详解微信小程序轨迹回放实现及遇到的坑

微信小程序轨迹回放主要使用到polyline进行划线操作,以及使用marker去进行小车移动操作。效果图如下:

具体实现代码:

trackplay.wxml文件

<!--pages/tracker/tracker.wxml-->

<map id="mymap" longitude="{{mapCenter.longitude}}" latitude="{{mapCenter.latitude}}" scale="{{scale}}" markers="{{markers}}" polyline="{{polylineSettings}}" include-points="polygons" setting="{{mapSettings}}" bindregionchange="updatedMap" max-scale="16">

<cover-view>{{showMessage}}</cover-view>

<cover-view class="trackerImage" bindtap="trackerSetting">

<cover-image class="lazy" data-src="{{imageSrc}}"></cover-image>

</cover-view>

<!--cover-view class="trackerQuick" bindtap="trackerQuickPlay">

<cover-image style="line-height:1;" src="{{imageSpeedAdd}}"></cover-image>

</cover-view>

<cover-view class="trackerSlow" bindtap="trackerSlowPlay">

<cover-image src="{{imageSpeedSlow}}"></cover-image>

</cover-view-->

<cover-view class="trackerPause" bindtap="trackerPause">

<cover-image src="{{imagePause}}"></cover-image>

</cover-view>

<cover-view class="trackerPlay" bindtap="trackerPlay">

<cover-image src="{{imagePlay}}"></cover-image>

</cover-view>

</map>

trackplay.js文件

const app = getApp();

Page({

/**

* 页面的初始数据

*/

data: {

mapCtx: null,

scale: 14,

imageSrc: '/images/tracker/tracker-search.png',

imageSpeedAdd: '/images/tracker/speed-add.png',

imageSpeedSlow: '/images/tracker/speed-slow.png',

imagePause: '/images/tracker/pause.png',

imagePlay: '/images/tracker/play.png',

mapCenter: {

longitude: 113.324520,

latitude: 23.099994

},

markers: [{ //标记点用于在地图上显示标记的位置

iconPath: "/images/tracker/car.png",

id: 1,

width: 25,

height: 40,

longitude: 113.324520,

latitude: 23.099994,

rotate: 0, //旋转角度 默认0

anchor: {

x: .5,

y: .5

}, //经纬度在标注图标的锚点,默认底边中点 {x: .5, y: 1}

callout: { //标记点上方的气泡窗口

content: '轨迹回放',

color: '#fff',

fontSize: 16,

borderRadius: 3,

borderWidth: 1,

borderColor: '#07c160',

bgColor: '#fff',

padding: 5,

textAlign: 'center',

display: 'BYCLICK'

