[OSM-talk] colour fills in osmarender

[James Mastros]

On Fri, Jun 09, 2006 at 11:56:17AM +0100, TM wrote:
>    But what if roundabouts were defined (or treated by the routing algorithm)
>    as points, albeit of a special kind? Would this make sense? (If they were
>    regular points, displaying the data  would mean visualising the data
>    structure rather than describing actual features of the physical road
>    network. Surely, this would not make sense, as we'd need separate datasets
>    for rendering and routing.)
How about this: Consider a roundabout as /both/ a way of it's own, and the
roads that go through it.  For example, look at
http://maps.google.co.uk/maps?f=q&hl=en&ll=51.683679,-1.291173&spn=0.002534,0.010697&om=1.
You can look at that as four ways: Wooton Road northbound, Wooton Road
southbound, Dunmore Road westbound, Dunmore Road eastbound... or you can
look at it as one way, unnamed-roundabout.  (Note that this /does/ require
the ability for the roads to split into two seperate ways, divided-highway
style.  I think this is just plain neccessary.)
I think if we do both of those at once, routers can have the view they want,
by considering or ignoring the roundabout ways.

   -=- James Mastros