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
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<!--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
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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: 22.596023, longitude: 113.873069, gpsBearing: 244},{latitude: 22.59602, longitude: 113.873076, gpsBearing: 244},{latitude: 22.596019, longitude: 113.873085, gpsBearing: 244},{latitude: 22.596027, longitude: 113.873101, gpsBearing: 244},{latitude: 22.596018, longitude: 113.873105, gpsBearing: 244},{latitude: 22.596012, longitude: 113.873108, gpsBearing: 244},{latitude: 22.596008, longitude: 113.873111, gpsBearing: 244},{latitude: 22.596009, longitude: 113.873119, gpsBearing: 244},{latitude: 22.59601, longitude: 113.873126, gpsBearing: 244},{latitude: 22.596015, longitude: 113.873135, gpsBearing: 244},{latitude: 22.596017, longitude: 113.873143, gpsBearing: 244},{latitude: 22.596017, longitude: 113.873152, gpsBearing: 244},{latitude: 22.595972, longitude: 113.873132, gpsBearing: 244},{latitude: 22.595979, longitude: 113.873145, gpsBearing: 244},{latitude: 22.595982, longitude: 113.873143, gpsBearing: 244},{latitude: 22.595988, longitude: 113.873132, gpsBearing: 244},{latitude: 22.595988, longitude: 113.873128, gpsBearing: 244},{latitude: 22.59599, longitude: 113.873135, gpsBearing: 244},{latitude: 22.595992, longitude: 113.87314, gpsBearing: 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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: 242},{latitude: 22.594277, longitude: 113.872878, gpsBearing: 242},{latitude: 22.594272, longitude: 113.872867, gpsBearing: 242},{latitude: 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328},{latitude: 22.627567, longitude: 113.848077, gpsBearing: 324},{latitude: 22.628267, longitude: 113.847538, gpsBearing: 325},{latitude: 22.62907, longitude: 113.846803, gpsBearing: 320},{latitude: 22.629844, longitude: 113.846088, gpsBearing: 319},{latitude: 22.630508, longitude: 113.845474, gpsBearing: 320},{latitude: 22.631219, longitude: 113.844839, gpsBearing: 320},{latitude: 22.631904, longitude: 113.844202, gpsBearing: 317},{latitude: 22.6326, longitude: 113.843615, gpsBearing: 323},{latitude: 22.63327, longitude: 113.84305, gpsBearing: 319},{latitude: 22.63395, longitude: 113.84246, gpsBearing: 321},{latitude: 22.634749, longitude: 113.841687, gpsBearing: 314},{latitude: 22.635693, longitude: 113.840785, gpsBearing: 318},{latitude: 22.636531, longitude: 113.839701, gpsBearing: 302},{latitude: 22.637421, longitude: 113.838755, gpsBearing: 320},{latitude: 22.638429, longitude: 113.837917, gpsBearing: 318},{latitude: 22.639228, longitude: 113.837153, gpsBearing: 318},{latitude: 22.639727, longitude: 113.836756, gpsBearing: 325},{latitude: 22.640429, longitude: 113.836294, gpsBearing: 330},{latitude: 22.640876, longitude: 113.836018, gpsBearing: 332},{latitude: 22.641161, longitude: 113.835815, gpsBearing: 324},{latitude: 22.641617, longitude: 113.835526, gpsBearing: 334},{latitude: 22.642177, longitude: 113.835227, gpsBearing: 331},{latitude: 22.642515, longitude: 113.834992, gpsBearing: 320},{latitude: 22.643021, longitude: 113.834658, gpsBearing: 329},{latitude: 22.643557, longitude: 113.834292, gpsBearing: 328},{latitude: 22.644073, longitude: 113.833943, gpsBearing: 327},{latitude: 22.644542, longitude: 113.833564, gpsBearing: 319},{latitude: 22.645273, longitude: 113.832871, gpsBearing: 319},{latitude: 22.64629, longitude: 113.832075, gpsBearing: 321},{latitude: 22.647176, longitude: 113.831203, gpsBearing: 315},{latitude: 22.648153, longitude: 113.830214, gpsBearing: 316},{latitude: 22.64912, longitude: 113.829231, gpsBearing: 316},{latitude: 22.649892, 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gpsBearing: 357},{latitude: 22.670029, longitude: 113.82891, gpsBearing: 1},{latitude: 22.670366, longitude: 113.829053, gpsBearing: 74},{latitude: 22.670421, longitude: 113.829364, gpsBearing: 90},{latitude: 22.670444, longitude: 113.829855, gpsBearing: 93},{latitude: 22.670461, longitude: 113.830243, gpsBearing: 77},{latitude: 22.670541, longitude: 113.830399, gpsBearing: 21},{latitude: 22.670909, longitude: 113.83034, gpsBearing: 349},{latitude: 22.671146, longitude: 113.830415, gpsBearing: 38},{latitude: 22.671149, longitude: 113.830554, gpsBearing: 143},{latitude: 22.671147, longitude: 113.830591, gpsBearing: 103},{latitude: 22.671211, longitude: 113.830701, gpsBearing: 59},{latitude: 22.671229, longitude: 113.830758, gpsBearing: 54},{latitude: 22.671152, longitude: 113.830826, gpsBearing: 141},{latitude: 22.671181, longitude: 113.830789, gpsBearing: 148},{latitude: 22.671081, longitude: 113.830807, gpsBearing: 173},{latitude: 22.671056, longitude: 113.830823, gpsBearing: 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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服务器之家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服务器之家！
原文链接：https://segmentfault.com/a/1190000039151117
