[OSM-talk] Best way to draw areas with holes?

[Alex Mauer]

Martijn van Oosterhout wrote:
> "polygon with holes" and "splitting outside into peices because it's
> too long" are incompatable, you either do one or the other. 

I don't believe there's any technical reason for this -- if a large way
can otherwise be split into pieces, and later rejoined by the renderer,
I don't see why that rejoined way can't be used as the outside of a
polygon with holes.

> A
> riverbank has to be a single closed polygon, the only area feature
> exempt from this rule is "natural=coastline".

Perhaps that should be changed, though I have no idea how hard this is
to do in the renderer.

> TBH, I'd forget the multipolygon stuff and draw the islands as
> natural=land or some such...

A nice thought, if it rendered properly.  Or has that changed now?

-Alex Mauer "hawke"

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