},

}],

polylineSettings: [{ //路线

points: [{latitude: 22.596206, longitude: 113.87317, gpsBearing: 244},{latitude: 22.596216, longitude: 113.873192, gpsBearing: 244},{latitude: 22.596213, longitude: 113.873177, gpsBearing: 244},{latitude: 22.596212, longitude: 113.873205, gpsBearing: 244},{latitude: 22.596155, longitude: 113.873147, gpsBearing: 244},{latitude: 22.59614, longitude: 113.87315, gpsBearing: 244},{latitude: 22.596122, longitude: 113.873146, gpsBearing: 244},{latitude: 22.596098, longitude: 113.873101, gpsBearing: 244},{latitude: 22.596123, longitude: 113.873095, gpsBearing: 244},{latitude: 22.59613, longitude: 113.873047, gpsBearing: 244},{latitude: 22.596154, longitude: 113.873006, gpsBearing: 244},{latitude: 22.596142, longitude: 113.873006, gpsBearing: 244},{latitude: 22.596131, longitude: 113.873009, gpsBearing: 244},{latitude: 22.596117, longitude: 113.873011, gpsBearing: 244},{latitude: 22.596112, longitude: 113.873014, gpsBearing: 244},{latitude: 22.596114, longitude: 113.873021, gpsBearing: 244},{latitude: 22.596122, longitude: 113.873029, gpsBearing: 244},{latitude: 22.596131, longitude: 113.873039, gpsBearing: 244},{latitude: 22.596127, longitude: 113.873046, gpsBearing: 244},{latitude: 22.596116, longitude: 113.873053, gpsBearing: 244},{latitude: 22.596097, longitude: 113.873055, gpsBearing: 244},{latitude: 22.596084, longitude: 113.87306, gpsBearing: 244},{latitude: 22.596074, longitude: 113.873069, gpsBearing: 244},{latitude: 22.596062, longitude: 113.873076, gpsBearing: 244},{latitude: 22.596046, longitude: 113.873075, gpsBearing: 244},{latitude: 22.596028, longitude: 113.873072, gpsBearing: 244},{latitude: 22.595997, longitude: 113.873047, gpsBearing: 244},{latitude: 22.595982, longitude: 113.873054, gpsBearing: 244},{latitude: 22.595967, longitude: 113.873067, gpsBearing: 244},{latitude: 22.595971, longitude: 113.873058, gpsBearing: 244},{latitude: 22.595975, longitude: 113.873046, gpsBearing: 244},{latitude: 22.595984, longitude: 113.873035, gpsBearing: 244},{latitude: 22.595992, longitude: 113.87303, gpsBearing: 244},{latitude: 22.59602, longitude: 113.87305, gpsBearing: 244},{latitude: 22.596017, longitude: 113.873057, gpsBearing: 244},{latitude: 22.596017, longitude: 113.873056, gpsBearing: 244},{latitude: 22.596011, longitude: 113.87305, gpsBearing: 244},{latitude: 22.596008, longitude: 113.873049, gpsBearing: 244},{latitude: 22.596006, longitude: 113.87305, gpsBearing: 244},{latitude: 22.596004, longitude: 113.873053, gpsBearing: 244},{latitude: 22.596004, longitude: 113.873054, gpsBearing: 244},{latitude: 22.595989, longitude: 113.873044, gpsBearing: 244},{latitude: 22.595996, longitude: 113.873051, gpsBearing: 244},{latitude: 22.596023, longitude: 113.873084, gpsBearing: 244},{latitude: 22.596033, longitude: 113.873076, gpsBearing: 244},{latitude: 22.59604, longitude: 113.873076, gpsBearing: 244},{latitude: 22.596041, longitude: 113.873077, gpsBearing: 244},{latitude: 22.596035, longitude: 113.87308, gpsBearing: 244},{latitude: 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113.873199, gpsBearing: 244},{latitude: 22.59605, longitude: 113.873199, gpsBearing: 244},{latitude: 22.596054, longitude: 113.873201, gpsBearing: 244},{latitude: 22.596061, longitude: 113.873211, gpsBearing: 244},{latitude: 22.596063, longitude: 113.873215, gpsBearing: 244},{latitude: 