BMapGL画图工具的引入.jpg
写在前面
前面有篇文章【vue引入百度地图BMapGL，或者其他个性化地图】写了一个关于vue百度地图BMapGL的引入，有人问怎么引入BMapGLLib ，因为我在项目只用了其中的一点点简单的，所以关于绘制的是自己撸的没有引入BMapGLLib 。既然有人问，那么就弄了一下。
文件结构
BMapGLLib.vue是文件，bmpgl_lib.js是调用方法
文件结构.jpg
在src里面创建一个bmpgl_lib.js
其实建立在哪看你自己的意愿啦。（小声逼逼）
如果只用BMapGL那么只用loadBaiDuMap() 这个方法就好了。（再次小声逼逼）
const ak = 'XXXXXX' // 百度的地图密钥
/**
* 异步加载百度地图
* @returns {Promise}
* @constructor
*/
function loadBaiDuMap() {
return new Promise(function (resolve, reject) {
try {
console.log('BMap is defined:', BMapGL === undefined || BMapGL)
resolve(BMapGL)
} catch (err) {
window.init = function () {
resolve(BMapGL)
}
let script = document.createElement('script')
script.type = 'text/javascript'
script.src = `http://api.map.baidu.com/api?v=1.0&type=webgl&ak=${ak}&callback=init`
script.onerror = reject
document.body.appendChild(script)
}
})
}
export { loadBaiDuMap }
/**
* 异步加载百度地图,以及绘制工具
* @returns {Promise}
* @constructor
*/
function loadBaiDuDrawMap() {
return loadBaiDuMap().then(BMapGL => {
let loaded = false
try {
loaded = (BMapGLLib && BMapGLLib.DrawingManager)
} catch (err) {
loaded = false
}
if (!loaded) {
console.log('BMapLib.DrawingManager loading!')
let script = document.createElement('script')
script.type = 'text/javascript'
script.src = 'http://mapopen.cdn.bcebos.com/github/BMapGLLib/DrawingManager/src/DrawingManager.min.js'
document.body.appendChild(script)
let link = document.createElement('link')
link.rel = 'stylesheet'
link.href = 'http://mapopen.cdn.bcebos.com/github/BMapGLLib/DrawingManager/src/DrawingManager.min.css'
document.body.appendChild(link)
} else {
console.log('BMapLib.DrawingManager is loaded!')
}
return BMapGL
})
}
export { loadBaiDuDrawMap }
vue页面里面引入
<template>
<div class="home">
<!-- BMapGLLib 控件，这里自己去优化一下吧，写成循环吧 ，，懒得写了 -->
<ul class="drawing-panel">
<li class="bmap-btn bmap-marker" @click="draw('marker')" :style="{ 'background-position-y': actNav === 'marker' ? '-52px' : '0px'}"></li>
<li class="bmap-btn bmap-polyline" @click="draw('polyline')" :style="{ 'background-position-y': actNav === 'polyline' ? '-52px' : '0px' }"></li>
<li class="bmap-btn bmap-rectangle" @click="draw('rectangle')" :style="{ 'background-position-y': actNav === 'rectangle' ? '-52px' : '0px' }"></li>
<li class="bmap-btn bmap-polygon" @click="draw('polygon')" :style="{'background-position-y': actNav === 'polygon' ? '-52px' : '0px'}"></li>
<li class="bmap-btn bmap-circle" @click="draw('circle')" :style="{'background-position-y': actNav === 'circle' ? '-52px' : '0px'}"></li>
</ul>
<!-- 地图容器 -->
<div id="container" class="allmap"></div>
</div>
</template>
<script>
// 引入异步引入地图的方法
import { loadBaiDuDrawMap } from "@/bmpgl_lib.js";
export default {
name: "home",
data() {
return {
map: null,
actNav: "",
};
},
mounted() {
this.initMap();
},
methods: {
initMap() {
