It doesn't need to be 100% correct, it can be the center of the bounding rectangle.
Thank you in advance
+3
A:
Algorithm:
Run through all the points in the polygon. For all the points find;
x1, the lowestxcoordinatey1, the lowestycoordinatex2, the highestxcoordinatey2, the highestycoordinate
You now have the bounding rectangle, and can work out the center using:
center.x = x1 + ((x2 - x1) / 2);
center.y = y1 + ((y2 - y1) / 2);
Matthew Scharley
2010-06-20 21:53:21
Well, i've found that in v2, I was able to do it just by calling polygon.getBounds().getCenter(), but I guess i'll have to do it your way. Thanks
ANd
2010-06-20 22:41:48
I have no idea, that may work in v3 too. I havn't looked too closely at the Google Maps API. But this way does essentially that anyway.
Matthew Scharley
2010-06-20 23:24:24
It looks like Google forgot the `Polygon.getBounds()` method. It is available for `Circle` and `Rectangle`, but not for the `Polygon` class.
Daniel Vassallo
2010-06-21 05:29:33
+2
A:
Matthew's answer is a good solution. However, when using the Google Maps API v3, you might want to pass each point of the polygon to a LatLngBounds object through the extend() method, and then finally call the getCenter() method on the LatLngBounds object. Consider the following example:
var bounds = new google.maps.LatLngBounds();
var i;
// The Bermuda Triangle
var polygonCoords = [
new google.maps.LatLng(25.774252, -80.190262),
new google.maps.LatLng(18.466465, -66.118292),
new google.maps.LatLng(32.321384, -64.757370),
new google.maps.LatLng(25.774252, -80.190262)
];
for (i = 0; i < polygonCoords.length; i++) {
bounds.extend(polygonCoords[i]);
}
// The Center of the Bermuda Triangle - (25.3939245, -72.473816)
console.log(bounds.getCenter());
Daniel Vassallo
2010-06-21 05:37:38