Unformatted text preview: [1D] Foreshortening — Lines Or Surfaces Parallel To The Observer's Faee Show Their Maximum Size.
As They Are Revolved Away From The Observer They Appear increasingly Shorter ’1. For instance, a pencil held parallel 5. This tube or oatmeal box seen end-
to observer’s face will show its true on will appear as a full circle. None of
and maximum length. the sides are visible. (=1 Eli; a. When it is pivoted slightly the cir-
IEEE; 2. As it is slowly pivoted its 13115;}, ole “foreahortenS” and appears as an
'7" ellipse. The sides (which were totally appears smaller . . .
foreshortened) now begin to appear. 7. The ellipse foreshortens even more
(it becomes ﬂatter) While the sides appear longer. Ski“: “ 4. . . . till ﬁnallythe pencil points s..Fine11y,'the circular topforeshort-
directly at observer, and only the end 9115 to a staple straight line and the
is seen. This could be called 100% sides appear at maximum length. foreshortening. ...
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- Fall '08