Am 01.02.2013 14:19, schrieb Martin Koppenhoefer:
2013/2/1 Peter Wendorff <wendo...@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.
Sure, but this would occur only in case a renderer
- renders the bridge-area
- renders the old bridge casing
- and does not calculate the "conflict" in it's preprocessing.
of course we could add a rendering hint like
part_of_a_bridge_area=yes to make it easier for renderers to determine
that case,
but on the other hand it's a reasonable preprocessing step to calculate
these conflicts (sharing nodes between ways having bridge=* and ways
having the bridge-area-tag => remove the bridge=yes tag for rendering).
regards
Peter
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