Definition at line 68 of file general_optics.py.
00068 : 00069 rho=math.sqrt(x*x+y*y) 00070 if rho < 1e-10: 00071 return 1., 0. 00072 else: 00073 return x/rho, y/rho 00074 def eulermat(theta, eta, phi):