Visibility of disjoint polygons

Visibility of disjoint polygons
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不相交多边形的可见性

DOI:
10.1007/bf01840436
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发表时间:
2005
期刊:
影响因子:
1.1
通讯作者:
H. Imai
H. Imai
中科院分区:
计算机科学4区
文献类型:
--
作者:
Takao Asano;T. Asano;L. Guibas;J. Hershberger;H. Imai

文献摘要

被引文献

相似文献

考虑包含总边缘的平面中的不连接多边形的集合。我们展示了如何构建,INO(N2)时间和空间,这是一个数据结构,我们可以从该数据结构中计算出相对于多边形收集的给定点的可见性多边形。作为该结构的应用,可以构造给定多边形的可见性图INO(N2)时间和空间。这意味着连接平面两个点并避免多边形的最短路径可以计算为Ino(N2)时间,从而改善了较早的(N2 logn)结果。
Consider a collection of disjoint polygons in the plane containing a total ofn edges. We show how to build, inO(n2) time and space, a data structure from which inO(n) time we can compute the visibility polygon of a given point with respect to the polygon collection. As an application of this structure, the visibility graph of the given polygons can be constructed inO(n2) time and space. This implies that the shortest path that connects two points in the plane and avoids the polygons in our collection can be computed inO(n2) time, improving earlierO(n2 logn) results.