def test_displace_PSF_moffat(self):
FWHM = 1
beta = 2.6
np.random.seed(41)
x, y = 0, 0
x_d, y_d = velocity_util.displace_PSF_moffat(x, y, FWHM, beta)
assert x_d != x
assert y_d != y
def displace_psf(self, x, y):
"""
:param x: x-coordinate of light ray
:param y: y-coordinate of light ray
:return: x', y' displaced by the two dimensional PSF distribution function
"""
return util.displace_PSF_moffat(x, y, self._fwhm, self._moffat_beta)