js呼叫百度地圖介面繪製任意多邊形並獲取每個點的經緯度等

abcByme發表於2018-11-13
JS地圖

來自：https://blog.csdn.net/u013239236/article/details/52213977 侵刪

<!DOCTYPE html>
<html>
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
    <style type="text/css">
    body, html{width: 100%;height: 100%;margin:0;font-family:"微軟雅黑";}
    #allmap {width: 100%; height:500px; overflow: hidden;}
    #result {width:100%;font-size:12px;}
    dl,dt,dd,ul,li{
        margin:0;
        padding:0;
        list-style:none;
    }
    p{font-size:12px;}
    dt{
        font-size:14px;
        font-family:"微軟雅黑";
        font-weight:bold;
        border-bottom:1px dotted #000;
        padding:5px 0 5px 5px;
        margin:5px 0;
    }
    dd{
        padding:5px 0 0 5px;
    }
    li{
        line-height:28px;
    }
    </style>
     <script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=5E5EE28a7615536d1ffe2ce2a3667859"></script>
    <!--載入滑鼠繪製工具-->
    <script type="text/javascript" src="http://api.map.baidu.com/library/DrawingManager/1.4/src/DrawingManager_min.js"></script>
    <link rel="stylesheet" href="http://api.map.baidu.com/library/DrawingManager/1.4/src/DrawingManager_min.css" />
    <!--載入檢索資訊視窗-->
    <script type="text/javascript" src="http://api.map.baidu.com/library/SearchInfoWindow/1.4/src/SearchInfoWindow_min.js"></script>
    <link rel="stylesheet" href="http://api.map.baidu.com/library/SearchInfoWindow/1.4/src/SearchInfoWindow_min.css" />
    <title>百度地圖API功能演示</title>
</head>
<body>
    <div id="allmap" style="overflow:hidden;zoom:1;position:relative;">    
        <div id="map" style="height:100%;-webkit-transition: all 0.5s ease-in-out;transition: all 0.5s ease-in-out;">
       </div>
    </div>
    <div id="result">
        <input type="button" value="獲取繪製的覆蓋物個數" onclick="alert(overlays.length)"/>
        <input type="button" value="清除所有覆蓋物" onclick="clearAll()"/>
        <input type="button"  value="獲取多邊形的頂點" onclick="getPoint()"/><br/>
        <input type="button"  value="開啟線、面編輯功能" onclick="Editing(`enable`)"/>
        <input type="button"  value="關閉線、面編輯功能" onclick="Editing(`disable`)"/>
        <input type="button"  value="顯示原有多邊形" onclick="showPolygon(this)" /><br/>
        
        <input type="button"  value="畫多邊形" onclick="draw(BMAP_DRAWING_POLYGON)" />
         <input type="button"  value="畫矩形" onclick="draw(BMAP_DRAWING_RECTANGLE)" />
          <input type="button"  value="畫線" onclick="draw(BMAP_DRAWING_POLYLINE)" /> 
          <!-- <input type="button"  value="畫點" onclick="draw(BMAP_DRAWING_MARKER)" />-->
          <span>右鍵獲取任意點的經緯度</span>
    </div>
    <div id="resultShape"></div>
     <div id="shape">座標為</div>
      
<script type="text/javascript">
    function $(id){
    return document.getElementById(id);
}
 
    // 百度地圖API功能
    var map = new BMap.Map(`map`);
    var poi = new BMap.Point(113.948913,22.530844);
    map.centerAndZoom(poi, 16);
    map.enableScrollWheelZoom();  
    var overlays = [];
    var overlaycomplete = function(e){
        overlays.push(e.overlay); 
    };
    var styleOptions = {
        strokeColor:"red",    //邊線顏色。
        fillColor:"red",      //填充顏色。當引數為空時，圓形將沒有填充效果。
        strokeWeight: 3,       //邊線的寬度，以畫素為單位。
        strokeOpacity: 0.8,       //邊線透明度，取值範圍0 - 1。
        fillOpacity: 0.6,      //填充的透明度，取值範圍0 - 1。
        strokeStyle: `solid` //邊線的樣式，solid或dashed。
    }
    
    //例項化滑鼠繪製工具
    var drawingManager = new BMapLib.DrawingManager(map, {
        isOpen: false, //是否開啟繪製模式
        //enableDrawingTool: true, //是否顯示工具欄
        drawingToolOptions: {
            anchor: BMAP_ANCHOR_TOP_RIGHT, //位置
            offset: new BMap.Size(5, 5), //偏離值
        },
        circleOptions: styleOptions, //圓的樣式
        polylineOptions: styleOptions, //線的樣式
        polygonOptions: styleOptions, //多邊形的樣式
        rectangleOptions: styleOptions //矩形的樣式
    });  
    
     //新增滑鼠繪製工具監聽事件，用於獲取繪製結果
    drawingManager.addEventListener(`overlaycomplete`, overlaycomplete);
    
    map.addEventListener("rightclick",function(e){
        if(confirm(e.point.lng + "," + e.point.lat)){
            $("shape").innerHTML=$("shape").innerHTML+" <br/>("+e.point.lng+","+e.point.lat+")";
            }
        });
    function draw(type){
        drawingManager.open(); 
        drawingManager.setDrawingMode(type);
    }    
        
    function clearAll() {
        for(var i = 0; i < overlays.length; i++){
            map.removeOverlay(overlays[i]);
        }
        overlays.length = 0   
    }
    function getPoint(){
        $("resultShape").innerHTML=``;
        for(var i = 0; i < overlays.length; i++){
            var overlay=overlays[i].getPath();
            $("resultShape").innerHTML=$("resultShape").innerHTML+overlay.length+`邊形:<br/>`;
            for(var j = 0; j < overlay.length; j++){
                var grid =overlay[j];
                $("resultShape").innerHTML=$("resultShape").innerHTML+(j+1)+"個點:("+grid.lng+","+grid.lat+");<br/>";
            }
        }
    }
    function Editing(state){
        for(var i = 0; i < overlays.length; i++){
            state==`enable`?overlays[i].enableEditing():overlays[i].disableEditing();
        }
    }
    
    function  showPolygon(btn){
      var polygon = new BMap.Polygon([
          new BMap.Point(113.941853,22.530777),
          new BMap.Point(113.940487,22.527789),
          new BMap.Point(113.94788,22.527597),
          new BMap.Point(113.947925,22.530618)
      ], styleOptions);  //建立多邊形
      map.addOverlay(polygon);   //增加多邊形
      // overlays.push(polygon); //是否把該影像加入到編輯和刪除行列
       btn.setAttribute(`disabled`,`false`);
       showText();
     }
     
     function showText(){
        var opts = {
        position : new BMap.Point(113.941853,22.530777),    // 指定文字標註所在的地理位置
        offset   : new BMap.Size(30, 30)    //設定文字偏移量
       }
     var label = new BMap.Label("不可編輯", opts);  // 建立文字標註物件
        label.setStyle({
        color : "black",
         fontSize : "16px",
        fillColor:"red",      //填充顏色。當引數為空時，圓形將沒有填充效果。
        });
      map.addOverlay(label);  
     }
</script>
</body>
</html>

 

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