[Tagging] [OSM-talk] Tagging "wide" steps (tribune / terrace)

[M∡rtin Koppenhoefer]

2010/6/7 Roy Wallace <waldo000000 at gmail.com>:
> On Mon, Jun 7, 2010 at 10:46 PM, M∡rtin Koppenhoefer
> <dieterdreist at gmail.com> wrote:

> Martin, I don't really know what you mean. Perhaps I don't understand
> the type=area proposal properly. Can you give us a full example (i.e.
> the tags) of how you would map those curved steps?


actually this is not yet incorporated in the area proposal, that's why
you might be confused, but it could be done with it. E.g. draw 2 lines
that go alongside the stairs (without changing their height=orthogonal
to the direction of climbing). Add them to a relation tagged with
type=area
name=xy, optional
steps=15 (amount of steps=vertical sub-parts),optional

give the two ways a stairs role, e.g.
stairs:lower
stairs:upper

optionally you can draw connections between the lower and upper
way-ends (e.g. for curved sides) and give them the roles:
stairs:lateral

(or, for similarity: steps:lower, ...).

The renderer should now draw (quantity according to the zoomlevel and
max. actual number of steps) parallel interpolated lines from the
lower to the upper way. For proper (or easier) rendering it might be
required that the amount of nodes in stairs:lower and stairs:upper is
equal.

cheers,
Martin