::iterator u_n = sortedNodes.begin();
int row = rev1 ? vsize - 1 : 0;
int dRow = rev1 ? -1 : +1;
for ( ; u_n != sortedNodes.end(); u_n++ ) {
row += dRow;
loadedNodes.insert( nVecf[ row ] = u_n->second );
}
// try to load the rest nodes
// get all faces from theFace
TIDSortedElemSet allFaces, foundFaces;
eIt = smFace->GetElements();
while ( eIt->more() ) {
const SMDS_MeshElement* e = eIt->next();
if ( e->GetType() == SMDSAbs_Face )
allFaces.insert( e );
}
// Starting from 2 neighbour nodes on theBaseEdge, look for a face
// the nodes belong to, and between the nodes of the found face,
// look for a not loaded node considering this node to be the next
// in a column of the starting second node. Repeat, starting
// from nodes next to the previous starting nodes in their columns,
// and so on while a face can be found. Then go the the next pair
// of nodes on theBaseEdge.
TParam2ColumnMap::iterator par_nVec_1 = theParam2ColumnMap.begin();
TParam2ColumnMap::iterator par_nVec_2 = par_nVec_1;
// loop on columns
int col = 0;
for ( par_nVec_2++; par_nVec_2 != theParam2ColumnMap.end(); par_nVec_1++, par_nVec_2++ ) {
col++;
row = 0;
const SMDS_MeshNode* n1 = par_nVec_1->second[ row ];
const SMDS_MeshNode* n2 = par_nVec_2->second[ row ];
const SMDS_MeshElement* face = 0;
bool lastColOnClosedFace = ( nVecf[ row ] == n2 );
do {
// look for a face by 2 nodes
face = SMESH_MeshEditor::FindFaceInSet( n1, n2, allFaces, foundFaces );
if ( face ) {
int nbFaceNodes = face->NbNodes();
if ( face->IsQuadratic() )
nbFaceNodes /= 2;
if ( nbFaceNodes>4 ) {
RETURN_BAD_RESULT(" Too many nodes in a face: " << nbFaceNodes );
}
// look for a not loaded node of the <face>
bool found = false;
const SMDS_MeshNode* n3 = 0; // a node defferent from n1 and n2
for ( int i = 0; i < nbFaceNodes && !found; ++i ) {
node = face->GetNode( i );
found = loadedNodes.insert( node ).second;
if ( !found && node != n1 && node != n2 )
n3 = node;
}
if ( lastColOnClosedFace && row + 1 < vsize ) {
node = nVecf[ row + 1 ];
found = ( face->GetNodeIndex( node ) >= 0 );
}
if ( found ) {
if ( ++row > vsize - 1 ) {
RETURN_BAD_RESULT( "Too many nodes in column "<< col <<": "<< row+1);
}
par_nVec_2->second[ row ] = node;
foundFaces.insert( face );
n2 = node;
if ( nbFaceNodes==4 ) {
n1 = par_nVec_1->second[ row ];
}
}
else if ( nbFaceNodes==3 && n3 == par_nVec_1->second[ row + 1 ] ) {
n1 = n3;
}
else {
RETURN_BAD_RESULT( "Not quad mesh, column "<< col );
}
}
}
while ( face && n1 && n2 );
if ( row < vsize - 1 ) {
MESSAGE( "Too few nodes in column "<< col <<": "<< row+1);
MESSAGE( "Base node 1: "<< par_nVec_1->second[0]);
MESSAGE( "Base node 2: "<< par_nVec_2->second[0]);
if ( n1 ) { MESSAGE( "Current node 1: "<< n1); }
else { MESSAGE( "Current node 1: NULL"); }
if ( n2 ) { MESSAGE( "Current node 2: "<< n2); }
else { MESSAGE( "Current node 2: NULL"); }
MESSAGE( "first base node: "<< theParam2ColumnMap.begin()->second[0]);
MESSAGE( "last base node: "<< theParam2ColumnMap.rbegin()->second[0]);
return false;
}
} // loop on columns
return true;
}
