void KantShelling::UpdateSepf1(IntList &NewSepFaces)
// for all f \in NewxSepFaces, for all v incident
// to f, sepf[v]++.
{tbrin b, b0;
int f;
NewSepFaces.ToHead();
while ((f=~NewSepFaces)!=0)
{b0=b=Face2Brin[f];
do
{if(IsOuterV[G.vin[b]()]) _sepf(G.vin[b](),1);
b=G.cir[-b];
}
while (b!=b0);
++NewSepFaces;
}
}
void KantShelling::UpdateSepf2(IntList &NewOuterVertices)
// for all v \in NewOuterVertices, recalculate sepf[v].
{tbrin b, b0;
int f;
NewOuterVertices.ToHead();
int vi, count;
while ((vi=~NewOuterVertices)!=0)
{count=0;
b0=b=G.FirstBrin(vi);
do
{f=Brin2Face[b];
if(!MarkedF[f] && (outv[f]>=3 || (outv[f]==2 && oute[f]==0)))
count++;
b=G.cir[b];
}
while (b!=b0);
_sepf(vi,count-sepf[vi]);
++NewOuterVertices;
}
}