<template>
	<view>
		<map
			v-if="polyline[0].points.length > 0"
			id="myMap"
			:markers="markers"
			:polyline="polyline"
			:include-points="polyline[0].points"
			:latitude="polyline[0].points[0].latitude"
			:longitude="polyline[0].points[0].longitude"
			style="width: 100%; height: calc(100vh - 90px)"
		/>
		<view class="hcp-bottom">
			<button v-if="startMove" @click="handleStopMove()">暂停移动</button>
			<button v-else @click="handleStartMove()">开始移动</button>
		</view>
	</view>
</template>

<script>
export default {
	data() {
		return {
			mapContext: null,			//地图对象
			startMove: false,			//是否开始回放
			nextPointIndex: 1,		//下一个坐标点的索引
			durationTime: 1000,		//相邻两点动画持续时长默认1秒
			//路线信息
			polyline: [
				{
					width: 8,
					points: [],
					arrowLine: true,
					color: '#3591FC',
				}
			],
			//标记点(即移动标记物)
			markers: [
				{
					id: 1,
					width: 40,
					height: 40,
					latitude: 0,
					longitude: 0,
					iconPath: '../../../static/image/point.png',
					anchor: {
						x: 0.5,
						y: 1
					}
				}
			]
		}
	},
	onLoad(option) {
		this.getTrack()		//获取轨迹信息(只做演示，未进行远程请求)
	},
	methods: {
		//模拟获取远程数据
		getTrack() {
			this.polyline[0].points = [
				{latitude: 39.997761, longitude: 116.478935},
				{latitude: 39.997825, longitude: 116.478939},
				{latitude: 39.998549, longitude: 116.478912},
				{latitude: 39.998555, longitude: 116.478998},
				{latitude: 39.998566, longitude: 116.479282},
				{latitude: 39.998528, longitude: 116.479658},
				{latitude: 39.998453, longitude: 116.480151},
				{latitude: 39.998302, longitude: 116.480784},
				{latitude: 39.998184, longitude: 116.481149},
				{latitude: 39.997997, longitude: 116.481573},
				{latitude: 39.997846, longitude: 116.481863},
				{latitude: 39.997718, longitude: 116.482072},
				{latitude: 39.997718, longitude: 116.482362},
				{latitude: 39.998935, longitude: 116.483633},
				{latitude: 39.998968, longitude: 116.48367},
				{latitude: 39.999861, longitude: 116.484648}
			]
			this.durationTime = Math.ceil(30000 / this.polyline[0].points.length)	//默认播放全程使用30秒，计算相连两点动画时长
			this.initMapData()
		},
		//设置地图
		initMapData() {
			this.initMarkers()
			this.mapContext = uni.createMapContext('myMap', this)
		},
		//设置位置（从起点开始）
		initMarkers() {
			this.markers[0].latitude = this.polyline[0].points[0].latitude
			this.markers[0].longitude = this.polyline[0].points[0].longitude
		},
		//开始移动
		handleStartMove() {
			this.startMove = true
			this.movePoint()
		},
		//停止移动
		handleStopMove() {
			this.startMove = false
		},
		//移动坐标
		movePoint() {
			/*
			//也可以用这个方法
			this.mapContext.moveAlong({
				duration: 30000,
				markerId: this.markers[0].id,
				path: this.polyline[0].points
			})
			return
			*/
			this.mapContext.translateMarker({
				duration: this.durationTime,
				markerId: this.markers[0].id,
				destination: {
					latitude: this.polyline[0].points[this.nextPointIndex].latitude,
					longitude: this.polyline[0].points[this.nextPointIndex].longitude
				},
				animationEnd: res => {
					//播放结束，继续移动到下一个点，最后一个点时结束移动
					if (this.nextPointIndex < this.polyline[0].points.length - 1) {
						this.nextPointIndex++
						if (this.startMove) {
							this.movePoint()
						}
					} else {
						this.nextPointIndex = 1
						this.startMove = false
					}
				}
			})
		}
	}
};
</script>

<style lang="scss" scoped>
.hcp-bottom {
	left: 0;
	bottom: 0;
	width: 750rpx;
	position: fixed;
}
</style>

截图为H5运行效果，打包APP运行为高德地图