如何让Google地图显示整个多边形? [英] How do I get Google Maps to show a whole polygon?
问题描述
我有一组GPolygon对象附加到我的域模型中的对象,并添加到我的页面上的地图中。域对象显示在同一页面的列表中,当用户点击其中一个时,我想显示相关的多边形。
我想要整个多边形要显示,理想情况下我希望地图以多边形中心为中心。
我希望会有地图API调用......
myMap.makeSureYouCanSeeAllThisPolygon(aPolygon);
但我一直找不到。
如果我必须手动执行此操作,那么很明显我可以很容易地找出对中情况,但我如何计算缩放比例?
您可以通过使用 aPolygon.getBounds()。获取多边形的中心点getCenter );
,然后使用 myMap.setCenter()
方法返回的 GLatLng
。
要获得缩放级别,您可以使用 myMap.getBoundsZoomLevel(aPolygon.getBounds());
然后使用这与 myMap.setZoom()
方法。
I have a set of GPolygon objects which are attached to objects in my domain model and are added to a map on my page. The domain objects are being shown in a list on the same page and when the user clicks on one of them I want to show the associated polygon.
I want the whole polygon to be showing and ideally I want the map to be centred on the polygon centre.
I was hoping that there would be a maps API call along the lines of...
myMap.makeSureYouCanSeeAllThisPolygon(aPolygon);
but I haven't been able to find one.
If I have to do this manually, then I can obviously figure out the centering easily, but how do I figure out the zoom?
You can get the centre point of a polygon by using aPolygon.getBounds().getCenter();
and then using the GLatLng
returned with the myMap.setCenter()
method.
To get the zoom level, you can use myMap.getBoundsZoomLevel(aPolygon.getBounds());
then use this with myMap.setZoom()
method.
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