22.596064, longitude: 113.87322, gpsBearing: 244},{latitude: 22.59607, longitude: 113.873222, gpsBearing: 244},{latitude: 22.596067, longitude: 113.873219, gpsBearing: 244},{latitude: 22.596063, longitude: 113.873215, gpsBearing: 244},{latitude: 22.59606, longitude: 113.873219, gpsBearing: 244},{latitude: 22.596061, longitude: 113.873213, gpsBearing: 244},{latitude: 22.595382, longitude: 113.873102, gpsBearing: 0},{latitude: 22.595395, longitude: 113.873132, gpsBearing: 0},{latitude: 22.595371, longitude: 113.873124, gpsBearing: 0},{latitude: 22.595353, longitude: 113.873115, gpsBearing: 0},{latitude: 22.595278, longitude: 113.873133, gpsBearing: 0},{latitude: 22.595199, longitude: 113.873142, gpsBearing: 0},{latitude: 22.594997, longitude: 113.87324, gpsBearing: 91},{latitude: 22.595042, longitude: 113.873372, gpsBearing: 157},{latitude: 22.595165, longitude: 113.873482, gpsBearing: 14},{latitude: 22.595167, longitude: 113.873615, gpsBearing: 264},{latitude: 22.595127, longitude: 113.873673, gpsBearing: 229},{latitude: 22.595109, longitude: 113.873692, gpsBearing: 229},{latitude: 22.595107, longitude: 113.873709, gpsBearing: 229},{latitude: 22.595105, longitude: 113.873715, gpsBearing: 229},{latitude: 22.595092, longitude: 113.873767, gpsBearing: 229},{latitude: 22.595017, longitude: 113.873925, gpsBearing: 113},{latitude: 22.594878, longitude: 113.873748, gpsBearing: 242},{latitude: 22.594688, longitude: 113.873477, gpsBearing: 223},{latitude: 22.594547, longitude: 113.873267, gpsBearing: 243},{latitude: 22.594415, longitude: 113.873053, gpsBearing: 228},{latitude: 22.594323, longitude: 113.872878, gpsBearing: 239},{latitude: 22.594276, longitude: 113.872889, gpsBearing: 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22.671422, longitude: 113.830844, gpsBearing: 11},{latitude: 22.6714, longitude: 113.830852, gpsBearing: 11},{latitude: 22.671388, longitude: 113.830872, gpsBearing: 11},{latitude: 22.671458, longitude: 113.830874, gpsBearing: 11},{latitude: 22.671463, longitude: 113.830894, gpsBearing: 11},{latitude: 22.671475, longitude: 113.830892, gpsBearing: 11},{latitude: 22.671493, longitude: 113.830812, gpsBearing: 11},{latitude: 22.67146, longitude: 113.830784, gpsBearing: 11},{latitude: 22.671443, longitude: 113.830807, gpsBearing: 11},{latitude: 22.671389, longitude: 113.830789, gpsBearing: 11},{latitude: 22.671289, longitude: 113.830735, gpsBearing: 11},{latitude: 22.671227, longitude: 113.830663, gpsBearing: 11},{latitude: 22.671224, longitude: 113.830673, gpsBearing: 11},{latitude: 22.671251, longitude: 113.830766, gpsBearing: 11},{latitude: 22.671234, longitude: 113.830775, gpsBearing: 11},{latitude: 22.67121, longitude: 113.830679, gpsBearing: 11},{latitude: 22.67117, longitude: 113.83051, gpsBearing: 11},{latitude: 22.671142, longitude: 113.830573, gpsBearing: 11},{latitude: 22.670879, longitude: 113.830429, gpsBearing: 348},{latitude: 22.670907, longitude: 113.830445, gpsBearing: 260},{latitude: 22.670978, longitude: 113.830479, gpsBearing: 224},{latitude: 22.671004, longitude: 113.830568, gpsBearing: 224},{latitude: 22.670994, longitude: 113.830727, gpsBearing: 153},{latitude: 22.670997, longitude: 113.830757, gpsBearing: 161},{latitude: 22.671047, longitude: 113.830795, gpsBearing: 166},{latitude: 22.671073, longitude: 113.830817, gpsBearing: 169},{latitude: 22.671085, longitude: 