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Quadrilateral meshes with provable angle bounds

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Abstract

In this paper, we present an algorithm that utilizes a quadtree data structure to construct a quadrilateral mesh for a simple polygonal region in which no newly created angle is smaller than \({{18.43}}^{\circ} ({=}\hbox{arctan}(\frac{1}{3}))\) or greater than \({{171.86}}^{\circ} ({=}{{135}}^{\circ} + 2\hbox{arctan}(\frac{1}{3}))\). This is the first known result, to the best of our knowledge, on a direct quadrilateral mesh generation algorithm with a provable guarantee on the angles.

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Acknowledgments

The authors would like to thank anonymous reviewers for helpful comments that served to significantly improve the presentation in the paper.

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Correspondence to Suneeta Ramaswami.

Additional information

An extended abstract was presented at the 17th IMR [2]. A video and short paper based on this paper was presented at the 25th SoCG [13].

Suneeta Ramaswami’s research was partially supported by NSF CCF 0830589.

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Atalay, F.B., Ramaswami, S. & Xu, D. Quadrilateral meshes with provable angle bounds. Engineering with Computers 28, 31–56 (2012). https://doi.org/10.1007/s00366-011-0215-0

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