Add support for OSM vector tiles #4518
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| .map { | ||
| background: #f8f4f0; | ||
| } |
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| --- | ||
| layout: example.html | ||
| title: OSM Vector Tiles | ||
| shortdesc: Using OpenStreetMap vector tiles. | ||
| docs: > | ||
| A simple vector tiles map with OpenStreetMap vector tiles. **Note**: The tiles used in this example are not optimized for rendering - they clip tiles exactly at the tile boundary instead of adding a buffer, and use geographic coordinates instead of tile relative pixel coordinates in view projection. | ||
| tags: "vector, tiles, osm" | ||
| --- | ||
| <div id="map" class="map"></div> |
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| goog.require('ol.Map'); | ||
| goog.require('ol.View'); | ||
| goog.require('ol.format.TopoJSON'); | ||
| goog.require('ol.layer.VectorTile'); | ||
| goog.require('ol.proj'); | ||
| goog.require('ol.source.VectorTile'); | ||
| goog.require('ol.style.Fill'); | ||
| goog.require('ol.style.Stroke'); | ||
| goog.require('ol.style.Style'); | ||
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| var format = new ol.format.TopoJSON(); | ||
| var tileGrid = ol.tilegrid.createXYZ({ maxZoom: 19 }); | ||
| var roadStyleCache = {}; | ||
| var roadColor = { | ||
| 'major_road': '#776', | ||
| 'minor_road': '#ccb', | ||
| 'highway': '#f39' | ||
| }; | ||
| var landuseStyleCache = {}; | ||
| var buildingStyle = [ | ||
| new ol.style.Style({ | ||
| fill: new ol.style.Fill({ | ||
| color: '#666', | ||
| opacity: 0.4 | ||
| }), | ||
| stroke: new ol.style.Stroke({ | ||
| color: '#444', | ||
| width: 1 | ||
| }) | ||
| }) | ||
| ]; | ||
|
|
||
| var map = new ol.Map({ | ||
| layers: [ | ||
| new ol.layer.VectorTile({ | ||
| source: new ol.source.VectorTile({ | ||
| format: format, | ||
| tileGrid: tileGrid, | ||
| url: 'http://{a-c}.tile.openstreetmap.us/' + | ||
| 'vectiles-water-areas/{z}/{x}/{y}.topojson' | ||
| }), | ||
| style: new ol.style.Style({ | ||
| fill: new ol.style.Fill({ | ||
| color: '#9db9e8' | ||
| }) | ||
| }) | ||
| }), | ||
| new ol.layer.VectorTile({ | ||
| source: new ol.source.VectorTile({ | ||
| format: format, | ||
| tileGrid: tileGrid, | ||
| url: 'http://{a-c}.tile.openstreetmap.us/' + | ||
| 'vectiles-highroad/{z}/{x}/{y}.topojson' | ||
| }), | ||
| style: function(feature, resolution) { | ||
| var kind = feature.get('kind'); | ||
| var railway = feature.get('railway'); | ||
| var sort_key = feature.get('sort_key'); | ||
| var styleKey = kind + '/' + railway + '/' + sort_key; | ||
| var style = roadStyleCache[styleKey]; | ||
| if (!style) { | ||
| var color, width; | ||
| if (railway) { | ||
| color = '#7de'; | ||
| width = 1; | ||
| } else { | ||
| color = roadColor[kind]; | ||
| width = kind == 'highway' ? 1.5 : 1; | ||
| } | ||
| style = new ol.style.Style({ | ||
| stroke: new ol.style.Stroke({ | ||
| color: color, | ||
| width: width | ||
| }), | ||
| zIndex: sort_key | ||
| }); | ||
| roadStyleCache[styleKey] = style; | ||
| } | ||
| return style; | ||
| } | ||
| }), | ||
| new ol.layer.VectorTile({ | ||
| source: new ol.source.VectorTile({ | ||
| format: format, | ||
| tileGrid: tileGrid, | ||
| url: 'http://{a-c}.tile.openstreetmap.us/' + | ||
| 'vectiles-buildings/{z}/{x}/{y}.topojson' | ||
| }), | ||
| style: function(f, resolution) { | ||
| return (resolution < 10) ? buildingStyle : null; | ||
| } | ||
| }), | ||
| new ol.layer.VectorTile({ | ||
| source: new ol.source.VectorTile({ | ||
| format: format, | ||
| tileGrid: tileGrid, | ||
| url: 'http://{a-c}.tile.openstreetmap.us/' + | ||
| 'vectiles-land-usages/{z}/{x}/{y}.topojson' | ||
| }), | ||
| visible: false, | ||
| style: function(feature, resolution) { | ||
| var kind = feature.get('kind'); | ||
| var styleKey = kind; | ||
| var style = landuseStyleCache[styleKey]; | ||
| if (!style) { | ||
| var color, width; | ||
| color = { | ||
| 'parking': '#ddd', | ||
| 'industrial': '#aaa', | ||
| 'urban area': '#aaa', | ||
| 'park': '#76C759', | ||
| 'school': '#DA10E7', | ||
| 'garden': '#76C759', | ||
| 'pitch': '#D58F8D', | ||
| 'scrub': '#3E7D28', | ||
| 'residential': '#4C9ED9' | ||
| }[kind]; | ||
| width = kind == 'highway' ? 1.5 : 1; | ||
| style = new ol.style.Style({ | ||
| stroke: new ol.style.Stroke({ | ||
| color: color, | ||
| width: width | ||
| }), | ||
| fill: new ol.style.Fill({ | ||
| color: color, | ||
| opacity: 0.5 | ||
| }) | ||
| }); | ||
| landuseStyleCache[styleKey] = style; | ||
| } | ||
| return style; | ||
| } | ||
| }) | ||
| ], | ||
| target: 'map', | ||
| view: new ol.View({ | ||
| center: ol.proj.fromLonLat([-74.0064, 40.7142]), | ||
| maxZoom: 19, | ||
| zoom: 15 | ||
| }) | ||
| }); | ||
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For future reference, this could also just be a
ol.style.Styleinstance instead of an array (and you get a very slight performance gain for never using arrays).There was a problem hiding this comment.
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Oh, one I forgot to change. Thanks, I created #4535.