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Convex Grid Drawings of Planar Graphs with Constant Edge-...
Michael A. Bekos, Martin Gronemann, Fabrizio Montecchiani, Anton · 2022-04-29 · via cs.DS updates on arXiv.org

We continue the study of the area requirement of convex straight-line grid drawings of 3-connected plane graphs, which has been intensively investigated in the last decades. Motivated by applications, such as graph editors, we additionally require the obtained drawings to have bounded edge-vertex resolution, that is, the closest distance between a vertex and any non-incident edge is lower bounded by a constant that does not depend on the size of the graph. We present a drawing algorithm that takes as input a 3-connected plane graph with n vertices and f internal faces and computes a convex straight-line drawing with edge-vertex resolution at least 1/2 on an integer grid of size (n-2+a)x(n-2+a), where a=min{n-3,f}. Our result improves the previously best-known area bound of (3n-7)x(3n-7)/2 by Chrobak, Goodrich and Tamassia.