private Triangle NextFlipTriangle(SweepContext tcx, Winding o, Triangle t, Triangle ot, TriPoint p, TriPoint op)
{
int edge_index;
if (o == Winding.CCW)
{
// ot is not crossing edge after flip
edge_index = ot.EdgeIndex(p, op);
ot.DelaunayEdge[edge_index] = true;
Legalize(tcx, ot);
ot.ClearDelaunayEdges();
return(t);
}
// t is not crossing edge after flip
edge_index = t.EdgeIndex(p, op);
t.DelaunayEdge[edge_index] = true;
Legalize(tcx, t);
t.ClearDelaunayEdges();
return(ot);
}