Graphics Reference
In-Depth Information
Fig. 1.1
On
left
, Piero Della Francesca, Brera Altarpiece 1472-1474, an early example of linear
perspective in an Italian Proto-Renaissance painting. On
right
, Paolo Uccello, Chalice 1450,
possibly the fi rst example of a type of graphic representation of structure later known as “wireframe ”
(Both images copyright free, in the public domain)
Fig. 1.2
Focal shift causes distortion, as seen on the
left
, because as the eyes move away from
a center point, the disparity between the rotation angles of each eye increases. On the
right
, undis-
torted perspective guidelines are drawn within the
cone of vision
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