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index.html
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<!DOCTYPE html>
<html>
<head>
<title>Layers Control Tutorial - Leaflet</title>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="shortcut icon" type="image/x-icon" href="docs/images/favicon.ico" />
<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css" integrity="sha512-puBpdR0798OZvTTbP4A8Ix/l+A4dHDD0DGqYW6RQ+9jxkRFclaxxQb/SJAWZfWAkuyeQUytO7+7N4QKrDh+drA==" crossorigin="" />
<script src="https://unpkg.com/[email protected]/dist/leaflet.js" integrity="sha512-QVftwZFqvtRNi0ZyCtsznlKSWOStnDORoefr1enyq5mVL4tmKB3S/EnC3rRJcxCPavG10IcrVGSmPh6Qw5lwrg==" crossorigin=""></script>
<script src='https://api.tiles.mapbox.com/mapbox.js/plugins/leaflet-omnivore/v0.3.1/leaflet-omnivore.min.js'></script>
<link rel="stylesheet" href="css/bootstrap.css" />
<script src='http://bbecquet.github.io/Leaflet.PolylineDecorator/dist/leaflet.polylineDecorator.js'></script>
<style>
#map {
width: 100%;
height: 100%;
}
.container-fluid {
height: 100vh;
}
.repo {
position: absolute;
left: 10px;
bottom: 10px;
background: rgba(255, 255, 255, 0.9);
border: 1px solid #CCC;
-webkit-border-radius: 3px;
-moz-border-radius: 3px;
border-radius: 3px;
z-index: 1000;
padding: 4px 8px;
}
</style>
</head>
<body>
<div class="container-fluid d-flex flex-column">
<div class="row flex-grow-0">
<div class="col-12 py-2">
<div class="input-group">
<input type="text" class="form-control" placeholder="Latitude"
id="lat" value="-20.135896">
<input type="text" class="form-control" placeholder="Longitude"
id="lng" value="-44.123509">
<div class="input-group-append" id="button-addon4">
<button class="btn btn-primary" type="button"
onclick="calculate()">Calculate
</button>
</div>
</div>
</div>
</div>
<div class="row flex-grow-1">
<div class="col-12">
<div id='map'></div>
</div>
</div>
</div>
<div class="repo small d-flex align-content-center">
<svg height="20" class="octicon octicon-mark-github" viewBox="0 0 16 16"
version="1.1" width="20" aria-hidden="true">
<path fill-rule="evenodd"
d="M8 0C3.58 0 0 3.58 0 8c0 3.54 2.29 6.53 5.47 7.59.4.07.55-.17.55-.38 0-.19-.01-.82-.01-1.49-2.01.37-2.53-.49-2.69-.94-.09-.23-.48-.94-.82-1.13-.28-.15-.68-.52-.01-.53.63-.01 1.08.58 1.23.82.72 1.21 1.87.87 2.33.66.07-.52.28-.87.51-1.07-1.78-.2-3.64-.89-3.64-3.95 0-.87.31-1.59.82-2.15-.08-.2-.36-1.02.08-2.12 0 0 .67-.21 2.2.82.64-.18 1.32-.27 2-.27.68 0 1.36.09 2 .27 1.53-1.04 2.2-.82 2.2-.82.44 1.1.16 1.92.08 2.12.51.56.82 1.27.82 2.15 0 3.07-1.87 3.75-3.65 3.95.29.25.54.73.54 1.48 0 1.07-.01 1.93-.01 2.2 0 .21.15.46.55.38A8.013 8.013 0 0 0 16 8c0-4.42-3.58-8-8-8z"></path>
</svg>
<a href="https://github.com/dieegom/brumadinho_location" class="ml-2">https://github.com/dieegom/brumadinho_location</a></h6>
</div>
<script>
function createMarker(name, point) {
return L.marker(point).bindPopup(
"<b>" + name + "</b>" +
"<br/>Latitude:" + point.lat +
"<br/>Longitude:" + point.lng
).addTo(map);
}
function drawVector(pointA, pointB) {
createMarker('Initial Location', pointA);
createMarker('Estimated Final Location', pointB);
const line = new L.Polyline([pointA, pointB], {
color: 'red',
weight: 3,
opacity: 0.5,
smoothFactor: 1
}).addTo(map);
L.polylineDecorator(line, {
patterns: [
{
offset: '100%',
repeat: 0,
symbol: L.Symbol.arrowHead({
pixelSize: 15,
polygon: false,
pathOptions: {
stroke: true,
color: 'red',
weight: 3,
opacity: 0.5,
smoothFactor: 1
}
})
}
]
}).addTo(map);
}
async function calculate() {
const srcLat = document.getElementById("lat").value;
const srcLng = document.getElementById("lng").value;
const srcPoint = new L.LatLng(srcLat, srcLng);
const jeisao = {"lat": srcLat, "lng": srcLng};
const params = new URLSearchParams();
params.append('lat', srcLat);
params.append('lng', srcLng);
const result = await fetch('/calculate', {
method: 'POST',
headers: {
'Accept': 'application/json',
'Content-Type': 'application/json'
},
body: JSON.stringify(jeisao)
});
const data = await result.json();
const destPoint = new L.LatLng(data.lat, data.lng);
drawVector(srcPoint, destPoint);
}
function initMap() {
const mbAttr = 'Map data © <a href="https://www.openstreetmap.org/">OpenStreetMap</a> contributors, ' +
'<a href="https://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, ' +
'Imagery © <a href="https://www.mapbox.com/">Mapbox</a>',
mbUrl = 'https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token=pk.eyJ1IjoiY2F1ZXRoZW5vcmlvIiwiYSI6ImNqcmZlOTVzbDI4MXU0NHA4Y3NnM3Q2dTkifQ.dB1mAnvB0oqVvb-k_ZNbcQ';
const satelliteLayer = L.tileLayer(mbUrl, {
id: 'mapbox.satellite',
attribution: mbAttr
});
const map = L.map('map', {
layers: [satelliteLayer]
});
const areaQuenteLayer = omnivore.kml('area_quente.kml').on(
'ready', function () {
map.fitBounds(areaQuenteLayer.getBounds());
areaQuenteLayer.addTo(map);
}
);
return map
}
document.addEventListener("DOMContentLoaded", function() {
window.map = initMap();
});
</script>
</body>
</html>