compute_gamma.py

from numba import njit

@njit(nogil=True)
def compute_gamma(vz, norm_V):
    """
    Compute gamma (the angle between ground and the speed vector) using trigonometry.
    sin(gamma) = V_z / V -> gamma = arcsin(V_z/V)
    """
    if norm_V > 0:
        return asin(vz / norm_V)
    if norm_V == 0:
        return 0