[OSM-dev] Why no curves in map data?
dieterdreist at gmail.com
Sun Mar 15 15:14:36 GMT 2009
2009/3/15 Stefan de Konink <stefan at konink.de>:
> Udo Giacomozzi wrote:
>> Of course I realize that now the OSM data format can't be extended to
>> curves without breaking existing renderes and tools...
> You can extend it to NURBS without breaking tools ;) Think about the
> control point approximation ;) So every embedded device that isn't fast
> or doesn't have a fpu will use the ugly linear version, while any other
> tool will use the weight associated with the line thus has a pretty
> version of it all.
I'm quite familiar with the use of NURBS ecc. but want to point you to
another fact: curves in streets are not designed completely "free" but
follow in nearly all cases some basic rules, that is: they are all
So when thinking about implementing curves, think first of
implementing this type of curve that is used to design streets.
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