[Tile-serving] [openstreetmap/osm2pgsql] WORK IN PROGRESS: Add pole_of_inaccessibility() function in Lua for polygons (PR #1822)

[Jakob Miksch]

@JakobMiksch commented on this pull request.



> +        name = tags.name,
+        tags = tags,
+        geom = geom,
+        -- The centroid is easy and fast to calculate
+        centroid = geom:centroid(),
+        -- The pole of inaccessibility can take a bit longer
+        poi1 = geom:pole_of_inaccessibility(),
+        -- The first parameter is the precision (by default it is set to
+        -- max(width, height) of the polygon envelope (bounding box), but
+        -- you can set it higher which makes the result less precise but
+        -- faster to calculate.
+        --
+        -- The second parameter is a "stretch" factor for the Y axis. Make
+        -- this larger than 1 (the default) to use an ellipse instead of a
+        -- circle when calculating the point. This makes it more suitable
+        -- for labels which usually have larger width that height.

```suggestion
        -- for labels which usually have larger width than height.
```

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