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OpenStreetMap & OpenLayers: Creating A Map With Markers (ref: https://mediarealm.com.au/articles/openstreetmap-openlayers-map-markers/)
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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>OpenStreetMap & OpenLayers - Marker Example</title> | |
| <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> | |
| <link rel="stylesheet" href="https://openlayers.org/en/v4.6.5/css/ol.css" type="text/css"> | |
| <script src="https://openlayers.org/en/v4.6.5/build/ol.js" type="text/javascript"></script> | |
| <script> | |
| /* OSM & OL example code provided by https://mediarealm.com.au/ */ | |
| var map; | |
| var mapLat = -33.829357; | |
| var mapLng = 150.961761; | |
| var mapDefaultZoom = 10; | |
| function initialize_map() { | |
| map = new ol.Map({ | |
| target: "map", | |
| layers: [ | |
| new ol.layer.Tile({ | |
| source: new ol.source.OSM({ | |
| url: "https://a.tile.openstreetmap.org/{z}/{x}/{y}.png" | |
| }) | |
| }) | |
| ], | |
| view: new ol.View({ | |
| center: ol.proj.fromLonLat([mapLng, mapLat]), | |
| zoom: mapDefaultZoom | |
| }) | |
| }); | |
| } | |
| function add_map_point(lat, lng) { | |
| var vectorLayer = new ol.layer.Vector({ | |
| source:new ol.source.Vector({ | |
| features: [new ol.Feature({ | |
| geometry: new ol.geom.Point(ol.proj.transform([parseFloat(lng), parseFloat(lat)], 'EPSG:4326', 'EPSG:3857')), | |
| })] | |
| }), | |
| style: new ol.style.Style({ | |
| image: new ol.style.Icon({ | |
| anchor: [0.5, 0.5], | |
| anchorXUnits: "fraction", | |
| anchorYUnits: "fraction", | |
| src: "https://upload.wikimedia.org/wikipedia/commons/e/ec/RedDot.svg" | |
| }) | |
| }) | |
| }); | |
| map.addLayer(vectorLayer); | |
| } | |
| </script> | |
| </head> | |
| <body onload="initialize_map(); add_map_point(-33.8688, 151.2093);"> | |
| <div id="map" style="width: 100vw; height: 100vh;"></div> | |
| </body> | |
| </html> |
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| <?php | |
| // Example script to proxy OSM Tiles | |
| // Written by Anthony Eden (https://mediarealm.com.au) | |
| // This is a simplistic example without any caching | |
| // For an example with caching, see https://wiki.openstreetmap.org/wiki/ProxySimplePHP | |
| $x = $_GET['x']; | |
| $y = $_GET['y']; | |
| $z = $_GET['z']; | |
| if(!is_numeric($x) || !is_numeric($y) || !is_numeric($z)) { | |
| http_response_code(404); | |
| die("404 Not Found"); | |
| } | |
| $ch = curl_init('https://maps.wikimedia.org/osm-intl/'.$z.'/'.$x.'/'.$y.'.png'); | |
| curl_setopt($ch, CURLOPT_RETURNTRANSFER, true); | |
| curl_setopt($ch, CURLOPT_HEADER, 0); | |
| $image = curl_exec($ch); | |
| if(curl_getinfo($ch, CURLINFO_RESPONSE_CODE) == "404") { | |
| http_response_code(404); | |
| curl_close($ch); | |
| die("404 Not Found"); | |
| } | |
| header ('Content-Type: image/png'); | |
| header("Access-Control-Allow-Origin: *"); | |
| echo $image; | |
| curl_close($ch); | |
| ?> |
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