bool StdMeshers_Projection_3D::Compute(SMESH_Mesh& aMesh, const TopoDS_Shape& aShape)
{
if ( !_sourceHypo )
return false;
SMESH_Mesh * srcMesh = _sourceHypo->GetSourceMesh();
SMESH_Mesh * tgtMesh = & aMesh;
if ( !srcMesh )
srcMesh = tgtMesh;
SMESHDS_Mesh * srcMeshDS = srcMesh->GetMeshDS();
SMESHDS_Mesh * tgtMeshDS = tgtMesh->GetMeshDS();
// get shell from shape3D
TopoDS_Shell srcShell, tgtShell;
TopExp_Explorer exp( _sourceHypo->GetSource3DShape(), TopAbs_SHELL );
int nbShell;
for ( nbShell = 0; exp.More(); exp.Next(), ++nbShell )
srcShell = TopoDS::Shell( exp.Current() );
if ( nbShell != 1 )
return error(COMPERR_BAD_SHAPE,
SMESH_Comment("Source shape must have 1 shell but not ") << nbShell);
exp.Init( aShape, TopAbs_SHELL );
for ( nbShell = 0; exp.More(); exp.Next(), ++nbShell )
tgtShell = TopoDS::Shell( exp.Current() );
if ( nbShell != 1 )
return error(COMPERR_BAD_SHAPE,
SMESH_Comment("Target shape must have 1 shell but not ") << nbShell);
// Check that shapes are blocks
if ( TAssocTool::Count( tgtShell, TopAbs_FACE , 1 ) != 6 ||
TAssocTool::Count( tgtShell, TopAbs_EDGE , 1 ) != 12 ||
TAssocTool::Count( tgtShell, TopAbs_WIRE , 1 ) != 6 )
return error(COMPERR_BAD_SHAPE, "Target shape is not a block");
if ( TAssocTool::Count( srcShell, TopAbs_FACE , 1 ) != 6 ||
TAssocTool::Count( srcShell, TopAbs_EDGE , 1 ) != 12 ||
TAssocTool::Count( srcShell, TopAbs_WIRE , 1 ) != 6 )
return error(COMPERR_BAD_SHAPE, "Source shape is not a block");
// Assure that mesh on a source shape is computed
SMESH_subMesh* srcSubMesh = srcMesh->GetSubMesh( _sourceHypo->GetSource3DShape() );
//SMESH_subMesh* tgtSubMesh = tgtMesh->GetSubMesh( aShape );
if ( tgtMesh == srcMesh && !aShape.IsSame( _sourceHypo->GetSource3DShape() )) {
if ( !TAssocTool::MakeComputed( srcSubMesh ))
return error(COMPERR_BAD_INPUT_MESH,"Source mesh not computed");
}
else {
if ( !srcSubMesh->IsMeshComputed() )
return error(COMPERR_BAD_INPUT_MESH,"Source mesh not computed");
}
// Find 2 pairs of corresponding vertices
TopoDS_Vertex tgtV000, tgtV100, srcV000, srcV100;
TAssocTool::TShapeShapeMap shape2ShapeMap;
if ( _sourceHypo->HasVertexAssociation() )
{
tgtV000 = _sourceHypo->GetTargetVertex(1);
tgtV100 = _sourceHypo->GetTargetVertex(2);
srcV000 = _sourceHypo->GetSourceVertex(1);
srcV100 = _sourceHypo->GetSourceVertex(2);
}
else
{
if ( !TAssocTool::FindSubShapeAssociation( tgtShell, tgtMesh, srcShell, srcMesh,
shape2ShapeMap) )
return error(COMPERR_BAD_SHAPE,"Topology of source and target shapes seems different" );
exp.Init( tgtShell, TopAbs_EDGE );
TopExp::Vertices( TopoDS::Edge( exp.Current() ), tgtV000, tgtV100 );
if ( !shape2ShapeMap.IsBound( tgtV000 ) || !shape2ShapeMap.IsBound( tgtV100 ))
return error("Association of subshapes failed" );
srcV000 = TopoDS::Vertex( shape2ShapeMap( tgtV000 ));
srcV100 = TopoDS::Vertex( shape2ShapeMap( tgtV100 ));
if ( !TAssocTool::IsSubShape( srcV000, srcShell ) ||
!TAssocTool::IsSubShape( srcV100, srcShell ))
return error("Incorrect association of subshapes" );
}
// Load 2 SMESH_Block's with src and tgt shells
SMESH_Block srcBlock, tgtBlock;
