Skip to content


Switch branches/tags

Name already in use

A tag already exists with the provided branch name. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Are you sure you want to create this branch?

Leaflet Ant Path

leaflet-ant-path logo
Build Status NPM Downloads Codacy Badge npm version Bower version Greenkeeper badge

Creates a leaflet polyline with a 'ant-path' animated flux

Live demo here
example of the animation


Via NPM:

 npm install --save leaflet-ant-path 

Via Yarn:

 yarn add leaflet-ant-path

Via Bower:

 bower install leaflet-ant-path

Or just download this source code


  • Leaflet >= 1

Browsers support

IE / Edge
IE / Edge
iOS Safari
iOS Safari
IE10-11, Edge => 12 >= 3 >= 8 >= 6 >= 6 >= 4 >= 10

*This list is based on the feature SVG filter

UMD compatible

Can be used with asynchronous module loaders and CommonJS packers

Using the plugin

It's just like a polyline:

    // Using the constructor...
    let antPolyline = new L.Polyline.AntPath(latlngs, options);
    // ... or use the factory
    antPolyline = L.polyline.antPath(latlngs, options);

Update: Using more Vectors

On this version you now can use diferent vector other than polyline, passing the factory to the option.use. Currently tested support:

// Using a polygon
const antPolygon = antPath([
  [51.509, -0.08],
  [51.503, -0.06],
  [51.51, -0.047]
], { use: L.polygon, fillColor: "red" });

// Using a circle
const antCircle = antPath(
  [51.508, -0.11],
    color: 'red',
    fillColor: '#f03',
    fillOpacity: 0.5,
    radius: 500

// Using a curve (Leaflet.curve plugin)
const antCurve = antPath([
  [50.54136296522163, 28.520507812500004],
  [52.214338608258224, 28.564453125000004],
  [48.45835188280866, 33.57421875000001],
  [50.680797145321655, 33.83789062500001],
  [47.45839225859763, 31.201171875],
  [48.40003249610685, 28.564453125000004],
  {use: L.curve, color: "red", fill: true })


Using with ES6 imports

    import { AntPath, antPath } from 'leaflet-ant-path';
    // Usethe constructor...
    let antPolyline = new AntPath(latlngs, options);
    // ... or use the factory
    antPolyline = antPath(latlngs, options);   

Using with AMD:

require(['leaflet-ant-path'], function(AntPathModule) {
    // Use the constructor ...
    let antPolyline = new AntPathModule.AntPath(latlngs, options);
    // ... or use the factory
    antPolyline = AntPathModule.antPath(latlngs, options);

Using with browserify:

    const { AntPath, antPath } = require('leaflet-ant-path');


The AntPath extends from the FeatureGroup and implements the Path interface. Initialise with the same options of a common Polyline, with some extra options, like the flux color.

name type example description
latlngs L.LatLng[] or Array[number, number] [ [0, 10], [-20, 0], ... ] A path (depends on vector used, default as in polyline constructor )
options Object {color: 'red', weight: 5, ...} Same as the vector choosen (default to polyline ) plus the extra options bellow
options.use Vector Layer factory Vector to use (default to L.polyline) The vector to enhance with the ant-path animation (check the compatibilty)
options.paused boolean true/false Starts with the animation paused (default: false)
options.reverse boolean true/false Defines if the flow follows or not the path order
options.hardwareAccelerated boolean true/false Makes the animation run with hardware acceleration (default: false)
options.pulseColor string #FF00FF Adds a color to the dashed flux (default: 'white')
options.delay string 120 Add a delay to the animation flux (default: 400)
options.dashArray [number, number] or string [15, 30] The size of the animated dashes (default: "10, 20"). See also the pattern


name returns description
pause() boolean Stops the animation
resume() booelan Resume the animation
reverse() this instance Reverses the animation flow
map(callback) new AntPath or extended class Iterates over the latlngs

Also have the same as the L.Polyline API and with the same behaviour. See it here.


ES6/ES2015 features

Thinking in the new features of JavaScript, and its new way of programing, AntPath has some nicely features to work with ES6.


When spread the path, you will receive it lat/lngs array;

    const antPathLayer = new AntPath(path, options);
    const anotherAntPath = new AntPath(path2, options);
    const latLngs = [...antPathLayer, ...anotherAntPath];


Use a for ... of ... to iterate over the path coordinates

for(let latLng of antPath) {
    // do something with it latLngs ...


You can create you custom 'class' based on the AntPath:

class CustomAntPath extends AntPath {

map method

AntPath has a map method as the Array, returning a new instance of AntPath (or the child class which extends it, because of its Functor property):

//New path with translated path
const newAnthPath = => latLng( + 1, pos.lng + 1));

With or without polyfills

The module provide two bundles, the full one, with some es6 polyfills (loaded by default when importing) and the lighter one without the polyfills. If you're already uses the following polyfills in your project:

  • core-js/es6/symbol
  • core-js/es6/reflect

Just use the lighter version (leaflet-ant-path.es6.js). If not, just use the full bundle.


Find any bug? Open a issue or make a PR!
Also, see the guide on how to contribute.


This project is under the MIT LICENSE