@maplibre/maplibre-gl-compare
v0.5.0
Published
Swipe and sync between two MapLibre maps
Downloads
1,193
Readme
MapLibre GL Compare
Swipe and sync between two MapLibre maps. This plugin was originally developed for Mapbox (https://github.com/mapbox/mapbox-gl-compare) and was migrated to MapLibre after Mapbox changed its license.
Code example
Examples
Full Example without the need of a token
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Swipe between maps</title>
<meta
name="viewport"
content="initial-scale=1,maximum-scale=1,user-scalable=no"
/>
<script src="../.env"></script>
<script src="https://unpkg.com/[email protected]/dist/maplibre-gl.js"></script>
<link
href="https://unpkg.com/[email protected]/dist/maplibre-gl.css"
rel="stylesheet"
/>
<style>
body {
margin: 0;
padding: 0;
}
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
</head>
<body>
<style>
body {
overflow: hidden;
}
body * {
-webkit-touch-callout: none;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
.map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
<script src="maplibre-gl-compare.js"></script>
<link rel="stylesheet" href="maplibre-gl-compare.css" type="text/css" />
<div id="comparison-container">
<div id="before" class="map"></div>
<div id="after" class="map"></div>
</div>
<script>
var beforeMap = new maplibregl.Map({
container: "before",
style: "https://demotiles.maplibre.org/style.json",
center: [7.221275, 50.326111],
zoom: 5,
});
var afterMap = new maplibregl.Map({
container: "after",
style:
"https://vectortiles.geo.admin.ch/styles/ch.swisstopo.leichte-basiskarte.vt/style.json",
center: [7.221275, 50.326111],
zoom: 5,
});
// A selector or reference to HTML element
var container = "#comparison-container";
var map = new maplibregl.Compare(beforeMap, afterMap, container, {
// Set this to enable comparing two maps by mouse movement:
// m ousemove: true
});
</script>
</body>
</html>Full Example with the need of a token
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>Swipe between maps</title>
<meta
name="viewport"
content="initial-scale=1,maximum-scale=1,user-scalable=no"
/>
<script src="../.env"></script>
<script src="https://unpkg.com/[email protected]/dist/maplibre-gl.js"></script>
<link
href="https://unpkg.com/[email protected]/dist/maplibre-gl.css"
rel="stylesheet"
/>
<style>
body {
margin: 0;
padding: 0;
}
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
</head>
<body>
<style>
body {
overflow: hidden;
}
body * {
-webkit-touch-callout: none;
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
user-select: none;
}
.map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
</style>
<script src="maplibre-gl-compare.js"></script>
<link rel="stylesheet" href="maplibre-gl-compare.css" type="text/css" />
<div id="comparison-container">
<div id="before" class="map"></div>
<div id="after" class="map"></div>
</div>
<script>
var beforeMap = new maplibregl.Map({
container: "before",
style:
"https://api.maptiler.com/maps/hybrid/style.json?key=get_your_own_OpIi9ZULNHzrESv6T2vL",
center: [7.221275, 50.326111],
zoom: 15,
});
var afterMap = new maplibregl.Map({
container: "after",
style:
"https://api.maptiler.com/maps/streets/style.json?key=get_your_own_OpIi9ZULNHzrESv6T2vL",
center: [7.221275, 50.326111],
zoom: 15,
});
// A selector or reference to HTML element
var container = "#comparison-container";
var map = new maplibregl.Compare(beforeMap, afterMap, container, {
// Set this to enable comparing two maps by mouse movement:
// m ousemove: true
});
</script>
</body>
</html>Usage
var beforeMap = new maplibregl.Map({
container: "before",
style: "https://demotiles.maplibre.org/style.json",
center: [7.221275, 50.326111],
zoom: 5,
});
var afterMap = new maplibregl.Map({
container: "after",
style:
"https://vectortiles.geo.admin.ch/styles/ch.swisstopo.leichte-basiskarte.vt/style.json",
center: [7.221275, 50.326111],
zoom: 5,
});
// A selector or reference to HTML element
var container = '#comparison-container';
var map = new maplibregl.Compare(beforeMap, afterMap, container, {
mousemove: true, // Optional. Set to true to enable swiping during cursor movement.
orientation: 'vertical' // Optional. Sets the orientation of swiper to horizontal or vertical, defaults to vertical
});Methods
compare = new mapboxgl.Compare(beforeMap, afterMap, container, {
mousemove: true, // Optional. Set to true to enable swiping during cursor movement.
orientation: 'vertical' // Optional. Sets the orientation of swiper to horizontal or vertical, defaults to vertical
});
// Get Current position - this will return the slider's current position, in pixels
compare.currentPosition;
// Set Position - this will set the slider at the specified (x) number of pixels from the left-edge or top-edge of viewport based on swiper orientation
compare.setSlider(x);
//Listen to slider movement - and return current position on each slideend
compare.on('slideend', (e) => {
console.log(e.currentPosition);
});
//Remove - this will remove the compare control from the DOM and stop synchronizing the two maps.
compare.remove();Live examples
Compare swisstopo with demotiles
Installation
Native
Add tags referencing maplibre-gl-compare after adding maplibre-gl to your website:
<!-- MapLibre GL -->
<link href="https://unpkg.com/[email protected]/dist/maplibre-gl.css" rel='stylesheet' />
<link href="maplibre-gl-compare.css" rel='stylesheet' />
<script src="https://unpkg.com/[email protected]/dist/maplibre-gl.js"></script>
<script src="maplibre-gl-compare.js"></script>Node
Motivation
This project makes it possible to easily compare two maps.
API Reference
Bug Reports & Feature Requests
Please use the issue tracker to report any bugs or file feature requests.