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from turtle import *

ech = 3.5

def draw_line(p1, p2):
    penup()
    goto(p1)
    pendown()
    goto(p2)

def interpolate(p1, p2, t):
    return (-108 + ech * (p1[0] + t * (p2[0] - p1[0])), -112 + ech * (p1[1] + t * (p2[1] - p1[1])))

def bande(u1, u2, u3, u4, k):
    for i in range(k + 1):
        t = i / k
        p1 = interpolate(u1, u2, t)
        p2 = interpolate(u3, u4, t)
        draw_line(p1, p2)    

def draw_mesh(q):
    global p
    (x1, y1), (x2, y2), (x3, y3), (x4, y4) = [p[v] for v in q[0]]
    (m, n) = q[1]
    bande((x1, y1), (x2, y2), (x4, y4), (x3, y3), m)
    bande((x1, y1), (x4, y4), (x2, y2), (x3, y3), n)

a, b = 40, 12
p = (18,50), (50,44), (44, 12), (12, 18), (-16, 0), (76, 0), (76, 64), (-16, 64)

q1 = (4, 3, 0, 7), (a, b)
q2 = (4, 5, 2, 3), (b, a)
q3 = (5, 6, 1, 2), (b, a)
q4 = (6, 1, 0, 7), (a, b)
q5 = (0, 1, 2, 3), (b, b)
speed(0)
for q in q1,q2,q3,q4,q5: draw_mesh(q)
hideturtle()