Hex rectangular wraparound

 from Red Blob Games
07 May 2018

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Endnotes

  1. [1]: https://www.redblobgames.com/grids/hexagons/#range-coordinate
  2. [2]: http://web.archive.org/web/20070218123226/http://sc.tri-bit.com/Hex_Grids
  3. [3]: http://ondras.github.io/rot.js/manual/#hex/indexing