基于openlayer4的地图卷帘效果
目录
1.原理说明
基于openlayer4实现地图卷帘效果，说白了，就是创建两个地图容器，通过控制最上面的dom的样式中的rect（裁剪）来实现。
2.代码说明
<!DOCTYPE html>
<html>
<head>
<title>地图卷帘效果</title>
<link rel="stylesheet" href="https://openlayers.org/en/v4.6.4/css/ol.css" type="text/css">
<script src="https://openlayers.org/en/v4.6.4/build/ol.js"></script>
<style>
body{
overflow: hidden;
}
html,body,.map{
width: 100%;
height: 100%;
position:absolute;
box-sizing: border-box;
padding: 0;
margin: 0;
}
</style>
</head>
<body>
<div id="map_1" class="map"></div>
<div id="map_2" class="map "></div>
<script>
var map_1 = map = new ol.Map({
target:"map_1",
view:new ol.View({
projection: "EPSG:4326",
center:[115.7555794477557, 22.6070466884657],
zoom:7
}),
layers:[
new ol.layer.Tile({source:new ol.source.OSM()})
]
});
var map_2 = map = new ol.Map({
target:"map_2",
view:map_1.getView(),
layers:[
new ol.layer.Tile({
source: new ol.source.XYZ({
url:'http://t3.tianditu.cn/DataServer?T=img_w&X={x}&Y={y}&L={z}'
}),
projection: "EPSG:4326",
id:"影像"
})
]
});
document.getElementById('map_2').onmousemove=function(e){
console.log(e);
e.stopPropagation();
var offsetX=e.x,offsetY=e.y,width=document.body.clientWidth,height=document.body.clientHeight;
document.getElementById('map_2').style.clip='rect(0px,'+offsetX+'px,'+height+'px,0px)';
}
document.getElementById('map_1').onmousemove=function(e){
console.log(e);
e.stopPropagation();
var offsetX=e.x,offsetY=e.y,width=document.body.clientWidth,height=document.body.clientHeight;
document.getElementById('map_2').style.clip='rect(0px,'+offsetX+'px,'+height+'px,0px)';
}
</script>
</body>
</html>
转载自：https://blog.csdn.net/YH20090580118/article/details/79666387
