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Convexifying Monotone Polygons

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Algorithms and Computation (ISAAC 1999)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 1741))

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Abstract

This paper considers reconfigurations of polygons, where each polygon edge is a rigid link, no two of which can cross during the motion. We prove that one can reconfigure any monotone polygon into a convex polygon; a polygon is monotone if any vertical line intersects the interior at a (possibly empty) interval. Our algorithm computes in O(n 2) time a sequence of O(n 2) moves, each of which rotates just four joints at once.

Research performed during a post-doctoral position at McGill University.

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References

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© 1999 Springer-Verlag Berlin Heidelberg

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Biedl, T.C., Demaine, E.D., Lazard, S., Robbins, S.M., Soss, M.A. (1999). Convexifying Monotone Polygons. In: Algorithms and Computation. ISAAC 1999. Lecture Notes in Computer Science, vol 1741. Springer, Berlin, Heidelberg. https://doi.org/10.1007/3-540-46632-0_42

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  • DOI: https://doi.org/10.1007/3-540-46632-0_42

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-540-66916-6

  • Online ISBN: 978-3-540-46632-1

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