Question

这是我的代码，我想根据地图上的标记位置调整自动缩放和居中位置，以便每个标记都能在最小可能缩放时隐藏

var mapOptions = {
                    center: new google.maps.LatLng('<?php echo $latitude; ?>', '<?php echo $longitude; ?>'),  
                    zoom: 12,
                      scrollwheel: false,
                      disableDoubleClickZoom: true,
                    mapTypeId: google.maps.MapTypeId.ROADMAP
                };
                map = new google.maps.Map(document.getElementById("map-canvas"), mapOptions);

Answer 1

希望这有帮助。

var zoom = 12;
              var lat1 = '<?php echo $first_lat; ?>';
              var lat2 = '<?php echo $latitude; ?>';
              var lon1 = '<?php echo $first_lng; ?>';
              var lon2 = '<?php echo $longitude; ?>';
              var unit = 'M';



            function distance(lat1, lon1, lat2, lon2, unit) {
      var radlat1 = Math.PI * lat1/180
      var radlat2 = Math.PI * lat2/180
      var radlon1 = Math.PI * lon1/180
      var radlon2 = Math.PI * lon2/180
      var theta = lon1-lon2
      var radtheta = Math.PI * theta/180
      var dist = Math.sin(radlat1) * Math.sin(radlat2) + Math.cos(radlat1) * Math.cos(radlat2) * Math.cos(radtheta);
      dist = Math.acos(dist)
      dist = dist * 180/Math.PI
      dist = dist * 60 * 1.1515
      if (unit=="K") { dist = dist * 1.609344 }
      if (unit=="N") { dist = dist * 0.8684 }
      return dist
     }
     var dis = distance(lat1, lon1, lat2, lon2, unit);

      // change value according to your needs.

       if (dis > '2.0' && dis < '3.9'){   
            zoom = 11

           } else if (dis > '4.0' && dis < '5.9'){
            zoom = 10;

           } else if (dis > '6.0' && dis < '9.9'){
            zoom = 9;

           } else if (dis > '10.0'){
            zoom = 8;

           } 



    var mapOptions = {
                 center: new google.maps.LatLng(lat1,lon1),   
                 zoom: zoom,
                   scrollwheel: false,
       disableDoubleClickZoom: true,
                 mapTypeId: google.maps.MapTypeId.ROADMAP
             };
             map = new google.maps.Map(document.getElementById("map-canvas"), mapOptions);
             {
      /*
       FOLLOW YOUR OTHER MAP CODE <../> 
       */

              }

由于

如何设置自动变焦＆amp;汽车中心根据纬度经度没有fitBounds？

1 个答案: