Embedding Vertices at Points: Few Bends Suffice for Planar Graphs

Michael Kaufmann, Roland Wiese
2002 Journal of Graph Algorithms and Applications  
The existing literature gives efficient algorithms for mapping trees or less restrictively outerplanar graphs on a given set of points in a plane, so that the edges are drawn planar and as straight lines. We relax the latter requirement and allow very few bends on each edge while considering general plane graphs. Our results show two algorithms for mapping four-connected plane graphs with at most one bend per edge and for mapping general plane graphs with at most two bends per edge. Furthermore
more » ... we give a point set, where for arbitrary plane graphs it is NP-complete to decide whether there is an mapping such that each edge has at most one bend.
doi:10.7155/jgaa.00046 fatcat:na25cjehenggzoi5exiboiom2a