Returns the great-circle angle (in radians) between two spherical coordinates, ignoring r. Equivalent to the central angle between the two directions on a unit sphere.
Uses the numerically stable haversine formula.
the first Spherical
the second Spherical
angle in radians in [0, π]
Returns the great-circle angle (in radians) between two spherical coordinates, ignoring r. Equivalent to the central angle between the two directions on a unit sphere.
Uses the numerically stable haversine formula.