Last active
October 15, 2020 13:42
-
-
Save emoran/076b526d6bd4297544f46a8d3dba7965 to your computer and use it in GitHub Desktop.
Adding polygone in google maps
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <title>Drawing tools</title> | |
| <meta name="viewport" content="initial-scale=1.0, user-scalable=no"> | |
| <meta charset="utf-8"> | |
| <style> | |
| /* Always set the map height explicitly to define the size of the div | |
| * element that contains the map. */ | |
| #map { | |
| height: 80%; | |
| } | |
| /* Optional: Makes the sample page fill the window. */ | |
| html, body { | |
| height: 100%; | |
| margin: 0; | |
| padding: 0; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id="map"></div> | |
| <input id="save" value="save" type="button" /> | |
| <div id="geojson"></div> | |
| </body> | |
| <script> | |
| function initMap() { | |
| var map = new google.maps.Map(document.getElementById('map'), { | |
| center: {lat: 40.7328822, lng: -74.0006213}, | |
| zoom: 12 | |
| }); | |
| /*map.data.setControls(['Polygon']); | |
| map.data.setStyle({ | |
| editable: true, | |
| draggable: true | |
| });*/ | |
| //bindDataLayerListeners(map.data); | |
| var drawingManager = new google.maps.drawing.DrawingManager({ | |
| drawingMode: google.maps.drawing.OverlayType.POLYGON, | |
| drawingControl: true, | |
| drawingControlOptions: { | |
| position: google.maps.ControlPosition.TOP_CENTER, | |
| drawingModes: ['polygon'] | |
| } | |
| }); | |
| drawingManager.setMap(map); | |
| google.maps.event.addListener(drawingManager, 'overlaycomplete', function(event) { | |
| switch (event.type) { | |
| case google.maps.drawing.OverlayType.MARKER: | |
| map.data.add(new google.maps.Data.Feature({ | |
| geometry: new google.maps.Data.Point(event.overlay.getPosition()) | |
| })); | |
| break; | |
| case google.maps.drawing.OverlayType.RECTANGLE: | |
| var b = event.overlay.getBounds(), | |
| p = [b.getSouthWest(), { | |
| lat: b.getSouthWest().lat(), | |
| lng: b.getNorthEast().lng() | |
| }, | |
| b.getNorthEast(), { | |
| lng: b.getSouthWest().lng(), | |
| lat: b.getNorthEast().lat() | |
| } | |
| ] | |
| map.data.add(new google.maps.Data.Feature({ | |
| geometry: new google.maps.Data.Polygon([p]) | |
| })); | |
| break; | |
| case google.maps.drawing.OverlayType.POLYGON: | |
| map.data.add(new google.maps.Data.Feature({ | |
| geometry: new google.maps.Data.Polygon([event.overlay.getPath().getArray()]) | |
| })); | |
| break; | |
| case google.maps.drawing.OverlayType.POLYLINE: | |
| map.data.add(new google.maps.Data.Feature({ | |
| geometry: new google.maps.Data.LineString(event.overlay.getPath().getArray()) | |
| })); | |
| break; | |
| case google.maps.drawing.OverlayType.CIRCLE: | |
| map.data.add(new google.maps.Data.Feature({ | |
| properties: { | |
| radius: event.overlay.getRadius() | |
| }, | |
| geometry: new google.maps.Data.Point(event.overlay.getCenter()) | |
| })); | |
| break; | |
| } | |
| }); | |
| google.maps.event.addDomListener(document.getElementById('save'), 'click', function() { | |
| map.data.toGeoJson(function(obj) { | |
| document.getElementById('geojson').innerHTML = JSON.stringify(obj); | |
| }); | |
| }) | |
| loadPolygons(map); | |
| } | |
| // Apply listeners to refresh the GeoJson display on a given data layer. | |
| function bindDataLayerListeners(dataLayer) { | |
| dataLayer.addListener('addfeature', savePolygon); | |
| dataLayer.addListener('removefeature', savePolygon); | |
| dataLayer.addListener('setgeometry', savePolygon); | |
| } | |
| function loadPolygons(map) { | |
| var data = JSON.parse('{"type":"FeatureCollection","features":[{"type":"Feature","geometry":{"type":"Polygon","coordinates":[[[-74.10690307617188,40.75531957477602],[-73.98571014404297,40.74023389131268],[-74.04373168945312,40.67829474034605],[-74.12063598632812,40.69183258262447],[-74.10690307617188,40.75531957477602]]]},"properties":{}}]}'); | |
| map.data.forEach(function (f) { | |
| map.data.remove(f); | |
| }); | |
| map.data.addGeoJson(data) | |
| } | |
| function savePolygon() { | |
| map.data.toGeoJson(function (json) { | |
| //localStorage.setItem('geoData', JSON.stringify(json)); | |
| }); | |
| } | |
| </script> | |
| <script src="https://maps.googleapis.com/maps/api/js?key=YOUR_KEY&libraries=drawing&callback=initMap"></script> | |
| </html> |
Hi @emoran, you have to remove your google maps key from the example.
Thanks @richiwarmen just updated the snippet.
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Thanks for sharing this, the Feature snippet was very useful.