public void ExpandToFit(Bounds_d other)
{
ConformTo(Vector3_d.Min(_min, other.min), Vector3_d.Max(_max, other.max));
}
public void ConformTo(Vector3_d v0, Vector3_d v1)
{
_center = (v0 + v1) / 2.0;
size = Vector3_d.Max(v0, v1) - Vector3_d.Min(v0, v1);
}