koch_line function

[Yentumi-K]

Hello @IlievskiV
`
# third point: rotation for multiple of 60 degrees
c = (b[0] + l/3. * np.cos(factor * np.pi/3.), b[1] + l/3. * np.sin(factor * np.pi/3.))

# fourth point: two thirds in each direction from the first point
d = (x1 + 2. * (x2 - x1)/3., y1 + 2. * (y2 - y1)/3.)

# the last point
e = end

return {'a': a, 'b': b, 'c': c, 'd' : d, 'e' : e, 'factor' : factor}

`

Where is the factor variable from?