高德地图绘制纯文本、绘制maker及给其绑定事件方法、绘制区域方法小结
作者：互联网
我们常需要利用高德地图在地图图层上面绘制文本、maker等内容，有必要小结一下；
情形一：绘制纯文本
封装方法如下：
addText(
textData,
style = {
"font-size": "12px",
color: "#fff",
backgroundColor: "transparent",
border: "none",
}
) {
if (!textData.length) return;
for (const [keys, values] of textData.entries()) {
var text = new AMap.Text({
text: values.name,
style,
position: values.position,
});
text.setMap(this.map);
}
}
使用方法：
this.addText([
{
name: "潇河产业园区",
position: [112.51776, 37.619499],
},
{
name: "阳曲产业园",
position: [112.690353, 38.05569],
}]
);
注意：此封装方法，将经纬度已经默认组装在一个数组里面，这里根据实际情况可以将经纬度自行拆开封装也行；
情形二：绘制maker及绑定事件弹出信息窗口
封装方法如下：
/**
* @description: 绘制maker的方法及添加事件
* @param {*} markerList 坐标的集合[{lang:'',lat:''}]
* @param {*} icon = new AMap.Icon({
size: new AMap.Size(20, 20), // 图标尺寸
image:
"data:"base64格式", // Icon的图像
imageSize: new AMap.Size(20, 20), // 根据所设置的大小拉伸或压缩图片
});
* @param {*} myhtml 弹框infowindow的样式函数
* @return {*}
* @author: George Zhang
*/
addCommonMarkerFun(markerList = [], icon = "", myHtml = "") {
let that = this;
if (!markerList.length) return;
for (const [keys, values] of markerList.entries()) {
let marker = new AMap.Marker({
position: new AMap.LngLat(values.longitude, values.latitude),
offset: new AMap.Pixel(-5, -5),
icon,
label: {
content: values.name || "",
direction: "bottom",
offset: new AMap.Pixel(5, 5),
},
});
marker.on("click", async function(e) {
if (!myHtml) return;
const html = myHtml(values);
that.addInfoWindow(html, [e.lnglat.lng, e.lnglat.lat]);
that.map.setCenter([e.lnglat.lng, e.lnglat.lat - 0.1]);
});
that.map.add(marker);
}
},
使用方法如下：
此处我们也将 qiyeHtml 这个弹框信息封装为方法，当然此方法根据你具体的需求需要自定义，有时间还需要异步请求 ！！！
// 绘制企业及文字
this.addCommonMarkerFun(
[
{
name: 'xxxx', //该字段根据实际情况来定
longitude:112.23,
latitude: 37.56,
}
],
new AMap.Icon({
size: new AMap.Size(20, 20), // 图标尺寸
image:
"data:", // Icon的图像
imageSize: new AMap.Size(20, 20), // 根据所设置的大小拉伸或压缩图片
}),
this.qiyeHtml
);
qiyeHtml(e) {
// 此处可能会有异步请求，可加入await async 来进行处理！！！
const html = `<div style="width:2.6667rem;padding: 0.1rem;">
<p style="color: #fff;font-size: 0.16rem;font-weight: bold;">
${e.name}
</p>
<div class='flex-start' style='margin:0.1rem 0;'> <span>碳排放量：</span> <span>${e.yearTotal}吨</span> </div>
</div>`;
return html;
},
情形三：绘制区域
此需要需要给出具体的坐标闭合区域。
封装方法：
/**
* @description:
* @param {*} geoJsonData
* @param {*} type 1代表企业 2代表园区 3 绿地
* @return {*}
* @author: George Zhang
*/
drawGeoJson(geoJsonData, type = 1) {
let that = this;
let geoJson = new AMap.GeoJSON({
geoJSON: geoJsonData, // GeoJSON对象
getPolygon: function(geojson, lnglats) {
return new AMap.Polygon({
path: lnglats,
fillOpacity: 0.8,
fillColor: that.fillColor(geojson.properties.name, type),
fillOpacity: that.fillOpacity(geojson.properties.name, type),
strokeColor: "#B0E8C8",
name: geojson.properties.name,
borderWeight: 1,
strokeOpacity: 0.4,
});
},
});
geoJson.eachOverlay((e) => {
let that = this;
if (e.w.name) {
let fillColor = e.w.fillColor;
let fillOpacity = e.w.fillOpacity;
e.on("click", async (params) => {
that.map.setCenter([params.lnglat.lng, params.lnglat.lat - 0.1]);
const html = await that.myYuanquHtml(e.w.name);
that.addInfoWindow(html, [params.lnglat.lng, params.lnglat.lat]);
});
e.on("mouseover", () => {
e.setOptions({
fillColor: "#CB7F1F",
fillOpacity: 1,
});
});
e.on("mouseout", () => {
e.setOptions({
fillColor,
fillOpacity,
});
});
}
});
this.map.add(geoJson);
},
使用方法：
geoJsonData 的格式为如下的内容 （GeoJSON格式的数据）
{
type: "FeatureCollection",
features: [
{
geometry: {
coordinates: [
[
[112.5443997335351, 37.78031618392991],
[112.5442467093464, 37.78441214392258],
[112.5445342759263, 37.78764893351841],
[112.5454687381043, 37.79001597508982],
[112.5492412801307, 37.79962551542971],
[112.549960054558, 37.81383739056211],
[112.5756339657377, 37.8137928084111],
[112.5755981477979, 37.78834534929788],
[112.5762988222724, 37.78356866754082],
[112.5676752511216, 37.78371218538219],
[112.5675673829111, 37.78046084890205],
[112.5443997335351, 37.78031618392991],
],
],
type: "Polygon",
},
properties: {
UserID: 0,
name: "学府产业园区",
},
type: "Feature",
},
{
geometry: {
coordinates: [
[
[112.6109310562599, 37.87825393162834],
[112.6186623445191, 37.87869114011654],
[112.6189318724017, 37.87931788497126],
[112.624070428042, 37.87995845543765],
[112.6241242070624, 37.88068460933729],
[112.6256154928961, 37.88086962235363],
[112.624767353892, 37.87093242989624],
[112.6259708884497, 37.87093104681709],
[112.6265676816104, 37.87302248249204],
[112.6274839536567, 37.87386269388013],
[112.6288452775488, 37.87545787923099],
[112.631704201473, 37.87542930170126],
[112.6288580153967, 37.86517743047393],
[112.626195737938, 37.86462876720404],
[112.625556153919, 37.86023124021069],
[112.6225792253824, 37.86065965899524],
[112.6139553814875, 37.86068877083186],
[112.6114535000939, 37.86118773077254],
[112.6109279246743, 37.8777373512381],
[112.6109310562599, 37.87825393162834],
],
],
type: "Polygon",
},
properties: {
UserID: 0,
name: "阳曲产业园",
},
type: "Feature",
}
]
}
标签：20,name,type,lnglat,高德,AMap,new,绘制,maker 来源： https://www.cnblogs.com/teamemory/p/15342746.html