113.830824, gpsBearing: 169},{latitude: 22.671058, longitude: 113.830814, gpsBearing: 169},{latitude: 22.671086, longitude: 113.830899, gpsBearing: 169},{latitude: 22.671089, longitude: 113.830965, gpsBearing: 169},{latitude: 22.671117, longitude: 113.830947, gpsBearing: 169},{latitude: 22.671631, longitude: 113.831154, gpsBearing: 158},{latitude: 22.6716, longitude: 113.831148, gpsBearing: 145},{latitude: 22.67152, longitude: 113.831287, gpsBearing: 145},{latitude: 22.671486, longitude: 113.831509, gpsBearing: 77},{latitude: 22.67135, longitude: 113.831558, gpsBearing: 96},{latitude: 22.671349, longitude: 113.831529, gpsBearing: 102},{latitude: 22.671346, longitude: 113.831489, gpsBearing: 95},{latitude: 22.671388, longitude: 113.831372, gpsBearing: 95},{latitude: 22.671386, longitude: 113.831333, gpsBearing: 95},{latitude: 22.671407, longitude: 113.831286, gpsBearing: 95},{latitude: 22.671292, longitude: 113.831228, gpsBearing: 95},{latitude: 22.671025, longitude: 113.831196, gpsBearing: 149},{latitude: 22.671026, longitude: 113.831183, gpsBearing: 180},{latitude: 22.671076, longitude: 113.83113, gpsBearing: 180},{latitude: 22.671119, longitude: 113.831024, gpsBearing: 180},{latitude: 22.67117, longitude: 113.830974, gpsBearing: 180},{latitude: 22.67112, longitude: 113.830935, gpsBearing: 180},{latitude: 22.671233, longitude: 113.830912, gpsBearing: 180},{latitude: 22.671269, longitude: 113.830879, gpsBearing: 180},{latitude: 22.671215, longitude: 113.830906, gpsBearing: 180},{latitude: 22.6712, longitude: 113.830907, gpsBearing: 180},{latitude: 22.671278, longitude: 113.830979, gpsBearing: 180},{latitude: 22.671498, longitude: 113.831101, gpsBearing: 180},{latitude: 22.671705, longitude: 113.831304, gpsBearing: 43},{latitude: 22.671713, longitude: 113.831276, gpsBearing: 297},{latitude: 22.67165, longitude: 113.831221, gpsBearing: 298},{latitude: 22.671617, longitude: 113.83117, gpsBearing: 312},{latitude: 22.671463, longitude: 113.831156, gpsBearing: 326},{latitude: 22.671413, longitude: 113.831106, gpsBearing: 339},{latitude: 22.671225, longitude: 113.831049, gpsBearing: 353},{latitude: 22.670929, longitude: 113.830936, gpsBearing: 99},{latitude: 22.670841, longitude: 113.83088, gpsBearing: 225},{latitude: 22.671066, longitude: 113.830904, gpsBearing: 231},{latitude: 22.671164, longitude: 113.830972, gpsBearing: 20},{latitude: 22.671189, longitude: 113.83107, gpsBearing: 22},{latitude: 22.671145, longitude: 113.831111, gpsBearing: 29},{latitude: 22.671133, longitude: 113.830951, gpsBearing: 34},{latitude: 22.671185, longitude: 113.830818, gpsBearing: 29},{latitude: 22.671209, longitude: 113.830802, gpsBearing: 348},{latitude: 22.671145, longitude: 113.830834, gpsBearing: 348},{latitude: 22.67109, longitude: 113.830825, gpsBearing: 348},{latitude: 22.671034, longitude: 113.830765, gpsBearing: 348},{latitude: 22.671065, longitude: 113.830838, gpsBearing: 348},{latitude: 22.671175, longitude: 113.830935, gpsBearing: 348},{latitude: 22.671178, longitude: 113.830935, gpsBearing: 348},{latitude: 22.671248, longitude: 113.830893, gpsBearing: 348},{latitude: 22.671134, longitude: 113.83089, gpsBearing: 348},{latitude: 22.671147, longitude: 113.830964, gpsBearing: 348},{latitude: 22.671283, longitude: 113.831064, gpsBearing: 348},{latitude: 22.671341, longitude: 113.831058, gpsBearing: 348}],

