PICTORIAL EFFECTS OF PERSPECTIVE
lines Parallel to the Picture Plane
If parallel with the picture plane (PP), a se of
t
parallel lines will retain its orientation and not
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converge to avanishing point. Each line in the
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set, however, will diminish in size according to
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t'i~ret~t' 1 ~~~ .... .....
its distance from the observer.
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a~ ' • In asimilar manner, shapes parallel with PP will
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retain their form but diminish in size according
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to their distancefrom the observer.
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lines Perpendicular to the Picture Plane
...... If perpendicular to the picture plane (PP), a set
of parallel lines will appear to converge onthe
horizon line (HL) at the center of vision (C) .
.....
.;·
lines Oblique to the Picture Plane
• If oblique t othe picture plane (PP), aset of
parallel lines will appe to converge toward
ar
a common vanishing point as it recedes.
..,_ ~------- If ahorizontal set of parallel lines is oblique to
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· _ .. . .
· ......
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PP, its vanishing point will always lie somewhere
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on the horizon line (HL) .
If a set of parallel lines rises upward as it
recedes. its vanishing point lies above HL.If it
slopes downward as it recedes, its vanishing
point lies below HL.
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PERSPECTIVE DRAWINGS/ 93