Created
January 21, 2016 21:56
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Pulsing markers in Mapbox GL JS
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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/v0.12.2/mapbox-gl.js'></script> | |
| <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.12.2/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.eyJ1IjoiYWp6ZWlnZXJ0IiwiYSI6IldLdVhKN1UifQ.43CCALwNLBzVybtPFvcaJQ'; | |
| var map = new mapboxgl.Map({ | |
| container: 'map', // container id | |
| style: 'mapbox://styles/mapbox/streets-v8', //stylesheet location | |
| zoom: 3, // starting zoom | |
| hash: true // updates the url to reflect map position | |
| }); | |
| var elevated_points = 'https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_110m_geography_regions_elevation_points.geojson' | |
| map.on('style.load', function(){ | |
| map.addSource('mountains', { | |
| 'type': 'geojson', | |
| 'data': elevated_points | |
| }); | |
| var baseLayout = { | |
| 'text-field': '#', | |
| 'text-font': ['Open Sans Extrabold', 'Arial Unicode MS Bold'], | |
| 'text-size': 40, | |
| // 'text-padding': 60, | |
| // 'text-allow-overlap': true, | |
| 'text-ignore-placement': true | |
| } | |
| var basePaint = { | |
| 'text-color': 'rgba(0,0,0,1)', | |
| 'text-opacity': 1, | |
| } | |
| map.addLayer({ | |
| 'id': 'mountains-pulse', | |
| 'type': 'symbol', | |
| 'source': 'mountains', | |
| 'layout': baseLayout, | |
| 'paint': basePaint | |
| }) | |
| map.addLayer({ | |
| 'id': 'mountains', | |
| 'type': 'symbol', | |
| 'source': 'mountains', | |
| 'layout': baseLayout, | |
| 'paint': basePaint | |
| }); | |
| map.setPaintProperty('mountains-pulse', 'text-color', 'yellow') | |
| map.setLayoutProperty('mountains-pulse', 'text-size', 40) | |
| var framesPerSecond = 30; | |
| var multiplier = 1; | |
| var opacity = .1; | |
| var textSize = 40; | |
| function pulseMarker(timestamp){ | |
| setTimeout(function() { | |
| requestAnimationFrame(pulseMarker) | |
| // console.log(timestamp) | |
| multiplier += .1; | |
| opacity -= ( .9 / framesPerSecond ); | |
| console.log(opacity); | |
| textSize += ( 50 / framesPerSecond ); | |
| map.setPaintProperty('mountains-pulse', 'text-opacity', opacity) | |
| map.setLayoutProperty('mountains-pulse', 'text-size', textSize) | |
| if (opacity <= 0.1) { | |
| opacity = 1; | |
| textSize = 40; | |
| } | |
| }, 1000 / framesPerSecond ); | |
| } | |
| pulseMarker(0); | |
| }) | |
| </script> | |
| </body> | |
| </html> |
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