public void B2bFix(HullTriangle s, HullTriangle t)
{
for (int i = 0; i < 3; i++)
{
int i1 = (i + 1) % 3;
int i2 = (i + 2) % 3;
int a = s.At(i1);
int b = s.At(i2);
Debug.Assert(m_tris[s.Neib(a, b)].Neib(b, a) == s.id);
Debug.Assert(m_tris[t.Neib(a, b)].Neib(b, a) == t.id);
m_tris[s.Neib(a, b)].Neib(b, a, t.Neib(b, a));
m_tris[t.Neib(b, a)].Neib(a, b, s.Neib(a, b));
}
}
