[OpenLayers-Dev] Create a Map Tile Downloader

slippyr4 slippyr4 at gmail.com
Fri Jul 18 02:21:40 PDT 2014

Yes, the world extents stay the same, because they are used to work out the
proper x,y,z tiles based on the EPSG3857 projection which DOES cover the
whole planet.

That you are only interested in australia is neither here nor there.

mapExtents, in my code, is the area of map that my app is displaying.
consider it your region of interest. If your intention is to calculate the
tileset that corresponds to australia, then that forms your mapExtent.

On 18 July 2014 02:39, Nakadale <lester_sherwin at hotmail.com> wrote:

> Hi Slippyr4,
> I have to ask since my base map isn't really the whole world map but just a
> portion of it. let's say i can only zoom in and zoom out on the island of
> Australia. would the "World Extents" be the same as the one on your code?
> and when you are referring to MapExtends that would mean the size of the
> map
> container?
> Thank you for the help! :)
> --
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