public void Execute(VVert v0, VVert v1, Op op)
{
if (op == Op.Restart)
{
m_Selection.Clear();
op = Op.Add;
}
if (op == Op.Add)
{
m_Selection.AddVVert(v0);
m_Selection.AddVVert(v1);
}
else
{
m_Selection.DelVVert(v0);
m_Selection.DelVVert(v1);
}
m_EdgeSet.Add(v0.GetVEdge(v1));
_WalkSelect(v0, v1, op);
_WalkSelect(v1, v0, op);
m_EdgeSet.Clear();
}