goldenRatioRectangle.py
#
# Draws the golden ratio rectangle
# Vincent Legat - 2018
# Ecole Polytechnique de Louvain
#
from numpy import *
import matplotlib
from matplotlib import pyplot as plt
matplotlib.rcParams['toolbar'] = 'None'
plt.rcParams['figure.facecolor'] = 'moccasin'
# =========================================================================
def goldRect():
""" plots the golden rectangle """
phi = (1 + sqrt(5.0)) / 2
x = [0,phi,phi,0,0]
y = [0,0,1,1,0]
u = [1,1]
v = [0,1]
plt.axis('equal')
plt.axis('off')
plt.text(phi/2,1.1,'$\phi$')
plt.text((1+phi)/2,-0.1,'$\phi - 1$')
plt.text(-0.1, 0.5,'1')
plt.text( 0.5,-0.1,'1')
plt.plot(x,y,'-b')
plt.plot(u,v,'--b')
plt.show()
# ============================= mainProgram ===============================
goldRect()
help(goldRect)
# =========================================================================