[OpenLayers-Users] Pre-seeding localStorage

[Greg Allensworth]

On 5/8/2013 6:30 AM, Jurrie Overgoor wrote:
> I am making a webapp with OpenLayers and I want to use the localStorage
> for offline situations. I want to give the users the ability to preload
> the tiles in the localStorage.

> My map is displaying a route with a maxExtend bounding box. I know this
> bounding box beforehand. So I need a mechanism to translate a Bounds
> object into tile urls for each zoom level. Maybe someone can push me in
> the right direction, or even has an example that does something similar?

Check out MobileMapStarter on Github. Look in cache.js specifically.

It saves to file storage, which isn't quite the same, but it does 
include the logic for translating a bounding box into a set of XYZ tile 
URLs.

https://github.com/gregallensworth/MobileMapStarter/blob/master/libs/cache.js

Look for seedCache()


-- 
Greg Allensworth, Web GIS Developer
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