colour.algebra.polar_to_cartesian#

colour.algebra.polar_to_cartesian(a: ArrayLike) → NDArrayFloat[source]#

Transform specified polar coordinates array \(\rho\phi\) (radial coordinate, angular coordinate) to Cartesian coordinates array \(xy\).

Parameters:: a (ArrayLike) – Polar coordinates array \(\rho\phi\) to transform where \(\rho\) is the radial coordinate in range [0, +inf] and \(\phi\) is the angular coordinate in range [-pi, pi] radians (i.e., [-180, 180] degrees).
Returns:: Cartesian coordinates array \(xy\).
Return type:: numpy.ndarray

References

Examples

>>> a = np.array([3.16227766, 0.32175055])
>>> polar_to_cartesian(a)
array([3.        , 0.9999999...])