Oblique Projections, Continued
Cavalier projections are oblique projections where the front axes are always
perpendicular to each other and the receding axis is drawn at any angle other
than 90°. When the receding axis is drawn at an angle of 45° with the plane
of projection, all edges are projected their true length. For this reason, most
cavalier drawings use the 45° angle. Cavalier projections originated in the
drawings of medieval fortifications and were made on the horizontal planes
of projection. The central portions of these fortifications were higher than
the rest and were called cavalier because of their commanding position.
Figure 6-5 shows an oblique projection of a bookshelf drawn in full scale
with the receding axis at a 45° angle to the horizontal.
Figure 6-5.A cavalier projection.
Continued on next page