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Exact arrangements on tori and Dupin cyclides

Content Provider	ACM Digital Library
Author	Kerber, Michael Berberich, Eric
Abstract	An algorithm and implementation is presented to compute the exact arrangement induced by arbitrary algebraic surfaces on a parametrized ring dupin cyclide. The family of dupin cyclides contains as a special case the torus. The intersection of an algebraic surface of degree n with a reference cyclide is represented as a real algebraic curve of bi-degree (2n, 2n) in the two-dimensional parameter space of the cyclide. We use eigenwillig and kerber: "exact and efficient 2D-Arrangements of arbitrary algebraic Curves", SODA 2008, to compute a planar arrangement of such curves and extend their approach to obtain more asymptotic information about curves approaching the boundary of the cyclide's parameter space. With that, we can base our implementation on the general software framework by berberich et. al.: "sweeping and maintaining two-dimensional arrangements on surfaces: A first Step", ESA 2007. Our contribution provides the demanded techniques to model the special geometry of surfaces intersecting a cyclide and the special topology of the reference surface of genus one. The contained implementation is complete and does not assume generic position. Our experiments show that the combinatorial overhead of the framework does not harm the efficiency of the method. Our experiments show that the overall performance is strongly coupled to the efficiency of the implementation for arrangements of algebraic plane curves.
Starting Page	59
Ending Page	66
Page Count	8
File Format	PDF
ISBN	9781605581064
DOI	10.1145/1364901.1364912
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2008-06-02
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Exact geometric computation Torus Arrangements Surfaces Dupin ring cyclide Robustness Generic programming Cgal
Content Type	Text
Resource Type	Article

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