TopTools_IndexedMapOfOrientedShape scrShapes, tgtShapes;
if ( !tgtBlock.LoadBlockShapes( tgtShell, tgtV000, tgtV100, tgtShapes ))
return error(COMPERR_BAD_SHAPE, "Can't detect block subshapes. Not a block?");
if ( !srcBlock.LoadBlockShapes( srcShell, srcV000, srcV100, scrShapes ))
return error(COMPERR_BAD_SHAPE, "Can't detect block subshapes. Not a block?");
// Find matching nodes of src and tgt shells
TNodeNodeMap src2tgtNodeMap;
for ( int fId = SMESH_Block::ID_FirstF; fId < SMESH_Block::ID_Shell; ++fId )
{
// Corresponding subshapes
TopoDS_Face srcFace = TopoDS::Face( scrShapes( fId ));
TopoDS_Face tgtFace = TopoDS::Face( tgtShapes( fId ));
if ( _sourceHypo->HasVertexAssociation() ) { // associate face subshapes
shape2ShapeMap.Clear();
vector< int > edgeIdVec;
SMESH_Block::GetFaceEdgesIDs( fId, edgeIdVec );
for ( int i = 0; i < edgeIdVec.size(); ++i ) {
int eID = edgeIdVec[ i ];
shape2ShapeMap.Bind( tgtShapes( eID ), scrShapes( eID ));
if ( i < 2 ) {
vector< int > vertexIdVec;
SMESH_Block::GetEdgeVertexIDs( eID, vertexIdVec );
shape2ShapeMap.Bind( tgtShapes( vertexIdVec[0] ), scrShapes( vertexIdVec[0] ));
shape2ShapeMap.Bind( tgtShapes( vertexIdVec[1] ), scrShapes( vertexIdVec[1] ));
}
}
}
// Find matching nodes of tgt and src faces
TNodeNodeMap faceMatchingNodes;
if ( ! TAssocTool::FindMatchingNodesOnFaces( srcFace, srcMesh, tgtFace, tgtMesh,
shape2ShapeMap, faceMatchingNodes ))
return error(COMPERR_BAD_INPUT_MESH,SMESH_Comment("Mesh on faces #")
<< srcMeshDS->ShapeToIndex( srcFace ) << " and "
<< tgtMeshDS->ShapeToIndex( tgtFace ) << " seems different" );
// put found matching nodes of 2 faces to the global map
src2tgtNodeMap.insert( faceMatchingNodes.begin(), faceMatchingNodes.end() );
}
// ------------------
// Make mesh
// ------------------
SMDS_VolumeTool volTool;
SMESH_MesherHelper helper( *tgtMesh );
helper.IsQuadraticSubMesh( aShape );
SMESHDS_SubMesh* srcSMDS = srcSubMesh->GetSubMeshDS();
SMDS_ElemIteratorPtr volIt = srcSMDS->GetElements();
while ( volIt->more() ) // loop on source volumes
{
const SMDS_MeshElement* srcVol = volIt->next();
if ( !srcVol || srcVol->GetType() != SMDSAbs_Volume )
continue;
int nbNodes = srcVol->NbNodes();
SMDS_VolumeTool::VolumeType volType = volTool.GetType( nbNodes );
if ( srcVol->IsQuadratic() )
nbNodes = volTool.NbCornerNodes( volType );
// Find or create a new tgt node for each node of a src volume
vector< const SMDS_MeshNode* > nodes( nbNodes );
for ( int i = 0; i < nbNodes; ++i )
{
const SMDS_MeshNode* srcNode = srcVol->GetNode( i );
const SMDS_MeshNode* tgtNode = 0;
TNodeNodeMap::iterator sN_tN = src2tgtNodeMap.find( srcNode );
if ( sN_tN != src2tgtNodeMap.end() ) // found
{
tgtNode = sN_tN->second;
}
else // Create a new tgt node
{
// compute normalized parameters of source node in srcBlock
gp_Pnt srcCoord = gpXYZ( srcNode );
gp_XYZ srcParam;
if ( !srcBlock.ComputeParameters( srcCoord, srcParam ))
return error(SMESH_Comment("Can't compute normalized parameters ")
<< "for source node " << srcNode->GetID());