color: "#7b7af8",

width: 5,

//borderWidth: 2,

borderColor: '#7b7af8',

level: 'abovebuildings', //压盖关系

arrowLine: true //带箭头的线

}],

polygons: [],

mapSettings: { //统一设置地图配置

skew: 0, //倾斜角度

rotate: 0, //旋转角度

showScale: false, //显示比例尺,工具暂不支持

subKey: '', //个性化地图使用的key

layerStyle: 1, //个性化地图配置的 style

enableZoom: true, //缩放

enableScroll: true, //拖动

enableRotate: false, //旋转

showCompass: false, //指南针

enable3D: false, //展示3D楼块(工具暂不支持)

enableOverlooking: false, //俯视

enableSatellite: false, //卫星图

enableTraffic: false, //实时路况

},

playIndex: 0,

showMessage: "",

step: 1,

duration: 100,

maxDuration: 2000,

minDuration: 500,

isPause: false

},

trackPlay: function () { //轨迹接口

const that = this;

const points = this.data.polylineSettings[0].points;

that.setData({

'markers[0].latitude': points[0].latitude,

'markers[0].longitude': points[0].longitude,

mapCenter: points[0],

}, function () {

that.mapCtx.translateMarker({

markerId: 1,

autoRotate: true,

moveWithRotate: true,

duration: 1000,

destination: points[0]

})

that.beginTrack() //轨迹回放

})

},

beginTrack: function () { //轨迹回放

const that = this;

let index = that.data.playIndex === 0 ? 0 : that.data.playIndex;

let points = this.data.polylineSettings[0].points;

let duration = that.data.duration;

//this.play();

that.data.trackTimer = setInterval(function () {

const point = points[index];

that.data.lastPoint = point;

//console.log("最后点:",that.data.lastPoint);

// console.log(point,that.getCurrentTime());

that.mapCtx.translateMarker({

markerId: 1,

autoRotate: false,

moveWithRotate: true,

duration: duration,

destination: point,

rotate: point.gpsBearing,

fail: function (res) {

console.log(res);

},

success: function () {

that.setData({

playIndex: index,

showMessage: point.latitude + "," + point.longitude + "," + point.gpsBearing + "," + points.length + "," + index

})

that.mapCtx.getRegion({

success: function (e) {

if (that.checkOutRegion(point, e.southwest, e.northeast)) {

that.setData({

mapCenter: point,

})

}

}

});

if (index + 1 >= points.length) {

that.stopTrack()

}

index++;

}

})

}, duration);

},

stopTrack: function () { //结束回放

const that = this;

let points = this.data.polylineSettings[0].points;

that.setData({

playIndex: 0,

'markers[0].latitude': points[0].latitude,

'markers[0].longitude': points[0].longitude,

});

clearInterval(that.data.trackTimer);

},

checkOutRegion: function (point, southwest, northeast) {

// console.log(point,southwest,northeast);

if (point.longitude < southwest.longitude || point.latitude < southwest.latitude) {

return true;

}

if (point.longitude > northeast.longitude || point.latitude > northeast.latitude) {

return true;

}

return false;

},

trackerPause: function () {

if (!this.data.isPause) {

clearInterval(this.data.trackTimer);

this.setData({

isPause: true

});

}

},

trackerPlay: function () {

if (this.data.isPause) {

this.beginTrack();

this.setData({

isPause: false

});

}

},

/**

* 生命周期函数--监听页面加载

*/

onLoad: function (options) {

this.mapCtx = wx.createMapContext('mymap');

this.trackPlay();

},

})

这里如果每次移动一个点,就切换一下地图中心点,去跟随车辆位置的话,地图会有抖动的感觉。所以我们做了一个可视化区域的判断,当车出了可视化区域的时候再进行地图中心点的切换。

这里还使用了translateMarker的函数来进行小车偏向角的切换,让小车可以平滑切换。要注意小车图片默认的朝上是向上,相当于正北方向。

目前是实现了轨迹回放功能的,后续我们将继续添加快进和快退的功能。

实现过程中遇到几个小程序bug,暂时无法解决,先记录下来,等微信更新:

1.画轨迹线中borderWidth设置,导致轨迹真机无法显示。

2.地图层级切换导致的轨迹不可见。具体可以参照:https://developers.weixin.qq.com/community/develop/doc/000e8eed2fc20884237a791105b800

以上两个问题都没找到解决办法,有解决办法的可以给我发消息告诉我

到此这篇关于详解微信小程序轨迹回放实现及遇到的坑的文章就介绍到这了,更多相关小程序轨迹回放内容请搜索以前的文章或继续浏览下面的相关文章希望大家以后多多支持!

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