Function normalize

normalize(
out: spherical.Spherical,
a: readonly [number, number, number],
): spherical.Spherical
Sets r=1, preserving the angles. If r is zero it stays zero.
Parameters
- out: spherical.Spherical
  the receiving Spherical
- a: readonly [number, number, number]
  the source Spherical
Returns spherical.Spherical
out
- Defined in core/spherical.ts:84