96 lines
2.4 KiB
JavaScript
96 lines
2.4 KiB
JavaScript
import Map from '../src/ol/Map.js';
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import TopoJSON from '../src/ol/format/TopoJSON.js';
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import VectorTileLayer from '../src/ol/layer/VectorTile.js';
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import VectorTileSource from '../src/ol/source/VectorTile.js';
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import View from '../src/ol/View.js';
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import {Fill, Stroke, Style} from '../src/ol/style.js';
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import {fromLonLat} from '../src/ol/proj.js';
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const key = 'uZNs91nMR-muUTP99MyBSg';
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const roadStyleCache = {};
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const 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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const buildingStyle = new Style({
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fill: new Fill({
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color: '#666',
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opacity: 0.4,
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}),
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stroke: new 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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const waterStyle = new Style({
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fill: new Fill({
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color: '#9db9e8',
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}),
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});
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const roadStyle = function (feature) {
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const kind = feature.get('kind');
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const railway = feature.get('railway');
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const sort_key = feature.get('sort_key');
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const styleKey = kind + '/' + railway + '/' + sort_key;
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let style = roadStyleCache[styleKey];
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if (!style) {
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let 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 Style({
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stroke: new 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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const map = new Map({
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layers: [
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new VectorTileLayer({
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source: new VectorTileSource({
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attributions:
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'© OpenStreetMap contributors, Who’s On First, ' +
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'Natural Earth, and osmdata.openstreetmap.de',
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format: new 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:
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'https://tile.nextzen.org/tilezen/vector/v1/all/{z}/{x}/{y}.topojson?api_key=' +
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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':
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return waterStyle;
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case 'roads':
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return roadStyle(feature);
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case 'buildings':
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return resolution < 10 ? buildingStyle : null;
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default:
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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 View({
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center: 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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