bool SMESH_MesherHelper::IsQuadraticSubMesh(const TopoDS_Shape& aSh)
{
SMESHDS_Mesh* meshDS = GetMeshDS();
// we can create quadratic elements only if all elements
// created on subshapes of given shape are quadratic
// also we have to fill myNLinkNodeMap
myCreateQuadratic = true;
mySeamShapeIds.clear();
myDegenShapeIds.clear();
TopAbs_ShapeEnum subType( aSh.ShapeType()==TopAbs_FACE ? TopAbs_EDGE : TopAbs_FACE );
SMDSAbs_ElementType elemType( subType==TopAbs_FACE ? SMDSAbs_Face : SMDSAbs_Edge );
int nbOldLinks = myNLinkNodeMap.size();
TopExp_Explorer exp( aSh, subType );
for (; exp.More() && myCreateQuadratic; exp.Next()) {
if ( SMESHDS_SubMesh * subMesh = meshDS->MeshElements( exp.Current() )) {
if ( SMDS_ElemIteratorPtr it = subMesh->GetElements() ) {
while(it->more()) {
const SMDS_MeshElement* e = it->next();
if ( e->GetType() != elemType || !e->IsQuadratic() ) {
myCreateQuadratic = false;
break;
}
else {
// fill NLinkNodeMap
switch ( e->NbNodes() ) {
case 3:
AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(2)); break;
case 6:
AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(3));
AddNLinkNode(e->GetNode(1),e->GetNode(2),e->GetNode(4));
AddNLinkNode(e->GetNode(2),e->GetNode(0),e->GetNode(5)); break;
case 8:
AddNLinkNode(e->GetNode(0),e->GetNode(1),e->GetNode(4));
AddNLinkNode(e->GetNode(1),e->GetNode(2),e->GetNode(5));
AddNLinkNode(e->GetNode(2),e->GetNode(3),e->GetNode(6));
AddNLinkNode(e->GetNode(3),e->GetNode(0),e->GetNode(7));
break;
default:
myCreateQuadratic = false;
break;
}
}
}
}
}
}
if ( nbOldLinks == myNLinkNodeMap.size() )
myCreateQuadratic = false;
if(!myCreateQuadratic) {
myNLinkNodeMap.clear();
}
SetSubShape( aSh );
return myCreateQuadratic;
}
//=============================================================================
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 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);
}
void SMESHDS_GroupOnGeom::SetShape( const TopoDS_Shape& theShape)
{
SMESHDS_Mesh* aMesh = const_cast<SMESHDS_Mesh*>( GetMesh() );
mySubMesh = aMesh->MeshElements( aMesh->AddCompoundSubmesh( theShape ));
myShape = theShape;
}
bool StdMeshers_RadialPrism_3D::Compute(SMESH_Mesh& aMesh, const TopoDS_Shape& aShape)
{
TopExp_Explorer exp;
SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
myHelper = new SMESH_MesherHelper( aMesh );
myHelper->IsQuadraticSubMesh( aShape );
// to delete helper at exit from Compute()
std::auto_ptr<SMESH_MesherHelper> helperDeleter( myHelper );
// get 2 shells
TopoDS_Solid solid = TopoDS::Solid( aShape );
TopoDS_Shell outerShell = BRepClass3d::OuterShell( solid );
TopoDS_Shape innerShell;
int nbShells = 0;
for ( TopoDS_Iterator It (solid); It.More(); It.Next(), ++nbShells )
if ( !outerShell.IsSame( It.Value() ))
innerShell = It.Value();
if ( nbShells != 2 )
return error(COMPERR_BAD_SHAPE, SMESH_Comment("Must be 2 shells but not ")<<nbShells);
// ----------------------------------
// Associate sub-shapes of the shells
// ----------------------------------
ProjectionUtils::TShapeShapeMap shape2ShapeMaps[2];
bool mapOk1 = ProjectionUtils::FindSubShapeAssociation( innerShell, &aMesh,
outerShell, &aMesh,
shape2ShapeMaps[0]);
bool mapOk2 = ProjectionUtils::FindSubShapeAssociation( innerShell.Reversed(), &aMesh,
outerShell, &aMesh,
shape2ShapeMaps[1]);
if ( !mapOk1 && !mapOk2 )
return error(COMPERR_BAD_SHAPE,"Topology of inner and outer shells seems different" );
int iMap;
if ( shape2ShapeMaps[0].Extent() == shape2ShapeMaps[1].Extent() )
{
// choose an assiciation by shortest distance between VERTEXes
double dist1 = 0, dist2 = 0;
TopTools_DataMapIteratorOfDataMapOfShapeShape ssIt( shape2ShapeMaps[0]._map1to2 );
for (; ssIt.More(); ssIt.Next() )
{
if ( ssIt.Key().ShapeType() != TopAbs_VERTEX ) continue;
gp_Pnt pIn = BRep_Tool::Pnt( TopoDS::Vertex( ssIt.Key() ));
