91 lines
2.3 KiB
JavaScript
91 lines
2.3 KiB
JavaScript
goog.require('ol.Map');
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goog.require('ol.View');
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goog.require('ol.format.TopoJSON');
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goog.require('ol.layer.VectorTile');
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goog.require('ol.proj');
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goog.require('ol.source.VectorTile');
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goog.require('ol.style.Fill');
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goog.require('ol.style.Stroke');
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goog.require('ol.style.Style');
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var key = 'vector-tiles-5eJz6JX';
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var roadStyleCache = {};
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var roadColor = {
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'major_road': '#776',
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'minor_road': '#ccb',
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'highway': '#f39'
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};
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var buildingStyle = new ol.style.Style({
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fill: new ol.style.Fill({
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color: '#666',
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opacity: 0.4
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}),
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stroke: new ol.style.Stroke({
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color: '#444',
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width: 1
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})
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});
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var waterStyle = new ol.style.Style({
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fill: new ol.style.Fill({
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color: '#9db9e8'
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})
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});
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var roadStyle = function(feature) {
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var kind = feature.get('kind');
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var railway = feature.get('railway');
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var sort_key = feature.get('sort_key');
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var styleKey = kind + '/' + railway + '/' + sort_key;
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var style = roadStyleCache[styleKey];
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if (!style) {
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var color, width;
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if (railway) {
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color = '#7de';
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width = 1;
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} else {
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color = roadColor[kind];
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width = kind == 'highway' ? 1.5 : 1;
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}
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style = new ol.style.Style({
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stroke: new ol.style.Stroke({
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color: color,
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width: width
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}),
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zIndex: sort_key
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});
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roadStyleCache[styleKey] = style;
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}
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return style;
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};
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var map = new ol.Map({
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layers: [
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new ol.layer.VectorTile({
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source: new ol.source.VectorTile({
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attributions: '© OpenStreetMap contributors, Who’s On First, ' +
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'Natural Earth, and openstreetmapdata.com',
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format: new ol.format.TopoJSON({
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layerName: 'layer',
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layers: ['water', 'roads', 'buildings']
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}),
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maxZoom: 19,
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url: 'https://tile.mapzen.com/mapzen/vector/v1/all/{z}/{x}/{y}.topojson?api_key=' + key
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}),
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style: function(feature, resolution) {
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switch (feature.get('layer')) {
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case 'water': return waterStyle;
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case 'roads': return roadStyle(feature);
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case 'buildings': return (resolution < 10) ? buildingStyle : null;
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default: return null;
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}
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}
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})
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],
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target: 'map',
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view: new ol.View({
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center: ol.proj.fromLonLat([-74.0064, 40.7142]),
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maxZoom: 19,
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zoom: 15
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})
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});
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