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site.js
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site.js
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var map = L.map('map', { });
if (location.hash) {
var h = location.hash.substr(1).split('/');
map.setView([h[1], h[2]], h[0]);
} else {
map.setView([15, -15], 2);
}
var overpass_server = '//overpass-api.de/api/'; //'https://overpass.kumi.systems/api/';
var days_to_show = 7;
var layer = null;
map.attributionControl.setPrefix('');
L.hash(map);
L.tileLayer('https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
maxZoom: 19,
attribution: "<a target='_blank' href='https://www.openstreetmap.org/copyright' style='background:url(data:image/png;base64,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) no-repeat; background-size:26px 26px;width:24px;height:24px;display:block;z-index:1000;bottom:2px;right:5px;bottom:5px;position:absolute;'></a>"
})
.addTo(map);
function updateMap() {
if (map.getZoom() > 11) {
d3.select('#map').classed('faded', true);
d3.select('#zoom-in').classed('hide', true);
run();
} else {
d3.select('#map').classed('faded', true);
d3.select('#zoom-in').classed('hide', false);
abort();
layer && map.removeLayer(layer);
layer = null;
}
}
updateMap();
var xhr;
function run() {
if (xhr) xhr.abort();
var bounds = map.getBounds();
var bbox = bounds.getSouthWest().lat + ',' +
bounds.getSouthWest().lng + ',' +
bounds.getNorthEast().lat + ',' +
bounds.getNorthEast().lng;
var last_week = (new Date(new Date()-1000*60*60*24*days_to_show)).toISOString();
//var overpass_query = '[out:json];way(' + bbox + ')(newer:"' + last_week + '");out meta;node(w);out skel;node(' + bbox + ')(newer:"' + last_week + '");out meta;';
var overpass_query = '[adiff:"' + last_week + '"][bbox:' + bbox + '][out:xml][timeout:22];way->.ways;(.ways>;node;);out meta;.ways out geom meta;';
xhr = d3.xml(overpass_server+'interpreter?data='+overpass_query
).on('load', function(data) {
var newData = document.implementation.createDocument(null, 'osm');
var oldData = document.implementation.createDocument(null, 'osm');
var elements = data.querySelectorAll('action');
for (var i=0; i<elements.length; i++) {
var element = elements[i];
switch (element.getAttribute('type')) {
case 'create':
newData.documentElement.appendChild(element.querySelector("*"));
break;
case 'modify':
case 'delete':
var newElement = element.querySelector('new > *');
var oldElement = element.querySelector('old > *');
// fake changeset id on new data
var newestTs = +new Date(newElement.getAttribute("timestamp"));
if (newElement.tagName == 'way') {
// inherit meta data from newest child node
var nds = newElement.getElementsByTagName('nd');
for (var j=0; j<nds.length; j++) {
var nodeId = nds[j].getAttribute('ref');
var node = newData.querySelector('node[id="'+nodeId+'"]');
if (node === null) continue;
var nodeTs = +new Date(node.getAttribute("timestamp"));
if (nodeTs > newestTs) {
newElement.setAttribute('changeset', node.getAttribute('changeset'));
newElement.setAttribute('user', node.getAttribute('user'));
newElement.setAttribute('uid', node.getAttribute('uid'));
newElement.setAttribute('timestamp', node.getAttribute('timestamp'));
}
}
}
// fake changeset id on old data
oldElement.setAttribute('changeset', newElement.getAttribute('changeset'));
oldElement.setAttribute('user', newElement.getAttribute('user'));
oldElement.setAttribute('uid', newElement.getAttribute('uid'));
oldElement.setAttribute('timestamp', newElement.getAttribute('timestamp'));
if (element.getAttribute('type') == 'modify')
newData.documentElement.appendChild(newElement);
oldData.documentElement.appendChild(oldElement);
}
}
var newGeojson = osmtogeojson.toGeojson(newData);
var oldGeojson = osmtogeojson.toGeojson(oldData);
oldGeojson.features.forEach(function(feature) {
feature.properties.__is_old__ = true;
});
d3.select('#map').classed('faded', false);
layer && map.removeLayer(layer);
var datescale = d3.time.scale()
.domain([new Date(last_week), new Date()])
.range([0, 1]);
var colint = d3.interpolateRgb('#777', '#f00');
function setStyle(f) {
return {
color: colint(datescale(new Date(f.properties.meta.timestamp))),
opacity: f.properties.__is_old__ === true ? 0.2 : 1,
weight: 3
}
};
layer = new L.GeoJSON({
type: 'FeatureCollection',
features: [].concat(oldGeojson.features).concat(newGeojson.features)
