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Add map viewer based on Leaflet

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Matthias Schiffer 2015-02-02 09:08:36 +01:00
parent fd4ce45885
commit e922dd601e
10 changed files with 618 additions and 0 deletions
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83
viewer/MinedMap.js Normal file
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var MinedMapLayer = L.GridLayer.extend({
initialize: function (info) {
this._info = info.info;
this._regions = info.regions;
if (!L.Browser.android) {
this.on('tileunload', this._onTileRemove);
}
},
createTile: function (coords, done) {
var tile = document.createElement('img');
tile.onload = L.bind(this._tileOnLoad, this, done, tile);
tile.onerror = L.bind(this._tileOnError, this, done, tile);
tile.alt = '';
if (coords.x >= this._info.minX && coords.x <= this._info.maxX &&
coords.y >= this._info.minZ && coords.y <= this._info.maxZ &&
this._regions[coords.y-this._info.minZ][coords.x-this._info.minX])
tile.src = 'data/r.'+coords.x+'.'+coords.y+'.png';
return tile;
},
_tileOnLoad: function (done, tile) {
done(null, tile);
},
_tileOnError: function (done, tile, e) {
done(e, tile);
},
_getTileSize: function () {
return 512;
},
_onTileRemove: function (e) {
e.tile.onload = null;
e.tile.src = L.Util.emptyImageUrl;
},
_abortLoading: function () {
var i, tile;
for (i in this._tiles) {
tile = this._tiles[i].el;
tile.onload = L.Util.falseFn;
tile.onerror = L.Util.falseFn;
if (!tile.complete) {
tile.src = L.Util.emptyImageUrl;
L.DomUtil.remove(tile);
}
}
}
});
window.createMap = function () {
var xhr = new XMLHttpRequest();
xhr.onload = function () {
var info = JSON.parse(this.responseText);
var map = L.map('map', {
center: [0, 0],
zoom: 1,
minZoom: 1,
maxZoom: 1,
crs: L.CRS.Simple,
maxBounds: [
[-256*(info.info.maxZ+1), 256*info.info.minX],
[-256*info.info.minZ, 256*(info.info.maxX+1)],
],
});
(new MinedMapLayer(info)).addTo(map);
};
xhr.open('GET', 'data/info.json', true);
xhr.send();
}