Roundabouts missing if the first node reference is the same as the last one

[alois-lohner]

There is maybe a issue generating roundabouts.

If a roundabout is defined with more then one ‚way‘ definition, roundabouts are visible within a map (tilemaker-server, TileServer GL).

If a roundabout is defined with only one ‚way‘ definition, roundabouts are not part of the mbtile file. The problem seems to be, that these ‚way‘ definitions references a couple of nodes, where the first node is the same as the last one in the reference list.

Screenshot OpenStreetMap

Screenshot Tilemaker-Server

By the way, in process.lua (resources/process-openmaptiles.lua) is the line to handle z10RoadValues (line 478) missing:

Should be: elseif z9RoadValues[h] then minzoom = 9 elseif z10RoadValues[h] then minzoom = 10 elseif z11RoadValues[h] then minzoom = 11

is: elseif z9RoadValues[h] then minzoom = 9 elseif z11RoadValues[h] then minzoom = 11

I used the current 3.0.0 release of tilemaker.

[systemed]

Thanks for spotting. #708 should fix this.

[alois-lohner]

708 fixed it - thanks