openlayers4点的扩散基于openlayers4实现点的扩散效果

时间:2021-03-28 嚜溟人气:0

想了解基于openlayers4实现点的扩散效果的相关内容吗，嚜溟在本文为您仔细讲解openlayers4点的扩散的相关知识和一些Code实例，欢迎阅读和指正，我们先划重点：openlayers4点的扩散效果,openlayers点的扩散,openlayers点扩散，下面大家一起来学习吧。

<!DOCTYPE html> 
<html lang="en"> 
<head> 
 <meta charset="UTF-8"> 
 <title>Title</title> 
 <link rel="stylesheet" href="https://openlayers.org/en/v4.6.4/css/ol.css" type="text/css"> 
 <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x --> 
 <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script> 
 <script src="https://openlayers.org/en/v4.6.4/build/ol.js"></script> 
 <style> 
  .css_animation{ 
   height:100px; 
   width:100px; 
   border-radius: 50%; 
   background: rgba(255, 0, 0, 0.9); 
   transform: scale(0); 
   animation: myfirst 3s; 
   animation-iteration-count: infinite; 
  } 
  @keyframes myfirst{ 
   to{ 
    transform: scale(2); 
    background: rgba(0, 0, 0, 0); 
   } 
  } 
 
 </style> 
</head> 
<body> 
 <div id="map" style="width: 100%;height: 100%"></div> 
 <script> 
  var map = new ol.Map({ 
   layers:[new ol.layer.Tile({ 
    source:new ol.source.OSM() 
   })], 
   target:'map', 
   view:new ol.View({ 
    center: [12950000, 4860000], 
    zoom:7 
   }) 
  }); 
 
  var point_div = document.createElement('div'); 
  point_div.className = 'css_animation'; 
  point_overlay = new ol.Overlay({ 
   element:point_div, 
   positioning:'center-center' 
  }); 
  map.addOverlay(point_overlay); 
 
  point_overlay.setPosition([12950000, 4860000]); 
 </script> 
</body> 
</html>

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openlayers4点的扩散 基于openlayers4实现点的扩散效果

openlayers4点的扩散基于openlayers4实现点的扩散效果