// compute coordinates of target node by srcParam
gp_XYZ tgtXYZ;
if ( !tgtBlock.ShellPoint( srcParam, tgtXYZ ))
return error("Can't compute coordinates by normalized parameters");
// add node
SMDS_MeshNode* newNode = tgtMeshDS->AddNode( tgtXYZ.X(), tgtXYZ.Y(), tgtXYZ.Z() );
tgtMeshDS->SetNodeInVolume( newNode, helper.GetSubShapeID() );
tgtNode = newNode;
src2tgtNodeMap.insert( make_pair( srcNode, tgtNode ));
}
nodes[ i ] = tgtNode;
}
// Create a new volume
SMDS_MeshVolume * tgtVol = 0;
int id = 0, force3d = false;
switch ( volType ) {
case SMDS_VolumeTool::TETRA :
case SMDS_VolumeTool::QUAD_TETRA:
tgtVol = helper.AddVolume( nodes[0],
nodes[1],
nodes[2],
nodes[3], id, force3d); break;
case SMDS_VolumeTool::PYRAM :
case SMDS_VolumeTool::QUAD_PYRAM:
tgtVol = helper.AddVolume( nodes[0],
nodes[1],
nodes[2],
nodes[3],
nodes[4], id, force3d); break;
case SMDS_VolumeTool::PENTA :
case SMDS_VolumeTool::QUAD_PENTA:
tgtVol = helper.AddVolume( nodes[0],
nodes[1],
nodes[2],
nodes[3],
nodes[4],
nodes[5], id, force3d); break;
case SMDS_VolumeTool::HEXA :
case SMDS_VolumeTool::QUAD_HEXA :
tgtVol = helper.AddVolume( nodes[0],
nodes[1],
nodes[2],
nodes[3],
nodes[4],
nodes[5],
nodes[6],
nodes[7], id, force3d); break;
default: // polyhedron
const SMDS_PolyhedralVolumeOfNodes * poly =
dynamic_cast<const SMDS_PolyhedralVolumeOfNodes*>( srcVol );
if ( !poly )
RETURN_BAD_RESULT("Unexpected volume type");
tgtVol = tgtMeshDS->AddPolyhedralVolume( nodes, poly->GetQuanities() );
}
if ( tgtVol ) {
tgtMeshDS->SetMeshElementOnShape( tgtVol, helper.GetSubShapeID() );
}
} // loop on volumes of src shell
return true;
}
bool NETGENPlugin_NETGEN_2D_ONLY::Compute(SMESH_Mesh& aMesh,
const TopoDS_Shape& aShape)
{
netgen::multithread.terminate = 0;
//netgen::multithread.task = "Surface meshing";
SMESHDS_Mesh* meshDS = aMesh.GetMeshDS();
SMESH_MesherHelper helper(aMesh);
helper.SetElementsOnShape( true );
NETGENPlugin_NetgenLibWrapper ngLib;
ngLib._isComputeOk = false;
netgen::Mesh ngMeshNoLocSize;
#if NETGEN_VERSION < 6
netgen::Mesh * ngMeshes[2] = { (netgen::Mesh*) ngLib._ngMesh, & ngMeshNoLocSize };
#else
netgen::Mesh * ngMeshes[2] = { (netgen::Mesh*) ngLib._ngMesh.get(), & ngMeshNoLocSize };
#endif
netgen::OCCGeometry occgeoComm;
// min / max sizes are set as follows:
// if ( _hypParameters )
// min and max are defined by the user
// else if ( _hypLengthFromEdges )
// min = aMesher.GetDefaultMinSize()
// max = average segment len of a FACE
// else if ( _hypMaxElementArea )
// min = aMesher.GetDefaultMinSize()
// max = f( _hypMaxElementArea )
// else
// min = aMesher.GetDefaultMinSize()
// max = max segment len of a FACE
NETGENPlugin_Mesher aMesher( &aMesh, aShape, /*isVolume=*/false);
aMesher.SetParameters( _hypParameters ); // _hypParameters -> netgen::mparam
const bool toOptimize = _hypParameters ? _hypParameters->GetOptimize() : true;
if ( _hypMaxElementArea )
{
netgen::mparam.maxh = sqrt( 2. * _hypMaxElementArea->GetMaxArea() / sqrt(3.0) );
}
if ( _hypQuadranglePreference )
netgen::mparam.quad = true;
// local size is common for all FACEs in aShape?