}, {
style: setStyle,
pointToLayer: function (feature, latlng) {
return L.circleMarker(latlng, {radius: 8});
}})
.addTo(map);
var bytime = [];
var changesets = {};
layer.eachLayer(function(l) {
if (!l.feature.properties.meta.changeset)
return;
changesets[l.feature.properties.meta.changeset] = changesets[l.feature.properties.meta.changeset] || {
id: l.feature.properties.meta.changeset,
time: new Date(l.feature.properties.meta.timestamp),
user: l.feature.properties.meta.user,
comment: '',
features: []
};
changesets[l.feature.properties.meta.changeset].features.push(l);
});
for (var k in changesets) {
bytime.push(changesets[k]);
}
layer.on('click', function(e) {
click({ feature: e.layer });
});
bytime.sort(function(a, b) {
return (+b.time) - (+a.time);
});
var results = d3.select('#results');
var allresults = results
.selectAll('div.result')
.data(bytime, function(d) {
return d.id;
})
.attr('class', 'result')
.style('color', function(l) {
return colint(datescale(l.time));
});
allresults.exit().remove();
var rl = allresults.enter()
.append('div')
.attr('class', 'result')
.style('color', function(l) {
return colint(datescale(l.time));
});
allresults.order();
function click(d) {
results
.selectAll('div.result')
.classed('active', function(_) {
return _.id == (d.id || d.feature.feature.properties.meta.changeset);
});
layer.eachLayer(function(l) {
layer.resetStyle(l);
})
var id = d.id ? d.id : d.feature.feature.properties.meta.changeset;
layer.eachLayer(function(l) {
if (l.feature.properties.meta.changeset == id) {
l.setStyle({ color: '#0f0' });
}
});
}
rl.on('click', click);
rl.append('span')
.classed('load', true)
.html('→ ');
rl.append('a').text(function(d) {
return d.user;
})
.attr('target', '_blank')
.attr('href', function(d) {
return '//openstreetmap.org/user/' + d.user;
});
rl.append('span').text(' ');
rl.append('span').attr('class', 'date').text(function(d) {
return moment(d.time).format('MMM Do YYYY, h:mm:ss a');
});
rl.append('span').text(' ');
rl.append('a').attr('class', 'reveal').text('«zoom»')
.attr('target', '_blank')
.attr('href', '#')
.on('click', function(d) {
d3.event.preventDefault();
map.fitBounds(d.features.reduce(function(a, b) {
return a.extend(b.getBounds());
}, new L.LatLngBounds()));
});
rl.append('span').text(' ');
rl.append('a').attr('class', 'reveal').text('«achavi»')
.attr('target', '_blank')
.attr('href', function(d) {
return 'https://overpass-api.de/achavi/?changeset=' + d.id;
});
rl.append('div').attr('class', 'changeset');
var queue = d3.queue();
var changesetIds = rl.data()
.map(function(d) {return d.id})
.filter(function(changesetId) { return changesetId !== ''; });
while (changesetIds.length > 0) {
queue.defer(d3.xml, 'https://www.openstreetmap.org/api/0.6/changesets?changesets=' + changesetIds.splice(0,100).join(','));
}
queue.awaitAll(function(error, xmls) {
if (error) return console.error(error);
var changesets = {};
xmls.forEach(function(xml) {
var css = xml.getElementsByTagName('changeset');
for (var i=0; i<css.length; i++) {
var cid = css[i].getAttribute('id');
changesets[cid] = {
discussionCount: +css[i].getAttribute("comments_count")
};
var tag = css[i].querySelector('tag[k="comment"]');
if (tag)
changesets[cid].comment = tag.getAttribute('v');
}
});
rl.select('span.load').each(function(d) {
if (changesets[d.id].discussionCount > 0)
d3.select(this).html('⇒ ');
});
rl.select('div.changeset').each(function(d) {
d3.select(this).html(
'<a href="https://openstreetmap.org/browse/changeset/' + d.id + '" target="_blank" class="comment">' +
(changesets[d.id].comment || '<span class="no-comment">—</span>') +
'</a>'
);
});
});
}).get();
}
function abort() {
if (xhr) {
xhr.abort();
xhr=null;
}
var results = d3.select('#results');
var allresults = results
.selectAll('div.result')
.data([])
.exit().remove();
}
var timeOutId = 0;
map.on('dragend ', function(event) {
if (event.distance < 12) return;
clearTimeout(timeOutId);
timeOutId = setTimeout(updateMap, 500);
});
map.on('zoomend', function() {
clearTimeout(timeOutId);
timeOutId = setTimeout(updateMap, 500);
});
d3.select('h2 select')
.on('change', function() {
switch (this.selectedIndex) {
case 0: // yesterday
days_to_show = 1;
break;
case 1: // last 3 days
days_to_show = 3;
break;
case 2: // last week
days_to_show = 7;
break;
case 3: // last month
days_to_show = 30;
break;
}
updateMap();
});