Function v_dot_u

pyrender.py:19–20

(v, u)

    length = sqrt(vector[0]**2 + vector[1]**2 + vector[2]**2)
    return [vector[0] / length, vector[1] / length, vector[2] / length,]
def v_dot_u(v, u):
    return v[0]*u[0] + v[1]*u[1] + v[2]*u[2]
def len_v(v):
    return sqrt(v[0] * v[0] + v[1] * v[1] + v[2] * v[2])