render the side tag

[k-yle]

This PR renders the side=* tag, similar to how direction=* is rendered.

side=* is used with highway=cyclist_waiting_aid, but it is currently slow and tricky to use this tag. This PR aims to make it much more intuitive to map the side. It can be tested from here.

[1ec5]

Good idea, though I wonder if reusing the “cone” would risk confusing some users. Some mappers are also using side=* on traffic_signals=* vertices. This change will cause these vertices’ cones to point away from the street, which would be inconsistent with the cones for standalone traffic_signals=* nodes. Plus, it might be necessary to combine side=* with direction=* in some cases. In the screenshot above, this would imply four different “faces” rather than two. Maybe side=* could act as more of a mask, chopping the directional cone in half?

[tordans]

I was wondering about how to visualize the side as well.

The direction is more of a "looking direction" or "affected area".

But the side is more of "an anchor" or a "connection point" or a "this belongs to over there" indicator. However I don't see a way to visualize those well. Especially when the actual "anchor point" is unknown (we only now "it is to the right").

The other UI we use to show direction of elements is on barrier=retaining_wall and such with the small arrows next to the line. Maybe this is something we can build upon for this UI? Like one of those arrows next to the node?

[tordans]

Like one of those arrows next to the node?

Something like … ?

[k-yle]

Good idea, though I wonder if reusing the “cone” would risk confusing some users.
[...]
Maybe side=* could act as more of a mask, chopping the directional cone in half?

That's a cool idea, although it might be confusing if side+direction renders differently to side and direction on their own? Here's what it could look like:

⊿:
◭:

Like one of those arrows next to the node?

Something like this maybe?

△:
→:
⏢:
▭:
T:

Any other ideas would be greatly appreciated...

[tyrasd]

I like the △ 👍

[tyrasd]

Another way to do it could be to shift the vertex icon itself to the side, like this:

But I don't think that looks good and could be even confusing (e.g. it's unclear where other objects would snap to, etc.).

[tyrasd]

For cyclist waiting aids the side tag is working a bit differently than normal side tags. 🙈 We need to check if this rendering is working for them as documented on the wiki.

[k-yle]

Following a discussion last week, we will not render the side tag for highway=cyclict_waiting_aid on a bidirectional cycleway, because the wording in the proposal is too ambiguous 😕 I wanted to fix the definition a year ago, but now it's too late...