blocks|key|3114034|text|如果我理解正确的话，你需要一种方法让用户输入一些折线/多边形。如果是这样的话-看看这个example，其中多边形是通过单击地图创建的。它使用了一些类PolygonCreator和jquery。您可以采用此方法，并将结果保存在表单字段中(有多种选择:+JSON或您自己的序列化方法)|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3114035|如果您只需要在地图上显示多边形，那么您甚至可以利用geometry.encoding+library并将编码折线存储到数据库中。或者，如果您要使用空间查询(例如，检测某个点是否落入您的多边形中)，您最好使用某种类型的空间扩展：MySQL+spatial+extensions、PostGIS等。在MySQL中，您可以将折线存储到Polyline或Polygon类型的列中，这是基于OpenGIS格式的。坦率地说，在stackoverflow上有一大堆相关的信息。|style|CODE|3114036|entityMap|0|LINK|mutability|MUTABLE|url|http://www.the-di-lab.com/polygon/|1|http://code.google.com/intl/ru/apis/maps/documentation/javascript/geometry.html#Encoding|2|http://dev.mysql.com/doc/refman/5.0/en/spatial-extensions.html^0|17|7|0|0|4K|8|4T|7|P|P|1|35|O|2|0^^$0|@$1|2|3|4|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|D|3|E|5|6|7|X|8|@$A|Y|B|Z|F|G]|$A|10|B|11|F|G]]|9|@$A|12|B|13|1|14]|$A|15|B|16|1|17]]|C|$]]|$1|H|3|-4|5|6|7|18|8|@]|9|@]|C|$]]]|I|$J|$5|K|L|M|C|$N|O]]|P|$5|K|L|M|C|$N|Q]]|R|$5|K|L|M|C|$N|S]]]]

If I understand you properly - You need a way to get users inputting some polyline/polygon. If so - take a look at this <a href="http://www.the-di-lab.com/polygon/" rel="nofollow">example</a>, where polygon is created by clicking a map. It uses some class PolygonCreator and jquery. You can adopt this method, and save result in form field (there possible a number of options: JSON or your own method of serialization)

If you just need to show that polygons on map and nothing more: you even can take advantage of <a href="http://code.google.com/intl/ru/apis/maps/documentation/javascript/geometry.html#Encoding" rel="nofollow">geometry.encoding library</a> and store encoded polylines into database. Or, if you are going to use spatial queries (for instance - detect if some point falls into your polygons) you better use spatial extnsion of some sort: <a href="http://dev.mysql.com/doc/refman/5.0/en/spatial-extensions.html" rel="nofollow">MySQL spatial extensions</a>, PostGIS, etc. In MySQL you can store polyline into <code>Polyline</code> or <code>Polygon</code> typed columns, which is based on OpenGIS formats.
 Frankly, here on stackoverflow is a whole bunch of related information.

blocks|key|3114062|text|通过查看事件，它已经开始工作了。我花了很多时间制作:)|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3114063|这就是我为需要它的人做的事情：|3114064|function+mapsInitialize()
{+++
++++startPoint+=+new+google.maps.LatLng(lat,lon);
++++options+=+{+zoom:+16,+center:+startPoint,+mapTypeId:+google.maps.MapTypeId.HYBRID};
++++map+=+new+google.maps.Map(document.getElementById("map_canvas"),+options);


++++google.maps.event.addListener(map,+'click',+function(event)+{
++++++++if+(drawing+==+true){
++++++++++++placeMarker(event.latLng);
++++++++++++if+(bottomLeft+==+null)+{
++++++++++++++++bottomLeft+=+new+google.maps.LatLng(event.latLng.Oa,+event.latLng.Pa);
++++++++++++}
++++++++++++else+if+(topRight+==+null){
++++++++++++++++topRight+=+new+google.maps.LatLng(event.latLng.Oa,+event.latLng.Pa);
++++++++++++++++drawing+=+false;
++++++++++++++++rectangle+=+new+google.maps.Rectangle();

++++++++++++++++var+bounds+=+new+google.maps.LatLngBounds(bottomLeft,+topRight);+

++++++++++++++++var+rectOptions+=+{
++++++++++++++++++++strokeColor:+"#FF0000",
++++++++++++++++++++strokeOpacity:+0.8,
++++++++++++++++++++strokeWeight:+2,
++++++++++++++++++++fillColor:+"#FF0000",
++++++++++++++++++++fillOpacity:+0.35,
++++++++++++++++++++map:+map,
++++++++++++++++++++bounds:+bounds
++++++++++++++++};
++++++++++++++++rectangle.setOptions(rectOptions);
++++++++++++}
++++++++}
++++});
}

function+placeMarker(location)+{
++var+marker+=+new+google.maps.Marker({
++++++position:+location,+
++++++map:+map
++});
}|code-block|syntax|javascript|3114065|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

Already got it to work by looking into events. Took a lot of my time to make :)

This is how i've done it for people that need it to:

<pre><code>function mapsInitialize()
{ 
 startPoint = new google.maps.LatLng(lat,lon);
 options = { zoom: 16, center: startPoint, mapTypeId: google.maps.MapTypeId.HYBRID};
 map = new google.maps.Map(document.getElementById("map_canvas"), options);


 google.maps.event.addListener(map, 'click', function(event) {
 if (drawing == true){
 placeMarker(event.latLng);
 if (bottomLeft == null) {
 bottomLeft = new google.maps.LatLng(event.latLng.Oa, event.latLng.Pa);
 }
 else if (topRight == null){
 topRight = new google.maps.LatLng(event.latLng.Oa, event.latLng.Pa);
 drawing = false;
 rectangle = new google.maps.Rectangle();

 var bounds = new google.maps.LatLngBounds(bottomLeft, topRight); 

 var rectOptions = {
 strokeColor: "#FF0000",
 strokeOpacity: 0.8,
 strokeWeight: 2,
 fillColor: "#FF0000",
 fillOpacity: 0.35,
 map: map,
 bounds: bounds
 };
 rectangle.setOptions(rectOptions);
 }
 }
 });
}

function placeMarker(location) {
 var marker = new google.maps.Marker({
 position: location, 
 map: map
 });
}
</code></pre>

I'm trying to let people draw a rectangle on Google Maps and store the bottomLeft and topRight coordinates.

I know I can draw a Rectangle codewise (see: <a href="http://code.google.com/intl/nl-NL/apis/maps/documentation/javascript/reference.html#Rectangle" rel="nofollow">http://code.google.com/intl/nl-NL/apis/maps/documentation/javascript/reference.html#Rectangle</a>), but before i can load the bounds from my DB the people need to define it themself first off course :)

So my question is, how can I let people draw a rectangle on Google Maps (API v3) and store the coordinates of the bottomLeft and topRight corner?

Geofencing with Google Maps

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我正在尝试让人们在谷歌地图上画一个矩形，并存储bottomLeft和topRight坐标。我知道我可以按代码绘制一个矩形(参见：)，但是在我可以从我的DB加载边界之前，人们首先需要自己定义它:)所以我的问题是，如何让人们在Google Maps (API v3)上绘制一个矩形，并存储bottomLeft和topRigh...

问使用Google地图进行地理围栏
EN

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