php 使用高德地图(一) 画多边形及编辑 获取坐标 (简单总结)

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首次使用高德api的话要先申请一个高德的key
主要说明:
1. 高德地图展示
2. 高德地图点击获取坐标
3. 高德地图鼠标绘制多边形

4. 高德地图鼠标 编辑多边形并获取坐标

<style>
    .map-list{float: left; margin-left: 10px;}
    .pbot10{ padding-bottom: 10px;}
    .marleft{ margin-left: 10px;}
    </style>
    <p class="panel panel-default">
        <p class="panel-body">        
        <p>            
        <p id="container" style="width: 70%; height: 500px; float: left;"></p>                
        <p style="margin-bottom: 5px;">                    
        <ul class="map-list-add">                        
        <?php 
        foreach ($oldRegionArr as $k => $v):
        ?>                            
        <li>
        [<?=$v;?>],
        </li>                        
        <?php endforeach;?>                    
        </ul>                    
        <ul class="map-list-hidden hidden">                        
        <?php foreach ($oldLngLatArr as $key => $val):?>                            
        <li>                                
        <?php foreach ($val as $k => $v):?>                                    
        <span><?=$v;?></span>                                
        <?php endforeach;?>                            
        </li>                        
        <?php endforeach;?>                    
        </ul>                    
        <textarea class="form-control hidden" name="region" rows="3">
        </textarea>                
        </p>                
        <a class="btn btn-primary btn-sm fl" id="clearMarker" onclick="clearMap()">清空所有
        </a>                
        <a class="btn btn-primary btn-sm fl marleft" id="huaMarker">生成抢修范围
        </a>                
        <br><br>                
        <a class="btn btn-primary btn-sm fl marleft" id="PolyEditor" onClick="startEditPolygon()">开始编辑抢修范围
        </a>                
        <a class="btn btn-primary btn-sm fl marleft" id="CircleEditor" onClick="closeEditPolygon()">结束编辑抢修范围
        </a>            
        </p>        
        </p>    
        </p>
        </p>
        </p>
        <script type="text/javascript" src="http://webapi.amap.com/maps?v=1.4.4&key=高德key&plugin=AMap.MouseTool,AMap.PolyEditor,AMap.CircleEditor">
        </script>
        <script type="text/javascript">    
        var city  = '济南';    
        //生成地图    
        var map = new AMap.Map('container',{        
        resizeEnable: true,        zoom: 13    
        });    
        //地图上添加工具    
        AMap.plugin(['AMap.ToolBar','AMap.Scale','AMap.OverView'],        
        function() {
            map.addControl(new AMap.ToolBar());            
            map.addControl(new AMap.Scale());        
            });    
            //设置地图中心    
            var lngLat = map.getCenter();    
            var lng = lngLat.lng;    
            var lat = lngLat.lat;    
            if(city) {
        map.setCity("" + city + "");    
        } else {
        map.setCenter([lng, lat]);    
        }    
        //清空地图    
        function clearMap() 
        {
        map.clearMap();        
        $('.map-list-add').html('');        
        positions = [];        
        $('textarea[name=region]').val('');        
        $('.map-list-hidden').html('');    
        }    
        //点击地图获取坐标    
        function huaNew() 
        {        
        var positions = [];        
        //地图上点击事件        
        map.on('click', function(e)
         {            
         //显示点击的坐标            
         var lngLat = e.lnglat.getLng() + ',' + e.lnglat.getLat();            
         //将坐标填的 ul            
         var html = $('.map-list-add').html();            
         html += '<li>[' + lngLat + ']</li>';            
         positions.push([e.lnglat.getLng(), e.lnglat.getLat()]);            
         $('.map-list-add').html(html);        
         });    
         }    
         //画多边形的参数    
         var xian = {        
         strokeColor: "#FF33FF", //线颜色        
         strokeOpacity: 0.2, //线透明度        
         strokeWeight: 3,    //线宽        
         fillColor: "#1791fc", //填充色        
         fillOpacity: 0.35//填充透明度    
         };    
         //画多边形    
         var mouseTool = new AMap.MouseTool(map);   
         //在地图中添加MouseTool插件    
         AMap.event.addDomListener(document.getElementById('huaMarker'), 'click', function()
          {        
          clearMap();        
          huaNew();        
          mouseTool.polygon(xian);    
          }, false);    
          //默认加载的多边形    
          $(function () 
          {        
          var markers = [], positions = [];        
          var valRegion = '[116.97174,36.707879],[116.986675,36.681658],[116.983241,36.677665],[116.954059,36.675256],';        
          var len = $('.map-list-hidden li').length;        
          for(var p=0; p < len; p++) {            
          var posit = [];            
          var defaultLng = $('.map-list-hidden li:eq('+p+') span:eq(0)').html();            
          var defaultLat = $('.map-list-hidden li:eq('+p+') span:eq(1)').html();            
          posit.push(parseFloat(defaultLng));            
          posit.push(parseFloat(defaultLat));            
          positions.push(posit);        
          }        
          $('textarea[name=region]').val(valRegion);        
          //编辑多边形        
          var _polygon = (function(){            
          var arr = positions;            
          xian.path = positions;            
          xian.map = map;            
          return new AMap.Polygon(xian);        
          })();        
          //编辑多边形初始化        
          _polygonEditor = new AMap.PolyEditor(map, _polygon);        
          //开始编辑        
          startEditPolygon = function(){            
          _polygonEditor.open();        
          }        
          //结束编辑        
          closeEditPolygon = function(){            
          var html = '', htmlText = '';            
          _polygonEditor.close();            
          var a =  _polygon.getPath();            
          for(var q = 0; q < a.length; q++) {                
          var posit = [];                
          posit.push(parseFloat(a[q]['lng']));                
          posit.push(parseFloat(a[q]['lat']));                
          html += "<li>[" + posit + "],</li>";                
          htmlText += "[" + posit + "],";            
          }            
          $('.map-list-add').html(html);            
          $('textarea[name=region]').val(htmlText);        
          }
    });
    </script>

参考：

http://lbs.amap.com/api/javascript-api/guide/create-map/show-map 显示地图

http://lbs.amap.com/api/javascript-api/guide/draw-on-map/marker-point  点标注

http://lbs.amap.com/api/javascript-api/example/marker/marker-content  点标注例子

http://lbs.amap.com/api/javascript-api/example/overlayers/polyline-circle-polygon 折线、多边形、圆例子

http://lbs.amap.com/api/javascript-api/example/mouse-operate-map/mouse-draw-overlayers 鼠标绘制点线面

http://lbs.amap.com/faq/web/javascript-api/327 鼠标工具绘制覆盖物，如何获取覆盖物的位置/范围/路径？

http://lbs.amap.com/api/javascript-api/example/overlayers/edit-polyline-circle-polygon 编辑折线、多边形、圆

http://lbs.amap.com/faq/web/javascript-api/editpolygon-getpath 编辑多边形后如何获取多边形的路径？

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