BIGEMPA Js API示例中心
<!DOCTYPE html>
<html>
<head>
<meta charset='UTF-8' />
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<!--
以下CSS地址请在安装软件了替换成本地的地址
CSS地址请使用:
http://192.168.1.222:9000/bigemap.js/v2.1.0/bigemap.css
软件下载地址 http://www.bigemap.com/reader/download/detail201802017.html
-->
<link href='http://www.bigemap.com:9000/bigemap.js/v2.1.0/bigemap.css' rel='stylesheet' />
<link href="http://www.bigemap.com/Public/css/button.min.css" rel="stylesheet">
<!--
JS地址请使用：
http://192.168.1.222:9000/bigemap.js/v2.1.0/bigemap.js
-->
<script src='http://www.bigemap.com:9000/bigemap.js/v2.1.0/bigemap.js'></script>
<!--
引入加载KML的JS插件
-->
<script type="text/javascript" src="http://www.bigemap.com/mapoffline/js/togeojson.js"></script>
<!-- 引入Geojson转换KML的js插件 -->
<script src="http://demo.bigemap.com/static/map/js/tokml.js"></script>
<style>
body {
margin: 0;
padding: 0;
}
#map {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
.tool {
position: absolute;
z-index: 10;
right: 10px;
top: 60px;
}
.info {
position: fixed;
top: 40px;
color: #8a6d3b;
z-index: 99;
margin: 0;
background-color: #fcf8e3;
border-color: #faebcc;
left: 0;
right: 0;
text-align: center;
}
#ceng {
position: absolute;
top: 120px;
left: 0;
z-index: 10;
}
#ceng::before {
content: '当前地图源:';
position: absolute;
left: 0;
right: 0;
bottom: -10px;
padding: 5px 10px;
top: -40px;
background-color: #369;
border-radius: 5px;
font-size: 14px;
color: #fff;
z-index: -1;
}
#checkExport {
display: none;
position: absolute;
left: 50%;
top: 50%;
transform: translate(-50%, -50%);
width: 600px;
height: 400px;
background-color: skyblue;
border: slategrey 1px solid;
z-index: 10000;
padding: 10px 0 0 10px;
}
#checkExport>div {
padding: 10px;
outline: turquoise 1px solid;
}
#checkExport>button {
position: absolute;
right: 0;
top: 0;
margin: 5px 5px 0 0;
}
</style>
<title>切换图层</title>
</head>
<body>
<p class="info">
数据保存在本地，刷新会消失，仅仅用作测试,左侧仅供纠偏效果展示使用，切换会清楚当前覆盖物
</p>
<p class="tool">
<a id="satellite" class="button button-tiny button-rounded button-primary" href="javascript:void (0);">导入KML</a>
<a id="export" class="button button-tiny button-rounded button-primary" href="javascript:void (0);">导出</a>
<input type="file" accept=".kml,.json,.geojson" style="display: none" id="upload">
</p>
<div id="ceng">
<a href="javascript:void(0)" data-type="arcgis-satellite" data-map="arcgis"
class="button button-tiny button-rounded">arcgis(wgs 84)</a>
<a href="javascript:void(0)" data-type="baidu-map" data-map="baidu"
class="button button-tiny button-rounded">百度(bd09)</a>
<a href="javascript:void(0)" data-type="amap-map" data-map="amap"
class="button button-tiny button-rounded button-primary">高德(gcj02)</a>
</div>
<div id="checkExport">
<div>
<span>导入数据坐标系</span>
<select name="" id="from">
<option value="">请选择</option>
<option value="WGS84">WGS84(无偏移)</option>
<option value="Gcj-02">火星坐标系(Gcj-02)</option>
<option value="BD-09">百度坐标系(BD-09)</option>
</select>
</div>
<div>
<span>导出数据源</span>
<select name="" id="to" autofocus>
<option value="">请选择</option>
<option value="WGS84">WGS84(无偏移)</option>
<option value="Gcj-02">火星坐标系(Gcj-02)</option>
<option value="BD-09">百度坐标系(BD-09)</option>
</select>
</div>
<div>
<span>导出格式</span>
<select name="" id="form" autofocus>
<option value="">请选择</option>
<option value="geoJSON">geoJSON</option>
<option value="kml">kml</option>
</select>
</div>
<a href="javascript:void(0)" class="button button-tiny button-rounded button-primary"
download="javascript:void(0)">确认导出</a>
<button>x</button>
</div>
<a download="" style="display: none;" id="download"></a>
<div id='map'></div>
<script src="http://www.bigemap.com/Public/common/js/jquery.min.js"></script>
<script src="http://demo.bigemap.com/static/map/js/tokml.js"></script>
<script src="http://www.bigemap.com/Public/js/jiup.min.js"></script>
<script type="text/javascript">
