<!DOCTYPE html>
<html>
<head>
<meta charset='UTF-8'/>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no'/>
<link href='http://bigemap.com:9000/bigemap-gl.js/v1.1.0/Widgets/widgets.css' rel='stylesheet'/>
<script src='http://bigemap.com:9000/bigemap-gl.js/v1.1.0/bigemap-gl.js'></script>
<style>
body {
margin: 0;
padding: 0;
}
#container {
position: absolute;
top: 0;
bottom: 0;
width: 100%;
}
.info{
position: fixed;
top:0;
color: #8a6d3b;
z-index: 99;
margin: 0;
background-color: #fcf8e3;
border-color: #faebcc;
left: 0;
right: 0;
text-align: center;
}
#button{
position: absolute;
top:50px;
right: 20px;
z-index: 999;
}
.info{
position: fixed;
top:0;
color: #8a6d3b;
z-index: 99;
margin: 0;
background-color: #fcf8e3;
border-color: #faebcc;
left: 0;
right: 0;
text-align: center;
}
.bmgl-widget-credits{display:none}
</style>
<title>获取相机的位置</title>
</head>
<body>
<div class="info">
当前相机的位置:
</div>
<button id="button">获取相机的位置，并还原</button>
<div id='container'></div>
<script>
bmgl.Config.HTTP_URL = 'http://bigemap.com:9000';
var viewer = new bmgl.Viewer('container', {
// terrainId: 'bigemap.9af15d8e',
//timeline:true,
//animation:true,
mapId: 'bigemap.zhongkexingtu'
});
var cacheData=localStorage.getItem('cameraPosition');
if (cacheData){
try{
cacheData=JSON.parse(cacheData);
viewer.camera.setView({
destination:bmgl.Cartesian3.fromDegrees(cacheData.destination.lng,cacheData.destination.lat,cacheData.destination.height),
orientation:cacheData.orientation
});
}catch (e){
console.log(e);
}
}
document.getElementById('button').onclick=function (){
//获取最新的位置
var view={};
var p=bmgl.Cartographic.fromCartesian(viewer.camera.position);
view.destination={lng:bmgl.Math.toDegrees(p.longitude),lat:bmgl.Math.toDegrees(p.latitude),height:p.height}
view.orientation={heading:viewer.camera.heading,roll:viewer.camera.roll,pitch:viewer.camera.pitch}
console.log(view);
var info=['lng:',view.destination.lng,'lat:',view.destination.lat,'height:',view.destination.height,'heading:',view.orientation.heading,'pitch:',view.orientation.pitch,'roll:',view.orientation.roll];
document.querySelector('.info').innerHTML='当前相机的位置:'+info.join(" ");
localStorage.setItem('cameraPosition',JSON.stringify(view));
}
</script>
</body>
</html>
源码