Workshop 2 AnswersΒΆ

import matplotlib.pyplot as plt
import numpy as np

# Function definitions

def draw_triangle():
    for i in range(3):
        draw_forward(1)
        rotate_left(120)
    
def draw_square():
    for i in range(4):
        draw_forward(1)
        rotate_left(90)
    
def draw_pentagon():
    for i in range(5):
        draw_forward(1)
        rotate_left(72)
    
def draw_hexagon():
    for i in range(6):
        draw_forward(1)
        rotate_left(60)
        
def draw_heptagon():
    for i in range(7):
        draw_forward(1)
        rotate_left(360/7)
        
def start():
    state[0] = 0
    state[1] = 0
    state[2] = 0
    
    fig = plt.figure(figsize=(4,4))
    ax = fig.add_subplot(111)
    ax.set_aspect('equal', adjustable='box')
    return fig

def draw_forward(dis):
    x = state[0]
    y = state[1]
    angle = state[2]
    state[0] = x + np.cos(angle) * dis
    state[1] = y + np.sin(angle) * dis
    plt.plot([x, state[0]], [y, state[1]], color="black", linewidth=2)
    
def move_forward(dis):
    x = state[0]
    y = state[1]
    angle = state[2]
    state[0] = x + np.cos(angle) * dis
    state[1] = y + np.sin(angle) * dis
    
def rotate_left(theta):
    state[2] = state[2] + theta * np.pi / 180
    
state = [0, 0, 0]

# Example: draw a unit square
start()
draw_forward(1)
rotate_left(90)
draw_forward(1)
rotate_left(90)
draw_forward(1)
rotate_left(90)
draw_forward(1)
../_images/turtle_workshop_answers_3_0.png 
# Example: draw a hexagon
start()
draw_forward(1)
rotate_left(60)
draw_forward(1)
rotate_left(60)
draw_forward(1)
rotate_left(60)
draw_forward(1)
rotate_left(60)
draw_forward(1)
rotate_left(60)
draw_forward(1)
../_images/turtle_workshop_answers_4_0.png 
start()
for i in range(6):
    draw_forward(1)
    rotate_left(60)
../_images/turtle_workshop_answers_5_0.png 
f = start()
draw_triangle()
move_forward(2)
draw_square()
move_forward(2)
draw_pentagon()
move_forward(2)
draw_hexagon()
move_forward(2)
draw_heptagon()
../_images/turtle_workshop_answers_6_0.png 
f = start()
for i in range(5):
    draw_square()
    rotate_left(72)
../_images/turtle_workshop_answers_8_0.png 
n = 100
m = 10
theta = 360 / n
f = start()

for j in range (m):
    for i in range(n):
        draw_forward(2/n)
        rotate_left(theta)
    move_forward(1)
    rotate_left(360/m)
../_images/turtle_workshop_answers_10_0.png