Drawing Partially Embedded and Simultaneously Planar Graphs
Abstract
We investigate the problem of constructing planar drawings with few bends for two related problems, the partially embedded graph problem---to extend a straight-line planar drawing of a subgraph to a planar drawing of the whole graph---and the simultaneous planarity problem---to find planar drawings of two graphs that coincide on shared vertices and edges. In both cases we show that if the required planar drawings exist, then there are planar drawings with a linear number of bends per edge and, in the case of simultaneous planarity, a constant number of crossings between every pair of edges. Our proofs provide efficient algorithms if the combinatorial embedding of the drawing is given. Our result on partially embedded graph drawing generalizes a classic result by Pach and Wenger which shows that any planar graph can be drawn with a linear number of bends per edge if the location of each vertex is fixed.
Cite
@article{arxiv.1410.8205,
title = {Drawing Partially Embedded and Simultaneously Planar Graphs},
author = {Timothy M. Chan and Fabrizio Frati and Carsten Gutwenger and Anna Lubiw and Petra Mutzel and Marcus Schaefer},
journal= {arXiv preprint arXiv:1410.8205},
year = {2014}
}
Comments
Preliminary version appeared at the 22nd International Symposium on Graph Drawing (GD '14)