Assertion: visibility polygon | /r/HasProperty | the set of points
Facets:
value: in r
type: LOCATION
Source sentences:
text: Then, the point visibility polygon V {\displaystyle V} is the set of points in R 2 {\displaystyle \mathbb {R} ^{2}} , such that for every point q {\displaystyle q} in V {\displaystyle V} , the segment p q {\displaystyle pq} does not intersect any obstacle in S {\displaystyle S} .