vue2 结合iview和百度地图API实现电子围栏-编程知识

vue2 结合iview和百度地图API实现电子围栏

实现在地图上绘制电子围栏并自定义电子围栏样式，还可以标记中心点

1.百度地图API相关JS引用

 <script src="//api.map.baidu.com/api?type=webgl&v=1.0&ak=百度地图官网申请的ak"></script>//电子围栏相关的api<link href="//mapopen.cdn.bcebos.com/github/BMapGLLib/DrawingManager/src/DrawingManager.min.css" rel="stylesheet">
<script type="text/javascript"src="//mapopen.cdn.bcebos.com/github/BMapGLLib/DrawingManager/src/DrawingManager.min.js"></script>

2.页面代码

<template><div style="position: relative;height:100%"><!--地图--><div id="map" class="map" style="height:100%" /><div class="draw-btn" @click="drawMap()">开始绘制</div><!--工具栏--><div class="color-list" v-if="showDraw"><Button :type="isCenter?'info':'primary'"size="small"style="margin-right: 10px;"@click="setCenter"> 中心点</Button><input type="color"id="strokeColor"v-model="strokeColor"><Select v-model="strokeWeight"style="width:50px;margin:0 5px"><Option v-for="item in 9":value="item":key="item">{{ item }}</Option></Select><input type="color"id="fillColor"v-model="fillColor"><Select v-model="fillOpacity"style="width:60px;margin:0 5px"><Option v-for="item in fillOpacityList":value="item":key="item">{{ item }}</Option></Select></div></div>
</template>
<script>
export default {name: 'map',data() {return {strokeColor: '#DA4863',strokeWeight: 6,fillColor: '#DA4863',fillOpacity: 0.6,fillOpacityList: [0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1],polyLinePoints: [],markerPoints: [],polyLines: null,isCenter: false,showDraw:false}},computed:{changeData() {const { strokeColor, strokeWeight, fillColor, fillOpacity } = thisreturn {strokeColor,strokeWeight,fillColor,fillOpacity}}},watch: {changeData: function (newV) {this.initSetMap()}},methods:{//开始绘制drawMap(){this.showDraw= truethis.isCenter = falsethis.strokeColor = '#DA4863'this.strokeWeight = 6this.fillColor = '#DA4863'this.fillOpacity = 0.6this.initSetMap()},//获取坐标初始化地图init() {let data={blat: 29.516071,blng: 106.525681}this.initMap(data.blng, data.blat)},//清除坐标点clearMarkerOverlay() {const allOverlays = this.map.getOverlays()for (let i = 0; i < allOverlays.length; i++) {if (allOverlays[i].id && allOverlays[i].id === this.selectData.id) {this.map.removeOverlay(allOverlays[i])}}},//修改围栏样式时触发initSetMap() {this.polyLinePoints = []this.markerPoints = []var that = thisconst { strokeColor, strokeWeight, fillColor, fillOpacity } = thisvar overlaycomplete = function (e) {var mlnglat = []var path = e.overlay.getPath() // Array<Point> 返回多边型的点数组for (var i = 0; i < path.length; i++) {mlnglat.push({lng: path[i].lng,lat: path[i].lat})}console.log(mlnglat)}var styleOptions = {strokeColor: this.strokeColor, // 边线颜色。fillColor: this.fillColor, // 填充颜色。当参数为空时，圆形将没有填充效果。strokeWeight: this.strokeWeight, // 边线的宽度，以像素为单位。strokeOpacity: 1, // 边线透明度，取值范围0 - 1。fillOpacity: this.fillOpacity, // 填充的透明度，取值范围0 - 1。strokeStyle: 'solid' // 边线的样式，solid或dashed。