const bool isCommonLocalSize = ( !_hypLengthFromEdges && !_hypMaxElementArea && netgen::mparam.uselocalh );
const bool isDefaultHyp = ( !_hypLengthFromEdges && !_hypMaxElementArea && !_hypParameters );
if ( isCommonLocalSize ) // compute common local size in ngMeshes[0]
{
//list< SMESH_subMesh* > meshedSM[4]; --> all sub-shapes are added to occgeoComm
aMesher.PrepareOCCgeometry( occgeoComm, aShape, aMesh );//, meshedSM );
// local size set at MESHCONST_ANALYSE step depends on
// minh, face_maxh, grading and curvaturesafety; find minh if not set by the user
if ( !_hypParameters || netgen::mparam.minh < DBL_MIN )
{
if ( !_hypParameters )
netgen::mparam.maxh = occgeoComm.GetBoundingBox().Diam() / 3.;
netgen::mparam.minh = aMesher.GetDefaultMinSize( aShape, netgen::mparam.maxh );
}
// set local size depending on curvature and NOT closeness of EDGEs
netgen::occparam.resthcloseedgeenable = false;
//netgen::occparam.resthcloseedgefac = 1.0 + netgen::mparam.grading;
occgeoComm.face_maxh = netgen::mparam.maxh;
netgen::OCCSetLocalMeshSize( occgeoComm, *ngMeshes[0] );
occgeoComm.emap.Clear();
occgeoComm.vmap.Clear();
// set local size according to size of existing segments
const double factor = netgen::occparam.resthcloseedgefac;
TopTools_IndexedMapOfShape edgeMap;
TopExp::MapShapes( aMesh.GetShapeToMesh(), TopAbs_EDGE, edgeMap );
for ( int iE = 1; iE <= edgeMap.Extent(); ++iE )
{
const TopoDS_Shape& edge = edgeMap( iE );
if ( SMESH_Algo::isDegenerated( TopoDS::Edge( edge ))/* ||
helper.IsSubShape( edge, aShape )*/)
continue;
SMESHDS_SubMesh* smDS = meshDS->MeshElements( edge );
if ( !smDS ) continue;
SMDS_ElemIteratorPtr segIt = smDS->GetElements();
while ( segIt->more() )
{
const SMDS_MeshElement* seg = segIt->next();
SMESH_TNodeXYZ n1 = seg->GetNode(0);
SMESH_TNodeXYZ n2 = seg->GetNode(1);
gp_XYZ p = 0.5 * ( n1 + n2 );
netgen::Point3d pi(p.X(), p.Y(), p.Z());
ngMeshes[0]->RestrictLocalH( pi, factor * ( n1 - n2 ).Modulus() );
}
}
}
netgen::mparam.uselocalh = toOptimize; // restore as it is used at surface optimization
// ==================
// Loop on all FACEs
// ==================
vector< const SMDS_MeshNode* > nodeVec;
TopExp_Explorer fExp( aShape, TopAbs_FACE );
for ( int iF = 0; fExp.More(); fExp.Next(), ++iF )
{
TopoDS_Face F = TopoDS::Face( fExp.Current() /*.Oriented( TopAbs_FORWARD )*/);
int faceID = meshDS->ShapeToIndex( F );
SMESH_ComputeErrorPtr& faceErr = aMesh.GetSubMesh( F )->GetComputeError();
_quadraticMesh = helper.IsQuadraticSubMesh( F );
const bool ignoreMediumNodes = _quadraticMesh;
// build viscous layers if required
if ( F.Orientation() != TopAbs_FORWARD &&
F.Orientation() != TopAbs_REVERSED )
F.Orientation( TopAbs_FORWARD ); // avoid pb with TopAbs_INTERNAL
SMESH_ProxyMesh::Ptr proxyMesh = StdMeshers_ViscousLayers2D::Compute( aMesh, F );
if ( !proxyMesh )
continue;
// ------------------------
// get all EDGEs of a FACE
// ------------------------
TSideVector wires =
StdMeshers_FaceSide::GetFaceWires( F, aMesh, ignoreMediumNodes, faceErr, proxyMesh );
if ( faceErr && !faceErr->IsOK() )
continue;
int nbWires = wires.size();
if ( nbWires == 0 )
{
faceErr.reset
( new SMESH_ComputeError
( COMPERR_ALGO_FAILED, "Problem in StdMeshers_FaceSide::GetFaceWires()" ));
