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Visibility polygon
In
computational geometry
, the
visibility polygon
or
visibility region
for a point
p
in the plane among obstacles is the possibly unbounded
polygonal region
of all points of the plane
visible
from
p
. The visibility polygon can also be defined for visibility from a segment, or a polygon. Visibility polygons are useful in
robotics
,
video games
, and in determining positions to
locate facilities
, such as
the best placement of security guards in an art gallery
.
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