}this.drawingManager = new BMapGLLib.DrawingManager(this.map, {isOpen: false, // 是否开启绘制模式enableDrawingTool: true, // 是否显示工具栏drawingToolOptions: {anchor: BMAP_ANCHOR_TOP_RIGHT, // 位置offset: new BMapGL.Size(5, 5) // 偏离值},polygonOptions: styleOptions // 多边形的样式})this.drawingManager.addEventListener('overlaycomplete', overlaycomplete)},//初始化地图initMap(lng, lat) {let that = thisif (this.map) {this.map.clearOverlays()}this.map = new BMapGL.Map('map')var poi = new BMapGL.Point(lng, lat)this.map.centerAndZoom(poi, 18) // 设置中心点坐标和地图级别this.map.enableScrollWheelZoom() // 启用鼠标滚动对地图放大缩小this.map.addControl(new BMapGL.NavigationControl())if (this.polyLinePoints && this.polyLinePoints.length) {this.polyLinePoints.forEach((item) => {if (item.points && item.points.length) {let data = []item.points.forEach((col) => {var po = new BMapGL.Point(col.lng, col.lat)data.push(po)})this.polyLines = new BMapGL.Polygon(data, {strokeColor: item.strokeColor, // 边线颜色。fillColor: item.fillColor, // 填充颜色。当参数为空时，圆形将没有填充效果。strokeWeight: item.strokeWeight, // 边线的宽度，以像素为单位。strokeOpacity: 1, // 边线透明度，取值范围0 - 1。fillOpacity: item.fillOpacity // 填充的透明度，取值范围0 - 1。})this.map.addOverlay(this.polyLines)}})}if (this.markerPoints && this.markerPoints.length) {this.markerPoints.forEach((item) => {if (item.points && item.points.length) {let data = []item.points.forEach((col) => {var marker = new BMapGL.Marker(new BMapGL.Point(col.lng, col.lat))marker.id = item.idthis.map.addOverlay(marker)const label = new BMapGL.Label('', {offset: new BMapGL.Size(0, 0)})label.setStyle({textAlign: 'center',// 设置label的样式color: 'white',fontSize: '14px',border: 'none',color: 'black',fontFamily: '黑体'// opacity: '0.5',})label.setContent(`<div style="background: rgba(255,255,255,1);border-radius: 12px;padding:3px 5px">${item.name}</div>`)marker.setLabel(label)})}})}//地图展示样式this.map.setMapStyleV2({styleJson: [// {//   featureType: 'poilabel',//   elementType: 'all',//   stylers: {//     visibility: 'off'//   }// },// {//   featureType: 'manmade',//   elementType: 'all',//   stylers: {//     visibility: 'off'//   }// },{featureType: 'building',elementType: 'all',stylers: {visibility: 'off'}}]})this.map.addEventListener('click', function (e) {//点击地图设置中心点if (that.isCenter) {that.clearMarkerOverlay()var marker = new BMapGL.Marker(new BMapGL.Point(e.latlng.lng, e.latlng.lat))marker.id = that.selectData.idthat.map.addOverlay(marker)const label = new BMapGL.Label('', {offset: new BMapGL.Size(0, 0)})label.setStyle({textAlign: 'center',// 设置label的样式color: 'white',fontSize: '14px',border: 'none',color: 'black',fontFamily: '黑体'// opacity: '0.5',})label.setContent(`<div style="background: rgba(255,255,255,1);border-radius: 12px;padding:3px 5px">${that.selectData.name}</div>`)marker.setLabel(label)}})},setCenter() {this.isCenter = true},},mounted() {this.init()}}
</script>
<style scoped lang="less">
/deep/.BMapGLLib_Drawing {position: inherit !important;
}
/deep/ .BMapGLLib_Drawing .BMapGLLib_polyline {display: none !important;
}/deep/ .BMapGLLib_Drawing_panel {position: absolute;right: 380px;top: 1%;
}
//隐藏除了多边形之外的按钮
/deep/ .BMapGLLib_Drawing .BMapGLLib_marker {display: none !important;
}
/deep/ .BMapGLLib_Drawing .BMapGLLib_circle {display: none !important;
}
/deep/ .BMapGLLib_Drawing .BMapGLLib_rectangle {display: none !important;
}
/deep/.BMap_stdMpZoom {width: 0 !important;height: 0 !important;
}
.draw-btn{position: absolute;left: 10px;top: 2%;z-index: 999;
}
.color-list {position: absolute;right: 10px;top: 2%;z-index: 999;margin: auto;display: flex;align-items: center;justify-content: center;
}
</style>