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DOI: 10.4230/LIPIcs.SoCG.2017.17

Reachability in a Planar Subdivision with Direction Constraints

Authors: Daniel Binham, Pedro Machado Manhaes de Castro, and Antoine Vigneron

Published in: LIPIcs, Volume 77, 33rd International Symposium on Computational Geometry (SoCG 2017)

Abstract

Given a planar subdivision with n vertices, each face having a cone of possible directions of travel, our goal is to decide which vertices of the subdivision can be reached from a given starting point s. We give an O(n log n)-time algorithm for this problem, as well as an Omega(n log n) lower bound in the algebraic computation tree model. We prove that the generalization where two cones of directions per face are allowed is NP-hard.

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Daniel Binham, Pedro Machado Manhaes de Castro, and Antoine Vigneron. Reachability in a Planar Subdivision with Direction Constraints. In 33rd International Symposium on Computational Geometry (SoCG 2017). Leibniz International Proceedings in Informatics (LIPIcs), Volume 77, pp. 17:1-17:15, Schloss Dagstuhl – Leibniz-Zentrum für Informatik (2017)

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@InProceedings{binham_et_al:LIPIcs.SoCG.2017.17,
  author =	{Binham, Daniel and Manhaes de Castro, Pedro Machado and Vigneron, Antoine},
  title =	{{Reachability in a Planar Subdivision with Direction Constraints}},
  booktitle =	{33rd International Symposium on Computational Geometry (SoCG 2017)},
  pages =	{17:1--17:15},
  series =	{Leibniz International Proceedings in Informatics (LIPIcs)},
  ISBN =	{978-3-95977-038-5},
  ISSN =	{1868-8969},
  year =	{2017},
  volume =	{77},
  editor =	{Aronov, Boris and Katz, Matthew J.},
  publisher =	{Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.SoCG.2017.17},
  URN =		{urn:nbn:de:0030-drops-72022},
  doi =		{10.4230/LIPIcs.SoCG.2017.17},
  annote =	{Keywords: Design and analysis of geometric algorithms, Path planning, Reachability}
}

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Documents authored by Manhaes de Castro, Pedro Machado

Reachability in a Planar Subdivision with Direction Constraints

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