REFLECTIONS
Any refiecting planar surface parallel to one of
the three major axes extends the perspective
system of the subject. Therefore, the major sets
of parallel lines in the reflection appear to
converge to the same vanishing points as do the
corresponding sets of lines in the subject.
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When the subject is in front of or above a
reflecting surface, first reflect its distance to
the reflecting surface, then draw its mirror
image. The plane of the reflecting surface
should appear to be halfway between the
subject and its refiected image. For example,
the waterline establishes the horizontal
reflecting plane. Point olies in t his pla ne.
Therefore, oa = oa' and ab= a'b'.
Refiections oflines perpendicular to the
refiecting surface extend the original lines.
PERSPECTIVE ORAW INGS / 123