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<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>TileLite Mapnik Server</title>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<style type="text/css">
html, body { height: 100%; }
body {margin: 0px;}
#map {
width: 100%;
height: 100%;
}
</style>
<!--<script src="local_js/OpenLayers.js"></script>
<script src="local_js/OpenStreetMap.js"></script>
<script type="text/javascript" src="local_js/jquery.min.js"></script>-->
<script src="http://dev.openlayers.org/nightly/OpenLayers.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.2.6/jquery.min.js"></script>
<script src="http://maps.google.com/maps?file=api&v=2&key="></script>
<script type="text/javascript">
var map, osm_official_tiles, tilelite_layer;
var enable_gmaps = true;
function getZoom(e) {
$('#zoom')[0].innerHTML = 'Zoom: ' + map.getZoom();
}
function init() {
// Options for World Map in Google Spherical Mercator Projection
var options = {
maxResolution: 156543.0339,
units: 'm',
projection: new OpenLayers.Projection("EPSG:900913"),
maxExtent: new OpenLayers.Bounds(-20037508.34, -20037508.34, 20037508.34, 20037508.34),
//restrictedExtent: new OpenLayers.Bounds(16770012,-4044490,16876903,-3980726),
};
function getTileURL (bounds) {
var res = this.map.getResolution();
var x = Math.round((bounds.left - this.maxExtent.left) / (res * this.tileSize.w));
var y = Math.round((this.maxExtent.top - bounds.top) / (res * this.tileSize.h));
var z = this.map.getZoom();
var limit = Math.pow(2, z);
if (y < 0 || y >= limit)
{
return ""; // Tile not found. Use Firefox and Firebug to see url requested
}
else
{
x = ((x % limit) + limit) % limit;
var url = this.url;
var path = z + "/" + x + "/" + y + ".png";
if (url instanceof Array)
{
url = this.selectUrl(path, url);
}
return url + path;
}
}
map = new OpenLayers.Map("map", options);
function maxResForTileSize(tileSize){
//var pi = 3.1415926535900001;
//return 6378137 * 2 * pi/tileSize
return map.maxExtent.getWidth()/tileSize
}
var tiles_url = "http://localhost:8000/"
// Note this is an openlayers/browser trick for pointing to multiple urls for speed,
// TileLite just happens to work with it out of the box since it ignores any url prefix
var servers = [tiles_url+'a/',tiles_url+'b/',tiles_url+'c/']
var xyz_servers = [tiles_url+'a/${z}/${x}/${y}.png',tiles_url+'b/${z}/${x}/${y}.png',tiles_url+'c/${z}/${x}/${y}.png']
// Create an OSM-like tiling layer from a TileCache layer by overriding the 'getURL()'
// http://trac.openlayers.org/browser/trunk/openlayers/lib/OpenLayers/Layer/TileCache.js#L75
// http://trac.openlayers.org/ticket/1950
var tilelite_64 = new OpenLayers.Layer.TileCache("Tilelite - serving 64 pixel tiles", servers,
"dummy", // layername: unused but must be set
{ type: "png",
getURL: getTileURL,
maxResolution: maxResForTileSize(64),
gutter:0,
buffer:0,
tileSize: new OpenLayers.Size(64,64),
transitionEffect:'resize'
}
);
tilelite_256 = new OpenLayers.Layer.TileCache("Tilelite - serving 256 pixel tiles", servers,
"dummy", // layername: unused but must be set
{ type: "png",
getURL: getTileURL,
maxResolution: maxResForTileSize(256),
gutter:0,
buffer:0,
transitionEffect:'resize'
}
);
var tilelite_512 = new OpenLayers.Layer.TileCache("Tilelite - serving 512 pixel tiles", servers,
"dummy", // layername: unused but must be set
{ type: "png",
getURL: getTileURL,
maxResolution: maxResForTileSize(512),
gutter:0,
buffer:0,
tileSize: new OpenLayers.Size(512,512),
transitionEffect:'resize'
}
);
/*
var wms = new OpenLayers.Layer.TileCache( "Sydney",
['http://mapserver-tile-1.osgeo.org/tilecache',
'http://mapserver-tile-2.osgeo.org/tilecache'],
'osm',
{
maxExtent: new OpenLayers.Bounds(-20000000,-20000000,20000000,20000000),
scales: [10000,25000,50000,100000,250000,500000,1000000,2500000,5000000,10000000],
units: 'm',
projection:new OpenLayers.Projection("EPSG:900913"),
buffer:0,
isBaselayer:true
} );
*/
// Alternate way of creating a tilelite layer -> borrow from the OSM layer contructor but repoint urls to localhost
//new OpenLayers.Layer.Google( "Google Terrain", {type: G_PHYSICAL_MAP, 'sphericalMercator': true} );
tilelite_layer = new OpenLayers.Layer.OSM("TileLite Server Layer from OSM Layer (256 px tiles)");
tilelite_layer.url = xyz_servers;
//tilelite_layer.sphericalMercator = true;
tilelite_layer.buffer = 0;
tilelite_layer.attribution = "Data served by <a href='http://bitbucket.org/springmeyer/tilelite/'>TileLite </a>"
//tilelite_layer.setIsBaseLayer(false);
//tilelite_layer.transitionEffect = null;
// Uses linked OpenStreetMap.js from openstreetmap as a comparison layer
osm_official_tiles = new OpenLayers.Layer.OSM("OpenStreetMap (Mapnik)");
osm_official_tiles.attribution = "Map Data CC-BY-SA Openstreetmap.org"
map.addLayers([tilelite_layer,osm_official_tiles,tilelite_64,tilelite_256,tilelite_512]);
if (enable_gmaps) {
var gphy = new OpenLayers.Layer.Google( "Google Terrain", {type: G_PHYSICAL_MAP, 'sphericalMercator': true} );
var gmap = new OpenLayers.Layer.Google( "Google Streets", {'sphericalMercator': true});
var ghyb = new OpenLayers.Layer.Google("Google Satellite", {type: G_HYBRID_MAP, 'sphericalMercator': true} );
map.addLayers([ghyb, gmap, gphy]);
}
map.addControl(new OpenLayers.Control.Scale());
map.addControl(new OpenLayers.Control.MousePosition());
map.addControl(new OpenLayers.Control.Navigation());
map.addControl(new OpenLayers.Control.PanZoom());
var ls = new OpenLayers.Control.LayerSwitcher()
map.addControl(ls);
ls.maximizeControl();
//
//map.zoomToExtent(new OpenLayers.Bounds(-14301062.241481643,5702202.309052736,-12773544.668504298,6266001.829583203))
// http://localhost:8000/instance.json?jsoncallback=jsonp1237265183593&_=1237265183665
function zoom_to_tilelite_extents() {
$.getJSON(tiles_url + "instance.json?jsoncallback=?",
function(data){
var e = data.extent;
map.zoomToExtent(new OpenLayers.Bounds(e[0], e[1], e[2], e[3]));
});
}
zoom_to_tilelite_extents();
map.events.register("moveend", map, getZoom);
map.events.register("zoomend", map, getZoom);
//map.zoomToMaxExtent();
}
</script>
</head>
<body onload="init()">
<h2 style="position:absolute; z-index:10000; left: 100px;">TileLite Mapnik Server</h2>
<h3 style="position:absolute; z-index:10000; bottom: 20px; left: 50px;" id="zoom">Zoom:</h3>
<div id="map">
</div>
</body>
</html>
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