cst1/openstreetmap-website
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With much assistance from kleptog, make the map wrap when zoomed right out.

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This commit is contained in:
Tom Hughes 2007-06-29 15:43:14 +00:00
parent 4358a6adcb
commit 2804e77cc3
1 changed files with 14 additions and 4 deletions
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18
public/javascripts/map.js
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@ -8,7 +8,7 @@ function createMap(divName, centre, zoom) {
}
map = new OpenLayers.Map(divName,
{ maxExtent: new OpenLayers.Bounds(-20037508.34,-20037508.34,20037508.34,20037508.34),
{ maxExtent: new OpenLayers.Bounds(-20037508,-20037508,20037508,20037508),
numZoomLevels: 19,
maxResolution: 156543,
units: 'm',
@ -16,12 +16,12 @@ function createMap(divName, centre, zoom) {
var mapnik = new OpenLayers.Layer.TMS("Mapnik",
"http://tile.openstreetmap.org/",
{ type: 'png', getURL: getTileURL });
{ type: 'png', getURL: getTileURL, displayOutsideMaxExtent: true });
map.addLayer(mapnik);
var osmarender = new OpenLayers.Layer.TMS("Osmarender",
"http://dev.openstreetmap.org/~ojw/Tiles/tile.php/",
{ type: 'png', getURL: getTileURL });
{ type: 'png', getURL: getTileURL, displayOutsideMaxExtent: true });
map.addLayer(osmarender);
map.addControl(new OpenLayers.Control.LayerSwitcher());
@ -35,8 +35,18 @@ function getTileURL(bounds) {
var x = Math.round((bounds.left - this.maxExtent.left) / (res * this.tileSize.w));
var y = Math.round((this.maxExtent.top - bounds.top) / (res * this.tileSize.h));
var z = this.map.getZoom();
var limit = Math.pow(2, z);
return this.url + z + "/" + x + "/" + y + "." + this.type;
if (y < 0 || y >= limit)
{
return null;
}
else
{
x = ((x % limit) + limit) % limit;
return this.url + z + "/" + x + "/" + y + "." + this.type;
}
}
function addMarkerToMap(position, icon, description) {