array of x-coordinates; this must be a single-precision or double-precision floating-point array.
array of y-coordinates, that must have the same size and same type as x.
output array of magnitudes of the same size and type as x.
output array of angles that has the same size and type as x; the angles are measured in radians (from 0 to 2*Pi) or in degrees (0 to 360 degrees).
OptionalangleInDegrees: boolean
a flag, indicating whether the angles are measured in radians (which is by default), or in degrees. TODO Check binding magnitude, angle was missing
Calculates the magnitude and angle of 2D vectors.
https://docs.opencv.org/4.x/d2/de8/group__core__array.html#gac5f92f48ec32cacf5275969c33ee837d