osm-activity/index.html at gh-pages · lukasmartinelli/osm-activity · GitHub

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<!DOCTYPE html>
<html>
  <head>
    <meta charset=utf-8 />
    <title>OSM Activity</title>
    <meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
    <style>
      body { margin:0; padding:0; }
      #map { position:absolute; top:0; bottom:0; width:100%; }
      #github-button { position: absolute; top: 15px; left: 15px; z-index: 1000; }
      .mapboxgl-popup {
      font: 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;
      }
    </style>
    <script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
    <script src='https://cdnjs.cloudflare.com/ajax/libs/Turf.js/3.0.14/turf.min.js'></script>
    <script src='https://api.mapbox.com/mapbox-gl-js/plugins/mapbox-gl-supported/v1.2.0/mapbox-gl-supported.js'></script>
    <script src='https://api.tiles.mapbox.com/mapbox-gl-js/v0.21.0/mapbox-gl.js'></script>
    <link href='https://api.tiles.mapbox.com/mapbox-gl-js/v0.21.0/mapbox-gl.css' rel='stylesheet' />
  </head>
  <body>
    <iframe id="github-button" src="https://ghbtns.com/github-btn.html?user=lukasmartinelli&repo=osm-activity&type=star&count=true&size=large" frameborder="0" scrolling="0" width="160px" height="30px"></iframe>
    <div id='map'></div>
    <script>
   mapboxgl.accessToken = 'pk.eyJ1IjoibW9yZ2Vua2FmZmVlIiwiYSI6IjIzcmN0NlkifQ.0LRTNgCc-envt9d5MzR75w';
   if (!mapboxgl.supported()) {
       alert('Your browser does not support Mapbox GL');
   }
   var map = new mapboxgl.Map({
     container: 'map',
     style: 'mapbox://styles/morgenkaffee/cirypw54h004pgym67fet9chq',
     center: [8.538961, 47.372476],
     zoom: 1.1,
     hash: true,
     minZoom: 1,
     maxZoom: 11,
   });
   map.addControl(new mapboxgl.Navigation());

   function httpGetAsync(theUrl, callback) {
     var xmlHttp = new XMLHttpRequest();
     xmlHttp.onreadystatechange = function() {
       if (xmlHttp.readyState == 4 && xmlHttp.status == 200)
         callback(xmlHttp.responseText);
     }
     xmlHttp.open("GET", theUrl, true); // true for asynchronous
     xmlHttp.send(null);
   }


   google.charts.load('current', {
     packages: ['corechart', 'line']
   });
   var bboxLayers = ['tile_updates_1', 'tile_updates_2', 'tile_updates_3', 'tile_updates_4', 'tile_updates_5', 'tile_updates_6', 'tile_updates_7'];
   map.on('click', function(e) {
     var features = map.queryRenderedFeatures(e.point, {
       layers: bboxLayers
     });

     if (!features.length) {
       return;
     }

     var feature = features[0];
     var props = feature.properties;
     var tile = [props.tile_x, props.tile_y, props.tile_z];
     var ancestor = getAncestor(tile);
     var centroid = turf.centroid(feature);

     httpGetAsync('http://osm-activity.lukasmartinelli.ch/tiles/history/' + ancestor[2] + '/' + ancestor[0] + '/' + ancestor[1] + '.json', function(body) {
       var tiles = JSON.parse(body);
       var tileHistory = tiles[tile.join('/')];

       var popup = new mapboxgl.Popup()
         .setLngLat(centroid.geometry.coordinates)
         .setHTML('<div id="chart_div"></div>')
         .addTo(map);

       var data = new google.visualization.DataTable();
       data.addColumn('date', 'time');
       data.addColumn('number', 'changes');
       tileHistory.forEach(function(changes, idx) {
         // Skip the beginnings
         if (idx > 24) {
           var date = new Date(2006 + (idx / 12), (idx) % 12);
           console.log(date.toDateString());
           data.addRow([date, changes])
         }
       });
       var options = {
         legend: 'none',
         width: 550,
         height: 300,
         hAxis: {
           title: 'Time'
         },
         vAxis: {
           title: 'Changes'
         },
         colors: ['#238443'],
         trendlines: {
           0: {
             type: 'linear',
             color: '#addd8e',
             opacity: .7
           }
         }
       };

       var chart = new google.visualization.LineChart(document.getElementById('chart_div'));
       chart.draw(data, options);
     });
   });


   // https://github.com/mapbox/tilebelt/blob/master/index.js
   function getParent(tile) {
     // top left
     if (tile[0] % 2 === 0 && tile[1] % 2 === 0) {
       return [tile[0] / 2, tile[1] / 2, tile[2] - 1];
     }
     // bottom left
     if ((tile[0] % 2 === 0) && (!tile[1] % 2 === 0)) {
       return [tile[0] / 2, (tile[1] - 1) / 2, tile[2] - 1];
     }
     // top right
     if ((!tile[0] % 2 === 0) && (tile[1] % 2 === 0)) {
       return [(tile[0] - 1) / 2, (tile[1]) / 2, tile[2] - 1];
     }
     // bottom right
     return [(tile[0] - 1) / 2, (tile[1] - 1) / 2, tile[2] - 1];
   }

   function getAncestor(tile) {
     var parent = getParent(tile);
     if (parent[2] <= 5) {
       return parent;
     } else {
       return this.getAncestor(parent);
     }
   }

   map.on('mousemove', function(e) {
     var features = map.queryRenderedFeatures(e.point, {
       layers: bboxLayers
     });
     map.getCanvas().style.cursor = (features.length) ? 'pointer' : '';
   });
    </script>
  </body>
</html>