## Computer Graphics

Question: Distinguish between the following:

(i) Cavalier vs. cabinet projections

(ii) 2-D clipping vs. 3-D clipping

CAVALIER VS CABINET
Cavalier Projections Cabinet Projections
1) The direction of projection makes an angle of 45 degrees with the view plane. 1) The direction of projection makes an angle of 63.4 degrees with the view plane.
2) The projection of a line perpendicular to viewing surface has the same length as the line. 2) Lines perpendicular to the viewing
surface are projected at one-half their actual length.
3) A cavalier projection is obtained when the angle between oblique and the plane of projection is 45 degrees. 3) A cabinet projection is obtained when the angle between oblique and the plane of projection is cot-1(1/2)
4) The foreshortening factors for all three principal axes are equal. 4) An oblique projection, for which
the foreshortening factor for edges perpendicular to the plane of projection is one-half, is obtained.
5) The resulting figure appears too thick. 5) The resulting figure is not very thick.