void backgroundMesh2D::updateSizes()
{
DoubleStorageType::iterator itv = sizeField.begin();
for ( ; itv != sizeField.end(); ++itv) {
SPoint2 p;
MVertex *v = _2Dto3D[itv->first];
double lc;
if (v->onWhat()->dim() == 0) {
lc = sizeFactor * BGM_MeshSize(v->onWhat(), 0,0,v->x(),v->y(),v->z());
}
else if (v->onWhat()->dim() == 1) {
double u;
v->getParameter(0, u);
lc = sizeFactor * BGM_MeshSize(v->onWhat(), u, 0, v->x(), v->y(), v->z());
}
else {
GFace *face = dynamic_cast<GFace*>(gf);
if(!face) {
Msg::Error("Entity is not a face in background mesh");
return;
}
reparamMeshVertexOnFace(v, face, p);
lc = sizeFactor * BGM_MeshSize(face, p.x(), p.y(), v->x(), v->y(), v->z());
}
// printf("2D -- %g %g 3D -- %g %g\n",p.x(),p.y(),v->x(),v->y());
itv->second = min(lc,itv->second);
itv->second = max(itv->second, sizeFactor * CTX::instance()->mesh.lcMin);
itv->second = min(itv->second, sizeFactor * CTX::instance()->mesh.lcMax);
}
// do not allow large variations in the size field
// (Int. J. Numer. Meth. Engng. 43, 1143-1165 (1998) MESH GRADATION
// CONTROL, BOROUCHAKI, HECHT, FREY)
std::set<MEdge,Less_Edge> edges;
for (unsigned int i = 0; i < getNumMeshElements(); i++) {
for (int j = 0; j < getElement(i)->getNumEdges(); j++) {
edges.insert(getElement(i)->getEdge(j));
}
}
const double _beta = 1.3;
for (int i=0; i<0; i++) {
std::set<MEdge,Less_Edge>::iterator it = edges.begin();
for ( ; it != edges.end(); ++it) {
MVertex *v0 = it->getVertex(0);
MVertex *v1 = it->getVertex(1);
MVertex *V0 = _2Dto3D[v0];
MVertex *V1 = _2Dto3D[v1];
DoubleStorageType::iterator s0 = sizeField.find(V0);
DoubleStorageType::iterator s1 = sizeField.find(V1);
if (s0->second < s1->second)s1->second = min(s1->second,_beta*s0->second);
else s0->second = min(s0->second,_beta*s1->second);
}
}
}
int solveInvalidPeriodic(GFace *gf, BDS_Mesh &m,
std::map<BDS_Point*, MVertex*,PointLessThan> *recoverMap)
{
std::set<BDS_Edge*> toSplit;
invalidEdgesPeriodic(m, recoverMap, toSplit);
std::set<BDS_Edge*>::iterator ite = toSplit.begin();
for (;ite !=toSplit.end(); ++ite){
BDS_Edge *e = *ite;
if (!e->deleted && e->numfaces() == 2){
const double coord = 0.5;
BDS_Point *mid ;
mid = m.add_point(++m.MAXPOINTNUMBER,
coord * e->p1->u + (1 - coord) * e->p2->u,
coord * e->p1->v + (1 - coord) * e->p2->v, gf);
mid->lcBGM() = BGM_MeshSize(gf,
(coord * e->p1->u + (1 - coord) * e->p2->u) * m.scalingU,
(coord * e->p1->v + (1 - coord) * e->p2->v) * m.scalingV,
mid->X, mid->Y, mid->Z);
mid->lc() = 0.5 * (e->p1->lc() + e->p2->lc());
if(!m.split_edge(e, mid)) m.del_point(mid);
}
}
int nb_smooth;
if(toSplit.size()) smoothVertexPass(gf, m, nb_smooth, true);
m.cleanup();
return toSplit.size();
}
static double F_Lc(GEdge *ge, double t)
{
GPoint p = ge->point(t);
double lc_here;
Range<double> bounds = ge->parBounds(0);
double t_begin = bounds.low();
double t_end = bounds.high();
if(t == t_begin)
lc_here = BGM_MeshSize(ge->getBeginVertex(), t, 0, p.x(), p.y(), p.z());
else if(t == t_end)
lc_here = BGM_MeshSize(ge->getEndVertex(), t, 0, p.x(), p.y(), p.z());
else
lc_here = BGM_MeshSize(ge, t, 0, p.x(), p.y(), p.z());
SVector3 der = ge->firstDer(t);
const double d = norm(der);
return d / lc_here;
}
void splitEdgePass(GFace *gf, BDS_Mesh &m, double MAXE_, int &nb_split)
{
std::list<BDS_Edge*>::iterator it = m.edges.begin();
std::vector<std::pair<double, BDS_Edge*> > edges;
while (it != m.edges.end()){
if(!(*it)->deleted && (*it)->numfaces() == 2){
double lone = NewGetLc(*it, gf, m.scalingU, m.scalingV);
if(lone > MAXE_){
edges.push_back(std::make_pair(-lone, *it));
}
}
++it;
}
std::sort(edges.begin(), edges.end());
for (unsigned int i = 0; i < edges.size(); ++i){
BDS_Edge *e = edges[i].second;
if (!e->deleted){
const double coord = 0.5;
BDS_Point *mid ;
double U, V;
U = coord * e->p1->u + (1 - coord) * e->p2->u;
V = coord * e->p1->v + (1 - coord) * e->p2->v;
GPoint gpp = gf->point(m.scalingU*U,m.scalingV*V);
if (gpp.succeeded()){
mid = m.add_point(++m.MAXPOINTNUMBER, gpp.x(),gpp.y(),gpp.z());
mid->u = U;
mid->v = V;
if (backgroundMesh::current() && 0){
mid->lc() = mid->lcBGM() =
backgroundMesh::current()->operator()
((coord * e->p1->u + (1 - coord) * e->p2->u)*m.scalingU,
(coord * e->p1->v + (1 - coord) * e->p2->v)*m.scalingV,
0.0);
}
else {
mid->lcBGM() = BGM_MeshSize
(gf,
(coord * e->p1->u + (1 - coord) * e->p2->u)*m.scalingU,
(coord * e->p1->v + (1 - coord) * e->p2->v)*m.scalingV,
mid->X,mid->Y,mid->Z);
mid->lc() = 0.5 * (e->p1->lc() + e->p2->lc());
}
if(!m.split_edge(e, mid)) m.del_point(mid);
else nb_split++;
}
}
}
}