These paintings were a source for Piero della Francesca's cycle on the same subject, painted in Arezzo in the middle of the following century, though Gaddi, with happy disregard for realism in scale, hardly anticipates the rigorous perspective and complex geometry of Piero's work, not to mention its cold, clear atmosphere or the figures' graceful stillness.
WSJ: A Heavenly View From On High | Basilica of Santa Croce | Agnolo Gaddi | By Francis X. Rocca