Hi everybody,

I tried the python example code ‘pga3d.py’ from the /tools section and got a problem at the first step. It seems like the product does not work as expected in the line

ROT = rotor(math.pi/2.0,E1*E2)

returning

ZeroDivisionError Traceback (most recent call last)

~/Downloads/pga3d.py in

415

416 # Elements of the even subalgebra (scalar + bivector + pss) of unit length are motors

–> 417 ROT = rotor(math.pi/2.0,E1*E2)

418

419 # The outer product ^ is the MEET. Here we intersect the yz (x=0) and xz (y=0) planes.~/Downloads/pga3d.py in rotor(angle, line)

374 # A rotor (Euclidean line) and translator (Ideal line)

375 def rotor(angle,line):

–> 376 return math.cos(angle/2.0) + math.sin(angle/2.0)*line.normalized()

377

378 def translator(dist,line):~/Downloads/pga3d.py in normalized(a)

370

371 def normalized(a):

–> 372 return a*(1/a.norm())

373

374 # A rotor (Euclidean line) and translator (Ideal line)ZeroDivisionError: float division by zero

Whenever I multiply a basis element by itself it returns 0.

Is there a problem with my python setup?