[postgis-tickets] [PostGIS] #4627: ST_HexagonGrid produces overlapping hexagons

[PostGIS]

#4627: ST_HexagonGrid produces overlapping hexagons
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  Reporter:  dbaston  |      Owner:  pramsey
      Type:  defect   |     Status:  new
  Priority:  medium   |  Milestone:  PostGIS 3.1.0
 Component:  postgis  |    Version:  master
Resolution:           |   Keywords:
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Comment (by Algunenano):

 I've modified the PR to change how the coordinates are calculated to use
 something like:

 `pt.y = origin_u + tile_height * n`

 N will hopefully more precise value (an integer or an integer.5), but
 what's more important when changing to a different/adjacent tile it will
 do the same calculations.

 For example cell_j_10 + 0.5 (10.5) should be the same as cell_j_11 - 0.5
 (10.5). Technically there could still be some small differences (likely
 with floating point numbers), which could be solved by using ints
 (everything multiplied by 2, then at the very end transform it to float
 and divide it by 2) but I think it's an unlikely scenario.

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Ticket URL: <https://trac.osgeo.org/postgis/ticket/4627#comment:4>
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