OL3实现多图联动
概述:
很多会有多图联动的需求,本文讲述如何在OL3中实现多图的联动。在OL3中,实现多图联动比较简单,只要所有的map通用一个view即可。
效果:
测试代码:
- <html xmlns="http://www.w3.org/1999/xhtml">
- <head>
- <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
- <title>multimap</title>
- <link rel="stylesheet" type="text/css" href="http://localhost/ol3/css/ol.css"/>
- <style type="text/css">
- body, #map1,#map2 {
- border: 0px;
- margin: 0px;
- padding: 0px;
- font-size: 13px;
- overflow: hidden;
- }
- #map1,#map2{
- width: 45%;
- height: 100%;
- float: left;
- border: 1px solid #f00;
- }
- </style>
- <script type="text/javascript" src="http://localhost/ol3/build/ol.js"></script>
- <script type="text/javascript" src="http://localhost/jquery/jquery-1.8.3.js"></script>
- <script type="text/javascript">
- function init(){
- var format = 'image/png';
- var bounds = [73.4510046356223, 18.1632471876417,
- 134.976797646506, 53.5319431522236];
- var untiled = new ol.layer.Image({
- source: new ol.source.ImageWMS({
- ratio: 1,
- url: 'http://localhost:8088/geoserver/lzugis/wms',
- params: {'FORMAT': format,
- 'VERSION': '1.1.1',
- LAYERS: 'lzugis:province',
- STYLES: ''
- }
- })
- });
- var view = new ol.View({
- projection: new ol.proj.Projection({
- code: 'EPSG:4326',
- units: 'degrees'
- })
- })
- var map1 = new ol.Map({
- controls: ol.control.defaults({
- attribution: false
- }),
- target: 'map1',
- layers: [untiled],
- view:view
- });
- map1.getView().fitExtent(bounds, map1.getSize());
- var map2 = new ol.Map({
- controls: ol.control.defaults({
- attribution: false
- }),
- target: 'map2',
- layers: [untiled],
- view:view
- });
- map2.getView().fitExtent(bounds, map2.getSize());
- }
- </script>
- </head>
- <body onLoad="init()">
- <div id="map1"></div>
- <div id="map2"></div>
- </body>
- </html>
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