How does a Smite attack spread across the hit grid when some points are already wounded?

Question

Accepted Answer

Its secondary and tertiary lines each start from the first hit and run independently. Each skips wounded points and resolves at the first unwounded point or armour cube, and critical damage is added after the normal wounds.

Arydia: The Paths We Dare Tread

How does a Smite attack spread across the hit grid when some points are already wounded?