[Tagging] Tunnels and bridges

Martin Koppenhoefer dieterdreist at gmail.com
Fri Feb 1 13:19:38 GMT 2013

2013/2/1 Peter Wendorff <wendorff at uni-paderborn.de>:
> case 2: the "legacy style" of at least one bridge highway is painted that
> wide that it's outer line(s) is/are outside of the bridge area (including
> casing).
> This way the "legacy style"s bridge casing is visible where the bridge area
> or it's casing is drawn on top of it, and the bridge area is covered by the
> highway on top.
> To summarize:
> If the bridge outline is hidden underneath the rendered road, the old bridge
> casing is not hidden (as it's per definition outside of the rendered road).
> Therefore it's not a problem.

Yes, it is not a real show stopper, but the rendering result in this
way would be somehow coincidental (there could for instance be
interferences from the casing and the polygon leading to quite ugly
artifacts). The cleaner solution would be to suppress rendering of
casings when there is an outline polygon.


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