Given a cartesian (XYZ) position, this node outputs the U (latitude), V (longitude), and radial distance of the point relative to the origin.
This is equivalent to:
radius = sqrt(x*x + y*y + z*z); u = atan2(y, x) + M_PI; v = acos(z/radius);
How this node outputs the UV coordinates.
U and V coordinates are in the range
UV coordinates are in radians. U is in the range
(0, 2*pi) while V is in the range
UV coordinates are in degrees. U is in the range
while V is in the range