unproject method
Given a projected coordinate returns the corresponding GeoPosition.
The inverse of project
.
Implementation
@override
LatLng unproject(UPoint point) {
double d = 180 / PI;
return LatLng(
wrapLat((2 * math.atan(math.exp(point.y / R)) - (PI / 2)) * d),
wrapLng(point.x * d / R),
);
}