public static S1Angle latitude(S2Point p) {
// We use atan2 rather than asin because the input vector is not necessarily
// unit length, and atan2 is much more accurate than asin near the poles.
return S1Angle.radians(
Math.atan2(p.get(2), Math.sqrt(p.get(0) * p.get(0) + p.get(1) * p.get(1))));
}
public static S1Angle longitude(S2Point p) {
// Note that atan2(0, 0) is defined to be zero.
return S1Angle.radians(Math.atan2(p.get(1), p.get(0)));
}
/** Return the normalized direction vector corresponding to the center of the given cell. */
public S2Point toPoint() {
return S2Point.normalize(toPointRaw());
}
