mapbox-gl/js/style/animation_loop.js

A WebGL interactive maps library

'use strict';

module.exports = AnimationLoop;

function AnimationLoop() {
    this.n = 0;
    this.times = [];
}

// Are all animations done?
AnimationLoop.prototype.stopped = function() {
    this.times = this.times.filter(function(t) {
        return t.time >= (new Date()).getTime();
    });
    return !this.times.length;
};

// Add a new animation that will run t milliseconds
// Returns an id that can be used to cancel it layer
AnimationLoop.prototype.set = function(t) {
    this.times.push({ id: this.n, time: t + (new Date()).getTime() });
    return this.n++;
};

// Cancel an animation
AnimationLoop.prototype.cancel = function(n) {
    this.times = this.times.filter(function(t) {
        return t.id !== n;
    });
};