On Wed, Jan 27, 2010 at 9:02 AM, evilC <[email protected]> wrote:

> Thanks Ben.
>
> Whilst mapping game coordinates to lats and lngs sounds like a simple
> option, it doesn't seem the "right" way to me.
>
> Lats and Lngs are surely angles, whereas the game world coordinates
> are distance-based. If I were to shoehorn game coords into a latlng
> system, and then they expand the game world, I have to re-shrink the
> world to fit in the latlng system again.
>
> Is there a way to do away with lats and lngs altogether, or at least
> change the numbering system so that it is not angle based or the
> number scale is different? Ideally I would like to modify the API to
> use actual world coordinates, rather than some ghastly bodge.


No; the public interfaces all use latitude/longitude.

 > Now this is a bit oversimplified: you'll have to tweak the projection so
> > that eg. markers are placed in the right positions on your tiles,
> otherwise
> > all your overlays will be misaligned.
>
> By this do you mean the raising to the power of two for each zoom
> level for tile coordinates (I saw something about that in the
> documentation).
>

No, the v3 API handles zooming itself.  But even at zoom 0 you'll need to
write your JS Projection implementation to match the projection used in your
tile server.


> Regards
>
> Clive
>
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