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详解微信小措施轨迹回放实现及碰着的坑

时间:2021-05-05|栏目:Javascript/Ajax|点击:

微信小措施轨迹回放主要利用到polyline举办划线操纵,以及利用marker去举办小车移动操纵。结果图如下:

详解微信小法子轨迹回放实现及碰到的坑

详细实现代码:

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  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: [{ //标志点用于在舆图上显示标志的位置
   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: { //标志点上方的气泡窗口
    content: '轨迹回放',
    color: '#fff',
    fontSize: 16,
    borderRadius: 3,
    borderWidth: 1,
    borderColor: '#07c160',
    bgColor: '#fff',
    padding: 5,
    textAlign: 'center',
    display: 'BYCLICK'
   },
  }],
  polylineSettings: [{ //蹊径
   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: 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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, 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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',   //压盖干系
   arrowLine: true        //带箭头的线
  }],
  polygons: [],
  mapSettings: {        //统一配置舆图设置
   skew: 0,         //倾斜角度
   rotate: 0,        //旋转角度
   showScale: false,     //显示比例尺,东西暂不支持
   subKey: '',        //本性化舆图利用的key
   layerStyle: 1,      //本性化舆图设置的 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(东西暂不支持)
   enableOverlooking: false,  //俯视
   enableSatellite: false,   //卫星图
   enableTraffic: false,    //及时路况
  },
  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 () { //竣事回放
  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();
 },
})

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