本文介绍了如何从gmaps RECTANGLE(Overlay)获取4个顶点坐标?的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何从gmaps RECTANGLE(Overlay)获得4个顶点坐标?
我只能从 //maps.googleapis.com/maps/api/js\"></script><div id =map_canvas>< / div>
How do you get 4 vertex coordinates from gmaps RECTANGLE (Overlay)?
I can get only NE and SW lat long from selectedShape.getBounds()
I need a 4 vertex rectangle to post-process check in MySQL php functions.
解决方案
NorthWest = NorthEast Lat , SouthWest Lng
SouthEast = SouthWest Lat , NorthEast Lng
var bounds = rectangle.getBounds();
var NE = bounds.getNorthEast();
var SW = bounds.getSouthWest();
// North West
var NW = new google.maps.LatLng(NE.lat(),SW.lng());
// South East
var SE = new google.maps.LatLng(SW.lat(),NE.lng());
example fiddle
code snippet:
var geocoder;
var map;
function initialize() {
var map = new google.maps.Map(
document.getElementById("map_canvas"), {
center: new google.maps.LatLng(37.4419, -122.1419),
zoom: 13,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
google.maps.event.addListenerOnce(map, 'bounds_changed', function() {
var rectangle = new google.maps.Rectangle({
bounds: map.getBounds()
})
var bounds = rectangle.getBounds();
var NE = bounds.getNorthEast();
var NEmark = new google.maps.Marker({
map: map,
position: NE,
title: "NE"
});
var SW = bounds.getSouthWest();
var SWmark = new google.maps.Marker({
map: map,
position: SW,
title: "SW"
});
// North West
var NW = new google.maps.LatLng(NE.lat(), SW.lng());
var NWmark = new google.maps.Marker({
map: map,
position: NW,
title: "NW"
});
// South East
var SE = new google.maps.LatLng(SW.lat(), NE.lng());
var SEmark = new google.maps.Marker({
map: map,
position: SE,
title: "SE"
});
var polygon = new google.maps.Polygon({
map: map,
paths: [
[NE, NW, SW, SE]
]
});
map.setZoom(map.getZoom() - 1);
});
}
google.maps.event.addDomListener(window, "load", initialize);
html,
body,
#map_canvas {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map_canvas"></div>
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