The late Middle Ages saw many more frescoes and panel paintings survive, and tell stories in greater detail.
Giotto
I have several times written that early western painting, until the late Renaissance, not uncommonly incorporated multiple copies […]
The first few years of his short career, in which he modelled faces and clothes to bring volume, and started perspective projection.
When we sketch, draw, or paint we accomplish the small miracle of depicting a three-dimensional motif on our two-dimensional ground. This first article considers the cues for visual depth.
The Eclectic Light Company 