// 初始化地图
loadBaiDuDrawMap().then((BMapGL) => {
// 创建地图实例
let map = new BMapGL.Map("container");
// 添加比例尺控件
map.addControl(
new BMapGL.ScaleControl({
anchor: BMAP_ANCHOR_BOTTOM_LEFT,
offset: new BMapGL.Size(10, 10),
})
);
// 添加缩放控件
map.addControl(
new BMapGL.ZoomControl({
anchor: BMAP_ANCHOR_BOTTOM_RIGHT,
offset: new BMapGL.Size(10, 10),
})
);
// 保存地图
this.map = map
// 创建点坐标 axios => res 获取的初始化定位坐标
const point = new BMapGL.Point(114.031761, 22.542826);
// 初始化地图，设置中心点坐标和地图级别
map.centerAndZoom(point, 19);
//开启鼠标滚轮缩放
map.enableScrollWheelZoom(true);
map.setHeading(64.5);
map.setTilt(73);
});
},
draw(type) {
this.actNav = type
const styleOptions = {
strokeColor: "#5E87DB", // 边线颜色
fillColor: "#5E87DB", // 填充颜色。当参数为空时，圆形没有填充颜色
strokeWeight: 2, // 边线宽度，以像素为单位
strokeOpacity: 1, // 边线透明度，取值范围0-1
fillOpacity: 0.2, // 填充透明度，取值范围0-1
};
const labelOptions = {
borderRadius: "2px",
background: "#FFFBCC",
border: "1px solid #E1E1E1",
color: "#703A04",
fontSize: "12px",
letterSpacing: "0",
padding: "5px",
};
// 实例化鼠标绘制工具
const drawingManager = new BMapGLLib.DrawingManager(this.map, {
// isOpen: true, // 是否开启绘制模式
enableCalculate: false, // 绘制是否进行测距测面
enableSorption: true, // 是否开启边界吸附功能
sorptiondistance: 20, // 边界吸附距离
rectangleOptions: styleOptions, // 矩形的样式
});
if (drawingManager.isOpen_ && drawingManager.getDrawingMode() === type) {
drawingManager.close();
} else {
drawingManager.setDrawingMode(type);
drawingManager.open();
}
},
},
};
</script>
<style lang="scss">
// 隐藏版权信息
.BMap_cpyCtrl {
display: none;
}
// 隐藏版权图标
.anchorBL img {
display: none;
}
</style>
<style lang="scss" scoped>
.allmap {
width: 100%;
height: 100vh;
position: relative;
z-index: 1;
}
.change-map-type {
position: absolute;
right: 50px;
bottom: 10px;
z-index: 2;
}
ul li {
list-style: none;
}
.info {
z-index: 999;
width: auto;
min-width: 22rem;
padding: 0.75rem 1.25rem;
margin-left: 1.25rem;
position: fixed;
top: 1rem;
background-color: #fff;
border-radius: 0.25rem;
font-size: 14px;
color: #666;
box-shadow: 0 2px 6px 0 rgba(27, 142, 236, 0.5);
}
.drawing-panel {
z-index: 999;
position: fixed;
top: 20px;
right: 20px;
border-radius: 0.25rem;
height: 47px;
box-shadow: 0 2px 6px 0 rgba(27, 142, 236, 0.5);
}
.bmap-btn {
border-right: 1px solid #d2d2d2;
float: left;
width: 64px;
height: 100%;
background-image: url(http://api.map.baidu.com/library/DrawingManager/1.4/src/bg_drawing_tool.png);
cursor: pointer;
}
.drawing-panel .bmap-marker {
background-position: -65px 0;
}
.drawing-panel .bmap-polyline {
background-position: -195px 0;
}
.drawing-panel .bmap-rectangle {
background-position: -325px 0;
}
.drawing-panel .bmap-polygon {
background-position: -260px 0;
}
.drawing-panel .bmap-circle {
background-position: -130px 0;
}
</style>
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