English

Point-Location in The Arrangement of Curves

Computational Geometry 2020-12-07 v2

Abstract

An arrangement of nn curves in the plane is given. The query is a point qq and the goal is to find the face of the arrangement that contains qq. A data-structure for point-location, preprocesses the curves into a data structure of polynomial size in nn, such that the queries can be answered in time polylogarithmic in nn. We design a data structure for solving the point location problem queries in O(logC(n)+logS(n))O(\log C(n)+\log S(n)) time using O(T(n)+S(n)log(S(n)))O(T(n)+S(n)\log(S(n))) preprocessing time, if a polygonal subdivision of total size S(n)S(n), with cell complexity at most C(n)C(n) can be computed in time T(n)T(n), such that the order of the parts of the curves inside each cell has a monotone order with respect to at least one segment of the boundary of the cell. We call such a partitioning a curve-monotone polygonal subdivision.

Keywords

Cite

@article{arxiv.2007.11451,
  title  = {Point-Location in The Arrangement of Curves},
  author = {Sepideh Aghamolaei and Mohammad Ghodsi},
  journal= {arXiv preprint arXiv:2007.11451},
  year   = {2020}
}