When a polygon is clicked, the map receives the click too, with the
third parameter described in the documentation instead of the first:
http://code.google.com/apis/maps/documentation/reference.html#GMap2.click

I don't know the specific needs of the application you're planning,
but I see no reason why a click on Dallas should not be considered a
click on Texas.

That means that you should probably look at the lat-lon of the click
and then do some point-in-polygon analysis and determine ALL the
polygons that contain the point where the click took place.

--
Marcelo - http://maps.forum.nu
--



On Mar 13, 5:06 pm, sTeamTraen <[email protected]> wrote:
> The app which I'm planning will allow people to draw polygons of
> various sizes on the map.  For example, you could draw around the
> state of Texas and the city of Dallas.
>
> This gives problems if Texas loads on top of Dallas, because every
> click on Dallas will, I presume, be intercepted by the Texas overlay.
>
> My idea was to sort the polygons by size and load the largest ones
> first, in the hope that Dallas will be "on top of" Texas.  Is this
> necessary?  Is it sufficient?  Or do I need to investigate layers?
>
> Thanks
> Nick
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