English

Drawing outer-1-planar graphs revisited

Computational Geometry 2020-09-22 v2

Abstract

In a recent article (Auer et al, Algorithmica 2016) it was claimed that every outer-1-planar graph has a planar visibility representation of area O(nlogn)O(n\log n). In this paper, we show that this is wrong: There are outer-1-planar graphs that require Ω(n2)\Omega(n^2) area in any planar drawing. Then wegive a construction (using crossings, but preserving a given outer-1-planar embedding) that results in an orthogonal box-drawing with O(n log n) area and at most two bends per edge.

Keywords

Cite

@article{arxiv.2009.07106,
  title  = {Drawing outer-1-planar graphs revisited},
  author = {Therese Biedl},
  journal= {arXiv preprint arXiv:2009.07106},
  year   = {2020}
}
R2 v1 2026-06-23T18:33:31.371Z