Drawing planar 3-trees with given face-areas

  • Authors:
  • Therese Biedl;Lesvia Elena Ruiz Velázquez

  • Affiliations:
  • David R. Cheriton School of Computer Science, University of Waterloo, Waterloo, ON, Canada;David R. Cheriton School of Computer Science, University of Waterloo, Waterloo, ON, Canada

  • Venue:
  • GD'09 Proceedings of the 17th international conference on Graph Drawing
  • Year:
  • 2009

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Abstract

We study straight-line drawings of planar graphs such that each interior face has a prescribed area. It was known that such drawings exist for all planar graphs with maximum degree 3. We show here that such drawings exist for all planar partial 3-trees, i.e., subgraphs of a triangulated planar graph obtained by repeatedly inserting a vertex in one triangle and connecting it to all vertices of the triangle. Moreover, vertices have rational coordinates if the face-areas are rational, and we can bound the resolution. We also give some negative results for other graph classes.