BMapGL畫圖工具的引入.jpg
寫在前面
前面有篇文章【vue引入百度地圖BMapGL，或者其他個(gè)性化地圖】寫了一個(gè)關(guān)于vue百度地圖BMapGL的引入意荤，有人問怎么引入BMapGLLib 啊片，因?yàn)槲以陧?xiàng)目只用了其中的一點(diǎn)點(diǎn)簡(jiǎn)單的，所以關(guān)于繪制的是自己擼的沒有引入BMapGLLib 玖像。既然有人問紫谷，那么就弄了一下。
文件結(jié)構(gòu)
BMapGLLib.vue是文件御铃，bmpgl_lib.js是調(diào)用方法
文件結(jié)構(gòu).jpg
在src里面創(chuàng)建一個(gè)bmpgl_lib.js
其實(shí)建立在哪看你自己的意愿啦碴里。（小聲逼逼）
如果只用BMapGL那么只用loadBaiDuMap() 這個(gè)方法就好了。（再次小聲逼逼）
const ak = 'XXXXXX' // 百度的地圖密鑰
/**
* 異步加載百度地圖
* @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 }
/**
* 異步加載百度地圖,以及繪制工具
* @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.
document.body.appendChild(link)
} else {
console.log('BMapLib.DrawingManager is loaded!')
}
return BMapGL
})
}
export { loadBaiDuDrawMap }
vue頁面里面引入
<template>
<div class="home">
<!-- BMapGLLib 控件上真，這里自己去優(yōu)化一下吧咬腋，寫成循環(huán)吧 ，睡互，懶得寫了 -->
<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>
<!-- 地圖容器 -->
<div id="container" class="allmap"></div>
</div>
</template>
<script>
// 引入異步引入地圖的方法
import { loadBaiDuDrawMap } from "@/bmpgl_lib.js";
export default {
name: "home",
data() {
return {
map: null,
actNav: "",
};
},
mounted() {
this.initMap();
},
methods: {
initMap() {
// 初始化地圖
loadBaiDuDrawMap().then((BMapGL) => {
// 創(chuàng)建地圖實(shí)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),
})
);
// 添加縮放控件
map.addControl(
new BMapGL.ZoomControl({
anchor: BMAP_ANCHOR_BOTTOM_RIGHT,
offset: new BMapGL.Size(10, 10),
})
);
// 保存地圖
this.map = map
// 創(chuàng)建點(diǎn)坐標(biāo) axios => res 獲取的初始化定位坐標(biāo)
const point = new BMapGL.Point(114.031761, 22.542826);
// 初始化地圖根竿，設(shè)置中心點(diǎn)坐標(biāo)和地圖級(jí)別
map.centerAndZoom(point, 19);
//開啟鼠標(biāo)滾輪縮放
map.enableScrollWheelZoom(true);
map.setHeading(64.5);
map.setTilt(73);
});
},
draw(type) {
this.actNav = type
const styleOptions = {
strokeColor: "#5E87DB", // 邊線顏色
fillColor: "#5E87DB", // 填充顏色。當(dāng)參數(shù)為空時(shí)就珠，圓形沒有填充顏色
strokeWeight: 2, // 邊線寬度寇壳，以像素為單位
strokeOpacity: 1, // 邊線透明度，取值范圍0-1
fillOpacity: 0.2, // 填充透明度妻怎，取值范圍0-1
};
const labelOptions = {
borderRadius: "2px",
background: "#FFFBCC",
border: "1px solid #E1E1E1",
color: "#703A04",
fontSize: "12px",
letterSpacing: "0",
padding: "5px",
};
// 實(shí)例化鼠標(biāo)繪制工具
const drawingManager = new BMapGLLib.DrawingManager(this.map, {
// isOpen: true, // 是否開啟繪制模式
enableCalculate: false, // 繪制是否進(jìn)行測(cè)距測(cè)面
enableSorption: true, // 是否開啟邊界吸附功能
sorptiondistance: 20, // 邊界吸附距離
rectangleOptions: styleOptions, // 矩形的樣式
});
if (drawingManager.isOpen_ && drawingManager.getDrawingMode() === type) {
drawingManager.close();
} else {
drawingManager.setDrawingMode(type);
drawingManager.open();
}
},
},
};
</script>
<style lang="scss">
// 隱藏版權(quán)信息
.BMap_cpyCtrl {
display: none;
}
// 隱藏版權(quán)圖標(biāo)
.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>