// 软件配置信息地址，软件安装完成之后使用本地地址，如：http://192.168.1.222:9000
BM.Config.HTTP_URL = 'http://www.bigemap.com:9000';
var map = BM.map('map', 'bigemap.amap-map', {
center: [30.66, 104.001],
zoom: 15,
zoomControl: true,
attributionControl: false,
preferCanvas: true, //适用于数据量大时 地图反应速度加快
});
var btns = document.querySelectorAll('#ceng a');
var geo
$('#ceng').on('click', 'a', function () {
$('#ceng a').removeClass('button-primary');
$(this).addClass('button-primary');
var type = $(this).data('map');
var crs = type === 'baidu' ? BM.CRS.Baidu : BM.CRS.EPSG3857;
geo && geo.remove(), geo = null;
map.remove();
map = BM.map('map', 'bigemap.{id}'.replace('{id}', $(this).data('type')), {
crs,
center: [30.66, 104.001],
zoom: 15,
preferCanvas: true,
zoomControl: true
});
if (cacheData) {
geo = BM.geoJSON(cacheData, {
style: function (feature) {}
}).bindPopup(function (layer) {
return `<div><h4>${layer.feature.properties.name}</h4>
<p>${layer.feature.properties.description}</p></div>`
}).addTo(map);
map.fitBounds(geo.getBounds());
}
});
var blob, href, geo, cacheData, geo_copy;
var bdcj = {
features: [],
type: "FeatureCollection"
},
cjbd = {
features: [],
type: "FeatureCollection"
};
var filename;
var ccdata
$('#upload').on('change', function () {
var file = this.files[0];
var extension = file.name.split('.');
filename = extension[0];
extension = extension.pop();
if (extension !== 'kml' && extension !== 'json'&&extension !== 'geojson') {
alert('只能是KML或json格式');
return;
}
var reader = new FileReader();
reader.readAsText(file);
reader.onload = function () {
var dom, geojsonFeature ;
if (extension == 'kml') {
dom =
(new DOMParser()).parseFromString(this.result, 'text/xml');
geojsonFeature =
toGeoJSON.kml(dom);
}else{
geojsonFeature=JSON.parse(this.result)
}
cacheData = geojsonFeature;
geo && geo.remove();
geo = BM.geoJSON(geojsonFeature, {
style: function (feature) {},
}).bindPopup(function (layer) {
return `<div><h4>${layer.feature.properties.name}</h4>
<p>${layer.feature.properties.description}</p></div>`
}).addTo(map);
map.fitBounds(geo.getBounds());
}
});
$('#satellite').on('click', function () { //显示上传
$('#upload').click();
});
$('#export').click(function () {
$('#checkExport').show();
})
$('#checkExport>button').click(function () {
$('#from').val('');
$('#to').val('');
$('#form').val('');
$('#checkExport').hide();
})
$('#checkExport>a').click(function () {
let from = $('#from').val(); //从
let to = $('#to').val(); //到
let form = $('#form').val(); //格式
if (from && to && form && geo) {
let fn
if (from == to) {
fn = (lat, lng) => {
return [lat, lng]
}
transform(fn);
} else {
if (from == 'WGS84') {
if (to == 'Gcj-02') {
fn = wgs84togcj02;
transform(fn);
} else {
fn = (lat, lng) => {
return gcj02tobd09(...wgs84togcj02(lat, lng))
}
transform(fn);
}
} else if (from == 'Gcj-02') {
if (to == 'WGS84') {
fn = gcj02towgs84
transform(fn);
} else {
fn = gcj02tobd09
transform(fn);
}
} else {
if (to == 'WGS84') {
fn = (lat, lng) => {
return gcj02towgs84(...bd09togcj02(lat, lng))
}
transform(fn);
} else {
fn = bd09togcj02
transform(fn);
}
}
}
$('#checkExport>button').click(); //清空选项
if (form == 'kml') {
var blob = new Blob([tokml(geo1.toGeoJSON())]);
var href = URL.createObjectURL(blob);
$('#download').prop('href', href);
$('#download').prop('download', `${filename}.kml`);
document.querySelector('#download').click();
} else {
var blob = new Blob([JSON.stringify(geo1.toGeoJSON())]);
var href = URL.createObjectURL(blob);
$('#download').prop('href', href);
$('#download').prop('download', `${filename}.geojson`);
document.querySelector('#download').click();
}
} else {
alert('巧妇难为无米之炊哦，把数据和选项整好再点呗')
}
})
function transform(fn) {
geo1 = BM.geoJSON(cacheData, {
coordsToLatLng(feature, index) {
let latlng = fn(feature[1], feature[0]);
return BM.latLng(latlng[0], latlng[1]);
}
})
}
</script>
</body>
</html>