Function dot

Interaction/Style/Testing/Python/TestStyleUser.py:34–35

(u, v)

def magnitude(v):
    return math.sqrt(sum(v[i]*v[i] for i in range(0,3)))
def dot(u, v):
    return sum(u[i]*v[i] for i in range(0,3))
def normalize(v):
    vmag = magnitude(v)
    return [ v[i]/vmag  for i in range(0,3) ]