[OSM-dev] Free mapping software

[SteveC]

* @ 17/10/06 01:47:05 PM bvh-osm at irule.be wrote:
> Hi,
> 
> as a test project to get acquainted with Qt4 I wrote a small mapping
> program some time ago. After learning about Openstreetmap and the
> enthousiasm for free mapping solutions I decided to at least clean it
> up to make a quick release.
> 
> http://www.irule.be/bvh/c++/merkaartor/
> 
> I know the osm project has two free mapping software offerings already
> (osmeditor2 and josm) But for the moment I think I know too little about
> mapping to make a meaningfull contribution to them. I'd prefer to
> learn a bit more and evaluate afterwards if there are bits in Merkaartor
> that may end up usefull to fold into one of them.

hello and welcome

> It seems there has been talk about using bezier segments.
>  What's the status on that? Has there been a proposal
> on how to represent bezier curves in .osm files? Is the bezier curve
> defined in the lat/long coordinate space or in the projected coordinate
> space? In the latter case, which projection? In fact how does that work
> for straight lines? A segment (0;0)->(1;1) in (lon,lat) does that
> pass through (0.5;0,5)  in (lon,lat) ? And should I thus draw it
> not as a straight but as as a curved line depending on my projection?
> What projection does mapping software use in general?

Most segments are on the order of meters not miles so it's not a super
problem. There was a discussion about curves but it was decided that
there were more pressing things to do.

have fun,

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