[Marble-devel] OSM looking sharp

[Torsten Rahn]

Hi,

Sounds like you made great progress in the meantime :-)

Am Samstag 05 September 2009 10:47:30 schrieb Bernhard Beschow:
> Notice also the other branches, especially the "cleanup" branch and the
>  "bugfix" branch. The improved-scrolling branch contains an experiment
>  where the map can be moved using two fingers via touchpad (if the driver
>  supports multi-touch).

Cool. Do you feel that this is production ready and should get applied to 
master^WSVN trunk?

>  The custom-storage plus the restricted-maps branch
>  add support for google map tiles.

Very Interesting. If I understand that correctly then this allows to load 
tiles that are provided using the Url scheme that Google Maps is using.
Although it's legally not possible for us to ship Marble with Google Maps
data it's at least very cool to have it technically supported.

> That's the work I've done so far on Marble. 

Sounds awesome. I'll try to check out your git repository later today ...

>  Although OSM looks quiet sharp now, there are still some minor artifacts.
>  Probably due to rounding errors, some lines get duplicated while others
>  get skipped. 

Yes, for "High Quality" this even has got some "optimization" reasons.

>  For this reason, and for performance reasons, I propose
>  optimized code paths for cases where the source projection equals the
>  target projection. The idea would be that the tiles knew their source
>  projection and had (virtual) methods for each target projection. Are there
>  any such plans already?

There are some plans and ideas how to implement this. I need some time to 
recall my latest thoughts on this. Will get in touch with you later today or 
tomorrow.

Torsten

>  How could this idea be implemented when
>  interpolation across tiles should still work?
> 
> Greetings,
> Bernhard
> 
> [1] http://github.com/shentok/marble/tree/sharp-osm
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