continue;
}
if ( wires[0]->NbSegments() < 3 ) // ex: a circle with 2 segments
{
faceErr.reset
( new SMESH_ComputeError
( COMPERR_BAD_INPUT_MESH, SMESH_Comment("Too few segments: ")<<wires[0]->NbSegments()) );
continue;
}
// ----------------------
// compute maxh of a FACE
// ----------------------
if ( !_hypParameters )
{
double edgeLength = 0;
if (_hypLengthFromEdges )
{
// compute edgeLength as an average segment length
int nbSegments = 0;
for ( int iW = 0; iW < nbWires; ++iW )
{
edgeLength += wires[ iW ]->Length();
nbSegments += wires[ iW ]->NbSegments();
}
if ( nbSegments )
edgeLength /= nbSegments;
netgen::mparam.maxh = edgeLength;
}
else if ( isDefaultHyp )
{
// set edgeLength by a longest segment
double maxSeg2 = 0;
for ( int iW = 0; iW < nbWires; ++iW )
{
const UVPtStructVec& points = wires[ iW ]->GetUVPtStruct();
if ( points.empty() )
return error( COMPERR_BAD_INPUT_MESH );
gp_Pnt pPrev = SMESH_TNodeXYZ( points[0].node );
for ( size_t i = 1; i < points.size(); ++i )
{
gp_Pnt p = SMESH_TNodeXYZ( points[i].node );
maxSeg2 = Max( maxSeg2, p.SquareDistance( pPrev ));
pPrev = p;
}
}
edgeLength = sqrt( maxSeg2 ) * 1.05;
netgen::mparam.maxh = edgeLength;
}
if ( netgen::mparam.maxh < DBL_MIN )
netgen::mparam.maxh = occgeoComm.GetBoundingBox().Diam();
if ( !isCommonLocalSize )
{
netgen::mparam.minh = aMesher.GetDefaultMinSize( F, netgen::mparam.maxh );
}
}
// prepare occgeom
netgen::OCCGeometry occgeom;
occgeom.shape = F;
occgeom.fmap.Add( F );
occgeom.CalcBoundingBox();
occgeom.facemeshstatus.SetSize(1);
occgeom.facemeshstatus = 0;
occgeom.face_maxh_modified.SetSize(1);
occgeom.face_maxh_modified = 0;
occgeom.face_maxh.SetSize(1);
occgeom.face_maxh = netgen::mparam.maxh;
// -------------------------
// Fill netgen mesh
// -------------------------
// MESHCONST_ANALYSE step may lead to a failure, so we make an attempt
// w/o MESHCONST_ANALYSE at the second loop
int err = 0;
enum { LOC_SIZE, NO_LOC_SIZE };
int iLoop = isCommonLocalSize ? 0 : 1;
for ( ; iLoop < 2; iLoop++ )
{
//bool isMESHCONST_ANALYSE = false;
InitComputeError();
netgen::Mesh * ngMesh = ngMeshes[ iLoop ];
ngMesh->DeleteMesh();
if ( iLoop == NO_LOC_SIZE )
{
ngMesh->SetGlobalH ( mparam.maxh );
ngMesh->SetMinimalH( mparam.minh );
Box<3> bb = occgeom.GetBoundingBox();
bb.Increase (bb.Diam()/10);
ngMesh->SetLocalH (bb.PMin(), bb.PMax(), mparam.grading);
}
nodeVec.clear();
faceErr = aMesher.AddSegmentsToMesh( *ngMesh, occgeom, wires, helper, nodeVec,
/*overrideMinH=*/!_hypParameters);
if ( faceErr && !faceErr->IsOK() )
break;
//if ( !isCommonLocalSize )
//limitSize( ngMesh, mparam.maxh * 0.8);
// -------------------------
// Generate surface mesh
// -------------------------
const int startWith = MESHCONST_MESHSURFACE;
const int endWith = toOptimize ? MESHCONST_OPTSURFACE : MESHCONST_MESHSURFACE;
SMESH_Comment str;
try {
OCC_CATCH_SIGNALS;
#if NETGEN_VERSION >=6
std::shared_ptr<netgen::Mesh> mesh_ptr(ngMesh, [](netgen::Mesh*) {});
err = netgen::OCCGenerateMesh(occgeom, mesh_ptr, netgen::mparam, startWith, endWith);
#elif NETGEN_VERSION > 4
err = netgen::OCCGenerateMesh(occgeom, ngMesh, netgen::mparam, startWith, endWith);
#else
char *optstr = 0;
