private void FinalizationPolygon(SweepContext tcx)
{
// Get an Internal triangle to start with
Triangle t = tcx.Front._head.Next.Triangle;
TriPoint p = tcx.Front._head.Next.Point;
while (!t.GetConstrainedEdgeCW(p))
{
t = t.NeighborCCW(p);
}
tcx.MeshClean(t);
}
