Google Maps fitBounds无法正常运行

Question

Google Maps fitBounds无法正常运行

use*_*820 7 javascript google-maps google-maps-api-3 fitbounds

我的googlemaps fitBounds函数有问题.

for (var i = 0; i < countries.length; i++) {
 var country = countries[i];
 var latlng = new google.maps.LatLng(parseFloat(country.lat), parseFloat(country.lng));
 mapBounds.extend(latlng); 
}

map.fitBounds(mapBounds);

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某些图标将显示在视口/可见区域之外.

想法？

提前致谢.

Answer 1

Dan*_*llo 9

考虑以下示例,它将在美国东北部生成10个随机点,并应用该fitBounds()方法.

<!DOCTYPE html>
<html> 
<head> 
   <meta http-equiv="content-type" content="text/html; charset=UTF-8"/> 
   <title>Google Maps LatLngBounds.extend() Demo</title> 
   <script src="http://maps.google.com/maps/api/js?sensor=false" 
           type="text/javascript"></script> 
</head> 
<body> 
   <div id="map" style="width: 400px; height: 300px;"></div> 

   <script type="text/javascript"> 

   var map = new google.maps.Map(document.getElementById('map'), { 
     mapTypeId: google.maps.MapTypeId.TERRAIN
   });

   var markerBounds = new google.maps.LatLngBounds();

   var randomPoint, i;

   for (i = 0; i < 10; i++) {
     // Generate 10 random points within North East USA
     randomPoint = new google.maps.LatLng( 39.00 + (Math.random() - 0.5) * 20, 
                                          -77.00 + (Math.random() - 0.5) * 20);

     // Draw a marker for each random point
     new google.maps.Marker({
       position: randomPoint, 
       map: map
     });

     // Extend markerBounds with each random point.
     markerBounds.extend(randomPoint);
   }

   // At the end markerBounds will be the smallest bounding box to contain
   // our 10 random points

   // Finally we can call the Map.fitBounds() method to set the map to fit
   // our markerBounds
   map.fitBounds(markerBounds);

   </script> 
</body> 
</html>

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多次刷新此示例,没有标记出现在视口之外.最多,当隐藏在控件后面时,有时标记会从顶部略微剪裁:

谷歌地图LatLngBounds.extend()演示http://img825.imageshack.us/img825/7424/fitboundsfit.png

fitBounds()总是在LatLngBounds对象和视口之间留下小的余量也是没有价值的.这在下面的屏幕截图中清楚地显示,其中红色边界框表示LatLngBounds传递给fitBounds()方法的方框:

fitBounds Padding http://img204.imageshack.us/img204/9149/fitit.png

fitBounds Padding http://img441.imageshack.us/img441/9615/fitus.png

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