Wouldn't that be the 3D distance between the shadow and the plane? https://i.imgur.com/HWA1iZu.png https://i.imgur.com/HWA1iZu.png Edit: nope you're totally r

Wouldn't that be the 3D distance between the shadow and the plane? https://i.imgur.com/HWA1iZu.png https://i.imgur.com/HWA1iZu.png Edit: nope you're totally right. Brain fart. It's toa, not soa.