analysis: analysis::general_optics::composite_optic::rotate_to

def rotate_to_axis	(	self,
		from_obj
	)

Definition at line 1344 of file general_optics.py.

01344                                           :
01345                 "rotate this object by an angle that makes it look at from_obj, assuming it started out looking along the z axis"
01346                 if isinstance(from_obj, general_optic):
01347                         fc=from_obj.exit_center()
01348                         fn=from_obj.name
01349                 else:
01350                         fc=Numeric.array(from_obj) #assume is is a tuple or array
01351                         fn=Numeric.array_str(fc, precision=3, suppress_small=1)
01352                 
01353                 dx1=self.center-fc
01354                 x,y,z=tuple(dx1)
01355                 rho=math.sqrt(x*x+y*y)
01356                 theta=math.atan2(rho,z)/deg
01357                 eta=math.atan2(y,x)/deg
01358                 if abs(eta)>90: #prefer signed theta and unsigned eta
01359                         eta=180-eta
01360                         theta=-theta
01361                 self.update_coordinates(self.center, self.center, euler(theta, eta, 0).mat)     
01362                 return self #make daisy-chaining easy
01363 
        def __getitem__(self, tag):