Sorting within stop/platform members of type=route relations

[simon04]

Public transport members of role stop/platform are put in front of other members as of #10973.

In addition, those members should be grouped in pairs of stop + platform by their name and/or stop_area membership.

See also #10972.

[skyper]

Was this implemented ?

[michael2402]

Replying to skyper:

Was this implemented ?

The pt_assist plugin can do something similar. It is not in core.

Should this be a core functionality or should it stay as plugin?

[skyper]

I would say, if core supports sorting members, it should do it properly without any plugin. Sorting works much better now and the order of stops is the only remaining small issue.

[michael2402]

Replying to skyper:

I would say, if core supports sorting members, it should do it properly without any plugin. Sorting works much better now and the order of stops is the only remaining small issue.

The logic to sort stops is more complex. We need to find the closest position on the route of each stop.

I am currently using a binary search along the segments and then do a normal min() over all segments in the bounds to find that position:

​https://github.com/JOSM/pt_assistant/blob/a25fc890878179e7eaf08fceb1ab09daf28c2760/src/main/java/org/openstreetmap/josm/plugins/pt_assistant/gui/routing/RouteTraverser.java#L86

The algorithm cannot handle stops that are next to the rout twice (e.g. because the route has a loop) - still have to find a nice solution there.