mikey75 / jmaps Goto Github PK

Some map sources have configurable host prefixes for making requests across multiple servers.
Like a.tiles.openstreetmap.org, b.tiles.openstreetmap.org etc. Make it available in jmaps.

Example template would be: http://[a|b|c|d].tileserver.example.org/tile/{x}/{y}/{z}.png
and the [a|b|c|d] part is a set of hosts that should be plugged into url roundrobin style.

Basically the zoom out loop should behave exactly the same as if the user scrolled the mouse repeatedly.

If a map has more than one layer, show the overlay that lets you enable/disable selected layer. The layer would be active/inactive.

When downloading a tile, if it is already in cache (memory or 2nd level) it is never checked if the new version is available for download.
If a tile changed on the map source, we should be able to detect it, download the new tile and update cache accordingly. It is however, troublesome, since the web call to api would be needed on every tile draw. Some map services have limits on api calls per hour/day etc. Perhaps we should base it on the tile expiration date in cache.

Write a schema definition (xsd) for supported maps, and add validation against the schemas when loading maps.

Plot scale reference, something like this

Make jMaps recognize the extent of the map and not load track/waypoints that are out of band for the current map.
Most non-webmerkator maps will suffer from this. e.g plot route from Poland on non-wgs84 based map of i.e Netherlands.

setZoom considers only baseLayer for setting zoom value. It should consider all layers for calculating 'legal' zoom