gp_Pnt pOut1 = BRep_Tool::Pnt( TopoDS::Vertex( ssIt.Value() ));
gp_Pnt pOut2 = BRep_Tool::Pnt( TopoDS::Vertex( shape2ShapeMaps[1]( ssIt.Key() )));
dist1 += pIn.SquareDistance( pOut1 );
dist2 += pIn.SquareDistance( pOut2 );
}
iMap = ( dist1 < dist2 ) ? 0 : 1;
}
else
{
iMap = ( shape2ShapeMaps[0].Extent() > shape2ShapeMaps[1].Extent() ) ? 0 : 1;
}
ProjectionUtils::TShapeShapeMap& shape2ShapeMap = shape2ShapeMaps[iMap];
// ------------------
// Make mesh
// ------------------
TNode2ColumnMap node2columnMap;
myLayerPositions.clear();
for ( exp.Init( outerShell, TopAbs_FACE ); exp.More(); exp.Next() )
{
// Corresponding sub-shapes
TopoDS_Face outFace = TopoDS::Face( exp.Current() );
TopoDS_Face inFace;
if ( !shape2ShapeMap.IsBound( outFace, /*isOut=*/true )) {
return error(SMESH_Comment("Corresponding inner face not found for face #" )
<< meshDS->ShapeToIndex( outFace ));
} else {
inFace = TopoDS::Face( shape2ShapeMap( outFace, /*isOut=*/true ));
}
// Find matching nodes of in and out faces
ProjectionUtils::TNodeNodeMap nodeIn2OutMap;
if ( ! ProjectionUtils::FindMatchingNodesOnFaces( inFace, &aMesh, outFace, &aMesh,
shape2ShapeMap, nodeIn2OutMap ))
return error(COMPERR_BAD_INPUT_MESH,SMESH_Comment("Mesh on faces #")
<< meshDS->ShapeToIndex( outFace ) << " and "
<< meshDS->ShapeToIndex( inFace ) << " seems different" );
// Create volumes
SMDS_ElemIteratorPtr faceIt = meshDS->MeshElements( inFace )->GetElements();
while ( faceIt->more() ) // loop on faces on inFace
{
const SMDS_MeshElement* face = faceIt->next();
if ( !face || face->GetType() != SMDSAbs_Face )
continue;
int nbNodes = face->NbNodes();
if ( face->IsQuadratic() )
nbNodes /= 2;
// find node columns for each node
vector< const TNodeColumn* > columns( nbNodes );
for ( int i = 0; i < nbNodes; ++i )
{
const SMDS_MeshNode* nIn = face->GetNode( i );
TNode2ColumnMap::iterator n_col = node2columnMap.find( nIn );
if ( n_col != node2columnMap.end() ) {
columns[ i ] = & n_col->second;
}
else {
TNodeNodeMap::iterator nInOut = nodeIn2OutMap.find( nIn );
if ( nInOut == nodeIn2OutMap.end() )
RETURN_BAD_RESULT("No matching node for "<< nIn->GetID() <<
" in face "<< face->GetID());
columns[ i ] = makeNodeColumn( node2columnMap, nIn, nInOut->second );
}
}
StdMeshers_Prism_3D::AddPrisms( columns, myHelper );
}
} // loop on faces of out shell
return true;
}
bool StdMeshers_RadialPrism_3D::Compute(SMESH_Mesh& aMesh, const TopoDS_Shape& aShape)
{
TopExp_Explorer exp;
SMESHDS_Mesh * meshDS = aMesh.GetMeshDS();
myHelper = new SMESH_MesherHelper( aMesh );
myHelper->IsQuadraticSubMesh( aShape );
// to delete helper at exit from Compute()
std::auto_ptr<SMESH_MesherHelper> helperDeleter( myHelper );
// get 2 shells
TopoDS_Solid solid = TopoDS::Solid( aShape );
TopoDS_Shell outerShell = BRepClass3d::OuterShell( solid );
TopoDS_Shape innerShell;
int nbShells = 0;
for ( TopoDS_Iterator It (solid); It.More(); It.Next(), ++nbShells )
if ( !outerShell.IsSame( It.Value() ))
innerShell = It.Value();
if ( nbShells != 2 )
return error(COMPERR_BAD_SHAPE, SMESH_Comment("Must be 2 shells but not ")<<nbShells);
// ----------------------------------
// Associate subshapes of the shells
// ----------------------------------
TAssocTool::TShapeShapeMap shape2ShapeMap;
if ( !TAssocTool::FindSubShapeAssociation( outerShell, &aMesh,
innerShell, &aMesh,
shape2ShapeMap) )
return error(COMPERR_BAD_SHAPE,"Topology of inner and outer shells seems different" );
// ------------------
// Make mesh
// ------------------
TNode2ColumnMap node2columnMap;
myLayerPositions.clear();
for ( exp.Init( outerShell, TopAbs_FACE ); exp.More(); exp.Next() )
{
// Corresponding subshapes
TopoDS_Face outFace = TopoDS::Face( exp.Current() );
TopoDS_Face inFace;
if ( !shape2ShapeMap.IsBound( outFace )) {
