public void Tag(PoseBoneMatrix last)
{
if (last == null)
tag = PoseBoneMatrix.changetag.All;
else
{
tag = PoseBoneMatrix.changetag.NoChange;
if (r != last.r)
{
tag |= PoseBoneMatrix.changetag.Rotate;
}
if (t != last.t)
{
tag |= PoseBoneMatrix.changetag.Trans;
}
if (s != last.s)
{
tag |= PoseBoneMatrix.changetag.Scale;
}
}
}