java code to do the trick
public double latitudeToX(int zoom, double utmZoom, double lati,
double lngi, double offset, double radius)
{
return (offset +radius *lati* Math.PI/180);// >> zoom;
}
public double longitudeToY(double zoom, double utmZoom, double lati,
double lngi, double offset, double radius)
{
return (offset-radius*Math.log((1+Math.sin(lngi*Math.PI/180))/
(1-
Math.sin(lngi*Math.PI/180)))/2);//>>zoom;
}
sample test with Polygon class of java
double offset=16777216;
double radius=offset / Math.PI;
int x = (int)this.latitudeToX(0, 0, 25.774252,
-80.190262, offset,
radius);
int y = (int)this.longitudeToY(0, 0, 25.774252,
-80.190262, offset,
radius);
Polygon polygon = new Polygon();
polygon.addPoint(x, y);
x = (int)this.latitudeToX(0, 0, 18.466465, -66.118292,
offset,
radius);
y = (int)this.longitudeToY(0, 0, 18.466465, -66.118292,
offset,
radius);
polygon.addPoint(x, y);
x = (int)this.latitudeToX(0, 0, 32.321384, -64.75737,
offset,
radius);
y = (int)this.longitudeToY(0, 0, 32.321384, -64.75737,
offset,
radius);
polygon.addPoint(x, y);
//yes
/*lat = 24.8864364;//90787712;
lng = -70.2685546;//875;
*/
//yes
/*lat = 26.703743;//90787712;
lng = -74.091797;//875;
*/
//no
lat = 19.598435;//90787712;
lng = -79.892578;//875;
x = (int)this.latitudeToX(0, 0, lat, lng, offset,
radius);
y = (int)this.longitudeToY(0, 0, lat, lng, offset,
radius);
if (polygon.contains(x, y))
return true;
use this link to verify your points http://itouchmap.com/latlong.html
it works for me, hopefully works for you as well.
--
You received this message because you are subscribed to the Google Groups
"Google Maps API V2" 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-api?hl=en.