return error(SMESH_Comment("Corresponding inner face not found for face #" )
<< meshDS->ShapeToIndex( outFace ));
} else {
inFace = TopoDS::Face( shape2ShapeMap( outFace ));
}
// Find matching nodes of in and out faces
TNodeNodeMap nodeIn2OutMap;
if ( ! TAssocTool::FindMatchingNodesOnFaces( inFace, &aMesh, outFace, &aMesh,
shape2ShapeMap, nodeIn2OutMap ))
return error(COMPERR_BAD_INPUT_MESH,SMESH_Comment("Mesh on faces #")
<< meshDS->ShapeToIndex( outFace ) << " and "
<< meshDS->ShapeToIndex( inFace ) << " seems different" );
// Create volumes
SMDS_ElemIteratorPtr faceIt = meshDS->MeshElements( inFace )->GetElements();
while ( faceIt->more() ) // loop on faces on inFace
{
const SMDS_MeshElement* face = faceIt->next();
if ( !face || face->GetType() != SMDSAbs_Face )
continue;
int nbNodes = face->NbNodes();
if ( face->IsQuadratic() )
nbNodes /= 2;
// find node columns for each node
vector< const TNodeColumn* > columns( nbNodes );
for ( int i = 0; i < nbNodes; ++i )
{
const SMDS_MeshNode* nIn = face->GetNode( i );
TNode2ColumnMap::iterator n_col = node2columnMap.find( nIn );
if ( n_col != node2columnMap.end() ) {
columns[ i ] = & n_col->second;
}
else {
TNodeNodeMap::iterator nInOut = nodeIn2OutMap.find( nIn );
if ( nInOut == nodeIn2OutMap.end() )
RETURN_BAD_RESULT("No matching node for "<< nIn->GetID() <<
" in face "<< face->GetID());
columns[ i ] = makeNodeColumn( node2columnMap, nIn, nInOut->second );
}
}
StdMeshers_Prism_3D::AddPrisms( columns, myHelper );
}
} // loop on faces of out 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;
}
StdMeshers_FaceSide::StdMeshers_FaceSide(const TopoDS_Face& theFace,
list<TopoDS_Edge>& theEdges,
SMESH_Mesh* theMesh,
const bool theIsForward,
const bool theIgnoreMediumNodes)
{
int nbEdges = theEdges.size();
myEdge.resize( nbEdges );
myC2d.resize( nbEdges );
myFirst.resize( nbEdges );
myLast.resize( nbEdges );
myNormPar.resize( nbEdges );
myLength = 0;
myNbPonits = myNbSegments = 0;
myMesh = theMesh;
myMissingVertexNodes = false;
myIgnoreMediumNodes = theIgnoreMediumNodes;
if ( nbEdges == 0 ) return;
SMESHDS_Mesh* meshDS = theMesh->GetMeshDS();
vector<double> len( nbEdges );
int nbDegen = 0;
list<TopoDS_Edge>::iterator edge = theEdges.begin();
for ( int index = 0; edge != theEdges.end(); ++index, ++edge )
{
int i = theIsForward ? index : nbEdges - index - 1;
len[i] = SMESH_Algo::EdgeLength( *edge );
if ( len[i] < DBL_MIN ) nbDegen++;
myLength += len[i];
myEdge[i] = *edge;
if ( !theIsForward ) myEdge[i].Reverse();
if ( theFace.IsNull() )
BRep_Tool::Range( *edge, myFirst[i], myLast[i] );
else
myC2d[i] = BRep_Tool::CurveOnSurface( *edge, theFace, myFirst[i], myLast[i] );
if ( myEdge[i].Orientation() == TopAbs_REVERSED )
std::swap( myFirst[i], myLast[i] );
if ( SMESHDS_SubMesh* sm = meshDS->MeshElements( *edge )) {
int nbN = sm->NbNodes();
if ( theIgnoreMediumNodes ) {
SMDS_ElemIteratorPtr elemIt = sm->GetElements();
if ( elemIt->more() && elemIt->next()->IsQuadratic() )
nbN -= sm->NbElements();
}
myNbPonits += nbN;
myNbSegments += sm->NbElements();
}
if ( SMESH_Algo::VertexNode( TopExp::FirstVertex( *edge, 1), meshDS ))
myNbPonits += 1; // for the first end
else
myMissingVertexNodes = true;
}
if ( SMESH_Algo::VertexNode( TopExp::LastVertex( theEdges.back(), 1), meshDS ))
myNbPonits++; // for the last end
else
myMissingVertexNodes = true;
if ( nbEdges > 1 && myLength > DBL_MIN ) {
const double degenNormLen = 1.e-5;
double totLength = myLength;
if ( nbDegen )
totLength += myLength * degenNormLen * nbDegen;
double prevNormPar = 0;
for ( int i = 0; i < nbEdges; ++i ) {
if ( len[ i ] < DBL_MIN )
len[ i ] = myLength * degenNormLen;
myNormPar[ i ] = prevNormPar + len[i]/totLength;
prevNormPar = myNormPar[ i ];
}
}
myNormPar[nbEdges-1] = 1.;
//dump();
}
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 );
}