On Nov 19, 12:01 am, robert <[email protected]> wrote: > Yes it is possible, I was as stuck as you probably were back in the v2 > days and tried a million and a have different ways of figuring this > out when I come across a solution, I wish I remembered where from so I > could attribute it to them.
That is from Mike Williams' v2 tutorial: http://econym.org.uk/gmap/ Third Party Extensions Part 12 Using EPoly - extra methods for polygons and polylines. http://econym.org.uk/gmap/epoly.htm There are several ports of it to v3. -- Larry > However I did port it to v3, it involves > extending the Polygon class to include a function called Contains, > which takes in the latlng object and returns back true or false. > > The function is as follows: > > google.maps.Polygon.prototype.Contains = function(point) { > > var j = 0; > var func_oddNodes = false; > var x = point.lng(); > var y = point.lat(); > var poly = this.getPath(); > > for (var i=0; i < poly.getLength(); i++) { > > j++; > > if( j == poly.getLength() ) { > j = 0; > } // end if > > if ( ((poly.getAt(i).lat() < y) && (poly.getAt(j).lat() >= > y)) > || ((poly.getAt(j).lat() < y) && (poly.getAt(i).lat() >= y)) > ) { > > if ( poly.getAt(i).lng() + (y - poly.getAt(i).lat()) > / (poly.getAt(j).lat()-poly.getAt(i).lat()) > * (poly.getAt(j).lng() - poly.getAt(i).lng())<x ) { > > func_oddNodes = !func_oddNodes > > } // end if > > } // end if > > } // end for > > return func_oddNodes; > > } // end function > > And to make the call to it: > > mypolygon.Contains(mypoint); > > I have it on a site that is up for now, (I'm working to replace it > soon) its @http://www.cadistrict38.org/new/2011/m.php, just click > submit on that first pane and then enter in any name and try location > "Lakewood, CA" and it should spit back "within Lakewood" > > Hope this helps! > > On Nov 18, 4:43 pm, Zachary DeBruine <[email protected]> > wrote: > > > > > > > > > Given a latitude-longitude point, is there an easy code that I can use to > > determine whether or not that point is within the bounds of the > > user-defined geometrical shape? > > > Thanks! > > -Zach -- You received this message because you are subscribed to the Google Groups "Google Maps JavaScript API v3" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/google-maps-js-api-v3?hl=en.
