This is a photo I took from the Louvre guide book. We didn't take many photos inside the Louvre.
(Giotto di Bondone, c. 1300: Saint Francis of Assisi Receiving the Stigmata)

Note the interesting use of lines to indicate Jesus beaming stigmata down to St. Francis. Unfortunately, a similar, and much more interesting, painting didn't make it into the guide book, but imagine if you will: Aphrodite hovering over 6 "lovers from history" (Lancelot, Paris of Troy, Troilus, etc.) and shooting identical beams *from her crotch*. The painting was called something like "Aphrodite Conquers the Fabled Lovers."