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Use feature state hover to change SDF color
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset='utf-8' /> | |
| <title></title> | |
| <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' /> | |
| <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.49.0/mapbox-gl.js'></script> | |
| <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.49.0/mapbox-gl.css' rel='stylesheet' /> | |
| <style> | |
| body { margin:0; padding:0; } | |
| #map { position:absolute; top:0; bottom:0; width:100%; } | |
| </style> | |
| </head> | |
| <body> | |
| <div id='map'></div> | |
| <script> | |
| mapboxgl.accessToken = 'pk.eyJ1IjoibWFsLXdvb2QiLCJhIjoiY2oyZ2t2em50MDAyMzJ3cnltMDFhb2NzdiJ9.X-D4Wvo5E5QxeP7K_I3O8w'; | |
| var map = new mapboxgl.Map({ | |
| container: 'map', // container id | |
| style: 'mapbox://styles/mapbox/streets-v9', //stylesheet location | |
| center: [-74.50, 40], // starting position | |
| zoom: 2 // starting zoom | |
| }); | |
| var hoveredAirplaneId = null; | |
| map.on('load', function(){ | |
| map.loadImage('https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Airplane_silhouette.svg/200px-Airplane_silhouette.svg.png', function(error, image) { | |
| if (error) throw error; | |
| map.addImage('airplane', image, {sdf: true}); | |
| map.addLayer({ | |
| "id": "airplanes", | |
| "type": "symbol", | |
| "source": { | |
| type: 'geojson', | |
| data: './regions-points.geojson' | |
| }, | |
| "layout": { | |
| "icon-image": "airplane", | |
| "icon-size": 1, | |
| }, | |
| "paint": { | |
| "icon-color": ['case', | |
| ["boolean", ["feature-state", "hover"], false], | |
| "#fff", | |
| ['match',['get', 'region'], | |
| 'Oceania', '#51bbd6', | |
| 'South America', '#77deff', | |
| 'North America', '#ee986f', | |
| 'Australia', "#3751ff", | |
| 'Africa', "#ff7da8", | |
| 'Europe', "#bdffbb", | |
| 'Asia', "#c48aff", | |
| 'Antartica', "#ffcb7e", | |
| '#000']], | |
| "icon-halo-color": "#000", | |
| "icon-halo-width": 3, | |
| "icon-halo-blur": 1 | |
| } | |
| }); | |
| map.on("mousemove", "airplanes", function(e) { | |
| if (e.features.length > 0) { | |
| if (hoveredAirplaneId) { | |
| map.setFeatureState({source: 'airplanes', id: hoveredAirplaneId}, { hover: false}); | |
| } | |
| hoveredAirplaneId = e.features[0].id; | |
| map.setFeatureState({source: 'airplanes', id: hoveredAirplaneId}, { hover: true}); | |
| } | |
| }); | |
| map.on("mouseleave", "airplanes", function() { | |
| if (hoveredAirplaneId) { | |
| map.setFeatureState({source: 'airplanes', id: hoveredAirplaneId}, { hover: false}); | |
| } | |
| hoveredStateId = null; | |
| }); | |
| }); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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