基于Leaflet的轨迹模拟回放

在gis场景中，轨迹回放是一个很常见的场景。比如在导航软件中，在行程结束后根据运动轨迹生成运动图，在keep软件中，会自动记录用户的锻炼轨迹，在结束后可以看到自己的运动轨迹等等。这些需求都是设备在运行中自动记录相应的点，在结合gis模拟即可。本文将采用Leaflet进行模拟轨迹回放。

环境：

1、leaflet.js

2、MovingMarker.js 插件

一、创建地图

// initialize the map on the "map" div with a given center and zoom
var map = new L.Map('map', {
  zoom: 6,
  minZoom: 3,
});

// create a new tile layer
var tileUrl = 'http://localhost:8086/data/basemap_water/{z}/{x}/{y}.png',
layer = new L.TileLayer(tileUrl,
{
    attribution: 'Maps © <a href=\"www.openstreetmap.org/copyright\">OpenStreetMap</a> contributors',
    maxZoom: 18
});

// add the layer to the map
map.addLayer(layer);

二、设置行为轨迹

var parisKievLL = [[28.8567, 112.3508], [30.45, 130.523333]];
var londonParisRomeBerlinBucarest = [[31.507222, 110.1275], [28.8567, 112.3508],
[31.9, 112.5], [31.516667, 113.383333], [31.4166,126.1]];
var londonBrusselFrankfurtAmsterdamLondon = [[21.507222, 110.1275], [30.85, 114.35],
[30.116667, 118.683333], [22.366667, 114.9], [31.507222, 110.1275]];
var barcelonePerpignanPauBordeauxMarseilleMonaco = [
    [21.385064, 112.173403],
    [23.698611, 114.895556],
    [24.3017, 114.3686],
    [34.837912, 115.579541],
    [33.296346, 116.369889],
    [35.738418, 116.424616]
];
map.fitBounds(londonParisRomeBerlinBucarest);

三、设置运动的marker

var marker1 = L.Marker.movingMarker(parisKievLL, [10000]).addTo(map);
L.polyline(parisKievLL).addTo(map);
marker1.once('click', function () {
    marker1.start();
    marker1.closePopup();
    marker1.unbindPopup();
    marker1.on('click', function() {
        if (marker1.isRunning()) {
            marker1.pause();
        } else {
            marker1.start();
        }
    });
    setTimeout(function() {
        marker1.bindPopup('<b>点我暂停 !</b>').openPopup();
    }, 2000);
});

marker1.bindPopup('<b>点我开始!</b>', {closeOnClick: false});
marker1.openPopup();

四、效果如下所示：

基于Leaflet的轨迹模拟回放

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