Smoothness theme based on surface-tags

[tordans]

I am thinking about creating a theme for a surface-quest based on https://wiki.openstreetmap.org/wiki/Berlin/Verkehrswende/smoothness

The theme would have to …

• allow to add the surface tag based on a list of selected values
• show different images (answers) for the smoothness-key based on the value of the surface tag
• show the images + image-text in a nice way
• ideally allow to set check_date:smoothness=<Date> once the object has a smoothness-value (hide the answer otherwise), so we can check which data was already checked/updated and which is still to do.
  • ideally with a "today"-quicklink to add the current date in the right format.

Any thought on this?
And any hints towards which parts of this requirements are also possible or maybe which theme does something similar would be very welcome.

---

This topic is also discussed in streetcomplete/StreetComplete#3257 (and originally in streetcomplete/StreetComplete#1630) and our meetup https://wiki.openstreetmap.org/wiki/Berlin/Verkehrswende.

[pietervdvn]

Hi Tobias,

Yes, this is all very possible to do - even quite easy.

If you haven't made a theme before, start reading these docs

Every tagrendering is a snippet of HTML. You can style it there, have a look at the bicycle parking theme which uses embedded images. Alternatively (if you feel up to the challenge), you can add an image option to the tagrendering format and make a fancy UI for them - this would be a great step to mimic StreetComplete.

Also, do have a look at the 'cycle-infra' theme. It has road surface and smoothness already - albait not very fancy.

Improving this theme would be your best bet, as it is already very advanced but still lacks some support for left and right cycleways. This tagging is suppported since short and would be a huge benefit. Only this sidewalk theme uses it for now.

At last, the gyroscope could be used to measure actual smoothness. A custom input element could be made for this, as HTML5 has an API forr this.

[matkoniecz]

@pietervdvn What you think about streetcomplete/StreetComplete#3592 - idea of sharing smothness/surface images and pulling definitions from third-party repository?

(usefulness of this idea depends on whether anyone except SC would be using this repository)

[pietervdvn]

We already have such a shared repository - it is called "the OpenStreetMap wiki". We can do this by defining these entries in the underlying wikdiata-entity to make them machine-readable: https://wiki.openstreetmap.org/wiki/Item:Q706.

[tordans]

Edit: Moved to streetcomplete/StreetComplete#3592 (comment)