leaftest/www/map.js

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JavaScript
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2015-02-19 16:02:56 +01:00
var xmlhttp = new XMLHttpRequest();
xmlhttp.onreadystatechange = function() {
if (xmlhttp.readyState == 4 && xmlhttp.status == 200) {
var config = JSON.parse(xmlhttp.responseText);
loadmap(config);
}
}
xmlhttp.open("GET", "conf.json", true);
xmlhttp.overrideMimeType("application/json"); //to silence browser warnings when started without a server
xmlhttp.send();
function loadmap(config) {
var mapsize = config.mapsize;
var spawn = config.spawn;
var zoommin = config.zoommin;
var xb= 0-spawn.x+mapsize/2;
var yb= 0-spawn.y-mapsize/2;
var bnd = new L.LatLngBounds();
bnd.extend(L.latLng([spawn.x-mapsize/2, spawn.y-mapsize/2]));
bnd.extend(L.latLng([spawn.x+mapsize/2, spawn.y+mapsize/2]));
var map = L.map('map', {
maxZoom:24,
minZoom:zoommin,
maxNativeZoom:20,
fullscreenControl: true,
//maxBounds: bnd, //commented out until it works...
crs: /*L.CRS.Simple*/L.extend({}, L.CRS, {
projection: {
project: function (latlng) {
return new L.Point(latlng.lat+xb, latlng.lng+yb);
},
unproject: function (point) {
return new L.LatLng(point.x-xb, point.y-yb);
}
},
transformation: new L.Transformation(1, 0, -1, 0),
scale: function (zoom) {
return Math.pow(2, zoom-20);
}
})
}).setView([0,0], 22);
map.setView([spawn.x,spawn.y]);
L.tileLayer('tiles/{z}/map_{x}_{y}.png', {
maxZoom: 24,
maxNativeZoom: 20,
tileSize: 256,
continuousWorld: true
}).addTo(map);
var hash = L.hash(map);
}