For every integer l, we construct a cubic 3-vertex-connected planar bipartite graph G with O(l^3) vertices such that there is no planar straight-line drawing of G whose vertices all lie on l lines. This strengthens previous results on graphs that cannot be drawn on few lines, which constructed significantly larger maximal planar graphs. We also find apex-trees and cubic bipartite series-parallel graphs that cannot be drawn on a bounded number of lines.
@InProceedings{eppstein:LIPIcs.SoCG.2019.32, author = {Eppstein, David}, title = {{Cubic Planar Graphs That Cannot Be Drawn On Few Lines}}, booktitle = {35th International Symposium on Computational Geometry (SoCG 2019)}, pages = {32:1--32:15}, series = {Leibniz International Proceedings in Informatics (LIPIcs)}, ISBN = {978-3-95977-104-7}, ISSN = {1868-8969}, year = {2019}, volume = {129}, editor = {Barequet, Gill and Wang, Yusu}, publisher = {Schloss Dagstuhl -- Leibniz-Zentrum f{\"u}r Informatik}, address = {Dagstuhl, Germany}, URL = {https://drops.dagstuhl.de/entities/document/10.4230/LIPIcs.SoCG.2019.32}, URN = {urn:nbn:de:0030-drops-104363}, doi = {10.4230/LIPIcs.SoCG.2019.32}, annote = {Keywords: graph drawing, universal point sets, collinearity} }
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