Mercator distortion with lines

by Stefano

HTML

<script src="https://unpkg.com/[email protected]/dist/leaflet.js"></script>
<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css">
<script src="https://cdn.jsdelivr.net/npm/@turf/turf@5/turf.min.js"></script>
<div id="map"></div>

CSS

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  width: 100%;
  height: 100%;
}

#map {
  width: 100%;
  height: 100%;
}

JavaScript

const center = turf.point(getLeafletCoords([43.12831626497193, 1.259286403656006]));

var map = L.map('map', {
	center: getLeafletCoords(center),
  zoom: 17,
  layers: [ L.tileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png') ],
});

const distance = .1;

L.circle(getLeafletCoords(center), {
  color: 'purple',
  fillColor: 'purple',
  fillOpacity: 0.5,
  radius: 20
}).addTo(map);

const ne = turf.rhumbDestination(center, distance, 45);
const sw = turf.rhumbDestination(center, distance, -135);
const nw = turf.rhumbDestination(center, distance, 135);
const se = turf.rhumbDestination(center, distance, -45);

L.polyline([getLeafletCoords(ne), getLeafletCoords(sw)]).setStyle({color: 'green', weight: 5}).addTo(map);
L.polyline([getLeafletCoords(nw), getLeafletCoords(se)]).setStyle({color: 'red', weight: 5}).addTo(map);


function getLeafletCoords(point) {
	return turf.getCoords(point).slice().reverse();
}