Giotto
linear perspective :)
visual
trompe l'oeil
trompe l'oeil
Surface area!
The illusion of depth on a flat surface.
It is the Trajectory.
the average of the projected surface areas
linear perspective :)
chiaroscuro
perspective and color
Three types of projection include planar (the globe is projected onto a flat sheet, with only one point of the globe touching the surface), cylindrical (the globe is projected onto a cylinder with the all points along a great circle touching the surface), or conical (the globe is projected onto a cone with two lines of parallel touching the reference surface).
It is called perspective.
light and shadow
A technique in which two or more vanishing points are used to create the illusion of depth on a flat surface..
trompe l'oeil
They don't, they just appear to...an optical illusion.