err = netgen::OCCGenerateMesh(occgeom, ngMesh, startWith, endWith, optstr);
#endif
if ( netgen::multithread.terminate )
return false;
if ( err )
str << "Error in netgen::OCCGenerateMesh() at " << netgen::multithread.task;
}
catch (Standard_Failure& ex)
{
err = 1;
str << "Exception in netgen::OCCGenerateMesh()"
<< " at " << netgen::multithread.task
<< ": " << ex.DynamicType()->Name();
if ( ex.GetMessageString() && strlen( ex.GetMessageString() ))
str << ": " << ex.GetMessageString();
}
catch (...) {
err = 1;
str << "Exception in netgen::OCCGenerateMesh()"
<< " at " << netgen::multithread.task;
}
if ( err )
{
if ( aMesher.FixFaceMesh( occgeom, *ngMesh, 1 ))
break;
if ( iLoop == LOC_SIZE )
{
netgen::mparam.minh = netgen::mparam.maxh;
netgen::mparam.maxh = 0;
for ( int iW = 0; iW < wires.size(); ++iW )
{
StdMeshers_FaceSidePtr wire = wires[ iW ];
const vector<UVPtStruct>& uvPtVec = wire->GetUVPtStruct();
for ( size_t iP = 1; iP < uvPtVec.size(); ++iP )
{
SMESH_TNodeXYZ p( uvPtVec[ iP ].node );
netgen::Point3d np( p.X(),p.Y(),p.Z());
double segLen = p.Distance( uvPtVec[ iP-1 ].node );
double size = ngMesh->GetH( np );
netgen::mparam.minh = Min( netgen::mparam.minh, size );
netgen::mparam.maxh = Max( netgen::mparam.maxh, segLen );
}
}
//cerr << "min " << netgen::mparam.minh << " max " << netgen::mparam.maxh << endl;
netgen::mparam.minh *= 0.9;
netgen::mparam.maxh *= 1.1;
continue;
}
else
{
faceErr.reset( new SMESH_ComputeError( COMPERR_ALGO_FAILED, str ));
}
}
// ----------------------------------------------------
// Fill the SMESHDS with the generated nodes and faces
// ----------------------------------------------------
int nbNodes = ngMesh->GetNP();
int nbFaces = ngMesh->GetNSE();
int nbInputNodes = nodeVec.size()-1;
nodeVec.resize( nbNodes+1, 0 );
// add nodes
for ( int ngID = nbInputNodes + 1; ngID <= nbNodes; ++ngID )
{
const MeshPoint& ngPoint = ngMesh->Point( ngID );
SMDS_MeshNode * node = meshDS->AddNode(ngPoint(0), ngPoint(1), ngPoint(2));
nodeVec[ ngID ] = node;
}
// create faces
int i,j;
vector<const SMDS_MeshNode*> nodes;
for ( i = 1; i <= nbFaces ; ++i )
{
const Element2d& elem = ngMesh->SurfaceElement(i);
nodes.resize( elem.GetNP() );
for (j=1; j <= elem.GetNP(); ++j)
{
int pind = elem.PNum(j);
if ( pind < 1 )
break;
nodes[ j-1 ] = nodeVec[ pind ];
if ( nodes[ j-1 ]->GetPosition()->GetTypeOfPosition() == SMDS_TOP_3DSPACE )
{
const PointGeomInfo& pgi = elem.GeomInfoPi(j);
meshDS->SetNodeOnFace( nodes[ j-1 ], faceID, pgi.u, pgi.v);
}
}
if ( j > elem.GetNP() )
{
SMDS_MeshFace* face = 0;
if ( elem.GetType() == TRIG )
face = helper.AddFace(nodes[0],nodes[1],nodes[2]);
else
face = helper.AddFace(nodes[0],nodes[1],nodes[2],nodes[3]);
}
}
break;
} // two attempts
} // loop on FACEs
return true;
}
const vector<UVPtStruct>& StdMeshers_FaceSide::GetUVPtStruct(bool isXConst,
double constValue) const
{
if ( myPoints.empty() ) {
if ( NbEdges() == 0 ) return myPoints;
SMESHDS_Mesh* meshDS = myMesh->GetMeshDS();
// sort nodes of all edges putting them into a map
map< double, const SMDS_MeshNode*> u2node;
//int nbOnDegen = 0;
for ( int i = 0; i < myEdge.size(); ++i )
{
// put 1st vertex node
TopoDS_Vertex VFirst, VLast;
