indicate route membership with shadow

[jfirebaugh]

P2 does this:

@samanpwbb what do you think? Useful?

[NopMap]

I think there is an important feature missing here.

Potlatch2 is capable of highlighting ways which are members of routes on the map (without selecting anything). This is very helpful to see where route relations are "hidden". It is also possible to distinguish different types of route relations by different color highlighting.

It is probably necessary to switch the highlighting of different types of relations on and off in the sidebar, similar to the "Map Features" checkboxes. Most users will be focusing on one type of relations, e.g. when I am mapping hiking routes, I am not interested in seeing turn restrictions or public transportation.
The default should probably be "off" as new users are ususally not yet familiar with relations and would be confused by the additional highlighting.

[NopMap]

In my fork I did a basic implementation of the behaviour possible in P2:

• membership of ways in hiking relations (foot or hiking) is translated in an attribute route-hiking on lines
• such lines are marked with a white semi-transparent highlight shadow unless selected or hovered upon, then the original selection shadow is used
• horse routes are similarly highlighted with a bluish shadow
  This makes it easy to note the presence of hiking relations and follow their run across the map.

You can try it out on www.wanderreitkarte.de. My implementation statically supports two route relations to match the focus of my fork, for the iD master it probably should be user-configurable which routes are of interest.

[bhousel]

I'll probably do something stylistically similar to what I just added in #4768 in the Turn Restriction editor.

It's not hard, but we need to render another stroke and add some design elements so that users can easily identify them - either by hovering on relations in the sidebar or when one is selected.

(Going to tag this as a priority item)

[NopMap]

I think there are two sides to this issue

• showing the associated members of a particular relation when selected or hovering, as shown above
• always marking all members of all instances of a type of route relation even if nothing is hovering/selected, as shown on my fork. E.g. all foot/hiking route relations. This is very helpful to understand routes.

Do you also plan a statical highlighting of the different route types?

[bhousel]

Do you also plan a statical highlighting of the different route types?

Not sure what you mean by this, but probably yes.