[Openstreetmap-dev] curves

SteveC steve at asklater.com
Wed Jan 18 11:56:02 GMT 2006


* @ 18/01/06 09:37:03 AM noodles at earth.li wrote:
> On Wed, Jan 18, 2006 at 09:29:44AM -0000, Tom Carden wrote:
> > > My experience of street network data in GIS is that it doesn't usually use
> > > curves at all. Everything is points and straight lines, or polylines, and
> > > although it looks crude at very close zooms the data is always good
> > > enough.
> > Interesting.  We can do better than that then :)
> 
> Doesn't adding curves make it a lot harder to do navigation bits?
> Presently it's quite easy as the data is nodes and straight lines, which
> means it's a simple directed graph where you can calculate the line
> lengths quite easily. Will the server be extended to return a suitable
> graph or will clients be expected to calculate the curve lengths
> themselves?

I'd expect clients to do it... it's not super hard.

have fun,

SteveC steve at asklater.com http://www.asklater.com/steve/




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