Some Code Fragments

This is to record some Python macro that I have used to draw some TikZ figures:

import numpy as np

e = lambda x: np.exp(x * (0+1j) * np.pi/180)
f = lambda n: "({a:.4f},{b:.4f})".format(a=n.real,b=n.imag)

# 3d projections
## parameters
a = .8
th = 40 # check: https://www.desmos.com/calculator/4awmzytpad
## projection function
proj_3d = lambda x,y,z: -x*a*e(th) + y + (0+1j)*z

# e.g.: f(e(60)+e(150)) = "(-0.3660,1.3660)"
# e.g.: f(proj_3d(1,2,-3)) = "(1.3872,-3.5142)"

Update Log

• 211109: Created
• 220210: added 3D projection module