(definition)
Definition: Two points p and q are visible if the straight line segment between them does not intersect any other object, edge, etc.
See also horizontal visibility map, vertical visibility map.
Note:
Visibility is symmetric, that is, if p is visible from q, q is visible from p.
From Algorithms and Theory of Computation Handbook, page 19-27, Copyright © 1999 by CRC Press LLC. Appearing in the Dictionary of Computer Science, Engineering and Technology, Copyright © 2000 CRC Press LLC.
Author: CRC-A
If you have suggestions, corrections, or comments, please get in touch with Paul E. Black.
Entry modified 17 December 2004.
HTML page formatted Fri Mar 25 16:20:35 2011.
Cite this as:
Algorithms and Theory of Computation Handbook, CRC Press LLC, 1999, "visible", in
Dictionary of Algorithms and Data
Structures [online], Paul E. Black, ed.,
U.S. National Institute of
Standards and Technology. 17 December 2004. (accessed TODAY)
Available from: http://www.nist.gov/dads/HTML/visible.html
