Created
March 15, 2017 20:24
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GTA V5 style easing
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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/v0.33.1/mapbox-gl.js'></script> | |
| <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.33.1/mapbox-gl.css' rel='stylesheet' /> | |
| <link href="https://fonts.googleapis.com/css?family=Overpass+Mono" rel="stylesheet"> | |
| <style> | |
| body { | |
| margin:0; | |
| padding:0; | |
| font: 14px/20px 'Overpass Mono'; | |
| } | |
| #map { position:absolute; top:0; bottom:0; width:100%; } | |
| #top-left { | |
| position:absolute; | |
| top: 5px; | |
| left: 5px; | |
| } | |
| button { | |
| font: inherit; | |
| background: yellow; | |
| border: 1px solid #000; | |
| } | |
| </style> | |
| </head> | |
| <body> | |
| <div id='map'></div> | |
| <div id='top-left'> | |
| <button id='switch'>switch</button> | |
| <button id='restart'>restart</button> | |
| steps <input id='stepsRange' type='range' min=1 max=5 value=3 /> | |
| duration <input id='durationRange' type='range' min=500 max=5000 value=3000 /> | |
| </div> | |
| <script> | |
| mapboxgl.accessToken = 'pk.eyJ1IjoidG1jdyIsImEiOiJIZmRUQjRBIn0.lRARalfaGHnPdRcc-7QZYQ'; | |
| var start = [ | |
| -73.99725437164307, | |
| 40.71934725302753 | |
| ]; | |
| var end = [ | |
| -73.94097089767456, | |
| 40.819119488867344 | |
| ]; | |
| var mapDiv = document.getElementById('map'); | |
| var map = new mapboxgl.Map({ | |
| container: 'map', | |
| style: 'mapbox://styles/mapbox/streets-v9', | |
| center: start, | |
| zoom: 20 | |
| }); | |
| document.getElementById('restart').addEventListener('click', () => { | |
| map.setCenter(start); | |
| map.setZoom(20); | |
| }); | |
| var sample = 0; | |
| function easingFn(steps) { | |
| return n => { | |
| let roundedStep = Math.floor(n * steps) / steps; | |
| let remainder = (n * steps) % 1; | |
| let curve = (Math.tanh((remainder - 0.5) * 10) + 1) / 2; | |
| return roundedStep + (curve / (steps)); | |
| }; | |
| }; | |
| var steps = 3; | |
| var duration = 3000; | |
| document.getElementById('stepsRange').addEventListener('change', (e) => { | |
| steps = parseInt(e.target.value, 10); | |
| }); | |
| document.getElementById('durationRange').addEventListener('change', (e) => { | |
| duration = parseInt(e.target.value, 10); | |
| }); | |
| let runSeries = () => { | |
| mapDiv.style.transition = 'filter 3000ms ease-in-out'; | |
| mapDiv.style.filter = 'blur(3px) sepia(0.2)'; | |
| map.zoomTo(14, { | |
| duration: duration, | |
| easing: easingFn(steps) | |
| }); | |
| setTimeout(() => { | |
| map.panTo(end, { | |
| duration: duration, | |
| easing: easingFn(2) | |
| }); | |
| }, duration); | |
| setTimeout(() => { | |
| mapDiv.style.filter = 'blur(0px)'; | |
| map.zoomTo(18, { | |
| duration: duration, | |
| easing: easingFn(steps) | |
| }); | |
| }, duration * 2); | |
| }; | |
| document.getElementById('switch') | |
| .addEventListener('click', runSeries); | |
| </script> | |
| </body> | |
| </html> |
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