TopExp::Vertices( myEdge[i], VFirst, VLast, true);
const SMDS_MeshNode* node = SMESH_Algo::VertexNode( VFirst, meshDS );
double prevNormPar = ( i == 0 ? 0 : myNormPar[ i-1 ]); // normalized param
if ( node ) { // internal nodes may be missing
u2node.insert( make_pair( prevNormPar, node ));
} else if ( i == 0 ) {
MESSAGE(" NO NODE on VERTEX" );
return myPoints;
}
// put 2nd vertex node for a last edge
if ( i+1 == myEdge.size() ) {
node = SMESH_Algo::VertexNode( VLast, meshDS );
if ( !node ) {
MESSAGE(" NO NODE on VERTEX" );
return myPoints;
}
u2node.insert( make_pair( 1., node ));
}
// put internal nodes
SMESHDS_SubMesh* sm = meshDS->MeshElements( myEdge[i] );
if ( !sm ) continue;
SMDS_NodeIteratorPtr nItr = sm->GetNodes();
double paramSize = myLast[i] - myFirst[i], r = myNormPar[i] - prevNormPar;
while ( nItr->more() ) {
const SMDS_MeshNode* node = nItr->next();
if ( myIgnoreMediumNodes && SMESH_MeshEditor::IsMedium( node, SMDSAbs_Edge ))
continue;
const SMDS_EdgePosition* epos =
static_cast<const SMDS_EdgePosition*>(node->GetPosition().get());
double u = epos->GetUParameter();
// paramSize is signed so orientation is taken into account
double normPar = prevNormPar + r * ( u - myFirst[i] ) / paramSize;
#ifdef _DEBUG_
if ( normPar > 1 || normPar < 0) {
dump("DEBUG");
MESSAGE ( "WRONG normPar: "<<normPar<< " prevNormPar="<<prevNormPar
<< " u="<<u << " myFirst[i]="<<myFirst[i]<< " myLast[i]="<<myLast[i]
<< " paramSize="<<paramSize );
}
#endif
u2node.insert( make_pair( normPar, node ));
}
}
if ( u2node.size() != myNbPonits ) {
MESSAGE("Wrong node parameters on edges, u2node.size():"
<<u2node.size()<<" != myNbPonits:"<<myNbPonits);
return myPoints;
}
// fill array of UVPtStruct
vector<uvPtStruct>* points = const_cast<vector<uvPtStruct>*>( &myPoints );
points->resize( myNbPonits );
int EdgeIndex = 0;
double prevNormPar = 0, paramSize = myNormPar[ EdgeIndex ];
map< double, const SMDS_MeshNode*>::iterator u_node = u2node.begin();
for (int i = 0 ; u_node != u2node.end(); ++u_node, ++i ) {
UVPtStruct & uvPt = (*points)[i];
uvPt.node = u_node->second;
uvPt.x = uvPt.y = uvPt.normParam = u_node->first;
if ( isXConst ) uvPt.x = constValue;
else uvPt.y = constValue;
if ( myNormPar[ EdgeIndex ] < uvPt.normParam ) {
prevNormPar = myNormPar[ EdgeIndex ];
++EdgeIndex;
#ifdef _DEBUG_
if ( EdgeIndex >= myEdge.size() ) {
dump("DEBUG");
MESSAGE ( "WRONg EdgeIndex " << 1+EdgeIndex
<< " myNormPar.size()="<<myNormPar.size()
<< " myNormPar["<< EdgeIndex<<"]="<< myNormPar[ EdgeIndex ]
<< " uvPt.normParam="<<uvPt.normParam );
}
#endif
paramSize = myNormPar[ EdgeIndex ] - prevNormPar;
}
const SMDS_EdgePosition* epos =
dynamic_cast<const SMDS_EdgePosition*>(uvPt.node->GetPosition().get());
if ( epos ) {
uvPt.param = epos->GetUParameter();
}
else {
double r = ( uvPt.normParam - prevNormPar )/ paramSize;
// uvPt.param = myFirst[EdgeIndex] * ( 1 - r ) + myLast[EdgeIndex] * r;
uvPt.param = ( r > 0.5 ? myLast[EdgeIndex] : myFirst[EdgeIndex] );
}
if ( !myC2d[ EdgeIndex ].IsNull() ) {
gp_Pnt2d p = myC2d[ EdgeIndex ]->Value( uvPt.param );
uvPt.u = p.X();
uvPt.v = p.Y();
}
else {
uvPt.u = uvPt.v = 1e+100;
}
}
}
return myPoints;
}
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 );
}
