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arXiv · 2008.10280

Extending Partial Orthogonal Drawings

Patrizio Angelini·Ignaz Rutter·Sandhya T P
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Abstract

We study the planar orthogonal drawing style within the framework of partial representation extension. Let $(G,H,{\Gamma}_H )$ be a partial orthogonal drawing, i.e., G is a graph, $H\subseteq G$ is a subgraph and ${\Gamma}_H$ is a planar orthogonal drawing of H. We show that the existence of an orthogonal drawing ${\Gamma}_G$ of $G$ that extends ${\Gamma}_H$ can be tested in linear time. If such a drawing exists, then there also is one that uses $O(|V(H)|)$ bends per edge. On the other hand, we show that it is NP-complete to find an extension that minimizes the number of bends or has a fixed number of bends per edge.

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Patrizio Angelini, Ignaz Rutter, Sandhya T P. 2020-08-24. Extending Partial Orthogonal Drawings. https://arxiv.org/abs/2008.10280

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